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Comparing libev/ev.c (file contents):
Revision 1.393 by root, Thu Aug 4 14:47:48 2011 UTC vs.
Revision 1.510 by root, Wed Aug 28 09:45:49 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#ifndef EV_TS_CONST
550# define EV_TS_CONST(nv) nv
551# define EV_TS_TO_MSEC(a) a * 1e3 + 0.9999
552# 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) 553# 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) 554# define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
555# define EV_TV_GET(tv) ((tv).tv_sec + (tv).tv_usec * 1e-6)
556# define EV_TS_GET(ts) ((ts).tv_sec + (ts).tv_nsec * 1e-9)
557#endif
468 558
469/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ 559/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
470/* ECB.H BEGIN */ 560/* ECB.H BEGIN */
471/* 561/*
472 * libecb - http://software.schmorp.de/pkg/libecb 562 * libecb - http://software.schmorp.de/pkg/libecb
473 * 563 *
474 * Copyright (©) 2009-2011 Marc Alexander Lehmann <libecb@schmorp.de> 564 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
475 * Copyright (©) 2011 Emanuele Giaquinta 565 * Copyright (©) 2011 Emanuele Giaquinta
476 * All rights reserved. 566 * All rights reserved.
477 * 567 *
478 * Redistribution and use in source and binary forms, with or without modifica- 568 * Redistribution and use in source and binary forms, with or without modifica-
479 * tion, are permitted provided that the following conditions are met: 569 * tion, are permitted provided that the following conditions are met:
… …
493 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 583 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
494 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 584 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
495 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- 585 * 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 586 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
497 * OF THE POSSIBILITY OF SUCH DAMAGE. 587 * OF THE POSSIBILITY OF SUCH DAMAGE.
588 *
589 * Alternatively, the contents of this file may be used under the terms of
590 * the GNU General Public License ("GPL") version 2 or any later version,
591 * in which case the provisions of the GPL are applicable instead of
592 * the above. If you wish to allow the use of your version of this file
593 * only under the terms of the GPL and not to allow others to use your
594 * version of this file under the BSD license, indicate your decision
595 * by deleting the provisions above and replace them with the notice
596 * and other provisions required by the GPL. If you do not delete the
597 * provisions above, a recipient may use your version of this file under
598 * either the BSD or the GPL.
498 */ 599 */
499 600
500#ifndef ECB_H 601#ifndef ECB_H
501#define ECB_H 602#define ECB_H
603
604/* 16 bits major, 16 bits minor */
605#define ECB_VERSION 0x00010006
502 606
503#ifdef _WIN32 607#ifdef _WIN32
504 typedef signed char int8_t; 608 typedef signed char int8_t;
505 typedef unsigned char uint8_t; 609 typedef unsigned char uint8_t;
506 typedef signed short int16_t; 610 typedef signed short int16_t;
… …
512 typedef unsigned long long uint64_t; 616 typedef unsigned long long uint64_t;
513 #else /* _MSC_VER || __BORLANDC__ */ 617 #else /* _MSC_VER || __BORLANDC__ */
514 typedef signed __int64 int64_t; 618 typedef signed __int64 int64_t;
515 typedef unsigned __int64 uint64_t; 619 typedef unsigned __int64 uint64_t;
516 #endif 620 #endif
621 #ifdef _WIN64
622 #define ECB_PTRSIZE 8
623 typedef uint64_t uintptr_t;
624 typedef int64_t intptr_t;
625 #else
626 #define ECB_PTRSIZE 4
627 typedef uint32_t uintptr_t;
628 typedef int32_t intptr_t;
629 #endif
517#else 630#else
518 #include <inttypes.h> 631 #include <inttypes.h>
632 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
633 #define ECB_PTRSIZE 8
634 #else
635 #define ECB_PTRSIZE 4
636 #endif
637#endif
638
639#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
640#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
641
642/* work around x32 idiocy by defining proper macros */
643#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
644 #if _ILP32
645 #define ECB_AMD64_X32 1
646 #else
647 #define ECB_AMD64 1
648 #endif
519#endif 649#endif
520 650
521/* many compilers define _GNUC_ to some versions but then only implement 651/* many compilers define _GNUC_ to some versions but then only implement
522 * what their idiot authors think are the "more important" extensions, 652 * what their idiot authors think are the "more important" extensions,
523 * causing enormous grief in return for some better fake benchmark numbers. 653 * causing enormous grief in return for some better fake benchmark numbers.
524 * or so. 654 * or so.
525 * we try to detect these and simply assume they are not gcc - if they have 655 * 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. 656 * an issue with that they should have done it right in the first place.
527 */ 657 */
528#ifndef ECB_GCC_VERSION
529 #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__) 658#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
530 #define ECB_GCC_VERSION(major,minor) 0 659 #define ECB_GCC_VERSION(major,minor) 0
531 #else 660#else
532 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) 661 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
533 #endif 662#endif
663
664#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
665
666#if __clang__ && defined __has_builtin
667 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
668#else
669 #define ECB_CLANG_BUILTIN(x) 0
670#endif
671
672#if __clang__ && defined __has_extension
673 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
674#else
675 #define ECB_CLANG_EXTENSION(x) 0
676#endif
677
678#define ECB_CPP (__cplusplus+0)
679#define ECB_CPP11 (__cplusplus >= 201103L)
680#define ECB_CPP14 (__cplusplus >= 201402L)
681#define ECB_CPP17 (__cplusplus >= 201703L)
682
683#if ECB_CPP
684 #define ECB_C 0
685 #define ECB_STDC_VERSION 0
686#else
687 #define ECB_C 1
688 #define ECB_STDC_VERSION __STDC_VERSION__
689#endif
690
691#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
692#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
693#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
694
695#if ECB_CPP
696 #define ECB_EXTERN_C extern "C"
697 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
698 #define ECB_EXTERN_C_END }
699#else
700 #define ECB_EXTERN_C extern
701 #define ECB_EXTERN_C_BEG
702 #define ECB_EXTERN_C_END
534#endif 703#endif
535 704
536/*****************************************************************************/ 705/*****************************************************************************/
537 706
538/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ 707/* 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 */ 708/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
540 709
541#if ECB_NO_THREADS || ECB_NO_SMP 710#if ECB_NO_THREADS
711 #define ECB_NO_SMP 1
712#endif
713
714#if ECB_NO_SMP
542 #define ECB_MEMORY_FENCE do { } while (0) 715 #define ECB_MEMORY_FENCE do { } while (0)
543#endif 716#endif
544 717
718/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
719#if __xlC__ && ECB_CPP
720 #include <builtins.h>
721#endif
722
723#if 1400 <= _MSC_VER
724 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
725#endif
726
545#ifndef ECB_MEMORY_FENCE 727#ifndef ECB_MEMORY_FENCE
546 #if ECB_GCC_VERSION(2,5) 728 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
547 #if __x86 729 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
730 #if __i386 || __i386__
548 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") 731 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
549 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */ 732 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
550 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */ 733 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
551 #elif __amd64 734 #elif ECB_GCC_AMD64
552 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 735 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
553 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory") 736 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
554 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */ 737 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
555 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 738 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
556 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 739 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
740 #elif defined __ARM_ARCH_2__ \
741 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
742 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
743 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
744 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
745 || defined __ARM_ARCH_5TEJ__
746 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
557 #elif defined(__ARM_ARCH_6__ ) || defined(__ARM_ARCH_6J__ ) \ 747 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
558 || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6ZK__) 748 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
749 || defined __ARM_ARCH_6T2__
559 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,4" : : "r" (0) : "memory") 750 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
560 #elif defined(__ARM_ARCH_7__ ) || defined(__ARM_ARCH_7A__ ) \ 751 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
561 || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7R__ ) 752 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
562 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dsb" : : : "memory") 753 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
754 #elif __aarch64__
755 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
756 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
757 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
758 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
759 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
760 #elif defined __s390__ || defined __s390x__
761 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
762 #elif defined __mips__
763 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
764 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
765 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
766 #elif defined __alpha__
767 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
768 #elif defined __hppa__
769 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
770 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
771 #elif defined __ia64__
772 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
773 #elif defined __m68k__
774 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
775 #elif defined __m88k__
776 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
777 #elif defined __sh__
778 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
563 #endif 779 #endif
564 #endif 780 #endif
565#endif 781#endif
566 782
567#ifndef ECB_MEMORY_FENCE 783#ifndef ECB_MEMORY_FENCE
784 #if ECB_GCC_VERSION(4,7)
785 /* see comment below (stdatomic.h) about the C11 memory model. */
786 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
787 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
788 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
789 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
790
791 #elif ECB_CLANG_EXTENSION(c_atomic)
792 /* see comment below (stdatomic.h) about the C11 memory model. */
793 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
794 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
795 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
796 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
797
568 #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER) 798 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
569 #define ECB_MEMORY_FENCE __sync_synchronize () 799 #define ECB_MEMORY_FENCE __sync_synchronize ()
570 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */ 800 #elif _MSC_VER >= 1500 /* VC++ 2008 */
571 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */ 801 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
802 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
803 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
804 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
805 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
572 #elif _MSC_VER >= 1400 /* VC++ 2005 */ 806 #elif _MSC_VER >= 1400 /* VC++ 2005 */
573 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) 807 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
574 #define ECB_MEMORY_FENCE _ReadWriteBarrier () 808 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
575 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ 809 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
576 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () 810 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
577 #elif defined(_WIN32) 811 #elif defined _WIN32
578 #include <WinNT.h> 812 #include <WinNT.h>
579 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ 813 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
814 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
815 #include <mbarrier.h>
816 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
817 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
818 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
819 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
820 #elif __xlC__
821 #define ECB_MEMORY_FENCE __sync ()
822 #endif
823#endif
824
825#ifndef ECB_MEMORY_FENCE
826 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
827 /* we assume that these memory fences work on all variables/all memory accesses, */
828 /* not just C11 atomics and atomic accesses */
829 #include <stdatomic.h>
830 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
831 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
832 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
580 #endif 833 #endif
581#endif 834#endif
582 835
583#ifndef ECB_MEMORY_FENCE 836#ifndef ECB_MEMORY_FENCE
584 #if !ECB_AVOID_PTHREADS 837 #if !ECB_AVOID_PTHREADS
… …
596 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER; 849 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
597 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0) 850 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
598 #endif 851 #endif
599#endif 852#endif
600 853
601#if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE) 854#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
602 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 855 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
603#endif 856#endif
604 857
605#if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE) 858#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
606 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 859 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
607#endif 860#endif
608 861
862#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
863 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
864#endif
865
609/*****************************************************************************/ 866/*****************************************************************************/
610 867
611#define ECB_C99 (__STDC_VERSION__ >= 199901L) 868#if ECB_CPP
612
613#if __cplusplus
614 #define ecb_inline static inline 869 #define ecb_inline static inline
615#elif ECB_GCC_VERSION(2,5) 870#elif ECB_GCC_VERSION(2,5)
616 #define ecb_inline static __inline__ 871 #define ecb_inline static __inline__
617#elif ECB_C99 872#elif ECB_C99
618 #define ecb_inline static inline 873 #define ecb_inline static inline
… …
632 887
633#define ECB_CONCAT_(a, b) a ## b 888#define ECB_CONCAT_(a, b) a ## b
634#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) 889#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
635#define ECB_STRINGIFY_(a) # a 890#define ECB_STRINGIFY_(a) # a
636#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) 891#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
892#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
637 893
638#define ecb_function_ ecb_inline 894#define ecb_function_ ecb_inline
639 895
640#if ECB_GCC_VERSION(3,1) 896#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
641 #define ecb_attribute(attrlist) __attribute__(attrlist) 897 #define ecb_attribute(attrlist) __attribute__ (attrlist)
898#else
899 #define ecb_attribute(attrlist)
900#endif
901
902#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
642 #define ecb_is_constant(expr) __builtin_constant_p (expr) 903 #define ecb_is_constant(expr) __builtin_constant_p (expr)
904#else
905 /* possible C11 impl for integral types
906 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
907 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
908
909 #define ecb_is_constant(expr) 0
910#endif
911
912#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
643 #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) 913 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
914#else
915 #define ecb_expect(expr,value) (expr)
916#endif
917
918#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
644 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) 919 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
645#else 920#else
646 #define ecb_attribute(attrlist)
647 #define ecb_is_constant(expr) 0
648 #define ecb_expect(expr,value) (expr)
649 #define ecb_prefetch(addr,rw,locality) 921 #define ecb_prefetch(addr,rw,locality)
650#endif 922#endif
651 923
652/* no emulation for ecb_decltype */ 924/* no emulation for ecb_decltype */
653#if ECB_GCC_VERSION(4,5) 925#if ECB_CPP11
926 // older implementations might have problems with decltype(x)::type, work around it
927 template<class T> struct ecb_decltype_t { typedef T type; };
654 #define ecb_decltype(x) __decltype(x) 928 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
655#elif ECB_GCC_VERSION(3,0) 929#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
656 #define ecb_decltype(x) __typeof(x) 930 #define ecb_decltype(x) __typeof__ (x)
657#endif 931#endif
658 932
933#if _MSC_VER >= 1300
934 #define ecb_deprecated __declspec (deprecated)
935#else
936 #define ecb_deprecated ecb_attribute ((__deprecated__))
937#endif
938
939#if _MSC_VER >= 1500
940 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
941#elif ECB_GCC_VERSION(4,5)
942 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
943#else
944 #define ecb_deprecated_message(msg) ecb_deprecated
945#endif
946
947#if _MSC_VER >= 1400
948 #define ecb_noinline __declspec (noinline)
949#else
659#define ecb_noinline ecb_attribute ((__noinline__)) 950 #define ecb_noinline ecb_attribute ((__noinline__))
660#define ecb_noreturn ecb_attribute ((__noreturn__)) 951#endif
952
661#define ecb_unused ecb_attribute ((__unused__)) 953#define ecb_unused ecb_attribute ((__unused__))
662#define ecb_const ecb_attribute ((__const__)) 954#define ecb_const ecb_attribute ((__const__))
663#define ecb_pure ecb_attribute ((__pure__)) 955#define ecb_pure ecb_attribute ((__pure__))
956
957#if ECB_C11 || __IBMC_NORETURN
958 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
959 #define ecb_noreturn _Noreturn
960#elif ECB_CPP11
961 #define ecb_noreturn [[noreturn]]
962#elif _MSC_VER >= 1200
963 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
964 #define ecb_noreturn __declspec (noreturn)
965#else
966 #define ecb_noreturn ecb_attribute ((__noreturn__))
967#endif
664 968
665#if ECB_GCC_VERSION(4,3) 969#if ECB_GCC_VERSION(4,3)
666 #define ecb_artificial ecb_attribute ((__artificial__)) 970 #define ecb_artificial ecb_attribute ((__artificial__))
667 #define ecb_hot ecb_attribute ((__hot__)) 971 #define ecb_hot ecb_attribute ((__hot__))
668 #define ecb_cold ecb_attribute ((__cold__)) 972 #define ecb_cold ecb_attribute ((__cold__))
… …
680/* for compatibility to the rest of the world */ 984/* for compatibility to the rest of the world */
681#define ecb_likely(expr) ecb_expect_true (expr) 985#define ecb_likely(expr) ecb_expect_true (expr)
682#define ecb_unlikely(expr) ecb_expect_false (expr) 986#define ecb_unlikely(expr) ecb_expect_false (expr)
683 987
684/* count trailing zero bits and count # of one bits */ 988/* count trailing zero bits and count # of one bits */
685#if ECB_GCC_VERSION(3,4) 989#if ECB_GCC_VERSION(3,4) \
990 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
991 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
992 && ECB_CLANG_BUILTIN(__builtin_popcount))
686 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */ 993 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
687 #define ecb_ld32(x) (__builtin_clz (x) ^ 31) 994 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
688 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) 995 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
689 #define ecb_ctz32(x) __builtin_ctz (x) 996 #define ecb_ctz32(x) __builtin_ctz (x)
690 #define ecb_ctz64(x) __builtin_ctzll (x) 997 #define ecb_ctz64(x) __builtin_ctzll (x)
691 #define ecb_popcount32(x) __builtin_popcount (x) 998 #define ecb_popcount32(x) __builtin_popcount (x)
692 /* no popcountll */ 999 /* no popcountll */
693#else 1000#else
694 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; 1001 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
695 ecb_function_ int 1002 ecb_function_ ecb_const int
696 ecb_ctz32 (uint32_t x) 1003 ecb_ctz32 (uint32_t x)
697 { 1004 {
1005#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1006 unsigned long r;
1007 _BitScanForward (&r, x);
1008 return (int)r;
1009#else
698 int r = 0; 1010 int r = 0;
699 1011
700 x &= ~x + 1; /* this isolates the lowest bit */ 1012 x &= ~x + 1; /* this isolates the lowest bit */
701 1013
702#if ECB_branchless_on_i386 1014#if ECB_branchless_on_i386
… …
712 if (x & 0xff00ff00) r += 8; 1024 if (x & 0xff00ff00) r += 8;
713 if (x & 0xffff0000) r += 16; 1025 if (x & 0xffff0000) r += 16;
714#endif 1026#endif
715 1027
716 return r; 1028 return r;
1029#endif
717 } 1030 }
718 1031
719 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; 1032 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
720 ecb_function_ int 1033 ecb_function_ ecb_const int
721 ecb_ctz64 (uint64_t x) 1034 ecb_ctz64 (uint64_t x)
722 { 1035 {
1036#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1037 unsigned long r;
1038 _BitScanForward64 (&r, x);
1039 return (int)r;
1040#else
723 int shift = x & 0xffffffffU ? 0 : 32; 1041 int shift = x & 0xffffffff ? 0 : 32;
724 return ecb_ctz32 (x >> shift) + shift; 1042 return ecb_ctz32 (x >> shift) + shift;
1043#endif
725 } 1044 }
726 1045
727 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; 1046 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
728 ecb_function_ int 1047 ecb_function_ ecb_const int
729 ecb_popcount32 (uint32_t x) 1048 ecb_popcount32 (uint32_t x)
730 { 1049 {
731 x -= (x >> 1) & 0x55555555; 1050 x -= (x >> 1) & 0x55555555;
732 x = ((x >> 2) & 0x33333333) + (x & 0x33333333); 1051 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
733 x = ((x >> 4) + x) & 0x0f0f0f0f; 1052 x = ((x >> 4) + x) & 0x0f0f0f0f;
734 x *= 0x01010101; 1053 x *= 0x01010101;
735 1054
736 return x >> 24; 1055 return x >> 24;
737 } 1056 }
738 1057
739 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; 1058 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
740 ecb_function_ int ecb_ld32 (uint32_t x) 1059 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
741 { 1060 {
1061#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1062 unsigned long r;
1063 _BitScanReverse (&r, x);
1064 return (int)r;
1065#else
742 int r = 0; 1066 int r = 0;
743 1067
744 if (x >> 16) { x >>= 16; r += 16; } 1068 if (x >> 16) { x >>= 16; r += 16; }
745 if (x >> 8) { x >>= 8; r += 8; } 1069 if (x >> 8) { x >>= 8; r += 8; }
746 if (x >> 4) { x >>= 4; r += 4; } 1070 if (x >> 4) { x >>= 4; r += 4; }
747 if (x >> 2) { x >>= 2; r += 2; } 1071 if (x >> 2) { x >>= 2; r += 2; }
748 if (x >> 1) { r += 1; } 1072 if (x >> 1) { r += 1; }
749 1073
750 return r; 1074 return r;
1075#endif
751 } 1076 }
752 1077
753 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; 1078 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
754 ecb_function_ int ecb_ld64 (uint64_t x) 1079 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
755 { 1080 {
1081#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1082 unsigned long r;
1083 _BitScanReverse64 (&r, x);
1084 return (int)r;
1085#else
756 int r = 0; 1086 int r = 0;
757 1087
758 if (x >> 32) { x >>= 32; r += 32; } 1088 if (x >> 32) { x >>= 32; r += 32; }
759 1089
760 return r + ecb_ld32 (x); 1090 return r + ecb_ld32 (x);
1091#endif
761 } 1092 }
762#endif 1093#endif
1094
1095ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1096ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1097ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1098ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1099
1100ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1101ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1102{
1103 return ( (x * 0x0802U & 0x22110U)
1104 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1105}
1106
1107ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1108ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1109{
1110 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1111 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1112 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1113 x = ( x >> 8 ) | ( x << 8);
1114
1115 return x;
1116}
1117
1118ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1119ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1120{
1121 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1122 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1123 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1124 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1125 x = ( x >> 16 ) | ( x << 16);
1126
1127 return x;
1128}
763 1129
764/* popcount64 is only available on 64 bit cpus as gcc builtin */ 1130/* popcount64 is only available on 64 bit cpus as gcc builtin */
765/* so for this version we are lazy */ 1131/* so for this version we are lazy */
766ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 1132ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
767ecb_function_ int 1133ecb_function_ ecb_const int
768ecb_popcount64 (uint64_t x) 1134ecb_popcount64 (uint64_t x)
769{ 1135{
770 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); 1136 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
771} 1137}
772 1138
773ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const; 1139ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
774ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const; 1140ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
775ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const; 1141ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
776ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const; 1142ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
777ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const; 1143ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
778ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const; 1144ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
779ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const; 1145ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
780ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const; 1146ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
781 1147
782ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); } 1148ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
783ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); } 1149ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
784ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); } 1150ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
785ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); } 1151ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
786ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } 1152ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
787ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } 1153ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
788ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } 1154ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
789ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } 1155ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
790 1156
791#if ECB_GCC_VERSION(4,3) 1157#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1158 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1159 #define ecb_bswap16(x) __builtin_bswap16 (x)
1160 #else
792 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 1161 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1162 #endif
793 #define ecb_bswap32(x) __builtin_bswap32 (x) 1163 #define ecb_bswap32(x) __builtin_bswap32 (x)
794 #define ecb_bswap64(x) __builtin_bswap64 (x) 1164 #define ecb_bswap64(x) __builtin_bswap64 (x)
1165#elif _MSC_VER
1166 #include <stdlib.h>
1167 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1168 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1169 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
795#else 1170#else
796 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; 1171 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
797 ecb_function_ uint16_t 1172 ecb_function_ ecb_const uint16_t
798 ecb_bswap16 (uint16_t x) 1173 ecb_bswap16 (uint16_t x)
799 { 1174 {
800 return ecb_rotl16 (x, 8); 1175 return ecb_rotl16 (x, 8);
801 } 1176 }
802 1177
803 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; 1178 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
804 ecb_function_ uint32_t 1179 ecb_function_ ecb_const uint32_t
805 ecb_bswap32 (uint32_t x) 1180 ecb_bswap32 (uint32_t x)
806 { 1181 {
807 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); 1182 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
808 } 1183 }
809 1184
810 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; 1185 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
811 ecb_function_ uint64_t 1186 ecb_function_ ecb_const uint64_t
812 ecb_bswap64 (uint64_t x) 1187 ecb_bswap64 (uint64_t x)
813 { 1188 {
814 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); 1189 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
815 } 1190 }
816#endif 1191#endif
817 1192
818#if ECB_GCC_VERSION(4,5) 1193#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
819 #define ecb_unreachable() __builtin_unreachable () 1194 #define ecb_unreachable() __builtin_unreachable ()
820#else 1195#else
821 /* this seems to work fine, but gcc always emits a warning for it :/ */ 1196 /* this seems to work fine, but gcc always emits a warning for it :/ */
822 ecb_function_ void ecb_unreachable (void) ecb_noreturn; 1197 ecb_inline ecb_noreturn void ecb_unreachable (void);
823 ecb_function_ void ecb_unreachable (void) { } 1198 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
824#endif 1199#endif
825 1200
826/* try to tell the compiler that some condition is definitely true */ 1201/* try to tell the compiler that some condition is definitely true */
827#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) 1202#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
828 1203
829ecb_function_ unsigned char ecb_byteorder_helper (void) ecb_const; 1204ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
830ecb_function_ unsigned char 1205ecb_inline ecb_const uint32_t
831ecb_byteorder_helper (void) 1206ecb_byteorder_helper (void)
832{ 1207{
833 const uint32_t u = 0x11223344; 1208 /* the union code still generates code under pressure in gcc, */
834 return *(unsigned char *)&u; 1209 /* but less than using pointers, and always seems to */
1210 /* successfully return a constant. */
1211 /* the reason why we have this horrible preprocessor mess */
1212 /* is to avoid it in all cases, at least on common architectures */
1213 /* or when using a recent enough gcc version (>= 4.6) */
1214#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1215 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1216 #define ECB_LITTLE_ENDIAN 1
1217 return 0x44332211;
1218#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1219 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1220 #define ECB_BIG_ENDIAN 1
1221 return 0x11223344;
1222#else
1223 union
1224 {
1225 uint8_t c[4];
1226 uint32_t u;
1227 } u = { 0x11, 0x22, 0x33, 0x44 };
1228 return u.u;
1229#endif
835} 1230}
836 1231
837ecb_function_ ecb_bool ecb_big_endian (void) ecb_const; 1232ecb_inline ecb_const ecb_bool ecb_big_endian (void);
838ecb_function_ ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } 1233ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
839ecb_function_ ecb_bool ecb_little_endian (void) ecb_const; 1234ecb_inline ecb_const ecb_bool ecb_little_endian (void);
840ecb_function_ ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } 1235ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
841 1236
842#if ECB_GCC_VERSION(3,0) || ECB_C99 1237#if ECB_GCC_VERSION(3,0) || ECB_C99
843 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) 1238 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
844#else 1239#else
845 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) 1240 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1241#endif
1242
1243#if ECB_CPP
1244 template<typename T>
1245 static inline T ecb_div_rd (T val, T div)
1246 {
1247 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1248 }
1249 template<typename T>
1250 static inline T ecb_div_ru (T val, T div)
1251 {
1252 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1253 }
1254#else
1255 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1256 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
846#endif 1257#endif
847 1258
848#if ecb_cplusplus_does_not_suck 1259#if ecb_cplusplus_does_not_suck
849 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */ 1260 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
850 template<typename T, int N> 1261 template<typename T, int N>
… …
854 } 1265 }
855#else 1266#else
856 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1267 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
857#endif 1268#endif
858 1269
1270ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1271ecb_function_ ecb_const uint32_t
1272ecb_binary16_to_binary32 (uint32_t x)
1273{
1274 unsigned int s = (x & 0x8000) << (31 - 15);
1275 int e = (x >> 10) & 0x001f;
1276 unsigned int m = x & 0x03ff;
1277
1278 if (ecb_expect_false (e == 31))
1279 /* infinity or NaN */
1280 e = 255 - (127 - 15);
1281 else if (ecb_expect_false (!e))
1282 {
1283 if (ecb_expect_true (!m))
1284 /* zero, handled by code below by forcing e to 0 */
1285 e = 0 - (127 - 15);
1286 else
1287 {
1288 /* subnormal, renormalise */
1289 unsigned int s = 10 - ecb_ld32 (m);
1290
1291 m = (m << s) & 0x3ff; /* mask implicit bit */
1292 e -= s - 1;
1293 }
1294 }
1295
1296 /* e and m now are normalised, or zero, (or inf or nan) */
1297 e += 127 - 15;
1298
1299 return s | (e << 23) | (m << (23 - 10));
1300}
1301
1302ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1303ecb_function_ ecb_const uint16_t
1304ecb_binary32_to_binary16 (uint32_t x)
1305{
1306 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1307 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1308 unsigned int m = x & 0x007fffff;
1309
1310 x &= 0x7fffffff;
1311
1312 /* if it's within range of binary16 normals, use fast path */
1313 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1314 {
1315 /* mantissa round-to-even */
1316 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1317
1318 /* handle overflow */
1319 if (ecb_expect_false (m >= 0x00800000))
1320 {
1321 m >>= 1;
1322 e += 1;
1323 }
1324
1325 return s | (e << 10) | (m >> (23 - 10));
1326 }
1327
1328 /* handle large numbers and infinity */
1329 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1330 return s | 0x7c00;
1331
1332 /* handle zero, subnormals and small numbers */
1333 if (ecb_expect_true (x < 0x38800000))
1334 {
1335 /* zero */
1336 if (ecb_expect_true (!x))
1337 return s;
1338
1339 /* handle subnormals */
1340
1341 /* too small, will be zero */
1342 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1343 return s;
1344
1345 m |= 0x00800000; /* make implicit bit explicit */
1346
1347 /* very tricky - we need to round to the nearest e (+10) bit value */
1348 {
1349 unsigned int bits = 14 - e;
1350 unsigned int half = (1 << (bits - 1)) - 1;
1351 unsigned int even = (m >> bits) & 1;
1352
1353 /* if this overflows, we will end up with a normalised number */
1354 m = (m + half + even) >> bits;
1355 }
1356
1357 return s | m;
1358 }
1359
1360 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1361 m >>= 13;
1362
1363 return s | 0x7c00 | m | !m;
1364}
1365
1366/*******************************************************************************/
1367/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1368
1369/* basically, everything uses "ieee pure-endian" floating point numbers */
1370/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1371#if 0 \
1372 || __i386 || __i386__ \
1373 || ECB_GCC_AMD64 \
1374 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1375 || defined __s390__ || defined __s390x__ \
1376 || defined __mips__ \
1377 || defined __alpha__ \
1378 || defined __hppa__ \
1379 || defined __ia64__ \
1380 || defined __m68k__ \
1381 || defined __m88k__ \
1382 || defined __sh__ \
1383 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1384 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1385 || defined __aarch64__
1386 #define ECB_STDFP 1
1387 #include <string.h> /* for memcpy */
1388#else
1389 #define ECB_STDFP 0
1390#endif
1391
1392#ifndef ECB_NO_LIBM
1393
1394 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1395
1396 /* only the oldest of old doesn't have this one. solaris. */
1397 #ifdef INFINITY
1398 #define ECB_INFINITY INFINITY
1399 #else
1400 #define ECB_INFINITY HUGE_VAL
1401 #endif
1402
1403 #ifdef NAN
1404 #define ECB_NAN NAN
1405 #else
1406 #define ECB_NAN ECB_INFINITY
1407 #endif
1408
1409 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1410 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1411 #define ecb_frexpf(x,e) frexpf ((x), (e))
1412 #else
1413 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1414 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1415 #endif
1416
1417 /* convert a float to ieee single/binary32 */
1418 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1419 ecb_function_ ecb_const uint32_t
1420 ecb_float_to_binary32 (float x)
1421 {
1422 uint32_t r;
1423
1424 #if ECB_STDFP
1425 memcpy (&r, &x, 4);
1426 #else
1427 /* slow emulation, works for anything but -0 */
1428 uint32_t m;
1429 int e;
1430
1431 if (x == 0e0f ) return 0x00000000U;
1432 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1433 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1434 if (x != x ) return 0x7fbfffffU;
1435
1436 m = ecb_frexpf (x, &e) * 0x1000000U;
1437
1438 r = m & 0x80000000U;
1439
1440 if (r)
1441 m = -m;
1442
1443 if (e <= -126)
1444 {
1445 m &= 0xffffffU;
1446 m >>= (-125 - e);
1447 e = -126;
1448 }
1449
1450 r |= (e + 126) << 23;
1451 r |= m & 0x7fffffU;
1452 #endif
1453
1454 return r;
1455 }
1456
1457 /* converts an ieee single/binary32 to a float */
1458 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1459 ecb_function_ ecb_const float
1460 ecb_binary32_to_float (uint32_t x)
1461 {
1462 float r;
1463
1464 #if ECB_STDFP
1465 memcpy (&r, &x, 4);
1466 #else
1467 /* emulation, only works for normals and subnormals and +0 */
1468 int neg = x >> 31;
1469 int e = (x >> 23) & 0xffU;
1470
1471 x &= 0x7fffffU;
1472
1473 if (e)
1474 x |= 0x800000U;
1475 else
1476 e = 1;
1477
1478 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1479 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1480
1481 r = neg ? -r : r;
1482 #endif
1483
1484 return r;
1485 }
1486
1487 /* convert a double to ieee double/binary64 */
1488 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1489 ecb_function_ ecb_const uint64_t
1490 ecb_double_to_binary64 (double x)
1491 {
1492 uint64_t r;
1493
1494 #if ECB_STDFP
1495 memcpy (&r, &x, 8);
1496 #else
1497 /* slow emulation, works for anything but -0 */
1498 uint64_t m;
1499 int e;
1500
1501 if (x == 0e0 ) return 0x0000000000000000U;
1502 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1503 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1504 if (x != x ) return 0X7ff7ffffffffffffU;
1505
1506 m = frexp (x, &e) * 0x20000000000000U;
1507
1508 r = m & 0x8000000000000000;;
1509
1510 if (r)
1511 m = -m;
1512
1513 if (e <= -1022)
1514 {
1515 m &= 0x1fffffffffffffU;
1516 m >>= (-1021 - e);
1517 e = -1022;
1518 }
1519
1520 r |= ((uint64_t)(e + 1022)) << 52;
1521 r |= m & 0xfffffffffffffU;
1522 #endif
1523
1524 return r;
1525 }
1526
1527 /* converts an ieee double/binary64 to a double */
1528 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1529 ecb_function_ ecb_const double
1530 ecb_binary64_to_double (uint64_t x)
1531 {
1532 double r;
1533
1534 #if ECB_STDFP
1535 memcpy (&r, &x, 8);
1536 #else
1537 /* emulation, only works for normals and subnormals and +0 */
1538 int neg = x >> 63;
1539 int e = (x >> 52) & 0x7ffU;
1540
1541 x &= 0xfffffffffffffU;
1542
1543 if (e)
1544 x |= 0x10000000000000U;
1545 else
1546 e = 1;
1547
1548 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1549 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1550
1551 r = neg ? -r : r;
1552 #endif
1553
1554 return r;
1555 }
1556
1557 /* convert a float to ieee half/binary16 */
1558 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1559 ecb_function_ ecb_const uint16_t
1560 ecb_float_to_binary16 (float x)
1561 {
1562 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1563 }
1564
1565 /* convert an ieee half/binary16 to float */
1566 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1567 ecb_function_ ecb_const float
1568 ecb_binary16_to_float (uint16_t x)
1569 {
1570 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1571 }
1572
1573#endif
1574
859#endif 1575#endif
860 1576
861/* ECB.H END */ 1577/* ECB.H END */
862 1578
863#if ECB_MEMORY_FENCE_NEEDS_PTHREADS 1579#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1580/* if your architecture doesn't need memory fences, e.g. because it is
1581 * single-cpu/core, or if you use libev in a project that doesn't use libev
1582 * from multiple threads, then you can define ECB_NO_THREADS when compiling
1583 * libev, in which cases the memory fences become nops.
1584 * alternatively, you can remove this #error and link against libpthread,
1585 * which will then provide the memory fences.
1586 */
1587# error "memory fences not defined for your architecture, please report"
1588#endif
1589
864# undef ECB_MEMORY_FENCE 1590#ifndef ECB_MEMORY_FENCE
865# undef ECB_MEMORY_FENCE_ACQUIRE 1591# define ECB_MEMORY_FENCE do { } while (0)
866# undef ECB_MEMORY_FENCE_RELEASE 1592# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1593# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
867#endif 1594#endif
868
869#define expect_false(cond) ecb_expect_false (cond)
870#define expect_true(cond) ecb_expect_true (cond)
871#define noinline ecb_noinline
872 1595
873#define inline_size ecb_inline 1596#define inline_size ecb_inline
874 1597
875#if EV_FEATURE_CODE 1598#if EV_FEATURE_CODE
876# define inline_speed ecb_inline 1599# define inline_speed ecb_inline
877#else 1600#else
878# define inline_speed static noinline 1601# define inline_speed ecb_noinline static
879#endif 1602#endif
1603
1604/*****************************************************************************/
1605/* raw syscall wrappers */
1606
1607#if EV_NEED_SYSCALL
1608
1609#include <sys/syscall.h>
1610
1611/*
1612 * define some syscall wrappers for common architectures
1613 * this is mostly for nice looks during debugging, not performance.
1614 * our syscalls return < 0, not == -1, on error. which is good
1615 * enough for linux aio.
1616 * TODO: arm is also common nowadays, maybe even mips and x86
1617 * TODO: after implementing this, it suddenly looks like overkill, but its hard to remove...
1618 */
1619#if __GNUC__ && __linux && ECB_AMD64 && !defined __OPTIMIZE_SIZE__
1620 /* the costly errno access probably kills this for size optimisation */
1621
1622 #define ev_syscall(nr,narg,arg1,arg2,arg3,arg4,arg5,arg6) \
1623 ({ \
1624 long res; \
1625 register unsigned long r6 __asm__ ("r9" ); \
1626 register unsigned long r5 __asm__ ("r8" ); \
1627 register unsigned long r4 __asm__ ("r10"); \
1628 register unsigned long r3 __asm__ ("rdx"); \
1629 register unsigned long r2 __asm__ ("rsi"); \
1630 register unsigned long r1 __asm__ ("rdi"); \
1631 if (narg >= 6) r6 = (unsigned long)(arg6); \
1632 if (narg >= 5) r5 = (unsigned long)(arg5); \
1633 if (narg >= 4) r4 = (unsigned long)(arg4); \
1634 if (narg >= 3) r3 = (unsigned long)(arg3); \
1635 if (narg >= 2) r2 = (unsigned long)(arg2); \
1636 if (narg >= 1) r1 = (unsigned long)(arg1); \
1637 __asm__ __volatile__ ( \
1638 "syscall\n\t" \
1639 : "=a" (res) \
1640 : "0" (nr), "r" (r1), "r" (r2), "r" (r3), "r" (r4), "r" (r5) \
1641 : "cc", "r11", "cx", "memory"); \
1642 errno = -res; \
1643 res; \
1644 })
1645
1646#endif
1647
1648#ifdef ev_syscall
1649 #define ev_syscall0(nr) ev_syscall (nr, 0, 0, 0, 0, 0, 0, 0)
1650 #define ev_syscall1(nr,arg1) ev_syscall (nr, 1, arg1, 0, 0, 0, 0, 0)
1651 #define ev_syscall2(nr,arg1,arg2) ev_syscall (nr, 2, arg1, arg2, 0, 0, 0, 0)
1652 #define ev_syscall3(nr,arg1,arg2,arg3) ev_syscall (nr, 3, arg1, arg2, arg3, 0, 0, 0)
1653 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) ev_syscall (nr, 3, arg1, arg2, arg3, arg4, 0, 0)
1654 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) ev_syscall (nr, 5, arg1, arg2, arg3, arg4, arg5, 0)
1655 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) ev_syscall (nr, 6, arg1, arg2, arg3, arg4, arg5,arg6)
1656#else
1657 #define ev_syscall0(nr) syscall (nr)
1658 #define ev_syscall1(nr,arg1) syscall (nr, arg1)
1659 #define ev_syscall2(nr,arg1,arg2) syscall (nr, arg1, arg2)
1660 #define ev_syscall3(nr,arg1,arg2,arg3) syscall (nr, arg1, arg2, arg3)
1661 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) syscall (nr, arg1, arg2, arg3, arg4)
1662 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) syscall (nr, arg1, arg2, arg3, arg4, arg5)
1663 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) syscall (nr, arg1, arg2, arg3, arg4, arg5,arg6)
1664#endif
1665
1666#endif
1667
1668/*****************************************************************************/
880 1669
881#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1670#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
882 1671
883#if EV_MINPRI == EV_MAXPRI 1672#if EV_MINPRI == EV_MAXPRI
884# define ABSPRI(w) (((W)w), 0) 1673# define ABSPRI(w) (((W)w), 0)
885#else 1674#else
886# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1675# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
887#endif 1676#endif
888 1677
889#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1678#define EMPTY /* required for microsofts broken pseudo-c compiler */
890#define EMPTY2(a,b) /* used to suppress some warnings */
891 1679
892typedef ev_watcher *W; 1680typedef ev_watcher *W;
893typedef ev_watcher_list *WL; 1681typedef ev_watcher_list *WL;
894typedef ev_watcher_time *WT; 1682typedef ev_watcher_time *WT;
895 1683
… …
920# include "ev_win32.c" 1708# include "ev_win32.c"
921#endif 1709#endif
922 1710
923/*****************************************************************************/ 1711/*****************************************************************************/
924 1712
1713#if EV_USE_LINUXAIO
1714# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1715#endif
1716
925/* define a suitable floor function (only used by periodics atm) */ 1717/* define a suitable floor function (only used by periodics atm) */
926 1718
927#if EV_USE_FLOOR 1719#if EV_USE_FLOOR
928# include <math.h> 1720# include <math.h>
929# define ev_floor(v) floor (v) 1721# define ev_floor(v) floor (v)
930#else 1722#else
931 1723
932#include <float.h> 1724#include <float.h>
933 1725
934/* a floor() replacement function, should be independent of ev_tstamp type */ 1726/* a floor() replacement function, should be independent of ev_tstamp type */
1727ecb_noinline
935static ev_tstamp noinline 1728static ev_tstamp
936ev_floor (ev_tstamp v) 1729ev_floor (ev_tstamp v)
937{ 1730{
938 /* the choice of shift factor is not terribly important */ 1731 /* the choice of shift factor is not terribly important */
939#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1732#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
940 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1733 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
941#else 1734#else
942 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; 1735 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
943#endif 1736#endif
944 1737
1738 /* special treatment for negative arguments */
1739 if (ecb_expect_false (v < 0.))
1740 {
1741 ev_tstamp f = -ev_floor (-v);
1742
1743 return f - (f == v ? 0 : 1);
1744 }
1745
945 /* argument too large for an unsigned long? */ 1746 /* argument too large for an unsigned long? then reduce it */
946 if (expect_false (v >= shift)) 1747 if (ecb_expect_false (v >= shift))
947 { 1748 {
948 ev_tstamp f; 1749 ev_tstamp f;
949 1750
950 if (v == v - 1.) 1751 if (v == v - 1.)
951 return v; /* very large number */ 1752 return v; /* very large numbers are assumed to be integer */
952 1753
953 f = shift * ev_floor (v * (1. / shift)); 1754 f = shift * ev_floor (v * (1. / shift));
954 return f + ev_floor (v - f); 1755 return f + ev_floor (v - f);
955 } 1756 }
956 1757
957 /* special treatment for negative args? */
958 if (expect_false (v < 0.))
959 {
960 ev_tstamp f = -ev_floor (-v);
961
962 return f - (f == v ? 0 : 1);
963 }
964
965 /* fits into an unsigned long */ 1758 /* fits into an unsigned long */
966 return (unsigned long)v; 1759 return (unsigned long)v;
967} 1760}
968 1761
969#endif 1762#endif
… …
972 1765
973#ifdef __linux 1766#ifdef __linux
974# include <sys/utsname.h> 1767# include <sys/utsname.h>
975#endif 1768#endif
976 1769
977static unsigned int noinline ecb_cold 1770ecb_noinline ecb_cold
1771static unsigned int
978ev_linux_version (void) 1772ev_linux_version (void)
979{ 1773{
980#ifdef __linux 1774#ifdef __linux
981 unsigned int v = 0; 1775 unsigned int v = 0;
982 struct utsname buf; 1776 struct utsname buf;
… …
1011} 1805}
1012 1806
1013/*****************************************************************************/ 1807/*****************************************************************************/
1014 1808
1015#if EV_AVOID_STDIO 1809#if EV_AVOID_STDIO
1016static void noinline ecb_cold 1810ecb_noinline ecb_cold
1811static void
1017ev_printerr (const char *msg) 1812ev_printerr (const char *msg)
1018{ 1813{
1019 write (STDERR_FILENO, msg, strlen (msg)); 1814 write (STDERR_FILENO, msg, strlen (msg));
1020} 1815}
1021#endif 1816#endif
1022 1817
1023static void (*syserr_cb)(const char *msg); 1818static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
1024 1819
1025void ecb_cold 1820ecb_cold
1821void
1026ev_set_syserr_cb (void (*cb)(const char *msg)) 1822ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
1027{ 1823{
1028 syserr_cb = cb; 1824 syserr_cb = cb;
1029} 1825}
1030 1826
1031static void noinline ecb_cold 1827ecb_noinline ecb_cold
1828static void
1032ev_syserr (const char *msg) 1829ev_syserr (const char *msg)
1033{ 1830{
1034 if (!msg) 1831 if (!msg)
1035 msg = "(libev) system error"; 1832 msg = "(libev) system error";
1036 1833
… …
1049 abort (); 1846 abort ();
1050 } 1847 }
1051} 1848}
1052 1849
1053static void * 1850static void *
1054ev_realloc_emul (void *ptr, long size) 1851ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
1055{ 1852{
1056#if __GLIBC__
1057 return realloc (ptr, size);
1058#else
1059 /* some systems, notably openbsd and darwin, fail to properly 1853 /* some systems, notably openbsd and darwin, fail to properly
1060 * implement realloc (x, 0) (as required by both ansi c-89 and 1854 * implement realloc (x, 0) (as required by both ansi c-89 and
1061 * the single unix specification, so work around them here. 1855 * the single unix specification, so work around them here.
1856 * recently, also (at least) fedora and debian started breaking it,
1857 * despite documenting it otherwise.
1062 */ 1858 */
1063 1859
1064 if (size) 1860 if (size)
1065 return realloc (ptr, size); 1861 return realloc (ptr, size);
1066 1862
1067 free (ptr); 1863 free (ptr);
1068 return 0; 1864 return 0;
1069#endif
1070} 1865}
1071 1866
1072static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1867static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
1073 1868
1074void ecb_cold 1869ecb_cold
1870void
1075ev_set_allocator (void *(*cb)(void *ptr, long size)) 1871ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
1076{ 1872{
1077 alloc = cb; 1873 alloc = cb;
1078} 1874}
1079 1875
1080inline_speed void * 1876inline_speed void *
… …
1107typedef struct 1903typedef struct
1108{ 1904{
1109 WL head; 1905 WL head;
1110 unsigned char events; /* the events watched for */ 1906 unsigned char events; /* the events watched for */
1111 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 1907 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
1112 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1908 unsigned char emask; /* some backends store the actual kernel mask in here */
1113 unsigned char unused; 1909 unsigned char eflags; /* flags field for use by backends */
1114#if EV_USE_EPOLL 1910#if EV_USE_EPOLL
1115 unsigned int egen; /* generation counter to counter epoll bugs */ 1911 unsigned int egen; /* generation counter to counter epoll bugs */
1116#endif 1912#endif
1117#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 1913#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1118 SOCKET handle; 1914 SOCKET handle;
… …
1168 #undef VAR 1964 #undef VAR
1169 }; 1965 };
1170 #include "ev_wrap.h" 1966 #include "ev_wrap.h"
1171 1967
1172 static struct ev_loop default_loop_struct; 1968 static struct ev_loop default_loop_struct;
1173 struct ev_loop *ev_default_loop_ptr; 1969 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
1174 1970
1175#else 1971#else
1176 1972
1177 ev_tstamp ev_rt_now; 1973 EV_API_DECL ev_tstamp ev_rt_now = EV_TS_CONST (0.); /* needs to be initialised to make it a definition despite extern */
1178 #define VAR(name,decl) static decl; 1974 #define VAR(name,decl) static decl;
1179 #include "ev_vars.h" 1975 #include "ev_vars.h"
1180 #undef VAR 1976 #undef VAR
1181 1977
1182 static int ev_default_loop_ptr; 1978 static int ev_default_loop_ptr;
1183 1979
1184#endif 1980#endif
1185 1981
1186#if EV_FEATURE_API 1982#if EV_FEATURE_API
1187# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1983# define EV_RELEASE_CB if (ecb_expect_false (release_cb)) release_cb (EV_A)
1188# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 1984# define EV_ACQUIRE_CB if (ecb_expect_false (acquire_cb)) acquire_cb (EV_A)
1189# define EV_INVOKE_PENDING invoke_cb (EV_A) 1985# define EV_INVOKE_PENDING invoke_cb (EV_A)
1190#else 1986#else
1191# define EV_RELEASE_CB (void)0 1987# define EV_RELEASE_CB (void)0
1192# define EV_ACQUIRE_CB (void)0 1988# define EV_ACQUIRE_CB (void)0
1193# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1989# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
… …
1197 1993
1198/*****************************************************************************/ 1994/*****************************************************************************/
1199 1995
1200#ifndef EV_HAVE_EV_TIME 1996#ifndef EV_HAVE_EV_TIME
1201ev_tstamp 1997ev_tstamp
1202ev_time (void) 1998ev_time (void) EV_NOEXCEPT
1203{ 1999{
1204#if EV_USE_REALTIME 2000#if EV_USE_REALTIME
1205 if (expect_true (have_realtime)) 2001 if (ecb_expect_true (have_realtime))
1206 { 2002 {
1207 struct timespec ts; 2003 struct timespec ts;
1208 clock_gettime (CLOCK_REALTIME, &ts); 2004 clock_gettime (CLOCK_REALTIME, &ts);
1209 return ts.tv_sec + ts.tv_nsec * 1e-9; 2005 return EV_TS_GET (ts);
1210 } 2006 }
1211#endif 2007#endif
1212 2008
2009 {
1213 struct timeval tv; 2010 struct timeval tv;
1214 gettimeofday (&tv, 0); 2011 gettimeofday (&tv, 0);
1215 return tv.tv_sec + tv.tv_usec * 1e-6; 2012 return EV_TV_GET (tv);
2013 }
1216} 2014}
1217#endif 2015#endif
1218 2016
1219inline_size ev_tstamp 2017inline_size ev_tstamp
1220get_clock (void) 2018get_clock (void)
1221{ 2019{
1222#if EV_USE_MONOTONIC 2020#if EV_USE_MONOTONIC
1223 if (expect_true (have_monotonic)) 2021 if (ecb_expect_true (have_monotonic))
1224 { 2022 {
1225 struct timespec ts; 2023 struct timespec ts;
1226 clock_gettime (CLOCK_MONOTONIC, &ts); 2024 clock_gettime (CLOCK_MONOTONIC, &ts);
1227 return ts.tv_sec + ts.tv_nsec * 1e-9; 2025 return EV_TS_GET (ts);
1228 } 2026 }
1229#endif 2027#endif
1230 2028
1231 return ev_time (); 2029 return ev_time ();
1232} 2030}
1233 2031
1234#if EV_MULTIPLICITY 2032#if EV_MULTIPLICITY
1235ev_tstamp 2033ev_tstamp
1236ev_now (EV_P) 2034ev_now (EV_P) EV_NOEXCEPT
1237{ 2035{
1238 return ev_rt_now; 2036 return ev_rt_now;
1239} 2037}
1240#endif 2038#endif
1241 2039
1242void 2040void
1243ev_sleep (ev_tstamp delay) 2041ev_sleep (ev_tstamp delay) EV_NOEXCEPT
1244{ 2042{
1245 if (delay > 0.) 2043 if (delay > EV_TS_CONST (0.))
1246 { 2044 {
1247#if EV_USE_NANOSLEEP 2045#if EV_USE_NANOSLEEP
1248 struct timespec ts; 2046 struct timespec ts;
1249 2047
1250 EV_TS_SET (ts, delay); 2048 EV_TS_SET (ts, delay);
1251 nanosleep (&ts, 0); 2049 nanosleep (&ts, 0);
1252#elif defined(_WIN32) 2050#elif defined _WIN32
2051 /* maybe this should round up, as ms is very low resolution */
2052 /* compared to select (µs) or nanosleep (ns) */
1253 Sleep ((unsigned long)(delay * 1e3)); 2053 Sleep ((unsigned long)(EV_TS_TO_MSEC (delay)));
1254#else 2054#else
1255 struct timeval tv; 2055 struct timeval tv;
1256 2056
1257 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 2057 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
1258 /* something not guaranteed by newer posix versions, but guaranteed */ 2058 /* something not guaranteed by newer posix versions, but guaranteed */
… …
1276 2076
1277 do 2077 do
1278 ncur <<= 1; 2078 ncur <<= 1;
1279 while (cnt > ncur); 2079 while (cnt > ncur);
1280 2080
1281 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 2081 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
1282 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 2082 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
1283 { 2083 {
1284 ncur *= elem; 2084 ncur *= elem;
1285 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 2085 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
1286 ncur = ncur - sizeof (void *) * 4; 2086 ncur = ncur - sizeof (void *) * 4;
… …
1288 } 2088 }
1289 2089
1290 return ncur; 2090 return ncur;
1291} 2091}
1292 2092
1293static void * noinline ecb_cold 2093ecb_noinline ecb_cold
2094static void *
1294array_realloc (int elem, void *base, int *cur, int cnt) 2095array_realloc (int elem, void *base, int *cur, int cnt)
1295{ 2096{
1296 *cur = array_nextsize (elem, *cur, cnt); 2097 *cur = array_nextsize (elem, *cur, cnt);
1297 return ev_realloc (base, elem * *cur); 2098 return ev_realloc (base, elem * *cur);
1298} 2099}
1299 2100
2101#define array_needsize_noinit(base,offset,count)
2102
1300#define array_init_zero(base,count) \ 2103#define array_needsize_zerofill(base,offset,count) \
1301 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2104 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
1302 2105
1303#define array_needsize(type,base,cur,cnt,init) \ 2106#define array_needsize(type,base,cur,cnt,init) \
1304 if (expect_false ((cnt) > (cur))) \ 2107 if (ecb_expect_false ((cnt) > (cur))) \
1305 { \ 2108 { \
1306 int ecb_unused ocur_ = (cur); \ 2109 ecb_unused int ocur_ = (cur); \
1307 (base) = (type *)array_realloc \ 2110 (base) = (type *)array_realloc \
1308 (sizeof (type), (base), &(cur), (cnt)); \ 2111 (sizeof (type), (base), &(cur), (cnt)); \
1309 init ((base) + (ocur_), (cur) - ocur_); \ 2112 init ((base), ocur_, ((cur) - ocur_)); \
1310 } 2113 }
1311 2114
1312#if 0 2115#if 0
1313#define array_slim(type,stem) \ 2116#define array_slim(type,stem) \
1314 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2117 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
1323 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2126 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
1324 2127
1325/*****************************************************************************/ 2128/*****************************************************************************/
1326 2129
1327/* dummy callback for pending events */ 2130/* dummy callback for pending events */
1328static void noinline 2131ecb_noinline
2132static void
1329pendingcb (EV_P_ ev_prepare *w, int revents) 2133pendingcb (EV_P_ ev_prepare *w, int revents)
1330{ 2134{
1331} 2135}
1332 2136
1333void noinline 2137ecb_noinline
2138void
1334ev_feed_event (EV_P_ void *w, int revents) 2139ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
1335{ 2140{
1336 W w_ = (W)w; 2141 W w_ = (W)w;
1337 int pri = ABSPRI (w_); 2142 int pri = ABSPRI (w_);
1338 2143
1339 if (expect_false (w_->pending)) 2144 if (ecb_expect_false (w_->pending))
1340 pendings [pri][w_->pending - 1].events |= revents; 2145 pendings [pri][w_->pending - 1].events |= revents;
1341 else 2146 else
1342 { 2147 {
1343 w_->pending = ++pendingcnt [pri]; 2148 w_->pending = ++pendingcnt [pri];
1344 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2149 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
1345 pendings [pri][w_->pending - 1].w = w_; 2150 pendings [pri][w_->pending - 1].w = w_;
1346 pendings [pri][w_->pending - 1].events = revents; 2151 pendings [pri][w_->pending - 1].events = revents;
1347 } 2152 }
2153
2154 pendingpri = NUMPRI - 1;
1348} 2155}
1349 2156
1350inline_speed void 2157inline_speed void
1351feed_reverse (EV_P_ W w) 2158feed_reverse (EV_P_ W w)
1352{ 2159{
1353 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2160 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
1354 rfeeds [rfeedcnt++] = w; 2161 rfeeds [rfeedcnt++] = w;
1355} 2162}
1356 2163
1357inline_size void 2164inline_size void
1358feed_reverse_done (EV_P_ int revents) 2165feed_reverse_done (EV_P_ int revents)
… …
1393inline_speed void 2200inline_speed void
1394fd_event (EV_P_ int fd, int revents) 2201fd_event (EV_P_ int fd, int revents)
1395{ 2202{
1396 ANFD *anfd = anfds + fd; 2203 ANFD *anfd = anfds + fd;
1397 2204
1398 if (expect_true (!anfd->reify)) 2205 if (ecb_expect_true (!anfd->reify))
1399 fd_event_nocheck (EV_A_ fd, revents); 2206 fd_event_nocheck (EV_A_ fd, revents);
1400} 2207}
1401 2208
1402void 2209void
1403ev_feed_fd_event (EV_P_ int fd, int revents) 2210ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
1404{ 2211{
1405 if (fd >= 0 && fd < anfdmax) 2212 if (fd >= 0 && fd < anfdmax)
1406 fd_event_nocheck (EV_A_ fd, revents); 2213 fd_event_nocheck (EV_A_ fd, revents);
1407} 2214}
1408 2215
… …
1445 ev_io *w; 2252 ev_io *w;
1446 2253
1447 unsigned char o_events = anfd->events; 2254 unsigned char o_events = anfd->events;
1448 unsigned char o_reify = anfd->reify; 2255 unsigned char o_reify = anfd->reify;
1449 2256
1450 anfd->reify = 0; 2257 anfd->reify = 0;
1451 2258
1452 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 2259 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
1453 { 2260 {
1454 anfd->events = 0; 2261 anfd->events = 0;
1455 2262
1456 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2263 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1457 anfd->events |= (unsigned char)w->events; 2264 anfd->events |= (unsigned char)w->events;
… …
1466 2273
1467 fdchangecnt = 0; 2274 fdchangecnt = 0;
1468} 2275}
1469 2276
1470/* something about the given fd changed */ 2277/* something about the given fd changed */
1471inline_size void 2278inline_size
2279void
1472fd_change (EV_P_ int fd, int flags) 2280fd_change (EV_P_ int fd, int flags)
1473{ 2281{
1474 unsigned char reify = anfds [fd].reify; 2282 unsigned char reify = anfds [fd].reify;
1475 anfds [fd].reify |= flags; 2283 anfds [fd].reify |= flags;
1476 2284
1477 if (expect_true (!reify)) 2285 if (ecb_expect_true (!reify))
1478 { 2286 {
1479 ++fdchangecnt; 2287 ++fdchangecnt;
1480 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2288 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
1481 fdchanges [fdchangecnt - 1] = fd; 2289 fdchanges [fdchangecnt - 1] = fd;
1482 } 2290 }
1483} 2291}
1484 2292
1485/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2293/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1486inline_speed void ecb_cold 2294inline_speed ecb_cold void
1487fd_kill (EV_P_ int fd) 2295fd_kill (EV_P_ int fd)
1488{ 2296{
1489 ev_io *w; 2297 ev_io *w;
1490 2298
1491 while ((w = (ev_io *)anfds [fd].head)) 2299 while ((w = (ev_io *)anfds [fd].head))
… …
1494 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2302 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1495 } 2303 }
1496} 2304}
1497 2305
1498/* check whether the given fd is actually valid, for error recovery */ 2306/* check whether the given fd is actually valid, for error recovery */
1499inline_size int ecb_cold 2307inline_size ecb_cold int
1500fd_valid (int fd) 2308fd_valid (int fd)
1501{ 2309{
1502#ifdef _WIN32 2310#ifdef _WIN32
1503 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2311 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1504#else 2312#else
1505 return fcntl (fd, F_GETFD) != -1; 2313 return fcntl (fd, F_GETFD) != -1;
1506#endif 2314#endif
1507} 2315}
1508 2316
1509/* called on EBADF to verify fds */ 2317/* called on EBADF to verify fds */
1510static void noinline ecb_cold 2318ecb_noinline ecb_cold
2319static void
1511fd_ebadf (EV_P) 2320fd_ebadf (EV_P)
1512{ 2321{
1513 int fd; 2322 int fd;
1514 2323
1515 for (fd = 0; fd < anfdmax; ++fd) 2324 for (fd = 0; fd < anfdmax; ++fd)
… …
1517 if (!fd_valid (fd) && errno == EBADF) 2326 if (!fd_valid (fd) && errno == EBADF)
1518 fd_kill (EV_A_ fd); 2327 fd_kill (EV_A_ fd);
1519} 2328}
1520 2329
1521/* called on ENOMEM in select/poll to kill some fds and retry */ 2330/* called on ENOMEM in select/poll to kill some fds and retry */
1522static void noinline ecb_cold 2331ecb_noinline ecb_cold
2332static void
1523fd_enomem (EV_P) 2333fd_enomem (EV_P)
1524{ 2334{
1525 int fd; 2335 int fd;
1526 2336
1527 for (fd = anfdmax; fd--; ) 2337 for (fd = anfdmax; fd--; )
… …
1531 break; 2341 break;
1532 } 2342 }
1533} 2343}
1534 2344
1535/* usually called after fork if backend needs to re-arm all fds from scratch */ 2345/* usually called after fork if backend needs to re-arm all fds from scratch */
1536static void noinline 2346ecb_noinline
2347static void
1537fd_rearm_all (EV_P) 2348fd_rearm_all (EV_P)
1538{ 2349{
1539 int fd; 2350 int fd;
1540 2351
1541 for (fd = 0; fd < anfdmax; ++fd) 2352 for (fd = 0; fd < anfdmax; ++fd)
… …
1594 ev_tstamp minat; 2405 ev_tstamp minat;
1595 ANHE *minpos; 2406 ANHE *minpos;
1596 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2407 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1597 2408
1598 /* find minimum child */ 2409 /* find minimum child */
1599 if (expect_true (pos + DHEAP - 1 < E)) 2410 if (ecb_expect_true (pos + DHEAP - 1 < E))
1600 { 2411 {
1601 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2412 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1602 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2413 if ( minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1603 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2414 if ( minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1604 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2415 if ( minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1605 } 2416 }
1606 else if (pos < E) 2417 else if (pos < E)
1607 { 2418 {
1608 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2419 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1609 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2420 if (pos + 1 < E && minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1610 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2421 if (pos + 2 < E && minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1611 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2422 if (pos + 3 < E && minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1612 } 2423 }
1613 else 2424 else
1614 break; 2425 break;
1615 2426
1616 if (ANHE_at (he) <= minat) 2427 if (ANHE_at (he) <= minat)
… …
1624 2435
1625 heap [k] = he; 2436 heap [k] = he;
1626 ev_active (ANHE_w (he)) = k; 2437 ev_active (ANHE_w (he)) = k;
1627} 2438}
1628 2439
1629#else /* 4HEAP */ 2440#else /* not 4HEAP */
1630 2441
1631#define HEAP0 1 2442#define HEAP0 1
1632#define HPARENT(k) ((k) >> 1) 2443#define HPARENT(k) ((k) >> 1)
1633#define UPHEAP_DONE(p,k) (!(p)) 2444#define UPHEAP_DONE(p,k) (!(p))
1634 2445
… …
1722 2533
1723/*****************************************************************************/ 2534/*****************************************************************************/
1724 2535
1725#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2536#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1726 2537
1727static void noinline ecb_cold 2538ecb_noinline ecb_cold
2539static void
1728evpipe_init (EV_P) 2540evpipe_init (EV_P)
1729{ 2541{
1730 if (!ev_is_active (&pipe_w)) 2542 if (!ev_is_active (&pipe_w))
1731 { 2543 {
2544 int fds [2];
2545
1732# if EV_USE_EVENTFD 2546# if EV_USE_EVENTFD
2547 fds [0] = -1;
1733 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2548 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1734 if (evfd < 0 && errno == EINVAL) 2549 if (fds [1] < 0 && errno == EINVAL)
1735 evfd = eventfd (0, 0); 2550 fds [1] = eventfd (0, 0);
1736 2551
1737 if (evfd >= 0) 2552 if (fds [1] < 0)
2553# endif
1738 { 2554 {
2555 while (pipe (fds))
2556 ev_syserr ("(libev) error creating signal/async pipe");
2557
2558 fd_intern (fds [0]);
2559 }
2560
1739 evpipe [0] = -1; 2561 evpipe [0] = fds [0];
1740 fd_intern (evfd); /* doing it twice doesn't hurt */ 2562
1741 ev_io_set (&pipe_w, evfd, EV_READ); 2563 if (evpipe [1] < 0)
2564 evpipe [1] = fds [1]; /* first call, set write fd */
2565 else
2566 {
2567 /* on subsequent calls, do not change evpipe [1] */
2568 /* so that evpipe_write can always rely on its value. */
2569 /* this branch does not do anything sensible on windows, */
2570 /* so must not be executed on windows */
2571
2572 dup2 (fds [1], evpipe [1]);
2573 close (fds [1]);
2574 }
2575
2576 fd_intern (evpipe [1]);
2577
2578 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2579 ev_io_start (EV_A_ &pipe_w);
2580 ev_unref (EV_A); /* watcher should not keep loop alive */
2581 }
2582}
2583
2584inline_speed void
2585evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2586{
2587 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2588
2589 if (ecb_expect_true (*flag))
2590 return;
2591
2592 *flag = 1;
2593 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2594
2595 pipe_write_skipped = 1;
2596
2597 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2598
2599 if (pipe_write_wanted)
2600 {
2601 int old_errno;
2602
2603 pipe_write_skipped = 0;
2604 ECB_MEMORY_FENCE_RELEASE;
2605
2606 old_errno = errno; /* save errno because write will clobber it */
2607
2608#if EV_USE_EVENTFD
2609 if (evpipe [0] < 0)
2610 {
2611 uint64_t counter = 1;
2612 write (evpipe [1], &counter, sizeof (uint64_t));
1742 } 2613 }
1743 else 2614 else
1744# endif 2615#endif
1745 { 2616 {
1746 while (pipe (evpipe)) 2617#ifdef _WIN32
1747 ev_syserr ("(libev) error creating signal/async pipe"); 2618 WSABUF buf;
1748 2619 DWORD sent;
1749 fd_intern (evpipe [0]); 2620 buf.buf = (char *)&buf;
1750 fd_intern (evpipe [1]); 2621 buf.len = 1;
1751 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2622 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1752 } 2623#else
1753
1754 ev_io_start (EV_A_ &pipe_w);
1755 ev_unref (EV_A); /* watcher should not keep loop alive */
1756 }
1757}
1758
1759inline_speed void
1760evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1761{
1762 if (expect_true (*flag))
1763 return;
1764
1765 *flag = 1;
1766
1767 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1768
1769 pipe_write_skipped = 1;
1770
1771 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1772
1773 if (pipe_write_wanted)
1774 {
1775 int old_errno;
1776
1777 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1778
1779 old_errno = errno; /* save errno because write will clobber it */
1780
1781#if EV_USE_EVENTFD
1782 if (evfd >= 0)
1783 {
1784 uint64_t counter = 1;
1785 write (evfd, &counter, sizeof (uint64_t));
1786 }
1787 else
1788#endif
1789 {
1790 /* win32 people keep sending patches that change this write() to send() */
1791 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1792 /* so when you think this write should be a send instead, please find out */
1793 /* where your send() is from - it's definitely not the microsoft send, and */
1794 /* tell me. thank you. */
1795 write (evpipe [1], &(evpipe [1]), 1); 2624 write (evpipe [1], &(evpipe [1]), 1);
2625#endif
1796 } 2626 }
1797 2627
1798 errno = old_errno; 2628 errno = old_errno;
1799 } 2629 }
1800} 2630}
… …
1807 int i; 2637 int i;
1808 2638
1809 if (revents & EV_READ) 2639 if (revents & EV_READ)
1810 { 2640 {
1811#if EV_USE_EVENTFD 2641#if EV_USE_EVENTFD
1812 if (evfd >= 0) 2642 if (evpipe [0] < 0)
1813 { 2643 {
1814 uint64_t counter; 2644 uint64_t counter;
1815 read (evfd, &counter, sizeof (uint64_t)); 2645 read (evpipe [1], &counter, sizeof (uint64_t));
1816 } 2646 }
1817 else 2647 else
1818#endif 2648#endif
1819 { 2649 {
1820 char dummy; 2650 char dummy[4];
1821 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2651#ifdef _WIN32
2652 WSABUF buf;
2653 DWORD recvd;
2654 DWORD flags = 0;
2655 buf.buf = dummy;
2656 buf.len = sizeof (dummy);
2657 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2658#else
1822 read (evpipe [0], &dummy, 1); 2659 read (evpipe [0], &dummy, sizeof (dummy));
2660#endif
1823 } 2661 }
1824 } 2662 }
1825 2663
1826 pipe_write_skipped = 0; 2664 pipe_write_skipped = 0;
2665
2666 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1827 2667
1828#if EV_SIGNAL_ENABLE 2668#if EV_SIGNAL_ENABLE
1829 if (sig_pending) 2669 if (sig_pending)
1830 { 2670 {
1831 sig_pending = 0; 2671 sig_pending = 0;
1832 2672
2673 ECB_MEMORY_FENCE;
2674
1833 for (i = EV_NSIG - 1; i--; ) 2675 for (i = EV_NSIG - 1; i--; )
1834 if (expect_false (signals [i].pending)) 2676 if (ecb_expect_false (signals [i].pending))
1835 ev_feed_signal_event (EV_A_ i + 1); 2677 ev_feed_signal_event (EV_A_ i + 1);
1836 } 2678 }
1837#endif 2679#endif
1838 2680
1839#if EV_ASYNC_ENABLE 2681#if EV_ASYNC_ENABLE
1840 if (async_pending) 2682 if (async_pending)
1841 { 2683 {
1842 async_pending = 0; 2684 async_pending = 0;
2685
2686 ECB_MEMORY_FENCE;
1843 2687
1844 for (i = asynccnt; i--; ) 2688 for (i = asynccnt; i--; )
1845 if (asyncs [i]->sent) 2689 if (asyncs [i]->sent)
1846 { 2690 {
1847 asyncs [i]->sent = 0; 2691 asyncs [i]->sent = 0;
2692 ECB_MEMORY_FENCE_RELEASE;
1848 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2693 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1849 } 2694 }
1850 } 2695 }
1851#endif 2696#endif
1852} 2697}
1853 2698
1854/*****************************************************************************/ 2699/*****************************************************************************/
1855 2700
1856void 2701void
1857ev_feed_signal (int signum) 2702ev_feed_signal (int signum) EV_NOEXCEPT
1858{ 2703{
1859#if EV_MULTIPLICITY 2704#if EV_MULTIPLICITY
2705 EV_P;
2706 ECB_MEMORY_FENCE_ACQUIRE;
1860 EV_P = signals [signum - 1].loop; 2707 EV_A = signals [signum - 1].loop;
1861 2708
1862 if (!EV_A) 2709 if (!EV_A)
1863 return; 2710 return;
1864#endif 2711#endif
1865 2712
1866 if (!ev_active (&pipe_w))
1867 return;
1868
1869 signals [signum - 1].pending = 1; 2713 signals [signum - 1].pending = 1;
1870 evpipe_write (EV_A_ &sig_pending); 2714 evpipe_write (EV_A_ &sig_pending);
1871} 2715}
1872 2716
1873static void 2717static void
… …
1878#endif 2722#endif
1879 2723
1880 ev_feed_signal (signum); 2724 ev_feed_signal (signum);
1881} 2725}
1882 2726
1883void noinline 2727ecb_noinline
2728void
1884ev_feed_signal_event (EV_P_ int signum) 2729ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1885{ 2730{
1886 WL w; 2731 WL w;
1887 2732
1888 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2733 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
1889 return; 2734 return;
1890 2735
1891 --signum; 2736 --signum;
1892 2737
1893#if EV_MULTIPLICITY 2738#if EV_MULTIPLICITY
1894 /* it is permissible to try to feed a signal to the wrong loop */ 2739 /* it is permissible to try to feed a signal to the wrong loop */
1895 /* or, likely more useful, feeding a signal nobody is waiting for */ 2740 /* or, likely more useful, feeding a signal nobody is waiting for */
1896 2741
1897 if (expect_false (signals [signum].loop != EV_A)) 2742 if (ecb_expect_false (signals [signum].loop != EV_A))
1898 return; 2743 return;
1899#endif 2744#endif
1900 2745
1901 signals [signum].pending = 0; 2746 signals [signum].pending = 0;
2747 ECB_MEMORY_FENCE_RELEASE;
1902 2748
1903 for (w = signals [signum].head; w; w = w->next) 2749 for (w = signals [signum].head; w; w = w->next)
1904 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2750 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1905} 2751}
1906 2752
… …
1997# include "ev_kqueue.c" 2843# include "ev_kqueue.c"
1998#endif 2844#endif
1999#if EV_USE_EPOLL 2845#if EV_USE_EPOLL
2000# include "ev_epoll.c" 2846# include "ev_epoll.c"
2001#endif 2847#endif
2848#if EV_USE_LINUXAIO
2849# include "ev_linuxaio.c"
2850#endif
2851#if EV_USE_IOURING
2852# include "ev_iouring.c"
2853#endif
2002#if EV_USE_POLL 2854#if EV_USE_POLL
2003# include "ev_poll.c" 2855# include "ev_poll.c"
2004#endif 2856#endif
2005#if EV_USE_SELECT 2857#if EV_USE_SELECT
2006# include "ev_select.c" 2858# include "ev_select.c"
2007#endif 2859#endif
2008 2860
2009int ecb_cold 2861ecb_cold int
2010ev_version_major (void) 2862ev_version_major (void) EV_NOEXCEPT
2011{ 2863{
2012 return EV_VERSION_MAJOR; 2864 return EV_VERSION_MAJOR;
2013} 2865}
2014 2866
2015int ecb_cold 2867ecb_cold int
2016ev_version_minor (void) 2868ev_version_minor (void) EV_NOEXCEPT
2017{ 2869{
2018 return EV_VERSION_MINOR; 2870 return EV_VERSION_MINOR;
2019} 2871}
2020 2872
2021/* return true if we are running with elevated privileges and should ignore env variables */ 2873/* return true if we are running with elevated privileges and should ignore env variables */
2022int inline_size ecb_cold 2874inline_size ecb_cold int
2023enable_secure (void) 2875enable_secure (void)
2024{ 2876{
2025#ifdef _WIN32 2877#ifdef _WIN32
2026 return 0; 2878 return 0;
2027#else 2879#else
2028 return getuid () != geteuid () 2880 return getuid () != geteuid ()
2029 || getgid () != getegid (); 2881 || getgid () != getegid ();
2030#endif 2882#endif
2031} 2883}
2032 2884
2033unsigned int ecb_cold 2885ecb_cold
2886unsigned int
2034ev_supported_backends (void) 2887ev_supported_backends (void) EV_NOEXCEPT
2035{ 2888{
2036 unsigned int flags = 0; 2889 unsigned int flags = 0;
2037 2890
2038 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2891 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2039 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2892 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
2040 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2893 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2894 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
2895 if (EV_USE_IOURING ) flags |= EVBACKEND_IOURING;
2041 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2896 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
2042 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2897 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
2043 2898
2044 return flags; 2899 return flags;
2045} 2900}
2046 2901
2047unsigned int ecb_cold 2902ecb_cold
2903unsigned int
2048ev_recommended_backends (void) 2904ev_recommended_backends (void) EV_NOEXCEPT
2049{ 2905{
2050 unsigned int flags = ev_supported_backends (); 2906 unsigned int flags = ev_supported_backends ();
2051 2907
2052#ifndef __NetBSD__ 2908#ifndef __NetBSD__
2053 /* kqueue is borked on everything but netbsd apparently */ 2909 /* kqueue is borked on everything but netbsd apparently */
… …
2061#endif 2917#endif
2062#ifdef __FreeBSD__ 2918#ifdef __FreeBSD__
2063 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ 2919 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2064#endif 2920#endif
2065 2921
2922 /* TODO: linuxaio is very experimental */
2923#if !EV_RECOMMEND_LINUXAIO
2924 flags &= ~EVBACKEND_LINUXAIO;
2925#endif
2926 /* TODO: linuxaio is super experimental */
2927#if !EV_RECOMMEND_IOURING
2928 flags &= ~EVBACKEND_IOURING;
2929#endif
2930
2066 return flags; 2931 return flags;
2067} 2932}
2068 2933
2069unsigned int ecb_cold 2934ecb_cold
2935unsigned int
2070ev_embeddable_backends (void) 2936ev_embeddable_backends (void) EV_NOEXCEPT
2071{ 2937{
2072 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2938 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2073 2939
2074 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2940 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2075 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 2941 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2076 flags &= ~EVBACKEND_EPOLL; 2942 flags &= ~EVBACKEND_EPOLL;
2077 2943
2944 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
2945
2946 /* EVBACKEND_IOURING is practically embeddable, but the current implementation is not
2947 * because our backend_fd is the epoll fd we need as fallback.
2948 * if the kernel ever is fixed, this might change...
2949 */
2950
2078 return flags; 2951 return flags;
2079} 2952}
2080 2953
2081unsigned int 2954unsigned int
2082ev_backend (EV_P) 2955ev_backend (EV_P) EV_NOEXCEPT
2083{ 2956{
2084 return backend; 2957 return backend;
2085} 2958}
2086 2959
2087#if EV_FEATURE_API 2960#if EV_FEATURE_API
2088unsigned int 2961unsigned int
2089ev_iteration (EV_P) 2962ev_iteration (EV_P) EV_NOEXCEPT
2090{ 2963{
2091 return loop_count; 2964 return loop_count;
2092} 2965}
2093 2966
2094unsigned int 2967unsigned int
2095ev_depth (EV_P) 2968ev_depth (EV_P) EV_NOEXCEPT
2096{ 2969{
2097 return loop_depth; 2970 return loop_depth;
2098} 2971}
2099 2972
2100void 2973void
2101ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2974ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2102{ 2975{
2103 io_blocktime = interval; 2976 io_blocktime = interval;
2104} 2977}
2105 2978
2106void 2979void
2107ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2980ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2108{ 2981{
2109 timeout_blocktime = interval; 2982 timeout_blocktime = interval;
2110} 2983}
2111 2984
2112void 2985void
2113ev_set_userdata (EV_P_ void *data) 2986ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2114{ 2987{
2115 userdata = data; 2988 userdata = data;
2116} 2989}
2117 2990
2118void * 2991void *
2119ev_userdata (EV_P) 2992ev_userdata (EV_P) EV_NOEXCEPT
2120{ 2993{
2121 return userdata; 2994 return userdata;
2122} 2995}
2123 2996
2124void 2997void
2125ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2998ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
2126{ 2999{
2127 invoke_cb = invoke_pending_cb; 3000 invoke_cb = invoke_pending_cb;
2128} 3001}
2129 3002
2130void 3003void
2131ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 3004ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
2132{ 3005{
2133 release_cb = release; 3006 release_cb = release;
2134 acquire_cb = acquire; 3007 acquire_cb = acquire;
2135} 3008}
2136#endif 3009#endif
2137 3010
2138/* initialise a loop structure, must be zero-initialised */ 3011/* initialise a loop structure, must be zero-initialised */
2139static void noinline ecb_cold 3012ecb_noinline ecb_cold
3013static void
2140loop_init (EV_P_ unsigned int flags) 3014loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
2141{ 3015{
2142 if (!backend) 3016 if (!backend)
2143 { 3017 {
2144 origflags = flags; 3018 origflags = flags;
2145 3019
… …
2190#if EV_ASYNC_ENABLE 3064#if EV_ASYNC_ENABLE
2191 async_pending = 0; 3065 async_pending = 0;
2192#endif 3066#endif
2193 pipe_write_skipped = 0; 3067 pipe_write_skipped = 0;
2194 pipe_write_wanted = 0; 3068 pipe_write_wanted = 0;
3069 evpipe [0] = -1;
3070 evpipe [1] = -1;
2195#if EV_USE_INOTIFY 3071#if EV_USE_INOTIFY
2196 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3072 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2197#endif 3073#endif
2198#if EV_USE_SIGNALFD 3074#if EV_USE_SIGNALFD
2199 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 3075 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
… …
2201 3077
2202 if (!(flags & EVBACKEND_MASK)) 3078 if (!(flags & EVBACKEND_MASK))
2203 flags |= ev_recommended_backends (); 3079 flags |= ev_recommended_backends ();
2204 3080
2205#if EV_USE_IOCP 3081#if EV_USE_IOCP
2206 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 3082 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2207#endif 3083#endif
2208#if EV_USE_PORT 3084#if EV_USE_PORT
2209 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3085 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
2210#endif 3086#endif
2211#if EV_USE_KQUEUE 3087#if EV_USE_KQUEUE
2212 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 3088 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
3089#endif
3090#if EV_USE_IOURING
3091 if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
3092#endif
3093#if EV_USE_LINUXAIO
3094 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
2213#endif 3095#endif
2214#if EV_USE_EPOLL 3096#if EV_USE_EPOLL
2215 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3097 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
2216#endif 3098#endif
2217#if EV_USE_POLL 3099#if EV_USE_POLL
2218 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3100 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
2219#endif 3101#endif
2220#if EV_USE_SELECT 3102#if EV_USE_SELECT
2221 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3103 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
2222#endif 3104#endif
2223 3105
2224 ev_prepare_init (&pending_w, pendingcb); 3106 ev_prepare_init (&pending_w, pendingcb);
2225 3107
2226#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3108#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
2229#endif 3111#endif
2230 } 3112 }
2231} 3113}
2232 3114
2233/* free up a loop structure */ 3115/* free up a loop structure */
2234void ecb_cold 3116ecb_cold
3117void
2235ev_loop_destroy (EV_P) 3118ev_loop_destroy (EV_P)
2236{ 3119{
2237 int i; 3120 int i;
2238 3121
2239#if EV_MULTIPLICITY 3122#if EV_MULTIPLICITY
… …
2242 return; 3125 return;
2243#endif 3126#endif
2244 3127
2245#if EV_CLEANUP_ENABLE 3128#if EV_CLEANUP_ENABLE
2246 /* queue cleanup watchers (and execute them) */ 3129 /* queue cleanup watchers (and execute them) */
2247 if (expect_false (cleanupcnt)) 3130 if (ecb_expect_false (cleanupcnt))
2248 { 3131 {
2249 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); 3132 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2250 EV_INVOKE_PENDING; 3133 EV_INVOKE_PENDING;
2251 } 3134 }
2252#endif 3135#endif
2253 3136
2254#if EV_CHILD_ENABLE 3137#if EV_CHILD_ENABLE
2255 if (ev_is_active (&childev)) 3138 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2256 { 3139 {
2257 ev_ref (EV_A); /* child watcher */ 3140 ev_ref (EV_A); /* child watcher */
2258 ev_signal_stop (EV_A_ &childev); 3141 ev_signal_stop (EV_A_ &childev);
2259 } 3142 }
2260#endif 3143#endif
… …
2262 if (ev_is_active (&pipe_w)) 3145 if (ev_is_active (&pipe_w))
2263 { 3146 {
2264 /*ev_ref (EV_A);*/ 3147 /*ev_ref (EV_A);*/
2265 /*ev_io_stop (EV_A_ &pipe_w);*/ 3148 /*ev_io_stop (EV_A_ &pipe_w);*/
2266 3149
2267#if EV_USE_EVENTFD
2268 if (evfd >= 0)
2269 close (evfd);
2270#endif
2271
2272 if (evpipe [0] >= 0)
2273 {
2274 EV_WIN32_CLOSE_FD (evpipe [0]); 3150 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2275 EV_WIN32_CLOSE_FD (evpipe [1]); 3151 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2276 }
2277 } 3152 }
2278 3153
2279#if EV_USE_SIGNALFD 3154#if EV_USE_SIGNALFD
2280 if (ev_is_active (&sigfd_w)) 3155 if (ev_is_active (&sigfd_w))
2281 close (sigfd); 3156 close (sigfd);
… …
2288 3163
2289 if (backend_fd >= 0) 3164 if (backend_fd >= 0)
2290 close (backend_fd); 3165 close (backend_fd);
2291 3166
2292#if EV_USE_IOCP 3167#if EV_USE_IOCP
2293 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3168 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2294#endif 3169#endif
2295#if EV_USE_PORT 3170#if EV_USE_PORT
2296 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3171 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
2297#endif 3172#endif
2298#if EV_USE_KQUEUE 3173#if EV_USE_KQUEUE
2299 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3174 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3175#endif
3176#if EV_USE_IOURING
3177 if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
3178#endif
3179#if EV_USE_LINUXAIO
3180 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
2300#endif 3181#endif
2301#if EV_USE_EPOLL 3182#if EV_USE_EPOLL
2302 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3183 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
2303#endif 3184#endif
2304#if EV_USE_POLL 3185#if EV_USE_POLL
2305 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3186 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
2306#endif 3187#endif
2307#if EV_USE_SELECT 3188#if EV_USE_SELECT
2308 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3189 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
2309#endif 3190#endif
2310 3191
2311 for (i = NUMPRI; i--; ) 3192 for (i = NUMPRI; i--; )
2312 { 3193 {
2313 array_free (pending, [i]); 3194 array_free (pending, [i]);
… …
2355 3236
2356inline_size void 3237inline_size void
2357loop_fork (EV_P) 3238loop_fork (EV_P)
2358{ 3239{
2359#if EV_USE_PORT 3240#if EV_USE_PORT
2360 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3241 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
2361#endif 3242#endif
2362#if EV_USE_KQUEUE 3243#if EV_USE_KQUEUE
2363 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3244 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3245#endif
3246#if EV_USE_IOURING
3247 if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
3248#endif
3249#if EV_USE_LINUXAIO
3250 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
2364#endif 3251#endif
2365#if EV_USE_EPOLL 3252#if EV_USE_EPOLL
2366 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3253 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
2367#endif 3254#endif
2368#if EV_USE_INOTIFY 3255#if EV_USE_INOTIFY
2369 infy_fork (EV_A); 3256 infy_fork (EV_A);
2370#endif 3257#endif
2371 3258
3259#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2372 if (ev_is_active (&pipe_w)) 3260 if (ev_is_active (&pipe_w) && postfork != 2)
2373 { 3261 {
2374 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 3262 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2375 3263
2376 ev_ref (EV_A); 3264 ev_ref (EV_A);
2377 ev_io_stop (EV_A_ &pipe_w); 3265 ev_io_stop (EV_A_ &pipe_w);
2378 3266
2379#if EV_USE_EVENTFD
2380 if (evfd >= 0)
2381 close (evfd);
2382#endif
2383
2384 if (evpipe [0] >= 0) 3267 if (evpipe [0] >= 0)
2385 {
2386 EV_WIN32_CLOSE_FD (evpipe [0]); 3268 EV_WIN32_CLOSE_FD (evpipe [0]);
2387 EV_WIN32_CLOSE_FD (evpipe [1]);
2388 }
2389 3269
2390#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2391 evpipe_init (EV_A); 3270 evpipe_init (EV_A);
2392 /* now iterate over everything, in case we missed something */ 3271 /* iterate over everything, in case we missed something before */
2393 pipecb (EV_A_ &pipe_w, EV_READ); 3272 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2394#endif
2395 } 3273 }
3274#endif
2396 3275
2397 postfork = 0; 3276 postfork = 0;
2398} 3277}
2399 3278
2400#if EV_MULTIPLICITY 3279#if EV_MULTIPLICITY
2401 3280
3281ecb_cold
2402struct ev_loop * ecb_cold 3282struct ev_loop *
2403ev_loop_new (unsigned int flags) 3283ev_loop_new (unsigned int flags) EV_NOEXCEPT
2404{ 3284{
2405 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3285 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2406 3286
2407 memset (EV_A, 0, sizeof (struct ev_loop)); 3287 memset (EV_A, 0, sizeof (struct ev_loop));
2408 loop_init (EV_A_ flags); 3288 loop_init (EV_A_ flags);
… …
2415} 3295}
2416 3296
2417#endif /* multiplicity */ 3297#endif /* multiplicity */
2418 3298
2419#if EV_VERIFY 3299#if EV_VERIFY
2420static void noinline ecb_cold 3300ecb_noinline ecb_cold
3301static void
2421verify_watcher (EV_P_ W w) 3302verify_watcher (EV_P_ W w)
2422{ 3303{
2423 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3304 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2424 3305
2425 if (w->pending) 3306 if (w->pending)
2426 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3307 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2427} 3308}
2428 3309
2429static void noinline ecb_cold 3310ecb_noinline ecb_cold
3311static void
2430verify_heap (EV_P_ ANHE *heap, int N) 3312verify_heap (EV_P_ ANHE *heap, int N)
2431{ 3313{
2432 int i; 3314 int i;
2433 3315
2434 for (i = HEAP0; i < N + HEAP0; ++i) 3316 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2439 3321
2440 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3322 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2441 } 3323 }
2442} 3324}
2443 3325
2444static void noinline ecb_cold 3326ecb_noinline ecb_cold
3327static void
2445array_verify (EV_P_ W *ws, int cnt) 3328array_verify (EV_P_ W *ws, int cnt)
2446{ 3329{
2447 while (cnt--) 3330 while (cnt--)
2448 { 3331 {
2449 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3332 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2452} 3335}
2453#endif 3336#endif
2454 3337
2455#if EV_FEATURE_API 3338#if EV_FEATURE_API
2456void ecb_cold 3339void ecb_cold
2457ev_verify (EV_P) 3340ev_verify (EV_P) EV_NOEXCEPT
2458{ 3341{
2459#if EV_VERIFY 3342#if EV_VERIFY
2460 int i; 3343 int i;
2461 WL w; 3344 WL w, w2;
2462 3345
2463 assert (activecnt >= -1); 3346 assert (activecnt >= -1);
2464 3347
2465 assert (fdchangemax >= fdchangecnt); 3348 assert (fdchangemax >= fdchangecnt);
2466 for (i = 0; i < fdchangecnt; ++i) 3349 for (i = 0; i < fdchangecnt; ++i)
2467 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3350 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2468 3351
2469 assert (anfdmax >= 0); 3352 assert (anfdmax >= 0);
2470 for (i = 0; i < anfdmax; ++i) 3353 for (i = 0; i < anfdmax; ++i)
3354 {
3355 int j = 0;
3356
2471 for (w = anfds [i].head; w; w = w->next) 3357 for (w = w2 = anfds [i].head; w; w = w->next)
2472 { 3358 {
2473 verify_watcher (EV_A_ (W)w); 3359 verify_watcher (EV_A_ (W)w);
3360
3361 if (j++ & 1)
3362 {
3363 assert (("libev: io watcher list contains a loop", w != w2));
3364 w2 = w2->next;
3365 }
3366
2474 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3367 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2475 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3368 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2476 } 3369 }
3370 }
2477 3371
2478 assert (timermax >= timercnt); 3372 assert (timermax >= timercnt);
2479 verify_heap (EV_A_ timers, timercnt); 3373 verify_heap (EV_A_ timers, timercnt);
2480 3374
2481#if EV_PERIODIC_ENABLE 3375#if EV_PERIODIC_ENABLE
… …
2527#endif 3421#endif
2528} 3422}
2529#endif 3423#endif
2530 3424
2531#if EV_MULTIPLICITY 3425#if EV_MULTIPLICITY
3426ecb_cold
2532struct ev_loop * ecb_cold 3427struct ev_loop *
2533#else 3428#else
2534int 3429int
2535#endif 3430#endif
2536ev_default_loop (unsigned int flags) 3431ev_default_loop (unsigned int flags) EV_NOEXCEPT
2537{ 3432{
2538 if (!ev_default_loop_ptr) 3433 if (!ev_default_loop_ptr)
2539 { 3434 {
2540#if EV_MULTIPLICITY 3435#if EV_MULTIPLICITY
2541 EV_P = ev_default_loop_ptr = &default_loop_struct; 3436 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2560 3455
2561 return ev_default_loop_ptr; 3456 return ev_default_loop_ptr;
2562} 3457}
2563 3458
2564void 3459void
2565ev_loop_fork (EV_P) 3460ev_loop_fork (EV_P) EV_NOEXCEPT
2566{ 3461{
2567 postfork = 1; /* must be in line with ev_default_fork */ 3462 postfork = 1;
2568} 3463}
2569 3464
2570/*****************************************************************************/ 3465/*****************************************************************************/
2571 3466
2572void 3467void
… …
2574{ 3469{
2575 EV_CB_INVOKE ((W)w, revents); 3470 EV_CB_INVOKE ((W)w, revents);
2576} 3471}
2577 3472
2578unsigned int 3473unsigned int
2579ev_pending_count (EV_P) 3474ev_pending_count (EV_P) EV_NOEXCEPT
2580{ 3475{
2581 int pri; 3476 int pri;
2582 unsigned int count = 0; 3477 unsigned int count = 0;
2583 3478
2584 for (pri = NUMPRI; pri--; ) 3479 for (pri = NUMPRI; pri--; )
2585 count += pendingcnt [pri]; 3480 count += pendingcnt [pri];
2586 3481
2587 return count; 3482 return count;
2588} 3483}
2589 3484
2590void noinline 3485ecb_noinline
3486void
2591ev_invoke_pending (EV_P) 3487ev_invoke_pending (EV_P)
2592{ 3488{
2593 int pri; 3489 pendingpri = NUMPRI;
2594 3490
2595 for (pri = NUMPRI; pri--; ) 3491 do
3492 {
3493 --pendingpri;
3494
3495 /* pendingpri possibly gets modified in the inner loop */
2596 while (pendingcnt [pri]) 3496 while (pendingcnt [pendingpri])
2597 { 3497 {
2598 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3498 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2599 3499
2600 p->w->pending = 0; 3500 p->w->pending = 0;
2601 EV_CB_INVOKE (p->w, p->events); 3501 EV_CB_INVOKE (p->w, p->events);
2602 EV_FREQUENT_CHECK; 3502 EV_FREQUENT_CHECK;
2603 } 3503 }
3504 }
3505 while (pendingpri);
2604} 3506}
2605 3507
2606#if EV_IDLE_ENABLE 3508#if EV_IDLE_ENABLE
2607/* make idle watchers pending. this handles the "call-idle */ 3509/* make idle watchers pending. this handles the "call-idle */
2608/* only when higher priorities are idle" logic */ 3510/* only when higher priorities are idle" logic */
2609inline_size void 3511inline_size void
2610idle_reify (EV_P) 3512idle_reify (EV_P)
2611{ 3513{
2612 if (expect_false (idleall)) 3514 if (ecb_expect_false (idleall))
2613 { 3515 {
2614 int pri; 3516 int pri;
2615 3517
2616 for (pri = NUMPRI; pri--; ) 3518 for (pri = NUMPRI; pri--; )
2617 { 3519 {
… …
2647 { 3549 {
2648 ev_at (w) += w->repeat; 3550 ev_at (w) += w->repeat;
2649 if (ev_at (w) < mn_now) 3551 if (ev_at (w) < mn_now)
2650 ev_at (w) = mn_now; 3552 ev_at (w) = mn_now;
2651 3553
2652 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 3554 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > EV_TS_CONST (0.)));
2653 3555
2654 ANHE_at_cache (timers [HEAP0]); 3556 ANHE_at_cache (timers [HEAP0]);
2655 downheap (timers, timercnt, HEAP0); 3557 downheap (timers, timercnt, HEAP0);
2656 } 3558 }
2657 else 3559 else
… …
2666 } 3568 }
2667} 3569}
2668 3570
2669#if EV_PERIODIC_ENABLE 3571#if EV_PERIODIC_ENABLE
2670 3572
2671static void noinline 3573ecb_noinline
3574static void
2672periodic_recalc (EV_P_ ev_periodic *w) 3575periodic_recalc (EV_P_ ev_periodic *w)
2673{ 3576{
2674 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3577 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2675 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); 3578 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2676 3579
… …
2678 while (at <= ev_rt_now) 3581 while (at <= ev_rt_now)
2679 { 3582 {
2680 ev_tstamp nat = at + w->interval; 3583 ev_tstamp nat = at + w->interval;
2681 3584
2682 /* when resolution fails us, we use ev_rt_now */ 3585 /* when resolution fails us, we use ev_rt_now */
2683 if (expect_false (nat == at)) 3586 if (ecb_expect_false (nat == at))
2684 { 3587 {
2685 at = ev_rt_now; 3588 at = ev_rt_now;
2686 break; 3589 break;
2687 } 3590 }
2688 3591
… …
2698{ 3601{
2699 EV_FREQUENT_CHECK; 3602 EV_FREQUENT_CHECK;
2700 3603
2701 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3604 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2702 { 3605 {
2703 int feed_count = 0;
2704
2705 do 3606 do
2706 { 3607 {
2707 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3608 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2708 3609
2709 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3610 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2736 } 3637 }
2737} 3638}
2738 3639
2739/* simply recalculate all periodics */ 3640/* simply recalculate all periodics */
2740/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3641/* TODO: maybe ensure that at least one event happens when jumping forward? */
2741static void noinline ecb_cold 3642ecb_noinline ecb_cold
3643static void
2742periodics_reschedule (EV_P) 3644periodics_reschedule (EV_P)
2743{ 3645{
2744 int i; 3646 int i;
2745 3647
2746 /* adjust periodics after time jump */ 3648 /* adjust periodics after time jump */
… …
2759 reheap (periodics, periodiccnt); 3661 reheap (periodics, periodiccnt);
2760} 3662}
2761#endif 3663#endif
2762 3664
2763/* adjust all timers by a given offset */ 3665/* adjust all timers by a given offset */
2764static void noinline ecb_cold 3666ecb_noinline ecb_cold
3667static void
2765timers_reschedule (EV_P_ ev_tstamp adjust) 3668timers_reschedule (EV_P_ ev_tstamp adjust)
2766{ 3669{
2767 int i; 3670 int i;
2768 3671
2769 for (i = 0; i < timercnt; ++i) 3672 for (i = 0; i < timercnt; ++i)
… …
2778/* also detect if there was a timejump, and act accordingly */ 3681/* also detect if there was a timejump, and act accordingly */
2779inline_speed void 3682inline_speed void
2780time_update (EV_P_ ev_tstamp max_block) 3683time_update (EV_P_ ev_tstamp max_block)
2781{ 3684{
2782#if EV_USE_MONOTONIC 3685#if EV_USE_MONOTONIC
2783 if (expect_true (have_monotonic)) 3686 if (ecb_expect_true (have_monotonic))
2784 { 3687 {
2785 int i; 3688 int i;
2786 ev_tstamp odiff = rtmn_diff; 3689 ev_tstamp odiff = rtmn_diff;
2787 3690
2788 mn_now = get_clock (); 3691 mn_now = get_clock ();
2789 3692
2790 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3693 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2791 /* interpolate in the meantime */ 3694 /* interpolate in the meantime */
2792 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3695 if (ecb_expect_true (mn_now - now_floor < EV_TS_CONST (MIN_TIMEJUMP * .5)))
2793 { 3696 {
2794 ev_rt_now = rtmn_diff + mn_now; 3697 ev_rt_now = rtmn_diff + mn_now;
2795 return; 3698 return;
2796 } 3699 }
2797 3700
… …
2811 ev_tstamp diff; 3714 ev_tstamp diff;
2812 rtmn_diff = ev_rt_now - mn_now; 3715 rtmn_diff = ev_rt_now - mn_now;
2813 3716
2814 diff = odiff - rtmn_diff; 3717 diff = odiff - rtmn_diff;
2815 3718
2816 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP)) 3719 if (ecb_expect_true ((diff < EV_TS_CONST (0.) ? -diff : diff) < EV_TS_CONST (MIN_TIMEJUMP)))
2817 return; /* all is well */ 3720 return; /* all is well */
2818 3721
2819 ev_rt_now = ev_time (); 3722 ev_rt_now = ev_time ();
2820 mn_now = get_clock (); 3723 mn_now = get_clock ();
2821 now_floor = mn_now; 3724 now_floor = mn_now;
… …
2830 else 3733 else
2831#endif 3734#endif
2832 { 3735 {
2833 ev_rt_now = ev_time (); 3736 ev_rt_now = ev_time ();
2834 3737
2835 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 3738 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + EV_TS_CONST (MIN_TIMEJUMP)))
2836 { 3739 {
2837 /* adjust timers. this is easy, as the offset is the same for all of them */ 3740 /* adjust timers. this is easy, as the offset is the same for all of them */
2838 timers_reschedule (EV_A_ ev_rt_now - mn_now); 3741 timers_reschedule (EV_A_ ev_rt_now - mn_now);
2839#if EV_PERIODIC_ENABLE 3742#if EV_PERIODIC_ENABLE
2840 periodics_reschedule (EV_A); 3743 periodics_reschedule (EV_A);
… …
2843 3746
2844 mn_now = ev_rt_now; 3747 mn_now = ev_rt_now;
2845 } 3748 }
2846} 3749}
2847 3750
2848void 3751int
2849ev_run (EV_P_ int flags) 3752ev_run (EV_P_ int flags)
2850{ 3753{
2851#if EV_FEATURE_API 3754#if EV_FEATURE_API
2852 ++loop_depth; 3755 ++loop_depth;
2853#endif 3756#endif
… …
2863#if EV_VERIFY >= 2 3766#if EV_VERIFY >= 2
2864 ev_verify (EV_A); 3767 ev_verify (EV_A);
2865#endif 3768#endif
2866 3769
2867#ifndef _WIN32 3770#ifndef _WIN32
2868 if (expect_false (curpid)) /* penalise the forking check even more */ 3771 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
2869 if (expect_false (getpid () != curpid)) 3772 if (ecb_expect_false (getpid () != curpid))
2870 { 3773 {
2871 curpid = getpid (); 3774 curpid = getpid ();
2872 postfork = 1; 3775 postfork = 1;
2873 } 3776 }
2874#endif 3777#endif
2875 3778
2876#if EV_FORK_ENABLE 3779#if EV_FORK_ENABLE
2877 /* we might have forked, so queue fork handlers */ 3780 /* we might have forked, so queue fork handlers */
2878 if (expect_false (postfork)) 3781 if (ecb_expect_false (postfork))
2879 if (forkcnt) 3782 if (forkcnt)
2880 { 3783 {
2881 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3784 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2882 EV_INVOKE_PENDING; 3785 EV_INVOKE_PENDING;
2883 } 3786 }
2884#endif 3787#endif
2885 3788
2886#if EV_PREPARE_ENABLE 3789#if EV_PREPARE_ENABLE
2887 /* queue prepare watchers (and execute them) */ 3790 /* queue prepare watchers (and execute them) */
2888 if (expect_false (preparecnt)) 3791 if (ecb_expect_false (preparecnt))
2889 { 3792 {
2890 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3793 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2891 EV_INVOKE_PENDING; 3794 EV_INVOKE_PENDING;
2892 } 3795 }
2893#endif 3796#endif
2894 3797
2895 if (expect_false (loop_done)) 3798 if (ecb_expect_false (loop_done))
2896 break; 3799 break;
2897 3800
2898 /* we might have forked, so reify kernel state if necessary */ 3801 /* we might have forked, so reify kernel state if necessary */
2899 if (expect_false (postfork)) 3802 if (ecb_expect_false (postfork))
2900 loop_fork (EV_A); 3803 loop_fork (EV_A);
2901 3804
2902 /* update fd-related kernel structures */ 3805 /* update fd-related kernel structures */
2903 fd_reify (EV_A); 3806 fd_reify (EV_A);
2904 3807
… …
2909 3812
2910 /* remember old timestamp for io_blocktime calculation */ 3813 /* remember old timestamp for io_blocktime calculation */
2911 ev_tstamp prev_mn_now = mn_now; 3814 ev_tstamp prev_mn_now = mn_now;
2912 3815
2913 /* update time to cancel out callback processing overhead */ 3816 /* update time to cancel out callback processing overhead */
2914 time_update (EV_A_ 1e100); 3817 time_update (EV_A_ EV_TS_CONST (EV_TSTAMP_HUGE));
2915 3818
2916 /* from now on, we want a pipe-wake-up */ 3819 /* from now on, we want a pipe-wake-up */
2917 pipe_write_wanted = 1; 3820 pipe_write_wanted = 1;
2918 3821
2919 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */ 3822 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
2920 3823
2921 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) 3824 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2922 { 3825 {
2923 waittime = MAX_BLOCKTIME; 3826 waittime = EV_TS_CONST (MAX_BLOCKTIME);
2924 3827
2925 if (timercnt) 3828 if (timercnt)
2926 { 3829 {
2927 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now; 3830 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2928 if (waittime > to) waittime = to; 3831 if (waittime > to) waittime = to;
… …
2935 if (waittime > to) waittime = to; 3838 if (waittime > to) waittime = to;
2936 } 3839 }
2937#endif 3840#endif
2938 3841
2939 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3842 /* don't let timeouts decrease the waittime below timeout_blocktime */
2940 if (expect_false (waittime < timeout_blocktime)) 3843 if (ecb_expect_false (waittime < timeout_blocktime))
2941 waittime = timeout_blocktime; 3844 waittime = timeout_blocktime;
2942 3845
2943 /* at this point, we NEED to wait, so we have to ensure */ 3846 /* at this point, we NEED to wait, so we have to ensure */
2944 /* to pass a minimum nonzero value to the backend */ 3847 /* to pass a minimum nonzero value to the backend */
2945 if (expect_false (waittime < backend_mintime)) 3848 if (ecb_expect_false (waittime < backend_mintime))
2946 waittime = backend_mintime; 3849 waittime = backend_mintime;
2947 3850
2948 /* extra check because io_blocktime is commonly 0 */ 3851 /* extra check because io_blocktime is commonly 0 */
2949 if (expect_false (io_blocktime)) 3852 if (ecb_expect_false (io_blocktime))
2950 { 3853 {
2951 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3854 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2952 3855
2953 if (sleeptime > waittime - backend_mintime) 3856 if (sleeptime > waittime - backend_mintime)
2954 sleeptime = waittime - backend_mintime; 3857 sleeptime = waittime - backend_mintime;
2955 3858
2956 if (expect_true (sleeptime > 0.)) 3859 if (ecb_expect_true (sleeptime > EV_TS_CONST (0.)))
2957 { 3860 {
2958 ev_sleep (sleeptime); 3861 ev_sleep (sleeptime);
2959 waittime -= sleeptime; 3862 waittime -= sleeptime;
2960 } 3863 }
2961 } 3864 }
… …
2966#endif 3869#endif
2967 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ 3870 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2968 backend_poll (EV_A_ waittime); 3871 backend_poll (EV_A_ waittime);
2969 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3872 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2970 3873
2971 pipe_write_wanted = 0; /* just an optimsiation, no fence needed */ 3874 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
2972 3875
3876 ECB_MEMORY_FENCE_ACQUIRE;
2973 if (pipe_write_skipped) 3877 if (pipe_write_skipped)
2974 { 3878 {
2975 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 3879 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
2976 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3880 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2977 } 3881 }
2978 3882
2979
2980 /* update ev_rt_now, do magic */ 3883 /* update ev_rt_now, do magic */
2981 time_update (EV_A_ waittime + sleeptime); 3884 time_update (EV_A_ waittime + sleeptime);
2982 } 3885 }
2983 3886
2984 /* queue pending timers and reschedule them */ 3887 /* queue pending timers and reschedule them */
… …
2992 idle_reify (EV_A); 3895 idle_reify (EV_A);
2993#endif 3896#endif
2994 3897
2995#if EV_CHECK_ENABLE 3898#if EV_CHECK_ENABLE
2996 /* queue check watchers, to be executed first */ 3899 /* queue check watchers, to be executed first */
2997 if (expect_false (checkcnt)) 3900 if (ecb_expect_false (checkcnt))
2998 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3901 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2999#endif 3902#endif
3000 3903
3001 EV_INVOKE_PENDING; 3904 EV_INVOKE_PENDING;
3002 } 3905 }
3003 while (expect_true ( 3906 while (ecb_expect_true (
3004 activecnt 3907 activecnt
3005 && !loop_done 3908 && !loop_done
3006 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) 3909 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
3007 )); 3910 ));
3008 3911
… …
3010 loop_done = EVBREAK_CANCEL; 3913 loop_done = EVBREAK_CANCEL;
3011 3914
3012#if EV_FEATURE_API 3915#if EV_FEATURE_API
3013 --loop_depth; 3916 --loop_depth;
3014#endif 3917#endif
3015}
3016 3918
3919 return activecnt;
3920}
3921
3017void 3922void
3018ev_break (EV_P_ int how) 3923ev_break (EV_P_ int how) EV_NOEXCEPT
3019{ 3924{
3020 loop_done = how; 3925 loop_done = how;
3021} 3926}
3022 3927
3023void 3928void
3024ev_ref (EV_P) 3929ev_ref (EV_P) EV_NOEXCEPT
3025{ 3930{
3026 ++activecnt; 3931 ++activecnt;
3027} 3932}
3028 3933
3029void 3934void
3030ev_unref (EV_P) 3935ev_unref (EV_P) EV_NOEXCEPT
3031{ 3936{
3032 --activecnt; 3937 --activecnt;
3033} 3938}
3034 3939
3035void 3940void
3036ev_now_update (EV_P) 3941ev_now_update (EV_P) EV_NOEXCEPT
3037{ 3942{
3038 time_update (EV_A_ 1e100); 3943 time_update (EV_A_ EV_TSTAMP_HUGE);
3039} 3944}
3040 3945
3041void 3946void
3042ev_suspend (EV_P) 3947ev_suspend (EV_P) EV_NOEXCEPT
3043{ 3948{
3044 ev_now_update (EV_A); 3949 ev_now_update (EV_A);
3045} 3950}
3046 3951
3047void 3952void
3048ev_resume (EV_P) 3953ev_resume (EV_P) EV_NOEXCEPT
3049{ 3954{
3050 ev_tstamp mn_prev = mn_now; 3955 ev_tstamp mn_prev = mn_now;
3051 3956
3052 ev_now_update (EV_A); 3957 ev_now_update (EV_A);
3053 timers_reschedule (EV_A_ mn_now - mn_prev); 3958 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
3070inline_size void 3975inline_size void
3071wlist_del (WL *head, WL elem) 3976wlist_del (WL *head, WL elem)
3072{ 3977{
3073 while (*head) 3978 while (*head)
3074 { 3979 {
3075 if (expect_true (*head == elem)) 3980 if (ecb_expect_true (*head == elem))
3076 { 3981 {
3077 *head = elem->next; 3982 *head = elem->next;
3078 break; 3983 break;
3079 } 3984 }
3080 3985
… …
3092 w->pending = 0; 3997 w->pending = 0;
3093 } 3998 }
3094} 3999}
3095 4000
3096int 4001int
3097ev_clear_pending (EV_P_ void *w) 4002ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
3098{ 4003{
3099 W w_ = (W)w; 4004 W w_ = (W)w;
3100 int pending = w_->pending; 4005 int pending = w_->pending;
3101 4006
3102 if (expect_true (pending)) 4007 if (ecb_expect_true (pending))
3103 { 4008 {
3104 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4009 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3105 p->w = (W)&pending_w; 4010 p->w = (W)&pending_w;
3106 w_->pending = 0; 4011 w_->pending = 0;
3107 return p->events; 4012 return p->events;
… …
3134 w->active = 0; 4039 w->active = 0;
3135} 4040}
3136 4041
3137/*****************************************************************************/ 4042/*****************************************************************************/
3138 4043
3139void noinline 4044ecb_noinline
4045void
3140ev_io_start (EV_P_ ev_io *w) 4046ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
3141{ 4047{
3142 int fd = w->fd; 4048 int fd = w->fd;
3143 4049
3144 if (expect_false (ev_is_active (w))) 4050 if (ecb_expect_false (ev_is_active (w)))
3145 return; 4051 return;
3146 4052
3147 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4053 assert (("libev: ev_io_start called with negative fd", fd >= 0));
3148 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 4054 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
3149 4055
4056#if EV_VERIFY >= 2
4057 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4058#endif
3150 EV_FREQUENT_CHECK; 4059 EV_FREQUENT_CHECK;
3151 4060
3152 ev_start (EV_A_ (W)w, 1); 4061 ev_start (EV_A_ (W)w, 1);
3153 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4062 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
3154 wlist_add (&anfds[fd].head, (WL)w); 4063 wlist_add (&anfds[fd].head, (WL)w);
4064
4065 /* common bug, apparently */
4066 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3155 4067
3156 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 4068 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
3157 w->events &= ~EV__IOFDSET; 4069 w->events &= ~EV__IOFDSET;
3158 4070
3159 EV_FREQUENT_CHECK; 4071 EV_FREQUENT_CHECK;
3160} 4072}
3161 4073
3162void noinline 4074ecb_noinline
4075void
3163ev_io_stop (EV_P_ ev_io *w) 4076ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
3164{ 4077{
3165 clear_pending (EV_A_ (W)w); 4078 clear_pending (EV_A_ (W)w);
3166 if (expect_false (!ev_is_active (w))) 4079 if (ecb_expect_false (!ev_is_active (w)))
3167 return; 4080 return;
3168 4081
3169 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4082 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
3170 4083
4084#if EV_VERIFY >= 2
4085 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4086#endif
3171 EV_FREQUENT_CHECK; 4087 EV_FREQUENT_CHECK;
3172 4088
3173 wlist_del (&anfds[w->fd].head, (WL)w); 4089 wlist_del (&anfds[w->fd].head, (WL)w);
3174 ev_stop (EV_A_ (W)w); 4090 ev_stop (EV_A_ (W)w);
3175 4091
3176 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 4092 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3177 4093
3178 EV_FREQUENT_CHECK; 4094 EV_FREQUENT_CHECK;
3179} 4095}
3180 4096
3181void noinline 4097ecb_noinline
4098void
3182ev_timer_start (EV_P_ ev_timer *w) 4099ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
3183{ 4100{
3184 if (expect_false (ev_is_active (w))) 4101 if (ecb_expect_false (ev_is_active (w)))
3185 return; 4102 return;
3186 4103
3187 ev_at (w) += mn_now; 4104 ev_at (w) += mn_now;
3188 4105
3189 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4106 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
3190 4107
3191 EV_FREQUENT_CHECK; 4108 EV_FREQUENT_CHECK;
3192 4109
3193 ++timercnt; 4110 ++timercnt;
3194 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4111 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
3195 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4112 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
3196 ANHE_w (timers [ev_active (w)]) = (WT)w; 4113 ANHE_w (timers [ev_active (w)]) = (WT)w;
3197 ANHE_at_cache (timers [ev_active (w)]); 4114 ANHE_at_cache (timers [ev_active (w)]);
3198 upheap (timers, ev_active (w)); 4115 upheap (timers, ev_active (w));
3199 4116
3200 EV_FREQUENT_CHECK; 4117 EV_FREQUENT_CHECK;
3201 4118
3202 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4119 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
3203} 4120}
3204 4121
3205void noinline 4122ecb_noinline
4123void
3206ev_timer_stop (EV_P_ ev_timer *w) 4124ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
3207{ 4125{
3208 clear_pending (EV_A_ (W)w); 4126 clear_pending (EV_A_ (W)w);
3209 if (expect_false (!ev_is_active (w))) 4127 if (ecb_expect_false (!ev_is_active (w)))
3210 return; 4128 return;
3211 4129
3212 EV_FREQUENT_CHECK; 4130 EV_FREQUENT_CHECK;
3213 4131
3214 { 4132 {
… …
3216 4134
3217 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4135 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
3218 4136
3219 --timercnt; 4137 --timercnt;
3220 4138
3221 if (expect_true (active < timercnt + HEAP0)) 4139 if (ecb_expect_true (active < timercnt + HEAP0))
3222 { 4140 {
3223 timers [active] = timers [timercnt + HEAP0]; 4141 timers [active] = timers [timercnt + HEAP0];
3224 adjustheap (timers, timercnt, active); 4142 adjustheap (timers, timercnt, active);
3225 } 4143 }
3226 } 4144 }
… …
3230 ev_stop (EV_A_ (W)w); 4148 ev_stop (EV_A_ (W)w);
3231 4149
3232 EV_FREQUENT_CHECK; 4150 EV_FREQUENT_CHECK;
3233} 4151}
3234 4152
3235void noinline 4153ecb_noinline
4154void
3236ev_timer_again (EV_P_ ev_timer *w) 4155ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
3237{ 4156{
3238 EV_FREQUENT_CHECK; 4157 EV_FREQUENT_CHECK;
4158
4159 clear_pending (EV_A_ (W)w);
3239 4160
3240 if (ev_is_active (w)) 4161 if (ev_is_active (w))
3241 { 4162 {
3242 if (w->repeat) 4163 if (w->repeat)
3243 { 4164 {
… …
3256 4177
3257 EV_FREQUENT_CHECK; 4178 EV_FREQUENT_CHECK;
3258} 4179}
3259 4180
3260ev_tstamp 4181ev_tstamp
3261ev_timer_remaining (EV_P_ ev_timer *w) 4182ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
3262{ 4183{
3263 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4184 return ev_at (w) - (ev_is_active (w) ? mn_now : EV_TS_CONST (0.));
3264} 4185}
3265 4186
3266#if EV_PERIODIC_ENABLE 4187#if EV_PERIODIC_ENABLE
3267void noinline 4188ecb_noinline
4189void
3268ev_periodic_start (EV_P_ ev_periodic *w) 4190ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
3269{ 4191{
3270 if (expect_false (ev_is_active (w))) 4192 if (ecb_expect_false (ev_is_active (w)))
3271 return; 4193 return;
3272 4194
3273 if (w->reschedule_cb) 4195 if (w->reschedule_cb)
3274 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4196 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
3275 else if (w->interval) 4197 else if (w->interval)
… …
3282 4204
3283 EV_FREQUENT_CHECK; 4205 EV_FREQUENT_CHECK;
3284 4206
3285 ++periodiccnt; 4207 ++periodiccnt;
3286 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4208 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
3287 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4209 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
3288 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4210 ANHE_w (periodics [ev_active (w)]) = (WT)w;
3289 ANHE_at_cache (periodics [ev_active (w)]); 4211 ANHE_at_cache (periodics [ev_active (w)]);
3290 upheap (periodics, ev_active (w)); 4212 upheap (periodics, ev_active (w));
3291 4213
3292 EV_FREQUENT_CHECK; 4214 EV_FREQUENT_CHECK;
3293 4215
3294 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4216 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
3295} 4217}
3296 4218
3297void noinline 4219ecb_noinline
4220void
3298ev_periodic_stop (EV_P_ ev_periodic *w) 4221ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
3299{ 4222{
3300 clear_pending (EV_A_ (W)w); 4223 clear_pending (EV_A_ (W)w);
3301 if (expect_false (!ev_is_active (w))) 4224 if (ecb_expect_false (!ev_is_active (w)))
3302 return; 4225 return;
3303 4226
3304 EV_FREQUENT_CHECK; 4227 EV_FREQUENT_CHECK;
3305 4228
3306 { 4229 {
… …
3308 4231
3309 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4232 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
3310 4233
3311 --periodiccnt; 4234 --periodiccnt;
3312 4235
3313 if (expect_true (active < periodiccnt + HEAP0)) 4236 if (ecb_expect_true (active < periodiccnt + HEAP0))
3314 { 4237 {
3315 periodics [active] = periodics [periodiccnt + HEAP0]; 4238 periodics [active] = periodics [periodiccnt + HEAP0];
3316 adjustheap (periodics, periodiccnt, active); 4239 adjustheap (periodics, periodiccnt, active);
3317 } 4240 }
3318 } 4241 }
… …
3320 ev_stop (EV_A_ (W)w); 4243 ev_stop (EV_A_ (W)w);
3321 4244
3322 EV_FREQUENT_CHECK; 4245 EV_FREQUENT_CHECK;
3323} 4246}
3324 4247
3325void noinline 4248ecb_noinline
4249void
3326ev_periodic_again (EV_P_ ev_periodic *w) 4250ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
3327{ 4251{
3328 /* TODO: use adjustheap and recalculation */ 4252 /* TODO: use adjustheap and recalculation */
3329 ev_periodic_stop (EV_A_ w); 4253 ev_periodic_stop (EV_A_ w);
3330 ev_periodic_start (EV_A_ w); 4254 ev_periodic_start (EV_A_ w);
3331} 4255}
… …
3335# define SA_RESTART 0 4259# define SA_RESTART 0
3336#endif 4260#endif
3337 4261
3338#if EV_SIGNAL_ENABLE 4262#if EV_SIGNAL_ENABLE
3339 4263
3340void noinline 4264ecb_noinline
4265void
3341ev_signal_start (EV_P_ ev_signal *w) 4266ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
3342{ 4267{
3343 if (expect_false (ev_is_active (w))) 4268 if (ecb_expect_false (ev_is_active (w)))
3344 return; 4269 return;
3345 4270
3346 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4271 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
3347 4272
3348#if EV_MULTIPLICITY 4273#if EV_MULTIPLICITY
3349 assert (("libev: a signal must not be attached to two different loops", 4274 assert (("libev: a signal must not be attached to two different loops",
3350 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4275 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3351 4276
3352 signals [w->signum - 1].loop = EV_A; 4277 signals [w->signum - 1].loop = EV_A;
4278 ECB_MEMORY_FENCE_RELEASE;
3353#endif 4279#endif
3354 4280
3355 EV_FREQUENT_CHECK; 4281 EV_FREQUENT_CHECK;
3356 4282
3357#if EV_USE_SIGNALFD 4283#if EV_USE_SIGNALFD
… …
3416 } 4342 }
3417 4343
3418 EV_FREQUENT_CHECK; 4344 EV_FREQUENT_CHECK;
3419} 4345}
3420 4346
3421void noinline 4347ecb_noinline
4348void
3422ev_signal_stop (EV_P_ ev_signal *w) 4349ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
3423{ 4350{
3424 clear_pending (EV_A_ (W)w); 4351 clear_pending (EV_A_ (W)w);
3425 if (expect_false (!ev_is_active (w))) 4352 if (ecb_expect_false (!ev_is_active (w)))
3426 return; 4353 return;
3427 4354
3428 EV_FREQUENT_CHECK; 4355 EV_FREQUENT_CHECK;
3429 4356
3430 wlist_del (&signals [w->signum - 1].head, (WL)w); 4357 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
3458#endif 4385#endif
3459 4386
3460#if EV_CHILD_ENABLE 4387#if EV_CHILD_ENABLE
3461 4388
3462void 4389void
3463ev_child_start (EV_P_ ev_child *w) 4390ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
3464{ 4391{
3465#if EV_MULTIPLICITY 4392#if EV_MULTIPLICITY
3466 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4393 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3467#endif 4394#endif
3468 if (expect_false (ev_is_active (w))) 4395 if (ecb_expect_false (ev_is_active (w)))
3469 return; 4396 return;
3470 4397
3471 EV_FREQUENT_CHECK; 4398 EV_FREQUENT_CHECK;
3472 4399
3473 ev_start (EV_A_ (W)w, 1); 4400 ev_start (EV_A_ (W)w, 1);
… …
3475 4402
3476 EV_FREQUENT_CHECK; 4403 EV_FREQUENT_CHECK;
3477} 4404}
3478 4405
3479void 4406void
3480ev_child_stop (EV_P_ ev_child *w) 4407ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
3481{ 4408{
3482 clear_pending (EV_A_ (W)w); 4409 clear_pending (EV_A_ (W)w);
3483 if (expect_false (!ev_is_active (w))) 4410 if (ecb_expect_false (!ev_is_active (w)))
3484 return; 4411 return;
3485 4412
3486 EV_FREQUENT_CHECK; 4413 EV_FREQUENT_CHECK;
3487 4414
3488 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); 4415 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
… …
3502 4429
3503#define DEF_STAT_INTERVAL 5.0074891 4430#define DEF_STAT_INTERVAL 5.0074891
3504#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4431#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3505#define MIN_STAT_INTERVAL 0.1074891 4432#define MIN_STAT_INTERVAL 0.1074891
3506 4433
3507static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4434ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
3508 4435
3509#if EV_USE_INOTIFY 4436#if EV_USE_INOTIFY
3510 4437
3511/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4438/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3512# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4439# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3513 4440
3514static void noinline 4441ecb_noinline
4442static void
3515infy_add (EV_P_ ev_stat *w) 4443infy_add (EV_P_ ev_stat *w)
3516{ 4444{
3517 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); 4445 w->wd = inotify_add_watch (fs_fd, w->path,
4446 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4447 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4448 | IN_DONT_FOLLOW | IN_MASK_ADD);
3518 4449
3519 if (w->wd >= 0) 4450 if (w->wd >= 0)
3520 { 4451 {
3521 struct statfs sfs; 4452 struct statfs sfs;
3522 4453
… …
3526 4457
3527 if (!fs_2625) 4458 if (!fs_2625)
3528 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4459 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3529 else if (!statfs (w->path, &sfs) 4460 else if (!statfs (w->path, &sfs)
3530 && (sfs.f_type == 0x1373 /* devfs */ 4461 && (sfs.f_type == 0x1373 /* devfs */
4462 || sfs.f_type == 0x4006 /* fat */
4463 || sfs.f_type == 0x4d44 /* msdos */
3531 || sfs.f_type == 0xEF53 /* ext2/3 */ 4464 || sfs.f_type == 0xEF53 /* ext2/3 */
4465 || sfs.f_type == 0x72b6 /* jffs2 */
4466 || sfs.f_type == 0x858458f6 /* ramfs */
4467 || sfs.f_type == 0x5346544e /* ntfs */
3532 || sfs.f_type == 0x3153464a /* jfs */ 4468 || sfs.f_type == 0x3153464a /* jfs */
4469 || sfs.f_type == 0x9123683e /* btrfs */
3533 || sfs.f_type == 0x52654973 /* reiser3 */ 4470 || sfs.f_type == 0x52654973 /* reiser3 */
3534 || sfs.f_type == 0x01021994 /* tempfs */ 4471 || sfs.f_type == 0x01021994 /* tmpfs */
3535 || sfs.f_type == 0x58465342 /* xfs */)) 4472 || sfs.f_type == 0x58465342 /* xfs */))
3536 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4473 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3537 else 4474 else
3538 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4475 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3539 } 4476 }
… …
3574 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4511 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3575 ev_timer_again (EV_A_ &w->timer); 4512 ev_timer_again (EV_A_ &w->timer);
3576 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4513 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3577} 4514}
3578 4515
3579static void noinline 4516ecb_noinline
4517static void
3580infy_del (EV_P_ ev_stat *w) 4518infy_del (EV_P_ ev_stat *w)
3581{ 4519{
3582 int slot; 4520 int slot;
3583 int wd = w->wd; 4521 int wd = w->wd;
3584 4522
… …
3591 4529
3592 /* remove this watcher, if others are watching it, they will rearm */ 4530 /* remove this watcher, if others are watching it, they will rearm */
3593 inotify_rm_watch (fs_fd, wd); 4531 inotify_rm_watch (fs_fd, wd);
3594} 4532}
3595 4533
3596static void noinline 4534ecb_noinline
4535static void
3597infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4536infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3598{ 4537{
3599 if (slot < 0) 4538 if (slot < 0)
3600 /* overflow, need to check for all hash slots */ 4539 /* overflow, need to check for all hash slots */
3601 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4540 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3637 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4576 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3638 ofs += sizeof (struct inotify_event) + ev->len; 4577 ofs += sizeof (struct inotify_event) + ev->len;
3639 } 4578 }
3640} 4579}
3641 4580
3642inline_size void ecb_cold 4581inline_size ecb_cold
4582void
3643ev_check_2625 (EV_P) 4583ev_check_2625 (EV_P)
3644{ 4584{
3645 /* kernels < 2.6.25 are borked 4585 /* kernels < 2.6.25 are borked
3646 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4586 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3647 */ 4587 */
… …
3652} 4592}
3653 4593
3654inline_size int 4594inline_size int
3655infy_newfd (void) 4595infy_newfd (void)
3656{ 4596{
3657#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4597#if defined IN_CLOEXEC && defined IN_NONBLOCK
3658 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4598 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3659 if (fd >= 0) 4599 if (fd >= 0)
3660 return fd; 4600 return fd;
3661#endif 4601#endif
3662 return inotify_init (); 4602 return inotify_init ();
… …
3737#else 4677#else
3738# define EV_LSTAT(p,b) lstat (p, b) 4678# define EV_LSTAT(p,b) lstat (p, b)
3739#endif 4679#endif
3740 4680
3741void 4681void
3742ev_stat_stat (EV_P_ ev_stat *w) 4682ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3743{ 4683{
3744 if (lstat (w->path, &w->attr) < 0) 4684 if (lstat (w->path, &w->attr) < 0)
3745 w->attr.st_nlink = 0; 4685 w->attr.st_nlink = 0;
3746 else if (!w->attr.st_nlink) 4686 else if (!w->attr.st_nlink)
3747 w->attr.st_nlink = 1; 4687 w->attr.st_nlink = 1;
3748} 4688}
3749 4689
3750static void noinline 4690ecb_noinline
4691static void
3751stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4692stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3752{ 4693{
3753 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4694 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3754 4695
3755 ev_statdata prev = w->attr; 4696 ev_statdata prev = w->attr;
… …
3786 ev_feed_event (EV_A_ w, EV_STAT); 4727 ev_feed_event (EV_A_ w, EV_STAT);
3787 } 4728 }
3788} 4729}
3789 4730
3790void 4731void
3791ev_stat_start (EV_P_ ev_stat *w) 4732ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3792{ 4733{
3793 if (expect_false (ev_is_active (w))) 4734 if (ecb_expect_false (ev_is_active (w)))
3794 return; 4735 return;
3795 4736
3796 ev_stat_stat (EV_A_ w); 4737 ev_stat_stat (EV_A_ w);
3797 4738
3798 if (w->interval < MIN_STAT_INTERVAL && w->interval) 4739 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
3817 4758
3818 EV_FREQUENT_CHECK; 4759 EV_FREQUENT_CHECK;
3819} 4760}
3820 4761
3821void 4762void
3822ev_stat_stop (EV_P_ ev_stat *w) 4763ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3823{ 4764{
3824 clear_pending (EV_A_ (W)w); 4765 clear_pending (EV_A_ (W)w);
3825 if (expect_false (!ev_is_active (w))) 4766 if (ecb_expect_false (!ev_is_active (w)))
3826 return; 4767 return;
3827 4768
3828 EV_FREQUENT_CHECK; 4769 EV_FREQUENT_CHECK;
3829 4770
3830#if EV_USE_INOTIFY 4771#if EV_USE_INOTIFY
… …
3843} 4784}
3844#endif 4785#endif
3845 4786
3846#if EV_IDLE_ENABLE 4787#if EV_IDLE_ENABLE
3847void 4788void
3848ev_idle_start (EV_P_ ev_idle *w) 4789ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3849{ 4790{
3850 if (expect_false (ev_is_active (w))) 4791 if (ecb_expect_false (ev_is_active (w)))
3851 return; 4792 return;
3852 4793
3853 pri_adjust (EV_A_ (W)w); 4794 pri_adjust (EV_A_ (W)w);
3854 4795
3855 EV_FREQUENT_CHECK; 4796 EV_FREQUENT_CHECK;
… …
3858 int active = ++idlecnt [ABSPRI (w)]; 4799 int active = ++idlecnt [ABSPRI (w)];
3859 4800
3860 ++idleall; 4801 ++idleall;
3861 ev_start (EV_A_ (W)w, active); 4802 ev_start (EV_A_ (W)w, active);
3862 4803
3863 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4804 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
3864 idles [ABSPRI (w)][active - 1] = w; 4805 idles [ABSPRI (w)][active - 1] = w;
3865 } 4806 }
3866 4807
3867 EV_FREQUENT_CHECK; 4808 EV_FREQUENT_CHECK;
3868} 4809}
3869 4810
3870void 4811void
3871ev_idle_stop (EV_P_ ev_idle *w) 4812ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3872{ 4813{
3873 clear_pending (EV_A_ (W)w); 4814 clear_pending (EV_A_ (W)w);
3874 if (expect_false (!ev_is_active (w))) 4815 if (ecb_expect_false (!ev_is_active (w)))
3875 return; 4816 return;
3876 4817
3877 EV_FREQUENT_CHECK; 4818 EV_FREQUENT_CHECK;
3878 4819
3879 { 4820 {
… …
3890} 4831}
3891#endif 4832#endif
3892 4833
3893#if EV_PREPARE_ENABLE 4834#if EV_PREPARE_ENABLE
3894void 4835void
3895ev_prepare_start (EV_P_ ev_prepare *w) 4836ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3896{ 4837{
3897 if (expect_false (ev_is_active (w))) 4838 if (ecb_expect_false (ev_is_active (w)))
3898 return; 4839 return;
3899 4840
3900 EV_FREQUENT_CHECK; 4841 EV_FREQUENT_CHECK;
3901 4842
3902 ev_start (EV_A_ (W)w, ++preparecnt); 4843 ev_start (EV_A_ (W)w, ++preparecnt);
3903 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4844 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3904 prepares [preparecnt - 1] = w; 4845 prepares [preparecnt - 1] = w;
3905 4846
3906 EV_FREQUENT_CHECK; 4847 EV_FREQUENT_CHECK;
3907} 4848}
3908 4849
3909void 4850void
3910ev_prepare_stop (EV_P_ ev_prepare *w) 4851ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3911{ 4852{
3912 clear_pending (EV_A_ (W)w); 4853 clear_pending (EV_A_ (W)w);
3913 if (expect_false (!ev_is_active (w))) 4854 if (ecb_expect_false (!ev_is_active (w)))
3914 return; 4855 return;
3915 4856
3916 EV_FREQUENT_CHECK; 4857 EV_FREQUENT_CHECK;
3917 4858
3918 { 4859 {
… …
3928} 4869}
3929#endif 4870#endif
3930 4871
3931#if EV_CHECK_ENABLE 4872#if EV_CHECK_ENABLE
3932void 4873void
3933ev_check_start (EV_P_ ev_check *w) 4874ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3934{ 4875{
3935 if (expect_false (ev_is_active (w))) 4876 if (ecb_expect_false (ev_is_active (w)))
3936 return; 4877 return;
3937 4878
3938 EV_FREQUENT_CHECK; 4879 EV_FREQUENT_CHECK;
3939 4880
3940 ev_start (EV_A_ (W)w, ++checkcnt); 4881 ev_start (EV_A_ (W)w, ++checkcnt);
3941 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4882 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
3942 checks [checkcnt - 1] = w; 4883 checks [checkcnt - 1] = w;
3943 4884
3944 EV_FREQUENT_CHECK; 4885 EV_FREQUENT_CHECK;
3945} 4886}
3946 4887
3947void 4888void
3948ev_check_stop (EV_P_ ev_check *w) 4889ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
3949{ 4890{
3950 clear_pending (EV_A_ (W)w); 4891 clear_pending (EV_A_ (W)w);
3951 if (expect_false (!ev_is_active (w))) 4892 if (ecb_expect_false (!ev_is_active (w)))
3952 return; 4893 return;
3953 4894
3954 EV_FREQUENT_CHECK; 4895 EV_FREQUENT_CHECK;
3955 4896
3956 { 4897 {
… …
3965 EV_FREQUENT_CHECK; 4906 EV_FREQUENT_CHECK;
3966} 4907}
3967#endif 4908#endif
3968 4909
3969#if EV_EMBED_ENABLE 4910#if EV_EMBED_ENABLE
3970void noinline 4911ecb_noinline
4912void
3971ev_embed_sweep (EV_P_ ev_embed *w) 4913ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3972{ 4914{
3973 ev_run (w->other, EVRUN_NOWAIT); 4915 ev_run (w->other, EVRUN_NOWAIT);
3974} 4916}
3975 4917
3976static void 4918static void
… …
4024 ev_idle_stop (EV_A_ idle); 4966 ev_idle_stop (EV_A_ idle);
4025} 4967}
4026#endif 4968#endif
4027 4969
4028void 4970void
4029ev_embed_start (EV_P_ ev_embed *w) 4971ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
4030{ 4972{
4031 if (expect_false (ev_is_active (w))) 4973 if (ecb_expect_false (ev_is_active (w)))
4032 return; 4974 return;
4033 4975
4034 { 4976 {
4035 EV_P = w->other; 4977 EV_P = w->other;
4036 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4978 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
… …
4055 4997
4056 EV_FREQUENT_CHECK; 4998 EV_FREQUENT_CHECK;
4057} 4999}
4058 5000
4059void 5001void
4060ev_embed_stop (EV_P_ ev_embed *w) 5002ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
4061{ 5003{
4062 clear_pending (EV_A_ (W)w); 5004 clear_pending (EV_A_ (W)w);
4063 if (expect_false (!ev_is_active (w))) 5005 if (ecb_expect_false (!ev_is_active (w)))
4064 return; 5006 return;
4065 5007
4066 EV_FREQUENT_CHECK; 5008 EV_FREQUENT_CHECK;
4067 5009
4068 ev_io_stop (EV_A_ &w->io); 5010 ev_io_stop (EV_A_ &w->io);
… …
4075} 5017}
4076#endif 5018#endif
4077 5019
4078#if EV_FORK_ENABLE 5020#if EV_FORK_ENABLE
4079void 5021void
4080ev_fork_start (EV_P_ ev_fork *w) 5022ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
4081{ 5023{
4082 if (expect_false (ev_is_active (w))) 5024 if (ecb_expect_false (ev_is_active (w)))
4083 return; 5025 return;
4084 5026
4085 EV_FREQUENT_CHECK; 5027 EV_FREQUENT_CHECK;
4086 5028
4087 ev_start (EV_A_ (W)w, ++forkcnt); 5029 ev_start (EV_A_ (W)w, ++forkcnt);
4088 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5030 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
4089 forks [forkcnt - 1] = w; 5031 forks [forkcnt - 1] = w;
4090 5032
4091 EV_FREQUENT_CHECK; 5033 EV_FREQUENT_CHECK;
4092} 5034}
4093 5035
4094void 5036void
4095ev_fork_stop (EV_P_ ev_fork *w) 5037ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
4096{ 5038{
4097 clear_pending (EV_A_ (W)w); 5039 clear_pending (EV_A_ (W)w);
4098 if (expect_false (!ev_is_active (w))) 5040 if (ecb_expect_false (!ev_is_active (w)))
4099 return; 5041 return;
4100 5042
4101 EV_FREQUENT_CHECK; 5043 EV_FREQUENT_CHECK;
4102 5044
4103 { 5045 {
… …
4113} 5055}
4114#endif 5056#endif
4115 5057
4116#if EV_CLEANUP_ENABLE 5058#if EV_CLEANUP_ENABLE
4117void 5059void
4118ev_cleanup_start (EV_P_ ev_cleanup *w) 5060ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4119{ 5061{
4120 if (expect_false (ev_is_active (w))) 5062 if (ecb_expect_false (ev_is_active (w)))
4121 return; 5063 return;
4122 5064
4123 EV_FREQUENT_CHECK; 5065 EV_FREQUENT_CHECK;
4124 5066
4125 ev_start (EV_A_ (W)w, ++cleanupcnt); 5067 ev_start (EV_A_ (W)w, ++cleanupcnt);
4126 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 5068 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
4127 cleanups [cleanupcnt - 1] = w; 5069 cleanups [cleanupcnt - 1] = w;
4128 5070
4129 /* cleanup watchers should never keep a refcount on the loop */ 5071 /* cleanup watchers should never keep a refcount on the loop */
4130 ev_unref (EV_A); 5072 ev_unref (EV_A);
4131 EV_FREQUENT_CHECK; 5073 EV_FREQUENT_CHECK;
4132} 5074}
4133 5075
4134void 5076void
4135ev_cleanup_stop (EV_P_ ev_cleanup *w) 5077ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4136{ 5078{
4137 clear_pending (EV_A_ (W)w); 5079 clear_pending (EV_A_ (W)w);
4138 if (expect_false (!ev_is_active (w))) 5080 if (ecb_expect_false (!ev_is_active (w)))
4139 return; 5081 return;
4140 5082
4141 EV_FREQUENT_CHECK; 5083 EV_FREQUENT_CHECK;
4142 ev_ref (EV_A); 5084 ev_ref (EV_A);
4143 5085
… …
4154} 5096}
4155#endif 5097#endif
4156 5098
4157#if EV_ASYNC_ENABLE 5099#if EV_ASYNC_ENABLE
4158void 5100void
4159ev_async_start (EV_P_ ev_async *w) 5101ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4160{ 5102{
4161 if (expect_false (ev_is_active (w))) 5103 if (ecb_expect_false (ev_is_active (w)))
4162 return; 5104 return;
4163 5105
4164 w->sent = 0; 5106 w->sent = 0;
4165 5107
4166 evpipe_init (EV_A); 5108 evpipe_init (EV_A);
4167 5109
4168 EV_FREQUENT_CHECK; 5110 EV_FREQUENT_CHECK;
4169 5111
4170 ev_start (EV_A_ (W)w, ++asynccnt); 5112 ev_start (EV_A_ (W)w, ++asynccnt);
4171 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5113 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
4172 asyncs [asynccnt - 1] = w; 5114 asyncs [asynccnt - 1] = w;
4173 5115
4174 EV_FREQUENT_CHECK; 5116 EV_FREQUENT_CHECK;
4175} 5117}
4176 5118
4177void 5119void
4178ev_async_stop (EV_P_ ev_async *w) 5120ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4179{ 5121{
4180 clear_pending (EV_A_ (W)w); 5122 clear_pending (EV_A_ (W)w);
4181 if (expect_false (!ev_is_active (w))) 5123 if (ecb_expect_false (!ev_is_active (w)))
4182 return; 5124 return;
4183 5125
4184 EV_FREQUENT_CHECK; 5126 EV_FREQUENT_CHECK;
4185 5127
4186 { 5128 {
… …
4194 5136
4195 EV_FREQUENT_CHECK; 5137 EV_FREQUENT_CHECK;
4196} 5138}
4197 5139
4198void 5140void
4199ev_async_send (EV_P_ ev_async *w) 5141ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
4200{ 5142{
4201 w->sent = 1; 5143 w->sent = 1;
4202 evpipe_write (EV_A_ &async_pending); 5144 evpipe_write (EV_A_ &async_pending);
4203} 5145}
4204#endif 5146#endif
… …
4241 5183
4242 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5184 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
4243} 5185}
4244 5186
4245void 5187void
4246ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5188ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
4247{ 5189{
4248 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5190 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
4249
4250 if (expect_false (!once))
4251 {
4252 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
4253 return;
4254 }
4255 5191
4256 once->cb = cb; 5192 once->cb = cb;
4257 once->arg = arg; 5193 once->arg = arg;
4258 5194
4259 ev_init (&once->io, once_cb_io); 5195 ev_init (&once->io, once_cb_io);
… …
4272} 5208}
4273 5209
4274/*****************************************************************************/ 5210/*****************************************************************************/
4275 5211
4276#if EV_WALK_ENABLE 5212#if EV_WALK_ENABLE
4277void ecb_cold 5213ecb_cold
5214void
4278ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5215ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
4279{ 5216{
4280 int i, j; 5217 int i, j;
4281 ev_watcher_list *wl, *wn; 5218 ev_watcher_list *wl, *wn;
4282 5219
4283 if (types & (EV_IO | EV_EMBED)) 5220 if (types & (EV_IO | EV_EMBED))
… …
4389 5326
4390#if EV_MULTIPLICITY 5327#if EV_MULTIPLICITY
4391 #include "ev_wrap.h" 5328 #include "ev_wrap.h"
4392#endif 5329#endif
4393 5330
4394EV_CPP(})
4395

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