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Comparing libev/ev.c (file contents):
Revision 1.426 by root, Sun May 6 13:42:10 2012 UTC vs.
Revision 1.504 by root, Sun Jul 7 06:00:32 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
… …
354# define EV_USE_4HEAP EV_FEATURE_DATA 388# define EV_USE_4HEAP EV_FEATURE_DATA
355#endif 389#endif
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
393#endif
394
395#ifdef __ANDROID__
396/* supposedly, android doesn't typedef fd_mask */
397# undef EV_USE_SELECT
398# define EV_USE_SELECT 0
399/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
400# undef EV_USE_CLOCK_SYSCALL
401# define EV_USE_CLOCK_SYSCALL 0
402#endif
403
404/* aix's poll.h seems to cause lots of trouble */
405#ifdef _AIX
406/* AIX has a completely broken poll.h header */
407# undef EV_USE_POLL
408# define EV_USE_POLL 0
359#endif 409#endif
360 410
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 <sys/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) */
540
541/* find a portable timestamp that is "alawys" 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 large than 32 bit, but and maybe the unlikely loating point time_t */
544#define EV_TSTAMP_HUGE \
545 (sizeof (time_t) >= 8 ? 10000000000000. \
546 : 0 < (time_t)4294967295 ? 4294967295. \
547 : 2147483647.) \
474 548
475#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) 549#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) 550#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
477 551
478/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ 552/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
479/* ECB.H BEGIN */ 553/* ECB.H BEGIN */
480/* 554/*
481 * libecb - http://software.schmorp.de/pkg/libecb 555 * libecb - http://software.schmorp.de/pkg/libecb
482 * 556 *
483 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de> 557 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
484 * Copyright (©) 2011 Emanuele Giaquinta 558 * Copyright (©) 2011 Emanuele Giaquinta
485 * All rights reserved. 559 * All rights reserved.
486 * 560 *
487 * Redistribution and use in source and binary forms, with or without modifica- 561 * Redistribution and use in source and binary forms, with or without modifica-
488 * tion, are permitted provided that the following conditions are met: 562 * tion, are permitted provided that the following conditions are met:
… …
502 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 576 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
503 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 577 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
504 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- 578 * 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 579 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
506 * OF THE POSSIBILITY OF SUCH DAMAGE. 580 * OF THE POSSIBILITY OF SUCH DAMAGE.
581 *
582 * Alternatively, the contents of this file may be used under the terms of
583 * the GNU General Public License ("GPL") version 2 or any later version,
584 * in which case the provisions of the GPL are applicable instead of
585 * the above. If you wish to allow the use of your version of this file
586 * only under the terms of the GPL and not to allow others to use your
587 * version of this file under the BSD license, indicate your decision
588 * by deleting the provisions above and replace them with the notice
589 * and other provisions required by the GPL. If you do not delete the
590 * provisions above, a recipient may use your version of this file under
591 * either the BSD or the GPL.
507 */ 592 */
508 593
509#ifndef ECB_H 594#ifndef ECB_H
510#define ECB_H 595#define ECB_H
596
597/* 16 bits major, 16 bits minor */
598#define ECB_VERSION 0x00010006
511 599
512#ifdef _WIN32 600#ifdef _WIN32
513 typedef signed char int8_t; 601 typedef signed char int8_t;
514 typedef unsigned char uint8_t; 602 typedef unsigned char uint8_t;
515 typedef signed short int16_t; 603 typedef signed short int16_t;
… …
521 typedef unsigned long long uint64_t; 609 typedef unsigned long long uint64_t;
522 #else /* _MSC_VER || __BORLANDC__ */ 610 #else /* _MSC_VER || __BORLANDC__ */
523 typedef signed __int64 int64_t; 611 typedef signed __int64 int64_t;
524 typedef unsigned __int64 uint64_t; 612 typedef unsigned __int64 uint64_t;
525 #endif 613 #endif
614 #ifdef _WIN64
615 #define ECB_PTRSIZE 8
616 typedef uint64_t uintptr_t;
617 typedef int64_t intptr_t;
618 #else
619 #define ECB_PTRSIZE 4
620 typedef uint32_t uintptr_t;
621 typedef int32_t intptr_t;
622 #endif
526#else 623#else
527 #include <inttypes.h> 624 #include <inttypes.h>
625 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
626 #define ECB_PTRSIZE 8
627 #else
628 #define ECB_PTRSIZE 4
629 #endif
630#endif
631
632#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
633#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
634
635/* work around x32 idiocy by defining proper macros */
636#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
637 #if _ILP32
638 #define ECB_AMD64_X32 1
639 #else
640 #define ECB_AMD64 1
641 #endif
528#endif 642#endif
529 643
530/* many compilers define _GNUC_ to some versions but then only implement 644/* many compilers define _GNUC_ to some versions but then only implement
531 * what their idiot authors think are the "more important" extensions, 645 * what their idiot authors think are the "more important" extensions,
532 * causing enormous grief in return for some better fake benchmark numbers. 646 * causing enormous grief in return for some better fake benchmark numbers.
533 * or so. 647 * or so.
534 * we try to detect these and simply assume they are not gcc - if they have 648 * 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. 649 * an issue with that they should have done it right in the first place.
536 */ 650 */
537#ifndef ECB_GCC_VERSION
538 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__ 651#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
539 #define ECB_GCC_VERSION(major,minor) 0 652 #define ECB_GCC_VERSION(major,minor) 0
540 #else 653#else
541 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) 654 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
542 #endif 655#endif
656
657#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
658
659#if __clang__ && defined __has_builtin
660 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
661#else
662 #define ECB_CLANG_BUILTIN(x) 0
663#endif
664
665#if __clang__ && defined __has_extension
666 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
667#else
668 #define ECB_CLANG_EXTENSION(x) 0
669#endif
670
671#define ECB_CPP (__cplusplus+0)
672#define ECB_CPP11 (__cplusplus >= 201103L)
673#define ECB_CPP14 (__cplusplus >= 201402L)
674#define ECB_CPP17 (__cplusplus >= 201703L)
675
676#if ECB_CPP
677 #define ECB_C 0
678 #define ECB_STDC_VERSION 0
679#else
680 #define ECB_C 1
681 #define ECB_STDC_VERSION __STDC_VERSION__
682#endif
683
684#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
685#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
686#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
687
688#if ECB_CPP
689 #define ECB_EXTERN_C extern "C"
690 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
691 #define ECB_EXTERN_C_END }
692#else
693 #define ECB_EXTERN_C extern
694 #define ECB_EXTERN_C_BEG
695 #define ECB_EXTERN_C_END
543#endif 696#endif
544 697
545/*****************************************************************************/ 698/*****************************************************************************/
546 699
547/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ 700/* 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 */ 701/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
549 702
550#if ECB_NO_THREADS 703#if ECB_NO_THREADS
551# define ECB_NO_SMP 1 704 #define ECB_NO_SMP 1
552#endif 705#endif
553 706
554#if ECB_NO_THREADS || ECB_NO_SMP 707#if ECB_NO_SMP
555 #define ECB_MEMORY_FENCE do { } while (0) 708 #define ECB_MEMORY_FENCE do { } while (0)
709#endif
710
711/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
712#if __xlC__ && ECB_CPP
713 #include <builtins.h>
714#endif
715
716#if 1400 <= _MSC_VER
717 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
556#endif 718#endif
557 719
558#ifndef ECB_MEMORY_FENCE 720#ifndef ECB_MEMORY_FENCE
559 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 721 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
722 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
560 #if __i386 || __i386__ 723 #if __i386 || __i386__
561 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") 724 #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 */ 725 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
563 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */ 726 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
564 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__ 727 #elif ECB_GCC_AMD64
565 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 728 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
566 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory") 729 #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 */ 730 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
568 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 731 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
569 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 732 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
733 #elif defined __ARM_ARCH_2__ \
734 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
735 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
736 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
737 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
738 || defined __ARM_ARCH_5TEJ__
739 /* 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__ \ 740 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
571 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ 741 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
742 || defined __ARM_ARCH_6T2__
572 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") 743 #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__ \ 744 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
574 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__ 745 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
575 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") 746 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
576 #elif __sparc || __sparc__ 747 #elif __aarch64__
748 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
749 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
577 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad | " : : : "memory") 750 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
578 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") 751 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
579 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") 752 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
580 #elif defined __s390__ || defined __s390x__ 753 #elif defined __s390__ || defined __s390x__
581 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") 754 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
582 #elif defined __mips__ 755 #elif defined __mips__
756 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
757 /* 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") 758 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
584 #elif defined __alpha__ 759 #elif defined __alpha__
585 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory") 760 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
761 #elif defined __hppa__
762 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
763 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
764 #elif defined __ia64__
765 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
766 #elif defined __m68k__
767 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
768 #elif defined __m88k__
769 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
770 #elif defined __sh__
771 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
586 #endif 772 #endif
587 #endif 773 #endif
588#endif 774#endif
589 775
590#ifndef ECB_MEMORY_FENCE 776#ifndef ECB_MEMORY_FENCE
777 #if ECB_GCC_VERSION(4,7)
778 /* see comment below (stdatomic.h) about the C11 memory model. */
779 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
780 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
781 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
782 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
783
784 #elif ECB_CLANG_EXTENSION(c_atomic)
785 /* see comment below (stdatomic.h) about the C11 memory model. */
786 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
787 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
788 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
789 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
790
591 #if ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ 791 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
592 #define ECB_MEMORY_FENCE __sync_synchronize () 792 #define ECB_MEMORY_FENCE __sync_synchronize ()
593 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */ 793 #elif _MSC_VER >= 1500 /* VC++ 2008 */
594 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */ 794 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
795 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
796 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
797 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
798 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
595 #elif _MSC_VER >= 1400 /* VC++ 2005 */ 799 #elif _MSC_VER >= 1400 /* VC++ 2005 */
596 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) 800 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
597 #define ECB_MEMORY_FENCE _ReadWriteBarrier () 801 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
598 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ 802 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
599 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () 803 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
600 #elif defined _WIN32 804 #elif defined _WIN32
601 #include <WinNT.h> 805 #include <WinNT.h>
602 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ 806 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
603 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 807 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
604 #include <mbarrier.h> 808 #include <mbarrier.h>
605 #define ECB_MEMORY_FENCE __machine_rw_barrier () 809 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
606 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier () 810 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
607 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier () 811 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
812 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
608 #elif __xlC__ 813 #elif __xlC__
609 #define ECB_MEMORY_FENCE __sync () 814 #define ECB_MEMORY_FENCE __sync ()
815 #endif
816#endif
817
818#ifndef ECB_MEMORY_FENCE
819 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
820 /* we assume that these memory fences work on all variables/all memory accesses, */
821 /* not just C11 atomics and atomic accesses */
822 #include <stdatomic.h>
823 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
824 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
825 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
610 #endif 826 #endif
611#endif 827#endif
612 828
613#ifndef ECB_MEMORY_FENCE 829#ifndef ECB_MEMORY_FENCE
614 #if !ECB_AVOID_PTHREADS 830 #if !ECB_AVOID_PTHREADS
… …
634 850
635#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE 851#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
636 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 852 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
637#endif 853#endif
638 854
855#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
856 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
857#endif
858
639/*****************************************************************************/ 859/*****************************************************************************/
640 860
641#define ECB_C99 (__STDC_VERSION__ >= 199901L) 861#if ECB_CPP
642
643#if __cplusplus
644 #define ecb_inline static inline 862 #define ecb_inline static inline
645#elif ECB_GCC_VERSION(2,5) 863#elif ECB_GCC_VERSION(2,5)
646 #define ecb_inline static __inline__ 864 #define ecb_inline static __inline__
647#elif ECB_C99 865#elif ECB_C99
648 #define ecb_inline static inline 866 #define ecb_inline static inline
… …
662 880
663#define ECB_CONCAT_(a, b) a ## b 881#define ECB_CONCAT_(a, b) a ## b
664#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) 882#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
665#define ECB_STRINGIFY_(a) # a 883#define ECB_STRINGIFY_(a) # a
666#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) 884#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
885#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
667 886
668#define ecb_function_ ecb_inline 887#define ecb_function_ ecb_inline
669 888
670#if ECB_GCC_VERSION(3,1) 889#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
671 #define ecb_attribute(attrlist) __attribute__(attrlist) 890 #define ecb_attribute(attrlist) __attribute__ (attrlist)
891#else
892 #define ecb_attribute(attrlist)
893#endif
894
895#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
672 #define ecb_is_constant(expr) __builtin_constant_p (expr) 896 #define ecb_is_constant(expr) __builtin_constant_p (expr)
897#else
898 /* possible C11 impl for integral types
899 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
900 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
901
902 #define ecb_is_constant(expr) 0
903#endif
904
905#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
673 #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) 906 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
907#else
908 #define ecb_expect(expr,value) (expr)
909#endif
910
911#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
674 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) 912 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
675#else 913#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) 914 #define ecb_prefetch(addr,rw,locality)
680#endif 915#endif
681 916
682/* no emulation for ecb_decltype */ 917/* no emulation for ecb_decltype */
683#if ECB_GCC_VERSION(4,5) 918#if ECB_CPP11
919 // older implementations might have problems with decltype(x)::type, work around it
920 template<class T> struct ecb_decltype_t { typedef T type; };
684 #define ecb_decltype(x) __decltype(x) 921 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
685#elif ECB_GCC_VERSION(3,0) 922#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
686 #define ecb_decltype(x) __typeof(x) 923 #define ecb_decltype(x) __typeof__ (x)
687#endif 924#endif
688 925
926#if _MSC_VER >= 1300
927 #define ecb_deprecated __declspec (deprecated)
928#else
929 #define ecb_deprecated ecb_attribute ((__deprecated__))
930#endif
931
932#if _MSC_VER >= 1500
933 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
934#elif ECB_GCC_VERSION(4,5)
935 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
936#else
937 #define ecb_deprecated_message(msg) ecb_deprecated
938#endif
939
940#if _MSC_VER >= 1400
941 #define ecb_noinline __declspec (noinline)
942#else
689#define ecb_noinline ecb_attribute ((__noinline__)) 943 #define ecb_noinline ecb_attribute ((__noinline__))
690#define ecb_noreturn ecb_attribute ((__noreturn__)) 944#endif
945
691#define ecb_unused ecb_attribute ((__unused__)) 946#define ecb_unused ecb_attribute ((__unused__))
692#define ecb_const ecb_attribute ((__const__)) 947#define ecb_const ecb_attribute ((__const__))
693#define ecb_pure ecb_attribute ((__pure__)) 948#define ecb_pure ecb_attribute ((__pure__))
949
950#if ECB_C11 || __IBMC_NORETURN
951 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
952 #define ecb_noreturn _Noreturn
953#elif ECB_CPP11
954 #define ecb_noreturn [[noreturn]]
955#elif _MSC_VER >= 1200
956 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
957 #define ecb_noreturn __declspec (noreturn)
958#else
959 #define ecb_noreturn ecb_attribute ((__noreturn__))
960#endif
694 961
695#if ECB_GCC_VERSION(4,3) 962#if ECB_GCC_VERSION(4,3)
696 #define ecb_artificial ecb_attribute ((__artificial__)) 963 #define ecb_artificial ecb_attribute ((__artificial__))
697 #define ecb_hot ecb_attribute ((__hot__)) 964 #define ecb_hot ecb_attribute ((__hot__))
698 #define ecb_cold ecb_attribute ((__cold__)) 965 #define ecb_cold ecb_attribute ((__cold__))
… …
710/* for compatibility to the rest of the world */ 977/* for compatibility to the rest of the world */
711#define ecb_likely(expr) ecb_expect_true (expr) 978#define ecb_likely(expr) ecb_expect_true (expr)
712#define ecb_unlikely(expr) ecb_expect_false (expr) 979#define ecb_unlikely(expr) ecb_expect_false (expr)
713 980
714/* count trailing zero bits and count # of one bits */ 981/* count trailing zero bits and count # of one bits */
715#if ECB_GCC_VERSION(3,4) 982#if ECB_GCC_VERSION(3,4) \
983 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
984 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
985 && ECB_CLANG_BUILTIN(__builtin_popcount))
716 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */ 986 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
717 #define ecb_ld32(x) (__builtin_clz (x) ^ 31) 987 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
718 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) 988 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
719 #define ecb_ctz32(x) __builtin_ctz (x) 989 #define ecb_ctz32(x) __builtin_ctz (x)
720 #define ecb_ctz64(x) __builtin_ctzll (x) 990 #define ecb_ctz64(x) __builtin_ctzll (x)
721 #define ecb_popcount32(x) __builtin_popcount (x) 991 #define ecb_popcount32(x) __builtin_popcount (x)
722 /* no popcountll */ 992 /* no popcountll */
723#else 993#else
724 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; 994 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
725 ecb_function_ int 995 ecb_function_ ecb_const int
726 ecb_ctz32 (uint32_t x) 996 ecb_ctz32 (uint32_t x)
727 { 997 {
998#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
999 unsigned long r;
1000 _BitScanForward (&r, x);
1001 return (int)r;
1002#else
728 int r = 0; 1003 int r = 0;
729 1004
730 x &= ~x + 1; /* this isolates the lowest bit */ 1005 x &= ~x + 1; /* this isolates the lowest bit */
731 1006
732#if ECB_branchless_on_i386 1007#if ECB_branchless_on_i386
… …
742 if (x & 0xff00ff00) r += 8; 1017 if (x & 0xff00ff00) r += 8;
743 if (x & 0xffff0000) r += 16; 1018 if (x & 0xffff0000) r += 16;
744#endif 1019#endif
745 1020
746 return r; 1021 return r;
1022#endif
747 } 1023 }
748 1024
749 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; 1025 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
750 ecb_function_ int 1026 ecb_function_ ecb_const int
751 ecb_ctz64 (uint64_t x) 1027 ecb_ctz64 (uint64_t x)
752 { 1028 {
1029#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1030 unsigned long r;
1031 _BitScanForward64 (&r, x);
1032 return (int)r;
1033#else
753 int shift = x & 0xffffffffU ? 0 : 32; 1034 int shift = x & 0xffffffff ? 0 : 32;
754 return ecb_ctz32 (x >> shift) + shift; 1035 return ecb_ctz32 (x >> shift) + shift;
1036#endif
755 } 1037 }
756 1038
757 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; 1039 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
758 ecb_function_ int 1040 ecb_function_ ecb_const int
759 ecb_popcount32 (uint32_t x) 1041 ecb_popcount32 (uint32_t x)
760 { 1042 {
761 x -= (x >> 1) & 0x55555555; 1043 x -= (x >> 1) & 0x55555555;
762 x = ((x >> 2) & 0x33333333) + (x & 0x33333333); 1044 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
763 x = ((x >> 4) + x) & 0x0f0f0f0f; 1045 x = ((x >> 4) + x) & 0x0f0f0f0f;
764 x *= 0x01010101; 1046 x *= 0x01010101;
765 1047
766 return x >> 24; 1048 return x >> 24;
767 } 1049 }
768 1050
769 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; 1051 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
770 ecb_function_ int ecb_ld32 (uint32_t x) 1052 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
771 { 1053 {
1054#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1055 unsigned long r;
1056 _BitScanReverse (&r, x);
1057 return (int)r;
1058#else
772 int r = 0; 1059 int r = 0;
773 1060
774 if (x >> 16) { x >>= 16; r += 16; } 1061 if (x >> 16) { x >>= 16; r += 16; }
775 if (x >> 8) { x >>= 8; r += 8; } 1062 if (x >> 8) { x >>= 8; r += 8; }
776 if (x >> 4) { x >>= 4; r += 4; } 1063 if (x >> 4) { x >>= 4; r += 4; }
777 if (x >> 2) { x >>= 2; r += 2; } 1064 if (x >> 2) { x >>= 2; r += 2; }
778 if (x >> 1) { r += 1; } 1065 if (x >> 1) { r += 1; }
779 1066
780 return r; 1067 return r;
1068#endif
781 } 1069 }
782 1070
783 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; 1071 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
784 ecb_function_ int ecb_ld64 (uint64_t x) 1072 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
785 { 1073 {
1074#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1075 unsigned long r;
1076 _BitScanReverse64 (&r, x);
1077 return (int)r;
1078#else
786 int r = 0; 1079 int r = 0;
787 1080
788 if (x >> 32) { x >>= 32; r += 32; } 1081 if (x >> 32) { x >>= 32; r += 32; }
789 1082
790 return r + ecb_ld32 (x); 1083 return r + ecb_ld32 (x);
1084#endif
791 } 1085 }
792#endif 1086#endif
793 1087
1088ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1089ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1090ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1091ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1092
794ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const; 1093ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
795ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) 1094ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
796{ 1095{
797 return ( (x * 0x0802U & 0x22110U) 1096 return ( (x * 0x0802U & 0x22110U)
798 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; 1097 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
799} 1098}
800 1099
801ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const; 1100ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
802ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) 1101ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
803{ 1102{
804 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1); 1103 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
805 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2); 1104 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
806 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4); 1105 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
807 x = ( x >> 8 ) | ( x << 8); 1106 x = ( x >> 8 ) | ( x << 8);
808 1107
809 return x; 1108 return x;
810} 1109}
811 1110
812ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const; 1111ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
813ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) 1112ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
814{ 1113{
815 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1); 1114 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
816 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2); 1115 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
817 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4); 1116 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
818 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8); 1117 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
… …
821 return x; 1120 return x;
822} 1121}
823 1122
824/* popcount64 is only available on 64 bit cpus as gcc builtin */ 1123/* popcount64 is only available on 64 bit cpus as gcc builtin */
825/* so for this version we are lazy */ 1124/* so for this version we are lazy */
826ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 1125ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
827ecb_function_ int 1126ecb_function_ ecb_const int
828ecb_popcount64 (uint64_t x) 1127ecb_popcount64 (uint64_t x)
829{ 1128{
830 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); 1129 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
831} 1130}
832 1131
833ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const; 1132ecb_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; 1133ecb_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; 1134ecb_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; 1135ecb_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; 1136ecb_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; 1137ecb_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; 1138ecb_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; 1139ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
841 1140
842ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); } 1141ecb_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); } 1142ecb_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); } 1143ecb_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); } 1144ecb_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); } 1145ecb_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); } 1146ecb_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); } 1147ecb_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); } 1148ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
850 1149
851#if ECB_GCC_VERSION(4,3) 1150#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1151 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1152 #define ecb_bswap16(x) __builtin_bswap16 (x)
1153 #else
852 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 1154 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1155 #endif
853 #define ecb_bswap32(x) __builtin_bswap32 (x) 1156 #define ecb_bswap32(x) __builtin_bswap32 (x)
854 #define ecb_bswap64(x) __builtin_bswap64 (x) 1157 #define ecb_bswap64(x) __builtin_bswap64 (x)
1158#elif _MSC_VER
1159 #include <stdlib.h>
1160 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1161 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1162 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
855#else 1163#else
856 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; 1164 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
857 ecb_function_ uint16_t 1165 ecb_function_ ecb_const uint16_t
858 ecb_bswap16 (uint16_t x) 1166 ecb_bswap16 (uint16_t x)
859 { 1167 {
860 return ecb_rotl16 (x, 8); 1168 return ecb_rotl16 (x, 8);
861 } 1169 }
862 1170
863 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; 1171 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
864 ecb_function_ uint32_t 1172 ecb_function_ ecb_const uint32_t
865 ecb_bswap32 (uint32_t x) 1173 ecb_bswap32 (uint32_t x)
866 { 1174 {
867 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); 1175 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
868 } 1176 }
869 1177
870 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; 1178 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
871 ecb_function_ uint64_t 1179 ecb_function_ ecb_const uint64_t
872 ecb_bswap64 (uint64_t x) 1180 ecb_bswap64 (uint64_t x)
873 { 1181 {
874 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); 1182 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
875 } 1183 }
876#endif 1184#endif
877 1185
878#if ECB_GCC_VERSION(4,5) 1186#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
879 #define ecb_unreachable() __builtin_unreachable () 1187 #define ecb_unreachable() __builtin_unreachable ()
880#else 1188#else
881 /* this seems to work fine, but gcc always emits a warning for it :/ */ 1189 /* this seems to work fine, but gcc always emits a warning for it :/ */
882 ecb_inline void ecb_unreachable (void) ecb_noreturn; 1190 ecb_inline ecb_noreturn void ecb_unreachable (void);
883 ecb_inline void ecb_unreachable (void) { } 1191 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
884#endif 1192#endif
885 1193
886/* try to tell the compiler that some condition is definitely true */ 1194/* try to tell the compiler that some condition is definitely true */
887#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) 1195#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
888 1196
889ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const; 1197ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
890ecb_inline unsigned char 1198ecb_inline ecb_const uint32_t
891ecb_byteorder_helper (void) 1199ecb_byteorder_helper (void)
892{ 1200{
893 const uint32_t u = 0x11223344; 1201 /* the union code still generates code under pressure in gcc, */
894 return *(unsigned char *)&u; 1202 /* but less than using pointers, and always seems to */
1203 /* successfully return a constant. */
1204 /* the reason why we have this horrible preprocessor mess */
1205 /* is to avoid it in all cases, at least on common architectures */
1206 /* or when using a recent enough gcc version (>= 4.6) */
1207#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1208 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1209 #define ECB_LITTLE_ENDIAN 1
1210 return 0x44332211;
1211#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1212 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1213 #define ECB_BIG_ENDIAN 1
1214 return 0x11223344;
1215#else
1216 union
1217 {
1218 uint8_t c[4];
1219 uint32_t u;
1220 } u = { 0x11, 0x22, 0x33, 0x44 };
1221 return u.u;
1222#endif
895} 1223}
896 1224
897ecb_inline ecb_bool ecb_big_endian (void) ecb_const; 1225ecb_inline ecb_const ecb_bool ecb_big_endian (void);
898ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } 1226ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
899ecb_inline ecb_bool ecb_little_endian (void) ecb_const; 1227ecb_inline ecb_const ecb_bool ecb_little_endian (void);
900ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } 1228ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
901 1229
902#if ECB_GCC_VERSION(3,0) || ECB_C99 1230#if ECB_GCC_VERSION(3,0) || ECB_C99
903 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) 1231 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
904#else 1232#else
905 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) 1233 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
906#endif 1234#endif
907 1235
908#if __cplusplus 1236#if ECB_CPP
909 template<typename T> 1237 template<typename T>
910 static inline T ecb_div_rd (T val, T div) 1238 static inline T ecb_div_rd (T val, T div)
911 { 1239 {
912 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; 1240 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
913 } 1241 }
… …
930 } 1258 }
931#else 1259#else
932 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1260 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
933#endif 1261#endif
934 1262
1263ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1264ecb_function_ ecb_const uint32_t
1265ecb_binary16_to_binary32 (uint32_t x)
1266{
1267 unsigned int s = (x & 0x8000) << (31 - 15);
1268 int e = (x >> 10) & 0x001f;
1269 unsigned int m = x & 0x03ff;
1270
1271 if (ecb_expect_false (e == 31))
1272 /* infinity or NaN */
1273 e = 255 - (127 - 15);
1274 else if (ecb_expect_false (!e))
1275 {
1276 if (ecb_expect_true (!m))
1277 /* zero, handled by code below by forcing e to 0 */
1278 e = 0 - (127 - 15);
1279 else
1280 {
1281 /* subnormal, renormalise */
1282 unsigned int s = 10 - ecb_ld32 (m);
1283
1284 m = (m << s) & 0x3ff; /* mask implicit bit */
1285 e -= s - 1;
1286 }
1287 }
1288
1289 /* e and m now are normalised, or zero, (or inf or nan) */
1290 e += 127 - 15;
1291
1292 return s | (e << 23) | (m << (23 - 10));
1293}
1294
1295ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1296ecb_function_ ecb_const uint16_t
1297ecb_binary32_to_binary16 (uint32_t x)
1298{
1299 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1300 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1301 unsigned int m = x & 0x007fffff;
1302
1303 x &= 0x7fffffff;
1304
1305 /* if it's within range of binary16 normals, use fast path */
1306 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1307 {
1308 /* mantissa round-to-even */
1309 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1310
1311 /* handle overflow */
1312 if (ecb_expect_false (m >= 0x00800000))
1313 {
1314 m >>= 1;
1315 e += 1;
1316 }
1317
1318 return s | (e << 10) | (m >> (23 - 10));
1319 }
1320
1321 /* handle large numbers and infinity */
1322 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1323 return s | 0x7c00;
1324
1325 /* handle zero, subnormals and small numbers */
1326 if (ecb_expect_true (x < 0x38800000))
1327 {
1328 /* zero */
1329 if (ecb_expect_true (!x))
1330 return s;
1331
1332 /* handle subnormals */
1333
1334 /* too small, will be zero */
1335 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1336 return s;
1337
1338 m |= 0x00800000; /* make implicit bit explicit */
1339
1340 /* very tricky - we need to round to the nearest e (+10) bit value */
1341 {
1342 unsigned int bits = 14 - e;
1343 unsigned int half = (1 << (bits - 1)) - 1;
1344 unsigned int even = (m >> bits) & 1;
1345
1346 /* if this overflows, we will end up with a normalised number */
1347 m = (m + half + even) >> bits;
1348 }
1349
1350 return s | m;
1351 }
1352
1353 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1354 m >>= 13;
1355
1356 return s | 0x7c00 | m | !m;
1357}
1358
1359/*******************************************************************************/
1360/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1361
1362/* basically, everything uses "ieee pure-endian" floating point numbers */
1363/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1364#if 0 \
1365 || __i386 || __i386__ \
1366 || ECB_GCC_AMD64 \
1367 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1368 || defined __s390__ || defined __s390x__ \
1369 || defined __mips__ \
1370 || defined __alpha__ \
1371 || defined __hppa__ \
1372 || defined __ia64__ \
1373 || defined __m68k__ \
1374 || defined __m88k__ \
1375 || defined __sh__ \
1376 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1377 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1378 || defined __aarch64__
1379 #define ECB_STDFP 1
1380 #include <string.h> /* for memcpy */
1381#else
1382 #define ECB_STDFP 0
1383#endif
1384
1385#ifndef ECB_NO_LIBM
1386
1387 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1388
1389 /* only the oldest of old doesn't have this one. solaris. */
1390 #ifdef INFINITY
1391 #define ECB_INFINITY INFINITY
1392 #else
1393 #define ECB_INFINITY HUGE_VAL
1394 #endif
1395
1396 #ifdef NAN
1397 #define ECB_NAN NAN
1398 #else
1399 #define ECB_NAN ECB_INFINITY
1400 #endif
1401
1402 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1403 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1404 #define ecb_frexpf(x,e) frexpf ((x), (e))
1405 #else
1406 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1407 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1408 #endif
1409
1410 /* convert a float to ieee single/binary32 */
1411 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1412 ecb_function_ ecb_const uint32_t
1413 ecb_float_to_binary32 (float x)
1414 {
1415 uint32_t r;
1416
1417 #if ECB_STDFP
1418 memcpy (&r, &x, 4);
1419 #else
1420 /* slow emulation, works for anything but -0 */
1421 uint32_t m;
1422 int e;
1423
1424 if (x == 0e0f ) return 0x00000000U;
1425 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1426 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1427 if (x != x ) return 0x7fbfffffU;
1428
1429 m = ecb_frexpf (x, &e) * 0x1000000U;
1430
1431 r = m & 0x80000000U;
1432
1433 if (r)
1434 m = -m;
1435
1436 if (e <= -126)
1437 {
1438 m &= 0xffffffU;
1439 m >>= (-125 - e);
1440 e = -126;
1441 }
1442
1443 r |= (e + 126) << 23;
1444 r |= m & 0x7fffffU;
1445 #endif
1446
1447 return r;
1448 }
1449
1450 /* converts an ieee single/binary32 to a float */
1451 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1452 ecb_function_ ecb_const float
1453 ecb_binary32_to_float (uint32_t x)
1454 {
1455 float r;
1456
1457 #if ECB_STDFP
1458 memcpy (&r, &x, 4);
1459 #else
1460 /* emulation, only works for normals and subnormals and +0 */
1461 int neg = x >> 31;
1462 int e = (x >> 23) & 0xffU;
1463
1464 x &= 0x7fffffU;
1465
1466 if (e)
1467 x |= 0x800000U;
1468 else
1469 e = 1;
1470
1471 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1472 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1473
1474 r = neg ? -r : r;
1475 #endif
1476
1477 return r;
1478 }
1479
1480 /* convert a double to ieee double/binary64 */
1481 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1482 ecb_function_ ecb_const uint64_t
1483 ecb_double_to_binary64 (double x)
1484 {
1485 uint64_t r;
1486
1487 #if ECB_STDFP
1488 memcpy (&r, &x, 8);
1489 #else
1490 /* slow emulation, works for anything but -0 */
1491 uint64_t m;
1492 int e;
1493
1494 if (x == 0e0 ) return 0x0000000000000000U;
1495 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1496 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1497 if (x != x ) return 0X7ff7ffffffffffffU;
1498
1499 m = frexp (x, &e) * 0x20000000000000U;
1500
1501 r = m & 0x8000000000000000;;
1502
1503 if (r)
1504 m = -m;
1505
1506 if (e <= -1022)
1507 {
1508 m &= 0x1fffffffffffffU;
1509 m >>= (-1021 - e);
1510 e = -1022;
1511 }
1512
1513 r |= ((uint64_t)(e + 1022)) << 52;
1514 r |= m & 0xfffffffffffffU;
1515 #endif
1516
1517 return r;
1518 }
1519
1520 /* converts an ieee double/binary64 to a double */
1521 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1522 ecb_function_ ecb_const double
1523 ecb_binary64_to_double (uint64_t x)
1524 {
1525 double r;
1526
1527 #if ECB_STDFP
1528 memcpy (&r, &x, 8);
1529 #else
1530 /* emulation, only works for normals and subnormals and +0 */
1531 int neg = x >> 63;
1532 int e = (x >> 52) & 0x7ffU;
1533
1534 x &= 0xfffffffffffffU;
1535
1536 if (e)
1537 x |= 0x10000000000000U;
1538 else
1539 e = 1;
1540
1541 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1542 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1543
1544 r = neg ? -r : r;
1545 #endif
1546
1547 return r;
1548 }
1549
1550 /* convert a float to ieee half/binary16 */
1551 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1552 ecb_function_ ecb_const uint16_t
1553 ecb_float_to_binary16 (float x)
1554 {
1555 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1556 }
1557
1558 /* convert an ieee half/binary16 to float */
1559 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1560 ecb_function_ ecb_const float
1561 ecb_binary16_to_float (uint16_t x)
1562 {
1563 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1564 }
1565
1566#endif
1567
935#endif 1568#endif
936 1569
937/* ECB.H END */ 1570/* ECB.H END */
938 1571
939#if ECB_MEMORY_FENCE_NEEDS_PTHREADS 1572#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
940/* if your architecture doesn't need memory fences, e.g. because it is 1573/* 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 1574 * 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 1575 * from multiple threads, then you can define ECB_NO_THREADS when compiling
943 * libev, in which cases the memory fences become nops. 1576 * libev, in which cases the memory fences become nops.
944 * alternatively, you can remove this #error and link against libpthread, 1577 * alternatively, you can remove this #error and link against libpthread,
945 * which will then provide the memory fences. 1578 * which will then provide the memory fences.
946 */ 1579 */
947# error "memory fences not defined for your architecture, please report" 1580# error "memory fences not defined for your architecture, please report"
… …
951# define ECB_MEMORY_FENCE do { } while (0) 1584# define ECB_MEMORY_FENCE do { } while (0)
952# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 1585# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
953# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 1586# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
954#endif 1587#endif
955 1588
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 1589#define inline_size ecb_inline
961 1590
962#if EV_FEATURE_CODE 1591#if EV_FEATURE_CODE
963# define inline_speed ecb_inline 1592# define inline_speed ecb_inline
964#else 1593#else
965# define inline_speed static noinline 1594# define inline_speed ecb_noinline static
966#endif 1595#endif
1596
1597/*****************************************************************************/
1598/* raw syscall wrappers */
1599
1600#if EV_NEED_SYSCALL
1601
1602#include <sys/syscall.h>
1603
1604/*
1605 * define some syscall wrappers for common architectures
1606 * this is mostly for nice looks during debugging, not performance.
1607 * our syscalls return < 0, not == -1, on error. which is good
1608 * enough for linux aio.
1609 * TODO: arm is also common nowadays, maybe even mips and x86
1610 * TODO: after implementing this, it suddenly looks like overkill, but its hard to remove...
1611 */
1612#if __GNUC__ && __linux && ECB_AMD64 && !defined __OPTIMIZE_SIZE__
1613 /* the costly errno access probably kills this for size optimisation */
1614
1615 #define ev_syscall(nr,narg,arg1,arg2,arg3,arg4,arg5,arg6) \
1616 ({ \
1617 long res; \
1618 register unsigned long r6 __asm__ ("r9" ); \
1619 register unsigned long r5 __asm__ ("r8" ); \
1620 register unsigned long r4 __asm__ ("r10"); \
1621 register unsigned long r3 __asm__ ("rdx"); \
1622 register unsigned long r2 __asm__ ("rsi"); \
1623 register unsigned long r1 __asm__ ("rdi"); \
1624 if (narg >= 6) r6 = (unsigned long)(arg6); \
1625 if (narg >= 5) r5 = (unsigned long)(arg5); \
1626 if (narg >= 4) r4 = (unsigned long)(arg4); \
1627 if (narg >= 3) r3 = (unsigned long)(arg3); \
1628 if (narg >= 2) r2 = (unsigned long)(arg2); \
1629 if (narg >= 1) r1 = (unsigned long)(arg1); \
1630 __asm__ __volatile__ ( \
1631 "syscall\n\t" \
1632 : "=a" (res) \
1633 : "0" (nr), "r" (r1), "r" (r2), "r" (r3), "r" (r4), "r" (r5) \
1634 : "cc", "r11", "cx", "memory"); \
1635 errno = -res; \
1636 res; \
1637 })
1638
1639#endif
1640
1641#ifdef ev_syscall
1642 #define ev_syscall0(nr) ev_syscall (nr, 0, 0, 0, 0, 0, 0, 0)
1643 #define ev_syscall1(nr,arg1) ev_syscall (nr, 1, arg1, 0, 0, 0, 0, 0)
1644 #define ev_syscall2(nr,arg1,arg2) ev_syscall (nr, 2, arg1, arg2, 0, 0, 0, 0)
1645 #define ev_syscall3(nr,arg1,arg2,arg3) ev_syscall (nr, 3, arg1, arg2, arg3, 0, 0, 0)
1646 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) ev_syscall (nr, 3, arg1, arg2, arg3, arg4, 0, 0)
1647 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) ev_syscall (nr, 5, arg1, arg2, arg3, arg4, arg5, 0)
1648 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) ev_syscall (nr, 6, arg1, arg2, arg3, arg4, arg5,arg6)
1649#else
1650 #define ev_syscall0(nr) syscall (nr)
1651 #define ev_syscall1(nr,arg1) syscall (nr, arg1)
1652 #define ev_syscall2(nr,arg1,arg2) syscall (nr, arg1, arg2)
1653 #define ev_syscall3(nr,arg1,arg2,arg3) syscall (nr, arg1, arg2, arg3)
1654 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) syscall (nr, arg1, arg2, arg3, arg4)
1655 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) syscall (nr, arg1, arg2, arg3, arg4, arg5)
1656 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) syscall (nr, arg1, arg2, arg3, arg4, arg5,arg6)
1657#endif
1658
1659#endif
1660
1661/*****************************************************************************/
967 1662
968#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1663#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
969 1664
970#if EV_MINPRI == EV_MAXPRI 1665#if EV_MINPRI == EV_MAXPRI
971# define ABSPRI(w) (((W)w), 0) 1666# define ABSPRI(w) (((W)w), 0)
972#else 1667#else
973# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1668# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
974#endif 1669#endif
975 1670
976#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1671#define EMPTY /* required for microsofts broken pseudo-c compiler */
977#define EMPTY2(a,b) /* used to suppress some warnings */
978 1672
979typedef ev_watcher *W; 1673typedef ev_watcher *W;
980typedef ev_watcher_list *WL; 1674typedef ev_watcher_list *WL;
981typedef ev_watcher_time *WT; 1675typedef ev_watcher_time *WT;
982 1676
… …
1007# include "ev_win32.c" 1701# include "ev_win32.c"
1008#endif 1702#endif
1009 1703
1010/*****************************************************************************/ 1704/*****************************************************************************/
1011 1705
1706#if EV_USE_LINUXAIO
1707# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1708#endif
1709
1012/* define a suitable floor function (only used by periodics atm) */ 1710/* define a suitable floor function (only used by periodics atm) */
1013 1711
1014#if EV_USE_FLOOR 1712#if EV_USE_FLOOR
1015# include <math.h> 1713# include <math.h>
1016# define ev_floor(v) floor (v) 1714# define ev_floor(v) floor (v)
1017#else 1715#else
1018 1716
1019#include <float.h> 1717#include <float.h>
1020 1718
1021/* a floor() replacement function, should be independent of ev_tstamp type */ 1719/* a floor() replacement function, should be independent of ev_tstamp type */
1720ecb_noinline
1022static ev_tstamp noinline 1721static ev_tstamp
1023ev_floor (ev_tstamp v) 1722ev_floor (ev_tstamp v)
1024{ 1723{
1025 /* the choice of shift factor is not terribly important */ 1724 /* the choice of shift factor is not terribly important */
1026#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1725#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1027 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1726 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1028#else 1727#else
1029 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; 1728 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1030#endif 1729#endif
1031 1730
1731 /* special treatment for negative arguments */
1732 if (ecb_expect_false (v < 0.))
1733 {
1734 ev_tstamp f = -ev_floor (-v);
1735
1736 return f - (f == v ? 0 : 1);
1737 }
1738
1032 /* argument too large for an unsigned long? */ 1739 /* argument too large for an unsigned long? then reduce it */
1033 if (expect_false (v >= shift)) 1740 if (ecb_expect_false (v >= shift))
1034 { 1741 {
1035 ev_tstamp f; 1742 ev_tstamp f;
1036 1743
1037 if (v == v - 1.) 1744 if (v == v - 1.)
1038 return v; /* very large number */ 1745 return v; /* very large numbers are assumed to be integer */
1039 1746
1040 f = shift * ev_floor (v * (1. / shift)); 1747 f = shift * ev_floor (v * (1. / shift));
1041 return f + ev_floor (v - f); 1748 return f + ev_floor (v - f);
1042 } 1749 }
1043 1750
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 */ 1751 /* fits into an unsigned long */
1053 return (unsigned long)v; 1752 return (unsigned long)v;
1054} 1753}
1055 1754
1056#endif 1755#endif
… …
1059 1758
1060#ifdef __linux 1759#ifdef __linux
1061# include <sys/utsname.h> 1760# include <sys/utsname.h>
1062#endif 1761#endif
1063 1762
1064static unsigned int noinline ecb_cold 1763ecb_noinline ecb_cold
1764static unsigned int
1065ev_linux_version (void) 1765ev_linux_version (void)
1066{ 1766{
1067#ifdef __linux 1767#ifdef __linux
1068 unsigned int v = 0; 1768 unsigned int v = 0;
1069 struct utsname buf; 1769 struct utsname buf;
… …
1098} 1798}
1099 1799
1100/*****************************************************************************/ 1800/*****************************************************************************/
1101 1801
1102#if EV_AVOID_STDIO 1802#if EV_AVOID_STDIO
1103static void noinline ecb_cold 1803ecb_noinline ecb_cold
1804static void
1104ev_printerr (const char *msg) 1805ev_printerr (const char *msg)
1105{ 1806{
1106 write (STDERR_FILENO, msg, strlen (msg)); 1807 write (STDERR_FILENO, msg, strlen (msg));
1107} 1808}
1108#endif 1809#endif
1109 1810
1110static void (*syserr_cb)(const char *msg) EV_THROW; 1811static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
1111 1812
1112void ecb_cold 1813ecb_cold
1814void
1113ev_set_syserr_cb (void (*cb)(const char *msg)) EV_THROW 1815ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
1114{ 1816{
1115 syserr_cb = cb; 1817 syserr_cb = cb;
1116} 1818}
1117 1819
1118static void noinline ecb_cold 1820ecb_noinline ecb_cold
1821static void
1119ev_syserr (const char *msg) 1822ev_syserr (const char *msg)
1120{ 1823{
1121 if (!msg) 1824 if (!msg)
1122 msg = "(libev) system error"; 1825 msg = "(libev) system error";
1123 1826
… …
1136 abort (); 1839 abort ();
1137 } 1840 }
1138} 1841}
1139 1842
1140static void * 1843static void *
1141ev_realloc_emul (void *ptr, long size) 1844ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
1142{ 1845{
1143#if __GLIBC__
1144 return realloc (ptr, size);
1145#else
1146 /* some systems, notably openbsd and darwin, fail to properly 1846 /* some systems, notably openbsd and darwin, fail to properly
1147 * implement realloc (x, 0) (as required by both ansi c-89 and 1847 * implement realloc (x, 0) (as required by both ansi c-89 and
1148 * the single unix specification, so work around them here. 1848 * the single unix specification, so work around them here.
1849 * recently, also (at least) fedora and debian started breaking it,
1850 * despite documenting it otherwise.
1149 */ 1851 */
1150 1852
1151 if (size) 1853 if (size)
1152 return realloc (ptr, size); 1854 return realloc (ptr, size);
1153 1855
1154 free (ptr); 1856 free (ptr);
1155 return 0; 1857 return 0;
1156#endif
1157} 1858}
1158 1859
1159static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul; 1860static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
1160 1861
1161void ecb_cold 1862ecb_cold
1863void
1162ev_set_allocator (void *(*cb)(void *ptr, long size)) EV_THROW 1864ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
1163{ 1865{
1164 alloc = cb; 1866 alloc = cb;
1165} 1867}
1166 1868
1167inline_speed void * 1869inline_speed void *
… …
1194typedef struct 1896typedef struct
1195{ 1897{
1196 WL head; 1898 WL head;
1197 unsigned char events; /* the events watched for */ 1899 unsigned char events; /* the events watched for */
1198 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 1900 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 */ 1901 unsigned char emask; /* some backends store the actual kernel mask in here */
1200 unsigned char unused; 1902 unsigned char eflags; /* flags field for use by backends */
1201#if EV_USE_EPOLL 1903#if EV_USE_EPOLL
1202 unsigned int egen; /* generation counter to counter epoll bugs */ 1904 unsigned int egen; /* generation counter to counter epoll bugs */
1203#endif 1905#endif
1204#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 1906#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1205 SOCKET handle; 1907 SOCKET handle;
… …
1269 static int ev_default_loop_ptr; 1971 static int ev_default_loop_ptr;
1270 1972
1271#endif 1973#endif
1272 1974
1273#if EV_FEATURE_API 1975#if EV_FEATURE_API
1274# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1976# 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) 1977# define EV_ACQUIRE_CB if (ecb_expect_false (acquire_cb)) acquire_cb (EV_A)
1276# define EV_INVOKE_PENDING invoke_cb (EV_A) 1978# define EV_INVOKE_PENDING invoke_cb (EV_A)
1277#else 1979#else
1278# define EV_RELEASE_CB (void)0 1980# define EV_RELEASE_CB (void)0
1279# define EV_ACQUIRE_CB (void)0 1981# define EV_ACQUIRE_CB (void)0
1280# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1982# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
… …
1284 1986
1285/*****************************************************************************/ 1987/*****************************************************************************/
1286 1988
1287#ifndef EV_HAVE_EV_TIME 1989#ifndef EV_HAVE_EV_TIME
1288ev_tstamp 1990ev_tstamp
1289ev_time (void) EV_THROW 1991ev_time (void) EV_NOEXCEPT
1290{ 1992{
1291#if EV_USE_REALTIME 1993#if EV_USE_REALTIME
1292 if (expect_true (have_realtime)) 1994 if (ecb_expect_true (have_realtime))
1293 { 1995 {
1294 struct timespec ts; 1996 struct timespec ts;
1295 clock_gettime (CLOCK_REALTIME, &ts); 1997 clock_gettime (CLOCK_REALTIME, &ts);
1296 return ts.tv_sec + ts.tv_nsec * 1e-9; 1998 return ts.tv_sec + ts.tv_nsec * 1e-9;
1297 } 1999 }
… …
1305 2007
1306inline_size ev_tstamp 2008inline_size ev_tstamp
1307get_clock (void) 2009get_clock (void)
1308{ 2010{
1309#if EV_USE_MONOTONIC 2011#if EV_USE_MONOTONIC
1310 if (expect_true (have_monotonic)) 2012 if (ecb_expect_true (have_monotonic))
1311 { 2013 {
1312 struct timespec ts; 2014 struct timespec ts;
1313 clock_gettime (CLOCK_MONOTONIC, &ts); 2015 clock_gettime (CLOCK_MONOTONIC, &ts);
1314 return ts.tv_sec + ts.tv_nsec * 1e-9; 2016 return ts.tv_sec + ts.tv_nsec * 1e-9;
1315 } 2017 }
… …
1318 return ev_time (); 2020 return ev_time ();
1319} 2021}
1320 2022
1321#if EV_MULTIPLICITY 2023#if EV_MULTIPLICITY
1322ev_tstamp 2024ev_tstamp
1323ev_now (EV_P) EV_THROW 2025ev_now (EV_P) EV_NOEXCEPT
1324{ 2026{
1325 return ev_rt_now; 2027 return ev_rt_now;
1326} 2028}
1327#endif 2029#endif
1328 2030
1329void 2031void
1330ev_sleep (ev_tstamp delay) EV_THROW 2032ev_sleep (ev_tstamp delay) EV_NOEXCEPT
1331{ 2033{
1332 if (delay > 0.) 2034 if (delay > 0.)
1333 { 2035 {
1334#if EV_USE_NANOSLEEP 2036#if EV_USE_NANOSLEEP
1335 struct timespec ts; 2037 struct timespec ts;
1336 2038
1337 EV_TS_SET (ts, delay); 2039 EV_TS_SET (ts, delay);
1338 nanosleep (&ts, 0); 2040 nanosleep (&ts, 0);
1339#elif defined _WIN32 2041#elif defined _WIN32
2042 /* maybe this should round up, as ms is very low resolution */
2043 /* compared to select (µs) or nanosleep (ns) */
1340 Sleep ((unsigned long)(delay * 1e3)); 2044 Sleep ((unsigned long)(delay * 1e3));
1341#else 2045#else
1342 struct timeval tv; 2046 struct timeval tv;
1343 2047
1344 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 2048 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
… …
1375 } 2079 }
1376 2080
1377 return ncur; 2081 return ncur;
1378} 2082}
1379 2083
1380static void * noinline ecb_cold 2084ecb_noinline ecb_cold
2085static void *
1381array_realloc (int elem, void *base, int *cur, int cnt) 2086array_realloc (int elem, void *base, int *cur, int cnt)
1382{ 2087{
1383 *cur = array_nextsize (elem, *cur, cnt); 2088 *cur = array_nextsize (elem, *cur, cnt);
1384 return ev_realloc (base, elem * *cur); 2089 return ev_realloc (base, elem * *cur);
1385} 2090}
1386 2091
2092#define array_needsize_noinit(base,offset,count)
2093
1387#define array_init_zero(base,count) \ 2094#define array_needsize_zerofill(base,offset,count) \
1388 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2095 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
1389 2096
1390#define array_needsize(type,base,cur,cnt,init) \ 2097#define array_needsize(type,base,cur,cnt,init) \
1391 if (expect_false ((cnt) > (cur))) \ 2098 if (ecb_expect_false ((cnt) > (cur))) \
1392 { \ 2099 { \
1393 int ecb_unused ocur_ = (cur); \ 2100 ecb_unused int ocur_ = (cur); \
1394 (base) = (type *)array_realloc \ 2101 (base) = (type *)array_realloc \
1395 (sizeof (type), (base), &(cur), (cnt)); \ 2102 (sizeof (type), (base), &(cur), (cnt)); \
1396 init ((base) + (ocur_), (cur) - ocur_); \ 2103 init ((base), ocur_, ((cur) - ocur_)); \
1397 } 2104 }
1398 2105
1399#if 0 2106#if 0
1400#define array_slim(type,stem) \ 2107#define array_slim(type,stem) \
1401 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2108 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 2117 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
1411 2118
1412/*****************************************************************************/ 2119/*****************************************************************************/
1413 2120
1414/* dummy callback for pending events */ 2121/* dummy callback for pending events */
1415static void noinline 2122ecb_noinline
2123static void
1416pendingcb (EV_P_ ev_prepare *w, int revents) 2124pendingcb (EV_P_ ev_prepare *w, int revents)
1417{ 2125{
1418} 2126}
1419 2127
1420void noinline 2128ecb_noinline
2129void
1421ev_feed_event (EV_P_ void *w, int revents) EV_THROW 2130ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
1422{ 2131{
1423 W w_ = (W)w; 2132 W w_ = (W)w;
1424 int pri = ABSPRI (w_); 2133 int pri = ABSPRI (w_);
1425 2134
1426 if (expect_false (w_->pending)) 2135 if (ecb_expect_false (w_->pending))
1427 pendings [pri][w_->pending - 1].events |= revents; 2136 pendings [pri][w_->pending - 1].events |= revents;
1428 else 2137 else
1429 { 2138 {
1430 w_->pending = ++pendingcnt [pri]; 2139 w_->pending = ++pendingcnt [pri];
1431 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2140 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
1432 pendings [pri][w_->pending - 1].w = w_; 2141 pendings [pri][w_->pending - 1].w = w_;
1433 pendings [pri][w_->pending - 1].events = revents; 2142 pendings [pri][w_->pending - 1].events = revents;
1434 } 2143 }
1435 2144
1436 pendingpri = NUMPRI - 1; 2145 pendingpri = NUMPRI - 1;
1437} 2146}
1438 2147
1439inline_speed void 2148inline_speed void
1440feed_reverse (EV_P_ W w) 2149feed_reverse (EV_P_ W w)
1441{ 2150{
1442 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2151 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
1443 rfeeds [rfeedcnt++] = w; 2152 rfeeds [rfeedcnt++] = w;
1444} 2153}
1445 2154
1446inline_size void 2155inline_size void
1447feed_reverse_done (EV_P_ int revents) 2156feed_reverse_done (EV_P_ int revents)
… …
1482inline_speed void 2191inline_speed void
1483fd_event (EV_P_ int fd, int revents) 2192fd_event (EV_P_ int fd, int revents)
1484{ 2193{
1485 ANFD *anfd = anfds + fd; 2194 ANFD *anfd = anfds + fd;
1486 2195
1487 if (expect_true (!anfd->reify)) 2196 if (ecb_expect_true (!anfd->reify))
1488 fd_event_nocheck (EV_A_ fd, revents); 2197 fd_event_nocheck (EV_A_ fd, revents);
1489} 2198}
1490 2199
1491void 2200void
1492ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW 2201ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
1493{ 2202{
1494 if (fd >= 0 && fd < anfdmax) 2203 if (fd >= 0 && fd < anfdmax)
1495 fd_event_nocheck (EV_A_ fd, revents); 2204 fd_event_nocheck (EV_A_ fd, revents);
1496} 2205}
1497 2206
… …
1534 ev_io *w; 2243 ev_io *w;
1535 2244
1536 unsigned char o_events = anfd->events; 2245 unsigned char o_events = anfd->events;
1537 unsigned char o_reify = anfd->reify; 2246 unsigned char o_reify = anfd->reify;
1538 2247
1539 anfd->reify = 0; 2248 anfd->reify = 0;
1540 2249
1541 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 2250 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
1542 { 2251 {
1543 anfd->events = 0; 2252 anfd->events = 0;
1544 2253
1545 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2254 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1546 anfd->events |= (unsigned char)w->events; 2255 anfd->events |= (unsigned char)w->events;
… …
1555 2264
1556 fdchangecnt = 0; 2265 fdchangecnt = 0;
1557} 2266}
1558 2267
1559/* something about the given fd changed */ 2268/* something about the given fd changed */
1560inline_size void 2269inline_size
2270void
1561fd_change (EV_P_ int fd, int flags) 2271fd_change (EV_P_ int fd, int flags)
1562{ 2272{
1563 unsigned char reify = anfds [fd].reify; 2273 unsigned char reify = anfds [fd].reify;
1564 anfds [fd].reify |= flags; 2274 anfds [fd].reify |= flags;
1565 2275
1566 if (expect_true (!reify)) 2276 if (ecb_expect_true (!reify))
1567 { 2277 {
1568 ++fdchangecnt; 2278 ++fdchangecnt;
1569 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2279 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
1570 fdchanges [fdchangecnt - 1] = fd; 2280 fdchanges [fdchangecnt - 1] = fd;
1571 } 2281 }
1572} 2282}
1573 2283
1574/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2284/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1575inline_speed void ecb_cold 2285inline_speed ecb_cold void
1576fd_kill (EV_P_ int fd) 2286fd_kill (EV_P_ int fd)
1577{ 2287{
1578 ev_io *w; 2288 ev_io *w;
1579 2289
1580 while ((w = (ev_io *)anfds [fd].head)) 2290 while ((w = (ev_io *)anfds [fd].head))
… …
1583 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2293 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1584 } 2294 }
1585} 2295}
1586 2296
1587/* check whether the given fd is actually valid, for error recovery */ 2297/* check whether the given fd is actually valid, for error recovery */
1588inline_size int ecb_cold 2298inline_size ecb_cold int
1589fd_valid (int fd) 2299fd_valid (int fd)
1590{ 2300{
1591#ifdef _WIN32 2301#ifdef _WIN32
1592 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2302 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1593#else 2303#else
1594 return fcntl (fd, F_GETFD) != -1; 2304 return fcntl (fd, F_GETFD) != -1;
1595#endif 2305#endif
1596} 2306}
1597 2307
1598/* called on EBADF to verify fds */ 2308/* called on EBADF to verify fds */
1599static void noinline ecb_cold 2309ecb_noinline ecb_cold
2310static void
1600fd_ebadf (EV_P) 2311fd_ebadf (EV_P)
1601{ 2312{
1602 int fd; 2313 int fd;
1603 2314
1604 for (fd = 0; fd < anfdmax; ++fd) 2315 for (fd = 0; fd < anfdmax; ++fd)
… …
1606 if (!fd_valid (fd) && errno == EBADF) 2317 if (!fd_valid (fd) && errno == EBADF)
1607 fd_kill (EV_A_ fd); 2318 fd_kill (EV_A_ fd);
1608} 2319}
1609 2320
1610/* called on ENOMEM in select/poll to kill some fds and retry */ 2321/* called on ENOMEM in select/poll to kill some fds and retry */
1611static void noinline ecb_cold 2322ecb_noinline ecb_cold
2323static void
1612fd_enomem (EV_P) 2324fd_enomem (EV_P)
1613{ 2325{
1614 int fd; 2326 int fd;
1615 2327
1616 for (fd = anfdmax; fd--; ) 2328 for (fd = anfdmax; fd--; )
… …
1620 break; 2332 break;
1621 } 2333 }
1622} 2334}
1623 2335
1624/* usually called after fork if backend needs to re-arm all fds from scratch */ 2336/* usually called after fork if backend needs to re-arm all fds from scratch */
1625static void noinline 2337ecb_noinline
2338static void
1626fd_rearm_all (EV_P) 2339fd_rearm_all (EV_P)
1627{ 2340{
1628 int fd; 2341 int fd;
1629 2342
1630 for (fd = 0; fd < anfdmax; ++fd) 2343 for (fd = 0; fd < anfdmax; ++fd)
… …
1683 ev_tstamp minat; 2396 ev_tstamp minat;
1684 ANHE *minpos; 2397 ANHE *minpos;
1685 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2398 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1686 2399
1687 /* find minimum child */ 2400 /* find minimum child */
1688 if (expect_true (pos + DHEAP - 1 < E)) 2401 if (ecb_expect_true (pos + DHEAP - 1 < E))
1689 { 2402 {
1690 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2403 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1691 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2404 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1692 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2405 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1693 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2406 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
… …
1811 2524
1812/*****************************************************************************/ 2525/*****************************************************************************/
1813 2526
1814#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2527#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1815 2528
1816static void noinline ecb_cold 2529ecb_noinline ecb_cold
2530static void
1817evpipe_init (EV_P) 2531evpipe_init (EV_P)
1818{ 2532{
1819 if (!ev_is_active (&pipe_w)) 2533 if (!ev_is_active (&pipe_w))
1820 { 2534 {
2535 int fds [2];
2536
1821# if EV_USE_EVENTFD 2537# if EV_USE_EVENTFD
2538 fds [0] = -1;
1822 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2539 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1823 if (evfd < 0 && errno == EINVAL) 2540 if (fds [1] < 0 && errno == EINVAL)
1824 evfd = eventfd (0, 0); 2541 fds [1] = eventfd (0, 0);
1825 2542
1826 if (evfd >= 0) 2543 if (fds [1] < 0)
2544# endif
1827 { 2545 {
2546 while (pipe (fds))
2547 ev_syserr ("(libev) error creating signal/async pipe");
2548
2549 fd_intern (fds [0]);
2550 }
2551
1828 evpipe [0] = -1; 2552 evpipe [0] = fds [0];
1829 fd_intern (evfd); /* doing it twice doesn't hurt */ 2553
1830 ev_io_set (&pipe_w, evfd, EV_READ); 2554 if (evpipe [1] < 0)
2555 evpipe [1] = fds [1]; /* first call, set write fd */
2556 else
2557 {
2558 /* on subsequent calls, do not change evpipe [1] */
2559 /* so that evpipe_write can always rely on its value. */
2560 /* this branch does not do anything sensible on windows, */
2561 /* so must not be executed on windows */
2562
2563 dup2 (fds [1], evpipe [1]);
2564 close (fds [1]);
2565 }
2566
2567 fd_intern (evpipe [1]);
2568
2569 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2570 ev_io_start (EV_A_ &pipe_w);
2571 ev_unref (EV_A); /* watcher should not keep loop alive */
2572 }
2573}
2574
2575inline_speed void
2576evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2577{
2578 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2579
2580 if (ecb_expect_true (*flag))
2581 return;
2582
2583 *flag = 1;
2584 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2585
2586 pipe_write_skipped = 1;
2587
2588 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2589
2590 if (pipe_write_wanted)
2591 {
2592 int old_errno;
2593
2594 pipe_write_skipped = 0;
2595 ECB_MEMORY_FENCE_RELEASE;
2596
2597 old_errno = errno; /* save errno because write will clobber it */
2598
2599#if EV_USE_EVENTFD
2600 if (evpipe [0] < 0)
2601 {
2602 uint64_t counter = 1;
2603 write (evpipe [1], &counter, sizeof (uint64_t));
1831 } 2604 }
1832 else 2605 else
1833# endif 2606#endif
1834 { 2607 {
1835 while (pipe (evpipe)) 2608#ifdef _WIN32
1836 ev_syserr ("(libev) error creating signal/async pipe"); 2609 WSABUF buf;
1837 2610 DWORD sent;
1838 fd_intern (evpipe [0]); 2611 buf.buf = (char *)&buf;
1839 fd_intern (evpipe [1]); 2612 buf.len = 1;
1840 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2613 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1841 } 2614#else
1842
1843 ev_io_start (EV_A_ &pipe_w);
1844 ev_unref (EV_A); /* watcher should not keep loop alive */
1845 }
1846}
1847
1848inline_speed void
1849evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1850{
1851 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1852
1853 if (expect_true (*flag))
1854 return;
1855
1856 *flag = 1;
1857
1858 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1859
1860 pipe_write_skipped = 1;
1861
1862 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1863
1864 if (pipe_write_wanted)
1865 {
1866 int old_errno;
1867
1868 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1869
1870 old_errno = errno; /* save errno because write will clobber it */
1871
1872#if EV_USE_EVENTFD
1873 if (evfd >= 0)
1874 {
1875 uint64_t counter = 1;
1876 write (evfd, &counter, sizeof (uint64_t));
1877 }
1878 else
1879#endif
1880 {
1881 /* win32 people keep sending patches that change this write() to send() */
1882 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1883 /* so when you think this write should be a send instead, please find out */
1884 /* where your send() is from - it's definitely not the microsoft send, and */
1885 /* tell me. thank you. */
1886 /* it might be that your problem is that your environment needs EV_USE_WSASOCKET */
1887 /* check the ev documentation on how to use this flag */
1888 write (evpipe [1], &(evpipe [1]), 1); 2615 write (evpipe [1], &(evpipe [1]), 1);
2616#endif
1889 } 2617 }
1890 2618
1891 errno = old_errno; 2619 errno = old_errno;
1892 } 2620 }
1893} 2621}
… …
1900 int i; 2628 int i;
1901 2629
1902 if (revents & EV_READ) 2630 if (revents & EV_READ)
1903 { 2631 {
1904#if EV_USE_EVENTFD 2632#if EV_USE_EVENTFD
1905 if (evfd >= 0) 2633 if (evpipe [0] < 0)
1906 { 2634 {
1907 uint64_t counter; 2635 uint64_t counter;
1908 read (evfd, &counter, sizeof (uint64_t)); 2636 read (evpipe [1], &counter, sizeof (uint64_t));
1909 } 2637 }
1910 else 2638 else
1911#endif 2639#endif
1912 { 2640 {
1913 char dummy; 2641 char dummy[4];
1914 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2642#ifdef _WIN32
2643 WSABUF buf;
2644 DWORD recvd;
2645 DWORD flags = 0;
2646 buf.buf = dummy;
2647 buf.len = sizeof (dummy);
2648 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2649#else
1915 read (evpipe [0], &dummy, 1); 2650 read (evpipe [0], &dummy, sizeof (dummy));
2651#endif
1916 } 2652 }
1917 } 2653 }
1918 2654
1919 pipe_write_skipped = 0; 2655 pipe_write_skipped = 0;
1920 2656
… …
1923#if EV_SIGNAL_ENABLE 2659#if EV_SIGNAL_ENABLE
1924 if (sig_pending) 2660 if (sig_pending)
1925 { 2661 {
1926 sig_pending = 0; 2662 sig_pending = 0;
1927 2663
1928 ECB_MEMORY_FENCE_RELEASE; 2664 ECB_MEMORY_FENCE;
1929 2665
1930 for (i = EV_NSIG - 1; i--; ) 2666 for (i = EV_NSIG - 1; i--; )
1931 if (expect_false (signals [i].pending)) 2667 if (ecb_expect_false (signals [i].pending))
1932 ev_feed_signal_event (EV_A_ i + 1); 2668 ev_feed_signal_event (EV_A_ i + 1);
1933 } 2669 }
1934#endif 2670#endif
1935 2671
1936#if EV_ASYNC_ENABLE 2672#if EV_ASYNC_ENABLE
1937 if (async_pending) 2673 if (async_pending)
1938 { 2674 {
1939 async_pending = 0; 2675 async_pending = 0;
1940 2676
1941 ECB_MEMORY_FENCE_RELEASE; 2677 ECB_MEMORY_FENCE;
1942 2678
1943 for (i = asynccnt; i--; ) 2679 for (i = asynccnt; i--; )
1944 if (asyncs [i]->sent) 2680 if (asyncs [i]->sent)
1945 { 2681 {
1946 asyncs [i]->sent = 0; 2682 asyncs [i]->sent = 0;
2683 ECB_MEMORY_FENCE_RELEASE;
1947 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2684 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1948 } 2685 }
1949 } 2686 }
1950#endif 2687#endif
1951} 2688}
1952 2689
1953/*****************************************************************************/ 2690/*****************************************************************************/
1954 2691
1955void 2692void
1956ev_feed_signal (int signum) EV_THROW 2693ev_feed_signal (int signum) EV_NOEXCEPT
1957{ 2694{
1958#if EV_MULTIPLICITY 2695#if EV_MULTIPLICITY
2696 EV_P;
2697 ECB_MEMORY_FENCE_ACQUIRE;
1959 EV_P = signals [signum - 1].loop; 2698 EV_A = signals [signum - 1].loop;
1960 2699
1961 if (!EV_A) 2700 if (!EV_A)
1962 return; 2701 return;
1963#endif 2702#endif
1964 2703
1965 if (!ev_active (&pipe_w))
1966 return;
1967
1968 signals [signum - 1].pending = 1; 2704 signals [signum - 1].pending = 1;
1969 evpipe_write (EV_A_ &sig_pending); 2705 evpipe_write (EV_A_ &sig_pending);
1970} 2706}
1971 2707
1972static void 2708static void
… …
1977#endif 2713#endif
1978 2714
1979 ev_feed_signal (signum); 2715 ev_feed_signal (signum);
1980} 2716}
1981 2717
1982void noinline 2718ecb_noinline
2719void
1983ev_feed_signal_event (EV_P_ int signum) EV_THROW 2720ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1984{ 2721{
1985 WL w; 2722 WL w;
1986 2723
1987 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2724 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
1988 return; 2725 return;
1989 2726
1990 --signum; 2727 --signum;
1991 2728
1992#if EV_MULTIPLICITY 2729#if EV_MULTIPLICITY
1993 /* it is permissible to try to feed a signal to the wrong loop */ 2730 /* it is permissible to try to feed a signal to the wrong loop */
1994 /* or, likely more useful, feeding a signal nobody is waiting for */ 2731 /* or, likely more useful, feeding a signal nobody is waiting for */
1995 2732
1996 if (expect_false (signals [signum].loop != EV_A)) 2733 if (ecb_expect_false (signals [signum].loop != EV_A))
1997 return; 2734 return;
1998#endif 2735#endif
1999 2736
2000 signals [signum].pending = 0; 2737 signals [signum].pending = 0;
2738 ECB_MEMORY_FENCE_RELEASE;
2001 2739
2002 for (w = signals [signum].head; w; w = w->next) 2740 for (w = signals [signum].head; w; w = w->next)
2003 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2741 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
2004} 2742}
2005 2743
… …
2096# include "ev_kqueue.c" 2834# include "ev_kqueue.c"
2097#endif 2835#endif
2098#if EV_USE_EPOLL 2836#if EV_USE_EPOLL
2099# include "ev_epoll.c" 2837# include "ev_epoll.c"
2100#endif 2838#endif
2839#if EV_USE_LINUXAIO
2840# include "ev_linuxaio.c"
2841#endif
2842#if EV_USE_IOURING
2843# include "ev_iouring.c"
2844#endif
2101#if EV_USE_POLL 2845#if EV_USE_POLL
2102# include "ev_poll.c" 2846# include "ev_poll.c"
2103#endif 2847#endif
2104#if EV_USE_SELECT 2848#if EV_USE_SELECT
2105# include "ev_select.c" 2849# include "ev_select.c"
2106#endif 2850#endif
2107 2851
2108int ecb_cold 2852ecb_cold int
2109ev_version_major (void) EV_THROW 2853ev_version_major (void) EV_NOEXCEPT
2110{ 2854{
2111 return EV_VERSION_MAJOR; 2855 return EV_VERSION_MAJOR;
2112} 2856}
2113 2857
2114int ecb_cold 2858ecb_cold int
2115ev_version_minor (void) EV_THROW 2859ev_version_minor (void) EV_NOEXCEPT
2116{ 2860{
2117 return EV_VERSION_MINOR; 2861 return EV_VERSION_MINOR;
2118} 2862}
2119 2863
2120/* return true if we are running with elevated privileges and should ignore env variables */ 2864/* return true if we are running with elevated privileges and should ignore env variables */
2121int inline_size ecb_cold 2865inline_size ecb_cold int
2122enable_secure (void) 2866enable_secure (void)
2123{ 2867{
2124#ifdef _WIN32 2868#ifdef _WIN32
2125 return 0; 2869 return 0;
2126#else 2870#else
2127 return getuid () != geteuid () 2871 return getuid () != geteuid ()
2128 || getgid () != getegid (); 2872 || getgid () != getegid ();
2129#endif 2873#endif
2130} 2874}
2131 2875
2132unsigned int ecb_cold 2876ecb_cold
2877unsigned int
2133ev_supported_backends (void) EV_THROW 2878ev_supported_backends (void) EV_NOEXCEPT
2134{ 2879{
2135 unsigned int flags = 0; 2880 unsigned int flags = 0;
2136 2881
2137 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2882 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2138 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2883 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
2139 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2884 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2885 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
2886 if (EV_USE_IOURING ) flags |= EVBACKEND_IOURING;
2140 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2887 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
2141 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2888 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
2142 2889
2143 return flags; 2890 return flags;
2144} 2891}
2145 2892
2146unsigned int ecb_cold 2893ecb_cold
2894unsigned int
2147ev_recommended_backends (void) EV_THROW 2895ev_recommended_backends (void) EV_NOEXCEPT
2148{ 2896{
2149 unsigned int flags = ev_supported_backends (); 2897 unsigned int flags = ev_supported_backends ();
2150 2898
2151#ifndef __NetBSD__ 2899#ifndef __NetBSD__
2152 /* kqueue is borked on everything but netbsd apparently */ 2900 /* kqueue is borked on everything but netbsd apparently */
… …
2160#endif 2908#endif
2161#ifdef __FreeBSD__ 2909#ifdef __FreeBSD__
2162 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ 2910 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2163#endif 2911#endif
2164 2912
2913 /* TODO: linuxaio is very experimental */
2914#if !EV_RECOMMEND_LINUXAIO
2915 flags &= ~EVBACKEND_LINUXAIO;
2916#endif
2917 /* TODO: linuxaio is super experimental */
2918#if !EV_RECOMMEND_IOURING
2919 flags &= ~EVBACKEND_IOURING;
2920#endif
2921
2165 return flags; 2922 return flags;
2166} 2923}
2167 2924
2168unsigned int ecb_cold 2925ecb_cold
2926unsigned int
2169ev_embeddable_backends (void) EV_THROW 2927ev_embeddable_backends (void) EV_NOEXCEPT
2170{ 2928{
2171 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2929 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2172 2930
2173 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2931 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2174 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 2932 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2175 flags &= ~EVBACKEND_EPOLL; 2933 flags &= ~EVBACKEND_EPOLL;
2176 2934
2935 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
2936
2937 /* EVBACKEND_IOURING is practically embeddable, but the current implementation is not
2938 * because our backend_fd is the epoll fd we need as fallback.
2939 * if the kernel ever is fixed, this might change...
2940 */
2941
2177 return flags; 2942 return flags;
2178} 2943}
2179 2944
2180unsigned int 2945unsigned int
2181ev_backend (EV_P) EV_THROW 2946ev_backend (EV_P) EV_NOEXCEPT
2182{ 2947{
2183 return backend; 2948 return backend;
2184} 2949}
2185 2950
2186#if EV_FEATURE_API 2951#if EV_FEATURE_API
2187unsigned int 2952unsigned int
2188ev_iteration (EV_P) EV_THROW 2953ev_iteration (EV_P) EV_NOEXCEPT
2189{ 2954{
2190 return loop_count; 2955 return loop_count;
2191} 2956}
2192 2957
2193unsigned int 2958unsigned int
2194ev_depth (EV_P) EV_THROW 2959ev_depth (EV_P) EV_NOEXCEPT
2195{ 2960{
2196 return loop_depth; 2961 return loop_depth;
2197} 2962}
2198 2963
2199void 2964void
2200ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW 2965ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2201{ 2966{
2202 io_blocktime = interval; 2967 io_blocktime = interval;
2203} 2968}
2204 2969
2205void 2970void
2206ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW 2971ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2207{ 2972{
2208 timeout_blocktime = interval; 2973 timeout_blocktime = interval;
2209} 2974}
2210 2975
2211void 2976void
2212ev_set_userdata (EV_P_ void *data) EV_THROW 2977ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2213{ 2978{
2214 userdata = data; 2979 userdata = data;
2215} 2980}
2216 2981
2217void * 2982void *
2218ev_userdata (EV_P) EV_THROW 2983ev_userdata (EV_P) EV_NOEXCEPT
2219{ 2984{
2220 return userdata; 2985 return userdata;
2221} 2986}
2222 2987
2223void 2988void
2224ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW 2989ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
2225{ 2990{
2226 invoke_cb = invoke_pending_cb; 2991 invoke_cb = invoke_pending_cb;
2227} 2992}
2228 2993
2229void 2994void
2230ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW 2995ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
2231{ 2996{
2232 release_cb = release; 2997 release_cb = release;
2233 acquire_cb = acquire; 2998 acquire_cb = acquire;
2234} 2999}
2235#endif 3000#endif
2236 3001
2237/* initialise a loop structure, must be zero-initialised */ 3002/* initialise a loop structure, must be zero-initialised */
2238static void noinline ecb_cold 3003ecb_noinline ecb_cold
3004static void
2239loop_init (EV_P_ unsigned int flags) EV_THROW 3005loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
2240{ 3006{
2241 if (!backend) 3007 if (!backend)
2242 { 3008 {
2243 origflags = flags; 3009 origflags = flags;
2244 3010
… …
2289#if EV_ASYNC_ENABLE 3055#if EV_ASYNC_ENABLE
2290 async_pending = 0; 3056 async_pending = 0;
2291#endif 3057#endif
2292 pipe_write_skipped = 0; 3058 pipe_write_skipped = 0;
2293 pipe_write_wanted = 0; 3059 pipe_write_wanted = 0;
3060 evpipe [0] = -1;
3061 evpipe [1] = -1;
2294#if EV_USE_INOTIFY 3062#if EV_USE_INOTIFY
2295 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3063 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2296#endif 3064#endif
2297#if EV_USE_SIGNALFD 3065#if EV_USE_SIGNALFD
2298 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 3066 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
… …
2300 3068
2301 if (!(flags & EVBACKEND_MASK)) 3069 if (!(flags & EVBACKEND_MASK))
2302 flags |= ev_recommended_backends (); 3070 flags |= ev_recommended_backends ();
2303 3071
2304#if EV_USE_IOCP 3072#if EV_USE_IOCP
2305 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 3073 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2306#endif 3074#endif
2307#if EV_USE_PORT 3075#if EV_USE_PORT
2308 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3076 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
2309#endif 3077#endif
2310#if EV_USE_KQUEUE 3078#if EV_USE_KQUEUE
2311 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 3079 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
3080#endif
3081#if EV_USE_IOURING
3082 if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
3083#endif
3084#if EV_USE_LINUXAIO
3085 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
2312#endif 3086#endif
2313#if EV_USE_EPOLL 3087#if EV_USE_EPOLL
2314 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3088 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
2315#endif 3089#endif
2316#if EV_USE_POLL 3090#if EV_USE_POLL
2317 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3091 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
2318#endif 3092#endif
2319#if EV_USE_SELECT 3093#if EV_USE_SELECT
2320 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3094 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
2321#endif 3095#endif
2322 3096
2323 ev_prepare_init (&pending_w, pendingcb); 3097 ev_prepare_init (&pending_w, pendingcb);
2324 3098
2325#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3099#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
2328#endif 3102#endif
2329 } 3103 }
2330} 3104}
2331 3105
2332/* free up a loop structure */ 3106/* free up a loop structure */
2333void ecb_cold 3107ecb_cold
3108void
2334ev_loop_destroy (EV_P) 3109ev_loop_destroy (EV_P)
2335{ 3110{
2336 int i; 3111 int i;
2337 3112
2338#if EV_MULTIPLICITY 3113#if EV_MULTIPLICITY
… …
2341 return; 3116 return;
2342#endif 3117#endif
2343 3118
2344#if EV_CLEANUP_ENABLE 3119#if EV_CLEANUP_ENABLE
2345 /* queue cleanup watchers (and execute them) */ 3120 /* queue cleanup watchers (and execute them) */
2346 if (expect_false (cleanupcnt)) 3121 if (ecb_expect_false (cleanupcnt))
2347 { 3122 {
2348 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); 3123 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2349 EV_INVOKE_PENDING; 3124 EV_INVOKE_PENDING;
2350 } 3125 }
2351#endif 3126#endif
2352 3127
2353#if EV_CHILD_ENABLE 3128#if EV_CHILD_ENABLE
2354 if (ev_is_active (&childev)) 3129 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2355 { 3130 {
2356 ev_ref (EV_A); /* child watcher */ 3131 ev_ref (EV_A); /* child watcher */
2357 ev_signal_stop (EV_A_ &childev); 3132 ev_signal_stop (EV_A_ &childev);
2358 } 3133 }
2359#endif 3134#endif
… …
2361 if (ev_is_active (&pipe_w)) 3136 if (ev_is_active (&pipe_w))
2362 { 3137 {
2363 /*ev_ref (EV_A);*/ 3138 /*ev_ref (EV_A);*/
2364 /*ev_io_stop (EV_A_ &pipe_w);*/ 3139 /*ev_io_stop (EV_A_ &pipe_w);*/
2365 3140
2366#if EV_USE_EVENTFD
2367 if (evfd >= 0)
2368 close (evfd);
2369#endif
2370
2371 if (evpipe [0] >= 0)
2372 {
2373 EV_WIN32_CLOSE_FD (evpipe [0]); 3141 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2374 EV_WIN32_CLOSE_FD (evpipe [1]); 3142 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2375 }
2376 } 3143 }
2377 3144
2378#if EV_USE_SIGNALFD 3145#if EV_USE_SIGNALFD
2379 if (ev_is_active (&sigfd_w)) 3146 if (ev_is_active (&sigfd_w))
2380 close (sigfd); 3147 close (sigfd);
… …
2387 3154
2388 if (backend_fd >= 0) 3155 if (backend_fd >= 0)
2389 close (backend_fd); 3156 close (backend_fd);
2390 3157
2391#if EV_USE_IOCP 3158#if EV_USE_IOCP
2392 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3159 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2393#endif 3160#endif
2394#if EV_USE_PORT 3161#if EV_USE_PORT
2395 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3162 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
2396#endif 3163#endif
2397#if EV_USE_KQUEUE 3164#if EV_USE_KQUEUE
2398 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3165 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3166#endif
3167#if EV_USE_IOURING
3168 if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
3169#endif
3170#if EV_USE_LINUXAIO
3171 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
2399#endif 3172#endif
2400#if EV_USE_EPOLL 3173#if EV_USE_EPOLL
2401 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3174 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
2402#endif 3175#endif
2403#if EV_USE_POLL 3176#if EV_USE_POLL
2404 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3177 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
2405#endif 3178#endif
2406#if EV_USE_SELECT 3179#if EV_USE_SELECT
2407 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3180 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
2408#endif 3181#endif
2409 3182
2410 for (i = NUMPRI; i--; ) 3183 for (i = NUMPRI; i--; )
2411 { 3184 {
2412 array_free (pending, [i]); 3185 array_free (pending, [i]);
… …
2454 3227
2455inline_size void 3228inline_size void
2456loop_fork (EV_P) 3229loop_fork (EV_P)
2457{ 3230{
2458#if EV_USE_PORT 3231#if EV_USE_PORT
2459 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3232 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
2460#endif 3233#endif
2461#if EV_USE_KQUEUE 3234#if EV_USE_KQUEUE
2462 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3235 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3236#endif
3237#if EV_USE_IOURING
3238 if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
3239#endif
3240#if EV_USE_LINUXAIO
3241 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
2463#endif 3242#endif
2464#if EV_USE_EPOLL 3243#if EV_USE_EPOLL
2465 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3244 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
2466#endif 3245#endif
2467#if EV_USE_INOTIFY 3246#if EV_USE_INOTIFY
2468 infy_fork (EV_A); 3247 infy_fork (EV_A);
2469#endif 3248#endif
2470 3249
3250#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2471 if (ev_is_active (&pipe_w)) 3251 if (ev_is_active (&pipe_w) && postfork != 2)
2472 { 3252 {
2473 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 3253 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2474 3254
2475 ev_ref (EV_A); 3255 ev_ref (EV_A);
2476 ev_io_stop (EV_A_ &pipe_w); 3256 ev_io_stop (EV_A_ &pipe_w);
2477 3257
2478#if EV_USE_EVENTFD
2479 if (evfd >= 0)
2480 close (evfd);
2481#endif
2482
2483 if (evpipe [0] >= 0) 3258 if (evpipe [0] >= 0)
2484 {
2485 EV_WIN32_CLOSE_FD (evpipe [0]); 3259 EV_WIN32_CLOSE_FD (evpipe [0]);
2486 EV_WIN32_CLOSE_FD (evpipe [1]);
2487 }
2488 3260
2489#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2490 evpipe_init (EV_A); 3261 evpipe_init (EV_A);
2491 /* now iterate over everything, in case we missed something */ 3262 /* iterate over everything, in case we missed something before */
2492 pipecb (EV_A_ &pipe_w, EV_READ); 3263 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2493#endif
2494 } 3264 }
3265#endif
2495 3266
2496 postfork = 0; 3267 postfork = 0;
2497} 3268}
2498 3269
2499#if EV_MULTIPLICITY 3270#if EV_MULTIPLICITY
2500 3271
3272ecb_cold
2501struct ev_loop * ecb_cold 3273struct ev_loop *
2502ev_loop_new (unsigned int flags) EV_THROW 3274ev_loop_new (unsigned int flags) EV_NOEXCEPT
2503{ 3275{
2504 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3276 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2505 3277
2506 memset (EV_A, 0, sizeof (struct ev_loop)); 3278 memset (EV_A, 0, sizeof (struct ev_loop));
2507 loop_init (EV_A_ flags); 3279 loop_init (EV_A_ flags);
… …
2514} 3286}
2515 3287
2516#endif /* multiplicity */ 3288#endif /* multiplicity */
2517 3289
2518#if EV_VERIFY 3290#if EV_VERIFY
2519static void noinline ecb_cold 3291ecb_noinline ecb_cold
3292static void
2520verify_watcher (EV_P_ W w) 3293verify_watcher (EV_P_ W w)
2521{ 3294{
2522 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3295 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2523 3296
2524 if (w->pending) 3297 if (w->pending)
2525 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3298 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2526} 3299}
2527 3300
2528static void noinline ecb_cold 3301ecb_noinline ecb_cold
3302static void
2529verify_heap (EV_P_ ANHE *heap, int N) 3303verify_heap (EV_P_ ANHE *heap, int N)
2530{ 3304{
2531 int i; 3305 int i;
2532 3306
2533 for (i = HEAP0; i < N + HEAP0; ++i) 3307 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2538 3312
2539 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3313 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2540 } 3314 }
2541} 3315}
2542 3316
2543static void noinline ecb_cold 3317ecb_noinline ecb_cold
3318static void
2544array_verify (EV_P_ W *ws, int cnt) 3319array_verify (EV_P_ W *ws, int cnt)
2545{ 3320{
2546 while (cnt--) 3321 while (cnt--)
2547 { 3322 {
2548 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3323 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2551} 3326}
2552#endif 3327#endif
2553 3328
2554#if EV_FEATURE_API 3329#if EV_FEATURE_API
2555void ecb_cold 3330void ecb_cold
2556ev_verify (EV_P) EV_THROW 3331ev_verify (EV_P) EV_NOEXCEPT
2557{ 3332{
2558#if EV_VERIFY 3333#if EV_VERIFY
2559 int i, j; 3334 int i;
2560 WL w, w2; 3335 WL w, w2;
2561 3336
2562 assert (activecnt >= -1); 3337 assert (activecnt >= -1);
2563 3338
2564 assert (fdchangemax >= fdchangecnt); 3339 assert (fdchangemax >= fdchangecnt);
2565 for (i = 0; i < fdchangecnt; ++i) 3340 for (i = 0; i < fdchangecnt; ++i)
2566 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3341 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2567 3342
2568 assert (anfdmax >= 0); 3343 assert (anfdmax >= 0);
2569 for (i = j = 0; i < anfdmax; ++i) 3344 for (i = 0; i < anfdmax; ++i)
3345 {
3346 int j = 0;
3347
2570 for (w = w2 = anfds [i].head; w; w = w->next) 3348 for (w = w2 = anfds [i].head; w; w = w->next)
2571 { 3349 {
2572 verify_watcher (EV_A_ (W)w); 3350 verify_watcher (EV_A_ (W)w);
2573 3351
2574 if (++j & 1) 3352 if (j++ & 1)
2575 w2 = w2->next; 3353 {
2576
2577 assert (("libev: io watcher list contains a loop", w != w2)); 3354 assert (("libev: io watcher list contains a loop", w != w2));
3355 w2 = w2->next;
3356 }
3357
2578 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3358 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2579 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3359 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2580 } 3360 }
3361 }
2581 3362
2582 assert (timermax >= timercnt); 3363 assert (timermax >= timercnt);
2583 verify_heap (EV_A_ timers, timercnt); 3364 verify_heap (EV_A_ timers, timercnt);
2584 3365
2585#if EV_PERIODIC_ENABLE 3366#if EV_PERIODIC_ENABLE
… …
2631#endif 3412#endif
2632} 3413}
2633#endif 3414#endif
2634 3415
2635#if EV_MULTIPLICITY 3416#if EV_MULTIPLICITY
3417ecb_cold
2636struct ev_loop * ecb_cold 3418struct ev_loop *
2637#else 3419#else
2638int 3420int
2639#endif 3421#endif
2640ev_default_loop (unsigned int flags) EV_THROW 3422ev_default_loop (unsigned int flags) EV_NOEXCEPT
2641{ 3423{
2642 if (!ev_default_loop_ptr) 3424 if (!ev_default_loop_ptr)
2643 { 3425 {
2644#if EV_MULTIPLICITY 3426#if EV_MULTIPLICITY
2645 EV_P = ev_default_loop_ptr = &default_loop_struct; 3427 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2664 3446
2665 return ev_default_loop_ptr; 3447 return ev_default_loop_ptr;
2666} 3448}
2667 3449
2668void 3450void
2669ev_loop_fork (EV_P) EV_THROW 3451ev_loop_fork (EV_P) EV_NOEXCEPT
2670{ 3452{
2671 postfork = 1; /* must be in line with ev_default_fork */ 3453 postfork = 1;
2672} 3454}
2673 3455
2674/*****************************************************************************/ 3456/*****************************************************************************/
2675 3457
2676void 3458void
… …
2678{ 3460{
2679 EV_CB_INVOKE ((W)w, revents); 3461 EV_CB_INVOKE ((W)w, revents);
2680} 3462}
2681 3463
2682unsigned int 3464unsigned int
2683ev_pending_count (EV_P) EV_THROW 3465ev_pending_count (EV_P) EV_NOEXCEPT
2684{ 3466{
2685 int pri; 3467 int pri;
2686 unsigned int count = 0; 3468 unsigned int count = 0;
2687 3469
2688 for (pri = NUMPRI; pri--; ) 3470 for (pri = NUMPRI; pri--; )
2689 count += pendingcnt [pri]; 3471 count += pendingcnt [pri];
2690 3472
2691 return count; 3473 return count;
2692} 3474}
2693 3475
2694void noinline 3476ecb_noinline
3477void
2695ev_invoke_pending (EV_P) 3478ev_invoke_pending (EV_P)
2696{ 3479{
2697 for (pendingpri = NUMPRI; pendingpri--; ) /* pendingpri is modified during the loop */ 3480 pendingpri = NUMPRI;
3481
3482 do
3483 {
3484 --pendingpri;
3485
3486 /* pendingpri possibly gets modified in the inner loop */
2698 while (pendingcnt [pendingpri]) 3487 while (pendingcnt [pendingpri])
2699 { 3488 {
2700 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri]; 3489 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2701 3490
2702 p->w->pending = 0; 3491 p->w->pending = 0;
2703 EV_CB_INVOKE (p->w, p->events); 3492 EV_CB_INVOKE (p->w, p->events);
2704 EV_FREQUENT_CHECK; 3493 EV_FREQUENT_CHECK;
2705 } 3494 }
3495 }
3496 while (pendingpri);
2706} 3497}
2707 3498
2708#if EV_IDLE_ENABLE 3499#if EV_IDLE_ENABLE
2709/* make idle watchers pending. this handles the "call-idle */ 3500/* make idle watchers pending. this handles the "call-idle */
2710/* only when higher priorities are idle" logic */ 3501/* only when higher priorities are idle" logic */
2711inline_size void 3502inline_size void
2712idle_reify (EV_P) 3503idle_reify (EV_P)
2713{ 3504{
2714 if (expect_false (idleall)) 3505 if (ecb_expect_false (idleall))
2715 { 3506 {
2716 int pri; 3507 int pri;
2717 3508
2718 for (pri = NUMPRI; pri--; ) 3509 for (pri = NUMPRI; pri--; )
2719 { 3510 {
… …
2768 } 3559 }
2769} 3560}
2770 3561
2771#if EV_PERIODIC_ENABLE 3562#if EV_PERIODIC_ENABLE
2772 3563
2773static void noinline 3564ecb_noinline
3565static void
2774periodic_recalc (EV_P_ ev_periodic *w) 3566periodic_recalc (EV_P_ ev_periodic *w)
2775{ 3567{
2776 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3568 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2777 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); 3569 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2778 3570
… …
2780 while (at <= ev_rt_now) 3572 while (at <= ev_rt_now)
2781 { 3573 {
2782 ev_tstamp nat = at + w->interval; 3574 ev_tstamp nat = at + w->interval;
2783 3575
2784 /* when resolution fails us, we use ev_rt_now */ 3576 /* when resolution fails us, we use ev_rt_now */
2785 if (expect_false (nat == at)) 3577 if (ecb_expect_false (nat == at))
2786 { 3578 {
2787 at = ev_rt_now; 3579 at = ev_rt_now;
2788 break; 3580 break;
2789 } 3581 }
2790 3582
… …
2800{ 3592{
2801 EV_FREQUENT_CHECK; 3593 EV_FREQUENT_CHECK;
2802 3594
2803 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3595 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2804 { 3596 {
2805 int feed_count = 0;
2806
2807 do 3597 do
2808 { 3598 {
2809 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3599 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2810 3600
2811 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3601 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2838 } 3628 }
2839} 3629}
2840 3630
2841/* simply recalculate all periodics */ 3631/* simply recalculate all periodics */
2842/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3632/* TODO: maybe ensure that at least one event happens when jumping forward? */
2843static void noinline ecb_cold 3633ecb_noinline ecb_cold
3634static void
2844periodics_reschedule (EV_P) 3635periodics_reschedule (EV_P)
2845{ 3636{
2846 int i; 3637 int i;
2847 3638
2848 /* adjust periodics after time jump */ 3639 /* adjust periodics after time jump */
… …
2861 reheap (periodics, periodiccnt); 3652 reheap (periodics, periodiccnt);
2862} 3653}
2863#endif 3654#endif
2864 3655
2865/* adjust all timers by a given offset */ 3656/* adjust all timers by a given offset */
2866static void noinline ecb_cold 3657ecb_noinline ecb_cold
3658static void
2867timers_reschedule (EV_P_ ev_tstamp adjust) 3659timers_reschedule (EV_P_ ev_tstamp adjust)
2868{ 3660{
2869 int i; 3661 int i;
2870 3662
2871 for (i = 0; i < timercnt; ++i) 3663 for (i = 0; i < timercnt; ++i)
… …
2880/* also detect if there was a timejump, and act accordingly */ 3672/* also detect if there was a timejump, and act accordingly */
2881inline_speed void 3673inline_speed void
2882time_update (EV_P_ ev_tstamp max_block) 3674time_update (EV_P_ ev_tstamp max_block)
2883{ 3675{
2884#if EV_USE_MONOTONIC 3676#if EV_USE_MONOTONIC
2885 if (expect_true (have_monotonic)) 3677 if (ecb_expect_true (have_monotonic))
2886 { 3678 {
2887 int i; 3679 int i;
2888 ev_tstamp odiff = rtmn_diff; 3680 ev_tstamp odiff = rtmn_diff;
2889 3681
2890 mn_now = get_clock (); 3682 mn_now = get_clock ();
2891 3683
2892 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3684 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2893 /* interpolate in the meantime */ 3685 /* interpolate in the meantime */
2894 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3686 if (ecb_expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
2895 { 3687 {
2896 ev_rt_now = rtmn_diff + mn_now; 3688 ev_rt_now = rtmn_diff + mn_now;
2897 return; 3689 return;
2898 } 3690 }
2899 3691
… …
2913 ev_tstamp diff; 3705 ev_tstamp diff;
2914 rtmn_diff = ev_rt_now - mn_now; 3706 rtmn_diff = ev_rt_now - mn_now;
2915 3707
2916 diff = odiff - rtmn_diff; 3708 diff = odiff - rtmn_diff;
2917 3709
2918 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP)) 3710 if (ecb_expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2919 return; /* all is well */ 3711 return; /* all is well */
2920 3712
2921 ev_rt_now = ev_time (); 3713 ev_rt_now = ev_time ();
2922 mn_now = get_clock (); 3714 mn_now = get_clock ();
2923 now_floor = mn_now; 3715 now_floor = mn_now;
… …
2932 else 3724 else
2933#endif 3725#endif
2934 { 3726 {
2935 ev_rt_now = ev_time (); 3727 ev_rt_now = ev_time ();
2936 3728
2937 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 3729 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
2938 { 3730 {
2939 /* adjust timers. this is easy, as the offset is the same for all of them */ 3731 /* adjust timers. this is easy, as the offset is the same for all of them */
2940 timers_reschedule (EV_A_ ev_rt_now - mn_now); 3732 timers_reschedule (EV_A_ ev_rt_now - mn_now);
2941#if EV_PERIODIC_ENABLE 3733#if EV_PERIODIC_ENABLE
2942 periodics_reschedule (EV_A); 3734 periodics_reschedule (EV_A);
… …
2965#if EV_VERIFY >= 2 3757#if EV_VERIFY >= 2
2966 ev_verify (EV_A); 3758 ev_verify (EV_A);
2967#endif 3759#endif
2968 3760
2969#ifndef _WIN32 3761#ifndef _WIN32
2970 if (expect_false (curpid)) /* penalise the forking check even more */ 3762 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
2971 if (expect_false (getpid () != curpid)) 3763 if (ecb_expect_false (getpid () != curpid))
2972 { 3764 {
2973 curpid = getpid (); 3765 curpid = getpid ();
2974 postfork = 1; 3766 postfork = 1;
2975 } 3767 }
2976#endif 3768#endif
2977 3769
2978#if EV_FORK_ENABLE 3770#if EV_FORK_ENABLE
2979 /* we might have forked, so queue fork handlers */ 3771 /* we might have forked, so queue fork handlers */
2980 if (expect_false (postfork)) 3772 if (ecb_expect_false (postfork))
2981 if (forkcnt) 3773 if (forkcnt)
2982 { 3774 {
2983 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3775 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2984 EV_INVOKE_PENDING; 3776 EV_INVOKE_PENDING;
2985 } 3777 }
2986#endif 3778#endif
2987 3779
2988#if EV_PREPARE_ENABLE 3780#if EV_PREPARE_ENABLE
2989 /* queue prepare watchers (and execute them) */ 3781 /* queue prepare watchers (and execute them) */
2990 if (expect_false (preparecnt)) 3782 if (ecb_expect_false (preparecnt))
2991 { 3783 {
2992 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3784 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2993 EV_INVOKE_PENDING; 3785 EV_INVOKE_PENDING;
2994 } 3786 }
2995#endif 3787#endif
2996 3788
2997 if (expect_false (loop_done)) 3789 if (ecb_expect_false (loop_done))
2998 break; 3790 break;
2999 3791
3000 /* we might have forked, so reify kernel state if necessary */ 3792 /* we might have forked, so reify kernel state if necessary */
3001 if (expect_false (postfork)) 3793 if (ecb_expect_false (postfork))
3002 loop_fork (EV_A); 3794 loop_fork (EV_A);
3003 3795
3004 /* update fd-related kernel structures */ 3796 /* update fd-related kernel structures */
3005 fd_reify (EV_A); 3797 fd_reify (EV_A);
3006 3798
… …
3018 /* from now on, we want a pipe-wake-up */ 3810 /* from now on, we want a pipe-wake-up */
3019 pipe_write_wanted = 1; 3811 pipe_write_wanted = 1;
3020 3812
3021 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */ 3813 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3022 3814
3023 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) 3815 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
3024 { 3816 {
3025 waittime = MAX_BLOCKTIME; 3817 waittime = MAX_BLOCKTIME;
3026 3818
3027 if (timercnt) 3819 if (timercnt)
3028 { 3820 {
… …
3037 if (waittime > to) waittime = to; 3829 if (waittime > to) waittime = to;
3038 } 3830 }
3039#endif 3831#endif
3040 3832
3041 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3833 /* don't let timeouts decrease the waittime below timeout_blocktime */
3042 if (expect_false (waittime < timeout_blocktime)) 3834 if (ecb_expect_false (waittime < timeout_blocktime))
3043 waittime = timeout_blocktime; 3835 waittime = timeout_blocktime;
3044 3836
3045 /* at this point, we NEED to wait, so we have to ensure */ 3837 /* at this point, we NEED to wait, so we have to ensure */
3046 /* to pass a minimum nonzero value to the backend */ 3838 /* to pass a minimum nonzero value to the backend */
3047 if (expect_false (waittime < backend_mintime)) 3839 if (ecb_expect_false (waittime < backend_mintime))
3048 waittime = backend_mintime; 3840 waittime = backend_mintime;
3049 3841
3050 /* extra check because io_blocktime is commonly 0 */ 3842 /* extra check because io_blocktime is commonly 0 */
3051 if (expect_false (io_blocktime)) 3843 if (ecb_expect_false (io_blocktime))
3052 { 3844 {
3053 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3845 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3054 3846
3055 if (sleeptime > waittime - backend_mintime) 3847 if (sleeptime > waittime - backend_mintime)
3056 sleeptime = waittime - backend_mintime; 3848 sleeptime = waittime - backend_mintime;
3057 3849
3058 if (expect_true (sleeptime > 0.)) 3850 if (ecb_expect_true (sleeptime > 0.))
3059 { 3851 {
3060 ev_sleep (sleeptime); 3852 ev_sleep (sleeptime);
3061 waittime -= sleeptime; 3853 waittime -= sleeptime;
3062 } 3854 }
3063 } 3855 }
… …
3070 backend_poll (EV_A_ waittime); 3862 backend_poll (EV_A_ waittime);
3071 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3863 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3072 3864
3073 pipe_write_wanted = 0; /* just an optimisation, no fence needed */ 3865 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3074 3866
3867 ECB_MEMORY_FENCE_ACQUIRE;
3075 if (pipe_write_skipped) 3868 if (pipe_write_skipped)
3076 { 3869 {
3077 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 3870 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3078 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3871 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3079 } 3872 }
3080 3873
3081
3082 /* update ev_rt_now, do magic */ 3874 /* update ev_rt_now, do magic */
3083 time_update (EV_A_ waittime + sleeptime); 3875 time_update (EV_A_ waittime + sleeptime);
3084 } 3876 }
3085 3877
3086 /* queue pending timers and reschedule them */ 3878 /* queue pending timers and reschedule them */
… …
3094 idle_reify (EV_A); 3886 idle_reify (EV_A);
3095#endif 3887#endif
3096 3888
3097#if EV_CHECK_ENABLE 3889#if EV_CHECK_ENABLE
3098 /* queue check watchers, to be executed first */ 3890 /* queue check watchers, to be executed first */
3099 if (expect_false (checkcnt)) 3891 if (ecb_expect_false (checkcnt))
3100 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3892 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3101#endif 3893#endif
3102 3894
3103 EV_INVOKE_PENDING; 3895 EV_INVOKE_PENDING;
3104 } 3896 }
3105 while (expect_true ( 3897 while (ecb_expect_true (
3106 activecnt 3898 activecnt
3107 && !loop_done 3899 && !loop_done
3108 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) 3900 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
3109 )); 3901 ));
3110 3902
… …
3117 3909
3118 return activecnt; 3910 return activecnt;
3119} 3911}
3120 3912
3121void 3913void
3122ev_break (EV_P_ int how) EV_THROW 3914ev_break (EV_P_ int how) EV_NOEXCEPT
3123{ 3915{
3124 loop_done = how; 3916 loop_done = how;
3125} 3917}
3126 3918
3127void 3919void
3128ev_ref (EV_P) EV_THROW 3920ev_ref (EV_P) EV_NOEXCEPT
3129{ 3921{
3130 ++activecnt; 3922 ++activecnt;
3131} 3923}
3132 3924
3133void 3925void
3134ev_unref (EV_P) EV_THROW 3926ev_unref (EV_P) EV_NOEXCEPT
3135{ 3927{
3136 --activecnt; 3928 --activecnt;
3137} 3929}
3138 3930
3139void 3931void
3140ev_now_update (EV_P) EV_THROW 3932ev_now_update (EV_P) EV_NOEXCEPT
3141{ 3933{
3142 time_update (EV_A_ 1e100); 3934 time_update (EV_A_ 1e100);
3143} 3935}
3144 3936
3145void 3937void
3146ev_suspend (EV_P) EV_THROW 3938ev_suspend (EV_P) EV_NOEXCEPT
3147{ 3939{
3148 ev_now_update (EV_A); 3940 ev_now_update (EV_A);
3149} 3941}
3150 3942
3151void 3943void
3152ev_resume (EV_P) EV_THROW 3944ev_resume (EV_P) EV_NOEXCEPT
3153{ 3945{
3154 ev_tstamp mn_prev = mn_now; 3946 ev_tstamp mn_prev = mn_now;
3155 3947
3156 ev_now_update (EV_A); 3948 ev_now_update (EV_A);
3157 timers_reschedule (EV_A_ mn_now - mn_prev); 3949 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
3174inline_size void 3966inline_size void
3175wlist_del (WL *head, WL elem) 3967wlist_del (WL *head, WL elem)
3176{ 3968{
3177 while (*head) 3969 while (*head)
3178 { 3970 {
3179 if (expect_true (*head == elem)) 3971 if (ecb_expect_true (*head == elem))
3180 { 3972 {
3181 *head = elem->next; 3973 *head = elem->next;
3182 break; 3974 break;
3183 } 3975 }
3184 3976
… …
3196 w->pending = 0; 3988 w->pending = 0;
3197 } 3989 }
3198} 3990}
3199 3991
3200int 3992int
3201ev_clear_pending (EV_P_ void *w) EV_THROW 3993ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
3202{ 3994{
3203 W w_ = (W)w; 3995 W w_ = (W)w;
3204 int pending = w_->pending; 3996 int pending = w_->pending;
3205 3997
3206 if (expect_true (pending)) 3998 if (ecb_expect_true (pending))
3207 { 3999 {
3208 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4000 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3209 p->w = (W)&pending_w; 4001 p->w = (W)&pending_w;
3210 w_->pending = 0; 4002 w_->pending = 0;
3211 return p->events; 4003 return p->events;
… …
3238 w->active = 0; 4030 w->active = 0;
3239} 4031}
3240 4032
3241/*****************************************************************************/ 4033/*****************************************************************************/
3242 4034
3243void noinline 4035ecb_noinline
4036void
3244ev_io_start (EV_P_ ev_io *w) EV_THROW 4037ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
3245{ 4038{
3246 int fd = w->fd; 4039 int fd = w->fd;
3247 4040
3248 if (expect_false (ev_is_active (w))) 4041 if (ecb_expect_false (ev_is_active (w)))
3249 return; 4042 return;
3250 4043
3251 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4044 assert (("libev: ev_io_start called with negative fd", fd >= 0));
3252 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 4045 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
3253 4046
4047#if EV_VERIFY >= 2
4048 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4049#endif
3254 EV_FREQUENT_CHECK; 4050 EV_FREQUENT_CHECK;
3255 4051
3256 ev_start (EV_A_ (W)w, 1); 4052 ev_start (EV_A_ (W)w, 1);
3257 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4053 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
3258 wlist_add (&anfds[fd].head, (WL)w); 4054 wlist_add (&anfds[fd].head, (WL)w);
3259 4055
3260 /* common bug, apparently */ 4056 /* common bug, apparently */
3261 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w)); 4057 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3262 4058
… …
3264 w->events &= ~EV__IOFDSET; 4060 w->events &= ~EV__IOFDSET;
3265 4061
3266 EV_FREQUENT_CHECK; 4062 EV_FREQUENT_CHECK;
3267} 4063}
3268 4064
3269void noinline 4065ecb_noinline
4066void
3270ev_io_stop (EV_P_ ev_io *w) EV_THROW 4067ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
3271{ 4068{
3272 clear_pending (EV_A_ (W)w); 4069 clear_pending (EV_A_ (W)w);
3273 if (expect_false (!ev_is_active (w))) 4070 if (ecb_expect_false (!ev_is_active (w)))
3274 return; 4071 return;
3275 4072
3276 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4073 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
3277 4074
4075#if EV_VERIFY >= 2
4076 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4077#endif
3278 EV_FREQUENT_CHECK; 4078 EV_FREQUENT_CHECK;
3279 4079
3280 wlist_del (&anfds[w->fd].head, (WL)w); 4080 wlist_del (&anfds[w->fd].head, (WL)w);
3281 ev_stop (EV_A_ (W)w); 4081 ev_stop (EV_A_ (W)w);
3282 4082
3283 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 4083 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3284 4084
3285 EV_FREQUENT_CHECK; 4085 EV_FREQUENT_CHECK;
3286} 4086}
3287 4087
3288void noinline 4088ecb_noinline
4089void
3289ev_timer_start (EV_P_ ev_timer *w) EV_THROW 4090ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
3290{ 4091{
3291 if (expect_false (ev_is_active (w))) 4092 if (ecb_expect_false (ev_is_active (w)))
3292 return; 4093 return;
3293 4094
3294 ev_at (w) += mn_now; 4095 ev_at (w) += mn_now;
3295 4096
3296 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4097 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
3297 4098
3298 EV_FREQUENT_CHECK; 4099 EV_FREQUENT_CHECK;
3299 4100
3300 ++timercnt; 4101 ++timercnt;
3301 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4102 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
3302 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4103 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
3303 ANHE_w (timers [ev_active (w)]) = (WT)w; 4104 ANHE_w (timers [ev_active (w)]) = (WT)w;
3304 ANHE_at_cache (timers [ev_active (w)]); 4105 ANHE_at_cache (timers [ev_active (w)]);
3305 upheap (timers, ev_active (w)); 4106 upheap (timers, ev_active (w));
3306 4107
3307 EV_FREQUENT_CHECK; 4108 EV_FREQUENT_CHECK;
3308 4109
3309 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4110 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
3310} 4111}
3311 4112
3312void noinline 4113ecb_noinline
4114void
3313ev_timer_stop (EV_P_ ev_timer *w) EV_THROW 4115ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
3314{ 4116{
3315 clear_pending (EV_A_ (W)w); 4117 clear_pending (EV_A_ (W)w);
3316 if (expect_false (!ev_is_active (w))) 4118 if (ecb_expect_false (!ev_is_active (w)))
3317 return; 4119 return;
3318 4120
3319 EV_FREQUENT_CHECK; 4121 EV_FREQUENT_CHECK;
3320 4122
3321 { 4123 {
… …
3323 4125
3324 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4126 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
3325 4127
3326 --timercnt; 4128 --timercnt;
3327 4129
3328 if (expect_true (active < timercnt + HEAP0)) 4130 if (ecb_expect_true (active < timercnt + HEAP0))
3329 { 4131 {
3330 timers [active] = timers [timercnt + HEAP0]; 4132 timers [active] = timers [timercnt + HEAP0];
3331 adjustheap (timers, timercnt, active); 4133 adjustheap (timers, timercnt, active);
3332 } 4134 }
3333 } 4135 }
… …
3337 ev_stop (EV_A_ (W)w); 4139 ev_stop (EV_A_ (W)w);
3338 4140
3339 EV_FREQUENT_CHECK; 4141 EV_FREQUENT_CHECK;
3340} 4142}
3341 4143
3342void noinline 4144ecb_noinline
4145void
3343ev_timer_again (EV_P_ ev_timer *w) EV_THROW 4146ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
3344{ 4147{
3345 EV_FREQUENT_CHECK; 4148 EV_FREQUENT_CHECK;
3346 4149
3347 clear_pending (EV_A_ (W)w); 4150 clear_pending (EV_A_ (W)w);
3348 4151
… …
3365 4168
3366 EV_FREQUENT_CHECK; 4169 EV_FREQUENT_CHECK;
3367} 4170}
3368 4171
3369ev_tstamp 4172ev_tstamp
3370ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW 4173ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
3371{ 4174{
3372 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4175 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3373} 4176}
3374 4177
3375#if EV_PERIODIC_ENABLE 4178#if EV_PERIODIC_ENABLE
3376void noinline 4179ecb_noinline
4180void
3377ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW 4181ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
3378{ 4182{
3379 if (expect_false (ev_is_active (w))) 4183 if (ecb_expect_false (ev_is_active (w)))
3380 return; 4184 return;
3381 4185
3382 if (w->reschedule_cb) 4186 if (w->reschedule_cb)
3383 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4187 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
3384 else if (w->interval) 4188 else if (w->interval)
… …
3391 4195
3392 EV_FREQUENT_CHECK; 4196 EV_FREQUENT_CHECK;
3393 4197
3394 ++periodiccnt; 4198 ++periodiccnt;
3395 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4199 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
3396 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4200 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
3397 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4201 ANHE_w (periodics [ev_active (w)]) = (WT)w;
3398 ANHE_at_cache (periodics [ev_active (w)]); 4202 ANHE_at_cache (periodics [ev_active (w)]);
3399 upheap (periodics, ev_active (w)); 4203 upheap (periodics, ev_active (w));
3400 4204
3401 EV_FREQUENT_CHECK; 4205 EV_FREQUENT_CHECK;
3402 4206
3403 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4207 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
3404} 4208}
3405 4209
3406void noinline 4210ecb_noinline
4211void
3407ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW 4212ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
3408{ 4213{
3409 clear_pending (EV_A_ (W)w); 4214 clear_pending (EV_A_ (W)w);
3410 if (expect_false (!ev_is_active (w))) 4215 if (ecb_expect_false (!ev_is_active (w)))
3411 return; 4216 return;
3412 4217
3413 EV_FREQUENT_CHECK; 4218 EV_FREQUENT_CHECK;
3414 4219
3415 { 4220 {
… …
3417 4222
3418 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4223 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
3419 4224
3420 --periodiccnt; 4225 --periodiccnt;
3421 4226
3422 if (expect_true (active < periodiccnt + HEAP0)) 4227 if (ecb_expect_true (active < periodiccnt + HEAP0))
3423 { 4228 {
3424 periodics [active] = periodics [periodiccnt + HEAP0]; 4229 periodics [active] = periodics [periodiccnt + HEAP0];
3425 adjustheap (periodics, periodiccnt, active); 4230 adjustheap (periodics, periodiccnt, active);
3426 } 4231 }
3427 } 4232 }
… …
3429 ev_stop (EV_A_ (W)w); 4234 ev_stop (EV_A_ (W)w);
3430 4235
3431 EV_FREQUENT_CHECK; 4236 EV_FREQUENT_CHECK;
3432} 4237}
3433 4238
3434void noinline 4239ecb_noinline
4240void
3435ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW 4241ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
3436{ 4242{
3437 /* TODO: use adjustheap and recalculation */ 4243 /* TODO: use adjustheap and recalculation */
3438 ev_periodic_stop (EV_A_ w); 4244 ev_periodic_stop (EV_A_ w);
3439 ev_periodic_start (EV_A_ w); 4245 ev_periodic_start (EV_A_ w);
3440} 4246}
… …
3444# define SA_RESTART 0 4250# define SA_RESTART 0
3445#endif 4251#endif
3446 4252
3447#if EV_SIGNAL_ENABLE 4253#if EV_SIGNAL_ENABLE
3448 4254
3449void noinline 4255ecb_noinline
4256void
3450ev_signal_start (EV_P_ ev_signal *w) EV_THROW 4257ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
3451{ 4258{
3452 if (expect_false (ev_is_active (w))) 4259 if (ecb_expect_false (ev_is_active (w)))
3453 return; 4260 return;
3454 4261
3455 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4262 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
3456 4263
3457#if EV_MULTIPLICITY 4264#if EV_MULTIPLICITY
3458 assert (("libev: a signal must not be attached to two different loops", 4265 assert (("libev: a signal must not be attached to two different loops",
3459 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4266 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3460 4267
3461 signals [w->signum - 1].loop = EV_A; 4268 signals [w->signum - 1].loop = EV_A;
4269 ECB_MEMORY_FENCE_RELEASE;
3462#endif 4270#endif
3463 4271
3464 EV_FREQUENT_CHECK; 4272 EV_FREQUENT_CHECK;
3465 4273
3466#if EV_USE_SIGNALFD 4274#if EV_USE_SIGNALFD
… …
3525 } 4333 }
3526 4334
3527 EV_FREQUENT_CHECK; 4335 EV_FREQUENT_CHECK;
3528} 4336}
3529 4337
3530void noinline 4338ecb_noinline
4339void
3531ev_signal_stop (EV_P_ ev_signal *w) EV_THROW 4340ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
3532{ 4341{
3533 clear_pending (EV_A_ (W)w); 4342 clear_pending (EV_A_ (W)w);
3534 if (expect_false (!ev_is_active (w))) 4343 if (ecb_expect_false (!ev_is_active (w)))
3535 return; 4344 return;
3536 4345
3537 EV_FREQUENT_CHECK; 4346 EV_FREQUENT_CHECK;
3538 4347
3539 wlist_del (&signals [w->signum - 1].head, (WL)w); 4348 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
3567#endif 4376#endif
3568 4377
3569#if EV_CHILD_ENABLE 4378#if EV_CHILD_ENABLE
3570 4379
3571void 4380void
3572ev_child_start (EV_P_ ev_child *w) EV_THROW 4381ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
3573{ 4382{
3574#if EV_MULTIPLICITY 4383#if EV_MULTIPLICITY
3575 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4384 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3576#endif 4385#endif
3577 if (expect_false (ev_is_active (w))) 4386 if (ecb_expect_false (ev_is_active (w)))
3578 return; 4387 return;
3579 4388
3580 EV_FREQUENT_CHECK; 4389 EV_FREQUENT_CHECK;
3581 4390
3582 ev_start (EV_A_ (W)w, 1); 4391 ev_start (EV_A_ (W)w, 1);
… …
3584 4393
3585 EV_FREQUENT_CHECK; 4394 EV_FREQUENT_CHECK;
3586} 4395}
3587 4396
3588void 4397void
3589ev_child_stop (EV_P_ ev_child *w) EV_THROW 4398ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
3590{ 4399{
3591 clear_pending (EV_A_ (W)w); 4400 clear_pending (EV_A_ (W)w);
3592 if (expect_false (!ev_is_active (w))) 4401 if (ecb_expect_false (!ev_is_active (w)))
3593 return; 4402 return;
3594 4403
3595 EV_FREQUENT_CHECK; 4404 EV_FREQUENT_CHECK;
3596 4405
3597 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); 4406 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
… …
3611 4420
3612#define DEF_STAT_INTERVAL 5.0074891 4421#define DEF_STAT_INTERVAL 5.0074891
3613#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4422#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3614#define MIN_STAT_INTERVAL 0.1074891 4423#define MIN_STAT_INTERVAL 0.1074891
3615 4424
3616static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4425ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
3617 4426
3618#if EV_USE_INOTIFY 4427#if EV_USE_INOTIFY
3619 4428
3620/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4429/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3621# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4430# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3622 4431
3623static void noinline 4432ecb_noinline
4433static void
3624infy_add (EV_P_ ev_stat *w) 4434infy_add (EV_P_ ev_stat *w)
3625{ 4435{
3626 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); 4436 w->wd = inotify_add_watch (fs_fd, w->path,
4437 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4438 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4439 | IN_DONT_FOLLOW | IN_MASK_ADD);
3627 4440
3628 if (w->wd >= 0) 4441 if (w->wd >= 0)
3629 { 4442 {
3630 struct statfs sfs; 4443 struct statfs sfs;
3631 4444
… …
3635 4448
3636 if (!fs_2625) 4449 if (!fs_2625)
3637 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4450 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3638 else if (!statfs (w->path, &sfs) 4451 else if (!statfs (w->path, &sfs)
3639 && (sfs.f_type == 0x1373 /* devfs */ 4452 && (sfs.f_type == 0x1373 /* devfs */
4453 || sfs.f_type == 0x4006 /* fat */
4454 || sfs.f_type == 0x4d44 /* msdos */
3640 || sfs.f_type == 0xEF53 /* ext2/3 */ 4455 || sfs.f_type == 0xEF53 /* ext2/3 */
4456 || sfs.f_type == 0x72b6 /* jffs2 */
4457 || sfs.f_type == 0x858458f6 /* ramfs */
4458 || sfs.f_type == 0x5346544e /* ntfs */
3641 || sfs.f_type == 0x3153464a /* jfs */ 4459 || sfs.f_type == 0x3153464a /* jfs */
4460 || sfs.f_type == 0x9123683e /* btrfs */
3642 || sfs.f_type == 0x52654973 /* reiser3 */ 4461 || sfs.f_type == 0x52654973 /* reiser3 */
3643 || sfs.f_type == 0x01021994 /* tempfs */ 4462 || sfs.f_type == 0x01021994 /* tmpfs */
3644 || sfs.f_type == 0x58465342 /* xfs */)) 4463 || sfs.f_type == 0x58465342 /* xfs */))
3645 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4464 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3646 else 4465 else
3647 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4466 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3648 } 4467 }
… …
3683 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4502 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3684 ev_timer_again (EV_A_ &w->timer); 4503 ev_timer_again (EV_A_ &w->timer);
3685 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4504 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3686} 4505}
3687 4506
3688static void noinline 4507ecb_noinline
4508static void
3689infy_del (EV_P_ ev_stat *w) 4509infy_del (EV_P_ ev_stat *w)
3690{ 4510{
3691 int slot; 4511 int slot;
3692 int wd = w->wd; 4512 int wd = w->wd;
3693 4513
… …
3700 4520
3701 /* remove this watcher, if others are watching it, they will rearm */ 4521 /* remove this watcher, if others are watching it, they will rearm */
3702 inotify_rm_watch (fs_fd, wd); 4522 inotify_rm_watch (fs_fd, wd);
3703} 4523}
3704 4524
3705static void noinline 4525ecb_noinline
4526static void
3706infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4527infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3707{ 4528{
3708 if (slot < 0) 4529 if (slot < 0)
3709 /* overflow, need to check for all hash slots */ 4530 /* overflow, need to check for all hash slots */
3710 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4531 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3746 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4567 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3747 ofs += sizeof (struct inotify_event) + ev->len; 4568 ofs += sizeof (struct inotify_event) + ev->len;
3748 } 4569 }
3749} 4570}
3750 4571
3751inline_size void ecb_cold 4572inline_size ecb_cold
4573void
3752ev_check_2625 (EV_P) 4574ev_check_2625 (EV_P)
3753{ 4575{
3754 /* kernels < 2.6.25 are borked 4576 /* kernels < 2.6.25 are borked
3755 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4577 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3756 */ 4578 */
… …
3846#else 4668#else
3847# define EV_LSTAT(p,b) lstat (p, b) 4669# define EV_LSTAT(p,b) lstat (p, b)
3848#endif 4670#endif
3849 4671
3850void 4672void
3851ev_stat_stat (EV_P_ ev_stat *w) EV_THROW 4673ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3852{ 4674{
3853 if (lstat (w->path, &w->attr) < 0) 4675 if (lstat (w->path, &w->attr) < 0)
3854 w->attr.st_nlink = 0; 4676 w->attr.st_nlink = 0;
3855 else if (!w->attr.st_nlink) 4677 else if (!w->attr.st_nlink)
3856 w->attr.st_nlink = 1; 4678 w->attr.st_nlink = 1;
3857} 4679}
3858 4680
3859static void noinline 4681ecb_noinline
4682static void
3860stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4683stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3861{ 4684{
3862 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4685 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3863 4686
3864 ev_statdata prev = w->attr; 4687 ev_statdata prev = w->attr;
… …
3895 ev_feed_event (EV_A_ w, EV_STAT); 4718 ev_feed_event (EV_A_ w, EV_STAT);
3896 } 4719 }
3897} 4720}
3898 4721
3899void 4722void
3900ev_stat_start (EV_P_ ev_stat *w) EV_THROW 4723ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3901{ 4724{
3902 if (expect_false (ev_is_active (w))) 4725 if (ecb_expect_false (ev_is_active (w)))
3903 return; 4726 return;
3904 4727
3905 ev_stat_stat (EV_A_ w); 4728 ev_stat_stat (EV_A_ w);
3906 4729
3907 if (w->interval < MIN_STAT_INTERVAL && w->interval) 4730 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
3926 4749
3927 EV_FREQUENT_CHECK; 4750 EV_FREQUENT_CHECK;
3928} 4751}
3929 4752
3930void 4753void
3931ev_stat_stop (EV_P_ ev_stat *w) EV_THROW 4754ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3932{ 4755{
3933 clear_pending (EV_A_ (W)w); 4756 clear_pending (EV_A_ (W)w);
3934 if (expect_false (!ev_is_active (w))) 4757 if (ecb_expect_false (!ev_is_active (w)))
3935 return; 4758 return;
3936 4759
3937 EV_FREQUENT_CHECK; 4760 EV_FREQUENT_CHECK;
3938 4761
3939#if EV_USE_INOTIFY 4762#if EV_USE_INOTIFY
… …
3952} 4775}
3953#endif 4776#endif
3954 4777
3955#if EV_IDLE_ENABLE 4778#if EV_IDLE_ENABLE
3956void 4779void
3957ev_idle_start (EV_P_ ev_idle *w) EV_THROW 4780ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3958{ 4781{
3959 if (expect_false (ev_is_active (w))) 4782 if (ecb_expect_false (ev_is_active (w)))
3960 return; 4783 return;
3961 4784
3962 pri_adjust (EV_A_ (W)w); 4785 pri_adjust (EV_A_ (W)w);
3963 4786
3964 EV_FREQUENT_CHECK; 4787 EV_FREQUENT_CHECK;
… …
3967 int active = ++idlecnt [ABSPRI (w)]; 4790 int active = ++idlecnt [ABSPRI (w)];
3968 4791
3969 ++idleall; 4792 ++idleall;
3970 ev_start (EV_A_ (W)w, active); 4793 ev_start (EV_A_ (W)w, active);
3971 4794
3972 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4795 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
3973 idles [ABSPRI (w)][active - 1] = w; 4796 idles [ABSPRI (w)][active - 1] = w;
3974 } 4797 }
3975 4798
3976 EV_FREQUENT_CHECK; 4799 EV_FREQUENT_CHECK;
3977} 4800}
3978 4801
3979void 4802void
3980ev_idle_stop (EV_P_ ev_idle *w) EV_THROW 4803ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3981{ 4804{
3982 clear_pending (EV_A_ (W)w); 4805 clear_pending (EV_A_ (W)w);
3983 if (expect_false (!ev_is_active (w))) 4806 if (ecb_expect_false (!ev_is_active (w)))
3984 return; 4807 return;
3985 4808
3986 EV_FREQUENT_CHECK; 4809 EV_FREQUENT_CHECK;
3987 4810
3988 { 4811 {
… …
3999} 4822}
4000#endif 4823#endif
4001 4824
4002#if EV_PREPARE_ENABLE 4825#if EV_PREPARE_ENABLE
4003void 4826void
4004ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW 4827ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
4005{ 4828{
4006 if (expect_false (ev_is_active (w))) 4829 if (ecb_expect_false (ev_is_active (w)))
4007 return; 4830 return;
4008 4831
4009 EV_FREQUENT_CHECK; 4832 EV_FREQUENT_CHECK;
4010 4833
4011 ev_start (EV_A_ (W)w, ++preparecnt); 4834 ev_start (EV_A_ (W)w, ++preparecnt);
4012 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4835 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
4013 prepares [preparecnt - 1] = w; 4836 prepares [preparecnt - 1] = w;
4014 4837
4015 EV_FREQUENT_CHECK; 4838 EV_FREQUENT_CHECK;
4016} 4839}
4017 4840
4018void 4841void
4019ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW 4842ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
4020{ 4843{
4021 clear_pending (EV_A_ (W)w); 4844 clear_pending (EV_A_ (W)w);
4022 if (expect_false (!ev_is_active (w))) 4845 if (ecb_expect_false (!ev_is_active (w)))
4023 return; 4846 return;
4024 4847
4025 EV_FREQUENT_CHECK; 4848 EV_FREQUENT_CHECK;
4026 4849
4027 { 4850 {
… …
4037} 4860}
4038#endif 4861#endif
4039 4862
4040#if EV_CHECK_ENABLE 4863#if EV_CHECK_ENABLE
4041void 4864void
4042ev_check_start (EV_P_ ev_check *w) EV_THROW 4865ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
4043{ 4866{
4044 if (expect_false (ev_is_active (w))) 4867 if (ecb_expect_false (ev_is_active (w)))
4045 return; 4868 return;
4046 4869
4047 EV_FREQUENT_CHECK; 4870 EV_FREQUENT_CHECK;
4048 4871
4049 ev_start (EV_A_ (W)w, ++checkcnt); 4872 ev_start (EV_A_ (W)w, ++checkcnt);
4050 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4873 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
4051 checks [checkcnt - 1] = w; 4874 checks [checkcnt - 1] = w;
4052 4875
4053 EV_FREQUENT_CHECK; 4876 EV_FREQUENT_CHECK;
4054} 4877}
4055 4878
4056void 4879void
4057ev_check_stop (EV_P_ ev_check *w) EV_THROW 4880ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
4058{ 4881{
4059 clear_pending (EV_A_ (W)w); 4882 clear_pending (EV_A_ (W)w);
4060 if (expect_false (!ev_is_active (w))) 4883 if (ecb_expect_false (!ev_is_active (w)))
4061 return; 4884 return;
4062 4885
4063 EV_FREQUENT_CHECK; 4886 EV_FREQUENT_CHECK;
4064 4887
4065 { 4888 {
… …
4074 EV_FREQUENT_CHECK; 4897 EV_FREQUENT_CHECK;
4075} 4898}
4076#endif 4899#endif
4077 4900
4078#if EV_EMBED_ENABLE 4901#if EV_EMBED_ENABLE
4079void noinline 4902ecb_noinline
4903void
4080ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW 4904ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
4081{ 4905{
4082 ev_run (w->other, EVRUN_NOWAIT); 4906 ev_run (w->other, EVRUN_NOWAIT);
4083} 4907}
4084 4908
4085static void 4909static void
… …
4133 ev_idle_stop (EV_A_ idle); 4957 ev_idle_stop (EV_A_ idle);
4134} 4958}
4135#endif 4959#endif
4136 4960
4137void 4961void
4138ev_embed_start (EV_P_ ev_embed *w) EV_THROW 4962ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
4139{ 4963{
4140 if (expect_false (ev_is_active (w))) 4964 if (ecb_expect_false (ev_is_active (w)))
4141 return; 4965 return;
4142 4966
4143 { 4967 {
4144 EV_P = w->other; 4968 EV_P = w->other;
4145 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4969 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
… …
4164 4988
4165 EV_FREQUENT_CHECK; 4989 EV_FREQUENT_CHECK;
4166} 4990}
4167 4991
4168void 4992void
4169ev_embed_stop (EV_P_ ev_embed *w) EV_THROW 4993ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
4170{ 4994{
4171 clear_pending (EV_A_ (W)w); 4995 clear_pending (EV_A_ (W)w);
4172 if (expect_false (!ev_is_active (w))) 4996 if (ecb_expect_false (!ev_is_active (w)))
4173 return; 4997 return;
4174 4998
4175 EV_FREQUENT_CHECK; 4999 EV_FREQUENT_CHECK;
4176 5000
4177 ev_io_stop (EV_A_ &w->io); 5001 ev_io_stop (EV_A_ &w->io);
… …
4184} 5008}
4185#endif 5009#endif
4186 5010
4187#if EV_FORK_ENABLE 5011#if EV_FORK_ENABLE
4188void 5012void
4189ev_fork_start (EV_P_ ev_fork *w) EV_THROW 5013ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
4190{ 5014{
4191 if (expect_false (ev_is_active (w))) 5015 if (ecb_expect_false (ev_is_active (w)))
4192 return; 5016 return;
4193 5017
4194 EV_FREQUENT_CHECK; 5018 EV_FREQUENT_CHECK;
4195 5019
4196 ev_start (EV_A_ (W)w, ++forkcnt); 5020 ev_start (EV_A_ (W)w, ++forkcnt);
4197 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5021 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
4198 forks [forkcnt - 1] = w; 5022 forks [forkcnt - 1] = w;
4199 5023
4200 EV_FREQUENT_CHECK; 5024 EV_FREQUENT_CHECK;
4201} 5025}
4202 5026
4203void 5027void
4204ev_fork_stop (EV_P_ ev_fork *w) EV_THROW 5028ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
4205{ 5029{
4206 clear_pending (EV_A_ (W)w); 5030 clear_pending (EV_A_ (W)w);
4207 if (expect_false (!ev_is_active (w))) 5031 if (ecb_expect_false (!ev_is_active (w)))
4208 return; 5032 return;
4209 5033
4210 EV_FREQUENT_CHECK; 5034 EV_FREQUENT_CHECK;
4211 5035
4212 { 5036 {
… …
4222} 5046}
4223#endif 5047#endif
4224 5048
4225#if EV_CLEANUP_ENABLE 5049#if EV_CLEANUP_ENABLE
4226void 5050void
4227ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW 5051ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4228{ 5052{
4229 if (expect_false (ev_is_active (w))) 5053 if (ecb_expect_false (ev_is_active (w)))
4230 return; 5054 return;
4231 5055
4232 EV_FREQUENT_CHECK; 5056 EV_FREQUENT_CHECK;
4233 5057
4234 ev_start (EV_A_ (W)w, ++cleanupcnt); 5058 ev_start (EV_A_ (W)w, ++cleanupcnt);
4235 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 5059 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
4236 cleanups [cleanupcnt - 1] = w; 5060 cleanups [cleanupcnt - 1] = w;
4237 5061
4238 /* cleanup watchers should never keep a refcount on the loop */ 5062 /* cleanup watchers should never keep a refcount on the loop */
4239 ev_unref (EV_A); 5063 ev_unref (EV_A);
4240 EV_FREQUENT_CHECK; 5064 EV_FREQUENT_CHECK;
4241} 5065}
4242 5066
4243void 5067void
4244ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW 5068ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4245{ 5069{
4246 clear_pending (EV_A_ (W)w); 5070 clear_pending (EV_A_ (W)w);
4247 if (expect_false (!ev_is_active (w))) 5071 if (ecb_expect_false (!ev_is_active (w)))
4248 return; 5072 return;
4249 5073
4250 EV_FREQUENT_CHECK; 5074 EV_FREQUENT_CHECK;
4251 ev_ref (EV_A); 5075 ev_ref (EV_A);
4252 5076
… …
4263} 5087}
4264#endif 5088#endif
4265 5089
4266#if EV_ASYNC_ENABLE 5090#if EV_ASYNC_ENABLE
4267void 5091void
4268ev_async_start (EV_P_ ev_async *w) EV_THROW 5092ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4269{ 5093{
4270 if (expect_false (ev_is_active (w))) 5094 if (ecb_expect_false (ev_is_active (w)))
4271 return; 5095 return;
4272 5096
4273 w->sent = 0; 5097 w->sent = 0;
4274 5098
4275 evpipe_init (EV_A); 5099 evpipe_init (EV_A);
4276 5100
4277 EV_FREQUENT_CHECK; 5101 EV_FREQUENT_CHECK;
4278 5102
4279 ev_start (EV_A_ (W)w, ++asynccnt); 5103 ev_start (EV_A_ (W)w, ++asynccnt);
4280 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5104 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
4281 asyncs [asynccnt - 1] = w; 5105 asyncs [asynccnt - 1] = w;
4282 5106
4283 EV_FREQUENT_CHECK; 5107 EV_FREQUENT_CHECK;
4284} 5108}
4285 5109
4286void 5110void
4287ev_async_stop (EV_P_ ev_async *w) EV_THROW 5111ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4288{ 5112{
4289 clear_pending (EV_A_ (W)w); 5113 clear_pending (EV_A_ (W)w);
4290 if (expect_false (!ev_is_active (w))) 5114 if (ecb_expect_false (!ev_is_active (w)))
4291 return; 5115 return;
4292 5116
4293 EV_FREQUENT_CHECK; 5117 EV_FREQUENT_CHECK;
4294 5118
4295 { 5119 {
… …
4303 5127
4304 EV_FREQUENT_CHECK; 5128 EV_FREQUENT_CHECK;
4305} 5129}
4306 5130
4307void 5131void
4308ev_async_send (EV_P_ ev_async *w) EV_THROW 5132ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
4309{ 5133{
4310 w->sent = 1; 5134 w->sent = 1;
4311 evpipe_write (EV_A_ &async_pending); 5135 evpipe_write (EV_A_ &async_pending);
4312} 5136}
4313#endif 5137#endif
… …
4350 5174
4351 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5175 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
4352} 5176}
4353 5177
4354void 5178void
4355ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW 5179ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
4356{ 5180{
4357 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5181 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
4358
4359 if (expect_false (!once))
4360 {
4361 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
4362 return;
4363 }
4364 5182
4365 once->cb = cb; 5183 once->cb = cb;
4366 once->arg = arg; 5184 once->arg = arg;
4367 5185
4368 ev_init (&once->io, once_cb_io); 5186 ev_init (&once->io, once_cb_io);
… …
4381} 5199}
4382 5200
4383/*****************************************************************************/ 5201/*****************************************************************************/
4384 5202
4385#if EV_WALK_ENABLE 5203#if EV_WALK_ENABLE
4386void ecb_cold 5204ecb_cold
5205void
4387ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW 5206ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
4388{ 5207{
4389 int i, j; 5208 int i, j;
4390 ev_watcher_list *wl, *wn; 5209 ev_watcher_list *wl, *wn;
4391 5210
4392 if (types & (EV_IO | EV_EMBED)) 5211 if (types & (EV_IO | EV_EMBED))

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