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Comparing libev/ev.c (file contents):
Revision 1.392 by root, Thu Aug 4 14:37:49 2011 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
… …
183# include EV_H 202# include EV_H
184#else 203#else
185# include "ev.h" 204# include "ev.h"
186#endif 205#endif
187 206
188EV_CPP(extern "C" {) 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
216#endif
189 217
190#ifndef _WIN32 218#ifndef _WIN32
191# include <sys/time.h> 219# include <sys/time.h>
192# include <sys/wait.h> 220# include <sys/wait.h>
193# include <unistd.h> 221# include <unistd.h>
194#else 222#else
195# include <io.h> 223# include <io.h>
196# define WIN32_LEAN_AND_MEAN 224# define WIN32_LEAN_AND_MEAN
225# include <winsock2.h>
197# include <windows.h> 226# include <windows.h>
198# ifndef EV_SELECT_IS_WINSOCKET 227# ifndef EV_SELECT_IS_WINSOCKET
199# define EV_SELECT_IS_WINSOCKET 1 228# define EV_SELECT_IS_WINSOCKET 1
200# endif 229# endif
201# undef EV_AVOID_STDIO 230# undef EV_AVOID_STDIO
202#endif 231#endif
203 232
204/* OS X, in its infinite idiocy, actually HARDCODES
205 * a limit of 1024 into their select. Where people have brains,
206 * OS X engineers apparently have a vacuum. Or maybe they were
207 * ordered to have a vacuum, or they do anything for money.
208 * This might help. Or not.
209 */
210#define _DARWIN_UNLIMITED_SELECT 1
211
212/* 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 */
213 234
214/* try to deduce the maximum number of signals on this platform */ 235/* try to deduce the maximum number of signals on this platform */
215#if defined (EV_NSIG) 236#if defined EV_NSIG
216/* use what's provided */ 237/* use what's provided */
217#elif defined (NSIG) 238#elif defined NSIG
218# define EV_NSIG (NSIG) 239# define EV_NSIG (NSIG)
219#elif defined(_NSIG) 240#elif defined _NSIG
220# define EV_NSIG (_NSIG) 241# define EV_NSIG (_NSIG)
221#elif defined (SIGMAX) 242#elif defined SIGMAX
222# define EV_NSIG (SIGMAX+1) 243# define EV_NSIG (SIGMAX+1)
223#elif defined (SIG_MAX) 244#elif defined SIG_MAX
224# define EV_NSIG (SIG_MAX+1) 245# define EV_NSIG (SIG_MAX+1)
225#elif defined (_SIG_MAX) 246#elif defined _SIG_MAX
226# define EV_NSIG (_SIG_MAX+1) 247# define EV_NSIG (_SIG_MAX+1)
227#elif defined (MAXSIG) 248#elif defined MAXSIG
228# define EV_NSIG (MAXSIG+1) 249# define EV_NSIG (MAXSIG+1)
229#elif defined (MAX_SIG) 250#elif defined MAX_SIG
230# define EV_NSIG (MAX_SIG+1) 251# define EV_NSIG (MAX_SIG+1)
231#elif defined (SIGARRAYSIZE) 252#elif defined SIGARRAYSIZE
232# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 253# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
233#elif defined (_sys_nsig) 254#elif defined _sys_nsig
234# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 255# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
235#else 256#else
236# error "unable to find value for NSIG, please report" 257# define EV_NSIG (8 * sizeof (sigset_t) + 1)
237/* to make it compile regardless, just remove the above line, */
238/* but consider reporting it, too! :) */
239# define EV_NSIG 65
240#endif 258#endif
241 259
242#ifndef EV_USE_FLOOR 260#ifndef EV_USE_FLOOR
243# define EV_USE_FLOOR 0 261# define EV_USE_FLOOR 0
244#endif 262#endif
245 263
246#ifndef EV_USE_CLOCK_SYSCALL 264#ifndef EV_USE_CLOCK_SYSCALL
247# if __linux && __GLIBC__ >= 2 265# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
248# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 266# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
249# else 267# else
250# define EV_USE_CLOCK_SYSCALL 0 268# define EV_USE_CLOCK_SYSCALL 0
251# endif 269# endif
252#endif 270#endif
253 271
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
254#ifndef EV_USE_MONOTONIC 281#ifndef EV_USE_MONOTONIC
255# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 282# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
256# define EV_USE_MONOTONIC EV_FEATURE_OS 283# define EV_USE_MONOTONIC EV_FEATURE_OS
257# else 284# else
258# define EV_USE_MONOTONIC 0 285# define EV_USE_MONOTONIC 0
259# endif 286# endif
260#endif 287#endif
… …
297 324
298#ifndef EV_USE_PORT 325#ifndef EV_USE_PORT
299# define EV_USE_PORT 0 326# define EV_USE_PORT 0
300#endif 327#endif
301 328
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
302#ifndef EV_USE_INOTIFY 345#ifndef EV_USE_INOTIFY
303# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 346# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
304# define EV_USE_INOTIFY EV_FEATURE_OS 347# define EV_USE_INOTIFY EV_FEATURE_OS
305# else 348# else
306# define EV_USE_INOTIFY 0 349# define EV_USE_INOTIFY 0
… …
347 390
348#ifndef EV_HEAP_CACHE_AT 391#ifndef EV_HEAP_CACHE_AT
349# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 392# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
350#endif 393#endif
351 394
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
352/* 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, */
353/* which makes programs even slower. might work on other unices, too. */ 412/* which makes programs even slower. might work on other unices, too. */
354#if EV_USE_CLOCK_SYSCALL 413#if EV_USE_CLOCK_SYSCALL
355# include <syscall.h> 414# include <sys/syscall.h>
356# ifdef SYS_clock_gettime 415# ifdef SYS_clock_gettime
357# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 416# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
358# undef EV_USE_MONOTONIC 417# undef EV_USE_MONOTONIC
359# define EV_USE_MONOTONIC 1 418# define EV_USE_MONOTONIC 1
419# define EV_NEED_SYSCALL 1
360# else 420# else
361# undef EV_USE_CLOCK_SYSCALL 421# undef EV_USE_CLOCK_SYSCALL
362# define EV_USE_CLOCK_SYSCALL 0 422# define EV_USE_CLOCK_SYSCALL 0
363# endif 423# endif
364#endif 424#endif
365 425
366/* 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 */
367 427
368#ifdef _AIX
369/* AIX has a completely broken poll.h header */
370# undef EV_USE_POLL
371# define EV_USE_POLL 0
372#endif
373
374#ifndef CLOCK_MONOTONIC 428#ifndef CLOCK_MONOTONIC
375# undef EV_USE_MONOTONIC 429# undef EV_USE_MONOTONIC
376# define EV_USE_MONOTONIC 0 430# define EV_USE_MONOTONIC 0
377#endif 431#endif
378 432
… …
386# define EV_USE_INOTIFY 0 440# define EV_USE_INOTIFY 0
387#endif 441#endif
388 442
389#if !EV_USE_NANOSLEEP 443#if !EV_USE_NANOSLEEP
390/* 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 */
391# if !defined(_WIN32) && !defined(__hpux) 445# if !defined _WIN32 && !defined __hpux
392# 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
393# endif 472# endif
394#endif 473#endif
395 474
396#if EV_USE_INOTIFY 475#if EV_USE_INOTIFY
397# include <sys/statfs.h> 476# include <sys/statfs.h>
… …
399/* 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 */
400# ifndef IN_DONT_FOLLOW 479# ifndef IN_DONT_FOLLOW
401# undef EV_USE_INOTIFY 480# undef EV_USE_INOTIFY
402# define EV_USE_INOTIFY 0 481# define EV_USE_INOTIFY 0
403# endif 482# endif
404#endif
405
406#if EV_SELECT_IS_WINSOCKET
407# include <winsock.h>
408#endif 483#endif
409 484
410#if EV_USE_EVENTFD 485#if EV_USE_EVENTFD
411/* 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 */
412# include <stdint.h> 487# include <stdint.h>
… …
443 uint32_t ssi_signo; 518 uint32_t ssi_signo;
444 char pad[128 - sizeof (uint32_t)]; 519 char pad[128 - sizeof (uint32_t)];
445}; 520};
446#endif 521#endif
447 522
448/**/ 523/*****************************************************************************/
449 524
450#if EV_VERIFY >= 3 525#if EV_VERIFY >= 3
451# define EV_FREQUENT_CHECK ev_verify (EV_A) 526# define EV_FREQUENT_CHECK ev_verify (EV_A)
452#else 527#else
453# define EV_FREQUENT_CHECK do { } while (0) 528# define EV_FREQUENT_CHECK do { } while (0)
… …
458 * This value is good at least till the year 4000. 533 * This value is good at least till the year 4000.
459 */ 534 */
460#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */ 535#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
461/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */ 536/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
462 537
463#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) */
464#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) */
465 540
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
466#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)
467#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)
468 555
469/* 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 */
470/* ECB.H BEGIN */ 557/* ECB.H BEGIN */
471/* 558/*
472 * libecb - http://software.schmorp.de/pkg/libecb 559 * libecb - http://software.schmorp.de/pkg/libecb
473 * 560 *
474 * Copyright (©) 2009-2011 Marc Alexander Lehmann <libecb@schmorp.de> 561 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
475 * Copyright (©) 2011 Emanuele Giaquinta 562 * Copyright (©) 2011 Emanuele Giaquinta
476 * All rights reserved. 563 * All rights reserved.
477 * 564 *
478 * 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-
479 * tion, are permitted provided that the following conditions are met: 566 * tion, are permitted provided that the following conditions are met:
… …
493 * 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;
494 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 581 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
495 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- 582 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
496 * 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
497 * 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.
498 */ 596 */
499 597
500#ifndef ECB_H 598#ifndef ECB_H
501#define ECB_H 599#define ECB_H
600
601/* 16 bits major, 16 bits minor */
602#define ECB_VERSION 0x00010006
502 603
503#ifdef _WIN32 604#ifdef _WIN32
504 typedef signed char int8_t; 605 typedef signed char int8_t;
505 typedef unsigned char uint8_t; 606 typedef unsigned char uint8_t;
506 typedef signed short int16_t; 607 typedef signed short int16_t;
… …
512 typedef unsigned long long uint64_t; 613 typedef unsigned long long uint64_t;
513 #else /* _MSC_VER || __BORLANDC__ */ 614 #else /* _MSC_VER || __BORLANDC__ */
514 typedef signed __int64 int64_t; 615 typedef signed __int64 int64_t;
515 typedef unsigned __int64 uint64_t; 616 typedef unsigned __int64 uint64_t;
516 #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
517#else 627#else
518 #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
519#endif 646#endif
520 647
521/* many compilers define _GNUC_ to some versions but then only implement 648/* many compilers define _GNUC_ to some versions but then only implement
522 * what their idiot authors think are the "more important" extensions, 649 * what their idiot authors think are the "more important" extensions,
523 * causing enormous grief in return for some better fake benchmark numbers. 650 * causing enormous grief in return for some better fake benchmark numbers.
524 * or so. 651 * or so.
525 * 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
526 * 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.
527 */ 654 */
528#ifndef ECB_GCC_VERSION
529 #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__
530 #define ECB_GCC_VERSION(major,minor) 0 656 #define ECB_GCC_VERSION(major,minor) 0
531 #else 657#else
532 #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)))
533 #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
534#endif 700#endif
535 701
536/*****************************************************************************/ 702/*****************************************************************************/
537 703
538/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ 704/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
539/* 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 */
540 706
541#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
542 #define ECB_MEMORY_FENCE do { } while (0) 712 #define ECB_MEMORY_FENCE do { } while (0)
543 #define ECB_MEMORY_FENCE_ACQUIRE do { } while (0) 713#endif
544 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) 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 */
545#endif 722#endif
546 723
547#ifndef ECB_MEMORY_FENCE 724#ifndef ECB_MEMORY_FENCE
548 #if ECB_GCC_VERSION(2,5) 725 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
549 #if __x86 726 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
727 #if __i386 || __i386__
550 #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")
551 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */ 729 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
552 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */ 730 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
553 #elif __amd64 731 #elif ECB_GCC_AMD64
554 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 732 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
555 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory") 733 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
556 #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")
557 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 735 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
558 #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 */
559 #elif defined(__ARM_ARCH_6__ ) || defined(__ARM_ARCH_6J__ ) \ 744 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
560 || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6ZK__) \ 745 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
746 || defined __ARM_ARCH_6T2__
747 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
748 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
561 || defined(__ARM_ARCH_7__ ) || defined(__ARM_ARCH_7A__ ) \ 749 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
562 || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7R__ ) 750 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
563 #define ECB_MEMORY_FENCE \ 751 #elif __aarch64__
564 do { \ 752 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
565 int null = 0; \ 753 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
566 __asm__ __volatile__ ("mcr p15,0,%0,c6,c10,5", : "=&r" (null) : : "memory"); \ 754 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
567 while (0) 755 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
756 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
757 #elif defined __s390__ || defined __s390x__
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")
568 #endif 776 #endif
569 #endif 777 #endif
570#endif 778#endif
571 779
572#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
573 #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER) 795 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
574 #define ECB_MEMORY_FENCE __sync_synchronize () 796 #define ECB_MEMORY_FENCE __sync_synchronize ()
575 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */ 797 #elif _MSC_VER >= 1500 /* VC++ 2008 */
576 /*#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()
577 #elif _MSC_VER >= 1400 /* VC++ 2005 */ 803 #elif _MSC_VER >= 1400 /* VC++ 2005 */
578 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) 804 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
579 #define ECB_MEMORY_FENCE _ReadWriteBarrier () 805 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
580 #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 */
581 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () 807 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
582 #elif defined(_WIN32) 808 #elif defined _WIN32
583 #include <WinNT.h> 809 #include <WinNT.h>
584 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ 810 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
811 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
812 #include <mbarrier.h>
813 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
814 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_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)
585 #endif 830 #endif
586#endif 831#endif
587 832
588#ifndef ECB_MEMORY_FENCE 833#ifndef ECB_MEMORY_FENCE
589 #if !ECB_AVOID_PTHREADS 834 #if !ECB_AVOID_PTHREADS
… …
601 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER; 846 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
602 #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)
603 #endif 848 #endif
604#endif 849#endif
605 850
606#if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE) 851#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
607 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 852 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
608#endif 853#endif
609 854
610#if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE) 855#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
611 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 856 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
612#endif 857#endif
613 858
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
614/*****************************************************************************/ 863/*****************************************************************************/
615 864
616#define ECB_C99 (__STDC_VERSION__ >= 199901L) 865#if ECB_CPP
617
618#if __cplusplus
619 #define ecb_inline static inline 866 #define ecb_inline static inline
620#elif ECB_GCC_VERSION(2,5) 867#elif ECB_GCC_VERSION(2,5)
621 #define ecb_inline static __inline__ 868 #define ecb_inline static __inline__
622#elif ECB_C99 869#elif ECB_C99
623 #define ecb_inline static inline 870 #define ecb_inline static inline
… …
637 884
638#define ECB_CONCAT_(a, b) a ## b 885#define ECB_CONCAT_(a, b) a ## b
639#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) 886#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
640#define ECB_STRINGIFY_(a) # a 887#define ECB_STRINGIFY_(a) # a
641#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))
642 890
643#define ecb_function_ ecb_inline 891#define ecb_function_ ecb_inline
644 892
645#if ECB_GCC_VERSION(3,1) 893#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
646 #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)
647 #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)
648 #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)
649 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) 916 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
650#else 917#else
651 #define ecb_attribute(attrlist)
652 #define ecb_is_constant(expr) 0
653 #define ecb_expect(expr,value) (expr)
654 #define ecb_prefetch(addr,rw,locality) 918 #define ecb_prefetch(addr,rw,locality)
655#endif 919#endif
656 920
657/* no emulation for ecb_decltype */ 921/* no emulation for ecb_decltype */
658#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; };
659 #define ecb_decltype(x) __decltype(x) 925 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
660#elif ECB_GCC_VERSION(3,0) 926#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
661 #define ecb_decltype(x) __typeof(x) 927 #define ecb_decltype(x) __typeof__ (x)
662#endif 928#endif
663 929
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
664#define ecb_noinline ecb_attribute ((__noinline__)) 947 #define ecb_noinline ecb_attribute ((__noinline__))
665#define ecb_noreturn ecb_attribute ((__noreturn__)) 948#endif
949
666#define ecb_unused ecb_attribute ((__unused__)) 950#define ecb_unused ecb_attribute ((__unused__))
667#define ecb_const ecb_attribute ((__const__)) 951#define ecb_const ecb_attribute ((__const__))
668#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
669 965
670#if ECB_GCC_VERSION(4,3) 966#if ECB_GCC_VERSION(4,3)
671 #define ecb_artificial ecb_attribute ((__artificial__)) 967 #define ecb_artificial ecb_attribute ((__artificial__))
672 #define ecb_hot ecb_attribute ((__hot__)) 968 #define ecb_hot ecb_attribute ((__hot__))
673 #define ecb_cold ecb_attribute ((__cold__)) 969 #define ecb_cold ecb_attribute ((__cold__))
… …
685/* for compatibility to the rest of the world */ 981/* for compatibility to the rest of the world */
686#define ecb_likely(expr) ecb_expect_true (expr) 982#define ecb_likely(expr) ecb_expect_true (expr)
687#define ecb_unlikely(expr) ecb_expect_false (expr) 983#define ecb_unlikely(expr) ecb_expect_false (expr)
688 984
689/* count trailing zero bits and count # of one bits */ 985/* count trailing zero bits and count # of one bits */
690#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))
691 /* 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 */
692 #define ecb_ld32(x) (__builtin_clz (x) ^ 31) 991 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
693 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) 992 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
694 #define ecb_ctz32(x) __builtin_ctz (x) 993 #define ecb_ctz32(x) __builtin_ctz (x)
695 #define ecb_ctz64(x) __builtin_ctzll (x) 994 #define ecb_ctz64(x) __builtin_ctzll (x)
696 #define ecb_popcount32(x) __builtin_popcount (x) 995 #define ecb_popcount32(x) __builtin_popcount (x)
697 /* no popcountll */ 996 /* no popcountll */
698#else 997#else
699 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; 998 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
700 ecb_function_ int 999 ecb_function_ ecb_const int
701 ecb_ctz32 (uint32_t x) 1000 ecb_ctz32 (uint32_t x)
702 { 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
703 int r = 0; 1007 int r = 0;
704 1008
705 x &= ~x + 1; /* this isolates the lowest bit */ 1009 x &= ~x + 1; /* this isolates the lowest bit */
706 1010
707#if ECB_branchless_on_i386 1011#if ECB_branchless_on_i386
… …
717 if (x & 0xff00ff00) r += 8; 1021 if (x & 0xff00ff00) r += 8;
718 if (x & 0xffff0000) r += 16; 1022 if (x & 0xffff0000) r += 16;
719#endif 1023#endif
720 1024
721 return r; 1025 return r;
1026#endif
722 } 1027 }
723 1028
724 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; 1029 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
725 ecb_function_ int 1030 ecb_function_ ecb_const int
726 ecb_ctz64 (uint64_t x) 1031 ecb_ctz64 (uint64_t x)
727 { 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
728 int shift = x & 0xffffffffU ? 0 : 32; 1038 int shift = x & 0xffffffff ? 0 : 32;
729 return ecb_ctz32 (x >> shift) + shift; 1039 return ecb_ctz32 (x >> shift) + shift;
1040#endif
730 } 1041 }
731 1042
732 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; 1043 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
733 ecb_function_ int 1044 ecb_function_ ecb_const int
734 ecb_popcount32 (uint32_t x) 1045 ecb_popcount32 (uint32_t x)
735 { 1046 {
736 x -= (x >> 1) & 0x55555555; 1047 x -= (x >> 1) & 0x55555555;
737 x = ((x >> 2) & 0x33333333) + (x & 0x33333333); 1048 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
738 x = ((x >> 4) + x) & 0x0f0f0f0f; 1049 x = ((x >> 4) + x) & 0x0f0f0f0f;
739 x *= 0x01010101; 1050 x *= 0x01010101;
740 1051
741 return x >> 24; 1052 return x >> 24;
742 } 1053 }
743 1054
744 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; 1055 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
745 ecb_function_ int ecb_ld32 (uint32_t x) 1056 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
746 { 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
747 int r = 0; 1063 int r = 0;
748 1064
749 if (x >> 16) { x >>= 16; r += 16; } 1065 if (x >> 16) { x >>= 16; r += 16; }
750 if (x >> 8) { x >>= 8; r += 8; } 1066 if (x >> 8) { x >>= 8; r += 8; }
751 if (x >> 4) { x >>= 4; r += 4; } 1067 if (x >> 4) { x >>= 4; r += 4; }
752 if (x >> 2) { x >>= 2; r += 2; } 1068 if (x >> 2) { x >>= 2; r += 2; }
753 if (x >> 1) { r += 1; } 1069 if (x >> 1) { r += 1; }
754 1070
755 return r; 1071 return r;
1072#endif
756 } 1073 }
757 1074
758 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; 1075 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
759 ecb_function_ int ecb_ld64 (uint64_t x) 1076 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
760 { 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
761 int r = 0; 1083 int r = 0;
762 1084
763 if (x >> 32) { x >>= 32; r += 32; } 1085 if (x >> 32) { x >>= 32; r += 32; }
764 1086
765 return r + ecb_ld32 (x); 1087 return r + ecb_ld32 (x);
1088#endif
766 } 1089 }
767#endif 1090#endif
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
1097ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1098ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1099{
1100 return ( (x * 0x0802U & 0x22110U)
1101 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1102}
1103
1104ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1105ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1106{
1107 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1108 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1109 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1110 x = ( x >> 8 ) | ( x << 8);
1111
1112 return x;
1113}
1114
1115ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1116ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1117{
1118 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1119 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1120 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1121 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1122 x = ( x >> 16 ) | ( x << 16);
1123
1124 return x;
1125}
768 1126
769/* popcount64 is only available on 64 bit cpus as gcc builtin */ 1127/* popcount64 is only available on 64 bit cpus as gcc builtin */
770/* so for this version we are lazy */ 1128/* so for this version we are lazy */
771ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 1129ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
772ecb_function_ int 1130ecb_function_ ecb_const int
773ecb_popcount64 (uint64_t x) 1131ecb_popcount64 (uint64_t x)
774{ 1132{
775 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); 1133 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
776} 1134}
777 1135
778ecb_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);
779ecb_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);
780ecb_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);
781ecb_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);
782ecb_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);
783ecb_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);
784ecb_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);
785ecb_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);
786 1144
787ecb_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); }
788ecb_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); }
789ecb_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); }
790ecb_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); }
791ecb_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); }
792ecb_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); }
793ecb_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); }
794ecb_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); }
795 1153
796#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
797 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 1158 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1159 #endif
798 #define ecb_bswap32(x) __builtin_bswap32 (x) 1160 #define ecb_bswap32(x) __builtin_bswap32 (x)
799 #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)))
800#else 1167#else
801 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; 1168 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
802 ecb_function_ uint16_t 1169 ecb_function_ ecb_const uint16_t
803 ecb_bswap16 (uint16_t x) 1170 ecb_bswap16 (uint16_t x)
804 { 1171 {
805 return ecb_rotl16 (x, 8); 1172 return ecb_rotl16 (x, 8);
806 } 1173 }
807 1174
808 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; 1175 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
809 ecb_function_ uint32_t 1176 ecb_function_ ecb_const uint32_t
810 ecb_bswap32 (uint32_t x) 1177 ecb_bswap32 (uint32_t x)
811 { 1178 {
812 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); 1179 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
813 } 1180 }
814 1181
815 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; 1182 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
816 ecb_function_ uint64_t 1183 ecb_function_ ecb_const uint64_t
817 ecb_bswap64 (uint64_t x) 1184 ecb_bswap64 (uint64_t x)
818 { 1185 {
819 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); 1186 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
820 } 1187 }
821#endif 1188#endif
822 1189
823#if ECB_GCC_VERSION(4,5) 1190#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
824 #define ecb_unreachable() __builtin_unreachable () 1191 #define ecb_unreachable() __builtin_unreachable ()
825#else 1192#else
826 /* 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 :/ */
827 ecb_function_ void ecb_unreachable (void) ecb_noreturn; 1194 ecb_inline ecb_noreturn void ecb_unreachable (void);
828 ecb_function_ void ecb_unreachable (void) { } 1195 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
829#endif 1196#endif
830 1197
831/* try to tell the compiler that some condition is definitely true */ 1198/* try to tell the compiler that some condition is definitely true */
832#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) 1199#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
833 1200
834ecb_function_ unsigned char ecb_byteorder_helper (void) ecb_const; 1201ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
835ecb_function_ unsigned char 1202ecb_inline ecb_const uint32_t
836ecb_byteorder_helper (void) 1203ecb_byteorder_helper (void)
837{ 1204{
838 const uint32_t u = 0x11223344; 1205 /* the union code still generates code under pressure in gcc, */
839 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
840} 1227}
841 1228
842ecb_function_ ecb_bool ecb_big_endian (void) ecb_const; 1229ecb_inline ecb_const ecb_bool ecb_big_endian (void);
843ecb_function_ 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; }
844ecb_function_ ecb_bool ecb_little_endian (void) ecb_const; 1231ecb_inline ecb_const ecb_bool ecb_little_endian (void);
845ecb_function_ 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; }
846 1233
847#if ECB_GCC_VERSION(3,0) || ECB_C99 1234#if ECB_GCC_VERSION(3,0) || ECB_C99
848 #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))
849#else 1236#else
850 #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)))
1238#endif
1239
1240#if ECB_CPP
1241 template<typename T>
1242 static inline T ecb_div_rd (T val, T div)
1243 {
1244 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1245 }
1246 template<typename T>
1247 static inline T ecb_div_ru (T val, T div)
1248 {
1249 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1250 }
1251#else
1252 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1253 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
851#endif 1254#endif
852 1255
853#if ecb_cplusplus_does_not_suck 1256#if ecb_cplusplus_does_not_suck
854 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */ 1257 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
855 template<typename T, int N> 1258 template<typename T, int N>
… …
859 } 1262 }
860#else 1263#else
861 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1264 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
862#endif 1265#endif
863 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
864#endif 1572#endif
865 1573
866/* ECB.H END */ 1574/* ECB.H END */
867 1575
868#if ECB_MEMORY_FENCE_NEEDS_PTHREADS 1576#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1577/* if your architecture doesn't need memory fences, e.g. because it is
1578 * single-cpu/core, or if you use libev in a project that doesn't use libev
1579 * from multiple threads, then you can define ECB_NO_THREADS when compiling
1580 * libev, in which cases the memory fences become nops.
1581 * alternatively, you can remove this #error and link against libpthread,
1582 * which will then provide the memory fences.
1583 */
1584# error "memory fences not defined for your architecture, please report"
1585#endif
1586
869# undef ECB_MEMORY_FENCE 1587#ifndef ECB_MEMORY_FENCE
870# undef ECB_MEMORY_FENCE_ACQUIRE 1588# define ECB_MEMORY_FENCE do { } while (0)
871# undef ECB_MEMORY_FENCE_RELEASE 1589# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1590# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
872#endif 1591#endif
873
874#define expect_false(cond) ecb_expect_false (cond)
875#define expect_true(cond) ecb_expect_true (cond)
876#define noinline ecb_noinline
877 1592
878#define inline_size ecb_inline 1593#define inline_size ecb_inline
879 1594
880#if EV_FEATURE_CODE 1595#if EV_FEATURE_CODE
881# define inline_speed ecb_inline 1596# define inline_speed ecb_inline
882#else 1597#else
883# define inline_speed static noinline 1598# define inline_speed ecb_noinline static
884#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/*****************************************************************************/
885 1666
886#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1667#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
887 1668
888#if EV_MINPRI == EV_MAXPRI 1669#if EV_MINPRI == EV_MAXPRI
889# define ABSPRI(w) (((W)w), 0) 1670# define ABSPRI(w) (((W)w), 0)
890#else 1671#else
891# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1672# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
892#endif 1673#endif
893 1674
894#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1675#define EMPTY /* required for microsofts broken pseudo-c compiler */
895#define EMPTY2(a,b) /* used to suppress some warnings */
896 1676
897typedef ev_watcher *W; 1677typedef ev_watcher *W;
898typedef ev_watcher_list *WL; 1678typedef ev_watcher_list *WL;
899typedef ev_watcher_time *WT; 1679typedef ev_watcher_time *WT;
900 1680
… …
925# include "ev_win32.c" 1705# include "ev_win32.c"
926#endif 1706#endif
927 1707
928/*****************************************************************************/ 1708/*****************************************************************************/
929 1709
1710#if EV_USE_LINUXAIO
1711# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1712#endif
1713
930/* define a suitable floor function (only used by periodics atm) */ 1714/* define a suitable floor function (only used by periodics atm) */
931 1715
932#if EV_USE_FLOOR 1716#if EV_USE_FLOOR
933# include <math.h> 1717# include <math.h>
934# define ev_floor(v) floor (v) 1718# define ev_floor(v) floor (v)
935#else 1719#else
936 1720
937#include <float.h> 1721#include <float.h>
938 1722
939/* 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
940static ev_tstamp noinline 1725static ev_tstamp
941ev_floor (ev_tstamp v) 1726ev_floor (ev_tstamp v)
942{ 1727{
943 /* the choice of shift factor is not terribly important */ 1728 /* the choice of shift factor is not terribly important */
944#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1729#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
945 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1730 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
946#else 1731#else
947 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; 1732 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
948#endif 1733#endif
949 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
950 /* argument too large for an unsigned long? */ 1743 /* argument too large for an unsigned long? then reduce it */
951 if (expect_false (v >= shift)) 1744 if (ecb_expect_false (v >= shift))
952 { 1745 {
953 ev_tstamp f; 1746 ev_tstamp f;
954 1747
955 if (v == v - 1.) 1748 if (v == v - 1.)
956 return v; /* very large number */ 1749 return v; /* very large numbers are assumed to be integer */
957 1750
958 f = shift * ev_floor (v * (1. / shift)); 1751 f = shift * ev_floor (v * (1. / shift));
959 return f + ev_floor (v - f); 1752 return f + ev_floor (v - f);
960 } 1753 }
961 1754
962 /* special treatment for negative args? */
963 if (expect_false (v < 0.))
964 {
965 ev_tstamp f = -ev_floor (-v);
966
967 return f - (f == v ? 0 : 1);
968 }
969
970 /* fits into an unsigned long */ 1755 /* fits into an unsigned long */
971 return (unsigned long)v; 1756 return (unsigned long)v;
972} 1757}
973 1758
974#endif 1759#endif
… …
977 1762
978#ifdef __linux 1763#ifdef __linux
979# include <sys/utsname.h> 1764# include <sys/utsname.h>
980#endif 1765#endif
981 1766
982static unsigned int noinline ecb_cold 1767ecb_noinline ecb_cold
1768static unsigned int
983ev_linux_version (void) 1769ev_linux_version (void)
984{ 1770{
985#ifdef __linux 1771#ifdef __linux
986 unsigned int v = 0; 1772 unsigned int v = 0;
987 struct utsname buf; 1773 struct utsname buf;
… …
1016} 1802}
1017 1803
1018/*****************************************************************************/ 1804/*****************************************************************************/
1019 1805
1020#if EV_AVOID_STDIO 1806#if EV_AVOID_STDIO
1021static void noinline ecb_cold 1807ecb_noinline ecb_cold
1808static void
1022ev_printerr (const char *msg) 1809ev_printerr (const char *msg)
1023{ 1810{
1024 write (STDERR_FILENO, msg, strlen (msg)); 1811 write (STDERR_FILENO, msg, strlen (msg));
1025} 1812}
1026#endif 1813#endif
1027 1814
1028static void (*syserr_cb)(const char *msg); 1815static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
1029 1816
1030void ecb_cold 1817ecb_cold
1818void
1031ev_set_syserr_cb (void (*cb)(const char *msg)) 1819ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
1032{ 1820{
1033 syserr_cb = cb; 1821 syserr_cb = cb;
1034} 1822}
1035 1823
1036static void noinline ecb_cold 1824ecb_noinline ecb_cold
1825static void
1037ev_syserr (const char *msg) 1826ev_syserr (const char *msg)
1038{ 1827{
1039 if (!msg) 1828 if (!msg)
1040 msg = "(libev) system error"; 1829 msg = "(libev) system error";
1041 1830
… …
1054 abort (); 1843 abort ();
1055 } 1844 }
1056} 1845}
1057 1846
1058static void * 1847static void *
1059ev_realloc_emul (void *ptr, long size) 1848ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
1060{ 1849{
1061#if __GLIBC__
1062 return realloc (ptr, size);
1063#else
1064 /* some systems, notably openbsd and darwin, fail to properly 1850 /* some systems, notably openbsd and darwin, fail to properly
1065 * 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
1066 * 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.
1067 */ 1855 */
1068 1856
1069 if (size) 1857 if (size)
1070 return realloc (ptr, size); 1858 return realloc (ptr, size);
1071 1859
1072 free (ptr); 1860 free (ptr);
1073 return 0; 1861 return 0;
1074#endif
1075} 1862}
1076 1863
1077static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1864static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
1078 1865
1079void ecb_cold 1866ecb_cold
1867void
1080ev_set_allocator (void *(*cb)(void *ptr, long size)) 1868ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
1081{ 1869{
1082 alloc = cb; 1870 alloc = cb;
1083} 1871}
1084 1872
1085inline_speed void * 1873inline_speed void *
… …
1112typedef struct 1900typedef struct
1113{ 1901{
1114 WL head; 1902 WL head;
1115 unsigned char events; /* the events watched for */ 1903 unsigned char events; /* the events watched for */
1116 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) */
1117 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 */
1118 unsigned char unused; 1906 unsigned char eflags; /* flags field for use by backends */
1119#if EV_USE_EPOLL 1907#if EV_USE_EPOLL
1120 unsigned int egen; /* generation counter to counter epoll bugs */ 1908 unsigned int egen; /* generation counter to counter epoll bugs */
1121#endif 1909#endif
1122#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 1910#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1123 SOCKET handle; 1911 SOCKET handle;
… …
1173 #undef VAR 1961 #undef VAR
1174 }; 1962 };
1175 #include "ev_wrap.h" 1963 #include "ev_wrap.h"
1176 1964
1177 static struct ev_loop default_loop_struct; 1965 static struct ev_loop default_loop_struct;
1178 struct ev_loop *ev_default_loop_ptr; 1966 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
1179 1967
1180#else 1968#else
1181 1969
1182 ev_tstamp ev_rt_now; 1970 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
1183 #define VAR(name,decl) static decl; 1971 #define VAR(name,decl) static decl;
1184 #include "ev_vars.h" 1972 #include "ev_vars.h"
1185 #undef VAR 1973 #undef VAR
1186 1974
1187 static int ev_default_loop_ptr; 1975 static int ev_default_loop_ptr;
1188 1976
1189#endif 1977#endif
1190 1978
1191#if EV_FEATURE_API 1979#if EV_FEATURE_API
1192# 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)
1193# 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)
1194# define EV_INVOKE_PENDING invoke_cb (EV_A) 1982# define EV_INVOKE_PENDING invoke_cb (EV_A)
1195#else 1983#else
1196# define EV_RELEASE_CB (void)0 1984# define EV_RELEASE_CB (void)0
1197# define EV_ACQUIRE_CB (void)0 1985# define EV_ACQUIRE_CB (void)0
1198# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1986# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
… …
1202 1990
1203/*****************************************************************************/ 1991/*****************************************************************************/
1204 1992
1205#ifndef EV_HAVE_EV_TIME 1993#ifndef EV_HAVE_EV_TIME
1206ev_tstamp 1994ev_tstamp
1207ev_time (void) 1995ev_time (void) EV_NOEXCEPT
1208{ 1996{
1209#if EV_USE_REALTIME 1997#if EV_USE_REALTIME
1210 if (expect_true (have_realtime)) 1998 if (ecb_expect_true (have_realtime))
1211 { 1999 {
1212 struct timespec ts; 2000 struct timespec ts;
1213 clock_gettime (CLOCK_REALTIME, &ts); 2001 clock_gettime (CLOCK_REALTIME, &ts);
1214 return ts.tv_sec + ts.tv_nsec * 1e-9; 2002 return EV_TS_GET (ts);
1215 } 2003 }
1216#endif 2004#endif
1217 2005
1218 struct timeval tv; 2006 struct timeval tv;
1219 gettimeofday (&tv, 0); 2007 gettimeofday (&tv, 0);
1220 return tv.tv_sec + tv.tv_usec * 1e-6; 2008 return EV_TV_GET (tv);
1221} 2009}
1222#endif 2010#endif
1223 2011
1224inline_size ev_tstamp 2012inline_size ev_tstamp
1225get_clock (void) 2013get_clock (void)
1226{ 2014{
1227#if EV_USE_MONOTONIC 2015#if EV_USE_MONOTONIC
1228 if (expect_true (have_monotonic)) 2016 if (ecb_expect_true (have_monotonic))
1229 { 2017 {
1230 struct timespec ts; 2018 struct timespec ts;
1231 clock_gettime (CLOCK_MONOTONIC, &ts); 2019 clock_gettime (CLOCK_MONOTONIC, &ts);
1232 return ts.tv_sec + ts.tv_nsec * 1e-9; 2020 return EV_TS_GET (ts);
1233 } 2021 }
1234#endif 2022#endif
1235 2023
1236 return ev_time (); 2024 return ev_time ();
1237} 2025}
1238 2026
1239#if EV_MULTIPLICITY 2027#if EV_MULTIPLICITY
1240ev_tstamp 2028ev_tstamp
1241ev_now (EV_P) 2029ev_now (EV_P) EV_NOEXCEPT
1242{ 2030{
1243 return ev_rt_now; 2031 return ev_rt_now;
1244} 2032}
1245#endif 2033#endif
1246 2034
1247void 2035void
1248ev_sleep (ev_tstamp delay) 2036ev_sleep (ev_tstamp delay) EV_NOEXCEPT
1249{ 2037{
1250 if (delay > 0.) 2038 if (delay > 0.)
1251 { 2039 {
1252#if EV_USE_NANOSLEEP 2040#if EV_USE_NANOSLEEP
1253 struct timespec ts; 2041 struct timespec ts;
1254 2042
1255 EV_TS_SET (ts, delay); 2043 EV_TS_SET (ts, delay);
1256 nanosleep (&ts, 0); 2044 nanosleep (&ts, 0);
1257#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) */
1258 Sleep ((unsigned long)(delay * 1e3)); 2048 Sleep ((unsigned long)(EV_TS_TO_MS (delay)));
1259#else 2049#else
1260 struct timeval tv; 2050 struct timeval tv;
1261 2051
1262 /* 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 */
1263 /* something not guaranteed by newer posix versions, but guaranteed */ 2053 /* something not guaranteed by newer posix versions, but guaranteed */
… …
1281 2071
1282 do 2072 do
1283 ncur <<= 1; 2073 ncur <<= 1;
1284 while (cnt > ncur); 2074 while (cnt > ncur);
1285 2075
1286 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 2076 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
1287 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 2077 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
1288 { 2078 {
1289 ncur *= elem; 2079 ncur *= elem;
1290 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 2080 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
1291 ncur = ncur - sizeof (void *) * 4; 2081 ncur = ncur - sizeof (void *) * 4;
… …
1293 } 2083 }
1294 2084
1295 return ncur; 2085 return ncur;
1296} 2086}
1297 2087
1298static void * noinline ecb_cold 2088ecb_noinline ecb_cold
2089static void *
1299array_realloc (int elem, void *base, int *cur, int cnt) 2090array_realloc (int elem, void *base, int *cur, int cnt)
1300{ 2091{
1301 *cur = array_nextsize (elem, *cur, cnt); 2092 *cur = array_nextsize (elem, *cur, cnt);
1302 return ev_realloc (base, elem * *cur); 2093 return ev_realloc (base, elem * *cur);
1303} 2094}
1304 2095
2096#define array_needsize_noinit(base,offset,count)
2097
1305#define array_init_zero(base,count) \ 2098#define array_needsize_zerofill(base,offset,count) \
1306 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2099 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
1307 2100
1308#define array_needsize(type,base,cur,cnt,init) \ 2101#define array_needsize(type,base,cur,cnt,init) \
1309 if (expect_false ((cnt) > (cur))) \ 2102 if (ecb_expect_false ((cnt) > (cur))) \
1310 { \ 2103 { \
1311 int ecb_unused ocur_ = (cur); \ 2104 ecb_unused int ocur_ = (cur); \
1312 (base) = (type *)array_realloc \ 2105 (base) = (type *)array_realloc \
1313 (sizeof (type), (base), &(cur), (cnt)); \ 2106 (sizeof (type), (base), &(cur), (cnt)); \
1314 init ((base) + (ocur_), (cur) - ocur_); \ 2107 init ((base), ocur_, ((cur) - ocur_)); \
1315 } 2108 }
1316 2109
1317#if 0 2110#if 0
1318#define array_slim(type,stem) \ 2111#define array_slim(type,stem) \
1319 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2112 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
1328 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
1329 2122
1330/*****************************************************************************/ 2123/*****************************************************************************/
1331 2124
1332/* dummy callback for pending events */ 2125/* dummy callback for pending events */
1333static void noinline 2126ecb_noinline
2127static void
1334pendingcb (EV_P_ ev_prepare *w, int revents) 2128pendingcb (EV_P_ ev_prepare *w, int revents)
1335{ 2129{
1336} 2130}
1337 2131
1338void noinline 2132ecb_noinline
2133void
1339ev_feed_event (EV_P_ void *w, int revents) 2134ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
1340{ 2135{
1341 W w_ = (W)w; 2136 W w_ = (W)w;
1342 int pri = ABSPRI (w_); 2137 int pri = ABSPRI (w_);
1343 2138
1344 if (expect_false (w_->pending)) 2139 if (ecb_expect_false (w_->pending))
1345 pendings [pri][w_->pending - 1].events |= revents; 2140 pendings [pri][w_->pending - 1].events |= revents;
1346 else 2141 else
1347 { 2142 {
1348 w_->pending = ++pendingcnt [pri]; 2143 w_->pending = ++pendingcnt [pri];
1349 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2144 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
1350 pendings [pri][w_->pending - 1].w = w_; 2145 pendings [pri][w_->pending - 1].w = w_;
1351 pendings [pri][w_->pending - 1].events = revents; 2146 pendings [pri][w_->pending - 1].events = revents;
1352 } 2147 }
2148
2149 pendingpri = NUMPRI - 1;
1353} 2150}
1354 2151
1355inline_speed void 2152inline_speed void
1356feed_reverse (EV_P_ W w) 2153feed_reverse (EV_P_ W w)
1357{ 2154{
1358 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2155 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
1359 rfeeds [rfeedcnt++] = w; 2156 rfeeds [rfeedcnt++] = w;
1360} 2157}
1361 2158
1362inline_size void 2159inline_size void
1363feed_reverse_done (EV_P_ int revents) 2160feed_reverse_done (EV_P_ int revents)
… …
1398inline_speed void 2195inline_speed void
1399fd_event (EV_P_ int fd, int revents) 2196fd_event (EV_P_ int fd, int revents)
1400{ 2197{
1401 ANFD *anfd = anfds + fd; 2198 ANFD *anfd = anfds + fd;
1402 2199
1403 if (expect_true (!anfd->reify)) 2200 if (ecb_expect_true (!anfd->reify))
1404 fd_event_nocheck (EV_A_ fd, revents); 2201 fd_event_nocheck (EV_A_ fd, revents);
1405} 2202}
1406 2203
1407void 2204void
1408ev_feed_fd_event (EV_P_ int fd, int revents) 2205ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
1409{ 2206{
1410 if (fd >= 0 && fd < anfdmax) 2207 if (fd >= 0 && fd < anfdmax)
1411 fd_event_nocheck (EV_A_ fd, revents); 2208 fd_event_nocheck (EV_A_ fd, revents);
1412} 2209}
1413 2210
… …
1450 ev_io *w; 2247 ev_io *w;
1451 2248
1452 unsigned char o_events = anfd->events; 2249 unsigned char o_events = anfd->events;
1453 unsigned char o_reify = anfd->reify; 2250 unsigned char o_reify = anfd->reify;
1454 2251
1455 anfd->reify = 0; 2252 anfd->reify = 0;
1456 2253
1457 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 2254 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
1458 { 2255 {
1459 anfd->events = 0; 2256 anfd->events = 0;
1460 2257
1461 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)
1462 anfd->events |= (unsigned char)w->events; 2259 anfd->events |= (unsigned char)w->events;
… …
1471 2268
1472 fdchangecnt = 0; 2269 fdchangecnt = 0;
1473} 2270}
1474 2271
1475/* something about the given fd changed */ 2272/* something about the given fd changed */
1476inline_size void 2273inline_size
2274void
1477fd_change (EV_P_ int fd, int flags) 2275fd_change (EV_P_ int fd, int flags)
1478{ 2276{
1479 unsigned char reify = anfds [fd].reify; 2277 unsigned char reify = anfds [fd].reify;
1480 anfds [fd].reify |= flags; 2278 anfds [fd].reify |= flags;
1481 2279
1482 if (expect_true (!reify)) 2280 if (ecb_expect_true (!reify))
1483 { 2281 {
1484 ++fdchangecnt; 2282 ++fdchangecnt;
1485 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2283 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
1486 fdchanges [fdchangecnt - 1] = fd; 2284 fdchanges [fdchangecnt - 1] = fd;
1487 } 2285 }
1488} 2286}
1489 2287
1490/* 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 */
1491inline_speed void ecb_cold 2289inline_speed ecb_cold void
1492fd_kill (EV_P_ int fd) 2290fd_kill (EV_P_ int fd)
1493{ 2291{
1494 ev_io *w; 2292 ev_io *w;
1495 2293
1496 while ((w = (ev_io *)anfds [fd].head)) 2294 while ((w = (ev_io *)anfds [fd].head))
… …
1499 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);
1500 } 2298 }
1501} 2299}
1502 2300
1503/* check whether the given fd is actually valid, for error recovery */ 2301/* check whether the given fd is actually valid, for error recovery */
1504inline_size int ecb_cold 2302inline_size ecb_cold int
1505fd_valid (int fd) 2303fd_valid (int fd)
1506{ 2304{
1507#ifdef _WIN32 2305#ifdef _WIN32
1508 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2306 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1509#else 2307#else
1510 return fcntl (fd, F_GETFD) != -1; 2308 return fcntl (fd, F_GETFD) != -1;
1511#endif 2309#endif
1512} 2310}
1513 2311
1514/* called on EBADF to verify fds */ 2312/* called on EBADF to verify fds */
1515static void noinline ecb_cold 2313ecb_noinline ecb_cold
2314static void
1516fd_ebadf (EV_P) 2315fd_ebadf (EV_P)
1517{ 2316{
1518 int fd; 2317 int fd;
1519 2318
1520 for (fd = 0; fd < anfdmax; ++fd) 2319 for (fd = 0; fd < anfdmax; ++fd)
… …
1522 if (!fd_valid (fd) && errno == EBADF) 2321 if (!fd_valid (fd) && errno == EBADF)
1523 fd_kill (EV_A_ fd); 2322 fd_kill (EV_A_ fd);
1524} 2323}
1525 2324
1526/* 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 */
1527static void noinline ecb_cold 2326ecb_noinline ecb_cold
2327static void
1528fd_enomem (EV_P) 2328fd_enomem (EV_P)
1529{ 2329{
1530 int fd; 2330 int fd;
1531 2331
1532 for (fd = anfdmax; fd--; ) 2332 for (fd = anfdmax; fd--; )
… …
1536 break; 2336 break;
1537 } 2337 }
1538} 2338}
1539 2339
1540/* 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 */
1541static void noinline 2341ecb_noinline
2342static void
1542fd_rearm_all (EV_P) 2343fd_rearm_all (EV_P)
1543{ 2344{
1544 int fd; 2345 int fd;
1545 2346
1546 for (fd = 0; fd < anfdmax; ++fd) 2347 for (fd = 0; fd < anfdmax; ++fd)
… …
1599 ev_tstamp minat; 2400 ev_tstamp minat;
1600 ANHE *minpos; 2401 ANHE *minpos;
1601 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2402 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1602 2403
1603 /* find minimum child */ 2404 /* find minimum child */
1604 if (expect_true (pos + DHEAP - 1 < E)) 2405 if (ecb_expect_true (pos + DHEAP - 1 < E))
1605 { 2406 {
1606 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2407 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1607 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));
1608 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));
1609 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));
1610 } 2411 }
1611 else if (pos < E) 2412 else if (pos < E)
1612 { 2413 {
1613 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2414 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1614 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));
1615 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));
1616 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));
1617 } 2418 }
1618 else 2419 else
1619 break; 2420 break;
1620 2421
1621 if (ANHE_at (he) <= minat) 2422 if (ANHE_at (he) <= minat)
… …
1629 2430
1630 heap [k] = he; 2431 heap [k] = he;
1631 ev_active (ANHE_w (he)) = k; 2432 ev_active (ANHE_w (he)) = k;
1632} 2433}
1633 2434
1634#else /* 4HEAP */ 2435#else /* not 4HEAP */
1635 2436
1636#define HEAP0 1 2437#define HEAP0 1
1637#define HPARENT(k) ((k) >> 1) 2438#define HPARENT(k) ((k) >> 1)
1638#define UPHEAP_DONE(p,k) (!(p)) 2439#define UPHEAP_DONE(p,k) (!(p))
1639 2440
… …
1727 2528
1728/*****************************************************************************/ 2529/*****************************************************************************/
1729 2530
1730#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2531#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1731 2532
1732static void noinline ecb_cold 2533ecb_noinline ecb_cold
2534static void
1733evpipe_init (EV_P) 2535evpipe_init (EV_P)
1734{ 2536{
1735 if (!ev_is_active (&pipe_w)) 2537 if (!ev_is_active (&pipe_w))
1736 { 2538 {
2539 int fds [2];
2540
1737# if EV_USE_EVENTFD 2541# if EV_USE_EVENTFD
2542 fds [0] = -1;
1738 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2543 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1739 if (evfd < 0 && errno == EINVAL) 2544 if (fds [1] < 0 && errno == EINVAL)
1740 evfd = eventfd (0, 0); 2545 fds [1] = eventfd (0, 0);
1741 2546
1742 if (evfd >= 0) 2547 if (fds [1] < 0)
2548# endif
1743 { 2549 {
2550 while (pipe (fds))
2551 ev_syserr ("(libev) error creating signal/async pipe");
2552
2553 fd_intern (fds [0]);
2554 }
2555
1744 evpipe [0] = -1; 2556 evpipe [0] = fds [0];
1745 fd_intern (evfd); /* doing it twice doesn't hurt */ 2557
1746 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));
1747 } 2608 }
1748 else 2609 else
1749# endif 2610#endif
1750 { 2611 {
1751 while (pipe (evpipe)) 2612#ifdef _WIN32
1752 ev_syserr ("(libev) error creating signal/async pipe"); 2613 WSABUF buf;
1753 2614 DWORD sent;
1754 fd_intern (evpipe [0]); 2615 buf.buf = (char *)&buf;
1755 fd_intern (evpipe [1]); 2616 buf.len = 1;
1756 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2617 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1757 } 2618#else
1758
1759 ev_io_start (EV_A_ &pipe_w);
1760 ev_unref (EV_A); /* watcher should not keep loop alive */
1761 }
1762}
1763
1764inline_speed void
1765evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1766{
1767 if (expect_true (*flag))
1768 return;
1769
1770 *flag = 1;
1771
1772 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1773
1774 pipe_write_skipped = 1;
1775
1776 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1777
1778 if (pipe_write_wanted)
1779 {
1780 int old_errno;
1781
1782 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1783
1784 old_errno = errno; /* save errno because write will clobber it */
1785
1786#if EV_USE_EVENTFD
1787 if (evfd >= 0)
1788 {
1789 uint64_t counter = 1;
1790 write (evfd, &counter, sizeof (uint64_t));
1791 }
1792 else
1793#endif
1794 {
1795 /* win32 people keep sending patches that change this write() to send() */
1796 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1797 /* so when you think this write should be a send instead, please find out */
1798 /* where your send() is from - it's definitely not the microsoft send, and */
1799 /* tell me. thank you. */
1800 write (evpipe [1], &(evpipe [1]), 1); 2619 write (evpipe [1], &(evpipe [1]), 1);
2620#endif
1801 } 2621 }
1802 2622
1803 errno = old_errno; 2623 errno = old_errno;
1804 } 2624 }
1805} 2625}
… …
1812 int i; 2632 int i;
1813 2633
1814 if (revents & EV_READ) 2634 if (revents & EV_READ)
1815 { 2635 {
1816#if EV_USE_EVENTFD 2636#if EV_USE_EVENTFD
1817 if (evfd >= 0) 2637 if (evpipe [0] < 0)
1818 { 2638 {
1819 uint64_t counter; 2639 uint64_t counter;
1820 read (evfd, &counter, sizeof (uint64_t)); 2640 read (evpipe [1], &counter, sizeof (uint64_t));
1821 } 2641 }
1822 else 2642 else
1823#endif 2643#endif
1824 { 2644 {
1825 char dummy; 2645 char dummy[4];
1826 /* 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
1827 read (evpipe [0], &dummy, 1); 2654 read (evpipe [0], &dummy, sizeof (dummy));
2655#endif
1828 } 2656 }
1829 } 2657 }
1830 2658
1831 pipe_write_skipped = 0; 2659 pipe_write_skipped = 0;
2660
2661 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1832 2662
1833#if EV_SIGNAL_ENABLE 2663#if EV_SIGNAL_ENABLE
1834 if (sig_pending) 2664 if (sig_pending)
1835 { 2665 {
1836 sig_pending = 0; 2666 sig_pending = 0;
1837 2667
2668 ECB_MEMORY_FENCE;
2669
1838 for (i = EV_NSIG - 1; i--; ) 2670 for (i = EV_NSIG - 1; i--; )
1839 if (expect_false (signals [i].pending)) 2671 if (ecb_expect_false (signals [i].pending))
1840 ev_feed_signal_event (EV_A_ i + 1); 2672 ev_feed_signal_event (EV_A_ i + 1);
1841 } 2673 }
1842#endif 2674#endif
1843 2675
1844#if EV_ASYNC_ENABLE 2676#if EV_ASYNC_ENABLE
1845 if (async_pending) 2677 if (async_pending)
1846 { 2678 {
1847 async_pending = 0; 2679 async_pending = 0;
2680
2681 ECB_MEMORY_FENCE;
1848 2682
1849 for (i = asynccnt; i--; ) 2683 for (i = asynccnt; i--; )
1850 if (asyncs [i]->sent) 2684 if (asyncs [i]->sent)
1851 { 2685 {
1852 asyncs [i]->sent = 0; 2686 asyncs [i]->sent = 0;
2687 ECB_MEMORY_FENCE_RELEASE;
1853 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2688 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1854 } 2689 }
1855 } 2690 }
1856#endif 2691#endif
1857} 2692}
1858 2693
1859/*****************************************************************************/ 2694/*****************************************************************************/
1860 2695
1861void 2696void
1862ev_feed_signal (int signum) 2697ev_feed_signal (int signum) EV_NOEXCEPT
1863{ 2698{
1864#if EV_MULTIPLICITY 2699#if EV_MULTIPLICITY
2700 EV_P;
2701 ECB_MEMORY_FENCE_ACQUIRE;
1865 EV_P = signals [signum - 1].loop; 2702 EV_A = signals [signum - 1].loop;
1866 2703
1867 if (!EV_A) 2704 if (!EV_A)
1868 return; 2705 return;
1869#endif 2706#endif
1870 2707
1871 if (!ev_active (&pipe_w))
1872 return;
1873
1874 signals [signum - 1].pending = 1; 2708 signals [signum - 1].pending = 1;
1875 evpipe_write (EV_A_ &sig_pending); 2709 evpipe_write (EV_A_ &sig_pending);
1876} 2710}
1877 2711
1878static void 2712static void
… …
1883#endif 2717#endif
1884 2718
1885 ev_feed_signal (signum); 2719 ev_feed_signal (signum);
1886} 2720}
1887 2721
1888void noinline 2722ecb_noinline
2723void
1889ev_feed_signal_event (EV_P_ int signum) 2724ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1890{ 2725{
1891 WL w; 2726 WL w;
1892 2727
1893 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2728 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
1894 return; 2729 return;
1895 2730
1896 --signum; 2731 --signum;
1897 2732
1898#if EV_MULTIPLICITY 2733#if EV_MULTIPLICITY
1899 /* 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 */
1900 /* or, likely more useful, feeding a signal nobody is waiting for */ 2735 /* or, likely more useful, feeding a signal nobody is waiting for */
1901 2736
1902 if (expect_false (signals [signum].loop != EV_A)) 2737 if (ecb_expect_false (signals [signum].loop != EV_A))
1903 return; 2738 return;
1904#endif 2739#endif
1905 2740
1906 signals [signum].pending = 0; 2741 signals [signum].pending = 0;
2742 ECB_MEMORY_FENCE_RELEASE;
1907 2743
1908 for (w = signals [signum].head; w; w = w->next) 2744 for (w = signals [signum].head; w; w = w->next)
1909 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2745 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1910} 2746}
1911 2747
… …
2002# include "ev_kqueue.c" 2838# include "ev_kqueue.c"
2003#endif 2839#endif
2004#if EV_USE_EPOLL 2840#if EV_USE_EPOLL
2005# include "ev_epoll.c" 2841# include "ev_epoll.c"
2006#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
2007#if EV_USE_POLL 2849#if EV_USE_POLL
2008# include "ev_poll.c" 2850# include "ev_poll.c"
2009#endif 2851#endif
2010#if EV_USE_SELECT 2852#if EV_USE_SELECT
2011# include "ev_select.c" 2853# include "ev_select.c"
2012#endif 2854#endif
2013 2855
2014int ecb_cold 2856ecb_cold int
2015ev_version_major (void) 2857ev_version_major (void) EV_NOEXCEPT
2016{ 2858{
2017 return EV_VERSION_MAJOR; 2859 return EV_VERSION_MAJOR;
2018} 2860}
2019 2861
2020int ecb_cold 2862ecb_cold int
2021ev_version_minor (void) 2863ev_version_minor (void) EV_NOEXCEPT
2022{ 2864{
2023 return EV_VERSION_MINOR; 2865 return EV_VERSION_MINOR;
2024} 2866}
2025 2867
2026/* 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 */
2027int inline_size ecb_cold 2869inline_size ecb_cold int
2028enable_secure (void) 2870enable_secure (void)
2029{ 2871{
2030#ifdef _WIN32 2872#ifdef _WIN32
2031 return 0; 2873 return 0;
2032#else 2874#else
2033 return getuid () != geteuid () 2875 return getuid () != geteuid ()
2034 || getgid () != getegid (); 2876 || getgid () != getegid ();
2035#endif 2877#endif
2036} 2878}
2037 2879
2038unsigned int ecb_cold 2880ecb_cold
2881unsigned int
2039ev_supported_backends (void) 2882ev_supported_backends (void) EV_NOEXCEPT
2040{ 2883{
2041 unsigned int flags = 0; 2884 unsigned int flags = 0;
2042 2885
2043 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2886 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2044 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2887 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
2045 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;
2046 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2891 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
2047 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2892 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
2048 2893
2049 return flags; 2894 return flags;
2050} 2895}
2051 2896
2052unsigned int ecb_cold 2897ecb_cold
2898unsigned int
2053ev_recommended_backends (void) 2899ev_recommended_backends (void) EV_NOEXCEPT
2054{ 2900{
2055 unsigned int flags = ev_supported_backends (); 2901 unsigned int flags = ev_supported_backends ();
2056 2902
2057#ifndef __NetBSD__ 2903#ifndef __NetBSD__
2058 /* kqueue is borked on everything but netbsd apparently */ 2904 /* kqueue is borked on everything but netbsd apparently */
… …
2066#endif 2912#endif
2067#ifdef __FreeBSD__ 2913#ifdef __FreeBSD__
2068 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) */
2069#endif 2915#endif
2070 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
2071 return flags; 2926 return flags;
2072} 2927}
2073 2928
2074unsigned int ecb_cold 2929ecb_cold
2930unsigned int
2075ev_embeddable_backends (void) 2931ev_embeddable_backends (void) EV_NOEXCEPT
2076{ 2932{
2077 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2933 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2078 2934
2079 /* 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 */
2080 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 */
2081 flags &= ~EVBACKEND_EPOLL; 2937 flags &= ~EVBACKEND_EPOLL;
2082 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
2083 return flags; 2946 return flags;
2084} 2947}
2085 2948
2086unsigned int 2949unsigned int
2087ev_backend (EV_P) 2950ev_backend (EV_P) EV_NOEXCEPT
2088{ 2951{
2089 return backend; 2952 return backend;
2090} 2953}
2091 2954
2092#if EV_FEATURE_API 2955#if EV_FEATURE_API
2093unsigned int 2956unsigned int
2094ev_iteration (EV_P) 2957ev_iteration (EV_P) EV_NOEXCEPT
2095{ 2958{
2096 return loop_count; 2959 return loop_count;
2097} 2960}
2098 2961
2099unsigned int 2962unsigned int
2100ev_depth (EV_P) 2963ev_depth (EV_P) EV_NOEXCEPT
2101{ 2964{
2102 return loop_depth; 2965 return loop_depth;
2103} 2966}
2104 2967
2105void 2968void
2106ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2969ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2107{ 2970{
2108 io_blocktime = interval; 2971 io_blocktime = interval;
2109} 2972}
2110 2973
2111void 2974void
2112ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2975ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2113{ 2976{
2114 timeout_blocktime = interval; 2977 timeout_blocktime = interval;
2115} 2978}
2116 2979
2117void 2980void
2118ev_set_userdata (EV_P_ void *data) 2981ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2119{ 2982{
2120 userdata = data; 2983 userdata = data;
2121} 2984}
2122 2985
2123void * 2986void *
2124ev_userdata (EV_P) 2987ev_userdata (EV_P) EV_NOEXCEPT
2125{ 2988{
2126 return userdata; 2989 return userdata;
2127} 2990}
2128 2991
2129void 2992void
2130ev_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
2131{ 2994{
2132 invoke_cb = invoke_pending_cb; 2995 invoke_cb = invoke_pending_cb;
2133} 2996}
2134 2997
2135void 2998void
2136ev_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
2137{ 3000{
2138 release_cb = release; 3001 release_cb = release;
2139 acquire_cb = acquire; 3002 acquire_cb = acquire;
2140} 3003}
2141#endif 3004#endif
2142 3005
2143/* initialise a loop structure, must be zero-initialised */ 3006/* initialise a loop structure, must be zero-initialised */
2144static void noinline ecb_cold 3007ecb_noinline ecb_cold
3008static void
2145loop_init (EV_P_ unsigned int flags) 3009loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
2146{ 3010{
2147 if (!backend) 3011 if (!backend)
2148 { 3012 {
2149 origflags = flags; 3013 origflags = flags;
2150 3014
… …
2195#if EV_ASYNC_ENABLE 3059#if EV_ASYNC_ENABLE
2196 async_pending = 0; 3060 async_pending = 0;
2197#endif 3061#endif
2198 pipe_write_skipped = 0; 3062 pipe_write_skipped = 0;
2199 pipe_write_wanted = 0; 3063 pipe_write_wanted = 0;
3064 evpipe [0] = -1;
3065 evpipe [1] = -1;
2200#if EV_USE_INOTIFY 3066#if EV_USE_INOTIFY
2201 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3067 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2202#endif 3068#endif
2203#if EV_USE_SIGNALFD 3069#if EV_USE_SIGNALFD
2204 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 3070 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
… …
2206 3072
2207 if (!(flags & EVBACKEND_MASK)) 3073 if (!(flags & EVBACKEND_MASK))
2208 flags |= ev_recommended_backends (); 3074 flags |= ev_recommended_backends ();
2209 3075
2210#if EV_USE_IOCP 3076#if EV_USE_IOCP
2211 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 3077 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2212#endif 3078#endif
2213#if EV_USE_PORT 3079#if EV_USE_PORT
2214 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3080 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
2215#endif 3081#endif
2216#if EV_USE_KQUEUE 3082#if EV_USE_KQUEUE
2217 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);
2218#endif 3090#endif
2219#if EV_USE_EPOLL 3091#if EV_USE_EPOLL
2220 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3092 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
2221#endif 3093#endif
2222#if EV_USE_POLL 3094#if EV_USE_POLL
2223 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3095 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
2224#endif 3096#endif
2225#if EV_USE_SELECT 3097#if EV_USE_SELECT
2226 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3098 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
2227#endif 3099#endif
2228 3100
2229 ev_prepare_init (&pending_w, pendingcb); 3101 ev_prepare_init (&pending_w, pendingcb);
2230 3102
2231#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3103#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
2234#endif 3106#endif
2235 } 3107 }
2236} 3108}
2237 3109
2238/* free up a loop structure */ 3110/* free up a loop structure */
2239void ecb_cold 3111ecb_cold
3112void
2240ev_loop_destroy (EV_P) 3113ev_loop_destroy (EV_P)
2241{ 3114{
2242 int i; 3115 int i;
2243 3116
2244#if EV_MULTIPLICITY 3117#if EV_MULTIPLICITY
… …
2247 return; 3120 return;
2248#endif 3121#endif
2249 3122
2250#if EV_CLEANUP_ENABLE 3123#if EV_CLEANUP_ENABLE
2251 /* queue cleanup watchers (and execute them) */ 3124 /* queue cleanup watchers (and execute them) */
2252 if (expect_false (cleanupcnt)) 3125 if (ecb_expect_false (cleanupcnt))
2253 { 3126 {
2254 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); 3127 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2255 EV_INVOKE_PENDING; 3128 EV_INVOKE_PENDING;
2256 } 3129 }
2257#endif 3130#endif
2258 3131
2259#if EV_CHILD_ENABLE 3132#if EV_CHILD_ENABLE
2260 if (ev_is_active (&childev)) 3133 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2261 { 3134 {
2262 ev_ref (EV_A); /* child watcher */ 3135 ev_ref (EV_A); /* child watcher */
2263 ev_signal_stop (EV_A_ &childev); 3136 ev_signal_stop (EV_A_ &childev);
2264 } 3137 }
2265#endif 3138#endif
… …
2267 if (ev_is_active (&pipe_w)) 3140 if (ev_is_active (&pipe_w))
2268 { 3141 {
2269 /*ev_ref (EV_A);*/ 3142 /*ev_ref (EV_A);*/
2270 /*ev_io_stop (EV_A_ &pipe_w);*/ 3143 /*ev_io_stop (EV_A_ &pipe_w);*/
2271 3144
2272#if EV_USE_EVENTFD
2273 if (evfd >= 0)
2274 close (evfd);
2275#endif
2276
2277 if (evpipe [0] >= 0)
2278 {
2279 EV_WIN32_CLOSE_FD (evpipe [0]); 3145 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2280 EV_WIN32_CLOSE_FD (evpipe [1]); 3146 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2281 }
2282 } 3147 }
2283 3148
2284#if EV_USE_SIGNALFD 3149#if EV_USE_SIGNALFD
2285 if (ev_is_active (&sigfd_w)) 3150 if (ev_is_active (&sigfd_w))
2286 close (sigfd); 3151 close (sigfd);
… …
2293 3158
2294 if (backend_fd >= 0) 3159 if (backend_fd >= 0)
2295 close (backend_fd); 3160 close (backend_fd);
2296 3161
2297#if EV_USE_IOCP 3162#if EV_USE_IOCP
2298 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3163 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2299#endif 3164#endif
2300#if EV_USE_PORT 3165#if EV_USE_PORT
2301 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3166 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
2302#endif 3167#endif
2303#if EV_USE_KQUEUE 3168#if EV_USE_KQUEUE
2304 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);
2305#endif 3176#endif
2306#if EV_USE_EPOLL 3177#if EV_USE_EPOLL
2307 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3178 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
2308#endif 3179#endif
2309#if EV_USE_POLL 3180#if EV_USE_POLL
2310 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3181 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
2311#endif 3182#endif
2312#if EV_USE_SELECT 3183#if EV_USE_SELECT
2313 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3184 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
2314#endif 3185#endif
2315 3186
2316 for (i = NUMPRI; i--; ) 3187 for (i = NUMPRI; i--; )
2317 { 3188 {
2318 array_free (pending, [i]); 3189 array_free (pending, [i]);
… …
2360 3231
2361inline_size void 3232inline_size void
2362loop_fork (EV_P) 3233loop_fork (EV_P)
2363{ 3234{
2364#if EV_USE_PORT 3235#if EV_USE_PORT
2365 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3236 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
2366#endif 3237#endif
2367#if EV_USE_KQUEUE 3238#if EV_USE_KQUEUE
2368 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);
2369#endif 3246#endif
2370#if EV_USE_EPOLL 3247#if EV_USE_EPOLL
2371 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3248 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
2372#endif 3249#endif
2373#if EV_USE_INOTIFY 3250#if EV_USE_INOTIFY
2374 infy_fork (EV_A); 3251 infy_fork (EV_A);
2375#endif 3252#endif
2376 3253
3254#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2377 if (ev_is_active (&pipe_w)) 3255 if (ev_is_active (&pipe_w) && postfork != 2)
2378 { 3256 {
2379 /* 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 */
2380 3258
2381 ev_ref (EV_A); 3259 ev_ref (EV_A);
2382 ev_io_stop (EV_A_ &pipe_w); 3260 ev_io_stop (EV_A_ &pipe_w);
2383 3261
2384#if EV_USE_EVENTFD
2385 if (evfd >= 0)
2386 close (evfd);
2387#endif
2388
2389 if (evpipe [0] >= 0) 3262 if (evpipe [0] >= 0)
2390 {
2391 EV_WIN32_CLOSE_FD (evpipe [0]); 3263 EV_WIN32_CLOSE_FD (evpipe [0]);
2392 EV_WIN32_CLOSE_FD (evpipe [1]);
2393 }
2394 3264
2395#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2396 evpipe_init (EV_A); 3265 evpipe_init (EV_A);
2397 /* now iterate over everything, in case we missed something */ 3266 /* iterate over everything, in case we missed something before */
2398 pipecb (EV_A_ &pipe_w, EV_READ); 3267 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2399#endif
2400 } 3268 }
3269#endif
2401 3270
2402 postfork = 0; 3271 postfork = 0;
2403} 3272}
2404 3273
2405#if EV_MULTIPLICITY 3274#if EV_MULTIPLICITY
2406 3275
3276ecb_cold
2407struct ev_loop * ecb_cold 3277struct ev_loop *
2408ev_loop_new (unsigned int flags) 3278ev_loop_new (unsigned int flags) EV_NOEXCEPT
2409{ 3279{
2410 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3280 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2411 3281
2412 memset (EV_A, 0, sizeof (struct ev_loop)); 3282 memset (EV_A, 0, sizeof (struct ev_loop));
2413 loop_init (EV_A_ flags); 3283 loop_init (EV_A_ flags);
… …
2420} 3290}
2421 3291
2422#endif /* multiplicity */ 3292#endif /* multiplicity */
2423 3293
2424#if EV_VERIFY 3294#if EV_VERIFY
2425static void noinline ecb_cold 3295ecb_noinline ecb_cold
3296static void
2426verify_watcher (EV_P_ W w) 3297verify_watcher (EV_P_ W w)
2427{ 3298{
2428 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));
2429 3300
2430 if (w->pending) 3301 if (w->pending)
2431 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));
2432} 3303}
2433 3304
2434static void noinline ecb_cold 3305ecb_noinline ecb_cold
3306static void
2435verify_heap (EV_P_ ANHE *heap, int N) 3307verify_heap (EV_P_ ANHE *heap, int N)
2436{ 3308{
2437 int i; 3309 int i;
2438 3310
2439 for (i = HEAP0; i < N + HEAP0; ++i) 3311 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2444 3316
2445 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3317 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2446 } 3318 }
2447} 3319}
2448 3320
2449static void noinline ecb_cold 3321ecb_noinline ecb_cold
3322static void
2450array_verify (EV_P_ W *ws, int cnt) 3323array_verify (EV_P_ W *ws, int cnt)
2451{ 3324{
2452 while (cnt--) 3325 while (cnt--)
2453 { 3326 {
2454 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3327 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2457} 3330}
2458#endif 3331#endif
2459 3332
2460#if EV_FEATURE_API 3333#if EV_FEATURE_API
2461void ecb_cold 3334void ecb_cold
2462ev_verify (EV_P) 3335ev_verify (EV_P) EV_NOEXCEPT
2463{ 3336{
2464#if EV_VERIFY 3337#if EV_VERIFY
2465 int i; 3338 int i;
2466 WL w; 3339 WL w, w2;
2467 3340
2468 assert (activecnt >= -1); 3341 assert (activecnt >= -1);
2469 3342
2470 assert (fdchangemax >= fdchangecnt); 3343 assert (fdchangemax >= fdchangecnt);
2471 for (i = 0; i < fdchangecnt; ++i) 3344 for (i = 0; i < fdchangecnt; ++i)
2472 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3345 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2473 3346
2474 assert (anfdmax >= 0); 3347 assert (anfdmax >= 0);
2475 for (i = 0; i < anfdmax; ++i) 3348 for (i = 0; i < anfdmax; ++i)
3349 {
3350 int j = 0;
3351
2476 for (w = anfds [i].head; w; w = w->next) 3352 for (w = w2 = anfds [i].head; w; w = w->next)
2477 { 3353 {
2478 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
2479 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));
2480 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));
2481 } 3364 }
3365 }
2482 3366
2483 assert (timermax >= timercnt); 3367 assert (timermax >= timercnt);
2484 verify_heap (EV_A_ timers, timercnt); 3368 verify_heap (EV_A_ timers, timercnt);
2485 3369
2486#if EV_PERIODIC_ENABLE 3370#if EV_PERIODIC_ENABLE
… …
2532#endif 3416#endif
2533} 3417}
2534#endif 3418#endif
2535 3419
2536#if EV_MULTIPLICITY 3420#if EV_MULTIPLICITY
3421ecb_cold
2537struct ev_loop * ecb_cold 3422struct ev_loop *
2538#else 3423#else
2539int 3424int
2540#endif 3425#endif
2541ev_default_loop (unsigned int flags) 3426ev_default_loop (unsigned int flags) EV_NOEXCEPT
2542{ 3427{
2543 if (!ev_default_loop_ptr) 3428 if (!ev_default_loop_ptr)
2544 { 3429 {
2545#if EV_MULTIPLICITY 3430#if EV_MULTIPLICITY
2546 EV_P = ev_default_loop_ptr = &default_loop_struct; 3431 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2565 3450
2566 return ev_default_loop_ptr; 3451 return ev_default_loop_ptr;
2567} 3452}
2568 3453
2569void 3454void
2570ev_loop_fork (EV_P) 3455ev_loop_fork (EV_P) EV_NOEXCEPT
2571{ 3456{
2572 postfork = 1; /* must be in line with ev_default_fork */ 3457 postfork = 1;
2573} 3458}
2574 3459
2575/*****************************************************************************/ 3460/*****************************************************************************/
2576 3461
2577void 3462void
… …
2579{ 3464{
2580 EV_CB_INVOKE ((W)w, revents); 3465 EV_CB_INVOKE ((W)w, revents);
2581} 3466}
2582 3467
2583unsigned int 3468unsigned int
2584ev_pending_count (EV_P) 3469ev_pending_count (EV_P) EV_NOEXCEPT
2585{ 3470{
2586 int pri; 3471 int pri;
2587 unsigned int count = 0; 3472 unsigned int count = 0;
2588 3473
2589 for (pri = NUMPRI; pri--; ) 3474 for (pri = NUMPRI; pri--; )
2590 count += pendingcnt [pri]; 3475 count += pendingcnt [pri];
2591 3476
2592 return count; 3477 return count;
2593} 3478}
2594 3479
2595void noinline 3480ecb_noinline
3481void
2596ev_invoke_pending (EV_P) 3482ev_invoke_pending (EV_P)
2597{ 3483{
2598 int pri; 3484 pendingpri = NUMPRI;
2599 3485
2600 for (pri = NUMPRI; pri--; ) 3486 do
3487 {
3488 --pendingpri;
3489
3490 /* pendingpri possibly gets modified in the inner loop */
2601 while (pendingcnt [pri]) 3491 while (pendingcnt [pendingpri])
2602 { 3492 {
2603 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3493 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2604 3494
2605 p->w->pending = 0; 3495 p->w->pending = 0;
2606 EV_CB_INVOKE (p->w, p->events); 3496 EV_CB_INVOKE (p->w, p->events);
2607 EV_FREQUENT_CHECK; 3497 EV_FREQUENT_CHECK;
2608 } 3498 }
3499 }
3500 while (pendingpri);
2609} 3501}
2610 3502
2611#if EV_IDLE_ENABLE 3503#if EV_IDLE_ENABLE
2612/* make idle watchers pending. this handles the "call-idle */ 3504/* make idle watchers pending. this handles the "call-idle */
2613/* only when higher priorities are idle" logic */ 3505/* only when higher priorities are idle" logic */
2614inline_size void 3506inline_size void
2615idle_reify (EV_P) 3507idle_reify (EV_P)
2616{ 3508{
2617 if (expect_false (idleall)) 3509 if (ecb_expect_false (idleall))
2618 { 3510 {
2619 int pri; 3511 int pri;
2620 3512
2621 for (pri = NUMPRI; pri--; ) 3513 for (pri = NUMPRI; pri--; )
2622 { 3514 {
… …
2671 } 3563 }
2672} 3564}
2673 3565
2674#if EV_PERIODIC_ENABLE 3566#if EV_PERIODIC_ENABLE
2675 3567
2676static void noinline 3568ecb_noinline
3569static void
2677periodic_recalc (EV_P_ ev_periodic *w) 3570periodic_recalc (EV_P_ ev_periodic *w)
2678{ 3571{
2679 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3572 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2680 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);
2681 3574
… …
2683 while (at <= ev_rt_now) 3576 while (at <= ev_rt_now)
2684 { 3577 {
2685 ev_tstamp nat = at + w->interval; 3578 ev_tstamp nat = at + w->interval;
2686 3579
2687 /* when resolution fails us, we use ev_rt_now */ 3580 /* when resolution fails us, we use ev_rt_now */
2688 if (expect_false (nat == at)) 3581 if (ecb_expect_false (nat == at))
2689 { 3582 {
2690 at = ev_rt_now; 3583 at = ev_rt_now;
2691 break; 3584 break;
2692 } 3585 }
2693 3586
… …
2703{ 3596{
2704 EV_FREQUENT_CHECK; 3597 EV_FREQUENT_CHECK;
2705 3598
2706 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3599 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2707 { 3600 {
2708 int feed_count = 0;
2709
2710 do 3601 do
2711 { 3602 {
2712 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3603 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2713 3604
2714 /*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)));*/
… …
2741 } 3632 }
2742} 3633}
2743 3634
2744/* simply recalculate all periodics */ 3635/* simply recalculate all periodics */
2745/* 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? */
2746static void noinline ecb_cold 3637ecb_noinline ecb_cold
3638static void
2747periodics_reschedule (EV_P) 3639periodics_reschedule (EV_P)
2748{ 3640{
2749 int i; 3641 int i;
2750 3642
2751 /* adjust periodics after time jump */ 3643 /* adjust periodics after time jump */
… …
2764 reheap (periodics, periodiccnt); 3656 reheap (periodics, periodiccnt);
2765} 3657}
2766#endif 3658#endif
2767 3659
2768/* adjust all timers by a given offset */ 3660/* adjust all timers by a given offset */
2769static void noinline ecb_cold 3661ecb_noinline ecb_cold
3662static void
2770timers_reschedule (EV_P_ ev_tstamp adjust) 3663timers_reschedule (EV_P_ ev_tstamp adjust)
2771{ 3664{
2772 int i; 3665 int i;
2773 3666
2774 for (i = 0; i < timercnt; ++i) 3667 for (i = 0; i < timercnt; ++i)
… …
2783/* also detect if there was a timejump, and act accordingly */ 3676/* also detect if there was a timejump, and act accordingly */
2784inline_speed void 3677inline_speed void
2785time_update (EV_P_ ev_tstamp max_block) 3678time_update (EV_P_ ev_tstamp max_block)
2786{ 3679{
2787#if EV_USE_MONOTONIC 3680#if EV_USE_MONOTONIC
2788 if (expect_true (have_monotonic)) 3681 if (ecb_expect_true (have_monotonic))
2789 { 3682 {
2790 int i; 3683 int i;
2791 ev_tstamp odiff = rtmn_diff; 3684 ev_tstamp odiff = rtmn_diff;
2792 3685
2793 mn_now = get_clock (); 3686 mn_now = get_clock ();
2794 3687
2795 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3688 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2796 /* interpolate in the meantime */ 3689 /* interpolate in the meantime */
2797 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3690 if (ecb_expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
2798 { 3691 {
2799 ev_rt_now = rtmn_diff + mn_now; 3692 ev_rt_now = rtmn_diff + mn_now;
2800 return; 3693 return;
2801 } 3694 }
2802 3695
… …
2816 ev_tstamp diff; 3709 ev_tstamp diff;
2817 rtmn_diff = ev_rt_now - mn_now; 3710 rtmn_diff = ev_rt_now - mn_now;
2818 3711
2819 diff = odiff - rtmn_diff; 3712 diff = odiff - rtmn_diff;
2820 3713
2821 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP)) 3714 if (ecb_expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2822 return; /* all is well */ 3715 return; /* all is well */
2823 3716
2824 ev_rt_now = ev_time (); 3717 ev_rt_now = ev_time ();
2825 mn_now = get_clock (); 3718 mn_now = get_clock ();
2826 now_floor = mn_now; 3719 now_floor = mn_now;
… …
2835 else 3728 else
2836#endif 3729#endif
2837 { 3730 {
2838 ev_rt_now = ev_time (); 3731 ev_rt_now = ev_time ();
2839 3732
2840 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))
2841 { 3734 {
2842 /* 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 */
2843 timers_reschedule (EV_A_ ev_rt_now - mn_now); 3736 timers_reschedule (EV_A_ ev_rt_now - mn_now);
2844#if EV_PERIODIC_ENABLE 3737#if EV_PERIODIC_ENABLE
2845 periodics_reschedule (EV_A); 3738 periodics_reschedule (EV_A);
… …
2848 3741
2849 mn_now = ev_rt_now; 3742 mn_now = ev_rt_now;
2850 } 3743 }
2851} 3744}
2852 3745
2853void 3746int
2854ev_run (EV_P_ int flags) 3747ev_run (EV_P_ int flags)
2855{ 3748{
2856#if EV_FEATURE_API 3749#if EV_FEATURE_API
2857 ++loop_depth; 3750 ++loop_depth;
2858#endif 3751#endif
… …
2868#if EV_VERIFY >= 2 3761#if EV_VERIFY >= 2
2869 ev_verify (EV_A); 3762 ev_verify (EV_A);
2870#endif 3763#endif
2871 3764
2872#ifndef _WIN32 3765#ifndef _WIN32
2873 if (expect_false (curpid)) /* penalise the forking check even more */ 3766 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
2874 if (expect_false (getpid () != curpid)) 3767 if (ecb_expect_false (getpid () != curpid))
2875 { 3768 {
2876 curpid = getpid (); 3769 curpid = getpid ();
2877 postfork = 1; 3770 postfork = 1;
2878 } 3771 }
2879#endif 3772#endif
2880 3773
2881#if EV_FORK_ENABLE 3774#if EV_FORK_ENABLE
2882 /* we might have forked, so queue fork handlers */ 3775 /* we might have forked, so queue fork handlers */
2883 if (expect_false (postfork)) 3776 if (ecb_expect_false (postfork))
2884 if (forkcnt) 3777 if (forkcnt)
2885 { 3778 {
2886 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3779 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2887 EV_INVOKE_PENDING; 3780 EV_INVOKE_PENDING;
2888 } 3781 }
2889#endif 3782#endif
2890 3783
2891#if EV_PREPARE_ENABLE 3784#if EV_PREPARE_ENABLE
2892 /* queue prepare watchers (and execute them) */ 3785 /* queue prepare watchers (and execute them) */
2893 if (expect_false (preparecnt)) 3786 if (ecb_expect_false (preparecnt))
2894 { 3787 {
2895 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3788 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2896 EV_INVOKE_PENDING; 3789 EV_INVOKE_PENDING;
2897 } 3790 }
2898#endif 3791#endif
2899 3792
2900 if (expect_false (loop_done)) 3793 if (ecb_expect_false (loop_done))
2901 break; 3794 break;
2902 3795
2903 /* we might have forked, so reify kernel state if necessary */ 3796 /* we might have forked, so reify kernel state if necessary */
2904 if (expect_false (postfork)) 3797 if (ecb_expect_false (postfork))
2905 loop_fork (EV_A); 3798 loop_fork (EV_A);
2906 3799
2907 /* update fd-related kernel structures */ 3800 /* update fd-related kernel structures */
2908 fd_reify (EV_A); 3801 fd_reify (EV_A);
2909 3802
… …
2921 /* from now on, we want a pipe-wake-up */ 3814 /* from now on, we want a pipe-wake-up */
2922 pipe_write_wanted = 1; 3815 pipe_write_wanted = 1;
2923 3816
2924 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 */
2925 3818
2926 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) 3819 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2927 { 3820 {
2928 waittime = MAX_BLOCKTIME; 3821 waittime = MAX_BLOCKTIME;
2929 3822
2930 if (timercnt) 3823 if (timercnt)
2931 { 3824 {
… …
2940 if (waittime > to) waittime = to; 3833 if (waittime > to) waittime = to;
2941 } 3834 }
2942#endif 3835#endif
2943 3836
2944 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3837 /* don't let timeouts decrease the waittime below timeout_blocktime */
2945 if (expect_false (waittime < timeout_blocktime)) 3838 if (ecb_expect_false (waittime < timeout_blocktime))
2946 waittime = timeout_blocktime; 3839 waittime = timeout_blocktime;
2947 3840
2948 /* 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 */
2949 /* to pass a minimum nonzero value to the backend */ 3842 /* to pass a minimum nonzero value to the backend */
2950 if (expect_false (waittime < backend_mintime)) 3843 if (ecb_expect_false (waittime < backend_mintime))
2951 waittime = backend_mintime; 3844 waittime = backend_mintime;
2952 3845
2953 /* extra check because io_blocktime is commonly 0 */ 3846 /* extra check because io_blocktime is commonly 0 */
2954 if (expect_false (io_blocktime)) 3847 if (ecb_expect_false (io_blocktime))
2955 { 3848 {
2956 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3849 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2957 3850
2958 if (sleeptime > waittime - backend_mintime) 3851 if (sleeptime > waittime - backend_mintime)
2959 sleeptime = waittime - backend_mintime; 3852 sleeptime = waittime - backend_mintime;
2960 3853
2961 if (expect_true (sleeptime > 0.)) 3854 if (ecb_expect_true (sleeptime > 0.))
2962 { 3855 {
2963 ev_sleep (sleeptime); 3856 ev_sleep (sleeptime);
2964 waittime -= sleeptime; 3857 waittime -= sleeptime;
2965 } 3858 }
2966 } 3859 }
… …
2971#endif 3864#endif
2972 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ 3865 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2973 backend_poll (EV_A_ waittime); 3866 backend_poll (EV_A_ waittime);
2974 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3867 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2975 3868
2976 pipe_write_wanted = 0; /* just an optimsiation, no fence needed */ 3869 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
2977 3870
3871 ECB_MEMORY_FENCE_ACQUIRE;
2978 if (pipe_write_skipped) 3872 if (pipe_write_skipped)
2979 { 3873 {
2980 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)));
2981 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3875 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2982 } 3876 }
2983 3877
2984
2985 /* update ev_rt_now, do magic */ 3878 /* update ev_rt_now, do magic */
2986 time_update (EV_A_ waittime + sleeptime); 3879 time_update (EV_A_ waittime + sleeptime);
2987 } 3880 }
2988 3881
2989 /* queue pending timers and reschedule them */ 3882 /* queue pending timers and reschedule them */
… …
2997 idle_reify (EV_A); 3890 idle_reify (EV_A);
2998#endif 3891#endif
2999 3892
3000#if EV_CHECK_ENABLE 3893#if EV_CHECK_ENABLE
3001 /* queue check watchers, to be executed first */ 3894 /* queue check watchers, to be executed first */
3002 if (expect_false (checkcnt)) 3895 if (ecb_expect_false (checkcnt))
3003 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3896 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3004#endif 3897#endif
3005 3898
3006 EV_INVOKE_PENDING; 3899 EV_INVOKE_PENDING;
3007 } 3900 }
3008 while (expect_true ( 3901 while (ecb_expect_true (
3009 activecnt 3902 activecnt
3010 && !loop_done 3903 && !loop_done
3011 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) 3904 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
3012 )); 3905 ));
3013 3906
… …
3015 loop_done = EVBREAK_CANCEL; 3908 loop_done = EVBREAK_CANCEL;
3016 3909
3017#if EV_FEATURE_API 3910#if EV_FEATURE_API
3018 --loop_depth; 3911 --loop_depth;
3019#endif 3912#endif
3020}
3021 3913
3914 return activecnt;
3915}
3916
3022void 3917void
3023ev_break (EV_P_ int how) 3918ev_break (EV_P_ int how) EV_NOEXCEPT
3024{ 3919{
3025 loop_done = how; 3920 loop_done = how;
3026} 3921}
3027 3922
3028void 3923void
3029ev_ref (EV_P) 3924ev_ref (EV_P) EV_NOEXCEPT
3030{ 3925{
3031 ++activecnt; 3926 ++activecnt;
3032} 3927}
3033 3928
3034void 3929void
3035ev_unref (EV_P) 3930ev_unref (EV_P) EV_NOEXCEPT
3036{ 3931{
3037 --activecnt; 3932 --activecnt;
3038} 3933}
3039 3934
3040void 3935void
3041ev_now_update (EV_P) 3936ev_now_update (EV_P) EV_NOEXCEPT
3042{ 3937{
3043 time_update (EV_A_ 1e100); 3938 time_update (EV_A_ 1e100);
3044} 3939}
3045 3940
3046void 3941void
3047ev_suspend (EV_P) 3942ev_suspend (EV_P) EV_NOEXCEPT
3048{ 3943{
3049 ev_now_update (EV_A); 3944 ev_now_update (EV_A);
3050} 3945}
3051 3946
3052void 3947void
3053ev_resume (EV_P) 3948ev_resume (EV_P) EV_NOEXCEPT
3054{ 3949{
3055 ev_tstamp mn_prev = mn_now; 3950 ev_tstamp mn_prev = mn_now;
3056 3951
3057 ev_now_update (EV_A); 3952 ev_now_update (EV_A);
3058 timers_reschedule (EV_A_ mn_now - mn_prev); 3953 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
3075inline_size void 3970inline_size void
3076wlist_del (WL *head, WL elem) 3971wlist_del (WL *head, WL elem)
3077{ 3972{
3078 while (*head) 3973 while (*head)
3079 { 3974 {
3080 if (expect_true (*head == elem)) 3975 if (ecb_expect_true (*head == elem))
3081 { 3976 {
3082 *head = elem->next; 3977 *head = elem->next;
3083 break; 3978 break;
3084 } 3979 }
3085 3980
… …
3097 w->pending = 0; 3992 w->pending = 0;
3098 } 3993 }
3099} 3994}
3100 3995
3101int 3996int
3102ev_clear_pending (EV_P_ void *w) 3997ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
3103{ 3998{
3104 W w_ = (W)w; 3999 W w_ = (W)w;
3105 int pending = w_->pending; 4000 int pending = w_->pending;
3106 4001
3107 if (expect_true (pending)) 4002 if (ecb_expect_true (pending))
3108 { 4003 {
3109 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4004 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3110 p->w = (W)&pending_w; 4005 p->w = (W)&pending_w;
3111 w_->pending = 0; 4006 w_->pending = 0;
3112 return p->events; 4007 return p->events;
… …
3139 w->active = 0; 4034 w->active = 0;
3140} 4035}
3141 4036
3142/*****************************************************************************/ 4037/*****************************************************************************/
3143 4038
3144void noinline 4039ecb_noinline
4040void
3145ev_io_start (EV_P_ ev_io *w) 4041ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
3146{ 4042{
3147 int fd = w->fd; 4043 int fd = w->fd;
3148 4044
3149 if (expect_false (ev_is_active (w))) 4045 if (ecb_expect_false (ev_is_active (w)))
3150 return; 4046 return;
3151 4047
3152 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4048 assert (("libev: ev_io_start called with negative fd", fd >= 0));
3153 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))));
3154 4050
4051#if EV_VERIFY >= 2
4052 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4053#endif
3155 EV_FREQUENT_CHECK; 4054 EV_FREQUENT_CHECK;
3156 4055
3157 ev_start (EV_A_ (W)w, 1); 4056 ev_start (EV_A_ (W)w, 1);
3158 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4057 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
3159 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));
3160 4062
3161 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);
3162 w->events &= ~EV__IOFDSET; 4064 w->events &= ~EV__IOFDSET;
3163 4065
3164 EV_FREQUENT_CHECK; 4066 EV_FREQUENT_CHECK;
3165} 4067}
3166 4068
3167void noinline 4069ecb_noinline
4070void
3168ev_io_stop (EV_P_ ev_io *w) 4071ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
3169{ 4072{
3170 clear_pending (EV_A_ (W)w); 4073 clear_pending (EV_A_ (W)w);
3171 if (expect_false (!ev_is_active (w))) 4074 if (ecb_expect_false (!ev_is_active (w)))
3172 return; 4075 return;
3173 4076
3174 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));
3175 4078
4079#if EV_VERIFY >= 2
4080 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4081#endif
3176 EV_FREQUENT_CHECK; 4082 EV_FREQUENT_CHECK;
3177 4083
3178 wlist_del (&anfds[w->fd].head, (WL)w); 4084 wlist_del (&anfds[w->fd].head, (WL)w);
3179 ev_stop (EV_A_ (W)w); 4085 ev_stop (EV_A_ (W)w);
3180 4086
3181 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 4087 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3182 4088
3183 EV_FREQUENT_CHECK; 4089 EV_FREQUENT_CHECK;
3184} 4090}
3185 4091
3186void noinline 4092ecb_noinline
4093void
3187ev_timer_start (EV_P_ ev_timer *w) 4094ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
3188{ 4095{
3189 if (expect_false (ev_is_active (w))) 4096 if (ecb_expect_false (ev_is_active (w)))
3190 return; 4097 return;
3191 4098
3192 ev_at (w) += mn_now; 4099 ev_at (w) += mn_now;
3193 4100
3194 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.));
3195 4102
3196 EV_FREQUENT_CHECK; 4103 EV_FREQUENT_CHECK;
3197 4104
3198 ++timercnt; 4105 ++timercnt;
3199 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4106 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
3200 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4107 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
3201 ANHE_w (timers [ev_active (w)]) = (WT)w; 4108 ANHE_w (timers [ev_active (w)]) = (WT)w;
3202 ANHE_at_cache (timers [ev_active (w)]); 4109 ANHE_at_cache (timers [ev_active (w)]);
3203 upheap (timers, ev_active (w)); 4110 upheap (timers, ev_active (w));
3204 4111
3205 EV_FREQUENT_CHECK; 4112 EV_FREQUENT_CHECK;
3206 4113
3207 /*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));*/
3208} 4115}
3209 4116
3210void noinline 4117ecb_noinline
4118void
3211ev_timer_stop (EV_P_ ev_timer *w) 4119ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
3212{ 4120{
3213 clear_pending (EV_A_ (W)w); 4121 clear_pending (EV_A_ (W)w);
3214 if (expect_false (!ev_is_active (w))) 4122 if (ecb_expect_false (!ev_is_active (w)))
3215 return; 4123 return;
3216 4124
3217 EV_FREQUENT_CHECK; 4125 EV_FREQUENT_CHECK;
3218 4126
3219 { 4127 {
… …
3221 4129
3222 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));
3223 4131
3224 --timercnt; 4132 --timercnt;
3225 4133
3226 if (expect_true (active < timercnt + HEAP0)) 4134 if (ecb_expect_true (active < timercnt + HEAP0))
3227 { 4135 {
3228 timers [active] = timers [timercnt + HEAP0]; 4136 timers [active] = timers [timercnt + HEAP0];
3229 adjustheap (timers, timercnt, active); 4137 adjustheap (timers, timercnt, active);
3230 } 4138 }
3231 } 4139 }
… …
3235 ev_stop (EV_A_ (W)w); 4143 ev_stop (EV_A_ (W)w);
3236 4144
3237 EV_FREQUENT_CHECK; 4145 EV_FREQUENT_CHECK;
3238} 4146}
3239 4147
3240void noinline 4148ecb_noinline
4149void
3241ev_timer_again (EV_P_ ev_timer *w) 4150ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
3242{ 4151{
3243 EV_FREQUENT_CHECK; 4152 EV_FREQUENT_CHECK;
4153
4154 clear_pending (EV_A_ (W)w);
3244 4155
3245 if (ev_is_active (w)) 4156 if (ev_is_active (w))
3246 { 4157 {
3247 if (w->repeat) 4158 if (w->repeat)
3248 { 4159 {
… …
3261 4172
3262 EV_FREQUENT_CHECK; 4173 EV_FREQUENT_CHECK;
3263} 4174}
3264 4175
3265ev_tstamp 4176ev_tstamp
3266ev_timer_remaining (EV_P_ ev_timer *w) 4177ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
3267{ 4178{
3268 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4179 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3269} 4180}
3270 4181
3271#if EV_PERIODIC_ENABLE 4182#if EV_PERIODIC_ENABLE
3272void noinline 4183ecb_noinline
4184void
3273ev_periodic_start (EV_P_ ev_periodic *w) 4185ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
3274{ 4186{
3275 if (expect_false (ev_is_active (w))) 4187 if (ecb_expect_false (ev_is_active (w)))
3276 return; 4188 return;
3277 4189
3278 if (w->reschedule_cb) 4190 if (w->reschedule_cb)
3279 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4191 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
3280 else if (w->interval) 4192 else if (w->interval)
… …
3287 4199
3288 EV_FREQUENT_CHECK; 4200 EV_FREQUENT_CHECK;
3289 4201
3290 ++periodiccnt; 4202 ++periodiccnt;
3291 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4203 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
3292 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4204 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
3293 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4205 ANHE_w (periodics [ev_active (w)]) = (WT)w;
3294 ANHE_at_cache (periodics [ev_active (w)]); 4206 ANHE_at_cache (periodics [ev_active (w)]);
3295 upheap (periodics, ev_active (w)); 4207 upheap (periodics, ev_active (w));
3296 4208
3297 EV_FREQUENT_CHECK; 4209 EV_FREQUENT_CHECK;
3298 4210
3299 /*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));*/
3300} 4212}
3301 4213
3302void noinline 4214ecb_noinline
4215void
3303ev_periodic_stop (EV_P_ ev_periodic *w) 4216ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
3304{ 4217{
3305 clear_pending (EV_A_ (W)w); 4218 clear_pending (EV_A_ (W)w);
3306 if (expect_false (!ev_is_active (w))) 4219 if (ecb_expect_false (!ev_is_active (w)))
3307 return; 4220 return;
3308 4221
3309 EV_FREQUENT_CHECK; 4222 EV_FREQUENT_CHECK;
3310 4223
3311 { 4224 {
… …
3313 4226
3314 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));
3315 4228
3316 --periodiccnt; 4229 --periodiccnt;
3317 4230
3318 if (expect_true (active < periodiccnt + HEAP0)) 4231 if (ecb_expect_true (active < periodiccnt + HEAP0))
3319 { 4232 {
3320 periodics [active] = periodics [periodiccnt + HEAP0]; 4233 periodics [active] = periodics [periodiccnt + HEAP0];
3321 adjustheap (periodics, periodiccnt, active); 4234 adjustheap (periodics, periodiccnt, active);
3322 } 4235 }
3323 } 4236 }
… …
3325 ev_stop (EV_A_ (W)w); 4238 ev_stop (EV_A_ (W)w);
3326 4239
3327 EV_FREQUENT_CHECK; 4240 EV_FREQUENT_CHECK;
3328} 4241}
3329 4242
3330void noinline 4243ecb_noinline
4244void
3331ev_periodic_again (EV_P_ ev_periodic *w) 4245ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
3332{ 4246{
3333 /* TODO: use adjustheap and recalculation */ 4247 /* TODO: use adjustheap and recalculation */
3334 ev_periodic_stop (EV_A_ w); 4248 ev_periodic_stop (EV_A_ w);
3335 ev_periodic_start (EV_A_ w); 4249 ev_periodic_start (EV_A_ w);
3336} 4250}
… …
3340# define SA_RESTART 0 4254# define SA_RESTART 0
3341#endif 4255#endif
3342 4256
3343#if EV_SIGNAL_ENABLE 4257#if EV_SIGNAL_ENABLE
3344 4258
3345void noinline 4259ecb_noinline
4260void
3346ev_signal_start (EV_P_ ev_signal *w) 4261ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
3347{ 4262{
3348 if (expect_false (ev_is_active (w))) 4263 if (ecb_expect_false (ev_is_active (w)))
3349 return; 4264 return;
3350 4265
3351 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));
3352 4267
3353#if EV_MULTIPLICITY 4268#if EV_MULTIPLICITY
3354 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",
3355 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4270 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3356 4271
3357 signals [w->signum - 1].loop = EV_A; 4272 signals [w->signum - 1].loop = EV_A;
4273 ECB_MEMORY_FENCE_RELEASE;
3358#endif 4274#endif
3359 4275
3360 EV_FREQUENT_CHECK; 4276 EV_FREQUENT_CHECK;
3361 4277
3362#if EV_USE_SIGNALFD 4278#if EV_USE_SIGNALFD
… …
3421 } 4337 }
3422 4338
3423 EV_FREQUENT_CHECK; 4339 EV_FREQUENT_CHECK;
3424} 4340}
3425 4341
3426void noinline 4342ecb_noinline
4343void
3427ev_signal_stop (EV_P_ ev_signal *w) 4344ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
3428{ 4345{
3429 clear_pending (EV_A_ (W)w); 4346 clear_pending (EV_A_ (W)w);
3430 if (expect_false (!ev_is_active (w))) 4347 if (ecb_expect_false (!ev_is_active (w)))
3431 return; 4348 return;
3432 4349
3433 EV_FREQUENT_CHECK; 4350 EV_FREQUENT_CHECK;
3434 4351
3435 wlist_del (&signals [w->signum - 1].head, (WL)w); 4352 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
3463#endif 4380#endif
3464 4381
3465#if EV_CHILD_ENABLE 4382#if EV_CHILD_ENABLE
3466 4383
3467void 4384void
3468ev_child_start (EV_P_ ev_child *w) 4385ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
3469{ 4386{
3470#if EV_MULTIPLICITY 4387#if EV_MULTIPLICITY
3471 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));
3472#endif 4389#endif
3473 if (expect_false (ev_is_active (w))) 4390 if (ecb_expect_false (ev_is_active (w)))
3474 return; 4391 return;
3475 4392
3476 EV_FREQUENT_CHECK; 4393 EV_FREQUENT_CHECK;
3477 4394
3478 ev_start (EV_A_ (W)w, 1); 4395 ev_start (EV_A_ (W)w, 1);
… …
3480 4397
3481 EV_FREQUENT_CHECK; 4398 EV_FREQUENT_CHECK;
3482} 4399}
3483 4400
3484void 4401void
3485ev_child_stop (EV_P_ ev_child *w) 4402ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
3486{ 4403{
3487 clear_pending (EV_A_ (W)w); 4404 clear_pending (EV_A_ (W)w);
3488 if (expect_false (!ev_is_active (w))) 4405 if (ecb_expect_false (!ev_is_active (w)))
3489 return; 4406 return;
3490 4407
3491 EV_FREQUENT_CHECK; 4408 EV_FREQUENT_CHECK;
3492 4409
3493 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); 4410 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
… …
3507 4424
3508#define DEF_STAT_INTERVAL 5.0074891 4425#define DEF_STAT_INTERVAL 5.0074891
3509#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4426#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3510#define MIN_STAT_INTERVAL 0.1074891 4427#define MIN_STAT_INTERVAL 0.1074891
3511 4428
3512static 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);
3513 4430
3514#if EV_USE_INOTIFY 4431#if EV_USE_INOTIFY
3515 4432
3516/* 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 */
3517# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4434# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3518 4435
3519static void noinline 4436ecb_noinline
4437static void
3520infy_add (EV_P_ ev_stat *w) 4438infy_add (EV_P_ ev_stat *w)
3521{ 4439{
3522 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);
3523 4444
3524 if (w->wd >= 0) 4445 if (w->wd >= 0)
3525 { 4446 {
3526 struct statfs sfs; 4447 struct statfs sfs;
3527 4448
… …
3531 4452
3532 if (!fs_2625) 4453 if (!fs_2625)
3533 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4454 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3534 else if (!statfs (w->path, &sfs) 4455 else if (!statfs (w->path, &sfs)
3535 && (sfs.f_type == 0x1373 /* devfs */ 4456 && (sfs.f_type == 0x1373 /* devfs */
4457 || sfs.f_type == 0x4006 /* fat */
4458 || sfs.f_type == 0x4d44 /* msdos */
3536 || 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 */
3537 || sfs.f_type == 0x3153464a /* jfs */ 4463 || sfs.f_type == 0x3153464a /* jfs */
4464 || sfs.f_type == 0x9123683e /* btrfs */
3538 || sfs.f_type == 0x52654973 /* reiser3 */ 4465 || sfs.f_type == 0x52654973 /* reiser3 */
3539 || sfs.f_type == 0x01021994 /* tempfs */ 4466 || sfs.f_type == 0x01021994 /* tmpfs */
3540 || sfs.f_type == 0x58465342 /* xfs */)) 4467 || sfs.f_type == 0x58465342 /* xfs */))
3541 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4468 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3542 else 4469 else
3543 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 */
3544 } 4471 }
… …
3579 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4506 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3580 ev_timer_again (EV_A_ &w->timer); 4507 ev_timer_again (EV_A_ &w->timer);
3581 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4508 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3582} 4509}
3583 4510
3584static void noinline 4511ecb_noinline
4512static void
3585infy_del (EV_P_ ev_stat *w) 4513infy_del (EV_P_ ev_stat *w)
3586{ 4514{
3587 int slot; 4515 int slot;
3588 int wd = w->wd; 4516 int wd = w->wd;
3589 4517
… …
3596 4524
3597 /* remove this watcher, if others are watching it, they will rearm */ 4525 /* remove this watcher, if others are watching it, they will rearm */
3598 inotify_rm_watch (fs_fd, wd); 4526 inotify_rm_watch (fs_fd, wd);
3599} 4527}
3600 4528
3601static void noinline 4529ecb_noinline
4530static void
3602infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4531infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3603{ 4532{
3604 if (slot < 0) 4533 if (slot < 0)
3605 /* overflow, need to check for all hash slots */ 4534 /* overflow, need to check for all hash slots */
3606 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4535 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3642 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4571 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3643 ofs += sizeof (struct inotify_event) + ev->len; 4572 ofs += sizeof (struct inotify_event) + ev->len;
3644 } 4573 }
3645} 4574}
3646 4575
3647inline_size void ecb_cold 4576inline_size ecb_cold
4577void
3648ev_check_2625 (EV_P) 4578ev_check_2625 (EV_P)
3649{ 4579{
3650 /* kernels < 2.6.25 are borked 4580 /* kernels < 2.6.25 are borked
3651 * 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
3652 */ 4582 */
… …
3657} 4587}
3658 4588
3659inline_size int 4589inline_size int
3660infy_newfd (void) 4590infy_newfd (void)
3661{ 4591{
3662#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4592#if defined IN_CLOEXEC && defined IN_NONBLOCK
3663 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4593 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3664 if (fd >= 0) 4594 if (fd >= 0)
3665 return fd; 4595 return fd;
3666#endif 4596#endif
3667 return inotify_init (); 4597 return inotify_init ();
… …
3742#else 4672#else
3743# define EV_LSTAT(p,b) lstat (p, b) 4673# define EV_LSTAT(p,b) lstat (p, b)
3744#endif 4674#endif
3745 4675
3746void 4676void
3747ev_stat_stat (EV_P_ ev_stat *w) 4677ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3748{ 4678{
3749 if (lstat (w->path, &w->attr) < 0) 4679 if (lstat (w->path, &w->attr) < 0)
3750 w->attr.st_nlink = 0; 4680 w->attr.st_nlink = 0;
3751 else if (!w->attr.st_nlink) 4681 else if (!w->attr.st_nlink)
3752 w->attr.st_nlink = 1; 4682 w->attr.st_nlink = 1;
3753} 4683}
3754 4684
3755static void noinline 4685ecb_noinline
4686static void
3756stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4687stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3757{ 4688{
3758 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4689 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3759 4690
3760 ev_statdata prev = w->attr; 4691 ev_statdata prev = w->attr;
… …
3791 ev_feed_event (EV_A_ w, EV_STAT); 4722 ev_feed_event (EV_A_ w, EV_STAT);
3792 } 4723 }
3793} 4724}
3794 4725
3795void 4726void
3796ev_stat_start (EV_P_ ev_stat *w) 4727ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3797{ 4728{
3798 if (expect_false (ev_is_active (w))) 4729 if (ecb_expect_false (ev_is_active (w)))
3799 return; 4730 return;
3800 4731
3801 ev_stat_stat (EV_A_ w); 4732 ev_stat_stat (EV_A_ w);
3802 4733
3803 if (w->interval < MIN_STAT_INTERVAL && w->interval) 4734 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
3822 4753
3823 EV_FREQUENT_CHECK; 4754 EV_FREQUENT_CHECK;
3824} 4755}
3825 4756
3826void 4757void
3827ev_stat_stop (EV_P_ ev_stat *w) 4758ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3828{ 4759{
3829 clear_pending (EV_A_ (W)w); 4760 clear_pending (EV_A_ (W)w);
3830 if (expect_false (!ev_is_active (w))) 4761 if (ecb_expect_false (!ev_is_active (w)))
3831 return; 4762 return;
3832 4763
3833 EV_FREQUENT_CHECK; 4764 EV_FREQUENT_CHECK;
3834 4765
3835#if EV_USE_INOTIFY 4766#if EV_USE_INOTIFY
… …
3848} 4779}
3849#endif 4780#endif
3850 4781
3851#if EV_IDLE_ENABLE 4782#if EV_IDLE_ENABLE
3852void 4783void
3853ev_idle_start (EV_P_ ev_idle *w) 4784ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3854{ 4785{
3855 if (expect_false (ev_is_active (w))) 4786 if (ecb_expect_false (ev_is_active (w)))
3856 return; 4787 return;
3857 4788
3858 pri_adjust (EV_A_ (W)w); 4789 pri_adjust (EV_A_ (W)w);
3859 4790
3860 EV_FREQUENT_CHECK; 4791 EV_FREQUENT_CHECK;
… …
3863 int active = ++idlecnt [ABSPRI (w)]; 4794 int active = ++idlecnt [ABSPRI (w)];
3864 4795
3865 ++idleall; 4796 ++idleall;
3866 ev_start (EV_A_ (W)w, active); 4797 ev_start (EV_A_ (W)w, active);
3867 4798
3868 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);
3869 idles [ABSPRI (w)][active - 1] = w; 4800 idles [ABSPRI (w)][active - 1] = w;
3870 } 4801 }
3871 4802
3872 EV_FREQUENT_CHECK; 4803 EV_FREQUENT_CHECK;
3873} 4804}
3874 4805
3875void 4806void
3876ev_idle_stop (EV_P_ ev_idle *w) 4807ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3877{ 4808{
3878 clear_pending (EV_A_ (W)w); 4809 clear_pending (EV_A_ (W)w);
3879 if (expect_false (!ev_is_active (w))) 4810 if (ecb_expect_false (!ev_is_active (w)))
3880 return; 4811 return;
3881 4812
3882 EV_FREQUENT_CHECK; 4813 EV_FREQUENT_CHECK;
3883 4814
3884 { 4815 {
… …
3895} 4826}
3896#endif 4827#endif
3897 4828
3898#if EV_PREPARE_ENABLE 4829#if EV_PREPARE_ENABLE
3899void 4830void
3900ev_prepare_start (EV_P_ ev_prepare *w) 4831ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3901{ 4832{
3902 if (expect_false (ev_is_active (w))) 4833 if (ecb_expect_false (ev_is_active (w)))
3903 return; 4834 return;
3904 4835
3905 EV_FREQUENT_CHECK; 4836 EV_FREQUENT_CHECK;
3906 4837
3907 ev_start (EV_A_ (W)w, ++preparecnt); 4838 ev_start (EV_A_ (W)w, ++preparecnt);
3908 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4839 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3909 prepares [preparecnt - 1] = w; 4840 prepares [preparecnt - 1] = w;
3910 4841
3911 EV_FREQUENT_CHECK; 4842 EV_FREQUENT_CHECK;
3912} 4843}
3913 4844
3914void 4845void
3915ev_prepare_stop (EV_P_ ev_prepare *w) 4846ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3916{ 4847{
3917 clear_pending (EV_A_ (W)w); 4848 clear_pending (EV_A_ (W)w);
3918 if (expect_false (!ev_is_active (w))) 4849 if (ecb_expect_false (!ev_is_active (w)))
3919 return; 4850 return;
3920 4851
3921 EV_FREQUENT_CHECK; 4852 EV_FREQUENT_CHECK;
3922 4853
3923 { 4854 {
… …
3933} 4864}
3934#endif 4865#endif
3935 4866
3936#if EV_CHECK_ENABLE 4867#if EV_CHECK_ENABLE
3937void 4868void
3938ev_check_start (EV_P_ ev_check *w) 4869ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3939{ 4870{
3940 if (expect_false (ev_is_active (w))) 4871 if (ecb_expect_false (ev_is_active (w)))
3941 return; 4872 return;
3942 4873
3943 EV_FREQUENT_CHECK; 4874 EV_FREQUENT_CHECK;
3944 4875
3945 ev_start (EV_A_ (W)w, ++checkcnt); 4876 ev_start (EV_A_ (W)w, ++checkcnt);
3946 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4877 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
3947 checks [checkcnt - 1] = w; 4878 checks [checkcnt - 1] = w;
3948 4879
3949 EV_FREQUENT_CHECK; 4880 EV_FREQUENT_CHECK;
3950} 4881}
3951 4882
3952void 4883void
3953ev_check_stop (EV_P_ ev_check *w) 4884ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
3954{ 4885{
3955 clear_pending (EV_A_ (W)w); 4886 clear_pending (EV_A_ (W)w);
3956 if (expect_false (!ev_is_active (w))) 4887 if (ecb_expect_false (!ev_is_active (w)))
3957 return; 4888 return;
3958 4889
3959 EV_FREQUENT_CHECK; 4890 EV_FREQUENT_CHECK;
3960 4891
3961 { 4892 {
… …
3970 EV_FREQUENT_CHECK; 4901 EV_FREQUENT_CHECK;
3971} 4902}
3972#endif 4903#endif
3973 4904
3974#if EV_EMBED_ENABLE 4905#if EV_EMBED_ENABLE
3975void noinline 4906ecb_noinline
4907void
3976ev_embed_sweep (EV_P_ ev_embed *w) 4908ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3977{ 4909{
3978 ev_run (w->other, EVRUN_NOWAIT); 4910 ev_run (w->other, EVRUN_NOWAIT);
3979} 4911}
3980 4912
3981static void 4913static void
… …
4029 ev_idle_stop (EV_A_ idle); 4961 ev_idle_stop (EV_A_ idle);
4030} 4962}
4031#endif 4963#endif
4032 4964
4033void 4965void
4034ev_embed_start (EV_P_ ev_embed *w) 4966ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
4035{ 4967{
4036 if (expect_false (ev_is_active (w))) 4968 if (ecb_expect_false (ev_is_active (w)))
4037 return; 4969 return;
4038 4970
4039 { 4971 {
4040 EV_P = w->other; 4972 EV_P = w->other;
4041 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 ()));
… …
4060 4992
4061 EV_FREQUENT_CHECK; 4993 EV_FREQUENT_CHECK;
4062} 4994}
4063 4995
4064void 4996void
4065ev_embed_stop (EV_P_ ev_embed *w) 4997ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
4066{ 4998{
4067 clear_pending (EV_A_ (W)w); 4999 clear_pending (EV_A_ (W)w);
4068 if (expect_false (!ev_is_active (w))) 5000 if (ecb_expect_false (!ev_is_active (w)))
4069 return; 5001 return;
4070 5002
4071 EV_FREQUENT_CHECK; 5003 EV_FREQUENT_CHECK;
4072 5004
4073 ev_io_stop (EV_A_ &w->io); 5005 ev_io_stop (EV_A_ &w->io);
… …
4080} 5012}
4081#endif 5013#endif
4082 5014
4083#if EV_FORK_ENABLE 5015#if EV_FORK_ENABLE
4084void 5016void
4085ev_fork_start (EV_P_ ev_fork *w) 5017ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
4086{ 5018{
4087 if (expect_false (ev_is_active (w))) 5019 if (ecb_expect_false (ev_is_active (w)))
4088 return; 5020 return;
4089 5021
4090 EV_FREQUENT_CHECK; 5022 EV_FREQUENT_CHECK;
4091 5023
4092 ev_start (EV_A_ (W)w, ++forkcnt); 5024 ev_start (EV_A_ (W)w, ++forkcnt);
4093 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5025 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
4094 forks [forkcnt - 1] = w; 5026 forks [forkcnt - 1] = w;
4095 5027
4096 EV_FREQUENT_CHECK; 5028 EV_FREQUENT_CHECK;
4097} 5029}
4098 5030
4099void 5031void
4100ev_fork_stop (EV_P_ ev_fork *w) 5032ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
4101{ 5033{
4102 clear_pending (EV_A_ (W)w); 5034 clear_pending (EV_A_ (W)w);
4103 if (expect_false (!ev_is_active (w))) 5035 if (ecb_expect_false (!ev_is_active (w)))
4104 return; 5036 return;
4105 5037
4106 EV_FREQUENT_CHECK; 5038 EV_FREQUENT_CHECK;
4107 5039
4108 { 5040 {
… …
4118} 5050}
4119#endif 5051#endif
4120 5052
4121#if EV_CLEANUP_ENABLE 5053#if EV_CLEANUP_ENABLE
4122void 5054void
4123ev_cleanup_start (EV_P_ ev_cleanup *w) 5055ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4124{ 5056{
4125 if (expect_false (ev_is_active (w))) 5057 if (ecb_expect_false (ev_is_active (w)))
4126 return; 5058 return;
4127 5059
4128 EV_FREQUENT_CHECK; 5060 EV_FREQUENT_CHECK;
4129 5061
4130 ev_start (EV_A_ (W)w, ++cleanupcnt); 5062 ev_start (EV_A_ (W)w, ++cleanupcnt);
4131 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 5063 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
4132 cleanups [cleanupcnt - 1] = w; 5064 cleanups [cleanupcnt - 1] = w;
4133 5065
4134 /* cleanup watchers should never keep a refcount on the loop */ 5066 /* cleanup watchers should never keep a refcount on the loop */
4135 ev_unref (EV_A); 5067 ev_unref (EV_A);
4136 EV_FREQUENT_CHECK; 5068 EV_FREQUENT_CHECK;
4137} 5069}
4138 5070
4139void 5071void
4140ev_cleanup_stop (EV_P_ ev_cleanup *w) 5072ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4141{ 5073{
4142 clear_pending (EV_A_ (W)w); 5074 clear_pending (EV_A_ (W)w);
4143 if (expect_false (!ev_is_active (w))) 5075 if (ecb_expect_false (!ev_is_active (w)))
4144 return; 5076 return;
4145 5077
4146 EV_FREQUENT_CHECK; 5078 EV_FREQUENT_CHECK;
4147 ev_ref (EV_A); 5079 ev_ref (EV_A);
4148 5080
… …
4159} 5091}
4160#endif 5092#endif
4161 5093
4162#if EV_ASYNC_ENABLE 5094#if EV_ASYNC_ENABLE
4163void 5095void
4164ev_async_start (EV_P_ ev_async *w) 5096ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4165{ 5097{
4166 if (expect_false (ev_is_active (w))) 5098 if (ecb_expect_false (ev_is_active (w)))
4167 return; 5099 return;
4168 5100
4169 w->sent = 0; 5101 w->sent = 0;
4170 5102
4171 evpipe_init (EV_A); 5103 evpipe_init (EV_A);
4172 5104
4173 EV_FREQUENT_CHECK; 5105 EV_FREQUENT_CHECK;
4174 5106
4175 ev_start (EV_A_ (W)w, ++asynccnt); 5107 ev_start (EV_A_ (W)w, ++asynccnt);
4176 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5108 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
4177 asyncs [asynccnt - 1] = w; 5109 asyncs [asynccnt - 1] = w;
4178 5110
4179 EV_FREQUENT_CHECK; 5111 EV_FREQUENT_CHECK;
4180} 5112}
4181 5113
4182void 5114void
4183ev_async_stop (EV_P_ ev_async *w) 5115ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4184{ 5116{
4185 clear_pending (EV_A_ (W)w); 5117 clear_pending (EV_A_ (W)w);
4186 if (expect_false (!ev_is_active (w))) 5118 if (ecb_expect_false (!ev_is_active (w)))
4187 return; 5119 return;
4188 5120
4189 EV_FREQUENT_CHECK; 5121 EV_FREQUENT_CHECK;
4190 5122
4191 { 5123 {
… …
4199 5131
4200 EV_FREQUENT_CHECK; 5132 EV_FREQUENT_CHECK;
4201} 5133}
4202 5134
4203void 5135void
4204ev_async_send (EV_P_ ev_async *w) 5136ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
4205{ 5137{
4206 w->sent = 1; 5138 w->sent = 1;
4207 evpipe_write (EV_A_ &async_pending); 5139 evpipe_write (EV_A_ &async_pending);
4208} 5140}
4209#endif 5141#endif
… …
4246 5178
4247 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));
4248} 5180}
4249 5181
4250void 5182void
4251ev_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
4252{ 5184{
4253 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));
4254
4255 if (expect_false (!once))
4256 {
4257 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
4258 return;
4259 }
4260 5186
4261 once->cb = cb; 5187 once->cb = cb;
4262 once->arg = arg; 5188 once->arg = arg;
4263 5189
4264 ev_init (&once->io, once_cb_io); 5190 ev_init (&once->io, once_cb_io);
… …
4277} 5203}
4278 5204
4279/*****************************************************************************/ 5205/*****************************************************************************/
4280 5206
4281#if EV_WALK_ENABLE 5207#if EV_WALK_ENABLE
4282void ecb_cold 5208ecb_cold
5209void
4283ev_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
4284{ 5211{
4285 int i, j; 5212 int i, j;
4286 ev_watcher_list *wl, *wn; 5213 ev_watcher_list *wl, *wn;
4287 5214
4288 if (types & (EV_IO | EV_EMBED)) 5215 if (types & (EV_IO | EV_EMBED))
… …
4394 5321
4395#if EV_MULTIPLICITY 5322#if EV_MULTIPLICITY
4396 #include "ev_wrap.h" 5323 #include "ev_wrap.h"
4397#endif 5324#endif
4398 5325
4399EV_CPP(})
4400

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