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Comparing libev/ev.c (file contents):
Revision 1.381 by root, Mon Jun 27 21:29:35 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#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)
498 #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)
499 #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)
500 #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)
501 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) 919 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
502#else 920#else
503 #define ecb_attribute(attrlist)
504 #define ecb_is_constant(expr) 0
505 #define ecb_expect(expr,value) (expr)
506 #define ecb_prefetch(addr,rw,locality) 921 #define ecb_prefetch(addr,rw,locality)
507#endif 922#endif
508 923
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
509#define ecb_noinline ecb_attribute ((__noinline__)) 950 #define ecb_noinline ecb_attribute ((__noinline__))
510#define ecb_noreturn ecb_attribute ((__noreturn__)) 951#endif
952
511#define ecb_unused ecb_attribute ((__unused__)) 953#define ecb_unused ecb_attribute ((__unused__))
512#define ecb_const ecb_attribute ((__const__)) 954#define ecb_const ecb_attribute ((__const__))
513#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
514 968
515#if ECB_GCC_VERSION(4,3) 969#if ECB_GCC_VERSION(4,3)
516 #define ecb_artificial ecb_attribute ((__artificial__)) 970 #define ecb_artificial ecb_attribute ((__artificial__))
517 #define ecb_hot ecb_attribute ((__hot__)) 971 #define ecb_hot ecb_attribute ((__hot__))
518 #define ecb_cold ecb_attribute ((__cold__)) 972 #define ecb_cold ecb_attribute ((__cold__))
… …
525/* put around conditional expressions if you are very sure that the */ 979/* put around conditional expressions if you are very sure that the */
526/* expression is mostly true or mostly false. note that these return */ 980/* expression is mostly true or mostly false. note that these return */
527/* booleans, not the expression. */ 981/* booleans, not the expression. */
528#define ecb_expect_false(expr) ecb_expect (!!(expr), 0) 982#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
529#define ecb_expect_true(expr) ecb_expect (!!(expr), 1) 983#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
530/* 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)
531 987
532#define expect_false(cond) ecb_expect_false (cond) 988/* count trailing zero bits and count # of one bits */
533#define expect_true(cond) ecb_expect_true (cond) 989#if ECB_GCC_VERSION(3,4) \
534#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
535 1595
536#define inline_size ecb_inline 1596#define inline_size ecb_inline
537 1597
538#if EV_FEATURE_CODE 1598#if EV_FEATURE_CODE
539# define inline_speed ecb_inline 1599# define inline_speed ecb_inline
540#else 1600#else
541# define inline_speed static noinline 1601# define inline_speed ecb_noinline static
542#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/*****************************************************************************/
543 1669
544#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1670#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
545 1671
546#if EV_MINPRI == EV_MAXPRI 1672#if EV_MINPRI == EV_MAXPRI
547# define ABSPRI(w) (((W)w), 0) 1673# define ABSPRI(w) (((W)w), 0)
548#else 1674#else
549# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1675# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
550#endif 1676#endif
551 1677
552#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1678#define EMPTY /* required for microsofts broken pseudo-c compiler */
553#define EMPTY2(a,b) /* used to suppress some warnings */
554 1679
555typedef ev_watcher *W; 1680typedef ev_watcher *W;
556typedef ev_watcher_list *WL; 1681typedef ev_watcher_list *WL;
557typedef ev_watcher_time *WT; 1682typedef ev_watcher_time *WT;
558 1683
… …
583# include "ev_win32.c" 1708# include "ev_win32.c"
584#endif 1709#endif
585 1710
586/*****************************************************************************/ 1711/*****************************************************************************/
587 1712
1713#if EV_USE_LINUXAIO
1714# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1715#endif
1716
588/* define a suitable floor function (only used by periodics atm) */ 1717/* define a suitable floor function (only used by periodics atm) */
589 1718
590#if EV_USE_FLOOR 1719#if EV_USE_FLOOR
591# include <math.h> 1720# include <math.h>
592# define ev_floor(v) floor (v) 1721# define ev_floor(v) floor (v)
593#else 1722#else
594 1723
595#include <float.h> 1724#include <float.h>
596 1725
597/* 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
598static ev_tstamp noinline 1728static ev_tstamp
599ev_floor (ev_tstamp v) 1729ev_floor (ev_tstamp v)
600{ 1730{
601 /* the choice of shift factor is not terribly important */ 1731 /* the choice of shift factor is not terribly important */
602#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1732#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
603 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1733 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
604#else 1734#else
605 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; 1735 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
606#endif 1736#endif
607 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
608 /* argument too large for an unsigned long? */ 1746 /* argument too large for an unsigned long? then reduce it */
609 if (expect_false (v >= shift)) 1747 if (ecb_expect_false (v >= shift))
610 { 1748 {
611 ev_tstamp f; 1749 ev_tstamp f;
612 1750
613 if (v == v - 1.) 1751 if (v == v - 1.)
614 return v; /* very large number */ 1752 return v; /* very large numbers are assumed to be integer */
615 1753
616 f = shift * ev_floor (v * (1. / shift)); 1754 f = shift * ev_floor (v * (1. / shift));
617 return f + ev_floor (v - f); 1755 return f + ev_floor (v - f);
618 } 1756 }
619 1757
620 /* special treatment for negative args? */
621 if (expect_false (v < 0.))
622 {
623 ev_tstamp f = -ev_floor (-v);
624
625 return f - (f == v ? 0 : 1);
626 }
627
628 /* fits into an unsigned long */ 1758 /* fits into an unsigned long */
629 return (unsigned long)v; 1759 return (unsigned long)v;
630} 1760}
631 1761
632#endif 1762#endif
… …
635 1765
636#ifdef __linux 1766#ifdef __linux
637# include <sys/utsname.h> 1767# include <sys/utsname.h>
638#endif 1768#endif
639 1769
640static unsigned int noinline ecb_cold 1770ecb_noinline ecb_cold
1771static unsigned int
641ev_linux_version (void) 1772ev_linux_version (void)
642{ 1773{
643#ifdef __linux 1774#ifdef __linux
644 unsigned int v = 0; 1775 unsigned int v = 0;
645 struct utsname buf; 1776 struct utsname buf;
… …
674} 1805}
675 1806
676/*****************************************************************************/ 1807/*****************************************************************************/
677 1808
678#if EV_AVOID_STDIO 1809#if EV_AVOID_STDIO
679static void noinline ecb_cold 1810ecb_noinline ecb_cold
1811static void
680ev_printerr (const char *msg) 1812ev_printerr (const char *msg)
681{ 1813{
682 write (STDERR_FILENO, msg, strlen (msg)); 1814 write (STDERR_FILENO, msg, strlen (msg));
683} 1815}
684#endif 1816#endif
685 1817
686static void (*syserr_cb)(const char *msg); 1818static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
687 1819
688void ecb_cold 1820ecb_cold
1821void
689ev_set_syserr_cb (void (*cb)(const char *msg)) 1822ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
690{ 1823{
691 syserr_cb = cb; 1824 syserr_cb = cb;
692} 1825}
693 1826
694static void noinline ecb_cold 1827ecb_noinline ecb_cold
1828static void
695ev_syserr (const char *msg) 1829ev_syserr (const char *msg)
696{ 1830{
697 if (!msg) 1831 if (!msg)
698 msg = "(libev) system error"; 1832 msg = "(libev) system error";
699 1833
… …
712 abort (); 1846 abort ();
713 } 1847 }
714} 1848}
715 1849
716static void * 1850static void *
717ev_realloc_emul (void *ptr, long size) 1851ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
718{ 1852{
719#if __GLIBC__
720 return realloc (ptr, size);
721#else
722 /* some systems, notably openbsd and darwin, fail to properly 1853 /* some systems, notably openbsd and darwin, fail to properly
723 * 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
724 * 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.
725 */ 1858 */
726 1859
727 if (size) 1860 if (size)
728 return realloc (ptr, size); 1861 return realloc (ptr, size);
729 1862
730 free (ptr); 1863 free (ptr);
731 return 0; 1864 return 0;
732#endif
733} 1865}
734 1866
735static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1867static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
736 1868
737void ecb_cold 1869ecb_cold
1870void
738ev_set_allocator (void *(*cb)(void *ptr, long size)) 1871ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
739{ 1872{
740 alloc = cb; 1873 alloc = cb;
741} 1874}
742 1875
743inline_speed void * 1876inline_speed void *
… …
770typedef struct 1903typedef struct
771{ 1904{
772 WL head; 1905 WL head;
773 unsigned char events; /* the events watched for */ 1906 unsigned char events; /* the events watched for */
774 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) */
775 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 */
776 unsigned char unused; 1909 unsigned char eflags; /* flags field for use by backends */
777#if EV_USE_EPOLL 1910#if EV_USE_EPOLL
778 unsigned int egen; /* generation counter to counter epoll bugs */ 1911 unsigned int egen; /* generation counter to counter epoll bugs */
779#endif 1912#endif
780#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 1913#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
781 SOCKET handle; 1914 SOCKET handle;
… …
831 #undef VAR 1964 #undef VAR
832 }; 1965 };
833 #include "ev_wrap.h" 1966 #include "ev_wrap.h"
834 1967
835 static struct ev_loop default_loop_struct; 1968 static struct ev_loop default_loop_struct;
836 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 */
837 1970
838#else 1971#else
839 1972
840 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 */
841 #define VAR(name,decl) static decl; 1974 #define VAR(name,decl) static decl;
842 #include "ev_vars.h" 1975 #include "ev_vars.h"
843 #undef VAR 1976 #undef VAR
844 1977
845 static int ev_default_loop_ptr; 1978 static int ev_default_loop_ptr;
846 1979
847#endif 1980#endif
848 1981
849#if EV_FEATURE_API 1982#if EV_FEATURE_API
850# 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)
851# 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)
852# define EV_INVOKE_PENDING invoke_cb (EV_A) 1985# define EV_INVOKE_PENDING invoke_cb (EV_A)
853#else 1986#else
854# define EV_RELEASE_CB (void)0 1987# define EV_RELEASE_CB (void)0
855# define EV_ACQUIRE_CB (void)0 1988# define EV_ACQUIRE_CB (void)0
856# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1989# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
… …
860 1993
861/*****************************************************************************/ 1994/*****************************************************************************/
862 1995
863#ifndef EV_HAVE_EV_TIME 1996#ifndef EV_HAVE_EV_TIME
864ev_tstamp 1997ev_tstamp
865ev_time (void) 1998ev_time (void) EV_NOEXCEPT
866{ 1999{
867#if EV_USE_REALTIME 2000#if EV_USE_REALTIME
868 if (expect_true (have_realtime)) 2001 if (ecb_expect_true (have_realtime))
869 { 2002 {
870 struct timespec ts; 2003 struct timespec ts;
871 clock_gettime (CLOCK_REALTIME, &ts); 2004 clock_gettime (CLOCK_REALTIME, &ts);
872 return ts.tv_sec + ts.tv_nsec * 1e-9; 2005 return EV_TS_GET (ts);
873 } 2006 }
874#endif 2007#endif
875 2008
2009 {
876 struct timeval tv; 2010 struct timeval tv;
877 gettimeofday (&tv, 0); 2011 gettimeofday (&tv, 0);
878 return tv.tv_sec + tv.tv_usec * 1e-6; 2012 return EV_TV_GET (tv);
2013 }
879} 2014}
880#endif 2015#endif
881 2016
882inline_size ev_tstamp 2017inline_size ev_tstamp
883get_clock (void) 2018get_clock (void)
884{ 2019{
885#if EV_USE_MONOTONIC 2020#if EV_USE_MONOTONIC
886 if (expect_true (have_monotonic)) 2021 if (ecb_expect_true (have_monotonic))
887 { 2022 {
888 struct timespec ts; 2023 struct timespec ts;
889 clock_gettime (CLOCK_MONOTONIC, &ts); 2024 clock_gettime (CLOCK_MONOTONIC, &ts);
890 return ts.tv_sec + ts.tv_nsec * 1e-9; 2025 return EV_TS_GET (ts);
891 } 2026 }
892#endif 2027#endif
893 2028
894 return ev_time (); 2029 return ev_time ();
895} 2030}
896 2031
897#if EV_MULTIPLICITY 2032#if EV_MULTIPLICITY
898ev_tstamp 2033ev_tstamp
899ev_now (EV_P) 2034ev_now (EV_P) EV_NOEXCEPT
900{ 2035{
901 return ev_rt_now; 2036 return ev_rt_now;
902} 2037}
903#endif 2038#endif
904 2039
905void 2040void
906ev_sleep (ev_tstamp delay) 2041ev_sleep (ev_tstamp delay) EV_NOEXCEPT
907{ 2042{
908 if (delay > 0.) 2043 if (delay > EV_TS_CONST (0.))
909 { 2044 {
910#if EV_USE_NANOSLEEP 2045#if EV_USE_NANOSLEEP
911 struct timespec ts; 2046 struct timespec ts;
912 2047
913 EV_TS_SET (ts, delay); 2048 EV_TS_SET (ts, delay);
914 nanosleep (&ts, 0); 2049 nanosleep (&ts, 0);
915#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) */
916 Sleep ((unsigned long)(delay * 1e3)); 2053 Sleep ((unsigned long)(EV_TS_TO_MSEC (delay)));
917#else 2054#else
918 struct timeval tv; 2055 struct timeval tv;
919 2056
920 /* 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 */
921 /* something not guaranteed by newer posix versions, but guaranteed */ 2058 /* something not guaranteed by newer posix versions, but guaranteed */
… …
939 2076
940 do 2077 do
941 ncur <<= 1; 2078 ncur <<= 1;
942 while (cnt > ncur); 2079 while (cnt > ncur);
943 2080
944 /* 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 */
945 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 2082 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
946 { 2083 {
947 ncur *= elem; 2084 ncur *= elem;
948 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);
949 ncur = ncur - sizeof (void *) * 4; 2086 ncur = ncur - sizeof (void *) * 4;
… …
951 } 2088 }
952 2089
953 return ncur; 2090 return ncur;
954} 2091}
955 2092
956static void * noinline ecb_cold 2093ecb_noinline ecb_cold
2094static void *
957array_realloc (int elem, void *base, int *cur, int cnt) 2095array_realloc (int elem, void *base, int *cur, int cnt)
958{ 2096{
959 *cur = array_nextsize (elem, *cur, cnt); 2097 *cur = array_nextsize (elem, *cur, cnt);
960 return ev_realloc (base, elem * *cur); 2098 return ev_realloc (base, elem * *cur);
961} 2099}
962 2100
2101#define array_needsize_noinit(base,offset,count)
2102
963#define array_init_zero(base,count) \ 2103#define array_needsize_zerofill(base,offset,count) \
964 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2104 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
965 2105
966#define array_needsize(type,base,cur,cnt,init) \ 2106#define array_needsize(type,base,cur,cnt,init) \
967 if (expect_false ((cnt) > (cur))) \ 2107 if (ecb_expect_false ((cnt) > (cur))) \
968 { \ 2108 { \
969 int ocur_ = (cur); \ 2109 ecb_unused int ocur_ = (cur); \
970 (base) = (type *)array_realloc \ 2110 (base) = (type *)array_realloc \
971 (sizeof (type), (base), &(cur), (cnt)); \ 2111 (sizeof (type), (base), &(cur), (cnt)); \
972 init ((base) + (ocur_), (cur) - ocur_); \ 2112 init ((base), ocur_, ((cur) - ocur_)); \
973 } 2113 }
974 2114
975#if 0 2115#if 0
976#define array_slim(type,stem) \ 2116#define array_slim(type,stem) \
977 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2117 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
986 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
987 2127
988/*****************************************************************************/ 2128/*****************************************************************************/
989 2129
990/* dummy callback for pending events */ 2130/* dummy callback for pending events */
991static void noinline 2131ecb_noinline
2132static void
992pendingcb (EV_P_ ev_prepare *w, int revents) 2133pendingcb (EV_P_ ev_prepare *w, int revents)
993{ 2134{
994} 2135}
995 2136
996void noinline 2137ecb_noinline
2138void
997ev_feed_event (EV_P_ void *w, int revents) 2139ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
998{ 2140{
999 W w_ = (W)w; 2141 W w_ = (W)w;
1000 int pri = ABSPRI (w_); 2142 int pri = ABSPRI (w_);
1001 2143
1002 if (expect_false (w_->pending)) 2144 if (ecb_expect_false (w_->pending))
1003 pendings [pri][w_->pending - 1].events |= revents; 2145 pendings [pri][w_->pending - 1].events |= revents;
1004 else 2146 else
1005 { 2147 {
1006 w_->pending = ++pendingcnt [pri]; 2148 w_->pending = ++pendingcnt [pri];
1007 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2149 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
1008 pendings [pri][w_->pending - 1].w = w_; 2150 pendings [pri][w_->pending - 1].w = w_;
1009 pendings [pri][w_->pending - 1].events = revents; 2151 pendings [pri][w_->pending - 1].events = revents;
1010 } 2152 }
2153
2154 pendingpri = NUMPRI - 1;
1011} 2155}
1012 2156
1013inline_speed void 2157inline_speed void
1014feed_reverse (EV_P_ W w) 2158feed_reverse (EV_P_ W w)
1015{ 2159{
1016 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2160 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
1017 rfeeds [rfeedcnt++] = w; 2161 rfeeds [rfeedcnt++] = w;
1018} 2162}
1019 2163
1020inline_size void 2164inline_size void
1021feed_reverse_done (EV_P_ int revents) 2165feed_reverse_done (EV_P_ int revents)
… …
1056inline_speed void 2200inline_speed void
1057fd_event (EV_P_ int fd, int revents) 2201fd_event (EV_P_ int fd, int revents)
1058{ 2202{
1059 ANFD *anfd = anfds + fd; 2203 ANFD *anfd = anfds + fd;
1060 2204
1061 if (expect_true (!anfd->reify)) 2205 if (ecb_expect_true (!anfd->reify))
1062 fd_event_nocheck (EV_A_ fd, revents); 2206 fd_event_nocheck (EV_A_ fd, revents);
1063} 2207}
1064 2208
1065void 2209void
1066ev_feed_fd_event (EV_P_ int fd, int revents) 2210ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
1067{ 2211{
1068 if (fd >= 0 && fd < anfdmax) 2212 if (fd >= 0 && fd < anfdmax)
1069 fd_event_nocheck (EV_A_ fd, revents); 2213 fd_event_nocheck (EV_A_ fd, revents);
1070} 2214}
1071 2215
… …
1108 ev_io *w; 2252 ev_io *w;
1109 2253
1110 unsigned char o_events = anfd->events; 2254 unsigned char o_events = anfd->events;
1111 unsigned char o_reify = anfd->reify; 2255 unsigned char o_reify = anfd->reify;
1112 2256
1113 anfd->reify = 0; 2257 anfd->reify = 0;
1114 2258
1115 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 2259 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
1116 { 2260 {
1117 anfd->events = 0; 2261 anfd->events = 0;
1118 2262
1119 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)
1120 anfd->events |= (unsigned char)w->events; 2264 anfd->events |= (unsigned char)w->events;
… …
1129 2273
1130 fdchangecnt = 0; 2274 fdchangecnt = 0;
1131} 2275}
1132 2276
1133/* something about the given fd changed */ 2277/* something about the given fd changed */
1134inline_size void 2278inline_size
2279void
1135fd_change (EV_P_ int fd, int flags) 2280fd_change (EV_P_ int fd, int flags)
1136{ 2281{
1137 unsigned char reify = anfds [fd].reify; 2282 unsigned char reify = anfds [fd].reify;
1138 anfds [fd].reify |= flags; 2283 anfds [fd].reify |= flags;
1139 2284
1140 if (expect_true (!reify)) 2285 if (ecb_expect_true (!reify))
1141 { 2286 {
1142 ++fdchangecnt; 2287 ++fdchangecnt;
1143 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2288 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
1144 fdchanges [fdchangecnt - 1] = fd; 2289 fdchanges [fdchangecnt - 1] = fd;
1145 } 2290 }
1146} 2291}
1147 2292
1148/* 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 */
1149inline_speed void ecb_cold 2294inline_speed ecb_cold void
1150fd_kill (EV_P_ int fd) 2295fd_kill (EV_P_ int fd)
1151{ 2296{
1152 ev_io *w; 2297 ev_io *w;
1153 2298
1154 while ((w = (ev_io *)anfds [fd].head)) 2299 while ((w = (ev_io *)anfds [fd].head))
… …
1157 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);
1158 } 2303 }
1159} 2304}
1160 2305
1161/* check whether the given fd is actually valid, for error recovery */ 2306/* check whether the given fd is actually valid, for error recovery */
1162inline_size int ecb_cold 2307inline_size ecb_cold int
1163fd_valid (int fd) 2308fd_valid (int fd)
1164{ 2309{
1165#ifdef _WIN32 2310#ifdef _WIN32
1166 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2311 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1167#else 2312#else
1168 return fcntl (fd, F_GETFD) != -1; 2313 return fcntl (fd, F_GETFD) != -1;
1169#endif 2314#endif
1170} 2315}
1171 2316
1172/* called on EBADF to verify fds */ 2317/* called on EBADF to verify fds */
1173static void noinline ecb_cold 2318ecb_noinline ecb_cold
2319static void
1174fd_ebadf (EV_P) 2320fd_ebadf (EV_P)
1175{ 2321{
1176 int fd; 2322 int fd;
1177 2323
1178 for (fd = 0; fd < anfdmax; ++fd) 2324 for (fd = 0; fd < anfdmax; ++fd)
… …
1180 if (!fd_valid (fd) && errno == EBADF) 2326 if (!fd_valid (fd) && errno == EBADF)
1181 fd_kill (EV_A_ fd); 2327 fd_kill (EV_A_ fd);
1182} 2328}
1183 2329
1184/* 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 */
1185static void noinline ecb_cold 2331ecb_noinline ecb_cold
2332static void
1186fd_enomem (EV_P) 2333fd_enomem (EV_P)
1187{ 2334{
1188 int fd; 2335 int fd;
1189 2336
1190 for (fd = anfdmax; fd--; ) 2337 for (fd = anfdmax; fd--; )
… …
1194 break; 2341 break;
1195 } 2342 }
1196} 2343}
1197 2344
1198/* 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 */
1199static void noinline 2346ecb_noinline
2347static void
1200fd_rearm_all (EV_P) 2348fd_rearm_all (EV_P)
1201{ 2349{
1202 int fd; 2350 int fd;
1203 2351
1204 for (fd = 0; fd < anfdmax; ++fd) 2352 for (fd = 0; fd < anfdmax; ++fd)
… …
1257 ev_tstamp minat; 2405 ev_tstamp minat;
1258 ANHE *minpos; 2406 ANHE *minpos;
1259 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2407 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1260 2408
1261 /* find minimum child */ 2409 /* find minimum child */
1262 if (expect_true (pos + DHEAP - 1 < E)) 2410 if (ecb_expect_true (pos + DHEAP - 1 < E))
1263 { 2411 {
1264 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2412 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1265 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));
1266 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));
1267 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));
1268 } 2416 }
1269 else if (pos < E) 2417 else if (pos < E)
1270 { 2418 {
1271 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2419 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1272 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));
1273 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));
1274 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));
1275 } 2423 }
1276 else 2424 else
1277 break; 2425 break;
1278 2426
1279 if (ANHE_at (he) <= minat) 2427 if (ANHE_at (he) <= minat)
… …
1287 2435
1288 heap [k] = he; 2436 heap [k] = he;
1289 ev_active (ANHE_w (he)) = k; 2437 ev_active (ANHE_w (he)) = k;
1290} 2438}
1291 2439
1292#else /* 4HEAP */ 2440#else /* not 4HEAP */
1293 2441
1294#define HEAP0 1 2442#define HEAP0 1
1295#define HPARENT(k) ((k) >> 1) 2443#define HPARENT(k) ((k) >> 1)
1296#define UPHEAP_DONE(p,k) (!(p)) 2444#define UPHEAP_DONE(p,k) (!(p))
1297 2445
… …
1385 2533
1386/*****************************************************************************/ 2534/*****************************************************************************/
1387 2535
1388#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2536#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1389 2537
1390static void noinline ecb_cold 2538ecb_noinline ecb_cold
2539static void
1391evpipe_init (EV_P) 2540evpipe_init (EV_P)
1392{ 2541{
1393 if (!ev_is_active (&pipe_w)) 2542 if (!ev_is_active (&pipe_w))
1394 { 2543 {
2544 int fds [2];
2545
1395# if EV_USE_EVENTFD 2546# if EV_USE_EVENTFD
2547 fds [0] = -1;
1396 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2548 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1397 if (evfd < 0 && errno == EINVAL) 2549 if (fds [1] < 0 && errno == EINVAL)
1398 evfd = eventfd (0, 0); 2550 fds [1] = eventfd (0, 0);
1399 2551
1400 if (evfd >= 0) 2552 if (fds [1] < 0)
2553# endif
1401 { 2554 {
2555 while (pipe (fds))
2556 ev_syserr ("(libev) error creating signal/async pipe");
2557
2558 fd_intern (fds [0]);
2559 }
2560
1402 evpipe [0] = -1; 2561 evpipe [0] = fds [0];
1403 fd_intern (evfd); /* doing it twice doesn't hurt */ 2562
1404 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));
1405 } 2613 }
1406 else 2614 else
1407# endif 2615#endif
1408 { 2616 {
1409 while (pipe (evpipe)) 2617#ifdef _WIN32
1410 ev_syserr ("(libev) error creating signal/async pipe"); 2618 WSABUF buf;
1411 2619 DWORD sent;
1412 fd_intern (evpipe [0]); 2620 buf.buf = (char *)&buf;
1413 fd_intern (evpipe [1]); 2621 buf.len = 1;
1414 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2622 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2623#else
2624 write (evpipe [1], &(evpipe [1]), 1);
2625#endif
1415 } 2626 }
1416 2627
1417 ev_io_start (EV_A_ &pipe_w);
1418 ev_unref (EV_A); /* watcher should not keep loop alive */
1419 }
1420}
1421
1422inline_speed void
1423evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1424{
1425 if (!*flag)
1426 {
1427 *flag = 1;
1428
1429 pipe_write_skipped = 1;
1430
1431 if (pipe_write_wanted)
1432 {
1433 int old_errno;
1434
1435 pipe_write_skipped = 0;
1436
1437 old_errno = errno; /* save errno because write will clobber it */
1438
1439#if EV_USE_EVENTFD
1440 if (evfd >= 0)
1441 {
1442 uint64_t counter = 1;
1443 write (evfd, &counter, sizeof (uint64_t));
1444 }
1445 else
1446#endif
1447 {
1448 /* win32 people keep sending patches that change this write() to send() */
1449 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1450 /* so when you think this write should be a send instead, please find out */
1451 /* where your send() is from - it's definitely not the microsoft send, and */
1452 /* tell me. thank you. */
1453 write (evpipe [1], &(evpipe [1]), 1);
1454 }
1455
1456 errno = old_errno; 2628 errno = old_errno;
1457 }
1458 } 2629 }
1459} 2630}
1460 2631
1461/* called whenever the libev signal pipe */ 2632/* called whenever the libev signal pipe */
1462/* got some events (signal, async) */ 2633/* got some events (signal, async) */
… …
1466 int i; 2637 int i;
1467 2638
1468 if (revents & EV_READ) 2639 if (revents & EV_READ)
1469 { 2640 {
1470#if EV_USE_EVENTFD 2641#if EV_USE_EVENTFD
1471 if (evfd >= 0) 2642 if (evpipe [0] < 0)
1472 { 2643 {
1473 uint64_t counter; 2644 uint64_t counter;
1474 read (evfd, &counter, sizeof (uint64_t)); 2645 read (evpipe [1], &counter, sizeof (uint64_t));
1475 } 2646 }
1476 else 2647 else
1477#endif 2648#endif
1478 { 2649 {
1479 char dummy; 2650 char dummy[4];
1480 /* 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
1481 read (evpipe [0], &dummy, 1); 2659 read (evpipe [0], &dummy, sizeof (dummy));
2660#endif
1482 } 2661 }
1483 } 2662 }
1484 2663
1485 pipe_write_skipped = 0; 2664 pipe_write_skipped = 0;
2665
2666 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1486 2667
1487#if EV_SIGNAL_ENABLE 2668#if EV_SIGNAL_ENABLE
1488 if (sig_pending) 2669 if (sig_pending)
1489 { 2670 {
1490 sig_pending = 0; 2671 sig_pending = 0;
1491 2672
2673 ECB_MEMORY_FENCE;
2674
1492 for (i = EV_NSIG - 1; i--; ) 2675 for (i = EV_NSIG - 1; i--; )
1493 if (expect_false (signals [i].pending)) 2676 if (ecb_expect_false (signals [i].pending))
1494 ev_feed_signal_event (EV_A_ i + 1); 2677 ev_feed_signal_event (EV_A_ i + 1);
1495 } 2678 }
1496#endif 2679#endif
1497 2680
1498#if EV_ASYNC_ENABLE 2681#if EV_ASYNC_ENABLE
1499 if (async_pending) 2682 if (async_pending)
1500 { 2683 {
1501 async_pending = 0; 2684 async_pending = 0;
2685
2686 ECB_MEMORY_FENCE;
1502 2687
1503 for (i = asynccnt; i--; ) 2688 for (i = asynccnt; i--; )
1504 if (asyncs [i]->sent) 2689 if (asyncs [i]->sent)
1505 { 2690 {
1506 asyncs [i]->sent = 0; 2691 asyncs [i]->sent = 0;
2692 ECB_MEMORY_FENCE_RELEASE;
1507 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2693 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1508 } 2694 }
1509 } 2695 }
1510#endif 2696#endif
1511} 2697}
1512 2698
1513/*****************************************************************************/ 2699/*****************************************************************************/
1514 2700
1515void 2701void
1516ev_feed_signal (int signum) 2702ev_feed_signal (int signum) EV_NOEXCEPT
1517{ 2703{
1518#if EV_MULTIPLICITY 2704#if EV_MULTIPLICITY
2705 EV_P;
2706 ECB_MEMORY_FENCE_ACQUIRE;
1519 EV_P = signals [signum - 1].loop; 2707 EV_A = signals [signum - 1].loop;
1520 2708
1521 if (!EV_A) 2709 if (!EV_A)
1522 return; 2710 return;
1523#endif 2711#endif
1524 2712
1525 if (!ev_active (&pipe_w))
1526 return;
1527
1528 signals [signum - 1].pending = 1; 2713 signals [signum - 1].pending = 1;
1529 evpipe_write (EV_A_ &sig_pending); 2714 evpipe_write (EV_A_ &sig_pending);
1530} 2715}
1531 2716
1532static void 2717static void
… …
1537#endif 2722#endif
1538 2723
1539 ev_feed_signal (signum); 2724 ev_feed_signal (signum);
1540} 2725}
1541 2726
1542void noinline 2727ecb_noinline
2728void
1543ev_feed_signal_event (EV_P_ int signum) 2729ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1544{ 2730{
1545 WL w; 2731 WL w;
1546 2732
1547 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2733 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
1548 return; 2734 return;
1549 2735
1550 --signum; 2736 --signum;
1551 2737
1552#if EV_MULTIPLICITY 2738#if EV_MULTIPLICITY
1553 /* 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 */
1554 /* or, likely more useful, feeding a signal nobody is waiting for */ 2740 /* or, likely more useful, feeding a signal nobody is waiting for */
1555 2741
1556 if (expect_false (signals [signum].loop != EV_A)) 2742 if (ecb_expect_false (signals [signum].loop != EV_A))
1557 return; 2743 return;
1558#endif 2744#endif
1559 2745
1560 signals [signum].pending = 0; 2746 signals [signum].pending = 0;
2747 ECB_MEMORY_FENCE_RELEASE;
1561 2748
1562 for (w = signals [signum].head; w; w = w->next) 2749 for (w = signals [signum].head; w; w = w->next)
1563 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2750 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1564} 2751}
1565 2752
… …
1656# include "ev_kqueue.c" 2843# include "ev_kqueue.c"
1657#endif 2844#endif
1658#if EV_USE_EPOLL 2845#if EV_USE_EPOLL
1659# include "ev_epoll.c" 2846# include "ev_epoll.c"
1660#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
1661#if EV_USE_POLL 2854#if EV_USE_POLL
1662# include "ev_poll.c" 2855# include "ev_poll.c"
1663#endif 2856#endif
1664#if EV_USE_SELECT 2857#if EV_USE_SELECT
1665# include "ev_select.c" 2858# include "ev_select.c"
1666#endif 2859#endif
1667 2860
1668int ecb_cold 2861ecb_cold int
1669ev_version_major (void) 2862ev_version_major (void) EV_NOEXCEPT
1670{ 2863{
1671 return EV_VERSION_MAJOR; 2864 return EV_VERSION_MAJOR;
1672} 2865}
1673 2866
1674int ecb_cold 2867ecb_cold int
1675ev_version_minor (void) 2868ev_version_minor (void) EV_NOEXCEPT
1676{ 2869{
1677 return EV_VERSION_MINOR; 2870 return EV_VERSION_MINOR;
1678} 2871}
1679 2872
1680/* 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 */
1681int inline_size ecb_cold 2874inline_size ecb_cold int
1682enable_secure (void) 2875enable_secure (void)
1683{ 2876{
1684#ifdef _WIN32 2877#ifdef _WIN32
1685 return 0; 2878 return 0;
1686#else 2879#else
1687 return getuid () != geteuid () 2880 return getuid () != geteuid ()
1688 || getgid () != getegid (); 2881 || getgid () != getegid ();
1689#endif 2882#endif
1690} 2883}
1691 2884
1692unsigned int ecb_cold 2885ecb_cold
2886unsigned int
1693ev_supported_backends (void) 2887ev_supported_backends (void) EV_NOEXCEPT
1694{ 2888{
1695 unsigned int flags = 0; 2889 unsigned int flags = 0;
1696 2890
1697 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2891 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1698 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2892 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
1699 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;
1700 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2896 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1701 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2897 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
1702 2898
1703 return flags; 2899 return flags;
1704} 2900}
1705 2901
1706unsigned int ecb_cold 2902ecb_cold
2903unsigned int
1707ev_recommended_backends (void) 2904ev_recommended_backends (void) EV_NOEXCEPT
1708{ 2905{
1709 unsigned int flags = ev_supported_backends (); 2906 unsigned int flags = ev_supported_backends ();
1710 2907
1711#ifndef __NetBSD__ 2908#ifndef __NetBSD__
1712 /* kqueue is borked on everything but netbsd apparently */ 2909 /* kqueue is borked on everything but netbsd apparently */
… …
1720#endif 2917#endif
1721#ifdef __FreeBSD__ 2918#ifdef __FreeBSD__
1722 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) */
1723#endif 2920#endif
1724 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
1725 return flags; 2931 return flags;
1726} 2932}
1727 2933
1728unsigned int ecb_cold 2934ecb_cold
2935unsigned int
1729ev_embeddable_backends (void) 2936ev_embeddable_backends (void) EV_NOEXCEPT
1730{ 2937{
1731 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2938 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1732 2939
1733 /* 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 */
1734 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 */
1735 flags &= ~EVBACKEND_EPOLL; 2942 flags &= ~EVBACKEND_EPOLL;
1736 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
1737 return flags; 2951 return flags;
1738} 2952}
1739 2953
1740unsigned int 2954unsigned int
1741ev_backend (EV_P) 2955ev_backend (EV_P) EV_NOEXCEPT
1742{ 2956{
1743 return backend; 2957 return backend;
1744} 2958}
1745 2959
1746#if EV_FEATURE_API 2960#if EV_FEATURE_API
1747unsigned int 2961unsigned int
1748ev_iteration (EV_P) 2962ev_iteration (EV_P) EV_NOEXCEPT
1749{ 2963{
1750 return loop_count; 2964 return loop_count;
1751} 2965}
1752 2966
1753unsigned int 2967unsigned int
1754ev_depth (EV_P) 2968ev_depth (EV_P) EV_NOEXCEPT
1755{ 2969{
1756 return loop_depth; 2970 return loop_depth;
1757} 2971}
1758 2972
1759void 2973void
1760ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2974ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1761{ 2975{
1762 io_blocktime = interval; 2976 io_blocktime = interval;
1763} 2977}
1764 2978
1765void 2979void
1766ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2980ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1767{ 2981{
1768 timeout_blocktime = interval; 2982 timeout_blocktime = interval;
1769} 2983}
1770 2984
1771void 2985void
1772ev_set_userdata (EV_P_ void *data) 2986ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
1773{ 2987{
1774 userdata = data; 2988 userdata = data;
1775} 2989}
1776 2990
1777void * 2991void *
1778ev_userdata (EV_P) 2992ev_userdata (EV_P) EV_NOEXCEPT
1779{ 2993{
1780 return userdata; 2994 return userdata;
1781} 2995}
1782 2996
1783void 2997void
1784ev_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
1785{ 2999{
1786 invoke_cb = invoke_pending_cb; 3000 invoke_cb = invoke_pending_cb;
1787} 3001}
1788 3002
1789void 3003void
1790ev_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
1791{ 3005{
1792 release_cb = release; 3006 release_cb = release;
1793 acquire_cb = acquire; 3007 acquire_cb = acquire;
1794} 3008}
1795#endif 3009#endif
1796 3010
1797/* initialise a loop structure, must be zero-initialised */ 3011/* initialise a loop structure, must be zero-initialised */
1798static void noinline ecb_cold 3012ecb_noinline ecb_cold
3013static void
1799loop_init (EV_P_ unsigned int flags) 3014loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
1800{ 3015{
1801 if (!backend) 3016 if (!backend)
1802 { 3017 {
1803 origflags = flags; 3018 origflags = flags;
1804 3019
… …
1849#if EV_ASYNC_ENABLE 3064#if EV_ASYNC_ENABLE
1850 async_pending = 0; 3065 async_pending = 0;
1851#endif 3066#endif
1852 pipe_write_skipped = 0; 3067 pipe_write_skipped = 0;
1853 pipe_write_wanted = 0; 3068 pipe_write_wanted = 0;
3069 evpipe [0] = -1;
3070 evpipe [1] = -1;
1854#if EV_USE_INOTIFY 3071#if EV_USE_INOTIFY
1855 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3072 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1856#endif 3073#endif
1857#if EV_USE_SIGNALFD 3074#if EV_USE_SIGNALFD
1858 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 3075 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
… …
1860 3077
1861 if (!(flags & EVBACKEND_MASK)) 3078 if (!(flags & EVBACKEND_MASK))
1862 flags |= ev_recommended_backends (); 3079 flags |= ev_recommended_backends ();
1863 3080
1864#if EV_USE_IOCP 3081#if EV_USE_IOCP
1865 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 3082 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1866#endif 3083#endif
1867#if EV_USE_PORT 3084#if EV_USE_PORT
1868 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3085 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1869#endif 3086#endif
1870#if EV_USE_KQUEUE 3087#if EV_USE_KQUEUE
1871 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);
1872#endif 3095#endif
1873#if EV_USE_EPOLL 3096#if EV_USE_EPOLL
1874 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3097 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1875#endif 3098#endif
1876#if EV_USE_POLL 3099#if EV_USE_POLL
1877 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3100 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
1878#endif 3101#endif
1879#if EV_USE_SELECT 3102#if EV_USE_SELECT
1880 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3103 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
1881#endif 3104#endif
1882 3105
1883 ev_prepare_init (&pending_w, pendingcb); 3106 ev_prepare_init (&pending_w, pendingcb);
1884 3107
1885#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3108#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
1888#endif 3111#endif
1889 } 3112 }
1890} 3113}
1891 3114
1892/* free up a loop structure */ 3115/* free up a loop structure */
1893void ecb_cold 3116ecb_cold
3117void
1894ev_loop_destroy (EV_P) 3118ev_loop_destroy (EV_P)
1895{ 3119{
1896 int i; 3120 int i;
1897 3121
1898#if EV_MULTIPLICITY 3122#if EV_MULTIPLICITY
… …
1901 return; 3125 return;
1902#endif 3126#endif
1903 3127
1904#if EV_CLEANUP_ENABLE 3128#if EV_CLEANUP_ENABLE
1905 /* queue cleanup watchers (and execute them) */ 3129 /* queue cleanup watchers (and execute them) */
1906 if (expect_false (cleanupcnt)) 3130 if (ecb_expect_false (cleanupcnt))
1907 { 3131 {
1908 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); 3132 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1909 EV_INVOKE_PENDING; 3133 EV_INVOKE_PENDING;
1910 } 3134 }
1911#endif 3135#endif
1912 3136
1913#if EV_CHILD_ENABLE 3137#if EV_CHILD_ENABLE
1914 if (ev_is_active (&childev)) 3138 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
1915 { 3139 {
1916 ev_ref (EV_A); /* child watcher */ 3140 ev_ref (EV_A); /* child watcher */
1917 ev_signal_stop (EV_A_ &childev); 3141 ev_signal_stop (EV_A_ &childev);
1918 } 3142 }
1919#endif 3143#endif
… …
1921 if (ev_is_active (&pipe_w)) 3145 if (ev_is_active (&pipe_w))
1922 { 3146 {
1923 /*ev_ref (EV_A);*/ 3147 /*ev_ref (EV_A);*/
1924 /*ev_io_stop (EV_A_ &pipe_w);*/ 3148 /*ev_io_stop (EV_A_ &pipe_w);*/
1925 3149
1926#if EV_USE_EVENTFD
1927 if (evfd >= 0)
1928 close (evfd);
1929#endif
1930
1931 if (evpipe [0] >= 0)
1932 {
1933 EV_WIN32_CLOSE_FD (evpipe [0]); 3150 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1934 EV_WIN32_CLOSE_FD (evpipe [1]); 3151 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1935 }
1936 } 3152 }
1937 3153
1938#if EV_USE_SIGNALFD 3154#if EV_USE_SIGNALFD
1939 if (ev_is_active (&sigfd_w)) 3155 if (ev_is_active (&sigfd_w))
1940 close (sigfd); 3156 close (sigfd);
… …
1947 3163
1948 if (backend_fd >= 0) 3164 if (backend_fd >= 0)
1949 close (backend_fd); 3165 close (backend_fd);
1950 3166
1951#if EV_USE_IOCP 3167#if EV_USE_IOCP
1952 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3168 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1953#endif 3169#endif
1954#if EV_USE_PORT 3170#if EV_USE_PORT
1955 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3171 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1956#endif 3172#endif
1957#if EV_USE_KQUEUE 3173#if EV_USE_KQUEUE
1958 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);
1959#endif 3181#endif
1960#if EV_USE_EPOLL 3182#if EV_USE_EPOLL
1961 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3183 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1962#endif 3184#endif
1963#if EV_USE_POLL 3185#if EV_USE_POLL
1964 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3186 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1965#endif 3187#endif
1966#if EV_USE_SELECT 3188#if EV_USE_SELECT
1967 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3189 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
1968#endif 3190#endif
1969 3191
1970 for (i = NUMPRI; i--; ) 3192 for (i = NUMPRI; i--; )
1971 { 3193 {
1972 array_free (pending, [i]); 3194 array_free (pending, [i]);
… …
2014 3236
2015inline_size void 3237inline_size void
2016loop_fork (EV_P) 3238loop_fork (EV_P)
2017{ 3239{
2018#if EV_USE_PORT 3240#if EV_USE_PORT
2019 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3241 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
2020#endif 3242#endif
2021#if EV_USE_KQUEUE 3243#if EV_USE_KQUEUE
2022 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);
2023#endif 3251#endif
2024#if EV_USE_EPOLL 3252#if EV_USE_EPOLL
2025 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3253 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
2026#endif 3254#endif
2027#if EV_USE_INOTIFY 3255#if EV_USE_INOTIFY
2028 infy_fork (EV_A); 3256 infy_fork (EV_A);
2029#endif 3257#endif
2030 3258
3259#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2031 if (ev_is_active (&pipe_w)) 3260 if (ev_is_active (&pipe_w) && postfork != 2)
2032 { 3261 {
2033 /* 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 */
2034 3263
2035 ev_ref (EV_A); 3264 ev_ref (EV_A);
2036 ev_io_stop (EV_A_ &pipe_w); 3265 ev_io_stop (EV_A_ &pipe_w);
2037 3266
2038#if EV_USE_EVENTFD
2039 if (evfd >= 0)
2040 close (evfd);
2041#endif
2042
2043 if (evpipe [0] >= 0) 3267 if (evpipe [0] >= 0)
2044 {
2045 EV_WIN32_CLOSE_FD (evpipe [0]); 3268 EV_WIN32_CLOSE_FD (evpipe [0]);
2046 EV_WIN32_CLOSE_FD (evpipe [1]);
2047 }
2048 3269
2049#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2050 evpipe_init (EV_A); 3270 evpipe_init (EV_A);
2051 /* now iterate over everything, in case we missed something */ 3271 /* iterate over everything, in case we missed something before */
2052 pipecb (EV_A_ &pipe_w, EV_READ); 3272 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2053#endif
2054 } 3273 }
3274#endif
2055 3275
2056 postfork = 0; 3276 postfork = 0;
2057} 3277}
2058 3278
2059#if EV_MULTIPLICITY 3279#if EV_MULTIPLICITY
2060 3280
3281ecb_cold
2061struct ev_loop * ecb_cold 3282struct ev_loop *
2062ev_loop_new (unsigned int flags) 3283ev_loop_new (unsigned int flags) EV_NOEXCEPT
2063{ 3284{
2064 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3285 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2065 3286
2066 memset (EV_A, 0, sizeof (struct ev_loop)); 3287 memset (EV_A, 0, sizeof (struct ev_loop));
2067 loop_init (EV_A_ flags); 3288 loop_init (EV_A_ flags);
… …
2074} 3295}
2075 3296
2076#endif /* multiplicity */ 3297#endif /* multiplicity */
2077 3298
2078#if EV_VERIFY 3299#if EV_VERIFY
2079static void noinline ecb_cold 3300ecb_noinline ecb_cold
3301static void
2080verify_watcher (EV_P_ W w) 3302verify_watcher (EV_P_ W w)
2081{ 3303{
2082 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));
2083 3305
2084 if (w->pending) 3306 if (w->pending)
2085 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));
2086} 3308}
2087 3309
2088static void noinline ecb_cold 3310ecb_noinline ecb_cold
3311static void
2089verify_heap (EV_P_ ANHE *heap, int N) 3312verify_heap (EV_P_ ANHE *heap, int N)
2090{ 3313{
2091 int i; 3314 int i;
2092 3315
2093 for (i = HEAP0; i < N + HEAP0; ++i) 3316 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2098 3321
2099 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3322 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2100 } 3323 }
2101} 3324}
2102 3325
2103static void noinline ecb_cold 3326ecb_noinline ecb_cold
3327static void
2104array_verify (EV_P_ W *ws, int cnt) 3328array_verify (EV_P_ W *ws, int cnt)
2105{ 3329{
2106 while (cnt--) 3330 while (cnt--)
2107 { 3331 {
2108 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3332 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2111} 3335}
2112#endif 3336#endif
2113 3337
2114#if EV_FEATURE_API 3338#if EV_FEATURE_API
2115void ecb_cold 3339void ecb_cold
2116ev_verify (EV_P) 3340ev_verify (EV_P) EV_NOEXCEPT
2117{ 3341{
2118#if EV_VERIFY 3342#if EV_VERIFY
2119 int i; 3343 int i;
2120 WL w; 3344 WL w, w2;
2121 3345
2122 assert (activecnt >= -1); 3346 assert (activecnt >= -1);
2123 3347
2124 assert (fdchangemax >= fdchangecnt); 3348 assert (fdchangemax >= fdchangecnt);
2125 for (i = 0; i < fdchangecnt; ++i) 3349 for (i = 0; i < fdchangecnt; ++i)
2126 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3350 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2127 3351
2128 assert (anfdmax >= 0); 3352 assert (anfdmax >= 0);
2129 for (i = 0; i < anfdmax; ++i) 3353 for (i = 0; i < anfdmax; ++i)
3354 {
3355 int j = 0;
3356
2130 for (w = anfds [i].head; w; w = w->next) 3357 for (w = w2 = anfds [i].head; w; w = w->next)
2131 { 3358 {
2132 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
2133 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));
2134 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));
2135 } 3369 }
3370 }
2136 3371
2137 assert (timermax >= timercnt); 3372 assert (timermax >= timercnt);
2138 verify_heap (EV_A_ timers, timercnt); 3373 verify_heap (EV_A_ timers, timercnt);
2139 3374
2140#if EV_PERIODIC_ENABLE 3375#if EV_PERIODIC_ENABLE
… …
2186#endif 3421#endif
2187} 3422}
2188#endif 3423#endif
2189 3424
2190#if EV_MULTIPLICITY 3425#if EV_MULTIPLICITY
3426ecb_cold
2191struct ev_loop * ecb_cold 3427struct ev_loop *
2192#else 3428#else
2193int 3429int
2194#endif 3430#endif
2195ev_default_loop (unsigned int flags) 3431ev_default_loop (unsigned int flags) EV_NOEXCEPT
2196{ 3432{
2197 if (!ev_default_loop_ptr) 3433 if (!ev_default_loop_ptr)
2198 { 3434 {
2199#if EV_MULTIPLICITY 3435#if EV_MULTIPLICITY
2200 EV_P = ev_default_loop_ptr = &default_loop_struct; 3436 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2219 3455
2220 return ev_default_loop_ptr; 3456 return ev_default_loop_ptr;
2221} 3457}
2222 3458
2223void 3459void
2224ev_loop_fork (EV_P) 3460ev_loop_fork (EV_P) EV_NOEXCEPT
2225{ 3461{
2226 postfork = 1; /* must be in line with ev_default_fork */ 3462 postfork = 1;
2227} 3463}
2228 3464
2229/*****************************************************************************/ 3465/*****************************************************************************/
2230 3466
2231void 3467void
… …
2233{ 3469{
2234 EV_CB_INVOKE ((W)w, revents); 3470 EV_CB_INVOKE ((W)w, revents);
2235} 3471}
2236 3472
2237unsigned int 3473unsigned int
2238ev_pending_count (EV_P) 3474ev_pending_count (EV_P) EV_NOEXCEPT
2239{ 3475{
2240 int pri; 3476 int pri;
2241 unsigned int count = 0; 3477 unsigned int count = 0;
2242 3478
2243 for (pri = NUMPRI; pri--; ) 3479 for (pri = NUMPRI; pri--; )
2244 count += pendingcnt [pri]; 3480 count += pendingcnt [pri];
2245 3481
2246 return count; 3482 return count;
2247} 3483}
2248 3484
2249void noinline 3485ecb_noinline
3486void
2250ev_invoke_pending (EV_P) 3487ev_invoke_pending (EV_P)
2251{ 3488{
2252 int pri; 3489 pendingpri = NUMPRI;
2253 3490
2254 for (pri = NUMPRI; pri--; ) 3491 do
3492 {
3493 --pendingpri;
3494
3495 /* pendingpri possibly gets modified in the inner loop */
2255 while (pendingcnt [pri]) 3496 while (pendingcnt [pendingpri])
2256 { 3497 {
2257 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3498 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2258 3499
2259 p->w->pending = 0; 3500 p->w->pending = 0;
2260 EV_CB_INVOKE (p->w, p->events); 3501 EV_CB_INVOKE (p->w, p->events);
2261 EV_FREQUENT_CHECK; 3502 EV_FREQUENT_CHECK;
2262 } 3503 }
3504 }
3505 while (pendingpri);
2263} 3506}
2264 3507
2265#if EV_IDLE_ENABLE 3508#if EV_IDLE_ENABLE
2266/* make idle watchers pending. this handles the "call-idle */ 3509/* make idle watchers pending. this handles the "call-idle */
2267/* only when higher priorities are idle" logic */ 3510/* only when higher priorities are idle" logic */
2268inline_size void 3511inline_size void
2269idle_reify (EV_P) 3512idle_reify (EV_P)
2270{ 3513{
2271 if (expect_false (idleall)) 3514 if (ecb_expect_false (idleall))
2272 { 3515 {
2273 int pri; 3516 int pri;
2274 3517
2275 for (pri = NUMPRI; pri--; ) 3518 for (pri = NUMPRI; pri--; )
2276 { 3519 {
… …
2306 { 3549 {
2307 ev_at (w) += w->repeat; 3550 ev_at (w) += w->repeat;
2308 if (ev_at (w) < mn_now) 3551 if (ev_at (w) < mn_now)
2309 ev_at (w) = mn_now; 3552 ev_at (w) = mn_now;
2310 3553
2311 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.)));
2312 3555
2313 ANHE_at_cache (timers [HEAP0]); 3556 ANHE_at_cache (timers [HEAP0]);
2314 downheap (timers, timercnt, HEAP0); 3557 downheap (timers, timercnt, HEAP0);
2315 } 3558 }
2316 else 3559 else
… …
2325 } 3568 }
2326} 3569}
2327 3570
2328#if EV_PERIODIC_ENABLE 3571#if EV_PERIODIC_ENABLE
2329 3572
2330static void noinline 3573ecb_noinline
3574static void
2331periodic_recalc (EV_P_ ev_periodic *w) 3575periodic_recalc (EV_P_ ev_periodic *w)
2332{ 3576{
2333 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3577 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2334 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);
2335 3579
… …
2337 while (at <= ev_rt_now) 3581 while (at <= ev_rt_now)
2338 { 3582 {
2339 ev_tstamp nat = at + w->interval; 3583 ev_tstamp nat = at + w->interval;
2340 3584
2341 /* when resolution fails us, we use ev_rt_now */ 3585 /* when resolution fails us, we use ev_rt_now */
2342 if (expect_false (nat == at)) 3586 if (ecb_expect_false (nat == at))
2343 { 3587 {
2344 at = ev_rt_now; 3588 at = ev_rt_now;
2345 break; 3589 break;
2346 } 3590 }
2347 3591
… …
2357{ 3601{
2358 EV_FREQUENT_CHECK; 3602 EV_FREQUENT_CHECK;
2359 3603
2360 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3604 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2361 { 3605 {
2362 int feed_count = 0;
2363
2364 do 3606 do
2365 { 3607 {
2366 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3608 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2367 3609
2368 /*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)));*/
… …
2395 } 3637 }
2396} 3638}
2397 3639
2398/* simply recalculate all periodics */ 3640/* simply recalculate all periodics */
2399/* 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? */
2400static void noinline ecb_cold 3642ecb_noinline ecb_cold
3643static void
2401periodics_reschedule (EV_P) 3644periodics_reschedule (EV_P)
2402{ 3645{
2403 int i; 3646 int i;
2404 3647
2405 /* adjust periodics after time jump */ 3648 /* adjust periodics after time jump */
… …
2418 reheap (periodics, periodiccnt); 3661 reheap (periodics, periodiccnt);
2419} 3662}
2420#endif 3663#endif
2421 3664
2422/* adjust all timers by a given offset */ 3665/* adjust all timers by a given offset */
2423static void noinline ecb_cold 3666ecb_noinline ecb_cold
3667static void
2424timers_reschedule (EV_P_ ev_tstamp adjust) 3668timers_reschedule (EV_P_ ev_tstamp adjust)
2425{ 3669{
2426 int i; 3670 int i;
2427 3671
2428 for (i = 0; i < timercnt; ++i) 3672 for (i = 0; i < timercnt; ++i)
… …
2437/* also detect if there was a timejump, and act accordingly */ 3681/* also detect if there was a timejump, and act accordingly */
2438inline_speed void 3682inline_speed void
2439time_update (EV_P_ ev_tstamp max_block) 3683time_update (EV_P_ ev_tstamp max_block)
2440{ 3684{
2441#if EV_USE_MONOTONIC 3685#if EV_USE_MONOTONIC
2442 if (expect_true (have_monotonic)) 3686 if (ecb_expect_true (have_monotonic))
2443 { 3687 {
2444 int i; 3688 int i;
2445 ev_tstamp odiff = rtmn_diff; 3689 ev_tstamp odiff = rtmn_diff;
2446 3690
2447 mn_now = get_clock (); 3691 mn_now = get_clock ();
2448 3692
2449 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3693 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2450 /* interpolate in the meantime */ 3694 /* interpolate in the meantime */
2451 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)))
2452 { 3696 {
2453 ev_rt_now = rtmn_diff + mn_now; 3697 ev_rt_now = rtmn_diff + mn_now;
2454 return; 3698 return;
2455 } 3699 }
2456 3700
… …
2470 ev_tstamp diff; 3714 ev_tstamp diff;
2471 rtmn_diff = ev_rt_now - mn_now; 3715 rtmn_diff = ev_rt_now - mn_now;
2472 3716
2473 diff = odiff - rtmn_diff; 3717 diff = odiff - rtmn_diff;
2474 3718
2475 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)))
2476 return; /* all is well */ 3720 return; /* all is well */
2477 3721
2478 ev_rt_now = ev_time (); 3722 ev_rt_now = ev_time ();
2479 mn_now = get_clock (); 3723 mn_now = get_clock ();
2480 now_floor = mn_now; 3724 now_floor = mn_now;
… …
2489 else 3733 else
2490#endif 3734#endif
2491 { 3735 {
2492 ev_rt_now = ev_time (); 3736 ev_rt_now = ev_time ();
2493 3737
2494 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)))
2495 { 3739 {
2496 /* 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 */
2497 timers_reschedule (EV_A_ ev_rt_now - mn_now); 3741 timers_reschedule (EV_A_ ev_rt_now - mn_now);
2498#if EV_PERIODIC_ENABLE 3742#if EV_PERIODIC_ENABLE
2499 periodics_reschedule (EV_A); 3743 periodics_reschedule (EV_A);
… …
2502 3746
2503 mn_now = ev_rt_now; 3747 mn_now = ev_rt_now;
2504 } 3748 }
2505} 3749}
2506 3750
2507void 3751int
2508ev_run (EV_P_ int flags) 3752ev_run (EV_P_ int flags)
2509{ 3753{
2510#if EV_FEATURE_API 3754#if EV_FEATURE_API
2511 ++loop_depth; 3755 ++loop_depth;
2512#endif 3756#endif
… …
2522#if EV_VERIFY >= 2 3766#if EV_VERIFY >= 2
2523 ev_verify (EV_A); 3767 ev_verify (EV_A);
2524#endif 3768#endif
2525 3769
2526#ifndef _WIN32 3770#ifndef _WIN32
2527 if (expect_false (curpid)) /* penalise the forking check even more */ 3771 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
2528 if (expect_false (getpid () != curpid)) 3772 if (ecb_expect_false (getpid () != curpid))
2529 { 3773 {
2530 curpid = getpid (); 3774 curpid = getpid ();
2531 postfork = 1; 3775 postfork = 1;
2532 } 3776 }
2533#endif 3777#endif
2534 3778
2535#if EV_FORK_ENABLE 3779#if EV_FORK_ENABLE
2536 /* we might have forked, so queue fork handlers */ 3780 /* we might have forked, so queue fork handlers */
2537 if (expect_false (postfork)) 3781 if (ecb_expect_false (postfork))
2538 if (forkcnt) 3782 if (forkcnt)
2539 { 3783 {
2540 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3784 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2541 EV_INVOKE_PENDING; 3785 EV_INVOKE_PENDING;
2542 } 3786 }
2543#endif 3787#endif
2544 3788
2545#if EV_PREPARE_ENABLE 3789#if EV_PREPARE_ENABLE
2546 /* queue prepare watchers (and execute them) */ 3790 /* queue prepare watchers (and execute them) */
2547 if (expect_false (preparecnt)) 3791 if (ecb_expect_false (preparecnt))
2548 { 3792 {
2549 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3793 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2550 EV_INVOKE_PENDING; 3794 EV_INVOKE_PENDING;
2551 } 3795 }
2552#endif 3796#endif
2553 3797
2554 if (expect_false (loop_done)) 3798 if (ecb_expect_false (loop_done))
2555 break; 3799 break;
2556 3800
2557 /* we might have forked, so reify kernel state if necessary */ 3801 /* we might have forked, so reify kernel state if necessary */
2558 if (expect_false (postfork)) 3802 if (ecb_expect_false (postfork))
2559 loop_fork (EV_A); 3803 loop_fork (EV_A);
2560 3804
2561 /* update fd-related kernel structures */ 3805 /* update fd-related kernel structures */
2562 fd_reify (EV_A); 3806 fd_reify (EV_A);
2563 3807
… …
2568 3812
2569 /* remember old timestamp for io_blocktime calculation */ 3813 /* remember old timestamp for io_blocktime calculation */
2570 ev_tstamp prev_mn_now = mn_now; 3814 ev_tstamp prev_mn_now = mn_now;
2571 3815
2572 /* update time to cancel out callback processing overhead */ 3816 /* update time to cancel out callback processing overhead */
2573 time_update (EV_A_ 1e100); 3817 time_update (EV_A_ EV_TS_CONST (EV_TSTAMP_HUGE));
2574 3818
2575 /* from now on, we want a pipe-wake-up */ 3819 /* from now on, we want a pipe-wake-up */
2576 pipe_write_wanted = 1; 3820 pipe_write_wanted = 1;
2577 3821
3822 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3823
2578 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) 3824 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2579 { 3825 {
2580 waittime = MAX_BLOCKTIME; 3826 waittime = EV_TS_CONST (MAX_BLOCKTIME);
2581 3827
2582 if (timercnt) 3828 if (timercnt)
2583 { 3829 {
2584 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now; 3830 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2585 if (waittime > to) waittime = to; 3831 if (waittime > to) waittime = to;
… …
2592 if (waittime > to) waittime = to; 3838 if (waittime > to) waittime = to;
2593 } 3839 }
2594#endif 3840#endif
2595 3841
2596 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3842 /* don't let timeouts decrease the waittime below timeout_blocktime */
2597 if (expect_false (waittime < timeout_blocktime)) 3843 if (ecb_expect_false (waittime < timeout_blocktime))
2598 waittime = timeout_blocktime; 3844 waittime = timeout_blocktime;
2599 3845
2600 /* 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 */
2601 /* to pass a minimum nonzero value to the backend */ 3847 /* to pass a minimum nonzero value to the backend */
2602 if (expect_false (waittime < backend_mintime)) 3848 if (ecb_expect_false (waittime < backend_mintime))
2603 waittime = backend_mintime; 3849 waittime = backend_mintime;
2604 3850
2605 /* extra check because io_blocktime is commonly 0 */ 3851 /* extra check because io_blocktime is commonly 0 */
2606 if (expect_false (io_blocktime)) 3852 if (ecb_expect_false (io_blocktime))
2607 { 3853 {
2608 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3854 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2609 3855
2610 if (sleeptime > waittime - backend_mintime) 3856 if (sleeptime > waittime - backend_mintime)
2611 sleeptime = waittime - backend_mintime; 3857 sleeptime = waittime - backend_mintime;
2612 3858
2613 if (expect_true (sleeptime > 0.)) 3859 if (ecb_expect_true (sleeptime > EV_TS_CONST (0.)))
2614 { 3860 {
2615 ev_sleep (sleeptime); 3861 ev_sleep (sleeptime);
2616 waittime -= sleeptime; 3862 waittime -= sleeptime;
2617 } 3863 }
2618 } 3864 }
… …
2623#endif 3869#endif
2624 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ 3870 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2625 backend_poll (EV_A_ waittime); 3871 backend_poll (EV_A_ waittime);
2626 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3872 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2627 3873
2628 pipe_write_wanted = 0; 3874 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
2629 3875
3876 ECB_MEMORY_FENCE_ACQUIRE;
2630 if (pipe_write_skipped) 3877 if (pipe_write_skipped)
2631 { 3878 {
2632 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)));
2633 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3880 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2634 } 3881 }
2635 3882
2636
2637 /* update ev_rt_now, do magic */ 3883 /* update ev_rt_now, do magic */
2638 time_update (EV_A_ waittime + sleeptime); 3884 time_update (EV_A_ waittime + sleeptime);
2639 } 3885 }
2640 3886
2641 /* queue pending timers and reschedule them */ 3887 /* queue pending timers and reschedule them */
… …
2649 idle_reify (EV_A); 3895 idle_reify (EV_A);
2650#endif 3896#endif
2651 3897
2652#if EV_CHECK_ENABLE 3898#if EV_CHECK_ENABLE
2653 /* queue check watchers, to be executed first */ 3899 /* queue check watchers, to be executed first */
2654 if (expect_false (checkcnt)) 3900 if (ecb_expect_false (checkcnt))
2655 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3901 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2656#endif 3902#endif
2657 3903
2658 EV_INVOKE_PENDING; 3904 EV_INVOKE_PENDING;
2659 } 3905 }
2660 while (expect_true ( 3906 while (ecb_expect_true (
2661 activecnt 3907 activecnt
2662 && !loop_done 3908 && !loop_done
2663 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) 3909 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2664 )); 3910 ));
2665 3911
… …
2667 loop_done = EVBREAK_CANCEL; 3913 loop_done = EVBREAK_CANCEL;
2668 3914
2669#if EV_FEATURE_API 3915#if EV_FEATURE_API
2670 --loop_depth; 3916 --loop_depth;
2671#endif 3917#endif
2672}
2673 3918
3919 return activecnt;
3920}
3921
2674void 3922void
2675ev_break (EV_P_ int how) 3923ev_break (EV_P_ int how) EV_NOEXCEPT
2676{ 3924{
2677 loop_done = how; 3925 loop_done = how;
2678} 3926}
2679 3927
2680void 3928void
2681ev_ref (EV_P) 3929ev_ref (EV_P) EV_NOEXCEPT
2682{ 3930{
2683 ++activecnt; 3931 ++activecnt;
2684} 3932}
2685 3933
2686void 3934void
2687ev_unref (EV_P) 3935ev_unref (EV_P) EV_NOEXCEPT
2688{ 3936{
2689 --activecnt; 3937 --activecnt;
2690} 3938}
2691 3939
2692void 3940void
2693ev_now_update (EV_P) 3941ev_now_update (EV_P) EV_NOEXCEPT
2694{ 3942{
2695 time_update (EV_A_ 1e100); 3943 time_update (EV_A_ EV_TSTAMP_HUGE);
2696} 3944}
2697 3945
2698void 3946void
2699ev_suspend (EV_P) 3947ev_suspend (EV_P) EV_NOEXCEPT
2700{ 3948{
2701 ev_now_update (EV_A); 3949 ev_now_update (EV_A);
2702} 3950}
2703 3951
2704void 3952void
2705ev_resume (EV_P) 3953ev_resume (EV_P) EV_NOEXCEPT
2706{ 3954{
2707 ev_tstamp mn_prev = mn_now; 3955 ev_tstamp mn_prev = mn_now;
2708 3956
2709 ev_now_update (EV_A); 3957 ev_now_update (EV_A);
2710 timers_reschedule (EV_A_ mn_now - mn_prev); 3958 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2727inline_size void 3975inline_size void
2728wlist_del (WL *head, WL elem) 3976wlist_del (WL *head, WL elem)
2729{ 3977{
2730 while (*head) 3978 while (*head)
2731 { 3979 {
2732 if (expect_true (*head == elem)) 3980 if (ecb_expect_true (*head == elem))
2733 { 3981 {
2734 *head = elem->next; 3982 *head = elem->next;
2735 break; 3983 break;
2736 } 3984 }
2737 3985
… …
2749 w->pending = 0; 3997 w->pending = 0;
2750 } 3998 }
2751} 3999}
2752 4000
2753int 4001int
2754ev_clear_pending (EV_P_ void *w) 4002ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
2755{ 4003{
2756 W w_ = (W)w; 4004 W w_ = (W)w;
2757 int pending = w_->pending; 4005 int pending = w_->pending;
2758 4006
2759 if (expect_true (pending)) 4007 if (ecb_expect_true (pending))
2760 { 4008 {
2761 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4009 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2762 p->w = (W)&pending_w; 4010 p->w = (W)&pending_w;
2763 w_->pending = 0; 4011 w_->pending = 0;
2764 return p->events; 4012 return p->events;
… …
2791 w->active = 0; 4039 w->active = 0;
2792} 4040}
2793 4041
2794/*****************************************************************************/ 4042/*****************************************************************************/
2795 4043
2796void noinline 4044ecb_noinline
4045void
2797ev_io_start (EV_P_ ev_io *w) 4046ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
2798{ 4047{
2799 int fd = w->fd; 4048 int fd = w->fd;
2800 4049
2801 if (expect_false (ev_is_active (w))) 4050 if (ecb_expect_false (ev_is_active (w)))
2802 return; 4051 return;
2803 4052
2804 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4053 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2805 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))));
2806 4055
4056#if EV_VERIFY >= 2
4057 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4058#endif
2807 EV_FREQUENT_CHECK; 4059 EV_FREQUENT_CHECK;
2808 4060
2809 ev_start (EV_A_ (W)w, 1); 4061 ev_start (EV_A_ (W)w, 1);
2810 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4062 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
2811 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));
2812 4067
2813 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);
2814 w->events &= ~EV__IOFDSET; 4069 w->events &= ~EV__IOFDSET;
2815 4070
2816 EV_FREQUENT_CHECK; 4071 EV_FREQUENT_CHECK;
2817} 4072}
2818 4073
2819void noinline 4074ecb_noinline
4075void
2820ev_io_stop (EV_P_ ev_io *w) 4076ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
2821{ 4077{
2822 clear_pending (EV_A_ (W)w); 4078 clear_pending (EV_A_ (W)w);
2823 if (expect_false (!ev_is_active (w))) 4079 if (ecb_expect_false (!ev_is_active (w)))
2824 return; 4080 return;
2825 4081
2826 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));
2827 4083
4084#if EV_VERIFY >= 2
4085 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4086#endif
2828 EV_FREQUENT_CHECK; 4087 EV_FREQUENT_CHECK;
2829 4088
2830 wlist_del (&anfds[w->fd].head, (WL)w); 4089 wlist_del (&anfds[w->fd].head, (WL)w);
2831 ev_stop (EV_A_ (W)w); 4090 ev_stop (EV_A_ (W)w);
2832 4091
2833 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 4092 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2834 4093
2835 EV_FREQUENT_CHECK; 4094 EV_FREQUENT_CHECK;
2836} 4095}
2837 4096
2838void noinline 4097ecb_noinline
4098void
2839ev_timer_start (EV_P_ ev_timer *w) 4099ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
2840{ 4100{
2841 if (expect_false (ev_is_active (w))) 4101 if (ecb_expect_false (ev_is_active (w)))
2842 return; 4102 return;
2843 4103
2844 ev_at (w) += mn_now; 4104 ev_at (w) += mn_now;
2845 4105
2846 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.));
2847 4107
2848 EV_FREQUENT_CHECK; 4108 EV_FREQUENT_CHECK;
2849 4109
2850 ++timercnt; 4110 ++timercnt;
2851 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4111 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2852 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4112 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
2853 ANHE_w (timers [ev_active (w)]) = (WT)w; 4113 ANHE_w (timers [ev_active (w)]) = (WT)w;
2854 ANHE_at_cache (timers [ev_active (w)]); 4114 ANHE_at_cache (timers [ev_active (w)]);
2855 upheap (timers, ev_active (w)); 4115 upheap (timers, ev_active (w));
2856 4116
2857 EV_FREQUENT_CHECK; 4117 EV_FREQUENT_CHECK;
2858 4118
2859 /*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));*/
2860} 4120}
2861 4121
2862void noinline 4122ecb_noinline
4123void
2863ev_timer_stop (EV_P_ ev_timer *w) 4124ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
2864{ 4125{
2865 clear_pending (EV_A_ (W)w); 4126 clear_pending (EV_A_ (W)w);
2866 if (expect_false (!ev_is_active (w))) 4127 if (ecb_expect_false (!ev_is_active (w)))
2867 return; 4128 return;
2868 4129
2869 EV_FREQUENT_CHECK; 4130 EV_FREQUENT_CHECK;
2870 4131
2871 { 4132 {
… …
2873 4134
2874 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));
2875 4136
2876 --timercnt; 4137 --timercnt;
2877 4138
2878 if (expect_true (active < timercnt + HEAP0)) 4139 if (ecb_expect_true (active < timercnt + HEAP0))
2879 { 4140 {
2880 timers [active] = timers [timercnt + HEAP0]; 4141 timers [active] = timers [timercnt + HEAP0];
2881 adjustheap (timers, timercnt, active); 4142 adjustheap (timers, timercnt, active);
2882 } 4143 }
2883 } 4144 }
… …
2887 ev_stop (EV_A_ (W)w); 4148 ev_stop (EV_A_ (W)w);
2888 4149
2889 EV_FREQUENT_CHECK; 4150 EV_FREQUENT_CHECK;
2890} 4151}
2891 4152
2892void noinline 4153ecb_noinline
4154void
2893ev_timer_again (EV_P_ ev_timer *w) 4155ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
2894{ 4156{
2895 EV_FREQUENT_CHECK; 4157 EV_FREQUENT_CHECK;
4158
4159 clear_pending (EV_A_ (W)w);
2896 4160
2897 if (ev_is_active (w)) 4161 if (ev_is_active (w))
2898 { 4162 {
2899 if (w->repeat) 4163 if (w->repeat)
2900 { 4164 {
… …
2913 4177
2914 EV_FREQUENT_CHECK; 4178 EV_FREQUENT_CHECK;
2915} 4179}
2916 4180
2917ev_tstamp 4181ev_tstamp
2918ev_timer_remaining (EV_P_ ev_timer *w) 4182ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
2919{ 4183{
2920 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.));
2921} 4185}
2922 4186
2923#if EV_PERIODIC_ENABLE 4187#if EV_PERIODIC_ENABLE
2924void noinline 4188ecb_noinline
4189void
2925ev_periodic_start (EV_P_ ev_periodic *w) 4190ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
2926{ 4191{
2927 if (expect_false (ev_is_active (w))) 4192 if (ecb_expect_false (ev_is_active (w)))
2928 return; 4193 return;
2929 4194
2930 if (w->reschedule_cb) 4195 if (w->reschedule_cb)
2931 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4196 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2932 else if (w->interval) 4197 else if (w->interval)
… …
2939 4204
2940 EV_FREQUENT_CHECK; 4205 EV_FREQUENT_CHECK;
2941 4206
2942 ++periodiccnt; 4207 ++periodiccnt;
2943 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4208 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2944 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4209 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
2945 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4210 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2946 ANHE_at_cache (periodics [ev_active (w)]); 4211 ANHE_at_cache (periodics [ev_active (w)]);
2947 upheap (periodics, ev_active (w)); 4212 upheap (periodics, ev_active (w));
2948 4213
2949 EV_FREQUENT_CHECK; 4214 EV_FREQUENT_CHECK;
2950 4215
2951 /*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));*/
2952} 4217}
2953 4218
2954void noinline 4219ecb_noinline
4220void
2955ev_periodic_stop (EV_P_ ev_periodic *w) 4221ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
2956{ 4222{
2957 clear_pending (EV_A_ (W)w); 4223 clear_pending (EV_A_ (W)w);
2958 if (expect_false (!ev_is_active (w))) 4224 if (ecb_expect_false (!ev_is_active (w)))
2959 return; 4225 return;
2960 4226
2961 EV_FREQUENT_CHECK; 4227 EV_FREQUENT_CHECK;
2962 4228
2963 { 4229 {
… …
2965 4231
2966 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));
2967 4233
2968 --periodiccnt; 4234 --periodiccnt;
2969 4235
2970 if (expect_true (active < periodiccnt + HEAP0)) 4236 if (ecb_expect_true (active < periodiccnt + HEAP0))
2971 { 4237 {
2972 periodics [active] = periodics [periodiccnt + HEAP0]; 4238 periodics [active] = periodics [periodiccnt + HEAP0];
2973 adjustheap (periodics, periodiccnt, active); 4239 adjustheap (periodics, periodiccnt, active);
2974 } 4240 }
2975 } 4241 }
… …
2977 ev_stop (EV_A_ (W)w); 4243 ev_stop (EV_A_ (W)w);
2978 4244
2979 EV_FREQUENT_CHECK; 4245 EV_FREQUENT_CHECK;
2980} 4246}
2981 4247
2982void noinline 4248ecb_noinline
4249void
2983ev_periodic_again (EV_P_ ev_periodic *w) 4250ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
2984{ 4251{
2985 /* TODO: use adjustheap and recalculation */ 4252 /* TODO: use adjustheap and recalculation */
2986 ev_periodic_stop (EV_A_ w); 4253 ev_periodic_stop (EV_A_ w);
2987 ev_periodic_start (EV_A_ w); 4254 ev_periodic_start (EV_A_ w);
2988} 4255}
… …
2992# define SA_RESTART 0 4259# define SA_RESTART 0
2993#endif 4260#endif
2994 4261
2995#if EV_SIGNAL_ENABLE 4262#if EV_SIGNAL_ENABLE
2996 4263
2997void noinline 4264ecb_noinline
4265void
2998ev_signal_start (EV_P_ ev_signal *w) 4266ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
2999{ 4267{
3000 if (expect_false (ev_is_active (w))) 4268 if (ecb_expect_false (ev_is_active (w)))
3001 return; 4269 return;
3002 4270
3003 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));
3004 4272
3005#if EV_MULTIPLICITY 4273#if EV_MULTIPLICITY
3006 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",
3007 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4275 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3008 4276
3009 signals [w->signum - 1].loop = EV_A; 4277 signals [w->signum - 1].loop = EV_A;
4278 ECB_MEMORY_FENCE_RELEASE;
3010#endif 4279#endif
3011 4280
3012 EV_FREQUENT_CHECK; 4281 EV_FREQUENT_CHECK;
3013 4282
3014#if EV_USE_SIGNALFD 4283#if EV_USE_SIGNALFD
… …
3073 } 4342 }
3074 4343
3075 EV_FREQUENT_CHECK; 4344 EV_FREQUENT_CHECK;
3076} 4345}
3077 4346
3078void noinline 4347ecb_noinline
4348void
3079ev_signal_stop (EV_P_ ev_signal *w) 4349ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
3080{ 4350{
3081 clear_pending (EV_A_ (W)w); 4351 clear_pending (EV_A_ (W)w);
3082 if (expect_false (!ev_is_active (w))) 4352 if (ecb_expect_false (!ev_is_active (w)))
3083 return; 4353 return;
3084 4354
3085 EV_FREQUENT_CHECK; 4355 EV_FREQUENT_CHECK;
3086 4356
3087 wlist_del (&signals [w->signum - 1].head, (WL)w); 4357 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
3115#endif 4385#endif
3116 4386
3117#if EV_CHILD_ENABLE 4387#if EV_CHILD_ENABLE
3118 4388
3119void 4389void
3120ev_child_start (EV_P_ ev_child *w) 4390ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
3121{ 4391{
3122#if EV_MULTIPLICITY 4392#if EV_MULTIPLICITY
3123 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));
3124#endif 4394#endif
3125 if (expect_false (ev_is_active (w))) 4395 if (ecb_expect_false (ev_is_active (w)))
3126 return; 4396 return;
3127 4397
3128 EV_FREQUENT_CHECK; 4398 EV_FREQUENT_CHECK;
3129 4399
3130 ev_start (EV_A_ (W)w, 1); 4400 ev_start (EV_A_ (W)w, 1);
… …
3132 4402
3133 EV_FREQUENT_CHECK; 4403 EV_FREQUENT_CHECK;
3134} 4404}
3135 4405
3136void 4406void
3137ev_child_stop (EV_P_ ev_child *w) 4407ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
3138{ 4408{
3139 clear_pending (EV_A_ (W)w); 4409 clear_pending (EV_A_ (W)w);
3140 if (expect_false (!ev_is_active (w))) 4410 if (ecb_expect_false (!ev_is_active (w)))
3141 return; 4411 return;
3142 4412
3143 EV_FREQUENT_CHECK; 4413 EV_FREQUENT_CHECK;
3144 4414
3145 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); 4415 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
… …
3159 4429
3160#define DEF_STAT_INTERVAL 5.0074891 4430#define DEF_STAT_INTERVAL 5.0074891
3161#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4431#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3162#define MIN_STAT_INTERVAL 0.1074891 4432#define MIN_STAT_INTERVAL 0.1074891
3163 4433
3164static 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);
3165 4435
3166#if EV_USE_INOTIFY 4436#if EV_USE_INOTIFY
3167 4437
3168/* 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 */
3169# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4439# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3170 4440
3171static void noinline 4441ecb_noinline
4442static void
3172infy_add (EV_P_ ev_stat *w) 4443infy_add (EV_P_ ev_stat *w)
3173{ 4444{
3174 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);
3175 4449
3176 if (w->wd >= 0) 4450 if (w->wd >= 0)
3177 { 4451 {
3178 struct statfs sfs; 4452 struct statfs sfs;
3179 4453
… …
3183 4457
3184 if (!fs_2625) 4458 if (!fs_2625)
3185 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4459 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3186 else if (!statfs (w->path, &sfs) 4460 else if (!statfs (w->path, &sfs)
3187 && (sfs.f_type == 0x1373 /* devfs */ 4461 && (sfs.f_type == 0x1373 /* devfs */
4462 || sfs.f_type == 0x4006 /* fat */
4463 || sfs.f_type == 0x4d44 /* msdos */
3188 || 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 */
3189 || sfs.f_type == 0x3153464a /* jfs */ 4468 || sfs.f_type == 0x3153464a /* jfs */
4469 || sfs.f_type == 0x9123683e /* btrfs */
3190 || sfs.f_type == 0x52654973 /* reiser3 */ 4470 || sfs.f_type == 0x52654973 /* reiser3 */
3191 || sfs.f_type == 0x01021994 /* tempfs */ 4471 || sfs.f_type == 0x01021994 /* tmpfs */
3192 || sfs.f_type == 0x58465342 /* xfs */)) 4472 || sfs.f_type == 0x58465342 /* xfs */))
3193 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4473 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3194 else 4474 else
3195 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 */
3196 } 4476 }
… …
3231 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4511 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3232 ev_timer_again (EV_A_ &w->timer); 4512 ev_timer_again (EV_A_ &w->timer);
3233 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4513 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3234} 4514}
3235 4515
3236static void noinline 4516ecb_noinline
4517static void
3237infy_del (EV_P_ ev_stat *w) 4518infy_del (EV_P_ ev_stat *w)
3238{ 4519{
3239 int slot; 4520 int slot;
3240 int wd = w->wd; 4521 int wd = w->wd;
3241 4522
… …
3248 4529
3249 /* remove this watcher, if others are watching it, they will rearm */ 4530 /* remove this watcher, if others are watching it, they will rearm */
3250 inotify_rm_watch (fs_fd, wd); 4531 inotify_rm_watch (fs_fd, wd);
3251} 4532}
3252 4533
3253static void noinline 4534ecb_noinline
4535static void
3254infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4536infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3255{ 4537{
3256 if (slot < 0) 4538 if (slot < 0)
3257 /* overflow, need to check for all hash slots */ 4539 /* overflow, need to check for all hash slots */
3258 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4540 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3294 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4576 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3295 ofs += sizeof (struct inotify_event) + ev->len; 4577 ofs += sizeof (struct inotify_event) + ev->len;
3296 } 4578 }
3297} 4579}
3298 4580
3299inline_size void ecb_cold 4581inline_size ecb_cold
4582void
3300ev_check_2625 (EV_P) 4583ev_check_2625 (EV_P)
3301{ 4584{
3302 /* kernels < 2.6.25 are borked 4585 /* kernels < 2.6.25 are borked
3303 * 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
3304 */ 4587 */
… …
3309} 4592}
3310 4593
3311inline_size int 4594inline_size int
3312infy_newfd (void) 4595infy_newfd (void)
3313{ 4596{
3314#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4597#if defined IN_CLOEXEC && defined IN_NONBLOCK
3315 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4598 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3316 if (fd >= 0) 4599 if (fd >= 0)
3317 return fd; 4600 return fd;
3318#endif 4601#endif
3319 return inotify_init (); 4602 return inotify_init ();
… …
3394#else 4677#else
3395# define EV_LSTAT(p,b) lstat (p, b) 4678# define EV_LSTAT(p,b) lstat (p, b)
3396#endif 4679#endif
3397 4680
3398void 4681void
3399ev_stat_stat (EV_P_ ev_stat *w) 4682ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3400{ 4683{
3401 if (lstat (w->path, &w->attr) < 0) 4684 if (lstat (w->path, &w->attr) < 0)
3402 w->attr.st_nlink = 0; 4685 w->attr.st_nlink = 0;
3403 else if (!w->attr.st_nlink) 4686 else if (!w->attr.st_nlink)
3404 w->attr.st_nlink = 1; 4687 w->attr.st_nlink = 1;
3405} 4688}
3406 4689
3407static void noinline 4690ecb_noinline
4691static void
3408stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4692stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3409{ 4693{
3410 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4694 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3411 4695
3412 ev_statdata prev = w->attr; 4696 ev_statdata prev = w->attr;
… …
3443 ev_feed_event (EV_A_ w, EV_STAT); 4727 ev_feed_event (EV_A_ w, EV_STAT);
3444 } 4728 }
3445} 4729}
3446 4730
3447void 4731void
3448ev_stat_start (EV_P_ ev_stat *w) 4732ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3449{ 4733{
3450 if (expect_false (ev_is_active (w))) 4734 if (ecb_expect_false (ev_is_active (w)))
3451 return; 4735 return;
3452 4736
3453 ev_stat_stat (EV_A_ w); 4737 ev_stat_stat (EV_A_ w);
3454 4738
3455 if (w->interval < MIN_STAT_INTERVAL && w->interval) 4739 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
3474 4758
3475 EV_FREQUENT_CHECK; 4759 EV_FREQUENT_CHECK;
3476} 4760}
3477 4761
3478void 4762void
3479ev_stat_stop (EV_P_ ev_stat *w) 4763ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3480{ 4764{
3481 clear_pending (EV_A_ (W)w); 4765 clear_pending (EV_A_ (W)w);
3482 if (expect_false (!ev_is_active (w))) 4766 if (ecb_expect_false (!ev_is_active (w)))
3483 return; 4767 return;
3484 4768
3485 EV_FREQUENT_CHECK; 4769 EV_FREQUENT_CHECK;
3486 4770
3487#if EV_USE_INOTIFY 4771#if EV_USE_INOTIFY
… …
3500} 4784}
3501#endif 4785#endif
3502 4786
3503#if EV_IDLE_ENABLE 4787#if EV_IDLE_ENABLE
3504void 4788void
3505ev_idle_start (EV_P_ ev_idle *w) 4789ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3506{ 4790{
3507 if (expect_false (ev_is_active (w))) 4791 if (ecb_expect_false (ev_is_active (w)))
3508 return; 4792 return;
3509 4793
3510 pri_adjust (EV_A_ (W)w); 4794 pri_adjust (EV_A_ (W)w);
3511 4795
3512 EV_FREQUENT_CHECK; 4796 EV_FREQUENT_CHECK;
… …
3515 int active = ++idlecnt [ABSPRI (w)]; 4799 int active = ++idlecnt [ABSPRI (w)];
3516 4800
3517 ++idleall; 4801 ++idleall;
3518 ev_start (EV_A_ (W)w, active); 4802 ev_start (EV_A_ (W)w, active);
3519 4803
3520 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);
3521 idles [ABSPRI (w)][active - 1] = w; 4805 idles [ABSPRI (w)][active - 1] = w;
3522 } 4806 }
3523 4807
3524 EV_FREQUENT_CHECK; 4808 EV_FREQUENT_CHECK;
3525} 4809}
3526 4810
3527void 4811void
3528ev_idle_stop (EV_P_ ev_idle *w) 4812ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3529{ 4813{
3530 clear_pending (EV_A_ (W)w); 4814 clear_pending (EV_A_ (W)w);
3531 if (expect_false (!ev_is_active (w))) 4815 if (ecb_expect_false (!ev_is_active (w)))
3532 return; 4816 return;
3533 4817
3534 EV_FREQUENT_CHECK; 4818 EV_FREQUENT_CHECK;
3535 4819
3536 { 4820 {
… …
3547} 4831}
3548#endif 4832#endif
3549 4833
3550#if EV_PREPARE_ENABLE 4834#if EV_PREPARE_ENABLE
3551void 4835void
3552ev_prepare_start (EV_P_ ev_prepare *w) 4836ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3553{ 4837{
3554 if (expect_false (ev_is_active (w))) 4838 if (ecb_expect_false (ev_is_active (w)))
3555 return; 4839 return;
3556 4840
3557 EV_FREQUENT_CHECK; 4841 EV_FREQUENT_CHECK;
3558 4842
3559 ev_start (EV_A_ (W)w, ++preparecnt); 4843 ev_start (EV_A_ (W)w, ++preparecnt);
3560 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4844 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3561 prepares [preparecnt - 1] = w; 4845 prepares [preparecnt - 1] = w;
3562 4846
3563 EV_FREQUENT_CHECK; 4847 EV_FREQUENT_CHECK;
3564} 4848}
3565 4849
3566void 4850void
3567ev_prepare_stop (EV_P_ ev_prepare *w) 4851ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3568{ 4852{
3569 clear_pending (EV_A_ (W)w); 4853 clear_pending (EV_A_ (W)w);
3570 if (expect_false (!ev_is_active (w))) 4854 if (ecb_expect_false (!ev_is_active (w)))
3571 return; 4855 return;
3572 4856
3573 EV_FREQUENT_CHECK; 4857 EV_FREQUENT_CHECK;
3574 4858
3575 { 4859 {
… …
3585} 4869}
3586#endif 4870#endif
3587 4871
3588#if EV_CHECK_ENABLE 4872#if EV_CHECK_ENABLE
3589void 4873void
3590ev_check_start (EV_P_ ev_check *w) 4874ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3591{ 4875{
3592 if (expect_false (ev_is_active (w))) 4876 if (ecb_expect_false (ev_is_active (w)))
3593 return; 4877 return;
3594 4878
3595 EV_FREQUENT_CHECK; 4879 EV_FREQUENT_CHECK;
3596 4880
3597 ev_start (EV_A_ (W)w, ++checkcnt); 4881 ev_start (EV_A_ (W)w, ++checkcnt);
3598 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4882 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
3599 checks [checkcnt - 1] = w; 4883 checks [checkcnt - 1] = w;
3600 4884
3601 EV_FREQUENT_CHECK; 4885 EV_FREQUENT_CHECK;
3602} 4886}
3603 4887
3604void 4888void
3605ev_check_stop (EV_P_ ev_check *w) 4889ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
3606{ 4890{
3607 clear_pending (EV_A_ (W)w); 4891 clear_pending (EV_A_ (W)w);
3608 if (expect_false (!ev_is_active (w))) 4892 if (ecb_expect_false (!ev_is_active (w)))
3609 return; 4893 return;
3610 4894
3611 EV_FREQUENT_CHECK; 4895 EV_FREQUENT_CHECK;
3612 4896
3613 { 4897 {
… …
3622 EV_FREQUENT_CHECK; 4906 EV_FREQUENT_CHECK;
3623} 4907}
3624#endif 4908#endif
3625 4909
3626#if EV_EMBED_ENABLE 4910#if EV_EMBED_ENABLE
3627void noinline 4911ecb_noinline
4912void
3628ev_embed_sweep (EV_P_ ev_embed *w) 4913ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3629{ 4914{
3630 ev_run (w->other, EVRUN_NOWAIT); 4915 ev_run (w->other, EVRUN_NOWAIT);
3631} 4916}
3632 4917
3633static void 4918static void
… …
3681 ev_idle_stop (EV_A_ idle); 4966 ev_idle_stop (EV_A_ idle);
3682} 4967}
3683#endif 4968#endif
3684 4969
3685void 4970void
3686ev_embed_start (EV_P_ ev_embed *w) 4971ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
3687{ 4972{
3688 if (expect_false (ev_is_active (w))) 4973 if (ecb_expect_false (ev_is_active (w)))
3689 return; 4974 return;
3690 4975
3691 { 4976 {
3692 EV_P = w->other; 4977 EV_P = w->other;
3693 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 ()));
… …
3712 4997
3713 EV_FREQUENT_CHECK; 4998 EV_FREQUENT_CHECK;
3714} 4999}
3715 5000
3716void 5001void
3717ev_embed_stop (EV_P_ ev_embed *w) 5002ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
3718{ 5003{
3719 clear_pending (EV_A_ (W)w); 5004 clear_pending (EV_A_ (W)w);
3720 if (expect_false (!ev_is_active (w))) 5005 if (ecb_expect_false (!ev_is_active (w)))
3721 return; 5006 return;
3722 5007
3723 EV_FREQUENT_CHECK; 5008 EV_FREQUENT_CHECK;
3724 5009
3725 ev_io_stop (EV_A_ &w->io); 5010 ev_io_stop (EV_A_ &w->io);
… …
3732} 5017}
3733#endif 5018#endif
3734 5019
3735#if EV_FORK_ENABLE 5020#if EV_FORK_ENABLE
3736void 5021void
3737ev_fork_start (EV_P_ ev_fork *w) 5022ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
3738{ 5023{
3739 if (expect_false (ev_is_active (w))) 5024 if (ecb_expect_false (ev_is_active (w)))
3740 return; 5025 return;
3741 5026
3742 EV_FREQUENT_CHECK; 5027 EV_FREQUENT_CHECK;
3743 5028
3744 ev_start (EV_A_ (W)w, ++forkcnt); 5029 ev_start (EV_A_ (W)w, ++forkcnt);
3745 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5030 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
3746 forks [forkcnt - 1] = w; 5031 forks [forkcnt - 1] = w;
3747 5032
3748 EV_FREQUENT_CHECK; 5033 EV_FREQUENT_CHECK;
3749} 5034}
3750 5035
3751void 5036void
3752ev_fork_stop (EV_P_ ev_fork *w) 5037ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
3753{ 5038{
3754 clear_pending (EV_A_ (W)w); 5039 clear_pending (EV_A_ (W)w);
3755 if (expect_false (!ev_is_active (w))) 5040 if (ecb_expect_false (!ev_is_active (w)))
3756 return; 5041 return;
3757 5042
3758 EV_FREQUENT_CHECK; 5043 EV_FREQUENT_CHECK;
3759 5044
3760 { 5045 {
… …
3770} 5055}
3771#endif 5056#endif
3772 5057
3773#if EV_CLEANUP_ENABLE 5058#if EV_CLEANUP_ENABLE
3774void 5059void
3775ev_cleanup_start (EV_P_ ev_cleanup *w) 5060ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
3776{ 5061{
3777 if (expect_false (ev_is_active (w))) 5062 if (ecb_expect_false (ev_is_active (w)))
3778 return; 5063 return;
3779 5064
3780 EV_FREQUENT_CHECK; 5065 EV_FREQUENT_CHECK;
3781 5066
3782 ev_start (EV_A_ (W)w, ++cleanupcnt); 5067 ev_start (EV_A_ (W)w, ++cleanupcnt);
3783 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 5068 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
3784 cleanups [cleanupcnt - 1] = w; 5069 cleanups [cleanupcnt - 1] = w;
3785 5070
3786 /* cleanup watchers should never keep a refcount on the loop */ 5071 /* cleanup watchers should never keep a refcount on the loop */
3787 ev_unref (EV_A); 5072 ev_unref (EV_A);
3788 EV_FREQUENT_CHECK; 5073 EV_FREQUENT_CHECK;
3789} 5074}
3790 5075
3791void 5076void
3792ev_cleanup_stop (EV_P_ ev_cleanup *w) 5077ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
3793{ 5078{
3794 clear_pending (EV_A_ (W)w); 5079 clear_pending (EV_A_ (W)w);
3795 if (expect_false (!ev_is_active (w))) 5080 if (ecb_expect_false (!ev_is_active (w)))
3796 return; 5081 return;
3797 5082
3798 EV_FREQUENT_CHECK; 5083 EV_FREQUENT_CHECK;
3799 ev_ref (EV_A); 5084 ev_ref (EV_A);
3800 5085
… …
3811} 5096}
3812#endif 5097#endif
3813 5098
3814#if EV_ASYNC_ENABLE 5099#if EV_ASYNC_ENABLE
3815void 5100void
3816ev_async_start (EV_P_ ev_async *w) 5101ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
3817{ 5102{
3818 if (expect_false (ev_is_active (w))) 5103 if (ecb_expect_false (ev_is_active (w)))
3819 return; 5104 return;
3820 5105
3821 w->sent = 0; 5106 w->sent = 0;
3822 5107
3823 evpipe_init (EV_A); 5108 evpipe_init (EV_A);
3824 5109
3825 EV_FREQUENT_CHECK; 5110 EV_FREQUENT_CHECK;
3826 5111
3827 ev_start (EV_A_ (W)w, ++asynccnt); 5112 ev_start (EV_A_ (W)w, ++asynccnt);
3828 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5113 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
3829 asyncs [asynccnt - 1] = w; 5114 asyncs [asynccnt - 1] = w;
3830 5115
3831 EV_FREQUENT_CHECK; 5116 EV_FREQUENT_CHECK;
3832} 5117}
3833 5118
3834void 5119void
3835ev_async_stop (EV_P_ ev_async *w) 5120ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
3836{ 5121{
3837 clear_pending (EV_A_ (W)w); 5122 clear_pending (EV_A_ (W)w);
3838 if (expect_false (!ev_is_active (w))) 5123 if (ecb_expect_false (!ev_is_active (w)))
3839 return; 5124 return;
3840 5125
3841 EV_FREQUENT_CHECK; 5126 EV_FREQUENT_CHECK;
3842 5127
3843 { 5128 {
… …
3851 5136
3852 EV_FREQUENT_CHECK; 5137 EV_FREQUENT_CHECK;
3853} 5138}
3854 5139
3855void 5140void
3856ev_async_send (EV_P_ ev_async *w) 5141ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
3857{ 5142{
3858 w->sent = 1; 5143 w->sent = 1;
3859 evpipe_write (EV_A_ &async_pending); 5144 evpipe_write (EV_A_ &async_pending);
3860} 5145}
3861#endif 5146#endif
… …
3898 5183
3899 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));
3900} 5185}
3901 5186
3902void 5187void
3903ev_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
3904{ 5189{
3905 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));
3906
3907 if (expect_false (!once))
3908 {
3909 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3910 return;
3911 }
3912 5191
3913 once->cb = cb; 5192 once->cb = cb;
3914 once->arg = arg; 5193 once->arg = arg;
3915 5194
3916 ev_init (&once->io, once_cb_io); 5195 ev_init (&once->io, once_cb_io);
… …
3929} 5208}
3930 5209
3931/*****************************************************************************/ 5210/*****************************************************************************/
3932 5211
3933#if EV_WALK_ENABLE 5212#if EV_WALK_ENABLE
3934void ecb_cold 5213ecb_cold
5214void
3935ev_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
3936{ 5216{
3937 int i, j; 5217 int i, j;
3938 ev_watcher_list *wl, *wn; 5218 ev_watcher_list *wl, *wn;
3939 5219
3940 if (types & (EV_IO | EV_EMBED)) 5220 if (types & (EV_IO | EV_EMBED))
… …
3983 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5263 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3984#endif 5264#endif
3985 5265
3986#if EV_IDLE_ENABLE 5266#if EV_IDLE_ENABLE
3987 if (types & EV_IDLE) 5267 if (types & EV_IDLE)
3988 for (j = NUMPRI; i--; ) 5268 for (j = NUMPRI; j--; )
3989 for (i = idlecnt [j]; i--; ) 5269 for (i = idlecnt [j]; i--; )
3990 cb (EV_A_ EV_IDLE, idles [j][i]); 5270 cb (EV_A_ EV_IDLE, idles [j][i]);
3991#endif 5271#endif
3992 5272
3993#if EV_FORK_ENABLE 5273#if EV_FORK_ENABLE
… …
4046 5326
4047#if EV_MULTIPLICITY 5327#if EV_MULTIPLICITY
4048 #include "ev_wrap.h" 5328 #include "ev_wrap.h"
4049#endif 5329#endif
4050 5330
4051EV_CPP(})
4052

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