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Comparing libev/ev.c (file contents):
Revision 1.419 by root, Thu Apr 12 04:10:15 2012 UTC vs.
Revision 1.509 by root, Sat Aug 17 05:30:16 2019 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010,2011,2012 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007-2019 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
… …
43# include EV_CONFIG_H 43# include EV_CONFIG_H
44# else 44# else
45# include "config.h" 45# include "config.h"
46# endif 46# endif
47 47
48#if HAVE_FLOOR 48# if HAVE_FLOOR
49# ifndef EV_USE_FLOOR 49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1 50# define EV_USE_FLOOR 1
51# endif
51# endif 52# endif
52#endif
53 53
54# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
55# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
56# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
57# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
… …
113# define EV_USE_EPOLL EV_FEATURE_BACKENDS 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
114# endif 114# endif
115# else 115# else
116# undef EV_USE_EPOLL 116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0 117# define EV_USE_EPOLL 0
118# endif
119
120# if HAVE_LINUX_AIO_ABI_H
121# ifndef EV_USE_LINUXAIO
122# define EV_USE_LINUXAIO EV_FEATURE_BACKENDS
123# endif
124# else
125# undef EV_USE_LINUXAIO
126# define EV_USE_LINUXAIO 0
118# endif 127# endif
119 128
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H 129# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
121# ifndef EV_USE_KQUEUE 130# ifndef EV_USE_KQUEUE
122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS 131# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
… …
162# define EV_USE_EVENTFD 0 171# define EV_USE_EVENTFD 0
163# endif 172# endif
164 173
165#endif 174#endif
166 175
176/* OS X, in its infinite idiocy, actually HARDCODES
177 * a limit of 1024 into their select. Where people have brains,
178 * OS X engineers apparently have a vacuum. Or maybe they were
179 * ordered to have a vacuum, or they do anything for money.
180 * This might help. Or not.
181 * Note that this must be defined early, as other include files
182 * will rely on this define as well.
183 */
184#define _DARWIN_UNLIMITED_SELECT 1
185
167#include <stdlib.h> 186#include <stdlib.h>
168#include <string.h> 187#include <string.h>
169#include <fcntl.h> 188#include <fcntl.h>
170#include <stddef.h> 189#include <stddef.h>
171 190
… …
201# include <sys/wait.h> 220# include <sys/wait.h>
202# include <unistd.h> 221# include <unistd.h>
203#else 222#else
204# include <io.h> 223# include <io.h>
205# define WIN32_LEAN_AND_MEAN 224# define WIN32_LEAN_AND_MEAN
225# include <winsock2.h>
206# include <windows.h> 226# include <windows.h>
207# ifndef EV_SELECT_IS_WINSOCKET 227# ifndef EV_SELECT_IS_WINSOCKET
208# define EV_SELECT_IS_WINSOCKET 1 228# define EV_SELECT_IS_WINSOCKET 1
209# endif 229# endif
210# undef EV_AVOID_STDIO 230# undef EV_AVOID_STDIO
211#endif 231#endif
212
213/* OS X, in its infinite idiocy, actually HARDCODES
214 * a limit of 1024 into their select. Where people have brains,
215 * OS X engineers apparently have a vacuum. Or maybe they were
216 * ordered to have a vacuum, or they do anything for money.
217 * This might help. Or not.
218 */
219#define _DARWIN_UNLIMITED_SELECT 1
220 232
221/* 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 */
222 234
223/* try to deduce the maximum number of signals on this platform */ 235/* try to deduce the maximum number of signals on this platform */
224#if defined EV_NSIG 236#if defined EV_NSIG
… …
240#elif defined SIGARRAYSIZE 252#elif defined SIGARRAYSIZE
241# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 253# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
242#elif defined _sys_nsig 254#elif defined _sys_nsig
243# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 255# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
244#else 256#else
245# error "unable to find value for NSIG, please report" 257# define EV_NSIG (8 * sizeof (sigset_t) + 1)
246/* to make it compile regardless, just remove the above line, */
247/* but consider reporting it, too! :) */
248# define EV_NSIG 65
249#endif 258#endif
250 259
251#ifndef EV_USE_FLOOR 260#ifndef EV_USE_FLOOR
252# define EV_USE_FLOOR 0 261# define EV_USE_FLOOR 0
253#endif 262#endif
254 263
255#ifndef EV_USE_CLOCK_SYSCALL 264#ifndef EV_USE_CLOCK_SYSCALL
256# if __linux && __GLIBC__ >= 2 265# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
257# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 266# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
258# else 267# else
259# 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
260# endif 278# endif
261#endif 279#endif
262 280
263#ifndef EV_USE_MONOTONIC 281#ifndef EV_USE_MONOTONIC
264# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0 282# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
… …
306 324
307#ifndef EV_USE_PORT 325#ifndef EV_USE_PORT
308# define EV_USE_PORT 0 326# define EV_USE_PORT 0
309#endif 327#endif
310 328
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
311#ifndef EV_USE_INOTIFY 345#ifndef EV_USE_INOTIFY
312# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 346# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
313# define EV_USE_INOTIFY EV_FEATURE_OS 347# define EV_USE_INOTIFY EV_FEATURE_OS
314# else 348# else
315# define EV_USE_INOTIFY 0 349# define EV_USE_INOTIFY 0
… …
356 390
357#ifndef EV_HEAP_CACHE_AT 391#ifndef EV_HEAP_CACHE_AT
358# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 392# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
359#endif 393#endif
360 394
395#ifdef __ANDROID__
396/* supposedly, android doesn't typedef fd_mask */
397# undef EV_USE_SELECT
398# define EV_USE_SELECT 0
399/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
400# undef EV_USE_CLOCK_SYSCALL
401# define EV_USE_CLOCK_SYSCALL 0
402#endif
403
404/* aix's poll.h seems to cause lots of trouble */
405#ifdef _AIX
406/* AIX has a completely broken poll.h header */
407# undef EV_USE_POLL
408# define EV_USE_POLL 0
409#endif
410
361/* 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, */
362/* which makes programs even slower. might work on other unices, too. */ 412/* which makes programs even slower. might work on other unices, too. */
363#if EV_USE_CLOCK_SYSCALL 413#if EV_USE_CLOCK_SYSCALL
364# include <syscall.h> 414# include <sys/syscall.h>
365# ifdef SYS_clock_gettime 415# ifdef SYS_clock_gettime
366# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 416# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
367# undef EV_USE_MONOTONIC 417# undef EV_USE_MONOTONIC
368# define EV_USE_MONOTONIC 1 418# define EV_USE_MONOTONIC 1
419# define EV_NEED_SYSCALL 1
369# else 420# else
370# undef EV_USE_CLOCK_SYSCALL 421# undef EV_USE_CLOCK_SYSCALL
371# define EV_USE_CLOCK_SYSCALL 0 422# define EV_USE_CLOCK_SYSCALL 0
372# endif 423# endif
373#endif 424#endif
374 425
375/* 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 */
376 427
377#ifdef _AIX
378/* AIX has a completely broken poll.h header */
379# undef EV_USE_POLL
380# define EV_USE_POLL 0
381#endif
382
383#ifndef CLOCK_MONOTONIC 428#ifndef CLOCK_MONOTONIC
384# undef EV_USE_MONOTONIC 429# undef EV_USE_MONOTONIC
385# define EV_USE_MONOTONIC 0 430# define EV_USE_MONOTONIC 0
386#endif 431#endif
387 432
… …
397 442
398#if !EV_USE_NANOSLEEP 443#if !EV_USE_NANOSLEEP
399/* 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 */
400# if !defined _WIN32 && !defined __hpux 445# if !defined _WIN32 && !defined __hpux
401# 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
402# endif 472# endif
403#endif 473#endif
404 474
405#if EV_USE_INOTIFY 475#if EV_USE_INOTIFY
406# include <sys/statfs.h> 476# include <sys/statfs.h>
… …
408/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 478/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
409# ifndef IN_DONT_FOLLOW 479# ifndef IN_DONT_FOLLOW
410# undef EV_USE_INOTIFY 480# undef EV_USE_INOTIFY
411# define EV_USE_INOTIFY 0 481# define EV_USE_INOTIFY 0
412# endif 482# endif
413#endif
414
415#if EV_SELECT_IS_WINSOCKET
416# include <winsock.h>
417#endif 483#endif
418 484
419#if EV_USE_EVENTFD 485#if EV_USE_EVENTFD
420/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 486/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
421# include <stdint.h> 487# include <stdint.h>
… …
452 uint32_t ssi_signo; 518 uint32_t ssi_signo;
453 char pad[128 - sizeof (uint32_t)]; 519 char pad[128 - sizeof (uint32_t)];
454}; 520};
455#endif 521#endif
456 522
457/**/ 523/*****************************************************************************/
458 524
459#if EV_VERIFY >= 3 525#if EV_VERIFY >= 3
460# define EV_FREQUENT_CHECK ev_verify (EV_A) 526# define EV_FREQUENT_CHECK ev_verify (EV_A)
461#else 527#else
462# define EV_FREQUENT_CHECK do { } while (0) 528# define EV_FREQUENT_CHECK do { } while (0)
… …
467 * This value is good at least till the year 4000. 533 * This value is good at least till the year 4000.
468 */ 534 */
469#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */ 535#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
470/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */ 536/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
471 537
472#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) */
473#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) */
474 540
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
475#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)
476#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
477 558
478/* 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 */
479/* ECB.H BEGIN */ 560/* ECB.H BEGIN */
480/* 561/*
481 * libecb - http://software.schmorp.de/pkg/libecb 562 * libecb - http://software.schmorp.de/pkg/libecb
482 * 563 *
483 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de> 564 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
484 * Copyright (©) 2011 Emanuele Giaquinta 565 * Copyright (©) 2011 Emanuele Giaquinta
485 * All rights reserved. 566 * All rights reserved.
486 * 567 *
487 * 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-
488 * tion, are permitted provided that the following conditions are met: 569 * tion, are permitted provided that the following conditions are met:
… …
502 * 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;
503 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 584 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
504 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- 585 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
505 * 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
506 * 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.
507 */ 599 */
508 600
509#ifndef ECB_H 601#ifndef ECB_H
510#define ECB_H 602#define ECB_H
603
604/* 16 bits major, 16 bits minor */
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;
… …
521 typedef unsigned long long uint64_t; 616 typedef unsigned long long uint64_t;
522 #else /* _MSC_VER || __BORLANDC__ */ 617 #else /* _MSC_VER || __BORLANDC__ */
523 typedef signed __int64 int64_t; 618 typedef signed __int64 int64_t;
524 typedef unsigned __int64 uint64_t; 619 typedef unsigned __int64 uint64_t;
525 #endif 620 #endif
621 #ifdef _WIN64
622 #define ECB_PTRSIZE 8
623 typedef uint64_t uintptr_t;
624 typedef int64_t intptr_t;
625 #else
626 #define ECB_PTRSIZE 4
627 typedef uint32_t uintptr_t;
628 typedef int32_t intptr_t;
629 #endif
526#else 630#else
527 #include <inttypes.h> 631 #include <inttypes.h>
632 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
633 #define ECB_PTRSIZE 8
634 #else
635 #define ECB_PTRSIZE 4
636 #endif
637#endif
638
639#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
640#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
641
642/* work around x32 idiocy by defining proper macros */
643#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
644 #if _ILP32
645 #define ECB_AMD64_X32 1
646 #else
647 #define ECB_AMD64 1
648 #endif
528#endif 649#endif
529 650
530/* many compilers define _GNUC_ to some versions but then only implement 651/* many compilers define _GNUC_ to some versions but then only implement
531 * what their idiot authors think are the "more important" extensions, 652 * what their idiot authors think are the "more important" extensions,
532 * causing enormous grief in return for some better fake benchmark numbers. 653 * causing enormous grief in return for some better fake benchmark numbers.
533 * or so. 654 * or so.
534 * 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
535 * 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.
536 */ 657 */
537#ifndef ECB_GCC_VERSION
538 #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__
539 #define ECB_GCC_VERSION(major,minor) 0 659 #define ECB_GCC_VERSION(major,minor) 0
540 #else 660#else
541 #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)))
542 #endif 662#endif
663
664#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
665
666#if __clang__ && defined __has_builtin
667 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
668#else
669 #define ECB_CLANG_BUILTIN(x) 0
670#endif
671
672#if __clang__ && defined __has_extension
673 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
674#else
675 #define ECB_CLANG_EXTENSION(x) 0
676#endif
677
678#define ECB_CPP (__cplusplus+0)
679#define ECB_CPP11 (__cplusplus >= 201103L)
680#define ECB_CPP14 (__cplusplus >= 201402L)
681#define ECB_CPP17 (__cplusplus >= 201703L)
682
683#if ECB_CPP
684 #define ECB_C 0
685 #define ECB_STDC_VERSION 0
686#else
687 #define ECB_C 1
688 #define ECB_STDC_VERSION __STDC_VERSION__
689#endif
690
691#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
692#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
693#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
694
695#if ECB_CPP
696 #define ECB_EXTERN_C extern "C"
697 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
698 #define ECB_EXTERN_C_END }
699#else
700 #define ECB_EXTERN_C extern
701 #define ECB_EXTERN_C_BEG
702 #define ECB_EXTERN_C_END
543#endif 703#endif
544 704
545/*****************************************************************************/ 705/*****************************************************************************/
546 706
547/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ 707/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
548/* 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 */
549 709
550#if ECB_NO_THREADS 710#if ECB_NO_THREADS
551# define ECB_NO_SMP 1 711 #define ECB_NO_SMP 1
552#endif 712#endif
553 713
554#if ECB_NO_THREADS || ECB_NO_SMP 714#if ECB_NO_SMP
555 #define ECB_MEMORY_FENCE do { } while (0) 715 #define ECB_MEMORY_FENCE do { } while (0)
716#endif
717
718/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
719#if __xlC__ && ECB_CPP
720 #include <builtins.h>
721#endif
722
723#if 1400 <= _MSC_VER
724 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
556#endif 725#endif
557 726
558#ifndef ECB_MEMORY_FENCE 727#ifndef ECB_MEMORY_FENCE
559 #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")
560 #if __i386 || __i386__ 730 #if __i386 || __i386__
561 #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")
562 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */ 732 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
563 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */ 733 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
564 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__ 734 #elif ECB_GCC_AMD64
565 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 735 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
566 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory") 736 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
567 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */ 737 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
568 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 738 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
569 #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 */
570 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \ 747 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
571 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ 748 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
749 || defined __ARM_ARCH_6T2__
572 #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")
573 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \ 751 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
574 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__ 752 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
575 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") 753 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
576 #elif __sparc || __sparc__ 754 #elif __aarch64__
755 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
756 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
577 #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")
578 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") 758 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
579 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") 759 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
580 #elif defined __s390__ || defined __s390x__ 760 #elif defined __s390__ || defined __s390x__
581 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") 761 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
582 #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. */
583 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 765 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
584 #elif defined __alpha__ 766 #elif defined __alpha__
585 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory") 767 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
768 #elif defined __hppa__
769 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
770 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
771 #elif defined __ia64__
772 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
773 #elif defined __m68k__
774 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
775 #elif defined __m88k__
776 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
777 #elif defined __sh__
778 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
586 #endif 779 #endif
587 #endif 780 #endif
588#endif 781#endif
589 782
590#ifndef ECB_MEMORY_FENCE 783#ifndef ECB_MEMORY_FENCE
784 #if ECB_GCC_VERSION(4,7)
785 /* see comment below (stdatomic.h) about the C11 memory model. */
786 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
787 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
788 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
789 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
790
791 #elif ECB_CLANG_EXTENSION(c_atomic)
792 /* see comment below (stdatomic.h) about the C11 memory model. */
793 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
794 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
795 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
796 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
797
591 #if ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ 798 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
592 #define ECB_MEMORY_FENCE __sync_synchronize () 799 #define ECB_MEMORY_FENCE __sync_synchronize ()
593 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */ 800 #elif _MSC_VER >= 1500 /* VC++ 2008 */
594 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */ 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()
595 #elif _MSC_VER >= 1400 /* VC++ 2005 */ 806 #elif _MSC_VER >= 1400 /* VC++ 2005 */
596 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) 807 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
597 #define ECB_MEMORY_FENCE _ReadWriteBarrier () 808 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
598 #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 */
599 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () 810 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
600 #elif defined _WIN32 811 #elif defined _WIN32
601 #include <WinNT.h> 812 #include <WinNT.h>
602 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ 813 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
603 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 814 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
604 #include <mbarrier.h> 815 #include <mbarrier.h>
605 #define ECB_MEMORY_FENCE __machine_rw_barrier () 816 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
606 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier () 817 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
607 #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 ()
608 #elif __xlC__ 820 #elif __xlC__
609 #define ECB_MEMORY_FENCE __sync () 821 #define ECB_MEMORY_FENCE __sync ()
822 #endif
823#endif
824
825#ifndef ECB_MEMORY_FENCE
826 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
827 /* we assume that these memory fences work on all variables/all memory accesses, */
828 /* not just C11 atomics and atomic accesses */
829 #include <stdatomic.h>
830 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
831 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
832 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
610 #endif 833 #endif
611#endif 834#endif
612 835
613#ifndef ECB_MEMORY_FENCE 836#ifndef ECB_MEMORY_FENCE
614 #if !ECB_AVOID_PTHREADS 837 #if !ECB_AVOID_PTHREADS
… …
634 857
635#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE 858#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
636 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 859 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
637#endif 860#endif
638 861
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
639/*****************************************************************************/ 866/*****************************************************************************/
640 867
641#define ECB_C99 (__STDC_VERSION__ >= 199901L) 868#if ECB_CPP
642
643#if __cplusplus
644 #define ecb_inline static inline 869 #define ecb_inline static inline
645#elif ECB_GCC_VERSION(2,5) 870#elif ECB_GCC_VERSION(2,5)
646 #define ecb_inline static __inline__ 871 #define ecb_inline static __inline__
647#elif ECB_C99 872#elif ECB_C99
648 #define ecb_inline static inline 873 #define ecb_inline static inline
… …
662 887
663#define ECB_CONCAT_(a, b) a ## b 888#define ECB_CONCAT_(a, b) a ## b
664#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) 889#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
665#define ECB_STRINGIFY_(a) # a 890#define ECB_STRINGIFY_(a) # a
666#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))
667 893
668#define ecb_function_ ecb_inline 894#define ecb_function_ ecb_inline
669 895
670#if ECB_GCC_VERSION(3,1) 896#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
671 #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)
672 #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)
673 #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)
674 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) 919 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
675#else 920#else
676 #define ecb_attribute(attrlist)
677 #define ecb_is_constant(expr) 0
678 #define ecb_expect(expr,value) (expr)
679 #define ecb_prefetch(addr,rw,locality) 921 #define ecb_prefetch(addr,rw,locality)
680#endif 922#endif
681 923
682/* no emulation for ecb_decltype */ 924/* no emulation for ecb_decltype */
683#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; };
684 #define ecb_decltype(x) __decltype(x) 928 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
685#elif ECB_GCC_VERSION(3,0) 929#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
686 #define ecb_decltype(x) __typeof(x) 930 #define ecb_decltype(x) __typeof__ (x)
687#endif 931#endif
688 932
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
689#define ecb_noinline ecb_attribute ((__noinline__)) 950 #define ecb_noinline ecb_attribute ((__noinline__))
690#define ecb_noreturn ecb_attribute ((__noreturn__)) 951#endif
952
691#define ecb_unused ecb_attribute ((__unused__)) 953#define ecb_unused ecb_attribute ((__unused__))
692#define ecb_const ecb_attribute ((__const__)) 954#define ecb_const ecb_attribute ((__const__))
693#define ecb_pure ecb_attribute ((__pure__)) 955#define ecb_pure ecb_attribute ((__pure__))
956
957#if ECB_C11 || __IBMC_NORETURN
958 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
959 #define ecb_noreturn _Noreturn
960#elif ECB_CPP11
961 #define ecb_noreturn [[noreturn]]
962#elif _MSC_VER >= 1200
963 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
964 #define ecb_noreturn __declspec (noreturn)
965#else
966 #define ecb_noreturn ecb_attribute ((__noreturn__))
967#endif
694 968
695#if ECB_GCC_VERSION(4,3) 969#if ECB_GCC_VERSION(4,3)
696 #define ecb_artificial ecb_attribute ((__artificial__)) 970 #define ecb_artificial ecb_attribute ((__artificial__))
697 #define ecb_hot ecb_attribute ((__hot__)) 971 #define ecb_hot ecb_attribute ((__hot__))
698 #define ecb_cold ecb_attribute ((__cold__)) 972 #define ecb_cold ecb_attribute ((__cold__))
… …
710/* for compatibility to the rest of the world */ 984/* for compatibility to the rest of the world */
711#define ecb_likely(expr) ecb_expect_true (expr) 985#define ecb_likely(expr) ecb_expect_true (expr)
712#define ecb_unlikely(expr) ecb_expect_false (expr) 986#define ecb_unlikely(expr) ecb_expect_false (expr)
713 987
714/* count trailing zero bits and count # of one bits */ 988/* count trailing zero bits and count # of one bits */
715#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))
716 /* 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 */
717 #define ecb_ld32(x) (__builtin_clz (x) ^ 31) 994 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
718 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) 995 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
719 #define ecb_ctz32(x) __builtin_ctz (x) 996 #define ecb_ctz32(x) __builtin_ctz (x)
720 #define ecb_ctz64(x) __builtin_ctzll (x) 997 #define ecb_ctz64(x) __builtin_ctzll (x)
721 #define ecb_popcount32(x) __builtin_popcount (x) 998 #define ecb_popcount32(x) __builtin_popcount (x)
722 /* no popcountll */ 999 /* no popcountll */
723#else 1000#else
724 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; 1001 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
725 ecb_function_ int 1002 ecb_function_ ecb_const int
726 ecb_ctz32 (uint32_t x) 1003 ecb_ctz32 (uint32_t x)
727 { 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
728 int r = 0; 1010 int r = 0;
729 1011
730 x &= ~x + 1; /* this isolates the lowest bit */ 1012 x &= ~x + 1; /* this isolates the lowest bit */
731 1013
732#if ECB_branchless_on_i386 1014#if ECB_branchless_on_i386
… …
742 if (x & 0xff00ff00) r += 8; 1024 if (x & 0xff00ff00) r += 8;
743 if (x & 0xffff0000) r += 16; 1025 if (x & 0xffff0000) r += 16;
744#endif 1026#endif
745 1027
746 return r; 1028 return r;
1029#endif
747 } 1030 }
748 1031
749 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; 1032 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
750 ecb_function_ int 1033 ecb_function_ ecb_const int
751 ecb_ctz64 (uint64_t x) 1034 ecb_ctz64 (uint64_t x)
752 { 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
753 int shift = x & 0xffffffffU ? 0 : 32; 1041 int shift = x & 0xffffffff ? 0 : 32;
754 return ecb_ctz32 (x >> shift) + shift; 1042 return ecb_ctz32 (x >> shift) + shift;
1043#endif
755 } 1044 }
756 1045
757 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; 1046 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
758 ecb_function_ int 1047 ecb_function_ ecb_const int
759 ecb_popcount32 (uint32_t x) 1048 ecb_popcount32 (uint32_t x)
760 { 1049 {
761 x -= (x >> 1) & 0x55555555; 1050 x -= (x >> 1) & 0x55555555;
762 x = ((x >> 2) & 0x33333333) + (x & 0x33333333); 1051 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
763 x = ((x >> 4) + x) & 0x0f0f0f0f; 1052 x = ((x >> 4) + x) & 0x0f0f0f0f;
764 x *= 0x01010101; 1053 x *= 0x01010101;
765 1054
766 return x >> 24; 1055 return x >> 24;
767 } 1056 }
768 1057
769 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; 1058 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
770 ecb_function_ int ecb_ld32 (uint32_t x) 1059 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
771 { 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
772 int r = 0; 1066 int r = 0;
773 1067
774 if (x >> 16) { x >>= 16; r += 16; } 1068 if (x >> 16) { x >>= 16; r += 16; }
775 if (x >> 8) { x >>= 8; r += 8; } 1069 if (x >> 8) { x >>= 8; r += 8; }
776 if (x >> 4) { x >>= 4; r += 4; } 1070 if (x >> 4) { x >>= 4; r += 4; }
777 if (x >> 2) { x >>= 2; r += 2; } 1071 if (x >> 2) { x >>= 2; r += 2; }
778 if (x >> 1) { r += 1; } 1072 if (x >> 1) { r += 1; }
779 1073
780 return r; 1074 return r;
1075#endif
781 } 1076 }
782 1077
783 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; 1078 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
784 ecb_function_ int ecb_ld64 (uint64_t x) 1079 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
785 { 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
786 int r = 0; 1086 int r = 0;
787 1087
788 if (x >> 32) { x >>= 32; r += 32; } 1088 if (x >> 32) { x >>= 32; r += 32; }
789 1089
790 return r + ecb_ld32 (x); 1090 return r + ecb_ld32 (x);
1091#endif
791 } 1092 }
792#endif 1093#endif
793 1094
1095ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1096ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1097ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1098ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1099
794ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const; 1100ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
795ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) 1101ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
796{ 1102{
797 return ( (x * 0x0802U & 0x22110U) 1103 return ( (x * 0x0802U & 0x22110U)
798 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; 1104 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
799} 1105}
800 1106
801ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const; 1107ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
802ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) 1108ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
803{ 1109{
804 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1); 1110 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
805 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2); 1111 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
806 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4); 1112 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
807 x = ( x >> 8 ) | ( x << 8); 1113 x = ( x >> 8 ) | ( x << 8);
808 1114
809 return x; 1115 return x;
810} 1116}
811 1117
812ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const; 1118ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
813ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) 1119ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
814{ 1120{
815 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1); 1121 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
816 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2); 1122 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
817 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4); 1123 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
818 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8); 1124 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
… …
821 return x; 1127 return x;
822} 1128}
823 1129
824/* popcount64 is only available on 64 bit cpus as gcc builtin */ 1130/* popcount64 is only available on 64 bit cpus as gcc builtin */
825/* so for this version we are lazy */ 1131/* so for this version we are lazy */
826ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 1132ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
827ecb_function_ int 1133ecb_function_ ecb_const int
828ecb_popcount64 (uint64_t x) 1134ecb_popcount64 (uint64_t x)
829{ 1135{
830 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); 1136 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
831} 1137}
832 1138
833ecb_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);
834ecb_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);
835ecb_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);
836ecb_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);
837ecb_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);
838ecb_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);
839ecb_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);
840ecb_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);
841 1147
842ecb_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); }
843ecb_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); }
844ecb_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); }
845ecb_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); }
846ecb_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); }
847ecb_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); }
848ecb_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); }
849ecb_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); }
850 1156
851#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
852 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 1161 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1162 #endif
853 #define ecb_bswap32(x) __builtin_bswap32 (x) 1163 #define ecb_bswap32(x) __builtin_bswap32 (x)
854 #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)))
855#else 1170#else
856 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; 1171 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
857 ecb_function_ uint16_t 1172 ecb_function_ ecb_const uint16_t
858 ecb_bswap16 (uint16_t x) 1173 ecb_bswap16 (uint16_t x)
859 { 1174 {
860 return ecb_rotl16 (x, 8); 1175 return ecb_rotl16 (x, 8);
861 } 1176 }
862 1177
863 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; 1178 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
864 ecb_function_ uint32_t 1179 ecb_function_ ecb_const uint32_t
865 ecb_bswap32 (uint32_t x) 1180 ecb_bswap32 (uint32_t x)
866 { 1181 {
867 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); 1182 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
868 } 1183 }
869 1184
870 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; 1185 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
871 ecb_function_ uint64_t 1186 ecb_function_ ecb_const uint64_t
872 ecb_bswap64 (uint64_t x) 1187 ecb_bswap64 (uint64_t x)
873 { 1188 {
874 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); 1189 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
875 } 1190 }
876#endif 1191#endif
877 1192
878#if ECB_GCC_VERSION(4,5) 1193#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
879 #define ecb_unreachable() __builtin_unreachable () 1194 #define ecb_unreachable() __builtin_unreachable ()
880#else 1195#else
881 /* 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 :/ */
882 ecb_inline void ecb_unreachable (void) ecb_noreturn; 1197 ecb_inline ecb_noreturn void ecb_unreachable (void);
883 ecb_inline void ecb_unreachable (void) { } 1198 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
884#endif 1199#endif
885 1200
886/* try to tell the compiler that some condition is definitely true */ 1201/* try to tell the compiler that some condition is definitely true */
887#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) 1202#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
888 1203
889ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const; 1204ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
890ecb_inline unsigned char 1205ecb_inline ecb_const uint32_t
891ecb_byteorder_helper (void) 1206ecb_byteorder_helper (void)
892{ 1207{
893 const uint32_t u = 0x11223344; 1208 /* the union code still generates code under pressure in gcc, */
894 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
895} 1230}
896 1231
897ecb_inline ecb_bool ecb_big_endian (void) ecb_const; 1232ecb_inline ecb_const ecb_bool ecb_big_endian (void);
898ecb_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; }
899ecb_inline ecb_bool ecb_little_endian (void) ecb_const; 1234ecb_inline ecb_const ecb_bool ecb_little_endian (void);
900ecb_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; }
901 1236
902#if ECB_GCC_VERSION(3,0) || ECB_C99 1237#if ECB_GCC_VERSION(3,0) || ECB_C99
903 #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))
904#else 1239#else
905 #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)))
906#endif 1241#endif
907 1242
908#if __cplusplus 1243#if ECB_CPP
909 template<typename T> 1244 template<typename T>
910 static inline T ecb_div_rd (T val, T div) 1245 static inline T ecb_div_rd (T val, T div)
911 { 1246 {
912 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; 1247 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
913 } 1248 }
… …
930 } 1265 }
931#else 1266#else
932 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1267 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
933#endif 1268#endif
934 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
935#endif 1575#endif
936 1576
937/* ECB.H END */ 1577/* ECB.H END */
938 1578
939#if ECB_MEMORY_FENCE_NEEDS_PTHREADS 1579#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
940/* 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
941 * 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
942 * 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
943 * libev, in which cases the memory fences become nops. 1583 * libev, in which cases the memory fences become nops.
944 * alternatively, you can remove this #error and link against libpthread, 1584 * alternatively, you can remove this #error and link against libpthread,
945 * which will then provide the memory fences. 1585 * which will then provide the memory fences.
946 */ 1586 */
947# error "memory fences not defined for your architecture, please report" 1587# error "memory fences not defined for your architecture, please report"
… …
951# define ECB_MEMORY_FENCE do { } while (0) 1591# define ECB_MEMORY_FENCE do { } while (0)
952# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 1592# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
953# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 1593# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
954#endif 1594#endif
955 1595
956#define expect_false(cond) ecb_expect_false (cond)
957#define expect_true(cond) ecb_expect_true (cond)
958#define noinline ecb_noinline
959
960#define inline_size ecb_inline 1596#define inline_size ecb_inline
961 1597
962#if EV_FEATURE_CODE 1598#if EV_FEATURE_CODE
963# define inline_speed ecb_inline 1599# define inline_speed ecb_inline
964#else 1600#else
965# define inline_speed static noinline 1601# define inline_speed ecb_noinline static
966#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/*****************************************************************************/
967 1669
968#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1670#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
969 1671
970#if EV_MINPRI == EV_MAXPRI 1672#if EV_MINPRI == EV_MAXPRI
971# define ABSPRI(w) (((W)w), 0) 1673# define ABSPRI(w) (((W)w), 0)
972#else 1674#else
973# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1675# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
974#endif 1676#endif
975 1677
976#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1678#define EMPTY /* required for microsofts broken pseudo-c compiler */
977#define EMPTY2(a,b) /* used to suppress some warnings */
978 1679
979typedef ev_watcher *W; 1680typedef ev_watcher *W;
980typedef ev_watcher_list *WL; 1681typedef ev_watcher_list *WL;
981typedef ev_watcher_time *WT; 1682typedef ev_watcher_time *WT;
982 1683
… …
1007# include "ev_win32.c" 1708# include "ev_win32.c"
1008#endif 1709#endif
1009 1710
1010/*****************************************************************************/ 1711/*****************************************************************************/
1011 1712
1713#if EV_USE_LINUXAIO
1714# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1715#endif
1716
1012/* define a suitable floor function (only used by periodics atm) */ 1717/* define a suitable floor function (only used by periodics atm) */
1013 1718
1014#if EV_USE_FLOOR 1719#if EV_USE_FLOOR
1015# include <math.h> 1720# include <math.h>
1016# define ev_floor(v) floor (v) 1721# define ev_floor(v) floor (v)
1017#else 1722#else
1018 1723
1019#include <float.h> 1724#include <float.h>
1020 1725
1021/* 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
1022static ev_tstamp noinline 1728static ev_tstamp
1023ev_floor (ev_tstamp v) 1729ev_floor (ev_tstamp v)
1024{ 1730{
1025 /* the choice of shift factor is not terribly important */ 1731 /* the choice of shift factor is not terribly important */
1026#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1732#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1027 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1733 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1028#else 1734#else
1029 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; 1735 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1030#endif 1736#endif
1031 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
1032 /* argument too large for an unsigned long? */ 1746 /* argument too large for an unsigned long? then reduce it */
1033 if (expect_false (v >= shift)) 1747 if (ecb_expect_false (v >= shift))
1034 { 1748 {
1035 ev_tstamp f; 1749 ev_tstamp f;
1036 1750
1037 if (v == v - 1.) 1751 if (v == v - 1.)
1038 return v; /* very large number */ 1752 return v; /* very large numbers are assumed to be integer */
1039 1753
1040 f = shift * ev_floor (v * (1. / shift)); 1754 f = shift * ev_floor (v * (1. / shift));
1041 return f + ev_floor (v - f); 1755 return f + ev_floor (v - f);
1042 } 1756 }
1043 1757
1044 /* special treatment for negative args? */
1045 if (expect_false (v < 0.))
1046 {
1047 ev_tstamp f = -ev_floor (-v);
1048
1049 return f - (f == v ? 0 : 1);
1050 }
1051
1052 /* fits into an unsigned long */ 1758 /* fits into an unsigned long */
1053 return (unsigned long)v; 1759 return (unsigned long)v;
1054} 1760}
1055 1761
1056#endif 1762#endif
… …
1059 1765
1060#ifdef __linux 1766#ifdef __linux
1061# include <sys/utsname.h> 1767# include <sys/utsname.h>
1062#endif 1768#endif
1063 1769
1064static unsigned int noinline ecb_cold 1770ecb_noinline ecb_cold
1771static unsigned int
1065ev_linux_version (void) 1772ev_linux_version (void)
1066{ 1773{
1067#ifdef __linux 1774#ifdef __linux
1068 unsigned int v = 0; 1775 unsigned int v = 0;
1069 struct utsname buf; 1776 struct utsname buf;
… …
1098} 1805}
1099 1806
1100/*****************************************************************************/ 1807/*****************************************************************************/
1101 1808
1102#if EV_AVOID_STDIO 1809#if EV_AVOID_STDIO
1103static void noinline ecb_cold 1810ecb_noinline ecb_cold
1811static void
1104ev_printerr (const char *msg) 1812ev_printerr (const char *msg)
1105{ 1813{
1106 write (STDERR_FILENO, msg, strlen (msg)); 1814 write (STDERR_FILENO, msg, strlen (msg));
1107} 1815}
1108#endif 1816#endif
1109 1817
1110static void (*syserr_cb)(const char *msg); 1818static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
1111 1819
1112void ecb_cold 1820ecb_cold
1821void
1113ev_set_syserr_cb (void (*cb)(const char *msg)) 1822ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
1114{ 1823{
1115 syserr_cb = cb; 1824 syserr_cb = cb;
1116} 1825}
1117 1826
1118static void noinline ecb_cold 1827ecb_noinline ecb_cold
1828static void
1119ev_syserr (const char *msg) 1829ev_syserr (const char *msg)
1120{ 1830{
1121 if (!msg) 1831 if (!msg)
1122 msg = "(libev) system error"; 1832 msg = "(libev) system error";
1123 1833
… …
1136 abort (); 1846 abort ();
1137 } 1847 }
1138} 1848}
1139 1849
1140static void * 1850static void *
1141ev_realloc_emul (void *ptr, long size) 1851ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
1142{ 1852{
1143#if __GLIBC__
1144 return realloc (ptr, size);
1145#else
1146 /* some systems, notably openbsd and darwin, fail to properly 1853 /* some systems, notably openbsd and darwin, fail to properly
1147 * 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
1148 * 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.
1149 */ 1858 */
1150 1859
1151 if (size) 1860 if (size)
1152 return realloc (ptr, size); 1861 return realloc (ptr, size);
1153 1862
1154 free (ptr); 1863 free (ptr);
1155 return 0; 1864 return 0;
1156#endif
1157} 1865}
1158 1866
1159static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1867static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
1160 1868
1161void ecb_cold 1869ecb_cold
1870void
1162ev_set_allocator (void *(*cb)(void *ptr, long size)) 1871ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
1163{ 1872{
1164 alloc = cb; 1873 alloc = cb;
1165} 1874}
1166 1875
1167inline_speed void * 1876inline_speed void *
… …
1194typedef struct 1903typedef struct
1195{ 1904{
1196 WL head; 1905 WL head;
1197 unsigned char events; /* the events watched for */ 1906 unsigned char events; /* the events watched for */
1198 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) */
1199 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 */
1200 unsigned char unused; 1909 unsigned char eflags; /* flags field for use by backends */
1201#if EV_USE_EPOLL 1910#if EV_USE_EPOLL
1202 unsigned int egen; /* generation counter to counter epoll bugs */ 1911 unsigned int egen; /* generation counter to counter epoll bugs */
1203#endif 1912#endif
1204#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 1913#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1205 SOCKET handle; 1914 SOCKET handle;
… …
1259 static struct ev_loop default_loop_struct; 1968 static struct ev_loop default_loop_struct;
1260 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 */
1261 1970
1262#else 1971#else
1263 1972
1264 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 */
1265 #define VAR(name,decl) static decl; 1974 #define VAR(name,decl) static decl;
1266 #include "ev_vars.h" 1975 #include "ev_vars.h"
1267 #undef VAR 1976 #undef VAR
1268 1977
1269 static int ev_default_loop_ptr; 1978 static int ev_default_loop_ptr;
1270 1979
1271#endif 1980#endif
1272 1981
1273#if EV_FEATURE_API 1982#if EV_FEATURE_API
1274# 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)
1275# 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)
1276# define EV_INVOKE_PENDING invoke_cb (EV_A) 1985# define EV_INVOKE_PENDING invoke_cb (EV_A)
1277#else 1986#else
1278# define EV_RELEASE_CB (void)0 1987# define EV_RELEASE_CB (void)0
1279# define EV_ACQUIRE_CB (void)0 1988# define EV_ACQUIRE_CB (void)0
1280# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1989# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
… …
1284 1993
1285/*****************************************************************************/ 1994/*****************************************************************************/
1286 1995
1287#ifndef EV_HAVE_EV_TIME 1996#ifndef EV_HAVE_EV_TIME
1288ev_tstamp 1997ev_tstamp
1289ev_time (void) 1998ev_time (void) EV_NOEXCEPT
1290{ 1999{
1291#if EV_USE_REALTIME 2000#if EV_USE_REALTIME
1292 if (expect_true (have_realtime)) 2001 if (ecb_expect_true (have_realtime))
1293 { 2002 {
1294 struct timespec ts; 2003 struct timespec ts;
1295 clock_gettime (CLOCK_REALTIME, &ts); 2004 clock_gettime (CLOCK_REALTIME, &ts);
1296 return ts.tv_sec + ts.tv_nsec * 1e-9; 2005 return EV_TS_GET (ts);
1297 } 2006 }
1298#endif 2007#endif
1299 2008
1300 struct timeval tv; 2009 struct timeval tv;
1301 gettimeofday (&tv, 0); 2010 gettimeofday (&tv, 0);
1302 return tv.tv_sec + tv.tv_usec * 1e-6; 2011 return EV_TV_GET (tv);
1303} 2012}
1304#endif 2013#endif
1305 2014
1306inline_size ev_tstamp 2015inline_size ev_tstamp
1307get_clock (void) 2016get_clock (void)
1308{ 2017{
1309#if EV_USE_MONOTONIC 2018#if EV_USE_MONOTONIC
1310 if (expect_true (have_monotonic)) 2019 if (ecb_expect_true (have_monotonic))
1311 { 2020 {
1312 struct timespec ts; 2021 struct timespec ts;
1313 clock_gettime (CLOCK_MONOTONIC, &ts); 2022 clock_gettime (CLOCK_MONOTONIC, &ts);
1314 return ts.tv_sec + ts.tv_nsec * 1e-9; 2023 return EV_TS_GET (ts);
1315 } 2024 }
1316#endif 2025#endif
1317 2026
1318 return ev_time (); 2027 return ev_time ();
1319} 2028}
1320 2029
1321#if EV_MULTIPLICITY 2030#if EV_MULTIPLICITY
1322ev_tstamp 2031ev_tstamp
1323ev_now (EV_P) 2032ev_now (EV_P) EV_NOEXCEPT
1324{ 2033{
1325 return ev_rt_now; 2034 return ev_rt_now;
1326} 2035}
1327#endif 2036#endif
1328 2037
1329void 2038void
1330ev_sleep (ev_tstamp delay) 2039ev_sleep (ev_tstamp delay) EV_NOEXCEPT
1331{ 2040{
1332 if (delay > 0.) 2041 if (delay > EV_TS_CONST (0.))
1333 { 2042 {
1334#if EV_USE_NANOSLEEP 2043#if EV_USE_NANOSLEEP
1335 struct timespec ts; 2044 struct timespec ts;
1336 2045
1337 EV_TS_SET (ts, delay); 2046 EV_TS_SET (ts, delay);
1338 nanosleep (&ts, 0); 2047 nanosleep (&ts, 0);
1339#elif defined _WIN32 2048#elif defined _WIN32
2049 /* maybe this should round up, as ms is very low resolution */
2050 /* compared to select (µs) or nanosleep (ns) */
1340 Sleep ((unsigned long)(delay * 1e3)); 2051 Sleep ((unsigned long)(EV_TS_TO_MSEC (delay)));
1341#else 2052#else
1342 struct timeval tv; 2053 struct timeval tv;
1343 2054
1344 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 2055 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
1345 /* something not guaranteed by newer posix versions, but guaranteed */ 2056 /* something not guaranteed by newer posix versions, but guaranteed */
… …
1375 } 2086 }
1376 2087
1377 return ncur; 2088 return ncur;
1378} 2089}
1379 2090
1380static void * noinline ecb_cold 2091ecb_noinline ecb_cold
2092static void *
1381array_realloc (int elem, void *base, int *cur, int cnt) 2093array_realloc (int elem, void *base, int *cur, int cnt)
1382{ 2094{
1383 *cur = array_nextsize (elem, *cur, cnt); 2095 *cur = array_nextsize (elem, *cur, cnt);
1384 return ev_realloc (base, elem * *cur); 2096 return ev_realloc (base, elem * *cur);
1385} 2097}
1386 2098
2099#define array_needsize_noinit(base,offset,count)
2100
1387#define array_init_zero(base,count) \ 2101#define array_needsize_zerofill(base,offset,count) \
1388 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2102 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
1389 2103
1390#define array_needsize(type,base,cur,cnt,init) \ 2104#define array_needsize(type,base,cur,cnt,init) \
1391 if (expect_false ((cnt) > (cur))) \ 2105 if (ecb_expect_false ((cnt) > (cur))) \
1392 { \ 2106 { \
1393 int ecb_unused ocur_ = (cur); \ 2107 ecb_unused int ocur_ = (cur); \
1394 (base) = (type *)array_realloc \ 2108 (base) = (type *)array_realloc \
1395 (sizeof (type), (base), &(cur), (cnt)); \ 2109 (sizeof (type), (base), &(cur), (cnt)); \
1396 init ((base) + (ocur_), (cur) - ocur_); \ 2110 init ((base), ocur_, ((cur) - ocur_)); \
1397 } 2111 }
1398 2112
1399#if 0 2113#if 0
1400#define array_slim(type,stem) \ 2114#define array_slim(type,stem) \
1401 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2115 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
1410 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2124 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
1411 2125
1412/*****************************************************************************/ 2126/*****************************************************************************/
1413 2127
1414/* dummy callback for pending events */ 2128/* dummy callback for pending events */
1415static void noinline 2129ecb_noinline
2130static void
1416pendingcb (EV_P_ ev_prepare *w, int revents) 2131pendingcb (EV_P_ ev_prepare *w, int revents)
1417{ 2132{
1418} 2133}
1419 2134
1420void noinline 2135ecb_noinline
2136void
1421ev_feed_event (EV_P_ void *w, int revents) 2137ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
1422{ 2138{
1423 W w_ = (W)w; 2139 W w_ = (W)w;
1424 int pri = ABSPRI (w_); 2140 int pri = ABSPRI (w_);
1425 2141
1426 if (expect_false (w_->pending)) 2142 if (ecb_expect_false (w_->pending))
1427 pendings [pri][w_->pending - 1].events |= revents; 2143 pendings [pri][w_->pending - 1].events |= revents;
1428 else 2144 else
1429 { 2145 {
1430 w_->pending = ++pendingcnt [pri]; 2146 w_->pending = ++pendingcnt [pri];
1431 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2147 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
1432 pendings [pri][w_->pending - 1].w = w_; 2148 pendings [pri][w_->pending - 1].w = w_;
1433 pendings [pri][w_->pending - 1].events = revents; 2149 pendings [pri][w_->pending - 1].events = revents;
1434 } 2150 }
2151
2152 pendingpri = NUMPRI - 1;
1435} 2153}
1436 2154
1437inline_speed void 2155inline_speed void
1438feed_reverse (EV_P_ W w) 2156feed_reverse (EV_P_ W w)
1439{ 2157{
1440 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2158 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
1441 rfeeds [rfeedcnt++] = w; 2159 rfeeds [rfeedcnt++] = w;
1442} 2160}
1443 2161
1444inline_size void 2162inline_size void
1445feed_reverse_done (EV_P_ int revents) 2163feed_reverse_done (EV_P_ int revents)
… …
1480inline_speed void 2198inline_speed void
1481fd_event (EV_P_ int fd, int revents) 2199fd_event (EV_P_ int fd, int revents)
1482{ 2200{
1483 ANFD *anfd = anfds + fd; 2201 ANFD *anfd = anfds + fd;
1484 2202
1485 if (expect_true (!anfd->reify)) 2203 if (ecb_expect_true (!anfd->reify))
1486 fd_event_nocheck (EV_A_ fd, revents); 2204 fd_event_nocheck (EV_A_ fd, revents);
1487} 2205}
1488 2206
1489void 2207void
1490ev_feed_fd_event (EV_P_ int fd, int revents) 2208ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
1491{ 2209{
1492 if (fd >= 0 && fd < anfdmax) 2210 if (fd >= 0 && fd < anfdmax)
1493 fd_event_nocheck (EV_A_ fd, revents); 2211 fd_event_nocheck (EV_A_ fd, revents);
1494} 2212}
1495 2213
… …
1532 ev_io *w; 2250 ev_io *w;
1533 2251
1534 unsigned char o_events = anfd->events; 2252 unsigned char o_events = anfd->events;
1535 unsigned char o_reify = anfd->reify; 2253 unsigned char o_reify = anfd->reify;
1536 2254
1537 anfd->reify = 0; 2255 anfd->reify = 0;
1538 2256
1539 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 2257 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
1540 { 2258 {
1541 anfd->events = 0; 2259 anfd->events = 0;
1542 2260
1543 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2261 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1544 anfd->events |= (unsigned char)w->events; 2262 anfd->events |= (unsigned char)w->events;
… …
1553 2271
1554 fdchangecnt = 0; 2272 fdchangecnt = 0;
1555} 2273}
1556 2274
1557/* something about the given fd changed */ 2275/* something about the given fd changed */
1558inline_size void 2276inline_size
2277void
1559fd_change (EV_P_ int fd, int flags) 2278fd_change (EV_P_ int fd, int flags)
1560{ 2279{
1561 unsigned char reify = anfds [fd].reify; 2280 unsigned char reify = anfds [fd].reify;
1562 anfds [fd].reify |= flags; 2281 anfds [fd].reify |= flags;
1563 2282
1564 if (expect_true (!reify)) 2283 if (ecb_expect_true (!reify))
1565 { 2284 {
1566 ++fdchangecnt; 2285 ++fdchangecnt;
1567 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2286 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
1568 fdchanges [fdchangecnt - 1] = fd; 2287 fdchanges [fdchangecnt - 1] = fd;
1569 } 2288 }
1570} 2289}
1571 2290
1572/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2291/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1573inline_speed void ecb_cold 2292inline_speed ecb_cold void
1574fd_kill (EV_P_ int fd) 2293fd_kill (EV_P_ int fd)
1575{ 2294{
1576 ev_io *w; 2295 ev_io *w;
1577 2296
1578 while ((w = (ev_io *)anfds [fd].head)) 2297 while ((w = (ev_io *)anfds [fd].head))
… …
1581 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2300 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1582 } 2301 }
1583} 2302}
1584 2303
1585/* check whether the given fd is actually valid, for error recovery */ 2304/* check whether the given fd is actually valid, for error recovery */
1586inline_size int ecb_cold 2305inline_size ecb_cold int
1587fd_valid (int fd) 2306fd_valid (int fd)
1588{ 2307{
1589#ifdef _WIN32 2308#ifdef _WIN32
1590 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2309 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1591#else 2310#else
1592 return fcntl (fd, F_GETFD) != -1; 2311 return fcntl (fd, F_GETFD) != -1;
1593#endif 2312#endif
1594} 2313}
1595 2314
1596/* called on EBADF to verify fds */ 2315/* called on EBADF to verify fds */
1597static void noinline ecb_cold 2316ecb_noinline ecb_cold
2317static void
1598fd_ebadf (EV_P) 2318fd_ebadf (EV_P)
1599{ 2319{
1600 int fd; 2320 int fd;
1601 2321
1602 for (fd = 0; fd < anfdmax; ++fd) 2322 for (fd = 0; fd < anfdmax; ++fd)
… …
1604 if (!fd_valid (fd) && errno == EBADF) 2324 if (!fd_valid (fd) && errno == EBADF)
1605 fd_kill (EV_A_ fd); 2325 fd_kill (EV_A_ fd);
1606} 2326}
1607 2327
1608/* called on ENOMEM in select/poll to kill some fds and retry */ 2328/* called on ENOMEM in select/poll to kill some fds and retry */
1609static void noinline ecb_cold 2329ecb_noinline ecb_cold
2330static void
1610fd_enomem (EV_P) 2331fd_enomem (EV_P)
1611{ 2332{
1612 int fd; 2333 int fd;
1613 2334
1614 for (fd = anfdmax; fd--; ) 2335 for (fd = anfdmax; fd--; )
… …
1618 break; 2339 break;
1619 } 2340 }
1620} 2341}
1621 2342
1622/* usually called after fork if backend needs to re-arm all fds from scratch */ 2343/* usually called after fork if backend needs to re-arm all fds from scratch */
1623static void noinline 2344ecb_noinline
2345static void
1624fd_rearm_all (EV_P) 2346fd_rearm_all (EV_P)
1625{ 2347{
1626 int fd; 2348 int fd;
1627 2349
1628 for (fd = 0; fd < anfdmax; ++fd) 2350 for (fd = 0; fd < anfdmax; ++fd)
… …
1681 ev_tstamp minat; 2403 ev_tstamp minat;
1682 ANHE *minpos; 2404 ANHE *minpos;
1683 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2405 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1684 2406
1685 /* find minimum child */ 2407 /* find minimum child */
1686 if (expect_true (pos + DHEAP - 1 < E)) 2408 if (ecb_expect_true (pos + DHEAP - 1 < E))
1687 { 2409 {
1688 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2410 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1689 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2411 if ( minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1690 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2412 if ( minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1691 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2413 if ( minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1692 } 2414 }
1693 else if (pos < E) 2415 else if (pos < E)
1694 { 2416 {
1695 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2417 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1696 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2418 if (pos + 1 < E && minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1697 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2419 if (pos + 2 < E && minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1698 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2420 if (pos + 3 < E && minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1699 } 2421 }
1700 else 2422 else
1701 break; 2423 break;
1702 2424
1703 if (ANHE_at (he) <= minat) 2425 if (ANHE_at (he) <= minat)
… …
1711 2433
1712 heap [k] = he; 2434 heap [k] = he;
1713 ev_active (ANHE_w (he)) = k; 2435 ev_active (ANHE_w (he)) = k;
1714} 2436}
1715 2437
1716#else /* 4HEAP */ 2438#else /* not 4HEAP */
1717 2439
1718#define HEAP0 1 2440#define HEAP0 1
1719#define HPARENT(k) ((k) >> 1) 2441#define HPARENT(k) ((k) >> 1)
1720#define UPHEAP_DONE(p,k) (!(p)) 2442#define UPHEAP_DONE(p,k) (!(p))
1721 2443
… …
1809 2531
1810/*****************************************************************************/ 2532/*****************************************************************************/
1811 2533
1812#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2534#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1813 2535
1814static void noinline ecb_cold 2536ecb_noinline ecb_cold
2537static void
1815evpipe_init (EV_P) 2538evpipe_init (EV_P)
1816{ 2539{
1817 if (!ev_is_active (&pipe_w)) 2540 if (!ev_is_active (&pipe_w))
1818 { 2541 {
2542 int fds [2];
2543
1819# if EV_USE_EVENTFD 2544# if EV_USE_EVENTFD
2545 fds [0] = -1;
1820 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2546 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1821 if (evfd < 0 && errno == EINVAL) 2547 if (fds [1] < 0 && errno == EINVAL)
1822 evfd = eventfd (0, 0); 2548 fds [1] = eventfd (0, 0);
1823 2549
1824 if (evfd >= 0) 2550 if (fds [1] < 0)
2551# endif
1825 { 2552 {
2553 while (pipe (fds))
2554 ev_syserr ("(libev) error creating signal/async pipe");
2555
2556 fd_intern (fds [0]);
2557 }
2558
1826 evpipe [0] = -1; 2559 evpipe [0] = fds [0];
1827 fd_intern (evfd); /* doing it twice doesn't hurt */ 2560
1828 ev_io_set (&pipe_w, evfd, EV_READ); 2561 if (evpipe [1] < 0)
2562 evpipe [1] = fds [1]; /* first call, set write fd */
2563 else
2564 {
2565 /* on subsequent calls, do not change evpipe [1] */
2566 /* so that evpipe_write can always rely on its value. */
2567 /* this branch does not do anything sensible on windows, */
2568 /* so must not be executed on windows */
2569
2570 dup2 (fds [1], evpipe [1]);
2571 close (fds [1]);
2572 }
2573
2574 fd_intern (evpipe [1]);
2575
2576 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2577 ev_io_start (EV_A_ &pipe_w);
2578 ev_unref (EV_A); /* watcher should not keep loop alive */
2579 }
2580}
2581
2582inline_speed void
2583evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2584{
2585 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2586
2587 if (ecb_expect_true (*flag))
2588 return;
2589
2590 *flag = 1;
2591 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2592
2593 pipe_write_skipped = 1;
2594
2595 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2596
2597 if (pipe_write_wanted)
2598 {
2599 int old_errno;
2600
2601 pipe_write_skipped = 0;
2602 ECB_MEMORY_FENCE_RELEASE;
2603
2604 old_errno = errno; /* save errno because write will clobber it */
2605
2606#if EV_USE_EVENTFD
2607 if (evpipe [0] < 0)
2608 {
2609 uint64_t counter = 1;
2610 write (evpipe [1], &counter, sizeof (uint64_t));
1829 } 2611 }
1830 else 2612 else
1831# endif 2613#endif
1832 { 2614 {
1833 while (pipe (evpipe)) 2615#ifdef _WIN32
1834 ev_syserr ("(libev) error creating signal/async pipe"); 2616 WSABUF buf;
1835 2617 DWORD sent;
1836 fd_intern (evpipe [0]); 2618 buf.buf = (char *)&buf;
1837 fd_intern (evpipe [1]); 2619 buf.len = 1;
1838 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2620 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1839 } 2621#else
1840
1841 ev_io_start (EV_A_ &pipe_w);
1842 ev_unref (EV_A); /* watcher should not keep loop alive */
1843 }
1844}
1845
1846inline_speed void
1847evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1848{
1849 if (expect_true (*flag))
1850 return;
1851
1852 *flag = 1;
1853
1854 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1855
1856 pipe_write_skipped = 1;
1857
1858 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1859
1860 if (pipe_write_wanted)
1861 {
1862 int old_errno;
1863
1864 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1865
1866 old_errno = errno; /* save errno because write will clobber it */
1867
1868#if EV_USE_EVENTFD
1869 if (evfd >= 0)
1870 {
1871 uint64_t counter = 1;
1872 write (evfd, &counter, sizeof (uint64_t));
1873 }
1874 else
1875#endif
1876 {
1877 /* win32 people keep sending patches that change this write() to send() */
1878 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1879 /* so when you think this write should be a send instead, please find out */
1880 /* where your send() is from - it's definitely not the microsoft send, and */
1881 /* tell me. thank you. */
1882 /* it might be that your problem is that your environment needs EV_USE_WSASOCKET */
1883 /* check the ev documentation on how to use this flag */
1884 write (evpipe [1], &(evpipe [1]), 1); 2622 write (evpipe [1], &(evpipe [1]), 1);
2623#endif
1885 } 2624 }
1886 2625
1887 errno = old_errno; 2626 errno = old_errno;
1888 } 2627 }
1889} 2628}
… …
1896 int i; 2635 int i;
1897 2636
1898 if (revents & EV_READ) 2637 if (revents & EV_READ)
1899 { 2638 {
1900#if EV_USE_EVENTFD 2639#if EV_USE_EVENTFD
1901 if (evfd >= 0) 2640 if (evpipe [0] < 0)
1902 { 2641 {
1903 uint64_t counter; 2642 uint64_t counter;
1904 read (evfd, &counter, sizeof (uint64_t)); 2643 read (evpipe [1], &counter, sizeof (uint64_t));
1905 } 2644 }
1906 else 2645 else
1907#endif 2646#endif
1908 { 2647 {
1909 char dummy; 2648 char dummy[4];
1910 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2649#ifdef _WIN32
2650 WSABUF buf;
2651 DWORD recvd;
2652 DWORD flags = 0;
2653 buf.buf = dummy;
2654 buf.len = sizeof (dummy);
2655 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2656#else
1911 read (evpipe [0], &dummy, 1); 2657 read (evpipe [0], &dummy, sizeof (dummy));
2658#endif
1912 } 2659 }
1913 } 2660 }
1914 2661
1915 pipe_write_skipped = 0; 2662 pipe_write_skipped = 0;
2663
2664 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1916 2665
1917#if EV_SIGNAL_ENABLE 2666#if EV_SIGNAL_ENABLE
1918 if (sig_pending) 2667 if (sig_pending)
1919 { 2668 {
1920 sig_pending = 0; 2669 sig_pending = 0;
1921 2670
2671 ECB_MEMORY_FENCE;
2672
1922 for (i = EV_NSIG - 1; i--; ) 2673 for (i = EV_NSIG - 1; i--; )
1923 if (expect_false (signals [i].pending)) 2674 if (ecb_expect_false (signals [i].pending))
1924 ev_feed_signal_event (EV_A_ i + 1); 2675 ev_feed_signal_event (EV_A_ i + 1);
1925 } 2676 }
1926#endif 2677#endif
1927 2678
1928#if EV_ASYNC_ENABLE 2679#if EV_ASYNC_ENABLE
1929 if (async_pending) 2680 if (async_pending)
1930 { 2681 {
1931 async_pending = 0; 2682 async_pending = 0;
2683
2684 ECB_MEMORY_FENCE;
1932 2685
1933 for (i = asynccnt; i--; ) 2686 for (i = asynccnt; i--; )
1934 if (asyncs [i]->sent) 2687 if (asyncs [i]->sent)
1935 { 2688 {
1936 asyncs [i]->sent = 0; 2689 asyncs [i]->sent = 0;
2690 ECB_MEMORY_FENCE_RELEASE;
1937 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2691 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1938 } 2692 }
1939 } 2693 }
1940#endif 2694#endif
1941} 2695}
1942 2696
1943/*****************************************************************************/ 2697/*****************************************************************************/
1944 2698
1945void 2699void
1946ev_feed_signal (int signum) 2700ev_feed_signal (int signum) EV_NOEXCEPT
1947{ 2701{
1948#if EV_MULTIPLICITY 2702#if EV_MULTIPLICITY
2703 EV_P;
2704 ECB_MEMORY_FENCE_ACQUIRE;
1949 EV_P = signals [signum - 1].loop; 2705 EV_A = signals [signum - 1].loop;
1950 2706
1951 if (!EV_A) 2707 if (!EV_A)
1952 return; 2708 return;
1953#endif 2709#endif
1954 2710
1955 if (!ev_active (&pipe_w))
1956 return;
1957
1958 signals [signum - 1].pending = 1; 2711 signals [signum - 1].pending = 1;
1959 evpipe_write (EV_A_ &sig_pending); 2712 evpipe_write (EV_A_ &sig_pending);
1960} 2713}
1961 2714
1962static void 2715static void
… …
1967#endif 2720#endif
1968 2721
1969 ev_feed_signal (signum); 2722 ev_feed_signal (signum);
1970} 2723}
1971 2724
1972void noinline 2725ecb_noinline
2726void
1973ev_feed_signal_event (EV_P_ int signum) 2727ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1974{ 2728{
1975 WL w; 2729 WL w;
1976 2730
1977 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2731 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
1978 return; 2732 return;
1979 2733
1980 --signum; 2734 --signum;
1981 2735
1982#if EV_MULTIPLICITY 2736#if EV_MULTIPLICITY
1983 /* it is permissible to try to feed a signal to the wrong loop */ 2737 /* it is permissible to try to feed a signal to the wrong loop */
1984 /* or, likely more useful, feeding a signal nobody is waiting for */ 2738 /* or, likely more useful, feeding a signal nobody is waiting for */
1985 2739
1986 if (expect_false (signals [signum].loop != EV_A)) 2740 if (ecb_expect_false (signals [signum].loop != EV_A))
1987 return; 2741 return;
1988#endif 2742#endif
1989 2743
1990 signals [signum].pending = 0; 2744 signals [signum].pending = 0;
2745 ECB_MEMORY_FENCE_RELEASE;
1991 2746
1992 for (w = signals [signum].head; w; w = w->next) 2747 for (w = signals [signum].head; w; w = w->next)
1993 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2748 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1994} 2749}
1995 2750
… …
2086# include "ev_kqueue.c" 2841# include "ev_kqueue.c"
2087#endif 2842#endif
2088#if EV_USE_EPOLL 2843#if EV_USE_EPOLL
2089# include "ev_epoll.c" 2844# include "ev_epoll.c"
2090#endif 2845#endif
2846#if EV_USE_LINUXAIO
2847# include "ev_linuxaio.c"
2848#endif
2849#if EV_USE_IOURING
2850# include "ev_iouring.c"
2851#endif
2091#if EV_USE_POLL 2852#if EV_USE_POLL
2092# include "ev_poll.c" 2853# include "ev_poll.c"
2093#endif 2854#endif
2094#if EV_USE_SELECT 2855#if EV_USE_SELECT
2095# include "ev_select.c" 2856# include "ev_select.c"
2096#endif 2857#endif
2097 2858
2098int ecb_cold 2859ecb_cold int
2099ev_version_major (void) 2860ev_version_major (void) EV_NOEXCEPT
2100{ 2861{
2101 return EV_VERSION_MAJOR; 2862 return EV_VERSION_MAJOR;
2102} 2863}
2103 2864
2104int ecb_cold 2865ecb_cold int
2105ev_version_minor (void) 2866ev_version_minor (void) EV_NOEXCEPT
2106{ 2867{
2107 return EV_VERSION_MINOR; 2868 return EV_VERSION_MINOR;
2108} 2869}
2109 2870
2110/* return true if we are running with elevated privileges and should ignore env variables */ 2871/* return true if we are running with elevated privileges and should ignore env variables */
2111int inline_size ecb_cold 2872inline_size ecb_cold int
2112enable_secure (void) 2873enable_secure (void)
2113{ 2874{
2114#ifdef _WIN32 2875#ifdef _WIN32
2115 return 0; 2876 return 0;
2116#else 2877#else
2117 return getuid () != geteuid () 2878 return getuid () != geteuid ()
2118 || getgid () != getegid (); 2879 || getgid () != getegid ();
2119#endif 2880#endif
2120} 2881}
2121 2882
2122unsigned int ecb_cold 2883ecb_cold
2884unsigned int
2123ev_supported_backends (void) 2885ev_supported_backends (void) EV_NOEXCEPT
2124{ 2886{
2125 unsigned int flags = 0; 2887 unsigned int flags = 0;
2126 2888
2127 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2889 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2128 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2890 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
2129 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2891 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2892 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
2893 if (EV_USE_IOURING ) flags |= EVBACKEND_IOURING;
2130 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2894 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
2131 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2895 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
2132 2896
2133 return flags; 2897 return flags;
2134} 2898}
2135 2899
2136unsigned int ecb_cold 2900ecb_cold
2901unsigned int
2137ev_recommended_backends (void) 2902ev_recommended_backends (void) EV_NOEXCEPT
2138{ 2903{
2139 unsigned int flags = ev_supported_backends (); 2904 unsigned int flags = ev_supported_backends ();
2140 2905
2141#ifndef __NetBSD__ 2906#ifndef __NetBSD__
2142 /* kqueue is borked on everything but netbsd apparently */ 2907 /* kqueue is borked on everything but netbsd apparently */
… …
2150#endif 2915#endif
2151#ifdef __FreeBSD__ 2916#ifdef __FreeBSD__
2152 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ 2917 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2153#endif 2918#endif
2154 2919
2920 /* TODO: linuxaio is very experimental */
2921#if !EV_RECOMMEND_LINUXAIO
2922 flags &= ~EVBACKEND_LINUXAIO;
2923#endif
2924 /* TODO: linuxaio is super experimental */
2925#if !EV_RECOMMEND_IOURING
2926 flags &= ~EVBACKEND_IOURING;
2927#endif
2928
2155 return flags; 2929 return flags;
2156} 2930}
2157 2931
2158unsigned int ecb_cold 2932ecb_cold
2933unsigned int
2159ev_embeddable_backends (void) 2934ev_embeddable_backends (void) EV_NOEXCEPT
2160{ 2935{
2161 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2936 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2162 2937
2163 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2938 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2164 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 2939 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2165 flags &= ~EVBACKEND_EPOLL; 2940 flags &= ~EVBACKEND_EPOLL;
2166 2941
2942 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
2943
2944 /* EVBACKEND_IOURING is practically embeddable, but the current implementation is not
2945 * because our backend_fd is the epoll fd we need as fallback.
2946 * if the kernel ever is fixed, this might change...
2947 */
2948
2167 return flags; 2949 return flags;
2168} 2950}
2169 2951
2170unsigned int 2952unsigned int
2171ev_backend (EV_P) 2953ev_backend (EV_P) EV_NOEXCEPT
2172{ 2954{
2173 return backend; 2955 return backend;
2174} 2956}
2175 2957
2176#if EV_FEATURE_API 2958#if EV_FEATURE_API
2177unsigned int 2959unsigned int
2178ev_iteration (EV_P) 2960ev_iteration (EV_P) EV_NOEXCEPT
2179{ 2961{
2180 return loop_count; 2962 return loop_count;
2181} 2963}
2182 2964
2183unsigned int 2965unsigned int
2184ev_depth (EV_P) 2966ev_depth (EV_P) EV_NOEXCEPT
2185{ 2967{
2186 return loop_depth; 2968 return loop_depth;
2187} 2969}
2188 2970
2189void 2971void
2190ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2972ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2191{ 2973{
2192 io_blocktime = interval; 2974 io_blocktime = interval;
2193} 2975}
2194 2976
2195void 2977void
2196ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2978ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2197{ 2979{
2198 timeout_blocktime = interval; 2980 timeout_blocktime = interval;
2199} 2981}
2200 2982
2201void 2983void
2202ev_set_userdata (EV_P_ void *data) 2984ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2203{ 2985{
2204 userdata = data; 2986 userdata = data;
2205} 2987}
2206 2988
2207void * 2989void *
2208ev_userdata (EV_P) 2990ev_userdata (EV_P) EV_NOEXCEPT
2209{ 2991{
2210 return userdata; 2992 return userdata;
2211} 2993}
2212 2994
2213void 2995void
2214ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2996ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
2215{ 2997{
2216 invoke_cb = invoke_pending_cb; 2998 invoke_cb = invoke_pending_cb;
2217} 2999}
2218 3000
2219void 3001void
2220ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 3002ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
2221{ 3003{
2222 release_cb = release; 3004 release_cb = release;
2223 acquire_cb = acquire; 3005 acquire_cb = acquire;
2224} 3006}
2225#endif 3007#endif
2226 3008
2227/* initialise a loop structure, must be zero-initialised */ 3009/* initialise a loop structure, must be zero-initialised */
2228static void noinline ecb_cold 3010ecb_noinline ecb_cold
3011static void
2229loop_init (EV_P_ unsigned int flags) 3012loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
2230{ 3013{
2231 if (!backend) 3014 if (!backend)
2232 { 3015 {
2233 origflags = flags; 3016 origflags = flags;
2234 3017
… …
2279#if EV_ASYNC_ENABLE 3062#if EV_ASYNC_ENABLE
2280 async_pending = 0; 3063 async_pending = 0;
2281#endif 3064#endif
2282 pipe_write_skipped = 0; 3065 pipe_write_skipped = 0;
2283 pipe_write_wanted = 0; 3066 pipe_write_wanted = 0;
3067 evpipe [0] = -1;
3068 evpipe [1] = -1;
2284#if EV_USE_INOTIFY 3069#if EV_USE_INOTIFY
2285 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3070 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2286#endif 3071#endif
2287#if EV_USE_SIGNALFD 3072#if EV_USE_SIGNALFD
2288 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 3073 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
… …
2290 3075
2291 if (!(flags & EVBACKEND_MASK)) 3076 if (!(flags & EVBACKEND_MASK))
2292 flags |= ev_recommended_backends (); 3077 flags |= ev_recommended_backends ();
2293 3078
2294#if EV_USE_IOCP 3079#if EV_USE_IOCP
2295 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 3080 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2296#endif 3081#endif
2297#if EV_USE_PORT 3082#if EV_USE_PORT
2298 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3083 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
2299#endif 3084#endif
2300#if EV_USE_KQUEUE 3085#if EV_USE_KQUEUE
2301 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 3086 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
3087#endif
3088#if EV_USE_IOURING
3089 if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
3090#endif
3091#if EV_USE_LINUXAIO
3092 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
2302#endif 3093#endif
2303#if EV_USE_EPOLL 3094#if EV_USE_EPOLL
2304 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3095 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
2305#endif 3096#endif
2306#if EV_USE_POLL 3097#if EV_USE_POLL
2307 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3098 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
2308#endif 3099#endif
2309#if EV_USE_SELECT 3100#if EV_USE_SELECT
2310 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3101 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
2311#endif 3102#endif
2312 3103
2313 ev_prepare_init (&pending_w, pendingcb); 3104 ev_prepare_init (&pending_w, pendingcb);
2314 3105
2315#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3106#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
2318#endif 3109#endif
2319 } 3110 }
2320} 3111}
2321 3112
2322/* free up a loop structure */ 3113/* free up a loop structure */
2323void ecb_cold 3114ecb_cold
3115void
2324ev_loop_destroy (EV_P) 3116ev_loop_destroy (EV_P)
2325{ 3117{
2326 int i; 3118 int i;
2327 3119
2328#if EV_MULTIPLICITY 3120#if EV_MULTIPLICITY
… …
2331 return; 3123 return;
2332#endif 3124#endif
2333 3125
2334#if EV_CLEANUP_ENABLE 3126#if EV_CLEANUP_ENABLE
2335 /* queue cleanup watchers (and execute them) */ 3127 /* queue cleanup watchers (and execute them) */
2336 if (expect_false (cleanupcnt)) 3128 if (ecb_expect_false (cleanupcnt))
2337 { 3129 {
2338 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); 3130 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2339 EV_INVOKE_PENDING; 3131 EV_INVOKE_PENDING;
2340 } 3132 }
2341#endif 3133#endif
2342 3134
2343#if EV_CHILD_ENABLE 3135#if EV_CHILD_ENABLE
2344 if (ev_is_active (&childev)) 3136 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2345 { 3137 {
2346 ev_ref (EV_A); /* child watcher */ 3138 ev_ref (EV_A); /* child watcher */
2347 ev_signal_stop (EV_A_ &childev); 3139 ev_signal_stop (EV_A_ &childev);
2348 } 3140 }
2349#endif 3141#endif
… …
2351 if (ev_is_active (&pipe_w)) 3143 if (ev_is_active (&pipe_w))
2352 { 3144 {
2353 /*ev_ref (EV_A);*/ 3145 /*ev_ref (EV_A);*/
2354 /*ev_io_stop (EV_A_ &pipe_w);*/ 3146 /*ev_io_stop (EV_A_ &pipe_w);*/
2355 3147
2356#if EV_USE_EVENTFD
2357 if (evfd >= 0)
2358 close (evfd);
2359#endif
2360
2361 if (evpipe [0] >= 0)
2362 {
2363 EV_WIN32_CLOSE_FD (evpipe [0]); 3148 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2364 EV_WIN32_CLOSE_FD (evpipe [1]); 3149 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2365 }
2366 } 3150 }
2367 3151
2368#if EV_USE_SIGNALFD 3152#if EV_USE_SIGNALFD
2369 if (ev_is_active (&sigfd_w)) 3153 if (ev_is_active (&sigfd_w))
2370 close (sigfd); 3154 close (sigfd);
… …
2377 3161
2378 if (backend_fd >= 0) 3162 if (backend_fd >= 0)
2379 close (backend_fd); 3163 close (backend_fd);
2380 3164
2381#if EV_USE_IOCP 3165#if EV_USE_IOCP
2382 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3166 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2383#endif 3167#endif
2384#if EV_USE_PORT 3168#if EV_USE_PORT
2385 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3169 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
2386#endif 3170#endif
2387#if EV_USE_KQUEUE 3171#if EV_USE_KQUEUE
2388 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3172 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3173#endif
3174#if EV_USE_IOURING
3175 if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
3176#endif
3177#if EV_USE_LINUXAIO
3178 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
2389#endif 3179#endif
2390#if EV_USE_EPOLL 3180#if EV_USE_EPOLL
2391 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3181 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
2392#endif 3182#endif
2393#if EV_USE_POLL 3183#if EV_USE_POLL
2394 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3184 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
2395#endif 3185#endif
2396#if EV_USE_SELECT 3186#if EV_USE_SELECT
2397 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3187 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
2398#endif 3188#endif
2399 3189
2400 for (i = NUMPRI; i--; ) 3190 for (i = NUMPRI; i--; )
2401 { 3191 {
2402 array_free (pending, [i]); 3192 array_free (pending, [i]);
… …
2444 3234
2445inline_size void 3235inline_size void
2446loop_fork (EV_P) 3236loop_fork (EV_P)
2447{ 3237{
2448#if EV_USE_PORT 3238#if EV_USE_PORT
2449 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3239 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
2450#endif 3240#endif
2451#if EV_USE_KQUEUE 3241#if EV_USE_KQUEUE
2452 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3242 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3243#endif
3244#if EV_USE_IOURING
3245 if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
3246#endif
3247#if EV_USE_LINUXAIO
3248 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
2453#endif 3249#endif
2454#if EV_USE_EPOLL 3250#if EV_USE_EPOLL
2455 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3251 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
2456#endif 3252#endif
2457#if EV_USE_INOTIFY 3253#if EV_USE_INOTIFY
2458 infy_fork (EV_A); 3254 infy_fork (EV_A);
2459#endif 3255#endif
2460 3256
3257#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2461 if (ev_is_active (&pipe_w)) 3258 if (ev_is_active (&pipe_w) && postfork != 2)
2462 { 3259 {
2463 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 3260 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2464 3261
2465 ev_ref (EV_A); 3262 ev_ref (EV_A);
2466 ev_io_stop (EV_A_ &pipe_w); 3263 ev_io_stop (EV_A_ &pipe_w);
2467 3264
2468#if EV_USE_EVENTFD
2469 if (evfd >= 0)
2470 close (evfd);
2471#endif
2472
2473 if (evpipe [0] >= 0) 3265 if (evpipe [0] >= 0)
2474 {
2475 EV_WIN32_CLOSE_FD (evpipe [0]); 3266 EV_WIN32_CLOSE_FD (evpipe [0]);
2476 EV_WIN32_CLOSE_FD (evpipe [1]);
2477 }
2478 3267
2479#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2480 evpipe_init (EV_A); 3268 evpipe_init (EV_A);
2481 /* now iterate over everything, in case we missed something */ 3269 /* iterate over everything, in case we missed something before */
2482 pipecb (EV_A_ &pipe_w, EV_READ); 3270 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2483#endif
2484 } 3271 }
3272#endif
2485 3273
2486 postfork = 0; 3274 postfork = 0;
2487} 3275}
2488 3276
2489#if EV_MULTIPLICITY 3277#if EV_MULTIPLICITY
2490 3278
3279ecb_cold
2491struct ev_loop * ecb_cold 3280struct ev_loop *
2492ev_loop_new (unsigned int flags) 3281ev_loop_new (unsigned int flags) EV_NOEXCEPT
2493{ 3282{
2494 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3283 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2495 3284
2496 memset (EV_A, 0, sizeof (struct ev_loop)); 3285 memset (EV_A, 0, sizeof (struct ev_loop));
2497 loop_init (EV_A_ flags); 3286 loop_init (EV_A_ flags);
… …
2504} 3293}
2505 3294
2506#endif /* multiplicity */ 3295#endif /* multiplicity */
2507 3296
2508#if EV_VERIFY 3297#if EV_VERIFY
2509static void noinline ecb_cold 3298ecb_noinline ecb_cold
3299static void
2510verify_watcher (EV_P_ W w) 3300verify_watcher (EV_P_ W w)
2511{ 3301{
2512 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3302 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2513 3303
2514 if (w->pending) 3304 if (w->pending)
2515 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3305 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2516} 3306}
2517 3307
2518static void noinline ecb_cold 3308ecb_noinline ecb_cold
3309static void
2519verify_heap (EV_P_ ANHE *heap, int N) 3310verify_heap (EV_P_ ANHE *heap, int N)
2520{ 3311{
2521 int i; 3312 int i;
2522 3313
2523 for (i = HEAP0; i < N + HEAP0; ++i) 3314 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2528 3319
2529 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3320 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2530 } 3321 }
2531} 3322}
2532 3323
2533static void noinline ecb_cold 3324ecb_noinline ecb_cold
3325static void
2534array_verify (EV_P_ W *ws, int cnt) 3326array_verify (EV_P_ W *ws, int cnt)
2535{ 3327{
2536 while (cnt--) 3328 while (cnt--)
2537 { 3329 {
2538 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3330 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2541} 3333}
2542#endif 3334#endif
2543 3335
2544#if EV_FEATURE_API 3336#if EV_FEATURE_API
2545void ecb_cold 3337void ecb_cold
2546ev_verify (EV_P) 3338ev_verify (EV_P) EV_NOEXCEPT
2547{ 3339{
2548#if EV_VERIFY 3340#if EV_VERIFY
2549 int i; 3341 int i;
2550 WL w; 3342 WL w, w2;
2551 3343
2552 assert (activecnt >= -1); 3344 assert (activecnt >= -1);
2553 3345
2554 assert (fdchangemax >= fdchangecnt); 3346 assert (fdchangemax >= fdchangecnt);
2555 for (i = 0; i < fdchangecnt; ++i) 3347 for (i = 0; i < fdchangecnt; ++i)
2556 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3348 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2557 3349
2558 assert (anfdmax >= 0); 3350 assert (anfdmax >= 0);
2559 for (i = 0; i < anfdmax; ++i) 3351 for (i = 0; i < anfdmax; ++i)
3352 {
3353 int j = 0;
3354
2560 for (w = anfds [i].head; w; w = w->next) 3355 for (w = w2 = anfds [i].head; w; w = w->next)
2561 { 3356 {
2562 verify_watcher (EV_A_ (W)w); 3357 verify_watcher (EV_A_ (W)w);
3358
3359 if (j++ & 1)
3360 {
3361 assert (("libev: io watcher list contains a loop", w != w2));
3362 w2 = w2->next;
3363 }
3364
2563 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3365 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2564 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3366 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2565 } 3367 }
3368 }
2566 3369
2567 assert (timermax >= timercnt); 3370 assert (timermax >= timercnt);
2568 verify_heap (EV_A_ timers, timercnt); 3371 verify_heap (EV_A_ timers, timercnt);
2569 3372
2570#if EV_PERIODIC_ENABLE 3373#if EV_PERIODIC_ENABLE
… …
2616#endif 3419#endif
2617} 3420}
2618#endif 3421#endif
2619 3422
2620#if EV_MULTIPLICITY 3423#if EV_MULTIPLICITY
3424ecb_cold
2621struct ev_loop * ecb_cold 3425struct ev_loop *
2622#else 3426#else
2623int 3427int
2624#endif 3428#endif
2625ev_default_loop (unsigned int flags) 3429ev_default_loop (unsigned int flags) EV_NOEXCEPT
2626{ 3430{
2627 if (!ev_default_loop_ptr) 3431 if (!ev_default_loop_ptr)
2628 { 3432 {
2629#if EV_MULTIPLICITY 3433#if EV_MULTIPLICITY
2630 EV_P = ev_default_loop_ptr = &default_loop_struct; 3434 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2649 3453
2650 return ev_default_loop_ptr; 3454 return ev_default_loop_ptr;
2651} 3455}
2652 3456
2653void 3457void
2654ev_loop_fork (EV_P) 3458ev_loop_fork (EV_P) EV_NOEXCEPT
2655{ 3459{
2656 postfork = 1; /* must be in line with ev_default_fork */ 3460 postfork = 1;
2657} 3461}
2658 3462
2659/*****************************************************************************/ 3463/*****************************************************************************/
2660 3464
2661void 3465void
… …
2663{ 3467{
2664 EV_CB_INVOKE ((W)w, revents); 3468 EV_CB_INVOKE ((W)w, revents);
2665} 3469}
2666 3470
2667unsigned int 3471unsigned int
2668ev_pending_count (EV_P) 3472ev_pending_count (EV_P) EV_NOEXCEPT
2669{ 3473{
2670 int pri; 3474 int pri;
2671 unsigned int count = 0; 3475 unsigned int count = 0;
2672 3476
2673 for (pri = NUMPRI; pri--; ) 3477 for (pri = NUMPRI; pri--; )
2674 count += pendingcnt [pri]; 3478 count += pendingcnt [pri];
2675 3479
2676 return count; 3480 return count;
2677} 3481}
2678 3482
2679void noinline 3483ecb_noinline
3484void
2680ev_invoke_pending (EV_P) 3485ev_invoke_pending (EV_P)
2681{ 3486{
2682 int pri; 3487 pendingpri = NUMPRI;
2683 3488
2684 for (pri = NUMPRI; pri--; ) 3489 do
3490 {
3491 --pendingpri;
3492
3493 /* pendingpri possibly gets modified in the inner loop */
2685 while (pendingcnt [pri]) 3494 while (pendingcnt [pendingpri])
2686 { 3495 {
2687 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3496 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2688 3497
2689 p->w->pending = 0; 3498 p->w->pending = 0;
2690 EV_CB_INVOKE (p->w, p->events); 3499 EV_CB_INVOKE (p->w, p->events);
2691 EV_FREQUENT_CHECK; 3500 EV_FREQUENT_CHECK;
2692 } 3501 }
3502 }
3503 while (pendingpri);
2693} 3504}
2694 3505
2695#if EV_IDLE_ENABLE 3506#if EV_IDLE_ENABLE
2696/* make idle watchers pending. this handles the "call-idle */ 3507/* make idle watchers pending. this handles the "call-idle */
2697/* only when higher priorities are idle" logic */ 3508/* only when higher priorities are idle" logic */
2698inline_size void 3509inline_size void
2699idle_reify (EV_P) 3510idle_reify (EV_P)
2700{ 3511{
2701 if (expect_false (idleall)) 3512 if (ecb_expect_false (idleall))
2702 { 3513 {
2703 int pri; 3514 int pri;
2704 3515
2705 for (pri = NUMPRI; pri--; ) 3516 for (pri = NUMPRI; pri--; )
2706 { 3517 {
… …
2736 { 3547 {
2737 ev_at (w) += w->repeat; 3548 ev_at (w) += w->repeat;
2738 if (ev_at (w) < mn_now) 3549 if (ev_at (w) < mn_now)
2739 ev_at (w) = mn_now; 3550 ev_at (w) = mn_now;
2740 3551
2741 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 3552 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > EV_TS_CONST (0.)));
2742 3553
2743 ANHE_at_cache (timers [HEAP0]); 3554 ANHE_at_cache (timers [HEAP0]);
2744 downheap (timers, timercnt, HEAP0); 3555 downheap (timers, timercnt, HEAP0);
2745 } 3556 }
2746 else 3557 else
… …
2755 } 3566 }
2756} 3567}
2757 3568
2758#if EV_PERIODIC_ENABLE 3569#if EV_PERIODIC_ENABLE
2759 3570
2760static void noinline 3571ecb_noinline
3572static void
2761periodic_recalc (EV_P_ ev_periodic *w) 3573periodic_recalc (EV_P_ ev_periodic *w)
2762{ 3574{
2763 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3575 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2764 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); 3576 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2765 3577
… …
2767 while (at <= ev_rt_now) 3579 while (at <= ev_rt_now)
2768 { 3580 {
2769 ev_tstamp nat = at + w->interval; 3581 ev_tstamp nat = at + w->interval;
2770 3582
2771 /* when resolution fails us, we use ev_rt_now */ 3583 /* when resolution fails us, we use ev_rt_now */
2772 if (expect_false (nat == at)) 3584 if (ecb_expect_false (nat == at))
2773 { 3585 {
2774 at = ev_rt_now; 3586 at = ev_rt_now;
2775 break; 3587 break;
2776 } 3588 }
2777 3589
… …
2787{ 3599{
2788 EV_FREQUENT_CHECK; 3600 EV_FREQUENT_CHECK;
2789 3601
2790 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3602 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2791 { 3603 {
2792 int feed_count = 0;
2793
2794 do 3604 do
2795 { 3605 {
2796 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3606 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2797 3607
2798 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3608 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2825 } 3635 }
2826} 3636}
2827 3637
2828/* simply recalculate all periodics */ 3638/* simply recalculate all periodics */
2829/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3639/* TODO: maybe ensure that at least one event happens when jumping forward? */
2830static void noinline ecb_cold 3640ecb_noinline ecb_cold
3641static void
2831periodics_reschedule (EV_P) 3642periodics_reschedule (EV_P)
2832{ 3643{
2833 int i; 3644 int i;
2834 3645
2835 /* adjust periodics after time jump */ 3646 /* adjust periodics after time jump */
… …
2848 reheap (periodics, periodiccnt); 3659 reheap (periodics, periodiccnt);
2849} 3660}
2850#endif 3661#endif
2851 3662
2852/* adjust all timers by a given offset */ 3663/* adjust all timers by a given offset */
2853static void noinline ecb_cold 3664ecb_noinline ecb_cold
3665static void
2854timers_reschedule (EV_P_ ev_tstamp adjust) 3666timers_reschedule (EV_P_ ev_tstamp adjust)
2855{ 3667{
2856 int i; 3668 int i;
2857 3669
2858 for (i = 0; i < timercnt; ++i) 3670 for (i = 0; i < timercnt; ++i)
… …
2867/* also detect if there was a timejump, and act accordingly */ 3679/* also detect if there was a timejump, and act accordingly */
2868inline_speed void 3680inline_speed void
2869time_update (EV_P_ ev_tstamp max_block) 3681time_update (EV_P_ ev_tstamp max_block)
2870{ 3682{
2871#if EV_USE_MONOTONIC 3683#if EV_USE_MONOTONIC
2872 if (expect_true (have_monotonic)) 3684 if (ecb_expect_true (have_monotonic))
2873 { 3685 {
2874 int i; 3686 int i;
2875 ev_tstamp odiff = rtmn_diff; 3687 ev_tstamp odiff = rtmn_diff;
2876 3688
2877 mn_now = get_clock (); 3689 mn_now = get_clock ();
2878 3690
2879 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3691 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2880 /* interpolate in the meantime */ 3692 /* interpolate in the meantime */
2881 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3693 if (ecb_expect_true (mn_now - now_floor < EV_TS_CONST (MIN_TIMEJUMP * .5)))
2882 { 3694 {
2883 ev_rt_now = rtmn_diff + mn_now; 3695 ev_rt_now = rtmn_diff + mn_now;
2884 return; 3696 return;
2885 } 3697 }
2886 3698
… …
2900 ev_tstamp diff; 3712 ev_tstamp diff;
2901 rtmn_diff = ev_rt_now - mn_now; 3713 rtmn_diff = ev_rt_now - mn_now;
2902 3714
2903 diff = odiff - rtmn_diff; 3715 diff = odiff - rtmn_diff;
2904 3716
2905 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP)) 3717 if (ecb_expect_true ((diff < EV_TS_CONST (0.) ? -diff : diff) < EV_TS_CONST (MIN_TIMEJUMP)))
2906 return; /* all is well */ 3718 return; /* all is well */
2907 3719
2908 ev_rt_now = ev_time (); 3720 ev_rt_now = ev_time ();
2909 mn_now = get_clock (); 3721 mn_now = get_clock ();
2910 now_floor = mn_now; 3722 now_floor = mn_now;
… …
2919 else 3731 else
2920#endif 3732#endif
2921 { 3733 {
2922 ev_rt_now = ev_time (); 3734 ev_rt_now = ev_time ();
2923 3735
2924 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 3736 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + EV_TS_CONST (MIN_TIMEJUMP)))
2925 { 3737 {
2926 /* adjust timers. this is easy, as the offset is the same for all of them */ 3738 /* adjust timers. this is easy, as the offset is the same for all of them */
2927 timers_reschedule (EV_A_ ev_rt_now - mn_now); 3739 timers_reschedule (EV_A_ ev_rt_now - mn_now);
2928#if EV_PERIODIC_ENABLE 3740#if EV_PERIODIC_ENABLE
2929 periodics_reschedule (EV_A); 3741 periodics_reschedule (EV_A);
… …
2952#if EV_VERIFY >= 2 3764#if EV_VERIFY >= 2
2953 ev_verify (EV_A); 3765 ev_verify (EV_A);
2954#endif 3766#endif
2955 3767
2956#ifndef _WIN32 3768#ifndef _WIN32
2957 if (expect_false (curpid)) /* penalise the forking check even more */ 3769 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
2958 if (expect_false (getpid () != curpid)) 3770 if (ecb_expect_false (getpid () != curpid))
2959 { 3771 {
2960 curpid = getpid (); 3772 curpid = getpid ();
2961 postfork = 1; 3773 postfork = 1;
2962 } 3774 }
2963#endif 3775#endif
2964 3776
2965#if EV_FORK_ENABLE 3777#if EV_FORK_ENABLE
2966 /* we might have forked, so queue fork handlers */ 3778 /* we might have forked, so queue fork handlers */
2967 if (expect_false (postfork)) 3779 if (ecb_expect_false (postfork))
2968 if (forkcnt) 3780 if (forkcnt)
2969 { 3781 {
2970 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3782 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2971 EV_INVOKE_PENDING; 3783 EV_INVOKE_PENDING;
2972 } 3784 }
2973#endif 3785#endif
2974 3786
2975#if EV_PREPARE_ENABLE 3787#if EV_PREPARE_ENABLE
2976 /* queue prepare watchers (and execute them) */ 3788 /* queue prepare watchers (and execute them) */
2977 if (expect_false (preparecnt)) 3789 if (ecb_expect_false (preparecnt))
2978 { 3790 {
2979 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3791 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2980 EV_INVOKE_PENDING; 3792 EV_INVOKE_PENDING;
2981 } 3793 }
2982#endif 3794#endif
2983 3795
2984 if (expect_false (loop_done)) 3796 if (ecb_expect_false (loop_done))
2985 break; 3797 break;
2986 3798
2987 /* we might have forked, so reify kernel state if necessary */ 3799 /* we might have forked, so reify kernel state if necessary */
2988 if (expect_false (postfork)) 3800 if (ecb_expect_false (postfork))
2989 loop_fork (EV_A); 3801 loop_fork (EV_A);
2990 3802
2991 /* update fd-related kernel structures */ 3803 /* update fd-related kernel structures */
2992 fd_reify (EV_A); 3804 fd_reify (EV_A);
2993 3805
… …
2998 3810
2999 /* remember old timestamp for io_blocktime calculation */ 3811 /* remember old timestamp for io_blocktime calculation */
3000 ev_tstamp prev_mn_now = mn_now; 3812 ev_tstamp prev_mn_now = mn_now;
3001 3813
3002 /* update time to cancel out callback processing overhead */ 3814 /* update time to cancel out callback processing overhead */
3003 time_update (EV_A_ 1e100); 3815 time_update (EV_A_ EV_TS_CONST (EV_TSTAMP_HUGE));
3004 3816
3005 /* from now on, we want a pipe-wake-up */ 3817 /* from now on, we want a pipe-wake-up */
3006 pipe_write_wanted = 1; 3818 pipe_write_wanted = 1;
3007 3819
3008 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */ 3820 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3009 3821
3010 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) 3822 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
3011 { 3823 {
3012 waittime = MAX_BLOCKTIME; 3824 waittime = EV_TS_CONST (MAX_BLOCKTIME);
3013 3825
3014 if (timercnt) 3826 if (timercnt)
3015 { 3827 {
3016 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now; 3828 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
3017 if (waittime > to) waittime = to; 3829 if (waittime > to) waittime = to;
… …
3024 if (waittime > to) waittime = to; 3836 if (waittime > to) waittime = to;
3025 } 3837 }
3026#endif 3838#endif
3027 3839
3028 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3840 /* don't let timeouts decrease the waittime below timeout_blocktime */
3029 if (expect_false (waittime < timeout_blocktime)) 3841 if (ecb_expect_false (waittime < timeout_blocktime))
3030 waittime = timeout_blocktime; 3842 waittime = timeout_blocktime;
3031 3843
3032 /* at this point, we NEED to wait, so we have to ensure */ 3844 /* at this point, we NEED to wait, so we have to ensure */
3033 /* to pass a minimum nonzero value to the backend */ 3845 /* to pass a minimum nonzero value to the backend */
3034 if (expect_false (waittime < backend_mintime)) 3846 if (ecb_expect_false (waittime < backend_mintime))
3035 waittime = backend_mintime; 3847 waittime = backend_mintime;
3036 3848
3037 /* extra check because io_blocktime is commonly 0 */ 3849 /* extra check because io_blocktime is commonly 0 */
3038 if (expect_false (io_blocktime)) 3850 if (ecb_expect_false (io_blocktime))
3039 { 3851 {
3040 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3852 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3041 3853
3042 if (sleeptime > waittime - backend_mintime) 3854 if (sleeptime > waittime - backend_mintime)
3043 sleeptime = waittime - backend_mintime; 3855 sleeptime = waittime - backend_mintime;
3044 3856
3045 if (expect_true (sleeptime > 0.)) 3857 if (ecb_expect_true (sleeptime > EV_TS_CONST (0.)))
3046 { 3858 {
3047 ev_sleep (sleeptime); 3859 ev_sleep (sleeptime);
3048 waittime -= sleeptime; 3860 waittime -= sleeptime;
3049 } 3861 }
3050 } 3862 }
… …
3057 backend_poll (EV_A_ waittime); 3869 backend_poll (EV_A_ waittime);
3058 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3870 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3059 3871
3060 pipe_write_wanted = 0; /* just an optimisation, no fence needed */ 3872 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3061 3873
3874 ECB_MEMORY_FENCE_ACQUIRE;
3062 if (pipe_write_skipped) 3875 if (pipe_write_skipped)
3063 { 3876 {
3064 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 3877 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3065 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3878 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3066 } 3879 }
3067 3880
3068
3069 /* update ev_rt_now, do magic */ 3881 /* update ev_rt_now, do magic */
3070 time_update (EV_A_ waittime + sleeptime); 3882 time_update (EV_A_ waittime + sleeptime);
3071 } 3883 }
3072 3884
3073 /* queue pending timers and reschedule them */ 3885 /* queue pending timers and reschedule them */
… …
3081 idle_reify (EV_A); 3893 idle_reify (EV_A);
3082#endif 3894#endif
3083 3895
3084#if EV_CHECK_ENABLE 3896#if EV_CHECK_ENABLE
3085 /* queue check watchers, to be executed first */ 3897 /* queue check watchers, to be executed first */
3086 if (expect_false (checkcnt)) 3898 if (ecb_expect_false (checkcnt))
3087 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3899 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3088#endif 3900#endif
3089 3901
3090 EV_INVOKE_PENDING; 3902 EV_INVOKE_PENDING;
3091 } 3903 }
3092 while (expect_true ( 3904 while (ecb_expect_true (
3093 activecnt 3905 activecnt
3094 && !loop_done 3906 && !loop_done
3095 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) 3907 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
3096 )); 3908 ));
3097 3909
… …
3104 3916
3105 return activecnt; 3917 return activecnt;
3106} 3918}
3107 3919
3108void 3920void
3109ev_break (EV_P_ int how) 3921ev_break (EV_P_ int how) EV_NOEXCEPT
3110{ 3922{
3111 loop_done = how; 3923 loop_done = how;
3112} 3924}
3113 3925
3114void 3926void
3115ev_ref (EV_P) 3927ev_ref (EV_P) EV_NOEXCEPT
3116{ 3928{
3117 ++activecnt; 3929 ++activecnt;
3118} 3930}
3119 3931
3120void 3932void
3121ev_unref (EV_P) 3933ev_unref (EV_P) EV_NOEXCEPT
3122{ 3934{
3123 --activecnt; 3935 --activecnt;
3124} 3936}
3125 3937
3126void 3938void
3127ev_now_update (EV_P) 3939ev_now_update (EV_P) EV_NOEXCEPT
3128{ 3940{
3129 time_update (EV_A_ 1e100); 3941 time_update (EV_A_ EV_TSTAMP_HUGE);
3130} 3942}
3131 3943
3132void 3944void
3133ev_suspend (EV_P) 3945ev_suspend (EV_P) EV_NOEXCEPT
3134{ 3946{
3135 ev_now_update (EV_A); 3947 ev_now_update (EV_A);
3136} 3948}
3137 3949
3138void 3950void
3139ev_resume (EV_P) 3951ev_resume (EV_P) EV_NOEXCEPT
3140{ 3952{
3141 ev_tstamp mn_prev = mn_now; 3953 ev_tstamp mn_prev = mn_now;
3142 3954
3143 ev_now_update (EV_A); 3955 ev_now_update (EV_A);
3144 timers_reschedule (EV_A_ mn_now - mn_prev); 3956 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
3161inline_size void 3973inline_size void
3162wlist_del (WL *head, WL elem) 3974wlist_del (WL *head, WL elem)
3163{ 3975{
3164 while (*head) 3976 while (*head)
3165 { 3977 {
3166 if (expect_true (*head == elem)) 3978 if (ecb_expect_true (*head == elem))
3167 { 3979 {
3168 *head = elem->next; 3980 *head = elem->next;
3169 break; 3981 break;
3170 } 3982 }
3171 3983
… …
3183 w->pending = 0; 3995 w->pending = 0;
3184 } 3996 }
3185} 3997}
3186 3998
3187int 3999int
3188ev_clear_pending (EV_P_ void *w) 4000ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
3189{ 4001{
3190 W w_ = (W)w; 4002 W w_ = (W)w;
3191 int pending = w_->pending; 4003 int pending = w_->pending;
3192 4004
3193 if (expect_true (pending)) 4005 if (ecb_expect_true (pending))
3194 { 4006 {
3195 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4007 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3196 p->w = (W)&pending_w; 4008 p->w = (W)&pending_w;
3197 w_->pending = 0; 4009 w_->pending = 0;
3198 return p->events; 4010 return p->events;
… …
3225 w->active = 0; 4037 w->active = 0;
3226} 4038}
3227 4039
3228/*****************************************************************************/ 4040/*****************************************************************************/
3229 4041
3230void noinline 4042ecb_noinline
4043void
3231ev_io_start (EV_P_ ev_io *w) 4044ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
3232{ 4045{
3233 int fd = w->fd; 4046 int fd = w->fd;
3234 4047
3235 if (expect_false (ev_is_active (w))) 4048 if (ecb_expect_false (ev_is_active (w)))
3236 return; 4049 return;
3237 4050
3238 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4051 assert (("libev: ev_io_start called with negative fd", fd >= 0));
3239 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 4052 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
3240 4053
4054#if EV_VERIFY >= 2
4055 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4056#endif
3241 EV_FREQUENT_CHECK; 4057 EV_FREQUENT_CHECK;
3242 4058
3243 ev_start (EV_A_ (W)w, 1); 4059 ev_start (EV_A_ (W)w, 1);
3244 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4060 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
3245 wlist_add (&anfds[fd].head, (WL)w); 4061 wlist_add (&anfds[fd].head, (WL)w);
4062
4063 /* common bug, apparently */
4064 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3246 4065
3247 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 4066 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
3248 w->events &= ~EV__IOFDSET; 4067 w->events &= ~EV__IOFDSET;
3249 4068
3250 EV_FREQUENT_CHECK; 4069 EV_FREQUENT_CHECK;
3251} 4070}
3252 4071
3253void noinline 4072ecb_noinline
4073void
3254ev_io_stop (EV_P_ ev_io *w) 4074ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
3255{ 4075{
3256 clear_pending (EV_A_ (W)w); 4076 clear_pending (EV_A_ (W)w);
3257 if (expect_false (!ev_is_active (w))) 4077 if (ecb_expect_false (!ev_is_active (w)))
3258 return; 4078 return;
3259 4079
3260 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4080 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
3261 4081
4082#if EV_VERIFY >= 2
4083 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4084#endif
3262 EV_FREQUENT_CHECK; 4085 EV_FREQUENT_CHECK;
3263 4086
3264 wlist_del (&anfds[w->fd].head, (WL)w); 4087 wlist_del (&anfds[w->fd].head, (WL)w);
3265 ev_stop (EV_A_ (W)w); 4088 ev_stop (EV_A_ (W)w);
3266 4089
3267 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 4090 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3268 4091
3269 EV_FREQUENT_CHECK; 4092 EV_FREQUENT_CHECK;
3270} 4093}
3271 4094
3272void noinline 4095ecb_noinline
4096void
3273ev_timer_start (EV_P_ ev_timer *w) 4097ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
3274{ 4098{
3275 if (expect_false (ev_is_active (w))) 4099 if (ecb_expect_false (ev_is_active (w)))
3276 return; 4100 return;
3277 4101
3278 ev_at (w) += mn_now; 4102 ev_at (w) += mn_now;
3279 4103
3280 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4104 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
3281 4105
3282 EV_FREQUENT_CHECK; 4106 EV_FREQUENT_CHECK;
3283 4107
3284 ++timercnt; 4108 ++timercnt;
3285 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4109 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
3286 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4110 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
3287 ANHE_w (timers [ev_active (w)]) = (WT)w; 4111 ANHE_w (timers [ev_active (w)]) = (WT)w;
3288 ANHE_at_cache (timers [ev_active (w)]); 4112 ANHE_at_cache (timers [ev_active (w)]);
3289 upheap (timers, ev_active (w)); 4113 upheap (timers, ev_active (w));
3290 4114
3291 EV_FREQUENT_CHECK; 4115 EV_FREQUENT_CHECK;
3292 4116
3293 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4117 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
3294} 4118}
3295 4119
3296void noinline 4120ecb_noinline
4121void
3297ev_timer_stop (EV_P_ ev_timer *w) 4122ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
3298{ 4123{
3299 clear_pending (EV_A_ (W)w); 4124 clear_pending (EV_A_ (W)w);
3300 if (expect_false (!ev_is_active (w))) 4125 if (ecb_expect_false (!ev_is_active (w)))
3301 return; 4126 return;
3302 4127
3303 EV_FREQUENT_CHECK; 4128 EV_FREQUENT_CHECK;
3304 4129
3305 { 4130 {
… …
3307 4132
3308 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4133 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
3309 4134
3310 --timercnt; 4135 --timercnt;
3311 4136
3312 if (expect_true (active < timercnt + HEAP0)) 4137 if (ecb_expect_true (active < timercnt + HEAP0))
3313 { 4138 {
3314 timers [active] = timers [timercnt + HEAP0]; 4139 timers [active] = timers [timercnt + HEAP0];
3315 adjustheap (timers, timercnt, active); 4140 adjustheap (timers, timercnt, active);
3316 } 4141 }
3317 } 4142 }
… …
3321 ev_stop (EV_A_ (W)w); 4146 ev_stop (EV_A_ (W)w);
3322 4147
3323 EV_FREQUENT_CHECK; 4148 EV_FREQUENT_CHECK;
3324} 4149}
3325 4150
3326void noinline 4151ecb_noinline
4152void
3327ev_timer_again (EV_P_ ev_timer *w) 4153ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
3328{ 4154{
3329 EV_FREQUENT_CHECK; 4155 EV_FREQUENT_CHECK;
3330 4156
3331 clear_pending (EV_A_ (W)w); 4157 clear_pending (EV_A_ (W)w);
3332 4158
… …
3349 4175
3350 EV_FREQUENT_CHECK; 4176 EV_FREQUENT_CHECK;
3351} 4177}
3352 4178
3353ev_tstamp 4179ev_tstamp
3354ev_timer_remaining (EV_P_ ev_timer *w) 4180ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
3355{ 4181{
3356 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4182 return ev_at (w) - (ev_is_active (w) ? mn_now : EV_TS_CONST (0.));
3357} 4183}
3358 4184
3359#if EV_PERIODIC_ENABLE 4185#if EV_PERIODIC_ENABLE
3360void noinline 4186ecb_noinline
4187void
3361ev_periodic_start (EV_P_ ev_periodic *w) 4188ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
3362{ 4189{
3363 if (expect_false (ev_is_active (w))) 4190 if (ecb_expect_false (ev_is_active (w)))
3364 return; 4191 return;
3365 4192
3366 if (w->reschedule_cb) 4193 if (w->reschedule_cb)
3367 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4194 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
3368 else if (w->interval) 4195 else if (w->interval)
… …
3375 4202
3376 EV_FREQUENT_CHECK; 4203 EV_FREQUENT_CHECK;
3377 4204
3378 ++periodiccnt; 4205 ++periodiccnt;
3379 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4206 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
3380 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4207 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
3381 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4208 ANHE_w (periodics [ev_active (w)]) = (WT)w;
3382 ANHE_at_cache (periodics [ev_active (w)]); 4209 ANHE_at_cache (periodics [ev_active (w)]);
3383 upheap (periodics, ev_active (w)); 4210 upheap (periodics, ev_active (w));
3384 4211
3385 EV_FREQUENT_CHECK; 4212 EV_FREQUENT_CHECK;
3386 4213
3387 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4214 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
3388} 4215}
3389 4216
3390void noinline 4217ecb_noinline
4218void
3391ev_periodic_stop (EV_P_ ev_periodic *w) 4219ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
3392{ 4220{
3393 clear_pending (EV_A_ (W)w); 4221 clear_pending (EV_A_ (W)w);
3394 if (expect_false (!ev_is_active (w))) 4222 if (ecb_expect_false (!ev_is_active (w)))
3395 return; 4223 return;
3396 4224
3397 EV_FREQUENT_CHECK; 4225 EV_FREQUENT_CHECK;
3398 4226
3399 { 4227 {
… …
3401 4229
3402 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4230 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
3403 4231
3404 --periodiccnt; 4232 --periodiccnt;
3405 4233
3406 if (expect_true (active < periodiccnt + HEAP0)) 4234 if (ecb_expect_true (active < periodiccnt + HEAP0))
3407 { 4235 {
3408 periodics [active] = periodics [periodiccnt + HEAP0]; 4236 periodics [active] = periodics [periodiccnt + HEAP0];
3409 adjustheap (periodics, periodiccnt, active); 4237 adjustheap (periodics, periodiccnt, active);
3410 } 4238 }
3411 } 4239 }
… …
3413 ev_stop (EV_A_ (W)w); 4241 ev_stop (EV_A_ (W)w);
3414 4242
3415 EV_FREQUENT_CHECK; 4243 EV_FREQUENT_CHECK;
3416} 4244}
3417 4245
3418void noinline 4246ecb_noinline
4247void
3419ev_periodic_again (EV_P_ ev_periodic *w) 4248ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
3420{ 4249{
3421 /* TODO: use adjustheap and recalculation */ 4250 /* TODO: use adjustheap and recalculation */
3422 ev_periodic_stop (EV_A_ w); 4251 ev_periodic_stop (EV_A_ w);
3423 ev_periodic_start (EV_A_ w); 4252 ev_periodic_start (EV_A_ w);
3424} 4253}
… …
3428# define SA_RESTART 0 4257# define SA_RESTART 0
3429#endif 4258#endif
3430 4259
3431#if EV_SIGNAL_ENABLE 4260#if EV_SIGNAL_ENABLE
3432 4261
3433void noinline 4262ecb_noinline
4263void
3434ev_signal_start (EV_P_ ev_signal *w) 4264ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
3435{ 4265{
3436 if (expect_false (ev_is_active (w))) 4266 if (ecb_expect_false (ev_is_active (w)))
3437 return; 4267 return;
3438 4268
3439 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4269 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
3440 4270
3441#if EV_MULTIPLICITY 4271#if EV_MULTIPLICITY
3442 assert (("libev: a signal must not be attached to two different loops", 4272 assert (("libev: a signal must not be attached to two different loops",
3443 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4273 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3444 4274
3445 signals [w->signum - 1].loop = EV_A; 4275 signals [w->signum - 1].loop = EV_A;
4276 ECB_MEMORY_FENCE_RELEASE;
3446#endif 4277#endif
3447 4278
3448 EV_FREQUENT_CHECK; 4279 EV_FREQUENT_CHECK;
3449 4280
3450#if EV_USE_SIGNALFD 4281#if EV_USE_SIGNALFD
… …
3509 } 4340 }
3510 4341
3511 EV_FREQUENT_CHECK; 4342 EV_FREQUENT_CHECK;
3512} 4343}
3513 4344
3514void noinline 4345ecb_noinline
4346void
3515ev_signal_stop (EV_P_ ev_signal *w) 4347ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
3516{ 4348{
3517 clear_pending (EV_A_ (W)w); 4349 clear_pending (EV_A_ (W)w);
3518 if (expect_false (!ev_is_active (w))) 4350 if (ecb_expect_false (!ev_is_active (w)))
3519 return; 4351 return;
3520 4352
3521 EV_FREQUENT_CHECK; 4353 EV_FREQUENT_CHECK;
3522 4354
3523 wlist_del (&signals [w->signum - 1].head, (WL)w); 4355 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
3551#endif 4383#endif
3552 4384
3553#if EV_CHILD_ENABLE 4385#if EV_CHILD_ENABLE
3554 4386
3555void 4387void
3556ev_child_start (EV_P_ ev_child *w) 4388ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
3557{ 4389{
3558#if EV_MULTIPLICITY 4390#if EV_MULTIPLICITY
3559 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4391 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3560#endif 4392#endif
3561 if (expect_false (ev_is_active (w))) 4393 if (ecb_expect_false (ev_is_active (w)))
3562 return; 4394 return;
3563 4395
3564 EV_FREQUENT_CHECK; 4396 EV_FREQUENT_CHECK;
3565 4397
3566 ev_start (EV_A_ (W)w, 1); 4398 ev_start (EV_A_ (W)w, 1);
… …
3568 4400
3569 EV_FREQUENT_CHECK; 4401 EV_FREQUENT_CHECK;
3570} 4402}
3571 4403
3572void 4404void
3573ev_child_stop (EV_P_ ev_child *w) 4405ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
3574{ 4406{
3575 clear_pending (EV_A_ (W)w); 4407 clear_pending (EV_A_ (W)w);
3576 if (expect_false (!ev_is_active (w))) 4408 if (ecb_expect_false (!ev_is_active (w)))
3577 return; 4409 return;
3578 4410
3579 EV_FREQUENT_CHECK; 4411 EV_FREQUENT_CHECK;
3580 4412
3581 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); 4413 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
… …
3595 4427
3596#define DEF_STAT_INTERVAL 5.0074891 4428#define DEF_STAT_INTERVAL 5.0074891
3597#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4429#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3598#define MIN_STAT_INTERVAL 0.1074891 4430#define MIN_STAT_INTERVAL 0.1074891
3599 4431
3600static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4432ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
3601 4433
3602#if EV_USE_INOTIFY 4434#if EV_USE_INOTIFY
3603 4435
3604/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4436/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3605# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4437# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3606 4438
3607static void noinline 4439ecb_noinline
4440static void
3608infy_add (EV_P_ ev_stat *w) 4441infy_add (EV_P_ ev_stat *w)
3609{ 4442{
3610 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 4443 w->wd = inotify_add_watch (fs_fd, w->path,
4444 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4445 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4446 | IN_DONT_FOLLOW | IN_MASK_ADD);
3611 4447
3612 if (w->wd >= 0) 4448 if (w->wd >= 0)
3613 { 4449 {
3614 struct statfs sfs; 4450 struct statfs sfs;
3615 4451
… …
3619 4455
3620 if (!fs_2625) 4456 if (!fs_2625)
3621 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4457 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3622 else if (!statfs (w->path, &sfs) 4458 else if (!statfs (w->path, &sfs)
3623 && (sfs.f_type == 0x1373 /* devfs */ 4459 && (sfs.f_type == 0x1373 /* devfs */
4460 || sfs.f_type == 0x4006 /* fat */
4461 || sfs.f_type == 0x4d44 /* msdos */
3624 || sfs.f_type == 0xEF53 /* ext2/3 */ 4462 || sfs.f_type == 0xEF53 /* ext2/3 */
4463 || sfs.f_type == 0x72b6 /* jffs2 */
4464 || sfs.f_type == 0x858458f6 /* ramfs */
4465 || sfs.f_type == 0x5346544e /* ntfs */
3625 || sfs.f_type == 0x3153464a /* jfs */ 4466 || sfs.f_type == 0x3153464a /* jfs */
4467 || sfs.f_type == 0x9123683e /* btrfs */
3626 || sfs.f_type == 0x52654973 /* reiser3 */ 4468 || sfs.f_type == 0x52654973 /* reiser3 */
3627 || sfs.f_type == 0x01021994 /* tempfs */ 4469 || sfs.f_type == 0x01021994 /* tmpfs */
3628 || sfs.f_type == 0x58465342 /* xfs */)) 4470 || sfs.f_type == 0x58465342 /* xfs */))
3629 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4471 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3630 else 4472 else
3631 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4473 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3632 } 4474 }
… …
3667 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4509 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3668 ev_timer_again (EV_A_ &w->timer); 4510 ev_timer_again (EV_A_ &w->timer);
3669 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4511 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3670} 4512}
3671 4513
3672static void noinline 4514ecb_noinline
4515static void
3673infy_del (EV_P_ ev_stat *w) 4516infy_del (EV_P_ ev_stat *w)
3674{ 4517{
3675 int slot; 4518 int slot;
3676 int wd = w->wd; 4519 int wd = w->wd;
3677 4520
… …
3684 4527
3685 /* remove this watcher, if others are watching it, they will rearm */ 4528 /* remove this watcher, if others are watching it, they will rearm */
3686 inotify_rm_watch (fs_fd, wd); 4529 inotify_rm_watch (fs_fd, wd);
3687} 4530}
3688 4531
3689static void noinline 4532ecb_noinline
4533static void
3690infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4534infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3691{ 4535{
3692 if (slot < 0) 4536 if (slot < 0)
3693 /* overflow, need to check for all hash slots */ 4537 /* overflow, need to check for all hash slots */
3694 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4538 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3730 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4574 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3731 ofs += sizeof (struct inotify_event) + ev->len; 4575 ofs += sizeof (struct inotify_event) + ev->len;
3732 } 4576 }
3733} 4577}
3734 4578
3735inline_size void ecb_cold 4579inline_size ecb_cold
4580void
3736ev_check_2625 (EV_P) 4581ev_check_2625 (EV_P)
3737{ 4582{
3738 /* kernels < 2.6.25 are borked 4583 /* kernels < 2.6.25 are borked
3739 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4584 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3740 */ 4585 */
… …
3830#else 4675#else
3831# define EV_LSTAT(p,b) lstat (p, b) 4676# define EV_LSTAT(p,b) lstat (p, b)
3832#endif 4677#endif
3833 4678
3834void 4679void
3835ev_stat_stat (EV_P_ ev_stat *w) 4680ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3836{ 4681{
3837 if (lstat (w->path, &w->attr) < 0) 4682 if (lstat (w->path, &w->attr) < 0)
3838 w->attr.st_nlink = 0; 4683 w->attr.st_nlink = 0;
3839 else if (!w->attr.st_nlink) 4684 else if (!w->attr.st_nlink)
3840 w->attr.st_nlink = 1; 4685 w->attr.st_nlink = 1;
3841} 4686}
3842 4687
3843static void noinline 4688ecb_noinline
4689static void
3844stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4690stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3845{ 4691{
3846 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4692 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3847 4693
3848 ev_statdata prev = w->attr; 4694 ev_statdata prev = w->attr;
… …
3879 ev_feed_event (EV_A_ w, EV_STAT); 4725 ev_feed_event (EV_A_ w, EV_STAT);
3880 } 4726 }
3881} 4727}
3882 4728
3883void 4729void
3884ev_stat_start (EV_P_ ev_stat *w) 4730ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3885{ 4731{
3886 if (expect_false (ev_is_active (w))) 4732 if (ecb_expect_false (ev_is_active (w)))
3887 return; 4733 return;
3888 4734
3889 ev_stat_stat (EV_A_ w); 4735 ev_stat_stat (EV_A_ w);
3890 4736
3891 if (w->interval < MIN_STAT_INTERVAL && w->interval) 4737 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
3910 4756
3911 EV_FREQUENT_CHECK; 4757 EV_FREQUENT_CHECK;
3912} 4758}
3913 4759
3914void 4760void
3915ev_stat_stop (EV_P_ ev_stat *w) 4761ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3916{ 4762{
3917 clear_pending (EV_A_ (W)w); 4763 clear_pending (EV_A_ (W)w);
3918 if (expect_false (!ev_is_active (w))) 4764 if (ecb_expect_false (!ev_is_active (w)))
3919 return; 4765 return;
3920 4766
3921 EV_FREQUENT_CHECK; 4767 EV_FREQUENT_CHECK;
3922 4768
3923#if EV_USE_INOTIFY 4769#if EV_USE_INOTIFY
… …
3936} 4782}
3937#endif 4783#endif
3938 4784
3939#if EV_IDLE_ENABLE 4785#if EV_IDLE_ENABLE
3940void 4786void
3941ev_idle_start (EV_P_ ev_idle *w) 4787ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3942{ 4788{
3943 if (expect_false (ev_is_active (w))) 4789 if (ecb_expect_false (ev_is_active (w)))
3944 return; 4790 return;
3945 4791
3946 pri_adjust (EV_A_ (W)w); 4792 pri_adjust (EV_A_ (W)w);
3947 4793
3948 EV_FREQUENT_CHECK; 4794 EV_FREQUENT_CHECK;
… …
3951 int active = ++idlecnt [ABSPRI (w)]; 4797 int active = ++idlecnt [ABSPRI (w)];
3952 4798
3953 ++idleall; 4799 ++idleall;
3954 ev_start (EV_A_ (W)w, active); 4800 ev_start (EV_A_ (W)w, active);
3955 4801
3956 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4802 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
3957 idles [ABSPRI (w)][active - 1] = w; 4803 idles [ABSPRI (w)][active - 1] = w;
3958 } 4804 }
3959 4805
3960 EV_FREQUENT_CHECK; 4806 EV_FREQUENT_CHECK;
3961} 4807}
3962 4808
3963void 4809void
3964ev_idle_stop (EV_P_ ev_idle *w) 4810ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3965{ 4811{
3966 clear_pending (EV_A_ (W)w); 4812 clear_pending (EV_A_ (W)w);
3967 if (expect_false (!ev_is_active (w))) 4813 if (ecb_expect_false (!ev_is_active (w)))
3968 return; 4814 return;
3969 4815
3970 EV_FREQUENT_CHECK; 4816 EV_FREQUENT_CHECK;
3971 4817
3972 { 4818 {
… …
3983} 4829}
3984#endif 4830#endif
3985 4831
3986#if EV_PREPARE_ENABLE 4832#if EV_PREPARE_ENABLE
3987void 4833void
3988ev_prepare_start (EV_P_ ev_prepare *w) 4834ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3989{ 4835{
3990 if (expect_false (ev_is_active (w))) 4836 if (ecb_expect_false (ev_is_active (w)))
3991 return; 4837 return;
3992 4838
3993 EV_FREQUENT_CHECK; 4839 EV_FREQUENT_CHECK;
3994 4840
3995 ev_start (EV_A_ (W)w, ++preparecnt); 4841 ev_start (EV_A_ (W)w, ++preparecnt);
3996 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4842 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3997 prepares [preparecnt - 1] = w; 4843 prepares [preparecnt - 1] = w;
3998 4844
3999 EV_FREQUENT_CHECK; 4845 EV_FREQUENT_CHECK;
4000} 4846}
4001 4847
4002void 4848void
4003ev_prepare_stop (EV_P_ ev_prepare *w) 4849ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
4004{ 4850{
4005 clear_pending (EV_A_ (W)w); 4851 clear_pending (EV_A_ (W)w);
4006 if (expect_false (!ev_is_active (w))) 4852 if (ecb_expect_false (!ev_is_active (w)))
4007 return; 4853 return;
4008 4854
4009 EV_FREQUENT_CHECK; 4855 EV_FREQUENT_CHECK;
4010 4856
4011 { 4857 {
… …
4021} 4867}
4022#endif 4868#endif
4023 4869
4024#if EV_CHECK_ENABLE 4870#if EV_CHECK_ENABLE
4025void 4871void
4026ev_check_start (EV_P_ ev_check *w) 4872ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
4027{ 4873{
4028 if (expect_false (ev_is_active (w))) 4874 if (ecb_expect_false (ev_is_active (w)))
4029 return; 4875 return;
4030 4876
4031 EV_FREQUENT_CHECK; 4877 EV_FREQUENT_CHECK;
4032 4878
4033 ev_start (EV_A_ (W)w, ++checkcnt); 4879 ev_start (EV_A_ (W)w, ++checkcnt);
4034 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4880 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
4035 checks [checkcnt - 1] = w; 4881 checks [checkcnt - 1] = w;
4036 4882
4037 EV_FREQUENT_CHECK; 4883 EV_FREQUENT_CHECK;
4038} 4884}
4039 4885
4040void 4886void
4041ev_check_stop (EV_P_ ev_check *w) 4887ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
4042{ 4888{
4043 clear_pending (EV_A_ (W)w); 4889 clear_pending (EV_A_ (W)w);
4044 if (expect_false (!ev_is_active (w))) 4890 if (ecb_expect_false (!ev_is_active (w)))
4045 return; 4891 return;
4046 4892
4047 EV_FREQUENT_CHECK; 4893 EV_FREQUENT_CHECK;
4048 4894
4049 { 4895 {
… …
4058 EV_FREQUENT_CHECK; 4904 EV_FREQUENT_CHECK;
4059} 4905}
4060#endif 4906#endif
4061 4907
4062#if EV_EMBED_ENABLE 4908#if EV_EMBED_ENABLE
4063void noinline 4909ecb_noinline
4910void
4064ev_embed_sweep (EV_P_ ev_embed *w) 4911ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
4065{ 4912{
4066 ev_run (w->other, EVRUN_NOWAIT); 4913 ev_run (w->other, EVRUN_NOWAIT);
4067} 4914}
4068 4915
4069static void 4916static void
… …
4117 ev_idle_stop (EV_A_ idle); 4964 ev_idle_stop (EV_A_ idle);
4118} 4965}
4119#endif 4966#endif
4120 4967
4121void 4968void
4122ev_embed_start (EV_P_ ev_embed *w) 4969ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
4123{ 4970{
4124 if (expect_false (ev_is_active (w))) 4971 if (ecb_expect_false (ev_is_active (w)))
4125 return; 4972 return;
4126 4973
4127 { 4974 {
4128 EV_P = w->other; 4975 EV_P = w->other;
4129 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4976 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
… …
4148 4995
4149 EV_FREQUENT_CHECK; 4996 EV_FREQUENT_CHECK;
4150} 4997}
4151 4998
4152void 4999void
4153ev_embed_stop (EV_P_ ev_embed *w) 5000ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
4154{ 5001{
4155 clear_pending (EV_A_ (W)w); 5002 clear_pending (EV_A_ (W)w);
4156 if (expect_false (!ev_is_active (w))) 5003 if (ecb_expect_false (!ev_is_active (w)))
4157 return; 5004 return;
4158 5005
4159 EV_FREQUENT_CHECK; 5006 EV_FREQUENT_CHECK;
4160 5007
4161 ev_io_stop (EV_A_ &w->io); 5008 ev_io_stop (EV_A_ &w->io);
… …
4168} 5015}
4169#endif 5016#endif
4170 5017
4171#if EV_FORK_ENABLE 5018#if EV_FORK_ENABLE
4172void 5019void
4173ev_fork_start (EV_P_ ev_fork *w) 5020ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
4174{ 5021{
4175 if (expect_false (ev_is_active (w))) 5022 if (ecb_expect_false (ev_is_active (w)))
4176 return; 5023 return;
4177 5024
4178 EV_FREQUENT_CHECK; 5025 EV_FREQUENT_CHECK;
4179 5026
4180 ev_start (EV_A_ (W)w, ++forkcnt); 5027 ev_start (EV_A_ (W)w, ++forkcnt);
4181 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5028 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
4182 forks [forkcnt - 1] = w; 5029 forks [forkcnt - 1] = w;
4183 5030
4184 EV_FREQUENT_CHECK; 5031 EV_FREQUENT_CHECK;
4185} 5032}
4186 5033
4187void 5034void
4188ev_fork_stop (EV_P_ ev_fork *w) 5035ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
4189{ 5036{
4190 clear_pending (EV_A_ (W)w); 5037 clear_pending (EV_A_ (W)w);
4191 if (expect_false (!ev_is_active (w))) 5038 if (ecb_expect_false (!ev_is_active (w)))
4192 return; 5039 return;
4193 5040
4194 EV_FREQUENT_CHECK; 5041 EV_FREQUENT_CHECK;
4195 5042
4196 { 5043 {
… …
4206} 5053}
4207#endif 5054#endif
4208 5055
4209#if EV_CLEANUP_ENABLE 5056#if EV_CLEANUP_ENABLE
4210void 5057void
4211ev_cleanup_start (EV_P_ ev_cleanup *w) 5058ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4212{ 5059{
4213 if (expect_false (ev_is_active (w))) 5060 if (ecb_expect_false (ev_is_active (w)))
4214 return; 5061 return;
4215 5062
4216 EV_FREQUENT_CHECK; 5063 EV_FREQUENT_CHECK;
4217 5064
4218 ev_start (EV_A_ (W)w, ++cleanupcnt); 5065 ev_start (EV_A_ (W)w, ++cleanupcnt);
4219 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 5066 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
4220 cleanups [cleanupcnt - 1] = w; 5067 cleanups [cleanupcnt - 1] = w;
4221 5068
4222 /* cleanup watchers should never keep a refcount on the loop */ 5069 /* cleanup watchers should never keep a refcount on the loop */
4223 ev_unref (EV_A); 5070 ev_unref (EV_A);
4224 EV_FREQUENT_CHECK; 5071 EV_FREQUENT_CHECK;
4225} 5072}
4226 5073
4227void 5074void
4228ev_cleanup_stop (EV_P_ ev_cleanup *w) 5075ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4229{ 5076{
4230 clear_pending (EV_A_ (W)w); 5077 clear_pending (EV_A_ (W)w);
4231 if (expect_false (!ev_is_active (w))) 5078 if (ecb_expect_false (!ev_is_active (w)))
4232 return; 5079 return;
4233 5080
4234 EV_FREQUENT_CHECK; 5081 EV_FREQUENT_CHECK;
4235 ev_ref (EV_A); 5082 ev_ref (EV_A);
4236 5083
… …
4247} 5094}
4248#endif 5095#endif
4249 5096
4250#if EV_ASYNC_ENABLE 5097#if EV_ASYNC_ENABLE
4251void 5098void
4252ev_async_start (EV_P_ ev_async *w) 5099ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4253{ 5100{
4254 if (expect_false (ev_is_active (w))) 5101 if (ecb_expect_false (ev_is_active (w)))
4255 return; 5102 return;
4256 5103
4257 w->sent = 0; 5104 w->sent = 0;
4258 5105
4259 evpipe_init (EV_A); 5106 evpipe_init (EV_A);
4260 5107
4261 EV_FREQUENT_CHECK; 5108 EV_FREQUENT_CHECK;
4262 5109
4263 ev_start (EV_A_ (W)w, ++asynccnt); 5110 ev_start (EV_A_ (W)w, ++asynccnt);
4264 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5111 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
4265 asyncs [asynccnt - 1] = w; 5112 asyncs [asynccnt - 1] = w;
4266 5113
4267 EV_FREQUENT_CHECK; 5114 EV_FREQUENT_CHECK;
4268} 5115}
4269 5116
4270void 5117void
4271ev_async_stop (EV_P_ ev_async *w) 5118ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4272{ 5119{
4273 clear_pending (EV_A_ (W)w); 5120 clear_pending (EV_A_ (W)w);
4274 if (expect_false (!ev_is_active (w))) 5121 if (ecb_expect_false (!ev_is_active (w)))
4275 return; 5122 return;
4276 5123
4277 EV_FREQUENT_CHECK; 5124 EV_FREQUENT_CHECK;
4278 5125
4279 { 5126 {
… …
4287 5134
4288 EV_FREQUENT_CHECK; 5135 EV_FREQUENT_CHECK;
4289} 5136}
4290 5137
4291void 5138void
4292ev_async_send (EV_P_ ev_async *w) 5139ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
4293{ 5140{
4294 w->sent = 1; 5141 w->sent = 1;
4295 evpipe_write (EV_A_ &async_pending); 5142 evpipe_write (EV_A_ &async_pending);
4296} 5143}
4297#endif 5144#endif
… …
4334 5181
4335 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5182 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
4336} 5183}
4337 5184
4338void 5185void
4339ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5186ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
4340{ 5187{
4341 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5188 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
4342
4343 if (expect_false (!once))
4344 {
4345 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
4346 return;
4347 }
4348 5189
4349 once->cb = cb; 5190 once->cb = cb;
4350 once->arg = arg; 5191 once->arg = arg;
4351 5192
4352 ev_init (&once->io, once_cb_io); 5193 ev_init (&once->io, once_cb_io);
… …
4365} 5206}
4366 5207
4367/*****************************************************************************/ 5208/*****************************************************************************/
4368 5209
4369#if EV_WALK_ENABLE 5210#if EV_WALK_ENABLE
4370void ecb_cold 5211ecb_cold
5212void
4371ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5213ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
4372{ 5214{
4373 int i, j; 5215 int i, j;
4374 ev_watcher_list *wl, *wn; 5216 ev_watcher_list *wl, *wn;
4375 5217
4376 if (types & (EV_IO | EV_EMBED)) 5218 if (types & (EV_IO | EV_EMBED))

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