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Comparing libev/ev.c (file contents):
Revision 1.417 by root, Mon Apr 2 20:22:30 2012 UTC vs.
Revision 1.505 by root, Wed Jul 10 14:25:35 2019 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007-2019 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
… …
43# include EV_CONFIG_H 43# include EV_CONFIG_H
44# else 44# else
45# include "config.h" 45# include "config.h"
46# endif 46# endif
47 47
48#if HAVE_FLOOR 48# if HAVE_FLOOR
49# ifndef EV_USE_FLOOR 49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1 50# define EV_USE_FLOOR 1
51# endif
51# endif 52# endif
52#endif
53 53
54# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
55# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
56# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
57# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
… …
113# define EV_USE_EPOLL EV_FEATURE_BACKENDS 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
114# endif 114# endif
115# else 115# else
116# undef EV_USE_EPOLL 116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0 117# define EV_USE_EPOLL 0
118# endif
119
120# if HAVE_LINUX_AIO_ABI_H
121# ifndef EV_USE_LINUXAIO
122# define EV_USE_LINUXAIO EV_FEATURE_BACKENDS
123# endif
124# else
125# undef EV_USE_LINUXAIO
126# define EV_USE_LINUXAIO 0
118# endif 127# endif
119 128
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H 129# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
121# ifndef EV_USE_KQUEUE 130# ifndef EV_USE_KQUEUE
122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS 131# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
… …
162# define EV_USE_EVENTFD 0 171# define EV_USE_EVENTFD 0
163# endif 172# endif
164 173
165#endif 174#endif
166 175
176/* OS X, in its infinite idiocy, actually HARDCODES
177 * a limit of 1024 into their select. Where people have brains,
178 * OS X engineers apparently have a vacuum. Or maybe they were
179 * ordered to have a vacuum, or they do anything for money.
180 * This might help. Or not.
181 * Note that this must be defined early, as other include files
182 * will rely on this define as well.
183 */
184#define _DARWIN_UNLIMITED_SELECT 1
185
167#include <stdlib.h> 186#include <stdlib.h>
168#include <string.h> 187#include <string.h>
169#include <fcntl.h> 188#include <fcntl.h>
170#include <stddef.h> 189#include <stddef.h>
171 190
… …
201# include <sys/wait.h> 220# include <sys/wait.h>
202# include <unistd.h> 221# include <unistd.h>
203#else 222#else
204# include <io.h> 223# include <io.h>
205# define WIN32_LEAN_AND_MEAN 224# define WIN32_LEAN_AND_MEAN
225# include <winsock2.h>
206# include <windows.h> 226# include <windows.h>
207# ifndef EV_SELECT_IS_WINSOCKET 227# ifndef EV_SELECT_IS_WINSOCKET
208# define EV_SELECT_IS_WINSOCKET 1 228# define EV_SELECT_IS_WINSOCKET 1
209# endif 229# endif
210# undef EV_AVOID_STDIO 230# undef EV_AVOID_STDIO
211#endif 231#endif
212
213/* OS X, in its infinite idiocy, actually HARDCODES
214 * a limit of 1024 into their select. Where people have brains,
215 * OS X engineers apparently have a vacuum. Or maybe they were
216 * ordered to have a vacuum, or they do anything for money.
217 * This might help. Or not.
218 */
219#define _DARWIN_UNLIMITED_SELECT 1
220 232
221/* this block tries to deduce configuration from header-defined symbols and defaults */ 233/* this block tries to deduce configuration from header-defined symbols and defaults */
222 234
223/* try to deduce the maximum number of signals on this platform */ 235/* try to deduce the maximum number of signals on this platform */
224#if defined EV_NSIG 236#if defined EV_NSIG
… …
240#elif defined SIGARRAYSIZE 252#elif defined SIGARRAYSIZE
241# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 253# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
242#elif defined _sys_nsig 254#elif defined _sys_nsig
243# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 255# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
244#else 256#else
245# error "unable to find value for NSIG, please report" 257# define EV_NSIG (8 * sizeof (sigset_t) + 1)
246/* to make it compile regardless, just remove the above line, */
247/* but consider reporting it, too! :) */
248# define EV_NSIG 65
249#endif 258#endif
250 259
251#ifndef EV_USE_FLOOR 260#ifndef EV_USE_FLOOR
252# define EV_USE_FLOOR 0 261# define EV_USE_FLOOR 0
253#endif 262#endif
254 263
255#ifndef EV_USE_CLOCK_SYSCALL 264#ifndef EV_USE_CLOCK_SYSCALL
256# if __linux && __GLIBC__ >= 2 265# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
257# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 266# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
258# else 267# else
259# define EV_USE_CLOCK_SYSCALL 0 268# define EV_USE_CLOCK_SYSCALL 0
269# endif
270#endif
271
272#if !(_POSIX_TIMERS > 0)
273# ifndef EV_USE_MONOTONIC
274# define EV_USE_MONOTONIC 0
275# endif
276# ifndef EV_USE_REALTIME
277# define EV_USE_REALTIME 0
260# endif 278# endif
261#endif 279#endif
262 280
263#ifndef EV_USE_MONOTONIC 281#ifndef EV_USE_MONOTONIC
264# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0 282# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
… …
306 324
307#ifndef EV_USE_PORT 325#ifndef EV_USE_PORT
308# define EV_USE_PORT 0 326# define EV_USE_PORT 0
309#endif 327#endif
310 328
329#ifndef EV_USE_LINUXAIO
330# if __linux /* libev currently assumes linux/aio_abi.h is always available on linux */
331# define EV_USE_LINUXAIO 1
332# else
333# define EV_USE_LINUXAIO 0
334# endif
335#endif
336
337#ifndef EV_USE_IOURING
338# if __linux
339# define EV_USE_IOURING 0
340# else
341# define EV_USE_IOURING 0
342# endif
343#endif
344
311#ifndef EV_USE_INOTIFY 345#ifndef EV_USE_INOTIFY
312# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 346# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
313# define EV_USE_INOTIFY EV_FEATURE_OS 347# define EV_USE_INOTIFY EV_FEATURE_OS
314# else 348# else
315# define EV_USE_INOTIFY 0 349# define EV_USE_INOTIFY 0
… …
356 390
357#ifndef EV_HEAP_CACHE_AT 391#ifndef EV_HEAP_CACHE_AT
358# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 392# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
359#endif 393#endif
360 394
395#ifdef __ANDROID__
396/* supposedly, android doesn't typedef fd_mask */
397# undef EV_USE_SELECT
398# define EV_USE_SELECT 0
399/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
400# undef EV_USE_CLOCK_SYSCALL
401# define EV_USE_CLOCK_SYSCALL 0
402#endif
403
404/* aix's poll.h seems to cause lots of trouble */
405#ifdef _AIX
406/* AIX has a completely broken poll.h header */
407# undef EV_USE_POLL
408# define EV_USE_POLL 0
409#endif
410
361/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 411/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
362/* which makes programs even slower. might work on other unices, too. */ 412/* which makes programs even slower. might work on other unices, too. */
363#if EV_USE_CLOCK_SYSCALL 413#if EV_USE_CLOCK_SYSCALL
364# include <syscall.h> 414# include <sys/syscall.h>
365# ifdef SYS_clock_gettime 415# ifdef SYS_clock_gettime
366# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 416# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
367# undef EV_USE_MONOTONIC 417# undef EV_USE_MONOTONIC
368# define EV_USE_MONOTONIC 1 418# define EV_USE_MONOTONIC 1
419# define EV_NEED_SYSCALL 1
369# else 420# else
370# undef EV_USE_CLOCK_SYSCALL 421# undef EV_USE_CLOCK_SYSCALL
371# define EV_USE_CLOCK_SYSCALL 0 422# define EV_USE_CLOCK_SYSCALL 0
372# endif 423# endif
373#endif 424#endif
374 425
375/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 426/* this block fixes any misconfiguration where we know we run into trouble otherwise */
376 427
377#ifdef _AIX
378/* AIX has a completely broken poll.h header */
379# undef EV_USE_POLL
380# define EV_USE_POLL 0
381#endif
382
383#ifndef CLOCK_MONOTONIC 428#ifndef CLOCK_MONOTONIC
384# undef EV_USE_MONOTONIC 429# undef EV_USE_MONOTONIC
385# define EV_USE_MONOTONIC 0 430# define EV_USE_MONOTONIC 0
386#endif 431#endif
387 432
… …
397 442
398#if !EV_USE_NANOSLEEP 443#if !EV_USE_NANOSLEEP
399/* hp-ux has it in sys/time.h, which we unconditionally include above */ 444/* hp-ux has it in sys/time.h, which we unconditionally include above */
400# if !defined _WIN32 && !defined __hpux 445# if !defined _WIN32 && !defined __hpux
401# include <sys/select.h> 446# include <sys/select.h>
447# endif
448#endif
449
450#if EV_USE_LINUXAIO
451# include <sys/syscall.h>
452# if SYS_io_getevents && EV_USE_EPOLL /* linuxaio backend requires epoll backend */
453# define EV_NEED_SYSCALL 1
454# else
455# undef EV_USE_LINUXAIO
456# define EV_USE_LINUXAIO 0
457# endif
458#endif
459
460#if EV_USE_IOURING
461# include <sys/syscall.h>
462# if !SYS_io_uring_setup && __linux && !__alpha
463# define SYS_io_uring_setup 425
464# define SYS_io_uring_enter 426
465# define SYS_io_uring_wregister 427
466# endif
467# if SYS_io_uring_setup && EV_USE_EPOLL /* iouring backend requires epoll backend */
468# define EV_NEED_SYSCALL 1
469# else
470# undef EV_USE_IOURING
471# define EV_USE_IOURING 0
402# endif 472# endif
403#endif 473#endif
404 474
405#if EV_USE_INOTIFY 475#if EV_USE_INOTIFY
406# include <sys/statfs.h> 476# include <sys/statfs.h>
… …
408/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 478/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
409# ifndef IN_DONT_FOLLOW 479# ifndef IN_DONT_FOLLOW
410# undef EV_USE_INOTIFY 480# undef EV_USE_INOTIFY
411# define EV_USE_INOTIFY 0 481# define EV_USE_INOTIFY 0
412# endif 482# endif
413#endif
414
415#if EV_SELECT_IS_WINSOCKET
416# include <winsock.h>
417#endif 483#endif
418 484
419#if EV_USE_EVENTFD 485#if EV_USE_EVENTFD
420/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 486/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
421# include <stdint.h> 487# include <stdint.h>
… …
452 uint32_t ssi_signo; 518 uint32_t ssi_signo;
453 char pad[128 - sizeof (uint32_t)]; 519 char pad[128 - sizeof (uint32_t)];
454}; 520};
455#endif 521#endif
456 522
457/**/ 523/*****************************************************************************/
458 524
459#if EV_VERIFY >= 3 525#if EV_VERIFY >= 3
460# define EV_FREQUENT_CHECK ev_verify (EV_A) 526# define EV_FREQUENT_CHECK ev_verify (EV_A)
461#else 527#else
462# define EV_FREQUENT_CHECK do { } while (0) 528# define EV_FREQUENT_CHECK do { } while (0)
… …
467 * This value is good at least till the year 4000. 533 * This value is good at least till the year 4000.
468 */ 534 */
469#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */ 535#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
470/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */ 536/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
471 537
472#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 538#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
473#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 539#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
540
541/* find a portable timestamp that is "always" in the future but fits into time_t.
542 * this is quite hard, and we are mostly guessing - we handle 32 bit signed/unsigned time_t,
543 * and sizes larger than 32 bit, and maybe the unlikely floating point time_t */
544#define EV_TSTAMP_HUGE \
545 (sizeof (time_t) >= 8 ? 10000000000000. \
546 : 0 < (time_t)4294967295 ? 4294967295. \
547 : 2147483647.) \
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)
551#define EV_TV_GET(tv) ((tv).tv_sec + (tv).tv_usec * 1e6)
552#define EV_TS_GET(ts) ((ts).tv_sec + (ts).tv_nsec * 1e9)
477 553
478/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ 554/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
479/* ECB.H BEGIN */ 555/* ECB.H BEGIN */
480/* 556/*
481 * libecb - http://software.schmorp.de/pkg/libecb 557 * libecb - http://software.schmorp.de/pkg/libecb
482 * 558 *
483 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de> 559 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
484 * Copyright (©) 2011 Emanuele Giaquinta 560 * Copyright (©) 2011 Emanuele Giaquinta
485 * All rights reserved. 561 * All rights reserved.
486 * 562 *
487 * Redistribution and use in source and binary forms, with or without modifica- 563 * Redistribution and use in source and binary forms, with or without modifica-
488 * tion, are permitted provided that the following conditions are met: 564 * tion, are permitted provided that the following conditions are met:
… …
502 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 578 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
503 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 579 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
504 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- 580 * 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 581 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
506 * OF THE POSSIBILITY OF SUCH DAMAGE. 582 * OF THE POSSIBILITY OF SUCH DAMAGE.
583 *
584 * Alternatively, the contents of this file may be used under the terms of
585 * the GNU General Public License ("GPL") version 2 or any later version,
586 * in which case the provisions of the GPL are applicable instead of
587 * the above. If you wish to allow the use of your version of this file
588 * only under the terms of the GPL and not to allow others to use your
589 * version of this file under the BSD license, indicate your decision
590 * by deleting the provisions above and replace them with the notice
591 * and other provisions required by the GPL. If you do not delete the
592 * provisions above, a recipient may use your version of this file under
593 * either the BSD or the GPL.
507 */ 594 */
508 595
509#ifndef ECB_H 596#ifndef ECB_H
510#define ECB_H 597#define ECB_H
598
599/* 16 bits major, 16 bits minor */
600#define ECB_VERSION 0x00010006
511 601
512#ifdef _WIN32 602#ifdef _WIN32
513 typedef signed char int8_t; 603 typedef signed char int8_t;
514 typedef unsigned char uint8_t; 604 typedef unsigned char uint8_t;
515 typedef signed short int16_t; 605 typedef signed short int16_t;
… …
521 typedef unsigned long long uint64_t; 611 typedef unsigned long long uint64_t;
522 #else /* _MSC_VER || __BORLANDC__ */ 612 #else /* _MSC_VER || __BORLANDC__ */
523 typedef signed __int64 int64_t; 613 typedef signed __int64 int64_t;
524 typedef unsigned __int64 uint64_t; 614 typedef unsigned __int64 uint64_t;
525 #endif 615 #endif
616 #ifdef _WIN64
617 #define ECB_PTRSIZE 8
618 typedef uint64_t uintptr_t;
619 typedef int64_t intptr_t;
620 #else
621 #define ECB_PTRSIZE 4
622 typedef uint32_t uintptr_t;
623 typedef int32_t intptr_t;
624 #endif
526#else 625#else
527 #include <inttypes.h> 626 #include <inttypes.h>
627 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
628 #define ECB_PTRSIZE 8
629 #else
630 #define ECB_PTRSIZE 4
631 #endif
632#endif
633
634#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
635#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
636
637/* work around x32 idiocy by defining proper macros */
638#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
639 #if _ILP32
640 #define ECB_AMD64_X32 1
641 #else
642 #define ECB_AMD64 1
643 #endif
528#endif 644#endif
529 645
530/* many compilers define _GNUC_ to some versions but then only implement 646/* many compilers define _GNUC_ to some versions but then only implement
531 * what their idiot authors think are the "more important" extensions, 647 * what their idiot authors think are the "more important" extensions,
532 * causing enormous grief in return for some better fake benchmark numbers. 648 * causing enormous grief in return for some better fake benchmark numbers.
533 * or so. 649 * or so.
534 * we try to detect these and simply assume they are not gcc - if they have 650 * 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. 651 * an issue with that they should have done it right in the first place.
536 */ 652 */
537#ifndef ECB_GCC_VERSION
538 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__ 653#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
539 #define ECB_GCC_VERSION(major,minor) 0 654 #define ECB_GCC_VERSION(major,minor) 0
540 #else 655#else
541 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) 656 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
542 #endif 657#endif
658
659#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
660
661#if __clang__ && defined __has_builtin
662 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
663#else
664 #define ECB_CLANG_BUILTIN(x) 0
665#endif
666
667#if __clang__ && defined __has_extension
668 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
669#else
670 #define ECB_CLANG_EXTENSION(x) 0
671#endif
672
673#define ECB_CPP (__cplusplus+0)
674#define ECB_CPP11 (__cplusplus >= 201103L)
675#define ECB_CPP14 (__cplusplus >= 201402L)
676#define ECB_CPP17 (__cplusplus >= 201703L)
677
678#if ECB_CPP
679 #define ECB_C 0
680 #define ECB_STDC_VERSION 0
681#else
682 #define ECB_C 1
683 #define ECB_STDC_VERSION __STDC_VERSION__
684#endif
685
686#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
687#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
688#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
689
690#if ECB_CPP
691 #define ECB_EXTERN_C extern "C"
692 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
693 #define ECB_EXTERN_C_END }
694#else
695 #define ECB_EXTERN_C extern
696 #define ECB_EXTERN_C_BEG
697 #define ECB_EXTERN_C_END
543#endif 698#endif
544 699
545/*****************************************************************************/ 700/*****************************************************************************/
546 701
547/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ 702/* 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 */ 703/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
549 704
550#if ECB_NO_THREADS 705#if ECB_NO_THREADS
551# define ECB_NO_SMP 1 706 #define ECB_NO_SMP 1
552#endif 707#endif
553 708
554#if ECB_NO_THREADS || ECB_NO_SMP 709#if ECB_NO_SMP
555 #define ECB_MEMORY_FENCE do { } while (0) 710 #define ECB_MEMORY_FENCE do { } while (0)
711#endif
712
713/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
714#if __xlC__ && ECB_CPP
715 #include <builtins.h>
716#endif
717
718#if 1400 <= _MSC_VER
719 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
556#endif 720#endif
557 721
558#ifndef ECB_MEMORY_FENCE 722#ifndef ECB_MEMORY_FENCE
559 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 723 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
724 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
560 #if __i386 || __i386__ 725 #if __i386 || __i386__
561 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") 726 #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 */ 727 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
563 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */ 728 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
564 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__ 729 #elif ECB_GCC_AMD64
565 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 730 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
566 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory") 731 #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 */ 732 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
568 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 733 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
569 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 734 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
735 #elif defined __ARM_ARCH_2__ \
736 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
737 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
738 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
739 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
740 || defined __ARM_ARCH_5TEJ__
741 /* 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__ \ 742 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
571 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ 743 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
744 || defined __ARM_ARCH_6T2__
572 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") 745 #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__ \ 746 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
574 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__ 747 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
575 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") 748 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
576 #elif __sparc || __sparc__ 749 #elif __aarch64__
750 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
751 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
577 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad | " : : : "memory") 752 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
578 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") 753 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
579 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") 754 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
580 #elif defined __s390__ || defined __s390x__ 755 #elif defined __s390__ || defined __s390x__
581 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") 756 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
582 #elif defined __mips__ 757 #elif defined __mips__
758 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
759 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
760 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
761 #elif defined __alpha__
583 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 762 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
763 #elif defined __hppa__
764 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
765 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
766 #elif defined __ia64__
767 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
768 #elif defined __m68k__
769 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
770 #elif defined __m88k__
771 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
772 #elif defined __sh__
773 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
584 #endif 774 #endif
585 #endif 775 #endif
586#endif 776#endif
587 777
588#ifndef ECB_MEMORY_FENCE 778#ifndef ECB_MEMORY_FENCE
779 #if ECB_GCC_VERSION(4,7)
780 /* see comment below (stdatomic.h) about the C11 memory model. */
781 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
782 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
783 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
784 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
785
786 #elif ECB_CLANG_EXTENSION(c_atomic)
787 /* see comment below (stdatomic.h) about the C11 memory model. */
788 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
789 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
790 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
791 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
792
589 #if ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ 793 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
590 #define ECB_MEMORY_FENCE __sync_synchronize () 794 #define ECB_MEMORY_FENCE __sync_synchronize ()
591 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */ 795 #elif _MSC_VER >= 1500 /* VC++ 2008 */
592 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */ 796 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
797 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
798 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
799 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
800 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
593 #elif _MSC_VER >= 1400 /* VC++ 2005 */ 801 #elif _MSC_VER >= 1400 /* VC++ 2005 */
594 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) 802 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
595 #define ECB_MEMORY_FENCE _ReadWriteBarrier () 803 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
596 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ 804 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
597 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () 805 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
598 #elif defined _WIN32 806 #elif defined _WIN32
599 #include <WinNT.h> 807 #include <WinNT.h>
600 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ 808 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
601 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 809 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
602 #include <mbarrier.h> 810 #include <mbarrier.h>
603 #define ECB_MEMORY_FENCE __machine_rw_barrier () 811 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
604 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier () 812 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
605 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier () 813 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
814 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
606 #elif __xlC__ 815 #elif __xlC__
607 #define ECB_MEMORY_FENCE __sync () 816 #define ECB_MEMORY_FENCE __sync ()
817 #endif
818#endif
819
820#ifndef ECB_MEMORY_FENCE
821 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
822 /* we assume that these memory fences work on all variables/all memory accesses, */
823 /* not just C11 atomics and atomic accesses */
824 #include <stdatomic.h>
825 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
826 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
827 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
608 #endif 828 #endif
609#endif 829#endif
610 830
611#ifndef ECB_MEMORY_FENCE 831#ifndef ECB_MEMORY_FENCE
612 #if !ECB_AVOID_PTHREADS 832 #if !ECB_AVOID_PTHREADS
… …
632 852
633#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE 853#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
634 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 854 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
635#endif 855#endif
636 856
857#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
858 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
859#endif
860
637/*****************************************************************************/ 861/*****************************************************************************/
638 862
639#define ECB_C99 (__STDC_VERSION__ >= 199901L) 863#if ECB_CPP
640
641#if __cplusplus
642 #define ecb_inline static inline 864 #define ecb_inline static inline
643#elif ECB_GCC_VERSION(2,5) 865#elif ECB_GCC_VERSION(2,5)
644 #define ecb_inline static __inline__ 866 #define ecb_inline static __inline__
645#elif ECB_C99 867#elif ECB_C99
646 #define ecb_inline static inline 868 #define ecb_inline static inline
… …
660 882
661#define ECB_CONCAT_(a, b) a ## b 883#define ECB_CONCAT_(a, b) a ## b
662#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) 884#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
663#define ECB_STRINGIFY_(a) # a 885#define ECB_STRINGIFY_(a) # a
664#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) 886#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
887#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
665 888
666#define ecb_function_ ecb_inline 889#define ecb_function_ ecb_inline
667 890
668#if ECB_GCC_VERSION(3,1) 891#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
669 #define ecb_attribute(attrlist) __attribute__(attrlist) 892 #define ecb_attribute(attrlist) __attribute__ (attrlist)
893#else
894 #define ecb_attribute(attrlist)
895#endif
896
897#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
670 #define ecb_is_constant(expr) __builtin_constant_p (expr) 898 #define ecb_is_constant(expr) __builtin_constant_p (expr)
899#else
900 /* possible C11 impl for integral types
901 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
902 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
903
904 #define ecb_is_constant(expr) 0
905#endif
906
907#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
671 #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) 908 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
909#else
910 #define ecb_expect(expr,value) (expr)
911#endif
912
913#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
672 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) 914 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
673#else 915#else
674 #define ecb_attribute(attrlist)
675 #define ecb_is_constant(expr) 0
676 #define ecb_expect(expr,value) (expr)
677 #define ecb_prefetch(addr,rw,locality) 916 #define ecb_prefetch(addr,rw,locality)
678#endif 917#endif
679 918
680/* no emulation for ecb_decltype */ 919/* no emulation for ecb_decltype */
681#if ECB_GCC_VERSION(4,5) 920#if ECB_CPP11
921 // older implementations might have problems with decltype(x)::type, work around it
922 template<class T> struct ecb_decltype_t { typedef T type; };
682 #define ecb_decltype(x) __decltype(x) 923 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
683#elif ECB_GCC_VERSION(3,0) 924#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
684 #define ecb_decltype(x) __typeof(x) 925 #define ecb_decltype(x) __typeof__ (x)
685#endif 926#endif
686 927
928#if _MSC_VER >= 1300
929 #define ecb_deprecated __declspec (deprecated)
930#else
931 #define ecb_deprecated ecb_attribute ((__deprecated__))
932#endif
933
934#if _MSC_VER >= 1500
935 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
936#elif ECB_GCC_VERSION(4,5)
937 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
938#else
939 #define ecb_deprecated_message(msg) ecb_deprecated
940#endif
941
942#if _MSC_VER >= 1400
943 #define ecb_noinline __declspec (noinline)
944#else
687#define ecb_noinline ecb_attribute ((__noinline__)) 945 #define ecb_noinline ecb_attribute ((__noinline__))
688#define ecb_noreturn ecb_attribute ((__noreturn__)) 946#endif
947
689#define ecb_unused ecb_attribute ((__unused__)) 948#define ecb_unused ecb_attribute ((__unused__))
690#define ecb_const ecb_attribute ((__const__)) 949#define ecb_const ecb_attribute ((__const__))
691#define ecb_pure ecb_attribute ((__pure__)) 950#define ecb_pure ecb_attribute ((__pure__))
951
952#if ECB_C11 || __IBMC_NORETURN
953 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
954 #define ecb_noreturn _Noreturn
955#elif ECB_CPP11
956 #define ecb_noreturn [[noreturn]]
957#elif _MSC_VER >= 1200
958 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
959 #define ecb_noreturn __declspec (noreturn)
960#else
961 #define ecb_noreturn ecb_attribute ((__noreturn__))
962#endif
692 963
693#if ECB_GCC_VERSION(4,3) 964#if ECB_GCC_VERSION(4,3)
694 #define ecb_artificial ecb_attribute ((__artificial__)) 965 #define ecb_artificial ecb_attribute ((__artificial__))
695 #define ecb_hot ecb_attribute ((__hot__)) 966 #define ecb_hot ecb_attribute ((__hot__))
696 #define ecb_cold ecb_attribute ((__cold__)) 967 #define ecb_cold ecb_attribute ((__cold__))
… …
708/* for compatibility to the rest of the world */ 979/* for compatibility to the rest of the world */
709#define ecb_likely(expr) ecb_expect_true (expr) 980#define ecb_likely(expr) ecb_expect_true (expr)
710#define ecb_unlikely(expr) ecb_expect_false (expr) 981#define ecb_unlikely(expr) ecb_expect_false (expr)
711 982
712/* count trailing zero bits and count # of one bits */ 983/* count trailing zero bits and count # of one bits */
713#if ECB_GCC_VERSION(3,4) 984#if ECB_GCC_VERSION(3,4) \
985 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
986 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
987 && ECB_CLANG_BUILTIN(__builtin_popcount))
714 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */ 988 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
715 #define ecb_ld32(x) (__builtin_clz (x) ^ 31) 989 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
716 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) 990 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
717 #define ecb_ctz32(x) __builtin_ctz (x) 991 #define ecb_ctz32(x) __builtin_ctz (x)
718 #define ecb_ctz64(x) __builtin_ctzll (x) 992 #define ecb_ctz64(x) __builtin_ctzll (x)
719 #define ecb_popcount32(x) __builtin_popcount (x) 993 #define ecb_popcount32(x) __builtin_popcount (x)
720 /* no popcountll */ 994 /* no popcountll */
721#else 995#else
722 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; 996 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
723 ecb_function_ int 997 ecb_function_ ecb_const int
724 ecb_ctz32 (uint32_t x) 998 ecb_ctz32 (uint32_t x)
725 { 999 {
1000#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1001 unsigned long r;
1002 _BitScanForward (&r, x);
1003 return (int)r;
1004#else
726 int r = 0; 1005 int r = 0;
727 1006
728 x &= ~x + 1; /* this isolates the lowest bit */ 1007 x &= ~x + 1; /* this isolates the lowest bit */
729 1008
730#if ECB_branchless_on_i386 1009#if ECB_branchless_on_i386
… …
740 if (x & 0xff00ff00) r += 8; 1019 if (x & 0xff00ff00) r += 8;
741 if (x & 0xffff0000) r += 16; 1020 if (x & 0xffff0000) r += 16;
742#endif 1021#endif
743 1022
744 return r; 1023 return r;
1024#endif
745 } 1025 }
746 1026
747 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; 1027 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
748 ecb_function_ int 1028 ecb_function_ ecb_const int
749 ecb_ctz64 (uint64_t x) 1029 ecb_ctz64 (uint64_t x)
750 { 1030 {
1031#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1032 unsigned long r;
1033 _BitScanForward64 (&r, x);
1034 return (int)r;
1035#else
751 int shift = x & 0xffffffffU ? 0 : 32; 1036 int shift = x & 0xffffffff ? 0 : 32;
752 return ecb_ctz32 (x >> shift) + shift; 1037 return ecb_ctz32 (x >> shift) + shift;
1038#endif
753 } 1039 }
754 1040
755 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; 1041 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
756 ecb_function_ int 1042 ecb_function_ ecb_const int
757 ecb_popcount32 (uint32_t x) 1043 ecb_popcount32 (uint32_t x)
758 { 1044 {
759 x -= (x >> 1) & 0x55555555; 1045 x -= (x >> 1) & 0x55555555;
760 x = ((x >> 2) & 0x33333333) + (x & 0x33333333); 1046 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
761 x = ((x >> 4) + x) & 0x0f0f0f0f; 1047 x = ((x >> 4) + x) & 0x0f0f0f0f;
762 x *= 0x01010101; 1048 x *= 0x01010101;
763 1049
764 return x >> 24; 1050 return x >> 24;
765 } 1051 }
766 1052
767 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; 1053 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
768 ecb_function_ int ecb_ld32 (uint32_t x) 1054 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
769 { 1055 {
1056#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1057 unsigned long r;
1058 _BitScanReverse (&r, x);
1059 return (int)r;
1060#else
770 int r = 0; 1061 int r = 0;
771 1062
772 if (x >> 16) { x >>= 16; r += 16; } 1063 if (x >> 16) { x >>= 16; r += 16; }
773 if (x >> 8) { x >>= 8; r += 8; } 1064 if (x >> 8) { x >>= 8; r += 8; }
774 if (x >> 4) { x >>= 4; r += 4; } 1065 if (x >> 4) { x >>= 4; r += 4; }
775 if (x >> 2) { x >>= 2; r += 2; } 1066 if (x >> 2) { x >>= 2; r += 2; }
776 if (x >> 1) { r += 1; } 1067 if (x >> 1) { r += 1; }
777 1068
778 return r; 1069 return r;
1070#endif
779 } 1071 }
780 1072
781 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; 1073 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
782 ecb_function_ int ecb_ld64 (uint64_t x) 1074 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
783 { 1075 {
1076#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1077 unsigned long r;
1078 _BitScanReverse64 (&r, x);
1079 return (int)r;
1080#else
784 int r = 0; 1081 int r = 0;
785 1082
786 if (x >> 32) { x >>= 32; r += 32; } 1083 if (x >> 32) { x >>= 32; r += 32; }
787 1084
788 return r + ecb_ld32 (x); 1085 return r + ecb_ld32 (x);
1086#endif
789 } 1087 }
790#endif 1088#endif
791 1089
1090ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1091ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1092ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1093ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1094
792ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const; 1095ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
793ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) 1096ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
794{ 1097{
795 return ( (x * 0x0802U & 0x22110U) 1098 return ( (x * 0x0802U & 0x22110U)
796 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; 1099 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
797} 1100}
798 1101
799ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const; 1102ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
800ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) 1103ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
801{ 1104{
802 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1); 1105 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
803 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2); 1106 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
804 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4); 1107 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
805 x = ( x >> 8 ) | ( x << 8); 1108 x = ( x >> 8 ) | ( x << 8);
806 1109
807 return x; 1110 return x;
808} 1111}
809 1112
810ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const; 1113ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
811ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) 1114ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
812{ 1115{
813 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1); 1116 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
814 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2); 1117 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
815 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4); 1118 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
816 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8); 1119 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
… …
819 return x; 1122 return x;
820} 1123}
821 1124
822/* popcount64 is only available on 64 bit cpus as gcc builtin */ 1125/* popcount64 is only available on 64 bit cpus as gcc builtin */
823/* so for this version we are lazy */ 1126/* so for this version we are lazy */
824ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 1127ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
825ecb_function_ int 1128ecb_function_ ecb_const int
826ecb_popcount64 (uint64_t x) 1129ecb_popcount64 (uint64_t x)
827{ 1130{
828 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); 1131 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
829} 1132}
830 1133
831ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const; 1134ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
832ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const; 1135ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
833ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const; 1136ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
834ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const; 1137ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
835ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const; 1138ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
836ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const; 1139ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
837ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const; 1140ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
838ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const; 1141ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
839 1142
840ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); } 1143ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
841ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); } 1144ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
842ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); } 1145ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
843ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); } 1146ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
844ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } 1147ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
845ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } 1148ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
846ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } 1149ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
847ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } 1150ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
848 1151
849#if ECB_GCC_VERSION(4,3) 1152#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1153 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1154 #define ecb_bswap16(x) __builtin_bswap16 (x)
1155 #else
850 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 1156 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1157 #endif
851 #define ecb_bswap32(x) __builtin_bswap32 (x) 1158 #define ecb_bswap32(x) __builtin_bswap32 (x)
852 #define ecb_bswap64(x) __builtin_bswap64 (x) 1159 #define ecb_bswap64(x) __builtin_bswap64 (x)
1160#elif _MSC_VER
1161 #include <stdlib.h>
1162 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1163 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1164 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
853#else 1165#else
854 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; 1166 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
855 ecb_function_ uint16_t 1167 ecb_function_ ecb_const uint16_t
856 ecb_bswap16 (uint16_t x) 1168 ecb_bswap16 (uint16_t x)
857 { 1169 {
858 return ecb_rotl16 (x, 8); 1170 return ecb_rotl16 (x, 8);
859 } 1171 }
860 1172
861 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; 1173 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
862 ecb_function_ uint32_t 1174 ecb_function_ ecb_const uint32_t
863 ecb_bswap32 (uint32_t x) 1175 ecb_bswap32 (uint32_t x)
864 { 1176 {
865 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); 1177 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
866 } 1178 }
867 1179
868 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; 1180 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
869 ecb_function_ uint64_t 1181 ecb_function_ ecb_const uint64_t
870 ecb_bswap64 (uint64_t x) 1182 ecb_bswap64 (uint64_t x)
871 { 1183 {
872 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); 1184 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
873 } 1185 }
874#endif 1186#endif
875 1187
876#if ECB_GCC_VERSION(4,5) 1188#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
877 #define ecb_unreachable() __builtin_unreachable () 1189 #define ecb_unreachable() __builtin_unreachable ()
878#else 1190#else
879 /* this seems to work fine, but gcc always emits a warning for it :/ */ 1191 /* this seems to work fine, but gcc always emits a warning for it :/ */
880 ecb_inline void ecb_unreachable (void) ecb_noreturn; 1192 ecb_inline ecb_noreturn void ecb_unreachable (void);
881 ecb_inline void ecb_unreachable (void) { } 1193 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
882#endif 1194#endif
883 1195
884/* try to tell the compiler that some condition is definitely true */ 1196/* try to tell the compiler that some condition is definitely true */
885#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) 1197#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
886 1198
887ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const; 1199ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
888ecb_inline unsigned char 1200ecb_inline ecb_const uint32_t
889ecb_byteorder_helper (void) 1201ecb_byteorder_helper (void)
890{ 1202{
891 const uint32_t u = 0x11223344; 1203 /* the union code still generates code under pressure in gcc, */
892 return *(unsigned char *)&u; 1204 /* but less than using pointers, and always seems to */
1205 /* successfully return a constant. */
1206 /* the reason why we have this horrible preprocessor mess */
1207 /* is to avoid it in all cases, at least on common architectures */
1208 /* or when using a recent enough gcc version (>= 4.6) */
1209#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1210 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1211 #define ECB_LITTLE_ENDIAN 1
1212 return 0x44332211;
1213#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1214 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1215 #define ECB_BIG_ENDIAN 1
1216 return 0x11223344;
1217#else
1218 union
1219 {
1220 uint8_t c[4];
1221 uint32_t u;
1222 } u = { 0x11, 0x22, 0x33, 0x44 };
1223 return u.u;
1224#endif
893} 1225}
894 1226
895ecb_inline ecb_bool ecb_big_endian (void) ecb_const; 1227ecb_inline ecb_const ecb_bool ecb_big_endian (void);
896ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } 1228ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
897ecb_inline ecb_bool ecb_little_endian (void) ecb_const; 1229ecb_inline ecb_const ecb_bool ecb_little_endian (void);
898ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } 1230ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
899 1231
900#if ECB_GCC_VERSION(3,0) || ECB_C99 1232#if ECB_GCC_VERSION(3,0) || ECB_C99
901 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) 1233 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
902#else 1234#else
903 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) 1235 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
904#endif 1236#endif
905 1237
906#if __cplusplus 1238#if ECB_CPP
907 template<typename T> 1239 template<typename T>
908 static inline T ecb_div_rd (T val, T div) 1240 static inline T ecb_div_rd (T val, T div)
909 { 1241 {
910 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; 1242 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
911 } 1243 }
… …
928 } 1260 }
929#else 1261#else
930 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1262 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
931#endif 1263#endif
932 1264
1265ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1266ecb_function_ ecb_const uint32_t
1267ecb_binary16_to_binary32 (uint32_t x)
1268{
1269 unsigned int s = (x & 0x8000) << (31 - 15);
1270 int e = (x >> 10) & 0x001f;
1271 unsigned int m = x & 0x03ff;
1272
1273 if (ecb_expect_false (e == 31))
1274 /* infinity or NaN */
1275 e = 255 - (127 - 15);
1276 else if (ecb_expect_false (!e))
1277 {
1278 if (ecb_expect_true (!m))
1279 /* zero, handled by code below by forcing e to 0 */
1280 e = 0 - (127 - 15);
1281 else
1282 {
1283 /* subnormal, renormalise */
1284 unsigned int s = 10 - ecb_ld32 (m);
1285
1286 m = (m << s) & 0x3ff; /* mask implicit bit */
1287 e -= s - 1;
1288 }
1289 }
1290
1291 /* e and m now are normalised, or zero, (or inf or nan) */
1292 e += 127 - 15;
1293
1294 return s | (e << 23) | (m << (23 - 10));
1295}
1296
1297ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1298ecb_function_ ecb_const uint16_t
1299ecb_binary32_to_binary16 (uint32_t x)
1300{
1301 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1302 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1303 unsigned int m = x & 0x007fffff;
1304
1305 x &= 0x7fffffff;
1306
1307 /* if it's within range of binary16 normals, use fast path */
1308 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1309 {
1310 /* mantissa round-to-even */
1311 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1312
1313 /* handle overflow */
1314 if (ecb_expect_false (m >= 0x00800000))
1315 {
1316 m >>= 1;
1317 e += 1;
1318 }
1319
1320 return s | (e << 10) | (m >> (23 - 10));
1321 }
1322
1323 /* handle large numbers and infinity */
1324 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1325 return s | 0x7c00;
1326
1327 /* handle zero, subnormals and small numbers */
1328 if (ecb_expect_true (x < 0x38800000))
1329 {
1330 /* zero */
1331 if (ecb_expect_true (!x))
1332 return s;
1333
1334 /* handle subnormals */
1335
1336 /* too small, will be zero */
1337 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1338 return s;
1339
1340 m |= 0x00800000; /* make implicit bit explicit */
1341
1342 /* very tricky - we need to round to the nearest e (+10) bit value */
1343 {
1344 unsigned int bits = 14 - e;
1345 unsigned int half = (1 << (bits - 1)) - 1;
1346 unsigned int even = (m >> bits) & 1;
1347
1348 /* if this overflows, we will end up with a normalised number */
1349 m = (m + half + even) >> bits;
1350 }
1351
1352 return s | m;
1353 }
1354
1355 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1356 m >>= 13;
1357
1358 return s | 0x7c00 | m | !m;
1359}
1360
1361/*******************************************************************************/
1362/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1363
1364/* basically, everything uses "ieee pure-endian" floating point numbers */
1365/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1366#if 0 \
1367 || __i386 || __i386__ \
1368 || ECB_GCC_AMD64 \
1369 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1370 || defined __s390__ || defined __s390x__ \
1371 || defined __mips__ \
1372 || defined __alpha__ \
1373 || defined __hppa__ \
1374 || defined __ia64__ \
1375 || defined __m68k__ \
1376 || defined __m88k__ \
1377 || defined __sh__ \
1378 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1379 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1380 || defined __aarch64__
1381 #define ECB_STDFP 1
1382 #include <string.h> /* for memcpy */
1383#else
1384 #define ECB_STDFP 0
1385#endif
1386
1387#ifndef ECB_NO_LIBM
1388
1389 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1390
1391 /* only the oldest of old doesn't have this one. solaris. */
1392 #ifdef INFINITY
1393 #define ECB_INFINITY INFINITY
1394 #else
1395 #define ECB_INFINITY HUGE_VAL
1396 #endif
1397
1398 #ifdef NAN
1399 #define ECB_NAN NAN
1400 #else
1401 #define ECB_NAN ECB_INFINITY
1402 #endif
1403
1404 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1405 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1406 #define ecb_frexpf(x,e) frexpf ((x), (e))
1407 #else
1408 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1409 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1410 #endif
1411
1412 /* convert a float to ieee single/binary32 */
1413 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1414 ecb_function_ ecb_const uint32_t
1415 ecb_float_to_binary32 (float x)
1416 {
1417 uint32_t r;
1418
1419 #if ECB_STDFP
1420 memcpy (&r, &x, 4);
1421 #else
1422 /* slow emulation, works for anything but -0 */
1423 uint32_t m;
1424 int e;
1425
1426 if (x == 0e0f ) return 0x00000000U;
1427 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1428 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1429 if (x != x ) return 0x7fbfffffU;
1430
1431 m = ecb_frexpf (x, &e) * 0x1000000U;
1432
1433 r = m & 0x80000000U;
1434
1435 if (r)
1436 m = -m;
1437
1438 if (e <= -126)
1439 {
1440 m &= 0xffffffU;
1441 m >>= (-125 - e);
1442 e = -126;
1443 }
1444
1445 r |= (e + 126) << 23;
1446 r |= m & 0x7fffffU;
1447 #endif
1448
1449 return r;
1450 }
1451
1452 /* converts an ieee single/binary32 to a float */
1453 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1454 ecb_function_ ecb_const float
1455 ecb_binary32_to_float (uint32_t x)
1456 {
1457 float r;
1458
1459 #if ECB_STDFP
1460 memcpy (&r, &x, 4);
1461 #else
1462 /* emulation, only works for normals and subnormals and +0 */
1463 int neg = x >> 31;
1464 int e = (x >> 23) & 0xffU;
1465
1466 x &= 0x7fffffU;
1467
1468 if (e)
1469 x |= 0x800000U;
1470 else
1471 e = 1;
1472
1473 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1474 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1475
1476 r = neg ? -r : r;
1477 #endif
1478
1479 return r;
1480 }
1481
1482 /* convert a double to ieee double/binary64 */
1483 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1484 ecb_function_ ecb_const uint64_t
1485 ecb_double_to_binary64 (double x)
1486 {
1487 uint64_t r;
1488
1489 #if ECB_STDFP
1490 memcpy (&r, &x, 8);
1491 #else
1492 /* slow emulation, works for anything but -0 */
1493 uint64_t m;
1494 int e;
1495
1496 if (x == 0e0 ) return 0x0000000000000000U;
1497 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1498 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1499 if (x != x ) return 0X7ff7ffffffffffffU;
1500
1501 m = frexp (x, &e) * 0x20000000000000U;
1502
1503 r = m & 0x8000000000000000;;
1504
1505 if (r)
1506 m = -m;
1507
1508 if (e <= -1022)
1509 {
1510 m &= 0x1fffffffffffffU;
1511 m >>= (-1021 - e);
1512 e = -1022;
1513 }
1514
1515 r |= ((uint64_t)(e + 1022)) << 52;
1516 r |= m & 0xfffffffffffffU;
1517 #endif
1518
1519 return r;
1520 }
1521
1522 /* converts an ieee double/binary64 to a double */
1523 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1524 ecb_function_ ecb_const double
1525 ecb_binary64_to_double (uint64_t x)
1526 {
1527 double r;
1528
1529 #if ECB_STDFP
1530 memcpy (&r, &x, 8);
1531 #else
1532 /* emulation, only works for normals and subnormals and +0 */
1533 int neg = x >> 63;
1534 int e = (x >> 52) & 0x7ffU;
1535
1536 x &= 0xfffffffffffffU;
1537
1538 if (e)
1539 x |= 0x10000000000000U;
1540 else
1541 e = 1;
1542
1543 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1544 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1545
1546 r = neg ? -r : r;
1547 #endif
1548
1549 return r;
1550 }
1551
1552 /* convert a float to ieee half/binary16 */
1553 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1554 ecb_function_ ecb_const uint16_t
1555 ecb_float_to_binary16 (float x)
1556 {
1557 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1558 }
1559
1560 /* convert an ieee half/binary16 to float */
1561 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1562 ecb_function_ ecb_const float
1563 ecb_binary16_to_float (uint16_t x)
1564 {
1565 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1566 }
1567
1568#endif
1569
933#endif 1570#endif
934 1571
935/* ECB.H END */ 1572/* ECB.H END */
936 1573
937#if ECB_MEMORY_FENCE_NEEDS_PTHREADS 1574#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
938/* if your architecture doesn't need memory fences, e.g. because it is 1575/* if your architecture doesn't need memory fences, e.g. because it is
939 * single-cpu/core, or if you use libev in a project that doesn't use libev 1576 * single-cpu/core, or if you use libev in a project that doesn't use libev
940 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling 1577 * from multiple threads, then you can define ECB_NO_THREADS when compiling
941 * libev, in which cases the memory fences become nops. 1578 * libev, in which cases the memory fences become nops.
942 * alternatively, you can remove this #error and link against libpthread, 1579 * alternatively, you can remove this #error and link against libpthread,
943 * which will then provide the memory fences. 1580 * which will then provide the memory fences.
944 */ 1581 */
945# error "memory fences not defined for your architecture, please report" 1582# error "memory fences not defined for your architecture, please report"
… …
949# define ECB_MEMORY_FENCE do { } while (0) 1586# define ECB_MEMORY_FENCE do { } while (0)
950# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 1587# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
951# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 1588# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
952#endif 1589#endif
953 1590
954#define expect_false(cond) ecb_expect_false (cond)
955#define expect_true(cond) ecb_expect_true (cond)
956#define noinline ecb_noinline
957
958#define inline_size ecb_inline 1591#define inline_size ecb_inline
959 1592
960#if EV_FEATURE_CODE 1593#if EV_FEATURE_CODE
961# define inline_speed ecb_inline 1594# define inline_speed ecb_inline
962#else 1595#else
963# define inline_speed static noinline 1596# define inline_speed ecb_noinline static
964#endif 1597#endif
1598
1599/*****************************************************************************/
1600/* raw syscall wrappers */
1601
1602#if EV_NEED_SYSCALL
1603
1604#include <sys/syscall.h>
1605
1606/*
1607 * define some syscall wrappers for common architectures
1608 * this is mostly for nice looks during debugging, not performance.
1609 * our syscalls return < 0, not == -1, on error. which is good
1610 * enough for linux aio.
1611 * TODO: arm is also common nowadays, maybe even mips and x86
1612 * TODO: after implementing this, it suddenly looks like overkill, but its hard to remove...
1613 */
1614#if __GNUC__ && __linux && ECB_AMD64 && !defined __OPTIMIZE_SIZE__
1615 /* the costly errno access probably kills this for size optimisation */
1616
1617 #define ev_syscall(nr,narg,arg1,arg2,arg3,arg4,arg5,arg6) \
1618 ({ \
1619 long res; \
1620 register unsigned long r6 __asm__ ("r9" ); \
1621 register unsigned long r5 __asm__ ("r8" ); \
1622 register unsigned long r4 __asm__ ("r10"); \
1623 register unsigned long r3 __asm__ ("rdx"); \
1624 register unsigned long r2 __asm__ ("rsi"); \
1625 register unsigned long r1 __asm__ ("rdi"); \
1626 if (narg >= 6) r6 = (unsigned long)(arg6); \
1627 if (narg >= 5) r5 = (unsigned long)(arg5); \
1628 if (narg >= 4) r4 = (unsigned long)(arg4); \
1629 if (narg >= 3) r3 = (unsigned long)(arg3); \
1630 if (narg >= 2) r2 = (unsigned long)(arg2); \
1631 if (narg >= 1) r1 = (unsigned long)(arg1); \
1632 __asm__ __volatile__ ( \
1633 "syscall\n\t" \
1634 : "=a" (res) \
1635 : "0" (nr), "r" (r1), "r" (r2), "r" (r3), "r" (r4), "r" (r5) \
1636 : "cc", "r11", "cx", "memory"); \
1637 errno = -res; \
1638 res; \
1639 })
1640
1641#endif
1642
1643#ifdef ev_syscall
1644 #define ev_syscall0(nr) ev_syscall (nr, 0, 0, 0, 0, 0, 0, 0)
1645 #define ev_syscall1(nr,arg1) ev_syscall (nr, 1, arg1, 0, 0, 0, 0, 0)
1646 #define ev_syscall2(nr,arg1,arg2) ev_syscall (nr, 2, arg1, arg2, 0, 0, 0, 0)
1647 #define ev_syscall3(nr,arg1,arg2,arg3) ev_syscall (nr, 3, arg1, arg2, arg3, 0, 0, 0)
1648 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) ev_syscall (nr, 3, arg1, arg2, arg3, arg4, 0, 0)
1649 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) ev_syscall (nr, 5, arg1, arg2, arg3, arg4, arg5, 0)
1650 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) ev_syscall (nr, 6, arg1, arg2, arg3, arg4, arg5,arg6)
1651#else
1652 #define ev_syscall0(nr) syscall (nr)
1653 #define ev_syscall1(nr,arg1) syscall (nr, arg1)
1654 #define ev_syscall2(nr,arg1,arg2) syscall (nr, arg1, arg2)
1655 #define ev_syscall3(nr,arg1,arg2,arg3) syscall (nr, arg1, arg2, arg3)
1656 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) syscall (nr, arg1, arg2, arg3, arg4)
1657 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) syscall (nr, arg1, arg2, arg3, arg4, arg5)
1658 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) syscall (nr, arg1, arg2, arg3, arg4, arg5,arg6)
1659#endif
1660
1661#endif
1662
1663/*****************************************************************************/
965 1664
966#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1665#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
967 1666
968#if EV_MINPRI == EV_MAXPRI 1667#if EV_MINPRI == EV_MAXPRI
969# define ABSPRI(w) (((W)w), 0) 1668# define ABSPRI(w) (((W)w), 0)
970#else 1669#else
971# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1670# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
972#endif 1671#endif
973 1672
974#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1673#define EMPTY /* required for microsofts broken pseudo-c compiler */
975#define EMPTY2(a,b) /* used to suppress some warnings */
976 1674
977typedef ev_watcher *W; 1675typedef ev_watcher *W;
978typedef ev_watcher_list *WL; 1676typedef ev_watcher_list *WL;
979typedef ev_watcher_time *WT; 1677typedef ev_watcher_time *WT;
980 1678
… …
1005# include "ev_win32.c" 1703# include "ev_win32.c"
1006#endif 1704#endif
1007 1705
1008/*****************************************************************************/ 1706/*****************************************************************************/
1009 1707
1708#if EV_USE_LINUXAIO
1709# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1710#endif
1711
1010/* define a suitable floor function (only used by periodics atm) */ 1712/* define a suitable floor function (only used by periodics atm) */
1011 1713
1012#if EV_USE_FLOOR 1714#if EV_USE_FLOOR
1013# include <math.h> 1715# include <math.h>
1014# define ev_floor(v) floor (v) 1716# define ev_floor(v) floor (v)
1015#else 1717#else
1016 1718
1017#include <float.h> 1719#include <float.h>
1018 1720
1019/* a floor() replacement function, should be independent of ev_tstamp type */ 1721/* a floor() replacement function, should be independent of ev_tstamp type */
1722ecb_noinline
1020static ev_tstamp noinline 1723static ev_tstamp
1021ev_floor (ev_tstamp v) 1724ev_floor (ev_tstamp v)
1022{ 1725{
1023 /* the choice of shift factor is not terribly important */ 1726 /* the choice of shift factor is not terribly important */
1024#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1727#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1025 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1728 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1026#else 1729#else
1027 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; 1730 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1028#endif 1731#endif
1029 1732
1733 /* special treatment for negative arguments */
1734 if (ecb_expect_false (v < 0.))
1735 {
1736 ev_tstamp f = -ev_floor (-v);
1737
1738 return f - (f == v ? 0 : 1);
1739 }
1740
1030 /* argument too large for an unsigned long? */ 1741 /* argument too large for an unsigned long? then reduce it */
1031 if (expect_false (v >= shift)) 1742 if (ecb_expect_false (v >= shift))
1032 { 1743 {
1033 ev_tstamp f; 1744 ev_tstamp f;
1034 1745
1035 if (v == v - 1.) 1746 if (v == v - 1.)
1036 return v; /* very large number */ 1747 return v; /* very large numbers are assumed to be integer */
1037 1748
1038 f = shift * ev_floor (v * (1. / shift)); 1749 f = shift * ev_floor (v * (1. / shift));
1039 return f + ev_floor (v - f); 1750 return f + ev_floor (v - f);
1040 } 1751 }
1041 1752
1042 /* special treatment for negative args? */
1043 if (expect_false (v < 0.))
1044 {
1045 ev_tstamp f = -ev_floor (-v);
1046
1047 return f - (f == v ? 0 : 1);
1048 }
1049
1050 /* fits into an unsigned long */ 1753 /* fits into an unsigned long */
1051 return (unsigned long)v; 1754 return (unsigned long)v;
1052} 1755}
1053 1756
1054#endif 1757#endif
… …
1057 1760
1058#ifdef __linux 1761#ifdef __linux
1059# include <sys/utsname.h> 1762# include <sys/utsname.h>
1060#endif 1763#endif
1061 1764
1062static unsigned int noinline ecb_cold 1765ecb_noinline ecb_cold
1766static unsigned int
1063ev_linux_version (void) 1767ev_linux_version (void)
1064{ 1768{
1065#ifdef __linux 1769#ifdef __linux
1066 unsigned int v = 0; 1770 unsigned int v = 0;
1067 struct utsname buf; 1771 struct utsname buf;
… …
1096} 1800}
1097 1801
1098/*****************************************************************************/ 1802/*****************************************************************************/
1099 1803
1100#if EV_AVOID_STDIO 1804#if EV_AVOID_STDIO
1101static void noinline ecb_cold 1805ecb_noinline ecb_cold
1806static void
1102ev_printerr (const char *msg) 1807ev_printerr (const char *msg)
1103{ 1808{
1104 write (STDERR_FILENO, msg, strlen (msg)); 1809 write (STDERR_FILENO, msg, strlen (msg));
1105} 1810}
1106#endif 1811#endif
1107 1812
1108static void (*syserr_cb)(const char *msg); 1813static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
1109 1814
1110void ecb_cold 1815ecb_cold
1816void
1111ev_set_syserr_cb (void (*cb)(const char *msg)) 1817ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
1112{ 1818{
1113 syserr_cb = cb; 1819 syserr_cb = cb;
1114} 1820}
1115 1821
1116static void noinline ecb_cold 1822ecb_noinline ecb_cold
1823static void
1117ev_syserr (const char *msg) 1824ev_syserr (const char *msg)
1118{ 1825{
1119 if (!msg) 1826 if (!msg)
1120 msg = "(libev) system error"; 1827 msg = "(libev) system error";
1121 1828
… …
1134 abort (); 1841 abort ();
1135 } 1842 }
1136} 1843}
1137 1844
1138static void * 1845static void *
1139ev_realloc_emul (void *ptr, long size) 1846ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
1140{ 1847{
1141#if __GLIBC__
1142 return realloc (ptr, size);
1143#else
1144 /* some systems, notably openbsd and darwin, fail to properly 1848 /* some systems, notably openbsd and darwin, fail to properly
1145 * implement realloc (x, 0) (as required by both ansi c-89 and 1849 * implement realloc (x, 0) (as required by both ansi c-89 and
1146 * the single unix specification, so work around them here. 1850 * the single unix specification, so work around them here.
1851 * recently, also (at least) fedora and debian started breaking it,
1852 * despite documenting it otherwise.
1147 */ 1853 */
1148 1854
1149 if (size) 1855 if (size)
1150 return realloc (ptr, size); 1856 return realloc (ptr, size);
1151 1857
1152 free (ptr); 1858 free (ptr);
1153 return 0; 1859 return 0;
1154#endif
1155} 1860}
1156 1861
1157static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1862static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
1158 1863
1159void ecb_cold 1864ecb_cold
1865void
1160ev_set_allocator (void *(*cb)(void *ptr, long size)) 1866ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
1161{ 1867{
1162 alloc = cb; 1868 alloc = cb;
1163} 1869}
1164 1870
1165inline_speed void * 1871inline_speed void *
… …
1192typedef struct 1898typedef struct
1193{ 1899{
1194 WL head; 1900 WL head;
1195 unsigned char events; /* the events watched for */ 1901 unsigned char events; /* the events watched for */
1196 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 1902 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
1197 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1903 unsigned char emask; /* some backends store the actual kernel mask in here */
1198 unsigned char unused; 1904 unsigned char eflags; /* flags field for use by backends */
1199#if EV_USE_EPOLL 1905#if EV_USE_EPOLL
1200 unsigned int egen; /* generation counter to counter epoll bugs */ 1906 unsigned int egen; /* generation counter to counter epoll bugs */
1201#endif 1907#endif
1202#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 1908#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1203 SOCKET handle; 1909 SOCKET handle;
… …
1267 static int ev_default_loop_ptr; 1973 static int ev_default_loop_ptr;
1268 1974
1269#endif 1975#endif
1270 1976
1271#if EV_FEATURE_API 1977#if EV_FEATURE_API
1272# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1978# define EV_RELEASE_CB if (ecb_expect_false (release_cb)) release_cb (EV_A)
1273# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 1979# define EV_ACQUIRE_CB if (ecb_expect_false (acquire_cb)) acquire_cb (EV_A)
1274# define EV_INVOKE_PENDING invoke_cb (EV_A) 1980# define EV_INVOKE_PENDING invoke_cb (EV_A)
1275#else 1981#else
1276# define EV_RELEASE_CB (void)0 1982# define EV_RELEASE_CB (void)0
1277# define EV_ACQUIRE_CB (void)0 1983# define EV_ACQUIRE_CB (void)0
1278# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1984# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
… …
1282 1988
1283/*****************************************************************************/ 1989/*****************************************************************************/
1284 1990
1285#ifndef EV_HAVE_EV_TIME 1991#ifndef EV_HAVE_EV_TIME
1286ev_tstamp 1992ev_tstamp
1287ev_time (void) 1993ev_time (void) EV_NOEXCEPT
1288{ 1994{
1289#if EV_USE_REALTIME 1995#if EV_USE_REALTIME
1290 if (expect_true (have_realtime)) 1996 if (ecb_expect_true (have_realtime))
1291 { 1997 {
1292 struct timespec ts; 1998 struct timespec ts;
1293 clock_gettime (CLOCK_REALTIME, &ts); 1999 clock_gettime (CLOCK_REALTIME, &ts);
1294 return ts.tv_sec + ts.tv_nsec * 1e-9; 2000 return EV_TS_GET (ts);
1295 } 2001 }
1296#endif 2002#endif
1297 2003
1298 struct timeval tv; 2004 struct timeval tv;
1299 gettimeofday (&tv, 0); 2005 gettimeofday (&tv, 0);
1300 return tv.tv_sec + tv.tv_usec * 1e-6; 2006 return EV_TV_GET (tv);
1301} 2007}
1302#endif 2008#endif
1303 2009
1304inline_size ev_tstamp 2010inline_size ev_tstamp
1305get_clock (void) 2011get_clock (void)
1306{ 2012{
1307#if EV_USE_MONOTONIC 2013#if EV_USE_MONOTONIC
1308 if (expect_true (have_monotonic)) 2014 if (ecb_expect_true (have_monotonic))
1309 { 2015 {
1310 struct timespec ts; 2016 struct timespec ts;
1311 clock_gettime (CLOCK_MONOTONIC, &ts); 2017 clock_gettime (CLOCK_MONOTONIC, &ts);
1312 return ts.tv_sec + ts.tv_nsec * 1e-9; 2018 return EV_TS_GET (ts);
1313 } 2019 }
1314#endif 2020#endif
1315 2021
1316 return ev_time (); 2022 return ev_time ();
1317} 2023}
1318 2024
1319#if EV_MULTIPLICITY 2025#if EV_MULTIPLICITY
1320ev_tstamp 2026ev_tstamp
1321ev_now (EV_P) 2027ev_now (EV_P) EV_NOEXCEPT
1322{ 2028{
1323 return ev_rt_now; 2029 return ev_rt_now;
1324} 2030}
1325#endif 2031#endif
1326 2032
1327void 2033void
1328ev_sleep (ev_tstamp delay) 2034ev_sleep (ev_tstamp delay) EV_NOEXCEPT
1329{ 2035{
1330 if (delay > 0.) 2036 if (delay > 0.)
1331 { 2037 {
1332#if EV_USE_NANOSLEEP 2038#if EV_USE_NANOSLEEP
1333 struct timespec ts; 2039 struct timespec ts;
1334 2040
1335 EV_TS_SET (ts, delay); 2041 EV_TS_SET (ts, delay);
1336 nanosleep (&ts, 0); 2042 nanosleep (&ts, 0);
1337#elif defined _WIN32 2043#elif defined _WIN32
2044 /* maybe this should round up, as ms is very low resolution */
2045 /* compared to select (µs) or nanosleep (ns) */
1338 Sleep ((unsigned long)(delay * 1e3)); 2046 Sleep ((unsigned long)(delay * 1e3));
1339#else 2047#else
1340 struct timeval tv; 2048 struct timeval tv;
1341 2049
1342 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 2050 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
… …
1373 } 2081 }
1374 2082
1375 return ncur; 2083 return ncur;
1376} 2084}
1377 2085
1378static void * noinline ecb_cold 2086ecb_noinline ecb_cold
2087static void *
1379array_realloc (int elem, void *base, int *cur, int cnt) 2088array_realloc (int elem, void *base, int *cur, int cnt)
1380{ 2089{
1381 *cur = array_nextsize (elem, *cur, cnt); 2090 *cur = array_nextsize (elem, *cur, cnt);
1382 return ev_realloc (base, elem * *cur); 2091 return ev_realloc (base, elem * *cur);
1383} 2092}
1384 2093
2094#define array_needsize_noinit(base,offset,count)
2095
1385#define array_init_zero(base,count) \ 2096#define array_needsize_zerofill(base,offset,count) \
1386 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2097 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
1387 2098
1388#define array_needsize(type,base,cur,cnt,init) \ 2099#define array_needsize(type,base,cur,cnt,init) \
1389 if (expect_false ((cnt) > (cur))) \ 2100 if (ecb_expect_false ((cnt) > (cur))) \
1390 { \ 2101 { \
1391 int ecb_unused ocur_ = (cur); \ 2102 ecb_unused int ocur_ = (cur); \
1392 (base) = (type *)array_realloc \ 2103 (base) = (type *)array_realloc \
1393 (sizeof (type), (base), &(cur), (cnt)); \ 2104 (sizeof (type), (base), &(cur), (cnt)); \
1394 init ((base) + (ocur_), (cur) - ocur_); \ 2105 init ((base), ocur_, ((cur) - ocur_)); \
1395 } 2106 }
1396 2107
1397#if 0 2108#if 0
1398#define array_slim(type,stem) \ 2109#define array_slim(type,stem) \
1399 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2110 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
1408 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2119 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
1409 2120
1410/*****************************************************************************/ 2121/*****************************************************************************/
1411 2122
1412/* dummy callback for pending events */ 2123/* dummy callback for pending events */
1413static void noinline 2124ecb_noinline
2125static void
1414pendingcb (EV_P_ ev_prepare *w, int revents) 2126pendingcb (EV_P_ ev_prepare *w, int revents)
1415{ 2127{
1416} 2128}
1417 2129
1418void noinline 2130ecb_noinline
2131void
1419ev_feed_event (EV_P_ void *w, int revents) 2132ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
1420{ 2133{
1421 W w_ = (W)w; 2134 W w_ = (W)w;
1422 int pri = ABSPRI (w_); 2135 int pri = ABSPRI (w_);
1423 2136
1424 if (expect_false (w_->pending)) 2137 if (ecb_expect_false (w_->pending))
1425 pendings [pri][w_->pending - 1].events |= revents; 2138 pendings [pri][w_->pending - 1].events |= revents;
1426 else 2139 else
1427 { 2140 {
1428 w_->pending = ++pendingcnt [pri]; 2141 w_->pending = ++pendingcnt [pri];
1429 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2142 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
1430 pendings [pri][w_->pending - 1].w = w_; 2143 pendings [pri][w_->pending - 1].w = w_;
1431 pendings [pri][w_->pending - 1].events = revents; 2144 pendings [pri][w_->pending - 1].events = revents;
1432 } 2145 }
2146
2147 pendingpri = NUMPRI - 1;
1433} 2148}
1434 2149
1435inline_speed void 2150inline_speed void
1436feed_reverse (EV_P_ W w) 2151feed_reverse (EV_P_ W w)
1437{ 2152{
1438 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2153 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
1439 rfeeds [rfeedcnt++] = w; 2154 rfeeds [rfeedcnt++] = w;
1440} 2155}
1441 2156
1442inline_size void 2157inline_size void
1443feed_reverse_done (EV_P_ int revents) 2158feed_reverse_done (EV_P_ int revents)
… …
1478inline_speed void 2193inline_speed void
1479fd_event (EV_P_ int fd, int revents) 2194fd_event (EV_P_ int fd, int revents)
1480{ 2195{
1481 ANFD *anfd = anfds + fd; 2196 ANFD *anfd = anfds + fd;
1482 2197
1483 if (expect_true (!anfd->reify)) 2198 if (ecb_expect_true (!anfd->reify))
1484 fd_event_nocheck (EV_A_ fd, revents); 2199 fd_event_nocheck (EV_A_ fd, revents);
1485} 2200}
1486 2201
1487void 2202void
1488ev_feed_fd_event (EV_P_ int fd, int revents) 2203ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
1489{ 2204{
1490 if (fd >= 0 && fd < anfdmax) 2205 if (fd >= 0 && fd < anfdmax)
1491 fd_event_nocheck (EV_A_ fd, revents); 2206 fd_event_nocheck (EV_A_ fd, revents);
1492} 2207}
1493 2208
… …
1530 ev_io *w; 2245 ev_io *w;
1531 2246
1532 unsigned char o_events = anfd->events; 2247 unsigned char o_events = anfd->events;
1533 unsigned char o_reify = anfd->reify; 2248 unsigned char o_reify = anfd->reify;
1534 2249
1535 anfd->reify = 0; 2250 anfd->reify = 0;
1536 2251
1537 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 2252 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
1538 { 2253 {
1539 anfd->events = 0; 2254 anfd->events = 0;
1540 2255
1541 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2256 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1542 anfd->events |= (unsigned char)w->events; 2257 anfd->events |= (unsigned char)w->events;
… …
1551 2266
1552 fdchangecnt = 0; 2267 fdchangecnt = 0;
1553} 2268}
1554 2269
1555/* something about the given fd changed */ 2270/* something about the given fd changed */
1556inline_size void 2271inline_size
2272void
1557fd_change (EV_P_ int fd, int flags) 2273fd_change (EV_P_ int fd, int flags)
1558{ 2274{
1559 unsigned char reify = anfds [fd].reify; 2275 unsigned char reify = anfds [fd].reify;
1560 anfds [fd].reify |= flags; 2276 anfds [fd].reify |= flags;
1561 2277
1562 if (expect_true (!reify)) 2278 if (ecb_expect_true (!reify))
1563 { 2279 {
1564 ++fdchangecnt; 2280 ++fdchangecnt;
1565 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2281 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
1566 fdchanges [fdchangecnt - 1] = fd; 2282 fdchanges [fdchangecnt - 1] = fd;
1567 } 2283 }
1568} 2284}
1569 2285
1570/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2286/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1571inline_speed void ecb_cold 2287inline_speed ecb_cold void
1572fd_kill (EV_P_ int fd) 2288fd_kill (EV_P_ int fd)
1573{ 2289{
1574 ev_io *w; 2290 ev_io *w;
1575 2291
1576 while ((w = (ev_io *)anfds [fd].head)) 2292 while ((w = (ev_io *)anfds [fd].head))
… …
1579 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2295 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1580 } 2296 }
1581} 2297}
1582 2298
1583/* check whether the given fd is actually valid, for error recovery */ 2299/* check whether the given fd is actually valid, for error recovery */
1584inline_size int ecb_cold 2300inline_size ecb_cold int
1585fd_valid (int fd) 2301fd_valid (int fd)
1586{ 2302{
1587#ifdef _WIN32 2303#ifdef _WIN32
1588 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2304 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1589#else 2305#else
1590 return fcntl (fd, F_GETFD) != -1; 2306 return fcntl (fd, F_GETFD) != -1;
1591#endif 2307#endif
1592} 2308}
1593 2309
1594/* called on EBADF to verify fds */ 2310/* called on EBADF to verify fds */
1595static void noinline ecb_cold 2311ecb_noinline ecb_cold
2312static void
1596fd_ebadf (EV_P) 2313fd_ebadf (EV_P)
1597{ 2314{
1598 int fd; 2315 int fd;
1599 2316
1600 for (fd = 0; fd < anfdmax; ++fd) 2317 for (fd = 0; fd < anfdmax; ++fd)
… …
1602 if (!fd_valid (fd) && errno == EBADF) 2319 if (!fd_valid (fd) && errno == EBADF)
1603 fd_kill (EV_A_ fd); 2320 fd_kill (EV_A_ fd);
1604} 2321}
1605 2322
1606/* called on ENOMEM in select/poll to kill some fds and retry */ 2323/* called on ENOMEM in select/poll to kill some fds and retry */
1607static void noinline ecb_cold 2324ecb_noinline ecb_cold
2325static void
1608fd_enomem (EV_P) 2326fd_enomem (EV_P)
1609{ 2327{
1610 int fd; 2328 int fd;
1611 2329
1612 for (fd = anfdmax; fd--; ) 2330 for (fd = anfdmax; fd--; )
… …
1616 break; 2334 break;
1617 } 2335 }
1618} 2336}
1619 2337
1620/* usually called after fork if backend needs to re-arm all fds from scratch */ 2338/* usually called after fork if backend needs to re-arm all fds from scratch */
1621static void noinline 2339ecb_noinline
2340static void
1622fd_rearm_all (EV_P) 2341fd_rearm_all (EV_P)
1623{ 2342{
1624 int fd; 2343 int fd;
1625 2344
1626 for (fd = 0; fd < anfdmax; ++fd) 2345 for (fd = 0; fd < anfdmax; ++fd)
… …
1679 ev_tstamp minat; 2398 ev_tstamp minat;
1680 ANHE *minpos; 2399 ANHE *minpos;
1681 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2400 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1682 2401
1683 /* find minimum child */ 2402 /* find minimum child */
1684 if (expect_true (pos + DHEAP - 1 < E)) 2403 if (ecb_expect_true (pos + DHEAP - 1 < E))
1685 { 2404 {
1686 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2405 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1687 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2406 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1688 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2407 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1689 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2408 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
… …
1807 2526
1808/*****************************************************************************/ 2527/*****************************************************************************/
1809 2528
1810#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2529#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1811 2530
1812static void noinline ecb_cold 2531ecb_noinline ecb_cold
2532static void
1813evpipe_init (EV_P) 2533evpipe_init (EV_P)
1814{ 2534{
1815 if (!ev_is_active (&pipe_w)) 2535 if (!ev_is_active (&pipe_w))
1816 { 2536 {
2537 int fds [2];
2538
1817# if EV_USE_EVENTFD 2539# if EV_USE_EVENTFD
2540 fds [0] = -1;
1818 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2541 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1819 if (evfd < 0 && errno == EINVAL) 2542 if (fds [1] < 0 && errno == EINVAL)
1820 evfd = eventfd (0, 0); 2543 fds [1] = eventfd (0, 0);
1821 2544
1822 if (evfd >= 0) 2545 if (fds [1] < 0)
2546# endif
1823 { 2547 {
2548 while (pipe (fds))
2549 ev_syserr ("(libev) error creating signal/async pipe");
2550
2551 fd_intern (fds [0]);
2552 }
2553
1824 evpipe [0] = -1; 2554 evpipe [0] = fds [0];
1825 fd_intern (evfd); /* doing it twice doesn't hurt */ 2555
1826 ev_io_set (&pipe_w, evfd, EV_READ); 2556 if (evpipe [1] < 0)
2557 evpipe [1] = fds [1]; /* first call, set write fd */
2558 else
2559 {
2560 /* on subsequent calls, do not change evpipe [1] */
2561 /* so that evpipe_write can always rely on its value. */
2562 /* this branch does not do anything sensible on windows, */
2563 /* so must not be executed on windows */
2564
2565 dup2 (fds [1], evpipe [1]);
2566 close (fds [1]);
2567 }
2568
2569 fd_intern (evpipe [1]);
2570
2571 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2572 ev_io_start (EV_A_ &pipe_w);
2573 ev_unref (EV_A); /* watcher should not keep loop alive */
2574 }
2575}
2576
2577inline_speed void
2578evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2579{
2580 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2581
2582 if (ecb_expect_true (*flag))
2583 return;
2584
2585 *flag = 1;
2586 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2587
2588 pipe_write_skipped = 1;
2589
2590 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2591
2592 if (pipe_write_wanted)
2593 {
2594 int old_errno;
2595
2596 pipe_write_skipped = 0;
2597 ECB_MEMORY_FENCE_RELEASE;
2598
2599 old_errno = errno; /* save errno because write will clobber it */
2600
2601#if EV_USE_EVENTFD
2602 if (evpipe [0] < 0)
2603 {
2604 uint64_t counter = 1;
2605 write (evpipe [1], &counter, sizeof (uint64_t));
1827 } 2606 }
1828 else 2607 else
1829# endif 2608#endif
1830 { 2609 {
1831 while (pipe (evpipe)) 2610#ifdef _WIN32
1832 ev_syserr ("(libev) error creating signal/async pipe"); 2611 WSABUF buf;
1833 2612 DWORD sent;
1834 fd_intern (evpipe [0]); 2613 buf.buf = (char *)&buf;
1835 fd_intern (evpipe [1]); 2614 buf.len = 1;
1836 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2615 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1837 } 2616#else
1838
1839 ev_io_start (EV_A_ &pipe_w);
1840 ev_unref (EV_A); /* watcher should not keep loop alive */
1841 }
1842}
1843
1844inline_speed void
1845evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1846{
1847 if (expect_true (*flag))
1848 return;
1849
1850 *flag = 1;
1851
1852 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1853
1854 pipe_write_skipped = 1;
1855
1856 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1857
1858 if (pipe_write_wanted)
1859 {
1860 int old_errno;
1861
1862 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1863
1864 old_errno = errno; /* save errno because write will clobber it */
1865
1866#if EV_USE_EVENTFD
1867 if (evfd >= 0)
1868 {
1869 uint64_t counter = 1;
1870 write (evfd, &counter, sizeof (uint64_t));
1871 }
1872 else
1873#endif
1874 {
1875 /* win32 people keep sending patches that change this write() to send() */
1876 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1877 /* so when you think this write should be a send instead, please find out */
1878 /* where your send() is from - it's definitely not the microsoft send, and */
1879 /* tell me. thank you. */
1880 /* it might be that your problem is that your environment needs EV_USE_WSASOCKET */
1881 /* check the ev documentation on how to use this flag */
1882 write (evpipe [1], &(evpipe [1]), 1); 2617 write (evpipe [1], &(evpipe [1]), 1);
2618#endif
1883 } 2619 }
1884 2620
1885 errno = old_errno; 2621 errno = old_errno;
1886 } 2622 }
1887} 2623}
… …
1894 int i; 2630 int i;
1895 2631
1896 if (revents & EV_READ) 2632 if (revents & EV_READ)
1897 { 2633 {
1898#if EV_USE_EVENTFD 2634#if EV_USE_EVENTFD
1899 if (evfd >= 0) 2635 if (evpipe [0] < 0)
1900 { 2636 {
1901 uint64_t counter; 2637 uint64_t counter;
1902 read (evfd, &counter, sizeof (uint64_t)); 2638 read (evpipe [1], &counter, sizeof (uint64_t));
1903 } 2639 }
1904 else 2640 else
1905#endif 2641#endif
1906 { 2642 {
1907 char dummy; 2643 char dummy[4];
1908 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2644#ifdef _WIN32
2645 WSABUF buf;
2646 DWORD recvd;
2647 DWORD flags = 0;
2648 buf.buf = dummy;
2649 buf.len = sizeof (dummy);
2650 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2651#else
1909 read (evpipe [0], &dummy, 1); 2652 read (evpipe [0], &dummy, sizeof (dummy));
2653#endif
1910 } 2654 }
1911 } 2655 }
1912 2656
1913 pipe_write_skipped = 0; 2657 pipe_write_skipped = 0;
2658
2659 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1914 2660
1915#if EV_SIGNAL_ENABLE 2661#if EV_SIGNAL_ENABLE
1916 if (sig_pending) 2662 if (sig_pending)
1917 { 2663 {
1918 sig_pending = 0; 2664 sig_pending = 0;
1919 2665
2666 ECB_MEMORY_FENCE;
2667
1920 for (i = EV_NSIG - 1; i--; ) 2668 for (i = EV_NSIG - 1; i--; )
1921 if (expect_false (signals [i].pending)) 2669 if (ecb_expect_false (signals [i].pending))
1922 ev_feed_signal_event (EV_A_ i + 1); 2670 ev_feed_signal_event (EV_A_ i + 1);
1923 } 2671 }
1924#endif 2672#endif
1925 2673
1926#if EV_ASYNC_ENABLE 2674#if EV_ASYNC_ENABLE
1927 if (async_pending) 2675 if (async_pending)
1928 { 2676 {
1929 async_pending = 0; 2677 async_pending = 0;
2678
2679 ECB_MEMORY_FENCE;
1930 2680
1931 for (i = asynccnt; i--; ) 2681 for (i = asynccnt; i--; )
1932 if (asyncs [i]->sent) 2682 if (asyncs [i]->sent)
1933 { 2683 {
1934 asyncs [i]->sent = 0; 2684 asyncs [i]->sent = 0;
2685 ECB_MEMORY_FENCE_RELEASE;
1935 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2686 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1936 } 2687 }
1937 } 2688 }
1938#endif 2689#endif
1939} 2690}
1940 2691
1941/*****************************************************************************/ 2692/*****************************************************************************/
1942 2693
1943void 2694void
1944ev_feed_signal (int signum) 2695ev_feed_signal (int signum) EV_NOEXCEPT
1945{ 2696{
1946#if EV_MULTIPLICITY 2697#if EV_MULTIPLICITY
2698 EV_P;
2699 ECB_MEMORY_FENCE_ACQUIRE;
1947 EV_P = signals [signum - 1].loop; 2700 EV_A = signals [signum - 1].loop;
1948 2701
1949 if (!EV_A) 2702 if (!EV_A)
1950 return; 2703 return;
1951#endif 2704#endif
1952 2705
1953 if (!ev_active (&pipe_w))
1954 return;
1955
1956 signals [signum - 1].pending = 1; 2706 signals [signum - 1].pending = 1;
1957 evpipe_write (EV_A_ &sig_pending); 2707 evpipe_write (EV_A_ &sig_pending);
1958} 2708}
1959 2709
1960static void 2710static void
… …
1965#endif 2715#endif
1966 2716
1967 ev_feed_signal (signum); 2717 ev_feed_signal (signum);
1968} 2718}
1969 2719
1970void noinline 2720ecb_noinline
2721void
1971ev_feed_signal_event (EV_P_ int signum) 2722ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1972{ 2723{
1973 WL w; 2724 WL w;
1974 2725
1975 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2726 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
1976 return; 2727 return;
1977 2728
1978 --signum; 2729 --signum;
1979 2730
1980#if EV_MULTIPLICITY 2731#if EV_MULTIPLICITY
1981 /* it is permissible to try to feed a signal to the wrong loop */ 2732 /* it is permissible to try to feed a signal to the wrong loop */
1982 /* or, likely more useful, feeding a signal nobody is waiting for */ 2733 /* or, likely more useful, feeding a signal nobody is waiting for */
1983 2734
1984 if (expect_false (signals [signum].loop != EV_A)) 2735 if (ecb_expect_false (signals [signum].loop != EV_A))
1985 return; 2736 return;
1986#endif 2737#endif
1987 2738
1988 signals [signum].pending = 0; 2739 signals [signum].pending = 0;
2740 ECB_MEMORY_FENCE_RELEASE;
1989 2741
1990 for (w = signals [signum].head; w; w = w->next) 2742 for (w = signals [signum].head; w; w = w->next)
1991 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2743 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1992} 2744}
1993 2745
… …
2084# include "ev_kqueue.c" 2836# include "ev_kqueue.c"
2085#endif 2837#endif
2086#if EV_USE_EPOLL 2838#if EV_USE_EPOLL
2087# include "ev_epoll.c" 2839# include "ev_epoll.c"
2088#endif 2840#endif
2841#if EV_USE_LINUXAIO
2842# include "ev_linuxaio.c"
2843#endif
2844#if EV_USE_IOURING
2845# include "ev_iouring.c"
2846#endif
2089#if EV_USE_POLL 2847#if EV_USE_POLL
2090# include "ev_poll.c" 2848# include "ev_poll.c"
2091#endif 2849#endif
2092#if EV_USE_SELECT 2850#if EV_USE_SELECT
2093# include "ev_select.c" 2851# include "ev_select.c"
2094#endif 2852#endif
2095 2853
2096int ecb_cold 2854ecb_cold int
2097ev_version_major (void) 2855ev_version_major (void) EV_NOEXCEPT
2098{ 2856{
2099 return EV_VERSION_MAJOR; 2857 return EV_VERSION_MAJOR;
2100} 2858}
2101 2859
2102int ecb_cold 2860ecb_cold int
2103ev_version_minor (void) 2861ev_version_minor (void) EV_NOEXCEPT
2104{ 2862{
2105 return EV_VERSION_MINOR; 2863 return EV_VERSION_MINOR;
2106} 2864}
2107 2865
2108/* return true if we are running with elevated privileges and should ignore env variables */ 2866/* return true if we are running with elevated privileges and should ignore env variables */
2109int inline_size ecb_cold 2867inline_size ecb_cold int
2110enable_secure (void) 2868enable_secure (void)
2111{ 2869{
2112#ifdef _WIN32 2870#ifdef _WIN32
2113 return 0; 2871 return 0;
2114#else 2872#else
2115 return getuid () != geteuid () 2873 return getuid () != geteuid ()
2116 || getgid () != getegid (); 2874 || getgid () != getegid ();
2117#endif 2875#endif
2118} 2876}
2119 2877
2120unsigned int ecb_cold 2878ecb_cold
2879unsigned int
2121ev_supported_backends (void) 2880ev_supported_backends (void) EV_NOEXCEPT
2122{ 2881{
2123 unsigned int flags = 0; 2882 unsigned int flags = 0;
2124 2883
2125 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2884 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2126 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2885 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
2127 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2886 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2887 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
2888 if (EV_USE_IOURING ) flags |= EVBACKEND_IOURING;
2128 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2889 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
2129 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2890 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
2130 2891
2131 return flags; 2892 return flags;
2132} 2893}
2133 2894
2134unsigned int ecb_cold 2895ecb_cold
2896unsigned int
2135ev_recommended_backends (void) 2897ev_recommended_backends (void) EV_NOEXCEPT
2136{ 2898{
2137 unsigned int flags = ev_supported_backends (); 2899 unsigned int flags = ev_supported_backends ();
2138 2900
2139#ifndef __NetBSD__ 2901#ifndef __NetBSD__
2140 /* kqueue is borked on everything but netbsd apparently */ 2902 /* kqueue is borked on everything but netbsd apparently */
… …
2148#endif 2910#endif
2149#ifdef __FreeBSD__ 2911#ifdef __FreeBSD__
2150 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ 2912 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2151#endif 2913#endif
2152 2914
2915 /* TODO: linuxaio is very experimental */
2916#if !EV_RECOMMEND_LINUXAIO
2917 flags &= ~EVBACKEND_LINUXAIO;
2918#endif
2919 /* TODO: linuxaio is super experimental */
2920#if !EV_RECOMMEND_IOURING
2921 flags &= ~EVBACKEND_IOURING;
2922#endif
2923
2153 return flags; 2924 return flags;
2154} 2925}
2155 2926
2156unsigned int ecb_cold 2927ecb_cold
2928unsigned int
2157ev_embeddable_backends (void) 2929ev_embeddable_backends (void) EV_NOEXCEPT
2158{ 2930{
2159 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2931 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2160 2932
2161 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2933 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2162 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 2934 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2163 flags &= ~EVBACKEND_EPOLL; 2935 flags &= ~EVBACKEND_EPOLL;
2164 2936
2937 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
2938
2939 /* EVBACKEND_IOURING is practically embeddable, but the current implementation is not
2940 * because our backend_fd is the epoll fd we need as fallback.
2941 * if the kernel ever is fixed, this might change...
2942 */
2943
2165 return flags; 2944 return flags;
2166} 2945}
2167 2946
2168unsigned int 2947unsigned int
2169ev_backend (EV_P) 2948ev_backend (EV_P) EV_NOEXCEPT
2170{ 2949{
2171 return backend; 2950 return backend;
2172} 2951}
2173 2952
2174#if EV_FEATURE_API 2953#if EV_FEATURE_API
2175unsigned int 2954unsigned int
2176ev_iteration (EV_P) 2955ev_iteration (EV_P) EV_NOEXCEPT
2177{ 2956{
2178 return loop_count; 2957 return loop_count;
2179} 2958}
2180 2959
2181unsigned int 2960unsigned int
2182ev_depth (EV_P) 2961ev_depth (EV_P) EV_NOEXCEPT
2183{ 2962{
2184 return loop_depth; 2963 return loop_depth;
2185} 2964}
2186 2965
2187void 2966void
2188ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2967ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2189{ 2968{
2190 io_blocktime = interval; 2969 io_blocktime = interval;
2191} 2970}
2192 2971
2193void 2972void
2194ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2973ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2195{ 2974{
2196 timeout_blocktime = interval; 2975 timeout_blocktime = interval;
2197} 2976}
2198 2977
2199void 2978void
2200ev_set_userdata (EV_P_ void *data) 2979ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2201{ 2980{
2202 userdata = data; 2981 userdata = data;
2203} 2982}
2204 2983
2205void * 2984void *
2206ev_userdata (EV_P) 2985ev_userdata (EV_P) EV_NOEXCEPT
2207{ 2986{
2208 return userdata; 2987 return userdata;
2209} 2988}
2210 2989
2211void 2990void
2212ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2991ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
2213{ 2992{
2214 invoke_cb = invoke_pending_cb; 2993 invoke_cb = invoke_pending_cb;
2215} 2994}
2216 2995
2217void 2996void
2218ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2997ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
2219{ 2998{
2220 release_cb = release; 2999 release_cb = release;
2221 acquire_cb = acquire; 3000 acquire_cb = acquire;
2222} 3001}
2223#endif 3002#endif
2224 3003
2225/* initialise a loop structure, must be zero-initialised */ 3004/* initialise a loop structure, must be zero-initialised */
2226static void noinline ecb_cold 3005ecb_noinline ecb_cold
3006static void
2227loop_init (EV_P_ unsigned int flags) 3007loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
2228{ 3008{
2229 if (!backend) 3009 if (!backend)
2230 { 3010 {
2231 origflags = flags; 3011 origflags = flags;
2232 3012
… …
2277#if EV_ASYNC_ENABLE 3057#if EV_ASYNC_ENABLE
2278 async_pending = 0; 3058 async_pending = 0;
2279#endif 3059#endif
2280 pipe_write_skipped = 0; 3060 pipe_write_skipped = 0;
2281 pipe_write_wanted = 0; 3061 pipe_write_wanted = 0;
3062 evpipe [0] = -1;
3063 evpipe [1] = -1;
2282#if EV_USE_INOTIFY 3064#if EV_USE_INOTIFY
2283 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3065 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2284#endif 3066#endif
2285#if EV_USE_SIGNALFD 3067#if EV_USE_SIGNALFD
2286 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 3068 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
… …
2288 3070
2289 if (!(flags & EVBACKEND_MASK)) 3071 if (!(flags & EVBACKEND_MASK))
2290 flags |= ev_recommended_backends (); 3072 flags |= ev_recommended_backends ();
2291 3073
2292#if EV_USE_IOCP 3074#if EV_USE_IOCP
2293 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 3075 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2294#endif 3076#endif
2295#if EV_USE_PORT 3077#if EV_USE_PORT
2296 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3078 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
2297#endif 3079#endif
2298#if EV_USE_KQUEUE 3080#if EV_USE_KQUEUE
2299 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 3081 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
3082#endif
3083#if EV_USE_IOURING
3084 if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
3085#endif
3086#if EV_USE_LINUXAIO
3087 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
2300#endif 3088#endif
2301#if EV_USE_EPOLL 3089#if EV_USE_EPOLL
2302 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3090 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
2303#endif 3091#endif
2304#if EV_USE_POLL 3092#if EV_USE_POLL
2305 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3093 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
2306#endif 3094#endif
2307#if EV_USE_SELECT 3095#if EV_USE_SELECT
2308 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3096 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
2309#endif 3097#endif
2310 3098
2311 ev_prepare_init (&pending_w, pendingcb); 3099 ev_prepare_init (&pending_w, pendingcb);
2312 3100
2313#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3101#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
2316#endif 3104#endif
2317 } 3105 }
2318} 3106}
2319 3107
2320/* free up a loop structure */ 3108/* free up a loop structure */
2321void ecb_cold 3109ecb_cold
3110void
2322ev_loop_destroy (EV_P) 3111ev_loop_destroy (EV_P)
2323{ 3112{
2324 int i; 3113 int i;
2325 3114
2326#if EV_MULTIPLICITY 3115#if EV_MULTIPLICITY
… …
2329 return; 3118 return;
2330#endif 3119#endif
2331 3120
2332#if EV_CLEANUP_ENABLE 3121#if EV_CLEANUP_ENABLE
2333 /* queue cleanup watchers (and execute them) */ 3122 /* queue cleanup watchers (and execute them) */
2334 if (expect_false (cleanupcnt)) 3123 if (ecb_expect_false (cleanupcnt))
2335 { 3124 {
2336 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); 3125 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2337 EV_INVOKE_PENDING; 3126 EV_INVOKE_PENDING;
2338 } 3127 }
2339#endif 3128#endif
2340 3129
2341#if EV_CHILD_ENABLE 3130#if EV_CHILD_ENABLE
2342 if (ev_is_active (&childev)) 3131 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2343 { 3132 {
2344 ev_ref (EV_A); /* child watcher */ 3133 ev_ref (EV_A); /* child watcher */
2345 ev_signal_stop (EV_A_ &childev); 3134 ev_signal_stop (EV_A_ &childev);
2346 } 3135 }
2347#endif 3136#endif
… …
2349 if (ev_is_active (&pipe_w)) 3138 if (ev_is_active (&pipe_w))
2350 { 3139 {
2351 /*ev_ref (EV_A);*/ 3140 /*ev_ref (EV_A);*/
2352 /*ev_io_stop (EV_A_ &pipe_w);*/ 3141 /*ev_io_stop (EV_A_ &pipe_w);*/
2353 3142
2354#if EV_USE_EVENTFD
2355 if (evfd >= 0)
2356 close (evfd);
2357#endif
2358
2359 if (evpipe [0] >= 0)
2360 {
2361 EV_WIN32_CLOSE_FD (evpipe [0]); 3143 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2362 EV_WIN32_CLOSE_FD (evpipe [1]); 3144 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2363 }
2364 } 3145 }
2365 3146
2366#if EV_USE_SIGNALFD 3147#if EV_USE_SIGNALFD
2367 if (ev_is_active (&sigfd_w)) 3148 if (ev_is_active (&sigfd_w))
2368 close (sigfd); 3149 close (sigfd);
… …
2375 3156
2376 if (backend_fd >= 0) 3157 if (backend_fd >= 0)
2377 close (backend_fd); 3158 close (backend_fd);
2378 3159
2379#if EV_USE_IOCP 3160#if EV_USE_IOCP
2380 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3161 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2381#endif 3162#endif
2382#if EV_USE_PORT 3163#if EV_USE_PORT
2383 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3164 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
2384#endif 3165#endif
2385#if EV_USE_KQUEUE 3166#if EV_USE_KQUEUE
2386 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3167 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3168#endif
3169#if EV_USE_IOURING
3170 if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
3171#endif
3172#if EV_USE_LINUXAIO
3173 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
2387#endif 3174#endif
2388#if EV_USE_EPOLL 3175#if EV_USE_EPOLL
2389 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3176 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
2390#endif 3177#endif
2391#if EV_USE_POLL 3178#if EV_USE_POLL
2392 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3179 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
2393#endif 3180#endif
2394#if EV_USE_SELECT 3181#if EV_USE_SELECT
2395 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3182 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
2396#endif 3183#endif
2397 3184
2398 for (i = NUMPRI; i--; ) 3185 for (i = NUMPRI; i--; )
2399 { 3186 {
2400 array_free (pending, [i]); 3187 array_free (pending, [i]);
… …
2442 3229
2443inline_size void 3230inline_size void
2444loop_fork (EV_P) 3231loop_fork (EV_P)
2445{ 3232{
2446#if EV_USE_PORT 3233#if EV_USE_PORT
2447 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3234 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
2448#endif 3235#endif
2449#if EV_USE_KQUEUE 3236#if EV_USE_KQUEUE
2450 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3237 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3238#endif
3239#if EV_USE_IOURING
3240 if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
3241#endif
3242#if EV_USE_LINUXAIO
3243 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
2451#endif 3244#endif
2452#if EV_USE_EPOLL 3245#if EV_USE_EPOLL
2453 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3246 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
2454#endif 3247#endif
2455#if EV_USE_INOTIFY 3248#if EV_USE_INOTIFY
2456 infy_fork (EV_A); 3249 infy_fork (EV_A);
2457#endif 3250#endif
2458 3251
3252#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2459 if (ev_is_active (&pipe_w)) 3253 if (ev_is_active (&pipe_w) && postfork != 2)
2460 { 3254 {
2461 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 3255 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2462 3256
2463 ev_ref (EV_A); 3257 ev_ref (EV_A);
2464 ev_io_stop (EV_A_ &pipe_w); 3258 ev_io_stop (EV_A_ &pipe_w);
2465 3259
2466#if EV_USE_EVENTFD
2467 if (evfd >= 0)
2468 close (evfd);
2469#endif
2470
2471 if (evpipe [0] >= 0) 3260 if (evpipe [0] >= 0)
2472 {
2473 EV_WIN32_CLOSE_FD (evpipe [0]); 3261 EV_WIN32_CLOSE_FD (evpipe [0]);
2474 EV_WIN32_CLOSE_FD (evpipe [1]);
2475 }
2476 3262
2477#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2478 evpipe_init (EV_A); 3263 evpipe_init (EV_A);
2479 /* now iterate over everything, in case we missed something */ 3264 /* iterate over everything, in case we missed something before */
2480 pipecb (EV_A_ &pipe_w, EV_READ); 3265 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2481#endif
2482 } 3266 }
3267#endif
2483 3268
2484 postfork = 0; 3269 postfork = 0;
2485} 3270}
2486 3271
2487#if EV_MULTIPLICITY 3272#if EV_MULTIPLICITY
2488 3273
3274ecb_cold
2489struct ev_loop * ecb_cold 3275struct ev_loop *
2490ev_loop_new (unsigned int flags) 3276ev_loop_new (unsigned int flags) EV_NOEXCEPT
2491{ 3277{
2492 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3278 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2493 3279
2494 memset (EV_A, 0, sizeof (struct ev_loop)); 3280 memset (EV_A, 0, sizeof (struct ev_loop));
2495 loop_init (EV_A_ flags); 3281 loop_init (EV_A_ flags);
… …
2502} 3288}
2503 3289
2504#endif /* multiplicity */ 3290#endif /* multiplicity */
2505 3291
2506#if EV_VERIFY 3292#if EV_VERIFY
2507static void noinline ecb_cold 3293ecb_noinline ecb_cold
3294static void
2508verify_watcher (EV_P_ W w) 3295verify_watcher (EV_P_ W w)
2509{ 3296{
2510 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3297 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2511 3298
2512 if (w->pending) 3299 if (w->pending)
2513 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3300 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2514} 3301}
2515 3302
2516static void noinline ecb_cold 3303ecb_noinline ecb_cold
3304static void
2517verify_heap (EV_P_ ANHE *heap, int N) 3305verify_heap (EV_P_ ANHE *heap, int N)
2518{ 3306{
2519 int i; 3307 int i;
2520 3308
2521 for (i = HEAP0; i < N + HEAP0; ++i) 3309 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2526 3314
2527 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3315 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2528 } 3316 }
2529} 3317}
2530 3318
2531static void noinline ecb_cold 3319ecb_noinline ecb_cold
3320static void
2532array_verify (EV_P_ W *ws, int cnt) 3321array_verify (EV_P_ W *ws, int cnt)
2533{ 3322{
2534 while (cnt--) 3323 while (cnt--)
2535 { 3324 {
2536 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3325 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2539} 3328}
2540#endif 3329#endif
2541 3330
2542#if EV_FEATURE_API 3331#if EV_FEATURE_API
2543void ecb_cold 3332void ecb_cold
2544ev_verify (EV_P) 3333ev_verify (EV_P) EV_NOEXCEPT
2545{ 3334{
2546#if EV_VERIFY 3335#if EV_VERIFY
2547 int i; 3336 int i;
2548 WL w; 3337 WL w, w2;
2549 3338
2550 assert (activecnt >= -1); 3339 assert (activecnt >= -1);
2551 3340
2552 assert (fdchangemax >= fdchangecnt); 3341 assert (fdchangemax >= fdchangecnt);
2553 for (i = 0; i < fdchangecnt; ++i) 3342 for (i = 0; i < fdchangecnt; ++i)
2554 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3343 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2555 3344
2556 assert (anfdmax >= 0); 3345 assert (anfdmax >= 0);
2557 for (i = 0; i < anfdmax; ++i) 3346 for (i = 0; i < anfdmax; ++i)
3347 {
3348 int j = 0;
3349
2558 for (w = anfds [i].head; w; w = w->next) 3350 for (w = w2 = anfds [i].head; w; w = w->next)
2559 { 3351 {
2560 verify_watcher (EV_A_ (W)w); 3352 verify_watcher (EV_A_ (W)w);
3353
3354 if (j++ & 1)
3355 {
3356 assert (("libev: io watcher list contains a loop", w != w2));
3357 w2 = w2->next;
3358 }
3359
2561 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3360 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2562 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3361 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2563 } 3362 }
3363 }
2564 3364
2565 assert (timermax >= timercnt); 3365 assert (timermax >= timercnt);
2566 verify_heap (EV_A_ timers, timercnt); 3366 verify_heap (EV_A_ timers, timercnt);
2567 3367
2568#if EV_PERIODIC_ENABLE 3368#if EV_PERIODIC_ENABLE
… …
2614#endif 3414#endif
2615} 3415}
2616#endif 3416#endif
2617 3417
2618#if EV_MULTIPLICITY 3418#if EV_MULTIPLICITY
3419ecb_cold
2619struct ev_loop * ecb_cold 3420struct ev_loop *
2620#else 3421#else
2621int 3422int
2622#endif 3423#endif
2623ev_default_loop (unsigned int flags) 3424ev_default_loop (unsigned int flags) EV_NOEXCEPT
2624{ 3425{
2625 if (!ev_default_loop_ptr) 3426 if (!ev_default_loop_ptr)
2626 { 3427 {
2627#if EV_MULTIPLICITY 3428#if EV_MULTIPLICITY
2628 EV_P = ev_default_loop_ptr = &default_loop_struct; 3429 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2647 3448
2648 return ev_default_loop_ptr; 3449 return ev_default_loop_ptr;
2649} 3450}
2650 3451
2651void 3452void
2652ev_loop_fork (EV_P) 3453ev_loop_fork (EV_P) EV_NOEXCEPT
2653{ 3454{
2654 postfork = 1; /* must be in line with ev_default_fork */ 3455 postfork = 1;
2655} 3456}
2656 3457
2657/*****************************************************************************/ 3458/*****************************************************************************/
2658 3459
2659void 3460void
… …
2661{ 3462{
2662 EV_CB_INVOKE ((W)w, revents); 3463 EV_CB_INVOKE ((W)w, revents);
2663} 3464}
2664 3465
2665unsigned int 3466unsigned int
2666ev_pending_count (EV_P) 3467ev_pending_count (EV_P) EV_NOEXCEPT
2667{ 3468{
2668 int pri; 3469 int pri;
2669 unsigned int count = 0; 3470 unsigned int count = 0;
2670 3471
2671 for (pri = NUMPRI; pri--; ) 3472 for (pri = NUMPRI; pri--; )
2672 count += pendingcnt [pri]; 3473 count += pendingcnt [pri];
2673 3474
2674 return count; 3475 return count;
2675} 3476}
2676 3477
2677void noinline 3478ecb_noinline
3479void
2678ev_invoke_pending (EV_P) 3480ev_invoke_pending (EV_P)
2679{ 3481{
2680 int pri; 3482 pendingpri = NUMPRI;
2681 3483
2682 for (pri = NUMPRI; pri--; ) 3484 do
3485 {
3486 --pendingpri;
3487
3488 /* pendingpri possibly gets modified in the inner loop */
2683 while (pendingcnt [pri]) 3489 while (pendingcnt [pendingpri])
2684 { 3490 {
2685 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3491 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2686 3492
2687 p->w->pending = 0; 3493 p->w->pending = 0;
2688 EV_CB_INVOKE (p->w, p->events); 3494 EV_CB_INVOKE (p->w, p->events);
2689 EV_FREQUENT_CHECK; 3495 EV_FREQUENT_CHECK;
2690 } 3496 }
3497 }
3498 while (pendingpri);
2691} 3499}
2692 3500
2693#if EV_IDLE_ENABLE 3501#if EV_IDLE_ENABLE
2694/* make idle watchers pending. this handles the "call-idle */ 3502/* make idle watchers pending. this handles the "call-idle */
2695/* only when higher priorities are idle" logic */ 3503/* only when higher priorities are idle" logic */
2696inline_size void 3504inline_size void
2697idle_reify (EV_P) 3505idle_reify (EV_P)
2698{ 3506{
2699 if (expect_false (idleall)) 3507 if (ecb_expect_false (idleall))
2700 { 3508 {
2701 int pri; 3509 int pri;
2702 3510
2703 for (pri = NUMPRI; pri--; ) 3511 for (pri = NUMPRI; pri--; )
2704 { 3512 {
… …
2753 } 3561 }
2754} 3562}
2755 3563
2756#if EV_PERIODIC_ENABLE 3564#if EV_PERIODIC_ENABLE
2757 3565
2758static void noinline 3566ecb_noinline
3567static void
2759periodic_recalc (EV_P_ ev_periodic *w) 3568periodic_recalc (EV_P_ ev_periodic *w)
2760{ 3569{
2761 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3570 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2762 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); 3571 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2763 3572
… …
2765 while (at <= ev_rt_now) 3574 while (at <= ev_rt_now)
2766 { 3575 {
2767 ev_tstamp nat = at + w->interval; 3576 ev_tstamp nat = at + w->interval;
2768 3577
2769 /* when resolution fails us, we use ev_rt_now */ 3578 /* when resolution fails us, we use ev_rt_now */
2770 if (expect_false (nat == at)) 3579 if (ecb_expect_false (nat == at))
2771 { 3580 {
2772 at = ev_rt_now; 3581 at = ev_rt_now;
2773 break; 3582 break;
2774 } 3583 }
2775 3584
… …
2785{ 3594{
2786 EV_FREQUENT_CHECK; 3595 EV_FREQUENT_CHECK;
2787 3596
2788 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3597 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2789 { 3598 {
2790 int feed_count = 0;
2791
2792 do 3599 do
2793 { 3600 {
2794 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3601 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2795 3602
2796 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3603 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2823 } 3630 }
2824} 3631}
2825 3632
2826/* simply recalculate all periodics */ 3633/* simply recalculate all periodics */
2827/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3634/* TODO: maybe ensure that at least one event happens when jumping forward? */
2828static void noinline ecb_cold 3635ecb_noinline ecb_cold
3636static void
2829periodics_reschedule (EV_P) 3637periodics_reschedule (EV_P)
2830{ 3638{
2831 int i; 3639 int i;
2832 3640
2833 /* adjust periodics after time jump */ 3641 /* adjust periodics after time jump */
… …
2846 reheap (periodics, periodiccnt); 3654 reheap (periodics, periodiccnt);
2847} 3655}
2848#endif 3656#endif
2849 3657
2850/* adjust all timers by a given offset */ 3658/* adjust all timers by a given offset */
2851static void noinline ecb_cold 3659ecb_noinline ecb_cold
3660static void
2852timers_reschedule (EV_P_ ev_tstamp adjust) 3661timers_reschedule (EV_P_ ev_tstamp adjust)
2853{ 3662{
2854 int i; 3663 int i;
2855 3664
2856 for (i = 0; i < timercnt; ++i) 3665 for (i = 0; i < timercnt; ++i)
… …
2865/* also detect if there was a timejump, and act accordingly */ 3674/* also detect if there was a timejump, and act accordingly */
2866inline_speed void 3675inline_speed void
2867time_update (EV_P_ ev_tstamp max_block) 3676time_update (EV_P_ ev_tstamp max_block)
2868{ 3677{
2869#if EV_USE_MONOTONIC 3678#if EV_USE_MONOTONIC
2870 if (expect_true (have_monotonic)) 3679 if (ecb_expect_true (have_monotonic))
2871 { 3680 {
2872 int i; 3681 int i;
2873 ev_tstamp odiff = rtmn_diff; 3682 ev_tstamp odiff = rtmn_diff;
2874 3683
2875 mn_now = get_clock (); 3684 mn_now = get_clock ();
2876 3685
2877 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3686 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2878 /* interpolate in the meantime */ 3687 /* interpolate in the meantime */
2879 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3688 if (ecb_expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
2880 { 3689 {
2881 ev_rt_now = rtmn_diff + mn_now; 3690 ev_rt_now = rtmn_diff + mn_now;
2882 return; 3691 return;
2883 } 3692 }
2884 3693
… …
2898 ev_tstamp diff; 3707 ev_tstamp diff;
2899 rtmn_diff = ev_rt_now - mn_now; 3708 rtmn_diff = ev_rt_now - mn_now;
2900 3709
2901 diff = odiff - rtmn_diff; 3710 diff = odiff - rtmn_diff;
2902 3711
2903 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP)) 3712 if (ecb_expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2904 return; /* all is well */ 3713 return; /* all is well */
2905 3714
2906 ev_rt_now = ev_time (); 3715 ev_rt_now = ev_time ();
2907 mn_now = get_clock (); 3716 mn_now = get_clock ();
2908 now_floor = mn_now; 3717 now_floor = mn_now;
… …
2917 else 3726 else
2918#endif 3727#endif
2919 { 3728 {
2920 ev_rt_now = ev_time (); 3729 ev_rt_now = ev_time ();
2921 3730
2922 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 3731 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
2923 { 3732 {
2924 /* adjust timers. this is easy, as the offset is the same for all of them */ 3733 /* adjust timers. this is easy, as the offset is the same for all of them */
2925 timers_reschedule (EV_A_ ev_rt_now - mn_now); 3734 timers_reschedule (EV_A_ ev_rt_now - mn_now);
2926#if EV_PERIODIC_ENABLE 3735#if EV_PERIODIC_ENABLE
2927 periodics_reschedule (EV_A); 3736 periodics_reschedule (EV_A);
… …
2930 3739
2931 mn_now = ev_rt_now; 3740 mn_now = ev_rt_now;
2932 } 3741 }
2933} 3742}
2934 3743
2935void 3744int
2936ev_run (EV_P_ int flags) 3745ev_run (EV_P_ int flags)
2937{ 3746{
2938#if EV_FEATURE_API 3747#if EV_FEATURE_API
2939 ++loop_depth; 3748 ++loop_depth;
2940#endif 3749#endif
… …
2950#if EV_VERIFY >= 2 3759#if EV_VERIFY >= 2
2951 ev_verify (EV_A); 3760 ev_verify (EV_A);
2952#endif 3761#endif
2953 3762
2954#ifndef _WIN32 3763#ifndef _WIN32
2955 if (expect_false (curpid)) /* penalise the forking check even more */ 3764 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
2956 if (expect_false (getpid () != curpid)) 3765 if (ecb_expect_false (getpid () != curpid))
2957 { 3766 {
2958 curpid = getpid (); 3767 curpid = getpid ();
2959 postfork = 1; 3768 postfork = 1;
2960 } 3769 }
2961#endif 3770#endif
2962 3771
2963#if EV_FORK_ENABLE 3772#if EV_FORK_ENABLE
2964 /* we might have forked, so queue fork handlers */ 3773 /* we might have forked, so queue fork handlers */
2965 if (expect_false (postfork)) 3774 if (ecb_expect_false (postfork))
2966 if (forkcnt) 3775 if (forkcnt)
2967 { 3776 {
2968 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3777 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2969 EV_INVOKE_PENDING; 3778 EV_INVOKE_PENDING;
2970 } 3779 }
2971#endif 3780#endif
2972 3781
2973#if EV_PREPARE_ENABLE 3782#if EV_PREPARE_ENABLE
2974 /* queue prepare watchers (and execute them) */ 3783 /* queue prepare watchers (and execute them) */
2975 if (expect_false (preparecnt)) 3784 if (ecb_expect_false (preparecnt))
2976 { 3785 {
2977 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3786 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2978 EV_INVOKE_PENDING; 3787 EV_INVOKE_PENDING;
2979 } 3788 }
2980#endif 3789#endif
2981 3790
2982 if (expect_false (loop_done)) 3791 if (ecb_expect_false (loop_done))
2983 break; 3792 break;
2984 3793
2985 /* we might have forked, so reify kernel state if necessary */ 3794 /* we might have forked, so reify kernel state if necessary */
2986 if (expect_false (postfork)) 3795 if (ecb_expect_false (postfork))
2987 loop_fork (EV_A); 3796 loop_fork (EV_A);
2988 3797
2989 /* update fd-related kernel structures */ 3798 /* update fd-related kernel structures */
2990 fd_reify (EV_A); 3799 fd_reify (EV_A);
2991 3800
… …
3003 /* from now on, we want a pipe-wake-up */ 3812 /* from now on, we want a pipe-wake-up */
3004 pipe_write_wanted = 1; 3813 pipe_write_wanted = 1;
3005 3814
3006 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */ 3815 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3007 3816
3008 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) 3817 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
3009 { 3818 {
3010 waittime = MAX_BLOCKTIME; 3819 waittime = MAX_BLOCKTIME;
3011 3820
3012 if (timercnt) 3821 if (timercnt)
3013 { 3822 {
… …
3022 if (waittime > to) waittime = to; 3831 if (waittime > to) waittime = to;
3023 } 3832 }
3024#endif 3833#endif
3025 3834
3026 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3835 /* don't let timeouts decrease the waittime below timeout_blocktime */
3027 if (expect_false (waittime < timeout_blocktime)) 3836 if (ecb_expect_false (waittime < timeout_blocktime))
3028 waittime = timeout_blocktime; 3837 waittime = timeout_blocktime;
3029 3838
3030 /* at this point, we NEED to wait, so we have to ensure */ 3839 /* at this point, we NEED to wait, so we have to ensure */
3031 /* to pass a minimum nonzero value to the backend */ 3840 /* to pass a minimum nonzero value to the backend */
3032 if (expect_false (waittime < backend_mintime)) 3841 if (ecb_expect_false (waittime < backend_mintime))
3033 waittime = backend_mintime; 3842 waittime = backend_mintime;
3034 3843
3035 /* extra check because io_blocktime is commonly 0 */ 3844 /* extra check because io_blocktime is commonly 0 */
3036 if (expect_false (io_blocktime)) 3845 if (ecb_expect_false (io_blocktime))
3037 { 3846 {
3038 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3847 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3039 3848
3040 if (sleeptime > waittime - backend_mintime) 3849 if (sleeptime > waittime - backend_mintime)
3041 sleeptime = waittime - backend_mintime; 3850 sleeptime = waittime - backend_mintime;
3042 3851
3043 if (expect_true (sleeptime > 0.)) 3852 if (ecb_expect_true (sleeptime > 0.))
3044 { 3853 {
3045 ev_sleep (sleeptime); 3854 ev_sleep (sleeptime);
3046 waittime -= sleeptime; 3855 waittime -= sleeptime;
3047 } 3856 }
3048 } 3857 }
… …
3055 backend_poll (EV_A_ waittime); 3864 backend_poll (EV_A_ waittime);
3056 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3865 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3057 3866
3058 pipe_write_wanted = 0; /* just an optimisation, no fence needed */ 3867 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3059 3868
3869 ECB_MEMORY_FENCE_ACQUIRE;
3060 if (pipe_write_skipped) 3870 if (pipe_write_skipped)
3061 { 3871 {
3062 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 3872 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3063 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3873 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3064 } 3874 }
3065 3875
3066
3067 /* update ev_rt_now, do magic */ 3876 /* update ev_rt_now, do magic */
3068 time_update (EV_A_ waittime + sleeptime); 3877 time_update (EV_A_ waittime + sleeptime);
3069 } 3878 }
3070 3879
3071 /* queue pending timers and reschedule them */ 3880 /* queue pending timers and reschedule them */
… …
3079 idle_reify (EV_A); 3888 idle_reify (EV_A);
3080#endif 3889#endif
3081 3890
3082#if EV_CHECK_ENABLE 3891#if EV_CHECK_ENABLE
3083 /* queue check watchers, to be executed first */ 3892 /* queue check watchers, to be executed first */
3084 if (expect_false (checkcnt)) 3893 if (ecb_expect_false (checkcnt))
3085 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3894 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3086#endif 3895#endif
3087 3896
3088 EV_INVOKE_PENDING; 3897 EV_INVOKE_PENDING;
3089 } 3898 }
3090 while (expect_true ( 3899 while (ecb_expect_true (
3091 activecnt 3900 activecnt
3092 && !loop_done 3901 && !loop_done
3093 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) 3902 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
3094 )); 3903 ));
3095 3904
… …
3097 loop_done = EVBREAK_CANCEL; 3906 loop_done = EVBREAK_CANCEL;
3098 3907
3099#if EV_FEATURE_API 3908#if EV_FEATURE_API
3100 --loop_depth; 3909 --loop_depth;
3101#endif 3910#endif
3102}
3103 3911
3912 return activecnt;
3913}
3914
3104void 3915void
3105ev_break (EV_P_ int how) 3916ev_break (EV_P_ int how) EV_NOEXCEPT
3106{ 3917{
3107 loop_done = how; 3918 loop_done = how;
3108} 3919}
3109 3920
3110void 3921void
3111ev_ref (EV_P) 3922ev_ref (EV_P) EV_NOEXCEPT
3112{ 3923{
3113 ++activecnt; 3924 ++activecnt;
3114} 3925}
3115 3926
3116void 3927void
3117ev_unref (EV_P) 3928ev_unref (EV_P) EV_NOEXCEPT
3118{ 3929{
3119 --activecnt; 3930 --activecnt;
3120} 3931}
3121 3932
3122void 3933void
3123ev_now_update (EV_P) 3934ev_now_update (EV_P) EV_NOEXCEPT
3124{ 3935{
3125 time_update (EV_A_ 1e100); 3936 time_update (EV_A_ 1e100);
3126} 3937}
3127 3938
3128void 3939void
3129ev_suspend (EV_P) 3940ev_suspend (EV_P) EV_NOEXCEPT
3130{ 3941{
3131 ev_now_update (EV_A); 3942 ev_now_update (EV_A);
3132} 3943}
3133 3944
3134void 3945void
3135ev_resume (EV_P) 3946ev_resume (EV_P) EV_NOEXCEPT
3136{ 3947{
3137 ev_tstamp mn_prev = mn_now; 3948 ev_tstamp mn_prev = mn_now;
3138 3949
3139 ev_now_update (EV_A); 3950 ev_now_update (EV_A);
3140 timers_reschedule (EV_A_ mn_now - mn_prev); 3951 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
3157inline_size void 3968inline_size void
3158wlist_del (WL *head, WL elem) 3969wlist_del (WL *head, WL elem)
3159{ 3970{
3160 while (*head) 3971 while (*head)
3161 { 3972 {
3162 if (expect_true (*head == elem)) 3973 if (ecb_expect_true (*head == elem))
3163 { 3974 {
3164 *head = elem->next; 3975 *head = elem->next;
3165 break; 3976 break;
3166 } 3977 }
3167 3978
… …
3179 w->pending = 0; 3990 w->pending = 0;
3180 } 3991 }
3181} 3992}
3182 3993
3183int 3994int
3184ev_clear_pending (EV_P_ void *w) 3995ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
3185{ 3996{
3186 W w_ = (W)w; 3997 W w_ = (W)w;
3187 int pending = w_->pending; 3998 int pending = w_->pending;
3188 3999
3189 if (expect_true (pending)) 4000 if (ecb_expect_true (pending))
3190 { 4001 {
3191 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4002 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3192 p->w = (W)&pending_w; 4003 p->w = (W)&pending_w;
3193 w_->pending = 0; 4004 w_->pending = 0;
3194 return p->events; 4005 return p->events;
… …
3221 w->active = 0; 4032 w->active = 0;
3222} 4033}
3223 4034
3224/*****************************************************************************/ 4035/*****************************************************************************/
3225 4036
3226void noinline 4037ecb_noinline
4038void
3227ev_io_start (EV_P_ ev_io *w) 4039ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
3228{ 4040{
3229 int fd = w->fd; 4041 int fd = w->fd;
3230 4042
3231 if (expect_false (ev_is_active (w))) 4043 if (ecb_expect_false (ev_is_active (w)))
3232 return; 4044 return;
3233 4045
3234 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4046 assert (("libev: ev_io_start called with negative fd", fd >= 0));
3235 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 4047 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
3236 4048
4049#if EV_VERIFY >= 2
4050 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4051#endif
3237 EV_FREQUENT_CHECK; 4052 EV_FREQUENT_CHECK;
3238 4053
3239 ev_start (EV_A_ (W)w, 1); 4054 ev_start (EV_A_ (W)w, 1);
3240 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4055 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
3241 wlist_add (&anfds[fd].head, (WL)w); 4056 wlist_add (&anfds[fd].head, (WL)w);
4057
4058 /* common bug, apparently */
4059 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3242 4060
3243 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 4061 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
3244 w->events &= ~EV__IOFDSET; 4062 w->events &= ~EV__IOFDSET;
3245 4063
3246 EV_FREQUENT_CHECK; 4064 EV_FREQUENT_CHECK;
3247} 4065}
3248 4066
3249void noinline 4067ecb_noinline
4068void
3250ev_io_stop (EV_P_ ev_io *w) 4069ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
3251{ 4070{
3252 clear_pending (EV_A_ (W)w); 4071 clear_pending (EV_A_ (W)w);
3253 if (expect_false (!ev_is_active (w))) 4072 if (ecb_expect_false (!ev_is_active (w)))
3254 return; 4073 return;
3255 4074
3256 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4075 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
3257 4076
4077#if EV_VERIFY >= 2
4078 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4079#endif
3258 EV_FREQUENT_CHECK; 4080 EV_FREQUENT_CHECK;
3259 4081
3260 wlist_del (&anfds[w->fd].head, (WL)w); 4082 wlist_del (&anfds[w->fd].head, (WL)w);
3261 ev_stop (EV_A_ (W)w); 4083 ev_stop (EV_A_ (W)w);
3262 4084
3263 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 4085 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3264 4086
3265 EV_FREQUENT_CHECK; 4087 EV_FREQUENT_CHECK;
3266} 4088}
3267 4089
3268void noinline 4090ecb_noinline
4091void
3269ev_timer_start (EV_P_ ev_timer *w) 4092ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
3270{ 4093{
3271 if (expect_false (ev_is_active (w))) 4094 if (ecb_expect_false (ev_is_active (w)))
3272 return; 4095 return;
3273 4096
3274 ev_at (w) += mn_now; 4097 ev_at (w) += mn_now;
3275 4098
3276 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4099 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
3277 4100
3278 EV_FREQUENT_CHECK; 4101 EV_FREQUENT_CHECK;
3279 4102
3280 ++timercnt; 4103 ++timercnt;
3281 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4104 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
3282 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4105 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
3283 ANHE_w (timers [ev_active (w)]) = (WT)w; 4106 ANHE_w (timers [ev_active (w)]) = (WT)w;
3284 ANHE_at_cache (timers [ev_active (w)]); 4107 ANHE_at_cache (timers [ev_active (w)]);
3285 upheap (timers, ev_active (w)); 4108 upheap (timers, ev_active (w));
3286 4109
3287 EV_FREQUENT_CHECK; 4110 EV_FREQUENT_CHECK;
3288 4111
3289 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4112 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
3290} 4113}
3291 4114
3292void noinline 4115ecb_noinline
4116void
3293ev_timer_stop (EV_P_ ev_timer *w) 4117ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
3294{ 4118{
3295 clear_pending (EV_A_ (W)w); 4119 clear_pending (EV_A_ (W)w);
3296 if (expect_false (!ev_is_active (w))) 4120 if (ecb_expect_false (!ev_is_active (w)))
3297 return; 4121 return;
3298 4122
3299 EV_FREQUENT_CHECK; 4123 EV_FREQUENT_CHECK;
3300 4124
3301 { 4125 {
… …
3303 4127
3304 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4128 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
3305 4129
3306 --timercnt; 4130 --timercnt;
3307 4131
3308 if (expect_true (active < timercnt + HEAP0)) 4132 if (ecb_expect_true (active < timercnt + HEAP0))
3309 { 4133 {
3310 timers [active] = timers [timercnt + HEAP0]; 4134 timers [active] = timers [timercnt + HEAP0];
3311 adjustheap (timers, timercnt, active); 4135 adjustheap (timers, timercnt, active);
3312 } 4136 }
3313 } 4137 }
… …
3317 ev_stop (EV_A_ (W)w); 4141 ev_stop (EV_A_ (W)w);
3318 4142
3319 EV_FREQUENT_CHECK; 4143 EV_FREQUENT_CHECK;
3320} 4144}
3321 4145
3322void noinline 4146ecb_noinline
4147void
3323ev_timer_again (EV_P_ ev_timer *w) 4148ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
3324{ 4149{
3325 EV_FREQUENT_CHECK; 4150 EV_FREQUENT_CHECK;
3326 4151
3327 clear_pending (EV_A_ (W)w); 4152 clear_pending (EV_A_ (W)w);
3328 4153
… …
3345 4170
3346 EV_FREQUENT_CHECK; 4171 EV_FREQUENT_CHECK;
3347} 4172}
3348 4173
3349ev_tstamp 4174ev_tstamp
3350ev_timer_remaining (EV_P_ ev_timer *w) 4175ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
3351{ 4176{
3352 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4177 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3353} 4178}
3354 4179
3355#if EV_PERIODIC_ENABLE 4180#if EV_PERIODIC_ENABLE
3356void noinline 4181ecb_noinline
4182void
3357ev_periodic_start (EV_P_ ev_periodic *w) 4183ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
3358{ 4184{
3359 if (expect_false (ev_is_active (w))) 4185 if (ecb_expect_false (ev_is_active (w)))
3360 return; 4186 return;
3361 4187
3362 if (w->reschedule_cb) 4188 if (w->reschedule_cb)
3363 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4189 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
3364 else if (w->interval) 4190 else if (w->interval)
… …
3371 4197
3372 EV_FREQUENT_CHECK; 4198 EV_FREQUENT_CHECK;
3373 4199
3374 ++periodiccnt; 4200 ++periodiccnt;
3375 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4201 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
3376 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4202 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
3377 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4203 ANHE_w (periodics [ev_active (w)]) = (WT)w;
3378 ANHE_at_cache (periodics [ev_active (w)]); 4204 ANHE_at_cache (periodics [ev_active (w)]);
3379 upheap (periodics, ev_active (w)); 4205 upheap (periodics, ev_active (w));
3380 4206
3381 EV_FREQUENT_CHECK; 4207 EV_FREQUENT_CHECK;
3382 4208
3383 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4209 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
3384} 4210}
3385 4211
3386void noinline 4212ecb_noinline
4213void
3387ev_periodic_stop (EV_P_ ev_periodic *w) 4214ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
3388{ 4215{
3389 clear_pending (EV_A_ (W)w); 4216 clear_pending (EV_A_ (W)w);
3390 if (expect_false (!ev_is_active (w))) 4217 if (ecb_expect_false (!ev_is_active (w)))
3391 return; 4218 return;
3392 4219
3393 EV_FREQUENT_CHECK; 4220 EV_FREQUENT_CHECK;
3394 4221
3395 { 4222 {
… …
3397 4224
3398 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4225 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
3399 4226
3400 --periodiccnt; 4227 --periodiccnt;
3401 4228
3402 if (expect_true (active < periodiccnt + HEAP0)) 4229 if (ecb_expect_true (active < periodiccnt + HEAP0))
3403 { 4230 {
3404 periodics [active] = periodics [periodiccnt + HEAP0]; 4231 periodics [active] = periodics [periodiccnt + HEAP0];
3405 adjustheap (periodics, periodiccnt, active); 4232 adjustheap (periodics, periodiccnt, active);
3406 } 4233 }
3407 } 4234 }
… …
3409 ev_stop (EV_A_ (W)w); 4236 ev_stop (EV_A_ (W)w);
3410 4237
3411 EV_FREQUENT_CHECK; 4238 EV_FREQUENT_CHECK;
3412} 4239}
3413 4240
3414void noinline 4241ecb_noinline
4242void
3415ev_periodic_again (EV_P_ ev_periodic *w) 4243ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
3416{ 4244{
3417 /* TODO: use adjustheap and recalculation */ 4245 /* TODO: use adjustheap and recalculation */
3418 ev_periodic_stop (EV_A_ w); 4246 ev_periodic_stop (EV_A_ w);
3419 ev_periodic_start (EV_A_ w); 4247 ev_periodic_start (EV_A_ w);
3420} 4248}
… …
3424# define SA_RESTART 0 4252# define SA_RESTART 0
3425#endif 4253#endif
3426 4254
3427#if EV_SIGNAL_ENABLE 4255#if EV_SIGNAL_ENABLE
3428 4256
3429void noinline 4257ecb_noinline
4258void
3430ev_signal_start (EV_P_ ev_signal *w) 4259ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
3431{ 4260{
3432 if (expect_false (ev_is_active (w))) 4261 if (ecb_expect_false (ev_is_active (w)))
3433 return; 4262 return;
3434 4263
3435 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4264 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
3436 4265
3437#if EV_MULTIPLICITY 4266#if EV_MULTIPLICITY
3438 assert (("libev: a signal must not be attached to two different loops", 4267 assert (("libev: a signal must not be attached to two different loops",
3439 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4268 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3440 4269
3441 signals [w->signum - 1].loop = EV_A; 4270 signals [w->signum - 1].loop = EV_A;
4271 ECB_MEMORY_FENCE_RELEASE;
3442#endif 4272#endif
3443 4273
3444 EV_FREQUENT_CHECK; 4274 EV_FREQUENT_CHECK;
3445 4275
3446#if EV_USE_SIGNALFD 4276#if EV_USE_SIGNALFD
… …
3505 } 4335 }
3506 4336
3507 EV_FREQUENT_CHECK; 4337 EV_FREQUENT_CHECK;
3508} 4338}
3509 4339
3510void noinline 4340ecb_noinline
4341void
3511ev_signal_stop (EV_P_ ev_signal *w) 4342ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
3512{ 4343{
3513 clear_pending (EV_A_ (W)w); 4344 clear_pending (EV_A_ (W)w);
3514 if (expect_false (!ev_is_active (w))) 4345 if (ecb_expect_false (!ev_is_active (w)))
3515 return; 4346 return;
3516 4347
3517 EV_FREQUENT_CHECK; 4348 EV_FREQUENT_CHECK;
3518 4349
3519 wlist_del (&signals [w->signum - 1].head, (WL)w); 4350 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
3547#endif 4378#endif
3548 4379
3549#if EV_CHILD_ENABLE 4380#if EV_CHILD_ENABLE
3550 4381
3551void 4382void
3552ev_child_start (EV_P_ ev_child *w) 4383ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
3553{ 4384{
3554#if EV_MULTIPLICITY 4385#if EV_MULTIPLICITY
3555 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4386 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3556#endif 4387#endif
3557 if (expect_false (ev_is_active (w))) 4388 if (ecb_expect_false (ev_is_active (w)))
3558 return; 4389 return;
3559 4390
3560 EV_FREQUENT_CHECK; 4391 EV_FREQUENT_CHECK;
3561 4392
3562 ev_start (EV_A_ (W)w, 1); 4393 ev_start (EV_A_ (W)w, 1);
… …
3564 4395
3565 EV_FREQUENT_CHECK; 4396 EV_FREQUENT_CHECK;
3566} 4397}
3567 4398
3568void 4399void
3569ev_child_stop (EV_P_ ev_child *w) 4400ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
3570{ 4401{
3571 clear_pending (EV_A_ (W)w); 4402 clear_pending (EV_A_ (W)w);
3572 if (expect_false (!ev_is_active (w))) 4403 if (ecb_expect_false (!ev_is_active (w)))
3573 return; 4404 return;
3574 4405
3575 EV_FREQUENT_CHECK; 4406 EV_FREQUENT_CHECK;
3576 4407
3577 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); 4408 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
… …
3591 4422
3592#define DEF_STAT_INTERVAL 5.0074891 4423#define DEF_STAT_INTERVAL 5.0074891
3593#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4424#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3594#define MIN_STAT_INTERVAL 0.1074891 4425#define MIN_STAT_INTERVAL 0.1074891
3595 4426
3596static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4427ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
3597 4428
3598#if EV_USE_INOTIFY 4429#if EV_USE_INOTIFY
3599 4430
3600/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4431/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3601# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4432# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3602 4433
3603static void noinline 4434ecb_noinline
4435static void
3604infy_add (EV_P_ ev_stat *w) 4436infy_add (EV_P_ ev_stat *w)
3605{ 4437{
3606 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); 4438 w->wd = inotify_add_watch (fs_fd, w->path,
4439 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4440 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4441 | IN_DONT_FOLLOW | IN_MASK_ADD);
3607 4442
3608 if (w->wd >= 0) 4443 if (w->wd >= 0)
3609 { 4444 {
3610 struct statfs sfs; 4445 struct statfs sfs;
3611 4446
… …
3615 4450
3616 if (!fs_2625) 4451 if (!fs_2625)
3617 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4452 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3618 else if (!statfs (w->path, &sfs) 4453 else if (!statfs (w->path, &sfs)
3619 && (sfs.f_type == 0x1373 /* devfs */ 4454 && (sfs.f_type == 0x1373 /* devfs */
4455 || sfs.f_type == 0x4006 /* fat */
4456 || sfs.f_type == 0x4d44 /* msdos */
3620 || sfs.f_type == 0xEF53 /* ext2/3 */ 4457 || sfs.f_type == 0xEF53 /* ext2/3 */
4458 || sfs.f_type == 0x72b6 /* jffs2 */
4459 || sfs.f_type == 0x858458f6 /* ramfs */
4460 || sfs.f_type == 0x5346544e /* ntfs */
3621 || sfs.f_type == 0x3153464a /* jfs */ 4461 || sfs.f_type == 0x3153464a /* jfs */
4462 || sfs.f_type == 0x9123683e /* btrfs */
3622 || sfs.f_type == 0x52654973 /* reiser3 */ 4463 || sfs.f_type == 0x52654973 /* reiser3 */
3623 || sfs.f_type == 0x01021994 /* tempfs */ 4464 || sfs.f_type == 0x01021994 /* tmpfs */
3624 || sfs.f_type == 0x58465342 /* xfs */)) 4465 || sfs.f_type == 0x58465342 /* xfs */))
3625 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4466 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3626 else 4467 else
3627 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4468 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3628 } 4469 }
… …
3663 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4504 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3664 ev_timer_again (EV_A_ &w->timer); 4505 ev_timer_again (EV_A_ &w->timer);
3665 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4506 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3666} 4507}
3667 4508
3668static void noinline 4509ecb_noinline
4510static void
3669infy_del (EV_P_ ev_stat *w) 4511infy_del (EV_P_ ev_stat *w)
3670{ 4512{
3671 int slot; 4513 int slot;
3672 int wd = w->wd; 4514 int wd = w->wd;
3673 4515
… …
3680 4522
3681 /* remove this watcher, if others are watching it, they will rearm */ 4523 /* remove this watcher, if others are watching it, they will rearm */
3682 inotify_rm_watch (fs_fd, wd); 4524 inotify_rm_watch (fs_fd, wd);
3683} 4525}
3684 4526
3685static void noinline 4527ecb_noinline
4528static void
3686infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4529infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3687{ 4530{
3688 if (slot < 0) 4531 if (slot < 0)
3689 /* overflow, need to check for all hash slots */ 4532 /* overflow, need to check for all hash slots */
3690 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4533 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3726 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4569 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3727 ofs += sizeof (struct inotify_event) + ev->len; 4570 ofs += sizeof (struct inotify_event) + ev->len;
3728 } 4571 }
3729} 4572}
3730 4573
3731inline_size void ecb_cold 4574inline_size ecb_cold
4575void
3732ev_check_2625 (EV_P) 4576ev_check_2625 (EV_P)
3733{ 4577{
3734 /* kernels < 2.6.25 are borked 4578 /* kernels < 2.6.25 are borked
3735 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4579 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3736 */ 4580 */
… …
3826#else 4670#else
3827# define EV_LSTAT(p,b) lstat (p, b) 4671# define EV_LSTAT(p,b) lstat (p, b)
3828#endif 4672#endif
3829 4673
3830void 4674void
3831ev_stat_stat (EV_P_ ev_stat *w) 4675ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3832{ 4676{
3833 if (lstat (w->path, &w->attr) < 0) 4677 if (lstat (w->path, &w->attr) < 0)
3834 w->attr.st_nlink = 0; 4678 w->attr.st_nlink = 0;
3835 else if (!w->attr.st_nlink) 4679 else if (!w->attr.st_nlink)
3836 w->attr.st_nlink = 1; 4680 w->attr.st_nlink = 1;
3837} 4681}
3838 4682
3839static void noinline 4683ecb_noinline
4684static void
3840stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4685stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3841{ 4686{
3842 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4687 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3843 4688
3844 ev_statdata prev = w->attr; 4689 ev_statdata prev = w->attr;
… …
3875 ev_feed_event (EV_A_ w, EV_STAT); 4720 ev_feed_event (EV_A_ w, EV_STAT);
3876 } 4721 }
3877} 4722}
3878 4723
3879void 4724void
3880ev_stat_start (EV_P_ ev_stat *w) 4725ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3881{ 4726{
3882 if (expect_false (ev_is_active (w))) 4727 if (ecb_expect_false (ev_is_active (w)))
3883 return; 4728 return;
3884 4729
3885 ev_stat_stat (EV_A_ w); 4730 ev_stat_stat (EV_A_ w);
3886 4731
3887 if (w->interval < MIN_STAT_INTERVAL && w->interval) 4732 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
3906 4751
3907 EV_FREQUENT_CHECK; 4752 EV_FREQUENT_CHECK;
3908} 4753}
3909 4754
3910void 4755void
3911ev_stat_stop (EV_P_ ev_stat *w) 4756ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3912{ 4757{
3913 clear_pending (EV_A_ (W)w); 4758 clear_pending (EV_A_ (W)w);
3914 if (expect_false (!ev_is_active (w))) 4759 if (ecb_expect_false (!ev_is_active (w)))
3915 return; 4760 return;
3916 4761
3917 EV_FREQUENT_CHECK; 4762 EV_FREQUENT_CHECK;
3918 4763
3919#if EV_USE_INOTIFY 4764#if EV_USE_INOTIFY
… …
3932} 4777}
3933#endif 4778#endif
3934 4779
3935#if EV_IDLE_ENABLE 4780#if EV_IDLE_ENABLE
3936void 4781void
3937ev_idle_start (EV_P_ ev_idle *w) 4782ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3938{ 4783{
3939 if (expect_false (ev_is_active (w))) 4784 if (ecb_expect_false (ev_is_active (w)))
3940 return; 4785 return;
3941 4786
3942 pri_adjust (EV_A_ (W)w); 4787 pri_adjust (EV_A_ (W)w);
3943 4788
3944 EV_FREQUENT_CHECK; 4789 EV_FREQUENT_CHECK;
… …
3947 int active = ++idlecnt [ABSPRI (w)]; 4792 int active = ++idlecnt [ABSPRI (w)];
3948 4793
3949 ++idleall; 4794 ++idleall;
3950 ev_start (EV_A_ (W)w, active); 4795 ev_start (EV_A_ (W)w, active);
3951 4796
3952 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4797 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
3953 idles [ABSPRI (w)][active - 1] = w; 4798 idles [ABSPRI (w)][active - 1] = w;
3954 } 4799 }
3955 4800
3956 EV_FREQUENT_CHECK; 4801 EV_FREQUENT_CHECK;
3957} 4802}
3958 4803
3959void 4804void
3960ev_idle_stop (EV_P_ ev_idle *w) 4805ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3961{ 4806{
3962 clear_pending (EV_A_ (W)w); 4807 clear_pending (EV_A_ (W)w);
3963 if (expect_false (!ev_is_active (w))) 4808 if (ecb_expect_false (!ev_is_active (w)))
3964 return; 4809 return;
3965 4810
3966 EV_FREQUENT_CHECK; 4811 EV_FREQUENT_CHECK;
3967 4812
3968 { 4813 {
… …
3979} 4824}
3980#endif 4825#endif
3981 4826
3982#if EV_PREPARE_ENABLE 4827#if EV_PREPARE_ENABLE
3983void 4828void
3984ev_prepare_start (EV_P_ ev_prepare *w) 4829ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3985{ 4830{
3986 if (expect_false (ev_is_active (w))) 4831 if (ecb_expect_false (ev_is_active (w)))
3987 return; 4832 return;
3988 4833
3989 EV_FREQUENT_CHECK; 4834 EV_FREQUENT_CHECK;
3990 4835
3991 ev_start (EV_A_ (W)w, ++preparecnt); 4836 ev_start (EV_A_ (W)w, ++preparecnt);
3992 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4837 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3993 prepares [preparecnt - 1] = w; 4838 prepares [preparecnt - 1] = w;
3994 4839
3995 EV_FREQUENT_CHECK; 4840 EV_FREQUENT_CHECK;
3996} 4841}
3997 4842
3998void 4843void
3999ev_prepare_stop (EV_P_ ev_prepare *w) 4844ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
4000{ 4845{
4001 clear_pending (EV_A_ (W)w); 4846 clear_pending (EV_A_ (W)w);
4002 if (expect_false (!ev_is_active (w))) 4847 if (ecb_expect_false (!ev_is_active (w)))
4003 return; 4848 return;
4004 4849
4005 EV_FREQUENT_CHECK; 4850 EV_FREQUENT_CHECK;
4006 4851
4007 { 4852 {
… …
4017} 4862}
4018#endif 4863#endif
4019 4864
4020#if EV_CHECK_ENABLE 4865#if EV_CHECK_ENABLE
4021void 4866void
4022ev_check_start (EV_P_ ev_check *w) 4867ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
4023{ 4868{
4024 if (expect_false (ev_is_active (w))) 4869 if (ecb_expect_false (ev_is_active (w)))
4025 return; 4870 return;
4026 4871
4027 EV_FREQUENT_CHECK; 4872 EV_FREQUENT_CHECK;
4028 4873
4029 ev_start (EV_A_ (W)w, ++checkcnt); 4874 ev_start (EV_A_ (W)w, ++checkcnt);
4030 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4875 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
4031 checks [checkcnt - 1] = w; 4876 checks [checkcnt - 1] = w;
4032 4877
4033 EV_FREQUENT_CHECK; 4878 EV_FREQUENT_CHECK;
4034} 4879}
4035 4880
4036void 4881void
4037ev_check_stop (EV_P_ ev_check *w) 4882ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
4038{ 4883{
4039 clear_pending (EV_A_ (W)w); 4884 clear_pending (EV_A_ (W)w);
4040 if (expect_false (!ev_is_active (w))) 4885 if (ecb_expect_false (!ev_is_active (w)))
4041 return; 4886 return;
4042 4887
4043 EV_FREQUENT_CHECK; 4888 EV_FREQUENT_CHECK;
4044 4889
4045 { 4890 {
… …
4054 EV_FREQUENT_CHECK; 4899 EV_FREQUENT_CHECK;
4055} 4900}
4056#endif 4901#endif
4057 4902
4058#if EV_EMBED_ENABLE 4903#if EV_EMBED_ENABLE
4059void noinline 4904ecb_noinline
4905void
4060ev_embed_sweep (EV_P_ ev_embed *w) 4906ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
4061{ 4907{
4062 ev_run (w->other, EVRUN_NOWAIT); 4908 ev_run (w->other, EVRUN_NOWAIT);
4063} 4909}
4064 4910
4065static void 4911static void
… …
4113 ev_idle_stop (EV_A_ idle); 4959 ev_idle_stop (EV_A_ idle);
4114} 4960}
4115#endif 4961#endif
4116 4962
4117void 4963void
4118ev_embed_start (EV_P_ ev_embed *w) 4964ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
4119{ 4965{
4120 if (expect_false (ev_is_active (w))) 4966 if (ecb_expect_false (ev_is_active (w)))
4121 return; 4967 return;
4122 4968
4123 { 4969 {
4124 EV_P = w->other; 4970 EV_P = w->other;
4125 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4971 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
… …
4144 4990
4145 EV_FREQUENT_CHECK; 4991 EV_FREQUENT_CHECK;
4146} 4992}
4147 4993
4148void 4994void
4149ev_embed_stop (EV_P_ ev_embed *w) 4995ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
4150{ 4996{
4151 clear_pending (EV_A_ (W)w); 4997 clear_pending (EV_A_ (W)w);
4152 if (expect_false (!ev_is_active (w))) 4998 if (ecb_expect_false (!ev_is_active (w)))
4153 return; 4999 return;
4154 5000
4155 EV_FREQUENT_CHECK; 5001 EV_FREQUENT_CHECK;
4156 5002
4157 ev_io_stop (EV_A_ &w->io); 5003 ev_io_stop (EV_A_ &w->io);
… …
4164} 5010}
4165#endif 5011#endif
4166 5012
4167#if EV_FORK_ENABLE 5013#if EV_FORK_ENABLE
4168void 5014void
4169ev_fork_start (EV_P_ ev_fork *w) 5015ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
4170{ 5016{
4171 if (expect_false (ev_is_active (w))) 5017 if (ecb_expect_false (ev_is_active (w)))
4172 return; 5018 return;
4173 5019
4174 EV_FREQUENT_CHECK; 5020 EV_FREQUENT_CHECK;
4175 5021
4176 ev_start (EV_A_ (W)w, ++forkcnt); 5022 ev_start (EV_A_ (W)w, ++forkcnt);
4177 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5023 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
4178 forks [forkcnt - 1] = w; 5024 forks [forkcnt - 1] = w;
4179 5025
4180 EV_FREQUENT_CHECK; 5026 EV_FREQUENT_CHECK;
4181} 5027}
4182 5028
4183void 5029void
4184ev_fork_stop (EV_P_ ev_fork *w) 5030ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
4185{ 5031{
4186 clear_pending (EV_A_ (W)w); 5032 clear_pending (EV_A_ (W)w);
4187 if (expect_false (!ev_is_active (w))) 5033 if (ecb_expect_false (!ev_is_active (w)))
4188 return; 5034 return;
4189 5035
4190 EV_FREQUENT_CHECK; 5036 EV_FREQUENT_CHECK;
4191 5037
4192 { 5038 {
… …
4202} 5048}
4203#endif 5049#endif
4204 5050
4205#if EV_CLEANUP_ENABLE 5051#if EV_CLEANUP_ENABLE
4206void 5052void
4207ev_cleanup_start (EV_P_ ev_cleanup *w) 5053ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4208{ 5054{
4209 if (expect_false (ev_is_active (w))) 5055 if (ecb_expect_false (ev_is_active (w)))
4210 return; 5056 return;
4211 5057
4212 EV_FREQUENT_CHECK; 5058 EV_FREQUENT_CHECK;
4213 5059
4214 ev_start (EV_A_ (W)w, ++cleanupcnt); 5060 ev_start (EV_A_ (W)w, ++cleanupcnt);
4215 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 5061 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
4216 cleanups [cleanupcnt - 1] = w; 5062 cleanups [cleanupcnt - 1] = w;
4217 5063
4218 /* cleanup watchers should never keep a refcount on the loop */ 5064 /* cleanup watchers should never keep a refcount on the loop */
4219 ev_unref (EV_A); 5065 ev_unref (EV_A);
4220 EV_FREQUENT_CHECK; 5066 EV_FREQUENT_CHECK;
4221} 5067}
4222 5068
4223void 5069void
4224ev_cleanup_stop (EV_P_ ev_cleanup *w) 5070ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4225{ 5071{
4226 clear_pending (EV_A_ (W)w); 5072 clear_pending (EV_A_ (W)w);
4227 if (expect_false (!ev_is_active (w))) 5073 if (ecb_expect_false (!ev_is_active (w)))
4228 return; 5074 return;
4229 5075
4230 EV_FREQUENT_CHECK; 5076 EV_FREQUENT_CHECK;
4231 ev_ref (EV_A); 5077 ev_ref (EV_A);
4232 5078
… …
4243} 5089}
4244#endif 5090#endif
4245 5091
4246#if EV_ASYNC_ENABLE 5092#if EV_ASYNC_ENABLE
4247void 5093void
4248ev_async_start (EV_P_ ev_async *w) 5094ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4249{ 5095{
4250 if (expect_false (ev_is_active (w))) 5096 if (ecb_expect_false (ev_is_active (w)))
4251 return; 5097 return;
4252 5098
4253 w->sent = 0; 5099 w->sent = 0;
4254 5100
4255 evpipe_init (EV_A); 5101 evpipe_init (EV_A);
4256 5102
4257 EV_FREQUENT_CHECK; 5103 EV_FREQUENT_CHECK;
4258 5104
4259 ev_start (EV_A_ (W)w, ++asynccnt); 5105 ev_start (EV_A_ (W)w, ++asynccnt);
4260 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5106 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
4261 asyncs [asynccnt - 1] = w; 5107 asyncs [asynccnt - 1] = w;
4262 5108
4263 EV_FREQUENT_CHECK; 5109 EV_FREQUENT_CHECK;
4264} 5110}
4265 5111
4266void 5112void
4267ev_async_stop (EV_P_ ev_async *w) 5113ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4268{ 5114{
4269 clear_pending (EV_A_ (W)w); 5115 clear_pending (EV_A_ (W)w);
4270 if (expect_false (!ev_is_active (w))) 5116 if (ecb_expect_false (!ev_is_active (w)))
4271 return; 5117 return;
4272 5118
4273 EV_FREQUENT_CHECK; 5119 EV_FREQUENT_CHECK;
4274 5120
4275 { 5121 {
… …
4283 5129
4284 EV_FREQUENT_CHECK; 5130 EV_FREQUENT_CHECK;
4285} 5131}
4286 5132
4287void 5133void
4288ev_async_send (EV_P_ ev_async *w) 5134ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
4289{ 5135{
4290 w->sent = 1; 5136 w->sent = 1;
4291 evpipe_write (EV_A_ &async_pending); 5137 evpipe_write (EV_A_ &async_pending);
4292} 5138}
4293#endif 5139#endif
… …
4330 5176
4331 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5177 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
4332} 5178}
4333 5179
4334void 5180void
4335ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5181ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
4336{ 5182{
4337 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5183 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
4338
4339 if (expect_false (!once))
4340 {
4341 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
4342 return;
4343 }
4344 5184
4345 once->cb = cb; 5185 once->cb = cb;
4346 once->arg = arg; 5186 once->arg = arg;
4347 5187
4348 ev_init (&once->io, once_cb_io); 5188 ev_init (&once->io, once_cb_io);
… …
4361} 5201}
4362 5202
4363/*****************************************************************************/ 5203/*****************************************************************************/
4364 5204
4365#if EV_WALK_ENABLE 5205#if EV_WALK_ENABLE
4366void ecb_cold 5206ecb_cold
5207void
4367ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5208ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
4368{ 5209{
4369 int i, j; 5210 int i, j;
4370 ev_watcher_list *wl, *wn; 5211 ev_watcher_list *wl, *wn;
4371 5212
4372 if (types & (EV_IO | EV_EMBED)) 5213 if (types & (EV_IO | EV_EMBED))

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