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Comparing libev/ev.c (file contents):
Revision 1.384 by root, Wed Jul 20 00:58:45 2011 UTC vs.
Revision 1.510 by root, Wed Aug 28 09:45:49 2019 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007-2019 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
… …
43# include EV_CONFIG_H 43# include EV_CONFIG_H
44# else 44# else
45# include "config.h" 45# include "config.h"
46# endif 46# endif
47 47
48#if HAVE_FLOOR 48# if HAVE_FLOOR
49# ifndef EV_USE_FLOOR 49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1 50# define EV_USE_FLOOR 1
51# endif
51# endif 52# endif
52#endif
53 53
54# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
55# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
56# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
57# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
… …
59# endif 59# endif
60# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
62# endif 62# endif
63# endif 63# endif
64# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
65# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
66# endif 66# endif
67 67
68# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
69# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
113# define EV_USE_EPOLL EV_FEATURE_BACKENDS 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
114# endif 114# endif
115# else 115# else
116# undef EV_USE_EPOLL 116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0 117# define EV_USE_EPOLL 0
118# endif
119
120# if HAVE_LINUX_AIO_ABI_H
121# ifndef EV_USE_LINUXAIO
122# define EV_USE_LINUXAIO EV_FEATURE_BACKENDS
123# endif
124# else
125# undef EV_USE_LINUXAIO
126# define EV_USE_LINUXAIO 0
118# endif 127# endif
119 128
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H 129# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
121# ifndef EV_USE_KQUEUE 130# ifndef EV_USE_KQUEUE
122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS 131# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
… …
162# define EV_USE_EVENTFD 0 171# define EV_USE_EVENTFD 0
163# endif 172# endif
164 173
165#endif 174#endif
166 175
176/* OS X, in its infinite idiocy, actually HARDCODES
177 * a limit of 1024 into their select. Where people have brains,
178 * OS X engineers apparently have a vacuum. Or maybe they were
179 * ordered to have a vacuum, or they do anything for money.
180 * This might help. Or not.
181 * Note that this must be defined early, as other include files
182 * will rely on this define as well.
183 */
184#define _DARWIN_UNLIMITED_SELECT 1
185
167#include <stdlib.h> 186#include <stdlib.h>
168#include <string.h> 187#include <string.h>
169#include <fcntl.h> 188#include <fcntl.h>
170#include <stddef.h> 189#include <stddef.h>
171 190
… …
183# include EV_H 202# include EV_H
184#else 203#else
185# include "ev.h" 204# include "ev.h"
186#endif 205#endif
187 206
188EV_CPP(extern "C" {) 207#if EV_NO_THREADS
208# undef EV_NO_SMP
209# define EV_NO_SMP 1
210# undef ECB_NO_THREADS
211# define ECB_NO_THREADS 1
212#endif
213#if EV_NO_SMP
214# undef EV_NO_SMP
215# define ECB_NO_SMP 1
216#endif
189 217
190#ifndef _WIN32 218#ifndef _WIN32
191# include <sys/time.h> 219# include <sys/time.h>
192# include <sys/wait.h> 220# include <sys/wait.h>
193# include <unistd.h> 221# include <unistd.h>
194#else 222#else
195# include <io.h> 223# include <io.h>
196# define WIN32_LEAN_AND_MEAN 224# define WIN32_LEAN_AND_MEAN
225# include <winsock2.h>
197# include <windows.h> 226# include <windows.h>
198# ifndef EV_SELECT_IS_WINSOCKET 227# ifndef EV_SELECT_IS_WINSOCKET
199# define EV_SELECT_IS_WINSOCKET 1 228# define EV_SELECT_IS_WINSOCKET 1
200# endif 229# endif
201# undef EV_AVOID_STDIO 230# undef EV_AVOID_STDIO
202#endif 231#endif
203 232
204/* OS X, in its infinite idiocy, actually HARDCODES
205 * a limit of 1024 into their select. Where people have brains,
206 * OS X engineers apparently have a vacuum. Or maybe they were
207 * ordered to have a vacuum, or they do anything for money.
208 * This might help. Or not.
209 */
210#define _DARWIN_UNLIMITED_SELECT 1
211
212/* this block tries to deduce configuration from header-defined symbols and defaults */ 233/* this block tries to deduce configuration from header-defined symbols and defaults */
213 234
214/* try to deduce the maximum number of signals on this platform */ 235/* try to deduce the maximum number of signals on this platform */
215#if defined (EV_NSIG) 236#if defined EV_NSIG
216/* use what's provided */ 237/* use what's provided */
217#elif defined (NSIG) 238#elif defined NSIG
218# define EV_NSIG (NSIG) 239# define EV_NSIG (NSIG)
219#elif defined(_NSIG) 240#elif defined _NSIG
220# define EV_NSIG (_NSIG) 241# define EV_NSIG (_NSIG)
221#elif defined (SIGMAX) 242#elif defined SIGMAX
222# define EV_NSIG (SIGMAX+1) 243# define EV_NSIG (SIGMAX+1)
223#elif defined (SIG_MAX) 244#elif defined SIG_MAX
224# define EV_NSIG (SIG_MAX+1) 245# define EV_NSIG (SIG_MAX+1)
225#elif defined (_SIG_MAX) 246#elif defined _SIG_MAX
226# define EV_NSIG (_SIG_MAX+1) 247# define EV_NSIG (_SIG_MAX+1)
227#elif defined (MAXSIG) 248#elif defined MAXSIG
228# define EV_NSIG (MAXSIG+1) 249# define EV_NSIG (MAXSIG+1)
229#elif defined (MAX_SIG) 250#elif defined MAX_SIG
230# define EV_NSIG (MAX_SIG+1) 251# define EV_NSIG (MAX_SIG+1)
231#elif defined (SIGARRAYSIZE) 252#elif defined SIGARRAYSIZE
232# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 253# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
233#elif defined (_sys_nsig) 254#elif defined _sys_nsig
234# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 255# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
235#else 256#else
236# error "unable to find value for NSIG, please report" 257# define EV_NSIG (8 * sizeof (sigset_t) + 1)
237/* to make it compile regardless, just remove the above line, */
238/* but consider reporting it, too! :) */
239# define EV_NSIG 65
240#endif 258#endif
241 259
242#ifndef EV_USE_FLOOR 260#ifndef EV_USE_FLOOR
243# define EV_USE_FLOOR 0 261# define EV_USE_FLOOR 0
244#endif 262#endif
245 263
246#ifndef EV_USE_CLOCK_SYSCALL 264#ifndef EV_USE_CLOCK_SYSCALL
247# if __linux && __GLIBC__ >= 2 265# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
248# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 266# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
249# else 267# else
250# define EV_USE_CLOCK_SYSCALL 0 268# define EV_USE_CLOCK_SYSCALL 0
251# endif 269# endif
252#endif 270#endif
253 271
272#if !(_POSIX_TIMERS > 0)
273# ifndef EV_USE_MONOTONIC
274# define EV_USE_MONOTONIC 0
275# endif
276# ifndef EV_USE_REALTIME
277# define EV_USE_REALTIME 0
278# endif
279#endif
280
254#ifndef EV_USE_MONOTONIC 281#ifndef EV_USE_MONOTONIC
255# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 282# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
256# define EV_USE_MONOTONIC EV_FEATURE_OS 283# define EV_USE_MONOTONIC EV_FEATURE_OS
257# else 284# else
258# define EV_USE_MONOTONIC 0 285# define EV_USE_MONOTONIC 0
259# endif 286# endif
260#endif 287#endif
… …
297 324
298#ifndef EV_USE_PORT 325#ifndef EV_USE_PORT
299# define EV_USE_PORT 0 326# define EV_USE_PORT 0
300#endif 327#endif
301 328
329#ifndef EV_USE_LINUXAIO
330# if __linux /* libev currently assumes linux/aio_abi.h is always available on linux */
331# define EV_USE_LINUXAIO 1
332# else
333# define EV_USE_LINUXAIO 0
334# endif
335#endif
336
337#ifndef EV_USE_IOURING
338# if __linux
339# define EV_USE_IOURING 0
340# else
341# define EV_USE_IOURING 0
342# endif
343#endif
344
302#ifndef EV_USE_INOTIFY 345#ifndef EV_USE_INOTIFY
303# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 346# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
304# define EV_USE_INOTIFY EV_FEATURE_OS 347# define EV_USE_INOTIFY EV_FEATURE_OS
305# else 348# else
306# define EV_USE_INOTIFY 0 349# define EV_USE_INOTIFY 0
… …
347 390
348#ifndef EV_HEAP_CACHE_AT 391#ifndef EV_HEAP_CACHE_AT
349# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 392# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
350#endif 393#endif
351 394
395#ifdef __ANDROID__
396/* supposedly, android doesn't typedef fd_mask */
397# undef EV_USE_SELECT
398# define EV_USE_SELECT 0
399/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
400# undef EV_USE_CLOCK_SYSCALL
401# define EV_USE_CLOCK_SYSCALL 0
402#endif
403
404/* aix's poll.h seems to cause lots of trouble */
405#ifdef _AIX
406/* AIX has a completely broken poll.h header */
407# undef EV_USE_POLL
408# define EV_USE_POLL 0
409#endif
410
352/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 411/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
353/* which makes programs even slower. might work on other unices, too. */ 412/* which makes programs even slower. might work on other unices, too. */
354#if EV_USE_CLOCK_SYSCALL 413#if EV_USE_CLOCK_SYSCALL
355# include <syscall.h> 414# include <sys/syscall.h>
356# ifdef SYS_clock_gettime 415# ifdef SYS_clock_gettime
357# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 416# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
358# undef EV_USE_MONOTONIC 417# undef EV_USE_MONOTONIC
359# define EV_USE_MONOTONIC 1 418# define EV_USE_MONOTONIC 1
419# define EV_NEED_SYSCALL 1
360# else 420# else
361# undef EV_USE_CLOCK_SYSCALL 421# undef EV_USE_CLOCK_SYSCALL
362# define EV_USE_CLOCK_SYSCALL 0 422# define EV_USE_CLOCK_SYSCALL 0
363# endif 423# endif
364#endif 424#endif
365 425
366/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 426/* this block fixes any misconfiguration where we know we run into trouble otherwise */
367 427
368#ifdef _AIX
369/* AIX has a completely broken poll.h header */
370# undef EV_USE_POLL
371# define EV_USE_POLL 0
372#endif
373
374#ifndef CLOCK_MONOTONIC 428#ifndef CLOCK_MONOTONIC
375# undef EV_USE_MONOTONIC 429# undef EV_USE_MONOTONIC
376# define EV_USE_MONOTONIC 0 430# define EV_USE_MONOTONIC 0
377#endif 431#endif
378 432
… …
386# define EV_USE_INOTIFY 0 440# define EV_USE_INOTIFY 0
387#endif 441#endif
388 442
389#if !EV_USE_NANOSLEEP 443#if !EV_USE_NANOSLEEP
390/* hp-ux has it in sys/time.h, which we unconditionally include above */ 444/* hp-ux has it in sys/time.h, which we unconditionally include above */
391# if !defined(_WIN32) && !defined(__hpux) 445# if !defined _WIN32 && !defined __hpux
392# include <sys/select.h> 446# include <sys/select.h>
447# endif
448#endif
449
450#if EV_USE_LINUXAIO
451# include <sys/syscall.h>
452# if SYS_io_getevents && EV_USE_EPOLL /* linuxaio backend requires epoll backend */
453# define EV_NEED_SYSCALL 1
454# else
455# undef EV_USE_LINUXAIO
456# define EV_USE_LINUXAIO 0
457# endif
458#endif
459
460#if EV_USE_IOURING
461# include <sys/syscall.h>
462# if !SYS_io_uring_setup && __linux && !__alpha
463# define SYS_io_uring_setup 425
464# define SYS_io_uring_enter 426
465# define SYS_io_uring_wregister 427
466# endif
467# if SYS_io_uring_setup && EV_USE_EPOLL /* iouring backend requires epoll backend */
468# define EV_NEED_SYSCALL 1
469# else
470# undef EV_USE_IOURING
471# define EV_USE_IOURING 0
393# endif 472# endif
394#endif 473#endif
395 474
396#if EV_USE_INOTIFY 475#if EV_USE_INOTIFY
397# include <sys/statfs.h> 476# include <sys/statfs.h>
… …
399/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 478/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
400# ifndef IN_DONT_FOLLOW 479# ifndef IN_DONT_FOLLOW
401# undef EV_USE_INOTIFY 480# undef EV_USE_INOTIFY
402# define EV_USE_INOTIFY 0 481# define EV_USE_INOTIFY 0
403# endif 482# endif
404#endif
405
406#if EV_SELECT_IS_WINSOCKET
407# include <winsock.h>
408#endif 483#endif
409 484
410#if EV_USE_EVENTFD 485#if EV_USE_EVENTFD
411/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 486/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
412# include <stdint.h> 487# include <stdint.h>
… …
443 uint32_t ssi_signo; 518 uint32_t ssi_signo;
444 char pad[128 - sizeof (uint32_t)]; 519 char pad[128 - sizeof (uint32_t)];
445}; 520};
446#endif 521#endif
447 522
448/**/ 523/*****************************************************************************/
449 524
450#if EV_VERIFY >= 3 525#if EV_VERIFY >= 3
451# define EV_FREQUENT_CHECK ev_verify (EV_A) 526# define EV_FREQUENT_CHECK ev_verify (EV_A)
452#else 527#else
453# define EV_FREQUENT_CHECK do { } while (0) 528# define EV_FREQUENT_CHECK do { } while (0)
… …
458 * This value is good at least till the year 4000. 533 * This value is good at least till the year 4000.
459 */ 534 */
460#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */ 535#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
461/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */ 536/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
462 537
463#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 538#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
464#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 539#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
465 540
541/* find a portable timestamp that is "always" in the future but fits into time_t.
542 * this is quite hard, and we are mostly guessing - we handle 32 bit signed/unsigned time_t,
543 * and sizes larger than 32 bit, and maybe the unlikely floating point time_t */
544#define EV_TSTAMP_HUGE \
545 (sizeof (time_t) >= 8 ? 10000000000000. \
546 : 0 < (time_t)4294967295 ? 4294967295. \
547 : 2147483647.) \
548
549#ifndef EV_TS_CONST
550# define EV_TS_CONST(nv) nv
551# define EV_TS_TO_MSEC(a) a * 1e3 + 0.9999
552# define EV_TS_FROM_USEC(us) us * 1e-6
466#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) 553# define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
467#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0) 554# define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
555# define EV_TV_GET(tv) ((tv).tv_sec + (tv).tv_usec * 1e-6)
556# define EV_TS_GET(ts) ((ts).tv_sec + (ts).tv_nsec * 1e-9)
557#endif
468 558
469/* the following are taken from libecb */ 559/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
470/* ecb.h start */ 560/* ECB.H BEGIN */
561/*
562 * libecb - http://software.schmorp.de/pkg/libecb
563 *
564 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
565 * Copyright (©) 2011 Emanuele Giaquinta
566 * All rights reserved.
567 *
568 * Redistribution and use in source and binary forms, with or without modifica-
569 * tion, are permitted provided that the following conditions are met:
570 *
571 * 1. Redistributions of source code must retain the above copyright notice,
572 * this list of conditions and the following disclaimer.
573 *
574 * 2. Redistributions in binary form must reproduce the above copyright
575 * notice, this list of conditions and the following disclaimer in the
576 * documentation and/or other materials provided with the distribution.
577 *
578 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
579 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
580 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
581 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
582 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
583 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
584 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
585 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
586 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
587 * OF THE POSSIBILITY OF SUCH DAMAGE.
588 *
589 * Alternatively, the contents of this file may be used under the terms of
590 * the GNU General Public License ("GPL") version 2 or any later version,
591 * in which case the provisions of the GPL are applicable instead of
592 * the above. If you wish to allow the use of your version of this file
593 * only under the terms of the GPL and not to allow others to use your
594 * version of this file under the BSD license, indicate your decision
595 * by deleting the provisions above and replace them with the notice
596 * and other provisions required by the GPL. If you do not delete the
597 * provisions above, a recipient may use your version of this file under
598 * either the BSD or the GPL.
599 */
600
601#ifndef ECB_H
602#define ECB_H
603
604/* 16 bits major, 16 bits minor */
605#define ECB_VERSION 0x00010006
606
607#ifdef _WIN32
608 typedef signed char int8_t;
609 typedef unsigned char uint8_t;
610 typedef signed short int16_t;
611 typedef unsigned short uint16_t;
612 typedef signed int int32_t;
613 typedef unsigned int uint32_t;
614 #if __GNUC__
615 typedef signed long long int64_t;
616 typedef unsigned long long uint64_t;
617 #else /* _MSC_VER || __BORLANDC__ */
618 typedef signed __int64 int64_t;
619 typedef unsigned __int64 uint64_t;
620 #endif
621 #ifdef _WIN64
622 #define ECB_PTRSIZE 8
623 typedef uint64_t uintptr_t;
624 typedef int64_t intptr_t;
625 #else
626 #define ECB_PTRSIZE 4
627 typedef uint32_t uintptr_t;
628 typedef int32_t intptr_t;
629 #endif
630#else
631 #include <inttypes.h>
632 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
633 #define ECB_PTRSIZE 8
634 #else
635 #define ECB_PTRSIZE 4
636 #endif
637#endif
638
639#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
640#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
641
642/* work around x32 idiocy by defining proper macros */
643#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
644 #if _ILP32
645 #define ECB_AMD64_X32 1
646 #else
647 #define ECB_AMD64 1
648 #endif
649#endif
471 650
472/* many compilers define _GNUC_ to some versions but then only implement 651/* many compilers define _GNUC_ to some versions but then only implement
473 * what their idiot authors think are the "more important" extensions, 652 * what their idiot authors think are the "more important" extensions,
474 * causing enourmous grief in return for some better fake benchmark numbers. 653 * causing enormous grief in return for some better fake benchmark numbers.
475 * or so. 654 * or so.
476 * we try to detect these and simply assume they are not gcc - if they have 655 * we try to detect these and simply assume they are not gcc - if they have
477 * an issue with that they should have done it right in the first place. 656 * an issue with that they should have done it right in the first place.
478 */ 657 */
479#ifndef ECB_GCC_VERSION
480 #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__) 658#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
481 #define ECB_GCC_VERSION(major,minor) 0 659 #define ECB_GCC_VERSION(major,minor) 0
482 #else 660#else
483 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) 661 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
662#endif
663
664#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
665
666#if __clang__ && defined __has_builtin
667 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
668#else
669 #define ECB_CLANG_BUILTIN(x) 0
670#endif
671
672#if __clang__ && defined __has_extension
673 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
674#else
675 #define ECB_CLANG_EXTENSION(x) 0
676#endif
677
678#define ECB_CPP (__cplusplus+0)
679#define ECB_CPP11 (__cplusplus >= 201103L)
680#define ECB_CPP14 (__cplusplus >= 201402L)
681#define ECB_CPP17 (__cplusplus >= 201703L)
682
683#if ECB_CPP
684 #define ECB_C 0
685 #define ECB_STDC_VERSION 0
686#else
687 #define ECB_C 1
688 #define ECB_STDC_VERSION __STDC_VERSION__
689#endif
690
691#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
692#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
693#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
694
695#if ECB_CPP
696 #define ECB_EXTERN_C extern "C"
697 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
698 #define ECB_EXTERN_C_END }
699#else
700 #define ECB_EXTERN_C extern
701 #define ECB_EXTERN_C_BEG
702 #define ECB_EXTERN_C_END
703#endif
704
705/*****************************************************************************/
706
707/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
708/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
709
710#if ECB_NO_THREADS
711 #define ECB_NO_SMP 1
712#endif
713
714#if ECB_NO_SMP
715 #define ECB_MEMORY_FENCE do { } while (0)
716#endif
717
718/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
719#if __xlC__ && ECB_CPP
720 #include <builtins.h>
721#endif
722
723#if 1400 <= _MSC_VER
724 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
725#endif
726
727#ifndef ECB_MEMORY_FENCE
728 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
729 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
730 #if __i386 || __i386__
731 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
732 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
733 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
734 #elif ECB_GCC_AMD64
735 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
736 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
737 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
738 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
739 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
740 #elif defined __ARM_ARCH_2__ \
741 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
742 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
743 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
744 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
745 || defined __ARM_ARCH_5TEJ__
746 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
747 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
748 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
749 || defined __ARM_ARCH_6T2__
750 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
751 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
752 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
753 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
754 #elif __aarch64__
755 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
756 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
757 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
758 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
759 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
760 #elif defined __s390__ || defined __s390x__
761 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
762 #elif defined __mips__
763 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
764 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
765 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
766 #elif defined __alpha__
767 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
768 #elif defined __hppa__
769 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
770 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
771 #elif defined __ia64__
772 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
773 #elif defined __m68k__
774 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
775 #elif defined __m88k__
776 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
777 #elif defined __sh__
778 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
779 #endif
484 #endif 780 #endif
485#endif 781#endif
486 782
487#if __cplusplus 783#ifndef ECB_MEMORY_FENCE
784 #if ECB_GCC_VERSION(4,7)
785 /* see comment below (stdatomic.h) about the C11 memory model. */
786 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
787 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
788 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
789 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
790
791 #elif ECB_CLANG_EXTENSION(c_atomic)
792 /* see comment below (stdatomic.h) about the C11 memory model. */
793 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
794 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
795 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
796 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
797
798 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
799 #define ECB_MEMORY_FENCE __sync_synchronize ()
800 #elif _MSC_VER >= 1500 /* VC++ 2008 */
801 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
802 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
803 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
804 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
805 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
806 #elif _MSC_VER >= 1400 /* VC++ 2005 */
807 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
808 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
809 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
810 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
811 #elif defined _WIN32
812 #include <WinNT.h>
813 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
814 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
815 #include <mbarrier.h>
816 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
817 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
818 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
819 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
820 #elif __xlC__
821 #define ECB_MEMORY_FENCE __sync ()
822 #endif
823#endif
824
825#ifndef ECB_MEMORY_FENCE
826 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
827 /* we assume that these memory fences work on all variables/all memory accesses, */
828 /* not just C11 atomics and atomic accesses */
829 #include <stdatomic.h>
830 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
831 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
832 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
833 #endif
834#endif
835
836#ifndef ECB_MEMORY_FENCE
837 #if !ECB_AVOID_PTHREADS
838 /*
839 * if you get undefined symbol references to pthread_mutex_lock,
840 * or failure to find pthread.h, then you should implement
841 * the ECB_MEMORY_FENCE operations for your cpu/compiler
842 * OR provide pthread.h and link against the posix thread library
843 * of your system.
844 */
845 #include <pthread.h>
846 #define ECB_NEEDS_PTHREADS 1
847 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
848
849 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
850 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
851 #endif
852#endif
853
854#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
855 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
856#endif
857
858#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
859 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
860#endif
861
862#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
863 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
864#endif
865
866/*****************************************************************************/
867
868#if ECB_CPP
488 #define ecb_inline static inline 869 #define ecb_inline static inline
489#elif ECB_GCC_VERSION(2,5) 870#elif ECB_GCC_VERSION(2,5)
490 #define ecb_inline static __inline__ 871 #define ecb_inline static __inline__
491#elif ECB_C99 872#elif ECB_C99
492 #define ecb_inline static inline 873 #define ecb_inline static inline
493#else 874#else
494 #define ecb_inline static 875 #define ecb_inline static
495#endif 876#endif
496 877
497#ifndef ECB_MEMORY_FENCE
498 #if ECB_GCC_VERSION(2,5)
499 #if __x86
500 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
501 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
502 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE /* better be safe than sorry */
503 #elif __amd64
504 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
505 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")
506 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence")
507 #endif
508 #endif
509#endif
510
511#ifndef ECB_MEMORY_FENCE
512 #if ECB_GCC_VERSION(4,4)
513 #define ECB_MEMORY_FENCE __sync_synchronize ()
514 #define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); })
515 #define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); })
516 #elif _MSC_VER >= 1400
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) 878#if ECB_GCC_VERSION(3,3)
879 #define ecb_restrict __restrict__
880#elif ECB_C99
881 #define ecb_restrict restrict
882#else
883 #define ecb_restrict
884#endif
885
886typedef int ecb_bool;
887
888#define ECB_CONCAT_(a, b) a ## b
889#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
890#define ECB_STRINGIFY_(a) # a
891#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
892#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
893
894#define ecb_function_ ecb_inline
895
896#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
537 #define ecb_attribute(attrlist) __attribute__(attrlist) 897 #define ecb_attribute(attrlist) __attribute__ (attrlist)
898#else
899 #define ecb_attribute(attrlist)
900#endif
901
902#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
538 #define ecb_is_constant(expr) __builtin_constant_p (expr) 903 #define ecb_is_constant(expr) __builtin_constant_p (expr)
904#else
905 /* possible C11 impl for integral types
906 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
907 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
908
909 #define ecb_is_constant(expr) 0
910#endif
911
912#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
539 #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) 913 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
914#else
915 #define ecb_expect(expr,value) (expr)
916#endif
917
918#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
540 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) 919 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
541#else 920#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) 921 #define ecb_prefetch(addr,rw,locality)
546#endif 922#endif
547 923
924/* no emulation for ecb_decltype */
925#if ECB_CPP11
926 // older implementations might have problems with decltype(x)::type, work around it
927 template<class T> struct ecb_decltype_t { typedef T type; };
928 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
929#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
930 #define ecb_decltype(x) __typeof__ (x)
931#endif
932
933#if _MSC_VER >= 1300
934 #define ecb_deprecated __declspec (deprecated)
935#else
936 #define ecb_deprecated ecb_attribute ((__deprecated__))
937#endif
938
939#if _MSC_VER >= 1500
940 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
941#elif ECB_GCC_VERSION(4,5)
942 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
943#else
944 #define ecb_deprecated_message(msg) ecb_deprecated
945#endif
946
947#if _MSC_VER >= 1400
948 #define ecb_noinline __declspec (noinline)
949#else
548#define ecb_noinline ecb_attribute ((__noinline__)) 950 #define ecb_noinline ecb_attribute ((__noinline__))
549#define ecb_noreturn ecb_attribute ((__noreturn__)) 951#endif
952
550#define ecb_unused ecb_attribute ((__unused__)) 953#define ecb_unused ecb_attribute ((__unused__))
551#define ecb_const ecb_attribute ((__const__)) 954#define ecb_const ecb_attribute ((__const__))
552#define ecb_pure ecb_attribute ((__pure__)) 955#define ecb_pure ecb_attribute ((__pure__))
956
957#if ECB_C11 || __IBMC_NORETURN
958 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
959 #define ecb_noreturn _Noreturn
960#elif ECB_CPP11
961 #define ecb_noreturn [[noreturn]]
962#elif _MSC_VER >= 1200
963 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
964 #define ecb_noreturn __declspec (noreturn)
965#else
966 #define ecb_noreturn ecb_attribute ((__noreturn__))
967#endif
553 968
554#if ECB_GCC_VERSION(4,3) 969#if ECB_GCC_VERSION(4,3)
555 #define ecb_artificial ecb_attribute ((__artificial__)) 970 #define ecb_artificial ecb_attribute ((__artificial__))
556 #define ecb_hot ecb_attribute ((__hot__)) 971 #define ecb_hot ecb_attribute ((__hot__))
557 #define ecb_cold ecb_attribute ((__cold__)) 972 #define ecb_cold ecb_attribute ((__cold__))
… …
564/* put around conditional expressions if you are very sure that the */ 979/* put around conditional expressions if you are very sure that the */
565/* expression is mostly true or mostly false. note that these return */ 980/* expression is mostly true or mostly false. note that these return */
566/* booleans, not the expression. */ 981/* booleans, not the expression. */
567#define ecb_expect_false(expr) ecb_expect (!!(expr), 0) 982#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
568#define ecb_expect_true(expr) ecb_expect (!!(expr), 1) 983#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
569/* ecb.h end */ 984/* for compatibility to the rest of the world */
985#define ecb_likely(expr) ecb_expect_true (expr)
986#define ecb_unlikely(expr) ecb_expect_false (expr)
570 987
571#define expect_false(cond) ecb_expect_false (cond) 988/* count trailing zero bits and count # of one bits */
572#define expect_true(cond) ecb_expect_true (cond) 989#if ECB_GCC_VERSION(3,4) \
573#define noinline ecb_noinline 990 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
991 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
992 && ECB_CLANG_BUILTIN(__builtin_popcount))
993 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
994 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
995 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
996 #define ecb_ctz32(x) __builtin_ctz (x)
997 #define ecb_ctz64(x) __builtin_ctzll (x)
998 #define ecb_popcount32(x) __builtin_popcount (x)
999 /* no popcountll */
1000#else
1001 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
1002 ecb_function_ ecb_const int
1003 ecb_ctz32 (uint32_t x)
1004 {
1005#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1006 unsigned long r;
1007 _BitScanForward (&r, x);
1008 return (int)r;
1009#else
1010 int r = 0;
1011
1012 x &= ~x + 1; /* this isolates the lowest bit */
1013
1014#if ECB_branchless_on_i386
1015 r += !!(x & 0xaaaaaaaa) << 0;
1016 r += !!(x & 0xcccccccc) << 1;
1017 r += !!(x & 0xf0f0f0f0) << 2;
1018 r += !!(x & 0xff00ff00) << 3;
1019 r += !!(x & 0xffff0000) << 4;
1020#else
1021 if (x & 0xaaaaaaaa) r += 1;
1022 if (x & 0xcccccccc) r += 2;
1023 if (x & 0xf0f0f0f0) r += 4;
1024 if (x & 0xff00ff00) r += 8;
1025 if (x & 0xffff0000) r += 16;
1026#endif
1027
1028 return r;
1029#endif
1030 }
1031
1032 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
1033 ecb_function_ ecb_const int
1034 ecb_ctz64 (uint64_t x)
1035 {
1036#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1037 unsigned long r;
1038 _BitScanForward64 (&r, x);
1039 return (int)r;
1040#else
1041 int shift = x & 0xffffffff ? 0 : 32;
1042 return ecb_ctz32 (x >> shift) + shift;
1043#endif
1044 }
1045
1046 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
1047 ecb_function_ ecb_const int
1048 ecb_popcount32 (uint32_t x)
1049 {
1050 x -= (x >> 1) & 0x55555555;
1051 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
1052 x = ((x >> 4) + x) & 0x0f0f0f0f;
1053 x *= 0x01010101;
1054
1055 return x >> 24;
1056 }
1057
1058 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
1059 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
1060 {
1061#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1062 unsigned long r;
1063 _BitScanReverse (&r, x);
1064 return (int)r;
1065#else
1066 int r = 0;
1067
1068 if (x >> 16) { x >>= 16; r += 16; }
1069 if (x >> 8) { x >>= 8; r += 8; }
1070 if (x >> 4) { x >>= 4; r += 4; }
1071 if (x >> 2) { x >>= 2; r += 2; }
1072 if (x >> 1) { r += 1; }
1073
1074 return r;
1075#endif
1076 }
1077
1078 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
1079 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
1080 {
1081#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1082 unsigned long r;
1083 _BitScanReverse64 (&r, x);
1084 return (int)r;
1085#else
1086 int r = 0;
1087
1088 if (x >> 32) { x >>= 32; r += 32; }
1089
1090 return r + ecb_ld32 (x);
1091#endif
1092 }
1093#endif
1094
1095ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1096ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1097ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1098ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1099
1100ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1101ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1102{
1103 return ( (x * 0x0802U & 0x22110U)
1104 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1105}
1106
1107ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1108ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1109{
1110 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1111 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1112 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1113 x = ( x >> 8 ) | ( x << 8);
1114
1115 return x;
1116}
1117
1118ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1119ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1120{
1121 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1122 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1123 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1124 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1125 x = ( x >> 16 ) | ( x << 16);
1126
1127 return x;
1128}
1129
1130/* popcount64 is only available on 64 bit cpus as gcc builtin */
1131/* so for this version we are lazy */
1132ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
1133ecb_function_ ecb_const int
1134ecb_popcount64 (uint64_t x)
1135{
1136 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
1137}
1138
1139ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
1140ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
1141ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
1142ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
1143ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
1144ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
1145ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
1146ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
1147
1148ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
1149ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
1150ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
1151ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
1152ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1153ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1154ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1155ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1156
1157#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1158 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1159 #define ecb_bswap16(x) __builtin_bswap16 (x)
1160 #else
1161 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1162 #endif
1163 #define ecb_bswap32(x) __builtin_bswap32 (x)
1164 #define ecb_bswap64(x) __builtin_bswap64 (x)
1165#elif _MSC_VER
1166 #include <stdlib.h>
1167 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1168 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1169 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
1170#else
1171 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1172 ecb_function_ ecb_const uint16_t
1173 ecb_bswap16 (uint16_t x)
1174 {
1175 return ecb_rotl16 (x, 8);
1176 }
1177
1178 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1179 ecb_function_ ecb_const uint32_t
1180 ecb_bswap32 (uint32_t x)
1181 {
1182 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1183 }
1184
1185 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1186 ecb_function_ ecb_const uint64_t
1187 ecb_bswap64 (uint64_t x)
1188 {
1189 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1190 }
1191#endif
1192
1193#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1194 #define ecb_unreachable() __builtin_unreachable ()
1195#else
1196 /* this seems to work fine, but gcc always emits a warning for it :/ */
1197 ecb_inline ecb_noreturn void ecb_unreachable (void);
1198 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1199#endif
1200
1201/* try to tell the compiler that some condition is definitely true */
1202#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1203
1204ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1205ecb_inline ecb_const uint32_t
1206ecb_byteorder_helper (void)
1207{
1208 /* the union code still generates code under pressure in gcc, */
1209 /* but less than using pointers, and always seems to */
1210 /* successfully return a constant. */
1211 /* the reason why we have this horrible preprocessor mess */
1212 /* is to avoid it in all cases, at least on common architectures */
1213 /* or when using a recent enough gcc version (>= 4.6) */
1214#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1215 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1216 #define ECB_LITTLE_ENDIAN 1
1217 return 0x44332211;
1218#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1219 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1220 #define ECB_BIG_ENDIAN 1
1221 return 0x11223344;
1222#else
1223 union
1224 {
1225 uint8_t c[4];
1226 uint32_t u;
1227 } u = { 0x11, 0x22, 0x33, 0x44 };
1228 return u.u;
1229#endif
1230}
1231
1232ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1233ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1234ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1235ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1236
1237#if ECB_GCC_VERSION(3,0) || ECB_C99
1238 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1239#else
1240 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1241#endif
1242
1243#if ECB_CPP
1244 template<typename T>
1245 static inline T ecb_div_rd (T val, T div)
1246 {
1247 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1248 }
1249 template<typename T>
1250 static inline T ecb_div_ru (T val, T div)
1251 {
1252 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1253 }
1254#else
1255 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1256 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1257#endif
1258
1259#if ecb_cplusplus_does_not_suck
1260 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1261 template<typename T, int N>
1262 static inline int ecb_array_length (const T (&arr)[N])
1263 {
1264 return N;
1265 }
1266#else
1267 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1268#endif
1269
1270ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1271ecb_function_ ecb_const uint32_t
1272ecb_binary16_to_binary32 (uint32_t x)
1273{
1274 unsigned int s = (x & 0x8000) << (31 - 15);
1275 int e = (x >> 10) & 0x001f;
1276 unsigned int m = x & 0x03ff;
1277
1278 if (ecb_expect_false (e == 31))
1279 /* infinity or NaN */
1280 e = 255 - (127 - 15);
1281 else if (ecb_expect_false (!e))
1282 {
1283 if (ecb_expect_true (!m))
1284 /* zero, handled by code below by forcing e to 0 */
1285 e = 0 - (127 - 15);
1286 else
1287 {
1288 /* subnormal, renormalise */
1289 unsigned int s = 10 - ecb_ld32 (m);
1290
1291 m = (m << s) & 0x3ff; /* mask implicit bit */
1292 e -= s - 1;
1293 }
1294 }
1295
1296 /* e and m now are normalised, or zero, (or inf or nan) */
1297 e += 127 - 15;
1298
1299 return s | (e << 23) | (m << (23 - 10));
1300}
1301
1302ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1303ecb_function_ ecb_const uint16_t
1304ecb_binary32_to_binary16 (uint32_t x)
1305{
1306 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1307 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1308 unsigned int m = x & 0x007fffff;
1309
1310 x &= 0x7fffffff;
1311
1312 /* if it's within range of binary16 normals, use fast path */
1313 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1314 {
1315 /* mantissa round-to-even */
1316 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1317
1318 /* handle overflow */
1319 if (ecb_expect_false (m >= 0x00800000))
1320 {
1321 m >>= 1;
1322 e += 1;
1323 }
1324
1325 return s | (e << 10) | (m >> (23 - 10));
1326 }
1327
1328 /* handle large numbers and infinity */
1329 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1330 return s | 0x7c00;
1331
1332 /* handle zero, subnormals and small numbers */
1333 if (ecb_expect_true (x < 0x38800000))
1334 {
1335 /* zero */
1336 if (ecb_expect_true (!x))
1337 return s;
1338
1339 /* handle subnormals */
1340
1341 /* too small, will be zero */
1342 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1343 return s;
1344
1345 m |= 0x00800000; /* make implicit bit explicit */
1346
1347 /* very tricky - we need to round to the nearest e (+10) bit value */
1348 {
1349 unsigned int bits = 14 - e;
1350 unsigned int half = (1 << (bits - 1)) - 1;
1351 unsigned int even = (m >> bits) & 1;
1352
1353 /* if this overflows, we will end up with a normalised number */
1354 m = (m + half + even) >> bits;
1355 }
1356
1357 return s | m;
1358 }
1359
1360 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1361 m >>= 13;
1362
1363 return s | 0x7c00 | m | !m;
1364}
1365
1366/*******************************************************************************/
1367/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1368
1369/* basically, everything uses "ieee pure-endian" floating point numbers */
1370/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1371#if 0 \
1372 || __i386 || __i386__ \
1373 || ECB_GCC_AMD64 \
1374 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1375 || defined __s390__ || defined __s390x__ \
1376 || defined __mips__ \
1377 || defined __alpha__ \
1378 || defined __hppa__ \
1379 || defined __ia64__ \
1380 || defined __m68k__ \
1381 || defined __m88k__ \
1382 || defined __sh__ \
1383 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1384 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1385 || defined __aarch64__
1386 #define ECB_STDFP 1
1387 #include <string.h> /* for memcpy */
1388#else
1389 #define ECB_STDFP 0
1390#endif
1391
1392#ifndef ECB_NO_LIBM
1393
1394 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1395
1396 /* only the oldest of old doesn't have this one. solaris. */
1397 #ifdef INFINITY
1398 #define ECB_INFINITY INFINITY
1399 #else
1400 #define ECB_INFINITY HUGE_VAL
1401 #endif
1402
1403 #ifdef NAN
1404 #define ECB_NAN NAN
1405 #else
1406 #define ECB_NAN ECB_INFINITY
1407 #endif
1408
1409 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1410 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1411 #define ecb_frexpf(x,e) frexpf ((x), (e))
1412 #else
1413 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1414 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1415 #endif
1416
1417 /* convert a float to ieee single/binary32 */
1418 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1419 ecb_function_ ecb_const uint32_t
1420 ecb_float_to_binary32 (float x)
1421 {
1422 uint32_t r;
1423
1424 #if ECB_STDFP
1425 memcpy (&r, &x, 4);
1426 #else
1427 /* slow emulation, works for anything but -0 */
1428 uint32_t m;
1429 int e;
1430
1431 if (x == 0e0f ) return 0x00000000U;
1432 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1433 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1434 if (x != x ) return 0x7fbfffffU;
1435
1436 m = ecb_frexpf (x, &e) * 0x1000000U;
1437
1438 r = m & 0x80000000U;
1439
1440 if (r)
1441 m = -m;
1442
1443 if (e <= -126)
1444 {
1445 m &= 0xffffffU;
1446 m >>= (-125 - e);
1447 e = -126;
1448 }
1449
1450 r |= (e + 126) << 23;
1451 r |= m & 0x7fffffU;
1452 #endif
1453
1454 return r;
1455 }
1456
1457 /* converts an ieee single/binary32 to a float */
1458 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1459 ecb_function_ ecb_const float
1460 ecb_binary32_to_float (uint32_t x)
1461 {
1462 float r;
1463
1464 #if ECB_STDFP
1465 memcpy (&r, &x, 4);
1466 #else
1467 /* emulation, only works for normals and subnormals and +0 */
1468 int neg = x >> 31;
1469 int e = (x >> 23) & 0xffU;
1470
1471 x &= 0x7fffffU;
1472
1473 if (e)
1474 x |= 0x800000U;
1475 else
1476 e = 1;
1477
1478 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1479 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1480
1481 r = neg ? -r : r;
1482 #endif
1483
1484 return r;
1485 }
1486
1487 /* convert a double to ieee double/binary64 */
1488 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1489 ecb_function_ ecb_const uint64_t
1490 ecb_double_to_binary64 (double x)
1491 {
1492 uint64_t r;
1493
1494 #if ECB_STDFP
1495 memcpy (&r, &x, 8);
1496 #else
1497 /* slow emulation, works for anything but -0 */
1498 uint64_t m;
1499 int e;
1500
1501 if (x == 0e0 ) return 0x0000000000000000U;
1502 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1503 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1504 if (x != x ) return 0X7ff7ffffffffffffU;
1505
1506 m = frexp (x, &e) * 0x20000000000000U;
1507
1508 r = m & 0x8000000000000000;;
1509
1510 if (r)
1511 m = -m;
1512
1513 if (e <= -1022)
1514 {
1515 m &= 0x1fffffffffffffU;
1516 m >>= (-1021 - e);
1517 e = -1022;
1518 }
1519
1520 r |= ((uint64_t)(e + 1022)) << 52;
1521 r |= m & 0xfffffffffffffU;
1522 #endif
1523
1524 return r;
1525 }
1526
1527 /* converts an ieee double/binary64 to a double */
1528 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1529 ecb_function_ ecb_const double
1530 ecb_binary64_to_double (uint64_t x)
1531 {
1532 double r;
1533
1534 #if ECB_STDFP
1535 memcpy (&r, &x, 8);
1536 #else
1537 /* emulation, only works for normals and subnormals and +0 */
1538 int neg = x >> 63;
1539 int e = (x >> 52) & 0x7ffU;
1540
1541 x &= 0xfffffffffffffU;
1542
1543 if (e)
1544 x |= 0x10000000000000U;
1545 else
1546 e = 1;
1547
1548 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1549 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1550
1551 r = neg ? -r : r;
1552 #endif
1553
1554 return r;
1555 }
1556
1557 /* convert a float to ieee half/binary16 */
1558 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1559 ecb_function_ ecb_const uint16_t
1560 ecb_float_to_binary16 (float x)
1561 {
1562 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1563 }
1564
1565 /* convert an ieee half/binary16 to float */
1566 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1567 ecb_function_ ecb_const float
1568 ecb_binary16_to_float (uint16_t x)
1569 {
1570 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1571 }
1572
1573#endif
1574
1575#endif
1576
1577/* ECB.H END */
1578
1579#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1580/* if your architecture doesn't need memory fences, e.g. because it is
1581 * single-cpu/core, or if you use libev in a project that doesn't use libev
1582 * from multiple threads, then you can define ECB_NO_THREADS when compiling
1583 * libev, in which cases the memory fences become nops.
1584 * alternatively, you can remove this #error and link against libpthread,
1585 * which will then provide the memory fences.
1586 */
1587# error "memory fences not defined for your architecture, please report"
1588#endif
1589
1590#ifndef ECB_MEMORY_FENCE
1591# define ECB_MEMORY_FENCE do { } while (0)
1592# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1593# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1594#endif
574 1595
575#define inline_size ecb_inline 1596#define inline_size ecb_inline
576 1597
577#if EV_FEATURE_CODE 1598#if EV_FEATURE_CODE
578# define inline_speed ecb_inline 1599# define inline_speed ecb_inline
579#else 1600#else
580# define inline_speed static noinline 1601# define inline_speed ecb_noinline static
581#endif 1602#endif
1603
1604/*****************************************************************************/
1605/* raw syscall wrappers */
1606
1607#if EV_NEED_SYSCALL
1608
1609#include <sys/syscall.h>
1610
1611/*
1612 * define some syscall wrappers for common architectures
1613 * this is mostly for nice looks during debugging, not performance.
1614 * our syscalls return < 0, not == -1, on error. which is good
1615 * enough for linux aio.
1616 * TODO: arm is also common nowadays, maybe even mips and x86
1617 * TODO: after implementing this, it suddenly looks like overkill, but its hard to remove...
1618 */
1619#if __GNUC__ && __linux && ECB_AMD64 && !defined __OPTIMIZE_SIZE__
1620 /* the costly errno access probably kills this for size optimisation */
1621
1622 #define ev_syscall(nr,narg,arg1,arg2,arg3,arg4,arg5,arg6) \
1623 ({ \
1624 long res; \
1625 register unsigned long r6 __asm__ ("r9" ); \
1626 register unsigned long r5 __asm__ ("r8" ); \
1627 register unsigned long r4 __asm__ ("r10"); \
1628 register unsigned long r3 __asm__ ("rdx"); \
1629 register unsigned long r2 __asm__ ("rsi"); \
1630 register unsigned long r1 __asm__ ("rdi"); \
1631 if (narg >= 6) r6 = (unsigned long)(arg6); \
1632 if (narg >= 5) r5 = (unsigned long)(arg5); \
1633 if (narg >= 4) r4 = (unsigned long)(arg4); \
1634 if (narg >= 3) r3 = (unsigned long)(arg3); \
1635 if (narg >= 2) r2 = (unsigned long)(arg2); \
1636 if (narg >= 1) r1 = (unsigned long)(arg1); \
1637 __asm__ __volatile__ ( \
1638 "syscall\n\t" \
1639 : "=a" (res) \
1640 : "0" (nr), "r" (r1), "r" (r2), "r" (r3), "r" (r4), "r" (r5) \
1641 : "cc", "r11", "cx", "memory"); \
1642 errno = -res; \
1643 res; \
1644 })
1645
1646#endif
1647
1648#ifdef ev_syscall
1649 #define ev_syscall0(nr) ev_syscall (nr, 0, 0, 0, 0, 0, 0, 0)
1650 #define ev_syscall1(nr,arg1) ev_syscall (nr, 1, arg1, 0, 0, 0, 0, 0)
1651 #define ev_syscall2(nr,arg1,arg2) ev_syscall (nr, 2, arg1, arg2, 0, 0, 0, 0)
1652 #define ev_syscall3(nr,arg1,arg2,arg3) ev_syscall (nr, 3, arg1, arg2, arg3, 0, 0, 0)
1653 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) ev_syscall (nr, 3, arg1, arg2, arg3, arg4, 0, 0)
1654 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) ev_syscall (nr, 5, arg1, arg2, arg3, arg4, arg5, 0)
1655 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) ev_syscall (nr, 6, arg1, arg2, arg3, arg4, arg5,arg6)
1656#else
1657 #define ev_syscall0(nr) syscall (nr)
1658 #define ev_syscall1(nr,arg1) syscall (nr, arg1)
1659 #define ev_syscall2(nr,arg1,arg2) syscall (nr, arg1, arg2)
1660 #define ev_syscall3(nr,arg1,arg2,arg3) syscall (nr, arg1, arg2, arg3)
1661 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) syscall (nr, arg1, arg2, arg3, arg4)
1662 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) syscall (nr, arg1, arg2, arg3, arg4, arg5)
1663 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) syscall (nr, arg1, arg2, arg3, arg4, arg5,arg6)
1664#endif
1665
1666#endif
1667
1668/*****************************************************************************/
582 1669
583#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1670#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
584 1671
585#if EV_MINPRI == EV_MAXPRI 1672#if EV_MINPRI == EV_MAXPRI
586# define ABSPRI(w) (((W)w), 0) 1673# define ABSPRI(w) (((W)w), 0)
587#else 1674#else
588# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1675# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
589#endif 1676#endif
590 1677
591#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1678#define EMPTY /* required for microsofts broken pseudo-c compiler */
592#define EMPTY2(a,b) /* used to suppress some warnings */
593 1679
594typedef ev_watcher *W; 1680typedef ev_watcher *W;
595typedef ev_watcher_list *WL; 1681typedef ev_watcher_list *WL;
596typedef ev_watcher_time *WT; 1682typedef ev_watcher_time *WT;
597 1683
… …
622# include "ev_win32.c" 1708# include "ev_win32.c"
623#endif 1709#endif
624 1710
625/*****************************************************************************/ 1711/*****************************************************************************/
626 1712
1713#if EV_USE_LINUXAIO
1714# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1715#endif
1716
627/* define a suitable floor function (only used by periodics atm) */ 1717/* define a suitable floor function (only used by periodics atm) */
628 1718
629#if EV_USE_FLOOR 1719#if EV_USE_FLOOR
630# include <math.h> 1720# include <math.h>
631# define ev_floor(v) floor (v) 1721# define ev_floor(v) floor (v)
632#else 1722#else
633 1723
634#include <float.h> 1724#include <float.h>
635 1725
636/* a floor() replacement function, should be independent of ev_tstamp type */ 1726/* a floor() replacement function, should be independent of ev_tstamp type */
1727ecb_noinline
637static ev_tstamp noinline 1728static ev_tstamp
638ev_floor (ev_tstamp v) 1729ev_floor (ev_tstamp v)
639{ 1730{
640 /* the choice of shift factor is not terribly important */ 1731 /* the choice of shift factor is not terribly important */
641#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1732#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
642 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1733 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
643#else 1734#else
644 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; 1735 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
645#endif 1736#endif
646 1737
1738 /* special treatment for negative arguments */
1739 if (ecb_expect_false (v < 0.))
1740 {
1741 ev_tstamp f = -ev_floor (-v);
1742
1743 return f - (f == v ? 0 : 1);
1744 }
1745
647 /* argument too large for an unsigned long? */ 1746 /* argument too large for an unsigned long? then reduce it */
648 if (expect_false (v >= shift)) 1747 if (ecb_expect_false (v >= shift))
649 { 1748 {
650 ev_tstamp f; 1749 ev_tstamp f;
651 1750
652 if (v == v - 1.) 1751 if (v == v - 1.)
653 return v; /* very large number */ 1752 return v; /* very large numbers are assumed to be integer */
654 1753
655 f = shift * ev_floor (v * (1. / shift)); 1754 f = shift * ev_floor (v * (1. / shift));
656 return f + ev_floor (v - f); 1755 return f + ev_floor (v - f);
657 } 1756 }
658 1757
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 */ 1758 /* fits into an unsigned long */
668 return (unsigned long)v; 1759 return (unsigned long)v;
669} 1760}
670 1761
671#endif 1762#endif
… …
674 1765
675#ifdef __linux 1766#ifdef __linux
676# include <sys/utsname.h> 1767# include <sys/utsname.h>
677#endif 1768#endif
678 1769
679static unsigned int noinline ecb_cold 1770ecb_noinline ecb_cold
1771static unsigned int
680ev_linux_version (void) 1772ev_linux_version (void)
681{ 1773{
682#ifdef __linux 1774#ifdef __linux
683 unsigned int v = 0; 1775 unsigned int v = 0;
684 struct utsname buf; 1776 struct utsname buf;
… …
713} 1805}
714 1806
715/*****************************************************************************/ 1807/*****************************************************************************/
716 1808
717#if EV_AVOID_STDIO 1809#if EV_AVOID_STDIO
718static void noinline ecb_cold 1810ecb_noinline ecb_cold
1811static void
719ev_printerr (const char *msg) 1812ev_printerr (const char *msg)
720{ 1813{
721 write (STDERR_FILENO, msg, strlen (msg)); 1814 write (STDERR_FILENO, msg, strlen (msg));
722} 1815}
723#endif 1816#endif
724 1817
725static void (*syserr_cb)(const char *msg); 1818static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
726 1819
727void ecb_cold 1820ecb_cold
1821void
728ev_set_syserr_cb (void (*cb)(const char *msg)) 1822ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
729{ 1823{
730 syserr_cb = cb; 1824 syserr_cb = cb;
731} 1825}
732 1826
733static void noinline ecb_cold 1827ecb_noinline ecb_cold
1828static void
734ev_syserr (const char *msg) 1829ev_syserr (const char *msg)
735{ 1830{
736 if (!msg) 1831 if (!msg)
737 msg = "(libev) system error"; 1832 msg = "(libev) system error";
738 1833
… …
751 abort (); 1846 abort ();
752 } 1847 }
753} 1848}
754 1849
755static void * 1850static void *
756ev_realloc_emul (void *ptr, long size) 1851ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
757{ 1852{
758#if __GLIBC__
759 return realloc (ptr, size);
760#else
761 /* some systems, notably openbsd and darwin, fail to properly 1853 /* some systems, notably openbsd and darwin, fail to properly
762 * implement realloc (x, 0) (as required by both ansi c-89 and 1854 * implement realloc (x, 0) (as required by both ansi c-89 and
763 * the single unix specification, so work around them here. 1855 * the single unix specification, so work around them here.
1856 * recently, also (at least) fedora and debian started breaking it,
1857 * despite documenting it otherwise.
764 */ 1858 */
765 1859
766 if (size) 1860 if (size)
767 return realloc (ptr, size); 1861 return realloc (ptr, size);
768 1862
769 free (ptr); 1863 free (ptr);
770 return 0; 1864 return 0;
771#endif
772} 1865}
773 1866
774static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1867static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
775 1868
776void ecb_cold 1869ecb_cold
1870void
777ev_set_allocator (void *(*cb)(void *ptr, long size)) 1871ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
778{ 1872{
779 alloc = cb; 1873 alloc = cb;
780} 1874}
781 1875
782inline_speed void * 1876inline_speed void *
… …
809typedef struct 1903typedef struct
810{ 1904{
811 WL head; 1905 WL head;
812 unsigned char events; /* the events watched for */ 1906 unsigned char events; /* the events watched for */
813 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 1907 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
814 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1908 unsigned char emask; /* some backends store the actual kernel mask in here */
815 unsigned char unused; 1909 unsigned char eflags; /* flags field for use by backends */
816#if EV_USE_EPOLL 1910#if EV_USE_EPOLL
817 unsigned int egen; /* generation counter to counter epoll bugs */ 1911 unsigned int egen; /* generation counter to counter epoll bugs */
818#endif 1912#endif
819#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 1913#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
820 SOCKET handle; 1914 SOCKET handle;
… …
870 #undef VAR 1964 #undef VAR
871 }; 1965 };
872 #include "ev_wrap.h" 1966 #include "ev_wrap.h"
873 1967
874 static struct ev_loop default_loop_struct; 1968 static struct ev_loop default_loop_struct;
875 struct ev_loop *ev_default_loop_ptr; 1969 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
876 1970
877#else 1971#else
878 1972
879 ev_tstamp ev_rt_now; 1973 EV_API_DECL ev_tstamp ev_rt_now = EV_TS_CONST (0.); /* needs to be initialised to make it a definition despite extern */
880 #define VAR(name,decl) static decl; 1974 #define VAR(name,decl) static decl;
881 #include "ev_vars.h" 1975 #include "ev_vars.h"
882 #undef VAR 1976 #undef VAR
883 1977
884 static int ev_default_loop_ptr; 1978 static int ev_default_loop_ptr;
885 1979
886#endif 1980#endif
887 1981
888#if EV_FEATURE_API 1982#if EV_FEATURE_API
889# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1983# define EV_RELEASE_CB if (ecb_expect_false (release_cb)) release_cb (EV_A)
890# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 1984# define EV_ACQUIRE_CB if (ecb_expect_false (acquire_cb)) acquire_cb (EV_A)
891# define EV_INVOKE_PENDING invoke_cb (EV_A) 1985# define EV_INVOKE_PENDING invoke_cb (EV_A)
892#else 1986#else
893# define EV_RELEASE_CB (void)0 1987# define EV_RELEASE_CB (void)0
894# define EV_ACQUIRE_CB (void)0 1988# define EV_ACQUIRE_CB (void)0
895# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1989# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
… …
899 1993
900/*****************************************************************************/ 1994/*****************************************************************************/
901 1995
902#ifndef EV_HAVE_EV_TIME 1996#ifndef EV_HAVE_EV_TIME
903ev_tstamp 1997ev_tstamp
904ev_time (void) 1998ev_time (void) EV_NOEXCEPT
905{ 1999{
906#if EV_USE_REALTIME 2000#if EV_USE_REALTIME
907 if (expect_true (have_realtime)) 2001 if (ecb_expect_true (have_realtime))
908 { 2002 {
909 struct timespec ts; 2003 struct timespec ts;
910 clock_gettime (CLOCK_REALTIME, &ts); 2004 clock_gettime (CLOCK_REALTIME, &ts);
911 return ts.tv_sec + ts.tv_nsec * 1e-9; 2005 return EV_TS_GET (ts);
912 } 2006 }
913#endif 2007#endif
914 2008
2009 {
915 struct timeval tv; 2010 struct timeval tv;
916 gettimeofday (&tv, 0); 2011 gettimeofday (&tv, 0);
917 return tv.tv_sec + tv.tv_usec * 1e-6; 2012 return EV_TV_GET (tv);
2013 }
918} 2014}
919#endif 2015#endif
920 2016
921inline_size ev_tstamp 2017inline_size ev_tstamp
922get_clock (void) 2018get_clock (void)
923{ 2019{
924#if EV_USE_MONOTONIC 2020#if EV_USE_MONOTONIC
925 if (expect_true (have_monotonic)) 2021 if (ecb_expect_true (have_monotonic))
926 { 2022 {
927 struct timespec ts; 2023 struct timespec ts;
928 clock_gettime (CLOCK_MONOTONIC, &ts); 2024 clock_gettime (CLOCK_MONOTONIC, &ts);
929 return ts.tv_sec + ts.tv_nsec * 1e-9; 2025 return EV_TS_GET (ts);
930 } 2026 }
931#endif 2027#endif
932 2028
933 return ev_time (); 2029 return ev_time ();
934} 2030}
935 2031
936#if EV_MULTIPLICITY 2032#if EV_MULTIPLICITY
937ev_tstamp 2033ev_tstamp
938ev_now (EV_P) 2034ev_now (EV_P) EV_NOEXCEPT
939{ 2035{
940 return ev_rt_now; 2036 return ev_rt_now;
941} 2037}
942#endif 2038#endif
943 2039
944void 2040void
945ev_sleep (ev_tstamp delay) 2041ev_sleep (ev_tstamp delay) EV_NOEXCEPT
946{ 2042{
947 if (delay > 0.) 2043 if (delay > EV_TS_CONST (0.))
948 { 2044 {
949#if EV_USE_NANOSLEEP 2045#if EV_USE_NANOSLEEP
950 struct timespec ts; 2046 struct timespec ts;
951 2047
952 EV_TS_SET (ts, delay); 2048 EV_TS_SET (ts, delay);
953 nanosleep (&ts, 0); 2049 nanosleep (&ts, 0);
954#elif defined(_WIN32) 2050#elif defined _WIN32
2051 /* maybe this should round up, as ms is very low resolution */
2052 /* compared to select (µs) or nanosleep (ns) */
955 Sleep ((unsigned long)(delay * 1e3)); 2053 Sleep ((unsigned long)(EV_TS_TO_MSEC (delay)));
956#else 2054#else
957 struct timeval tv; 2055 struct timeval tv;
958 2056
959 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 2057 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
960 /* something not guaranteed by newer posix versions, but guaranteed */ 2058 /* something not guaranteed by newer posix versions, but guaranteed */
… …
978 2076
979 do 2077 do
980 ncur <<= 1; 2078 ncur <<= 1;
981 while (cnt > ncur); 2079 while (cnt > ncur);
982 2080
983 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 2081 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
984 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 2082 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
985 { 2083 {
986 ncur *= elem; 2084 ncur *= elem;
987 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 2085 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
988 ncur = ncur - sizeof (void *) * 4; 2086 ncur = ncur - sizeof (void *) * 4;
… …
990 } 2088 }
991 2089
992 return ncur; 2090 return ncur;
993} 2091}
994 2092
995static void * noinline ecb_cold 2093ecb_noinline ecb_cold
2094static void *
996array_realloc (int elem, void *base, int *cur, int cnt) 2095array_realloc (int elem, void *base, int *cur, int cnt)
997{ 2096{
998 *cur = array_nextsize (elem, *cur, cnt); 2097 *cur = array_nextsize (elem, *cur, cnt);
999 return ev_realloc (base, elem * *cur); 2098 return ev_realloc (base, elem * *cur);
1000} 2099}
1001 2100
2101#define array_needsize_noinit(base,offset,count)
2102
1002#define array_init_zero(base,count) \ 2103#define array_needsize_zerofill(base,offset,count) \
1003 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2104 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
1004 2105
1005#define array_needsize(type,base,cur,cnt,init) \ 2106#define array_needsize(type,base,cur,cnt,init) \
1006 if (expect_false ((cnt) > (cur))) \ 2107 if (ecb_expect_false ((cnt) > (cur))) \
1007 { \ 2108 { \
1008 int ecb_unused ocur_ = (cur); \ 2109 ecb_unused int ocur_ = (cur); \
1009 (base) = (type *)array_realloc \ 2110 (base) = (type *)array_realloc \
1010 (sizeof (type), (base), &(cur), (cnt)); \ 2111 (sizeof (type), (base), &(cur), (cnt)); \
1011 init ((base) + (ocur_), (cur) - ocur_); \ 2112 init ((base), ocur_, ((cur) - ocur_)); \
1012 } 2113 }
1013 2114
1014#if 0 2115#if 0
1015#define array_slim(type,stem) \ 2116#define array_slim(type,stem) \
1016 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2117 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 2126 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
1026 2127
1027/*****************************************************************************/ 2128/*****************************************************************************/
1028 2129
1029/* dummy callback for pending events */ 2130/* dummy callback for pending events */
1030static void noinline 2131ecb_noinline
2132static void
1031pendingcb (EV_P_ ev_prepare *w, int revents) 2133pendingcb (EV_P_ ev_prepare *w, int revents)
1032{ 2134{
1033} 2135}
1034 2136
1035void noinline 2137ecb_noinline
2138void
1036ev_feed_event (EV_P_ void *w, int revents) 2139ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
1037{ 2140{
1038 W w_ = (W)w; 2141 W w_ = (W)w;
1039 int pri = ABSPRI (w_); 2142 int pri = ABSPRI (w_);
1040 2143
1041 if (expect_false (w_->pending)) 2144 if (ecb_expect_false (w_->pending))
1042 pendings [pri][w_->pending - 1].events |= revents; 2145 pendings [pri][w_->pending - 1].events |= revents;
1043 else 2146 else
1044 { 2147 {
1045 w_->pending = ++pendingcnt [pri]; 2148 w_->pending = ++pendingcnt [pri];
1046 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2149 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
1047 pendings [pri][w_->pending - 1].w = w_; 2150 pendings [pri][w_->pending - 1].w = w_;
1048 pendings [pri][w_->pending - 1].events = revents; 2151 pendings [pri][w_->pending - 1].events = revents;
1049 } 2152 }
2153
2154 pendingpri = NUMPRI - 1;
1050} 2155}
1051 2156
1052inline_speed void 2157inline_speed void
1053feed_reverse (EV_P_ W w) 2158feed_reverse (EV_P_ W w)
1054{ 2159{
1055 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2160 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
1056 rfeeds [rfeedcnt++] = w; 2161 rfeeds [rfeedcnt++] = w;
1057} 2162}
1058 2163
1059inline_size void 2164inline_size void
1060feed_reverse_done (EV_P_ int revents) 2165feed_reverse_done (EV_P_ int revents)
… …
1095inline_speed void 2200inline_speed void
1096fd_event (EV_P_ int fd, int revents) 2201fd_event (EV_P_ int fd, int revents)
1097{ 2202{
1098 ANFD *anfd = anfds + fd; 2203 ANFD *anfd = anfds + fd;
1099 2204
1100 if (expect_true (!anfd->reify)) 2205 if (ecb_expect_true (!anfd->reify))
1101 fd_event_nocheck (EV_A_ fd, revents); 2206 fd_event_nocheck (EV_A_ fd, revents);
1102} 2207}
1103 2208
1104void 2209void
1105ev_feed_fd_event (EV_P_ int fd, int revents) 2210ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
1106{ 2211{
1107 if (fd >= 0 && fd < anfdmax) 2212 if (fd >= 0 && fd < anfdmax)
1108 fd_event_nocheck (EV_A_ fd, revents); 2213 fd_event_nocheck (EV_A_ fd, revents);
1109} 2214}
1110 2215
… …
1147 ev_io *w; 2252 ev_io *w;
1148 2253
1149 unsigned char o_events = anfd->events; 2254 unsigned char o_events = anfd->events;
1150 unsigned char o_reify = anfd->reify; 2255 unsigned char o_reify = anfd->reify;
1151 2256
1152 anfd->reify = 0; 2257 anfd->reify = 0;
1153 2258
1154 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 2259 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
1155 { 2260 {
1156 anfd->events = 0; 2261 anfd->events = 0;
1157 2262
1158 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2263 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1159 anfd->events |= (unsigned char)w->events; 2264 anfd->events |= (unsigned char)w->events;
… …
1168 2273
1169 fdchangecnt = 0; 2274 fdchangecnt = 0;
1170} 2275}
1171 2276
1172/* something about the given fd changed */ 2277/* something about the given fd changed */
1173inline_size void 2278inline_size
2279void
1174fd_change (EV_P_ int fd, int flags) 2280fd_change (EV_P_ int fd, int flags)
1175{ 2281{
1176 unsigned char reify = anfds [fd].reify; 2282 unsigned char reify = anfds [fd].reify;
1177 anfds [fd].reify |= flags; 2283 anfds [fd].reify |= flags;
1178 2284
1179 if (expect_true (!reify)) 2285 if (ecb_expect_true (!reify))
1180 { 2286 {
1181 ++fdchangecnt; 2287 ++fdchangecnt;
1182 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2288 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
1183 fdchanges [fdchangecnt - 1] = fd; 2289 fdchanges [fdchangecnt - 1] = fd;
1184 } 2290 }
1185} 2291}
1186 2292
1187/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2293/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1188inline_speed void ecb_cold 2294inline_speed ecb_cold void
1189fd_kill (EV_P_ int fd) 2295fd_kill (EV_P_ int fd)
1190{ 2296{
1191 ev_io *w; 2297 ev_io *w;
1192 2298
1193 while ((w = (ev_io *)anfds [fd].head)) 2299 while ((w = (ev_io *)anfds [fd].head))
… …
1196 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2302 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1197 } 2303 }
1198} 2304}
1199 2305
1200/* check whether the given fd is actually valid, for error recovery */ 2306/* check whether the given fd is actually valid, for error recovery */
1201inline_size int ecb_cold 2307inline_size ecb_cold int
1202fd_valid (int fd) 2308fd_valid (int fd)
1203{ 2309{
1204#ifdef _WIN32 2310#ifdef _WIN32
1205 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2311 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1206#else 2312#else
1207 return fcntl (fd, F_GETFD) != -1; 2313 return fcntl (fd, F_GETFD) != -1;
1208#endif 2314#endif
1209} 2315}
1210 2316
1211/* called on EBADF to verify fds */ 2317/* called on EBADF to verify fds */
1212static void noinline ecb_cold 2318ecb_noinline ecb_cold
2319static void
1213fd_ebadf (EV_P) 2320fd_ebadf (EV_P)
1214{ 2321{
1215 int fd; 2322 int fd;
1216 2323
1217 for (fd = 0; fd < anfdmax; ++fd) 2324 for (fd = 0; fd < anfdmax; ++fd)
… …
1219 if (!fd_valid (fd) && errno == EBADF) 2326 if (!fd_valid (fd) && errno == EBADF)
1220 fd_kill (EV_A_ fd); 2327 fd_kill (EV_A_ fd);
1221} 2328}
1222 2329
1223/* called on ENOMEM in select/poll to kill some fds and retry */ 2330/* called on ENOMEM in select/poll to kill some fds and retry */
1224static void noinline ecb_cold 2331ecb_noinline ecb_cold
2332static void
1225fd_enomem (EV_P) 2333fd_enomem (EV_P)
1226{ 2334{
1227 int fd; 2335 int fd;
1228 2336
1229 for (fd = anfdmax; fd--; ) 2337 for (fd = anfdmax; fd--; )
… …
1233 break; 2341 break;
1234 } 2342 }
1235} 2343}
1236 2344
1237/* usually called after fork if backend needs to re-arm all fds from scratch */ 2345/* usually called after fork if backend needs to re-arm all fds from scratch */
1238static void noinline 2346ecb_noinline
2347static void
1239fd_rearm_all (EV_P) 2348fd_rearm_all (EV_P)
1240{ 2349{
1241 int fd; 2350 int fd;
1242 2351
1243 for (fd = 0; fd < anfdmax; ++fd) 2352 for (fd = 0; fd < anfdmax; ++fd)
… …
1296 ev_tstamp minat; 2405 ev_tstamp minat;
1297 ANHE *minpos; 2406 ANHE *minpos;
1298 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2407 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1299 2408
1300 /* find minimum child */ 2409 /* find minimum child */
1301 if (expect_true (pos + DHEAP - 1 < E)) 2410 if (ecb_expect_true (pos + DHEAP - 1 < E))
1302 { 2411 {
1303 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2412 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1304 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2413 if ( minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1305 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2414 if ( minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1306 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2415 if ( minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1307 } 2416 }
1308 else if (pos < E) 2417 else if (pos < E)
1309 { 2418 {
1310 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2419 /* 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)); 2420 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)); 2421 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)); 2422 if (pos + 3 < E && minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1314 } 2423 }
1315 else 2424 else
1316 break; 2425 break;
1317 2426
1318 if (ANHE_at (he) <= minat) 2427 if (ANHE_at (he) <= minat)
… …
1326 2435
1327 heap [k] = he; 2436 heap [k] = he;
1328 ev_active (ANHE_w (he)) = k; 2437 ev_active (ANHE_w (he)) = k;
1329} 2438}
1330 2439
1331#else /* 4HEAP */ 2440#else /* not 4HEAP */
1332 2441
1333#define HEAP0 1 2442#define HEAP0 1
1334#define HPARENT(k) ((k) >> 1) 2443#define HPARENT(k) ((k) >> 1)
1335#define UPHEAP_DONE(p,k) (!(p)) 2444#define UPHEAP_DONE(p,k) (!(p))
1336 2445
… …
1424 2533
1425/*****************************************************************************/ 2534/*****************************************************************************/
1426 2535
1427#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2536#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1428 2537
1429static void noinline ecb_cold 2538ecb_noinline ecb_cold
2539static void
1430evpipe_init (EV_P) 2540evpipe_init (EV_P)
1431{ 2541{
1432 if (!ev_is_active (&pipe_w)) 2542 if (!ev_is_active (&pipe_w))
1433 { 2543 {
2544 int fds [2];
2545
1434# if EV_USE_EVENTFD 2546# if EV_USE_EVENTFD
2547 fds [0] = -1;
1435 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2548 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1436 if (evfd < 0 && errno == EINVAL) 2549 if (fds [1] < 0 && errno == EINVAL)
1437 evfd = eventfd (0, 0); 2550 fds [1] = eventfd (0, 0);
1438 2551
1439 if (evfd >= 0) 2552 if (fds [1] < 0)
2553# endif
1440 { 2554 {
2555 while (pipe (fds))
2556 ev_syserr ("(libev) error creating signal/async pipe");
2557
2558 fd_intern (fds [0]);
2559 }
2560
1441 evpipe [0] = -1; 2561 evpipe [0] = fds [0];
1442 fd_intern (evfd); /* doing it twice doesn't hurt */ 2562
1443 ev_io_set (&pipe_w, evfd, EV_READ); 2563 if (evpipe [1] < 0)
2564 evpipe [1] = fds [1]; /* first call, set write fd */
2565 else
2566 {
2567 /* on subsequent calls, do not change evpipe [1] */
2568 /* so that evpipe_write can always rely on its value. */
2569 /* this branch does not do anything sensible on windows, */
2570 /* so must not be executed on windows */
2571
2572 dup2 (fds [1], evpipe [1]);
2573 close (fds [1]);
2574 }
2575
2576 fd_intern (evpipe [1]);
2577
2578 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2579 ev_io_start (EV_A_ &pipe_w);
2580 ev_unref (EV_A); /* watcher should not keep loop alive */
2581 }
2582}
2583
2584inline_speed void
2585evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2586{
2587 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2588
2589 if (ecb_expect_true (*flag))
2590 return;
2591
2592 *flag = 1;
2593 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2594
2595 pipe_write_skipped = 1;
2596
2597 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2598
2599 if (pipe_write_wanted)
2600 {
2601 int old_errno;
2602
2603 pipe_write_skipped = 0;
2604 ECB_MEMORY_FENCE_RELEASE;
2605
2606 old_errno = errno; /* save errno because write will clobber it */
2607
2608#if EV_USE_EVENTFD
2609 if (evpipe [0] < 0)
2610 {
2611 uint64_t counter = 1;
2612 write (evpipe [1], &counter, sizeof (uint64_t));
1444 } 2613 }
1445 else 2614 else
1446# endif 2615#endif
1447 { 2616 {
1448 while (pipe (evpipe)) 2617#ifdef _WIN32
1449 ev_syserr ("(libev) error creating signal/async pipe"); 2618 WSABUF buf;
1450 2619 DWORD sent;
1451 fd_intern (evpipe [0]); 2620 buf.buf = (char *)&buf;
1452 fd_intern (evpipe [1]); 2621 buf.len = 1;
1453 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2622 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1454 } 2623#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; /* make sure flag is visible before the wakeup */
1470
1471 pipe_write_skipped = 1;
1472
1473 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1474
1475 if (pipe_write_wanted)
1476 {
1477 int old_errno;
1478
1479 pipe_write_skipped = 0; /* just an optimsiation, no fence needed */
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); 2624 write (evpipe [1], &(evpipe [1]), 1);
2625#endif
1498 } 2626 }
1499 2627
1500 errno = old_errno; 2628 errno = old_errno;
1501 } 2629 }
1502} 2630}
… …
1509 int i; 2637 int i;
1510 2638
1511 if (revents & EV_READ) 2639 if (revents & EV_READ)
1512 { 2640 {
1513#if EV_USE_EVENTFD 2641#if EV_USE_EVENTFD
1514 if (evfd >= 0) 2642 if (evpipe [0] < 0)
1515 { 2643 {
1516 uint64_t counter; 2644 uint64_t counter;
1517 read (evfd, &counter, sizeof (uint64_t)); 2645 read (evpipe [1], &counter, sizeof (uint64_t));
1518 } 2646 }
1519 else 2647 else
1520#endif 2648#endif
1521 { 2649 {
1522 char dummy; 2650 char dummy[4];
1523 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2651#ifdef _WIN32
2652 WSABUF buf;
2653 DWORD recvd;
2654 DWORD flags = 0;
2655 buf.buf = dummy;
2656 buf.len = sizeof (dummy);
2657 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2658#else
1524 read (evpipe [0], &dummy, 1); 2659 read (evpipe [0], &dummy, sizeof (dummy));
2660#endif
1525 } 2661 }
1526 } 2662 }
1527 2663
1528 pipe_write_skipped = 0; 2664 pipe_write_skipped = 0;
2665
2666 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1529 2667
1530#if EV_SIGNAL_ENABLE 2668#if EV_SIGNAL_ENABLE
1531 if (sig_pending) 2669 if (sig_pending)
1532 { 2670 {
1533 sig_pending = 0; 2671 sig_pending = 0;
1534 2672
2673 ECB_MEMORY_FENCE;
2674
1535 for (i = EV_NSIG - 1; i--; ) 2675 for (i = EV_NSIG - 1; i--; )
1536 if (expect_false (signals [i].pending)) 2676 if (ecb_expect_false (signals [i].pending))
1537 ev_feed_signal_event (EV_A_ i + 1); 2677 ev_feed_signal_event (EV_A_ i + 1);
1538 } 2678 }
1539#endif 2679#endif
1540 2680
1541#if EV_ASYNC_ENABLE 2681#if EV_ASYNC_ENABLE
1542 if (async_pending) 2682 if (async_pending)
1543 { 2683 {
1544 async_pending = 0; 2684 async_pending = 0;
2685
2686 ECB_MEMORY_FENCE;
1545 2687
1546 for (i = asynccnt; i--; ) 2688 for (i = asynccnt; i--; )
1547 if (asyncs [i]->sent) 2689 if (asyncs [i]->sent)
1548 { 2690 {
1549 asyncs [i]->sent = 0; 2691 asyncs [i]->sent = 0;
2692 ECB_MEMORY_FENCE_RELEASE;
1550 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2693 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1551 } 2694 }
1552 } 2695 }
1553#endif 2696#endif
1554} 2697}
1555 2698
1556/*****************************************************************************/ 2699/*****************************************************************************/
1557 2700
1558void 2701void
1559ev_feed_signal (int signum) 2702ev_feed_signal (int signum) EV_NOEXCEPT
1560{ 2703{
1561#if EV_MULTIPLICITY 2704#if EV_MULTIPLICITY
2705 EV_P;
2706 ECB_MEMORY_FENCE_ACQUIRE;
1562 EV_P = signals [signum - 1].loop; 2707 EV_A = signals [signum - 1].loop;
1563 2708
1564 if (!EV_A) 2709 if (!EV_A)
1565 return; 2710 return;
1566#endif 2711#endif
1567 2712
1568 if (!ev_active (&pipe_w))
1569 return;
1570
1571 signals [signum - 1].pending = 1; 2713 signals [signum - 1].pending = 1;
1572 evpipe_write (EV_A_ &sig_pending); 2714 evpipe_write (EV_A_ &sig_pending);
1573} 2715}
1574 2716
1575static void 2717static void
… …
1580#endif 2722#endif
1581 2723
1582 ev_feed_signal (signum); 2724 ev_feed_signal (signum);
1583} 2725}
1584 2726
1585void noinline 2727ecb_noinline
2728void
1586ev_feed_signal_event (EV_P_ int signum) 2729ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1587{ 2730{
1588 WL w; 2731 WL w;
1589 2732
1590 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2733 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
1591 return; 2734 return;
1592 2735
1593 --signum; 2736 --signum;
1594 2737
1595#if EV_MULTIPLICITY 2738#if EV_MULTIPLICITY
1596 /* it is permissible to try to feed a signal to the wrong loop */ 2739 /* it is permissible to try to feed a signal to the wrong loop */
1597 /* or, likely more useful, feeding a signal nobody is waiting for */ 2740 /* or, likely more useful, feeding a signal nobody is waiting for */
1598 2741
1599 if (expect_false (signals [signum].loop != EV_A)) 2742 if (ecb_expect_false (signals [signum].loop != EV_A))
1600 return; 2743 return;
1601#endif 2744#endif
1602 2745
1603 signals [signum].pending = 0; 2746 signals [signum].pending = 0;
2747 ECB_MEMORY_FENCE_RELEASE;
1604 2748
1605 for (w = signals [signum].head; w; w = w->next) 2749 for (w = signals [signum].head; w; w = w->next)
1606 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2750 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1607} 2751}
1608 2752
… …
1699# include "ev_kqueue.c" 2843# include "ev_kqueue.c"
1700#endif 2844#endif
1701#if EV_USE_EPOLL 2845#if EV_USE_EPOLL
1702# include "ev_epoll.c" 2846# include "ev_epoll.c"
1703#endif 2847#endif
2848#if EV_USE_LINUXAIO
2849# include "ev_linuxaio.c"
2850#endif
2851#if EV_USE_IOURING
2852# include "ev_iouring.c"
2853#endif
1704#if EV_USE_POLL 2854#if EV_USE_POLL
1705# include "ev_poll.c" 2855# include "ev_poll.c"
1706#endif 2856#endif
1707#if EV_USE_SELECT 2857#if EV_USE_SELECT
1708# include "ev_select.c" 2858# include "ev_select.c"
1709#endif 2859#endif
1710 2860
1711int ecb_cold 2861ecb_cold int
1712ev_version_major (void) 2862ev_version_major (void) EV_NOEXCEPT
1713{ 2863{
1714 return EV_VERSION_MAJOR; 2864 return EV_VERSION_MAJOR;
1715} 2865}
1716 2866
1717int ecb_cold 2867ecb_cold int
1718ev_version_minor (void) 2868ev_version_minor (void) EV_NOEXCEPT
1719{ 2869{
1720 return EV_VERSION_MINOR; 2870 return EV_VERSION_MINOR;
1721} 2871}
1722 2872
1723/* return true if we are running with elevated privileges and should ignore env variables */ 2873/* return true if we are running with elevated privileges and should ignore env variables */
1724int inline_size ecb_cold 2874inline_size ecb_cold int
1725enable_secure (void) 2875enable_secure (void)
1726{ 2876{
1727#ifdef _WIN32 2877#ifdef _WIN32
1728 return 0; 2878 return 0;
1729#else 2879#else
1730 return getuid () != geteuid () 2880 return getuid () != geteuid ()
1731 || getgid () != getegid (); 2881 || getgid () != getegid ();
1732#endif 2882#endif
1733} 2883}
1734 2884
1735unsigned int ecb_cold 2885ecb_cold
2886unsigned int
1736ev_supported_backends (void) 2887ev_supported_backends (void) EV_NOEXCEPT
1737{ 2888{
1738 unsigned int flags = 0; 2889 unsigned int flags = 0;
1739 2890
1740 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2891 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1741 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2892 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
1742 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2893 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2894 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
2895 if (EV_USE_IOURING ) flags |= EVBACKEND_IOURING;
1743 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2896 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1744 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2897 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
1745 2898
1746 return flags; 2899 return flags;
1747} 2900}
1748 2901
1749unsigned int ecb_cold 2902ecb_cold
2903unsigned int
1750ev_recommended_backends (void) 2904ev_recommended_backends (void) EV_NOEXCEPT
1751{ 2905{
1752 unsigned int flags = ev_supported_backends (); 2906 unsigned int flags = ev_supported_backends ();
1753 2907
1754#ifndef __NetBSD__ 2908#ifndef __NetBSD__
1755 /* kqueue is borked on everything but netbsd apparently */ 2909 /* kqueue is borked on everything but netbsd apparently */
… …
1763#endif 2917#endif
1764#ifdef __FreeBSD__ 2918#ifdef __FreeBSD__
1765 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ 2919 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1766#endif 2920#endif
1767 2921
2922 /* TODO: linuxaio is very experimental */
2923#if !EV_RECOMMEND_LINUXAIO
2924 flags &= ~EVBACKEND_LINUXAIO;
2925#endif
2926 /* TODO: linuxaio is super experimental */
2927#if !EV_RECOMMEND_IOURING
2928 flags &= ~EVBACKEND_IOURING;
2929#endif
2930
1768 return flags; 2931 return flags;
1769} 2932}
1770 2933
1771unsigned int ecb_cold 2934ecb_cold
2935unsigned int
1772ev_embeddable_backends (void) 2936ev_embeddable_backends (void) EV_NOEXCEPT
1773{ 2937{
1774 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2938 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1775 2939
1776 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2940 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1777 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 2941 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1778 flags &= ~EVBACKEND_EPOLL; 2942 flags &= ~EVBACKEND_EPOLL;
1779 2943
2944 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
2945
2946 /* EVBACKEND_IOURING is practically embeddable, but the current implementation is not
2947 * because our backend_fd is the epoll fd we need as fallback.
2948 * if the kernel ever is fixed, this might change...
2949 */
2950
1780 return flags; 2951 return flags;
1781} 2952}
1782 2953
1783unsigned int 2954unsigned int
1784ev_backend (EV_P) 2955ev_backend (EV_P) EV_NOEXCEPT
1785{ 2956{
1786 return backend; 2957 return backend;
1787} 2958}
1788 2959
1789#if EV_FEATURE_API 2960#if EV_FEATURE_API
1790unsigned int 2961unsigned int
1791ev_iteration (EV_P) 2962ev_iteration (EV_P) EV_NOEXCEPT
1792{ 2963{
1793 return loop_count; 2964 return loop_count;
1794} 2965}
1795 2966
1796unsigned int 2967unsigned int
1797ev_depth (EV_P) 2968ev_depth (EV_P) EV_NOEXCEPT
1798{ 2969{
1799 return loop_depth; 2970 return loop_depth;
1800} 2971}
1801 2972
1802void 2973void
1803ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2974ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1804{ 2975{
1805 io_blocktime = interval; 2976 io_blocktime = interval;
1806} 2977}
1807 2978
1808void 2979void
1809ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2980ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1810{ 2981{
1811 timeout_blocktime = interval; 2982 timeout_blocktime = interval;
1812} 2983}
1813 2984
1814void 2985void
1815ev_set_userdata (EV_P_ void *data) 2986ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
1816{ 2987{
1817 userdata = data; 2988 userdata = data;
1818} 2989}
1819 2990
1820void * 2991void *
1821ev_userdata (EV_P) 2992ev_userdata (EV_P) EV_NOEXCEPT
1822{ 2993{
1823 return userdata; 2994 return userdata;
1824} 2995}
1825 2996
1826void 2997void
1827ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2998ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
1828{ 2999{
1829 invoke_cb = invoke_pending_cb; 3000 invoke_cb = invoke_pending_cb;
1830} 3001}
1831 3002
1832void 3003void
1833ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 3004ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
1834{ 3005{
1835 release_cb = release; 3006 release_cb = release;
1836 acquire_cb = acquire; 3007 acquire_cb = acquire;
1837} 3008}
1838#endif 3009#endif
1839 3010
1840/* initialise a loop structure, must be zero-initialised */ 3011/* initialise a loop structure, must be zero-initialised */
1841static void noinline ecb_cold 3012ecb_noinline ecb_cold
3013static void
1842loop_init (EV_P_ unsigned int flags) 3014loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
1843{ 3015{
1844 if (!backend) 3016 if (!backend)
1845 { 3017 {
1846 origflags = flags; 3018 origflags = flags;
1847 3019
… …
1892#if EV_ASYNC_ENABLE 3064#if EV_ASYNC_ENABLE
1893 async_pending = 0; 3065 async_pending = 0;
1894#endif 3066#endif
1895 pipe_write_skipped = 0; 3067 pipe_write_skipped = 0;
1896 pipe_write_wanted = 0; 3068 pipe_write_wanted = 0;
3069 evpipe [0] = -1;
3070 evpipe [1] = -1;
1897#if EV_USE_INOTIFY 3071#if EV_USE_INOTIFY
1898 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3072 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1899#endif 3073#endif
1900#if EV_USE_SIGNALFD 3074#if EV_USE_SIGNALFD
1901 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 3075 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
… …
1903 3077
1904 if (!(flags & EVBACKEND_MASK)) 3078 if (!(flags & EVBACKEND_MASK))
1905 flags |= ev_recommended_backends (); 3079 flags |= ev_recommended_backends ();
1906 3080
1907#if EV_USE_IOCP 3081#if EV_USE_IOCP
1908 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 3082 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1909#endif 3083#endif
1910#if EV_USE_PORT 3084#if EV_USE_PORT
1911 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3085 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1912#endif 3086#endif
1913#if EV_USE_KQUEUE 3087#if EV_USE_KQUEUE
1914 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 3088 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
3089#endif
3090#if EV_USE_IOURING
3091 if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
3092#endif
3093#if EV_USE_LINUXAIO
3094 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
1915#endif 3095#endif
1916#if EV_USE_EPOLL 3096#if EV_USE_EPOLL
1917 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3097 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1918#endif 3098#endif
1919#if EV_USE_POLL 3099#if EV_USE_POLL
1920 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3100 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
1921#endif 3101#endif
1922#if EV_USE_SELECT 3102#if EV_USE_SELECT
1923 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3103 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
1924#endif 3104#endif
1925 3105
1926 ev_prepare_init (&pending_w, pendingcb); 3106 ev_prepare_init (&pending_w, pendingcb);
1927 3107
1928#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3108#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
1931#endif 3111#endif
1932 } 3112 }
1933} 3113}
1934 3114
1935/* free up a loop structure */ 3115/* free up a loop structure */
1936void ecb_cold 3116ecb_cold
3117void
1937ev_loop_destroy (EV_P) 3118ev_loop_destroy (EV_P)
1938{ 3119{
1939 int i; 3120 int i;
1940 3121
1941#if EV_MULTIPLICITY 3122#if EV_MULTIPLICITY
… …
1944 return; 3125 return;
1945#endif 3126#endif
1946 3127
1947#if EV_CLEANUP_ENABLE 3128#if EV_CLEANUP_ENABLE
1948 /* queue cleanup watchers (and execute them) */ 3129 /* queue cleanup watchers (and execute them) */
1949 if (expect_false (cleanupcnt)) 3130 if (ecb_expect_false (cleanupcnt))
1950 { 3131 {
1951 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); 3132 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1952 EV_INVOKE_PENDING; 3133 EV_INVOKE_PENDING;
1953 } 3134 }
1954#endif 3135#endif
1955 3136
1956#if EV_CHILD_ENABLE 3137#if EV_CHILD_ENABLE
1957 if (ev_is_active (&childev)) 3138 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
1958 { 3139 {
1959 ev_ref (EV_A); /* child watcher */ 3140 ev_ref (EV_A); /* child watcher */
1960 ev_signal_stop (EV_A_ &childev); 3141 ev_signal_stop (EV_A_ &childev);
1961 } 3142 }
1962#endif 3143#endif
… …
1964 if (ev_is_active (&pipe_w)) 3145 if (ev_is_active (&pipe_w))
1965 { 3146 {
1966 /*ev_ref (EV_A);*/ 3147 /*ev_ref (EV_A);*/
1967 /*ev_io_stop (EV_A_ &pipe_w);*/ 3148 /*ev_io_stop (EV_A_ &pipe_w);*/
1968 3149
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]); 3150 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1977 EV_WIN32_CLOSE_FD (evpipe [1]); 3151 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1978 }
1979 } 3152 }
1980 3153
1981#if EV_USE_SIGNALFD 3154#if EV_USE_SIGNALFD
1982 if (ev_is_active (&sigfd_w)) 3155 if (ev_is_active (&sigfd_w))
1983 close (sigfd); 3156 close (sigfd);
… …
1990 3163
1991 if (backend_fd >= 0) 3164 if (backend_fd >= 0)
1992 close (backend_fd); 3165 close (backend_fd);
1993 3166
1994#if EV_USE_IOCP 3167#if EV_USE_IOCP
1995 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3168 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1996#endif 3169#endif
1997#if EV_USE_PORT 3170#if EV_USE_PORT
1998 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3171 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1999#endif 3172#endif
2000#if EV_USE_KQUEUE 3173#if EV_USE_KQUEUE
2001 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3174 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3175#endif
3176#if EV_USE_IOURING
3177 if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
3178#endif
3179#if EV_USE_LINUXAIO
3180 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
2002#endif 3181#endif
2003#if EV_USE_EPOLL 3182#if EV_USE_EPOLL
2004 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3183 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
2005#endif 3184#endif
2006#if EV_USE_POLL 3185#if EV_USE_POLL
2007 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3186 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
2008#endif 3187#endif
2009#if EV_USE_SELECT 3188#if EV_USE_SELECT
2010 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3189 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
2011#endif 3190#endif
2012 3191
2013 for (i = NUMPRI; i--; ) 3192 for (i = NUMPRI; i--; )
2014 { 3193 {
2015 array_free (pending, [i]); 3194 array_free (pending, [i]);
… …
2057 3236
2058inline_size void 3237inline_size void
2059loop_fork (EV_P) 3238loop_fork (EV_P)
2060{ 3239{
2061#if EV_USE_PORT 3240#if EV_USE_PORT
2062 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3241 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
2063#endif 3242#endif
2064#if EV_USE_KQUEUE 3243#if EV_USE_KQUEUE
2065 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3244 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3245#endif
3246#if EV_USE_IOURING
3247 if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
3248#endif
3249#if EV_USE_LINUXAIO
3250 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
2066#endif 3251#endif
2067#if EV_USE_EPOLL 3252#if EV_USE_EPOLL
2068 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3253 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
2069#endif 3254#endif
2070#if EV_USE_INOTIFY 3255#if EV_USE_INOTIFY
2071 infy_fork (EV_A); 3256 infy_fork (EV_A);
2072#endif 3257#endif
2073 3258
3259#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2074 if (ev_is_active (&pipe_w)) 3260 if (ev_is_active (&pipe_w) && postfork != 2)
2075 { 3261 {
2076 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 3262 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2077 3263
2078 ev_ref (EV_A); 3264 ev_ref (EV_A);
2079 ev_io_stop (EV_A_ &pipe_w); 3265 ev_io_stop (EV_A_ &pipe_w);
2080 3266
2081#if EV_USE_EVENTFD
2082 if (evfd >= 0)
2083 close (evfd);
2084#endif
2085
2086 if (evpipe [0] >= 0) 3267 if (evpipe [0] >= 0)
2087 {
2088 EV_WIN32_CLOSE_FD (evpipe [0]); 3268 EV_WIN32_CLOSE_FD (evpipe [0]);
2089 EV_WIN32_CLOSE_FD (evpipe [1]);
2090 }
2091 3269
2092#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2093 evpipe_init (EV_A); 3270 evpipe_init (EV_A);
2094 /* now iterate over everything, in case we missed something */ 3271 /* iterate over everything, in case we missed something before */
2095 pipecb (EV_A_ &pipe_w, EV_READ); 3272 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2096#endif
2097 } 3273 }
3274#endif
2098 3275
2099 postfork = 0; 3276 postfork = 0;
2100} 3277}
2101 3278
2102#if EV_MULTIPLICITY 3279#if EV_MULTIPLICITY
2103 3280
3281ecb_cold
2104struct ev_loop * ecb_cold 3282struct ev_loop *
2105ev_loop_new (unsigned int flags) 3283ev_loop_new (unsigned int flags) EV_NOEXCEPT
2106{ 3284{
2107 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3285 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2108 3286
2109 memset (EV_A, 0, sizeof (struct ev_loop)); 3287 memset (EV_A, 0, sizeof (struct ev_loop));
2110 loop_init (EV_A_ flags); 3288 loop_init (EV_A_ flags);
… …
2117} 3295}
2118 3296
2119#endif /* multiplicity */ 3297#endif /* multiplicity */
2120 3298
2121#if EV_VERIFY 3299#if EV_VERIFY
2122static void noinline ecb_cold 3300ecb_noinline ecb_cold
3301static void
2123verify_watcher (EV_P_ W w) 3302verify_watcher (EV_P_ W w)
2124{ 3303{
2125 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3304 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2126 3305
2127 if (w->pending) 3306 if (w->pending)
2128 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3307 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2129} 3308}
2130 3309
2131static void noinline ecb_cold 3310ecb_noinline ecb_cold
3311static void
2132verify_heap (EV_P_ ANHE *heap, int N) 3312verify_heap (EV_P_ ANHE *heap, int N)
2133{ 3313{
2134 int i; 3314 int i;
2135 3315
2136 for (i = HEAP0; i < N + HEAP0; ++i) 3316 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2141 3321
2142 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3322 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2143 } 3323 }
2144} 3324}
2145 3325
2146static void noinline ecb_cold 3326ecb_noinline ecb_cold
3327static void
2147array_verify (EV_P_ W *ws, int cnt) 3328array_verify (EV_P_ W *ws, int cnt)
2148{ 3329{
2149 while (cnt--) 3330 while (cnt--)
2150 { 3331 {
2151 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3332 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2154} 3335}
2155#endif 3336#endif
2156 3337
2157#if EV_FEATURE_API 3338#if EV_FEATURE_API
2158void ecb_cold 3339void ecb_cold
2159ev_verify (EV_P) 3340ev_verify (EV_P) EV_NOEXCEPT
2160{ 3341{
2161#if EV_VERIFY 3342#if EV_VERIFY
2162 int i; 3343 int i;
2163 WL w; 3344 WL w, w2;
2164 3345
2165 assert (activecnt >= -1); 3346 assert (activecnt >= -1);
2166 3347
2167 assert (fdchangemax >= fdchangecnt); 3348 assert (fdchangemax >= fdchangecnt);
2168 for (i = 0; i < fdchangecnt; ++i) 3349 for (i = 0; i < fdchangecnt; ++i)
2169 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3350 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2170 3351
2171 assert (anfdmax >= 0); 3352 assert (anfdmax >= 0);
2172 for (i = 0; i < anfdmax; ++i) 3353 for (i = 0; i < anfdmax; ++i)
3354 {
3355 int j = 0;
3356
2173 for (w = anfds [i].head; w; w = w->next) 3357 for (w = w2 = anfds [i].head; w; w = w->next)
2174 { 3358 {
2175 verify_watcher (EV_A_ (W)w); 3359 verify_watcher (EV_A_ (W)w);
3360
3361 if (j++ & 1)
3362 {
3363 assert (("libev: io watcher list contains a loop", w != w2));
3364 w2 = w2->next;
3365 }
3366
2176 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3367 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2177 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3368 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2178 } 3369 }
3370 }
2179 3371
2180 assert (timermax >= timercnt); 3372 assert (timermax >= timercnt);
2181 verify_heap (EV_A_ timers, timercnt); 3373 verify_heap (EV_A_ timers, timercnt);
2182 3374
2183#if EV_PERIODIC_ENABLE 3375#if EV_PERIODIC_ENABLE
… …
2229#endif 3421#endif
2230} 3422}
2231#endif 3423#endif
2232 3424
2233#if EV_MULTIPLICITY 3425#if EV_MULTIPLICITY
3426ecb_cold
2234struct ev_loop * ecb_cold 3427struct ev_loop *
2235#else 3428#else
2236int 3429int
2237#endif 3430#endif
2238ev_default_loop (unsigned int flags) 3431ev_default_loop (unsigned int flags) EV_NOEXCEPT
2239{ 3432{
2240 if (!ev_default_loop_ptr) 3433 if (!ev_default_loop_ptr)
2241 { 3434 {
2242#if EV_MULTIPLICITY 3435#if EV_MULTIPLICITY
2243 EV_P = ev_default_loop_ptr = &default_loop_struct; 3436 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2262 3455
2263 return ev_default_loop_ptr; 3456 return ev_default_loop_ptr;
2264} 3457}
2265 3458
2266void 3459void
2267ev_loop_fork (EV_P) 3460ev_loop_fork (EV_P) EV_NOEXCEPT
2268{ 3461{
2269 postfork = 1; /* must be in line with ev_default_fork */ 3462 postfork = 1;
2270} 3463}
2271 3464
2272/*****************************************************************************/ 3465/*****************************************************************************/
2273 3466
2274void 3467void
… …
2276{ 3469{
2277 EV_CB_INVOKE ((W)w, revents); 3470 EV_CB_INVOKE ((W)w, revents);
2278} 3471}
2279 3472
2280unsigned int 3473unsigned int
2281ev_pending_count (EV_P) 3474ev_pending_count (EV_P) EV_NOEXCEPT
2282{ 3475{
2283 int pri; 3476 int pri;
2284 unsigned int count = 0; 3477 unsigned int count = 0;
2285 3478
2286 for (pri = NUMPRI; pri--; ) 3479 for (pri = NUMPRI; pri--; )
2287 count += pendingcnt [pri]; 3480 count += pendingcnt [pri];
2288 3481
2289 return count; 3482 return count;
2290} 3483}
2291 3484
2292void noinline 3485ecb_noinline
3486void
2293ev_invoke_pending (EV_P) 3487ev_invoke_pending (EV_P)
2294{ 3488{
2295 int pri; 3489 pendingpri = NUMPRI;
2296 3490
2297 for (pri = NUMPRI; pri--; ) 3491 do
3492 {
3493 --pendingpri;
3494
3495 /* pendingpri possibly gets modified in the inner loop */
2298 while (pendingcnt [pri]) 3496 while (pendingcnt [pendingpri])
2299 { 3497 {
2300 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3498 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2301 3499
2302 p->w->pending = 0; 3500 p->w->pending = 0;
2303 EV_CB_INVOKE (p->w, p->events); 3501 EV_CB_INVOKE (p->w, p->events);
2304 EV_FREQUENT_CHECK; 3502 EV_FREQUENT_CHECK;
2305 } 3503 }
3504 }
3505 while (pendingpri);
2306} 3506}
2307 3507
2308#if EV_IDLE_ENABLE 3508#if EV_IDLE_ENABLE
2309/* make idle watchers pending. this handles the "call-idle */ 3509/* make idle watchers pending. this handles the "call-idle */
2310/* only when higher priorities are idle" logic */ 3510/* only when higher priorities are idle" logic */
2311inline_size void 3511inline_size void
2312idle_reify (EV_P) 3512idle_reify (EV_P)
2313{ 3513{
2314 if (expect_false (idleall)) 3514 if (ecb_expect_false (idleall))
2315 { 3515 {
2316 int pri; 3516 int pri;
2317 3517
2318 for (pri = NUMPRI; pri--; ) 3518 for (pri = NUMPRI; pri--; )
2319 { 3519 {
… …
2349 { 3549 {
2350 ev_at (w) += w->repeat; 3550 ev_at (w) += w->repeat;
2351 if (ev_at (w) < mn_now) 3551 if (ev_at (w) < mn_now)
2352 ev_at (w) = mn_now; 3552 ev_at (w) = mn_now;
2353 3553
2354 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 3554 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > EV_TS_CONST (0.)));
2355 3555
2356 ANHE_at_cache (timers [HEAP0]); 3556 ANHE_at_cache (timers [HEAP0]);
2357 downheap (timers, timercnt, HEAP0); 3557 downheap (timers, timercnt, HEAP0);
2358 } 3558 }
2359 else 3559 else
… …
2368 } 3568 }
2369} 3569}
2370 3570
2371#if EV_PERIODIC_ENABLE 3571#if EV_PERIODIC_ENABLE
2372 3572
2373static void noinline 3573ecb_noinline
3574static void
2374periodic_recalc (EV_P_ ev_periodic *w) 3575periodic_recalc (EV_P_ ev_periodic *w)
2375{ 3576{
2376 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3577 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); 3578 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2378 3579
… …
2380 while (at <= ev_rt_now) 3581 while (at <= ev_rt_now)
2381 { 3582 {
2382 ev_tstamp nat = at + w->interval; 3583 ev_tstamp nat = at + w->interval;
2383 3584
2384 /* when resolution fails us, we use ev_rt_now */ 3585 /* when resolution fails us, we use ev_rt_now */
2385 if (expect_false (nat == at)) 3586 if (ecb_expect_false (nat == at))
2386 { 3587 {
2387 at = ev_rt_now; 3588 at = ev_rt_now;
2388 break; 3589 break;
2389 } 3590 }
2390 3591
… …
2400{ 3601{
2401 EV_FREQUENT_CHECK; 3602 EV_FREQUENT_CHECK;
2402 3603
2403 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3604 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2404 { 3605 {
2405 int feed_count = 0;
2406
2407 do 3606 do
2408 { 3607 {
2409 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3608 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2410 3609
2411 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3610 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2438 } 3637 }
2439} 3638}
2440 3639
2441/* simply recalculate all periodics */ 3640/* simply recalculate all periodics */
2442/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3641/* TODO: maybe ensure that at least one event happens when jumping forward? */
2443static void noinline ecb_cold 3642ecb_noinline ecb_cold
3643static void
2444periodics_reschedule (EV_P) 3644periodics_reschedule (EV_P)
2445{ 3645{
2446 int i; 3646 int i;
2447 3647
2448 /* adjust periodics after time jump */ 3648 /* adjust periodics after time jump */
… …
2461 reheap (periodics, periodiccnt); 3661 reheap (periodics, periodiccnt);
2462} 3662}
2463#endif 3663#endif
2464 3664
2465/* adjust all timers by a given offset */ 3665/* adjust all timers by a given offset */
2466static void noinline ecb_cold 3666ecb_noinline ecb_cold
3667static void
2467timers_reschedule (EV_P_ ev_tstamp adjust) 3668timers_reschedule (EV_P_ ev_tstamp adjust)
2468{ 3669{
2469 int i; 3670 int i;
2470 3671
2471 for (i = 0; i < timercnt; ++i) 3672 for (i = 0; i < timercnt; ++i)
… …
2480/* also detect if there was a timejump, and act accordingly */ 3681/* also detect if there was a timejump, and act accordingly */
2481inline_speed void 3682inline_speed void
2482time_update (EV_P_ ev_tstamp max_block) 3683time_update (EV_P_ ev_tstamp max_block)
2483{ 3684{
2484#if EV_USE_MONOTONIC 3685#if EV_USE_MONOTONIC
2485 if (expect_true (have_monotonic)) 3686 if (ecb_expect_true (have_monotonic))
2486 { 3687 {
2487 int i; 3688 int i;
2488 ev_tstamp odiff = rtmn_diff; 3689 ev_tstamp odiff = rtmn_diff;
2489 3690
2490 mn_now = get_clock (); 3691 mn_now = get_clock ();
2491 3692
2492 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3693 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2493 /* interpolate in the meantime */ 3694 /* interpolate in the meantime */
2494 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3695 if (ecb_expect_true (mn_now - now_floor < EV_TS_CONST (MIN_TIMEJUMP * .5)))
2495 { 3696 {
2496 ev_rt_now = rtmn_diff + mn_now; 3697 ev_rt_now = rtmn_diff + mn_now;
2497 return; 3698 return;
2498 } 3699 }
2499 3700
… …
2513 ev_tstamp diff; 3714 ev_tstamp diff;
2514 rtmn_diff = ev_rt_now - mn_now; 3715 rtmn_diff = ev_rt_now - mn_now;
2515 3716
2516 diff = odiff - rtmn_diff; 3717 diff = odiff - rtmn_diff;
2517 3718
2518 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP)) 3719 if (ecb_expect_true ((diff < EV_TS_CONST (0.) ? -diff : diff) < EV_TS_CONST (MIN_TIMEJUMP)))
2519 return; /* all is well */ 3720 return; /* all is well */
2520 3721
2521 ev_rt_now = ev_time (); 3722 ev_rt_now = ev_time ();
2522 mn_now = get_clock (); 3723 mn_now = get_clock ();
2523 now_floor = mn_now; 3724 now_floor = mn_now;
… …
2532 else 3733 else
2533#endif 3734#endif
2534 { 3735 {
2535 ev_rt_now = ev_time (); 3736 ev_rt_now = ev_time ();
2536 3737
2537 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 3738 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + EV_TS_CONST (MIN_TIMEJUMP)))
2538 { 3739 {
2539 /* adjust timers. this is easy, as the offset is the same for all of them */ 3740 /* adjust timers. this is easy, as the offset is the same for all of them */
2540 timers_reschedule (EV_A_ ev_rt_now - mn_now); 3741 timers_reschedule (EV_A_ ev_rt_now - mn_now);
2541#if EV_PERIODIC_ENABLE 3742#if EV_PERIODIC_ENABLE
2542 periodics_reschedule (EV_A); 3743 periodics_reschedule (EV_A);
… …
2545 3746
2546 mn_now = ev_rt_now; 3747 mn_now = ev_rt_now;
2547 } 3748 }
2548} 3749}
2549 3750
2550void 3751int
2551ev_run (EV_P_ int flags) 3752ev_run (EV_P_ int flags)
2552{ 3753{
2553#if EV_FEATURE_API 3754#if EV_FEATURE_API
2554 ++loop_depth; 3755 ++loop_depth;
2555#endif 3756#endif
… …
2565#if EV_VERIFY >= 2 3766#if EV_VERIFY >= 2
2566 ev_verify (EV_A); 3767 ev_verify (EV_A);
2567#endif 3768#endif
2568 3769
2569#ifndef _WIN32 3770#ifndef _WIN32
2570 if (expect_false (curpid)) /* penalise the forking check even more */ 3771 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
2571 if (expect_false (getpid () != curpid)) 3772 if (ecb_expect_false (getpid () != curpid))
2572 { 3773 {
2573 curpid = getpid (); 3774 curpid = getpid ();
2574 postfork = 1; 3775 postfork = 1;
2575 } 3776 }
2576#endif 3777#endif
2577 3778
2578#if EV_FORK_ENABLE 3779#if EV_FORK_ENABLE
2579 /* we might have forked, so queue fork handlers */ 3780 /* we might have forked, so queue fork handlers */
2580 if (expect_false (postfork)) 3781 if (ecb_expect_false (postfork))
2581 if (forkcnt) 3782 if (forkcnt)
2582 { 3783 {
2583 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3784 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2584 EV_INVOKE_PENDING; 3785 EV_INVOKE_PENDING;
2585 } 3786 }
2586#endif 3787#endif
2587 3788
2588#if EV_PREPARE_ENABLE 3789#if EV_PREPARE_ENABLE
2589 /* queue prepare watchers (and execute them) */ 3790 /* queue prepare watchers (and execute them) */
2590 if (expect_false (preparecnt)) 3791 if (ecb_expect_false (preparecnt))
2591 { 3792 {
2592 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3793 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2593 EV_INVOKE_PENDING; 3794 EV_INVOKE_PENDING;
2594 } 3795 }
2595#endif 3796#endif
2596 3797
2597 if (expect_false (loop_done)) 3798 if (ecb_expect_false (loop_done))
2598 break; 3799 break;
2599 3800
2600 /* we might have forked, so reify kernel state if necessary */ 3801 /* we might have forked, so reify kernel state if necessary */
2601 if (expect_false (postfork)) 3802 if (ecb_expect_false (postfork))
2602 loop_fork (EV_A); 3803 loop_fork (EV_A);
2603 3804
2604 /* update fd-related kernel structures */ 3805 /* update fd-related kernel structures */
2605 fd_reify (EV_A); 3806 fd_reify (EV_A);
2606 3807
… …
2611 3812
2612 /* remember old timestamp for io_blocktime calculation */ 3813 /* remember old timestamp for io_blocktime calculation */
2613 ev_tstamp prev_mn_now = mn_now; 3814 ev_tstamp prev_mn_now = mn_now;
2614 3815
2615 /* update time to cancel out callback processing overhead */ 3816 /* update time to cancel out callback processing overhead */
2616 time_update (EV_A_ 1e100); 3817 time_update (EV_A_ EV_TS_CONST (EV_TSTAMP_HUGE));
2617 3818
2618 /* from now on, we want a pipe-wake-up */ 3819 /* from now on, we want a pipe-wake-up */
2619 pipe_write_wanted = 1; 3820 pipe_write_wanted = 1;
2620 3821
2621 ECB_MEMORY_FENCE; /* amke sure pipe_write_wanted is visible before we check for potential skips */ 3822 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
2622 3823
2623 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) 3824 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2624 { 3825 {
2625 waittime = MAX_BLOCKTIME; 3826 waittime = EV_TS_CONST (MAX_BLOCKTIME);
2626 3827
2627 if (timercnt) 3828 if (timercnt)
2628 { 3829 {
2629 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now; 3830 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2630 if (waittime > to) waittime = to; 3831 if (waittime > to) waittime = to;
… …
2637 if (waittime > to) waittime = to; 3838 if (waittime > to) waittime = to;
2638 } 3839 }
2639#endif 3840#endif
2640 3841
2641 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3842 /* don't let timeouts decrease the waittime below timeout_blocktime */
2642 if (expect_false (waittime < timeout_blocktime)) 3843 if (ecb_expect_false (waittime < timeout_blocktime))
2643 waittime = timeout_blocktime; 3844 waittime = timeout_blocktime;
2644 3845
2645 /* at this point, we NEED to wait, so we have to ensure */ 3846 /* at this point, we NEED to wait, so we have to ensure */
2646 /* to pass a minimum nonzero value to the backend */ 3847 /* to pass a minimum nonzero value to the backend */
2647 if (expect_false (waittime < backend_mintime)) 3848 if (ecb_expect_false (waittime < backend_mintime))
2648 waittime = backend_mintime; 3849 waittime = backend_mintime;
2649 3850
2650 /* extra check because io_blocktime is commonly 0 */ 3851 /* extra check because io_blocktime is commonly 0 */
2651 if (expect_false (io_blocktime)) 3852 if (ecb_expect_false (io_blocktime))
2652 { 3853 {
2653 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3854 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2654 3855
2655 if (sleeptime > waittime - backend_mintime) 3856 if (sleeptime > waittime - backend_mintime)
2656 sleeptime = waittime - backend_mintime; 3857 sleeptime = waittime - backend_mintime;
2657 3858
2658 if (expect_true (sleeptime > 0.)) 3859 if (ecb_expect_true (sleeptime > EV_TS_CONST (0.)))
2659 { 3860 {
2660 ev_sleep (sleeptime); 3861 ev_sleep (sleeptime);
2661 waittime -= sleeptime; 3862 waittime -= sleeptime;
2662 } 3863 }
2663 } 3864 }
… …
2668#endif 3869#endif
2669 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ 3870 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2670 backend_poll (EV_A_ waittime); 3871 backend_poll (EV_A_ waittime);
2671 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3872 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2672 3873
2673 pipe_write_wanted = 0; /* just an optimsiation, no fence needed */ 3874 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
2674 3875
3876 ECB_MEMORY_FENCE_ACQUIRE;
2675 if (pipe_write_skipped) 3877 if (pipe_write_skipped)
2676 { 3878 {
2677 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 3879 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); 3880 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2679 } 3881 }
2680 3882
2681
2682 /* update ev_rt_now, do magic */ 3883 /* update ev_rt_now, do magic */
2683 time_update (EV_A_ waittime + sleeptime); 3884 time_update (EV_A_ waittime + sleeptime);
2684 } 3885 }
2685 3886
2686 /* queue pending timers and reschedule them */ 3887 /* queue pending timers and reschedule them */
… …
2694 idle_reify (EV_A); 3895 idle_reify (EV_A);
2695#endif 3896#endif
2696 3897
2697#if EV_CHECK_ENABLE 3898#if EV_CHECK_ENABLE
2698 /* queue check watchers, to be executed first */ 3899 /* queue check watchers, to be executed first */
2699 if (expect_false (checkcnt)) 3900 if (ecb_expect_false (checkcnt))
2700 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3901 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2701#endif 3902#endif
2702 3903
2703 EV_INVOKE_PENDING; 3904 EV_INVOKE_PENDING;
2704 } 3905 }
2705 while (expect_true ( 3906 while (ecb_expect_true (
2706 activecnt 3907 activecnt
2707 && !loop_done 3908 && !loop_done
2708 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) 3909 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2709 )); 3910 ));
2710 3911
… …
2712 loop_done = EVBREAK_CANCEL; 3913 loop_done = EVBREAK_CANCEL;
2713 3914
2714#if EV_FEATURE_API 3915#if EV_FEATURE_API
2715 --loop_depth; 3916 --loop_depth;
2716#endif 3917#endif
2717}
2718 3918
3919 return activecnt;
3920}
3921
2719void 3922void
2720ev_break (EV_P_ int how) 3923ev_break (EV_P_ int how) EV_NOEXCEPT
2721{ 3924{
2722 loop_done = how; 3925 loop_done = how;
2723} 3926}
2724 3927
2725void 3928void
2726ev_ref (EV_P) 3929ev_ref (EV_P) EV_NOEXCEPT
2727{ 3930{
2728 ++activecnt; 3931 ++activecnt;
2729} 3932}
2730 3933
2731void 3934void
2732ev_unref (EV_P) 3935ev_unref (EV_P) EV_NOEXCEPT
2733{ 3936{
2734 --activecnt; 3937 --activecnt;
2735} 3938}
2736 3939
2737void 3940void
2738ev_now_update (EV_P) 3941ev_now_update (EV_P) EV_NOEXCEPT
2739{ 3942{
2740 time_update (EV_A_ 1e100); 3943 time_update (EV_A_ EV_TSTAMP_HUGE);
2741} 3944}
2742 3945
2743void 3946void
2744ev_suspend (EV_P) 3947ev_suspend (EV_P) EV_NOEXCEPT
2745{ 3948{
2746 ev_now_update (EV_A); 3949 ev_now_update (EV_A);
2747} 3950}
2748 3951
2749void 3952void
2750ev_resume (EV_P) 3953ev_resume (EV_P) EV_NOEXCEPT
2751{ 3954{
2752 ev_tstamp mn_prev = mn_now; 3955 ev_tstamp mn_prev = mn_now;
2753 3956
2754 ev_now_update (EV_A); 3957 ev_now_update (EV_A);
2755 timers_reschedule (EV_A_ mn_now - mn_prev); 3958 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2772inline_size void 3975inline_size void
2773wlist_del (WL *head, WL elem) 3976wlist_del (WL *head, WL elem)
2774{ 3977{
2775 while (*head) 3978 while (*head)
2776 { 3979 {
2777 if (expect_true (*head == elem)) 3980 if (ecb_expect_true (*head == elem))
2778 { 3981 {
2779 *head = elem->next; 3982 *head = elem->next;
2780 break; 3983 break;
2781 } 3984 }
2782 3985
… …
2794 w->pending = 0; 3997 w->pending = 0;
2795 } 3998 }
2796} 3999}
2797 4000
2798int 4001int
2799ev_clear_pending (EV_P_ void *w) 4002ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
2800{ 4003{
2801 W w_ = (W)w; 4004 W w_ = (W)w;
2802 int pending = w_->pending; 4005 int pending = w_->pending;
2803 4006
2804 if (expect_true (pending)) 4007 if (ecb_expect_true (pending))
2805 { 4008 {
2806 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4009 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2807 p->w = (W)&pending_w; 4010 p->w = (W)&pending_w;
2808 w_->pending = 0; 4011 w_->pending = 0;
2809 return p->events; 4012 return p->events;
… …
2836 w->active = 0; 4039 w->active = 0;
2837} 4040}
2838 4041
2839/*****************************************************************************/ 4042/*****************************************************************************/
2840 4043
2841void noinline 4044ecb_noinline
4045void
2842ev_io_start (EV_P_ ev_io *w) 4046ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
2843{ 4047{
2844 int fd = w->fd; 4048 int fd = w->fd;
2845 4049
2846 if (expect_false (ev_is_active (w))) 4050 if (ecb_expect_false (ev_is_active (w)))
2847 return; 4051 return;
2848 4052
2849 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4053 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)))); 4054 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2851 4055
4056#if EV_VERIFY >= 2
4057 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4058#endif
2852 EV_FREQUENT_CHECK; 4059 EV_FREQUENT_CHECK;
2853 4060
2854 ev_start (EV_A_ (W)w, 1); 4061 ev_start (EV_A_ (W)w, 1);
2855 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4062 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
2856 wlist_add (&anfds[fd].head, (WL)w); 4063 wlist_add (&anfds[fd].head, (WL)w);
4064
4065 /* common bug, apparently */
4066 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
2857 4067
2858 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 4068 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2859 w->events &= ~EV__IOFDSET; 4069 w->events &= ~EV__IOFDSET;
2860 4070
2861 EV_FREQUENT_CHECK; 4071 EV_FREQUENT_CHECK;
2862} 4072}
2863 4073
2864void noinline 4074ecb_noinline
4075void
2865ev_io_stop (EV_P_ ev_io *w) 4076ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
2866{ 4077{
2867 clear_pending (EV_A_ (W)w); 4078 clear_pending (EV_A_ (W)w);
2868 if (expect_false (!ev_is_active (w))) 4079 if (ecb_expect_false (!ev_is_active (w)))
2869 return; 4080 return;
2870 4081
2871 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4082 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2872 4083
4084#if EV_VERIFY >= 2
4085 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4086#endif
2873 EV_FREQUENT_CHECK; 4087 EV_FREQUENT_CHECK;
2874 4088
2875 wlist_del (&anfds[w->fd].head, (WL)w); 4089 wlist_del (&anfds[w->fd].head, (WL)w);
2876 ev_stop (EV_A_ (W)w); 4090 ev_stop (EV_A_ (W)w);
2877 4091
2878 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 4092 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2879 4093
2880 EV_FREQUENT_CHECK; 4094 EV_FREQUENT_CHECK;
2881} 4095}
2882 4096
2883void noinline 4097ecb_noinline
4098void
2884ev_timer_start (EV_P_ ev_timer *w) 4099ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
2885{ 4100{
2886 if (expect_false (ev_is_active (w))) 4101 if (ecb_expect_false (ev_is_active (w)))
2887 return; 4102 return;
2888 4103
2889 ev_at (w) += mn_now; 4104 ev_at (w) += mn_now;
2890 4105
2891 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4106 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2892 4107
2893 EV_FREQUENT_CHECK; 4108 EV_FREQUENT_CHECK;
2894 4109
2895 ++timercnt; 4110 ++timercnt;
2896 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4111 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2897 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4112 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
2898 ANHE_w (timers [ev_active (w)]) = (WT)w; 4113 ANHE_w (timers [ev_active (w)]) = (WT)w;
2899 ANHE_at_cache (timers [ev_active (w)]); 4114 ANHE_at_cache (timers [ev_active (w)]);
2900 upheap (timers, ev_active (w)); 4115 upheap (timers, ev_active (w));
2901 4116
2902 EV_FREQUENT_CHECK; 4117 EV_FREQUENT_CHECK;
2903 4118
2904 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4119 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2905} 4120}
2906 4121
2907void noinline 4122ecb_noinline
4123void
2908ev_timer_stop (EV_P_ ev_timer *w) 4124ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
2909{ 4125{
2910 clear_pending (EV_A_ (W)w); 4126 clear_pending (EV_A_ (W)w);
2911 if (expect_false (!ev_is_active (w))) 4127 if (ecb_expect_false (!ev_is_active (w)))
2912 return; 4128 return;
2913 4129
2914 EV_FREQUENT_CHECK; 4130 EV_FREQUENT_CHECK;
2915 4131
2916 { 4132 {
… …
2918 4134
2919 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4135 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2920 4136
2921 --timercnt; 4137 --timercnt;
2922 4138
2923 if (expect_true (active < timercnt + HEAP0)) 4139 if (ecb_expect_true (active < timercnt + HEAP0))
2924 { 4140 {
2925 timers [active] = timers [timercnt + HEAP0]; 4141 timers [active] = timers [timercnt + HEAP0];
2926 adjustheap (timers, timercnt, active); 4142 adjustheap (timers, timercnt, active);
2927 } 4143 }
2928 } 4144 }
… …
2932 ev_stop (EV_A_ (W)w); 4148 ev_stop (EV_A_ (W)w);
2933 4149
2934 EV_FREQUENT_CHECK; 4150 EV_FREQUENT_CHECK;
2935} 4151}
2936 4152
2937void noinline 4153ecb_noinline
4154void
2938ev_timer_again (EV_P_ ev_timer *w) 4155ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
2939{ 4156{
2940 EV_FREQUENT_CHECK; 4157 EV_FREQUENT_CHECK;
4158
4159 clear_pending (EV_A_ (W)w);
2941 4160
2942 if (ev_is_active (w)) 4161 if (ev_is_active (w))
2943 { 4162 {
2944 if (w->repeat) 4163 if (w->repeat)
2945 { 4164 {
… …
2958 4177
2959 EV_FREQUENT_CHECK; 4178 EV_FREQUENT_CHECK;
2960} 4179}
2961 4180
2962ev_tstamp 4181ev_tstamp
2963ev_timer_remaining (EV_P_ ev_timer *w) 4182ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
2964{ 4183{
2965 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4184 return ev_at (w) - (ev_is_active (w) ? mn_now : EV_TS_CONST (0.));
2966} 4185}
2967 4186
2968#if EV_PERIODIC_ENABLE 4187#if EV_PERIODIC_ENABLE
2969void noinline 4188ecb_noinline
4189void
2970ev_periodic_start (EV_P_ ev_periodic *w) 4190ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
2971{ 4191{
2972 if (expect_false (ev_is_active (w))) 4192 if (ecb_expect_false (ev_is_active (w)))
2973 return; 4193 return;
2974 4194
2975 if (w->reschedule_cb) 4195 if (w->reschedule_cb)
2976 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4196 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2977 else if (w->interval) 4197 else if (w->interval)
… …
2984 4204
2985 EV_FREQUENT_CHECK; 4205 EV_FREQUENT_CHECK;
2986 4206
2987 ++periodiccnt; 4207 ++periodiccnt;
2988 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4208 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2989 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4209 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
2990 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4210 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2991 ANHE_at_cache (periodics [ev_active (w)]); 4211 ANHE_at_cache (periodics [ev_active (w)]);
2992 upheap (periodics, ev_active (w)); 4212 upheap (periodics, ev_active (w));
2993 4213
2994 EV_FREQUENT_CHECK; 4214 EV_FREQUENT_CHECK;
2995 4215
2996 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4216 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2997} 4217}
2998 4218
2999void noinline 4219ecb_noinline
4220void
3000ev_periodic_stop (EV_P_ ev_periodic *w) 4221ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
3001{ 4222{
3002 clear_pending (EV_A_ (W)w); 4223 clear_pending (EV_A_ (W)w);
3003 if (expect_false (!ev_is_active (w))) 4224 if (ecb_expect_false (!ev_is_active (w)))
3004 return; 4225 return;
3005 4226
3006 EV_FREQUENT_CHECK; 4227 EV_FREQUENT_CHECK;
3007 4228
3008 { 4229 {
… …
3010 4231
3011 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4232 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
3012 4233
3013 --periodiccnt; 4234 --periodiccnt;
3014 4235
3015 if (expect_true (active < periodiccnt + HEAP0)) 4236 if (ecb_expect_true (active < periodiccnt + HEAP0))
3016 { 4237 {
3017 periodics [active] = periodics [periodiccnt + HEAP0]; 4238 periodics [active] = periodics [periodiccnt + HEAP0];
3018 adjustheap (periodics, periodiccnt, active); 4239 adjustheap (periodics, periodiccnt, active);
3019 } 4240 }
3020 } 4241 }
… …
3022 ev_stop (EV_A_ (W)w); 4243 ev_stop (EV_A_ (W)w);
3023 4244
3024 EV_FREQUENT_CHECK; 4245 EV_FREQUENT_CHECK;
3025} 4246}
3026 4247
3027void noinline 4248ecb_noinline
4249void
3028ev_periodic_again (EV_P_ ev_periodic *w) 4250ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
3029{ 4251{
3030 /* TODO: use adjustheap and recalculation */ 4252 /* TODO: use adjustheap and recalculation */
3031 ev_periodic_stop (EV_A_ w); 4253 ev_periodic_stop (EV_A_ w);
3032 ev_periodic_start (EV_A_ w); 4254 ev_periodic_start (EV_A_ w);
3033} 4255}
… …
3037# define SA_RESTART 0 4259# define SA_RESTART 0
3038#endif 4260#endif
3039 4261
3040#if EV_SIGNAL_ENABLE 4262#if EV_SIGNAL_ENABLE
3041 4263
3042void noinline 4264ecb_noinline
4265void
3043ev_signal_start (EV_P_ ev_signal *w) 4266ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
3044{ 4267{
3045 if (expect_false (ev_is_active (w))) 4268 if (ecb_expect_false (ev_is_active (w)))
3046 return; 4269 return;
3047 4270
3048 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4271 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
3049 4272
3050#if EV_MULTIPLICITY 4273#if EV_MULTIPLICITY
3051 assert (("libev: a signal must not be attached to two different loops", 4274 assert (("libev: a signal must not be attached to two different loops",
3052 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4275 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3053 4276
3054 signals [w->signum - 1].loop = EV_A; 4277 signals [w->signum - 1].loop = EV_A;
4278 ECB_MEMORY_FENCE_RELEASE;
3055#endif 4279#endif
3056 4280
3057 EV_FREQUENT_CHECK; 4281 EV_FREQUENT_CHECK;
3058 4282
3059#if EV_USE_SIGNALFD 4283#if EV_USE_SIGNALFD
… …
3118 } 4342 }
3119 4343
3120 EV_FREQUENT_CHECK; 4344 EV_FREQUENT_CHECK;
3121} 4345}
3122 4346
3123void noinline 4347ecb_noinline
4348void
3124ev_signal_stop (EV_P_ ev_signal *w) 4349ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
3125{ 4350{
3126 clear_pending (EV_A_ (W)w); 4351 clear_pending (EV_A_ (W)w);
3127 if (expect_false (!ev_is_active (w))) 4352 if (ecb_expect_false (!ev_is_active (w)))
3128 return; 4353 return;
3129 4354
3130 EV_FREQUENT_CHECK; 4355 EV_FREQUENT_CHECK;
3131 4356
3132 wlist_del (&signals [w->signum - 1].head, (WL)w); 4357 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
3160#endif 4385#endif
3161 4386
3162#if EV_CHILD_ENABLE 4387#if EV_CHILD_ENABLE
3163 4388
3164void 4389void
3165ev_child_start (EV_P_ ev_child *w) 4390ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
3166{ 4391{
3167#if EV_MULTIPLICITY 4392#if EV_MULTIPLICITY
3168 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4393 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3169#endif 4394#endif
3170 if (expect_false (ev_is_active (w))) 4395 if (ecb_expect_false (ev_is_active (w)))
3171 return; 4396 return;
3172 4397
3173 EV_FREQUENT_CHECK; 4398 EV_FREQUENT_CHECK;
3174 4399
3175 ev_start (EV_A_ (W)w, 1); 4400 ev_start (EV_A_ (W)w, 1);
… …
3177 4402
3178 EV_FREQUENT_CHECK; 4403 EV_FREQUENT_CHECK;
3179} 4404}
3180 4405
3181void 4406void
3182ev_child_stop (EV_P_ ev_child *w) 4407ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
3183{ 4408{
3184 clear_pending (EV_A_ (W)w); 4409 clear_pending (EV_A_ (W)w);
3185 if (expect_false (!ev_is_active (w))) 4410 if (ecb_expect_false (!ev_is_active (w)))
3186 return; 4411 return;
3187 4412
3188 EV_FREQUENT_CHECK; 4413 EV_FREQUENT_CHECK;
3189 4414
3190 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); 4415 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
… …
3204 4429
3205#define DEF_STAT_INTERVAL 5.0074891 4430#define DEF_STAT_INTERVAL 5.0074891
3206#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4431#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3207#define MIN_STAT_INTERVAL 0.1074891 4432#define MIN_STAT_INTERVAL 0.1074891
3208 4433
3209static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4434ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
3210 4435
3211#if EV_USE_INOTIFY 4436#if EV_USE_INOTIFY
3212 4437
3213/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4438/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3214# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4439# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3215 4440
3216static void noinline 4441ecb_noinline
4442static void
3217infy_add (EV_P_ ev_stat *w) 4443infy_add (EV_P_ ev_stat *w)
3218{ 4444{
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); 4445 w->wd = inotify_add_watch (fs_fd, w->path,
4446 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4447 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4448 | IN_DONT_FOLLOW | IN_MASK_ADD);
3220 4449
3221 if (w->wd >= 0) 4450 if (w->wd >= 0)
3222 { 4451 {
3223 struct statfs sfs; 4452 struct statfs sfs;
3224 4453
… …
3228 4457
3229 if (!fs_2625) 4458 if (!fs_2625)
3230 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4459 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3231 else if (!statfs (w->path, &sfs) 4460 else if (!statfs (w->path, &sfs)
3232 && (sfs.f_type == 0x1373 /* devfs */ 4461 && (sfs.f_type == 0x1373 /* devfs */
4462 || sfs.f_type == 0x4006 /* fat */
4463 || sfs.f_type == 0x4d44 /* msdos */
3233 || sfs.f_type == 0xEF53 /* ext2/3 */ 4464 || sfs.f_type == 0xEF53 /* ext2/3 */
4465 || sfs.f_type == 0x72b6 /* jffs2 */
4466 || sfs.f_type == 0x858458f6 /* ramfs */
4467 || sfs.f_type == 0x5346544e /* ntfs */
3234 || sfs.f_type == 0x3153464a /* jfs */ 4468 || sfs.f_type == 0x3153464a /* jfs */
4469 || sfs.f_type == 0x9123683e /* btrfs */
3235 || sfs.f_type == 0x52654973 /* reiser3 */ 4470 || sfs.f_type == 0x52654973 /* reiser3 */
3236 || sfs.f_type == 0x01021994 /* tempfs */ 4471 || sfs.f_type == 0x01021994 /* tmpfs */
3237 || sfs.f_type == 0x58465342 /* xfs */)) 4472 || sfs.f_type == 0x58465342 /* xfs */))
3238 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4473 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3239 else 4474 else
3240 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4475 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3241 } 4476 }
… …
3276 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4511 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3277 ev_timer_again (EV_A_ &w->timer); 4512 ev_timer_again (EV_A_ &w->timer);
3278 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4513 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3279} 4514}
3280 4515
3281static void noinline 4516ecb_noinline
4517static void
3282infy_del (EV_P_ ev_stat *w) 4518infy_del (EV_P_ ev_stat *w)
3283{ 4519{
3284 int slot; 4520 int slot;
3285 int wd = w->wd; 4521 int wd = w->wd;
3286 4522
… …
3293 4529
3294 /* remove this watcher, if others are watching it, they will rearm */ 4530 /* remove this watcher, if others are watching it, they will rearm */
3295 inotify_rm_watch (fs_fd, wd); 4531 inotify_rm_watch (fs_fd, wd);
3296} 4532}
3297 4533
3298static void noinline 4534ecb_noinline
4535static void
3299infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4536infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3300{ 4537{
3301 if (slot < 0) 4538 if (slot < 0)
3302 /* overflow, need to check for all hash slots */ 4539 /* overflow, need to check for all hash slots */
3303 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4540 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3339 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4576 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3340 ofs += sizeof (struct inotify_event) + ev->len; 4577 ofs += sizeof (struct inotify_event) + ev->len;
3341 } 4578 }
3342} 4579}
3343 4580
3344inline_size void ecb_cold 4581inline_size ecb_cold
4582void
3345ev_check_2625 (EV_P) 4583ev_check_2625 (EV_P)
3346{ 4584{
3347 /* kernels < 2.6.25 are borked 4585 /* kernels < 2.6.25 are borked
3348 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4586 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3349 */ 4587 */
… …
3354} 4592}
3355 4593
3356inline_size int 4594inline_size int
3357infy_newfd (void) 4595infy_newfd (void)
3358{ 4596{
3359#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4597#if defined IN_CLOEXEC && defined IN_NONBLOCK
3360 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4598 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3361 if (fd >= 0) 4599 if (fd >= 0)
3362 return fd; 4600 return fd;
3363#endif 4601#endif
3364 return inotify_init (); 4602 return inotify_init ();
… …
3439#else 4677#else
3440# define EV_LSTAT(p,b) lstat (p, b) 4678# define EV_LSTAT(p,b) lstat (p, b)
3441#endif 4679#endif
3442 4680
3443void 4681void
3444ev_stat_stat (EV_P_ ev_stat *w) 4682ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3445{ 4683{
3446 if (lstat (w->path, &w->attr) < 0) 4684 if (lstat (w->path, &w->attr) < 0)
3447 w->attr.st_nlink = 0; 4685 w->attr.st_nlink = 0;
3448 else if (!w->attr.st_nlink) 4686 else if (!w->attr.st_nlink)
3449 w->attr.st_nlink = 1; 4687 w->attr.st_nlink = 1;
3450} 4688}
3451 4689
3452static void noinline 4690ecb_noinline
4691static void
3453stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4692stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3454{ 4693{
3455 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4694 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3456 4695
3457 ev_statdata prev = w->attr; 4696 ev_statdata prev = w->attr;
… …
3488 ev_feed_event (EV_A_ w, EV_STAT); 4727 ev_feed_event (EV_A_ w, EV_STAT);
3489 } 4728 }
3490} 4729}
3491 4730
3492void 4731void
3493ev_stat_start (EV_P_ ev_stat *w) 4732ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3494{ 4733{
3495 if (expect_false (ev_is_active (w))) 4734 if (ecb_expect_false (ev_is_active (w)))
3496 return; 4735 return;
3497 4736
3498 ev_stat_stat (EV_A_ w); 4737 ev_stat_stat (EV_A_ w);
3499 4738
3500 if (w->interval < MIN_STAT_INTERVAL && w->interval) 4739 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
3519 4758
3520 EV_FREQUENT_CHECK; 4759 EV_FREQUENT_CHECK;
3521} 4760}
3522 4761
3523void 4762void
3524ev_stat_stop (EV_P_ ev_stat *w) 4763ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3525{ 4764{
3526 clear_pending (EV_A_ (W)w); 4765 clear_pending (EV_A_ (W)w);
3527 if (expect_false (!ev_is_active (w))) 4766 if (ecb_expect_false (!ev_is_active (w)))
3528 return; 4767 return;
3529 4768
3530 EV_FREQUENT_CHECK; 4769 EV_FREQUENT_CHECK;
3531 4770
3532#if EV_USE_INOTIFY 4771#if EV_USE_INOTIFY
… …
3545} 4784}
3546#endif 4785#endif
3547 4786
3548#if EV_IDLE_ENABLE 4787#if EV_IDLE_ENABLE
3549void 4788void
3550ev_idle_start (EV_P_ ev_idle *w) 4789ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3551{ 4790{
3552 if (expect_false (ev_is_active (w))) 4791 if (ecb_expect_false (ev_is_active (w)))
3553 return; 4792 return;
3554 4793
3555 pri_adjust (EV_A_ (W)w); 4794 pri_adjust (EV_A_ (W)w);
3556 4795
3557 EV_FREQUENT_CHECK; 4796 EV_FREQUENT_CHECK;
… …
3560 int active = ++idlecnt [ABSPRI (w)]; 4799 int active = ++idlecnt [ABSPRI (w)];
3561 4800
3562 ++idleall; 4801 ++idleall;
3563 ev_start (EV_A_ (W)w, active); 4802 ev_start (EV_A_ (W)w, active);
3564 4803
3565 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4804 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
3566 idles [ABSPRI (w)][active - 1] = w; 4805 idles [ABSPRI (w)][active - 1] = w;
3567 } 4806 }
3568 4807
3569 EV_FREQUENT_CHECK; 4808 EV_FREQUENT_CHECK;
3570} 4809}
3571 4810
3572void 4811void
3573ev_idle_stop (EV_P_ ev_idle *w) 4812ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3574{ 4813{
3575 clear_pending (EV_A_ (W)w); 4814 clear_pending (EV_A_ (W)w);
3576 if (expect_false (!ev_is_active (w))) 4815 if (ecb_expect_false (!ev_is_active (w)))
3577 return; 4816 return;
3578 4817
3579 EV_FREQUENT_CHECK; 4818 EV_FREQUENT_CHECK;
3580 4819
3581 { 4820 {
… …
3592} 4831}
3593#endif 4832#endif
3594 4833
3595#if EV_PREPARE_ENABLE 4834#if EV_PREPARE_ENABLE
3596void 4835void
3597ev_prepare_start (EV_P_ ev_prepare *w) 4836ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3598{ 4837{
3599 if (expect_false (ev_is_active (w))) 4838 if (ecb_expect_false (ev_is_active (w)))
3600 return; 4839 return;
3601 4840
3602 EV_FREQUENT_CHECK; 4841 EV_FREQUENT_CHECK;
3603 4842
3604 ev_start (EV_A_ (W)w, ++preparecnt); 4843 ev_start (EV_A_ (W)w, ++preparecnt);
3605 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4844 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3606 prepares [preparecnt - 1] = w; 4845 prepares [preparecnt - 1] = w;
3607 4846
3608 EV_FREQUENT_CHECK; 4847 EV_FREQUENT_CHECK;
3609} 4848}
3610 4849
3611void 4850void
3612ev_prepare_stop (EV_P_ ev_prepare *w) 4851ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3613{ 4852{
3614 clear_pending (EV_A_ (W)w); 4853 clear_pending (EV_A_ (W)w);
3615 if (expect_false (!ev_is_active (w))) 4854 if (ecb_expect_false (!ev_is_active (w)))
3616 return; 4855 return;
3617 4856
3618 EV_FREQUENT_CHECK; 4857 EV_FREQUENT_CHECK;
3619 4858
3620 { 4859 {
… …
3630} 4869}
3631#endif 4870#endif
3632 4871
3633#if EV_CHECK_ENABLE 4872#if EV_CHECK_ENABLE
3634void 4873void
3635ev_check_start (EV_P_ ev_check *w) 4874ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3636{ 4875{
3637 if (expect_false (ev_is_active (w))) 4876 if (ecb_expect_false (ev_is_active (w)))
3638 return; 4877 return;
3639 4878
3640 EV_FREQUENT_CHECK; 4879 EV_FREQUENT_CHECK;
3641 4880
3642 ev_start (EV_A_ (W)w, ++checkcnt); 4881 ev_start (EV_A_ (W)w, ++checkcnt);
3643 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4882 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
3644 checks [checkcnt - 1] = w; 4883 checks [checkcnt - 1] = w;
3645 4884
3646 EV_FREQUENT_CHECK; 4885 EV_FREQUENT_CHECK;
3647} 4886}
3648 4887
3649void 4888void
3650ev_check_stop (EV_P_ ev_check *w) 4889ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
3651{ 4890{
3652 clear_pending (EV_A_ (W)w); 4891 clear_pending (EV_A_ (W)w);
3653 if (expect_false (!ev_is_active (w))) 4892 if (ecb_expect_false (!ev_is_active (w)))
3654 return; 4893 return;
3655 4894
3656 EV_FREQUENT_CHECK; 4895 EV_FREQUENT_CHECK;
3657 4896
3658 { 4897 {
… …
3667 EV_FREQUENT_CHECK; 4906 EV_FREQUENT_CHECK;
3668} 4907}
3669#endif 4908#endif
3670 4909
3671#if EV_EMBED_ENABLE 4910#if EV_EMBED_ENABLE
3672void noinline 4911ecb_noinline
4912void
3673ev_embed_sweep (EV_P_ ev_embed *w) 4913ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3674{ 4914{
3675 ev_run (w->other, EVRUN_NOWAIT); 4915 ev_run (w->other, EVRUN_NOWAIT);
3676} 4916}
3677 4917
3678static void 4918static void
… …
3726 ev_idle_stop (EV_A_ idle); 4966 ev_idle_stop (EV_A_ idle);
3727} 4967}
3728#endif 4968#endif
3729 4969
3730void 4970void
3731ev_embed_start (EV_P_ ev_embed *w) 4971ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
3732{ 4972{
3733 if (expect_false (ev_is_active (w))) 4973 if (ecb_expect_false (ev_is_active (w)))
3734 return; 4974 return;
3735 4975
3736 { 4976 {
3737 EV_P = w->other; 4977 EV_P = w->other;
3738 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4978 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
… …
3757 4997
3758 EV_FREQUENT_CHECK; 4998 EV_FREQUENT_CHECK;
3759} 4999}
3760 5000
3761void 5001void
3762ev_embed_stop (EV_P_ ev_embed *w) 5002ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
3763{ 5003{
3764 clear_pending (EV_A_ (W)w); 5004 clear_pending (EV_A_ (W)w);
3765 if (expect_false (!ev_is_active (w))) 5005 if (ecb_expect_false (!ev_is_active (w)))
3766 return; 5006 return;
3767 5007
3768 EV_FREQUENT_CHECK; 5008 EV_FREQUENT_CHECK;
3769 5009
3770 ev_io_stop (EV_A_ &w->io); 5010 ev_io_stop (EV_A_ &w->io);
… …
3777} 5017}
3778#endif 5018#endif
3779 5019
3780#if EV_FORK_ENABLE 5020#if EV_FORK_ENABLE
3781void 5021void
3782ev_fork_start (EV_P_ ev_fork *w) 5022ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
3783{ 5023{
3784 if (expect_false (ev_is_active (w))) 5024 if (ecb_expect_false (ev_is_active (w)))
3785 return; 5025 return;
3786 5026
3787 EV_FREQUENT_CHECK; 5027 EV_FREQUENT_CHECK;
3788 5028
3789 ev_start (EV_A_ (W)w, ++forkcnt); 5029 ev_start (EV_A_ (W)w, ++forkcnt);
3790 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5030 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
3791 forks [forkcnt - 1] = w; 5031 forks [forkcnt - 1] = w;
3792 5032
3793 EV_FREQUENT_CHECK; 5033 EV_FREQUENT_CHECK;
3794} 5034}
3795 5035
3796void 5036void
3797ev_fork_stop (EV_P_ ev_fork *w) 5037ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
3798{ 5038{
3799 clear_pending (EV_A_ (W)w); 5039 clear_pending (EV_A_ (W)w);
3800 if (expect_false (!ev_is_active (w))) 5040 if (ecb_expect_false (!ev_is_active (w)))
3801 return; 5041 return;
3802 5042
3803 EV_FREQUENT_CHECK; 5043 EV_FREQUENT_CHECK;
3804 5044
3805 { 5045 {
… …
3815} 5055}
3816#endif 5056#endif
3817 5057
3818#if EV_CLEANUP_ENABLE 5058#if EV_CLEANUP_ENABLE
3819void 5059void
3820ev_cleanup_start (EV_P_ ev_cleanup *w) 5060ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
3821{ 5061{
3822 if (expect_false (ev_is_active (w))) 5062 if (ecb_expect_false (ev_is_active (w)))
3823 return; 5063 return;
3824 5064
3825 EV_FREQUENT_CHECK; 5065 EV_FREQUENT_CHECK;
3826 5066
3827 ev_start (EV_A_ (W)w, ++cleanupcnt); 5067 ev_start (EV_A_ (W)w, ++cleanupcnt);
3828 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 5068 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
3829 cleanups [cleanupcnt - 1] = w; 5069 cleanups [cleanupcnt - 1] = w;
3830 5070
3831 /* cleanup watchers should never keep a refcount on the loop */ 5071 /* cleanup watchers should never keep a refcount on the loop */
3832 ev_unref (EV_A); 5072 ev_unref (EV_A);
3833 EV_FREQUENT_CHECK; 5073 EV_FREQUENT_CHECK;
3834} 5074}
3835 5075
3836void 5076void
3837ev_cleanup_stop (EV_P_ ev_cleanup *w) 5077ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
3838{ 5078{
3839 clear_pending (EV_A_ (W)w); 5079 clear_pending (EV_A_ (W)w);
3840 if (expect_false (!ev_is_active (w))) 5080 if (ecb_expect_false (!ev_is_active (w)))
3841 return; 5081 return;
3842 5082
3843 EV_FREQUENT_CHECK; 5083 EV_FREQUENT_CHECK;
3844 ev_ref (EV_A); 5084 ev_ref (EV_A);
3845 5085
… …
3856} 5096}
3857#endif 5097#endif
3858 5098
3859#if EV_ASYNC_ENABLE 5099#if EV_ASYNC_ENABLE
3860void 5100void
3861ev_async_start (EV_P_ ev_async *w) 5101ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
3862{ 5102{
3863 if (expect_false (ev_is_active (w))) 5103 if (ecb_expect_false (ev_is_active (w)))
3864 return; 5104 return;
3865 5105
3866 w->sent = 0; 5106 w->sent = 0;
3867 5107
3868 evpipe_init (EV_A); 5108 evpipe_init (EV_A);
3869 5109
3870 EV_FREQUENT_CHECK; 5110 EV_FREQUENT_CHECK;
3871 5111
3872 ev_start (EV_A_ (W)w, ++asynccnt); 5112 ev_start (EV_A_ (W)w, ++asynccnt);
3873 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5113 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
3874 asyncs [asynccnt - 1] = w; 5114 asyncs [asynccnt - 1] = w;
3875 5115
3876 EV_FREQUENT_CHECK; 5116 EV_FREQUENT_CHECK;
3877} 5117}
3878 5118
3879void 5119void
3880ev_async_stop (EV_P_ ev_async *w) 5120ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
3881{ 5121{
3882 clear_pending (EV_A_ (W)w); 5122 clear_pending (EV_A_ (W)w);
3883 if (expect_false (!ev_is_active (w))) 5123 if (ecb_expect_false (!ev_is_active (w)))
3884 return; 5124 return;
3885 5125
3886 EV_FREQUENT_CHECK; 5126 EV_FREQUENT_CHECK;
3887 5127
3888 { 5128 {
… …
3896 5136
3897 EV_FREQUENT_CHECK; 5137 EV_FREQUENT_CHECK;
3898} 5138}
3899 5139
3900void 5140void
3901ev_async_send (EV_P_ ev_async *w) 5141ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
3902{ 5142{
3903 w->sent = 1; 5143 w->sent = 1;
3904 evpipe_write (EV_A_ &async_pending); 5144 evpipe_write (EV_A_ &async_pending);
3905} 5145}
3906#endif 5146#endif
… …
3943 5183
3944 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5184 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3945} 5185}
3946 5186
3947void 5187void
3948ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5188ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
3949{ 5189{
3950 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5190 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3951
3952 if (expect_false (!once))
3953 {
3954 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3955 return;
3956 }
3957 5191
3958 once->cb = cb; 5192 once->cb = cb;
3959 once->arg = arg; 5193 once->arg = arg;
3960 5194
3961 ev_init (&once->io, once_cb_io); 5195 ev_init (&once->io, once_cb_io);
… …
3974} 5208}
3975 5209
3976/*****************************************************************************/ 5210/*****************************************************************************/
3977 5211
3978#if EV_WALK_ENABLE 5212#if EV_WALK_ENABLE
3979void ecb_cold 5213ecb_cold
5214void
3980ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5215ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
3981{ 5216{
3982 int i, j; 5217 int i, j;
3983 ev_watcher_list *wl, *wn; 5218 ev_watcher_list *wl, *wn;
3984 5219
3985 if (types & (EV_IO | EV_EMBED)) 5220 if (types & (EV_IO | EV_EMBED))
… …
4028 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5263 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
4029#endif 5264#endif
4030 5265
4031#if EV_IDLE_ENABLE 5266#if EV_IDLE_ENABLE
4032 if (types & EV_IDLE) 5267 if (types & EV_IDLE)
4033 for (j = NUMPRI; i--; ) 5268 for (j = NUMPRI; j--; )
4034 for (i = idlecnt [j]; i--; ) 5269 for (i = idlecnt [j]; i--; )
4035 cb (EV_A_ EV_IDLE, idles [j][i]); 5270 cb (EV_A_ EV_IDLE, idles [j][i]);
4036#endif 5271#endif
4037 5272
4038#if EV_FORK_ENABLE 5273#if EV_FORK_ENABLE
… …
4091 5326
4092#if EV_MULTIPLICITY 5327#if EV_MULTIPLICITY
4093 #include "ev_wrap.h" 5328 #include "ev_wrap.h"
4094#endif 5329#endif
4095 5330
4096EV_CPP(})
4097

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