ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/libev/ev.c
(Generate patch)

Comparing libev/ev.c (file contents):
Revision 1.441 by root, Wed May 30 15:45:40 2012 UTC vs.
Revision 1.509 by root, Sat Aug 17 05:30:16 2019 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010,2011,2012 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
… …
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
… …
208# ifndef EV_SELECT_IS_WINSOCKET 227# ifndef EV_SELECT_IS_WINSOCKET
209# define EV_SELECT_IS_WINSOCKET 1 228# define EV_SELECT_IS_WINSOCKET 1
210# endif 229# endif
211# undef EV_AVOID_STDIO 230# undef EV_AVOID_STDIO
212#endif 231#endif
213
214/* OS X, in its infinite idiocy, actually HARDCODES
215 * a limit of 1024 into their select. Where people have brains,
216 * OS X engineers apparently have a vacuum. Or maybe they were
217 * ordered to have a vacuum, or they do anything for money.
218 * This might help. Or not.
219 */
220#define _DARWIN_UNLIMITED_SELECT 1
221 232
222/* 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 */
223 234
224/* try to deduce the maximum number of signals on this platform */ 235/* try to deduce the maximum number of signals on this platform */
225#if defined EV_NSIG 236#if defined EV_NSIG
… …
241#elif defined SIGARRAYSIZE 252#elif defined SIGARRAYSIZE
242# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 253# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
243#elif defined _sys_nsig 254#elif defined _sys_nsig
244# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 255# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
245#else 256#else
246# error "unable to find value for NSIG, please report" 257# define EV_NSIG (8 * sizeof (sigset_t) + 1)
247/* to make it compile regardless, just remove the above line, */
248/* but consider reporting it, too! :) */
249# define EV_NSIG 65
250#endif 258#endif
251 259
252#ifndef EV_USE_FLOOR 260#ifndef EV_USE_FLOOR
253# define EV_USE_FLOOR 0 261# define EV_USE_FLOOR 0
254#endif 262#endif
255 263
256#ifndef EV_USE_CLOCK_SYSCALL 264#ifndef EV_USE_CLOCK_SYSCALL
257# if __linux && __GLIBC__ >= 2 265# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
258# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 266# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
259# else 267# else
260# define EV_USE_CLOCK_SYSCALL 0 268# define EV_USE_CLOCK_SYSCALL 0
269# endif
270#endif
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
261# endif 278# endif
262#endif 279#endif
263 280
264#ifndef EV_USE_MONOTONIC 281#ifndef EV_USE_MONOTONIC
265# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0 282# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
… …
307 324
308#ifndef EV_USE_PORT 325#ifndef EV_USE_PORT
309# define EV_USE_PORT 0 326# define EV_USE_PORT 0
310#endif 327#endif
311 328
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
312#ifndef EV_USE_INOTIFY 345#ifndef EV_USE_INOTIFY
313# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 346# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
314# define EV_USE_INOTIFY EV_FEATURE_OS 347# define EV_USE_INOTIFY EV_FEATURE_OS
315# else 348# else
316# define EV_USE_INOTIFY 0 349# define EV_USE_INOTIFY 0
… …
355# define EV_USE_4HEAP EV_FEATURE_DATA 388# define EV_USE_4HEAP EV_FEATURE_DATA
356#endif 389#endif
357 390
358#ifndef EV_HEAP_CACHE_AT 391#ifndef EV_HEAP_CACHE_AT
359# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 392# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
393#endif
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
360#endif 409#endif
361 410
362/* 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, */
363/* which makes programs even slower. might work on other unices, too. */ 412/* which makes programs even slower. might work on other unices, too. */
364#if EV_USE_CLOCK_SYSCALL 413#if EV_USE_CLOCK_SYSCALL
365# include <sys/syscall.h> 414# include <sys/syscall.h>
366# ifdef SYS_clock_gettime 415# ifdef SYS_clock_gettime
367# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 416# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
368# undef EV_USE_MONOTONIC 417# undef EV_USE_MONOTONIC
369# define EV_USE_MONOTONIC 1 418# define EV_USE_MONOTONIC 1
419# define EV_NEED_SYSCALL 1
370# else 420# else
371# undef EV_USE_CLOCK_SYSCALL 421# undef EV_USE_CLOCK_SYSCALL
372# define EV_USE_CLOCK_SYSCALL 0 422# define EV_USE_CLOCK_SYSCALL 0
373# endif 423# endif
374#endif 424#endif
375 425
376/* 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 */
377 427
378#ifdef _AIX
379/* AIX has a completely broken poll.h header */
380# undef EV_USE_POLL
381# define EV_USE_POLL 0
382#endif
383
384#ifndef CLOCK_MONOTONIC 428#ifndef CLOCK_MONOTONIC
385# undef EV_USE_MONOTONIC 429# undef EV_USE_MONOTONIC
386# define EV_USE_MONOTONIC 0 430# define EV_USE_MONOTONIC 0
387#endif 431#endif
388 432
… …
398 442
399#if !EV_USE_NANOSLEEP 443#if !EV_USE_NANOSLEEP
400/* 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 */
401# if !defined _WIN32 && !defined __hpux 445# if !defined _WIN32 && !defined __hpux
402# 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
403# endif 472# endif
404#endif 473#endif
405 474
406#if EV_USE_INOTIFY 475#if EV_USE_INOTIFY
407# include <sys/statfs.h> 476# include <sys/statfs.h>
… …
449 uint32_t ssi_signo; 518 uint32_t ssi_signo;
450 char pad[128 - sizeof (uint32_t)]; 519 char pad[128 - sizeof (uint32_t)];
451}; 520};
452#endif 521#endif
453 522
454/**/ 523/*****************************************************************************/
455 524
456#if EV_VERIFY >= 3 525#if EV_VERIFY >= 3
457# define EV_FREQUENT_CHECK ev_verify (EV_A) 526# define EV_FREQUENT_CHECK ev_verify (EV_A)
458#else 527#else
459# define EV_FREQUENT_CHECK do { } while (0) 528# define EV_FREQUENT_CHECK do { } while (0)
… …
464 * This value is good at least till the year 4000. 533 * This value is good at least till the year 4000.
465 */ 534 */
466#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */ 535#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
467/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */ 536/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
468 537
469#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) */
470#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) */
471 540
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
472#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)
473#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
474 558
475/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ 559/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
476/* ECB.H BEGIN */ 560/* ECB.H BEGIN */
477/* 561/*
478 * libecb - http://software.schmorp.de/pkg/libecb 562 * libecb - http://software.schmorp.de/pkg/libecb
479 * 563 *
480 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de> 564 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
481 * Copyright (©) 2011 Emanuele Giaquinta 565 * Copyright (©) 2011 Emanuele Giaquinta
482 * All rights reserved. 566 * All rights reserved.
483 * 567 *
484 * Redistribution and use in source and binary forms, with or without modifica- 568 * Redistribution and use in source and binary forms, with or without modifica-
485 * tion, are permitted provided that the following conditions are met: 569 * tion, are permitted provided that the following conditions are met:
… …
499 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 583 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
500 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 584 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
501 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- 585 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
502 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 586 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
503 * OF THE POSSIBILITY OF SUCH DAMAGE. 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.
504 */ 599 */
505 600
506#ifndef ECB_H 601#ifndef ECB_H
507#define ECB_H 602#define ECB_H
508 603
509/* 16 bits major, 16 bits minor */ 604/* 16 bits major, 16 bits minor */
510#define ECB_VERSION 0x00010001 605#define ECB_VERSION 0x00010006
511 606
512#ifdef _WIN32 607#ifdef _WIN32
513 typedef signed char int8_t; 608 typedef signed char int8_t;
514 typedef unsigned char uint8_t; 609 typedef unsigned char uint8_t;
515 typedef signed short int16_t; 610 typedef signed short int16_t;
… …
530 #else 625 #else
531 #define ECB_PTRSIZE 4 626 #define ECB_PTRSIZE 4
532 typedef uint32_t uintptr_t; 627 typedef uint32_t uintptr_t;
533 typedef int32_t intptr_t; 628 typedef int32_t intptr_t;
534 #endif 629 #endif
535 typedef intptr_t ptrdiff_t;
536#else 630#else
537 #include <inttypes.h> 631 #include <inttypes.h>
538 #if UINTMAX_MAX > 0xffffffffU 632 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
539 #define ECB_PTRSIZE 8 633 #define ECB_PTRSIZE 8
540 #else 634 #else
541 #define ECB_PTRSIZE 4 635 #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
542 #endif 648 #endif
543#endif 649#endif
544 650
545/* many compilers define _GNUC_ to some versions but then only implement 651/* many compilers define _GNUC_ to some versions but then only implement
546 * what their idiot authors think are the "more important" extensions, 652 * what their idiot authors think are the "more important" extensions,
547 * causing enormous grief in return for some better fake benchmark numbers. 653 * causing enormous grief in return for some better fake benchmark numbers.
548 * or so. 654 * or so.
549 * 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
550 * 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.
551 */ 657 */
552#ifndef ECB_GCC_VERSION
553 #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__
554 #define ECB_GCC_VERSION(major,minor) 0 659 #define ECB_GCC_VERSION(major,minor) 0
555 #else 660#else
556 #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)))
557 #endif 662#endif
558#endif
559 663
560#define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */ 664#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
561#define ECB_C99 (__STDC_VERSION__ >= 199901L) 665
562#define ECB_C11 (__STDC_VERSION__ >= 201112L) 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
563#define ECB_CPP (__cplusplus+0) 678#define ECB_CPP (__cplusplus+0)
564#define ECB_CPP98 (__cplusplus >= 199711L)
565#define ECB_CPP11 (__cplusplus >= 201103L) 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
566 704
567/*****************************************************************************/ 705/*****************************************************************************/
568 706
569/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ 707/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
570/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */ 708/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
… …
575 713
576#if ECB_NO_SMP 714#if ECB_NO_SMP
577 #define ECB_MEMORY_FENCE do { } while (0) 715 #define ECB_MEMORY_FENCE do { } while (0)
578#endif 716#endif
579 717
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
580#ifndef ECB_MEMORY_FENCE 727#ifndef ECB_MEMORY_FENCE
581 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 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")
582 #if __i386 || __i386__ 730 #if __i386 || __i386__
583 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") 731 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
584 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") 732 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
585 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 733 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
586 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__ 734 #elif ECB_GCC_AMD64
587 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 735 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
588 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") 736 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
589 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 737 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
590 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 738 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
591 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 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 */
592 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \ 747 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
593 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ 748 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
749 || defined __ARM_ARCH_6T2__
594 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") 750 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
595 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \ 751 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
596 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__ 752 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
597 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") 753 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
598 #elif __sparc || __sparc__ 754 #elif __aarch64__
755 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
756 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
599 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory") 757 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
600 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") 758 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
601 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") 759 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
602 #elif defined __s390__ || defined __s390x__ 760 #elif defined __s390__ || defined __s390x__
603 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") 761 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
604 #elif defined __mips__ 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. */
605 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 765 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
606 #elif defined __alpha__ 766 #elif defined __alpha__
607 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory") 767 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
608 #elif defined __hppa__ 768 #elif defined __hppa__
609 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory") 769 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
610 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 770 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
611 #elif defined __ia64__ 771 #elif defined __ia64__
612 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory") 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")
613 #endif 779 #endif
614 #endif 780 #endif
615#endif 781#endif
616 782
617#ifndef ECB_MEMORY_FENCE 783#ifndef ECB_MEMORY_FENCE
618 #if ECB_GCC_VERSION(4,7) 784 #if ECB_GCC_VERSION(4,7)
619 /* see comment below about the C11 memory model. in short - avoid */ 785 /* see comment below (stdatomic.h) about the C11 memory model. */
620 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST) 786 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
621 #elif defined __clang && __has_feature (cxx_atomic) 787 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
622 /* see above */ 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. */
623 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) 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
624 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ 798 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
625 #define ECB_MEMORY_FENCE __sync_synchronize () 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()
626 #elif _MSC_VER >= 1400 /* VC++ 2005 */ 806 #elif _MSC_VER >= 1400 /* VC++ 2005 */
627 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) 807 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
628 #define ECB_MEMORY_FENCE _ReadWriteBarrier () 808 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
629 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ 809 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
630 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () 810 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
631 #elif defined _WIN32 811 #elif defined _WIN32
632 #include <WinNT.h> 812 #include <WinNT.h>
633 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ 813 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
634 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 814 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
635 #include <mbarrier.h> 815 #include <mbarrier.h>
636 #define ECB_MEMORY_FENCE __machine_rw_barrier () 816 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
637 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier () 817 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
638 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier () 818 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
819 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
639 #elif __xlC__ 820 #elif __xlC__
640 #define ECB_MEMORY_FENCE __sync () 821 #define ECB_MEMORY_FENCE __sync ()
641 #endif 822 #endif
642#endif 823#endif
643 824
644#ifndef ECB_MEMORY_FENCE 825#ifndef ECB_MEMORY_FENCE
645 #if ECB_C11 && !defined __STDC_NO_ATOMICS__ 826 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
646 /* we assume that these memory fences work on all variables/all memory accesses, */ 827 /* we assume that these memory fences work on all variables/all memory accesses, */
647 /* not just C11 atomics and atomic accesses */ 828 /* not just C11 atomics and atomic accesses */
648 #include <stdatomic.h> 829 #include <stdatomic.h>
649 /* unfortunately, the C11 memory model seems to be very limited, and unable to express */
650 /* simple barrier semantics. That means we need to take out thor's hammer. */
651 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst) 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)
652 #endif 833 #endif
653#endif 834#endif
654 835
655#ifndef ECB_MEMORY_FENCE 836#ifndef ECB_MEMORY_FENCE
656 #if !ECB_AVOID_PTHREADS 837 #if !ECB_AVOID_PTHREADS
… …
676 857
677#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE 858#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
678 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 859 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
679#endif 860#endif
680 861
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
681/*****************************************************************************/ 866/*****************************************************************************/
682 867
683#if __cplusplus 868#if ECB_CPP
684 #define ecb_inline static inline 869 #define ecb_inline static inline
685#elif ECB_GCC_VERSION(2,5) 870#elif ECB_GCC_VERSION(2,5)
686 #define ecb_inline static __inline__ 871 #define ecb_inline static __inline__
687#elif ECB_C99 872#elif ECB_C99
688 #define ecb_inline static inline 873 #define ecb_inline static inline
… …
702 887
703#define ECB_CONCAT_(a, b) a ## b 888#define ECB_CONCAT_(a, b) a ## b
704#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) 889#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
705#define ECB_STRINGIFY_(a) # a 890#define ECB_STRINGIFY_(a) # a
706#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) 891#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
892#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
707 893
708#define ecb_function_ ecb_inline 894#define ecb_function_ ecb_inline
709 895
710#if ECB_GCC_VERSION(3,1) 896#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
711 #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)
712 #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)
713 #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)
714 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) 919 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
715#else 920#else
716 #define ecb_attribute(attrlist)
717 #define ecb_is_constant(expr) 0
718 #define ecb_expect(expr,value) (expr)
719 #define ecb_prefetch(addr,rw,locality) 921 #define ecb_prefetch(addr,rw,locality)
720#endif 922#endif
721 923
722/* no emulation for ecb_decltype */ 924/* no emulation for ecb_decltype */
723#if ECB_GCC_VERSION(4,5) 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; };
724 #define ecb_decltype(x) __decltype(x) 928 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
725#elif ECB_GCC_VERSION(3,0) 929#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
726 #define ecb_decltype(x) __typeof(x) 930 #define ecb_decltype(x) __typeof__ (x)
727#endif 931#endif
728 932
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
729#define ecb_noinline ecb_attribute ((__noinline__)) 950 #define ecb_noinline ecb_attribute ((__noinline__))
951#endif
952
730#define ecb_unused ecb_attribute ((__unused__)) 953#define ecb_unused ecb_attribute ((__unused__))
731#define ecb_const ecb_attribute ((__const__)) 954#define ecb_const ecb_attribute ((__const__))
732#define ecb_pure ecb_attribute ((__pure__)) 955#define ecb_pure ecb_attribute ((__pure__))
733 956
734#if ECB_C11 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 */
735 #define ecb_noreturn _Noreturn 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)
736#else 965#else
737 #define ecb_noreturn ecb_attribute ((__noreturn__)) 966 #define ecb_noreturn ecb_attribute ((__noreturn__))
738#endif 967#endif
739 968
740#if ECB_GCC_VERSION(4,3) 969#if ECB_GCC_VERSION(4,3)
… …
755/* for compatibility to the rest of the world */ 984/* for compatibility to the rest of the world */
756#define ecb_likely(expr) ecb_expect_true (expr) 985#define ecb_likely(expr) ecb_expect_true (expr)
757#define ecb_unlikely(expr) ecb_expect_false (expr) 986#define ecb_unlikely(expr) ecb_expect_false (expr)
758 987
759/* count trailing zero bits and count # of one bits */ 988/* count trailing zero bits and count # of one bits */
760#if ECB_GCC_VERSION(3,4) 989#if ECB_GCC_VERSION(3,4) \
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))
761 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */ 993 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
762 #define ecb_ld32(x) (__builtin_clz (x) ^ 31) 994 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
763 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) 995 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
764 #define ecb_ctz32(x) __builtin_ctz (x) 996 #define ecb_ctz32(x) __builtin_ctz (x)
765 #define ecb_ctz64(x) __builtin_ctzll (x) 997 #define ecb_ctz64(x) __builtin_ctzll (x)
766 #define ecb_popcount32(x) __builtin_popcount (x) 998 #define ecb_popcount32(x) __builtin_popcount (x)
767 /* no popcountll */ 999 /* no popcountll */
768#else 1000#else
769 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; 1001 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
770 ecb_function_ int 1002 ecb_function_ ecb_const int
771 ecb_ctz32 (uint32_t x) 1003 ecb_ctz32 (uint32_t x)
772 { 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
773 int r = 0; 1010 int r = 0;
774 1011
775 x &= ~x + 1; /* this isolates the lowest bit */ 1012 x &= ~x + 1; /* this isolates the lowest bit */
776 1013
777#if ECB_branchless_on_i386 1014#if ECB_branchless_on_i386
… …
787 if (x & 0xff00ff00) r += 8; 1024 if (x & 0xff00ff00) r += 8;
788 if (x & 0xffff0000) r += 16; 1025 if (x & 0xffff0000) r += 16;
789#endif 1026#endif
790 1027
791 return r; 1028 return r;
1029#endif
792 } 1030 }
793 1031
794 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; 1032 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
795 ecb_function_ int 1033 ecb_function_ ecb_const int
796 ecb_ctz64 (uint64_t x) 1034 ecb_ctz64 (uint64_t x)
797 { 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
798 int shift = x & 0xffffffffU ? 0 : 32; 1041 int shift = x & 0xffffffff ? 0 : 32;
799 return ecb_ctz32 (x >> shift) + shift; 1042 return ecb_ctz32 (x >> shift) + shift;
1043#endif
800 } 1044 }
801 1045
802 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; 1046 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
803 ecb_function_ int 1047 ecb_function_ ecb_const int
804 ecb_popcount32 (uint32_t x) 1048 ecb_popcount32 (uint32_t x)
805 { 1049 {
806 x -= (x >> 1) & 0x55555555; 1050 x -= (x >> 1) & 0x55555555;
807 x = ((x >> 2) & 0x33333333) + (x & 0x33333333); 1051 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
808 x = ((x >> 4) + x) & 0x0f0f0f0f; 1052 x = ((x >> 4) + x) & 0x0f0f0f0f;
809 x *= 0x01010101; 1053 x *= 0x01010101;
810 1054
811 return x >> 24; 1055 return x >> 24;
812 } 1056 }
813 1057
814 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; 1058 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
815 ecb_function_ int ecb_ld32 (uint32_t x) 1059 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
816 { 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
817 int r = 0; 1066 int r = 0;
818 1067
819 if (x >> 16) { x >>= 16; r += 16; } 1068 if (x >> 16) { x >>= 16; r += 16; }
820 if (x >> 8) { x >>= 8; r += 8; } 1069 if (x >> 8) { x >>= 8; r += 8; }
821 if (x >> 4) { x >>= 4; r += 4; } 1070 if (x >> 4) { x >>= 4; r += 4; }
822 if (x >> 2) { x >>= 2; r += 2; } 1071 if (x >> 2) { x >>= 2; r += 2; }
823 if (x >> 1) { r += 1; } 1072 if (x >> 1) { r += 1; }
824 1073
825 return r; 1074 return r;
1075#endif
826 } 1076 }
827 1077
828 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; 1078 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
829 ecb_function_ int ecb_ld64 (uint64_t x) 1079 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
830 { 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
831 int r = 0; 1086 int r = 0;
832 1087
833 if (x >> 32) { x >>= 32; r += 32; } 1088 if (x >> 32) { x >>= 32; r += 32; }
834 1089
835 return r + ecb_ld32 (x); 1090 return r + ecb_ld32 (x);
1091#endif
836 } 1092 }
837#endif 1093#endif
838 1094
839ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const; 1095ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
840ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); } 1096ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
841ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const; 1097ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
842ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); } 1098ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
843 1099
844ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const; 1100ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
845ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) 1101ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
846{ 1102{
847 return ( (x * 0x0802U & 0x22110U) 1103 return ( (x * 0x0802U & 0x22110U)
848 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; 1104 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
849} 1105}
850 1106
851ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const; 1107ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
852ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) 1108ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
853{ 1109{
854 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1); 1110 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
855 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2); 1111 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
856 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4); 1112 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
857 x = ( x >> 8 ) | ( x << 8); 1113 x = ( x >> 8 ) | ( x << 8);
858 1114
859 return x; 1115 return x;
860} 1116}
861 1117
862ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const; 1118ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
863ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) 1119ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
864{ 1120{
865 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1); 1121 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
866 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2); 1122 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
867 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4); 1123 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
868 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8); 1124 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
… …
871 return x; 1127 return x;
872} 1128}
873 1129
874/* popcount64 is only available on 64 bit cpus as gcc builtin */ 1130/* popcount64 is only available on 64 bit cpus as gcc builtin */
875/* so for this version we are lazy */ 1131/* so for this version we are lazy */
876ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 1132ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
877ecb_function_ int 1133ecb_function_ ecb_const int
878ecb_popcount64 (uint64_t x) 1134ecb_popcount64 (uint64_t x)
879{ 1135{
880 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); 1136 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
881} 1137}
882 1138
883ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const; 1139ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
884ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const; 1140ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
885ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const; 1141ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
886ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const; 1142ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
887ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const; 1143ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
888ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const; 1144ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
889ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const; 1145ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
890ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const; 1146ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
891 1147
892ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); } 1148ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
893ecb_inline uint8_t ecb_rotr8 (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); }
894ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); } 1150ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
895ecb_inline uint16_t ecb_rotr16 (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); }
896ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } 1152ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
897ecb_inline uint32_t ecb_rotr32 (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); }
898ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } 1154ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
899ecb_inline uint64_t ecb_rotr64 (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); }
900 1156
901#if ECB_GCC_VERSION(4,3) 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
902 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 1161 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1162 #endif
903 #define ecb_bswap32(x) __builtin_bswap32 (x) 1163 #define ecb_bswap32(x) __builtin_bswap32 (x)
904 #define ecb_bswap64(x) __builtin_bswap64 (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)))
905#else 1170#else
906 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; 1171 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
907 ecb_function_ uint16_t 1172 ecb_function_ ecb_const uint16_t
908 ecb_bswap16 (uint16_t x) 1173 ecb_bswap16 (uint16_t x)
909 { 1174 {
910 return ecb_rotl16 (x, 8); 1175 return ecb_rotl16 (x, 8);
911 } 1176 }
912 1177
913 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; 1178 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
914 ecb_function_ uint32_t 1179 ecb_function_ ecb_const uint32_t
915 ecb_bswap32 (uint32_t x) 1180 ecb_bswap32 (uint32_t x)
916 { 1181 {
917 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); 1182 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
918 } 1183 }
919 1184
920 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; 1185 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
921 ecb_function_ uint64_t 1186 ecb_function_ ecb_const uint64_t
922 ecb_bswap64 (uint64_t x) 1187 ecb_bswap64 (uint64_t x)
923 { 1188 {
924 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); 1189 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
925 } 1190 }
926#endif 1191#endif
927 1192
928#if ECB_GCC_VERSION(4,5) 1193#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
929 #define ecb_unreachable() __builtin_unreachable () 1194 #define ecb_unreachable() __builtin_unreachable ()
930#else 1195#else
931 /* this seems to work fine, but gcc always emits a warning for it :/ */ 1196 /* this seems to work fine, but gcc always emits a warning for it :/ */
932 ecb_inline void ecb_unreachable (void) ecb_noreturn; 1197 ecb_inline ecb_noreturn void ecb_unreachable (void);
933 ecb_inline void ecb_unreachable (void) { } 1198 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
934#endif 1199#endif
935 1200
936/* try to tell the compiler that some condition is definitely true */ 1201/* try to tell the compiler that some condition is definitely true */
937#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) 1202#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
938 1203
939ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const; 1204ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
940ecb_inline unsigned char 1205ecb_inline ecb_const uint32_t
941ecb_byteorder_helper (void) 1206ecb_byteorder_helper (void)
942{ 1207{
943 const uint32_t u = 0x11223344; 1208 /* the union code still generates code under pressure in gcc, */
944 return *(unsigned char *)&u; 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
945} 1230}
946 1231
947ecb_inline ecb_bool ecb_big_endian (void) ecb_const; 1232ecb_inline ecb_const ecb_bool ecb_big_endian (void);
948ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } 1233ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
949ecb_inline ecb_bool ecb_little_endian (void) ecb_const; 1234ecb_inline ecb_const ecb_bool ecb_little_endian (void);
950ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } 1235ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
951 1236
952#if ECB_GCC_VERSION(3,0) || ECB_C99 1237#if ECB_GCC_VERSION(3,0) || ECB_C99
953 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) 1238 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
954#else 1239#else
955 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) 1240 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
956#endif 1241#endif
957 1242
958#if __cplusplus 1243#if ECB_CPP
959 template<typename T> 1244 template<typename T>
960 static inline T ecb_div_rd (T val, T div) 1245 static inline T ecb_div_rd (T val, T div)
961 { 1246 {
962 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; 1247 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
963 } 1248 }
… …
980 } 1265 }
981#else 1266#else
982 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1267 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
983#endif 1268#endif
984 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
985#endif 1575#endif
986 1576
987/* ECB.H END */ 1577/* ECB.H END */
988 1578
989#if ECB_MEMORY_FENCE_NEEDS_PTHREADS 1579#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
990/* if your architecture doesn't need memory fences, e.g. because it is 1580/* if your architecture doesn't need memory fences, e.g. because it is
991 * single-cpu/core, or if you use libev in a project that doesn't use libev 1581 * single-cpu/core, or if you use libev in a project that doesn't use libev
992 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling 1582 * from multiple threads, then you can define ECB_NO_THREADS when compiling
993 * libev, in which cases the memory fences become nops. 1583 * libev, in which cases the memory fences become nops.
994 * alternatively, you can remove this #error and link against libpthread, 1584 * alternatively, you can remove this #error and link against libpthread,
995 * which will then provide the memory fences. 1585 * which will then provide the memory fences.
996 */ 1586 */
997# error "memory fences not defined for your architecture, please report" 1587# error "memory fences not defined for your architecture, please report"
… …
1001# define ECB_MEMORY_FENCE do { } while (0) 1591# define ECB_MEMORY_FENCE do { } while (0)
1002# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 1592# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1003# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 1593# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1004#endif 1594#endif
1005 1595
1006#define expect_false(cond) ecb_expect_false (cond)
1007#define expect_true(cond) ecb_expect_true (cond)
1008#define noinline ecb_noinline
1009
1010#define inline_size ecb_inline 1596#define inline_size ecb_inline
1011 1597
1012#if EV_FEATURE_CODE 1598#if EV_FEATURE_CODE
1013# define inline_speed ecb_inline 1599# define inline_speed ecb_inline
1014#else 1600#else
1015# define inline_speed static noinline 1601# define inline_speed ecb_noinline static
1016#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/*****************************************************************************/
1017 1669
1018#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1670#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
1019 1671
1020#if EV_MINPRI == EV_MAXPRI 1672#if EV_MINPRI == EV_MAXPRI
1021# define ABSPRI(w) (((W)w), 0) 1673# define ABSPRI(w) (((W)w), 0)
1022#else 1674#else
1023# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1675# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
1024#endif 1676#endif
1025 1677
1026#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1678#define EMPTY /* required for microsofts broken pseudo-c compiler */
1027#define EMPTY2(a,b) /* used to suppress some warnings */
1028 1679
1029typedef ev_watcher *W; 1680typedef ev_watcher *W;
1030typedef ev_watcher_list *WL; 1681typedef ev_watcher_list *WL;
1031typedef ev_watcher_time *WT; 1682typedef ev_watcher_time *WT;
1032 1683
… …
1057# include "ev_win32.c" 1708# include "ev_win32.c"
1058#endif 1709#endif
1059 1710
1060/*****************************************************************************/ 1711/*****************************************************************************/
1061 1712
1713#if EV_USE_LINUXAIO
1714# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1715#endif
1716
1062/* define a suitable floor function (only used by periodics atm) */ 1717/* define a suitable floor function (only used by periodics atm) */
1063 1718
1064#if EV_USE_FLOOR 1719#if EV_USE_FLOOR
1065# include <math.h> 1720# include <math.h>
1066# define ev_floor(v) floor (v) 1721# define ev_floor(v) floor (v)
1067#else 1722#else
1068 1723
1069#include <float.h> 1724#include <float.h>
1070 1725
1071/* 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
1072static ev_tstamp noinline 1728static ev_tstamp
1073ev_floor (ev_tstamp v) 1729ev_floor (ev_tstamp v)
1074{ 1730{
1075 /* the choice of shift factor is not terribly important */ 1731 /* the choice of shift factor is not terribly important */
1076#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1732#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1077 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1733 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1078#else 1734#else
1079 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; 1735 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1080#endif 1736#endif
1081 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
1082 /* argument too large for an unsigned long? */ 1746 /* argument too large for an unsigned long? then reduce it */
1083 if (expect_false (v >= shift)) 1747 if (ecb_expect_false (v >= shift))
1084 { 1748 {
1085 ev_tstamp f; 1749 ev_tstamp f;
1086 1750
1087 if (v == v - 1.) 1751 if (v == v - 1.)
1088 return v; /* very large number */ 1752 return v; /* very large numbers are assumed to be integer */
1089 1753
1090 f = shift * ev_floor (v * (1. / shift)); 1754 f = shift * ev_floor (v * (1. / shift));
1091 return f + ev_floor (v - f); 1755 return f + ev_floor (v - f);
1092 } 1756 }
1093 1757
1094 /* special treatment for negative args? */
1095 if (expect_false (v < 0.))
1096 {
1097 ev_tstamp f = -ev_floor (-v);
1098
1099 return f - (f == v ? 0 : 1);
1100 }
1101
1102 /* fits into an unsigned long */ 1758 /* fits into an unsigned long */
1103 return (unsigned long)v; 1759 return (unsigned long)v;
1104} 1760}
1105 1761
1106#endif 1762#endif
… …
1109 1765
1110#ifdef __linux 1766#ifdef __linux
1111# include <sys/utsname.h> 1767# include <sys/utsname.h>
1112#endif 1768#endif
1113 1769
1114static unsigned int noinline ecb_cold 1770ecb_noinline ecb_cold
1771static unsigned int
1115ev_linux_version (void) 1772ev_linux_version (void)
1116{ 1773{
1117#ifdef __linux 1774#ifdef __linux
1118 unsigned int v = 0; 1775 unsigned int v = 0;
1119 struct utsname buf; 1776 struct utsname buf;
… …
1148} 1805}
1149 1806
1150/*****************************************************************************/ 1807/*****************************************************************************/
1151 1808
1152#if EV_AVOID_STDIO 1809#if EV_AVOID_STDIO
1153static void noinline ecb_cold 1810ecb_noinline ecb_cold
1811static void
1154ev_printerr (const char *msg) 1812ev_printerr (const char *msg)
1155{ 1813{
1156 write (STDERR_FILENO, msg, strlen (msg)); 1814 write (STDERR_FILENO, msg, strlen (msg));
1157} 1815}
1158#endif 1816#endif
1159 1817
1160static void (*syserr_cb)(const char *msg) EV_THROW; 1818static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
1161 1819
1162void ecb_cold 1820ecb_cold
1821void
1163ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW 1822ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
1164{ 1823{
1165 syserr_cb = cb; 1824 syserr_cb = cb;
1166} 1825}
1167 1826
1168static void noinline ecb_cold 1827ecb_noinline ecb_cold
1828static void
1169ev_syserr (const char *msg) 1829ev_syserr (const char *msg)
1170{ 1830{
1171 if (!msg) 1831 if (!msg)
1172 msg = "(libev) system error"; 1832 msg = "(libev) system error";
1173 1833
… …
1186 abort (); 1846 abort ();
1187 } 1847 }
1188} 1848}
1189 1849
1190static void * 1850static void *
1191ev_realloc_emul (void *ptr, long size) EV_THROW 1851ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
1192{ 1852{
1193#if __GLIBC__
1194 return realloc (ptr, size);
1195#else
1196 /* some systems, notably openbsd and darwin, fail to properly 1853 /* some systems, notably openbsd and darwin, fail to properly
1197 * 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
1198 * 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.
1199 */ 1858 */
1200 1859
1201 if (size) 1860 if (size)
1202 return realloc (ptr, size); 1861 return realloc (ptr, size);
1203 1862
1204 free (ptr); 1863 free (ptr);
1205 return 0; 1864 return 0;
1206#endif
1207} 1865}
1208 1866
1209static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul; 1867static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
1210 1868
1211void ecb_cold 1869ecb_cold
1870void
1212ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW 1871ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
1213{ 1872{
1214 alloc = cb; 1873 alloc = cb;
1215} 1874}
1216 1875
1217inline_speed void * 1876inline_speed void *
… …
1244typedef struct 1903typedef struct
1245{ 1904{
1246 WL head; 1905 WL head;
1247 unsigned char events; /* the events watched for */ 1906 unsigned char events; /* the events watched for */
1248 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) */
1249 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 */
1250 unsigned char unused; 1909 unsigned char eflags; /* flags field for use by backends */
1251#if EV_USE_EPOLL 1910#if EV_USE_EPOLL
1252 unsigned int egen; /* generation counter to counter epoll bugs */ 1911 unsigned int egen; /* generation counter to counter epoll bugs */
1253#endif 1912#endif
1254#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 1913#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1255 SOCKET handle; 1914 SOCKET handle;
… …
1309 static struct ev_loop default_loop_struct; 1968 static struct ev_loop default_loop_struct;
1310 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */ 1969 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
1311 1970
1312#else 1971#else
1313 1972
1314 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */ 1973 EV_API_DECL ev_tstamp ev_rt_now = EV_TS_CONST (0.); /* needs to be initialised to make it a definition despite extern */
1315 #define VAR(name,decl) static decl; 1974 #define VAR(name,decl) static decl;
1316 #include "ev_vars.h" 1975 #include "ev_vars.h"
1317 #undef VAR 1976 #undef VAR
1318 1977
1319 static int ev_default_loop_ptr; 1978 static int ev_default_loop_ptr;
1320 1979
1321#endif 1980#endif
1322 1981
1323#if EV_FEATURE_API 1982#if EV_FEATURE_API
1324# 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)
1325# 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)
1326# define EV_INVOKE_PENDING invoke_cb (EV_A) 1985# define EV_INVOKE_PENDING invoke_cb (EV_A)
1327#else 1986#else
1328# define EV_RELEASE_CB (void)0 1987# define EV_RELEASE_CB (void)0
1329# define EV_ACQUIRE_CB (void)0 1988# define EV_ACQUIRE_CB (void)0
1330# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1989# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
… …
1334 1993
1335/*****************************************************************************/ 1994/*****************************************************************************/
1336 1995
1337#ifndef EV_HAVE_EV_TIME 1996#ifndef EV_HAVE_EV_TIME
1338ev_tstamp 1997ev_tstamp
1339ev_time (void) EV_THROW 1998ev_time (void) EV_NOEXCEPT
1340{ 1999{
1341#if EV_USE_REALTIME 2000#if EV_USE_REALTIME
1342 if (expect_true (have_realtime)) 2001 if (ecb_expect_true (have_realtime))
1343 { 2002 {
1344 struct timespec ts; 2003 struct timespec ts;
1345 clock_gettime (CLOCK_REALTIME, &ts); 2004 clock_gettime (CLOCK_REALTIME, &ts);
1346 return ts.tv_sec + ts.tv_nsec * 1e-9; 2005 return EV_TS_GET (ts);
1347 } 2006 }
1348#endif 2007#endif
1349 2008
1350 struct timeval tv; 2009 struct timeval tv;
1351 gettimeofday (&tv, 0); 2010 gettimeofday (&tv, 0);
1352 return tv.tv_sec + tv.tv_usec * 1e-6; 2011 return EV_TV_GET (tv);
1353} 2012}
1354#endif 2013#endif
1355 2014
1356inline_size ev_tstamp 2015inline_size ev_tstamp
1357get_clock (void) 2016get_clock (void)
1358{ 2017{
1359#if EV_USE_MONOTONIC 2018#if EV_USE_MONOTONIC
1360 if (expect_true (have_monotonic)) 2019 if (ecb_expect_true (have_monotonic))
1361 { 2020 {
1362 struct timespec ts; 2021 struct timespec ts;
1363 clock_gettime (CLOCK_MONOTONIC, &ts); 2022 clock_gettime (CLOCK_MONOTONIC, &ts);
1364 return ts.tv_sec + ts.tv_nsec * 1e-9; 2023 return EV_TS_GET (ts);
1365 } 2024 }
1366#endif 2025#endif
1367 2026
1368 return ev_time (); 2027 return ev_time ();
1369} 2028}
1370 2029
1371#if EV_MULTIPLICITY 2030#if EV_MULTIPLICITY
1372ev_tstamp 2031ev_tstamp
1373ev_now (EV_P) EV_THROW 2032ev_now (EV_P) EV_NOEXCEPT
1374{ 2033{
1375 return ev_rt_now; 2034 return ev_rt_now;
1376} 2035}
1377#endif 2036#endif
1378 2037
1379void 2038void
1380ev_sleep (ev_tstamp delay) EV_THROW 2039ev_sleep (ev_tstamp delay) EV_NOEXCEPT
1381{ 2040{
1382 if (delay > 0.) 2041 if (delay > EV_TS_CONST (0.))
1383 { 2042 {
1384#if EV_USE_NANOSLEEP 2043#if EV_USE_NANOSLEEP
1385 struct timespec ts; 2044 struct timespec ts;
1386 2045
1387 EV_TS_SET (ts, delay); 2046 EV_TS_SET (ts, delay);
1388 nanosleep (&ts, 0); 2047 nanosleep (&ts, 0);
1389#elif defined _WIN32 2048#elif defined _WIN32
2049 /* maybe this should round up, as ms is very low resolution */
2050 /* compared to select (µs) or nanosleep (ns) */
1390 Sleep ((unsigned long)(delay * 1e3)); 2051 Sleep ((unsigned long)(EV_TS_TO_MSEC (delay)));
1391#else 2052#else
1392 struct timeval tv; 2053 struct timeval tv;
1393 2054
1394 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 2055 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
1395 /* something not guaranteed by newer posix versions, but guaranteed */ 2056 /* something not guaranteed by newer posix versions, but guaranteed */
… …
1425 } 2086 }
1426 2087
1427 return ncur; 2088 return ncur;
1428} 2089}
1429 2090
1430static void * noinline ecb_cold 2091ecb_noinline ecb_cold
2092static void *
1431array_realloc (int elem, void *base, int *cur, int cnt) 2093array_realloc (int elem, void *base, int *cur, int cnt)
1432{ 2094{
1433 *cur = array_nextsize (elem, *cur, cnt); 2095 *cur = array_nextsize (elem, *cur, cnt);
1434 return ev_realloc (base, elem * *cur); 2096 return ev_realloc (base, elem * *cur);
1435} 2097}
1436 2098
2099#define array_needsize_noinit(base,offset,count)
2100
1437#define array_init_zero(base,count) \ 2101#define array_needsize_zerofill(base,offset,count) \
1438 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2102 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
1439 2103
1440#define array_needsize(type,base,cur,cnt,init) \ 2104#define array_needsize(type,base,cur,cnt,init) \
1441 if (expect_false ((cnt) > (cur))) \ 2105 if (ecb_expect_false ((cnt) > (cur))) \
1442 { \ 2106 { \
1443 int ecb_unused ocur_ = (cur); \ 2107 ecb_unused int ocur_ = (cur); \
1444 (base) = (type *)array_realloc \ 2108 (base) = (type *)array_realloc \
1445 (sizeof (type), (base), &(cur), (cnt)); \ 2109 (sizeof (type), (base), &(cur), (cnt)); \
1446 init ((base) + (ocur_), (cur) - ocur_); \ 2110 init ((base), ocur_, ((cur) - ocur_)); \
1447 } 2111 }
1448 2112
1449#if 0 2113#if 0
1450#define array_slim(type,stem) \ 2114#define array_slim(type,stem) \
1451 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2115 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
1460 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2124 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
1461 2125
1462/*****************************************************************************/ 2126/*****************************************************************************/
1463 2127
1464/* dummy callback for pending events */ 2128/* dummy callback for pending events */
1465static void noinline 2129ecb_noinline
2130static void
1466pendingcb (EV_P_ ev_prepare *w, int revents) 2131pendingcb (EV_P_ ev_prepare *w, int revents)
1467{ 2132{
1468} 2133}
1469 2134
1470void noinline 2135ecb_noinline
2136void
1471ev_feed_event (EV_P_ void *w, int revents) EV_THROW 2137ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
1472{ 2138{
1473 W w_ = (W)w; 2139 W w_ = (W)w;
1474 int pri = ABSPRI (w_); 2140 int pri = ABSPRI (w_);
1475 2141
1476 if (expect_false (w_->pending)) 2142 if (ecb_expect_false (w_->pending))
1477 pendings [pri][w_->pending - 1].events |= revents; 2143 pendings [pri][w_->pending - 1].events |= revents;
1478 else 2144 else
1479 { 2145 {
1480 w_->pending = ++pendingcnt [pri]; 2146 w_->pending = ++pendingcnt [pri];
1481 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2147 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
1482 pendings [pri][w_->pending - 1].w = w_; 2148 pendings [pri][w_->pending - 1].w = w_;
1483 pendings [pri][w_->pending - 1].events = revents; 2149 pendings [pri][w_->pending - 1].events = revents;
1484 } 2150 }
1485 2151
1486 pendingpri = NUMPRI - 1; 2152 pendingpri = NUMPRI - 1;
1487} 2153}
1488 2154
1489inline_speed void 2155inline_speed void
1490feed_reverse (EV_P_ W w) 2156feed_reverse (EV_P_ W w)
1491{ 2157{
1492 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2158 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
1493 rfeeds [rfeedcnt++] = w; 2159 rfeeds [rfeedcnt++] = w;
1494} 2160}
1495 2161
1496inline_size void 2162inline_size void
1497feed_reverse_done (EV_P_ int revents) 2163feed_reverse_done (EV_P_ int revents)
… …
1532inline_speed void 2198inline_speed void
1533fd_event (EV_P_ int fd, int revents) 2199fd_event (EV_P_ int fd, int revents)
1534{ 2200{
1535 ANFD *anfd = anfds + fd; 2201 ANFD *anfd = anfds + fd;
1536 2202
1537 if (expect_true (!anfd->reify)) 2203 if (ecb_expect_true (!anfd->reify))
1538 fd_event_nocheck (EV_A_ fd, revents); 2204 fd_event_nocheck (EV_A_ fd, revents);
1539} 2205}
1540 2206
1541void 2207void
1542ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW 2208ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
1543{ 2209{
1544 if (fd >= 0 && fd < anfdmax) 2210 if (fd >= 0 && fd < anfdmax)
1545 fd_event_nocheck (EV_A_ fd, revents); 2211 fd_event_nocheck (EV_A_ fd, revents);
1546} 2212}
1547 2213
… …
1584 ev_io *w; 2250 ev_io *w;
1585 2251
1586 unsigned char o_events = anfd->events; 2252 unsigned char o_events = anfd->events;
1587 unsigned char o_reify = anfd->reify; 2253 unsigned char o_reify = anfd->reify;
1588 2254
1589 anfd->reify = 0; 2255 anfd->reify = 0;
1590 2256
1591 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 2257 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
1592 { 2258 {
1593 anfd->events = 0; 2259 anfd->events = 0;
1594 2260
1595 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2261 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1596 anfd->events |= (unsigned char)w->events; 2262 anfd->events |= (unsigned char)w->events;
… …
1605 2271
1606 fdchangecnt = 0; 2272 fdchangecnt = 0;
1607} 2273}
1608 2274
1609/* something about the given fd changed */ 2275/* something about the given fd changed */
1610inline_size void 2276inline_size
2277void
1611fd_change (EV_P_ int fd, int flags) 2278fd_change (EV_P_ int fd, int flags)
1612{ 2279{
1613 unsigned char reify = anfds [fd].reify; 2280 unsigned char reify = anfds [fd].reify;
1614 anfds [fd].reify |= flags; 2281 anfds [fd].reify |= flags;
1615 2282
1616 if (expect_true (!reify)) 2283 if (ecb_expect_true (!reify))
1617 { 2284 {
1618 ++fdchangecnt; 2285 ++fdchangecnt;
1619 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2286 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
1620 fdchanges [fdchangecnt - 1] = fd; 2287 fdchanges [fdchangecnt - 1] = fd;
1621 } 2288 }
1622} 2289}
1623 2290
1624/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2291/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1625inline_speed void ecb_cold 2292inline_speed ecb_cold void
1626fd_kill (EV_P_ int fd) 2293fd_kill (EV_P_ int fd)
1627{ 2294{
1628 ev_io *w; 2295 ev_io *w;
1629 2296
1630 while ((w = (ev_io *)anfds [fd].head)) 2297 while ((w = (ev_io *)anfds [fd].head))
… …
1633 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2300 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1634 } 2301 }
1635} 2302}
1636 2303
1637/* check whether the given fd is actually valid, for error recovery */ 2304/* check whether the given fd is actually valid, for error recovery */
1638inline_size int ecb_cold 2305inline_size ecb_cold int
1639fd_valid (int fd) 2306fd_valid (int fd)
1640{ 2307{
1641#ifdef _WIN32 2308#ifdef _WIN32
1642 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2309 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1643#else 2310#else
1644 return fcntl (fd, F_GETFD) != -1; 2311 return fcntl (fd, F_GETFD) != -1;
1645#endif 2312#endif
1646} 2313}
1647 2314
1648/* called on EBADF to verify fds */ 2315/* called on EBADF to verify fds */
1649static void noinline ecb_cold 2316ecb_noinline ecb_cold
2317static void
1650fd_ebadf (EV_P) 2318fd_ebadf (EV_P)
1651{ 2319{
1652 int fd; 2320 int fd;
1653 2321
1654 for (fd = 0; fd < anfdmax; ++fd) 2322 for (fd = 0; fd < anfdmax; ++fd)
… …
1656 if (!fd_valid (fd) && errno == EBADF) 2324 if (!fd_valid (fd) && errno == EBADF)
1657 fd_kill (EV_A_ fd); 2325 fd_kill (EV_A_ fd);
1658} 2326}
1659 2327
1660/* called on ENOMEM in select/poll to kill some fds and retry */ 2328/* called on ENOMEM in select/poll to kill some fds and retry */
1661static void noinline ecb_cold 2329ecb_noinline ecb_cold
2330static void
1662fd_enomem (EV_P) 2331fd_enomem (EV_P)
1663{ 2332{
1664 int fd; 2333 int fd;
1665 2334
1666 for (fd = anfdmax; fd--; ) 2335 for (fd = anfdmax; fd--; )
… …
1670 break; 2339 break;
1671 } 2340 }
1672} 2341}
1673 2342
1674/* usually called after fork if backend needs to re-arm all fds from scratch */ 2343/* usually called after fork if backend needs to re-arm all fds from scratch */
1675static void noinline 2344ecb_noinline
2345static void
1676fd_rearm_all (EV_P) 2346fd_rearm_all (EV_P)
1677{ 2347{
1678 int fd; 2348 int fd;
1679 2349
1680 for (fd = 0; fd < anfdmax; ++fd) 2350 for (fd = 0; fd < anfdmax; ++fd)
… …
1733 ev_tstamp minat; 2403 ev_tstamp minat;
1734 ANHE *minpos; 2404 ANHE *minpos;
1735 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2405 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1736 2406
1737 /* find minimum child */ 2407 /* find minimum child */
1738 if (expect_true (pos + DHEAP - 1 < E)) 2408 if (ecb_expect_true (pos + DHEAP - 1 < E))
1739 { 2409 {
1740 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2410 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1741 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2411 if ( minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1742 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2412 if ( minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1743 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2413 if ( minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1744 } 2414 }
1745 else if (pos < E) 2415 else if (pos < E)
1746 { 2416 {
1747 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2417 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1748 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2418 if (pos + 1 < E && minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1749 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2419 if (pos + 2 < E && minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1750 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2420 if (pos + 3 < E && minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1751 } 2421 }
1752 else 2422 else
1753 break; 2423 break;
1754 2424
1755 if (ANHE_at (he) <= minat) 2425 if (ANHE_at (he) <= minat)
… …
1763 2433
1764 heap [k] = he; 2434 heap [k] = he;
1765 ev_active (ANHE_w (he)) = k; 2435 ev_active (ANHE_w (he)) = k;
1766} 2436}
1767 2437
1768#else /* 4HEAP */ 2438#else /* not 4HEAP */
1769 2439
1770#define HEAP0 1 2440#define HEAP0 1
1771#define HPARENT(k) ((k) >> 1) 2441#define HPARENT(k) ((k) >> 1)
1772#define UPHEAP_DONE(p,k) (!(p)) 2442#define UPHEAP_DONE(p,k) (!(p))
1773 2443
… …
1861 2531
1862/*****************************************************************************/ 2532/*****************************************************************************/
1863 2533
1864#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2534#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1865 2535
1866static void noinline ecb_cold 2536ecb_noinline ecb_cold
2537static void
1867evpipe_init (EV_P) 2538evpipe_init (EV_P)
1868{ 2539{
1869 if (!ev_is_active (&pipe_w)) 2540 if (!ev_is_active (&pipe_w))
1870 { 2541 {
2542 int fds [2];
2543
1871# if EV_USE_EVENTFD 2544# if EV_USE_EVENTFD
2545 fds [0] = -1;
1872 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2546 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1873 if (evfd < 0 && errno == EINVAL) 2547 if (fds [1] < 0 && errno == EINVAL)
1874 evfd = eventfd (0, 0); 2548 fds [1] = eventfd (0, 0);
1875 2549
1876 if (evfd >= 0) 2550 if (fds [1] < 0)
1877 {
1878 evpipe [0] = -1;
1879 fd_intern (evfd); /* doing it twice doesn't hurt */
1880 ev_io_set (&pipe_w, evfd, EV_READ);
1881 }
1882 else
1883# endif 2551# endif
1884 { 2552 {
1885 while (pipe (evpipe)) 2553 while (pipe (fds))
1886 ev_syserr ("(libev) error creating signal/async pipe"); 2554 ev_syserr ("(libev) error creating signal/async pipe");
1887 2555
1888 fd_intern (evpipe [0]); 2556 fd_intern (fds [0]);
1889 fd_intern (evpipe [1]);
1890 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1891 } 2557 }
1892 2558
2559 evpipe [0] = fds [0];
2560
2561 if (evpipe [1] < 0)
2562 evpipe [1] = fds [1]; /* first call, set write fd */
2563 else
2564 {
2565 /* on subsequent calls, do not change evpipe [1] */
2566 /* so that evpipe_write can always rely on its value. */
2567 /* this branch does not do anything sensible on windows, */
2568 /* so must not be executed on windows */
2569
2570 dup2 (fds [1], evpipe [1]);
2571 close (fds [1]);
2572 }
2573
2574 fd_intern (evpipe [1]);
2575
2576 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
1893 ev_io_start (EV_A_ &pipe_w); 2577 ev_io_start (EV_A_ &pipe_w);
1894 ev_unref (EV_A); /* watcher should not keep loop alive */ 2578 ev_unref (EV_A); /* watcher should not keep loop alive */
1895 } 2579 }
1896} 2580}
1897 2581
1898inline_speed void 2582inline_speed void
1899evpipe_write (EV_P_ EV_ATOMIC_T *flag) 2583evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1900{ 2584{
1901 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */ 2585 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1902 2586
1903 if (expect_true (*flag)) 2587 if (ecb_expect_true (*flag))
1904 return; 2588 return;
1905 2589
1906 *flag = 1; 2590 *flag = 1;
1907 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */ 2591 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1908 2592
… …
1918 ECB_MEMORY_FENCE_RELEASE; 2602 ECB_MEMORY_FENCE_RELEASE;
1919 2603
1920 old_errno = errno; /* save errno because write will clobber it */ 2604 old_errno = errno; /* save errno because write will clobber it */
1921 2605
1922#if EV_USE_EVENTFD 2606#if EV_USE_EVENTFD
1923 if (evfd >= 0) 2607 if (evpipe [0] < 0)
1924 { 2608 {
1925 uint64_t counter = 1; 2609 uint64_t counter = 1;
1926 write (evfd, &counter, sizeof (uint64_t)); 2610 write (evpipe [1], &counter, sizeof (uint64_t));
1927 } 2611 }
1928 else 2612 else
1929#endif 2613#endif
1930 { 2614 {
1931#ifdef _WIN32 2615#ifdef _WIN32
1932 WSABUF buf; 2616 WSABUF buf;
1933 DWORD sent; 2617 DWORD sent;
1934 buf.buf = &buf; 2618 buf.buf = (char *)&buf;
1935 buf.len = 1; 2619 buf.len = 1;
1936 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0); 2620 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1937#else 2621#else
1938 write (evpipe [1], &(evpipe [1]), 1); 2622 write (evpipe [1], &(evpipe [1]), 1);
1939#endif 2623#endif
… …
1951 int i; 2635 int i;
1952 2636
1953 if (revents & EV_READ) 2637 if (revents & EV_READ)
1954 { 2638 {
1955#if EV_USE_EVENTFD 2639#if EV_USE_EVENTFD
1956 if (evfd >= 0) 2640 if (evpipe [0] < 0)
1957 { 2641 {
1958 uint64_t counter; 2642 uint64_t counter;
1959 read (evfd, &counter, sizeof (uint64_t)); 2643 read (evpipe [1], &counter, sizeof (uint64_t));
1960 } 2644 }
1961 else 2645 else
1962#endif 2646#endif
1963 { 2647 {
1964 char dummy[4]; 2648 char dummy[4];
… …
1985 sig_pending = 0; 2669 sig_pending = 0;
1986 2670
1987 ECB_MEMORY_FENCE; 2671 ECB_MEMORY_FENCE;
1988 2672
1989 for (i = EV_NSIG - 1; i--; ) 2673 for (i = EV_NSIG - 1; i--; )
1990 if (expect_false (signals [i].pending)) 2674 if (ecb_expect_false (signals [i].pending))
1991 ev_feed_signal_event (EV_A_ i + 1); 2675 ev_feed_signal_event (EV_A_ i + 1);
1992 } 2676 }
1993#endif 2677#endif
1994 2678
1995#if EV_ASYNC_ENABLE 2679#if EV_ASYNC_ENABLE
… …
2011} 2695}
2012 2696
2013/*****************************************************************************/ 2697/*****************************************************************************/
2014 2698
2015void 2699void
2016ev_feed_signal (int signum) EV_THROW 2700ev_feed_signal (int signum) EV_NOEXCEPT
2017{ 2701{
2018#if EV_MULTIPLICITY 2702#if EV_MULTIPLICITY
2703 EV_P;
2704 ECB_MEMORY_FENCE_ACQUIRE;
2019 EV_P = signals [signum - 1].loop; 2705 EV_A = signals [signum - 1].loop;
2020 2706
2021 if (!EV_A) 2707 if (!EV_A)
2022 return; 2708 return;
2023#endif 2709#endif
2024 2710
2025 if (!ev_active (&pipe_w))
2026 return;
2027
2028 signals [signum - 1].pending = 1; 2711 signals [signum - 1].pending = 1;
2029 evpipe_write (EV_A_ &sig_pending); 2712 evpipe_write (EV_A_ &sig_pending);
2030} 2713}
2031 2714
2032static void 2715static void
… …
2037#endif 2720#endif
2038 2721
2039 ev_feed_signal (signum); 2722 ev_feed_signal (signum);
2040} 2723}
2041 2724
2042void noinline 2725ecb_noinline
2726void
2043ev_feed_signal_event (EV_P_ int signum) EV_THROW 2727ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
2044{ 2728{
2045 WL w; 2729 WL w;
2046 2730
2047 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2731 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
2048 return; 2732 return;
2049 2733
2050 --signum; 2734 --signum;
2051 2735
2052#if EV_MULTIPLICITY 2736#if EV_MULTIPLICITY
2053 /* it is permissible to try to feed a signal to the wrong loop */ 2737 /* it is permissible to try to feed a signal to the wrong loop */
2054 /* or, likely more useful, feeding a signal nobody is waiting for */ 2738 /* or, likely more useful, feeding a signal nobody is waiting for */
2055 2739
2056 if (expect_false (signals [signum].loop != EV_A)) 2740 if (ecb_expect_false (signals [signum].loop != EV_A))
2057 return; 2741 return;
2058#endif 2742#endif
2059 2743
2060 signals [signum].pending = 0; 2744 signals [signum].pending = 0;
2061 ECB_MEMORY_FENCE_RELEASE; 2745 ECB_MEMORY_FENCE_RELEASE;
… …
2157# include "ev_kqueue.c" 2841# include "ev_kqueue.c"
2158#endif 2842#endif
2159#if EV_USE_EPOLL 2843#if EV_USE_EPOLL
2160# include "ev_epoll.c" 2844# include "ev_epoll.c"
2161#endif 2845#endif
2846#if EV_USE_LINUXAIO
2847# include "ev_linuxaio.c"
2848#endif
2849#if EV_USE_IOURING
2850# include "ev_iouring.c"
2851#endif
2162#if EV_USE_POLL 2852#if EV_USE_POLL
2163# include "ev_poll.c" 2853# include "ev_poll.c"
2164#endif 2854#endif
2165#if EV_USE_SELECT 2855#if EV_USE_SELECT
2166# include "ev_select.c" 2856# include "ev_select.c"
2167#endif 2857#endif
2168 2858
2169int ecb_cold 2859ecb_cold int
2170ev_version_major (void) EV_THROW 2860ev_version_major (void) EV_NOEXCEPT
2171{ 2861{
2172 return EV_VERSION_MAJOR; 2862 return EV_VERSION_MAJOR;
2173} 2863}
2174 2864
2175int ecb_cold 2865ecb_cold int
2176ev_version_minor (void) EV_THROW 2866ev_version_minor (void) EV_NOEXCEPT
2177{ 2867{
2178 return EV_VERSION_MINOR; 2868 return EV_VERSION_MINOR;
2179} 2869}
2180 2870
2181/* return true if we are running with elevated privileges and should ignore env variables */ 2871/* return true if we are running with elevated privileges and should ignore env variables */
2182int inline_size ecb_cold 2872inline_size ecb_cold int
2183enable_secure (void) 2873enable_secure (void)
2184{ 2874{
2185#ifdef _WIN32 2875#ifdef _WIN32
2186 return 0; 2876 return 0;
2187#else 2877#else
2188 return getuid () != geteuid () 2878 return getuid () != geteuid ()
2189 || getgid () != getegid (); 2879 || getgid () != getegid ();
2190#endif 2880#endif
2191} 2881}
2192 2882
2193unsigned int ecb_cold 2883ecb_cold
2884unsigned int
2194ev_supported_backends (void) EV_THROW 2885ev_supported_backends (void) EV_NOEXCEPT
2195{ 2886{
2196 unsigned int flags = 0; 2887 unsigned int flags = 0;
2197 2888
2198 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2889 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2199 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2890 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
2200 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2891 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2892 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
2893 if (EV_USE_IOURING ) flags |= EVBACKEND_IOURING;
2201 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2894 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
2202 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2895 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
2203 2896
2204 return flags; 2897 return flags;
2205} 2898}
2206 2899
2207unsigned int ecb_cold 2900ecb_cold
2901unsigned int
2208ev_recommended_backends (void) EV_THROW 2902ev_recommended_backends (void) EV_NOEXCEPT
2209{ 2903{
2210 unsigned int flags = ev_supported_backends (); 2904 unsigned int flags = ev_supported_backends ();
2211 2905
2212#ifndef __NetBSD__ 2906#ifndef __NetBSD__
2213 /* kqueue is borked on everything but netbsd apparently */ 2907 /* kqueue is borked on everything but netbsd apparently */
… …
2221#endif 2915#endif
2222#ifdef __FreeBSD__ 2916#ifdef __FreeBSD__
2223 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ 2917 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2224#endif 2918#endif
2225 2919
2920 /* TODO: linuxaio is very experimental */
2921#if !EV_RECOMMEND_LINUXAIO
2922 flags &= ~EVBACKEND_LINUXAIO;
2923#endif
2924 /* TODO: linuxaio is super experimental */
2925#if !EV_RECOMMEND_IOURING
2926 flags &= ~EVBACKEND_IOURING;
2927#endif
2928
2226 return flags; 2929 return flags;
2227} 2930}
2228 2931
2229unsigned int ecb_cold 2932ecb_cold
2933unsigned int
2230ev_embeddable_backends (void) EV_THROW 2934ev_embeddable_backends (void) EV_NOEXCEPT
2231{ 2935{
2232 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2936 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2233 2937
2234 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2938 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2235 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 2939 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2236 flags &= ~EVBACKEND_EPOLL; 2940 flags &= ~EVBACKEND_EPOLL;
2237 2941
2942 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
2943
2944 /* EVBACKEND_IOURING is practically embeddable, but the current implementation is not
2945 * because our backend_fd is the epoll fd we need as fallback.
2946 * if the kernel ever is fixed, this might change...
2947 */
2948
2238 return flags; 2949 return flags;
2239} 2950}
2240 2951
2241unsigned int 2952unsigned int
2242ev_backend (EV_P) EV_THROW 2953ev_backend (EV_P) EV_NOEXCEPT
2243{ 2954{
2244 return backend; 2955 return backend;
2245} 2956}
2246 2957
2247#if EV_FEATURE_API 2958#if EV_FEATURE_API
2248unsigned int 2959unsigned int
2249ev_iteration (EV_P) EV_THROW 2960ev_iteration (EV_P) EV_NOEXCEPT
2250{ 2961{
2251 return loop_count; 2962 return loop_count;
2252} 2963}
2253 2964
2254unsigned int 2965unsigned int
2255ev_depth (EV_P) EV_THROW 2966ev_depth (EV_P) EV_NOEXCEPT
2256{ 2967{
2257 return loop_depth; 2968 return loop_depth;
2258} 2969}
2259 2970
2260void 2971void
2261ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW 2972ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2262{ 2973{
2263 io_blocktime = interval; 2974 io_blocktime = interval;
2264} 2975}
2265 2976
2266void 2977void
2267ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW 2978ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2268{ 2979{
2269 timeout_blocktime = interval; 2980 timeout_blocktime = interval;
2270} 2981}
2271 2982
2272void 2983void
2273ev_set_userdata (EV_P_ void *data) EV_THROW 2984ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2274{ 2985{
2275 userdata = data; 2986 userdata = data;
2276} 2987}
2277 2988
2278void * 2989void *
2279ev_userdata (EV_P) EV_THROW 2990ev_userdata (EV_P) EV_NOEXCEPT
2280{ 2991{
2281 return userdata; 2992 return userdata;
2282} 2993}
2283 2994
2284void 2995void
2285ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW 2996ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
2286{ 2997{
2287 invoke_cb = invoke_pending_cb; 2998 invoke_cb = invoke_pending_cb;
2288} 2999}
2289 3000
2290void 3001void
2291ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW 3002ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
2292{ 3003{
2293 release_cb = release; 3004 release_cb = release;
2294 acquire_cb = acquire; 3005 acquire_cb = acquire;
2295} 3006}
2296#endif 3007#endif
2297 3008
2298/* initialise a loop structure, must be zero-initialised */ 3009/* initialise a loop structure, must be zero-initialised */
2299static void noinline ecb_cold 3010ecb_noinline ecb_cold
3011static void
2300loop_init (EV_P_ unsigned int flags) EV_THROW 3012loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
2301{ 3013{
2302 if (!backend) 3014 if (!backend)
2303 { 3015 {
2304 origflags = flags; 3016 origflags = flags;
2305 3017
… …
2350#if EV_ASYNC_ENABLE 3062#if EV_ASYNC_ENABLE
2351 async_pending = 0; 3063 async_pending = 0;
2352#endif 3064#endif
2353 pipe_write_skipped = 0; 3065 pipe_write_skipped = 0;
2354 pipe_write_wanted = 0; 3066 pipe_write_wanted = 0;
3067 evpipe [0] = -1;
3068 evpipe [1] = -1;
2355#if EV_USE_INOTIFY 3069#if EV_USE_INOTIFY
2356 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3070 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2357#endif 3071#endif
2358#if EV_USE_SIGNALFD 3072#if EV_USE_SIGNALFD
2359 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 3073 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
… …
2361 3075
2362 if (!(flags & EVBACKEND_MASK)) 3076 if (!(flags & EVBACKEND_MASK))
2363 flags |= ev_recommended_backends (); 3077 flags |= ev_recommended_backends ();
2364 3078
2365#if EV_USE_IOCP 3079#if EV_USE_IOCP
2366 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 3080 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2367#endif 3081#endif
2368#if EV_USE_PORT 3082#if EV_USE_PORT
2369 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3083 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
2370#endif 3084#endif
2371#if EV_USE_KQUEUE 3085#if EV_USE_KQUEUE
2372 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 3086 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
3087#endif
3088#if EV_USE_IOURING
3089 if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
3090#endif
3091#if EV_USE_LINUXAIO
3092 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
2373#endif 3093#endif
2374#if EV_USE_EPOLL 3094#if EV_USE_EPOLL
2375 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3095 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
2376#endif 3096#endif
2377#if EV_USE_POLL 3097#if EV_USE_POLL
2378 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3098 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
2379#endif 3099#endif
2380#if EV_USE_SELECT 3100#if EV_USE_SELECT
2381 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3101 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
2382#endif 3102#endif
2383 3103
2384 ev_prepare_init (&pending_w, pendingcb); 3104 ev_prepare_init (&pending_w, pendingcb);
2385 3105
2386#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3106#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
2389#endif 3109#endif
2390 } 3110 }
2391} 3111}
2392 3112
2393/* free up a loop structure */ 3113/* free up a loop structure */
2394void ecb_cold 3114ecb_cold
3115void
2395ev_loop_destroy (EV_P) 3116ev_loop_destroy (EV_P)
2396{ 3117{
2397 int i; 3118 int i;
2398 3119
2399#if EV_MULTIPLICITY 3120#if EV_MULTIPLICITY
… …
2402 return; 3123 return;
2403#endif 3124#endif
2404 3125
2405#if EV_CLEANUP_ENABLE 3126#if EV_CLEANUP_ENABLE
2406 /* queue cleanup watchers (and execute them) */ 3127 /* queue cleanup watchers (and execute them) */
2407 if (expect_false (cleanupcnt)) 3128 if (ecb_expect_false (cleanupcnt))
2408 { 3129 {
2409 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); 3130 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2410 EV_INVOKE_PENDING; 3131 EV_INVOKE_PENDING;
2411 } 3132 }
2412#endif 3133#endif
… …
2422 if (ev_is_active (&pipe_w)) 3143 if (ev_is_active (&pipe_w))
2423 { 3144 {
2424 /*ev_ref (EV_A);*/ 3145 /*ev_ref (EV_A);*/
2425 /*ev_io_stop (EV_A_ &pipe_w);*/ 3146 /*ev_io_stop (EV_A_ &pipe_w);*/
2426 3147
2427#if EV_USE_EVENTFD
2428 if (evfd >= 0)
2429 close (evfd);
2430#endif
2431
2432 if (evpipe [0] >= 0)
2433 {
2434 EV_WIN32_CLOSE_FD (evpipe [0]); 3148 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2435 EV_WIN32_CLOSE_FD (evpipe [1]); 3149 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2436 }
2437 } 3150 }
2438 3151
2439#if EV_USE_SIGNALFD 3152#if EV_USE_SIGNALFD
2440 if (ev_is_active (&sigfd_w)) 3153 if (ev_is_active (&sigfd_w))
2441 close (sigfd); 3154 close (sigfd);
… …
2448 3161
2449 if (backend_fd >= 0) 3162 if (backend_fd >= 0)
2450 close (backend_fd); 3163 close (backend_fd);
2451 3164
2452#if EV_USE_IOCP 3165#if EV_USE_IOCP
2453 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3166 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2454#endif 3167#endif
2455#if EV_USE_PORT 3168#if EV_USE_PORT
2456 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3169 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
2457#endif 3170#endif
2458#if EV_USE_KQUEUE 3171#if EV_USE_KQUEUE
2459 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3172 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3173#endif
3174#if EV_USE_IOURING
3175 if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
3176#endif
3177#if EV_USE_LINUXAIO
3178 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
2460#endif 3179#endif
2461#if EV_USE_EPOLL 3180#if EV_USE_EPOLL
2462 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3181 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
2463#endif 3182#endif
2464#if EV_USE_POLL 3183#if EV_USE_POLL
2465 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3184 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
2466#endif 3185#endif
2467#if EV_USE_SELECT 3186#if EV_USE_SELECT
2468 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3187 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
2469#endif 3188#endif
2470 3189
2471 for (i = NUMPRI; i--; ) 3190 for (i = NUMPRI; i--; )
2472 { 3191 {
2473 array_free (pending, [i]); 3192 array_free (pending, [i]);
… …
2515 3234
2516inline_size void 3235inline_size void
2517loop_fork (EV_P) 3236loop_fork (EV_P)
2518{ 3237{
2519#if EV_USE_PORT 3238#if EV_USE_PORT
2520 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3239 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
2521#endif 3240#endif
2522#if EV_USE_KQUEUE 3241#if EV_USE_KQUEUE
2523 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3242 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3243#endif
3244#if EV_USE_IOURING
3245 if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
3246#endif
3247#if EV_USE_LINUXAIO
3248 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
2524#endif 3249#endif
2525#if EV_USE_EPOLL 3250#if EV_USE_EPOLL
2526 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3251 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
2527#endif 3252#endif
2528#if EV_USE_INOTIFY 3253#if EV_USE_INOTIFY
2529 infy_fork (EV_A); 3254 infy_fork (EV_A);
2530#endif 3255#endif
2531 3256
3257#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2532 if (ev_is_active (&pipe_w)) 3258 if (ev_is_active (&pipe_w) && postfork != 2)
2533 { 3259 {
2534 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 3260 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2535 3261
2536 ev_ref (EV_A); 3262 ev_ref (EV_A);
2537 ev_io_stop (EV_A_ &pipe_w); 3263 ev_io_stop (EV_A_ &pipe_w);
2538 3264
2539#if EV_USE_EVENTFD
2540 if (evfd >= 0)
2541 close (evfd);
2542#endif
2543
2544 if (evpipe [0] >= 0) 3265 if (evpipe [0] >= 0)
2545 {
2546 EV_WIN32_CLOSE_FD (evpipe [0]); 3266 EV_WIN32_CLOSE_FD (evpipe [0]);
2547 EV_WIN32_CLOSE_FD (evpipe [1]);
2548 }
2549 3267
2550#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2551 evpipe_init (EV_A); 3268 evpipe_init (EV_A);
2552 /* now iterate over everything, in case we missed something */ 3269 /* iterate over everything, in case we missed something before */
2553 pipecb (EV_A_ &pipe_w, EV_READ); 3270 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2554#endif
2555 } 3271 }
3272#endif
2556 3273
2557 postfork = 0; 3274 postfork = 0;
2558} 3275}
2559 3276
2560#if EV_MULTIPLICITY 3277#if EV_MULTIPLICITY
2561 3278
3279ecb_cold
2562struct ev_loop * ecb_cold 3280struct ev_loop *
2563ev_loop_new (unsigned int flags) EV_THROW 3281ev_loop_new (unsigned int flags) EV_NOEXCEPT
2564{ 3282{
2565 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3283 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2566 3284
2567 memset (EV_A, 0, sizeof (struct ev_loop)); 3285 memset (EV_A, 0, sizeof (struct ev_loop));
2568 loop_init (EV_A_ flags); 3286 loop_init (EV_A_ flags);
… …
2575} 3293}
2576 3294
2577#endif /* multiplicity */ 3295#endif /* multiplicity */
2578 3296
2579#if EV_VERIFY 3297#if EV_VERIFY
2580static void noinline ecb_cold 3298ecb_noinline ecb_cold
3299static void
2581verify_watcher (EV_P_ W w) 3300verify_watcher (EV_P_ W w)
2582{ 3301{
2583 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3302 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2584 3303
2585 if (w->pending) 3304 if (w->pending)
2586 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3305 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2587} 3306}
2588 3307
2589static void noinline ecb_cold 3308ecb_noinline ecb_cold
3309static void
2590verify_heap (EV_P_ ANHE *heap, int N) 3310verify_heap (EV_P_ ANHE *heap, int N)
2591{ 3311{
2592 int i; 3312 int i;
2593 3313
2594 for (i = HEAP0; i < N + HEAP0; ++i) 3314 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2599 3319
2600 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3320 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2601 } 3321 }
2602} 3322}
2603 3323
2604static void noinline ecb_cold 3324ecb_noinline ecb_cold
3325static void
2605array_verify (EV_P_ W *ws, int cnt) 3326array_verify (EV_P_ W *ws, int cnt)
2606{ 3327{
2607 while (cnt--) 3328 while (cnt--)
2608 { 3329 {
2609 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3330 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2612} 3333}
2613#endif 3334#endif
2614 3335
2615#if EV_FEATURE_API 3336#if EV_FEATURE_API
2616void ecb_cold 3337void ecb_cold
2617ev_verify (EV_P) EV_THROW 3338ev_verify (EV_P) EV_NOEXCEPT
2618{ 3339{
2619#if EV_VERIFY 3340#if EV_VERIFY
2620 int i; 3341 int i;
2621 WL w, w2; 3342 WL w, w2;
2622 3343
… …
2698#endif 3419#endif
2699} 3420}
2700#endif 3421#endif
2701 3422
2702#if EV_MULTIPLICITY 3423#if EV_MULTIPLICITY
3424ecb_cold
2703struct ev_loop * ecb_cold 3425struct ev_loop *
2704#else 3426#else
2705int 3427int
2706#endif 3428#endif
2707ev_default_loop (unsigned int flags) EV_THROW 3429ev_default_loop (unsigned int flags) EV_NOEXCEPT
2708{ 3430{
2709 if (!ev_default_loop_ptr) 3431 if (!ev_default_loop_ptr)
2710 { 3432 {
2711#if EV_MULTIPLICITY 3433#if EV_MULTIPLICITY
2712 EV_P = ev_default_loop_ptr = &default_loop_struct; 3434 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2731 3453
2732 return ev_default_loop_ptr; 3454 return ev_default_loop_ptr;
2733} 3455}
2734 3456
2735void 3457void
2736ev_loop_fork (EV_P) EV_THROW 3458ev_loop_fork (EV_P) EV_NOEXCEPT
2737{ 3459{
2738 postfork = 1; 3460 postfork = 1;
2739} 3461}
2740 3462
2741/*****************************************************************************/ 3463/*****************************************************************************/
… …
2745{ 3467{
2746 EV_CB_INVOKE ((W)w, revents); 3468 EV_CB_INVOKE ((W)w, revents);
2747} 3469}
2748 3470
2749unsigned int 3471unsigned int
2750ev_pending_count (EV_P) EV_THROW 3472ev_pending_count (EV_P) EV_NOEXCEPT
2751{ 3473{
2752 int pri; 3474 int pri;
2753 unsigned int count = 0; 3475 unsigned int count = 0;
2754 3476
2755 for (pri = NUMPRI; pri--; ) 3477 for (pri = NUMPRI; pri--; )
2756 count += pendingcnt [pri]; 3478 count += pendingcnt [pri];
2757 3479
2758 return count; 3480 return count;
2759} 3481}
2760 3482
2761void noinline 3483ecb_noinline
3484void
2762ev_invoke_pending (EV_P) 3485ev_invoke_pending (EV_P)
2763{ 3486{
2764 for (pendingpri = NUMPRI; pendingpri--; ) /* pendingpri is modified during the loop */ 3487 pendingpri = NUMPRI;
3488
3489 do
3490 {
3491 --pendingpri;
3492
3493 /* pendingpri possibly gets modified in the inner loop */
2765 while (pendingcnt [pendingpri]) 3494 while (pendingcnt [pendingpri])
2766 { 3495 {
2767 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri]; 3496 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2768 3497
2769 p->w->pending = 0; 3498 p->w->pending = 0;
2770 EV_CB_INVOKE (p->w, p->events); 3499 EV_CB_INVOKE (p->w, p->events);
2771 EV_FREQUENT_CHECK; 3500 EV_FREQUENT_CHECK;
2772 } 3501 }
3502 }
3503 while (pendingpri);
2773} 3504}
2774 3505
2775#if EV_IDLE_ENABLE 3506#if EV_IDLE_ENABLE
2776/* make idle watchers pending. this handles the "call-idle */ 3507/* make idle watchers pending. this handles the "call-idle */
2777/* only when higher priorities are idle" logic */ 3508/* only when higher priorities are idle" logic */
2778inline_size void 3509inline_size void
2779idle_reify (EV_P) 3510idle_reify (EV_P)
2780{ 3511{
2781 if (expect_false (idleall)) 3512 if (ecb_expect_false (idleall))
2782 { 3513 {
2783 int pri; 3514 int pri;
2784 3515
2785 for (pri = NUMPRI; pri--; ) 3516 for (pri = NUMPRI; pri--; )
2786 { 3517 {
… …
2816 { 3547 {
2817 ev_at (w) += w->repeat; 3548 ev_at (w) += w->repeat;
2818 if (ev_at (w) < mn_now) 3549 if (ev_at (w) < mn_now)
2819 ev_at (w) = mn_now; 3550 ev_at (w) = mn_now;
2820 3551
2821 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 3552 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > EV_TS_CONST (0.)));
2822 3553
2823 ANHE_at_cache (timers [HEAP0]); 3554 ANHE_at_cache (timers [HEAP0]);
2824 downheap (timers, timercnt, HEAP0); 3555 downheap (timers, timercnt, HEAP0);
2825 } 3556 }
2826 else 3557 else
… …
2835 } 3566 }
2836} 3567}
2837 3568
2838#if EV_PERIODIC_ENABLE 3569#if EV_PERIODIC_ENABLE
2839 3570
2840static void noinline 3571ecb_noinline
3572static void
2841periodic_recalc (EV_P_ ev_periodic *w) 3573periodic_recalc (EV_P_ ev_periodic *w)
2842{ 3574{
2843 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3575 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2844 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); 3576 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2845 3577
… …
2847 while (at <= ev_rt_now) 3579 while (at <= ev_rt_now)
2848 { 3580 {
2849 ev_tstamp nat = at + w->interval; 3581 ev_tstamp nat = at + w->interval;
2850 3582
2851 /* when resolution fails us, we use ev_rt_now */ 3583 /* when resolution fails us, we use ev_rt_now */
2852 if (expect_false (nat == at)) 3584 if (ecb_expect_false (nat == at))
2853 { 3585 {
2854 at = ev_rt_now; 3586 at = ev_rt_now;
2855 break; 3587 break;
2856 } 3588 }
2857 3589
… …
2903 } 3635 }
2904} 3636}
2905 3637
2906/* simply recalculate all periodics */ 3638/* simply recalculate all periodics */
2907/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3639/* TODO: maybe ensure that at least one event happens when jumping forward? */
2908static void noinline ecb_cold 3640ecb_noinline ecb_cold
3641static void
2909periodics_reschedule (EV_P) 3642periodics_reschedule (EV_P)
2910{ 3643{
2911 int i; 3644 int i;
2912 3645
2913 /* adjust periodics after time jump */ 3646 /* adjust periodics after time jump */
… …
2926 reheap (periodics, periodiccnt); 3659 reheap (periodics, periodiccnt);
2927} 3660}
2928#endif 3661#endif
2929 3662
2930/* adjust all timers by a given offset */ 3663/* adjust all timers by a given offset */
2931static void noinline ecb_cold 3664ecb_noinline ecb_cold
3665static void
2932timers_reschedule (EV_P_ ev_tstamp adjust) 3666timers_reschedule (EV_P_ ev_tstamp adjust)
2933{ 3667{
2934 int i; 3668 int i;
2935 3669
2936 for (i = 0; i < timercnt; ++i) 3670 for (i = 0; i < timercnt; ++i)
… …
2945/* also detect if there was a timejump, and act accordingly */ 3679/* also detect if there was a timejump, and act accordingly */
2946inline_speed void 3680inline_speed void
2947time_update (EV_P_ ev_tstamp max_block) 3681time_update (EV_P_ ev_tstamp max_block)
2948{ 3682{
2949#if EV_USE_MONOTONIC 3683#if EV_USE_MONOTONIC
2950 if (expect_true (have_monotonic)) 3684 if (ecb_expect_true (have_monotonic))
2951 { 3685 {
2952 int i; 3686 int i;
2953 ev_tstamp odiff = rtmn_diff; 3687 ev_tstamp odiff = rtmn_diff;
2954 3688
2955 mn_now = get_clock (); 3689 mn_now = get_clock ();
2956 3690
2957 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3691 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2958 /* interpolate in the meantime */ 3692 /* interpolate in the meantime */
2959 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3693 if (ecb_expect_true (mn_now - now_floor < EV_TS_CONST (MIN_TIMEJUMP * .5)))
2960 { 3694 {
2961 ev_rt_now = rtmn_diff + mn_now; 3695 ev_rt_now = rtmn_diff + mn_now;
2962 return; 3696 return;
2963 } 3697 }
2964 3698
… …
2978 ev_tstamp diff; 3712 ev_tstamp diff;
2979 rtmn_diff = ev_rt_now - mn_now; 3713 rtmn_diff = ev_rt_now - mn_now;
2980 3714
2981 diff = odiff - rtmn_diff; 3715 diff = odiff - rtmn_diff;
2982 3716
2983 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP)) 3717 if (ecb_expect_true ((diff < EV_TS_CONST (0.) ? -diff : diff) < EV_TS_CONST (MIN_TIMEJUMP)))
2984 return; /* all is well */ 3718 return; /* all is well */
2985 3719
2986 ev_rt_now = ev_time (); 3720 ev_rt_now = ev_time ();
2987 mn_now = get_clock (); 3721 mn_now = get_clock ();
2988 now_floor = mn_now; 3722 now_floor = mn_now;
… …
2997 else 3731 else
2998#endif 3732#endif
2999 { 3733 {
3000 ev_rt_now = ev_time (); 3734 ev_rt_now = ev_time ();
3001 3735
3002 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 3736 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + EV_TS_CONST (MIN_TIMEJUMP)))
3003 { 3737 {
3004 /* adjust timers. this is easy, as the offset is the same for all of them */ 3738 /* adjust timers. this is easy, as the offset is the same for all of them */
3005 timers_reschedule (EV_A_ ev_rt_now - mn_now); 3739 timers_reschedule (EV_A_ ev_rt_now - mn_now);
3006#if EV_PERIODIC_ENABLE 3740#if EV_PERIODIC_ENABLE
3007 periodics_reschedule (EV_A); 3741 periodics_reschedule (EV_A);
… …
3030#if EV_VERIFY >= 2 3764#if EV_VERIFY >= 2
3031 ev_verify (EV_A); 3765 ev_verify (EV_A);
3032#endif 3766#endif
3033 3767
3034#ifndef _WIN32 3768#ifndef _WIN32
3035 if (expect_false (curpid)) /* penalise the forking check even more */ 3769 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
3036 if (expect_false (getpid () != curpid)) 3770 if (ecb_expect_false (getpid () != curpid))
3037 { 3771 {
3038 curpid = getpid (); 3772 curpid = getpid ();
3039 postfork = 1; 3773 postfork = 1;
3040 } 3774 }
3041#endif 3775#endif
3042 3776
3043#if EV_FORK_ENABLE 3777#if EV_FORK_ENABLE
3044 /* we might have forked, so queue fork handlers */ 3778 /* we might have forked, so queue fork handlers */
3045 if (expect_false (postfork)) 3779 if (ecb_expect_false (postfork))
3046 if (forkcnt) 3780 if (forkcnt)
3047 { 3781 {
3048 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3782 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
3049 EV_INVOKE_PENDING; 3783 EV_INVOKE_PENDING;
3050 } 3784 }
3051#endif 3785#endif
3052 3786
3053#if EV_PREPARE_ENABLE 3787#if EV_PREPARE_ENABLE
3054 /* queue prepare watchers (and execute them) */ 3788 /* queue prepare watchers (and execute them) */
3055 if (expect_false (preparecnt)) 3789 if (ecb_expect_false (preparecnt))
3056 { 3790 {
3057 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3791 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
3058 EV_INVOKE_PENDING; 3792 EV_INVOKE_PENDING;
3059 } 3793 }
3060#endif 3794#endif
3061 3795
3062 if (expect_false (loop_done)) 3796 if (ecb_expect_false (loop_done))
3063 break; 3797 break;
3064 3798
3065 /* we might have forked, so reify kernel state if necessary */ 3799 /* we might have forked, so reify kernel state if necessary */
3066 if (expect_false (postfork)) 3800 if (ecb_expect_false (postfork))
3067 loop_fork (EV_A); 3801 loop_fork (EV_A);
3068 3802
3069 /* update fd-related kernel structures */ 3803 /* update fd-related kernel structures */
3070 fd_reify (EV_A); 3804 fd_reify (EV_A);
3071 3805
… …
3076 3810
3077 /* remember old timestamp for io_blocktime calculation */ 3811 /* remember old timestamp for io_blocktime calculation */
3078 ev_tstamp prev_mn_now = mn_now; 3812 ev_tstamp prev_mn_now = mn_now;
3079 3813
3080 /* update time to cancel out callback processing overhead */ 3814 /* update time to cancel out callback processing overhead */
3081 time_update (EV_A_ 1e100); 3815 time_update (EV_A_ EV_TS_CONST (EV_TSTAMP_HUGE));
3082 3816
3083 /* from now on, we want a pipe-wake-up */ 3817 /* from now on, we want a pipe-wake-up */
3084 pipe_write_wanted = 1; 3818 pipe_write_wanted = 1;
3085 3819
3086 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */ 3820 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3087 3821
3088 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) 3822 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
3089 { 3823 {
3090 waittime = MAX_BLOCKTIME; 3824 waittime = EV_TS_CONST (MAX_BLOCKTIME);
3091 3825
3092 if (timercnt) 3826 if (timercnt)
3093 { 3827 {
3094 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now; 3828 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
3095 if (waittime > to) waittime = to; 3829 if (waittime > to) waittime = to;
… …
3102 if (waittime > to) waittime = to; 3836 if (waittime > to) waittime = to;
3103 } 3837 }
3104#endif 3838#endif
3105 3839
3106 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3840 /* don't let timeouts decrease the waittime below timeout_blocktime */
3107 if (expect_false (waittime < timeout_blocktime)) 3841 if (ecb_expect_false (waittime < timeout_blocktime))
3108 waittime = timeout_blocktime; 3842 waittime = timeout_blocktime;
3109 3843
3110 /* at this point, we NEED to wait, so we have to ensure */ 3844 /* at this point, we NEED to wait, so we have to ensure */
3111 /* to pass a minimum nonzero value to the backend */ 3845 /* to pass a minimum nonzero value to the backend */
3112 if (expect_false (waittime < backend_mintime)) 3846 if (ecb_expect_false (waittime < backend_mintime))
3113 waittime = backend_mintime; 3847 waittime = backend_mintime;
3114 3848
3115 /* extra check because io_blocktime is commonly 0 */ 3849 /* extra check because io_blocktime is commonly 0 */
3116 if (expect_false (io_blocktime)) 3850 if (ecb_expect_false (io_blocktime))
3117 { 3851 {
3118 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3852 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3119 3853
3120 if (sleeptime > waittime - backend_mintime) 3854 if (sleeptime > waittime - backend_mintime)
3121 sleeptime = waittime - backend_mintime; 3855 sleeptime = waittime - backend_mintime;
3122 3856
3123 if (expect_true (sleeptime > 0.)) 3857 if (ecb_expect_true (sleeptime > EV_TS_CONST (0.)))
3124 { 3858 {
3125 ev_sleep (sleeptime); 3859 ev_sleep (sleeptime);
3126 waittime -= sleeptime; 3860 waittime -= sleeptime;
3127 } 3861 }
3128 } 3862 }
… …
3135 backend_poll (EV_A_ waittime); 3869 backend_poll (EV_A_ waittime);
3136 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3870 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3137 3871
3138 pipe_write_wanted = 0; /* just an optimisation, no fence needed */ 3872 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3139 3873
3140 MEMORY_FENCE_ACQUIRE; 3874 ECB_MEMORY_FENCE_ACQUIRE;
3141 if (pipe_write_skipped) 3875 if (pipe_write_skipped)
3142 { 3876 {
3143 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 3877 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3144 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3878 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3145 } 3879 }
3146 3880
3147
3148 /* update ev_rt_now, do magic */ 3881 /* update ev_rt_now, do magic */
3149 time_update (EV_A_ waittime + sleeptime); 3882 time_update (EV_A_ waittime + sleeptime);
3150 } 3883 }
3151 3884
3152 /* queue pending timers and reschedule them */ 3885 /* queue pending timers and reschedule them */
… …
3160 idle_reify (EV_A); 3893 idle_reify (EV_A);
3161#endif 3894#endif
3162 3895
3163#if EV_CHECK_ENABLE 3896#if EV_CHECK_ENABLE
3164 /* queue check watchers, to be executed first */ 3897 /* queue check watchers, to be executed first */
3165 if (expect_false (checkcnt)) 3898 if (ecb_expect_false (checkcnt))
3166 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3899 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3167#endif 3900#endif
3168 3901
3169 EV_INVOKE_PENDING; 3902 EV_INVOKE_PENDING;
3170 } 3903 }
3171 while (expect_true ( 3904 while (ecb_expect_true (
3172 activecnt 3905 activecnt
3173 && !loop_done 3906 && !loop_done
3174 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) 3907 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
3175 )); 3908 ));
3176 3909
… …
3183 3916
3184 return activecnt; 3917 return activecnt;
3185} 3918}
3186 3919
3187void 3920void
3188ev_break (EV_P_ int how) EV_THROW 3921ev_break (EV_P_ int how) EV_NOEXCEPT
3189{ 3922{
3190 loop_done = how; 3923 loop_done = how;
3191} 3924}
3192 3925
3193void 3926void
3194ev_ref (EV_P) EV_THROW 3927ev_ref (EV_P) EV_NOEXCEPT
3195{ 3928{
3196 ++activecnt; 3929 ++activecnt;
3197} 3930}
3198 3931
3199void 3932void
3200ev_unref (EV_P) EV_THROW 3933ev_unref (EV_P) EV_NOEXCEPT
3201{ 3934{
3202 --activecnt; 3935 --activecnt;
3203} 3936}
3204 3937
3205void 3938void
3206ev_now_update (EV_P) EV_THROW 3939ev_now_update (EV_P) EV_NOEXCEPT
3207{ 3940{
3208 time_update (EV_A_ 1e100); 3941 time_update (EV_A_ EV_TSTAMP_HUGE);
3209} 3942}
3210 3943
3211void 3944void
3212ev_suspend (EV_P) EV_THROW 3945ev_suspend (EV_P) EV_NOEXCEPT
3213{ 3946{
3214 ev_now_update (EV_A); 3947 ev_now_update (EV_A);
3215} 3948}
3216 3949
3217void 3950void
3218ev_resume (EV_P) EV_THROW 3951ev_resume (EV_P) EV_NOEXCEPT
3219{ 3952{
3220 ev_tstamp mn_prev = mn_now; 3953 ev_tstamp mn_prev = mn_now;
3221 3954
3222 ev_now_update (EV_A); 3955 ev_now_update (EV_A);
3223 timers_reschedule (EV_A_ mn_now - mn_prev); 3956 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
3240inline_size void 3973inline_size void
3241wlist_del (WL *head, WL elem) 3974wlist_del (WL *head, WL elem)
3242{ 3975{
3243 while (*head) 3976 while (*head)
3244 { 3977 {
3245 if (expect_true (*head == elem)) 3978 if (ecb_expect_true (*head == elem))
3246 { 3979 {
3247 *head = elem->next; 3980 *head = elem->next;
3248 break; 3981 break;
3249 } 3982 }
3250 3983
… …
3262 w->pending = 0; 3995 w->pending = 0;
3263 } 3996 }
3264} 3997}
3265 3998
3266int 3999int
3267ev_clear_pending (EV_P_ void *w) EV_THROW 4000ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
3268{ 4001{
3269 W w_ = (W)w; 4002 W w_ = (W)w;
3270 int pending = w_->pending; 4003 int pending = w_->pending;
3271 4004
3272 if (expect_true (pending)) 4005 if (ecb_expect_true (pending))
3273 { 4006 {
3274 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4007 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3275 p->w = (W)&pending_w; 4008 p->w = (W)&pending_w;
3276 w_->pending = 0; 4009 w_->pending = 0;
3277 return p->events; 4010 return p->events;
… …
3304 w->active = 0; 4037 w->active = 0;
3305} 4038}
3306 4039
3307/*****************************************************************************/ 4040/*****************************************************************************/
3308 4041
3309void noinline 4042ecb_noinline
4043void
3310ev_io_start (EV_P_ ev_io *w) EV_THROW 4044ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
3311{ 4045{
3312 int fd = w->fd; 4046 int fd = w->fd;
3313 4047
3314 if (expect_false (ev_is_active (w))) 4048 if (ecb_expect_false (ev_is_active (w)))
3315 return; 4049 return;
3316 4050
3317 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4051 assert (("libev: ev_io_start called with negative fd", fd >= 0));
3318 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 4052 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
3319 4053
4054#if EV_VERIFY >= 2
4055 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4056#endif
3320 EV_FREQUENT_CHECK; 4057 EV_FREQUENT_CHECK;
3321 4058
3322 ev_start (EV_A_ (W)w, 1); 4059 ev_start (EV_A_ (W)w, 1);
3323 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4060 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
3324 wlist_add (&anfds[fd].head, (WL)w); 4061 wlist_add (&anfds[fd].head, (WL)w);
3325 4062
3326 /* common bug, apparently */ 4063 /* common bug, apparently */
3327 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w)); 4064 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3328 4065
… …
3330 w->events &= ~EV__IOFDSET; 4067 w->events &= ~EV__IOFDSET;
3331 4068
3332 EV_FREQUENT_CHECK; 4069 EV_FREQUENT_CHECK;
3333} 4070}
3334 4071
3335void noinline 4072ecb_noinline
4073void
3336ev_io_stop (EV_P_ ev_io *w) EV_THROW 4074ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
3337{ 4075{
3338 clear_pending (EV_A_ (W)w); 4076 clear_pending (EV_A_ (W)w);
3339 if (expect_false (!ev_is_active (w))) 4077 if (ecb_expect_false (!ev_is_active (w)))
3340 return; 4078 return;
3341 4079
3342 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4080 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
3343 4081
4082#if EV_VERIFY >= 2
4083 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4084#endif
3344 EV_FREQUENT_CHECK; 4085 EV_FREQUENT_CHECK;
3345 4086
3346 wlist_del (&anfds[w->fd].head, (WL)w); 4087 wlist_del (&anfds[w->fd].head, (WL)w);
3347 ev_stop (EV_A_ (W)w); 4088 ev_stop (EV_A_ (W)w);
3348 4089
3349 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 4090 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3350 4091
3351 EV_FREQUENT_CHECK; 4092 EV_FREQUENT_CHECK;
3352} 4093}
3353 4094
3354void noinline 4095ecb_noinline
4096void
3355ev_timer_start (EV_P_ ev_timer *w) EV_THROW 4097ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
3356{ 4098{
3357 if (expect_false (ev_is_active (w))) 4099 if (ecb_expect_false (ev_is_active (w)))
3358 return; 4100 return;
3359 4101
3360 ev_at (w) += mn_now; 4102 ev_at (w) += mn_now;
3361 4103
3362 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4104 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
3363 4105
3364 EV_FREQUENT_CHECK; 4106 EV_FREQUENT_CHECK;
3365 4107
3366 ++timercnt; 4108 ++timercnt;
3367 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4109 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
3368 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4110 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
3369 ANHE_w (timers [ev_active (w)]) = (WT)w; 4111 ANHE_w (timers [ev_active (w)]) = (WT)w;
3370 ANHE_at_cache (timers [ev_active (w)]); 4112 ANHE_at_cache (timers [ev_active (w)]);
3371 upheap (timers, ev_active (w)); 4113 upheap (timers, ev_active (w));
3372 4114
3373 EV_FREQUENT_CHECK; 4115 EV_FREQUENT_CHECK;
3374 4116
3375 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4117 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
3376} 4118}
3377 4119
3378void noinline 4120ecb_noinline
4121void
3379ev_timer_stop (EV_P_ ev_timer *w) EV_THROW 4122ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
3380{ 4123{
3381 clear_pending (EV_A_ (W)w); 4124 clear_pending (EV_A_ (W)w);
3382 if (expect_false (!ev_is_active (w))) 4125 if (ecb_expect_false (!ev_is_active (w)))
3383 return; 4126 return;
3384 4127
3385 EV_FREQUENT_CHECK; 4128 EV_FREQUENT_CHECK;
3386 4129
3387 { 4130 {
… …
3389 4132
3390 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4133 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
3391 4134
3392 --timercnt; 4135 --timercnt;
3393 4136
3394 if (expect_true (active < timercnt + HEAP0)) 4137 if (ecb_expect_true (active < timercnt + HEAP0))
3395 { 4138 {
3396 timers [active] = timers [timercnt + HEAP0]; 4139 timers [active] = timers [timercnt + HEAP0];
3397 adjustheap (timers, timercnt, active); 4140 adjustheap (timers, timercnt, active);
3398 } 4141 }
3399 } 4142 }
… …
3403 ev_stop (EV_A_ (W)w); 4146 ev_stop (EV_A_ (W)w);
3404 4147
3405 EV_FREQUENT_CHECK; 4148 EV_FREQUENT_CHECK;
3406} 4149}
3407 4150
3408void noinline 4151ecb_noinline
4152void
3409ev_timer_again (EV_P_ ev_timer *w) EV_THROW 4153ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
3410{ 4154{
3411 EV_FREQUENT_CHECK; 4155 EV_FREQUENT_CHECK;
3412 4156
3413 clear_pending (EV_A_ (W)w); 4157 clear_pending (EV_A_ (W)w);
3414 4158
… …
3431 4175
3432 EV_FREQUENT_CHECK; 4176 EV_FREQUENT_CHECK;
3433} 4177}
3434 4178
3435ev_tstamp 4179ev_tstamp
3436ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW 4180ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
3437{ 4181{
3438 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4182 return ev_at (w) - (ev_is_active (w) ? mn_now : EV_TS_CONST (0.));
3439} 4183}
3440 4184
3441#if EV_PERIODIC_ENABLE 4185#if EV_PERIODIC_ENABLE
3442void noinline 4186ecb_noinline
4187void
3443ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW 4188ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
3444{ 4189{
3445 if (expect_false (ev_is_active (w))) 4190 if (ecb_expect_false (ev_is_active (w)))
3446 return; 4191 return;
3447 4192
3448 if (w->reschedule_cb) 4193 if (w->reschedule_cb)
3449 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4194 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
3450 else if (w->interval) 4195 else if (w->interval)
… …
3457 4202
3458 EV_FREQUENT_CHECK; 4203 EV_FREQUENT_CHECK;
3459 4204
3460 ++periodiccnt; 4205 ++periodiccnt;
3461 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4206 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
3462 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4207 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
3463 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4208 ANHE_w (periodics [ev_active (w)]) = (WT)w;
3464 ANHE_at_cache (periodics [ev_active (w)]); 4209 ANHE_at_cache (periodics [ev_active (w)]);
3465 upheap (periodics, ev_active (w)); 4210 upheap (periodics, ev_active (w));
3466 4211
3467 EV_FREQUENT_CHECK; 4212 EV_FREQUENT_CHECK;
3468 4213
3469 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4214 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
3470} 4215}
3471 4216
3472void noinline 4217ecb_noinline
4218void
3473ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW 4219ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
3474{ 4220{
3475 clear_pending (EV_A_ (W)w); 4221 clear_pending (EV_A_ (W)w);
3476 if (expect_false (!ev_is_active (w))) 4222 if (ecb_expect_false (!ev_is_active (w)))
3477 return; 4223 return;
3478 4224
3479 EV_FREQUENT_CHECK; 4225 EV_FREQUENT_CHECK;
3480 4226
3481 { 4227 {
… …
3483 4229
3484 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4230 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
3485 4231
3486 --periodiccnt; 4232 --periodiccnt;
3487 4233
3488 if (expect_true (active < periodiccnt + HEAP0)) 4234 if (ecb_expect_true (active < periodiccnt + HEAP0))
3489 { 4235 {
3490 periodics [active] = periodics [periodiccnt + HEAP0]; 4236 periodics [active] = periodics [periodiccnt + HEAP0];
3491 adjustheap (periodics, periodiccnt, active); 4237 adjustheap (periodics, periodiccnt, active);
3492 } 4238 }
3493 } 4239 }
… …
3495 ev_stop (EV_A_ (W)w); 4241 ev_stop (EV_A_ (W)w);
3496 4242
3497 EV_FREQUENT_CHECK; 4243 EV_FREQUENT_CHECK;
3498} 4244}
3499 4245
3500void noinline 4246ecb_noinline
4247void
3501ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW 4248ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
3502{ 4249{
3503 /* TODO: use adjustheap and recalculation */ 4250 /* TODO: use adjustheap and recalculation */
3504 ev_periodic_stop (EV_A_ w); 4251 ev_periodic_stop (EV_A_ w);
3505 ev_periodic_start (EV_A_ w); 4252 ev_periodic_start (EV_A_ w);
3506} 4253}
… …
3510# define SA_RESTART 0 4257# define SA_RESTART 0
3511#endif 4258#endif
3512 4259
3513#if EV_SIGNAL_ENABLE 4260#if EV_SIGNAL_ENABLE
3514 4261
3515void noinline 4262ecb_noinline
4263void
3516ev_signal_start (EV_P_ ev_signal *w) EV_THROW 4264ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
3517{ 4265{
3518 if (expect_false (ev_is_active (w))) 4266 if (ecb_expect_false (ev_is_active (w)))
3519 return; 4267 return;
3520 4268
3521 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4269 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
3522 4270
3523#if EV_MULTIPLICITY 4271#if EV_MULTIPLICITY
3524 assert (("libev: a signal must not be attached to two different loops", 4272 assert (("libev: a signal must not be attached to two different loops",
3525 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4273 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3526 4274
3527 signals [w->signum - 1].loop = EV_A; 4275 signals [w->signum - 1].loop = EV_A;
4276 ECB_MEMORY_FENCE_RELEASE;
3528#endif 4277#endif
3529 4278
3530 EV_FREQUENT_CHECK; 4279 EV_FREQUENT_CHECK;
3531 4280
3532#if EV_USE_SIGNALFD 4281#if EV_USE_SIGNALFD
… …
3591 } 4340 }
3592 4341
3593 EV_FREQUENT_CHECK; 4342 EV_FREQUENT_CHECK;
3594} 4343}
3595 4344
3596void noinline 4345ecb_noinline
4346void
3597ev_signal_stop (EV_P_ ev_signal *w) EV_THROW 4347ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
3598{ 4348{
3599 clear_pending (EV_A_ (W)w); 4349 clear_pending (EV_A_ (W)w);
3600 if (expect_false (!ev_is_active (w))) 4350 if (ecb_expect_false (!ev_is_active (w)))
3601 return; 4351 return;
3602 4352
3603 EV_FREQUENT_CHECK; 4353 EV_FREQUENT_CHECK;
3604 4354
3605 wlist_del (&signals [w->signum - 1].head, (WL)w); 4355 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
3633#endif 4383#endif
3634 4384
3635#if EV_CHILD_ENABLE 4385#if EV_CHILD_ENABLE
3636 4386
3637void 4387void
3638ev_child_start (EV_P_ ev_child *w) EV_THROW 4388ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
3639{ 4389{
3640#if EV_MULTIPLICITY 4390#if EV_MULTIPLICITY
3641 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4391 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3642#endif 4392#endif
3643 if (expect_false (ev_is_active (w))) 4393 if (ecb_expect_false (ev_is_active (w)))
3644 return; 4394 return;
3645 4395
3646 EV_FREQUENT_CHECK; 4396 EV_FREQUENT_CHECK;
3647 4397
3648 ev_start (EV_A_ (W)w, 1); 4398 ev_start (EV_A_ (W)w, 1);
… …
3650 4400
3651 EV_FREQUENT_CHECK; 4401 EV_FREQUENT_CHECK;
3652} 4402}
3653 4403
3654void 4404void
3655ev_child_stop (EV_P_ ev_child *w) EV_THROW 4405ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
3656{ 4406{
3657 clear_pending (EV_A_ (W)w); 4407 clear_pending (EV_A_ (W)w);
3658 if (expect_false (!ev_is_active (w))) 4408 if (ecb_expect_false (!ev_is_active (w)))
3659 return; 4409 return;
3660 4410
3661 EV_FREQUENT_CHECK; 4411 EV_FREQUENT_CHECK;
3662 4412
3663 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); 4413 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
… …
3677 4427
3678#define DEF_STAT_INTERVAL 5.0074891 4428#define DEF_STAT_INTERVAL 5.0074891
3679#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4429#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3680#define MIN_STAT_INTERVAL 0.1074891 4430#define MIN_STAT_INTERVAL 0.1074891
3681 4431
3682static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4432ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
3683 4433
3684#if EV_USE_INOTIFY 4434#if EV_USE_INOTIFY
3685 4435
3686/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4436/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3687# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4437# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3688 4438
3689static void noinline 4439ecb_noinline
4440static void
3690infy_add (EV_P_ ev_stat *w) 4441infy_add (EV_P_ ev_stat *w)
3691{ 4442{
3692 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 4443 w->wd = inotify_add_watch (fs_fd, w->path,
4444 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4445 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4446 | IN_DONT_FOLLOW | IN_MASK_ADD);
3693 4447
3694 if (w->wd >= 0) 4448 if (w->wd >= 0)
3695 { 4449 {
3696 struct statfs sfs; 4450 struct statfs sfs;
3697 4451
… …
3701 4455
3702 if (!fs_2625) 4456 if (!fs_2625)
3703 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4457 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3704 else if (!statfs (w->path, &sfs) 4458 else if (!statfs (w->path, &sfs)
3705 && (sfs.f_type == 0x1373 /* devfs */ 4459 && (sfs.f_type == 0x1373 /* devfs */
4460 || sfs.f_type == 0x4006 /* fat */
4461 || sfs.f_type == 0x4d44 /* msdos */
3706 || sfs.f_type == 0xEF53 /* ext2/3 */ 4462 || sfs.f_type == 0xEF53 /* ext2/3 */
4463 || sfs.f_type == 0x72b6 /* jffs2 */
4464 || sfs.f_type == 0x858458f6 /* ramfs */
4465 || sfs.f_type == 0x5346544e /* ntfs */
3707 || sfs.f_type == 0x3153464a /* jfs */ 4466 || sfs.f_type == 0x3153464a /* jfs */
4467 || sfs.f_type == 0x9123683e /* btrfs */
3708 || sfs.f_type == 0x52654973 /* reiser3 */ 4468 || sfs.f_type == 0x52654973 /* reiser3 */
3709 || sfs.f_type == 0x01021994 /* tempfs */ 4469 || sfs.f_type == 0x01021994 /* tmpfs */
3710 || sfs.f_type == 0x58465342 /* xfs */)) 4470 || sfs.f_type == 0x58465342 /* xfs */))
3711 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4471 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3712 else 4472 else
3713 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4473 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3714 } 4474 }
… …
3749 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4509 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3750 ev_timer_again (EV_A_ &w->timer); 4510 ev_timer_again (EV_A_ &w->timer);
3751 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4511 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3752} 4512}
3753 4513
3754static void noinline 4514ecb_noinline
4515static void
3755infy_del (EV_P_ ev_stat *w) 4516infy_del (EV_P_ ev_stat *w)
3756{ 4517{
3757 int slot; 4518 int slot;
3758 int wd = w->wd; 4519 int wd = w->wd;
3759 4520
… …
3766 4527
3767 /* remove this watcher, if others are watching it, they will rearm */ 4528 /* remove this watcher, if others are watching it, they will rearm */
3768 inotify_rm_watch (fs_fd, wd); 4529 inotify_rm_watch (fs_fd, wd);
3769} 4530}
3770 4531
3771static void noinline 4532ecb_noinline
4533static void
3772infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4534infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3773{ 4535{
3774 if (slot < 0) 4536 if (slot < 0)
3775 /* overflow, need to check for all hash slots */ 4537 /* overflow, need to check for all hash slots */
3776 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4538 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3812 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4574 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3813 ofs += sizeof (struct inotify_event) + ev->len; 4575 ofs += sizeof (struct inotify_event) + ev->len;
3814 } 4576 }
3815} 4577}
3816 4578
3817inline_size void ecb_cold 4579inline_size ecb_cold
4580void
3818ev_check_2625 (EV_P) 4581ev_check_2625 (EV_P)
3819{ 4582{
3820 /* kernels < 2.6.25 are borked 4583 /* kernels < 2.6.25 are borked
3821 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4584 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3822 */ 4585 */
… …
3912#else 4675#else
3913# define EV_LSTAT(p,b) lstat (p, b) 4676# define EV_LSTAT(p,b) lstat (p, b)
3914#endif 4677#endif
3915 4678
3916void 4679void
3917ev_stat_stat (EV_P_ ev_stat *w) EV_THROW 4680ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3918{ 4681{
3919 if (lstat (w->path, &w->attr) < 0) 4682 if (lstat (w->path, &w->attr) < 0)
3920 w->attr.st_nlink = 0; 4683 w->attr.st_nlink = 0;
3921 else if (!w->attr.st_nlink) 4684 else if (!w->attr.st_nlink)
3922 w->attr.st_nlink = 1; 4685 w->attr.st_nlink = 1;
3923} 4686}
3924 4687
3925static void noinline 4688ecb_noinline
4689static void
3926stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4690stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3927{ 4691{
3928 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4692 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3929 4693
3930 ev_statdata prev = w->attr; 4694 ev_statdata prev = w->attr;
… …
3961 ev_feed_event (EV_A_ w, EV_STAT); 4725 ev_feed_event (EV_A_ w, EV_STAT);
3962 } 4726 }
3963} 4727}
3964 4728
3965void 4729void
3966ev_stat_start (EV_P_ ev_stat *w) EV_THROW 4730ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3967{ 4731{
3968 if (expect_false (ev_is_active (w))) 4732 if (ecb_expect_false (ev_is_active (w)))
3969 return; 4733 return;
3970 4734
3971 ev_stat_stat (EV_A_ w); 4735 ev_stat_stat (EV_A_ w);
3972 4736
3973 if (w->interval < MIN_STAT_INTERVAL && w->interval) 4737 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
3992 4756
3993 EV_FREQUENT_CHECK; 4757 EV_FREQUENT_CHECK;
3994} 4758}
3995 4759
3996void 4760void
3997ev_stat_stop (EV_P_ ev_stat *w) EV_THROW 4761ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3998{ 4762{
3999 clear_pending (EV_A_ (W)w); 4763 clear_pending (EV_A_ (W)w);
4000 if (expect_false (!ev_is_active (w))) 4764 if (ecb_expect_false (!ev_is_active (w)))
4001 return; 4765 return;
4002 4766
4003 EV_FREQUENT_CHECK; 4767 EV_FREQUENT_CHECK;
4004 4768
4005#if EV_USE_INOTIFY 4769#if EV_USE_INOTIFY
… …
4018} 4782}
4019#endif 4783#endif
4020 4784
4021#if EV_IDLE_ENABLE 4785#if EV_IDLE_ENABLE
4022void 4786void
4023ev_idle_start (EV_P_ ev_idle *w) EV_THROW 4787ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
4024{ 4788{
4025 if (expect_false (ev_is_active (w))) 4789 if (ecb_expect_false (ev_is_active (w)))
4026 return; 4790 return;
4027 4791
4028 pri_adjust (EV_A_ (W)w); 4792 pri_adjust (EV_A_ (W)w);
4029 4793
4030 EV_FREQUENT_CHECK; 4794 EV_FREQUENT_CHECK;
… …
4033 int active = ++idlecnt [ABSPRI (w)]; 4797 int active = ++idlecnt [ABSPRI (w)];
4034 4798
4035 ++idleall; 4799 ++idleall;
4036 ev_start (EV_A_ (W)w, active); 4800 ev_start (EV_A_ (W)w, active);
4037 4801
4038 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4802 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
4039 idles [ABSPRI (w)][active - 1] = w; 4803 idles [ABSPRI (w)][active - 1] = w;
4040 } 4804 }
4041 4805
4042 EV_FREQUENT_CHECK; 4806 EV_FREQUENT_CHECK;
4043} 4807}
4044 4808
4045void 4809void
4046ev_idle_stop (EV_P_ ev_idle *w) EV_THROW 4810ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
4047{ 4811{
4048 clear_pending (EV_A_ (W)w); 4812 clear_pending (EV_A_ (W)w);
4049 if (expect_false (!ev_is_active (w))) 4813 if (ecb_expect_false (!ev_is_active (w)))
4050 return; 4814 return;
4051 4815
4052 EV_FREQUENT_CHECK; 4816 EV_FREQUENT_CHECK;
4053 4817
4054 { 4818 {
… …
4065} 4829}
4066#endif 4830#endif
4067 4831
4068#if EV_PREPARE_ENABLE 4832#if EV_PREPARE_ENABLE
4069void 4833void
4070ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW 4834ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
4071{ 4835{
4072 if (expect_false (ev_is_active (w))) 4836 if (ecb_expect_false (ev_is_active (w)))
4073 return; 4837 return;
4074 4838
4075 EV_FREQUENT_CHECK; 4839 EV_FREQUENT_CHECK;
4076 4840
4077 ev_start (EV_A_ (W)w, ++preparecnt); 4841 ev_start (EV_A_ (W)w, ++preparecnt);
4078 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4842 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
4079 prepares [preparecnt - 1] = w; 4843 prepares [preparecnt - 1] = w;
4080 4844
4081 EV_FREQUENT_CHECK; 4845 EV_FREQUENT_CHECK;
4082} 4846}
4083 4847
4084void 4848void
4085ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW 4849ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
4086{ 4850{
4087 clear_pending (EV_A_ (W)w); 4851 clear_pending (EV_A_ (W)w);
4088 if (expect_false (!ev_is_active (w))) 4852 if (ecb_expect_false (!ev_is_active (w)))
4089 return; 4853 return;
4090 4854
4091 EV_FREQUENT_CHECK; 4855 EV_FREQUENT_CHECK;
4092 4856
4093 { 4857 {
… …
4103} 4867}
4104#endif 4868#endif
4105 4869
4106#if EV_CHECK_ENABLE 4870#if EV_CHECK_ENABLE
4107void 4871void
4108ev_check_start (EV_P_ ev_check *w) EV_THROW 4872ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
4109{ 4873{
4110 if (expect_false (ev_is_active (w))) 4874 if (ecb_expect_false (ev_is_active (w)))
4111 return; 4875 return;
4112 4876
4113 EV_FREQUENT_CHECK; 4877 EV_FREQUENT_CHECK;
4114 4878
4115 ev_start (EV_A_ (W)w, ++checkcnt); 4879 ev_start (EV_A_ (W)w, ++checkcnt);
4116 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4880 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
4117 checks [checkcnt - 1] = w; 4881 checks [checkcnt - 1] = w;
4118 4882
4119 EV_FREQUENT_CHECK; 4883 EV_FREQUENT_CHECK;
4120} 4884}
4121 4885
4122void 4886void
4123ev_check_stop (EV_P_ ev_check *w) EV_THROW 4887ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
4124{ 4888{
4125 clear_pending (EV_A_ (W)w); 4889 clear_pending (EV_A_ (W)w);
4126 if (expect_false (!ev_is_active (w))) 4890 if (ecb_expect_false (!ev_is_active (w)))
4127 return; 4891 return;
4128 4892
4129 EV_FREQUENT_CHECK; 4893 EV_FREQUENT_CHECK;
4130 4894
4131 { 4895 {
… …
4140 EV_FREQUENT_CHECK; 4904 EV_FREQUENT_CHECK;
4141} 4905}
4142#endif 4906#endif
4143 4907
4144#if EV_EMBED_ENABLE 4908#if EV_EMBED_ENABLE
4145void noinline 4909ecb_noinline
4910void
4146ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW 4911ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
4147{ 4912{
4148 ev_run (w->other, EVRUN_NOWAIT); 4913 ev_run (w->other, EVRUN_NOWAIT);
4149} 4914}
4150 4915
4151static void 4916static void
… …
4199 ev_idle_stop (EV_A_ idle); 4964 ev_idle_stop (EV_A_ idle);
4200} 4965}
4201#endif 4966#endif
4202 4967
4203void 4968void
4204ev_embed_start (EV_P_ ev_embed *w) EV_THROW 4969ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
4205{ 4970{
4206 if (expect_false (ev_is_active (w))) 4971 if (ecb_expect_false (ev_is_active (w)))
4207 return; 4972 return;
4208 4973
4209 { 4974 {
4210 EV_P = w->other; 4975 EV_P = w->other;
4211 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4976 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
… …
4230 4995
4231 EV_FREQUENT_CHECK; 4996 EV_FREQUENT_CHECK;
4232} 4997}
4233 4998
4234void 4999void
4235ev_embed_stop (EV_P_ ev_embed *w) EV_THROW 5000ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
4236{ 5001{
4237 clear_pending (EV_A_ (W)w); 5002 clear_pending (EV_A_ (W)w);
4238 if (expect_false (!ev_is_active (w))) 5003 if (ecb_expect_false (!ev_is_active (w)))
4239 return; 5004 return;
4240 5005
4241 EV_FREQUENT_CHECK; 5006 EV_FREQUENT_CHECK;
4242 5007
4243 ev_io_stop (EV_A_ &w->io); 5008 ev_io_stop (EV_A_ &w->io);
… …
4250} 5015}
4251#endif 5016#endif
4252 5017
4253#if EV_FORK_ENABLE 5018#if EV_FORK_ENABLE
4254void 5019void
4255ev_fork_start (EV_P_ ev_fork *w) EV_THROW 5020ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
4256{ 5021{
4257 if (expect_false (ev_is_active (w))) 5022 if (ecb_expect_false (ev_is_active (w)))
4258 return; 5023 return;
4259 5024
4260 EV_FREQUENT_CHECK; 5025 EV_FREQUENT_CHECK;
4261 5026
4262 ev_start (EV_A_ (W)w, ++forkcnt); 5027 ev_start (EV_A_ (W)w, ++forkcnt);
4263 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5028 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
4264 forks [forkcnt - 1] = w; 5029 forks [forkcnt - 1] = w;
4265 5030
4266 EV_FREQUENT_CHECK; 5031 EV_FREQUENT_CHECK;
4267} 5032}
4268 5033
4269void 5034void
4270ev_fork_stop (EV_P_ ev_fork *w) EV_THROW 5035ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
4271{ 5036{
4272 clear_pending (EV_A_ (W)w); 5037 clear_pending (EV_A_ (W)w);
4273 if (expect_false (!ev_is_active (w))) 5038 if (ecb_expect_false (!ev_is_active (w)))
4274 return; 5039 return;
4275 5040
4276 EV_FREQUENT_CHECK; 5041 EV_FREQUENT_CHECK;
4277 5042
4278 { 5043 {
… …
4288} 5053}
4289#endif 5054#endif
4290 5055
4291#if EV_CLEANUP_ENABLE 5056#if EV_CLEANUP_ENABLE
4292void 5057void
4293ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW 5058ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4294{ 5059{
4295 if (expect_false (ev_is_active (w))) 5060 if (ecb_expect_false (ev_is_active (w)))
4296 return; 5061 return;
4297 5062
4298 EV_FREQUENT_CHECK; 5063 EV_FREQUENT_CHECK;
4299 5064
4300 ev_start (EV_A_ (W)w, ++cleanupcnt); 5065 ev_start (EV_A_ (W)w, ++cleanupcnt);
4301 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 5066 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
4302 cleanups [cleanupcnt - 1] = w; 5067 cleanups [cleanupcnt - 1] = w;
4303 5068
4304 /* cleanup watchers should never keep a refcount on the loop */ 5069 /* cleanup watchers should never keep a refcount on the loop */
4305 ev_unref (EV_A); 5070 ev_unref (EV_A);
4306 EV_FREQUENT_CHECK; 5071 EV_FREQUENT_CHECK;
4307} 5072}
4308 5073
4309void 5074void
4310ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW 5075ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4311{ 5076{
4312 clear_pending (EV_A_ (W)w); 5077 clear_pending (EV_A_ (W)w);
4313 if (expect_false (!ev_is_active (w))) 5078 if (ecb_expect_false (!ev_is_active (w)))
4314 return; 5079 return;
4315 5080
4316 EV_FREQUENT_CHECK; 5081 EV_FREQUENT_CHECK;
4317 ev_ref (EV_A); 5082 ev_ref (EV_A);
4318 5083
… …
4329} 5094}
4330#endif 5095#endif
4331 5096
4332#if EV_ASYNC_ENABLE 5097#if EV_ASYNC_ENABLE
4333void 5098void
4334ev_async_start (EV_P_ ev_async *w) EV_THROW 5099ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4335{ 5100{
4336 if (expect_false (ev_is_active (w))) 5101 if (ecb_expect_false (ev_is_active (w)))
4337 return; 5102 return;
4338 5103
4339 w->sent = 0; 5104 w->sent = 0;
4340 5105
4341 evpipe_init (EV_A); 5106 evpipe_init (EV_A);
4342 5107
4343 EV_FREQUENT_CHECK; 5108 EV_FREQUENT_CHECK;
4344 5109
4345 ev_start (EV_A_ (W)w, ++asynccnt); 5110 ev_start (EV_A_ (W)w, ++asynccnt);
4346 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5111 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
4347 asyncs [asynccnt - 1] = w; 5112 asyncs [asynccnt - 1] = w;
4348 5113
4349 EV_FREQUENT_CHECK; 5114 EV_FREQUENT_CHECK;
4350} 5115}
4351 5116
4352void 5117void
4353ev_async_stop (EV_P_ ev_async *w) EV_THROW 5118ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4354{ 5119{
4355 clear_pending (EV_A_ (W)w); 5120 clear_pending (EV_A_ (W)w);
4356 if (expect_false (!ev_is_active (w))) 5121 if (ecb_expect_false (!ev_is_active (w)))
4357 return; 5122 return;
4358 5123
4359 EV_FREQUENT_CHECK; 5124 EV_FREQUENT_CHECK;
4360 5125
4361 { 5126 {
… …
4369 5134
4370 EV_FREQUENT_CHECK; 5135 EV_FREQUENT_CHECK;
4371} 5136}
4372 5137
4373void 5138void
4374ev_async_send (EV_P_ ev_async *w) EV_THROW 5139ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
4375{ 5140{
4376 w->sent = 1; 5141 w->sent = 1;
4377 evpipe_write (EV_A_ &async_pending); 5142 evpipe_write (EV_A_ &async_pending);
4378} 5143}
4379#endif 5144#endif
… …
4416 5181
4417 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5182 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
4418} 5183}
4419 5184
4420void 5185void
4421ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW 5186ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
4422{ 5187{
4423 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5188 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
4424
4425 if (expect_false (!once))
4426 {
4427 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
4428 return;
4429 }
4430 5189
4431 once->cb = cb; 5190 once->cb = cb;
4432 once->arg = arg; 5191 once->arg = arg;
4433 5192
4434 ev_init (&once->io, once_cb_io); 5193 ev_init (&once->io, once_cb_io);
… …
4447} 5206}
4448 5207
4449/*****************************************************************************/ 5208/*****************************************************************************/
4450 5209
4451#if EV_WALK_ENABLE 5210#if EV_WALK_ENABLE
4452void ecb_cold 5211ecb_cold
5212void
4453ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW 5213ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
4454{ 5214{
4455 int i, j; 5215 int i, j;
4456 ev_watcher_list *wl, *wn; 5216 ev_watcher_list *wl, *wn;
4457 5217
4458 if (types & (EV_IO | EV_EMBED)) 5218 if (types & (EV_IO | EV_EMBED))

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines