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Comparing libev/ev.c (file contents):
Revision 1.441 by root, Wed May 30 15:45:40 2012 UTC vs.
Revision 1.510 by root, Wed Aug 28 09:45:49 2019 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010,2011,2012 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
2009 {
1350 struct timeval tv; 2010 struct timeval tv;
1351 gettimeofday (&tv, 0); 2011 gettimeofday (&tv, 0);
1352 return tv.tv_sec + tv.tv_usec * 1e-6; 2012 return EV_TV_GET (tv);
2013 }
1353} 2014}
1354#endif 2015#endif
1355 2016
1356inline_size ev_tstamp 2017inline_size ev_tstamp
1357get_clock (void) 2018get_clock (void)
1358{ 2019{
1359#if EV_USE_MONOTONIC 2020#if EV_USE_MONOTONIC
1360 if (expect_true (have_monotonic)) 2021 if (ecb_expect_true (have_monotonic))
1361 { 2022 {
1362 struct timespec ts; 2023 struct timespec ts;
1363 clock_gettime (CLOCK_MONOTONIC, &ts); 2024 clock_gettime (CLOCK_MONOTONIC, &ts);
1364 return ts.tv_sec + ts.tv_nsec * 1e-9; 2025 return EV_TS_GET (ts);
1365 } 2026 }
1366#endif 2027#endif
1367 2028
1368 return ev_time (); 2029 return ev_time ();
1369} 2030}
1370 2031
1371#if EV_MULTIPLICITY 2032#if EV_MULTIPLICITY
1372ev_tstamp 2033ev_tstamp
1373ev_now (EV_P) EV_THROW 2034ev_now (EV_P) EV_NOEXCEPT
1374{ 2035{
1375 return ev_rt_now; 2036 return ev_rt_now;
1376} 2037}
1377#endif 2038#endif
1378 2039
1379void 2040void
1380ev_sleep (ev_tstamp delay) EV_THROW 2041ev_sleep (ev_tstamp delay) EV_NOEXCEPT
1381{ 2042{
1382 if (delay > 0.) 2043 if (delay > EV_TS_CONST (0.))
1383 { 2044 {
1384#if EV_USE_NANOSLEEP 2045#if EV_USE_NANOSLEEP
1385 struct timespec ts; 2046 struct timespec ts;
1386 2047
1387 EV_TS_SET (ts, delay); 2048 EV_TS_SET (ts, delay);
1388 nanosleep (&ts, 0); 2049 nanosleep (&ts, 0);
1389#elif defined _WIN32 2050#elif defined _WIN32
2051 /* maybe this should round up, as ms is very low resolution */
2052 /* compared to select (µs) or nanosleep (ns) */
1390 Sleep ((unsigned long)(delay * 1e3)); 2053 Sleep ((unsigned long)(EV_TS_TO_MSEC (delay)));
1391#else 2054#else
1392 struct timeval tv; 2055 struct timeval tv;
1393 2056
1394 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 2057 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
1395 /* something not guaranteed by newer posix versions, but guaranteed */ 2058 /* something not guaranteed by newer posix versions, but guaranteed */
… …
1425 } 2088 }
1426 2089
1427 return ncur; 2090 return ncur;
1428} 2091}
1429 2092
1430static void * noinline ecb_cold 2093ecb_noinline ecb_cold
2094static void *
1431array_realloc (int elem, void *base, int *cur, int cnt) 2095array_realloc (int elem, void *base, int *cur, int cnt)
1432{ 2096{
1433 *cur = array_nextsize (elem, *cur, cnt); 2097 *cur = array_nextsize (elem, *cur, cnt);
1434 return ev_realloc (base, elem * *cur); 2098 return ev_realloc (base, elem * *cur);
1435} 2099}
1436 2100
2101#define array_needsize_noinit(base,offset,count)
2102
1437#define array_init_zero(base,count) \ 2103#define array_needsize_zerofill(base,offset,count) \
1438 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2104 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
1439 2105
1440#define array_needsize(type,base,cur,cnt,init) \ 2106#define array_needsize(type,base,cur,cnt,init) \
1441 if (expect_false ((cnt) > (cur))) \ 2107 if (ecb_expect_false ((cnt) > (cur))) \
1442 { \ 2108 { \
1443 int ecb_unused ocur_ = (cur); \ 2109 ecb_unused int ocur_ = (cur); \
1444 (base) = (type *)array_realloc \ 2110 (base) = (type *)array_realloc \
1445 (sizeof (type), (base), &(cur), (cnt)); \ 2111 (sizeof (type), (base), &(cur), (cnt)); \
1446 init ((base) + (ocur_), (cur) - ocur_); \ 2112 init ((base), ocur_, ((cur) - ocur_)); \
1447 } 2113 }
1448 2114
1449#if 0 2115#if 0
1450#define array_slim(type,stem) \ 2116#define array_slim(type,stem) \
1451 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2117 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 2126 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
1461 2127
1462/*****************************************************************************/ 2128/*****************************************************************************/
1463 2129
1464/* dummy callback for pending events */ 2130/* dummy callback for pending events */
1465static void noinline 2131ecb_noinline
2132static void
1466pendingcb (EV_P_ ev_prepare *w, int revents) 2133pendingcb (EV_P_ ev_prepare *w, int revents)
1467{ 2134{
1468} 2135}
1469 2136
1470void noinline 2137ecb_noinline
2138void
1471ev_feed_event (EV_P_ void *w, int revents) EV_THROW 2139ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
1472{ 2140{
1473 W w_ = (W)w; 2141 W w_ = (W)w;
1474 int pri = ABSPRI (w_); 2142 int pri = ABSPRI (w_);
1475 2143
1476 if (expect_false (w_->pending)) 2144 if (ecb_expect_false (w_->pending))
1477 pendings [pri][w_->pending - 1].events |= revents; 2145 pendings [pri][w_->pending - 1].events |= revents;
1478 else 2146 else
1479 { 2147 {
1480 w_->pending = ++pendingcnt [pri]; 2148 w_->pending = ++pendingcnt [pri];
1481 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2149 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
1482 pendings [pri][w_->pending - 1].w = w_; 2150 pendings [pri][w_->pending - 1].w = w_;
1483 pendings [pri][w_->pending - 1].events = revents; 2151 pendings [pri][w_->pending - 1].events = revents;
1484 } 2152 }
1485 2153
1486 pendingpri = NUMPRI - 1; 2154 pendingpri = NUMPRI - 1;
1487} 2155}
1488 2156
1489inline_speed void 2157inline_speed void
1490feed_reverse (EV_P_ W w) 2158feed_reverse (EV_P_ W w)
1491{ 2159{
1492 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2160 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
1493 rfeeds [rfeedcnt++] = w; 2161 rfeeds [rfeedcnt++] = w;
1494} 2162}
1495 2163
1496inline_size void 2164inline_size void
1497feed_reverse_done (EV_P_ int revents) 2165feed_reverse_done (EV_P_ int revents)
… …
1532inline_speed void 2200inline_speed void
1533fd_event (EV_P_ int fd, int revents) 2201fd_event (EV_P_ int fd, int revents)
1534{ 2202{
1535 ANFD *anfd = anfds + fd; 2203 ANFD *anfd = anfds + fd;
1536 2204
1537 if (expect_true (!anfd->reify)) 2205 if (ecb_expect_true (!anfd->reify))
1538 fd_event_nocheck (EV_A_ fd, revents); 2206 fd_event_nocheck (EV_A_ fd, revents);
1539} 2207}
1540 2208
1541void 2209void
1542ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW 2210ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
1543{ 2211{
1544 if (fd >= 0 && fd < anfdmax) 2212 if (fd >= 0 && fd < anfdmax)
1545 fd_event_nocheck (EV_A_ fd, revents); 2213 fd_event_nocheck (EV_A_ fd, revents);
1546} 2214}
1547 2215
… …
1584 ev_io *w; 2252 ev_io *w;
1585 2253
1586 unsigned char o_events = anfd->events; 2254 unsigned char o_events = anfd->events;
1587 unsigned char o_reify = anfd->reify; 2255 unsigned char o_reify = anfd->reify;
1588 2256
1589 anfd->reify = 0; 2257 anfd->reify = 0;
1590 2258
1591 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 2259 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
1592 { 2260 {
1593 anfd->events = 0; 2261 anfd->events = 0;
1594 2262
1595 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2263 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1596 anfd->events |= (unsigned char)w->events; 2264 anfd->events |= (unsigned char)w->events;
… …
1605 2273
1606 fdchangecnt = 0; 2274 fdchangecnt = 0;
1607} 2275}
1608 2276
1609/* something about the given fd changed */ 2277/* something about the given fd changed */
1610inline_size void 2278inline_size
2279void
1611fd_change (EV_P_ int fd, int flags) 2280fd_change (EV_P_ int fd, int flags)
1612{ 2281{
1613 unsigned char reify = anfds [fd].reify; 2282 unsigned char reify = anfds [fd].reify;
1614 anfds [fd].reify |= flags; 2283 anfds [fd].reify |= flags;
1615 2284
1616 if (expect_true (!reify)) 2285 if (ecb_expect_true (!reify))
1617 { 2286 {
1618 ++fdchangecnt; 2287 ++fdchangecnt;
1619 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2288 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
1620 fdchanges [fdchangecnt - 1] = fd; 2289 fdchanges [fdchangecnt - 1] = fd;
1621 } 2290 }
1622} 2291}
1623 2292
1624/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2293/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1625inline_speed void ecb_cold 2294inline_speed ecb_cold void
1626fd_kill (EV_P_ int fd) 2295fd_kill (EV_P_ int fd)
1627{ 2296{
1628 ev_io *w; 2297 ev_io *w;
1629 2298
1630 while ((w = (ev_io *)anfds [fd].head)) 2299 while ((w = (ev_io *)anfds [fd].head))
… …
1633 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2302 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1634 } 2303 }
1635} 2304}
1636 2305
1637/* check whether the given fd is actually valid, for error recovery */ 2306/* check whether the given fd is actually valid, for error recovery */
1638inline_size int ecb_cold 2307inline_size ecb_cold int
1639fd_valid (int fd) 2308fd_valid (int fd)
1640{ 2309{
1641#ifdef _WIN32 2310#ifdef _WIN32
1642 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2311 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1643#else 2312#else
1644 return fcntl (fd, F_GETFD) != -1; 2313 return fcntl (fd, F_GETFD) != -1;
1645#endif 2314#endif
1646} 2315}
1647 2316
1648/* called on EBADF to verify fds */ 2317/* called on EBADF to verify fds */
1649static void noinline ecb_cold 2318ecb_noinline ecb_cold
2319static void
1650fd_ebadf (EV_P) 2320fd_ebadf (EV_P)
1651{ 2321{
1652 int fd; 2322 int fd;
1653 2323
1654 for (fd = 0; fd < anfdmax; ++fd) 2324 for (fd = 0; fd < anfdmax; ++fd)
… …
1656 if (!fd_valid (fd) && errno == EBADF) 2326 if (!fd_valid (fd) && errno == EBADF)
1657 fd_kill (EV_A_ fd); 2327 fd_kill (EV_A_ fd);
1658} 2328}
1659 2329
1660/* called on ENOMEM in select/poll to kill some fds and retry */ 2330/* called on ENOMEM in select/poll to kill some fds and retry */
1661static void noinline ecb_cold 2331ecb_noinline ecb_cold
2332static void
1662fd_enomem (EV_P) 2333fd_enomem (EV_P)
1663{ 2334{
1664 int fd; 2335 int fd;
1665 2336
1666 for (fd = anfdmax; fd--; ) 2337 for (fd = anfdmax; fd--; )
… …
1670 break; 2341 break;
1671 } 2342 }
1672} 2343}
1673 2344
1674/* usually called after fork if backend needs to re-arm all fds from scratch */ 2345/* usually called after fork if backend needs to re-arm all fds from scratch */
1675static void noinline 2346ecb_noinline
2347static void
1676fd_rearm_all (EV_P) 2348fd_rearm_all (EV_P)
1677{ 2349{
1678 int fd; 2350 int fd;
1679 2351
1680 for (fd = 0; fd < anfdmax; ++fd) 2352 for (fd = 0; fd < anfdmax; ++fd)
… …
1733 ev_tstamp minat; 2405 ev_tstamp minat;
1734 ANHE *minpos; 2406 ANHE *minpos;
1735 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2407 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1736 2408
1737 /* find minimum child */ 2409 /* find minimum child */
1738 if (expect_true (pos + DHEAP - 1 < E)) 2410 if (ecb_expect_true (pos + DHEAP - 1 < E))
1739 { 2411 {
1740 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2412 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1741 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2413 if ( minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1742 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2414 if ( minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1743 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2415 if ( minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1744 } 2416 }
1745 else if (pos < E) 2417 else if (pos < E)
1746 { 2418 {
1747 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2419 /* 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)); 2420 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)); 2421 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)); 2422 if (pos + 3 < E && minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1751 } 2423 }
1752 else 2424 else
1753 break; 2425 break;
1754 2426
1755 if (ANHE_at (he) <= minat) 2427 if (ANHE_at (he) <= minat)
… …
1763 2435
1764 heap [k] = he; 2436 heap [k] = he;
1765 ev_active (ANHE_w (he)) = k; 2437 ev_active (ANHE_w (he)) = k;
1766} 2438}
1767 2439
1768#else /* 4HEAP */ 2440#else /* not 4HEAP */
1769 2441
1770#define HEAP0 1 2442#define HEAP0 1
1771#define HPARENT(k) ((k) >> 1) 2443#define HPARENT(k) ((k) >> 1)
1772#define UPHEAP_DONE(p,k) (!(p)) 2444#define UPHEAP_DONE(p,k) (!(p))
1773 2445
… …
1861 2533
1862/*****************************************************************************/ 2534/*****************************************************************************/
1863 2535
1864#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2536#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1865 2537
1866static void noinline ecb_cold 2538ecb_noinline ecb_cold
2539static void
1867evpipe_init (EV_P) 2540evpipe_init (EV_P)
1868{ 2541{
1869 if (!ev_is_active (&pipe_w)) 2542 if (!ev_is_active (&pipe_w))
1870 { 2543 {
2544 int fds [2];
2545
1871# if EV_USE_EVENTFD 2546# if EV_USE_EVENTFD
2547 fds [0] = -1;
1872 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2548 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1873 if (evfd < 0 && errno == EINVAL) 2549 if (fds [1] < 0 && errno == EINVAL)
1874 evfd = eventfd (0, 0); 2550 fds [1] = eventfd (0, 0);
1875 2551
1876 if (evfd >= 0) 2552 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 2553# endif
1884 { 2554 {
1885 while (pipe (evpipe)) 2555 while (pipe (fds))
1886 ev_syserr ("(libev) error creating signal/async pipe"); 2556 ev_syserr ("(libev) error creating signal/async pipe");
1887 2557
1888 fd_intern (evpipe [0]); 2558 fd_intern (fds [0]);
1889 fd_intern (evpipe [1]);
1890 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1891 } 2559 }
1892 2560
2561 evpipe [0] = fds [0];
2562
2563 if (evpipe [1] < 0)
2564 evpipe [1] = fds [1]; /* first call, set write fd */
2565 else
2566 {
2567 /* on subsequent calls, do not change evpipe [1] */
2568 /* so that evpipe_write can always rely on its value. */
2569 /* this branch does not do anything sensible on windows, */
2570 /* so must not be executed on windows */
2571
2572 dup2 (fds [1], evpipe [1]);
2573 close (fds [1]);
2574 }
2575
2576 fd_intern (evpipe [1]);
2577
2578 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
1893 ev_io_start (EV_A_ &pipe_w); 2579 ev_io_start (EV_A_ &pipe_w);
1894 ev_unref (EV_A); /* watcher should not keep loop alive */ 2580 ev_unref (EV_A); /* watcher should not keep loop alive */
1895 } 2581 }
1896} 2582}
1897 2583
1898inline_speed void 2584inline_speed void
1899evpipe_write (EV_P_ EV_ATOMIC_T *flag) 2585evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1900{ 2586{
1901 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */ 2587 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1902 2588
1903 if (expect_true (*flag)) 2589 if (ecb_expect_true (*flag))
1904 return; 2590 return;
1905 2591
1906 *flag = 1; 2592 *flag = 1;
1907 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */ 2593 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1908 2594
… …
1918 ECB_MEMORY_FENCE_RELEASE; 2604 ECB_MEMORY_FENCE_RELEASE;
1919 2605
1920 old_errno = errno; /* save errno because write will clobber it */ 2606 old_errno = errno; /* save errno because write will clobber it */
1921 2607
1922#if EV_USE_EVENTFD 2608#if EV_USE_EVENTFD
1923 if (evfd >= 0) 2609 if (evpipe [0] < 0)
1924 { 2610 {
1925 uint64_t counter = 1; 2611 uint64_t counter = 1;
1926 write (evfd, &counter, sizeof (uint64_t)); 2612 write (evpipe [1], &counter, sizeof (uint64_t));
1927 } 2613 }
1928 else 2614 else
1929#endif 2615#endif
1930 { 2616 {
1931#ifdef _WIN32 2617#ifdef _WIN32
1932 WSABUF buf; 2618 WSABUF buf;
1933 DWORD sent; 2619 DWORD sent;
1934 buf.buf = &buf; 2620 buf.buf = (char *)&buf;
1935 buf.len = 1; 2621 buf.len = 1;
1936 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0); 2622 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1937#else 2623#else
1938 write (evpipe [1], &(evpipe [1]), 1); 2624 write (evpipe [1], &(evpipe [1]), 1);
1939#endif 2625#endif
… …
1951 int i; 2637 int i;
1952 2638
1953 if (revents & EV_READ) 2639 if (revents & EV_READ)
1954 { 2640 {
1955#if EV_USE_EVENTFD 2641#if EV_USE_EVENTFD
1956 if (evfd >= 0) 2642 if (evpipe [0] < 0)
1957 { 2643 {
1958 uint64_t counter; 2644 uint64_t counter;
1959 read (evfd, &counter, sizeof (uint64_t)); 2645 read (evpipe [1], &counter, sizeof (uint64_t));
1960 } 2646 }
1961 else 2647 else
1962#endif 2648#endif
1963 { 2649 {
1964 char dummy[4]; 2650 char dummy[4];
… …
1985 sig_pending = 0; 2671 sig_pending = 0;
1986 2672
1987 ECB_MEMORY_FENCE; 2673 ECB_MEMORY_FENCE;
1988 2674
1989 for (i = EV_NSIG - 1; i--; ) 2675 for (i = EV_NSIG - 1; i--; )
1990 if (expect_false (signals [i].pending)) 2676 if (ecb_expect_false (signals [i].pending))
1991 ev_feed_signal_event (EV_A_ i + 1); 2677 ev_feed_signal_event (EV_A_ i + 1);
1992 } 2678 }
1993#endif 2679#endif
1994 2680
1995#if EV_ASYNC_ENABLE 2681#if EV_ASYNC_ENABLE
… …
2011} 2697}
2012 2698
2013/*****************************************************************************/ 2699/*****************************************************************************/
2014 2700
2015void 2701void
2016ev_feed_signal (int signum) EV_THROW 2702ev_feed_signal (int signum) EV_NOEXCEPT
2017{ 2703{
2018#if EV_MULTIPLICITY 2704#if EV_MULTIPLICITY
2705 EV_P;
2706 ECB_MEMORY_FENCE_ACQUIRE;
2019 EV_P = signals [signum - 1].loop; 2707 EV_A = signals [signum - 1].loop;
2020 2708
2021 if (!EV_A) 2709 if (!EV_A)
2022 return; 2710 return;
2023#endif 2711#endif
2024 2712
2025 if (!ev_active (&pipe_w))
2026 return;
2027
2028 signals [signum - 1].pending = 1; 2713 signals [signum - 1].pending = 1;
2029 evpipe_write (EV_A_ &sig_pending); 2714 evpipe_write (EV_A_ &sig_pending);
2030} 2715}
2031 2716
2032static void 2717static void
… …
2037#endif 2722#endif
2038 2723
2039 ev_feed_signal (signum); 2724 ev_feed_signal (signum);
2040} 2725}
2041 2726
2042void noinline 2727ecb_noinline
2728void
2043ev_feed_signal_event (EV_P_ int signum) EV_THROW 2729ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
2044{ 2730{
2045 WL w; 2731 WL w;
2046 2732
2047 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2733 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
2048 return; 2734 return;
2049 2735
2050 --signum; 2736 --signum;
2051 2737
2052#if EV_MULTIPLICITY 2738#if EV_MULTIPLICITY
2053 /* it is permissible to try to feed a signal to the wrong loop */ 2739 /* it is permissible to try to feed a signal to the wrong loop */
2054 /* or, likely more useful, feeding a signal nobody is waiting for */ 2740 /* or, likely more useful, feeding a signal nobody is waiting for */
2055 2741
2056 if (expect_false (signals [signum].loop != EV_A)) 2742 if (ecb_expect_false (signals [signum].loop != EV_A))
2057 return; 2743 return;
2058#endif 2744#endif
2059 2745
2060 signals [signum].pending = 0; 2746 signals [signum].pending = 0;
2061 ECB_MEMORY_FENCE_RELEASE; 2747 ECB_MEMORY_FENCE_RELEASE;
… …
2157# include "ev_kqueue.c" 2843# include "ev_kqueue.c"
2158#endif 2844#endif
2159#if EV_USE_EPOLL 2845#if EV_USE_EPOLL
2160# include "ev_epoll.c" 2846# include "ev_epoll.c"
2161#endif 2847#endif
2848#if EV_USE_LINUXAIO
2849# include "ev_linuxaio.c"
2850#endif
2851#if EV_USE_IOURING
2852# include "ev_iouring.c"
2853#endif
2162#if EV_USE_POLL 2854#if EV_USE_POLL
2163# include "ev_poll.c" 2855# include "ev_poll.c"
2164#endif 2856#endif
2165#if EV_USE_SELECT 2857#if EV_USE_SELECT
2166# include "ev_select.c" 2858# include "ev_select.c"
2167#endif 2859#endif
2168 2860
2169int ecb_cold 2861ecb_cold int
2170ev_version_major (void) EV_THROW 2862ev_version_major (void) EV_NOEXCEPT
2171{ 2863{
2172 return EV_VERSION_MAJOR; 2864 return EV_VERSION_MAJOR;
2173} 2865}
2174 2866
2175int ecb_cold 2867ecb_cold int
2176ev_version_minor (void) EV_THROW 2868ev_version_minor (void) EV_NOEXCEPT
2177{ 2869{
2178 return EV_VERSION_MINOR; 2870 return EV_VERSION_MINOR;
2179} 2871}
2180 2872
2181/* return true if we are running with elevated privileges and should ignore env variables */ 2873/* return true if we are running with elevated privileges and should ignore env variables */
2182int inline_size ecb_cold 2874inline_size ecb_cold int
2183enable_secure (void) 2875enable_secure (void)
2184{ 2876{
2185#ifdef _WIN32 2877#ifdef _WIN32
2186 return 0; 2878 return 0;
2187#else 2879#else
2188 return getuid () != geteuid () 2880 return getuid () != geteuid ()
2189 || getgid () != getegid (); 2881 || getgid () != getegid ();
2190#endif 2882#endif
2191} 2883}
2192 2884
2193unsigned int ecb_cold 2885ecb_cold
2886unsigned int
2194ev_supported_backends (void) EV_THROW 2887ev_supported_backends (void) EV_NOEXCEPT
2195{ 2888{
2196 unsigned int flags = 0; 2889 unsigned int flags = 0;
2197 2890
2198 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2891 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2199 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2892 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
2200 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2893 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2894 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
2895 if (EV_USE_IOURING ) flags |= EVBACKEND_IOURING;
2201 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2896 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
2202 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2897 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
2203 2898
2204 return flags; 2899 return flags;
2205} 2900}
2206 2901
2207unsigned int ecb_cold 2902ecb_cold
2903unsigned int
2208ev_recommended_backends (void) EV_THROW 2904ev_recommended_backends (void) EV_NOEXCEPT
2209{ 2905{
2210 unsigned int flags = ev_supported_backends (); 2906 unsigned int flags = ev_supported_backends ();
2211 2907
2212#ifndef __NetBSD__ 2908#ifndef __NetBSD__
2213 /* kqueue is borked on everything but netbsd apparently */ 2909 /* kqueue is borked on everything but netbsd apparently */
… …
2221#endif 2917#endif
2222#ifdef __FreeBSD__ 2918#ifdef __FreeBSD__
2223 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ 2919 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2224#endif 2920#endif
2225 2921
2922 /* TODO: linuxaio is very experimental */
2923#if !EV_RECOMMEND_LINUXAIO
2924 flags &= ~EVBACKEND_LINUXAIO;
2925#endif
2926 /* TODO: linuxaio is super experimental */
2927#if !EV_RECOMMEND_IOURING
2928 flags &= ~EVBACKEND_IOURING;
2929#endif
2930
2226 return flags; 2931 return flags;
2227} 2932}
2228 2933
2229unsigned int ecb_cold 2934ecb_cold
2935unsigned int
2230ev_embeddable_backends (void) EV_THROW 2936ev_embeddable_backends (void) EV_NOEXCEPT
2231{ 2937{
2232 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2938 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2233 2939
2234 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2940 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2235 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 2941 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2236 flags &= ~EVBACKEND_EPOLL; 2942 flags &= ~EVBACKEND_EPOLL;
2237 2943
2944 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
2945
2946 /* EVBACKEND_IOURING is practically embeddable, but the current implementation is not
2947 * because our backend_fd is the epoll fd we need as fallback.
2948 * if the kernel ever is fixed, this might change...
2949 */
2950
2238 return flags; 2951 return flags;
2239} 2952}
2240 2953
2241unsigned int 2954unsigned int
2242ev_backend (EV_P) EV_THROW 2955ev_backend (EV_P) EV_NOEXCEPT
2243{ 2956{
2244 return backend; 2957 return backend;
2245} 2958}
2246 2959
2247#if EV_FEATURE_API 2960#if EV_FEATURE_API
2248unsigned int 2961unsigned int
2249ev_iteration (EV_P) EV_THROW 2962ev_iteration (EV_P) EV_NOEXCEPT
2250{ 2963{
2251 return loop_count; 2964 return loop_count;
2252} 2965}
2253 2966
2254unsigned int 2967unsigned int
2255ev_depth (EV_P) EV_THROW 2968ev_depth (EV_P) EV_NOEXCEPT
2256{ 2969{
2257 return loop_depth; 2970 return loop_depth;
2258} 2971}
2259 2972
2260void 2973void
2261ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW 2974ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2262{ 2975{
2263 io_blocktime = interval; 2976 io_blocktime = interval;
2264} 2977}
2265 2978
2266void 2979void
2267ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW 2980ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2268{ 2981{
2269 timeout_blocktime = interval; 2982 timeout_blocktime = interval;
2270} 2983}
2271 2984
2272void 2985void
2273ev_set_userdata (EV_P_ void *data) EV_THROW 2986ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2274{ 2987{
2275 userdata = data; 2988 userdata = data;
2276} 2989}
2277 2990
2278void * 2991void *
2279ev_userdata (EV_P) EV_THROW 2992ev_userdata (EV_P) EV_NOEXCEPT
2280{ 2993{
2281 return userdata; 2994 return userdata;
2282} 2995}
2283 2996
2284void 2997void
2285ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW 2998ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
2286{ 2999{
2287 invoke_cb = invoke_pending_cb; 3000 invoke_cb = invoke_pending_cb;
2288} 3001}
2289 3002
2290void 3003void
2291ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW 3004ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
2292{ 3005{
2293 release_cb = release; 3006 release_cb = release;
2294 acquire_cb = acquire; 3007 acquire_cb = acquire;
2295} 3008}
2296#endif 3009#endif
2297 3010
2298/* initialise a loop structure, must be zero-initialised */ 3011/* initialise a loop structure, must be zero-initialised */
2299static void noinline ecb_cold 3012ecb_noinline ecb_cold
3013static void
2300loop_init (EV_P_ unsigned int flags) EV_THROW 3014loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
2301{ 3015{
2302 if (!backend) 3016 if (!backend)
2303 { 3017 {
2304 origflags = flags; 3018 origflags = flags;
2305 3019
… …
2350#if EV_ASYNC_ENABLE 3064#if EV_ASYNC_ENABLE
2351 async_pending = 0; 3065 async_pending = 0;
2352#endif 3066#endif
2353 pipe_write_skipped = 0; 3067 pipe_write_skipped = 0;
2354 pipe_write_wanted = 0; 3068 pipe_write_wanted = 0;
3069 evpipe [0] = -1;
3070 evpipe [1] = -1;
2355#if EV_USE_INOTIFY 3071#if EV_USE_INOTIFY
2356 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3072 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2357#endif 3073#endif
2358#if EV_USE_SIGNALFD 3074#if EV_USE_SIGNALFD
2359 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 3075 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
… …
2361 3077
2362 if (!(flags & EVBACKEND_MASK)) 3078 if (!(flags & EVBACKEND_MASK))
2363 flags |= ev_recommended_backends (); 3079 flags |= ev_recommended_backends ();
2364 3080
2365#if EV_USE_IOCP 3081#if EV_USE_IOCP
2366 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 3082 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2367#endif 3083#endif
2368#if EV_USE_PORT 3084#if EV_USE_PORT
2369 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3085 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
2370#endif 3086#endif
2371#if EV_USE_KQUEUE 3087#if EV_USE_KQUEUE
2372 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 3088 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
3089#endif
3090#if EV_USE_IOURING
3091 if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
3092#endif
3093#if EV_USE_LINUXAIO
3094 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
2373#endif 3095#endif
2374#if EV_USE_EPOLL 3096#if EV_USE_EPOLL
2375 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3097 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
2376#endif 3098#endif
2377#if EV_USE_POLL 3099#if EV_USE_POLL
2378 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3100 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
2379#endif 3101#endif
2380#if EV_USE_SELECT 3102#if EV_USE_SELECT
2381 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3103 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
2382#endif 3104#endif
2383 3105
2384 ev_prepare_init (&pending_w, pendingcb); 3106 ev_prepare_init (&pending_w, pendingcb);
2385 3107
2386#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3108#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
2389#endif 3111#endif
2390 } 3112 }
2391} 3113}
2392 3114
2393/* free up a loop structure */ 3115/* free up a loop structure */
2394void ecb_cold 3116ecb_cold
3117void
2395ev_loop_destroy (EV_P) 3118ev_loop_destroy (EV_P)
2396{ 3119{
2397 int i; 3120 int i;
2398 3121
2399#if EV_MULTIPLICITY 3122#if EV_MULTIPLICITY
… …
2402 return; 3125 return;
2403#endif 3126#endif
2404 3127
2405#if EV_CLEANUP_ENABLE 3128#if EV_CLEANUP_ENABLE
2406 /* queue cleanup watchers (and execute them) */ 3129 /* queue cleanup watchers (and execute them) */
2407 if (expect_false (cleanupcnt)) 3130 if (ecb_expect_false (cleanupcnt))
2408 { 3131 {
2409 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); 3132 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2410 EV_INVOKE_PENDING; 3133 EV_INVOKE_PENDING;
2411 } 3134 }
2412#endif 3135#endif
… …
2422 if (ev_is_active (&pipe_w)) 3145 if (ev_is_active (&pipe_w))
2423 { 3146 {
2424 /*ev_ref (EV_A);*/ 3147 /*ev_ref (EV_A);*/
2425 /*ev_io_stop (EV_A_ &pipe_w);*/ 3148 /*ev_io_stop (EV_A_ &pipe_w);*/
2426 3149
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]); 3150 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2435 EV_WIN32_CLOSE_FD (evpipe [1]); 3151 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2436 }
2437 } 3152 }
2438 3153
2439#if EV_USE_SIGNALFD 3154#if EV_USE_SIGNALFD
2440 if (ev_is_active (&sigfd_w)) 3155 if (ev_is_active (&sigfd_w))
2441 close (sigfd); 3156 close (sigfd);
… …
2448 3163
2449 if (backend_fd >= 0) 3164 if (backend_fd >= 0)
2450 close (backend_fd); 3165 close (backend_fd);
2451 3166
2452#if EV_USE_IOCP 3167#if EV_USE_IOCP
2453 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3168 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2454#endif 3169#endif
2455#if EV_USE_PORT 3170#if EV_USE_PORT
2456 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3171 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
2457#endif 3172#endif
2458#if EV_USE_KQUEUE 3173#if EV_USE_KQUEUE
2459 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3174 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3175#endif
3176#if EV_USE_IOURING
3177 if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
3178#endif
3179#if EV_USE_LINUXAIO
3180 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
2460#endif 3181#endif
2461#if EV_USE_EPOLL 3182#if EV_USE_EPOLL
2462 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3183 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
2463#endif 3184#endif
2464#if EV_USE_POLL 3185#if EV_USE_POLL
2465 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3186 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
2466#endif 3187#endif
2467#if EV_USE_SELECT 3188#if EV_USE_SELECT
2468 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3189 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
2469#endif 3190#endif
2470 3191
2471 for (i = NUMPRI; i--; ) 3192 for (i = NUMPRI; i--; )
2472 { 3193 {
2473 array_free (pending, [i]); 3194 array_free (pending, [i]);
… …
2515 3236
2516inline_size void 3237inline_size void
2517loop_fork (EV_P) 3238loop_fork (EV_P)
2518{ 3239{
2519#if EV_USE_PORT 3240#if EV_USE_PORT
2520 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3241 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
2521#endif 3242#endif
2522#if EV_USE_KQUEUE 3243#if EV_USE_KQUEUE
2523 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3244 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3245#endif
3246#if EV_USE_IOURING
3247 if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
3248#endif
3249#if EV_USE_LINUXAIO
3250 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
2524#endif 3251#endif
2525#if EV_USE_EPOLL 3252#if EV_USE_EPOLL
2526 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3253 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
2527#endif 3254#endif
2528#if EV_USE_INOTIFY 3255#if EV_USE_INOTIFY
2529 infy_fork (EV_A); 3256 infy_fork (EV_A);
2530#endif 3257#endif
2531 3258
3259#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2532 if (ev_is_active (&pipe_w)) 3260 if (ev_is_active (&pipe_w) && postfork != 2)
2533 { 3261 {
2534 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 3262 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2535 3263
2536 ev_ref (EV_A); 3264 ev_ref (EV_A);
2537 ev_io_stop (EV_A_ &pipe_w); 3265 ev_io_stop (EV_A_ &pipe_w);
2538 3266
2539#if EV_USE_EVENTFD
2540 if (evfd >= 0)
2541 close (evfd);
2542#endif
2543
2544 if (evpipe [0] >= 0) 3267 if (evpipe [0] >= 0)
2545 {
2546 EV_WIN32_CLOSE_FD (evpipe [0]); 3268 EV_WIN32_CLOSE_FD (evpipe [0]);
2547 EV_WIN32_CLOSE_FD (evpipe [1]);
2548 }
2549 3269
2550#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2551 evpipe_init (EV_A); 3270 evpipe_init (EV_A);
2552 /* now iterate over everything, in case we missed something */ 3271 /* iterate over everything, in case we missed something before */
2553 pipecb (EV_A_ &pipe_w, EV_READ); 3272 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2554#endif
2555 } 3273 }
3274#endif
2556 3275
2557 postfork = 0; 3276 postfork = 0;
2558} 3277}
2559 3278
2560#if EV_MULTIPLICITY 3279#if EV_MULTIPLICITY
2561 3280
3281ecb_cold
2562struct ev_loop * ecb_cold 3282struct ev_loop *
2563ev_loop_new (unsigned int flags) EV_THROW 3283ev_loop_new (unsigned int flags) EV_NOEXCEPT
2564{ 3284{
2565 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3285 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2566 3286
2567 memset (EV_A, 0, sizeof (struct ev_loop)); 3287 memset (EV_A, 0, sizeof (struct ev_loop));
2568 loop_init (EV_A_ flags); 3288 loop_init (EV_A_ flags);
… …
2575} 3295}
2576 3296
2577#endif /* multiplicity */ 3297#endif /* multiplicity */
2578 3298
2579#if EV_VERIFY 3299#if EV_VERIFY
2580static void noinline ecb_cold 3300ecb_noinline ecb_cold
3301static void
2581verify_watcher (EV_P_ W w) 3302verify_watcher (EV_P_ W w)
2582{ 3303{
2583 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3304 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2584 3305
2585 if (w->pending) 3306 if (w->pending)
2586 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3307 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2587} 3308}
2588 3309
2589static void noinline ecb_cold 3310ecb_noinline ecb_cold
3311static void
2590verify_heap (EV_P_ ANHE *heap, int N) 3312verify_heap (EV_P_ ANHE *heap, int N)
2591{ 3313{
2592 int i; 3314 int i;
2593 3315
2594 for (i = HEAP0; i < N + HEAP0; ++i) 3316 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2599 3321
2600 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3322 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2601 } 3323 }
2602} 3324}
2603 3325
2604static void noinline ecb_cold 3326ecb_noinline ecb_cold
3327static void
2605array_verify (EV_P_ W *ws, int cnt) 3328array_verify (EV_P_ W *ws, int cnt)
2606{ 3329{
2607 while (cnt--) 3330 while (cnt--)
2608 { 3331 {
2609 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3332 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2612} 3335}
2613#endif 3336#endif
2614 3337
2615#if EV_FEATURE_API 3338#if EV_FEATURE_API
2616void ecb_cold 3339void ecb_cold
2617ev_verify (EV_P) EV_THROW 3340ev_verify (EV_P) EV_NOEXCEPT
2618{ 3341{
2619#if EV_VERIFY 3342#if EV_VERIFY
2620 int i; 3343 int i;
2621 WL w, w2; 3344 WL w, w2;
2622 3345
… …
2698#endif 3421#endif
2699} 3422}
2700#endif 3423#endif
2701 3424
2702#if EV_MULTIPLICITY 3425#if EV_MULTIPLICITY
3426ecb_cold
2703struct ev_loop * ecb_cold 3427struct ev_loop *
2704#else 3428#else
2705int 3429int
2706#endif 3430#endif
2707ev_default_loop (unsigned int flags) EV_THROW 3431ev_default_loop (unsigned int flags) EV_NOEXCEPT
2708{ 3432{
2709 if (!ev_default_loop_ptr) 3433 if (!ev_default_loop_ptr)
2710 { 3434 {
2711#if EV_MULTIPLICITY 3435#if EV_MULTIPLICITY
2712 EV_P = ev_default_loop_ptr = &default_loop_struct; 3436 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2731 3455
2732 return ev_default_loop_ptr; 3456 return ev_default_loop_ptr;
2733} 3457}
2734 3458
2735void 3459void
2736ev_loop_fork (EV_P) EV_THROW 3460ev_loop_fork (EV_P) EV_NOEXCEPT
2737{ 3461{
2738 postfork = 1; 3462 postfork = 1;
2739} 3463}
2740 3464
2741/*****************************************************************************/ 3465/*****************************************************************************/
… …
2745{ 3469{
2746 EV_CB_INVOKE ((W)w, revents); 3470 EV_CB_INVOKE ((W)w, revents);
2747} 3471}
2748 3472
2749unsigned int 3473unsigned int
2750ev_pending_count (EV_P) EV_THROW 3474ev_pending_count (EV_P) EV_NOEXCEPT
2751{ 3475{
2752 int pri; 3476 int pri;
2753 unsigned int count = 0; 3477 unsigned int count = 0;
2754 3478
2755 for (pri = NUMPRI; pri--; ) 3479 for (pri = NUMPRI; pri--; )
2756 count += pendingcnt [pri]; 3480 count += pendingcnt [pri];
2757 3481
2758 return count; 3482 return count;
2759} 3483}
2760 3484
2761void noinline 3485ecb_noinline
3486void
2762ev_invoke_pending (EV_P) 3487ev_invoke_pending (EV_P)
2763{ 3488{
2764 for (pendingpri = NUMPRI; pendingpri--; ) /* pendingpri is modified during the loop */ 3489 pendingpri = NUMPRI;
3490
3491 do
3492 {
3493 --pendingpri;
3494
3495 /* pendingpri possibly gets modified in the inner loop */
2765 while (pendingcnt [pendingpri]) 3496 while (pendingcnt [pendingpri])
2766 { 3497 {
2767 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri]; 3498 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2768 3499
2769 p->w->pending = 0; 3500 p->w->pending = 0;
2770 EV_CB_INVOKE (p->w, p->events); 3501 EV_CB_INVOKE (p->w, p->events);
2771 EV_FREQUENT_CHECK; 3502 EV_FREQUENT_CHECK;
2772 } 3503 }
3504 }
3505 while (pendingpri);
2773} 3506}
2774 3507
2775#if EV_IDLE_ENABLE 3508#if EV_IDLE_ENABLE
2776/* make idle watchers pending. this handles the "call-idle */ 3509/* make idle watchers pending. this handles the "call-idle */
2777/* only when higher priorities are idle" logic */ 3510/* only when higher priorities are idle" logic */
2778inline_size void 3511inline_size void
2779idle_reify (EV_P) 3512idle_reify (EV_P)
2780{ 3513{
2781 if (expect_false (idleall)) 3514 if (ecb_expect_false (idleall))
2782 { 3515 {
2783 int pri; 3516 int pri;
2784 3517
2785 for (pri = NUMPRI; pri--; ) 3518 for (pri = NUMPRI; pri--; )
2786 { 3519 {
… …
2816 { 3549 {
2817 ev_at (w) += w->repeat; 3550 ev_at (w) += w->repeat;
2818 if (ev_at (w) < mn_now) 3551 if (ev_at (w) < mn_now)
2819 ev_at (w) = mn_now; 3552 ev_at (w) = mn_now;
2820 3553
2821 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 3554 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > EV_TS_CONST (0.)));
2822 3555
2823 ANHE_at_cache (timers [HEAP0]); 3556 ANHE_at_cache (timers [HEAP0]);
2824 downheap (timers, timercnt, HEAP0); 3557 downheap (timers, timercnt, HEAP0);
2825 } 3558 }
2826 else 3559 else
… …
2835 } 3568 }
2836} 3569}
2837 3570
2838#if EV_PERIODIC_ENABLE 3571#if EV_PERIODIC_ENABLE
2839 3572
2840static void noinline 3573ecb_noinline
3574static void
2841periodic_recalc (EV_P_ ev_periodic *w) 3575periodic_recalc (EV_P_ ev_periodic *w)
2842{ 3576{
2843 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3577 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); 3578 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2845 3579
… …
2847 while (at <= ev_rt_now) 3581 while (at <= ev_rt_now)
2848 { 3582 {
2849 ev_tstamp nat = at + w->interval; 3583 ev_tstamp nat = at + w->interval;
2850 3584
2851 /* when resolution fails us, we use ev_rt_now */ 3585 /* when resolution fails us, we use ev_rt_now */
2852 if (expect_false (nat == at)) 3586 if (ecb_expect_false (nat == at))
2853 { 3587 {
2854 at = ev_rt_now; 3588 at = ev_rt_now;
2855 break; 3589 break;
2856 } 3590 }
2857 3591
… …
2903 } 3637 }
2904} 3638}
2905 3639
2906/* simply recalculate all periodics */ 3640/* simply recalculate all periodics */
2907/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3641/* TODO: maybe ensure that at least one event happens when jumping forward? */
2908static void noinline ecb_cold 3642ecb_noinline ecb_cold
3643static void
2909periodics_reschedule (EV_P) 3644periodics_reschedule (EV_P)
2910{ 3645{
2911 int i; 3646 int i;
2912 3647
2913 /* adjust periodics after time jump */ 3648 /* adjust periodics after time jump */
… …
2926 reheap (periodics, periodiccnt); 3661 reheap (periodics, periodiccnt);
2927} 3662}
2928#endif 3663#endif
2929 3664
2930/* adjust all timers by a given offset */ 3665/* adjust all timers by a given offset */
2931static void noinline ecb_cold 3666ecb_noinline ecb_cold
3667static void
2932timers_reschedule (EV_P_ ev_tstamp adjust) 3668timers_reschedule (EV_P_ ev_tstamp adjust)
2933{ 3669{
2934 int i; 3670 int i;
2935 3671
2936 for (i = 0; i < timercnt; ++i) 3672 for (i = 0; i < timercnt; ++i)
… …
2945/* also detect if there was a timejump, and act accordingly */ 3681/* also detect if there was a timejump, and act accordingly */
2946inline_speed void 3682inline_speed void
2947time_update (EV_P_ ev_tstamp max_block) 3683time_update (EV_P_ ev_tstamp max_block)
2948{ 3684{
2949#if EV_USE_MONOTONIC 3685#if EV_USE_MONOTONIC
2950 if (expect_true (have_monotonic)) 3686 if (ecb_expect_true (have_monotonic))
2951 { 3687 {
2952 int i; 3688 int i;
2953 ev_tstamp odiff = rtmn_diff; 3689 ev_tstamp odiff = rtmn_diff;
2954 3690
2955 mn_now = get_clock (); 3691 mn_now = get_clock ();
2956 3692
2957 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3693 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2958 /* interpolate in the meantime */ 3694 /* interpolate in the meantime */
2959 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3695 if (ecb_expect_true (mn_now - now_floor < EV_TS_CONST (MIN_TIMEJUMP * .5)))
2960 { 3696 {
2961 ev_rt_now = rtmn_diff + mn_now; 3697 ev_rt_now = rtmn_diff + mn_now;
2962 return; 3698 return;
2963 } 3699 }
2964 3700
… …
2978 ev_tstamp diff; 3714 ev_tstamp diff;
2979 rtmn_diff = ev_rt_now - mn_now; 3715 rtmn_diff = ev_rt_now - mn_now;
2980 3716
2981 diff = odiff - rtmn_diff; 3717 diff = odiff - rtmn_diff;
2982 3718
2983 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP)) 3719 if (ecb_expect_true ((diff < EV_TS_CONST (0.) ? -diff : diff) < EV_TS_CONST (MIN_TIMEJUMP)))
2984 return; /* all is well */ 3720 return; /* all is well */
2985 3721
2986 ev_rt_now = ev_time (); 3722 ev_rt_now = ev_time ();
2987 mn_now = get_clock (); 3723 mn_now = get_clock ();
2988 now_floor = mn_now; 3724 now_floor = mn_now;
… …
2997 else 3733 else
2998#endif 3734#endif
2999 { 3735 {
3000 ev_rt_now = ev_time (); 3736 ev_rt_now = ev_time ();
3001 3737
3002 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 3738 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + EV_TS_CONST (MIN_TIMEJUMP)))
3003 { 3739 {
3004 /* adjust timers. this is easy, as the offset is the same for all of them */ 3740 /* adjust timers. this is easy, as the offset is the same for all of them */
3005 timers_reschedule (EV_A_ ev_rt_now - mn_now); 3741 timers_reschedule (EV_A_ ev_rt_now - mn_now);
3006#if EV_PERIODIC_ENABLE 3742#if EV_PERIODIC_ENABLE
3007 periodics_reschedule (EV_A); 3743 periodics_reschedule (EV_A);
… …
3030#if EV_VERIFY >= 2 3766#if EV_VERIFY >= 2
3031 ev_verify (EV_A); 3767 ev_verify (EV_A);
3032#endif 3768#endif
3033 3769
3034#ifndef _WIN32 3770#ifndef _WIN32
3035 if (expect_false (curpid)) /* penalise the forking check even more */ 3771 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
3036 if (expect_false (getpid () != curpid)) 3772 if (ecb_expect_false (getpid () != curpid))
3037 { 3773 {
3038 curpid = getpid (); 3774 curpid = getpid ();
3039 postfork = 1; 3775 postfork = 1;
3040 } 3776 }
3041#endif 3777#endif
3042 3778
3043#if EV_FORK_ENABLE 3779#if EV_FORK_ENABLE
3044 /* we might have forked, so queue fork handlers */ 3780 /* we might have forked, so queue fork handlers */
3045 if (expect_false (postfork)) 3781 if (ecb_expect_false (postfork))
3046 if (forkcnt) 3782 if (forkcnt)
3047 { 3783 {
3048 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3784 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
3049 EV_INVOKE_PENDING; 3785 EV_INVOKE_PENDING;
3050 } 3786 }
3051#endif 3787#endif
3052 3788
3053#if EV_PREPARE_ENABLE 3789#if EV_PREPARE_ENABLE
3054 /* queue prepare watchers (and execute them) */ 3790 /* queue prepare watchers (and execute them) */
3055 if (expect_false (preparecnt)) 3791 if (ecb_expect_false (preparecnt))
3056 { 3792 {
3057 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3793 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
3058 EV_INVOKE_PENDING; 3794 EV_INVOKE_PENDING;
3059 } 3795 }
3060#endif 3796#endif
3061 3797
3062 if (expect_false (loop_done)) 3798 if (ecb_expect_false (loop_done))
3063 break; 3799 break;
3064 3800
3065 /* we might have forked, so reify kernel state if necessary */ 3801 /* we might have forked, so reify kernel state if necessary */
3066 if (expect_false (postfork)) 3802 if (ecb_expect_false (postfork))
3067 loop_fork (EV_A); 3803 loop_fork (EV_A);
3068 3804
3069 /* update fd-related kernel structures */ 3805 /* update fd-related kernel structures */
3070 fd_reify (EV_A); 3806 fd_reify (EV_A);
3071 3807
… …
3076 3812
3077 /* remember old timestamp for io_blocktime calculation */ 3813 /* remember old timestamp for io_blocktime calculation */
3078 ev_tstamp prev_mn_now = mn_now; 3814 ev_tstamp prev_mn_now = mn_now;
3079 3815
3080 /* update time to cancel out callback processing overhead */ 3816 /* update time to cancel out callback processing overhead */
3081 time_update (EV_A_ 1e100); 3817 time_update (EV_A_ EV_TS_CONST (EV_TSTAMP_HUGE));
3082 3818
3083 /* from now on, we want a pipe-wake-up */ 3819 /* from now on, we want a pipe-wake-up */
3084 pipe_write_wanted = 1; 3820 pipe_write_wanted = 1;
3085 3821
3086 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */ 3822 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3087 3823
3088 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) 3824 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
3089 { 3825 {
3090 waittime = MAX_BLOCKTIME; 3826 waittime = EV_TS_CONST (MAX_BLOCKTIME);
3091 3827
3092 if (timercnt) 3828 if (timercnt)
3093 { 3829 {
3094 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now; 3830 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
3095 if (waittime > to) waittime = to; 3831 if (waittime > to) waittime = to;
… …
3102 if (waittime > to) waittime = to; 3838 if (waittime > to) waittime = to;
3103 } 3839 }
3104#endif 3840#endif
3105 3841
3106 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3842 /* don't let timeouts decrease the waittime below timeout_blocktime */
3107 if (expect_false (waittime < timeout_blocktime)) 3843 if (ecb_expect_false (waittime < timeout_blocktime))
3108 waittime = timeout_blocktime; 3844 waittime = timeout_blocktime;
3109 3845
3110 /* at this point, we NEED to wait, so we have to ensure */ 3846 /* at this point, we NEED to wait, so we have to ensure */
3111 /* to pass a minimum nonzero value to the backend */ 3847 /* to pass a minimum nonzero value to the backend */
3112 if (expect_false (waittime < backend_mintime)) 3848 if (ecb_expect_false (waittime < backend_mintime))
3113 waittime = backend_mintime; 3849 waittime = backend_mintime;
3114 3850
3115 /* extra check because io_blocktime is commonly 0 */ 3851 /* extra check because io_blocktime is commonly 0 */
3116 if (expect_false (io_blocktime)) 3852 if (ecb_expect_false (io_blocktime))
3117 { 3853 {
3118 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3854 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3119 3855
3120 if (sleeptime > waittime - backend_mintime) 3856 if (sleeptime > waittime - backend_mintime)
3121 sleeptime = waittime - backend_mintime; 3857 sleeptime = waittime - backend_mintime;
3122 3858
3123 if (expect_true (sleeptime > 0.)) 3859 if (ecb_expect_true (sleeptime > EV_TS_CONST (0.)))
3124 { 3860 {
3125 ev_sleep (sleeptime); 3861 ev_sleep (sleeptime);
3126 waittime -= sleeptime; 3862 waittime -= sleeptime;
3127 } 3863 }
3128 } 3864 }
… …
3135 backend_poll (EV_A_ waittime); 3871 backend_poll (EV_A_ waittime);
3136 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3872 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3137 3873
3138 pipe_write_wanted = 0; /* just an optimisation, no fence needed */ 3874 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3139 3875
3140 MEMORY_FENCE_ACQUIRE; 3876 ECB_MEMORY_FENCE_ACQUIRE;
3141 if (pipe_write_skipped) 3877 if (pipe_write_skipped)
3142 { 3878 {
3143 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 3879 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3144 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3880 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3145 } 3881 }
3146 3882
3147
3148 /* update ev_rt_now, do magic */ 3883 /* update ev_rt_now, do magic */
3149 time_update (EV_A_ waittime + sleeptime); 3884 time_update (EV_A_ waittime + sleeptime);
3150 } 3885 }
3151 3886
3152 /* queue pending timers and reschedule them */ 3887 /* queue pending timers and reschedule them */
… …
3160 idle_reify (EV_A); 3895 idle_reify (EV_A);
3161#endif 3896#endif
3162 3897
3163#if EV_CHECK_ENABLE 3898#if EV_CHECK_ENABLE
3164 /* queue check watchers, to be executed first */ 3899 /* queue check watchers, to be executed first */
3165 if (expect_false (checkcnt)) 3900 if (ecb_expect_false (checkcnt))
3166 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3901 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3167#endif 3902#endif
3168 3903
3169 EV_INVOKE_PENDING; 3904 EV_INVOKE_PENDING;
3170 } 3905 }
3171 while (expect_true ( 3906 while (ecb_expect_true (
3172 activecnt 3907 activecnt
3173 && !loop_done 3908 && !loop_done
3174 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) 3909 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
3175 )); 3910 ));
3176 3911
… …
3183 3918
3184 return activecnt; 3919 return activecnt;
3185} 3920}
3186 3921
3187void 3922void
3188ev_break (EV_P_ int how) EV_THROW 3923ev_break (EV_P_ int how) EV_NOEXCEPT
3189{ 3924{
3190 loop_done = how; 3925 loop_done = how;
3191} 3926}
3192 3927
3193void 3928void
3194ev_ref (EV_P) EV_THROW 3929ev_ref (EV_P) EV_NOEXCEPT
3195{ 3930{
3196 ++activecnt; 3931 ++activecnt;
3197} 3932}
3198 3933
3199void 3934void
3200ev_unref (EV_P) EV_THROW 3935ev_unref (EV_P) EV_NOEXCEPT
3201{ 3936{
3202 --activecnt; 3937 --activecnt;
3203} 3938}
3204 3939
3205void 3940void
3206ev_now_update (EV_P) EV_THROW 3941ev_now_update (EV_P) EV_NOEXCEPT
3207{ 3942{
3208 time_update (EV_A_ 1e100); 3943 time_update (EV_A_ EV_TSTAMP_HUGE);
3209} 3944}
3210 3945
3211void 3946void
3212ev_suspend (EV_P) EV_THROW 3947ev_suspend (EV_P) EV_NOEXCEPT
3213{ 3948{
3214 ev_now_update (EV_A); 3949 ev_now_update (EV_A);
3215} 3950}
3216 3951
3217void 3952void
3218ev_resume (EV_P) EV_THROW 3953ev_resume (EV_P) EV_NOEXCEPT
3219{ 3954{
3220 ev_tstamp mn_prev = mn_now; 3955 ev_tstamp mn_prev = mn_now;
3221 3956
3222 ev_now_update (EV_A); 3957 ev_now_update (EV_A);
3223 timers_reschedule (EV_A_ mn_now - mn_prev); 3958 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
3240inline_size void 3975inline_size void
3241wlist_del (WL *head, WL elem) 3976wlist_del (WL *head, WL elem)
3242{ 3977{
3243 while (*head) 3978 while (*head)
3244 { 3979 {
3245 if (expect_true (*head == elem)) 3980 if (ecb_expect_true (*head == elem))
3246 { 3981 {
3247 *head = elem->next; 3982 *head = elem->next;
3248 break; 3983 break;
3249 } 3984 }
3250 3985
… …
3262 w->pending = 0; 3997 w->pending = 0;
3263 } 3998 }
3264} 3999}
3265 4000
3266int 4001int
3267ev_clear_pending (EV_P_ void *w) EV_THROW 4002ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
3268{ 4003{
3269 W w_ = (W)w; 4004 W w_ = (W)w;
3270 int pending = w_->pending; 4005 int pending = w_->pending;
3271 4006
3272 if (expect_true (pending)) 4007 if (ecb_expect_true (pending))
3273 { 4008 {
3274 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4009 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3275 p->w = (W)&pending_w; 4010 p->w = (W)&pending_w;
3276 w_->pending = 0; 4011 w_->pending = 0;
3277 return p->events; 4012 return p->events;
… …
3304 w->active = 0; 4039 w->active = 0;
3305} 4040}
3306 4041
3307/*****************************************************************************/ 4042/*****************************************************************************/
3308 4043
3309void noinline 4044ecb_noinline
4045void
3310ev_io_start (EV_P_ ev_io *w) EV_THROW 4046ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
3311{ 4047{
3312 int fd = w->fd; 4048 int fd = w->fd;
3313 4049
3314 if (expect_false (ev_is_active (w))) 4050 if (ecb_expect_false (ev_is_active (w)))
3315 return; 4051 return;
3316 4052
3317 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4053 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)))); 4054 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
3319 4055
4056#if EV_VERIFY >= 2
4057 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4058#endif
3320 EV_FREQUENT_CHECK; 4059 EV_FREQUENT_CHECK;
3321 4060
3322 ev_start (EV_A_ (W)w, 1); 4061 ev_start (EV_A_ (W)w, 1);
3323 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4062 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
3324 wlist_add (&anfds[fd].head, (WL)w); 4063 wlist_add (&anfds[fd].head, (WL)w);
3325 4064
3326 /* common bug, apparently */ 4065 /* common bug, apparently */
3327 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w)); 4066 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3328 4067
… …
3330 w->events &= ~EV__IOFDSET; 4069 w->events &= ~EV__IOFDSET;
3331 4070
3332 EV_FREQUENT_CHECK; 4071 EV_FREQUENT_CHECK;
3333} 4072}
3334 4073
3335void noinline 4074ecb_noinline
4075void
3336ev_io_stop (EV_P_ ev_io *w) EV_THROW 4076ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
3337{ 4077{
3338 clear_pending (EV_A_ (W)w); 4078 clear_pending (EV_A_ (W)w);
3339 if (expect_false (!ev_is_active (w))) 4079 if (ecb_expect_false (!ev_is_active (w)))
3340 return; 4080 return;
3341 4081
3342 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4082 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
3343 4083
4084#if EV_VERIFY >= 2
4085 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4086#endif
3344 EV_FREQUENT_CHECK; 4087 EV_FREQUENT_CHECK;
3345 4088
3346 wlist_del (&anfds[w->fd].head, (WL)w); 4089 wlist_del (&anfds[w->fd].head, (WL)w);
3347 ev_stop (EV_A_ (W)w); 4090 ev_stop (EV_A_ (W)w);
3348 4091
3349 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 4092 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3350 4093
3351 EV_FREQUENT_CHECK; 4094 EV_FREQUENT_CHECK;
3352} 4095}
3353 4096
3354void noinline 4097ecb_noinline
4098void
3355ev_timer_start (EV_P_ ev_timer *w) EV_THROW 4099ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
3356{ 4100{
3357 if (expect_false (ev_is_active (w))) 4101 if (ecb_expect_false (ev_is_active (w)))
3358 return; 4102 return;
3359 4103
3360 ev_at (w) += mn_now; 4104 ev_at (w) += mn_now;
3361 4105
3362 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4106 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
3363 4107
3364 EV_FREQUENT_CHECK; 4108 EV_FREQUENT_CHECK;
3365 4109
3366 ++timercnt; 4110 ++timercnt;
3367 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4111 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
3368 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4112 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
3369 ANHE_w (timers [ev_active (w)]) = (WT)w; 4113 ANHE_w (timers [ev_active (w)]) = (WT)w;
3370 ANHE_at_cache (timers [ev_active (w)]); 4114 ANHE_at_cache (timers [ev_active (w)]);
3371 upheap (timers, ev_active (w)); 4115 upheap (timers, ev_active (w));
3372 4116
3373 EV_FREQUENT_CHECK; 4117 EV_FREQUENT_CHECK;
3374 4118
3375 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4119 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
3376} 4120}
3377 4121
3378void noinline 4122ecb_noinline
4123void
3379ev_timer_stop (EV_P_ ev_timer *w) EV_THROW 4124ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
3380{ 4125{
3381 clear_pending (EV_A_ (W)w); 4126 clear_pending (EV_A_ (W)w);
3382 if (expect_false (!ev_is_active (w))) 4127 if (ecb_expect_false (!ev_is_active (w)))
3383 return; 4128 return;
3384 4129
3385 EV_FREQUENT_CHECK; 4130 EV_FREQUENT_CHECK;
3386 4131
3387 { 4132 {
… …
3389 4134
3390 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4135 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
3391 4136
3392 --timercnt; 4137 --timercnt;
3393 4138
3394 if (expect_true (active < timercnt + HEAP0)) 4139 if (ecb_expect_true (active < timercnt + HEAP0))
3395 { 4140 {
3396 timers [active] = timers [timercnt + HEAP0]; 4141 timers [active] = timers [timercnt + HEAP0];
3397 adjustheap (timers, timercnt, active); 4142 adjustheap (timers, timercnt, active);
3398 } 4143 }
3399 } 4144 }
… …
3403 ev_stop (EV_A_ (W)w); 4148 ev_stop (EV_A_ (W)w);
3404 4149
3405 EV_FREQUENT_CHECK; 4150 EV_FREQUENT_CHECK;
3406} 4151}
3407 4152
3408void noinline 4153ecb_noinline
4154void
3409ev_timer_again (EV_P_ ev_timer *w) EV_THROW 4155ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
3410{ 4156{
3411 EV_FREQUENT_CHECK; 4157 EV_FREQUENT_CHECK;
3412 4158
3413 clear_pending (EV_A_ (W)w); 4159 clear_pending (EV_A_ (W)w);
3414 4160
… …
3431 4177
3432 EV_FREQUENT_CHECK; 4178 EV_FREQUENT_CHECK;
3433} 4179}
3434 4180
3435ev_tstamp 4181ev_tstamp
3436ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW 4182ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
3437{ 4183{
3438 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4184 return ev_at (w) - (ev_is_active (w) ? mn_now : EV_TS_CONST (0.));
3439} 4185}
3440 4186
3441#if EV_PERIODIC_ENABLE 4187#if EV_PERIODIC_ENABLE
3442void noinline 4188ecb_noinline
4189void
3443ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW 4190ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
3444{ 4191{
3445 if (expect_false (ev_is_active (w))) 4192 if (ecb_expect_false (ev_is_active (w)))
3446 return; 4193 return;
3447 4194
3448 if (w->reschedule_cb) 4195 if (w->reschedule_cb)
3449 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4196 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
3450 else if (w->interval) 4197 else if (w->interval)
… …
3457 4204
3458 EV_FREQUENT_CHECK; 4205 EV_FREQUENT_CHECK;
3459 4206
3460 ++periodiccnt; 4207 ++periodiccnt;
3461 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4208 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
3462 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4209 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
3463 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4210 ANHE_w (periodics [ev_active (w)]) = (WT)w;
3464 ANHE_at_cache (periodics [ev_active (w)]); 4211 ANHE_at_cache (periodics [ev_active (w)]);
3465 upheap (periodics, ev_active (w)); 4212 upheap (periodics, ev_active (w));
3466 4213
3467 EV_FREQUENT_CHECK; 4214 EV_FREQUENT_CHECK;
3468 4215
3469 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4216 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
3470} 4217}
3471 4218
3472void noinline 4219ecb_noinline
4220void
3473ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW 4221ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
3474{ 4222{
3475 clear_pending (EV_A_ (W)w); 4223 clear_pending (EV_A_ (W)w);
3476 if (expect_false (!ev_is_active (w))) 4224 if (ecb_expect_false (!ev_is_active (w)))
3477 return; 4225 return;
3478 4226
3479 EV_FREQUENT_CHECK; 4227 EV_FREQUENT_CHECK;
3480 4228
3481 { 4229 {
… …
3483 4231
3484 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4232 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
3485 4233
3486 --periodiccnt; 4234 --periodiccnt;
3487 4235
3488 if (expect_true (active < periodiccnt + HEAP0)) 4236 if (ecb_expect_true (active < periodiccnt + HEAP0))
3489 { 4237 {
3490 periodics [active] = periodics [periodiccnt + HEAP0]; 4238 periodics [active] = periodics [periodiccnt + HEAP0];
3491 adjustheap (periodics, periodiccnt, active); 4239 adjustheap (periodics, periodiccnt, active);
3492 } 4240 }
3493 } 4241 }
… …
3495 ev_stop (EV_A_ (W)w); 4243 ev_stop (EV_A_ (W)w);
3496 4244
3497 EV_FREQUENT_CHECK; 4245 EV_FREQUENT_CHECK;
3498} 4246}
3499 4247
3500void noinline 4248ecb_noinline
4249void
3501ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW 4250ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
3502{ 4251{
3503 /* TODO: use adjustheap and recalculation */ 4252 /* TODO: use adjustheap and recalculation */
3504 ev_periodic_stop (EV_A_ w); 4253 ev_periodic_stop (EV_A_ w);
3505 ev_periodic_start (EV_A_ w); 4254 ev_periodic_start (EV_A_ w);
3506} 4255}
… …
3510# define SA_RESTART 0 4259# define SA_RESTART 0
3511#endif 4260#endif
3512 4261
3513#if EV_SIGNAL_ENABLE 4262#if EV_SIGNAL_ENABLE
3514 4263
3515void noinline 4264ecb_noinline
4265void
3516ev_signal_start (EV_P_ ev_signal *w) EV_THROW 4266ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
3517{ 4267{
3518 if (expect_false (ev_is_active (w))) 4268 if (ecb_expect_false (ev_is_active (w)))
3519 return; 4269 return;
3520 4270
3521 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4271 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
3522 4272
3523#if EV_MULTIPLICITY 4273#if EV_MULTIPLICITY
3524 assert (("libev: a signal must not be attached to two different loops", 4274 assert (("libev: a signal must not be attached to two different loops",
3525 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4275 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3526 4276
3527 signals [w->signum - 1].loop = EV_A; 4277 signals [w->signum - 1].loop = EV_A;
4278 ECB_MEMORY_FENCE_RELEASE;
3528#endif 4279#endif
3529 4280
3530 EV_FREQUENT_CHECK; 4281 EV_FREQUENT_CHECK;
3531 4282
3532#if EV_USE_SIGNALFD 4283#if EV_USE_SIGNALFD
… …
3591 } 4342 }
3592 4343
3593 EV_FREQUENT_CHECK; 4344 EV_FREQUENT_CHECK;
3594} 4345}
3595 4346
3596void noinline 4347ecb_noinline
4348void
3597ev_signal_stop (EV_P_ ev_signal *w) EV_THROW 4349ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
3598{ 4350{
3599 clear_pending (EV_A_ (W)w); 4351 clear_pending (EV_A_ (W)w);
3600 if (expect_false (!ev_is_active (w))) 4352 if (ecb_expect_false (!ev_is_active (w)))
3601 return; 4353 return;
3602 4354
3603 EV_FREQUENT_CHECK; 4355 EV_FREQUENT_CHECK;
3604 4356
3605 wlist_del (&signals [w->signum - 1].head, (WL)w); 4357 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
3633#endif 4385#endif
3634 4386
3635#if EV_CHILD_ENABLE 4387#if EV_CHILD_ENABLE
3636 4388
3637void 4389void
3638ev_child_start (EV_P_ ev_child *w) EV_THROW 4390ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
3639{ 4391{
3640#if EV_MULTIPLICITY 4392#if EV_MULTIPLICITY
3641 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4393 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3642#endif 4394#endif
3643 if (expect_false (ev_is_active (w))) 4395 if (ecb_expect_false (ev_is_active (w)))
3644 return; 4396 return;
3645 4397
3646 EV_FREQUENT_CHECK; 4398 EV_FREQUENT_CHECK;
3647 4399
3648 ev_start (EV_A_ (W)w, 1); 4400 ev_start (EV_A_ (W)w, 1);
… …
3650 4402
3651 EV_FREQUENT_CHECK; 4403 EV_FREQUENT_CHECK;
3652} 4404}
3653 4405
3654void 4406void
3655ev_child_stop (EV_P_ ev_child *w) EV_THROW 4407ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
3656{ 4408{
3657 clear_pending (EV_A_ (W)w); 4409 clear_pending (EV_A_ (W)w);
3658 if (expect_false (!ev_is_active (w))) 4410 if (ecb_expect_false (!ev_is_active (w)))
3659 return; 4411 return;
3660 4412
3661 EV_FREQUENT_CHECK; 4413 EV_FREQUENT_CHECK;
3662 4414
3663 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); 4415 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
… …
3677 4429
3678#define DEF_STAT_INTERVAL 5.0074891 4430#define DEF_STAT_INTERVAL 5.0074891
3679#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4431#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3680#define MIN_STAT_INTERVAL 0.1074891 4432#define MIN_STAT_INTERVAL 0.1074891
3681 4433
3682static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4434ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
3683 4435
3684#if EV_USE_INOTIFY 4436#if EV_USE_INOTIFY
3685 4437
3686/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4438/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3687# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4439# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3688 4440
3689static void noinline 4441ecb_noinline
4442static void
3690infy_add (EV_P_ ev_stat *w) 4443infy_add (EV_P_ ev_stat *w)
3691{ 4444{
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); 4445 w->wd = inotify_add_watch (fs_fd, w->path,
4446 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4447 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4448 | IN_DONT_FOLLOW | IN_MASK_ADD);
3693 4449
3694 if (w->wd >= 0) 4450 if (w->wd >= 0)
3695 { 4451 {
3696 struct statfs sfs; 4452 struct statfs sfs;
3697 4453
… …
3701 4457
3702 if (!fs_2625) 4458 if (!fs_2625)
3703 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4459 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3704 else if (!statfs (w->path, &sfs) 4460 else if (!statfs (w->path, &sfs)
3705 && (sfs.f_type == 0x1373 /* devfs */ 4461 && (sfs.f_type == 0x1373 /* devfs */
4462 || sfs.f_type == 0x4006 /* fat */
4463 || sfs.f_type == 0x4d44 /* msdos */
3706 || sfs.f_type == 0xEF53 /* ext2/3 */ 4464 || sfs.f_type == 0xEF53 /* ext2/3 */
4465 || sfs.f_type == 0x72b6 /* jffs2 */
4466 || sfs.f_type == 0x858458f6 /* ramfs */
4467 || sfs.f_type == 0x5346544e /* ntfs */
3707 || sfs.f_type == 0x3153464a /* jfs */ 4468 || sfs.f_type == 0x3153464a /* jfs */
4469 || sfs.f_type == 0x9123683e /* btrfs */
3708 || sfs.f_type == 0x52654973 /* reiser3 */ 4470 || sfs.f_type == 0x52654973 /* reiser3 */
3709 || sfs.f_type == 0x01021994 /* tempfs */ 4471 || sfs.f_type == 0x01021994 /* tmpfs */
3710 || sfs.f_type == 0x58465342 /* xfs */)) 4472 || sfs.f_type == 0x58465342 /* xfs */))
3711 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4473 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3712 else 4474 else
3713 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4475 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3714 } 4476 }
… …
3749 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4511 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3750 ev_timer_again (EV_A_ &w->timer); 4512 ev_timer_again (EV_A_ &w->timer);
3751 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4513 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3752} 4514}
3753 4515
3754static void noinline 4516ecb_noinline
4517static void
3755infy_del (EV_P_ ev_stat *w) 4518infy_del (EV_P_ ev_stat *w)
3756{ 4519{
3757 int slot; 4520 int slot;
3758 int wd = w->wd; 4521 int wd = w->wd;
3759 4522
… …
3766 4529
3767 /* remove this watcher, if others are watching it, they will rearm */ 4530 /* remove this watcher, if others are watching it, they will rearm */
3768 inotify_rm_watch (fs_fd, wd); 4531 inotify_rm_watch (fs_fd, wd);
3769} 4532}
3770 4533
3771static void noinline 4534ecb_noinline
4535static void
3772infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4536infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3773{ 4537{
3774 if (slot < 0) 4538 if (slot < 0)
3775 /* overflow, need to check for all hash slots */ 4539 /* overflow, need to check for all hash slots */
3776 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4540 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3812 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4576 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3813 ofs += sizeof (struct inotify_event) + ev->len; 4577 ofs += sizeof (struct inotify_event) + ev->len;
3814 } 4578 }
3815} 4579}
3816 4580
3817inline_size void ecb_cold 4581inline_size ecb_cold
4582void
3818ev_check_2625 (EV_P) 4583ev_check_2625 (EV_P)
3819{ 4584{
3820 /* kernels < 2.6.25 are borked 4585 /* kernels < 2.6.25 are borked
3821 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4586 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3822 */ 4587 */
… …
3912#else 4677#else
3913# define EV_LSTAT(p,b) lstat (p, b) 4678# define EV_LSTAT(p,b) lstat (p, b)
3914#endif 4679#endif
3915 4680
3916void 4681void
3917ev_stat_stat (EV_P_ ev_stat *w) EV_THROW 4682ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3918{ 4683{
3919 if (lstat (w->path, &w->attr) < 0) 4684 if (lstat (w->path, &w->attr) < 0)
3920 w->attr.st_nlink = 0; 4685 w->attr.st_nlink = 0;
3921 else if (!w->attr.st_nlink) 4686 else if (!w->attr.st_nlink)
3922 w->attr.st_nlink = 1; 4687 w->attr.st_nlink = 1;
3923} 4688}
3924 4689
3925static void noinline 4690ecb_noinline
4691static void
3926stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4692stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3927{ 4693{
3928 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4694 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3929 4695
3930 ev_statdata prev = w->attr; 4696 ev_statdata prev = w->attr;
… …
3961 ev_feed_event (EV_A_ w, EV_STAT); 4727 ev_feed_event (EV_A_ w, EV_STAT);
3962 } 4728 }
3963} 4729}
3964 4730
3965void 4731void
3966ev_stat_start (EV_P_ ev_stat *w) EV_THROW 4732ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3967{ 4733{
3968 if (expect_false (ev_is_active (w))) 4734 if (ecb_expect_false (ev_is_active (w)))
3969 return; 4735 return;
3970 4736
3971 ev_stat_stat (EV_A_ w); 4737 ev_stat_stat (EV_A_ w);
3972 4738
3973 if (w->interval < MIN_STAT_INTERVAL && w->interval) 4739 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
3992 4758
3993 EV_FREQUENT_CHECK; 4759 EV_FREQUENT_CHECK;
3994} 4760}
3995 4761
3996void 4762void
3997ev_stat_stop (EV_P_ ev_stat *w) EV_THROW 4763ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3998{ 4764{
3999 clear_pending (EV_A_ (W)w); 4765 clear_pending (EV_A_ (W)w);
4000 if (expect_false (!ev_is_active (w))) 4766 if (ecb_expect_false (!ev_is_active (w)))
4001 return; 4767 return;
4002 4768
4003 EV_FREQUENT_CHECK; 4769 EV_FREQUENT_CHECK;
4004 4770
4005#if EV_USE_INOTIFY 4771#if EV_USE_INOTIFY
… …
4018} 4784}
4019#endif 4785#endif
4020 4786
4021#if EV_IDLE_ENABLE 4787#if EV_IDLE_ENABLE
4022void 4788void
4023ev_idle_start (EV_P_ ev_idle *w) EV_THROW 4789ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
4024{ 4790{
4025 if (expect_false (ev_is_active (w))) 4791 if (ecb_expect_false (ev_is_active (w)))
4026 return; 4792 return;
4027 4793
4028 pri_adjust (EV_A_ (W)w); 4794 pri_adjust (EV_A_ (W)w);
4029 4795
4030 EV_FREQUENT_CHECK; 4796 EV_FREQUENT_CHECK;
… …
4033 int active = ++idlecnt [ABSPRI (w)]; 4799 int active = ++idlecnt [ABSPRI (w)];
4034 4800
4035 ++idleall; 4801 ++idleall;
4036 ev_start (EV_A_ (W)w, active); 4802 ev_start (EV_A_ (W)w, active);
4037 4803
4038 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4804 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
4039 idles [ABSPRI (w)][active - 1] = w; 4805 idles [ABSPRI (w)][active - 1] = w;
4040 } 4806 }
4041 4807
4042 EV_FREQUENT_CHECK; 4808 EV_FREQUENT_CHECK;
4043} 4809}
4044 4810
4045void 4811void
4046ev_idle_stop (EV_P_ ev_idle *w) EV_THROW 4812ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
4047{ 4813{
4048 clear_pending (EV_A_ (W)w); 4814 clear_pending (EV_A_ (W)w);
4049 if (expect_false (!ev_is_active (w))) 4815 if (ecb_expect_false (!ev_is_active (w)))
4050 return; 4816 return;
4051 4817
4052 EV_FREQUENT_CHECK; 4818 EV_FREQUENT_CHECK;
4053 4819
4054 { 4820 {
… …
4065} 4831}
4066#endif 4832#endif
4067 4833
4068#if EV_PREPARE_ENABLE 4834#if EV_PREPARE_ENABLE
4069void 4835void
4070ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW 4836ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
4071{ 4837{
4072 if (expect_false (ev_is_active (w))) 4838 if (ecb_expect_false (ev_is_active (w)))
4073 return; 4839 return;
4074 4840
4075 EV_FREQUENT_CHECK; 4841 EV_FREQUENT_CHECK;
4076 4842
4077 ev_start (EV_A_ (W)w, ++preparecnt); 4843 ev_start (EV_A_ (W)w, ++preparecnt);
4078 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4844 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
4079 prepares [preparecnt - 1] = w; 4845 prepares [preparecnt - 1] = w;
4080 4846
4081 EV_FREQUENT_CHECK; 4847 EV_FREQUENT_CHECK;
4082} 4848}
4083 4849
4084void 4850void
4085ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW 4851ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
4086{ 4852{
4087 clear_pending (EV_A_ (W)w); 4853 clear_pending (EV_A_ (W)w);
4088 if (expect_false (!ev_is_active (w))) 4854 if (ecb_expect_false (!ev_is_active (w)))
4089 return; 4855 return;
4090 4856
4091 EV_FREQUENT_CHECK; 4857 EV_FREQUENT_CHECK;
4092 4858
4093 { 4859 {
… …
4103} 4869}
4104#endif 4870#endif
4105 4871
4106#if EV_CHECK_ENABLE 4872#if EV_CHECK_ENABLE
4107void 4873void
4108ev_check_start (EV_P_ ev_check *w) EV_THROW 4874ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
4109{ 4875{
4110 if (expect_false (ev_is_active (w))) 4876 if (ecb_expect_false (ev_is_active (w)))
4111 return; 4877 return;
4112 4878
4113 EV_FREQUENT_CHECK; 4879 EV_FREQUENT_CHECK;
4114 4880
4115 ev_start (EV_A_ (W)w, ++checkcnt); 4881 ev_start (EV_A_ (W)w, ++checkcnt);
4116 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4882 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
4117 checks [checkcnt - 1] = w; 4883 checks [checkcnt - 1] = w;
4118 4884
4119 EV_FREQUENT_CHECK; 4885 EV_FREQUENT_CHECK;
4120} 4886}
4121 4887
4122void 4888void
4123ev_check_stop (EV_P_ ev_check *w) EV_THROW 4889ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
4124{ 4890{
4125 clear_pending (EV_A_ (W)w); 4891 clear_pending (EV_A_ (W)w);
4126 if (expect_false (!ev_is_active (w))) 4892 if (ecb_expect_false (!ev_is_active (w)))
4127 return; 4893 return;
4128 4894
4129 EV_FREQUENT_CHECK; 4895 EV_FREQUENT_CHECK;
4130 4896
4131 { 4897 {
… …
4140 EV_FREQUENT_CHECK; 4906 EV_FREQUENT_CHECK;
4141} 4907}
4142#endif 4908#endif
4143 4909
4144#if EV_EMBED_ENABLE 4910#if EV_EMBED_ENABLE
4145void noinline 4911ecb_noinline
4912void
4146ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW 4913ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
4147{ 4914{
4148 ev_run (w->other, EVRUN_NOWAIT); 4915 ev_run (w->other, EVRUN_NOWAIT);
4149} 4916}
4150 4917
4151static void 4918static void
… …
4199 ev_idle_stop (EV_A_ idle); 4966 ev_idle_stop (EV_A_ idle);
4200} 4967}
4201#endif 4968#endif
4202 4969
4203void 4970void
4204ev_embed_start (EV_P_ ev_embed *w) EV_THROW 4971ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
4205{ 4972{
4206 if (expect_false (ev_is_active (w))) 4973 if (ecb_expect_false (ev_is_active (w)))
4207 return; 4974 return;
4208 4975
4209 { 4976 {
4210 EV_P = w->other; 4977 EV_P = w->other;
4211 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4978 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
… …
4230 4997
4231 EV_FREQUENT_CHECK; 4998 EV_FREQUENT_CHECK;
4232} 4999}
4233 5000
4234void 5001void
4235ev_embed_stop (EV_P_ ev_embed *w) EV_THROW 5002ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
4236{ 5003{
4237 clear_pending (EV_A_ (W)w); 5004 clear_pending (EV_A_ (W)w);
4238 if (expect_false (!ev_is_active (w))) 5005 if (ecb_expect_false (!ev_is_active (w)))
4239 return; 5006 return;
4240 5007
4241 EV_FREQUENT_CHECK; 5008 EV_FREQUENT_CHECK;
4242 5009
4243 ev_io_stop (EV_A_ &w->io); 5010 ev_io_stop (EV_A_ &w->io);
… …
4250} 5017}
4251#endif 5018#endif
4252 5019
4253#if EV_FORK_ENABLE 5020#if EV_FORK_ENABLE
4254void 5021void
4255ev_fork_start (EV_P_ ev_fork *w) EV_THROW 5022ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
4256{ 5023{
4257 if (expect_false (ev_is_active (w))) 5024 if (ecb_expect_false (ev_is_active (w)))
4258 return; 5025 return;
4259 5026
4260 EV_FREQUENT_CHECK; 5027 EV_FREQUENT_CHECK;
4261 5028
4262 ev_start (EV_A_ (W)w, ++forkcnt); 5029 ev_start (EV_A_ (W)w, ++forkcnt);
4263 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5030 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
4264 forks [forkcnt - 1] = w; 5031 forks [forkcnt - 1] = w;
4265 5032
4266 EV_FREQUENT_CHECK; 5033 EV_FREQUENT_CHECK;
4267} 5034}
4268 5035
4269void 5036void
4270ev_fork_stop (EV_P_ ev_fork *w) EV_THROW 5037ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
4271{ 5038{
4272 clear_pending (EV_A_ (W)w); 5039 clear_pending (EV_A_ (W)w);
4273 if (expect_false (!ev_is_active (w))) 5040 if (ecb_expect_false (!ev_is_active (w)))
4274 return; 5041 return;
4275 5042
4276 EV_FREQUENT_CHECK; 5043 EV_FREQUENT_CHECK;
4277 5044
4278 { 5045 {
… …
4288} 5055}
4289#endif 5056#endif
4290 5057
4291#if EV_CLEANUP_ENABLE 5058#if EV_CLEANUP_ENABLE
4292void 5059void
4293ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW 5060ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4294{ 5061{
4295 if (expect_false (ev_is_active (w))) 5062 if (ecb_expect_false (ev_is_active (w)))
4296 return; 5063 return;
4297 5064
4298 EV_FREQUENT_CHECK; 5065 EV_FREQUENT_CHECK;
4299 5066
4300 ev_start (EV_A_ (W)w, ++cleanupcnt); 5067 ev_start (EV_A_ (W)w, ++cleanupcnt);
4301 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 5068 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
4302 cleanups [cleanupcnt - 1] = w; 5069 cleanups [cleanupcnt - 1] = w;
4303 5070
4304 /* cleanup watchers should never keep a refcount on the loop */ 5071 /* cleanup watchers should never keep a refcount on the loop */
4305 ev_unref (EV_A); 5072 ev_unref (EV_A);
4306 EV_FREQUENT_CHECK; 5073 EV_FREQUENT_CHECK;
4307} 5074}
4308 5075
4309void 5076void
4310ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW 5077ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4311{ 5078{
4312 clear_pending (EV_A_ (W)w); 5079 clear_pending (EV_A_ (W)w);
4313 if (expect_false (!ev_is_active (w))) 5080 if (ecb_expect_false (!ev_is_active (w)))
4314 return; 5081 return;
4315 5082
4316 EV_FREQUENT_CHECK; 5083 EV_FREQUENT_CHECK;
4317 ev_ref (EV_A); 5084 ev_ref (EV_A);
4318 5085
… …
4329} 5096}
4330#endif 5097#endif
4331 5098
4332#if EV_ASYNC_ENABLE 5099#if EV_ASYNC_ENABLE
4333void 5100void
4334ev_async_start (EV_P_ ev_async *w) EV_THROW 5101ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4335{ 5102{
4336 if (expect_false (ev_is_active (w))) 5103 if (ecb_expect_false (ev_is_active (w)))
4337 return; 5104 return;
4338 5105
4339 w->sent = 0; 5106 w->sent = 0;
4340 5107
4341 evpipe_init (EV_A); 5108 evpipe_init (EV_A);
4342 5109
4343 EV_FREQUENT_CHECK; 5110 EV_FREQUENT_CHECK;
4344 5111
4345 ev_start (EV_A_ (W)w, ++asynccnt); 5112 ev_start (EV_A_ (W)w, ++asynccnt);
4346 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5113 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
4347 asyncs [asynccnt - 1] = w; 5114 asyncs [asynccnt - 1] = w;
4348 5115
4349 EV_FREQUENT_CHECK; 5116 EV_FREQUENT_CHECK;
4350} 5117}
4351 5118
4352void 5119void
4353ev_async_stop (EV_P_ ev_async *w) EV_THROW 5120ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4354{ 5121{
4355 clear_pending (EV_A_ (W)w); 5122 clear_pending (EV_A_ (W)w);
4356 if (expect_false (!ev_is_active (w))) 5123 if (ecb_expect_false (!ev_is_active (w)))
4357 return; 5124 return;
4358 5125
4359 EV_FREQUENT_CHECK; 5126 EV_FREQUENT_CHECK;
4360 5127
4361 { 5128 {
… …
4369 5136
4370 EV_FREQUENT_CHECK; 5137 EV_FREQUENT_CHECK;
4371} 5138}
4372 5139
4373void 5140void
4374ev_async_send (EV_P_ ev_async *w) EV_THROW 5141ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
4375{ 5142{
4376 w->sent = 1; 5143 w->sent = 1;
4377 evpipe_write (EV_A_ &async_pending); 5144 evpipe_write (EV_A_ &async_pending);
4378} 5145}
4379#endif 5146#endif
… …
4416 5183
4417 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5184 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
4418} 5185}
4419 5186
4420void 5187void
4421ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW 5188ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
4422{ 5189{
4423 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5190 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
4424
4425 if (expect_false (!once))
4426 {
4427 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
4428 return;
4429 }
4430 5191
4431 once->cb = cb; 5192 once->cb = cb;
4432 once->arg = arg; 5193 once->arg = arg;
4433 5194
4434 ev_init (&once->io, once_cb_io); 5195 ev_init (&once->io, once_cb_io);
… …
4447} 5208}
4448 5209
4449/*****************************************************************************/ 5210/*****************************************************************************/
4450 5211
4451#if EV_WALK_ENABLE 5212#if EV_WALK_ENABLE
4452void ecb_cold 5213ecb_cold
5214void
4453ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW 5215ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
4454{ 5216{
4455 int i, j; 5217 int i, j;
4456 ev_watcher_list *wl, *wn; 5218 ev_watcher_list *wl, *wn;
4457 5219
4458 if (types & (EV_IO | EV_EMBED)) 5220 if (types & (EV_IO | EV_EMBED))

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