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Comparing libev/ev.c (file contents):
Revision 1.409 by root, Sat Feb 4 15:17:34 2012 UTC vs.
Revision 1.507 by root, Thu Jul 11 08:22:54 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
… …
181 200
182#ifdef EV_H 201#ifdef EV_H
183# include EV_H 202# include EV_H
184#else 203#else
185# include "ev.h" 204# include "ev.h"
205#endif
206
207#if EV_NO_THREADS
208# undef EV_NO_SMP
209# define EV_NO_SMP 1
210# undef ECB_NO_THREADS
211# define ECB_NO_THREADS 1
212#endif
213#if EV_NO_SMP
214# undef EV_NO_SMP
215# define ECB_NO_SMP 1
186#endif 216#endif
187 217
188#ifndef _WIN32 218#ifndef _WIN32
189# include <sys/time.h> 219# include <sys/time.h>
190# include <sys/wait.h> 220# include <sys/wait.h>
191# include <unistd.h> 221# include <unistd.h>
192#else 222#else
193# include <io.h> 223# include <io.h>
194# define WIN32_LEAN_AND_MEAN 224# define WIN32_LEAN_AND_MEAN
225# include <winsock2.h>
195# include <windows.h> 226# include <windows.h>
196# ifndef EV_SELECT_IS_WINSOCKET 227# ifndef EV_SELECT_IS_WINSOCKET
197# define EV_SELECT_IS_WINSOCKET 1 228# define EV_SELECT_IS_WINSOCKET 1
198# endif 229# endif
199# undef EV_AVOID_STDIO 230# undef EV_AVOID_STDIO
200#endif 231#endif
201 232
202/* OS X, in its infinite idiocy, actually HARDCODES
203 * a limit of 1024 into their select. Where people have brains,
204 * OS X engineers apparently have a vacuum. Or maybe they were
205 * ordered to have a vacuum, or they do anything for money.
206 * This might help. Or not.
207 */
208#define _DARWIN_UNLIMITED_SELECT 1
209
210/* 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 */
211 234
212/* try to deduce the maximum number of signals on this platform */ 235/* try to deduce the maximum number of signals on this platform */
213#if defined (EV_NSIG) 236#if defined EV_NSIG
214/* use what's provided */ 237/* use what's provided */
215#elif defined (NSIG) 238#elif defined NSIG
216# define EV_NSIG (NSIG) 239# define EV_NSIG (NSIG)
217#elif defined(_NSIG) 240#elif defined _NSIG
218# define EV_NSIG (_NSIG) 241# define EV_NSIG (_NSIG)
219#elif defined (SIGMAX) 242#elif defined SIGMAX
220# define EV_NSIG (SIGMAX+1) 243# define EV_NSIG (SIGMAX+1)
221#elif defined (SIG_MAX) 244#elif defined SIG_MAX
222# define EV_NSIG (SIG_MAX+1) 245# define EV_NSIG (SIG_MAX+1)
223#elif defined (_SIG_MAX) 246#elif defined _SIG_MAX
224# define EV_NSIG (_SIG_MAX+1) 247# define EV_NSIG (_SIG_MAX+1)
225#elif defined (MAXSIG) 248#elif defined MAXSIG
226# define EV_NSIG (MAXSIG+1) 249# define EV_NSIG (MAXSIG+1)
227#elif defined (MAX_SIG) 250#elif defined MAX_SIG
228# define EV_NSIG (MAX_SIG+1) 251# define EV_NSIG (MAX_SIG+1)
229#elif defined (SIGARRAYSIZE) 252#elif defined SIGARRAYSIZE
230# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 253# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
231#elif defined (_sys_nsig) 254#elif defined _sys_nsig
232# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 255# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
233#else 256#else
234# error "unable to find value for NSIG, please report" 257# define EV_NSIG (8 * sizeof (sigset_t) + 1)
235/* to make it compile regardless, just remove the above line, */
236/* but consider reporting it, too! :) */
237# define EV_NSIG 65
238#endif 258#endif
239 259
240#ifndef EV_USE_FLOOR 260#ifndef EV_USE_FLOOR
241# define EV_USE_FLOOR 0 261# define EV_USE_FLOOR 0
242#endif 262#endif
243 263
244#ifndef EV_USE_CLOCK_SYSCALL 264#ifndef EV_USE_CLOCK_SYSCALL
245# if __linux && __GLIBC__ >= 2 265# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
246# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 266# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
247# else 267# else
248# define EV_USE_CLOCK_SYSCALL 0 268# define EV_USE_CLOCK_SYSCALL 0
249# endif 269# endif
250#endif 270#endif
251 271
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
252#ifndef EV_USE_MONOTONIC 281#ifndef EV_USE_MONOTONIC
253# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 282# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
254# define EV_USE_MONOTONIC EV_FEATURE_OS 283# define EV_USE_MONOTONIC EV_FEATURE_OS
255# else 284# else
256# define EV_USE_MONOTONIC 0 285# define EV_USE_MONOTONIC 0
257# endif 286# endif
258#endif 287#endif
… …
295 324
296#ifndef EV_USE_PORT 325#ifndef EV_USE_PORT
297# define EV_USE_PORT 0 326# define EV_USE_PORT 0
298#endif 327#endif
299 328
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
300#ifndef EV_USE_INOTIFY 345#ifndef EV_USE_INOTIFY
301# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 346# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
302# define EV_USE_INOTIFY EV_FEATURE_OS 347# define EV_USE_INOTIFY EV_FEATURE_OS
303# else 348# else
304# define EV_USE_INOTIFY 0 349# define EV_USE_INOTIFY 0
… …
345 390
346#ifndef EV_HEAP_CACHE_AT 391#ifndef EV_HEAP_CACHE_AT
347# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 392# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
348#endif 393#endif
349 394
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
350/* 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, */
351/* which makes programs even slower. might work on other unices, too. */ 412/* which makes programs even slower. might work on other unices, too. */
352#if EV_USE_CLOCK_SYSCALL 413#if EV_USE_CLOCK_SYSCALL
353# include <syscall.h> 414# include <sys/syscall.h>
354# ifdef SYS_clock_gettime 415# ifdef SYS_clock_gettime
355# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 416# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
356# undef EV_USE_MONOTONIC 417# undef EV_USE_MONOTONIC
357# define EV_USE_MONOTONIC 1 418# define EV_USE_MONOTONIC 1
419# define EV_NEED_SYSCALL 1
358# else 420# else
359# undef EV_USE_CLOCK_SYSCALL 421# undef EV_USE_CLOCK_SYSCALL
360# define EV_USE_CLOCK_SYSCALL 0 422# define EV_USE_CLOCK_SYSCALL 0
361# endif 423# endif
362#endif 424#endif
363 425
364/* 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 */
365 427
366#ifdef _AIX
367/* AIX has a completely broken poll.h header */
368# undef EV_USE_POLL
369# define EV_USE_POLL 0
370#endif
371
372#ifndef CLOCK_MONOTONIC 428#ifndef CLOCK_MONOTONIC
373# undef EV_USE_MONOTONIC 429# undef EV_USE_MONOTONIC
374# define EV_USE_MONOTONIC 0 430# define EV_USE_MONOTONIC 0
375#endif 431#endif
376 432
… …
384# define EV_USE_INOTIFY 0 440# define EV_USE_INOTIFY 0
385#endif 441#endif
386 442
387#if !EV_USE_NANOSLEEP 443#if !EV_USE_NANOSLEEP
388/* 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 */
389# if !defined(_WIN32) && !defined(__hpux) 445# if !defined _WIN32 && !defined __hpux
390# 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
391# endif 472# endif
392#endif 473#endif
393 474
394#if EV_USE_INOTIFY 475#if EV_USE_INOTIFY
395# include <sys/statfs.h> 476# include <sys/statfs.h>
… …
397/* 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 */
398# ifndef IN_DONT_FOLLOW 479# ifndef IN_DONT_FOLLOW
399# undef EV_USE_INOTIFY 480# undef EV_USE_INOTIFY
400# define EV_USE_INOTIFY 0 481# define EV_USE_INOTIFY 0
401# endif 482# endif
402#endif
403
404#if EV_SELECT_IS_WINSOCKET
405# include <winsock.h>
406#endif 483#endif
407 484
408#if EV_USE_EVENTFD 485#if EV_USE_EVENTFD
409/* 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 */
410# include <stdint.h> 487# include <stdint.h>
… …
441 uint32_t ssi_signo; 518 uint32_t ssi_signo;
442 char pad[128 - sizeof (uint32_t)]; 519 char pad[128 - sizeof (uint32_t)];
443}; 520};
444#endif 521#endif
445 522
446/**/ 523/*****************************************************************************/
447 524
448#if EV_VERIFY >= 3 525#if EV_VERIFY >= 3
449# define EV_FREQUENT_CHECK ev_verify (EV_A) 526# define EV_FREQUENT_CHECK ev_verify (EV_A)
450#else 527#else
451# define EV_FREQUENT_CHECK do { } while (0) 528# define EV_FREQUENT_CHECK do { } while (0)
… …
456 * This value is good at least till the year 4000. 533 * This value is good at least till the year 4000.
457 */ 534 */
458#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */ 535#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
459/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */ 536/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
460 537
461#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) */
462#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) */
463 540
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_MS(a) a * 1e3 + 0.9999
550#define EV_TS_FROM_USEC(us) us * 1e-6
464#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)
465#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)
466 555
467/* 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 */
468/* ECB.H BEGIN */ 557/* ECB.H BEGIN */
469/* 558/*
470 * libecb - http://software.schmorp.de/pkg/libecb 559 * libecb - http://software.schmorp.de/pkg/libecb
471 * 560 *
472 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de> 561 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
473 * Copyright (©) 2011 Emanuele Giaquinta 562 * Copyright (©) 2011 Emanuele Giaquinta
474 * All rights reserved. 563 * All rights reserved.
475 * 564 *
476 * 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-
477 * tion, are permitted provided that the following conditions are met: 566 * tion, are permitted provided that the following conditions are met:
… …
491 * 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;
492 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 581 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
493 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- 582 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
494 * 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
495 * 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.
496 */ 596 */
497 597
498#ifndef ECB_H 598#ifndef ECB_H
499#define ECB_H 599#define ECB_H
600
601/* 16 bits major, 16 bits minor */
602#define ECB_VERSION 0x00010006
500 603
501#ifdef _WIN32 604#ifdef _WIN32
502 typedef signed char int8_t; 605 typedef signed char int8_t;
503 typedef unsigned char uint8_t; 606 typedef unsigned char uint8_t;
504 typedef signed short int16_t; 607 typedef signed short int16_t;
… …
510 typedef unsigned long long uint64_t; 613 typedef unsigned long long uint64_t;
511 #else /* _MSC_VER || __BORLANDC__ */ 614 #else /* _MSC_VER || __BORLANDC__ */
512 typedef signed __int64 int64_t; 615 typedef signed __int64 int64_t;
513 typedef unsigned __int64 uint64_t; 616 typedef unsigned __int64 uint64_t;
514 #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
515#else 627#else
516 #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
517#endif 646#endif
518 647
519/* many compilers define _GNUC_ to some versions but then only implement 648/* many compilers define _GNUC_ to some versions but then only implement
520 * what their idiot authors think are the "more important" extensions, 649 * what their idiot authors think are the "more important" extensions,
521 * causing enormous grief in return for some better fake benchmark numbers. 650 * causing enormous grief in return for some better fake benchmark numbers.
522 * or so. 651 * or so.
523 * 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
524 * 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.
525 */ 654 */
526#ifndef ECB_GCC_VERSION
527 #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__
528 #define ECB_GCC_VERSION(major,minor) 0 656 #define ECB_GCC_VERSION(major,minor) 0
529 #else 657#else
530 #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)))
531 #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
532#endif 700#endif
533 701
534/*****************************************************************************/ 702/*****************************************************************************/
535 703
536/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ 704/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
537/* 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 */
538 706
539#if ECB_NO_THREADS || ECB_NO_SMP 707#if ECB_NO_THREADS
708 #define ECB_NO_SMP 1
709#endif
710
711#if ECB_NO_SMP
540 #define ECB_MEMORY_FENCE do { } while (0) 712 #define ECB_MEMORY_FENCE do { } while (0)
541#endif 713#endif
542 714
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
543#ifndef ECB_MEMORY_FENCE 724#ifndef ECB_MEMORY_FENCE
544 #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")
545 #if __i386 || __i386__ 727 #if __i386 || __i386__
546 #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")
547 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */ 729 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
548 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */ 730 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
549 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__ 731 #elif ECB_GCC_AMD64
550 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 732 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
551 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory") 733 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
552 #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")
553 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 735 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
554 #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 */
555 #elif defined(__ARM_ARCH_6__ ) || defined(__ARM_ARCH_6J__ ) \ 744 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
556 || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6ZK__) 745 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
746 || defined __ARM_ARCH_6T2__
557 #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")
558 #elif defined(__ARM_ARCH_7__ ) || defined(__ARM_ARCH_7A__ ) \ 748 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
559 || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7R__ ) 749 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
560 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") 750 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
561 #elif __sparc || __sparc__ 751 #elif __aarch64__
752 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
753 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
562 #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")
563 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") 755 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
564 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") 756 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
565 #elif defined(__s390__) || defined(__s390x__) 757 #elif defined __s390__ || defined __s390x__
566 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") 758 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
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__
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")
567 #endif 776 #endif
568 #endif 777 #endif
569#endif 778#endif
570 779
571#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
572 #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER) || defined(__clang__) 795 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
573 #define ECB_MEMORY_FENCE __sync_synchronize () 796 #define ECB_MEMORY_FENCE __sync_synchronize ()
574 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */ 797 #elif _MSC_VER >= 1500 /* VC++ 2008 */
575 /*#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()
576 #elif _MSC_VER >= 1400 /* VC++ 2005 */ 803 #elif _MSC_VER >= 1400 /* VC++ 2005 */
577 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) 804 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
578 #define ECB_MEMORY_FENCE _ReadWriteBarrier () 805 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
579 #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 */
580 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () 807 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
581 #elif defined(_WIN32) 808 #elif defined _WIN32
582 #include <WinNT.h> 809 #include <WinNT.h>
583 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ 810 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
584 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 811 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
585 #include <mbarrier.h> 812 #include <mbarrier.h>
586 #define ECB_MEMORY_FENCE __machine_rw_barrier () 813 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
587 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier () 814 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
588 #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 ()
817 #elif __xlC__
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)
589 #endif 830 #endif
590#endif 831#endif
591 832
592#ifndef ECB_MEMORY_FENCE 833#ifndef ECB_MEMORY_FENCE
593 #if !ECB_AVOID_PTHREADS 834 #if !ECB_AVOID_PTHREADS
… …
605 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER; 846 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
606 #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)
607 #endif 848 #endif
608#endif 849#endif
609 850
610#if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE) 851#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
611 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 852 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
612#endif 853#endif
613 854
614#if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE) 855#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
615 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 856 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
616#endif 857#endif
617 858
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
618/*****************************************************************************/ 863/*****************************************************************************/
619 864
620#define ECB_C99 (__STDC_VERSION__ >= 199901L) 865#if ECB_CPP
621
622#if __cplusplus
623 #define ecb_inline static inline 866 #define ecb_inline static inline
624#elif ECB_GCC_VERSION(2,5) 867#elif ECB_GCC_VERSION(2,5)
625 #define ecb_inline static __inline__ 868 #define ecb_inline static __inline__
626#elif ECB_C99 869#elif ECB_C99
627 #define ecb_inline static inline 870 #define ecb_inline static inline
… …
641 884
642#define ECB_CONCAT_(a, b) a ## b 885#define ECB_CONCAT_(a, b) a ## b
643#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) 886#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
644#define ECB_STRINGIFY_(a) # a 887#define ECB_STRINGIFY_(a) # a
645#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))
646 890
647#define ecb_function_ ecb_inline 891#define ecb_function_ ecb_inline
648 892
649#if ECB_GCC_VERSION(3,1) 893#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
650 #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)
651 #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)
652 #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)
653 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) 916 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
654#else 917#else
655 #define ecb_attribute(attrlist)
656 #define ecb_is_constant(expr) 0
657 #define ecb_expect(expr,value) (expr)
658 #define ecb_prefetch(addr,rw,locality) 918 #define ecb_prefetch(addr,rw,locality)
659#endif 919#endif
660 920
661/* no emulation for ecb_decltype */ 921/* no emulation for ecb_decltype */
662#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; };
663 #define ecb_decltype(x) __decltype(x) 925 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
664#elif ECB_GCC_VERSION(3,0) 926#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
665 #define ecb_decltype(x) __typeof(x) 927 #define ecb_decltype(x) __typeof__ (x)
666#endif 928#endif
667 929
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
668#define ecb_noinline ecb_attribute ((__noinline__)) 947 #define ecb_noinline ecb_attribute ((__noinline__))
669#define ecb_noreturn ecb_attribute ((__noreturn__)) 948#endif
949
670#define ecb_unused ecb_attribute ((__unused__)) 950#define ecb_unused ecb_attribute ((__unused__))
671#define ecb_const ecb_attribute ((__const__)) 951#define ecb_const ecb_attribute ((__const__))
672#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
673 965
674#if ECB_GCC_VERSION(4,3) 966#if ECB_GCC_VERSION(4,3)
675 #define ecb_artificial ecb_attribute ((__artificial__)) 967 #define ecb_artificial ecb_attribute ((__artificial__))
676 #define ecb_hot ecb_attribute ((__hot__)) 968 #define ecb_hot ecb_attribute ((__hot__))
677 #define ecb_cold ecb_attribute ((__cold__)) 969 #define ecb_cold ecb_attribute ((__cold__))
… …
689/* for compatibility to the rest of the world */ 981/* for compatibility to the rest of the world */
690#define ecb_likely(expr) ecb_expect_true (expr) 982#define ecb_likely(expr) ecb_expect_true (expr)
691#define ecb_unlikely(expr) ecb_expect_false (expr) 983#define ecb_unlikely(expr) ecb_expect_false (expr)
692 984
693/* count trailing zero bits and count # of one bits */ 985/* count trailing zero bits and count # of one bits */
694#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))
695 /* 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 */
696 #define ecb_ld32(x) (__builtin_clz (x) ^ 31) 991 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
697 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) 992 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
698 #define ecb_ctz32(x) __builtin_ctz (x) 993 #define ecb_ctz32(x) __builtin_ctz (x)
699 #define ecb_ctz64(x) __builtin_ctzll (x) 994 #define ecb_ctz64(x) __builtin_ctzll (x)
700 #define ecb_popcount32(x) __builtin_popcount (x) 995 #define ecb_popcount32(x) __builtin_popcount (x)
701 /* no popcountll */ 996 /* no popcountll */
702#else 997#else
703 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; 998 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
704 ecb_function_ int 999 ecb_function_ ecb_const int
705 ecb_ctz32 (uint32_t x) 1000 ecb_ctz32 (uint32_t x)
706 { 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
707 int r = 0; 1007 int r = 0;
708 1008
709 x &= ~x + 1; /* this isolates the lowest bit */ 1009 x &= ~x + 1; /* this isolates the lowest bit */
710 1010
711#if ECB_branchless_on_i386 1011#if ECB_branchless_on_i386
… …
721 if (x & 0xff00ff00) r += 8; 1021 if (x & 0xff00ff00) r += 8;
722 if (x & 0xffff0000) r += 16; 1022 if (x & 0xffff0000) r += 16;
723#endif 1023#endif
724 1024
725 return r; 1025 return r;
1026#endif
726 } 1027 }
727 1028
728 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; 1029 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
729 ecb_function_ int 1030 ecb_function_ ecb_const int
730 ecb_ctz64 (uint64_t x) 1031 ecb_ctz64 (uint64_t x)
731 { 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
732 int shift = x & 0xffffffffU ? 0 : 32; 1038 int shift = x & 0xffffffff ? 0 : 32;
733 return ecb_ctz32 (x >> shift) + shift; 1039 return ecb_ctz32 (x >> shift) + shift;
1040#endif
734 } 1041 }
735 1042
736 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; 1043 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
737 ecb_function_ int 1044 ecb_function_ ecb_const int
738 ecb_popcount32 (uint32_t x) 1045 ecb_popcount32 (uint32_t x)
739 { 1046 {
740 x -= (x >> 1) & 0x55555555; 1047 x -= (x >> 1) & 0x55555555;
741 x = ((x >> 2) & 0x33333333) + (x & 0x33333333); 1048 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
742 x = ((x >> 4) + x) & 0x0f0f0f0f; 1049 x = ((x >> 4) + x) & 0x0f0f0f0f;
743 x *= 0x01010101; 1050 x *= 0x01010101;
744 1051
745 return x >> 24; 1052 return x >> 24;
746 } 1053 }
747 1054
748 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; 1055 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
749 ecb_function_ int ecb_ld32 (uint32_t x) 1056 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
750 { 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
751 int r = 0; 1063 int r = 0;
752 1064
753 if (x >> 16) { x >>= 16; r += 16; } 1065 if (x >> 16) { x >>= 16; r += 16; }
754 if (x >> 8) { x >>= 8; r += 8; } 1066 if (x >> 8) { x >>= 8; r += 8; }
755 if (x >> 4) { x >>= 4; r += 4; } 1067 if (x >> 4) { x >>= 4; r += 4; }
756 if (x >> 2) { x >>= 2; r += 2; } 1068 if (x >> 2) { x >>= 2; r += 2; }
757 if (x >> 1) { r += 1; } 1069 if (x >> 1) { r += 1; }
758 1070
759 return r; 1071 return r;
1072#endif
760 } 1073 }
761 1074
762 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; 1075 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
763 ecb_function_ int ecb_ld64 (uint64_t x) 1076 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
764 { 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
765 int r = 0; 1083 int r = 0;
766 1084
767 if (x >> 32) { x >>= 32; r += 32; } 1085 if (x >> 32) { x >>= 32; r += 32; }
768 1086
769 return r + ecb_ld32 (x); 1087 return r + ecb_ld32 (x);
1088#endif
770 } 1089 }
771#endif 1090#endif
772 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
773ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const; 1097ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
774ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) 1098ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
775{ 1099{
776 return ( (x * 0x0802U & 0x22110U) 1100 return ( (x * 0x0802U & 0x22110U)
777 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; 1101 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
778} 1102}
779 1103
780ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const; 1104ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
781ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) 1105ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
782{ 1106{
783 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1); 1107 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
784 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2); 1108 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
785 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4); 1109 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
786 x = ( x >> 8 ) | ( x << 8); 1110 x = ( x >> 8 ) | ( x << 8);
787 1111
788 return x; 1112 return x;
789} 1113}
790 1114
791ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const; 1115ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
792ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) 1116ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
793{ 1117{
794 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1); 1118 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
795 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2); 1119 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
796 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4); 1120 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
797 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8); 1121 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
… …
800 return x; 1124 return x;
801} 1125}
802 1126
803/* popcount64 is only available on 64 bit cpus as gcc builtin */ 1127/* popcount64 is only available on 64 bit cpus as gcc builtin */
804/* so for this version we are lazy */ 1128/* so for this version we are lazy */
805ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 1129ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
806ecb_function_ int 1130ecb_function_ ecb_const int
807ecb_popcount64 (uint64_t x) 1131ecb_popcount64 (uint64_t x)
808{ 1132{
809 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); 1133 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
810} 1134}
811 1135
812ecb_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);
813ecb_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);
814ecb_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);
815ecb_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);
816ecb_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);
817ecb_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);
818ecb_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);
819ecb_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);
820 1144
821ecb_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); }
822ecb_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); }
823ecb_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); }
824ecb_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); }
825ecb_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); }
826ecb_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); }
827ecb_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); }
828ecb_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); }
829 1153
830#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
831 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 1158 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1159 #endif
832 #define ecb_bswap32(x) __builtin_bswap32 (x) 1160 #define ecb_bswap32(x) __builtin_bswap32 (x)
833 #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)))
834#else 1167#else
835 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; 1168 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
836 ecb_function_ uint16_t 1169 ecb_function_ ecb_const uint16_t
837 ecb_bswap16 (uint16_t x) 1170 ecb_bswap16 (uint16_t x)
838 { 1171 {
839 return ecb_rotl16 (x, 8); 1172 return ecb_rotl16 (x, 8);
840 } 1173 }
841 1174
842 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; 1175 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
843 ecb_function_ uint32_t 1176 ecb_function_ ecb_const uint32_t
844 ecb_bswap32 (uint32_t x) 1177 ecb_bswap32 (uint32_t x)
845 { 1178 {
846 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); 1179 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
847 } 1180 }
848 1181
849 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; 1182 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
850 ecb_function_ uint64_t 1183 ecb_function_ ecb_const uint64_t
851 ecb_bswap64 (uint64_t x) 1184 ecb_bswap64 (uint64_t x)
852 { 1185 {
853 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); 1186 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
854 } 1187 }
855#endif 1188#endif
856 1189
857#if ECB_GCC_VERSION(4,5) 1190#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
858 #define ecb_unreachable() __builtin_unreachable () 1191 #define ecb_unreachable() __builtin_unreachable ()
859#else 1192#else
860 /* 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 :/ */
861 ecb_inline void ecb_unreachable (void) ecb_noreturn; 1194 ecb_inline ecb_noreturn void ecb_unreachable (void);
862 ecb_inline void ecb_unreachable (void) { } 1195 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
863#endif 1196#endif
864 1197
865/* try to tell the compiler that some condition is definitely true */ 1198/* try to tell the compiler that some condition is definitely true */
866#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) 1199#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
867 1200
868ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const; 1201ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
869ecb_inline unsigned char 1202ecb_inline ecb_const uint32_t
870ecb_byteorder_helper (void) 1203ecb_byteorder_helper (void)
871{ 1204{
872 const uint32_t u = 0x11223344; 1205 /* the union code still generates code under pressure in gcc, */
873 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
874} 1227}
875 1228
876ecb_inline ecb_bool ecb_big_endian (void) ecb_const; 1229ecb_inline ecb_const ecb_bool ecb_big_endian (void);
877ecb_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; }
878ecb_inline ecb_bool ecb_little_endian (void) ecb_const; 1231ecb_inline ecb_const ecb_bool ecb_little_endian (void);
879ecb_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; }
880 1233
881#if ECB_GCC_VERSION(3,0) || ECB_C99 1234#if ECB_GCC_VERSION(3,0) || ECB_C99
882 #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))
883#else 1236#else
884 #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)))
885#endif 1238#endif
886 1239
887#if __cplusplus 1240#if ECB_CPP
888 template<typename T> 1241 template<typename T>
889 static inline T ecb_div_rd (T val, T div) 1242 static inline T ecb_div_rd (T val, T div)
890 { 1243 {
891 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; 1244 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
892 } 1245 }
… …
909 } 1262 }
910#else 1263#else
911 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1264 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
912#endif 1265#endif
913 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
914#endif 1572#endif
915 1573
916/* ECB.H END */ 1574/* ECB.H END */
917 1575
918#if ECB_MEMORY_FENCE_NEEDS_PTHREADS 1576#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
919/* 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
920 * 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
921 * 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
922 * libev, in which cases the memory fences become nops. 1580 * libev, in which cases the memory fences become nops.
923 * alternatively, you can remove this #error and link against libpthread, 1581 * alternatively, you can remove this #error and link against libpthread,
924 * which will then provide the memory fences. 1582 * which will then provide the memory fences.
925 */ 1583 */
926# error "memory fences not defined for your architecture, please report" 1584# error "memory fences not defined for your architecture, please report"
… …
930# define ECB_MEMORY_FENCE do { } while (0) 1588# define ECB_MEMORY_FENCE do { } while (0)
931# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 1589# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
932# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 1590# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
933#endif 1591#endif
934 1592
935#define expect_false(cond) ecb_expect_false (cond)
936#define expect_true(cond) ecb_expect_true (cond)
937#define noinline ecb_noinline
938
939#define inline_size ecb_inline 1593#define inline_size ecb_inline
940 1594
941#if EV_FEATURE_CODE 1595#if EV_FEATURE_CODE
942# define inline_speed ecb_inline 1596# define inline_speed ecb_inline
943#else 1597#else
944# define inline_speed static noinline 1598# define inline_speed ecb_noinline static
945#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/*****************************************************************************/
946 1666
947#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1667#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
948 1668
949#if EV_MINPRI == EV_MAXPRI 1669#if EV_MINPRI == EV_MAXPRI
950# define ABSPRI(w) (((W)w), 0) 1670# define ABSPRI(w) (((W)w), 0)
951#else 1671#else
952# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1672# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
953#endif 1673#endif
954 1674
955#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1675#define EMPTY /* required for microsofts broken pseudo-c compiler */
956#define EMPTY2(a,b) /* used to suppress some warnings */
957 1676
958typedef ev_watcher *W; 1677typedef ev_watcher *W;
959typedef ev_watcher_list *WL; 1678typedef ev_watcher_list *WL;
960typedef ev_watcher_time *WT; 1679typedef ev_watcher_time *WT;
961 1680
… …
986# include "ev_win32.c" 1705# include "ev_win32.c"
987#endif 1706#endif
988 1707
989/*****************************************************************************/ 1708/*****************************************************************************/
990 1709
1710#if EV_USE_LINUXAIO
1711# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1712#endif
1713
991/* define a suitable floor function (only used by periodics atm) */ 1714/* define a suitable floor function (only used by periodics atm) */
992 1715
993#if EV_USE_FLOOR 1716#if EV_USE_FLOOR
994# include <math.h> 1717# include <math.h>
995# define ev_floor(v) floor (v) 1718# define ev_floor(v) floor (v)
996#else 1719#else
997 1720
998#include <float.h> 1721#include <float.h>
999 1722
1000/* 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
1001static ev_tstamp noinline 1725static ev_tstamp
1002ev_floor (ev_tstamp v) 1726ev_floor (ev_tstamp v)
1003{ 1727{
1004 /* the choice of shift factor is not terribly important */ 1728 /* the choice of shift factor is not terribly important */
1005#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1729#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1006 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1730 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1007#else 1731#else
1008 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; 1732 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1009#endif 1733#endif
1010 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
1011 /* argument too large for an unsigned long? */ 1743 /* argument too large for an unsigned long? then reduce it */
1012 if (expect_false (v >= shift)) 1744 if (ecb_expect_false (v >= shift))
1013 { 1745 {
1014 ev_tstamp f; 1746 ev_tstamp f;
1015 1747
1016 if (v == v - 1.) 1748 if (v == v - 1.)
1017 return v; /* very large number */ 1749 return v; /* very large numbers are assumed to be integer */
1018 1750
1019 f = shift * ev_floor (v * (1. / shift)); 1751 f = shift * ev_floor (v * (1. / shift));
1020 return f + ev_floor (v - f); 1752 return f + ev_floor (v - f);
1021 } 1753 }
1022 1754
1023 /* special treatment for negative args? */
1024 if (expect_false (v < 0.))
1025 {
1026 ev_tstamp f = -ev_floor (-v);
1027
1028 return f - (f == v ? 0 : 1);
1029 }
1030
1031 /* fits into an unsigned long */ 1755 /* fits into an unsigned long */
1032 return (unsigned long)v; 1756 return (unsigned long)v;
1033} 1757}
1034 1758
1035#endif 1759#endif
… …
1038 1762
1039#ifdef __linux 1763#ifdef __linux
1040# include <sys/utsname.h> 1764# include <sys/utsname.h>
1041#endif 1765#endif
1042 1766
1043static unsigned int noinline ecb_cold 1767ecb_noinline ecb_cold
1768static unsigned int
1044ev_linux_version (void) 1769ev_linux_version (void)
1045{ 1770{
1046#ifdef __linux 1771#ifdef __linux
1047 unsigned int v = 0; 1772 unsigned int v = 0;
1048 struct utsname buf; 1773 struct utsname buf;
… …
1077} 1802}
1078 1803
1079/*****************************************************************************/ 1804/*****************************************************************************/
1080 1805
1081#if EV_AVOID_STDIO 1806#if EV_AVOID_STDIO
1082static void noinline ecb_cold 1807ecb_noinline ecb_cold
1808static void
1083ev_printerr (const char *msg) 1809ev_printerr (const char *msg)
1084{ 1810{
1085 write (STDERR_FILENO, msg, strlen (msg)); 1811 write (STDERR_FILENO, msg, strlen (msg));
1086} 1812}
1087#endif 1813#endif
1088 1814
1089static void (*syserr_cb)(const char *msg); 1815static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
1090 1816
1091void ecb_cold 1817ecb_cold
1818void
1092ev_set_syserr_cb (void (*cb)(const char *msg)) 1819ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
1093{ 1820{
1094 syserr_cb = cb; 1821 syserr_cb = cb;
1095} 1822}
1096 1823
1097static void noinline ecb_cold 1824ecb_noinline ecb_cold
1825static void
1098ev_syserr (const char *msg) 1826ev_syserr (const char *msg)
1099{ 1827{
1100 if (!msg) 1828 if (!msg)
1101 msg = "(libev) system error"; 1829 msg = "(libev) system error";
1102 1830
… …
1115 abort (); 1843 abort ();
1116 } 1844 }
1117} 1845}
1118 1846
1119static void * 1847static void *
1120ev_realloc_emul (void *ptr, long size) 1848ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
1121{ 1849{
1122#if __GLIBC__
1123 return realloc (ptr, size);
1124#else
1125 /* some systems, notably openbsd and darwin, fail to properly 1850 /* some systems, notably openbsd and darwin, fail to properly
1126 * 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
1127 * 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.
1128 */ 1855 */
1129 1856
1130 if (size) 1857 if (size)
1131 return realloc (ptr, size); 1858 return realloc (ptr, size);
1132 1859
1133 free (ptr); 1860 free (ptr);
1134 return 0; 1861 return 0;
1135#endif
1136} 1862}
1137 1863
1138static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1864static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
1139 1865
1140void ecb_cold 1866ecb_cold
1867void
1141ev_set_allocator (void *(*cb)(void *ptr, long size)) 1868ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
1142{ 1869{
1143 alloc = cb; 1870 alloc = cb;
1144} 1871}
1145 1872
1146inline_speed void * 1873inline_speed void *
… …
1173typedef struct 1900typedef struct
1174{ 1901{
1175 WL head; 1902 WL head;
1176 unsigned char events; /* the events watched for */ 1903 unsigned char events; /* the events watched for */
1177 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) */
1178 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 */
1179 unsigned char unused; 1906 unsigned char eflags; /* flags field for use by backends */
1180#if EV_USE_EPOLL 1907#if EV_USE_EPOLL
1181 unsigned int egen; /* generation counter to counter epoll bugs */ 1908 unsigned int egen; /* generation counter to counter epoll bugs */
1182#endif 1909#endif
1183#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 1910#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1184 SOCKET handle; 1911 SOCKET handle;
… …
1248 static int ev_default_loop_ptr; 1975 static int ev_default_loop_ptr;
1249 1976
1250#endif 1977#endif
1251 1978
1252#if EV_FEATURE_API 1979#if EV_FEATURE_API
1253# 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)
1254# 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)
1255# define EV_INVOKE_PENDING invoke_cb (EV_A) 1982# define EV_INVOKE_PENDING invoke_cb (EV_A)
1256#else 1983#else
1257# define EV_RELEASE_CB (void)0 1984# define EV_RELEASE_CB (void)0
1258# define EV_ACQUIRE_CB (void)0 1985# define EV_ACQUIRE_CB (void)0
1259# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1986# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
… …
1263 1990
1264/*****************************************************************************/ 1991/*****************************************************************************/
1265 1992
1266#ifndef EV_HAVE_EV_TIME 1993#ifndef EV_HAVE_EV_TIME
1267ev_tstamp 1994ev_tstamp
1268ev_time (void) 1995ev_time (void) EV_NOEXCEPT
1269{ 1996{
1270#if EV_USE_REALTIME 1997#if EV_USE_REALTIME
1271 if (expect_true (have_realtime)) 1998 if (ecb_expect_true (have_realtime))
1272 { 1999 {
1273 struct timespec ts; 2000 struct timespec ts;
1274 clock_gettime (CLOCK_REALTIME, &ts); 2001 clock_gettime (CLOCK_REALTIME, &ts);
1275 return ts.tv_sec + ts.tv_nsec * 1e-9; 2002 return EV_TS_GET (ts);
1276 } 2003 }
1277#endif 2004#endif
1278 2005
1279 struct timeval tv; 2006 struct timeval tv;
1280 gettimeofday (&tv, 0); 2007 gettimeofday (&tv, 0);
1281 return tv.tv_sec + tv.tv_usec * 1e-6; 2008 return EV_TV_GET (tv);
1282} 2009}
1283#endif 2010#endif
1284 2011
1285inline_size ev_tstamp 2012inline_size ev_tstamp
1286get_clock (void) 2013get_clock (void)
1287{ 2014{
1288#if EV_USE_MONOTONIC 2015#if EV_USE_MONOTONIC
1289 if (expect_true (have_monotonic)) 2016 if (ecb_expect_true (have_monotonic))
1290 { 2017 {
1291 struct timespec ts; 2018 struct timespec ts;
1292 clock_gettime (CLOCK_MONOTONIC, &ts); 2019 clock_gettime (CLOCK_MONOTONIC, &ts);
1293 return ts.tv_sec + ts.tv_nsec * 1e-9; 2020 return EV_TS_GET (ts);
1294 } 2021 }
1295#endif 2022#endif
1296 2023
1297 return ev_time (); 2024 return ev_time ();
1298} 2025}
1299 2026
1300#if EV_MULTIPLICITY 2027#if EV_MULTIPLICITY
1301ev_tstamp 2028ev_tstamp
1302ev_now (EV_P) 2029ev_now (EV_P) EV_NOEXCEPT
1303{ 2030{
1304 return ev_rt_now; 2031 return ev_rt_now;
1305} 2032}
1306#endif 2033#endif
1307 2034
1308void 2035void
1309ev_sleep (ev_tstamp delay) 2036ev_sleep (ev_tstamp delay) EV_NOEXCEPT
1310{ 2037{
1311 if (delay > 0.) 2038 if (delay > 0.)
1312 { 2039 {
1313#if EV_USE_NANOSLEEP 2040#if EV_USE_NANOSLEEP
1314 struct timespec ts; 2041 struct timespec ts;
1315 2042
1316 EV_TS_SET (ts, delay); 2043 EV_TS_SET (ts, delay);
1317 nanosleep (&ts, 0); 2044 nanosleep (&ts, 0);
1318#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) */
1319 Sleep ((unsigned long)(delay * 1e3)); 2048 Sleep ((unsigned long)(EV_TS_TO_MS (delay)));
1320#else 2049#else
1321 struct timeval tv; 2050 struct timeval tv;
1322 2051
1323 /* 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 */
1324 /* something not guaranteed by newer posix versions, but guaranteed */ 2053 /* something not guaranteed by newer posix versions, but guaranteed */
… …
1354 } 2083 }
1355 2084
1356 return ncur; 2085 return ncur;
1357} 2086}
1358 2087
1359static void * noinline ecb_cold 2088ecb_noinline ecb_cold
2089static void *
1360array_realloc (int elem, void *base, int *cur, int cnt) 2090array_realloc (int elem, void *base, int *cur, int cnt)
1361{ 2091{
1362 *cur = array_nextsize (elem, *cur, cnt); 2092 *cur = array_nextsize (elem, *cur, cnt);
1363 return ev_realloc (base, elem * *cur); 2093 return ev_realloc (base, elem * *cur);
1364} 2094}
1365 2095
2096#define array_needsize_noinit(base,offset,count)
2097
1366#define array_init_zero(base,count) \ 2098#define array_needsize_zerofill(base,offset,count) \
1367 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2099 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
1368 2100
1369#define array_needsize(type,base,cur,cnt,init) \ 2101#define array_needsize(type,base,cur,cnt,init) \
1370 if (expect_false ((cnt) > (cur))) \ 2102 if (ecb_expect_false ((cnt) > (cur))) \
1371 { \ 2103 { \
1372 int ecb_unused ocur_ = (cur); \ 2104 ecb_unused int ocur_ = (cur); \
1373 (base) = (type *)array_realloc \ 2105 (base) = (type *)array_realloc \
1374 (sizeof (type), (base), &(cur), (cnt)); \ 2106 (sizeof (type), (base), &(cur), (cnt)); \
1375 init ((base) + (ocur_), (cur) - ocur_); \ 2107 init ((base), ocur_, ((cur) - ocur_)); \
1376 } 2108 }
1377 2109
1378#if 0 2110#if 0
1379#define array_slim(type,stem) \ 2111#define array_slim(type,stem) \
1380 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2112 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
1389 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
1390 2122
1391/*****************************************************************************/ 2123/*****************************************************************************/
1392 2124
1393/* dummy callback for pending events */ 2125/* dummy callback for pending events */
1394static void noinline 2126ecb_noinline
2127static void
1395pendingcb (EV_P_ ev_prepare *w, int revents) 2128pendingcb (EV_P_ ev_prepare *w, int revents)
1396{ 2129{
1397} 2130}
1398 2131
1399void noinline 2132ecb_noinline
2133void
1400ev_feed_event (EV_P_ void *w, int revents) 2134ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
1401{ 2135{
1402 W w_ = (W)w; 2136 W w_ = (W)w;
1403 int pri = ABSPRI (w_); 2137 int pri = ABSPRI (w_);
1404 2138
1405 if (expect_false (w_->pending)) 2139 if (ecb_expect_false (w_->pending))
1406 pendings [pri][w_->pending - 1].events |= revents; 2140 pendings [pri][w_->pending - 1].events |= revents;
1407 else 2141 else
1408 { 2142 {
1409 w_->pending = ++pendingcnt [pri]; 2143 w_->pending = ++pendingcnt [pri];
1410 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2144 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
1411 pendings [pri][w_->pending - 1].w = w_; 2145 pendings [pri][w_->pending - 1].w = w_;
1412 pendings [pri][w_->pending - 1].events = revents; 2146 pendings [pri][w_->pending - 1].events = revents;
1413 } 2147 }
2148
2149 pendingpri = NUMPRI - 1;
1414} 2150}
1415 2151
1416inline_speed void 2152inline_speed void
1417feed_reverse (EV_P_ W w) 2153feed_reverse (EV_P_ W w)
1418{ 2154{
1419 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2155 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
1420 rfeeds [rfeedcnt++] = w; 2156 rfeeds [rfeedcnt++] = w;
1421} 2157}
1422 2158
1423inline_size void 2159inline_size void
1424feed_reverse_done (EV_P_ int revents) 2160feed_reverse_done (EV_P_ int revents)
… …
1459inline_speed void 2195inline_speed void
1460fd_event (EV_P_ int fd, int revents) 2196fd_event (EV_P_ int fd, int revents)
1461{ 2197{
1462 ANFD *anfd = anfds + fd; 2198 ANFD *anfd = anfds + fd;
1463 2199
1464 if (expect_true (!anfd->reify)) 2200 if (ecb_expect_true (!anfd->reify))
1465 fd_event_nocheck (EV_A_ fd, revents); 2201 fd_event_nocheck (EV_A_ fd, revents);
1466} 2202}
1467 2203
1468void 2204void
1469ev_feed_fd_event (EV_P_ int fd, int revents) 2205ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
1470{ 2206{
1471 if (fd >= 0 && fd < anfdmax) 2207 if (fd >= 0 && fd < anfdmax)
1472 fd_event_nocheck (EV_A_ fd, revents); 2208 fd_event_nocheck (EV_A_ fd, revents);
1473} 2209}
1474 2210
… …
1511 ev_io *w; 2247 ev_io *w;
1512 2248
1513 unsigned char o_events = anfd->events; 2249 unsigned char o_events = anfd->events;
1514 unsigned char o_reify = anfd->reify; 2250 unsigned char o_reify = anfd->reify;
1515 2251
1516 anfd->reify = 0; 2252 anfd->reify = 0;
1517 2253
1518 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 2254 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
1519 { 2255 {
1520 anfd->events = 0; 2256 anfd->events = 0;
1521 2257
1522 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)
1523 anfd->events |= (unsigned char)w->events; 2259 anfd->events |= (unsigned char)w->events;
… …
1532 2268
1533 fdchangecnt = 0; 2269 fdchangecnt = 0;
1534} 2270}
1535 2271
1536/* something about the given fd changed */ 2272/* something about the given fd changed */
1537inline_size void 2273inline_size
2274void
1538fd_change (EV_P_ int fd, int flags) 2275fd_change (EV_P_ int fd, int flags)
1539{ 2276{
1540 unsigned char reify = anfds [fd].reify; 2277 unsigned char reify = anfds [fd].reify;
1541 anfds [fd].reify |= flags; 2278 anfds [fd].reify |= flags;
1542 2279
1543 if (expect_true (!reify)) 2280 if (ecb_expect_true (!reify))
1544 { 2281 {
1545 ++fdchangecnt; 2282 ++fdchangecnt;
1546 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2283 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
1547 fdchanges [fdchangecnt - 1] = fd; 2284 fdchanges [fdchangecnt - 1] = fd;
1548 } 2285 }
1549} 2286}
1550 2287
1551/* 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 */
1552inline_speed void ecb_cold 2289inline_speed ecb_cold void
1553fd_kill (EV_P_ int fd) 2290fd_kill (EV_P_ int fd)
1554{ 2291{
1555 ev_io *w; 2292 ev_io *w;
1556 2293
1557 while ((w = (ev_io *)anfds [fd].head)) 2294 while ((w = (ev_io *)anfds [fd].head))
… …
1560 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);
1561 } 2298 }
1562} 2299}
1563 2300
1564/* check whether the given fd is actually valid, for error recovery */ 2301/* check whether the given fd is actually valid, for error recovery */
1565inline_size int ecb_cold 2302inline_size ecb_cold int
1566fd_valid (int fd) 2303fd_valid (int fd)
1567{ 2304{
1568#ifdef _WIN32 2305#ifdef _WIN32
1569 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2306 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1570#else 2307#else
1571 return fcntl (fd, F_GETFD) != -1; 2308 return fcntl (fd, F_GETFD) != -1;
1572#endif 2309#endif
1573} 2310}
1574 2311
1575/* called on EBADF to verify fds */ 2312/* called on EBADF to verify fds */
1576static void noinline ecb_cold 2313ecb_noinline ecb_cold
2314static void
1577fd_ebadf (EV_P) 2315fd_ebadf (EV_P)
1578{ 2316{
1579 int fd; 2317 int fd;
1580 2318
1581 for (fd = 0; fd < anfdmax; ++fd) 2319 for (fd = 0; fd < anfdmax; ++fd)
… …
1583 if (!fd_valid (fd) && errno == EBADF) 2321 if (!fd_valid (fd) && errno == EBADF)
1584 fd_kill (EV_A_ fd); 2322 fd_kill (EV_A_ fd);
1585} 2323}
1586 2324
1587/* 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 */
1588static void noinline ecb_cold 2326ecb_noinline ecb_cold
2327static void
1589fd_enomem (EV_P) 2328fd_enomem (EV_P)
1590{ 2329{
1591 int fd; 2330 int fd;
1592 2331
1593 for (fd = anfdmax; fd--; ) 2332 for (fd = anfdmax; fd--; )
… …
1597 break; 2336 break;
1598 } 2337 }
1599} 2338}
1600 2339
1601/* 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 */
1602static void noinline 2341ecb_noinline
2342static void
1603fd_rearm_all (EV_P) 2343fd_rearm_all (EV_P)
1604{ 2344{
1605 int fd; 2345 int fd;
1606 2346
1607 for (fd = 0; fd < anfdmax; ++fd) 2347 for (fd = 0; fd < anfdmax; ++fd)
… …
1660 ev_tstamp minat; 2400 ev_tstamp minat;
1661 ANHE *minpos; 2401 ANHE *minpos;
1662 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2402 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1663 2403
1664 /* find minimum child */ 2404 /* find minimum child */
1665 if (expect_true (pos + DHEAP - 1 < E)) 2405 if (ecb_expect_true (pos + DHEAP - 1 < E))
1666 { 2406 {
1667 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2407 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1668 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));
1669 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));
1670 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));
1671 } 2411 }
1672 else if (pos < E) 2412 else if (pos < E)
1673 { 2413 {
1674 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2414 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1675 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));
1676 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));
1677 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));
1678 } 2418 }
1679 else 2419 else
1680 break; 2420 break;
1681 2421
1682 if (ANHE_at (he) <= minat) 2422 if (ANHE_at (he) <= minat)
… …
1690 2430
1691 heap [k] = he; 2431 heap [k] = he;
1692 ev_active (ANHE_w (he)) = k; 2432 ev_active (ANHE_w (he)) = k;
1693} 2433}
1694 2434
1695#else /* 4HEAP */ 2435#else /* not 4HEAP */
1696 2436
1697#define HEAP0 1 2437#define HEAP0 1
1698#define HPARENT(k) ((k) >> 1) 2438#define HPARENT(k) ((k) >> 1)
1699#define UPHEAP_DONE(p,k) (!(p)) 2439#define UPHEAP_DONE(p,k) (!(p))
1700 2440
… …
1788 2528
1789/*****************************************************************************/ 2529/*****************************************************************************/
1790 2530
1791#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2531#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1792 2532
1793static void noinline ecb_cold 2533ecb_noinline ecb_cold
2534static void
1794evpipe_init (EV_P) 2535evpipe_init (EV_P)
1795{ 2536{
1796 if (!ev_is_active (&pipe_w)) 2537 if (!ev_is_active (&pipe_w))
1797 { 2538 {
2539 int fds [2];
2540
1798# if EV_USE_EVENTFD 2541# if EV_USE_EVENTFD
2542 fds [0] = -1;
1799 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2543 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1800 if (evfd < 0 && errno == EINVAL) 2544 if (fds [1] < 0 && errno == EINVAL)
1801 evfd = eventfd (0, 0); 2545 fds [1] = eventfd (0, 0);
1802 2546
1803 if (evfd >= 0) 2547 if (fds [1] < 0)
2548# endif
1804 { 2549 {
2550 while (pipe (fds))
2551 ev_syserr ("(libev) error creating signal/async pipe");
2552
2553 fd_intern (fds [0]);
2554 }
2555
1805 evpipe [0] = -1; 2556 evpipe [0] = fds [0];
1806 fd_intern (evfd); /* doing it twice doesn't hurt */ 2557
1807 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));
1808 } 2608 }
1809 else 2609 else
1810# endif 2610#endif
1811 { 2611 {
1812 while (pipe (evpipe)) 2612#ifdef _WIN32
1813 ev_syserr ("(libev) error creating signal/async pipe"); 2613 WSABUF buf;
1814 2614 DWORD sent;
1815 fd_intern (evpipe [0]); 2615 buf.buf = (char *)&buf;
1816 fd_intern (evpipe [1]); 2616 buf.len = 1;
1817 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2617 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1818 } 2618#else
1819
1820 ev_io_start (EV_A_ &pipe_w);
1821 ev_unref (EV_A); /* watcher should not keep loop alive */
1822 }
1823}
1824
1825inline_speed void
1826evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1827{
1828 if (expect_true (*flag))
1829 return;
1830
1831 *flag = 1;
1832
1833 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1834
1835 pipe_write_skipped = 1;
1836
1837 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1838
1839 if (pipe_write_wanted)
1840 {
1841 int old_errno;
1842
1843 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1844
1845 old_errno = errno; /* save errno because write will clobber it */
1846
1847#if EV_USE_EVENTFD
1848 if (evfd >= 0)
1849 {
1850 uint64_t counter = 1;
1851 write (evfd, &counter, sizeof (uint64_t));
1852 }
1853 else
1854#endif
1855 {
1856 /* win32 people keep sending patches that change this write() to send() */
1857 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1858 /* so when you think this write should be a send instead, please find out */
1859 /* where your send() is from - it's definitely not the microsoft send, and */
1860 /* tell me. thank you. */
1861 write (evpipe [1], &(evpipe [1]), 1); 2619 write (evpipe [1], &(evpipe [1]), 1);
2620#endif
1862 } 2621 }
1863 2622
1864 errno = old_errno; 2623 errno = old_errno;
1865 } 2624 }
1866} 2625}
… …
1873 int i; 2632 int i;
1874 2633
1875 if (revents & EV_READ) 2634 if (revents & EV_READ)
1876 { 2635 {
1877#if EV_USE_EVENTFD 2636#if EV_USE_EVENTFD
1878 if (evfd >= 0) 2637 if (evpipe [0] < 0)
1879 { 2638 {
1880 uint64_t counter; 2639 uint64_t counter;
1881 read (evfd, &counter, sizeof (uint64_t)); 2640 read (evpipe [1], &counter, sizeof (uint64_t));
1882 } 2641 }
1883 else 2642 else
1884#endif 2643#endif
1885 { 2644 {
1886 char dummy; 2645 char dummy[4];
1887 /* 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
1888 read (evpipe [0], &dummy, 1); 2654 read (evpipe [0], &dummy, sizeof (dummy));
2655#endif
1889 } 2656 }
1890 } 2657 }
1891 2658
1892 pipe_write_skipped = 0; 2659 pipe_write_skipped = 0;
2660
2661 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1893 2662
1894#if EV_SIGNAL_ENABLE 2663#if EV_SIGNAL_ENABLE
1895 if (sig_pending) 2664 if (sig_pending)
1896 { 2665 {
1897 sig_pending = 0; 2666 sig_pending = 0;
1898 2667
2668 ECB_MEMORY_FENCE;
2669
1899 for (i = EV_NSIG - 1; i--; ) 2670 for (i = EV_NSIG - 1; i--; )
1900 if (expect_false (signals [i].pending)) 2671 if (ecb_expect_false (signals [i].pending))
1901 ev_feed_signal_event (EV_A_ i + 1); 2672 ev_feed_signal_event (EV_A_ i + 1);
1902 } 2673 }
1903#endif 2674#endif
1904 2675
1905#if EV_ASYNC_ENABLE 2676#if EV_ASYNC_ENABLE
1906 if (async_pending) 2677 if (async_pending)
1907 { 2678 {
1908 async_pending = 0; 2679 async_pending = 0;
2680
2681 ECB_MEMORY_FENCE;
1909 2682
1910 for (i = asynccnt; i--; ) 2683 for (i = asynccnt; i--; )
1911 if (asyncs [i]->sent) 2684 if (asyncs [i]->sent)
1912 { 2685 {
1913 asyncs [i]->sent = 0; 2686 asyncs [i]->sent = 0;
2687 ECB_MEMORY_FENCE_RELEASE;
1914 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2688 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1915 } 2689 }
1916 } 2690 }
1917#endif 2691#endif
1918} 2692}
1919 2693
1920/*****************************************************************************/ 2694/*****************************************************************************/
1921 2695
1922void 2696void
1923ev_feed_signal (int signum) 2697ev_feed_signal (int signum) EV_NOEXCEPT
1924{ 2698{
1925#if EV_MULTIPLICITY 2699#if EV_MULTIPLICITY
2700 EV_P;
2701 ECB_MEMORY_FENCE_ACQUIRE;
1926 EV_P = signals [signum - 1].loop; 2702 EV_A = signals [signum - 1].loop;
1927 2703
1928 if (!EV_A) 2704 if (!EV_A)
1929 return; 2705 return;
1930#endif 2706#endif
1931 2707
1932 if (!ev_active (&pipe_w))
1933 return;
1934
1935 signals [signum - 1].pending = 1; 2708 signals [signum - 1].pending = 1;
1936 evpipe_write (EV_A_ &sig_pending); 2709 evpipe_write (EV_A_ &sig_pending);
1937} 2710}
1938 2711
1939static void 2712static void
… …
1944#endif 2717#endif
1945 2718
1946 ev_feed_signal (signum); 2719 ev_feed_signal (signum);
1947} 2720}
1948 2721
1949void noinline 2722ecb_noinline
2723void
1950ev_feed_signal_event (EV_P_ int signum) 2724ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1951{ 2725{
1952 WL w; 2726 WL w;
1953 2727
1954 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2728 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
1955 return; 2729 return;
1956 2730
1957 --signum; 2731 --signum;
1958 2732
1959#if EV_MULTIPLICITY 2733#if EV_MULTIPLICITY
1960 /* 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 */
1961 /* or, likely more useful, feeding a signal nobody is waiting for */ 2735 /* or, likely more useful, feeding a signal nobody is waiting for */
1962 2736
1963 if (expect_false (signals [signum].loop != EV_A)) 2737 if (ecb_expect_false (signals [signum].loop != EV_A))
1964 return; 2738 return;
1965#endif 2739#endif
1966 2740
1967 signals [signum].pending = 0; 2741 signals [signum].pending = 0;
2742 ECB_MEMORY_FENCE_RELEASE;
1968 2743
1969 for (w = signals [signum].head; w; w = w->next) 2744 for (w = signals [signum].head; w; w = w->next)
1970 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2745 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1971} 2746}
1972 2747
… …
2063# include "ev_kqueue.c" 2838# include "ev_kqueue.c"
2064#endif 2839#endif
2065#if EV_USE_EPOLL 2840#if EV_USE_EPOLL
2066# include "ev_epoll.c" 2841# include "ev_epoll.c"
2067#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
2068#if EV_USE_POLL 2849#if EV_USE_POLL
2069# include "ev_poll.c" 2850# include "ev_poll.c"
2070#endif 2851#endif
2071#if EV_USE_SELECT 2852#if EV_USE_SELECT
2072# include "ev_select.c" 2853# include "ev_select.c"
2073#endif 2854#endif
2074 2855
2075int ecb_cold 2856ecb_cold int
2076ev_version_major (void) 2857ev_version_major (void) EV_NOEXCEPT
2077{ 2858{
2078 return EV_VERSION_MAJOR; 2859 return EV_VERSION_MAJOR;
2079} 2860}
2080 2861
2081int ecb_cold 2862ecb_cold int
2082ev_version_minor (void) 2863ev_version_minor (void) EV_NOEXCEPT
2083{ 2864{
2084 return EV_VERSION_MINOR; 2865 return EV_VERSION_MINOR;
2085} 2866}
2086 2867
2087/* 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 */
2088int inline_size ecb_cold 2869inline_size ecb_cold int
2089enable_secure (void) 2870enable_secure (void)
2090{ 2871{
2091#ifdef _WIN32 2872#ifdef _WIN32
2092 return 0; 2873 return 0;
2093#else 2874#else
2094 return getuid () != geteuid () 2875 return getuid () != geteuid ()
2095 || getgid () != getegid (); 2876 || getgid () != getegid ();
2096#endif 2877#endif
2097} 2878}
2098 2879
2099unsigned int ecb_cold 2880ecb_cold
2881unsigned int
2100ev_supported_backends (void) 2882ev_supported_backends (void) EV_NOEXCEPT
2101{ 2883{
2102 unsigned int flags = 0; 2884 unsigned int flags = 0;
2103 2885
2104 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2886 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2105 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2887 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
2106 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;
2107 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2891 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
2108 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2892 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
2109 2893
2110 return flags; 2894 return flags;
2111} 2895}
2112 2896
2113unsigned int ecb_cold 2897ecb_cold
2898unsigned int
2114ev_recommended_backends (void) 2899ev_recommended_backends (void) EV_NOEXCEPT
2115{ 2900{
2116 unsigned int flags = ev_supported_backends (); 2901 unsigned int flags = ev_supported_backends ();
2117 2902
2118#ifndef __NetBSD__ 2903#ifndef __NetBSD__
2119 /* kqueue is borked on everything but netbsd apparently */ 2904 /* kqueue is borked on everything but netbsd apparently */
… …
2127#endif 2912#endif
2128#ifdef __FreeBSD__ 2913#ifdef __FreeBSD__
2129 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) */
2130#endif 2915#endif
2131 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
2132 return flags; 2926 return flags;
2133} 2927}
2134 2928
2135unsigned int ecb_cold 2929ecb_cold
2930unsigned int
2136ev_embeddable_backends (void) 2931ev_embeddable_backends (void) EV_NOEXCEPT
2137{ 2932{
2138 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2933 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2139 2934
2140 /* 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 */
2141 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 */
2142 flags &= ~EVBACKEND_EPOLL; 2937 flags &= ~EVBACKEND_EPOLL;
2143 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
2144 return flags; 2946 return flags;
2145} 2947}
2146 2948
2147unsigned int 2949unsigned int
2148ev_backend (EV_P) 2950ev_backend (EV_P) EV_NOEXCEPT
2149{ 2951{
2150 return backend; 2952 return backend;
2151} 2953}
2152 2954
2153#if EV_FEATURE_API 2955#if EV_FEATURE_API
2154unsigned int 2956unsigned int
2155ev_iteration (EV_P) 2957ev_iteration (EV_P) EV_NOEXCEPT
2156{ 2958{
2157 return loop_count; 2959 return loop_count;
2158} 2960}
2159 2961
2160unsigned int 2962unsigned int
2161ev_depth (EV_P) 2963ev_depth (EV_P) EV_NOEXCEPT
2162{ 2964{
2163 return loop_depth; 2965 return loop_depth;
2164} 2966}
2165 2967
2166void 2968void
2167ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2969ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2168{ 2970{
2169 io_blocktime = interval; 2971 io_blocktime = interval;
2170} 2972}
2171 2973
2172void 2974void
2173ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2975ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2174{ 2976{
2175 timeout_blocktime = interval; 2977 timeout_blocktime = interval;
2176} 2978}
2177 2979
2178void 2980void
2179ev_set_userdata (EV_P_ void *data) 2981ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2180{ 2982{
2181 userdata = data; 2983 userdata = data;
2182} 2984}
2183 2985
2184void * 2986void *
2185ev_userdata (EV_P) 2987ev_userdata (EV_P) EV_NOEXCEPT
2186{ 2988{
2187 return userdata; 2989 return userdata;
2188} 2990}
2189 2991
2190void 2992void
2191ev_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
2192{ 2994{
2193 invoke_cb = invoke_pending_cb; 2995 invoke_cb = invoke_pending_cb;
2194} 2996}
2195 2997
2196void 2998void
2197ev_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
2198{ 3000{
2199 release_cb = release; 3001 release_cb = release;
2200 acquire_cb = acquire; 3002 acquire_cb = acquire;
2201} 3003}
2202#endif 3004#endif
2203 3005
2204/* initialise a loop structure, must be zero-initialised */ 3006/* initialise a loop structure, must be zero-initialised */
2205static void noinline ecb_cold 3007ecb_noinline ecb_cold
3008static void
2206loop_init (EV_P_ unsigned int flags) 3009loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
2207{ 3010{
2208 if (!backend) 3011 if (!backend)
2209 { 3012 {
2210 origflags = flags; 3013 origflags = flags;
2211 3014
… …
2256#if EV_ASYNC_ENABLE 3059#if EV_ASYNC_ENABLE
2257 async_pending = 0; 3060 async_pending = 0;
2258#endif 3061#endif
2259 pipe_write_skipped = 0; 3062 pipe_write_skipped = 0;
2260 pipe_write_wanted = 0; 3063 pipe_write_wanted = 0;
3064 evpipe [0] = -1;
3065 evpipe [1] = -1;
2261#if EV_USE_INOTIFY 3066#if EV_USE_INOTIFY
2262 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3067 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2263#endif 3068#endif
2264#if EV_USE_SIGNALFD 3069#if EV_USE_SIGNALFD
2265 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 3070 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
… …
2267 3072
2268 if (!(flags & EVBACKEND_MASK)) 3073 if (!(flags & EVBACKEND_MASK))
2269 flags |= ev_recommended_backends (); 3074 flags |= ev_recommended_backends ();
2270 3075
2271#if EV_USE_IOCP 3076#if EV_USE_IOCP
2272 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 3077 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2273#endif 3078#endif
2274#if EV_USE_PORT 3079#if EV_USE_PORT
2275 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3080 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
2276#endif 3081#endif
2277#if EV_USE_KQUEUE 3082#if EV_USE_KQUEUE
2278 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);
2279#endif 3090#endif
2280#if EV_USE_EPOLL 3091#if EV_USE_EPOLL
2281 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3092 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
2282#endif 3093#endif
2283#if EV_USE_POLL 3094#if EV_USE_POLL
2284 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3095 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
2285#endif 3096#endif
2286#if EV_USE_SELECT 3097#if EV_USE_SELECT
2287 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3098 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
2288#endif 3099#endif
2289 3100
2290 ev_prepare_init (&pending_w, pendingcb); 3101 ev_prepare_init (&pending_w, pendingcb);
2291 3102
2292#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3103#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
2295#endif 3106#endif
2296 } 3107 }
2297} 3108}
2298 3109
2299/* free up a loop structure */ 3110/* free up a loop structure */
2300void ecb_cold 3111ecb_cold
3112void
2301ev_loop_destroy (EV_P) 3113ev_loop_destroy (EV_P)
2302{ 3114{
2303 int i; 3115 int i;
2304 3116
2305#if EV_MULTIPLICITY 3117#if EV_MULTIPLICITY
… …
2308 return; 3120 return;
2309#endif 3121#endif
2310 3122
2311#if EV_CLEANUP_ENABLE 3123#if EV_CLEANUP_ENABLE
2312 /* queue cleanup watchers (and execute them) */ 3124 /* queue cleanup watchers (and execute them) */
2313 if (expect_false (cleanupcnt)) 3125 if (ecb_expect_false (cleanupcnt))
2314 { 3126 {
2315 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); 3127 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2316 EV_INVOKE_PENDING; 3128 EV_INVOKE_PENDING;
2317 } 3129 }
2318#endif 3130#endif
2319 3131
2320#if EV_CHILD_ENABLE 3132#if EV_CHILD_ENABLE
2321 if (ev_is_active (&childev)) 3133 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2322 { 3134 {
2323 ev_ref (EV_A); /* child watcher */ 3135 ev_ref (EV_A); /* child watcher */
2324 ev_signal_stop (EV_A_ &childev); 3136 ev_signal_stop (EV_A_ &childev);
2325 } 3137 }
2326#endif 3138#endif
… …
2328 if (ev_is_active (&pipe_w)) 3140 if (ev_is_active (&pipe_w))
2329 { 3141 {
2330 /*ev_ref (EV_A);*/ 3142 /*ev_ref (EV_A);*/
2331 /*ev_io_stop (EV_A_ &pipe_w);*/ 3143 /*ev_io_stop (EV_A_ &pipe_w);*/
2332 3144
2333#if EV_USE_EVENTFD
2334 if (evfd >= 0)
2335 close (evfd);
2336#endif
2337
2338 if (evpipe [0] >= 0)
2339 {
2340 EV_WIN32_CLOSE_FD (evpipe [0]); 3145 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2341 EV_WIN32_CLOSE_FD (evpipe [1]); 3146 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2342 }
2343 } 3147 }
2344 3148
2345#if EV_USE_SIGNALFD 3149#if EV_USE_SIGNALFD
2346 if (ev_is_active (&sigfd_w)) 3150 if (ev_is_active (&sigfd_w))
2347 close (sigfd); 3151 close (sigfd);
… …
2354 3158
2355 if (backend_fd >= 0) 3159 if (backend_fd >= 0)
2356 close (backend_fd); 3160 close (backend_fd);
2357 3161
2358#if EV_USE_IOCP 3162#if EV_USE_IOCP
2359 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3163 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2360#endif 3164#endif
2361#if EV_USE_PORT 3165#if EV_USE_PORT
2362 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3166 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
2363#endif 3167#endif
2364#if EV_USE_KQUEUE 3168#if EV_USE_KQUEUE
2365 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);
2366#endif 3176#endif
2367#if EV_USE_EPOLL 3177#if EV_USE_EPOLL
2368 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3178 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
2369#endif 3179#endif
2370#if EV_USE_POLL 3180#if EV_USE_POLL
2371 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3181 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
2372#endif 3182#endif
2373#if EV_USE_SELECT 3183#if EV_USE_SELECT
2374 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3184 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
2375#endif 3185#endif
2376 3186
2377 for (i = NUMPRI; i--; ) 3187 for (i = NUMPRI; i--; )
2378 { 3188 {
2379 array_free (pending, [i]); 3189 array_free (pending, [i]);
… …
2421 3231
2422inline_size void 3232inline_size void
2423loop_fork (EV_P) 3233loop_fork (EV_P)
2424{ 3234{
2425#if EV_USE_PORT 3235#if EV_USE_PORT
2426 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3236 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
2427#endif 3237#endif
2428#if EV_USE_KQUEUE 3238#if EV_USE_KQUEUE
2429 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);
2430#endif 3246#endif
2431#if EV_USE_EPOLL 3247#if EV_USE_EPOLL
2432 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3248 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
2433#endif 3249#endif
2434#if EV_USE_INOTIFY 3250#if EV_USE_INOTIFY
2435 infy_fork (EV_A); 3251 infy_fork (EV_A);
2436#endif 3252#endif
2437 3253
3254#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2438 if (ev_is_active (&pipe_w)) 3255 if (ev_is_active (&pipe_w) && postfork != 2)
2439 { 3256 {
2440 /* 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 */
2441 3258
2442 ev_ref (EV_A); 3259 ev_ref (EV_A);
2443 ev_io_stop (EV_A_ &pipe_w); 3260 ev_io_stop (EV_A_ &pipe_w);
2444 3261
2445#if EV_USE_EVENTFD
2446 if (evfd >= 0)
2447 close (evfd);
2448#endif
2449
2450 if (evpipe [0] >= 0) 3262 if (evpipe [0] >= 0)
2451 {
2452 EV_WIN32_CLOSE_FD (evpipe [0]); 3263 EV_WIN32_CLOSE_FD (evpipe [0]);
2453 EV_WIN32_CLOSE_FD (evpipe [1]);
2454 }
2455 3264
2456#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2457 evpipe_init (EV_A); 3265 evpipe_init (EV_A);
2458 /* now iterate over everything, in case we missed something */ 3266 /* iterate over everything, in case we missed something before */
2459 pipecb (EV_A_ &pipe_w, EV_READ); 3267 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2460#endif
2461 } 3268 }
3269#endif
2462 3270
2463 postfork = 0; 3271 postfork = 0;
2464} 3272}
2465 3273
2466#if EV_MULTIPLICITY 3274#if EV_MULTIPLICITY
2467 3275
3276ecb_cold
2468struct ev_loop * ecb_cold 3277struct ev_loop *
2469ev_loop_new (unsigned int flags) 3278ev_loop_new (unsigned int flags) EV_NOEXCEPT
2470{ 3279{
2471 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3280 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2472 3281
2473 memset (EV_A, 0, sizeof (struct ev_loop)); 3282 memset (EV_A, 0, sizeof (struct ev_loop));
2474 loop_init (EV_A_ flags); 3283 loop_init (EV_A_ flags);
… …
2481} 3290}
2482 3291
2483#endif /* multiplicity */ 3292#endif /* multiplicity */
2484 3293
2485#if EV_VERIFY 3294#if EV_VERIFY
2486static void noinline ecb_cold 3295ecb_noinline ecb_cold
3296static void
2487verify_watcher (EV_P_ W w) 3297verify_watcher (EV_P_ W w)
2488{ 3298{
2489 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));
2490 3300
2491 if (w->pending) 3301 if (w->pending)
2492 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));
2493} 3303}
2494 3304
2495static void noinline ecb_cold 3305ecb_noinline ecb_cold
3306static void
2496verify_heap (EV_P_ ANHE *heap, int N) 3307verify_heap (EV_P_ ANHE *heap, int N)
2497{ 3308{
2498 int i; 3309 int i;
2499 3310
2500 for (i = HEAP0; i < N + HEAP0; ++i) 3311 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2505 3316
2506 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3317 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2507 } 3318 }
2508} 3319}
2509 3320
2510static void noinline ecb_cold 3321ecb_noinline ecb_cold
3322static void
2511array_verify (EV_P_ W *ws, int cnt) 3323array_verify (EV_P_ W *ws, int cnt)
2512{ 3324{
2513 while (cnt--) 3325 while (cnt--)
2514 { 3326 {
2515 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3327 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2518} 3330}
2519#endif 3331#endif
2520 3332
2521#if EV_FEATURE_API 3333#if EV_FEATURE_API
2522void ecb_cold 3334void ecb_cold
2523ev_verify (EV_P) 3335ev_verify (EV_P) EV_NOEXCEPT
2524{ 3336{
2525#if EV_VERIFY 3337#if EV_VERIFY
2526 int i; 3338 int i;
2527 WL w; 3339 WL w, w2;
2528 3340
2529 assert (activecnt >= -1); 3341 assert (activecnt >= -1);
2530 3342
2531 assert (fdchangemax >= fdchangecnt); 3343 assert (fdchangemax >= fdchangecnt);
2532 for (i = 0; i < fdchangecnt; ++i) 3344 for (i = 0; i < fdchangecnt; ++i)
2533 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3345 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2534 3346
2535 assert (anfdmax >= 0); 3347 assert (anfdmax >= 0);
2536 for (i = 0; i < anfdmax; ++i) 3348 for (i = 0; i < anfdmax; ++i)
3349 {
3350 int j = 0;
3351
2537 for (w = anfds [i].head; w; w = w->next) 3352 for (w = w2 = anfds [i].head; w; w = w->next)
2538 { 3353 {
2539 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
2540 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));
2541 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));
2542 } 3364 }
3365 }
2543 3366
2544 assert (timermax >= timercnt); 3367 assert (timermax >= timercnt);
2545 verify_heap (EV_A_ timers, timercnt); 3368 verify_heap (EV_A_ timers, timercnt);
2546 3369
2547#if EV_PERIODIC_ENABLE 3370#if EV_PERIODIC_ENABLE
… …
2593#endif 3416#endif
2594} 3417}
2595#endif 3418#endif
2596 3419
2597#if EV_MULTIPLICITY 3420#if EV_MULTIPLICITY
3421ecb_cold
2598struct ev_loop * ecb_cold 3422struct ev_loop *
2599#else 3423#else
2600int 3424int
2601#endif 3425#endif
2602ev_default_loop (unsigned int flags) 3426ev_default_loop (unsigned int flags) EV_NOEXCEPT
2603{ 3427{
2604 if (!ev_default_loop_ptr) 3428 if (!ev_default_loop_ptr)
2605 { 3429 {
2606#if EV_MULTIPLICITY 3430#if EV_MULTIPLICITY
2607 EV_P = ev_default_loop_ptr = &default_loop_struct; 3431 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2626 3450
2627 return ev_default_loop_ptr; 3451 return ev_default_loop_ptr;
2628} 3452}
2629 3453
2630void 3454void
2631ev_loop_fork (EV_P) 3455ev_loop_fork (EV_P) EV_NOEXCEPT
2632{ 3456{
2633 postfork = 1; /* must be in line with ev_default_fork */ 3457 postfork = 1;
2634} 3458}
2635 3459
2636/*****************************************************************************/ 3460/*****************************************************************************/
2637 3461
2638void 3462void
… …
2640{ 3464{
2641 EV_CB_INVOKE ((W)w, revents); 3465 EV_CB_INVOKE ((W)w, revents);
2642} 3466}
2643 3467
2644unsigned int 3468unsigned int
2645ev_pending_count (EV_P) 3469ev_pending_count (EV_P) EV_NOEXCEPT
2646{ 3470{
2647 int pri; 3471 int pri;
2648 unsigned int count = 0; 3472 unsigned int count = 0;
2649 3473
2650 for (pri = NUMPRI; pri--; ) 3474 for (pri = NUMPRI; pri--; )
2651 count += pendingcnt [pri]; 3475 count += pendingcnt [pri];
2652 3476
2653 return count; 3477 return count;
2654} 3478}
2655 3479
2656void noinline 3480ecb_noinline
3481void
2657ev_invoke_pending (EV_P) 3482ev_invoke_pending (EV_P)
2658{ 3483{
2659 int pri; 3484 pendingpri = NUMPRI;
2660 3485
2661 for (pri = NUMPRI; pri--; ) 3486 do
3487 {
3488 --pendingpri;
3489
3490 /* pendingpri possibly gets modified in the inner loop */
2662 while (pendingcnt [pri]) 3491 while (pendingcnt [pendingpri])
2663 { 3492 {
2664 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3493 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2665 3494
2666 p->w->pending = 0; 3495 p->w->pending = 0;
2667 EV_CB_INVOKE (p->w, p->events); 3496 EV_CB_INVOKE (p->w, p->events);
2668 EV_FREQUENT_CHECK; 3497 EV_FREQUENT_CHECK;
2669 } 3498 }
3499 }
3500 while (pendingpri);
2670} 3501}
2671 3502
2672#if EV_IDLE_ENABLE 3503#if EV_IDLE_ENABLE
2673/* make idle watchers pending. this handles the "call-idle */ 3504/* make idle watchers pending. this handles the "call-idle */
2674/* only when higher priorities are idle" logic */ 3505/* only when higher priorities are idle" logic */
2675inline_size void 3506inline_size void
2676idle_reify (EV_P) 3507idle_reify (EV_P)
2677{ 3508{
2678 if (expect_false (idleall)) 3509 if (ecb_expect_false (idleall))
2679 { 3510 {
2680 int pri; 3511 int pri;
2681 3512
2682 for (pri = NUMPRI; pri--; ) 3513 for (pri = NUMPRI; pri--; )
2683 { 3514 {
… …
2732 } 3563 }
2733} 3564}
2734 3565
2735#if EV_PERIODIC_ENABLE 3566#if EV_PERIODIC_ENABLE
2736 3567
2737static void noinline 3568ecb_noinline
3569static void
2738periodic_recalc (EV_P_ ev_periodic *w) 3570periodic_recalc (EV_P_ ev_periodic *w)
2739{ 3571{
2740 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3572 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2741 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);
2742 3574
… …
2744 while (at <= ev_rt_now) 3576 while (at <= ev_rt_now)
2745 { 3577 {
2746 ev_tstamp nat = at + w->interval; 3578 ev_tstamp nat = at + w->interval;
2747 3579
2748 /* when resolution fails us, we use ev_rt_now */ 3580 /* when resolution fails us, we use ev_rt_now */
2749 if (expect_false (nat == at)) 3581 if (ecb_expect_false (nat == at))
2750 { 3582 {
2751 at = ev_rt_now; 3583 at = ev_rt_now;
2752 break; 3584 break;
2753 } 3585 }
2754 3586
… …
2764{ 3596{
2765 EV_FREQUENT_CHECK; 3597 EV_FREQUENT_CHECK;
2766 3598
2767 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3599 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2768 { 3600 {
2769 int feed_count = 0;
2770
2771 do 3601 do
2772 { 3602 {
2773 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3603 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2774 3604
2775 /*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)));*/
… …
2802 } 3632 }
2803} 3633}
2804 3634
2805/* simply recalculate all periodics */ 3635/* simply recalculate all periodics */
2806/* 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? */
2807static void noinline ecb_cold 3637ecb_noinline ecb_cold
3638static void
2808periodics_reschedule (EV_P) 3639periodics_reschedule (EV_P)
2809{ 3640{
2810 int i; 3641 int i;
2811 3642
2812 /* adjust periodics after time jump */ 3643 /* adjust periodics after time jump */
… …
2825 reheap (periodics, periodiccnt); 3656 reheap (periodics, periodiccnt);
2826} 3657}
2827#endif 3658#endif
2828 3659
2829/* adjust all timers by a given offset */ 3660/* adjust all timers by a given offset */
2830static void noinline ecb_cold 3661ecb_noinline ecb_cold
3662static void
2831timers_reschedule (EV_P_ ev_tstamp adjust) 3663timers_reschedule (EV_P_ ev_tstamp adjust)
2832{ 3664{
2833 int i; 3665 int i;
2834 3666
2835 for (i = 0; i < timercnt; ++i) 3667 for (i = 0; i < timercnt; ++i)
… …
2844/* also detect if there was a timejump, and act accordingly */ 3676/* also detect if there was a timejump, and act accordingly */
2845inline_speed void 3677inline_speed void
2846time_update (EV_P_ ev_tstamp max_block) 3678time_update (EV_P_ ev_tstamp max_block)
2847{ 3679{
2848#if EV_USE_MONOTONIC 3680#if EV_USE_MONOTONIC
2849 if (expect_true (have_monotonic)) 3681 if (ecb_expect_true (have_monotonic))
2850 { 3682 {
2851 int i; 3683 int i;
2852 ev_tstamp odiff = rtmn_diff; 3684 ev_tstamp odiff = rtmn_diff;
2853 3685
2854 mn_now = get_clock (); 3686 mn_now = get_clock ();
2855 3687
2856 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3688 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2857 /* interpolate in the meantime */ 3689 /* interpolate in the meantime */
2858 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3690 if (ecb_expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
2859 { 3691 {
2860 ev_rt_now = rtmn_diff + mn_now; 3692 ev_rt_now = rtmn_diff + mn_now;
2861 return; 3693 return;
2862 } 3694 }
2863 3695
… …
2877 ev_tstamp diff; 3709 ev_tstamp diff;
2878 rtmn_diff = ev_rt_now - mn_now; 3710 rtmn_diff = ev_rt_now - mn_now;
2879 3711
2880 diff = odiff - rtmn_diff; 3712 diff = odiff - rtmn_diff;
2881 3713
2882 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP)) 3714 if (ecb_expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2883 return; /* all is well */ 3715 return; /* all is well */
2884 3716
2885 ev_rt_now = ev_time (); 3717 ev_rt_now = ev_time ();
2886 mn_now = get_clock (); 3718 mn_now = get_clock ();
2887 now_floor = mn_now; 3719 now_floor = mn_now;
… …
2896 else 3728 else
2897#endif 3729#endif
2898 { 3730 {
2899 ev_rt_now = ev_time (); 3731 ev_rt_now = ev_time ();
2900 3732
2901 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))
2902 { 3734 {
2903 /* 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 */
2904 timers_reschedule (EV_A_ ev_rt_now - mn_now); 3736 timers_reschedule (EV_A_ ev_rt_now - mn_now);
2905#if EV_PERIODIC_ENABLE 3737#if EV_PERIODIC_ENABLE
2906 periodics_reschedule (EV_A); 3738 periodics_reschedule (EV_A);
… …
2909 3741
2910 mn_now = ev_rt_now; 3742 mn_now = ev_rt_now;
2911 } 3743 }
2912} 3744}
2913 3745
2914void 3746int
2915ev_run (EV_P_ int flags) 3747ev_run (EV_P_ int flags)
2916{ 3748{
2917#if EV_FEATURE_API 3749#if EV_FEATURE_API
2918 ++loop_depth; 3750 ++loop_depth;
2919#endif 3751#endif
… …
2929#if EV_VERIFY >= 2 3761#if EV_VERIFY >= 2
2930 ev_verify (EV_A); 3762 ev_verify (EV_A);
2931#endif 3763#endif
2932 3764
2933#ifndef _WIN32 3765#ifndef _WIN32
2934 if (expect_false (curpid)) /* penalise the forking check even more */ 3766 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
2935 if (expect_false (getpid () != curpid)) 3767 if (ecb_expect_false (getpid () != curpid))
2936 { 3768 {
2937 curpid = getpid (); 3769 curpid = getpid ();
2938 postfork = 1; 3770 postfork = 1;
2939 } 3771 }
2940#endif 3772#endif
2941 3773
2942#if EV_FORK_ENABLE 3774#if EV_FORK_ENABLE
2943 /* we might have forked, so queue fork handlers */ 3775 /* we might have forked, so queue fork handlers */
2944 if (expect_false (postfork)) 3776 if (ecb_expect_false (postfork))
2945 if (forkcnt) 3777 if (forkcnt)
2946 { 3778 {
2947 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3779 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2948 EV_INVOKE_PENDING; 3780 EV_INVOKE_PENDING;
2949 } 3781 }
2950#endif 3782#endif
2951 3783
2952#if EV_PREPARE_ENABLE 3784#if EV_PREPARE_ENABLE
2953 /* queue prepare watchers (and execute them) */ 3785 /* queue prepare watchers (and execute them) */
2954 if (expect_false (preparecnt)) 3786 if (ecb_expect_false (preparecnt))
2955 { 3787 {
2956 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3788 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2957 EV_INVOKE_PENDING; 3789 EV_INVOKE_PENDING;
2958 } 3790 }
2959#endif 3791#endif
2960 3792
2961 if (expect_false (loop_done)) 3793 if (ecb_expect_false (loop_done))
2962 break; 3794 break;
2963 3795
2964 /* we might have forked, so reify kernel state if necessary */ 3796 /* we might have forked, so reify kernel state if necessary */
2965 if (expect_false (postfork)) 3797 if (ecb_expect_false (postfork))
2966 loop_fork (EV_A); 3798 loop_fork (EV_A);
2967 3799
2968 /* update fd-related kernel structures */ 3800 /* update fd-related kernel structures */
2969 fd_reify (EV_A); 3801 fd_reify (EV_A);
2970 3802
… …
2982 /* from now on, we want a pipe-wake-up */ 3814 /* from now on, we want a pipe-wake-up */
2983 pipe_write_wanted = 1; 3815 pipe_write_wanted = 1;
2984 3816
2985 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 */
2986 3818
2987 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) 3819 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2988 { 3820 {
2989 waittime = MAX_BLOCKTIME; 3821 waittime = MAX_BLOCKTIME;
2990 3822
2991 if (timercnt) 3823 if (timercnt)
2992 { 3824 {
… …
3001 if (waittime > to) waittime = to; 3833 if (waittime > to) waittime = to;
3002 } 3834 }
3003#endif 3835#endif
3004 3836
3005 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3837 /* don't let timeouts decrease the waittime below timeout_blocktime */
3006 if (expect_false (waittime < timeout_blocktime)) 3838 if (ecb_expect_false (waittime < timeout_blocktime))
3007 waittime = timeout_blocktime; 3839 waittime = timeout_blocktime;
3008 3840
3009 /* 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 */
3010 /* to pass a minimum nonzero value to the backend */ 3842 /* to pass a minimum nonzero value to the backend */
3011 if (expect_false (waittime < backend_mintime)) 3843 if (ecb_expect_false (waittime < backend_mintime))
3012 waittime = backend_mintime; 3844 waittime = backend_mintime;
3013 3845
3014 /* extra check because io_blocktime is commonly 0 */ 3846 /* extra check because io_blocktime is commonly 0 */
3015 if (expect_false (io_blocktime)) 3847 if (ecb_expect_false (io_blocktime))
3016 { 3848 {
3017 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3849 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3018 3850
3019 if (sleeptime > waittime - backend_mintime) 3851 if (sleeptime > waittime - backend_mintime)
3020 sleeptime = waittime - backend_mintime; 3852 sleeptime = waittime - backend_mintime;
3021 3853
3022 if (expect_true (sleeptime > 0.)) 3854 if (ecb_expect_true (sleeptime > 0.))
3023 { 3855 {
3024 ev_sleep (sleeptime); 3856 ev_sleep (sleeptime);
3025 waittime -= sleeptime; 3857 waittime -= sleeptime;
3026 } 3858 }
3027 } 3859 }
… …
3034 backend_poll (EV_A_ waittime); 3866 backend_poll (EV_A_ waittime);
3035 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3867 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3036 3868
3037 pipe_write_wanted = 0; /* just an optimisation, no fence needed */ 3869 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3038 3870
3871 ECB_MEMORY_FENCE_ACQUIRE;
3039 if (pipe_write_skipped) 3872 if (pipe_write_skipped)
3040 { 3873 {
3041 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)));
3042 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3875 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3043 } 3876 }
3044 3877
3045
3046 /* update ev_rt_now, do magic */ 3878 /* update ev_rt_now, do magic */
3047 time_update (EV_A_ waittime + sleeptime); 3879 time_update (EV_A_ waittime + sleeptime);
3048 } 3880 }
3049 3881
3050 /* queue pending timers and reschedule them */ 3882 /* queue pending timers and reschedule them */
… …
3058 idle_reify (EV_A); 3890 idle_reify (EV_A);
3059#endif 3891#endif
3060 3892
3061#if EV_CHECK_ENABLE 3893#if EV_CHECK_ENABLE
3062 /* queue check watchers, to be executed first */ 3894 /* queue check watchers, to be executed first */
3063 if (expect_false (checkcnt)) 3895 if (ecb_expect_false (checkcnt))
3064 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3896 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3065#endif 3897#endif
3066 3898
3067 EV_INVOKE_PENDING; 3899 EV_INVOKE_PENDING;
3068 } 3900 }
3069 while (expect_true ( 3901 while (ecb_expect_true (
3070 activecnt 3902 activecnt
3071 && !loop_done 3903 && !loop_done
3072 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) 3904 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
3073 )); 3905 ));
3074 3906
… …
3076 loop_done = EVBREAK_CANCEL; 3908 loop_done = EVBREAK_CANCEL;
3077 3909
3078#if EV_FEATURE_API 3910#if EV_FEATURE_API
3079 --loop_depth; 3911 --loop_depth;
3080#endif 3912#endif
3081}
3082 3913
3914 return activecnt;
3915}
3916
3083void 3917void
3084ev_break (EV_P_ int how) 3918ev_break (EV_P_ int how) EV_NOEXCEPT
3085{ 3919{
3086 loop_done = how; 3920 loop_done = how;
3087} 3921}
3088 3922
3089void 3923void
3090ev_ref (EV_P) 3924ev_ref (EV_P) EV_NOEXCEPT
3091{ 3925{
3092 ++activecnt; 3926 ++activecnt;
3093} 3927}
3094 3928
3095void 3929void
3096ev_unref (EV_P) 3930ev_unref (EV_P) EV_NOEXCEPT
3097{ 3931{
3098 --activecnt; 3932 --activecnt;
3099} 3933}
3100 3934
3101void 3935void
3102ev_now_update (EV_P) 3936ev_now_update (EV_P) EV_NOEXCEPT
3103{ 3937{
3104 time_update (EV_A_ 1e100); 3938 time_update (EV_A_ 1e100);
3105} 3939}
3106 3940
3107void 3941void
3108ev_suspend (EV_P) 3942ev_suspend (EV_P) EV_NOEXCEPT
3109{ 3943{
3110 ev_now_update (EV_A); 3944 ev_now_update (EV_A);
3111} 3945}
3112 3946
3113void 3947void
3114ev_resume (EV_P) 3948ev_resume (EV_P) EV_NOEXCEPT
3115{ 3949{
3116 ev_tstamp mn_prev = mn_now; 3950 ev_tstamp mn_prev = mn_now;
3117 3951
3118 ev_now_update (EV_A); 3952 ev_now_update (EV_A);
3119 timers_reschedule (EV_A_ mn_now - mn_prev); 3953 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
3136inline_size void 3970inline_size void
3137wlist_del (WL *head, WL elem) 3971wlist_del (WL *head, WL elem)
3138{ 3972{
3139 while (*head) 3973 while (*head)
3140 { 3974 {
3141 if (expect_true (*head == elem)) 3975 if (ecb_expect_true (*head == elem))
3142 { 3976 {
3143 *head = elem->next; 3977 *head = elem->next;
3144 break; 3978 break;
3145 } 3979 }
3146 3980
… …
3158 w->pending = 0; 3992 w->pending = 0;
3159 } 3993 }
3160} 3994}
3161 3995
3162int 3996int
3163ev_clear_pending (EV_P_ void *w) 3997ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
3164{ 3998{
3165 W w_ = (W)w; 3999 W w_ = (W)w;
3166 int pending = w_->pending; 4000 int pending = w_->pending;
3167 4001
3168 if (expect_true (pending)) 4002 if (ecb_expect_true (pending))
3169 { 4003 {
3170 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4004 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3171 p->w = (W)&pending_w; 4005 p->w = (W)&pending_w;
3172 w_->pending = 0; 4006 w_->pending = 0;
3173 return p->events; 4007 return p->events;
… …
3200 w->active = 0; 4034 w->active = 0;
3201} 4035}
3202 4036
3203/*****************************************************************************/ 4037/*****************************************************************************/
3204 4038
3205void noinline 4039ecb_noinline
4040void
3206ev_io_start (EV_P_ ev_io *w) 4041ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
3207{ 4042{
3208 int fd = w->fd; 4043 int fd = w->fd;
3209 4044
3210 if (expect_false (ev_is_active (w))) 4045 if (ecb_expect_false (ev_is_active (w)))
3211 return; 4046 return;
3212 4047
3213 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4048 assert (("libev: ev_io_start called with negative fd", fd >= 0));
3214 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))));
3215 4050
4051#if EV_VERIFY >= 2
4052 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4053#endif
3216 EV_FREQUENT_CHECK; 4054 EV_FREQUENT_CHECK;
3217 4055
3218 ev_start (EV_A_ (W)w, 1); 4056 ev_start (EV_A_ (W)w, 1);
3219 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4057 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
3220 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));
3221 4062
3222 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);
3223 w->events &= ~EV__IOFDSET; 4064 w->events &= ~EV__IOFDSET;
3224 4065
3225 EV_FREQUENT_CHECK; 4066 EV_FREQUENT_CHECK;
3226} 4067}
3227 4068
3228void noinline 4069ecb_noinline
4070void
3229ev_io_stop (EV_P_ ev_io *w) 4071ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
3230{ 4072{
3231 clear_pending (EV_A_ (W)w); 4073 clear_pending (EV_A_ (W)w);
3232 if (expect_false (!ev_is_active (w))) 4074 if (ecb_expect_false (!ev_is_active (w)))
3233 return; 4075 return;
3234 4076
3235 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));
3236 4078
4079#if EV_VERIFY >= 2
4080 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4081#endif
3237 EV_FREQUENT_CHECK; 4082 EV_FREQUENT_CHECK;
3238 4083
3239 wlist_del (&anfds[w->fd].head, (WL)w); 4084 wlist_del (&anfds[w->fd].head, (WL)w);
3240 ev_stop (EV_A_ (W)w); 4085 ev_stop (EV_A_ (W)w);
3241 4086
3242 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 4087 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3243 4088
3244 EV_FREQUENT_CHECK; 4089 EV_FREQUENT_CHECK;
3245} 4090}
3246 4091
3247void noinline 4092ecb_noinline
4093void
3248ev_timer_start (EV_P_ ev_timer *w) 4094ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
3249{ 4095{
3250 if (expect_false (ev_is_active (w))) 4096 if (ecb_expect_false (ev_is_active (w)))
3251 return; 4097 return;
3252 4098
3253 ev_at (w) += mn_now; 4099 ev_at (w) += mn_now;
3254 4100
3255 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.));
3256 4102
3257 EV_FREQUENT_CHECK; 4103 EV_FREQUENT_CHECK;
3258 4104
3259 ++timercnt; 4105 ++timercnt;
3260 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4106 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
3261 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4107 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
3262 ANHE_w (timers [ev_active (w)]) = (WT)w; 4108 ANHE_w (timers [ev_active (w)]) = (WT)w;
3263 ANHE_at_cache (timers [ev_active (w)]); 4109 ANHE_at_cache (timers [ev_active (w)]);
3264 upheap (timers, ev_active (w)); 4110 upheap (timers, ev_active (w));
3265 4111
3266 EV_FREQUENT_CHECK; 4112 EV_FREQUENT_CHECK;
3267 4113
3268 /*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));*/
3269} 4115}
3270 4116
3271void noinline 4117ecb_noinline
4118void
3272ev_timer_stop (EV_P_ ev_timer *w) 4119ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
3273{ 4120{
3274 clear_pending (EV_A_ (W)w); 4121 clear_pending (EV_A_ (W)w);
3275 if (expect_false (!ev_is_active (w))) 4122 if (ecb_expect_false (!ev_is_active (w)))
3276 return; 4123 return;
3277 4124
3278 EV_FREQUENT_CHECK; 4125 EV_FREQUENT_CHECK;
3279 4126
3280 { 4127 {
… …
3282 4129
3283 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));
3284 4131
3285 --timercnt; 4132 --timercnt;
3286 4133
3287 if (expect_true (active < timercnt + HEAP0)) 4134 if (ecb_expect_true (active < timercnt + HEAP0))
3288 { 4135 {
3289 timers [active] = timers [timercnt + HEAP0]; 4136 timers [active] = timers [timercnt + HEAP0];
3290 adjustheap (timers, timercnt, active); 4137 adjustheap (timers, timercnt, active);
3291 } 4138 }
3292 } 4139 }
… …
3296 ev_stop (EV_A_ (W)w); 4143 ev_stop (EV_A_ (W)w);
3297 4144
3298 EV_FREQUENT_CHECK; 4145 EV_FREQUENT_CHECK;
3299} 4146}
3300 4147
3301void noinline 4148ecb_noinline
4149void
3302ev_timer_again (EV_P_ ev_timer *w) 4150ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
3303{ 4151{
3304 EV_FREQUENT_CHECK; 4152 EV_FREQUENT_CHECK;
3305 4153
3306 clear_pending (EV_A_ (W)w); 4154 clear_pending (EV_A_ (W)w);
3307 4155
… …
3324 4172
3325 EV_FREQUENT_CHECK; 4173 EV_FREQUENT_CHECK;
3326} 4174}
3327 4175
3328ev_tstamp 4176ev_tstamp
3329ev_timer_remaining (EV_P_ ev_timer *w) 4177ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
3330{ 4178{
3331 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4179 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3332} 4180}
3333 4181
3334#if EV_PERIODIC_ENABLE 4182#if EV_PERIODIC_ENABLE
3335void noinline 4183ecb_noinline
4184void
3336ev_periodic_start (EV_P_ ev_periodic *w) 4185ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
3337{ 4186{
3338 if (expect_false (ev_is_active (w))) 4187 if (ecb_expect_false (ev_is_active (w)))
3339 return; 4188 return;
3340 4189
3341 if (w->reschedule_cb) 4190 if (w->reschedule_cb)
3342 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4191 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
3343 else if (w->interval) 4192 else if (w->interval)
… …
3350 4199
3351 EV_FREQUENT_CHECK; 4200 EV_FREQUENT_CHECK;
3352 4201
3353 ++periodiccnt; 4202 ++periodiccnt;
3354 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4203 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
3355 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4204 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
3356 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4205 ANHE_w (periodics [ev_active (w)]) = (WT)w;
3357 ANHE_at_cache (periodics [ev_active (w)]); 4206 ANHE_at_cache (periodics [ev_active (w)]);
3358 upheap (periodics, ev_active (w)); 4207 upheap (periodics, ev_active (w));
3359 4208
3360 EV_FREQUENT_CHECK; 4209 EV_FREQUENT_CHECK;
3361 4210
3362 /*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));*/
3363} 4212}
3364 4213
3365void noinline 4214ecb_noinline
4215void
3366ev_periodic_stop (EV_P_ ev_periodic *w) 4216ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
3367{ 4217{
3368 clear_pending (EV_A_ (W)w); 4218 clear_pending (EV_A_ (W)w);
3369 if (expect_false (!ev_is_active (w))) 4219 if (ecb_expect_false (!ev_is_active (w)))
3370 return; 4220 return;
3371 4221
3372 EV_FREQUENT_CHECK; 4222 EV_FREQUENT_CHECK;
3373 4223
3374 { 4224 {
… …
3376 4226
3377 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));
3378 4228
3379 --periodiccnt; 4229 --periodiccnt;
3380 4230
3381 if (expect_true (active < periodiccnt + HEAP0)) 4231 if (ecb_expect_true (active < periodiccnt + HEAP0))
3382 { 4232 {
3383 periodics [active] = periodics [periodiccnt + HEAP0]; 4233 periodics [active] = periodics [periodiccnt + HEAP0];
3384 adjustheap (periodics, periodiccnt, active); 4234 adjustheap (periodics, periodiccnt, active);
3385 } 4235 }
3386 } 4236 }
… …
3388 ev_stop (EV_A_ (W)w); 4238 ev_stop (EV_A_ (W)w);
3389 4239
3390 EV_FREQUENT_CHECK; 4240 EV_FREQUENT_CHECK;
3391} 4241}
3392 4242
3393void noinline 4243ecb_noinline
4244void
3394ev_periodic_again (EV_P_ ev_periodic *w) 4245ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
3395{ 4246{
3396 /* TODO: use adjustheap and recalculation */ 4247 /* TODO: use adjustheap and recalculation */
3397 ev_periodic_stop (EV_A_ w); 4248 ev_periodic_stop (EV_A_ w);
3398 ev_periodic_start (EV_A_ w); 4249 ev_periodic_start (EV_A_ w);
3399} 4250}
… …
3403# define SA_RESTART 0 4254# define SA_RESTART 0
3404#endif 4255#endif
3405 4256
3406#if EV_SIGNAL_ENABLE 4257#if EV_SIGNAL_ENABLE
3407 4258
3408void noinline 4259ecb_noinline
4260void
3409ev_signal_start (EV_P_ ev_signal *w) 4261ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
3410{ 4262{
3411 if (expect_false (ev_is_active (w))) 4263 if (ecb_expect_false (ev_is_active (w)))
3412 return; 4264 return;
3413 4265
3414 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));
3415 4267
3416#if EV_MULTIPLICITY 4268#if EV_MULTIPLICITY
3417 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",
3418 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4270 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3419 4271
3420 signals [w->signum - 1].loop = EV_A; 4272 signals [w->signum - 1].loop = EV_A;
4273 ECB_MEMORY_FENCE_RELEASE;
3421#endif 4274#endif
3422 4275
3423 EV_FREQUENT_CHECK; 4276 EV_FREQUENT_CHECK;
3424 4277
3425#if EV_USE_SIGNALFD 4278#if EV_USE_SIGNALFD
… …
3484 } 4337 }
3485 4338
3486 EV_FREQUENT_CHECK; 4339 EV_FREQUENT_CHECK;
3487} 4340}
3488 4341
3489void noinline 4342ecb_noinline
4343void
3490ev_signal_stop (EV_P_ ev_signal *w) 4344ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
3491{ 4345{
3492 clear_pending (EV_A_ (W)w); 4346 clear_pending (EV_A_ (W)w);
3493 if (expect_false (!ev_is_active (w))) 4347 if (ecb_expect_false (!ev_is_active (w)))
3494 return; 4348 return;
3495 4349
3496 EV_FREQUENT_CHECK; 4350 EV_FREQUENT_CHECK;
3497 4351
3498 wlist_del (&signals [w->signum - 1].head, (WL)w); 4352 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
3526#endif 4380#endif
3527 4381
3528#if EV_CHILD_ENABLE 4382#if EV_CHILD_ENABLE
3529 4383
3530void 4384void
3531ev_child_start (EV_P_ ev_child *w) 4385ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
3532{ 4386{
3533#if EV_MULTIPLICITY 4387#if EV_MULTIPLICITY
3534 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));
3535#endif 4389#endif
3536 if (expect_false (ev_is_active (w))) 4390 if (ecb_expect_false (ev_is_active (w)))
3537 return; 4391 return;
3538 4392
3539 EV_FREQUENT_CHECK; 4393 EV_FREQUENT_CHECK;
3540 4394
3541 ev_start (EV_A_ (W)w, 1); 4395 ev_start (EV_A_ (W)w, 1);
… …
3543 4397
3544 EV_FREQUENT_CHECK; 4398 EV_FREQUENT_CHECK;
3545} 4399}
3546 4400
3547void 4401void
3548ev_child_stop (EV_P_ ev_child *w) 4402ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
3549{ 4403{
3550 clear_pending (EV_A_ (W)w); 4404 clear_pending (EV_A_ (W)w);
3551 if (expect_false (!ev_is_active (w))) 4405 if (ecb_expect_false (!ev_is_active (w)))
3552 return; 4406 return;
3553 4407
3554 EV_FREQUENT_CHECK; 4408 EV_FREQUENT_CHECK;
3555 4409
3556 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); 4410 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
… …
3570 4424
3571#define DEF_STAT_INTERVAL 5.0074891 4425#define DEF_STAT_INTERVAL 5.0074891
3572#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4426#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3573#define MIN_STAT_INTERVAL 0.1074891 4427#define MIN_STAT_INTERVAL 0.1074891
3574 4428
3575static 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);
3576 4430
3577#if EV_USE_INOTIFY 4431#if EV_USE_INOTIFY
3578 4432
3579/* 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 */
3580# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4434# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3581 4435
3582static void noinline 4436ecb_noinline
4437static void
3583infy_add (EV_P_ ev_stat *w) 4438infy_add (EV_P_ ev_stat *w)
3584{ 4439{
3585 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);
3586 4444
3587 if (w->wd >= 0) 4445 if (w->wd >= 0)
3588 { 4446 {
3589 struct statfs sfs; 4447 struct statfs sfs;
3590 4448
… …
3594 4452
3595 if (!fs_2625) 4453 if (!fs_2625)
3596 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4454 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3597 else if (!statfs (w->path, &sfs) 4455 else if (!statfs (w->path, &sfs)
3598 && (sfs.f_type == 0x1373 /* devfs */ 4456 && (sfs.f_type == 0x1373 /* devfs */
4457 || sfs.f_type == 0x4006 /* fat */
4458 || sfs.f_type == 0x4d44 /* msdos */
3599 || 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 */
3600 || sfs.f_type == 0x3153464a /* jfs */ 4463 || sfs.f_type == 0x3153464a /* jfs */
4464 || sfs.f_type == 0x9123683e /* btrfs */
3601 || sfs.f_type == 0x52654973 /* reiser3 */ 4465 || sfs.f_type == 0x52654973 /* reiser3 */
3602 || sfs.f_type == 0x01021994 /* tempfs */ 4466 || sfs.f_type == 0x01021994 /* tmpfs */
3603 || sfs.f_type == 0x58465342 /* xfs */)) 4467 || sfs.f_type == 0x58465342 /* xfs */))
3604 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4468 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3605 else 4469 else
3606 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 */
3607 } 4471 }
… …
3642 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4506 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3643 ev_timer_again (EV_A_ &w->timer); 4507 ev_timer_again (EV_A_ &w->timer);
3644 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4508 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3645} 4509}
3646 4510
3647static void noinline 4511ecb_noinline
4512static void
3648infy_del (EV_P_ ev_stat *w) 4513infy_del (EV_P_ ev_stat *w)
3649{ 4514{
3650 int slot; 4515 int slot;
3651 int wd = w->wd; 4516 int wd = w->wd;
3652 4517
… …
3659 4524
3660 /* remove this watcher, if others are watching it, they will rearm */ 4525 /* remove this watcher, if others are watching it, they will rearm */
3661 inotify_rm_watch (fs_fd, wd); 4526 inotify_rm_watch (fs_fd, wd);
3662} 4527}
3663 4528
3664static void noinline 4529ecb_noinline
4530static void
3665infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4531infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3666{ 4532{
3667 if (slot < 0) 4533 if (slot < 0)
3668 /* overflow, need to check for all hash slots */ 4534 /* overflow, need to check for all hash slots */
3669 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4535 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3705 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4571 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3706 ofs += sizeof (struct inotify_event) + ev->len; 4572 ofs += sizeof (struct inotify_event) + ev->len;
3707 } 4573 }
3708} 4574}
3709 4575
3710inline_size void ecb_cold 4576inline_size ecb_cold
4577void
3711ev_check_2625 (EV_P) 4578ev_check_2625 (EV_P)
3712{ 4579{
3713 /* kernels < 2.6.25 are borked 4580 /* kernels < 2.6.25 are borked
3714 * 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
3715 */ 4582 */
… …
3720} 4587}
3721 4588
3722inline_size int 4589inline_size int
3723infy_newfd (void) 4590infy_newfd (void)
3724{ 4591{
3725#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4592#if defined IN_CLOEXEC && defined IN_NONBLOCK
3726 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4593 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3727 if (fd >= 0) 4594 if (fd >= 0)
3728 return fd; 4595 return fd;
3729#endif 4596#endif
3730 return inotify_init (); 4597 return inotify_init ();
… …
3805#else 4672#else
3806# define EV_LSTAT(p,b) lstat (p, b) 4673# define EV_LSTAT(p,b) lstat (p, b)
3807#endif 4674#endif
3808 4675
3809void 4676void
3810ev_stat_stat (EV_P_ ev_stat *w) 4677ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3811{ 4678{
3812 if (lstat (w->path, &w->attr) < 0) 4679 if (lstat (w->path, &w->attr) < 0)
3813 w->attr.st_nlink = 0; 4680 w->attr.st_nlink = 0;
3814 else if (!w->attr.st_nlink) 4681 else if (!w->attr.st_nlink)
3815 w->attr.st_nlink = 1; 4682 w->attr.st_nlink = 1;
3816} 4683}
3817 4684
3818static void noinline 4685ecb_noinline
4686static void
3819stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4687stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3820{ 4688{
3821 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4689 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3822 4690
3823 ev_statdata prev = w->attr; 4691 ev_statdata prev = w->attr;
… …
3854 ev_feed_event (EV_A_ w, EV_STAT); 4722 ev_feed_event (EV_A_ w, EV_STAT);
3855 } 4723 }
3856} 4724}
3857 4725
3858void 4726void
3859ev_stat_start (EV_P_ ev_stat *w) 4727ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3860{ 4728{
3861 if (expect_false (ev_is_active (w))) 4729 if (ecb_expect_false (ev_is_active (w)))
3862 return; 4730 return;
3863 4731
3864 ev_stat_stat (EV_A_ w); 4732 ev_stat_stat (EV_A_ w);
3865 4733
3866 if (w->interval < MIN_STAT_INTERVAL && w->interval) 4734 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
3885 4753
3886 EV_FREQUENT_CHECK; 4754 EV_FREQUENT_CHECK;
3887} 4755}
3888 4756
3889void 4757void
3890ev_stat_stop (EV_P_ ev_stat *w) 4758ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3891{ 4759{
3892 clear_pending (EV_A_ (W)w); 4760 clear_pending (EV_A_ (W)w);
3893 if (expect_false (!ev_is_active (w))) 4761 if (ecb_expect_false (!ev_is_active (w)))
3894 return; 4762 return;
3895 4763
3896 EV_FREQUENT_CHECK; 4764 EV_FREQUENT_CHECK;
3897 4765
3898#if EV_USE_INOTIFY 4766#if EV_USE_INOTIFY
… …
3911} 4779}
3912#endif 4780#endif
3913 4781
3914#if EV_IDLE_ENABLE 4782#if EV_IDLE_ENABLE
3915void 4783void
3916ev_idle_start (EV_P_ ev_idle *w) 4784ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3917{ 4785{
3918 if (expect_false (ev_is_active (w))) 4786 if (ecb_expect_false (ev_is_active (w)))
3919 return; 4787 return;
3920 4788
3921 pri_adjust (EV_A_ (W)w); 4789 pri_adjust (EV_A_ (W)w);
3922 4790
3923 EV_FREQUENT_CHECK; 4791 EV_FREQUENT_CHECK;
… …
3926 int active = ++idlecnt [ABSPRI (w)]; 4794 int active = ++idlecnt [ABSPRI (w)];
3927 4795
3928 ++idleall; 4796 ++idleall;
3929 ev_start (EV_A_ (W)w, active); 4797 ev_start (EV_A_ (W)w, active);
3930 4798
3931 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);
3932 idles [ABSPRI (w)][active - 1] = w; 4800 idles [ABSPRI (w)][active - 1] = w;
3933 } 4801 }
3934 4802
3935 EV_FREQUENT_CHECK; 4803 EV_FREQUENT_CHECK;
3936} 4804}
3937 4805
3938void 4806void
3939ev_idle_stop (EV_P_ ev_idle *w) 4807ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3940{ 4808{
3941 clear_pending (EV_A_ (W)w); 4809 clear_pending (EV_A_ (W)w);
3942 if (expect_false (!ev_is_active (w))) 4810 if (ecb_expect_false (!ev_is_active (w)))
3943 return; 4811 return;
3944 4812
3945 EV_FREQUENT_CHECK; 4813 EV_FREQUENT_CHECK;
3946 4814
3947 { 4815 {
… …
3958} 4826}
3959#endif 4827#endif
3960 4828
3961#if EV_PREPARE_ENABLE 4829#if EV_PREPARE_ENABLE
3962void 4830void
3963ev_prepare_start (EV_P_ ev_prepare *w) 4831ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3964{ 4832{
3965 if (expect_false (ev_is_active (w))) 4833 if (ecb_expect_false (ev_is_active (w)))
3966 return; 4834 return;
3967 4835
3968 EV_FREQUENT_CHECK; 4836 EV_FREQUENT_CHECK;
3969 4837
3970 ev_start (EV_A_ (W)w, ++preparecnt); 4838 ev_start (EV_A_ (W)w, ++preparecnt);
3971 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4839 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3972 prepares [preparecnt - 1] = w; 4840 prepares [preparecnt - 1] = w;
3973 4841
3974 EV_FREQUENT_CHECK; 4842 EV_FREQUENT_CHECK;
3975} 4843}
3976 4844
3977void 4845void
3978ev_prepare_stop (EV_P_ ev_prepare *w) 4846ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3979{ 4847{
3980 clear_pending (EV_A_ (W)w); 4848 clear_pending (EV_A_ (W)w);
3981 if (expect_false (!ev_is_active (w))) 4849 if (ecb_expect_false (!ev_is_active (w)))
3982 return; 4850 return;
3983 4851
3984 EV_FREQUENT_CHECK; 4852 EV_FREQUENT_CHECK;
3985 4853
3986 { 4854 {
… …
3996} 4864}
3997#endif 4865#endif
3998 4866
3999#if EV_CHECK_ENABLE 4867#if EV_CHECK_ENABLE
4000void 4868void
4001ev_check_start (EV_P_ ev_check *w) 4869ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
4002{ 4870{
4003 if (expect_false (ev_is_active (w))) 4871 if (ecb_expect_false (ev_is_active (w)))
4004 return; 4872 return;
4005 4873
4006 EV_FREQUENT_CHECK; 4874 EV_FREQUENT_CHECK;
4007 4875
4008 ev_start (EV_A_ (W)w, ++checkcnt); 4876 ev_start (EV_A_ (W)w, ++checkcnt);
4009 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4877 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
4010 checks [checkcnt - 1] = w; 4878 checks [checkcnt - 1] = w;
4011 4879
4012 EV_FREQUENT_CHECK; 4880 EV_FREQUENT_CHECK;
4013} 4881}
4014 4882
4015void 4883void
4016ev_check_stop (EV_P_ ev_check *w) 4884ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
4017{ 4885{
4018 clear_pending (EV_A_ (W)w); 4886 clear_pending (EV_A_ (W)w);
4019 if (expect_false (!ev_is_active (w))) 4887 if (ecb_expect_false (!ev_is_active (w)))
4020 return; 4888 return;
4021 4889
4022 EV_FREQUENT_CHECK; 4890 EV_FREQUENT_CHECK;
4023 4891
4024 { 4892 {
… …
4033 EV_FREQUENT_CHECK; 4901 EV_FREQUENT_CHECK;
4034} 4902}
4035#endif 4903#endif
4036 4904
4037#if EV_EMBED_ENABLE 4905#if EV_EMBED_ENABLE
4038void noinline 4906ecb_noinline
4907void
4039ev_embed_sweep (EV_P_ ev_embed *w) 4908ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
4040{ 4909{
4041 ev_run (w->other, EVRUN_NOWAIT); 4910 ev_run (w->other, EVRUN_NOWAIT);
4042} 4911}
4043 4912
4044static void 4913static void
… …
4092 ev_idle_stop (EV_A_ idle); 4961 ev_idle_stop (EV_A_ idle);
4093} 4962}
4094#endif 4963#endif
4095 4964
4096void 4965void
4097ev_embed_start (EV_P_ ev_embed *w) 4966ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
4098{ 4967{
4099 if (expect_false (ev_is_active (w))) 4968 if (ecb_expect_false (ev_is_active (w)))
4100 return; 4969 return;
4101 4970
4102 { 4971 {
4103 EV_P = w->other; 4972 EV_P = w->other;
4104 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 ()));
… …
4123 4992
4124 EV_FREQUENT_CHECK; 4993 EV_FREQUENT_CHECK;
4125} 4994}
4126 4995
4127void 4996void
4128ev_embed_stop (EV_P_ ev_embed *w) 4997ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
4129{ 4998{
4130 clear_pending (EV_A_ (W)w); 4999 clear_pending (EV_A_ (W)w);
4131 if (expect_false (!ev_is_active (w))) 5000 if (ecb_expect_false (!ev_is_active (w)))
4132 return; 5001 return;
4133 5002
4134 EV_FREQUENT_CHECK; 5003 EV_FREQUENT_CHECK;
4135 5004
4136 ev_io_stop (EV_A_ &w->io); 5005 ev_io_stop (EV_A_ &w->io);
… …
4143} 5012}
4144#endif 5013#endif
4145 5014
4146#if EV_FORK_ENABLE 5015#if EV_FORK_ENABLE
4147void 5016void
4148ev_fork_start (EV_P_ ev_fork *w) 5017ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
4149{ 5018{
4150 if (expect_false (ev_is_active (w))) 5019 if (ecb_expect_false (ev_is_active (w)))
4151 return; 5020 return;
4152 5021
4153 EV_FREQUENT_CHECK; 5022 EV_FREQUENT_CHECK;
4154 5023
4155 ev_start (EV_A_ (W)w, ++forkcnt); 5024 ev_start (EV_A_ (W)w, ++forkcnt);
4156 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5025 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
4157 forks [forkcnt - 1] = w; 5026 forks [forkcnt - 1] = w;
4158 5027
4159 EV_FREQUENT_CHECK; 5028 EV_FREQUENT_CHECK;
4160} 5029}
4161 5030
4162void 5031void
4163ev_fork_stop (EV_P_ ev_fork *w) 5032ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
4164{ 5033{
4165 clear_pending (EV_A_ (W)w); 5034 clear_pending (EV_A_ (W)w);
4166 if (expect_false (!ev_is_active (w))) 5035 if (ecb_expect_false (!ev_is_active (w)))
4167 return; 5036 return;
4168 5037
4169 EV_FREQUENT_CHECK; 5038 EV_FREQUENT_CHECK;
4170 5039
4171 { 5040 {
… …
4181} 5050}
4182#endif 5051#endif
4183 5052
4184#if EV_CLEANUP_ENABLE 5053#if EV_CLEANUP_ENABLE
4185void 5054void
4186ev_cleanup_start (EV_P_ ev_cleanup *w) 5055ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4187{ 5056{
4188 if (expect_false (ev_is_active (w))) 5057 if (ecb_expect_false (ev_is_active (w)))
4189 return; 5058 return;
4190 5059
4191 EV_FREQUENT_CHECK; 5060 EV_FREQUENT_CHECK;
4192 5061
4193 ev_start (EV_A_ (W)w, ++cleanupcnt); 5062 ev_start (EV_A_ (W)w, ++cleanupcnt);
4194 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 5063 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
4195 cleanups [cleanupcnt - 1] = w; 5064 cleanups [cleanupcnt - 1] = w;
4196 5065
4197 /* cleanup watchers should never keep a refcount on the loop */ 5066 /* cleanup watchers should never keep a refcount on the loop */
4198 ev_unref (EV_A); 5067 ev_unref (EV_A);
4199 EV_FREQUENT_CHECK; 5068 EV_FREQUENT_CHECK;
4200} 5069}
4201 5070
4202void 5071void
4203ev_cleanup_stop (EV_P_ ev_cleanup *w) 5072ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4204{ 5073{
4205 clear_pending (EV_A_ (W)w); 5074 clear_pending (EV_A_ (W)w);
4206 if (expect_false (!ev_is_active (w))) 5075 if (ecb_expect_false (!ev_is_active (w)))
4207 return; 5076 return;
4208 5077
4209 EV_FREQUENT_CHECK; 5078 EV_FREQUENT_CHECK;
4210 ev_ref (EV_A); 5079 ev_ref (EV_A);
4211 5080
… …
4222} 5091}
4223#endif 5092#endif
4224 5093
4225#if EV_ASYNC_ENABLE 5094#if EV_ASYNC_ENABLE
4226void 5095void
4227ev_async_start (EV_P_ ev_async *w) 5096ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4228{ 5097{
4229 if (expect_false (ev_is_active (w))) 5098 if (ecb_expect_false (ev_is_active (w)))
4230 return; 5099 return;
4231 5100
4232 w->sent = 0; 5101 w->sent = 0;
4233 5102
4234 evpipe_init (EV_A); 5103 evpipe_init (EV_A);
4235 5104
4236 EV_FREQUENT_CHECK; 5105 EV_FREQUENT_CHECK;
4237 5106
4238 ev_start (EV_A_ (W)w, ++asynccnt); 5107 ev_start (EV_A_ (W)w, ++asynccnt);
4239 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5108 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
4240 asyncs [asynccnt - 1] = w; 5109 asyncs [asynccnt - 1] = w;
4241 5110
4242 EV_FREQUENT_CHECK; 5111 EV_FREQUENT_CHECK;
4243} 5112}
4244 5113
4245void 5114void
4246ev_async_stop (EV_P_ ev_async *w) 5115ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4247{ 5116{
4248 clear_pending (EV_A_ (W)w); 5117 clear_pending (EV_A_ (W)w);
4249 if (expect_false (!ev_is_active (w))) 5118 if (ecb_expect_false (!ev_is_active (w)))
4250 return; 5119 return;
4251 5120
4252 EV_FREQUENT_CHECK; 5121 EV_FREQUENT_CHECK;
4253 5122
4254 { 5123 {
… …
4262 5131
4263 EV_FREQUENT_CHECK; 5132 EV_FREQUENT_CHECK;
4264} 5133}
4265 5134
4266void 5135void
4267ev_async_send (EV_P_ ev_async *w) 5136ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
4268{ 5137{
4269 w->sent = 1; 5138 w->sent = 1;
4270 evpipe_write (EV_A_ &async_pending); 5139 evpipe_write (EV_A_ &async_pending);
4271} 5140}
4272#endif 5141#endif
… …
4309 5178
4310 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));
4311} 5180}
4312 5181
4313void 5182void
4314ev_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
4315{ 5184{
4316 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));
4317
4318 if (expect_false (!once))
4319 {
4320 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
4321 return;
4322 }
4323 5186
4324 once->cb = cb; 5187 once->cb = cb;
4325 once->arg = arg; 5188 once->arg = arg;
4326 5189
4327 ev_init (&once->io, once_cb_io); 5190 ev_init (&once->io, once_cb_io);
… …
4340} 5203}
4341 5204
4342/*****************************************************************************/ 5205/*****************************************************************************/
4343 5206
4344#if EV_WALK_ENABLE 5207#if EV_WALK_ENABLE
4345void ecb_cold 5208ecb_cold
5209void
4346ev_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
4347{ 5211{
4348 int i, j; 5212 int i, j;
4349 ev_watcher_list *wl, *wn; 5213 ev_watcher_list *wl, *wn;
4350 5214
4351 if (types & (EV_IO | EV_EMBED)) 5215 if (types & (EV_IO | EV_EMBED))

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