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Comparing libev/ev.c (file contents):
Revision 1.413 by root, Fri Mar 23 19:06:08 2012 UTC vs.
Revision 1.508 by root, Thu Jul 11 08:29:08 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
… …
59# endif 59# endif
60# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
62# endif 62# endif
63# endif 63# endif
64# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
65# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
66# endif 66# endif
67 67
68# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
69# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
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
212 232
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
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
225/* use what's provided */ 237/* use what's provided */
226#elif defined (NSIG) 238#elif defined NSIG
227# define EV_NSIG (NSIG) 239# define EV_NSIG (NSIG)
228#elif defined(_NSIG) 240#elif defined _NSIG
229# define EV_NSIG (_NSIG) 241# define EV_NSIG (_NSIG)
230#elif defined (SIGMAX) 242#elif defined SIGMAX
231# define EV_NSIG (SIGMAX+1) 243# define EV_NSIG (SIGMAX+1)
232#elif defined (SIG_MAX) 244#elif defined SIG_MAX
233# define EV_NSIG (SIG_MAX+1) 245# define EV_NSIG (SIG_MAX+1)
234#elif defined (_SIG_MAX) 246#elif defined _SIG_MAX
235# define EV_NSIG (_SIG_MAX+1) 247# define EV_NSIG (_SIG_MAX+1)
236#elif defined (MAXSIG) 248#elif defined MAXSIG
237# define EV_NSIG (MAXSIG+1) 249# define EV_NSIG (MAXSIG+1)
238#elif defined (MAX_SIG) 250#elif defined MAX_SIG
239# define EV_NSIG (MAX_SIG+1) 251# define EV_NSIG (MAX_SIG+1)
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
260# endif 269# endif
261#endif 270#endif
262 271
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
278# endif
279#endif
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
265# define EV_USE_MONOTONIC EV_FEATURE_OS 283# define EV_USE_MONOTONIC EV_FEATURE_OS
266# else 284# else
267# define EV_USE_MONOTONIC 0 285# define EV_USE_MONOTONIC 0
268# endif 286# endif
269#endif 287#endif
… …
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
… …
395# define EV_USE_INOTIFY 0 440# define EV_USE_INOTIFY 0
396#endif 441#endif
397 442
398#if !EV_USE_NANOSLEEP 443#if !EV_USE_NANOSLEEP
399/* hp-ux has it in sys/time.h, which we unconditionally include above */ 444/* hp-ux has it in sys/time.h, which we unconditionally include above */
400# if !defined(_WIN32) && !defined(__hpux) 445# if !defined _WIN32 && !defined __hpux
401# include <sys/select.h> 446# include <sys/select.h>
447# endif
448#endif
449
450#if EV_USE_LINUXAIO
451# include <sys/syscall.h>
452# if SYS_io_getevents && EV_USE_EPOLL /* linuxaio backend requires epoll backend */
453# define EV_NEED_SYSCALL 1
454# else
455# undef EV_USE_LINUXAIO
456# define EV_USE_LINUXAIO 0
457# endif
458#endif
459
460#if EV_USE_IOURING
461# include <sys/syscall.h>
462# if !SYS_io_uring_setup && __linux && !__alpha
463# define SYS_io_uring_setup 425
464# define SYS_io_uring_enter 426
465# define SYS_io_uring_wregister 427
466# endif
467# if SYS_io_uring_setup && EV_USE_EPOLL /* iouring backend requires epoll backend */
468# define EV_NEED_SYSCALL 1
469# else
470# undef EV_USE_IOURING
471# define EV_USE_IOURING 0
402# endif 472# endif
403#endif 473#endif
404 474
405#if EV_USE_INOTIFY 475#if EV_USE_INOTIFY
406# include <sys/statfs.h> 476# include <sys/statfs.h>
… …
408/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 478/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
409# ifndef IN_DONT_FOLLOW 479# ifndef IN_DONT_FOLLOW
410# undef EV_USE_INOTIFY 480# undef EV_USE_INOTIFY
411# define EV_USE_INOTIFY 0 481# define EV_USE_INOTIFY 0
412# endif 482# endif
413#endif
414
415#if EV_SELECT_IS_WINSOCKET
416# include <winsock.h>
417#endif 483#endif
418 484
419#if EV_USE_EVENTFD 485#if EV_USE_EVENTFD
420/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 486/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
421# include <stdint.h> 487# include <stdint.h>
… …
452 uint32_t ssi_signo; 518 uint32_t ssi_signo;
453 char pad[128 - sizeof (uint32_t)]; 519 char pad[128 - sizeof (uint32_t)];
454}; 520};
455#endif 521#endif
456 522
457/**/ 523/*****************************************************************************/
458 524
459#if EV_VERIFY >= 3 525#if EV_VERIFY >= 3
460# define EV_FREQUENT_CHECK ev_verify (EV_A) 526# define EV_FREQUENT_CHECK ev_verify (EV_A)
461#else 527#else
462# define EV_FREQUENT_CHECK do { } while (0) 528# define EV_FREQUENT_CHECK do { } while (0)
… …
467 * This value is good at least till the year 4000. 533 * This value is good at least till the year 4000.
468 */ 534 */
469#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */ 535#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
470/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */ 536/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
471 537
472#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 538#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
473#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 539#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
474 540
541/* find a portable timestamp that is "always" in the future but fits into time_t.
542 * this is quite hard, and we are mostly guessing - we handle 32 bit signed/unsigned time_t,
543 * and sizes larger than 32 bit, and maybe the unlikely floating point time_t */
544#define EV_TSTAMP_HUGE \
545 (sizeof (time_t) >= 8 ? 10000000000000. \
546 : 0 < (time_t)4294967295 ? 4294967295. \
547 : 2147483647.) \
548
549#define EV_TS_TO_MSEC(a) a * 1e3 + 0.9999
550#define EV_TS_FROM_USEC(us) us * 1e-6
475#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) 551#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) 552#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
553#define EV_TV_GET(tv) ((tv).tv_sec + (tv).tv_usec * 1e-6)
554#define EV_TS_GET(ts) ((ts).tv_sec + (ts).tv_nsec * 1e-9)
477 555
478/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ 556/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
479/* ECB.H BEGIN */ 557/* ECB.H BEGIN */
480/* 558/*
481 * libecb - http://software.schmorp.de/pkg/libecb 559 * libecb - http://software.schmorp.de/pkg/libecb
482 * 560 *
483 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de> 561 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
484 * Copyright (©) 2011 Emanuele Giaquinta 562 * Copyright (©) 2011 Emanuele Giaquinta
485 * All rights reserved. 563 * All rights reserved.
486 * 564 *
487 * Redistribution and use in source and binary forms, with or without modifica- 565 * Redistribution and use in source and binary forms, with or without modifica-
488 * tion, are permitted provided that the following conditions are met: 566 * tion, are permitted provided that the following conditions are met:
… …
502 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 580 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
503 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 581 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
504 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- 582 * 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 583 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
506 * OF THE POSSIBILITY OF SUCH DAMAGE. 584 * OF THE POSSIBILITY OF SUCH DAMAGE.
585 *
586 * Alternatively, the contents of this file may be used under the terms of
587 * the GNU General Public License ("GPL") version 2 or any later version,
588 * in which case the provisions of the GPL are applicable instead of
589 * the above. If you wish to allow the use of your version of this file
590 * only under the terms of the GPL and not to allow others to use your
591 * version of this file under the BSD license, indicate your decision
592 * by deleting the provisions above and replace them with the notice
593 * and other provisions required by the GPL. If you do not delete the
594 * provisions above, a recipient may use your version of this file under
595 * either the BSD or the GPL.
507 */ 596 */
508 597
509#ifndef ECB_H 598#ifndef ECB_H
510#define ECB_H 599#define ECB_H
600
601/* 16 bits major, 16 bits minor */
602#define ECB_VERSION 0x00010006
511 603
512#ifdef _WIN32 604#ifdef _WIN32
513 typedef signed char int8_t; 605 typedef signed char int8_t;
514 typedef unsigned char uint8_t; 606 typedef unsigned char uint8_t;
515 typedef signed short int16_t; 607 typedef signed short int16_t;
… …
521 typedef unsigned long long uint64_t; 613 typedef unsigned long long uint64_t;
522 #else /* _MSC_VER || __BORLANDC__ */ 614 #else /* _MSC_VER || __BORLANDC__ */
523 typedef signed __int64 int64_t; 615 typedef signed __int64 int64_t;
524 typedef unsigned __int64 uint64_t; 616 typedef unsigned __int64 uint64_t;
525 #endif 617 #endif
618 #ifdef _WIN64
619 #define ECB_PTRSIZE 8
620 typedef uint64_t uintptr_t;
621 typedef int64_t intptr_t;
622 #else
623 #define ECB_PTRSIZE 4
624 typedef uint32_t uintptr_t;
625 typedef int32_t intptr_t;
626 #endif
526#else 627#else
527 #include <inttypes.h> 628 #include <inttypes.h>
629 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
630 #define ECB_PTRSIZE 8
631 #else
632 #define ECB_PTRSIZE 4
633 #endif
634#endif
635
636#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
637#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
638
639/* work around x32 idiocy by defining proper macros */
640#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
641 #if _ILP32
642 #define ECB_AMD64_X32 1
643 #else
644 #define ECB_AMD64 1
645 #endif
528#endif 646#endif
529 647
530/* many compilers define _GNUC_ to some versions but then only implement 648/* many compilers define _GNUC_ to some versions but then only implement
531 * what their idiot authors think are the "more important" extensions, 649 * what their idiot authors think are the "more important" extensions,
532 * causing enormous grief in return for some better fake benchmark numbers. 650 * causing enormous grief in return for some better fake benchmark numbers.
533 * or so. 651 * or so.
534 * we try to detect these and simply assume they are not gcc - if they have 652 * 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. 653 * an issue with that they should have done it right in the first place.
536 */ 654 */
537#ifndef ECB_GCC_VERSION
538 #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__) 655#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
539 #define ECB_GCC_VERSION(major,minor) 0 656 #define ECB_GCC_VERSION(major,minor) 0
540 #else 657#else
541 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) 658 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
542 #endif 659#endif
660
661#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
662
663#if __clang__ && defined __has_builtin
664 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
665#else
666 #define ECB_CLANG_BUILTIN(x) 0
667#endif
668
669#if __clang__ && defined __has_extension
670 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
671#else
672 #define ECB_CLANG_EXTENSION(x) 0
673#endif
674
675#define ECB_CPP (__cplusplus+0)
676#define ECB_CPP11 (__cplusplus >= 201103L)
677#define ECB_CPP14 (__cplusplus >= 201402L)
678#define ECB_CPP17 (__cplusplus >= 201703L)
679
680#if ECB_CPP
681 #define ECB_C 0
682 #define ECB_STDC_VERSION 0
683#else
684 #define ECB_C 1
685 #define ECB_STDC_VERSION __STDC_VERSION__
686#endif
687
688#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
689#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
690#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
691
692#if ECB_CPP
693 #define ECB_EXTERN_C extern "C"
694 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
695 #define ECB_EXTERN_C_END }
696#else
697 #define ECB_EXTERN_C extern
698 #define ECB_EXTERN_C_BEG
699 #define ECB_EXTERN_C_END
543#endif 700#endif
544 701
545/*****************************************************************************/ 702/*****************************************************************************/
546 703
547/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ 704/* 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 */ 705/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
549 706
550#if ECB_NO_THREADS 707#if ECB_NO_THREADS
551# define ECB_NO_SMP 1 708 #define ECB_NO_SMP 1
552#endif 709#endif
553 710
554#if ECB_NO_THREADS || ECB_NO_SMP 711#if ECB_NO_SMP
555 #define ECB_MEMORY_FENCE do { } while (0) 712 #define ECB_MEMORY_FENCE do { } while (0)
556#endif 713#endif
557 714
715/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
716#if __xlC__ && ECB_CPP
717 #include <builtins.h>
718#endif
719
720#if 1400 <= _MSC_VER
721 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
722#endif
723
558#ifndef ECB_MEMORY_FENCE 724#ifndef ECB_MEMORY_FENCE
559 #if ECB_GCC_VERSION(2,5) || defined(__INTEL_COMPILER) || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 725 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
726 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
560 #if __i386 || __i386__ 727 #if __i386 || __i386__
561 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") 728 #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 */ 729 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
563 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */ 730 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
564 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__ 731 #elif ECB_GCC_AMD64
565 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 732 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
566 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory") 733 #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 */ 734 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
568 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 735 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
569 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 736 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
737 #elif defined __ARM_ARCH_2__ \
738 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
739 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
740 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
741 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
742 || defined __ARM_ARCH_5TEJ__
743 /* 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__ ) \ 744 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
571 || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6ZK__) 745 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
746 || defined __ARM_ARCH_6T2__
572 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") 747 #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__ ) \ 748 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
574 || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7R__ ) 749 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
575 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") 750 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
576 #elif __sparc || __sparc__ 751 #elif __aarch64__
752 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
753 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
577 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad | " : : : "memory") 754 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
578 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") 755 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
579 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") 756 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
580 #elif defined(__s390__) || defined(__s390x__) 757 #elif defined __s390__ || defined __s390x__
581 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") 758 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
582 #elif defined(__mips__) 759 #elif defined __mips__
760 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
761 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
762 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
763 #elif defined __alpha__
583 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 764 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
765 #elif defined __hppa__
766 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
767 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
768 #elif defined __ia64__
769 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
770 #elif defined __m68k__
771 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
772 #elif defined __m88k__
773 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
774 #elif defined __sh__
775 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
584 #endif 776 #endif
585 #endif 777 #endif
586#endif 778#endif
587 779
588#ifndef ECB_MEMORY_FENCE 780#ifndef ECB_MEMORY_FENCE
781 #if ECB_GCC_VERSION(4,7)
782 /* see comment below (stdatomic.h) about the C11 memory model. */
783 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
784 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
785 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
786 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
787
788 #elif ECB_CLANG_EXTENSION(c_atomic)
789 /* see comment below (stdatomic.h) about the C11 memory model. */
790 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
791 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
792 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
793 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
794
589 #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER) || defined(__clang__) 795 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
590 #define ECB_MEMORY_FENCE __sync_synchronize () 796 #define ECB_MEMORY_FENCE __sync_synchronize ()
591 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */ 797 #elif _MSC_VER >= 1500 /* VC++ 2008 */
592 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */ 798 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
799 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
800 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
801 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
802 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
593 #elif _MSC_VER >= 1400 /* VC++ 2005 */ 803 #elif _MSC_VER >= 1400 /* VC++ 2005 */
594 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) 804 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
595 #define ECB_MEMORY_FENCE _ReadWriteBarrier () 805 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
596 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ 806 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
597 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () 807 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
598 #elif defined(_WIN32) 808 #elif defined _WIN32
599 #include <WinNT.h> 809 #include <WinNT.h>
600 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ 810 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
601 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 811 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
602 #include <mbarrier.h> 812 #include <mbarrier.h>
603 #define ECB_MEMORY_FENCE __machine_rw_barrier () 813 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
604 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier () 814 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
605 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier () 815 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
816 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
606 #elif __xlC__ 817 #elif __xlC__
607 #define ECB_MEMORY_FENCE __lwsync () 818 #define ECB_MEMORY_FENCE __sync ()
819 #endif
820#endif
821
822#ifndef ECB_MEMORY_FENCE
823 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
824 /* we assume that these memory fences work on all variables/all memory accesses, */
825 /* not just C11 atomics and atomic accesses */
826 #include <stdatomic.h>
827 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
828 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
829 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
608 #endif 830 #endif
609#endif 831#endif
610 832
611#ifndef ECB_MEMORY_FENCE 833#ifndef ECB_MEMORY_FENCE
612 #if !ECB_AVOID_PTHREADS 834 #if !ECB_AVOID_PTHREADS
… …
624 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER; 846 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
625 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0) 847 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
626 #endif 848 #endif
627#endif 849#endif
628 850
629#if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE) 851#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
630 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 852 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
631#endif 853#endif
632 854
633#if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE) 855#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
634 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 856 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
635#endif 857#endif
636 858
859#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
860 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
861#endif
862
637/*****************************************************************************/ 863/*****************************************************************************/
638 864
639#define ECB_C99 (__STDC_VERSION__ >= 199901L) 865#if ECB_CPP
640
641#if __cplusplus
642 #define ecb_inline static inline 866 #define ecb_inline static inline
643#elif ECB_GCC_VERSION(2,5) 867#elif ECB_GCC_VERSION(2,5)
644 #define ecb_inline static __inline__ 868 #define ecb_inline static __inline__
645#elif ECB_C99 869#elif ECB_C99
646 #define ecb_inline static inline 870 #define ecb_inline static inline
… …
660 884
661#define ECB_CONCAT_(a, b) a ## b 885#define ECB_CONCAT_(a, b) a ## b
662#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) 886#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
663#define ECB_STRINGIFY_(a) # a 887#define ECB_STRINGIFY_(a) # a
664#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) 888#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
889#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
665 890
666#define ecb_function_ ecb_inline 891#define ecb_function_ ecb_inline
667 892
668#if ECB_GCC_VERSION(3,1) 893#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
669 #define ecb_attribute(attrlist) __attribute__(attrlist) 894 #define ecb_attribute(attrlist) __attribute__ (attrlist)
895#else
896 #define ecb_attribute(attrlist)
897#endif
898
899#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
670 #define ecb_is_constant(expr) __builtin_constant_p (expr) 900 #define ecb_is_constant(expr) __builtin_constant_p (expr)
901#else
902 /* possible C11 impl for integral types
903 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
904 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
905
906 #define ecb_is_constant(expr) 0
907#endif
908
909#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
671 #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) 910 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
911#else
912 #define ecb_expect(expr,value) (expr)
913#endif
914
915#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
672 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) 916 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
673#else 917#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) 918 #define ecb_prefetch(addr,rw,locality)
678#endif 919#endif
679 920
680/* no emulation for ecb_decltype */ 921/* no emulation for ecb_decltype */
681#if ECB_GCC_VERSION(4,5) 922#if ECB_CPP11
923 // older implementations might have problems with decltype(x)::type, work around it
924 template<class T> struct ecb_decltype_t { typedef T type; };
682 #define ecb_decltype(x) __decltype(x) 925 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
683#elif ECB_GCC_VERSION(3,0) 926#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
684 #define ecb_decltype(x) __typeof(x) 927 #define ecb_decltype(x) __typeof__ (x)
685#endif 928#endif
686 929
930#if _MSC_VER >= 1300
931 #define ecb_deprecated __declspec (deprecated)
932#else
933 #define ecb_deprecated ecb_attribute ((__deprecated__))
934#endif
935
936#if _MSC_VER >= 1500
937 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
938#elif ECB_GCC_VERSION(4,5)
939 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
940#else
941 #define ecb_deprecated_message(msg) ecb_deprecated
942#endif
943
944#if _MSC_VER >= 1400
945 #define ecb_noinline __declspec (noinline)
946#else
687#define ecb_noinline ecb_attribute ((__noinline__)) 947 #define ecb_noinline ecb_attribute ((__noinline__))
688#define ecb_noreturn ecb_attribute ((__noreturn__)) 948#endif
949
689#define ecb_unused ecb_attribute ((__unused__)) 950#define ecb_unused ecb_attribute ((__unused__))
690#define ecb_const ecb_attribute ((__const__)) 951#define ecb_const ecb_attribute ((__const__))
691#define ecb_pure ecb_attribute ((__pure__)) 952#define ecb_pure ecb_attribute ((__pure__))
953
954#if ECB_C11 || __IBMC_NORETURN
955 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
956 #define ecb_noreturn _Noreturn
957#elif ECB_CPP11
958 #define ecb_noreturn [[noreturn]]
959#elif _MSC_VER >= 1200
960 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
961 #define ecb_noreturn __declspec (noreturn)
962#else
963 #define ecb_noreturn ecb_attribute ((__noreturn__))
964#endif
692 965
693#if ECB_GCC_VERSION(4,3) 966#if ECB_GCC_VERSION(4,3)
694 #define ecb_artificial ecb_attribute ((__artificial__)) 967 #define ecb_artificial ecb_attribute ((__artificial__))
695 #define ecb_hot ecb_attribute ((__hot__)) 968 #define ecb_hot ecb_attribute ((__hot__))
696 #define ecb_cold ecb_attribute ((__cold__)) 969 #define ecb_cold ecb_attribute ((__cold__))
… …
708/* for compatibility to the rest of the world */ 981/* for compatibility to the rest of the world */
709#define ecb_likely(expr) ecb_expect_true (expr) 982#define ecb_likely(expr) ecb_expect_true (expr)
710#define ecb_unlikely(expr) ecb_expect_false (expr) 983#define ecb_unlikely(expr) ecb_expect_false (expr)
711 984
712/* count trailing zero bits and count # of one bits */ 985/* count trailing zero bits and count # of one bits */
713#if ECB_GCC_VERSION(3,4) 986#if ECB_GCC_VERSION(3,4) \
987 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
988 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
989 && ECB_CLANG_BUILTIN(__builtin_popcount))
714 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */ 990 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
715 #define ecb_ld32(x) (__builtin_clz (x) ^ 31) 991 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
716 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) 992 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
717 #define ecb_ctz32(x) __builtin_ctz (x) 993 #define ecb_ctz32(x) __builtin_ctz (x)
718 #define ecb_ctz64(x) __builtin_ctzll (x) 994 #define ecb_ctz64(x) __builtin_ctzll (x)
719 #define ecb_popcount32(x) __builtin_popcount (x) 995 #define ecb_popcount32(x) __builtin_popcount (x)
720 /* no popcountll */ 996 /* no popcountll */
721#else 997#else
722 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; 998 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
723 ecb_function_ int 999 ecb_function_ ecb_const int
724 ecb_ctz32 (uint32_t x) 1000 ecb_ctz32 (uint32_t x)
725 { 1001 {
1002#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1003 unsigned long r;
1004 _BitScanForward (&r, x);
1005 return (int)r;
1006#else
726 int r = 0; 1007 int r = 0;
727 1008
728 x &= ~x + 1; /* this isolates the lowest bit */ 1009 x &= ~x + 1; /* this isolates the lowest bit */
729 1010
730#if ECB_branchless_on_i386 1011#if ECB_branchless_on_i386
… …
740 if (x & 0xff00ff00) r += 8; 1021 if (x & 0xff00ff00) r += 8;
741 if (x & 0xffff0000) r += 16; 1022 if (x & 0xffff0000) r += 16;
742#endif 1023#endif
743 1024
744 return r; 1025 return r;
1026#endif
745 } 1027 }
746 1028
747 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; 1029 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
748 ecb_function_ int 1030 ecb_function_ ecb_const int
749 ecb_ctz64 (uint64_t x) 1031 ecb_ctz64 (uint64_t x)
750 { 1032 {
1033#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1034 unsigned long r;
1035 _BitScanForward64 (&r, x);
1036 return (int)r;
1037#else
751 int shift = x & 0xffffffffU ? 0 : 32; 1038 int shift = x & 0xffffffff ? 0 : 32;
752 return ecb_ctz32 (x >> shift) + shift; 1039 return ecb_ctz32 (x >> shift) + shift;
1040#endif
753 } 1041 }
754 1042
755 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; 1043 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
756 ecb_function_ int 1044 ecb_function_ ecb_const int
757 ecb_popcount32 (uint32_t x) 1045 ecb_popcount32 (uint32_t x)
758 { 1046 {
759 x -= (x >> 1) & 0x55555555; 1047 x -= (x >> 1) & 0x55555555;
760 x = ((x >> 2) & 0x33333333) + (x & 0x33333333); 1048 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
761 x = ((x >> 4) + x) & 0x0f0f0f0f; 1049 x = ((x >> 4) + x) & 0x0f0f0f0f;
762 x *= 0x01010101; 1050 x *= 0x01010101;
763 1051
764 return x >> 24; 1052 return x >> 24;
765 } 1053 }
766 1054
767 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; 1055 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
768 ecb_function_ int ecb_ld32 (uint32_t x) 1056 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
769 { 1057 {
1058#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1059 unsigned long r;
1060 _BitScanReverse (&r, x);
1061 return (int)r;
1062#else
770 int r = 0; 1063 int r = 0;
771 1064
772 if (x >> 16) { x >>= 16; r += 16; } 1065 if (x >> 16) { x >>= 16; r += 16; }
773 if (x >> 8) { x >>= 8; r += 8; } 1066 if (x >> 8) { x >>= 8; r += 8; }
774 if (x >> 4) { x >>= 4; r += 4; } 1067 if (x >> 4) { x >>= 4; r += 4; }
775 if (x >> 2) { x >>= 2; r += 2; } 1068 if (x >> 2) { x >>= 2; r += 2; }
776 if (x >> 1) { r += 1; } 1069 if (x >> 1) { r += 1; }
777 1070
778 return r; 1071 return r;
1072#endif
779 } 1073 }
780 1074
781 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; 1075 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
782 ecb_function_ int ecb_ld64 (uint64_t x) 1076 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
783 { 1077 {
1078#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1079 unsigned long r;
1080 _BitScanReverse64 (&r, x);
1081 return (int)r;
1082#else
784 int r = 0; 1083 int r = 0;
785 1084
786 if (x >> 32) { x >>= 32; r += 32; } 1085 if (x >> 32) { x >>= 32; r += 32; }
787 1086
788 return r + ecb_ld32 (x); 1087 return r + ecb_ld32 (x);
1088#endif
789 } 1089 }
790#endif 1090#endif
791 1091
1092ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1093ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1094ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1095ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1096
792ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const; 1097ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
793ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) 1098ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
794{ 1099{
795 return ( (x * 0x0802U & 0x22110U) 1100 return ( (x * 0x0802U & 0x22110U)
796 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; 1101 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
797} 1102}
798 1103
799ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const; 1104ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
800ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) 1105ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
801{ 1106{
802 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1); 1107 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
803 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2); 1108 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
804 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4); 1109 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
805 x = ( x >> 8 ) | ( x << 8); 1110 x = ( x >> 8 ) | ( x << 8);
806 1111
807 return x; 1112 return x;
808} 1113}
809 1114
810ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const; 1115ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
811ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) 1116ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
812{ 1117{
813 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1); 1118 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
814 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2); 1119 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
815 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4); 1120 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
816 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8); 1121 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
… …
819 return x; 1124 return x;
820} 1125}
821 1126
822/* popcount64 is only available on 64 bit cpus as gcc builtin */ 1127/* popcount64 is only available on 64 bit cpus as gcc builtin */
823/* so for this version we are lazy */ 1128/* so for this version we are lazy */
824ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 1129ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
825ecb_function_ int 1130ecb_function_ ecb_const int
826ecb_popcount64 (uint64_t x) 1131ecb_popcount64 (uint64_t x)
827{ 1132{
828 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); 1133 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
829} 1134}
830 1135
831ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const; 1136ecb_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; 1137ecb_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; 1138ecb_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; 1139ecb_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; 1140ecb_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; 1141ecb_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; 1142ecb_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; 1143ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
839 1144
840ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); } 1145ecb_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); } 1146ecb_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); } 1147ecb_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); } 1148ecb_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); } 1149ecb_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); } 1150ecb_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); } 1151ecb_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); } 1152ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
848 1153
849#if ECB_GCC_VERSION(4,3) 1154#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1155 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1156 #define ecb_bswap16(x) __builtin_bswap16 (x)
1157 #else
850 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 1158 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1159 #endif
851 #define ecb_bswap32(x) __builtin_bswap32 (x) 1160 #define ecb_bswap32(x) __builtin_bswap32 (x)
852 #define ecb_bswap64(x) __builtin_bswap64 (x) 1161 #define ecb_bswap64(x) __builtin_bswap64 (x)
1162#elif _MSC_VER
1163 #include <stdlib.h>
1164 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1165 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1166 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
853#else 1167#else
854 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; 1168 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
855 ecb_function_ uint16_t 1169 ecb_function_ ecb_const uint16_t
856 ecb_bswap16 (uint16_t x) 1170 ecb_bswap16 (uint16_t x)
857 { 1171 {
858 return ecb_rotl16 (x, 8); 1172 return ecb_rotl16 (x, 8);
859 } 1173 }
860 1174
861 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; 1175 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
862 ecb_function_ uint32_t 1176 ecb_function_ ecb_const uint32_t
863 ecb_bswap32 (uint32_t x) 1177 ecb_bswap32 (uint32_t x)
864 { 1178 {
865 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); 1179 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
866 } 1180 }
867 1181
868 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; 1182 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
869 ecb_function_ uint64_t 1183 ecb_function_ ecb_const uint64_t
870 ecb_bswap64 (uint64_t x) 1184 ecb_bswap64 (uint64_t x)
871 { 1185 {
872 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); 1186 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
873 } 1187 }
874#endif 1188#endif
875 1189
876#if ECB_GCC_VERSION(4,5) 1190#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
877 #define ecb_unreachable() __builtin_unreachable () 1191 #define ecb_unreachable() __builtin_unreachable ()
878#else 1192#else
879 /* this seems to work fine, but gcc always emits a warning for it :/ */ 1193 /* this seems to work fine, but gcc always emits a warning for it :/ */
880 ecb_inline void ecb_unreachable (void) ecb_noreturn; 1194 ecb_inline ecb_noreturn void ecb_unreachable (void);
881 ecb_inline void ecb_unreachable (void) { } 1195 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
882#endif 1196#endif
883 1197
884/* try to tell the compiler that some condition is definitely true */ 1198/* try to tell the compiler that some condition is definitely true */
885#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) 1199#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
886 1200
887ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const; 1201ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
888ecb_inline unsigned char 1202ecb_inline ecb_const uint32_t
889ecb_byteorder_helper (void) 1203ecb_byteorder_helper (void)
890{ 1204{
891 const uint32_t u = 0x11223344; 1205 /* the union code still generates code under pressure in gcc, */
892 return *(unsigned char *)&u; 1206 /* but less than using pointers, and always seems to */
1207 /* successfully return a constant. */
1208 /* the reason why we have this horrible preprocessor mess */
1209 /* is to avoid it in all cases, at least on common architectures */
1210 /* or when using a recent enough gcc version (>= 4.6) */
1211#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1212 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1213 #define ECB_LITTLE_ENDIAN 1
1214 return 0x44332211;
1215#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1216 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1217 #define ECB_BIG_ENDIAN 1
1218 return 0x11223344;
1219#else
1220 union
1221 {
1222 uint8_t c[4];
1223 uint32_t u;
1224 } u = { 0x11, 0x22, 0x33, 0x44 };
1225 return u.u;
1226#endif
893} 1227}
894 1228
895ecb_inline ecb_bool ecb_big_endian (void) ecb_const; 1229ecb_inline ecb_const ecb_bool ecb_big_endian (void);
896ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } 1230ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
897ecb_inline ecb_bool ecb_little_endian (void) ecb_const; 1231ecb_inline ecb_const ecb_bool ecb_little_endian (void);
898ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } 1232ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
899 1233
900#if ECB_GCC_VERSION(3,0) || ECB_C99 1234#if ECB_GCC_VERSION(3,0) || ECB_C99
901 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) 1235 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
902#else 1236#else
903 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) 1237 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
904#endif 1238#endif
905 1239
906#if __cplusplus 1240#if ECB_CPP
907 template<typename T> 1241 template<typename T>
908 static inline T ecb_div_rd (T val, T div) 1242 static inline T ecb_div_rd (T val, T div)
909 { 1243 {
910 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; 1244 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
911 } 1245 }
… …
928 } 1262 }
929#else 1263#else
930 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1264 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
931#endif 1265#endif
932 1266
1267ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1268ecb_function_ ecb_const uint32_t
1269ecb_binary16_to_binary32 (uint32_t x)
1270{
1271 unsigned int s = (x & 0x8000) << (31 - 15);
1272 int e = (x >> 10) & 0x001f;
1273 unsigned int m = x & 0x03ff;
1274
1275 if (ecb_expect_false (e == 31))
1276 /* infinity or NaN */
1277 e = 255 - (127 - 15);
1278 else if (ecb_expect_false (!e))
1279 {
1280 if (ecb_expect_true (!m))
1281 /* zero, handled by code below by forcing e to 0 */
1282 e = 0 - (127 - 15);
1283 else
1284 {
1285 /* subnormal, renormalise */
1286 unsigned int s = 10 - ecb_ld32 (m);
1287
1288 m = (m << s) & 0x3ff; /* mask implicit bit */
1289 e -= s - 1;
1290 }
1291 }
1292
1293 /* e and m now are normalised, or zero, (or inf or nan) */
1294 e += 127 - 15;
1295
1296 return s | (e << 23) | (m << (23 - 10));
1297}
1298
1299ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1300ecb_function_ ecb_const uint16_t
1301ecb_binary32_to_binary16 (uint32_t x)
1302{
1303 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1304 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1305 unsigned int m = x & 0x007fffff;
1306
1307 x &= 0x7fffffff;
1308
1309 /* if it's within range of binary16 normals, use fast path */
1310 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1311 {
1312 /* mantissa round-to-even */
1313 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1314
1315 /* handle overflow */
1316 if (ecb_expect_false (m >= 0x00800000))
1317 {
1318 m >>= 1;
1319 e += 1;
1320 }
1321
1322 return s | (e << 10) | (m >> (23 - 10));
1323 }
1324
1325 /* handle large numbers and infinity */
1326 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1327 return s | 0x7c00;
1328
1329 /* handle zero, subnormals and small numbers */
1330 if (ecb_expect_true (x < 0x38800000))
1331 {
1332 /* zero */
1333 if (ecb_expect_true (!x))
1334 return s;
1335
1336 /* handle subnormals */
1337
1338 /* too small, will be zero */
1339 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1340 return s;
1341
1342 m |= 0x00800000; /* make implicit bit explicit */
1343
1344 /* very tricky - we need to round to the nearest e (+10) bit value */
1345 {
1346 unsigned int bits = 14 - e;
1347 unsigned int half = (1 << (bits - 1)) - 1;
1348 unsigned int even = (m >> bits) & 1;
1349
1350 /* if this overflows, we will end up with a normalised number */
1351 m = (m + half + even) >> bits;
1352 }
1353
1354 return s | m;
1355 }
1356
1357 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1358 m >>= 13;
1359
1360 return s | 0x7c00 | m | !m;
1361}
1362
1363/*******************************************************************************/
1364/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1365
1366/* basically, everything uses "ieee pure-endian" floating point numbers */
1367/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1368#if 0 \
1369 || __i386 || __i386__ \
1370 || ECB_GCC_AMD64 \
1371 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1372 || defined __s390__ || defined __s390x__ \
1373 || defined __mips__ \
1374 || defined __alpha__ \
1375 || defined __hppa__ \
1376 || defined __ia64__ \
1377 || defined __m68k__ \
1378 || defined __m88k__ \
1379 || defined __sh__ \
1380 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1381 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1382 || defined __aarch64__
1383 #define ECB_STDFP 1
1384 #include <string.h> /* for memcpy */
1385#else
1386 #define ECB_STDFP 0
1387#endif
1388
1389#ifndef ECB_NO_LIBM
1390
1391 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1392
1393 /* only the oldest of old doesn't have this one. solaris. */
1394 #ifdef INFINITY
1395 #define ECB_INFINITY INFINITY
1396 #else
1397 #define ECB_INFINITY HUGE_VAL
1398 #endif
1399
1400 #ifdef NAN
1401 #define ECB_NAN NAN
1402 #else
1403 #define ECB_NAN ECB_INFINITY
1404 #endif
1405
1406 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1407 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1408 #define ecb_frexpf(x,e) frexpf ((x), (e))
1409 #else
1410 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1411 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1412 #endif
1413
1414 /* convert a float to ieee single/binary32 */
1415 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1416 ecb_function_ ecb_const uint32_t
1417 ecb_float_to_binary32 (float x)
1418 {
1419 uint32_t r;
1420
1421 #if ECB_STDFP
1422 memcpy (&r, &x, 4);
1423 #else
1424 /* slow emulation, works for anything but -0 */
1425 uint32_t m;
1426 int e;
1427
1428 if (x == 0e0f ) return 0x00000000U;
1429 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1430 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1431 if (x != x ) return 0x7fbfffffU;
1432
1433 m = ecb_frexpf (x, &e) * 0x1000000U;
1434
1435 r = m & 0x80000000U;
1436
1437 if (r)
1438 m = -m;
1439
1440 if (e <= -126)
1441 {
1442 m &= 0xffffffU;
1443 m >>= (-125 - e);
1444 e = -126;
1445 }
1446
1447 r |= (e + 126) << 23;
1448 r |= m & 0x7fffffU;
1449 #endif
1450
1451 return r;
1452 }
1453
1454 /* converts an ieee single/binary32 to a float */
1455 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1456 ecb_function_ ecb_const float
1457 ecb_binary32_to_float (uint32_t x)
1458 {
1459 float r;
1460
1461 #if ECB_STDFP
1462 memcpy (&r, &x, 4);
1463 #else
1464 /* emulation, only works for normals and subnormals and +0 */
1465 int neg = x >> 31;
1466 int e = (x >> 23) & 0xffU;
1467
1468 x &= 0x7fffffU;
1469
1470 if (e)
1471 x |= 0x800000U;
1472 else
1473 e = 1;
1474
1475 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1476 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1477
1478 r = neg ? -r : r;
1479 #endif
1480
1481 return r;
1482 }
1483
1484 /* convert a double to ieee double/binary64 */
1485 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1486 ecb_function_ ecb_const uint64_t
1487 ecb_double_to_binary64 (double x)
1488 {
1489 uint64_t r;
1490
1491 #if ECB_STDFP
1492 memcpy (&r, &x, 8);
1493 #else
1494 /* slow emulation, works for anything but -0 */
1495 uint64_t m;
1496 int e;
1497
1498 if (x == 0e0 ) return 0x0000000000000000U;
1499 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1500 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1501 if (x != x ) return 0X7ff7ffffffffffffU;
1502
1503 m = frexp (x, &e) * 0x20000000000000U;
1504
1505 r = m & 0x8000000000000000;;
1506
1507 if (r)
1508 m = -m;
1509
1510 if (e <= -1022)
1511 {
1512 m &= 0x1fffffffffffffU;
1513 m >>= (-1021 - e);
1514 e = -1022;
1515 }
1516
1517 r |= ((uint64_t)(e + 1022)) << 52;
1518 r |= m & 0xfffffffffffffU;
1519 #endif
1520
1521 return r;
1522 }
1523
1524 /* converts an ieee double/binary64 to a double */
1525 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1526 ecb_function_ ecb_const double
1527 ecb_binary64_to_double (uint64_t x)
1528 {
1529 double r;
1530
1531 #if ECB_STDFP
1532 memcpy (&r, &x, 8);
1533 #else
1534 /* emulation, only works for normals and subnormals and +0 */
1535 int neg = x >> 63;
1536 int e = (x >> 52) & 0x7ffU;
1537
1538 x &= 0xfffffffffffffU;
1539
1540 if (e)
1541 x |= 0x10000000000000U;
1542 else
1543 e = 1;
1544
1545 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1546 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1547
1548 r = neg ? -r : r;
1549 #endif
1550
1551 return r;
1552 }
1553
1554 /* convert a float to ieee half/binary16 */
1555 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1556 ecb_function_ ecb_const uint16_t
1557 ecb_float_to_binary16 (float x)
1558 {
1559 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1560 }
1561
1562 /* convert an ieee half/binary16 to float */
1563 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1564 ecb_function_ ecb_const float
1565 ecb_binary16_to_float (uint16_t x)
1566 {
1567 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1568 }
1569
1570#endif
1571
933#endif 1572#endif
934 1573
935/* ECB.H END */ 1574/* ECB.H END */
936 1575
937#if ECB_MEMORY_FENCE_NEEDS_PTHREADS 1576#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
938/* if your architecture doesn't need memory fences, e.g. because it is 1577/* 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 1578 * 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 1579 * from multiple threads, then you can define ECB_NO_THREADS when compiling
941 * libev, in which cases the memory fences become nops. 1580 * libev, in which cases the memory fences become nops.
942 * alternatively, you can remove this #error and link against libpthread, 1581 * alternatively, you can remove this #error and link against libpthread,
943 * which will then provide the memory fences. 1582 * which will then provide the memory fences.
944 */ 1583 */
945# error "memory fences not defined for your architecture, please report" 1584# error "memory fences not defined for your architecture, please report"
… …
949# define ECB_MEMORY_FENCE do { } while (0) 1588# define ECB_MEMORY_FENCE do { } while (0)
950# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 1589# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
951# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 1590# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
952#endif 1591#endif
953 1592
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 1593#define inline_size ecb_inline
959 1594
960#if EV_FEATURE_CODE 1595#if EV_FEATURE_CODE
961# define inline_speed ecb_inline 1596# define inline_speed ecb_inline
962#else 1597#else
963# define inline_speed static noinline 1598# define inline_speed ecb_noinline static
964#endif 1599#endif
1600
1601/*****************************************************************************/
1602/* raw syscall wrappers */
1603
1604#if EV_NEED_SYSCALL
1605
1606#include <sys/syscall.h>
1607
1608/*
1609 * define some syscall wrappers for common architectures
1610 * this is mostly for nice looks during debugging, not performance.
1611 * our syscalls return < 0, not == -1, on error. which is good
1612 * enough for linux aio.
1613 * TODO: arm is also common nowadays, maybe even mips and x86
1614 * TODO: after implementing this, it suddenly looks like overkill, but its hard to remove...
1615 */
1616#if __GNUC__ && __linux && ECB_AMD64 && !defined __OPTIMIZE_SIZE__
1617 /* the costly errno access probably kills this for size optimisation */
1618
1619 #define ev_syscall(nr,narg,arg1,arg2,arg3,arg4,arg5,arg6) \
1620 ({ \
1621 long res; \
1622 register unsigned long r6 __asm__ ("r9" ); \
1623 register unsigned long r5 __asm__ ("r8" ); \
1624 register unsigned long r4 __asm__ ("r10"); \
1625 register unsigned long r3 __asm__ ("rdx"); \
1626 register unsigned long r2 __asm__ ("rsi"); \
1627 register unsigned long r1 __asm__ ("rdi"); \
1628 if (narg >= 6) r6 = (unsigned long)(arg6); \
1629 if (narg >= 5) r5 = (unsigned long)(arg5); \
1630 if (narg >= 4) r4 = (unsigned long)(arg4); \
1631 if (narg >= 3) r3 = (unsigned long)(arg3); \
1632 if (narg >= 2) r2 = (unsigned long)(arg2); \
1633 if (narg >= 1) r1 = (unsigned long)(arg1); \
1634 __asm__ __volatile__ ( \
1635 "syscall\n\t" \
1636 : "=a" (res) \
1637 : "0" (nr), "r" (r1), "r" (r2), "r" (r3), "r" (r4), "r" (r5) \
1638 : "cc", "r11", "cx", "memory"); \
1639 errno = -res; \
1640 res; \
1641 })
1642
1643#endif
1644
1645#ifdef ev_syscall
1646 #define ev_syscall0(nr) ev_syscall (nr, 0, 0, 0, 0, 0, 0, 0)
1647 #define ev_syscall1(nr,arg1) ev_syscall (nr, 1, arg1, 0, 0, 0, 0, 0)
1648 #define ev_syscall2(nr,arg1,arg2) ev_syscall (nr, 2, arg1, arg2, 0, 0, 0, 0)
1649 #define ev_syscall3(nr,arg1,arg2,arg3) ev_syscall (nr, 3, arg1, arg2, arg3, 0, 0, 0)
1650 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) ev_syscall (nr, 3, arg1, arg2, arg3, arg4, 0, 0)
1651 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) ev_syscall (nr, 5, arg1, arg2, arg3, arg4, arg5, 0)
1652 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) ev_syscall (nr, 6, arg1, arg2, arg3, arg4, arg5,arg6)
1653#else
1654 #define ev_syscall0(nr) syscall (nr)
1655 #define ev_syscall1(nr,arg1) syscall (nr, arg1)
1656 #define ev_syscall2(nr,arg1,arg2) syscall (nr, arg1, arg2)
1657 #define ev_syscall3(nr,arg1,arg2,arg3) syscall (nr, arg1, arg2, arg3)
1658 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) syscall (nr, arg1, arg2, arg3, arg4)
1659 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) syscall (nr, arg1, arg2, arg3, arg4, arg5)
1660 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) syscall (nr, arg1, arg2, arg3, arg4, arg5,arg6)
1661#endif
1662
1663#endif
1664
1665/*****************************************************************************/
965 1666
966#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1667#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
967 1668
968#if EV_MINPRI == EV_MAXPRI 1669#if EV_MINPRI == EV_MAXPRI
969# define ABSPRI(w) (((W)w), 0) 1670# define ABSPRI(w) (((W)w), 0)
970#else 1671#else
971# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1672# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
972#endif 1673#endif
973 1674
974#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1675#define EMPTY /* required for microsofts broken pseudo-c compiler */
975#define EMPTY2(a,b) /* used to suppress some warnings */
976 1676
977typedef ev_watcher *W; 1677typedef ev_watcher *W;
978typedef ev_watcher_list *WL; 1678typedef ev_watcher_list *WL;
979typedef ev_watcher_time *WT; 1679typedef ev_watcher_time *WT;
980 1680
… …
1005# include "ev_win32.c" 1705# include "ev_win32.c"
1006#endif 1706#endif
1007 1707
1008/*****************************************************************************/ 1708/*****************************************************************************/
1009 1709
1710#if EV_USE_LINUXAIO
1711# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1712#endif
1713
1010/* define a suitable floor function (only used by periodics atm) */ 1714/* define a suitable floor function (only used by periodics atm) */
1011 1715
1012#if EV_USE_FLOOR 1716#if EV_USE_FLOOR
1013# include <math.h> 1717# include <math.h>
1014# define ev_floor(v) floor (v) 1718# define ev_floor(v) floor (v)
1015#else 1719#else
1016 1720
1017#include <float.h> 1721#include <float.h>
1018 1722
1019/* a floor() replacement function, should be independent of ev_tstamp type */ 1723/* a floor() replacement function, should be independent of ev_tstamp type */
1724ecb_noinline
1020static ev_tstamp noinline 1725static ev_tstamp
1021ev_floor (ev_tstamp v) 1726ev_floor (ev_tstamp v)
1022{ 1727{
1023 /* the choice of shift factor is not terribly important */ 1728 /* the choice of shift factor is not terribly important */
1024#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1729#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1025 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1730 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1026#else 1731#else
1027 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; 1732 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1028#endif 1733#endif
1029 1734
1735 /* special treatment for negative arguments */
1736 if (ecb_expect_false (v < 0.))
1737 {
1738 ev_tstamp f = -ev_floor (-v);
1739
1740 return f - (f == v ? 0 : 1);
1741 }
1742
1030 /* argument too large for an unsigned long? */ 1743 /* argument too large for an unsigned long? then reduce it */
1031 if (expect_false (v >= shift)) 1744 if (ecb_expect_false (v >= shift))
1032 { 1745 {
1033 ev_tstamp f; 1746 ev_tstamp f;
1034 1747
1035 if (v == v - 1.) 1748 if (v == v - 1.)
1036 return v; /* very large number */ 1749 return v; /* very large numbers are assumed to be integer */
1037 1750
1038 f = shift * ev_floor (v * (1. / shift)); 1751 f = shift * ev_floor (v * (1. / shift));
1039 return f + ev_floor (v - f); 1752 return f + ev_floor (v - f);
1040 } 1753 }
1041 1754
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 */ 1755 /* fits into an unsigned long */
1051 return (unsigned long)v; 1756 return (unsigned long)v;
1052} 1757}
1053 1758
1054#endif 1759#endif
… …
1057 1762
1058#ifdef __linux 1763#ifdef __linux
1059# include <sys/utsname.h> 1764# include <sys/utsname.h>
1060#endif 1765#endif
1061 1766
1062static unsigned int noinline ecb_cold 1767ecb_noinline ecb_cold
1768static unsigned int
1063ev_linux_version (void) 1769ev_linux_version (void)
1064{ 1770{
1065#ifdef __linux 1771#ifdef __linux
1066 unsigned int v = 0; 1772 unsigned int v = 0;
1067 struct utsname buf; 1773 struct utsname buf;
… …
1096} 1802}
1097 1803
1098/*****************************************************************************/ 1804/*****************************************************************************/
1099 1805
1100#if EV_AVOID_STDIO 1806#if EV_AVOID_STDIO
1101static void noinline ecb_cold 1807ecb_noinline ecb_cold
1808static void
1102ev_printerr (const char *msg) 1809ev_printerr (const char *msg)
1103{ 1810{
1104 write (STDERR_FILENO, msg, strlen (msg)); 1811 write (STDERR_FILENO, msg, strlen (msg));
1105} 1812}
1106#endif 1813#endif
1107 1814
1108static void (*syserr_cb)(const char *msg); 1815static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
1109 1816
1110void ecb_cold 1817ecb_cold
1818void
1111ev_set_syserr_cb (void (*cb)(const char *msg)) 1819ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
1112{ 1820{
1113 syserr_cb = cb; 1821 syserr_cb = cb;
1114} 1822}
1115 1823
1116static void noinline ecb_cold 1824ecb_noinline ecb_cold
1825static void
1117ev_syserr (const char *msg) 1826ev_syserr (const char *msg)
1118{ 1827{
1119 if (!msg) 1828 if (!msg)
1120 msg = "(libev) system error"; 1829 msg = "(libev) system error";
1121 1830
… …
1134 abort (); 1843 abort ();
1135 } 1844 }
1136} 1845}
1137 1846
1138static void * 1847static void *
1139ev_realloc_emul (void *ptr, long size) 1848ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
1140{ 1849{
1141#if __GLIBC__
1142 return realloc (ptr, size);
1143#else
1144 /* some systems, notably openbsd and darwin, fail to properly 1850 /* some systems, notably openbsd and darwin, fail to properly
1145 * implement realloc (x, 0) (as required by both ansi c-89 and 1851 * implement realloc (x, 0) (as required by both ansi c-89 and
1146 * the single unix specification, so work around them here. 1852 * the single unix specification, so work around them here.
1853 * recently, also (at least) fedora and debian started breaking it,
1854 * despite documenting it otherwise.
1147 */ 1855 */
1148 1856
1149 if (size) 1857 if (size)
1150 return realloc (ptr, size); 1858 return realloc (ptr, size);
1151 1859
1152 free (ptr); 1860 free (ptr);
1153 return 0; 1861 return 0;
1154#endif
1155} 1862}
1156 1863
1157static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1864static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
1158 1865
1159void ecb_cold 1866ecb_cold
1867void
1160ev_set_allocator (void *(*cb)(void *ptr, long size)) 1868ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
1161{ 1869{
1162 alloc = cb; 1870 alloc = cb;
1163} 1871}
1164 1872
1165inline_speed void * 1873inline_speed void *
… …
1192typedef struct 1900typedef struct
1193{ 1901{
1194 WL head; 1902 WL head;
1195 unsigned char events; /* the events watched for */ 1903 unsigned char events; /* the events watched for */
1196 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 1904 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 */ 1905 unsigned char emask; /* some backends store the actual kernel mask in here */
1198 unsigned char unused; 1906 unsigned char eflags; /* flags field for use by backends */
1199#if EV_USE_EPOLL 1907#if EV_USE_EPOLL
1200 unsigned int egen; /* generation counter to counter epoll bugs */ 1908 unsigned int egen; /* generation counter to counter epoll bugs */
1201#endif 1909#endif
1202#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 1910#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1203 SOCKET handle; 1911 SOCKET handle;
… …
1267 static int ev_default_loop_ptr; 1975 static int ev_default_loop_ptr;
1268 1976
1269#endif 1977#endif
1270 1978
1271#if EV_FEATURE_API 1979#if EV_FEATURE_API
1272# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1980# 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) 1981# define EV_ACQUIRE_CB if (ecb_expect_false (acquire_cb)) acquire_cb (EV_A)
1274# define EV_INVOKE_PENDING invoke_cb (EV_A) 1982# define EV_INVOKE_PENDING invoke_cb (EV_A)
1275#else 1983#else
1276# define EV_RELEASE_CB (void)0 1984# define EV_RELEASE_CB (void)0
1277# define EV_ACQUIRE_CB (void)0 1985# define EV_ACQUIRE_CB (void)0
1278# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1986# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
… …
1282 1990
1283/*****************************************************************************/ 1991/*****************************************************************************/
1284 1992
1285#ifndef EV_HAVE_EV_TIME 1993#ifndef EV_HAVE_EV_TIME
1286ev_tstamp 1994ev_tstamp
1287ev_time (void) 1995ev_time (void) EV_NOEXCEPT
1288{ 1996{
1289#if EV_USE_REALTIME 1997#if EV_USE_REALTIME
1290 if (expect_true (have_realtime)) 1998 if (ecb_expect_true (have_realtime))
1291 { 1999 {
1292 struct timespec ts; 2000 struct timespec ts;
1293 clock_gettime (CLOCK_REALTIME, &ts); 2001 clock_gettime (CLOCK_REALTIME, &ts);
1294 return ts.tv_sec + ts.tv_nsec * 1e-9; 2002 return EV_TS_GET (ts);
1295 } 2003 }
1296#endif 2004#endif
1297 2005
1298 struct timeval tv; 2006 struct timeval tv;
1299 gettimeofday (&tv, 0); 2007 gettimeofday (&tv, 0);
1300 return tv.tv_sec + tv.tv_usec * 1e-6; 2008 return EV_TV_GET (tv);
1301} 2009}
1302#endif 2010#endif
1303 2011
1304inline_size ev_tstamp 2012inline_size ev_tstamp
1305get_clock (void) 2013get_clock (void)
1306{ 2014{
1307#if EV_USE_MONOTONIC 2015#if EV_USE_MONOTONIC
1308 if (expect_true (have_monotonic)) 2016 if (ecb_expect_true (have_monotonic))
1309 { 2017 {
1310 struct timespec ts; 2018 struct timespec ts;
1311 clock_gettime (CLOCK_MONOTONIC, &ts); 2019 clock_gettime (CLOCK_MONOTONIC, &ts);
1312 return ts.tv_sec + ts.tv_nsec * 1e-9; 2020 return EV_TS_GET (ts);
1313 } 2021 }
1314#endif 2022#endif
1315 2023
1316 return ev_time (); 2024 return ev_time ();
1317} 2025}
1318 2026
1319#if EV_MULTIPLICITY 2027#if EV_MULTIPLICITY
1320ev_tstamp 2028ev_tstamp
1321ev_now (EV_P) 2029ev_now (EV_P) EV_NOEXCEPT
1322{ 2030{
1323 return ev_rt_now; 2031 return ev_rt_now;
1324} 2032}
1325#endif 2033#endif
1326 2034
1327void 2035void
1328ev_sleep (ev_tstamp delay) 2036ev_sleep (ev_tstamp delay) EV_NOEXCEPT
1329{ 2037{
1330 if (delay > 0.) 2038 if (delay > 0.)
1331 { 2039 {
1332#if EV_USE_NANOSLEEP 2040#if EV_USE_NANOSLEEP
1333 struct timespec ts; 2041 struct timespec ts;
1334 2042
1335 EV_TS_SET (ts, delay); 2043 EV_TS_SET (ts, delay);
1336 nanosleep (&ts, 0); 2044 nanosleep (&ts, 0);
1337#elif defined(_WIN32) 2045#elif defined _WIN32
2046 /* maybe this should round up, as ms is very low resolution */
2047 /* compared to select (µs) or nanosleep (ns) */
1338 Sleep ((unsigned long)(delay * 1e3)); 2048 Sleep ((unsigned long)(EV_TS_TO_MSEC (delay)));
1339#else 2049#else
1340 struct timeval tv; 2050 struct timeval tv;
1341 2051
1342 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 2052 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
1343 /* something not guaranteed by newer posix versions, but guaranteed */ 2053 /* something not guaranteed by newer posix versions, but guaranteed */
… …
1373 } 2083 }
1374 2084
1375 return ncur; 2085 return ncur;
1376} 2086}
1377 2087
1378static void * noinline ecb_cold 2088ecb_noinline ecb_cold
2089static void *
1379array_realloc (int elem, void *base, int *cur, int cnt) 2090array_realloc (int elem, void *base, int *cur, int cnt)
1380{ 2091{
1381 *cur = array_nextsize (elem, *cur, cnt); 2092 *cur = array_nextsize (elem, *cur, cnt);
1382 return ev_realloc (base, elem * *cur); 2093 return ev_realloc (base, elem * *cur);
1383} 2094}
1384 2095
2096#define array_needsize_noinit(base,offset,count)
2097
1385#define array_init_zero(base,count) \ 2098#define array_needsize_zerofill(base,offset,count) \
1386 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2099 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
1387 2100
1388#define array_needsize(type,base,cur,cnt,init) \ 2101#define array_needsize(type,base,cur,cnt,init) \
1389 if (expect_false ((cnt) > (cur))) \ 2102 if (ecb_expect_false ((cnt) > (cur))) \
1390 { \ 2103 { \
1391 int ecb_unused ocur_ = (cur); \ 2104 ecb_unused int ocur_ = (cur); \
1392 (base) = (type *)array_realloc \ 2105 (base) = (type *)array_realloc \
1393 (sizeof (type), (base), &(cur), (cnt)); \ 2106 (sizeof (type), (base), &(cur), (cnt)); \
1394 init ((base) + (ocur_), (cur) - ocur_); \ 2107 init ((base), ocur_, ((cur) - ocur_)); \
1395 } 2108 }
1396 2109
1397#if 0 2110#if 0
1398#define array_slim(type,stem) \ 2111#define array_slim(type,stem) \
1399 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2112 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 2121 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
1409 2122
1410/*****************************************************************************/ 2123/*****************************************************************************/
1411 2124
1412/* dummy callback for pending events */ 2125/* dummy callback for pending events */
1413static void noinline 2126ecb_noinline
2127static void
1414pendingcb (EV_P_ ev_prepare *w, int revents) 2128pendingcb (EV_P_ ev_prepare *w, int revents)
1415{ 2129{
1416} 2130}
1417 2131
1418void noinline 2132ecb_noinline
2133void
1419ev_feed_event (EV_P_ void *w, int revents) 2134ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
1420{ 2135{
1421 W w_ = (W)w; 2136 W w_ = (W)w;
1422 int pri = ABSPRI (w_); 2137 int pri = ABSPRI (w_);
1423 2138
1424 if (expect_false (w_->pending)) 2139 if (ecb_expect_false (w_->pending))
1425 pendings [pri][w_->pending - 1].events |= revents; 2140 pendings [pri][w_->pending - 1].events |= revents;
1426 else 2141 else
1427 { 2142 {
1428 w_->pending = ++pendingcnt [pri]; 2143 w_->pending = ++pendingcnt [pri];
1429 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2144 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
1430 pendings [pri][w_->pending - 1].w = w_; 2145 pendings [pri][w_->pending - 1].w = w_;
1431 pendings [pri][w_->pending - 1].events = revents; 2146 pendings [pri][w_->pending - 1].events = revents;
1432 } 2147 }
2148
2149 pendingpri = NUMPRI - 1;
1433} 2150}
1434 2151
1435inline_speed void 2152inline_speed void
1436feed_reverse (EV_P_ W w) 2153feed_reverse (EV_P_ W w)
1437{ 2154{
1438 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2155 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
1439 rfeeds [rfeedcnt++] = w; 2156 rfeeds [rfeedcnt++] = w;
1440} 2157}
1441 2158
1442inline_size void 2159inline_size void
1443feed_reverse_done (EV_P_ int revents) 2160feed_reverse_done (EV_P_ int revents)
… …
1478inline_speed void 2195inline_speed void
1479fd_event (EV_P_ int fd, int revents) 2196fd_event (EV_P_ int fd, int revents)
1480{ 2197{
1481 ANFD *anfd = anfds + fd; 2198 ANFD *anfd = anfds + fd;
1482 2199
1483 if (expect_true (!anfd->reify)) 2200 if (ecb_expect_true (!anfd->reify))
1484 fd_event_nocheck (EV_A_ fd, revents); 2201 fd_event_nocheck (EV_A_ fd, revents);
1485} 2202}
1486 2203
1487void 2204void
1488ev_feed_fd_event (EV_P_ int fd, int revents) 2205ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
1489{ 2206{
1490 if (fd >= 0 && fd < anfdmax) 2207 if (fd >= 0 && fd < anfdmax)
1491 fd_event_nocheck (EV_A_ fd, revents); 2208 fd_event_nocheck (EV_A_ fd, revents);
1492} 2209}
1493 2210
… …
1530 ev_io *w; 2247 ev_io *w;
1531 2248
1532 unsigned char o_events = anfd->events; 2249 unsigned char o_events = anfd->events;
1533 unsigned char o_reify = anfd->reify; 2250 unsigned char o_reify = anfd->reify;
1534 2251
1535 anfd->reify = 0; 2252 anfd->reify = 0;
1536 2253
1537 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 2254 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
1538 { 2255 {
1539 anfd->events = 0; 2256 anfd->events = 0;
1540 2257
1541 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2258 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1542 anfd->events |= (unsigned char)w->events; 2259 anfd->events |= (unsigned char)w->events;
… …
1551 2268
1552 fdchangecnt = 0; 2269 fdchangecnt = 0;
1553} 2270}
1554 2271
1555/* something about the given fd changed */ 2272/* something about the given fd changed */
1556inline_size void 2273inline_size
2274void
1557fd_change (EV_P_ int fd, int flags) 2275fd_change (EV_P_ int fd, int flags)
1558{ 2276{
1559 unsigned char reify = anfds [fd].reify; 2277 unsigned char reify = anfds [fd].reify;
1560 anfds [fd].reify |= flags; 2278 anfds [fd].reify |= flags;
1561 2279
1562 if (expect_true (!reify)) 2280 if (ecb_expect_true (!reify))
1563 { 2281 {
1564 ++fdchangecnt; 2282 ++fdchangecnt;
1565 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2283 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
1566 fdchanges [fdchangecnt - 1] = fd; 2284 fdchanges [fdchangecnt - 1] = fd;
1567 } 2285 }
1568} 2286}
1569 2287
1570/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2288/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1571inline_speed void ecb_cold 2289inline_speed ecb_cold void
1572fd_kill (EV_P_ int fd) 2290fd_kill (EV_P_ int fd)
1573{ 2291{
1574 ev_io *w; 2292 ev_io *w;
1575 2293
1576 while ((w = (ev_io *)anfds [fd].head)) 2294 while ((w = (ev_io *)anfds [fd].head))
… …
1579 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2297 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1580 } 2298 }
1581} 2299}
1582 2300
1583/* check whether the given fd is actually valid, for error recovery */ 2301/* check whether the given fd is actually valid, for error recovery */
1584inline_size int ecb_cold 2302inline_size ecb_cold int
1585fd_valid (int fd) 2303fd_valid (int fd)
1586{ 2304{
1587#ifdef _WIN32 2305#ifdef _WIN32
1588 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2306 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1589#else 2307#else
1590 return fcntl (fd, F_GETFD) != -1; 2308 return fcntl (fd, F_GETFD) != -1;
1591#endif 2309#endif
1592} 2310}
1593 2311
1594/* called on EBADF to verify fds */ 2312/* called on EBADF to verify fds */
1595static void noinline ecb_cold 2313ecb_noinline ecb_cold
2314static void
1596fd_ebadf (EV_P) 2315fd_ebadf (EV_P)
1597{ 2316{
1598 int fd; 2317 int fd;
1599 2318
1600 for (fd = 0; fd < anfdmax; ++fd) 2319 for (fd = 0; fd < anfdmax; ++fd)
… …
1602 if (!fd_valid (fd) && errno == EBADF) 2321 if (!fd_valid (fd) && errno == EBADF)
1603 fd_kill (EV_A_ fd); 2322 fd_kill (EV_A_ fd);
1604} 2323}
1605 2324
1606/* called on ENOMEM in select/poll to kill some fds and retry */ 2325/* called on ENOMEM in select/poll to kill some fds and retry */
1607static void noinline ecb_cold 2326ecb_noinline ecb_cold
2327static void
1608fd_enomem (EV_P) 2328fd_enomem (EV_P)
1609{ 2329{
1610 int fd; 2330 int fd;
1611 2331
1612 for (fd = anfdmax; fd--; ) 2332 for (fd = anfdmax; fd--; )
… …
1616 break; 2336 break;
1617 } 2337 }
1618} 2338}
1619 2339
1620/* usually called after fork if backend needs to re-arm all fds from scratch */ 2340/* usually called after fork if backend needs to re-arm all fds from scratch */
1621static void noinline 2341ecb_noinline
2342static void
1622fd_rearm_all (EV_P) 2343fd_rearm_all (EV_P)
1623{ 2344{
1624 int fd; 2345 int fd;
1625 2346
1626 for (fd = 0; fd < anfdmax; ++fd) 2347 for (fd = 0; fd < anfdmax; ++fd)
… …
1679 ev_tstamp minat; 2400 ev_tstamp minat;
1680 ANHE *minpos; 2401 ANHE *minpos;
1681 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2402 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1682 2403
1683 /* find minimum child */ 2404 /* find minimum child */
1684 if (expect_true (pos + DHEAP - 1 < E)) 2405 if (ecb_expect_true (pos + DHEAP - 1 < E))
1685 { 2406 {
1686 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2407 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1687 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2408 if ( minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1688 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2409 if ( minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1689 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2410 if ( minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1690 } 2411 }
1691 else if (pos < E) 2412 else if (pos < E)
1692 { 2413 {
1693 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2414 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1694 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2415 if (pos + 1 < E && minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1695 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2416 if (pos + 2 < E && minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1696 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2417 if (pos + 3 < E && minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1697 } 2418 }
1698 else 2419 else
1699 break; 2420 break;
1700 2421
1701 if (ANHE_at (he) <= minat) 2422 if (ANHE_at (he) <= minat)
… …
1709 2430
1710 heap [k] = he; 2431 heap [k] = he;
1711 ev_active (ANHE_w (he)) = k; 2432 ev_active (ANHE_w (he)) = k;
1712} 2433}
1713 2434
1714#else /* 4HEAP */ 2435#else /* not 4HEAP */
1715 2436
1716#define HEAP0 1 2437#define HEAP0 1
1717#define HPARENT(k) ((k) >> 1) 2438#define HPARENT(k) ((k) >> 1)
1718#define UPHEAP_DONE(p,k) (!(p)) 2439#define UPHEAP_DONE(p,k) (!(p))
1719 2440
… …
1807 2528
1808/*****************************************************************************/ 2529/*****************************************************************************/
1809 2530
1810#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2531#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1811 2532
1812static void noinline ecb_cold 2533ecb_noinline ecb_cold
2534static void
1813evpipe_init (EV_P) 2535evpipe_init (EV_P)
1814{ 2536{
1815 if (!ev_is_active (&pipe_w)) 2537 if (!ev_is_active (&pipe_w))
1816 { 2538 {
2539 int fds [2];
2540
1817# if EV_USE_EVENTFD 2541# if EV_USE_EVENTFD
2542 fds [0] = -1;
1818 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2543 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1819 if (evfd < 0 && errno == EINVAL) 2544 if (fds [1] < 0 && errno == EINVAL)
1820 evfd = eventfd (0, 0); 2545 fds [1] = eventfd (0, 0);
1821 2546
1822 if (evfd >= 0) 2547 if (fds [1] < 0)
2548# endif
1823 { 2549 {
2550 while (pipe (fds))
2551 ev_syserr ("(libev) error creating signal/async pipe");
2552
2553 fd_intern (fds [0]);
2554 }
2555
1824 evpipe [0] = -1; 2556 evpipe [0] = fds [0];
1825 fd_intern (evfd); /* doing it twice doesn't hurt */ 2557
1826 ev_io_set (&pipe_w, evfd, EV_READ); 2558 if (evpipe [1] < 0)
2559 evpipe [1] = fds [1]; /* first call, set write fd */
2560 else
2561 {
2562 /* on subsequent calls, do not change evpipe [1] */
2563 /* so that evpipe_write can always rely on its value. */
2564 /* this branch does not do anything sensible on windows, */
2565 /* so must not be executed on windows */
2566
2567 dup2 (fds [1], evpipe [1]);
2568 close (fds [1]);
2569 }
2570
2571 fd_intern (evpipe [1]);
2572
2573 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2574 ev_io_start (EV_A_ &pipe_w);
2575 ev_unref (EV_A); /* watcher should not keep loop alive */
2576 }
2577}
2578
2579inline_speed void
2580evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2581{
2582 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2583
2584 if (ecb_expect_true (*flag))
2585 return;
2586
2587 *flag = 1;
2588 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2589
2590 pipe_write_skipped = 1;
2591
2592 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2593
2594 if (pipe_write_wanted)
2595 {
2596 int old_errno;
2597
2598 pipe_write_skipped = 0;
2599 ECB_MEMORY_FENCE_RELEASE;
2600
2601 old_errno = errno; /* save errno because write will clobber it */
2602
2603#if EV_USE_EVENTFD
2604 if (evpipe [0] < 0)
2605 {
2606 uint64_t counter = 1;
2607 write (evpipe [1], &counter, sizeof (uint64_t));
1827 } 2608 }
1828 else 2609 else
1829# endif 2610#endif
1830 { 2611 {
1831 while (pipe (evpipe)) 2612#ifdef _WIN32
1832 ev_syserr ("(libev) error creating signal/async pipe"); 2613 WSABUF buf;
1833 2614 DWORD sent;
1834 fd_intern (evpipe [0]); 2615 buf.buf = (char *)&buf;
1835 fd_intern (evpipe [1]); 2616 buf.len = 1;
1836 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2617 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1837 } 2618#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); 2619 write (evpipe [1], &(evpipe [1]), 1);
2620#endif
1883 } 2621 }
1884 2622
1885 errno = old_errno; 2623 errno = old_errno;
1886 } 2624 }
1887} 2625}
… …
1894 int i; 2632 int i;
1895 2633
1896 if (revents & EV_READ) 2634 if (revents & EV_READ)
1897 { 2635 {
1898#if EV_USE_EVENTFD 2636#if EV_USE_EVENTFD
1899 if (evfd >= 0) 2637 if (evpipe [0] < 0)
1900 { 2638 {
1901 uint64_t counter; 2639 uint64_t counter;
1902 read (evfd, &counter, sizeof (uint64_t)); 2640 read (evpipe [1], &counter, sizeof (uint64_t));
1903 } 2641 }
1904 else 2642 else
1905#endif 2643#endif
1906 { 2644 {
1907 char dummy; 2645 char dummy[4];
1908 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2646#ifdef _WIN32
2647 WSABUF buf;
2648 DWORD recvd;
2649 DWORD flags = 0;
2650 buf.buf = dummy;
2651 buf.len = sizeof (dummy);
2652 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2653#else
1909 read (evpipe [0], &dummy, 1); 2654 read (evpipe [0], &dummy, sizeof (dummy));
2655#endif
1910 } 2656 }
1911 } 2657 }
1912 2658
1913 pipe_write_skipped = 0; 2659 pipe_write_skipped = 0;
2660
2661 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1914 2662
1915#if EV_SIGNAL_ENABLE 2663#if EV_SIGNAL_ENABLE
1916 if (sig_pending) 2664 if (sig_pending)
1917 { 2665 {
1918 sig_pending = 0; 2666 sig_pending = 0;
1919 2667
2668 ECB_MEMORY_FENCE;
2669
1920 for (i = EV_NSIG - 1; i--; ) 2670 for (i = EV_NSIG - 1; i--; )
1921 if (expect_false (signals [i].pending)) 2671 if (ecb_expect_false (signals [i].pending))
1922 ev_feed_signal_event (EV_A_ i + 1); 2672 ev_feed_signal_event (EV_A_ i + 1);
1923 } 2673 }
1924#endif 2674#endif
1925 2675
1926#if EV_ASYNC_ENABLE 2676#if EV_ASYNC_ENABLE
1927 if (async_pending) 2677 if (async_pending)
1928 { 2678 {
1929 async_pending = 0; 2679 async_pending = 0;
2680
2681 ECB_MEMORY_FENCE;
1930 2682
1931 for (i = asynccnt; i--; ) 2683 for (i = asynccnt; i--; )
1932 if (asyncs [i]->sent) 2684 if (asyncs [i]->sent)
1933 { 2685 {
1934 asyncs [i]->sent = 0; 2686 asyncs [i]->sent = 0;
2687 ECB_MEMORY_FENCE_RELEASE;
1935 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2688 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1936 } 2689 }
1937 } 2690 }
1938#endif 2691#endif
1939} 2692}
1940 2693
1941/*****************************************************************************/ 2694/*****************************************************************************/
1942 2695
1943void 2696void
1944ev_feed_signal (int signum) 2697ev_feed_signal (int signum) EV_NOEXCEPT
1945{ 2698{
1946#if EV_MULTIPLICITY 2699#if EV_MULTIPLICITY
2700 EV_P;
2701 ECB_MEMORY_FENCE_ACQUIRE;
1947 EV_P = signals [signum - 1].loop; 2702 EV_A = signals [signum - 1].loop;
1948 2703
1949 if (!EV_A) 2704 if (!EV_A)
1950 return; 2705 return;
1951#endif 2706#endif
1952 2707
1953 if (!ev_active (&pipe_w))
1954 return;
1955
1956 signals [signum - 1].pending = 1; 2708 signals [signum - 1].pending = 1;
1957 evpipe_write (EV_A_ &sig_pending); 2709 evpipe_write (EV_A_ &sig_pending);
1958} 2710}
1959 2711
1960static void 2712static void
… …
1965#endif 2717#endif
1966 2718
1967 ev_feed_signal (signum); 2719 ev_feed_signal (signum);
1968} 2720}
1969 2721
1970void noinline 2722ecb_noinline
2723void
1971ev_feed_signal_event (EV_P_ int signum) 2724ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1972{ 2725{
1973 WL w; 2726 WL w;
1974 2727
1975 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2728 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
1976 return; 2729 return;
1977 2730
1978 --signum; 2731 --signum;
1979 2732
1980#if EV_MULTIPLICITY 2733#if EV_MULTIPLICITY
1981 /* it is permissible to try to feed a signal to the wrong loop */ 2734 /* 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 */ 2735 /* or, likely more useful, feeding a signal nobody is waiting for */
1983 2736
1984 if (expect_false (signals [signum].loop != EV_A)) 2737 if (ecb_expect_false (signals [signum].loop != EV_A))
1985 return; 2738 return;
1986#endif 2739#endif
1987 2740
1988 signals [signum].pending = 0; 2741 signals [signum].pending = 0;
2742 ECB_MEMORY_FENCE_RELEASE;
1989 2743
1990 for (w = signals [signum].head; w; w = w->next) 2744 for (w = signals [signum].head; w; w = w->next)
1991 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2745 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1992} 2746}
1993 2747
… …
2084# include "ev_kqueue.c" 2838# include "ev_kqueue.c"
2085#endif 2839#endif
2086#if EV_USE_EPOLL 2840#if EV_USE_EPOLL
2087# include "ev_epoll.c" 2841# include "ev_epoll.c"
2088#endif 2842#endif
2843#if EV_USE_LINUXAIO
2844# include "ev_linuxaio.c"
2845#endif
2846#if EV_USE_IOURING
2847# include "ev_iouring.c"
2848#endif
2089#if EV_USE_POLL 2849#if EV_USE_POLL
2090# include "ev_poll.c" 2850# include "ev_poll.c"
2091#endif 2851#endif
2092#if EV_USE_SELECT 2852#if EV_USE_SELECT
2093# include "ev_select.c" 2853# include "ev_select.c"
2094#endif 2854#endif
2095 2855
2096int ecb_cold 2856ecb_cold int
2097ev_version_major (void) 2857ev_version_major (void) EV_NOEXCEPT
2098{ 2858{
2099 return EV_VERSION_MAJOR; 2859 return EV_VERSION_MAJOR;
2100} 2860}
2101 2861
2102int ecb_cold 2862ecb_cold int
2103ev_version_minor (void) 2863ev_version_minor (void) EV_NOEXCEPT
2104{ 2864{
2105 return EV_VERSION_MINOR; 2865 return EV_VERSION_MINOR;
2106} 2866}
2107 2867
2108/* return true if we are running with elevated privileges and should ignore env variables */ 2868/* return true if we are running with elevated privileges and should ignore env variables */
2109int inline_size ecb_cold 2869inline_size ecb_cold int
2110enable_secure (void) 2870enable_secure (void)
2111{ 2871{
2112#ifdef _WIN32 2872#ifdef _WIN32
2113 return 0; 2873 return 0;
2114#else 2874#else
2115 return getuid () != geteuid () 2875 return getuid () != geteuid ()
2116 || getgid () != getegid (); 2876 || getgid () != getegid ();
2117#endif 2877#endif
2118} 2878}
2119 2879
2120unsigned int ecb_cold 2880ecb_cold
2881unsigned int
2121ev_supported_backends (void) 2882ev_supported_backends (void) EV_NOEXCEPT
2122{ 2883{
2123 unsigned int flags = 0; 2884 unsigned int flags = 0;
2124 2885
2125 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2886 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2126 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2887 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
2127 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2888 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2889 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
2890 if (EV_USE_IOURING ) flags |= EVBACKEND_IOURING;
2128 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2891 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
2129 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2892 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
2130 2893
2131 return flags; 2894 return flags;
2132} 2895}
2133 2896
2134unsigned int ecb_cold 2897ecb_cold
2898unsigned int
2135ev_recommended_backends (void) 2899ev_recommended_backends (void) EV_NOEXCEPT
2136{ 2900{
2137 unsigned int flags = ev_supported_backends (); 2901 unsigned int flags = ev_supported_backends ();
2138 2902
2139#ifndef __NetBSD__ 2903#ifndef __NetBSD__
2140 /* kqueue is borked on everything but netbsd apparently */ 2904 /* kqueue is borked on everything but netbsd apparently */
… …
2148#endif 2912#endif
2149#ifdef __FreeBSD__ 2913#ifdef __FreeBSD__
2150 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ 2914 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2151#endif 2915#endif
2152 2916
2917 /* TODO: linuxaio is very experimental */
2918#if !EV_RECOMMEND_LINUXAIO
2919 flags &= ~EVBACKEND_LINUXAIO;
2920#endif
2921 /* TODO: linuxaio is super experimental */
2922#if !EV_RECOMMEND_IOURING
2923 flags &= ~EVBACKEND_IOURING;
2924#endif
2925
2153 return flags; 2926 return flags;
2154} 2927}
2155 2928
2156unsigned int ecb_cold 2929ecb_cold
2930unsigned int
2157ev_embeddable_backends (void) 2931ev_embeddable_backends (void) EV_NOEXCEPT
2158{ 2932{
2159 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2933 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2160 2934
2161 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2935 /* 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 */ 2936 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2163 flags &= ~EVBACKEND_EPOLL; 2937 flags &= ~EVBACKEND_EPOLL;
2164 2938
2939 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
2940
2941 /* EVBACKEND_IOURING is practically embeddable, but the current implementation is not
2942 * because our backend_fd is the epoll fd we need as fallback.
2943 * if the kernel ever is fixed, this might change...
2944 */
2945
2165 return flags; 2946 return flags;
2166} 2947}
2167 2948
2168unsigned int 2949unsigned int
2169ev_backend (EV_P) 2950ev_backend (EV_P) EV_NOEXCEPT
2170{ 2951{
2171 return backend; 2952 return backend;
2172} 2953}
2173 2954
2174#if EV_FEATURE_API 2955#if EV_FEATURE_API
2175unsigned int 2956unsigned int
2176ev_iteration (EV_P) 2957ev_iteration (EV_P) EV_NOEXCEPT
2177{ 2958{
2178 return loop_count; 2959 return loop_count;
2179} 2960}
2180 2961
2181unsigned int 2962unsigned int
2182ev_depth (EV_P) 2963ev_depth (EV_P) EV_NOEXCEPT
2183{ 2964{
2184 return loop_depth; 2965 return loop_depth;
2185} 2966}
2186 2967
2187void 2968void
2188ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2969ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2189{ 2970{
2190 io_blocktime = interval; 2971 io_blocktime = interval;
2191} 2972}
2192 2973
2193void 2974void
2194ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2975ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2195{ 2976{
2196 timeout_blocktime = interval; 2977 timeout_blocktime = interval;
2197} 2978}
2198 2979
2199void 2980void
2200ev_set_userdata (EV_P_ void *data) 2981ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2201{ 2982{
2202 userdata = data; 2983 userdata = data;
2203} 2984}
2204 2985
2205void * 2986void *
2206ev_userdata (EV_P) 2987ev_userdata (EV_P) EV_NOEXCEPT
2207{ 2988{
2208 return userdata; 2989 return userdata;
2209} 2990}
2210 2991
2211void 2992void
2212ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2993ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
2213{ 2994{
2214 invoke_cb = invoke_pending_cb; 2995 invoke_cb = invoke_pending_cb;
2215} 2996}
2216 2997
2217void 2998void
2218ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2999ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
2219{ 3000{
2220 release_cb = release; 3001 release_cb = release;
2221 acquire_cb = acquire; 3002 acquire_cb = acquire;
2222} 3003}
2223#endif 3004#endif
2224 3005
2225/* initialise a loop structure, must be zero-initialised */ 3006/* initialise a loop structure, must be zero-initialised */
2226static void noinline ecb_cold 3007ecb_noinline ecb_cold
3008static void
2227loop_init (EV_P_ unsigned int flags) 3009loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
2228{ 3010{
2229 if (!backend) 3011 if (!backend)
2230 { 3012 {
2231 origflags = flags; 3013 origflags = flags;
2232 3014
… …
2277#if EV_ASYNC_ENABLE 3059#if EV_ASYNC_ENABLE
2278 async_pending = 0; 3060 async_pending = 0;
2279#endif 3061#endif
2280 pipe_write_skipped = 0; 3062 pipe_write_skipped = 0;
2281 pipe_write_wanted = 0; 3063 pipe_write_wanted = 0;
3064 evpipe [0] = -1;
3065 evpipe [1] = -1;
2282#if EV_USE_INOTIFY 3066#if EV_USE_INOTIFY
2283 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3067 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2284#endif 3068#endif
2285#if EV_USE_SIGNALFD 3069#if EV_USE_SIGNALFD
2286 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 3070 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
… …
2288 3072
2289 if (!(flags & EVBACKEND_MASK)) 3073 if (!(flags & EVBACKEND_MASK))
2290 flags |= ev_recommended_backends (); 3074 flags |= ev_recommended_backends ();
2291 3075
2292#if EV_USE_IOCP 3076#if EV_USE_IOCP
2293 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 3077 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2294#endif 3078#endif
2295#if EV_USE_PORT 3079#if EV_USE_PORT
2296 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3080 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
2297#endif 3081#endif
2298#if EV_USE_KQUEUE 3082#if EV_USE_KQUEUE
2299 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 3083 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
3084#endif
3085#if EV_USE_IOURING
3086 if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
3087#endif
3088#if EV_USE_LINUXAIO
3089 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
2300#endif 3090#endif
2301#if EV_USE_EPOLL 3091#if EV_USE_EPOLL
2302 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3092 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
2303#endif 3093#endif
2304#if EV_USE_POLL 3094#if EV_USE_POLL
2305 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3095 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
2306#endif 3096#endif
2307#if EV_USE_SELECT 3097#if EV_USE_SELECT
2308 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3098 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
2309#endif 3099#endif
2310 3100
2311 ev_prepare_init (&pending_w, pendingcb); 3101 ev_prepare_init (&pending_w, pendingcb);
2312 3102
2313#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3103#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
2316#endif 3106#endif
2317 } 3107 }
2318} 3108}
2319 3109
2320/* free up a loop structure */ 3110/* free up a loop structure */
2321void ecb_cold 3111ecb_cold
3112void
2322ev_loop_destroy (EV_P) 3113ev_loop_destroy (EV_P)
2323{ 3114{
2324 int i; 3115 int i;
2325 3116
2326#if EV_MULTIPLICITY 3117#if EV_MULTIPLICITY
… …
2329 return; 3120 return;
2330#endif 3121#endif
2331 3122
2332#if EV_CLEANUP_ENABLE 3123#if EV_CLEANUP_ENABLE
2333 /* queue cleanup watchers (and execute them) */ 3124 /* queue cleanup watchers (and execute them) */
2334 if (expect_false (cleanupcnt)) 3125 if (ecb_expect_false (cleanupcnt))
2335 { 3126 {
2336 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); 3127 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2337 EV_INVOKE_PENDING; 3128 EV_INVOKE_PENDING;
2338 } 3129 }
2339#endif 3130#endif
2340 3131
2341#if EV_CHILD_ENABLE 3132#if EV_CHILD_ENABLE
2342 if (ev_is_active (&childev)) 3133 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2343 { 3134 {
2344 ev_ref (EV_A); /* child watcher */ 3135 ev_ref (EV_A); /* child watcher */
2345 ev_signal_stop (EV_A_ &childev); 3136 ev_signal_stop (EV_A_ &childev);
2346 } 3137 }
2347#endif 3138#endif
… …
2349 if (ev_is_active (&pipe_w)) 3140 if (ev_is_active (&pipe_w))
2350 { 3141 {
2351 /*ev_ref (EV_A);*/ 3142 /*ev_ref (EV_A);*/
2352 /*ev_io_stop (EV_A_ &pipe_w);*/ 3143 /*ev_io_stop (EV_A_ &pipe_w);*/
2353 3144
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]); 3145 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2362 EV_WIN32_CLOSE_FD (evpipe [1]); 3146 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2363 }
2364 } 3147 }
2365 3148
2366#if EV_USE_SIGNALFD 3149#if EV_USE_SIGNALFD
2367 if (ev_is_active (&sigfd_w)) 3150 if (ev_is_active (&sigfd_w))
2368 close (sigfd); 3151 close (sigfd);
… …
2375 3158
2376 if (backend_fd >= 0) 3159 if (backend_fd >= 0)
2377 close (backend_fd); 3160 close (backend_fd);
2378 3161
2379#if EV_USE_IOCP 3162#if EV_USE_IOCP
2380 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3163 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2381#endif 3164#endif
2382#if EV_USE_PORT 3165#if EV_USE_PORT
2383 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3166 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
2384#endif 3167#endif
2385#if EV_USE_KQUEUE 3168#if EV_USE_KQUEUE
2386 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3169 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3170#endif
3171#if EV_USE_IOURING
3172 if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
3173#endif
3174#if EV_USE_LINUXAIO
3175 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
2387#endif 3176#endif
2388#if EV_USE_EPOLL 3177#if EV_USE_EPOLL
2389 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3178 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
2390#endif 3179#endif
2391#if EV_USE_POLL 3180#if EV_USE_POLL
2392 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3181 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
2393#endif 3182#endif
2394#if EV_USE_SELECT 3183#if EV_USE_SELECT
2395 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3184 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
2396#endif 3185#endif
2397 3186
2398 for (i = NUMPRI; i--; ) 3187 for (i = NUMPRI; i--; )
2399 { 3188 {
2400 array_free (pending, [i]); 3189 array_free (pending, [i]);
… …
2442 3231
2443inline_size void 3232inline_size void
2444loop_fork (EV_P) 3233loop_fork (EV_P)
2445{ 3234{
2446#if EV_USE_PORT 3235#if EV_USE_PORT
2447 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3236 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
2448#endif 3237#endif
2449#if EV_USE_KQUEUE 3238#if EV_USE_KQUEUE
2450 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3239 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3240#endif
3241#if EV_USE_IOURING
3242 if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
3243#endif
3244#if EV_USE_LINUXAIO
3245 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
2451#endif 3246#endif
2452#if EV_USE_EPOLL 3247#if EV_USE_EPOLL
2453 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3248 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
2454#endif 3249#endif
2455#if EV_USE_INOTIFY 3250#if EV_USE_INOTIFY
2456 infy_fork (EV_A); 3251 infy_fork (EV_A);
2457#endif 3252#endif
2458 3253
3254#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2459 if (ev_is_active (&pipe_w)) 3255 if (ev_is_active (&pipe_w) && postfork != 2)
2460 { 3256 {
2461 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 3257 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2462 3258
2463 ev_ref (EV_A); 3259 ev_ref (EV_A);
2464 ev_io_stop (EV_A_ &pipe_w); 3260 ev_io_stop (EV_A_ &pipe_w);
2465 3261
2466#if EV_USE_EVENTFD
2467 if (evfd >= 0)
2468 close (evfd);
2469#endif
2470
2471 if (evpipe [0] >= 0) 3262 if (evpipe [0] >= 0)
2472 {
2473 EV_WIN32_CLOSE_FD (evpipe [0]); 3263 EV_WIN32_CLOSE_FD (evpipe [0]);
2474 EV_WIN32_CLOSE_FD (evpipe [1]);
2475 }
2476 3264
2477#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2478 evpipe_init (EV_A); 3265 evpipe_init (EV_A);
2479 /* now iterate over everything, in case we missed something */ 3266 /* iterate over everything, in case we missed something before */
2480 pipecb (EV_A_ &pipe_w, EV_READ); 3267 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2481#endif
2482 } 3268 }
3269#endif
2483 3270
2484 postfork = 0; 3271 postfork = 0;
2485} 3272}
2486 3273
2487#if EV_MULTIPLICITY 3274#if EV_MULTIPLICITY
2488 3275
3276ecb_cold
2489struct ev_loop * ecb_cold 3277struct ev_loop *
2490ev_loop_new (unsigned int flags) 3278ev_loop_new (unsigned int flags) EV_NOEXCEPT
2491{ 3279{
2492 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3280 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2493 3281
2494 memset (EV_A, 0, sizeof (struct ev_loop)); 3282 memset (EV_A, 0, sizeof (struct ev_loop));
2495 loop_init (EV_A_ flags); 3283 loop_init (EV_A_ flags);
… …
2502} 3290}
2503 3291
2504#endif /* multiplicity */ 3292#endif /* multiplicity */
2505 3293
2506#if EV_VERIFY 3294#if EV_VERIFY
2507static void noinline ecb_cold 3295ecb_noinline ecb_cold
3296static void
2508verify_watcher (EV_P_ W w) 3297verify_watcher (EV_P_ W w)
2509{ 3298{
2510 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3299 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2511 3300
2512 if (w->pending) 3301 if (w->pending)
2513 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3302 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2514} 3303}
2515 3304
2516static void noinline ecb_cold 3305ecb_noinline ecb_cold
3306static void
2517verify_heap (EV_P_ ANHE *heap, int N) 3307verify_heap (EV_P_ ANHE *heap, int N)
2518{ 3308{
2519 int i; 3309 int i;
2520 3310
2521 for (i = HEAP0; i < N + HEAP0; ++i) 3311 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2526 3316
2527 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3317 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2528 } 3318 }
2529} 3319}
2530 3320
2531static void noinline ecb_cold 3321ecb_noinline ecb_cold
3322static void
2532array_verify (EV_P_ W *ws, int cnt) 3323array_verify (EV_P_ W *ws, int cnt)
2533{ 3324{
2534 while (cnt--) 3325 while (cnt--)
2535 { 3326 {
2536 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3327 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2539} 3330}
2540#endif 3331#endif
2541 3332
2542#if EV_FEATURE_API 3333#if EV_FEATURE_API
2543void ecb_cold 3334void ecb_cold
2544ev_verify (EV_P) 3335ev_verify (EV_P) EV_NOEXCEPT
2545{ 3336{
2546#if EV_VERIFY 3337#if EV_VERIFY
2547 int i; 3338 int i;
2548 WL w; 3339 WL w, w2;
2549 3340
2550 assert (activecnt >= -1); 3341 assert (activecnt >= -1);
2551 3342
2552 assert (fdchangemax >= fdchangecnt); 3343 assert (fdchangemax >= fdchangecnt);
2553 for (i = 0; i < fdchangecnt; ++i) 3344 for (i = 0; i < fdchangecnt; ++i)
2554 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3345 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2555 3346
2556 assert (anfdmax >= 0); 3347 assert (anfdmax >= 0);
2557 for (i = 0; i < anfdmax; ++i) 3348 for (i = 0; i < anfdmax; ++i)
3349 {
3350 int j = 0;
3351
2558 for (w = anfds [i].head; w; w = w->next) 3352 for (w = w2 = anfds [i].head; w; w = w->next)
2559 { 3353 {
2560 verify_watcher (EV_A_ (W)w); 3354 verify_watcher (EV_A_ (W)w);
3355
3356 if (j++ & 1)
3357 {
3358 assert (("libev: io watcher list contains a loop", w != w2));
3359 w2 = w2->next;
3360 }
3361
2561 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3362 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)); 3363 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2563 } 3364 }
3365 }
2564 3366
2565 assert (timermax >= timercnt); 3367 assert (timermax >= timercnt);
2566 verify_heap (EV_A_ timers, timercnt); 3368 verify_heap (EV_A_ timers, timercnt);
2567 3369
2568#if EV_PERIODIC_ENABLE 3370#if EV_PERIODIC_ENABLE
… …
2614#endif 3416#endif
2615} 3417}
2616#endif 3418#endif
2617 3419
2618#if EV_MULTIPLICITY 3420#if EV_MULTIPLICITY
3421ecb_cold
2619struct ev_loop * ecb_cold 3422struct ev_loop *
2620#else 3423#else
2621int 3424int
2622#endif 3425#endif
2623ev_default_loop (unsigned int flags) 3426ev_default_loop (unsigned int flags) EV_NOEXCEPT
2624{ 3427{
2625 if (!ev_default_loop_ptr) 3428 if (!ev_default_loop_ptr)
2626 { 3429 {
2627#if EV_MULTIPLICITY 3430#if EV_MULTIPLICITY
2628 EV_P = ev_default_loop_ptr = &default_loop_struct; 3431 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2647 3450
2648 return ev_default_loop_ptr; 3451 return ev_default_loop_ptr;
2649} 3452}
2650 3453
2651void 3454void
2652ev_loop_fork (EV_P) 3455ev_loop_fork (EV_P) EV_NOEXCEPT
2653{ 3456{
2654 postfork = 1; /* must be in line with ev_default_fork */ 3457 postfork = 1;
2655} 3458}
2656 3459
2657/*****************************************************************************/ 3460/*****************************************************************************/
2658 3461
2659void 3462void
… …
2661{ 3464{
2662 EV_CB_INVOKE ((W)w, revents); 3465 EV_CB_INVOKE ((W)w, revents);
2663} 3466}
2664 3467
2665unsigned int 3468unsigned int
2666ev_pending_count (EV_P) 3469ev_pending_count (EV_P) EV_NOEXCEPT
2667{ 3470{
2668 int pri; 3471 int pri;
2669 unsigned int count = 0; 3472 unsigned int count = 0;
2670 3473
2671 for (pri = NUMPRI; pri--; ) 3474 for (pri = NUMPRI; pri--; )
2672 count += pendingcnt [pri]; 3475 count += pendingcnt [pri];
2673 3476
2674 return count; 3477 return count;
2675} 3478}
2676 3479
2677void noinline 3480ecb_noinline
3481void
2678ev_invoke_pending (EV_P) 3482ev_invoke_pending (EV_P)
2679{ 3483{
2680 int pri; 3484 pendingpri = NUMPRI;
2681 3485
2682 for (pri = NUMPRI; pri--; ) 3486 do
3487 {
3488 --pendingpri;
3489
3490 /* pendingpri possibly gets modified in the inner loop */
2683 while (pendingcnt [pri]) 3491 while (pendingcnt [pendingpri])
2684 { 3492 {
2685 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3493 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2686 3494
2687 p->w->pending = 0; 3495 p->w->pending = 0;
2688 EV_CB_INVOKE (p->w, p->events); 3496 EV_CB_INVOKE (p->w, p->events);
2689 EV_FREQUENT_CHECK; 3497 EV_FREQUENT_CHECK;
2690 } 3498 }
3499 }
3500 while (pendingpri);
2691} 3501}
2692 3502
2693#if EV_IDLE_ENABLE 3503#if EV_IDLE_ENABLE
2694/* make idle watchers pending. this handles the "call-idle */ 3504/* make idle watchers pending. this handles the "call-idle */
2695/* only when higher priorities are idle" logic */ 3505/* only when higher priorities are idle" logic */
2696inline_size void 3506inline_size void
2697idle_reify (EV_P) 3507idle_reify (EV_P)
2698{ 3508{
2699 if (expect_false (idleall)) 3509 if (ecb_expect_false (idleall))
2700 { 3510 {
2701 int pri; 3511 int pri;
2702 3512
2703 for (pri = NUMPRI; pri--; ) 3513 for (pri = NUMPRI; pri--; )
2704 { 3514 {
… …
2753 } 3563 }
2754} 3564}
2755 3565
2756#if EV_PERIODIC_ENABLE 3566#if EV_PERIODIC_ENABLE
2757 3567
2758static void noinline 3568ecb_noinline
3569static void
2759periodic_recalc (EV_P_ ev_periodic *w) 3570periodic_recalc (EV_P_ ev_periodic *w)
2760{ 3571{
2761 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3572 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); 3573 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2763 3574
… …
2765 while (at <= ev_rt_now) 3576 while (at <= ev_rt_now)
2766 { 3577 {
2767 ev_tstamp nat = at + w->interval; 3578 ev_tstamp nat = at + w->interval;
2768 3579
2769 /* when resolution fails us, we use ev_rt_now */ 3580 /* when resolution fails us, we use ev_rt_now */
2770 if (expect_false (nat == at)) 3581 if (ecb_expect_false (nat == at))
2771 { 3582 {
2772 at = ev_rt_now; 3583 at = ev_rt_now;
2773 break; 3584 break;
2774 } 3585 }
2775 3586
… …
2785{ 3596{
2786 EV_FREQUENT_CHECK; 3597 EV_FREQUENT_CHECK;
2787 3598
2788 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3599 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2789 { 3600 {
2790 int feed_count = 0;
2791
2792 do 3601 do
2793 { 3602 {
2794 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3603 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2795 3604
2796 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3605 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2823 } 3632 }
2824} 3633}
2825 3634
2826/* simply recalculate all periodics */ 3635/* simply recalculate all periodics */
2827/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3636/* TODO: maybe ensure that at least one event happens when jumping forward? */
2828static void noinline ecb_cold 3637ecb_noinline ecb_cold
3638static void
2829periodics_reschedule (EV_P) 3639periodics_reschedule (EV_P)
2830{ 3640{
2831 int i; 3641 int i;
2832 3642
2833 /* adjust periodics after time jump */ 3643 /* adjust periodics after time jump */
… …
2846 reheap (periodics, periodiccnt); 3656 reheap (periodics, periodiccnt);
2847} 3657}
2848#endif 3658#endif
2849 3659
2850/* adjust all timers by a given offset */ 3660/* adjust all timers by a given offset */
2851static void noinline ecb_cold 3661ecb_noinline ecb_cold
3662static void
2852timers_reschedule (EV_P_ ev_tstamp adjust) 3663timers_reschedule (EV_P_ ev_tstamp adjust)
2853{ 3664{
2854 int i; 3665 int i;
2855 3666
2856 for (i = 0; i < timercnt; ++i) 3667 for (i = 0; i < timercnt; ++i)
… …
2865/* also detect if there was a timejump, and act accordingly */ 3676/* also detect if there was a timejump, and act accordingly */
2866inline_speed void 3677inline_speed void
2867time_update (EV_P_ ev_tstamp max_block) 3678time_update (EV_P_ ev_tstamp max_block)
2868{ 3679{
2869#if EV_USE_MONOTONIC 3680#if EV_USE_MONOTONIC
2870 if (expect_true (have_monotonic)) 3681 if (ecb_expect_true (have_monotonic))
2871 { 3682 {
2872 int i; 3683 int i;
2873 ev_tstamp odiff = rtmn_diff; 3684 ev_tstamp odiff = rtmn_diff;
2874 3685
2875 mn_now = get_clock (); 3686 mn_now = get_clock ();
2876 3687
2877 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3688 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2878 /* interpolate in the meantime */ 3689 /* interpolate in the meantime */
2879 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3690 if (ecb_expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
2880 { 3691 {
2881 ev_rt_now = rtmn_diff + mn_now; 3692 ev_rt_now = rtmn_diff + mn_now;
2882 return; 3693 return;
2883 } 3694 }
2884 3695
… …
2898 ev_tstamp diff; 3709 ev_tstamp diff;
2899 rtmn_diff = ev_rt_now - mn_now; 3710 rtmn_diff = ev_rt_now - mn_now;
2900 3711
2901 diff = odiff - rtmn_diff; 3712 diff = odiff - rtmn_diff;
2902 3713
2903 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP)) 3714 if (ecb_expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2904 return; /* all is well */ 3715 return; /* all is well */
2905 3716
2906 ev_rt_now = ev_time (); 3717 ev_rt_now = ev_time ();
2907 mn_now = get_clock (); 3718 mn_now = get_clock ();
2908 now_floor = mn_now; 3719 now_floor = mn_now;
… …
2917 else 3728 else
2918#endif 3729#endif
2919 { 3730 {
2920 ev_rt_now = ev_time (); 3731 ev_rt_now = ev_time ();
2921 3732
2922 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 3733 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
2923 { 3734 {
2924 /* adjust timers. this is easy, as the offset is the same for all of them */ 3735 /* 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); 3736 timers_reschedule (EV_A_ ev_rt_now - mn_now);
2926#if EV_PERIODIC_ENABLE 3737#if EV_PERIODIC_ENABLE
2927 periodics_reschedule (EV_A); 3738 periodics_reschedule (EV_A);
… …
2930 3741
2931 mn_now = ev_rt_now; 3742 mn_now = ev_rt_now;
2932 } 3743 }
2933} 3744}
2934 3745
2935void 3746int
2936ev_run (EV_P_ int flags) 3747ev_run (EV_P_ int flags)
2937{ 3748{
2938#if EV_FEATURE_API 3749#if EV_FEATURE_API
2939 ++loop_depth; 3750 ++loop_depth;
2940#endif 3751#endif
… …
2950#if EV_VERIFY >= 2 3761#if EV_VERIFY >= 2
2951 ev_verify (EV_A); 3762 ev_verify (EV_A);
2952#endif 3763#endif
2953 3764
2954#ifndef _WIN32 3765#ifndef _WIN32
2955 if (expect_false (curpid)) /* penalise the forking check even more */ 3766 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
2956 if (expect_false (getpid () != curpid)) 3767 if (ecb_expect_false (getpid () != curpid))
2957 { 3768 {
2958 curpid = getpid (); 3769 curpid = getpid ();
2959 postfork = 1; 3770 postfork = 1;
2960 } 3771 }
2961#endif 3772#endif
2962 3773
2963#if EV_FORK_ENABLE 3774#if EV_FORK_ENABLE
2964 /* we might have forked, so queue fork handlers */ 3775 /* we might have forked, so queue fork handlers */
2965 if (expect_false (postfork)) 3776 if (ecb_expect_false (postfork))
2966 if (forkcnt) 3777 if (forkcnt)
2967 { 3778 {
2968 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3779 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2969 EV_INVOKE_PENDING; 3780 EV_INVOKE_PENDING;
2970 } 3781 }
2971#endif 3782#endif
2972 3783
2973#if EV_PREPARE_ENABLE 3784#if EV_PREPARE_ENABLE
2974 /* queue prepare watchers (and execute them) */ 3785 /* queue prepare watchers (and execute them) */
2975 if (expect_false (preparecnt)) 3786 if (ecb_expect_false (preparecnt))
2976 { 3787 {
2977 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3788 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2978 EV_INVOKE_PENDING; 3789 EV_INVOKE_PENDING;
2979 } 3790 }
2980#endif 3791#endif
2981 3792
2982 if (expect_false (loop_done)) 3793 if (ecb_expect_false (loop_done))
2983 break; 3794 break;
2984 3795
2985 /* we might have forked, so reify kernel state if necessary */ 3796 /* we might have forked, so reify kernel state if necessary */
2986 if (expect_false (postfork)) 3797 if (ecb_expect_false (postfork))
2987 loop_fork (EV_A); 3798 loop_fork (EV_A);
2988 3799
2989 /* update fd-related kernel structures */ 3800 /* update fd-related kernel structures */
2990 fd_reify (EV_A); 3801 fd_reify (EV_A);
2991 3802
… …
3003 /* from now on, we want a pipe-wake-up */ 3814 /* from now on, we want a pipe-wake-up */
3004 pipe_write_wanted = 1; 3815 pipe_write_wanted = 1;
3005 3816
3006 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */ 3817 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3007 3818
3008 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) 3819 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
3009 { 3820 {
3010 waittime = MAX_BLOCKTIME; 3821 waittime = MAX_BLOCKTIME;
3011 3822
3012 if (timercnt) 3823 if (timercnt)
3013 { 3824 {
… …
3022 if (waittime > to) waittime = to; 3833 if (waittime > to) waittime = to;
3023 } 3834 }
3024#endif 3835#endif
3025 3836
3026 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3837 /* don't let timeouts decrease the waittime below timeout_blocktime */
3027 if (expect_false (waittime < timeout_blocktime)) 3838 if (ecb_expect_false (waittime < timeout_blocktime))
3028 waittime = timeout_blocktime; 3839 waittime = timeout_blocktime;
3029 3840
3030 /* at this point, we NEED to wait, so we have to ensure */ 3841 /* at this point, we NEED to wait, so we have to ensure */
3031 /* to pass a minimum nonzero value to the backend */ 3842 /* to pass a minimum nonzero value to the backend */
3032 if (expect_false (waittime < backend_mintime)) 3843 if (ecb_expect_false (waittime < backend_mintime))
3033 waittime = backend_mintime; 3844 waittime = backend_mintime;
3034 3845
3035 /* extra check because io_blocktime is commonly 0 */ 3846 /* extra check because io_blocktime is commonly 0 */
3036 if (expect_false (io_blocktime)) 3847 if (ecb_expect_false (io_blocktime))
3037 { 3848 {
3038 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3849 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3039 3850
3040 if (sleeptime > waittime - backend_mintime) 3851 if (sleeptime > waittime - backend_mintime)
3041 sleeptime = waittime - backend_mintime; 3852 sleeptime = waittime - backend_mintime;
3042 3853
3043 if (expect_true (sleeptime > 0.)) 3854 if (ecb_expect_true (sleeptime > 0.))
3044 { 3855 {
3045 ev_sleep (sleeptime); 3856 ev_sleep (sleeptime);
3046 waittime -= sleeptime; 3857 waittime -= sleeptime;
3047 } 3858 }
3048 } 3859 }
… …
3055 backend_poll (EV_A_ waittime); 3866 backend_poll (EV_A_ waittime);
3056 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3867 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3057 3868
3058 pipe_write_wanted = 0; /* just an optimisation, no fence needed */ 3869 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3059 3870
3871 ECB_MEMORY_FENCE_ACQUIRE;
3060 if (pipe_write_skipped) 3872 if (pipe_write_skipped)
3061 { 3873 {
3062 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 3874 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); 3875 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3064 } 3876 }
3065 3877
3066
3067 /* update ev_rt_now, do magic */ 3878 /* update ev_rt_now, do magic */
3068 time_update (EV_A_ waittime + sleeptime); 3879 time_update (EV_A_ waittime + sleeptime);
3069 } 3880 }
3070 3881
3071 /* queue pending timers and reschedule them */ 3882 /* queue pending timers and reschedule them */
… …
3079 idle_reify (EV_A); 3890 idle_reify (EV_A);
3080#endif 3891#endif
3081 3892
3082#if EV_CHECK_ENABLE 3893#if EV_CHECK_ENABLE
3083 /* queue check watchers, to be executed first */ 3894 /* queue check watchers, to be executed first */
3084 if (expect_false (checkcnt)) 3895 if (ecb_expect_false (checkcnt))
3085 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3896 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3086#endif 3897#endif
3087 3898
3088 EV_INVOKE_PENDING; 3899 EV_INVOKE_PENDING;
3089 } 3900 }
3090 while (expect_true ( 3901 while (ecb_expect_true (
3091 activecnt 3902 activecnt
3092 && !loop_done 3903 && !loop_done
3093 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) 3904 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
3094 )); 3905 ));
3095 3906
… …
3097 loop_done = EVBREAK_CANCEL; 3908 loop_done = EVBREAK_CANCEL;
3098 3909
3099#if EV_FEATURE_API 3910#if EV_FEATURE_API
3100 --loop_depth; 3911 --loop_depth;
3101#endif 3912#endif
3102}
3103 3913
3914 return activecnt;
3915}
3916
3104void 3917void
3105ev_break (EV_P_ int how) 3918ev_break (EV_P_ int how) EV_NOEXCEPT
3106{ 3919{
3107 loop_done = how; 3920 loop_done = how;
3108} 3921}
3109 3922
3110void 3923void
3111ev_ref (EV_P) 3924ev_ref (EV_P) EV_NOEXCEPT
3112{ 3925{
3113 ++activecnt; 3926 ++activecnt;
3114} 3927}
3115 3928
3116void 3929void
3117ev_unref (EV_P) 3930ev_unref (EV_P) EV_NOEXCEPT
3118{ 3931{
3119 --activecnt; 3932 --activecnt;
3120} 3933}
3121 3934
3122void 3935void
3123ev_now_update (EV_P) 3936ev_now_update (EV_P) EV_NOEXCEPT
3124{ 3937{
3125 time_update (EV_A_ 1e100); 3938 time_update (EV_A_ 1e100);
3126} 3939}
3127 3940
3128void 3941void
3129ev_suspend (EV_P) 3942ev_suspend (EV_P) EV_NOEXCEPT
3130{ 3943{
3131 ev_now_update (EV_A); 3944 ev_now_update (EV_A);
3132} 3945}
3133 3946
3134void 3947void
3135ev_resume (EV_P) 3948ev_resume (EV_P) EV_NOEXCEPT
3136{ 3949{
3137 ev_tstamp mn_prev = mn_now; 3950 ev_tstamp mn_prev = mn_now;
3138 3951
3139 ev_now_update (EV_A); 3952 ev_now_update (EV_A);
3140 timers_reschedule (EV_A_ mn_now - mn_prev); 3953 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
3157inline_size void 3970inline_size void
3158wlist_del (WL *head, WL elem) 3971wlist_del (WL *head, WL elem)
3159{ 3972{
3160 while (*head) 3973 while (*head)
3161 { 3974 {
3162 if (expect_true (*head == elem)) 3975 if (ecb_expect_true (*head == elem))
3163 { 3976 {
3164 *head = elem->next; 3977 *head = elem->next;
3165 break; 3978 break;
3166 } 3979 }
3167 3980
… …
3179 w->pending = 0; 3992 w->pending = 0;
3180 } 3993 }
3181} 3994}
3182 3995
3183int 3996int
3184ev_clear_pending (EV_P_ void *w) 3997ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
3185{ 3998{
3186 W w_ = (W)w; 3999 W w_ = (W)w;
3187 int pending = w_->pending; 4000 int pending = w_->pending;
3188 4001
3189 if (expect_true (pending)) 4002 if (ecb_expect_true (pending))
3190 { 4003 {
3191 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4004 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3192 p->w = (W)&pending_w; 4005 p->w = (W)&pending_w;
3193 w_->pending = 0; 4006 w_->pending = 0;
3194 return p->events; 4007 return p->events;
… …
3221 w->active = 0; 4034 w->active = 0;
3222} 4035}
3223 4036
3224/*****************************************************************************/ 4037/*****************************************************************************/
3225 4038
3226void noinline 4039ecb_noinline
4040void
3227ev_io_start (EV_P_ ev_io *w) 4041ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
3228{ 4042{
3229 int fd = w->fd; 4043 int fd = w->fd;
3230 4044
3231 if (expect_false (ev_is_active (w))) 4045 if (ecb_expect_false (ev_is_active (w)))
3232 return; 4046 return;
3233 4047
3234 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4048 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)))); 4049 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
3236 4050
4051#if EV_VERIFY >= 2
4052 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4053#endif
3237 EV_FREQUENT_CHECK; 4054 EV_FREQUENT_CHECK;
3238 4055
3239 ev_start (EV_A_ (W)w, 1); 4056 ev_start (EV_A_ (W)w, 1);
3240 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4057 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
3241 wlist_add (&anfds[fd].head, (WL)w); 4058 wlist_add (&anfds[fd].head, (WL)w);
4059
4060 /* common bug, apparently */
4061 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3242 4062
3243 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 4063 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
3244 w->events &= ~EV__IOFDSET; 4064 w->events &= ~EV__IOFDSET;
3245 4065
3246 EV_FREQUENT_CHECK; 4066 EV_FREQUENT_CHECK;
3247} 4067}
3248 4068
3249void noinline 4069ecb_noinline
4070void
3250ev_io_stop (EV_P_ ev_io *w) 4071ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
3251{ 4072{
3252 clear_pending (EV_A_ (W)w); 4073 clear_pending (EV_A_ (W)w);
3253 if (expect_false (!ev_is_active (w))) 4074 if (ecb_expect_false (!ev_is_active (w)))
3254 return; 4075 return;
3255 4076
3256 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4077 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
3257 4078
4079#if EV_VERIFY >= 2
4080 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4081#endif
3258 EV_FREQUENT_CHECK; 4082 EV_FREQUENT_CHECK;
3259 4083
3260 wlist_del (&anfds[w->fd].head, (WL)w); 4084 wlist_del (&anfds[w->fd].head, (WL)w);
3261 ev_stop (EV_A_ (W)w); 4085 ev_stop (EV_A_ (W)w);
3262 4086
3263 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 4087 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3264 4088
3265 EV_FREQUENT_CHECK; 4089 EV_FREQUENT_CHECK;
3266} 4090}
3267 4091
3268void noinline 4092ecb_noinline
4093void
3269ev_timer_start (EV_P_ ev_timer *w) 4094ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
3270{ 4095{
3271 if (expect_false (ev_is_active (w))) 4096 if (ecb_expect_false (ev_is_active (w)))
3272 return; 4097 return;
3273 4098
3274 ev_at (w) += mn_now; 4099 ev_at (w) += mn_now;
3275 4100
3276 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4101 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
3277 4102
3278 EV_FREQUENT_CHECK; 4103 EV_FREQUENT_CHECK;
3279 4104
3280 ++timercnt; 4105 ++timercnt;
3281 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4106 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
3282 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4107 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
3283 ANHE_w (timers [ev_active (w)]) = (WT)w; 4108 ANHE_w (timers [ev_active (w)]) = (WT)w;
3284 ANHE_at_cache (timers [ev_active (w)]); 4109 ANHE_at_cache (timers [ev_active (w)]);
3285 upheap (timers, ev_active (w)); 4110 upheap (timers, ev_active (w));
3286 4111
3287 EV_FREQUENT_CHECK; 4112 EV_FREQUENT_CHECK;
3288 4113
3289 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4114 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
3290} 4115}
3291 4116
3292void noinline 4117ecb_noinline
4118void
3293ev_timer_stop (EV_P_ ev_timer *w) 4119ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
3294{ 4120{
3295 clear_pending (EV_A_ (W)w); 4121 clear_pending (EV_A_ (W)w);
3296 if (expect_false (!ev_is_active (w))) 4122 if (ecb_expect_false (!ev_is_active (w)))
3297 return; 4123 return;
3298 4124
3299 EV_FREQUENT_CHECK; 4125 EV_FREQUENT_CHECK;
3300 4126
3301 { 4127 {
… …
3303 4129
3304 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4130 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
3305 4131
3306 --timercnt; 4132 --timercnt;
3307 4133
3308 if (expect_true (active < timercnt + HEAP0)) 4134 if (ecb_expect_true (active < timercnt + HEAP0))
3309 { 4135 {
3310 timers [active] = timers [timercnt + HEAP0]; 4136 timers [active] = timers [timercnt + HEAP0];
3311 adjustheap (timers, timercnt, active); 4137 adjustheap (timers, timercnt, active);
3312 } 4138 }
3313 } 4139 }
… …
3317 ev_stop (EV_A_ (W)w); 4143 ev_stop (EV_A_ (W)w);
3318 4144
3319 EV_FREQUENT_CHECK; 4145 EV_FREQUENT_CHECK;
3320} 4146}
3321 4147
3322void noinline 4148ecb_noinline
4149void
3323ev_timer_again (EV_P_ ev_timer *w) 4150ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
3324{ 4151{
3325 EV_FREQUENT_CHECK; 4152 EV_FREQUENT_CHECK;
3326 4153
3327 clear_pending (EV_A_ (W)w); 4154 clear_pending (EV_A_ (W)w);
3328 4155
… …
3345 4172
3346 EV_FREQUENT_CHECK; 4173 EV_FREQUENT_CHECK;
3347} 4174}
3348 4175
3349ev_tstamp 4176ev_tstamp
3350ev_timer_remaining (EV_P_ ev_timer *w) 4177ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
3351{ 4178{
3352 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4179 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3353} 4180}
3354 4181
3355#if EV_PERIODIC_ENABLE 4182#if EV_PERIODIC_ENABLE
3356void noinline 4183ecb_noinline
4184void
3357ev_periodic_start (EV_P_ ev_periodic *w) 4185ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
3358{ 4186{
3359 if (expect_false (ev_is_active (w))) 4187 if (ecb_expect_false (ev_is_active (w)))
3360 return; 4188 return;
3361 4189
3362 if (w->reschedule_cb) 4190 if (w->reschedule_cb)
3363 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4191 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
3364 else if (w->interval) 4192 else if (w->interval)
… …
3371 4199
3372 EV_FREQUENT_CHECK; 4200 EV_FREQUENT_CHECK;
3373 4201
3374 ++periodiccnt; 4202 ++periodiccnt;
3375 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4203 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
3376 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4204 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
3377 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4205 ANHE_w (periodics [ev_active (w)]) = (WT)w;
3378 ANHE_at_cache (periodics [ev_active (w)]); 4206 ANHE_at_cache (periodics [ev_active (w)]);
3379 upheap (periodics, ev_active (w)); 4207 upheap (periodics, ev_active (w));
3380 4208
3381 EV_FREQUENT_CHECK; 4209 EV_FREQUENT_CHECK;
3382 4210
3383 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4211 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
3384} 4212}
3385 4213
3386void noinline 4214ecb_noinline
4215void
3387ev_periodic_stop (EV_P_ ev_periodic *w) 4216ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
3388{ 4217{
3389 clear_pending (EV_A_ (W)w); 4218 clear_pending (EV_A_ (W)w);
3390 if (expect_false (!ev_is_active (w))) 4219 if (ecb_expect_false (!ev_is_active (w)))
3391 return; 4220 return;
3392 4221
3393 EV_FREQUENT_CHECK; 4222 EV_FREQUENT_CHECK;
3394 4223
3395 { 4224 {
… …
3397 4226
3398 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4227 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
3399 4228
3400 --periodiccnt; 4229 --periodiccnt;
3401 4230
3402 if (expect_true (active < periodiccnt + HEAP0)) 4231 if (ecb_expect_true (active < periodiccnt + HEAP0))
3403 { 4232 {
3404 periodics [active] = periodics [periodiccnt + HEAP0]; 4233 periodics [active] = periodics [periodiccnt + HEAP0];
3405 adjustheap (periodics, periodiccnt, active); 4234 adjustheap (periodics, periodiccnt, active);
3406 } 4235 }
3407 } 4236 }
… …
3409 ev_stop (EV_A_ (W)w); 4238 ev_stop (EV_A_ (W)w);
3410 4239
3411 EV_FREQUENT_CHECK; 4240 EV_FREQUENT_CHECK;
3412} 4241}
3413 4242
3414void noinline 4243ecb_noinline
4244void
3415ev_periodic_again (EV_P_ ev_periodic *w) 4245ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
3416{ 4246{
3417 /* TODO: use adjustheap and recalculation */ 4247 /* TODO: use adjustheap and recalculation */
3418 ev_periodic_stop (EV_A_ w); 4248 ev_periodic_stop (EV_A_ w);
3419 ev_periodic_start (EV_A_ w); 4249 ev_periodic_start (EV_A_ w);
3420} 4250}
… …
3424# define SA_RESTART 0 4254# define SA_RESTART 0
3425#endif 4255#endif
3426 4256
3427#if EV_SIGNAL_ENABLE 4257#if EV_SIGNAL_ENABLE
3428 4258
3429void noinline 4259ecb_noinline
4260void
3430ev_signal_start (EV_P_ ev_signal *w) 4261ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
3431{ 4262{
3432 if (expect_false (ev_is_active (w))) 4263 if (ecb_expect_false (ev_is_active (w)))
3433 return; 4264 return;
3434 4265
3435 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4266 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
3436 4267
3437#if EV_MULTIPLICITY 4268#if EV_MULTIPLICITY
3438 assert (("libev: a signal must not be attached to two different loops", 4269 assert (("libev: a signal must not be attached to two different loops",
3439 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4270 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3440 4271
3441 signals [w->signum - 1].loop = EV_A; 4272 signals [w->signum - 1].loop = EV_A;
4273 ECB_MEMORY_FENCE_RELEASE;
3442#endif 4274#endif
3443 4275
3444 EV_FREQUENT_CHECK; 4276 EV_FREQUENT_CHECK;
3445 4277
3446#if EV_USE_SIGNALFD 4278#if EV_USE_SIGNALFD
… …
3505 } 4337 }
3506 4338
3507 EV_FREQUENT_CHECK; 4339 EV_FREQUENT_CHECK;
3508} 4340}
3509 4341
3510void noinline 4342ecb_noinline
4343void
3511ev_signal_stop (EV_P_ ev_signal *w) 4344ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
3512{ 4345{
3513 clear_pending (EV_A_ (W)w); 4346 clear_pending (EV_A_ (W)w);
3514 if (expect_false (!ev_is_active (w))) 4347 if (ecb_expect_false (!ev_is_active (w)))
3515 return; 4348 return;
3516 4349
3517 EV_FREQUENT_CHECK; 4350 EV_FREQUENT_CHECK;
3518 4351
3519 wlist_del (&signals [w->signum - 1].head, (WL)w); 4352 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
3547#endif 4380#endif
3548 4381
3549#if EV_CHILD_ENABLE 4382#if EV_CHILD_ENABLE
3550 4383
3551void 4384void
3552ev_child_start (EV_P_ ev_child *w) 4385ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
3553{ 4386{
3554#if EV_MULTIPLICITY 4387#if EV_MULTIPLICITY
3555 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4388 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3556#endif 4389#endif
3557 if (expect_false (ev_is_active (w))) 4390 if (ecb_expect_false (ev_is_active (w)))
3558 return; 4391 return;
3559 4392
3560 EV_FREQUENT_CHECK; 4393 EV_FREQUENT_CHECK;
3561 4394
3562 ev_start (EV_A_ (W)w, 1); 4395 ev_start (EV_A_ (W)w, 1);
… …
3564 4397
3565 EV_FREQUENT_CHECK; 4398 EV_FREQUENT_CHECK;
3566} 4399}
3567 4400
3568void 4401void
3569ev_child_stop (EV_P_ ev_child *w) 4402ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
3570{ 4403{
3571 clear_pending (EV_A_ (W)w); 4404 clear_pending (EV_A_ (W)w);
3572 if (expect_false (!ev_is_active (w))) 4405 if (ecb_expect_false (!ev_is_active (w)))
3573 return; 4406 return;
3574 4407
3575 EV_FREQUENT_CHECK; 4408 EV_FREQUENT_CHECK;
3576 4409
3577 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); 4410 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
… …
3591 4424
3592#define DEF_STAT_INTERVAL 5.0074891 4425#define DEF_STAT_INTERVAL 5.0074891
3593#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4426#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3594#define MIN_STAT_INTERVAL 0.1074891 4427#define MIN_STAT_INTERVAL 0.1074891
3595 4428
3596static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4429ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
3597 4430
3598#if EV_USE_INOTIFY 4431#if EV_USE_INOTIFY
3599 4432
3600/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4433/* 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) 4434# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3602 4435
3603static void noinline 4436ecb_noinline
4437static void
3604infy_add (EV_P_ ev_stat *w) 4438infy_add (EV_P_ ev_stat *w)
3605{ 4439{
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); 4440 w->wd = inotify_add_watch (fs_fd, w->path,
4441 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4442 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4443 | IN_DONT_FOLLOW | IN_MASK_ADD);
3607 4444
3608 if (w->wd >= 0) 4445 if (w->wd >= 0)
3609 { 4446 {
3610 struct statfs sfs; 4447 struct statfs sfs;
3611 4448
… …
3615 4452
3616 if (!fs_2625) 4453 if (!fs_2625)
3617 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4454 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3618 else if (!statfs (w->path, &sfs) 4455 else if (!statfs (w->path, &sfs)
3619 && (sfs.f_type == 0x1373 /* devfs */ 4456 && (sfs.f_type == 0x1373 /* devfs */
4457 || sfs.f_type == 0x4006 /* fat */
4458 || sfs.f_type == 0x4d44 /* msdos */
3620 || sfs.f_type == 0xEF53 /* ext2/3 */ 4459 || sfs.f_type == 0xEF53 /* ext2/3 */
4460 || sfs.f_type == 0x72b6 /* jffs2 */
4461 || sfs.f_type == 0x858458f6 /* ramfs */
4462 || sfs.f_type == 0x5346544e /* ntfs */
3621 || sfs.f_type == 0x3153464a /* jfs */ 4463 || sfs.f_type == 0x3153464a /* jfs */
4464 || sfs.f_type == 0x9123683e /* btrfs */
3622 || sfs.f_type == 0x52654973 /* reiser3 */ 4465 || sfs.f_type == 0x52654973 /* reiser3 */
3623 || sfs.f_type == 0x01021994 /* tempfs */ 4466 || sfs.f_type == 0x01021994 /* tmpfs */
3624 || sfs.f_type == 0x58465342 /* xfs */)) 4467 || sfs.f_type == 0x58465342 /* xfs */))
3625 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4468 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3626 else 4469 else
3627 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4470 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3628 } 4471 }
… …
3663 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4506 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3664 ev_timer_again (EV_A_ &w->timer); 4507 ev_timer_again (EV_A_ &w->timer);
3665 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4508 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3666} 4509}
3667 4510
3668static void noinline 4511ecb_noinline
4512static void
3669infy_del (EV_P_ ev_stat *w) 4513infy_del (EV_P_ ev_stat *w)
3670{ 4514{
3671 int slot; 4515 int slot;
3672 int wd = w->wd; 4516 int wd = w->wd;
3673 4517
… …
3680 4524
3681 /* remove this watcher, if others are watching it, they will rearm */ 4525 /* remove this watcher, if others are watching it, they will rearm */
3682 inotify_rm_watch (fs_fd, wd); 4526 inotify_rm_watch (fs_fd, wd);
3683} 4527}
3684 4528
3685static void noinline 4529ecb_noinline
4530static void
3686infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4531infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3687{ 4532{
3688 if (slot < 0) 4533 if (slot < 0)
3689 /* overflow, need to check for all hash slots */ 4534 /* overflow, need to check for all hash slots */
3690 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4535 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3726 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4571 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3727 ofs += sizeof (struct inotify_event) + ev->len; 4572 ofs += sizeof (struct inotify_event) + ev->len;
3728 } 4573 }
3729} 4574}
3730 4575
3731inline_size void ecb_cold 4576inline_size ecb_cold
4577void
3732ev_check_2625 (EV_P) 4578ev_check_2625 (EV_P)
3733{ 4579{
3734 /* kernels < 2.6.25 are borked 4580 /* kernels < 2.6.25 are borked
3735 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4581 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3736 */ 4582 */
… …
3741} 4587}
3742 4588
3743inline_size int 4589inline_size int
3744infy_newfd (void) 4590infy_newfd (void)
3745{ 4591{
3746#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4592#if defined IN_CLOEXEC && defined IN_NONBLOCK
3747 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4593 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3748 if (fd >= 0) 4594 if (fd >= 0)
3749 return fd; 4595 return fd;
3750#endif 4596#endif
3751 return inotify_init (); 4597 return inotify_init ();
… …
3826#else 4672#else
3827# define EV_LSTAT(p,b) lstat (p, b) 4673# define EV_LSTAT(p,b) lstat (p, b)
3828#endif 4674#endif
3829 4675
3830void 4676void
3831ev_stat_stat (EV_P_ ev_stat *w) 4677ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3832{ 4678{
3833 if (lstat (w->path, &w->attr) < 0) 4679 if (lstat (w->path, &w->attr) < 0)
3834 w->attr.st_nlink = 0; 4680 w->attr.st_nlink = 0;
3835 else if (!w->attr.st_nlink) 4681 else if (!w->attr.st_nlink)
3836 w->attr.st_nlink = 1; 4682 w->attr.st_nlink = 1;
3837} 4683}
3838 4684
3839static void noinline 4685ecb_noinline
4686static void
3840stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4687stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3841{ 4688{
3842 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4689 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3843 4690
3844 ev_statdata prev = w->attr; 4691 ev_statdata prev = w->attr;
… …
3875 ev_feed_event (EV_A_ w, EV_STAT); 4722 ev_feed_event (EV_A_ w, EV_STAT);
3876 } 4723 }
3877} 4724}
3878 4725
3879void 4726void
3880ev_stat_start (EV_P_ ev_stat *w) 4727ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3881{ 4728{
3882 if (expect_false (ev_is_active (w))) 4729 if (ecb_expect_false (ev_is_active (w)))
3883 return; 4730 return;
3884 4731
3885 ev_stat_stat (EV_A_ w); 4732 ev_stat_stat (EV_A_ w);
3886 4733
3887 if (w->interval < MIN_STAT_INTERVAL && w->interval) 4734 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
3906 4753
3907 EV_FREQUENT_CHECK; 4754 EV_FREQUENT_CHECK;
3908} 4755}
3909 4756
3910void 4757void
3911ev_stat_stop (EV_P_ ev_stat *w) 4758ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3912{ 4759{
3913 clear_pending (EV_A_ (W)w); 4760 clear_pending (EV_A_ (W)w);
3914 if (expect_false (!ev_is_active (w))) 4761 if (ecb_expect_false (!ev_is_active (w)))
3915 return; 4762 return;
3916 4763
3917 EV_FREQUENT_CHECK; 4764 EV_FREQUENT_CHECK;
3918 4765
3919#if EV_USE_INOTIFY 4766#if EV_USE_INOTIFY
… …
3932} 4779}
3933#endif 4780#endif
3934 4781
3935#if EV_IDLE_ENABLE 4782#if EV_IDLE_ENABLE
3936void 4783void
3937ev_idle_start (EV_P_ ev_idle *w) 4784ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3938{ 4785{
3939 if (expect_false (ev_is_active (w))) 4786 if (ecb_expect_false (ev_is_active (w)))
3940 return; 4787 return;
3941 4788
3942 pri_adjust (EV_A_ (W)w); 4789 pri_adjust (EV_A_ (W)w);
3943 4790
3944 EV_FREQUENT_CHECK; 4791 EV_FREQUENT_CHECK;
… …
3947 int active = ++idlecnt [ABSPRI (w)]; 4794 int active = ++idlecnt [ABSPRI (w)];
3948 4795
3949 ++idleall; 4796 ++idleall;
3950 ev_start (EV_A_ (W)w, active); 4797 ev_start (EV_A_ (W)w, active);
3951 4798
3952 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4799 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
3953 idles [ABSPRI (w)][active - 1] = w; 4800 idles [ABSPRI (w)][active - 1] = w;
3954 } 4801 }
3955 4802
3956 EV_FREQUENT_CHECK; 4803 EV_FREQUENT_CHECK;
3957} 4804}
3958 4805
3959void 4806void
3960ev_idle_stop (EV_P_ ev_idle *w) 4807ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3961{ 4808{
3962 clear_pending (EV_A_ (W)w); 4809 clear_pending (EV_A_ (W)w);
3963 if (expect_false (!ev_is_active (w))) 4810 if (ecb_expect_false (!ev_is_active (w)))
3964 return; 4811 return;
3965 4812
3966 EV_FREQUENT_CHECK; 4813 EV_FREQUENT_CHECK;
3967 4814
3968 { 4815 {
… …
3979} 4826}
3980#endif 4827#endif
3981 4828
3982#if EV_PREPARE_ENABLE 4829#if EV_PREPARE_ENABLE
3983void 4830void
3984ev_prepare_start (EV_P_ ev_prepare *w) 4831ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3985{ 4832{
3986 if (expect_false (ev_is_active (w))) 4833 if (ecb_expect_false (ev_is_active (w)))
3987 return; 4834 return;
3988 4835
3989 EV_FREQUENT_CHECK; 4836 EV_FREQUENT_CHECK;
3990 4837
3991 ev_start (EV_A_ (W)w, ++preparecnt); 4838 ev_start (EV_A_ (W)w, ++preparecnt);
3992 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4839 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3993 prepares [preparecnt - 1] = w; 4840 prepares [preparecnt - 1] = w;
3994 4841
3995 EV_FREQUENT_CHECK; 4842 EV_FREQUENT_CHECK;
3996} 4843}
3997 4844
3998void 4845void
3999ev_prepare_stop (EV_P_ ev_prepare *w) 4846ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
4000{ 4847{
4001 clear_pending (EV_A_ (W)w); 4848 clear_pending (EV_A_ (W)w);
4002 if (expect_false (!ev_is_active (w))) 4849 if (ecb_expect_false (!ev_is_active (w)))
4003 return; 4850 return;
4004 4851
4005 EV_FREQUENT_CHECK; 4852 EV_FREQUENT_CHECK;
4006 4853
4007 { 4854 {
… …
4017} 4864}
4018#endif 4865#endif
4019 4866
4020#if EV_CHECK_ENABLE 4867#if EV_CHECK_ENABLE
4021void 4868void
4022ev_check_start (EV_P_ ev_check *w) 4869ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
4023{ 4870{
4024 if (expect_false (ev_is_active (w))) 4871 if (ecb_expect_false (ev_is_active (w)))
4025 return; 4872 return;
4026 4873
4027 EV_FREQUENT_CHECK; 4874 EV_FREQUENT_CHECK;
4028 4875
4029 ev_start (EV_A_ (W)w, ++checkcnt); 4876 ev_start (EV_A_ (W)w, ++checkcnt);
4030 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4877 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
4031 checks [checkcnt - 1] = w; 4878 checks [checkcnt - 1] = w;
4032 4879
4033 EV_FREQUENT_CHECK; 4880 EV_FREQUENT_CHECK;
4034} 4881}
4035 4882
4036void 4883void
4037ev_check_stop (EV_P_ ev_check *w) 4884ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
4038{ 4885{
4039 clear_pending (EV_A_ (W)w); 4886 clear_pending (EV_A_ (W)w);
4040 if (expect_false (!ev_is_active (w))) 4887 if (ecb_expect_false (!ev_is_active (w)))
4041 return; 4888 return;
4042 4889
4043 EV_FREQUENT_CHECK; 4890 EV_FREQUENT_CHECK;
4044 4891
4045 { 4892 {
… …
4054 EV_FREQUENT_CHECK; 4901 EV_FREQUENT_CHECK;
4055} 4902}
4056#endif 4903#endif
4057 4904
4058#if EV_EMBED_ENABLE 4905#if EV_EMBED_ENABLE
4059void noinline 4906ecb_noinline
4907void
4060ev_embed_sweep (EV_P_ ev_embed *w) 4908ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
4061{ 4909{
4062 ev_run (w->other, EVRUN_NOWAIT); 4910 ev_run (w->other, EVRUN_NOWAIT);
4063} 4911}
4064 4912
4065static void 4913static void
… …
4113 ev_idle_stop (EV_A_ idle); 4961 ev_idle_stop (EV_A_ idle);
4114} 4962}
4115#endif 4963#endif
4116 4964
4117void 4965void
4118ev_embed_start (EV_P_ ev_embed *w) 4966ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
4119{ 4967{
4120 if (expect_false (ev_is_active (w))) 4968 if (ecb_expect_false (ev_is_active (w)))
4121 return; 4969 return;
4122 4970
4123 { 4971 {
4124 EV_P = w->other; 4972 EV_P = w->other;
4125 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4973 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
… …
4144 4992
4145 EV_FREQUENT_CHECK; 4993 EV_FREQUENT_CHECK;
4146} 4994}
4147 4995
4148void 4996void
4149ev_embed_stop (EV_P_ ev_embed *w) 4997ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
4150{ 4998{
4151 clear_pending (EV_A_ (W)w); 4999 clear_pending (EV_A_ (W)w);
4152 if (expect_false (!ev_is_active (w))) 5000 if (ecb_expect_false (!ev_is_active (w)))
4153 return; 5001 return;
4154 5002
4155 EV_FREQUENT_CHECK; 5003 EV_FREQUENT_CHECK;
4156 5004
4157 ev_io_stop (EV_A_ &w->io); 5005 ev_io_stop (EV_A_ &w->io);
… …
4164} 5012}
4165#endif 5013#endif
4166 5014
4167#if EV_FORK_ENABLE 5015#if EV_FORK_ENABLE
4168void 5016void
4169ev_fork_start (EV_P_ ev_fork *w) 5017ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
4170{ 5018{
4171 if (expect_false (ev_is_active (w))) 5019 if (ecb_expect_false (ev_is_active (w)))
4172 return; 5020 return;
4173 5021
4174 EV_FREQUENT_CHECK; 5022 EV_FREQUENT_CHECK;
4175 5023
4176 ev_start (EV_A_ (W)w, ++forkcnt); 5024 ev_start (EV_A_ (W)w, ++forkcnt);
4177 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5025 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
4178 forks [forkcnt - 1] = w; 5026 forks [forkcnt - 1] = w;
4179 5027
4180 EV_FREQUENT_CHECK; 5028 EV_FREQUENT_CHECK;
4181} 5029}
4182 5030
4183void 5031void
4184ev_fork_stop (EV_P_ ev_fork *w) 5032ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
4185{ 5033{
4186 clear_pending (EV_A_ (W)w); 5034 clear_pending (EV_A_ (W)w);
4187 if (expect_false (!ev_is_active (w))) 5035 if (ecb_expect_false (!ev_is_active (w)))
4188 return; 5036 return;
4189 5037
4190 EV_FREQUENT_CHECK; 5038 EV_FREQUENT_CHECK;
4191 5039
4192 { 5040 {
… …
4202} 5050}
4203#endif 5051#endif
4204 5052
4205#if EV_CLEANUP_ENABLE 5053#if EV_CLEANUP_ENABLE
4206void 5054void
4207ev_cleanup_start (EV_P_ ev_cleanup *w) 5055ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4208{ 5056{
4209 if (expect_false (ev_is_active (w))) 5057 if (ecb_expect_false (ev_is_active (w)))
4210 return; 5058 return;
4211 5059
4212 EV_FREQUENT_CHECK; 5060 EV_FREQUENT_CHECK;
4213 5061
4214 ev_start (EV_A_ (W)w, ++cleanupcnt); 5062 ev_start (EV_A_ (W)w, ++cleanupcnt);
4215 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 5063 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
4216 cleanups [cleanupcnt - 1] = w; 5064 cleanups [cleanupcnt - 1] = w;
4217 5065
4218 /* cleanup watchers should never keep a refcount on the loop */ 5066 /* cleanup watchers should never keep a refcount on the loop */
4219 ev_unref (EV_A); 5067 ev_unref (EV_A);
4220 EV_FREQUENT_CHECK; 5068 EV_FREQUENT_CHECK;
4221} 5069}
4222 5070
4223void 5071void
4224ev_cleanup_stop (EV_P_ ev_cleanup *w) 5072ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4225{ 5073{
4226 clear_pending (EV_A_ (W)w); 5074 clear_pending (EV_A_ (W)w);
4227 if (expect_false (!ev_is_active (w))) 5075 if (ecb_expect_false (!ev_is_active (w)))
4228 return; 5076 return;
4229 5077
4230 EV_FREQUENT_CHECK; 5078 EV_FREQUENT_CHECK;
4231 ev_ref (EV_A); 5079 ev_ref (EV_A);
4232 5080
… …
4243} 5091}
4244#endif 5092#endif
4245 5093
4246#if EV_ASYNC_ENABLE 5094#if EV_ASYNC_ENABLE
4247void 5095void
4248ev_async_start (EV_P_ ev_async *w) 5096ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4249{ 5097{
4250 if (expect_false (ev_is_active (w))) 5098 if (ecb_expect_false (ev_is_active (w)))
4251 return; 5099 return;
4252 5100
4253 w->sent = 0; 5101 w->sent = 0;
4254 5102
4255 evpipe_init (EV_A); 5103 evpipe_init (EV_A);
4256 5104
4257 EV_FREQUENT_CHECK; 5105 EV_FREQUENT_CHECK;
4258 5106
4259 ev_start (EV_A_ (W)w, ++asynccnt); 5107 ev_start (EV_A_ (W)w, ++asynccnt);
4260 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5108 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
4261 asyncs [asynccnt - 1] = w; 5109 asyncs [asynccnt - 1] = w;
4262 5110
4263 EV_FREQUENT_CHECK; 5111 EV_FREQUENT_CHECK;
4264} 5112}
4265 5113
4266void 5114void
4267ev_async_stop (EV_P_ ev_async *w) 5115ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4268{ 5116{
4269 clear_pending (EV_A_ (W)w); 5117 clear_pending (EV_A_ (W)w);
4270 if (expect_false (!ev_is_active (w))) 5118 if (ecb_expect_false (!ev_is_active (w)))
4271 return; 5119 return;
4272 5120
4273 EV_FREQUENT_CHECK; 5121 EV_FREQUENT_CHECK;
4274 5122
4275 { 5123 {
… …
4283 5131
4284 EV_FREQUENT_CHECK; 5132 EV_FREQUENT_CHECK;
4285} 5133}
4286 5134
4287void 5135void
4288ev_async_send (EV_P_ ev_async *w) 5136ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
4289{ 5137{
4290 w->sent = 1; 5138 w->sent = 1;
4291 evpipe_write (EV_A_ &async_pending); 5139 evpipe_write (EV_A_ &async_pending);
4292} 5140}
4293#endif 5141#endif
… …
4330 5178
4331 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5179 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
4332} 5180}
4333 5181
4334void 5182void
4335ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5183ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
4336{ 5184{
4337 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5185 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 5186
4345 once->cb = cb; 5187 once->cb = cb;
4346 once->arg = arg; 5188 once->arg = arg;
4347 5189
4348 ev_init (&once->io, once_cb_io); 5190 ev_init (&once->io, once_cb_io);
… …
4361} 5203}
4362 5204
4363/*****************************************************************************/ 5205/*****************************************************************************/
4364 5206
4365#if EV_WALK_ENABLE 5207#if EV_WALK_ENABLE
4366void ecb_cold 5208ecb_cold
5209void
4367ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5210ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
4368{ 5211{
4369 int i, j; 5212 int i, j;
4370 ev_watcher_list *wl, *wn; 5213 ev_watcher_list *wl, *wn;
4371 5214
4372 if (types & (EV_IO | EV_EMBED)) 5215 if (types & (EV_IO | EV_EMBED))

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