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Comparing libev/ev.c (file contents):
Revision 1.401 by root, Tue Dec 20 04:08:35 2011 UTC vs.
Revision 1.502 by root, Tue Jul 2 06:07:54 2019 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007-2019 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
… …
43# include EV_CONFIG_H 43# include EV_CONFIG_H
44# else 44# else
45# include "config.h" 45# include "config.h"
46# endif 46# endif
47 47
48#if HAVE_FLOOR 48# if HAVE_FLOOR
49# ifndef EV_USE_FLOOR 49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1 50# define EV_USE_FLOOR 1
51# endif
51# endif 52# endif
52#endif
53 53
54# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
55# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
56# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
57# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
… …
59# endif 59# endif
60# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
62# endif 62# endif
63# endif 63# endif
64# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
65# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
66# endif 66# endif
67 67
68# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
69# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
113# define EV_USE_EPOLL EV_FEATURE_BACKENDS 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
114# endif 114# endif
115# else 115# else
116# undef EV_USE_EPOLL 116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0 117# define EV_USE_EPOLL 0
118# endif
119
120# if HAVE_LINUX_AIO_ABI_H
121# ifndef EV_USE_LINUXAIO
122# define EV_USE_LINUXAIO EV_FEATURE_BACKENDS
123# endif
124# else
125# undef EV_USE_LINUXAIO
126# define EV_USE_LINUXAIO 0
118# endif 127# endif
119 128
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H 129# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
121# ifndef EV_USE_KQUEUE 130# ifndef EV_USE_KQUEUE
122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS 131# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
… …
162# define EV_USE_EVENTFD 0 171# define EV_USE_EVENTFD 0
163# endif 172# endif
164 173
165#endif 174#endif
166 175
176/* OS X, in its infinite idiocy, actually HARDCODES
177 * a limit of 1024 into their select. Where people have brains,
178 * OS X engineers apparently have a vacuum. Or maybe they were
179 * ordered to have a vacuum, or they do anything for money.
180 * This might help. Or not.
181 * Note that this must be defined early, as other include files
182 * will rely on this define as well.
183 */
184#define _DARWIN_UNLIMITED_SELECT 1
185
167#include <stdlib.h> 186#include <stdlib.h>
168#include <string.h> 187#include <string.h>
169#include <fcntl.h> 188#include <fcntl.h>
170#include <stddef.h> 189#include <stddef.h>
171 190
… …
181 200
182#ifdef EV_H 201#ifdef EV_H
183# include EV_H 202# include EV_H
184#else 203#else
185# include "ev.h" 204# include "ev.h"
205#endif
206
207#if EV_NO_THREADS
208# undef EV_NO_SMP
209# define EV_NO_SMP 1
210# undef ECB_NO_THREADS
211# define ECB_NO_THREADS 1
212#endif
213#if EV_NO_SMP
214# undef EV_NO_SMP
215# define ECB_NO_SMP 1
186#endif 216#endif
187 217
188#ifndef _WIN32 218#ifndef _WIN32
189# include <sys/time.h> 219# include <sys/time.h>
190# include <sys/wait.h> 220# include <sys/wait.h>
191# include <unistd.h> 221# include <unistd.h>
192#else 222#else
193# include <io.h> 223# include <io.h>
194# define WIN32_LEAN_AND_MEAN 224# define WIN32_LEAN_AND_MEAN
225# include <winsock2.h>
195# include <windows.h> 226# include <windows.h>
196# ifndef EV_SELECT_IS_WINSOCKET 227# ifndef EV_SELECT_IS_WINSOCKET
197# define EV_SELECT_IS_WINSOCKET 1 228# define EV_SELECT_IS_WINSOCKET 1
198# endif 229# endif
199# undef EV_AVOID_STDIO 230# undef EV_AVOID_STDIO
200#endif 231#endif
201 232
202/* OS X, in its infinite idiocy, actually HARDCODES
203 * a limit of 1024 into their select. Where people have brains,
204 * OS X engineers apparently have a vacuum. Or maybe they were
205 * ordered to have a vacuum, or they do anything for money.
206 * This might help. Or not.
207 */
208#define _DARWIN_UNLIMITED_SELECT 1
209
210/* this block tries to deduce configuration from header-defined symbols and defaults */ 233/* this block tries to deduce configuration from header-defined symbols and defaults */
211 234
212/* try to deduce the maximum number of signals on this platform */ 235/* try to deduce the maximum number of signals on this platform */
213#if defined (EV_NSIG) 236#if defined EV_NSIG
214/* use what's provided */ 237/* use what's provided */
215#elif defined (NSIG) 238#elif defined NSIG
216# define EV_NSIG (NSIG) 239# define EV_NSIG (NSIG)
217#elif defined(_NSIG) 240#elif defined _NSIG
218# define EV_NSIG (_NSIG) 241# define EV_NSIG (_NSIG)
219#elif defined (SIGMAX) 242#elif defined SIGMAX
220# define EV_NSIG (SIGMAX+1) 243# define EV_NSIG (SIGMAX+1)
221#elif defined (SIG_MAX) 244#elif defined SIG_MAX
222# define EV_NSIG (SIG_MAX+1) 245# define EV_NSIG (SIG_MAX+1)
223#elif defined (_SIG_MAX) 246#elif defined _SIG_MAX
224# define EV_NSIG (_SIG_MAX+1) 247# define EV_NSIG (_SIG_MAX+1)
225#elif defined (MAXSIG) 248#elif defined MAXSIG
226# define EV_NSIG (MAXSIG+1) 249# define EV_NSIG (MAXSIG+1)
227#elif defined (MAX_SIG) 250#elif defined MAX_SIG
228# define EV_NSIG (MAX_SIG+1) 251# define EV_NSIG (MAX_SIG+1)
229#elif defined (SIGARRAYSIZE) 252#elif defined SIGARRAYSIZE
230# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 253# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
231#elif defined (_sys_nsig) 254#elif defined _sys_nsig
232# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 255# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
233#else 256#else
234# error "unable to find value for NSIG, please report" 257# define EV_NSIG (8 * sizeof (sigset_t) + 1)
235/* to make it compile regardless, just remove the above line, */
236/* but consider reporting it, too! :) */
237# define EV_NSIG 65
238#endif 258#endif
239 259
240#ifndef EV_USE_FLOOR 260#ifndef EV_USE_FLOOR
241# define EV_USE_FLOOR 0 261# define EV_USE_FLOOR 0
242#endif 262#endif
243 263
244#ifndef EV_USE_CLOCK_SYSCALL 264#ifndef EV_USE_CLOCK_SYSCALL
245# if __linux && __GLIBC__ >= 2 265# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
246# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 266# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
247# else 267# else
248# define EV_USE_CLOCK_SYSCALL 0 268# define EV_USE_CLOCK_SYSCALL 0
249# endif 269# endif
250#endif 270#endif
251 271
272#if !(_POSIX_TIMERS > 0)
273# ifndef EV_USE_MONOTONIC
274# define EV_USE_MONOTONIC 0
275# endif
276# ifndef EV_USE_REALTIME
277# define EV_USE_REALTIME 0
278# endif
279#endif
280
252#ifndef EV_USE_MONOTONIC 281#ifndef EV_USE_MONOTONIC
253# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 282# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
254# define EV_USE_MONOTONIC EV_FEATURE_OS 283# define EV_USE_MONOTONIC EV_FEATURE_OS
255# else 284# else
256# define EV_USE_MONOTONIC 0 285# define EV_USE_MONOTONIC 0
257# endif 286# endif
258#endif 287#endif
… …
295 324
296#ifndef EV_USE_PORT 325#ifndef EV_USE_PORT
297# define EV_USE_PORT 0 326# define EV_USE_PORT 0
298#endif 327#endif
299 328
329#ifndef EV_USE_LINUXAIO
330# if __linux /* libev currently assumes linux/aio_abi.h is always available on linux */
331# define EV_USE_LINUXAIO 1
332# else
333# define EV_USE_LINUXAIO 0
334# endif
335#endif
336
337#ifndef EV_USE_IOURING
338# if __linux
339# define EV_USE_IOURING 0
340# else
341# define EV_USE_IOURING 0
342# endif
343#endif
344
300#ifndef EV_USE_INOTIFY 345#ifndef EV_USE_INOTIFY
301# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 346# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
302# define EV_USE_INOTIFY EV_FEATURE_OS 347# define EV_USE_INOTIFY EV_FEATURE_OS
303# else 348# else
304# define EV_USE_INOTIFY 0 349# define EV_USE_INOTIFY 0
… …
345 390
346#ifndef EV_HEAP_CACHE_AT 391#ifndef EV_HEAP_CACHE_AT
347# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 392# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
348#endif 393#endif
349 394
395#ifdef __ANDROID__
396/* supposedly, android doesn't typedef fd_mask */
397# undef EV_USE_SELECT
398# define EV_USE_SELECT 0
399/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
400# undef EV_USE_CLOCK_SYSCALL
401# define EV_USE_CLOCK_SYSCALL 0
402#endif
403
404/* aix's poll.h seems to cause lots of trouble */
405#ifdef _AIX
406/* AIX has a completely broken poll.h header */
407# undef EV_USE_POLL
408# define EV_USE_POLL 0
409#endif
410
350/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 411/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
351/* which makes programs even slower. might work on other unices, too. */ 412/* which makes programs even slower. might work on other unices, too. */
352#if EV_USE_CLOCK_SYSCALL 413#if EV_USE_CLOCK_SYSCALL
353# include <syscall.h> 414# include <sys/syscall.h>
354# ifdef SYS_clock_gettime 415# ifdef SYS_clock_gettime
355# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 416# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
356# undef EV_USE_MONOTONIC 417# undef EV_USE_MONOTONIC
357# define EV_USE_MONOTONIC 1 418# define EV_USE_MONOTONIC 1
419# define EV_NEED_SYSCALL 1
358# else 420# else
359# undef EV_USE_CLOCK_SYSCALL 421# undef EV_USE_CLOCK_SYSCALL
360# define EV_USE_CLOCK_SYSCALL 0 422# define EV_USE_CLOCK_SYSCALL 0
361# endif 423# endif
362#endif 424#endif
363 425
364/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 426/* this block fixes any misconfiguration where we know we run into trouble otherwise */
365 427
366#ifdef _AIX
367/* AIX has a completely broken poll.h header */
368# undef EV_USE_POLL
369# define EV_USE_POLL 0
370#endif
371
372#ifndef CLOCK_MONOTONIC 428#ifndef CLOCK_MONOTONIC
373# undef EV_USE_MONOTONIC 429# undef EV_USE_MONOTONIC
374# define EV_USE_MONOTONIC 0 430# define EV_USE_MONOTONIC 0
375#endif 431#endif
376 432
… …
384# define EV_USE_INOTIFY 0 440# define EV_USE_INOTIFY 0
385#endif 441#endif
386 442
387#if !EV_USE_NANOSLEEP 443#if !EV_USE_NANOSLEEP
388/* hp-ux has it in sys/time.h, which we unconditionally include above */ 444/* hp-ux has it in sys/time.h, which we unconditionally include above */
389# if !defined(_WIN32) && !defined(__hpux) 445# if !defined _WIN32 && !defined __hpux
390# include <sys/select.h> 446# include <sys/select.h>
447# endif
448#endif
449
450#if EV_USE_LINUXAIO
451# include <sys/syscall.h>
452# if SYS_io_getevents && EV_USE_EPOLL /* linuxaio backend requires epoll backend */
453# define EV_NEED_SYSCALL 1
454# else
455# undef EV_USE_LINUXAIO
456# define EV_USE_LINUXAIO 0
457# endif
458#endif
459
460#if EV_USE_IOURING
461# include <sys/syscall.h>
462# if !__alpha && !SYS_io_uring_setup
463# define SYS_io_uring_setup 425
464# define SYS_io_uring_enter 426
465# define SYS_io_uring_wregister 427
466# endif
467# if SYS_io_uring_setup && EV_USE_EPOLL /* iouring backend requires epoll backend */
468# define EV_NEED_SYSCALL 1
469# else
470# undef EV_USE_IOURING
471# define EV_USE_IOURING 0
391# endif 472# endif
392#endif 473#endif
393 474
394#if EV_USE_INOTIFY 475#if EV_USE_INOTIFY
395# include <sys/statfs.h> 476# include <sys/statfs.h>
… …
397/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 478/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
398# ifndef IN_DONT_FOLLOW 479# ifndef IN_DONT_FOLLOW
399# undef EV_USE_INOTIFY 480# undef EV_USE_INOTIFY
400# define EV_USE_INOTIFY 0 481# define EV_USE_INOTIFY 0
401# endif 482# endif
402#endif
403
404#if EV_SELECT_IS_WINSOCKET
405# include <winsock.h>
406#endif 483#endif
407 484
408#if EV_USE_EVENTFD 485#if EV_USE_EVENTFD
409/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 486/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
410# include <stdint.h> 487# include <stdint.h>
… …
441 uint32_t ssi_signo; 518 uint32_t ssi_signo;
442 char pad[128 - sizeof (uint32_t)]; 519 char pad[128 - sizeof (uint32_t)];
443}; 520};
444#endif 521#endif
445 522
446/**/ 523/*****************************************************************************/
447 524
448#if EV_VERIFY >= 3 525#if EV_VERIFY >= 3
449# define EV_FREQUENT_CHECK ev_verify (EV_A) 526# define EV_FREQUENT_CHECK ev_verify (EV_A)
450#else 527#else
451# define EV_FREQUENT_CHECK do { } while (0) 528# define EV_FREQUENT_CHECK do { } while (0)
… …
456 * This value is good at least till the year 4000. 533 * This value is good at least till the year 4000.
457 */ 534 */
458#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */ 535#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
459/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */ 536/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
460 537
461#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 538#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
462#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 539#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
540
541/* find a portable timestamp that is "alawys" 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 large than 32 bit, but and maybe the unlikely loating point time_t */
544#define EV_TSTAMP_HUGE \
545 (sizeof (time_t) >= 8 ? 10000000000000. \
546 : 0 < (time_t)4294967295 ? 4294967295. \
547 : 2147483647.) \
463 548
464#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) 549#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
465#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0) 550#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
466 551
467/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ 552/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
468/* ECB.H BEGIN */ 553/* ECB.H BEGIN */
469/* 554/*
470 * libecb - http://software.schmorp.de/pkg/libecb 555 * libecb - http://software.schmorp.de/pkg/libecb
471 * 556 *
472 * Copyright (©) 2009-2011 Marc Alexander Lehmann <libecb@schmorp.de> 557 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
473 * Copyright (©) 2011 Emanuele Giaquinta 558 * Copyright (©) 2011 Emanuele Giaquinta
474 * All rights reserved. 559 * All rights reserved.
475 * 560 *
476 * Redistribution and use in source and binary forms, with or without modifica- 561 * Redistribution and use in source and binary forms, with or without modifica-
477 * tion, are permitted provided that the following conditions are met: 562 * tion, are permitted provided that the following conditions are met:
… …
491 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 576 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
492 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 577 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
493 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- 578 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
494 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 579 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
495 * OF THE POSSIBILITY OF SUCH DAMAGE. 580 * OF THE POSSIBILITY OF SUCH DAMAGE.
581 *
582 * Alternatively, the contents of this file may be used under the terms of
583 * the GNU General Public License ("GPL") version 2 or any later version,
584 * in which case the provisions of the GPL are applicable instead of
585 * the above. If you wish to allow the use of your version of this file
586 * only under the terms of the GPL and not to allow others to use your
587 * version of this file under the BSD license, indicate your decision
588 * by deleting the provisions above and replace them with the notice
589 * and other provisions required by the GPL. If you do not delete the
590 * provisions above, a recipient may use your version of this file under
591 * either the BSD or the GPL.
496 */ 592 */
497 593
498#ifndef ECB_H 594#ifndef ECB_H
499#define ECB_H 595#define ECB_H
596
597/* 16 bits major, 16 bits minor */
598#define ECB_VERSION 0x00010006
500 599
501#ifdef _WIN32 600#ifdef _WIN32
502 typedef signed char int8_t; 601 typedef signed char int8_t;
503 typedef unsigned char uint8_t; 602 typedef unsigned char uint8_t;
504 typedef signed short int16_t; 603 typedef signed short int16_t;
… …
510 typedef unsigned long long uint64_t; 609 typedef unsigned long long uint64_t;
511 #else /* _MSC_VER || __BORLANDC__ */ 610 #else /* _MSC_VER || __BORLANDC__ */
512 typedef signed __int64 int64_t; 611 typedef signed __int64 int64_t;
513 typedef unsigned __int64 uint64_t; 612 typedef unsigned __int64 uint64_t;
514 #endif 613 #endif
614 #ifdef _WIN64
615 #define ECB_PTRSIZE 8
616 typedef uint64_t uintptr_t;
617 typedef int64_t intptr_t;
618 #else
619 #define ECB_PTRSIZE 4
620 typedef uint32_t uintptr_t;
621 typedef int32_t intptr_t;
622 #endif
515#else 623#else
516 #include <inttypes.h> 624 #include <inttypes.h>
625 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
626 #define ECB_PTRSIZE 8
627 #else
628 #define ECB_PTRSIZE 4
629 #endif
630#endif
631
632#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
633#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
634
635/* work around x32 idiocy by defining proper macros */
636#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
637 #if _ILP32
638 #define ECB_AMD64_X32 1
639 #else
640 #define ECB_AMD64 1
641 #endif
517#endif 642#endif
518 643
519/* many compilers define _GNUC_ to some versions but then only implement 644/* many compilers define _GNUC_ to some versions but then only implement
520 * what their idiot authors think are the "more important" extensions, 645 * what their idiot authors think are the "more important" extensions,
521 * causing enormous grief in return for some better fake benchmark numbers. 646 * causing enormous grief in return for some better fake benchmark numbers.
522 * or so. 647 * or so.
523 * we try to detect these and simply assume they are not gcc - if they have 648 * we try to detect these and simply assume they are not gcc - if they have
524 * an issue with that they should have done it right in the first place. 649 * an issue with that they should have done it right in the first place.
525 */ 650 */
526#ifndef ECB_GCC_VERSION
527 #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__) 651#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
528 #define ECB_GCC_VERSION(major,minor) 0 652 #define ECB_GCC_VERSION(major,minor) 0
529 #else 653#else
530 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) 654 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
531 #endif 655#endif
656
657#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
658
659#if __clang__ && defined __has_builtin
660 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
661#else
662 #define ECB_CLANG_BUILTIN(x) 0
663#endif
664
665#if __clang__ && defined __has_extension
666 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
667#else
668 #define ECB_CLANG_EXTENSION(x) 0
669#endif
670
671#define ECB_CPP (__cplusplus+0)
672#define ECB_CPP11 (__cplusplus >= 201103L)
673#define ECB_CPP14 (__cplusplus >= 201402L)
674#define ECB_CPP17 (__cplusplus >= 201703L)
675
676#if ECB_CPP
677 #define ECB_C 0
678 #define ECB_STDC_VERSION 0
679#else
680 #define ECB_C 1
681 #define ECB_STDC_VERSION __STDC_VERSION__
682#endif
683
684#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
685#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
686#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
687
688#if ECB_CPP
689 #define ECB_EXTERN_C extern "C"
690 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
691 #define ECB_EXTERN_C_END }
692#else
693 #define ECB_EXTERN_C extern
694 #define ECB_EXTERN_C_BEG
695 #define ECB_EXTERN_C_END
532#endif 696#endif
533 697
534/*****************************************************************************/ 698/*****************************************************************************/
535 699
536/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ 700/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
537/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */ 701/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
538 702
539#if ECB_NO_THREADS || ECB_NO_SMP 703#if ECB_NO_THREADS
704 #define ECB_NO_SMP 1
705#endif
706
707#if ECB_NO_SMP
540 #define ECB_MEMORY_FENCE do { } while (0) 708 #define ECB_MEMORY_FENCE do { } while (0)
541#endif 709#endif
542 710
711/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
712#if __xlC__ && ECB_CPP
713 #include <builtins.h>
714#endif
715
716#if 1400 <= _MSC_VER
717 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
718#endif
719
543#ifndef ECB_MEMORY_FENCE 720#ifndef ECB_MEMORY_FENCE
544 #if ECB_GCC_VERSION(2,5) || defined(__INTEL_COMPILER) || defined(__clang__) 721 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
722 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
545 #if __i386__ 723 #if __i386 || __i386__
546 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") 724 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
547 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */ 725 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
548 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */ 726 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
549 #elif __amd64 727 #elif ECB_GCC_AMD64
550 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 728 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
551 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory") 729 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
552 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */ 730 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
553 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 731 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
554 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 732 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
733 #elif defined __ARM_ARCH_2__ \
734 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
735 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
736 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
737 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
738 || defined __ARM_ARCH_5TEJ__
739 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
555 #elif defined(__ARM_ARCH_6__ ) || defined(__ARM_ARCH_6J__ ) \ 740 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
556 || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6ZK__) 741 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
742 || defined __ARM_ARCH_6T2__
557 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") 743 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
558 #elif defined(__ARM_ARCH_7__ ) || defined(__ARM_ARCH_7A__ ) \ 744 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
559 || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7R__ ) 745 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
560 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") 746 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
747 #elif __aarch64__
748 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
749 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
750 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
751 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
752 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
753 #elif defined __s390__ || defined __s390x__
754 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
755 #elif defined __mips__
756 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
757 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
758 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
759 #elif defined __alpha__
760 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
761 #elif defined __hppa__
762 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
763 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
764 #elif defined __ia64__
765 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
766 #elif defined __m68k__
767 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
768 #elif defined __m88k__
769 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
770 #elif defined __sh__
771 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
561 #endif 772 #endif
562 #endif 773 #endif
563#endif 774#endif
564 775
565#ifndef ECB_MEMORY_FENCE 776#ifndef ECB_MEMORY_FENCE
777 #if ECB_GCC_VERSION(4,7)
778 /* see comment below (stdatomic.h) about the C11 memory model. */
779 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
780 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
781 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
782 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
783
784 #elif ECB_CLANG_EXTENSION(c_atomic)
785 /* see comment below (stdatomic.h) about the C11 memory model. */
786 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
787 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
788 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
789 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
790
566 #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER) || defined(__clang__) 791 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
567 #define ECB_MEMORY_FENCE __sync_synchronize () 792 #define ECB_MEMORY_FENCE __sync_synchronize ()
568 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */ 793 #elif _MSC_VER >= 1500 /* VC++ 2008 */
569 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */ 794 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
795 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
796 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
797 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
798 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
570 #elif _MSC_VER >= 1400 /* VC++ 2005 */ 799 #elif _MSC_VER >= 1400 /* VC++ 2005 */
571 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) 800 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
572 #define ECB_MEMORY_FENCE _ReadWriteBarrier () 801 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
573 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ 802 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
574 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () 803 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
575 #elif defined(_WIN32) 804 #elif defined _WIN32
576 #include <WinNT.h> 805 #include <WinNT.h>
577 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ 806 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
807 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
808 #include <mbarrier.h>
809 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
810 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
811 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
812 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
813 #elif __xlC__
814 #define ECB_MEMORY_FENCE __sync ()
815 #endif
816#endif
817
818#ifndef ECB_MEMORY_FENCE
819 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
820 /* we assume that these memory fences work on all variables/all memory accesses, */
821 /* not just C11 atomics and atomic accesses */
822 #include <stdatomic.h>
823 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
824 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
825 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
578 #endif 826 #endif
579#endif 827#endif
580 828
581#ifndef ECB_MEMORY_FENCE 829#ifndef ECB_MEMORY_FENCE
582 #if !ECB_AVOID_PTHREADS 830 #if !ECB_AVOID_PTHREADS
… …
594 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER; 842 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
595 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0) 843 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
596 #endif 844 #endif
597#endif 845#endif
598 846
599#if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE) 847#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
600 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 848 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
601#endif 849#endif
602 850
603#if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE) 851#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
604 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 852 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
605#endif 853#endif
606 854
855#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
856 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
857#endif
858
607/*****************************************************************************/ 859/*****************************************************************************/
608 860
609#define ECB_C99 (__STDC_VERSION__ >= 199901L) 861#if ECB_CPP
610
611#if __cplusplus
612 #define ecb_inline static inline 862 #define ecb_inline static inline
613#elif ECB_GCC_VERSION(2,5) 863#elif ECB_GCC_VERSION(2,5)
614 #define ecb_inline static __inline__ 864 #define ecb_inline static __inline__
615#elif ECB_C99 865#elif ECB_C99
616 #define ecb_inline static inline 866 #define ecb_inline static inline
… …
630 880
631#define ECB_CONCAT_(a, b) a ## b 881#define ECB_CONCAT_(a, b) a ## b
632#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) 882#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
633#define ECB_STRINGIFY_(a) # a 883#define ECB_STRINGIFY_(a) # a
634#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) 884#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
885#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
635 886
636#define ecb_function_ ecb_inline 887#define ecb_function_ ecb_inline
637 888
638#if ECB_GCC_VERSION(3,1) 889#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
639 #define ecb_attribute(attrlist) __attribute__(attrlist) 890 #define ecb_attribute(attrlist) __attribute__ (attrlist)
891#else
892 #define ecb_attribute(attrlist)
893#endif
894
895#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
640 #define ecb_is_constant(expr) __builtin_constant_p (expr) 896 #define ecb_is_constant(expr) __builtin_constant_p (expr)
897#else
898 /* possible C11 impl for integral types
899 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
900 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
901
902 #define ecb_is_constant(expr) 0
903#endif
904
905#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
641 #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) 906 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
907#else
908 #define ecb_expect(expr,value) (expr)
909#endif
910
911#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
642 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) 912 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
643#else 913#else
644 #define ecb_attribute(attrlist)
645 #define ecb_is_constant(expr) 0
646 #define ecb_expect(expr,value) (expr)
647 #define ecb_prefetch(addr,rw,locality) 914 #define ecb_prefetch(addr,rw,locality)
648#endif 915#endif
649 916
650/* no emulation for ecb_decltype */ 917/* no emulation for ecb_decltype */
651#if ECB_GCC_VERSION(4,5) 918#if ECB_CPP11
919 // older implementations might have problems with decltype(x)::type, work around it
920 template<class T> struct ecb_decltype_t { typedef T type; };
652 #define ecb_decltype(x) __decltype(x) 921 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
653#elif ECB_GCC_VERSION(3,0) 922#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
654 #define ecb_decltype(x) __typeof(x) 923 #define ecb_decltype(x) __typeof__ (x)
655#endif 924#endif
656 925
926#if _MSC_VER >= 1300
927 #define ecb_deprecated __declspec (deprecated)
928#else
929 #define ecb_deprecated ecb_attribute ((__deprecated__))
930#endif
931
932#if _MSC_VER >= 1500
933 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
934#elif ECB_GCC_VERSION(4,5)
935 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
936#else
937 #define ecb_deprecated_message(msg) ecb_deprecated
938#endif
939
940#if _MSC_VER >= 1400
941 #define ecb_noinline __declspec (noinline)
942#else
657#define ecb_noinline ecb_attribute ((__noinline__)) 943 #define ecb_noinline ecb_attribute ((__noinline__))
658#define ecb_noreturn ecb_attribute ((__noreturn__)) 944#endif
945
659#define ecb_unused ecb_attribute ((__unused__)) 946#define ecb_unused ecb_attribute ((__unused__))
660#define ecb_const ecb_attribute ((__const__)) 947#define ecb_const ecb_attribute ((__const__))
661#define ecb_pure ecb_attribute ((__pure__)) 948#define ecb_pure ecb_attribute ((__pure__))
949
950#if ECB_C11 || __IBMC_NORETURN
951 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
952 #define ecb_noreturn _Noreturn
953#elif ECB_CPP11
954 #define ecb_noreturn [[noreturn]]
955#elif _MSC_VER >= 1200
956 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
957 #define ecb_noreturn __declspec (noreturn)
958#else
959 #define ecb_noreturn ecb_attribute ((__noreturn__))
960#endif
662 961
663#if ECB_GCC_VERSION(4,3) 962#if ECB_GCC_VERSION(4,3)
664 #define ecb_artificial ecb_attribute ((__artificial__)) 963 #define ecb_artificial ecb_attribute ((__artificial__))
665 #define ecb_hot ecb_attribute ((__hot__)) 964 #define ecb_hot ecb_attribute ((__hot__))
666 #define ecb_cold ecb_attribute ((__cold__)) 965 #define ecb_cold ecb_attribute ((__cold__))
… …
678/* for compatibility to the rest of the world */ 977/* for compatibility to the rest of the world */
679#define ecb_likely(expr) ecb_expect_true (expr) 978#define ecb_likely(expr) ecb_expect_true (expr)
680#define ecb_unlikely(expr) ecb_expect_false (expr) 979#define ecb_unlikely(expr) ecb_expect_false (expr)
681 980
682/* count trailing zero bits and count # of one bits */ 981/* count trailing zero bits and count # of one bits */
683#if ECB_GCC_VERSION(3,4) 982#if ECB_GCC_VERSION(3,4) \
983 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
984 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
985 && ECB_CLANG_BUILTIN(__builtin_popcount))
684 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */ 986 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
685 #define ecb_ld32(x) (__builtin_clz (x) ^ 31) 987 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
686 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) 988 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
687 #define ecb_ctz32(x) __builtin_ctz (x) 989 #define ecb_ctz32(x) __builtin_ctz (x)
688 #define ecb_ctz64(x) __builtin_ctzll (x) 990 #define ecb_ctz64(x) __builtin_ctzll (x)
689 #define ecb_popcount32(x) __builtin_popcount (x) 991 #define ecb_popcount32(x) __builtin_popcount (x)
690 /* no popcountll */ 992 /* no popcountll */
691#else 993#else
692 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; 994 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
693 ecb_function_ int 995 ecb_function_ ecb_const int
694 ecb_ctz32 (uint32_t x) 996 ecb_ctz32 (uint32_t x)
695 { 997 {
998#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
999 unsigned long r;
1000 _BitScanForward (&r, x);
1001 return (int)r;
1002#else
696 int r = 0; 1003 int r = 0;
697 1004
698 x &= ~x + 1; /* this isolates the lowest bit */ 1005 x &= ~x + 1; /* this isolates the lowest bit */
699 1006
700#if ECB_branchless_on_i386 1007#if ECB_branchless_on_i386
… …
710 if (x & 0xff00ff00) r += 8; 1017 if (x & 0xff00ff00) r += 8;
711 if (x & 0xffff0000) r += 16; 1018 if (x & 0xffff0000) r += 16;
712#endif 1019#endif
713 1020
714 return r; 1021 return r;
1022#endif
715 } 1023 }
716 1024
717 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; 1025 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
718 ecb_function_ int 1026 ecb_function_ ecb_const int
719 ecb_ctz64 (uint64_t x) 1027 ecb_ctz64 (uint64_t x)
720 { 1028 {
1029#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1030 unsigned long r;
1031 _BitScanForward64 (&r, x);
1032 return (int)r;
1033#else
721 int shift = x & 0xffffffffU ? 0 : 32; 1034 int shift = x & 0xffffffff ? 0 : 32;
722 return ecb_ctz32 (x >> shift) + shift; 1035 return ecb_ctz32 (x >> shift) + shift;
1036#endif
723 } 1037 }
724 1038
725 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; 1039 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
726 ecb_function_ int 1040 ecb_function_ ecb_const int
727 ecb_popcount32 (uint32_t x) 1041 ecb_popcount32 (uint32_t x)
728 { 1042 {
729 x -= (x >> 1) & 0x55555555; 1043 x -= (x >> 1) & 0x55555555;
730 x = ((x >> 2) & 0x33333333) + (x & 0x33333333); 1044 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
731 x = ((x >> 4) + x) & 0x0f0f0f0f; 1045 x = ((x >> 4) + x) & 0x0f0f0f0f;
732 x *= 0x01010101; 1046 x *= 0x01010101;
733 1047
734 return x >> 24; 1048 return x >> 24;
735 } 1049 }
736 1050
737 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; 1051 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
738 ecb_function_ int ecb_ld32 (uint32_t x) 1052 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
739 { 1053 {
1054#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1055 unsigned long r;
1056 _BitScanReverse (&r, x);
1057 return (int)r;
1058#else
740 int r = 0; 1059 int r = 0;
741 1060
742 if (x >> 16) { x >>= 16; r += 16; } 1061 if (x >> 16) { x >>= 16; r += 16; }
743 if (x >> 8) { x >>= 8; r += 8; } 1062 if (x >> 8) { x >>= 8; r += 8; }
744 if (x >> 4) { x >>= 4; r += 4; } 1063 if (x >> 4) { x >>= 4; r += 4; }
745 if (x >> 2) { x >>= 2; r += 2; } 1064 if (x >> 2) { x >>= 2; r += 2; }
746 if (x >> 1) { r += 1; } 1065 if (x >> 1) { r += 1; }
747 1066
748 return r; 1067 return r;
1068#endif
749 } 1069 }
750 1070
751 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; 1071 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
752 ecb_function_ int ecb_ld64 (uint64_t x) 1072 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
753 { 1073 {
1074#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1075 unsigned long r;
1076 _BitScanReverse64 (&r, x);
1077 return (int)r;
1078#else
754 int r = 0; 1079 int r = 0;
755 1080
756 if (x >> 32) { x >>= 32; r += 32; } 1081 if (x >> 32) { x >>= 32; r += 32; }
757 1082
758 return r + ecb_ld32 (x); 1083 return r + ecb_ld32 (x);
1084#endif
759 } 1085 }
760#endif 1086#endif
1087
1088ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1089ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1090ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1091ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1092
1093ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1094ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1095{
1096 return ( (x * 0x0802U & 0x22110U)
1097 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1098}
1099
1100ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1101ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1102{
1103 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1104 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1105 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1106 x = ( x >> 8 ) | ( x << 8);
1107
1108 return x;
1109}
1110
1111ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1112ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1113{
1114 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1115 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1116 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1117 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1118 x = ( x >> 16 ) | ( x << 16);
1119
1120 return x;
1121}
761 1122
762/* popcount64 is only available on 64 bit cpus as gcc builtin */ 1123/* popcount64 is only available on 64 bit cpus as gcc builtin */
763/* so for this version we are lazy */ 1124/* so for this version we are lazy */
764ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 1125ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
765ecb_function_ int 1126ecb_function_ ecb_const int
766ecb_popcount64 (uint64_t x) 1127ecb_popcount64 (uint64_t x)
767{ 1128{
768 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); 1129 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
769} 1130}
770 1131
771ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const; 1132ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
772ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const; 1133ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
773ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const; 1134ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
774ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const; 1135ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
775ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const; 1136ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
776ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const; 1137ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
777ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const; 1138ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
778ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const; 1139ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
779 1140
780ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); } 1141ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
781ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); } 1142ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
782ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); } 1143ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
783ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); } 1144ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
784ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } 1145ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
785ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } 1146ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
786ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } 1147ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
787ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } 1148ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
788 1149
789#if ECB_GCC_VERSION(4,3) 1150#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1151 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1152 #define ecb_bswap16(x) __builtin_bswap16 (x)
1153 #else
790 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 1154 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1155 #endif
791 #define ecb_bswap32(x) __builtin_bswap32 (x) 1156 #define ecb_bswap32(x) __builtin_bswap32 (x)
792 #define ecb_bswap64(x) __builtin_bswap64 (x) 1157 #define ecb_bswap64(x) __builtin_bswap64 (x)
1158#elif _MSC_VER
1159 #include <stdlib.h>
1160 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1161 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1162 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
793#else 1163#else
794 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; 1164 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
795 ecb_function_ uint16_t 1165 ecb_function_ ecb_const uint16_t
796 ecb_bswap16 (uint16_t x) 1166 ecb_bswap16 (uint16_t x)
797 { 1167 {
798 return ecb_rotl16 (x, 8); 1168 return ecb_rotl16 (x, 8);
799 } 1169 }
800 1170
801 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; 1171 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
802 ecb_function_ uint32_t 1172 ecb_function_ ecb_const uint32_t
803 ecb_bswap32 (uint32_t x) 1173 ecb_bswap32 (uint32_t x)
804 { 1174 {
805 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); 1175 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
806 } 1176 }
807 1177
808 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; 1178 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
809 ecb_function_ uint64_t 1179 ecb_function_ ecb_const uint64_t
810 ecb_bswap64 (uint64_t x) 1180 ecb_bswap64 (uint64_t x)
811 { 1181 {
812 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); 1182 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
813 } 1183 }
814#endif 1184#endif
815 1185
816#if ECB_GCC_VERSION(4,5) 1186#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
817 #define ecb_unreachable() __builtin_unreachable () 1187 #define ecb_unreachable() __builtin_unreachable ()
818#else 1188#else
819 /* this seems to work fine, but gcc always emits a warning for it :/ */ 1189 /* this seems to work fine, but gcc always emits a warning for it :/ */
820 ecb_function_ void ecb_unreachable (void) ecb_noreturn; 1190 ecb_inline ecb_noreturn void ecb_unreachable (void);
821 ecb_function_ void ecb_unreachable (void) { } 1191 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
822#endif 1192#endif
823 1193
824/* try to tell the compiler that some condition is definitely true */ 1194/* try to tell the compiler that some condition is definitely true */
825#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) 1195#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
826 1196
827ecb_function_ unsigned char ecb_byteorder_helper (void) ecb_const; 1197ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
828ecb_function_ unsigned char 1198ecb_inline ecb_const uint32_t
829ecb_byteorder_helper (void) 1199ecb_byteorder_helper (void)
830{ 1200{
831 const uint32_t u = 0x11223344; 1201 /* the union code still generates code under pressure in gcc, */
832 return *(unsigned char *)&u; 1202 /* but less than using pointers, and always seems to */
1203 /* successfully return a constant. */
1204 /* the reason why we have this horrible preprocessor mess */
1205 /* is to avoid it in all cases, at least on common architectures */
1206 /* or when using a recent enough gcc version (>= 4.6) */
1207#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1208 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1209 #define ECB_LITTLE_ENDIAN 1
1210 return 0x44332211;
1211#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1212 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1213 #define ECB_BIG_ENDIAN 1
1214 return 0x11223344;
1215#else
1216 union
1217 {
1218 uint8_t c[4];
1219 uint32_t u;
1220 } u = { 0x11, 0x22, 0x33, 0x44 };
1221 return u.u;
1222#endif
833} 1223}
834 1224
835ecb_function_ ecb_bool ecb_big_endian (void) ecb_const; 1225ecb_inline ecb_const ecb_bool ecb_big_endian (void);
836ecb_function_ ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } 1226ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
837ecb_function_ ecb_bool ecb_little_endian (void) ecb_const; 1227ecb_inline ecb_const ecb_bool ecb_little_endian (void);
838ecb_function_ ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } 1228ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
839 1229
840#if ECB_GCC_VERSION(3,0) || ECB_C99 1230#if ECB_GCC_VERSION(3,0) || ECB_C99
841 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) 1231 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
842#else 1232#else
843 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) 1233 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
844#endif 1234#endif
845 1235
846#if __cplusplus 1236#if ECB_CPP
847 template<typename T> 1237 template<typename T>
848 static inline T ecb_div_rd (T val, T div) 1238 static inline T ecb_div_rd (T val, T div)
849 { 1239 {
850 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; 1240 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
851 } 1241 }
… …
868 } 1258 }
869#else 1259#else
870 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1260 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
871#endif 1261#endif
872 1262
1263ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1264ecb_function_ ecb_const uint32_t
1265ecb_binary16_to_binary32 (uint32_t x)
1266{
1267 unsigned int s = (x & 0x8000) << (31 - 15);
1268 int e = (x >> 10) & 0x001f;
1269 unsigned int m = x & 0x03ff;
1270
1271 if (ecb_expect_false (e == 31))
1272 /* infinity or NaN */
1273 e = 255 - (127 - 15);
1274 else if (ecb_expect_false (!e))
1275 {
1276 if (ecb_expect_true (!m))
1277 /* zero, handled by code below by forcing e to 0 */
1278 e = 0 - (127 - 15);
1279 else
1280 {
1281 /* subnormal, renormalise */
1282 unsigned int s = 10 - ecb_ld32 (m);
1283
1284 m = (m << s) & 0x3ff; /* mask implicit bit */
1285 e -= s - 1;
1286 }
1287 }
1288
1289 /* e and m now are normalised, or zero, (or inf or nan) */
1290 e += 127 - 15;
1291
1292 return s | (e << 23) | (m << (23 - 10));
1293}
1294
1295ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1296ecb_function_ ecb_const uint16_t
1297ecb_binary32_to_binary16 (uint32_t x)
1298{
1299 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1300 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1301 unsigned int m = x & 0x007fffff;
1302
1303 x &= 0x7fffffff;
1304
1305 /* if it's within range of binary16 normals, use fast path */
1306 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1307 {
1308 /* mantissa round-to-even */
1309 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1310
1311 /* handle overflow */
1312 if (ecb_expect_false (m >= 0x00800000))
1313 {
1314 m >>= 1;
1315 e += 1;
1316 }
1317
1318 return s | (e << 10) | (m >> (23 - 10));
1319 }
1320
1321 /* handle large numbers and infinity */
1322 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1323 return s | 0x7c00;
1324
1325 /* handle zero, subnormals and small numbers */
1326 if (ecb_expect_true (x < 0x38800000))
1327 {
1328 /* zero */
1329 if (ecb_expect_true (!x))
1330 return s;
1331
1332 /* handle subnormals */
1333
1334 /* too small, will be zero */
1335 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1336 return s;
1337
1338 m |= 0x00800000; /* make implicit bit explicit */
1339
1340 /* very tricky - we need to round to the nearest e (+10) bit value */
1341 {
1342 unsigned int bits = 14 - e;
1343 unsigned int half = (1 << (bits - 1)) - 1;
1344 unsigned int even = (m >> bits) & 1;
1345
1346 /* if this overflows, we will end up with a normalised number */
1347 m = (m + half + even) >> bits;
1348 }
1349
1350 return s | m;
1351 }
1352
1353 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1354 m >>= 13;
1355
1356 return s | 0x7c00 | m | !m;
1357}
1358
1359/*******************************************************************************/
1360/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1361
1362/* basically, everything uses "ieee pure-endian" floating point numbers */
1363/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1364#if 0 \
1365 || __i386 || __i386__ \
1366 || ECB_GCC_AMD64 \
1367 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1368 || defined __s390__ || defined __s390x__ \
1369 || defined __mips__ \
1370 || defined __alpha__ \
1371 || defined __hppa__ \
1372 || defined __ia64__ \
1373 || defined __m68k__ \
1374 || defined __m88k__ \
1375 || defined __sh__ \
1376 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1377 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1378 || defined __aarch64__
1379 #define ECB_STDFP 1
1380 #include <string.h> /* for memcpy */
1381#else
1382 #define ECB_STDFP 0
1383#endif
1384
1385#ifndef ECB_NO_LIBM
1386
1387 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1388
1389 /* only the oldest of old doesn't have this one. solaris. */
1390 #ifdef INFINITY
1391 #define ECB_INFINITY INFINITY
1392 #else
1393 #define ECB_INFINITY HUGE_VAL
1394 #endif
1395
1396 #ifdef NAN
1397 #define ECB_NAN NAN
1398 #else
1399 #define ECB_NAN ECB_INFINITY
1400 #endif
1401
1402 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1403 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1404 #define ecb_frexpf(x,e) frexpf ((x), (e))
1405 #else
1406 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1407 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1408 #endif
1409
1410 /* convert a float to ieee single/binary32 */
1411 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1412 ecb_function_ ecb_const uint32_t
1413 ecb_float_to_binary32 (float x)
1414 {
1415 uint32_t r;
1416
1417 #if ECB_STDFP
1418 memcpy (&r, &x, 4);
1419 #else
1420 /* slow emulation, works for anything but -0 */
1421 uint32_t m;
1422 int e;
1423
1424 if (x == 0e0f ) return 0x00000000U;
1425 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1426 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1427 if (x != x ) return 0x7fbfffffU;
1428
1429 m = ecb_frexpf (x, &e) * 0x1000000U;
1430
1431 r = m & 0x80000000U;
1432
1433 if (r)
1434 m = -m;
1435
1436 if (e <= -126)
1437 {
1438 m &= 0xffffffU;
1439 m >>= (-125 - e);
1440 e = -126;
1441 }
1442
1443 r |= (e + 126) << 23;
1444 r |= m & 0x7fffffU;
1445 #endif
1446
1447 return r;
1448 }
1449
1450 /* converts an ieee single/binary32 to a float */
1451 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1452 ecb_function_ ecb_const float
1453 ecb_binary32_to_float (uint32_t x)
1454 {
1455 float r;
1456
1457 #if ECB_STDFP
1458 memcpy (&r, &x, 4);
1459 #else
1460 /* emulation, only works for normals and subnormals and +0 */
1461 int neg = x >> 31;
1462 int e = (x >> 23) & 0xffU;
1463
1464 x &= 0x7fffffU;
1465
1466 if (e)
1467 x |= 0x800000U;
1468 else
1469 e = 1;
1470
1471 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1472 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1473
1474 r = neg ? -r : r;
1475 #endif
1476
1477 return r;
1478 }
1479
1480 /* convert a double to ieee double/binary64 */
1481 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1482 ecb_function_ ecb_const uint64_t
1483 ecb_double_to_binary64 (double x)
1484 {
1485 uint64_t r;
1486
1487 #if ECB_STDFP
1488 memcpy (&r, &x, 8);
1489 #else
1490 /* slow emulation, works for anything but -0 */
1491 uint64_t m;
1492 int e;
1493
1494 if (x == 0e0 ) return 0x0000000000000000U;
1495 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1496 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1497 if (x != x ) return 0X7ff7ffffffffffffU;
1498
1499 m = frexp (x, &e) * 0x20000000000000U;
1500
1501 r = m & 0x8000000000000000;;
1502
1503 if (r)
1504 m = -m;
1505
1506 if (e <= -1022)
1507 {
1508 m &= 0x1fffffffffffffU;
1509 m >>= (-1021 - e);
1510 e = -1022;
1511 }
1512
1513 r |= ((uint64_t)(e + 1022)) << 52;
1514 r |= m & 0xfffffffffffffU;
1515 #endif
1516
1517 return r;
1518 }
1519
1520 /* converts an ieee double/binary64 to a double */
1521 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1522 ecb_function_ ecb_const double
1523 ecb_binary64_to_double (uint64_t x)
1524 {
1525 double r;
1526
1527 #if ECB_STDFP
1528 memcpy (&r, &x, 8);
1529 #else
1530 /* emulation, only works for normals and subnormals and +0 */
1531 int neg = x >> 63;
1532 int e = (x >> 52) & 0x7ffU;
1533
1534 x &= 0xfffffffffffffU;
1535
1536 if (e)
1537 x |= 0x10000000000000U;
1538 else
1539 e = 1;
1540
1541 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1542 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1543
1544 r = neg ? -r : r;
1545 #endif
1546
1547 return r;
1548 }
1549
1550 /* convert a float to ieee half/binary16 */
1551 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1552 ecb_function_ ecb_const uint16_t
1553 ecb_float_to_binary16 (float x)
1554 {
1555 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1556 }
1557
1558 /* convert an ieee half/binary16 to float */
1559 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1560 ecb_function_ ecb_const float
1561 ecb_binary16_to_float (uint16_t x)
1562 {
1563 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1564 }
1565
1566#endif
1567
873#endif 1568#endif
874 1569
875/* ECB.H END */ 1570/* ECB.H END */
876 1571
877#if ECB_MEMORY_FENCE_NEEDS_PTHREADS 1572#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
878/* if your architecture doesn't need memory fences, e.g. because it is 1573/* if your architecture doesn't need memory fences, e.g. because it is
879 * single-cpu/core, or if you use libev in a project that doesn't use libev 1574 * single-cpu/core, or if you use libev in a project that doesn't use libev
880 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling 1575 * from multiple threads, then you can define ECB_NO_THREADS when compiling
881 * libev, in which casess the memory fences become nops. 1576 * libev, in which cases the memory fences become nops.
882 * alternatively, you can remove this #error and link against libpthread, 1577 * alternatively, you can remove this #error and link against libpthread,
883 * which will then provide the memory fences. 1578 * which will then provide the memory fences.
884 */ 1579 */
885# error "memory fences not defined for your architecture, please report" 1580# error "memory fences not defined for your architecture, please report"
886#endif 1581#endif
… …
889# define ECB_MEMORY_FENCE do { } while (0) 1584# define ECB_MEMORY_FENCE do { } while (0)
890# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 1585# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
891# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 1586# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
892#endif 1587#endif
893 1588
894#define expect_false(cond) ecb_expect_false (cond)
895#define expect_true(cond) ecb_expect_true (cond)
896#define noinline ecb_noinline
897
898#define inline_size ecb_inline 1589#define inline_size ecb_inline
899 1590
900#if EV_FEATURE_CODE 1591#if EV_FEATURE_CODE
901# define inline_speed ecb_inline 1592# define inline_speed ecb_inline
902#else 1593#else
903# define inline_speed static noinline 1594# define inline_speed ecb_noinline static
904#endif 1595#endif
1596
1597/*****************************************************************************/
1598/* raw syscall wrappers */
1599
1600#if EV_NEED_SYSCALL
1601
1602#include <sys/syscall.h>
1603
1604/*
1605 * define some syscall wrappers for common architectures
1606 * this is mostly for nice looks during debugging, not performance.
1607 * our syscalls return < 0, not == -1, on error. which is good
1608 * enough for linux aio.
1609 * TODO: arm is also common nowadays, maybe even mips and x86
1610 * TODO: after implementing this, it suddenly looks like overkill, but its hard to remove...
1611 */
1612#if __GNUC__ && __linux && ECB_AMD64 && !defined __OPTIMIZE_SIZE__
1613 /* the costly errno access probably kills this for size optimisation */
1614
1615 #define ev_syscall(nr,narg,arg1,arg2,arg3,arg4,arg5,arg6) \
1616 ({ \
1617 long res; \
1618 register unsigned long r6 __asm__ ("r9" ); \
1619 register unsigned long r5 __asm__ ("r8" ); \
1620 register unsigned long r4 __asm__ ("r10"); \
1621 register unsigned long r3 __asm__ ("rdx"); \
1622 register unsigned long r2 __asm__ ("rsi"); \
1623 register unsigned long r1 __asm__ ("rdi"); \
1624 if (narg >= 6) r6 = (unsigned long)(arg6); \
1625 if (narg >= 5) r5 = (unsigned long)(arg5); \
1626 if (narg >= 4) r4 = (unsigned long)(arg4); \
1627 if (narg >= 3) r3 = (unsigned long)(arg3); \
1628 if (narg >= 2) r2 = (unsigned long)(arg2); \
1629 if (narg >= 1) r1 = (unsigned long)(arg1); \
1630 __asm__ __volatile__ ( \
1631 "syscall\n\t" \
1632 : "=a" (res) \
1633 : "0" (nr), "r" (r1), "r" (r2), "r" (r3), "r" (r4), "r" (r5) \
1634 : "cc", "r11", "cx", "memory"); \
1635 errno = -res; \
1636 res; \
1637 })
1638
1639#endif
1640
1641#ifdef ev_syscall
1642 #define ev_syscall0(nr) ev_syscall (nr, 0, 0, 0, 0, 0, 0, 0)
1643 #define ev_syscall1(nr,arg1) ev_syscall (nr, 1, arg1, 0, 0, 0, 0, 0)
1644 #define ev_syscall2(nr,arg1,arg2) ev_syscall (nr, 2, arg1, arg2, 0, 0, 0, 0)
1645 #define ev_syscall3(nr,arg1,arg2,arg3) ev_syscall (nr, 3, arg1, arg2, arg3, 0, 0, 0)
1646 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) ev_syscall (nr, 3, arg1, arg2, arg3, arg4, 0, 0)
1647 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) ev_syscall (nr, 5, arg1, arg2, arg3, arg4, arg5, 0)
1648 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) ev_syscall (nr, 6, arg1, arg2, arg3, arg4, arg5,arg6)
1649#else
1650 #define ev_syscall0(nr) syscall (nr)
1651 #define ev_syscall1(nr,arg1) syscall (nr, arg1)
1652 #define ev_syscall2(nr,arg1,arg2) syscall (nr, arg1, arg2)
1653 #define ev_syscall3(nr,arg1,arg2,arg3) syscall (nr, arg1, arg2, arg3)
1654 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) syscall (nr, arg1, arg2, arg3, arg4)
1655 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) syscall (nr, arg1, arg2, arg3, arg4, arg5)
1656 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) syscall (nr, arg1, arg2, arg3, arg4, arg5,arg6)
1657#endif
1658
1659#endif
1660
1661/*****************************************************************************/
905 1662
906#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1663#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
907 1664
908#if EV_MINPRI == EV_MAXPRI 1665#if EV_MINPRI == EV_MAXPRI
909# define ABSPRI(w) (((W)w), 0) 1666# define ABSPRI(w) (((W)w), 0)
910#else 1667#else
911# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1668# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
912#endif 1669#endif
913 1670
914#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1671#define EMPTY /* required for microsofts broken pseudo-c compiler */
915#define EMPTY2(a,b) /* used to suppress some warnings */
916 1672
917typedef ev_watcher *W; 1673typedef ev_watcher *W;
918typedef ev_watcher_list *WL; 1674typedef ev_watcher_list *WL;
919typedef ev_watcher_time *WT; 1675typedef ev_watcher_time *WT;
920 1676
… …
945# include "ev_win32.c" 1701# include "ev_win32.c"
946#endif 1702#endif
947 1703
948/*****************************************************************************/ 1704/*****************************************************************************/
949 1705
1706#if EV_USE_LINUXAIO
1707# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1708#endif
1709
950/* define a suitable floor function (only used by periodics atm) */ 1710/* define a suitable floor function (only used by periodics atm) */
951 1711
952#if EV_USE_FLOOR 1712#if EV_USE_FLOOR
953# include <math.h> 1713# include <math.h>
954# define ev_floor(v) floor (v) 1714# define ev_floor(v) floor (v)
955#else 1715#else
956 1716
957#include <float.h> 1717#include <float.h>
958 1718
959/* a floor() replacement function, should be independent of ev_tstamp type */ 1719/* a floor() replacement function, should be independent of ev_tstamp type */
1720ecb_noinline
960static ev_tstamp noinline 1721static ev_tstamp
961ev_floor (ev_tstamp v) 1722ev_floor (ev_tstamp v)
962{ 1723{
963 /* the choice of shift factor is not terribly important */ 1724 /* the choice of shift factor is not terribly important */
964#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1725#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
965 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1726 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
966#else 1727#else
967 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; 1728 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
968#endif 1729#endif
969 1730
970 /* argument too large for an unsigned long? */ 1731 /* argument too large for an unsigned long? */
971 if (expect_false (v >= shift)) 1732 if (ecb_expect_false (v >= shift))
972 { 1733 {
973 ev_tstamp f; 1734 ev_tstamp f;
974 1735
975 if (v == v - 1.) 1736 if (v == v - 1.)
976 return v; /* very large number */ 1737 return v; /* very large number */
… …
978 f = shift * ev_floor (v * (1. / shift)); 1739 f = shift * ev_floor (v * (1. / shift));
979 return f + ev_floor (v - f); 1740 return f + ev_floor (v - f);
980 } 1741 }
981 1742
982 /* special treatment for negative args? */ 1743 /* special treatment for negative args? */
983 if (expect_false (v < 0.)) 1744 if (ecb_expect_false (v < 0.))
984 { 1745 {
985 ev_tstamp f = -ev_floor (-v); 1746 ev_tstamp f = -ev_floor (-v);
986 1747
987 return f - (f == v ? 0 : 1); 1748 return f - (f == v ? 0 : 1);
988 } 1749 }
… …
997 1758
998#ifdef __linux 1759#ifdef __linux
999# include <sys/utsname.h> 1760# include <sys/utsname.h>
1000#endif 1761#endif
1001 1762
1002static unsigned int noinline ecb_cold 1763ecb_noinline ecb_cold
1764static unsigned int
1003ev_linux_version (void) 1765ev_linux_version (void)
1004{ 1766{
1005#ifdef __linux 1767#ifdef __linux
1006 unsigned int v = 0; 1768 unsigned int v = 0;
1007 struct utsname buf; 1769 struct utsname buf;
… …
1036} 1798}
1037 1799
1038/*****************************************************************************/ 1800/*****************************************************************************/
1039 1801
1040#if EV_AVOID_STDIO 1802#if EV_AVOID_STDIO
1041static void noinline ecb_cold 1803ecb_noinline ecb_cold
1804static void
1042ev_printerr (const char *msg) 1805ev_printerr (const char *msg)
1043{ 1806{
1044 write (STDERR_FILENO, msg, strlen (msg)); 1807 write (STDERR_FILENO, msg, strlen (msg));
1045} 1808}
1046#endif 1809#endif
1047 1810
1048static void (*syserr_cb)(const char *msg); 1811static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
1049 1812
1050void ecb_cold 1813ecb_cold
1814void
1051ev_set_syserr_cb (void (*cb)(const char *msg)) 1815ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
1052{ 1816{
1053 syserr_cb = cb; 1817 syserr_cb = cb;
1054} 1818}
1055 1819
1056static void noinline ecb_cold 1820ecb_noinline ecb_cold
1821static void
1057ev_syserr (const char *msg) 1822ev_syserr (const char *msg)
1058{ 1823{
1059 if (!msg) 1824 if (!msg)
1060 msg = "(libev) system error"; 1825 msg = "(libev) system error";
1061 1826
… …
1074 abort (); 1839 abort ();
1075 } 1840 }
1076} 1841}
1077 1842
1078static void * 1843static void *
1079ev_realloc_emul (void *ptr, long size) 1844ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
1080{ 1845{
1081#if __GLIBC__
1082 return realloc (ptr, size);
1083#else
1084 /* some systems, notably openbsd and darwin, fail to properly 1846 /* some systems, notably openbsd and darwin, fail to properly
1085 * implement realloc (x, 0) (as required by both ansi c-89 and 1847 * implement realloc (x, 0) (as required by both ansi c-89 and
1086 * the single unix specification, so work around them here. 1848 * the single unix specification, so work around them here.
1849 * recently, also (at least) fedora and debian started breaking it,
1850 * despite documenting it otherwise.
1087 */ 1851 */
1088 1852
1089 if (size) 1853 if (size)
1090 return realloc (ptr, size); 1854 return realloc (ptr, size);
1091 1855
1092 free (ptr); 1856 free (ptr);
1093 return 0; 1857 return 0;
1094#endif
1095} 1858}
1096 1859
1097static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1860static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
1098 1861
1099void ecb_cold 1862ecb_cold
1863void
1100ev_set_allocator (void *(*cb)(void *ptr, long size)) 1864ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
1101{ 1865{
1102 alloc = cb; 1866 alloc = cb;
1103} 1867}
1104 1868
1105inline_speed void * 1869inline_speed void *
… …
1132typedef struct 1896typedef struct
1133{ 1897{
1134 WL head; 1898 WL head;
1135 unsigned char events; /* the events watched for */ 1899 unsigned char events; /* the events watched for */
1136 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 1900 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
1137 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1901 unsigned char emask; /* some backends store the actual kernel mask in here */
1138 unsigned char unused; 1902 unsigned char eflags; /* flags field for use by backends */
1139#if EV_USE_EPOLL 1903#if EV_USE_EPOLL
1140 unsigned int egen; /* generation counter to counter epoll bugs */ 1904 unsigned int egen; /* generation counter to counter epoll bugs */
1141#endif 1905#endif
1142#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 1906#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1143 SOCKET handle; 1907 SOCKET handle;
… …
1193 #undef VAR 1957 #undef VAR
1194 }; 1958 };
1195 #include "ev_wrap.h" 1959 #include "ev_wrap.h"
1196 1960
1197 static struct ev_loop default_loop_struct; 1961 static struct ev_loop default_loop_struct;
1198 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a defintiino despite extern */ 1962 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
1199 1963
1200#else 1964#else
1201 1965
1202 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a defintiino despite extern */ 1966 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
1203 #define VAR(name,decl) static decl; 1967 #define VAR(name,decl) static decl;
1204 #include "ev_vars.h" 1968 #include "ev_vars.h"
1205 #undef VAR 1969 #undef VAR
1206 1970
1207 static int ev_default_loop_ptr; 1971 static int ev_default_loop_ptr;
1208 1972
1209#endif 1973#endif
1210 1974
1211#if EV_FEATURE_API 1975#if EV_FEATURE_API
1212# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1976# define EV_RELEASE_CB if (ecb_expect_false (release_cb)) release_cb (EV_A)
1213# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 1977# define EV_ACQUIRE_CB if (ecb_expect_false (acquire_cb)) acquire_cb (EV_A)
1214# define EV_INVOKE_PENDING invoke_cb (EV_A) 1978# define EV_INVOKE_PENDING invoke_cb (EV_A)
1215#else 1979#else
1216# define EV_RELEASE_CB (void)0 1980# define EV_RELEASE_CB (void)0
1217# define EV_ACQUIRE_CB (void)0 1981# define EV_ACQUIRE_CB (void)0
1218# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1982# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
… …
1222 1986
1223/*****************************************************************************/ 1987/*****************************************************************************/
1224 1988
1225#ifndef EV_HAVE_EV_TIME 1989#ifndef EV_HAVE_EV_TIME
1226ev_tstamp 1990ev_tstamp
1227ev_time (void) 1991ev_time (void) EV_NOEXCEPT
1228{ 1992{
1229#if EV_USE_REALTIME 1993#if EV_USE_REALTIME
1230 if (expect_true (have_realtime)) 1994 if (ecb_expect_true (have_realtime))
1231 { 1995 {
1232 struct timespec ts; 1996 struct timespec ts;
1233 clock_gettime (CLOCK_REALTIME, &ts); 1997 clock_gettime (CLOCK_REALTIME, &ts);
1234 return ts.tv_sec + ts.tv_nsec * 1e-9; 1998 return ts.tv_sec + ts.tv_nsec * 1e-9;
1235 } 1999 }
… …
1243 2007
1244inline_size ev_tstamp 2008inline_size ev_tstamp
1245get_clock (void) 2009get_clock (void)
1246{ 2010{
1247#if EV_USE_MONOTONIC 2011#if EV_USE_MONOTONIC
1248 if (expect_true (have_monotonic)) 2012 if (ecb_expect_true (have_monotonic))
1249 { 2013 {
1250 struct timespec ts; 2014 struct timespec ts;
1251 clock_gettime (CLOCK_MONOTONIC, &ts); 2015 clock_gettime (CLOCK_MONOTONIC, &ts);
1252 return ts.tv_sec + ts.tv_nsec * 1e-9; 2016 return ts.tv_sec + ts.tv_nsec * 1e-9;
1253 } 2017 }
… …
1256 return ev_time (); 2020 return ev_time ();
1257} 2021}
1258 2022
1259#if EV_MULTIPLICITY 2023#if EV_MULTIPLICITY
1260ev_tstamp 2024ev_tstamp
1261ev_now (EV_P) 2025ev_now (EV_P) EV_NOEXCEPT
1262{ 2026{
1263 return ev_rt_now; 2027 return ev_rt_now;
1264} 2028}
1265#endif 2029#endif
1266 2030
1267void 2031void
1268ev_sleep (ev_tstamp delay) 2032ev_sleep (ev_tstamp delay) EV_NOEXCEPT
1269{ 2033{
1270 if (delay > 0.) 2034 if (delay > 0.)
1271 { 2035 {
1272#if EV_USE_NANOSLEEP 2036#if EV_USE_NANOSLEEP
1273 struct timespec ts; 2037 struct timespec ts;
1274 2038
1275 EV_TS_SET (ts, delay); 2039 EV_TS_SET (ts, delay);
1276 nanosleep (&ts, 0); 2040 nanosleep (&ts, 0);
1277#elif defined(_WIN32) 2041#elif defined _WIN32
2042 /* maybe this should round up, as ms is very low resolution */
2043 /* compared to select (µs) or nanosleep (ns) */
1278 Sleep ((unsigned long)(delay * 1e3)); 2044 Sleep ((unsigned long)(delay * 1e3));
1279#else 2045#else
1280 struct timeval tv; 2046 struct timeval tv;
1281 2047
1282 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 2048 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
… …
1313 } 2079 }
1314 2080
1315 return ncur; 2081 return ncur;
1316} 2082}
1317 2083
1318static void * noinline ecb_cold 2084ecb_noinline ecb_cold
2085static void *
1319array_realloc (int elem, void *base, int *cur, int cnt) 2086array_realloc (int elem, void *base, int *cur, int cnt)
1320{ 2087{
1321 *cur = array_nextsize (elem, *cur, cnt); 2088 *cur = array_nextsize (elem, *cur, cnt);
1322 return ev_realloc (base, elem * *cur); 2089 return ev_realloc (base, elem * *cur);
1323} 2090}
1324 2091
2092#define array_needsize_noinit(base,offset,count)
2093
1325#define array_init_zero(base,count) \ 2094#define array_needsize_zerofill(base,offset,count) \
1326 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2095 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
1327 2096
1328#define array_needsize(type,base,cur,cnt,init) \ 2097#define array_needsize(type,base,cur,cnt,init) \
1329 if (expect_false ((cnt) > (cur))) \ 2098 if (ecb_expect_false ((cnt) > (cur))) \
1330 { \ 2099 { \
1331 int ecb_unused ocur_ = (cur); \ 2100 ecb_unused int ocur_ = (cur); \
1332 (base) = (type *)array_realloc \ 2101 (base) = (type *)array_realloc \
1333 (sizeof (type), (base), &(cur), (cnt)); \ 2102 (sizeof (type), (base), &(cur), (cnt)); \
1334 init ((base) + (ocur_), (cur) - ocur_); \ 2103 init ((base), ocur_, ((cur) - ocur_)); \
1335 } 2104 }
1336 2105
1337#if 0 2106#if 0
1338#define array_slim(type,stem) \ 2107#define array_slim(type,stem) \
1339 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2108 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
1348 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2117 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
1349 2118
1350/*****************************************************************************/ 2119/*****************************************************************************/
1351 2120
1352/* dummy callback for pending events */ 2121/* dummy callback for pending events */
1353static void noinline 2122ecb_noinline
2123static void
1354pendingcb (EV_P_ ev_prepare *w, int revents) 2124pendingcb (EV_P_ ev_prepare *w, int revents)
1355{ 2125{
1356} 2126}
1357 2127
1358void noinline 2128ecb_noinline
2129void
1359ev_feed_event (EV_P_ void *w, int revents) 2130ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
1360{ 2131{
1361 W w_ = (W)w; 2132 W w_ = (W)w;
1362 int pri = ABSPRI (w_); 2133 int pri = ABSPRI (w_);
1363 2134
1364 if (expect_false (w_->pending)) 2135 if (ecb_expect_false (w_->pending))
1365 pendings [pri][w_->pending - 1].events |= revents; 2136 pendings [pri][w_->pending - 1].events |= revents;
1366 else 2137 else
1367 { 2138 {
1368 w_->pending = ++pendingcnt [pri]; 2139 w_->pending = ++pendingcnt [pri];
1369 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2140 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
1370 pendings [pri][w_->pending - 1].w = w_; 2141 pendings [pri][w_->pending - 1].w = w_;
1371 pendings [pri][w_->pending - 1].events = revents; 2142 pendings [pri][w_->pending - 1].events = revents;
1372 } 2143 }
2144
2145 pendingpri = NUMPRI - 1;
1373} 2146}
1374 2147
1375inline_speed void 2148inline_speed void
1376feed_reverse (EV_P_ W w) 2149feed_reverse (EV_P_ W w)
1377{ 2150{
1378 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2151 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
1379 rfeeds [rfeedcnt++] = w; 2152 rfeeds [rfeedcnt++] = w;
1380} 2153}
1381 2154
1382inline_size void 2155inline_size void
1383feed_reverse_done (EV_P_ int revents) 2156feed_reverse_done (EV_P_ int revents)
… …
1418inline_speed void 2191inline_speed void
1419fd_event (EV_P_ int fd, int revents) 2192fd_event (EV_P_ int fd, int revents)
1420{ 2193{
1421 ANFD *anfd = anfds + fd; 2194 ANFD *anfd = anfds + fd;
1422 2195
1423 if (expect_true (!anfd->reify)) 2196 if (ecb_expect_true (!anfd->reify))
1424 fd_event_nocheck (EV_A_ fd, revents); 2197 fd_event_nocheck (EV_A_ fd, revents);
1425} 2198}
1426 2199
1427void 2200void
1428ev_feed_fd_event (EV_P_ int fd, int revents) 2201ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
1429{ 2202{
1430 if (fd >= 0 && fd < anfdmax) 2203 if (fd >= 0 && fd < anfdmax)
1431 fd_event_nocheck (EV_A_ fd, revents); 2204 fd_event_nocheck (EV_A_ fd, revents);
1432} 2205}
1433 2206
… …
1470 ev_io *w; 2243 ev_io *w;
1471 2244
1472 unsigned char o_events = anfd->events; 2245 unsigned char o_events = anfd->events;
1473 unsigned char o_reify = anfd->reify; 2246 unsigned char o_reify = anfd->reify;
1474 2247
1475 anfd->reify = 0; 2248 anfd->reify = 0;
1476 2249
1477 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 2250 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
1478 { 2251 {
1479 anfd->events = 0; 2252 anfd->events = 0;
1480 2253
1481 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2254 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1482 anfd->events |= (unsigned char)w->events; 2255 anfd->events |= (unsigned char)w->events;
… …
1491 2264
1492 fdchangecnt = 0; 2265 fdchangecnt = 0;
1493} 2266}
1494 2267
1495/* something about the given fd changed */ 2268/* something about the given fd changed */
1496inline_size void 2269inline_size
2270void
1497fd_change (EV_P_ int fd, int flags) 2271fd_change (EV_P_ int fd, int flags)
1498{ 2272{
1499 unsigned char reify = anfds [fd].reify; 2273 unsigned char reify = anfds [fd].reify;
1500 anfds [fd].reify |= flags; 2274 anfds [fd].reify |= flags;
1501 2275
1502 if (expect_true (!reify)) 2276 if (ecb_expect_true (!reify))
1503 { 2277 {
1504 ++fdchangecnt; 2278 ++fdchangecnt;
1505 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2279 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
1506 fdchanges [fdchangecnt - 1] = fd; 2280 fdchanges [fdchangecnt - 1] = fd;
1507 } 2281 }
1508} 2282}
1509 2283
1510/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2284/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1511inline_speed void ecb_cold 2285inline_speed ecb_cold void
1512fd_kill (EV_P_ int fd) 2286fd_kill (EV_P_ int fd)
1513{ 2287{
1514 ev_io *w; 2288 ev_io *w;
1515 2289
1516 while ((w = (ev_io *)anfds [fd].head)) 2290 while ((w = (ev_io *)anfds [fd].head))
… …
1519 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2293 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1520 } 2294 }
1521} 2295}
1522 2296
1523/* check whether the given fd is actually valid, for error recovery */ 2297/* check whether the given fd is actually valid, for error recovery */
1524inline_size int ecb_cold 2298inline_size ecb_cold int
1525fd_valid (int fd) 2299fd_valid (int fd)
1526{ 2300{
1527#ifdef _WIN32 2301#ifdef _WIN32
1528 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2302 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1529#else 2303#else
1530 return fcntl (fd, F_GETFD) != -1; 2304 return fcntl (fd, F_GETFD) != -1;
1531#endif 2305#endif
1532} 2306}
1533 2307
1534/* called on EBADF to verify fds */ 2308/* called on EBADF to verify fds */
1535static void noinline ecb_cold 2309ecb_noinline ecb_cold
2310static void
1536fd_ebadf (EV_P) 2311fd_ebadf (EV_P)
1537{ 2312{
1538 int fd; 2313 int fd;
1539 2314
1540 for (fd = 0; fd < anfdmax; ++fd) 2315 for (fd = 0; fd < anfdmax; ++fd)
… …
1542 if (!fd_valid (fd) && errno == EBADF) 2317 if (!fd_valid (fd) && errno == EBADF)
1543 fd_kill (EV_A_ fd); 2318 fd_kill (EV_A_ fd);
1544} 2319}
1545 2320
1546/* called on ENOMEM in select/poll to kill some fds and retry */ 2321/* called on ENOMEM in select/poll to kill some fds and retry */
1547static void noinline ecb_cold 2322ecb_noinline ecb_cold
2323static void
1548fd_enomem (EV_P) 2324fd_enomem (EV_P)
1549{ 2325{
1550 int fd; 2326 int fd;
1551 2327
1552 for (fd = anfdmax; fd--; ) 2328 for (fd = anfdmax; fd--; )
… …
1556 break; 2332 break;
1557 } 2333 }
1558} 2334}
1559 2335
1560/* usually called after fork if backend needs to re-arm all fds from scratch */ 2336/* usually called after fork if backend needs to re-arm all fds from scratch */
1561static void noinline 2337ecb_noinline
2338static void
1562fd_rearm_all (EV_P) 2339fd_rearm_all (EV_P)
1563{ 2340{
1564 int fd; 2341 int fd;
1565 2342
1566 for (fd = 0; fd < anfdmax; ++fd) 2343 for (fd = 0; fd < anfdmax; ++fd)
… …
1619 ev_tstamp minat; 2396 ev_tstamp minat;
1620 ANHE *minpos; 2397 ANHE *minpos;
1621 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2398 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1622 2399
1623 /* find minimum child */ 2400 /* find minimum child */
1624 if (expect_true (pos + DHEAP - 1 < E)) 2401 if (ecb_expect_true (pos + DHEAP - 1 < E))
1625 { 2402 {
1626 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2403 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1627 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2404 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1628 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2405 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1629 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2406 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
… …
1747 2524
1748/*****************************************************************************/ 2525/*****************************************************************************/
1749 2526
1750#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2527#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1751 2528
1752static void noinline ecb_cold 2529ecb_noinline ecb_cold
2530static void
1753evpipe_init (EV_P) 2531evpipe_init (EV_P)
1754{ 2532{
1755 if (!ev_is_active (&pipe_w)) 2533 if (!ev_is_active (&pipe_w))
1756 { 2534 {
2535 int fds [2];
2536
1757# if EV_USE_EVENTFD 2537# if EV_USE_EVENTFD
2538 fds [0] = -1;
1758 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2539 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1759 if (evfd < 0 && errno == EINVAL) 2540 if (fds [1] < 0 && errno == EINVAL)
1760 evfd = eventfd (0, 0); 2541 fds [1] = eventfd (0, 0);
1761 2542
1762 if (evfd >= 0) 2543 if (fds [1] < 0)
2544# endif
1763 { 2545 {
2546 while (pipe (fds))
2547 ev_syserr ("(libev) error creating signal/async pipe");
2548
2549 fd_intern (fds [0]);
2550 }
2551
1764 evpipe [0] = -1; 2552 evpipe [0] = fds [0];
1765 fd_intern (evfd); /* doing it twice doesn't hurt */ 2553
1766 ev_io_set (&pipe_w, evfd, EV_READ); 2554 if (evpipe [1] < 0)
2555 evpipe [1] = fds [1]; /* first call, set write fd */
2556 else
2557 {
2558 /* on subsequent calls, do not change evpipe [1] */
2559 /* so that evpipe_write can always rely on its value. */
2560 /* this branch does not do anything sensible on windows, */
2561 /* so must not be executed on windows */
2562
2563 dup2 (fds [1], evpipe [1]);
2564 close (fds [1]);
2565 }
2566
2567 fd_intern (evpipe [1]);
2568
2569 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2570 ev_io_start (EV_A_ &pipe_w);
2571 ev_unref (EV_A); /* watcher should not keep loop alive */
2572 }
2573}
2574
2575inline_speed void
2576evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2577{
2578 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2579
2580 if (ecb_expect_true (*flag))
2581 return;
2582
2583 *flag = 1;
2584 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2585
2586 pipe_write_skipped = 1;
2587
2588 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2589
2590 if (pipe_write_wanted)
2591 {
2592 int old_errno;
2593
2594 pipe_write_skipped = 0;
2595 ECB_MEMORY_FENCE_RELEASE;
2596
2597 old_errno = errno; /* save errno because write will clobber it */
2598
2599#if EV_USE_EVENTFD
2600 if (evpipe [0] < 0)
2601 {
2602 uint64_t counter = 1;
2603 write (evpipe [1], &counter, sizeof (uint64_t));
1767 } 2604 }
1768 else 2605 else
1769# endif 2606#endif
1770 { 2607 {
1771 while (pipe (evpipe)) 2608#ifdef _WIN32
1772 ev_syserr ("(libev) error creating signal/async pipe"); 2609 WSABUF buf;
1773 2610 DWORD sent;
1774 fd_intern (evpipe [0]); 2611 buf.buf = (char *)&buf;
1775 fd_intern (evpipe [1]); 2612 buf.len = 1;
1776 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2613 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1777 } 2614#else
1778
1779 ev_io_start (EV_A_ &pipe_w);
1780 ev_unref (EV_A); /* watcher should not keep loop alive */
1781 }
1782}
1783
1784inline_speed void
1785evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1786{
1787 if (expect_true (*flag))
1788 return;
1789
1790 *flag = 1;
1791
1792 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1793
1794 pipe_write_skipped = 1;
1795
1796 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1797
1798 if (pipe_write_wanted)
1799 {
1800 int old_errno;
1801
1802 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1803
1804 old_errno = errno; /* save errno because write will clobber it */
1805
1806#if EV_USE_EVENTFD
1807 if (evfd >= 0)
1808 {
1809 uint64_t counter = 1;
1810 write (evfd, &counter, sizeof (uint64_t));
1811 }
1812 else
1813#endif
1814 {
1815 /* win32 people keep sending patches that change this write() to send() */
1816 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1817 /* so when you think this write should be a send instead, please find out */
1818 /* where your send() is from - it's definitely not the microsoft send, and */
1819 /* tell me. thank you. */
1820 write (evpipe [1], &(evpipe [1]), 1); 2615 write (evpipe [1], &(evpipe [1]), 1);
2616#endif
1821 } 2617 }
1822 2618
1823 errno = old_errno; 2619 errno = old_errno;
1824 } 2620 }
1825} 2621}
… …
1832 int i; 2628 int i;
1833 2629
1834 if (revents & EV_READ) 2630 if (revents & EV_READ)
1835 { 2631 {
1836#if EV_USE_EVENTFD 2632#if EV_USE_EVENTFD
1837 if (evfd >= 0) 2633 if (evpipe [0] < 0)
1838 { 2634 {
1839 uint64_t counter; 2635 uint64_t counter;
1840 read (evfd, &counter, sizeof (uint64_t)); 2636 read (evpipe [1], &counter, sizeof (uint64_t));
1841 } 2637 }
1842 else 2638 else
1843#endif 2639#endif
1844 { 2640 {
1845 char dummy; 2641 char dummy[4];
1846 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2642#ifdef _WIN32
2643 WSABUF buf;
2644 DWORD recvd;
2645 DWORD flags = 0;
2646 buf.buf = dummy;
2647 buf.len = sizeof (dummy);
2648 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2649#else
1847 read (evpipe [0], &dummy, 1); 2650 read (evpipe [0], &dummy, sizeof (dummy));
2651#endif
1848 } 2652 }
1849 } 2653 }
1850 2654
1851 pipe_write_skipped = 0; 2655 pipe_write_skipped = 0;
2656
2657 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1852 2658
1853#if EV_SIGNAL_ENABLE 2659#if EV_SIGNAL_ENABLE
1854 if (sig_pending) 2660 if (sig_pending)
1855 { 2661 {
1856 sig_pending = 0; 2662 sig_pending = 0;
1857 2663
2664 ECB_MEMORY_FENCE;
2665
1858 for (i = EV_NSIG - 1; i--; ) 2666 for (i = EV_NSIG - 1; i--; )
1859 if (expect_false (signals [i].pending)) 2667 if (ecb_expect_false (signals [i].pending))
1860 ev_feed_signal_event (EV_A_ i + 1); 2668 ev_feed_signal_event (EV_A_ i + 1);
1861 } 2669 }
1862#endif 2670#endif
1863 2671
1864#if EV_ASYNC_ENABLE 2672#if EV_ASYNC_ENABLE
1865 if (async_pending) 2673 if (async_pending)
1866 { 2674 {
1867 async_pending = 0; 2675 async_pending = 0;
2676
2677 ECB_MEMORY_FENCE;
1868 2678
1869 for (i = asynccnt; i--; ) 2679 for (i = asynccnt; i--; )
1870 if (asyncs [i]->sent) 2680 if (asyncs [i]->sent)
1871 { 2681 {
1872 asyncs [i]->sent = 0; 2682 asyncs [i]->sent = 0;
2683 ECB_MEMORY_FENCE_RELEASE;
1873 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2684 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1874 } 2685 }
1875 } 2686 }
1876#endif 2687#endif
1877} 2688}
1878 2689
1879/*****************************************************************************/ 2690/*****************************************************************************/
1880 2691
1881void 2692void
1882ev_feed_signal (int signum) 2693ev_feed_signal (int signum) EV_NOEXCEPT
1883{ 2694{
1884#if EV_MULTIPLICITY 2695#if EV_MULTIPLICITY
2696 EV_P;
2697 ECB_MEMORY_FENCE_ACQUIRE;
1885 EV_P = signals [signum - 1].loop; 2698 EV_A = signals [signum - 1].loop;
1886 2699
1887 if (!EV_A) 2700 if (!EV_A)
1888 return; 2701 return;
1889#endif 2702#endif
1890 2703
1891 if (!ev_active (&pipe_w))
1892 return;
1893
1894 signals [signum - 1].pending = 1; 2704 signals [signum - 1].pending = 1;
1895 evpipe_write (EV_A_ &sig_pending); 2705 evpipe_write (EV_A_ &sig_pending);
1896} 2706}
1897 2707
1898static void 2708static void
… …
1903#endif 2713#endif
1904 2714
1905 ev_feed_signal (signum); 2715 ev_feed_signal (signum);
1906} 2716}
1907 2717
1908void noinline 2718ecb_noinline
2719void
1909ev_feed_signal_event (EV_P_ int signum) 2720ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1910{ 2721{
1911 WL w; 2722 WL w;
1912 2723
1913 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2724 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
1914 return; 2725 return;
1915 2726
1916 --signum; 2727 --signum;
1917 2728
1918#if EV_MULTIPLICITY 2729#if EV_MULTIPLICITY
1919 /* it is permissible to try to feed a signal to the wrong loop */ 2730 /* it is permissible to try to feed a signal to the wrong loop */
1920 /* or, likely more useful, feeding a signal nobody is waiting for */ 2731 /* or, likely more useful, feeding a signal nobody is waiting for */
1921 2732
1922 if (expect_false (signals [signum].loop != EV_A)) 2733 if (ecb_expect_false (signals [signum].loop != EV_A))
1923 return; 2734 return;
1924#endif 2735#endif
1925 2736
1926 signals [signum].pending = 0; 2737 signals [signum].pending = 0;
2738 ECB_MEMORY_FENCE_RELEASE;
1927 2739
1928 for (w = signals [signum].head; w; w = w->next) 2740 for (w = signals [signum].head; w; w = w->next)
1929 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2741 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1930} 2742}
1931 2743
… …
2022# include "ev_kqueue.c" 2834# include "ev_kqueue.c"
2023#endif 2835#endif
2024#if EV_USE_EPOLL 2836#if EV_USE_EPOLL
2025# include "ev_epoll.c" 2837# include "ev_epoll.c"
2026#endif 2838#endif
2839#if EV_USE_LINUXAIO
2840# include "ev_linuxaio.c"
2841#endif
2842#if EV_USE_IOURING
2843# include "ev_iouring.c"
2844#endif
2027#if EV_USE_POLL 2845#if EV_USE_POLL
2028# include "ev_poll.c" 2846# include "ev_poll.c"
2029#endif 2847#endif
2030#if EV_USE_SELECT 2848#if EV_USE_SELECT
2031# include "ev_select.c" 2849# include "ev_select.c"
2032#endif 2850#endif
2033 2851
2034int ecb_cold 2852ecb_cold int
2035ev_version_major (void) 2853ev_version_major (void) EV_NOEXCEPT
2036{ 2854{
2037 return EV_VERSION_MAJOR; 2855 return EV_VERSION_MAJOR;
2038} 2856}
2039 2857
2040int ecb_cold 2858ecb_cold int
2041ev_version_minor (void) 2859ev_version_minor (void) EV_NOEXCEPT
2042{ 2860{
2043 return EV_VERSION_MINOR; 2861 return EV_VERSION_MINOR;
2044} 2862}
2045 2863
2046/* return true if we are running with elevated privileges and should ignore env variables */ 2864/* return true if we are running with elevated privileges and should ignore env variables */
2047int inline_size ecb_cold 2865inline_size ecb_cold int
2048enable_secure (void) 2866enable_secure (void)
2049{ 2867{
2050#ifdef _WIN32 2868#ifdef _WIN32
2051 return 0; 2869 return 0;
2052#else 2870#else
2053 return getuid () != geteuid () 2871 return getuid () != geteuid ()
2054 || getgid () != getegid (); 2872 || getgid () != getegid ();
2055#endif 2873#endif
2056} 2874}
2057 2875
2058unsigned int ecb_cold 2876ecb_cold
2877unsigned int
2059ev_supported_backends (void) 2878ev_supported_backends (void) EV_NOEXCEPT
2060{ 2879{
2061 unsigned int flags = 0; 2880 unsigned int flags = 0;
2062 2881
2063 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2882 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2064 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2883 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
2065 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2884 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2885 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
2886 if (EV_USE_IOURING ) flags |= EVBACKEND_IOURING;
2066 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2887 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
2067 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2888 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
2068 2889
2069 return flags; 2890 return flags;
2070} 2891}
2071 2892
2072unsigned int ecb_cold 2893ecb_cold
2894unsigned int
2073ev_recommended_backends (void) 2895ev_recommended_backends (void) EV_NOEXCEPT
2074{ 2896{
2075 unsigned int flags = ev_supported_backends (); 2897 unsigned int flags = ev_supported_backends ();
2076 2898
2077#ifndef __NetBSD__ 2899#ifndef __NetBSD__
2078 /* kqueue is borked on everything but netbsd apparently */ 2900 /* kqueue is borked on everything but netbsd apparently */
… …
2086#endif 2908#endif
2087#ifdef __FreeBSD__ 2909#ifdef __FreeBSD__
2088 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ 2910 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2089#endif 2911#endif
2090 2912
2913 /* TODO: linuxaio is very experimental */
2914#if !EV_RECOMMEND_LINUXAIO
2915 flags &= ~EVBACKEND_LINUXAIO;
2916#endif
2917 /* TODO: linuxaio is super experimental */
2918#if !EV_RECOMMEND_IOURING
2919 flags &= ~EVBACKEND_IOURING;
2920#endif
2921
2091 return flags; 2922 return flags;
2092} 2923}
2093 2924
2094unsigned int ecb_cold 2925ecb_cold
2926unsigned int
2095ev_embeddable_backends (void) 2927ev_embeddable_backends (void) EV_NOEXCEPT
2096{ 2928{
2097 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2929 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2098 2930
2099 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2931 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2100 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 2932 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2101 flags &= ~EVBACKEND_EPOLL; 2933 flags &= ~EVBACKEND_EPOLL;
2102 2934
2935 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
2936
2937 /* EVBACKEND_IOURING is practically embeddable, but the current implementation is not
2938 * because our backend_fd is the epoll fd we need as fallback.
2939 * if the kernel ever is fixed, this might change...
2940 */
2941
2103 return flags; 2942 return flags;
2104} 2943}
2105 2944
2106unsigned int 2945unsigned int
2107ev_backend (EV_P) 2946ev_backend (EV_P) EV_NOEXCEPT
2108{ 2947{
2109 return backend; 2948 return backend;
2110} 2949}
2111 2950
2112#if EV_FEATURE_API 2951#if EV_FEATURE_API
2113unsigned int 2952unsigned int
2114ev_iteration (EV_P) 2953ev_iteration (EV_P) EV_NOEXCEPT
2115{ 2954{
2116 return loop_count; 2955 return loop_count;
2117} 2956}
2118 2957
2119unsigned int 2958unsigned int
2120ev_depth (EV_P) 2959ev_depth (EV_P) EV_NOEXCEPT
2121{ 2960{
2122 return loop_depth; 2961 return loop_depth;
2123} 2962}
2124 2963
2125void 2964void
2126ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2965ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2127{ 2966{
2128 io_blocktime = interval; 2967 io_blocktime = interval;
2129} 2968}
2130 2969
2131void 2970void
2132ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2971ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2133{ 2972{
2134 timeout_blocktime = interval; 2973 timeout_blocktime = interval;
2135} 2974}
2136 2975
2137void 2976void
2138ev_set_userdata (EV_P_ void *data) 2977ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2139{ 2978{
2140 userdata = data; 2979 userdata = data;
2141} 2980}
2142 2981
2143void * 2982void *
2144ev_userdata (EV_P) 2983ev_userdata (EV_P) EV_NOEXCEPT
2145{ 2984{
2146 return userdata; 2985 return userdata;
2147} 2986}
2148 2987
2149void 2988void
2150ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2989ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
2151{ 2990{
2152 invoke_cb = invoke_pending_cb; 2991 invoke_cb = invoke_pending_cb;
2153} 2992}
2154 2993
2155void 2994void
2156ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2995ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
2157{ 2996{
2158 release_cb = release; 2997 release_cb = release;
2159 acquire_cb = acquire; 2998 acquire_cb = acquire;
2160} 2999}
2161#endif 3000#endif
2162 3001
2163/* initialise a loop structure, must be zero-initialised */ 3002/* initialise a loop structure, must be zero-initialised */
2164static void noinline ecb_cold 3003ecb_noinline ecb_cold
3004static void
2165loop_init (EV_P_ unsigned int flags) 3005loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
2166{ 3006{
2167 if (!backend) 3007 if (!backend)
2168 { 3008 {
2169 origflags = flags; 3009 origflags = flags;
2170 3010
… …
2215#if EV_ASYNC_ENABLE 3055#if EV_ASYNC_ENABLE
2216 async_pending = 0; 3056 async_pending = 0;
2217#endif 3057#endif
2218 pipe_write_skipped = 0; 3058 pipe_write_skipped = 0;
2219 pipe_write_wanted = 0; 3059 pipe_write_wanted = 0;
3060 evpipe [0] = -1;
3061 evpipe [1] = -1;
2220#if EV_USE_INOTIFY 3062#if EV_USE_INOTIFY
2221 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3063 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2222#endif 3064#endif
2223#if EV_USE_SIGNALFD 3065#if EV_USE_SIGNALFD
2224 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 3066 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
… …
2226 3068
2227 if (!(flags & EVBACKEND_MASK)) 3069 if (!(flags & EVBACKEND_MASK))
2228 flags |= ev_recommended_backends (); 3070 flags |= ev_recommended_backends ();
2229 3071
2230#if EV_USE_IOCP 3072#if EV_USE_IOCP
2231 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 3073 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2232#endif 3074#endif
2233#if EV_USE_PORT 3075#if EV_USE_PORT
2234 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3076 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
2235#endif 3077#endif
2236#if EV_USE_KQUEUE 3078#if EV_USE_KQUEUE
2237 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 3079 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
3080#endif
3081#if EV_USE_IOURING
3082 if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
3083#endif
3084#if EV_USE_LINUXAIO
3085 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
2238#endif 3086#endif
2239#if EV_USE_EPOLL 3087#if EV_USE_EPOLL
2240 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3088 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
2241#endif 3089#endif
2242#if EV_USE_POLL 3090#if EV_USE_POLL
2243 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3091 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
2244#endif 3092#endif
2245#if EV_USE_SELECT 3093#if EV_USE_SELECT
2246 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3094 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
2247#endif 3095#endif
2248 3096
2249 ev_prepare_init (&pending_w, pendingcb); 3097 ev_prepare_init (&pending_w, pendingcb);
2250 3098
2251#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3099#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
2254#endif 3102#endif
2255 } 3103 }
2256} 3104}
2257 3105
2258/* free up a loop structure */ 3106/* free up a loop structure */
2259void ecb_cold 3107ecb_cold
3108void
2260ev_loop_destroy (EV_P) 3109ev_loop_destroy (EV_P)
2261{ 3110{
2262 int i; 3111 int i;
2263 3112
2264#if EV_MULTIPLICITY 3113#if EV_MULTIPLICITY
… …
2267 return; 3116 return;
2268#endif 3117#endif
2269 3118
2270#if EV_CLEANUP_ENABLE 3119#if EV_CLEANUP_ENABLE
2271 /* queue cleanup watchers (and execute them) */ 3120 /* queue cleanup watchers (and execute them) */
2272 if (expect_false (cleanupcnt)) 3121 if (ecb_expect_false (cleanupcnt))
2273 { 3122 {
2274 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); 3123 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2275 EV_INVOKE_PENDING; 3124 EV_INVOKE_PENDING;
2276 } 3125 }
2277#endif 3126#endif
2278 3127
2279#if EV_CHILD_ENABLE 3128#if EV_CHILD_ENABLE
2280 if (ev_is_active (&childev)) 3129 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2281 { 3130 {
2282 ev_ref (EV_A); /* child watcher */ 3131 ev_ref (EV_A); /* child watcher */
2283 ev_signal_stop (EV_A_ &childev); 3132 ev_signal_stop (EV_A_ &childev);
2284 } 3133 }
2285#endif 3134#endif
… …
2287 if (ev_is_active (&pipe_w)) 3136 if (ev_is_active (&pipe_w))
2288 { 3137 {
2289 /*ev_ref (EV_A);*/ 3138 /*ev_ref (EV_A);*/
2290 /*ev_io_stop (EV_A_ &pipe_w);*/ 3139 /*ev_io_stop (EV_A_ &pipe_w);*/
2291 3140
2292#if EV_USE_EVENTFD
2293 if (evfd >= 0)
2294 close (evfd);
2295#endif
2296
2297 if (evpipe [0] >= 0)
2298 {
2299 EV_WIN32_CLOSE_FD (evpipe [0]); 3141 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2300 EV_WIN32_CLOSE_FD (evpipe [1]); 3142 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2301 }
2302 } 3143 }
2303 3144
2304#if EV_USE_SIGNALFD 3145#if EV_USE_SIGNALFD
2305 if (ev_is_active (&sigfd_w)) 3146 if (ev_is_active (&sigfd_w))
2306 close (sigfd); 3147 close (sigfd);
… …
2313 3154
2314 if (backend_fd >= 0) 3155 if (backend_fd >= 0)
2315 close (backend_fd); 3156 close (backend_fd);
2316 3157
2317#if EV_USE_IOCP 3158#if EV_USE_IOCP
2318 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3159 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2319#endif 3160#endif
2320#if EV_USE_PORT 3161#if EV_USE_PORT
2321 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3162 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
2322#endif 3163#endif
2323#if EV_USE_KQUEUE 3164#if EV_USE_KQUEUE
2324 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3165 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3166#endif
3167#if EV_USE_IOURING
3168 if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
3169#endif
3170#if EV_USE_LINUXAIO
3171 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
2325#endif 3172#endif
2326#if EV_USE_EPOLL 3173#if EV_USE_EPOLL
2327 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3174 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
2328#endif 3175#endif
2329#if EV_USE_POLL 3176#if EV_USE_POLL
2330 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3177 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
2331#endif 3178#endif
2332#if EV_USE_SELECT 3179#if EV_USE_SELECT
2333 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3180 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
2334#endif 3181#endif
2335 3182
2336 for (i = NUMPRI; i--; ) 3183 for (i = NUMPRI; i--; )
2337 { 3184 {
2338 array_free (pending, [i]); 3185 array_free (pending, [i]);
… …
2380 3227
2381inline_size void 3228inline_size void
2382loop_fork (EV_P) 3229loop_fork (EV_P)
2383{ 3230{
2384#if EV_USE_PORT 3231#if EV_USE_PORT
2385 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3232 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
2386#endif 3233#endif
2387#if EV_USE_KQUEUE 3234#if EV_USE_KQUEUE
2388 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3235 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3236#endif
3237#if EV_USE_IOURING
3238 if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
3239#endif
3240#if EV_USE_LINUXAIO
3241 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
2389#endif 3242#endif
2390#if EV_USE_EPOLL 3243#if EV_USE_EPOLL
2391 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3244 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
2392#endif 3245#endif
2393#if EV_USE_INOTIFY 3246#if EV_USE_INOTIFY
2394 infy_fork (EV_A); 3247 infy_fork (EV_A);
2395#endif 3248#endif
2396 3249
3250#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2397 if (ev_is_active (&pipe_w)) 3251 if (ev_is_active (&pipe_w) && postfork != 2)
2398 { 3252 {
2399 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 3253 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2400 3254
2401 ev_ref (EV_A); 3255 ev_ref (EV_A);
2402 ev_io_stop (EV_A_ &pipe_w); 3256 ev_io_stop (EV_A_ &pipe_w);
2403 3257
2404#if EV_USE_EVENTFD
2405 if (evfd >= 0)
2406 close (evfd);
2407#endif
2408
2409 if (evpipe [0] >= 0) 3258 if (evpipe [0] >= 0)
2410 {
2411 EV_WIN32_CLOSE_FD (evpipe [0]); 3259 EV_WIN32_CLOSE_FD (evpipe [0]);
2412 EV_WIN32_CLOSE_FD (evpipe [1]);
2413 }
2414 3260
2415#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2416 evpipe_init (EV_A); 3261 evpipe_init (EV_A);
2417 /* now iterate over everything, in case we missed something */ 3262 /* iterate over everything, in case we missed something before */
2418 pipecb (EV_A_ &pipe_w, EV_READ); 3263 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2419#endif
2420 } 3264 }
3265#endif
2421 3266
2422 postfork = 0; 3267 postfork = 0;
2423} 3268}
2424 3269
2425#if EV_MULTIPLICITY 3270#if EV_MULTIPLICITY
2426 3271
3272ecb_cold
2427struct ev_loop * ecb_cold 3273struct ev_loop *
2428ev_loop_new (unsigned int flags) 3274ev_loop_new (unsigned int flags) EV_NOEXCEPT
2429{ 3275{
2430 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3276 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2431 3277
2432 memset (EV_A, 0, sizeof (struct ev_loop)); 3278 memset (EV_A, 0, sizeof (struct ev_loop));
2433 loop_init (EV_A_ flags); 3279 loop_init (EV_A_ flags);
… …
2440} 3286}
2441 3287
2442#endif /* multiplicity */ 3288#endif /* multiplicity */
2443 3289
2444#if EV_VERIFY 3290#if EV_VERIFY
2445static void noinline ecb_cold 3291ecb_noinline ecb_cold
3292static void
2446verify_watcher (EV_P_ W w) 3293verify_watcher (EV_P_ W w)
2447{ 3294{
2448 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3295 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2449 3296
2450 if (w->pending) 3297 if (w->pending)
2451 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3298 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2452} 3299}
2453 3300
2454static void noinline ecb_cold 3301ecb_noinline ecb_cold
3302static void
2455verify_heap (EV_P_ ANHE *heap, int N) 3303verify_heap (EV_P_ ANHE *heap, int N)
2456{ 3304{
2457 int i; 3305 int i;
2458 3306
2459 for (i = HEAP0; i < N + HEAP0; ++i) 3307 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2464 3312
2465 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3313 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2466 } 3314 }
2467} 3315}
2468 3316
2469static void noinline ecb_cold 3317ecb_noinline ecb_cold
3318static void
2470array_verify (EV_P_ W *ws, int cnt) 3319array_verify (EV_P_ W *ws, int cnt)
2471{ 3320{
2472 while (cnt--) 3321 while (cnt--)
2473 { 3322 {
2474 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3323 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2477} 3326}
2478#endif 3327#endif
2479 3328
2480#if EV_FEATURE_API 3329#if EV_FEATURE_API
2481void ecb_cold 3330void ecb_cold
2482ev_verify (EV_P) 3331ev_verify (EV_P) EV_NOEXCEPT
2483{ 3332{
2484#if EV_VERIFY 3333#if EV_VERIFY
2485 int i; 3334 int i;
2486 WL w; 3335 WL w, w2;
2487 3336
2488 assert (activecnt >= -1); 3337 assert (activecnt >= -1);
2489 3338
2490 assert (fdchangemax >= fdchangecnt); 3339 assert (fdchangemax >= fdchangecnt);
2491 for (i = 0; i < fdchangecnt; ++i) 3340 for (i = 0; i < fdchangecnt; ++i)
2492 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3341 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2493 3342
2494 assert (anfdmax >= 0); 3343 assert (anfdmax >= 0);
2495 for (i = 0; i < anfdmax; ++i) 3344 for (i = 0; i < anfdmax; ++i)
3345 {
3346 int j = 0;
3347
2496 for (w = anfds [i].head; w; w = w->next) 3348 for (w = w2 = anfds [i].head; w; w = w->next)
2497 { 3349 {
2498 verify_watcher (EV_A_ (W)w); 3350 verify_watcher (EV_A_ (W)w);
3351
3352 if (j++ & 1)
3353 {
3354 assert (("libev: io watcher list contains a loop", w != w2));
3355 w2 = w2->next;
3356 }
3357
2499 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3358 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2500 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3359 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2501 } 3360 }
3361 }
2502 3362
2503 assert (timermax >= timercnt); 3363 assert (timermax >= timercnt);
2504 verify_heap (EV_A_ timers, timercnt); 3364 verify_heap (EV_A_ timers, timercnt);
2505 3365
2506#if EV_PERIODIC_ENABLE 3366#if EV_PERIODIC_ENABLE
… …
2552#endif 3412#endif
2553} 3413}
2554#endif 3414#endif
2555 3415
2556#if EV_MULTIPLICITY 3416#if EV_MULTIPLICITY
3417ecb_cold
2557struct ev_loop * ecb_cold 3418struct ev_loop *
2558#else 3419#else
2559int 3420int
2560#endif 3421#endif
2561ev_default_loop (unsigned int flags) 3422ev_default_loop (unsigned int flags) EV_NOEXCEPT
2562{ 3423{
2563 if (!ev_default_loop_ptr) 3424 if (!ev_default_loop_ptr)
2564 { 3425 {
2565#if EV_MULTIPLICITY 3426#if EV_MULTIPLICITY
2566 EV_P = ev_default_loop_ptr = &default_loop_struct; 3427 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2585 3446
2586 return ev_default_loop_ptr; 3447 return ev_default_loop_ptr;
2587} 3448}
2588 3449
2589void 3450void
2590ev_loop_fork (EV_P) 3451ev_loop_fork (EV_P) EV_NOEXCEPT
2591{ 3452{
2592 postfork = 1; /* must be in line with ev_default_fork */ 3453 postfork = 1;
2593} 3454}
2594 3455
2595/*****************************************************************************/ 3456/*****************************************************************************/
2596 3457
2597void 3458void
… …
2599{ 3460{
2600 EV_CB_INVOKE ((W)w, revents); 3461 EV_CB_INVOKE ((W)w, revents);
2601} 3462}
2602 3463
2603unsigned int 3464unsigned int
2604ev_pending_count (EV_P) 3465ev_pending_count (EV_P) EV_NOEXCEPT
2605{ 3466{
2606 int pri; 3467 int pri;
2607 unsigned int count = 0; 3468 unsigned int count = 0;
2608 3469
2609 for (pri = NUMPRI; pri--; ) 3470 for (pri = NUMPRI; pri--; )
2610 count += pendingcnt [pri]; 3471 count += pendingcnt [pri];
2611 3472
2612 return count; 3473 return count;
2613} 3474}
2614 3475
2615void noinline 3476ecb_noinline
3477void
2616ev_invoke_pending (EV_P) 3478ev_invoke_pending (EV_P)
2617{ 3479{
2618 int pri; 3480 pendingpri = NUMPRI;
2619 3481
2620 for (pri = NUMPRI; pri--; ) 3482 do
3483 {
3484 --pendingpri;
3485
3486 /* pendingpri possibly gets modified in the inner loop */
2621 while (pendingcnt [pri]) 3487 while (pendingcnt [pendingpri])
2622 { 3488 {
2623 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3489 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2624 3490
2625 p->w->pending = 0; 3491 p->w->pending = 0;
2626 EV_CB_INVOKE (p->w, p->events); 3492 EV_CB_INVOKE (p->w, p->events);
2627 EV_FREQUENT_CHECK; 3493 EV_FREQUENT_CHECK;
2628 } 3494 }
3495 }
3496 while (pendingpri);
2629} 3497}
2630 3498
2631#if EV_IDLE_ENABLE 3499#if EV_IDLE_ENABLE
2632/* make idle watchers pending. this handles the "call-idle */ 3500/* make idle watchers pending. this handles the "call-idle */
2633/* only when higher priorities are idle" logic */ 3501/* only when higher priorities are idle" logic */
2634inline_size void 3502inline_size void
2635idle_reify (EV_P) 3503idle_reify (EV_P)
2636{ 3504{
2637 if (expect_false (idleall)) 3505 if (ecb_expect_false (idleall))
2638 { 3506 {
2639 int pri; 3507 int pri;
2640 3508
2641 for (pri = NUMPRI; pri--; ) 3509 for (pri = NUMPRI; pri--; )
2642 { 3510 {
… …
2691 } 3559 }
2692} 3560}
2693 3561
2694#if EV_PERIODIC_ENABLE 3562#if EV_PERIODIC_ENABLE
2695 3563
2696static void noinline 3564ecb_noinline
3565static void
2697periodic_recalc (EV_P_ ev_periodic *w) 3566periodic_recalc (EV_P_ ev_periodic *w)
2698{ 3567{
2699 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3568 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2700 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); 3569 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2701 3570
… …
2703 while (at <= ev_rt_now) 3572 while (at <= ev_rt_now)
2704 { 3573 {
2705 ev_tstamp nat = at + w->interval; 3574 ev_tstamp nat = at + w->interval;
2706 3575
2707 /* when resolution fails us, we use ev_rt_now */ 3576 /* when resolution fails us, we use ev_rt_now */
2708 if (expect_false (nat == at)) 3577 if (ecb_expect_false (nat == at))
2709 { 3578 {
2710 at = ev_rt_now; 3579 at = ev_rt_now;
2711 break; 3580 break;
2712 } 3581 }
2713 3582
… …
2723{ 3592{
2724 EV_FREQUENT_CHECK; 3593 EV_FREQUENT_CHECK;
2725 3594
2726 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3595 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2727 { 3596 {
2728 int feed_count = 0;
2729
2730 do 3597 do
2731 { 3598 {
2732 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3599 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2733 3600
2734 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3601 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2761 } 3628 }
2762} 3629}
2763 3630
2764/* simply recalculate all periodics */ 3631/* simply recalculate all periodics */
2765/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3632/* TODO: maybe ensure that at least one event happens when jumping forward? */
2766static void noinline ecb_cold 3633ecb_noinline ecb_cold
3634static void
2767periodics_reschedule (EV_P) 3635periodics_reschedule (EV_P)
2768{ 3636{
2769 int i; 3637 int i;
2770 3638
2771 /* adjust periodics after time jump */ 3639 /* adjust periodics after time jump */
… …
2784 reheap (periodics, periodiccnt); 3652 reheap (periodics, periodiccnt);
2785} 3653}
2786#endif 3654#endif
2787 3655
2788/* adjust all timers by a given offset */ 3656/* adjust all timers by a given offset */
2789static void noinline ecb_cold 3657ecb_noinline ecb_cold
3658static void
2790timers_reschedule (EV_P_ ev_tstamp adjust) 3659timers_reschedule (EV_P_ ev_tstamp adjust)
2791{ 3660{
2792 int i; 3661 int i;
2793 3662
2794 for (i = 0; i < timercnt; ++i) 3663 for (i = 0; i < timercnt; ++i)
… …
2803/* also detect if there was a timejump, and act accordingly */ 3672/* also detect if there was a timejump, and act accordingly */
2804inline_speed void 3673inline_speed void
2805time_update (EV_P_ ev_tstamp max_block) 3674time_update (EV_P_ ev_tstamp max_block)
2806{ 3675{
2807#if EV_USE_MONOTONIC 3676#if EV_USE_MONOTONIC
2808 if (expect_true (have_monotonic)) 3677 if (ecb_expect_true (have_monotonic))
2809 { 3678 {
2810 int i; 3679 int i;
2811 ev_tstamp odiff = rtmn_diff; 3680 ev_tstamp odiff = rtmn_diff;
2812 3681
2813 mn_now = get_clock (); 3682 mn_now = get_clock ();
2814 3683
2815 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3684 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2816 /* interpolate in the meantime */ 3685 /* interpolate in the meantime */
2817 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3686 if (ecb_expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
2818 { 3687 {
2819 ev_rt_now = rtmn_diff + mn_now; 3688 ev_rt_now = rtmn_diff + mn_now;
2820 return; 3689 return;
2821 } 3690 }
2822 3691
… …
2836 ev_tstamp diff; 3705 ev_tstamp diff;
2837 rtmn_diff = ev_rt_now - mn_now; 3706 rtmn_diff = ev_rt_now - mn_now;
2838 3707
2839 diff = odiff - rtmn_diff; 3708 diff = odiff - rtmn_diff;
2840 3709
2841 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP)) 3710 if (ecb_expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2842 return; /* all is well */ 3711 return; /* all is well */
2843 3712
2844 ev_rt_now = ev_time (); 3713 ev_rt_now = ev_time ();
2845 mn_now = get_clock (); 3714 mn_now = get_clock ();
2846 now_floor = mn_now; 3715 now_floor = mn_now;
… …
2855 else 3724 else
2856#endif 3725#endif
2857 { 3726 {
2858 ev_rt_now = ev_time (); 3727 ev_rt_now = ev_time ();
2859 3728
2860 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 3729 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
2861 { 3730 {
2862 /* adjust timers. this is easy, as the offset is the same for all of them */ 3731 /* adjust timers. this is easy, as the offset is the same for all of them */
2863 timers_reschedule (EV_A_ ev_rt_now - mn_now); 3732 timers_reschedule (EV_A_ ev_rt_now - mn_now);
2864#if EV_PERIODIC_ENABLE 3733#if EV_PERIODIC_ENABLE
2865 periodics_reschedule (EV_A); 3734 periodics_reschedule (EV_A);
… …
2868 3737
2869 mn_now = ev_rt_now; 3738 mn_now = ev_rt_now;
2870 } 3739 }
2871} 3740}
2872 3741
2873void 3742int
2874ev_run (EV_P_ int flags) 3743ev_run (EV_P_ int flags)
2875{ 3744{
2876#if EV_FEATURE_API 3745#if EV_FEATURE_API
2877 ++loop_depth; 3746 ++loop_depth;
2878#endif 3747#endif
… …
2888#if EV_VERIFY >= 2 3757#if EV_VERIFY >= 2
2889 ev_verify (EV_A); 3758 ev_verify (EV_A);
2890#endif 3759#endif
2891 3760
2892#ifndef _WIN32 3761#ifndef _WIN32
2893 if (expect_false (curpid)) /* penalise the forking check even more */ 3762 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
2894 if (expect_false (getpid () != curpid)) 3763 if (ecb_expect_false (getpid () != curpid))
2895 { 3764 {
2896 curpid = getpid (); 3765 curpid = getpid ();
2897 postfork = 1; 3766 postfork = 1;
2898 } 3767 }
2899#endif 3768#endif
2900 3769
2901#if EV_FORK_ENABLE 3770#if EV_FORK_ENABLE
2902 /* we might have forked, so queue fork handlers */ 3771 /* we might have forked, so queue fork handlers */
2903 if (expect_false (postfork)) 3772 if (ecb_expect_false (postfork))
2904 if (forkcnt) 3773 if (forkcnt)
2905 { 3774 {
2906 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3775 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2907 EV_INVOKE_PENDING; 3776 EV_INVOKE_PENDING;
2908 } 3777 }
2909#endif 3778#endif
2910 3779
2911#if EV_PREPARE_ENABLE 3780#if EV_PREPARE_ENABLE
2912 /* queue prepare watchers (and execute them) */ 3781 /* queue prepare watchers (and execute them) */
2913 if (expect_false (preparecnt)) 3782 if (ecb_expect_false (preparecnt))
2914 { 3783 {
2915 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3784 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2916 EV_INVOKE_PENDING; 3785 EV_INVOKE_PENDING;
2917 } 3786 }
2918#endif 3787#endif
2919 3788
2920 if (expect_false (loop_done)) 3789 if (ecb_expect_false (loop_done))
2921 break; 3790 break;
2922 3791
2923 /* we might have forked, so reify kernel state if necessary */ 3792 /* we might have forked, so reify kernel state if necessary */
2924 if (expect_false (postfork)) 3793 if (ecb_expect_false (postfork))
2925 loop_fork (EV_A); 3794 loop_fork (EV_A);
2926 3795
2927 /* update fd-related kernel structures */ 3796 /* update fd-related kernel structures */
2928 fd_reify (EV_A); 3797 fd_reify (EV_A);
2929 3798
… …
2941 /* from now on, we want a pipe-wake-up */ 3810 /* from now on, we want a pipe-wake-up */
2942 pipe_write_wanted = 1; 3811 pipe_write_wanted = 1;
2943 3812
2944 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */ 3813 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
2945 3814
2946 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) 3815 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2947 { 3816 {
2948 waittime = MAX_BLOCKTIME; 3817 waittime = MAX_BLOCKTIME;
2949 3818
2950 if (timercnt) 3819 if (timercnt)
2951 { 3820 {
… …
2960 if (waittime > to) waittime = to; 3829 if (waittime > to) waittime = to;
2961 } 3830 }
2962#endif 3831#endif
2963 3832
2964 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3833 /* don't let timeouts decrease the waittime below timeout_blocktime */
2965 if (expect_false (waittime < timeout_blocktime)) 3834 if (ecb_expect_false (waittime < timeout_blocktime))
2966 waittime = timeout_blocktime; 3835 waittime = timeout_blocktime;
2967 3836
2968 /* at this point, we NEED to wait, so we have to ensure */ 3837 /* at this point, we NEED to wait, so we have to ensure */
2969 /* to pass a minimum nonzero value to the backend */ 3838 /* to pass a minimum nonzero value to the backend */
2970 if (expect_false (waittime < backend_mintime)) 3839 if (ecb_expect_false (waittime < backend_mintime))
2971 waittime = backend_mintime; 3840 waittime = backend_mintime;
2972 3841
2973 /* extra check because io_blocktime is commonly 0 */ 3842 /* extra check because io_blocktime is commonly 0 */
2974 if (expect_false (io_blocktime)) 3843 if (ecb_expect_false (io_blocktime))
2975 { 3844 {
2976 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3845 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2977 3846
2978 if (sleeptime > waittime - backend_mintime) 3847 if (sleeptime > waittime - backend_mintime)
2979 sleeptime = waittime - backend_mintime; 3848 sleeptime = waittime - backend_mintime;
2980 3849
2981 if (expect_true (sleeptime > 0.)) 3850 if (ecb_expect_true (sleeptime > 0.))
2982 { 3851 {
2983 ev_sleep (sleeptime); 3852 ev_sleep (sleeptime);
2984 waittime -= sleeptime; 3853 waittime -= sleeptime;
2985 } 3854 }
2986 } 3855 }
… …
2991#endif 3860#endif
2992 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ 3861 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2993 backend_poll (EV_A_ waittime); 3862 backend_poll (EV_A_ waittime);
2994 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3863 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2995 3864
2996 pipe_write_wanted = 0; /* just an optimsiation, no fence needed */ 3865 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
2997 3866
3867 ECB_MEMORY_FENCE_ACQUIRE;
2998 if (pipe_write_skipped) 3868 if (pipe_write_skipped)
2999 { 3869 {
3000 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 3870 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3001 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3871 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3002 } 3872 }
3003 3873
3004
3005 /* update ev_rt_now, do magic */ 3874 /* update ev_rt_now, do magic */
3006 time_update (EV_A_ waittime + sleeptime); 3875 time_update (EV_A_ waittime + sleeptime);
3007 } 3876 }
3008 3877
3009 /* queue pending timers and reschedule them */ 3878 /* queue pending timers and reschedule them */
… …
3017 idle_reify (EV_A); 3886 idle_reify (EV_A);
3018#endif 3887#endif
3019 3888
3020#if EV_CHECK_ENABLE 3889#if EV_CHECK_ENABLE
3021 /* queue check watchers, to be executed first */ 3890 /* queue check watchers, to be executed first */
3022 if (expect_false (checkcnt)) 3891 if (ecb_expect_false (checkcnt))
3023 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3892 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3024#endif 3893#endif
3025 3894
3026 EV_INVOKE_PENDING; 3895 EV_INVOKE_PENDING;
3027 } 3896 }
3028 while (expect_true ( 3897 while (ecb_expect_true (
3029 activecnt 3898 activecnt
3030 && !loop_done 3899 && !loop_done
3031 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) 3900 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
3032 )); 3901 ));
3033 3902
… …
3035 loop_done = EVBREAK_CANCEL; 3904 loop_done = EVBREAK_CANCEL;
3036 3905
3037#if EV_FEATURE_API 3906#if EV_FEATURE_API
3038 --loop_depth; 3907 --loop_depth;
3039#endif 3908#endif
3040}
3041 3909
3910 return activecnt;
3911}
3912
3042void 3913void
3043ev_break (EV_P_ int how) 3914ev_break (EV_P_ int how) EV_NOEXCEPT
3044{ 3915{
3045 loop_done = how; 3916 loop_done = how;
3046} 3917}
3047 3918
3048void 3919void
3049ev_ref (EV_P) 3920ev_ref (EV_P) EV_NOEXCEPT
3050{ 3921{
3051 ++activecnt; 3922 ++activecnt;
3052} 3923}
3053 3924
3054void 3925void
3055ev_unref (EV_P) 3926ev_unref (EV_P) EV_NOEXCEPT
3056{ 3927{
3057 --activecnt; 3928 --activecnt;
3058} 3929}
3059 3930
3060void 3931void
3061ev_now_update (EV_P) 3932ev_now_update (EV_P) EV_NOEXCEPT
3062{ 3933{
3063 time_update (EV_A_ 1e100); 3934 time_update (EV_A_ 1e100);
3064} 3935}
3065 3936
3066void 3937void
3067ev_suspend (EV_P) 3938ev_suspend (EV_P) EV_NOEXCEPT
3068{ 3939{
3069 ev_now_update (EV_A); 3940 ev_now_update (EV_A);
3070} 3941}
3071 3942
3072void 3943void
3073ev_resume (EV_P) 3944ev_resume (EV_P) EV_NOEXCEPT
3074{ 3945{
3075 ev_tstamp mn_prev = mn_now; 3946 ev_tstamp mn_prev = mn_now;
3076 3947
3077 ev_now_update (EV_A); 3948 ev_now_update (EV_A);
3078 timers_reschedule (EV_A_ mn_now - mn_prev); 3949 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
3095inline_size void 3966inline_size void
3096wlist_del (WL *head, WL elem) 3967wlist_del (WL *head, WL elem)
3097{ 3968{
3098 while (*head) 3969 while (*head)
3099 { 3970 {
3100 if (expect_true (*head == elem)) 3971 if (ecb_expect_true (*head == elem))
3101 { 3972 {
3102 *head = elem->next; 3973 *head = elem->next;
3103 break; 3974 break;
3104 } 3975 }
3105 3976
… …
3117 w->pending = 0; 3988 w->pending = 0;
3118 } 3989 }
3119} 3990}
3120 3991
3121int 3992int
3122ev_clear_pending (EV_P_ void *w) 3993ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
3123{ 3994{
3124 W w_ = (W)w; 3995 W w_ = (W)w;
3125 int pending = w_->pending; 3996 int pending = w_->pending;
3126 3997
3127 if (expect_true (pending)) 3998 if (ecb_expect_true (pending))
3128 { 3999 {
3129 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4000 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3130 p->w = (W)&pending_w; 4001 p->w = (W)&pending_w;
3131 w_->pending = 0; 4002 w_->pending = 0;
3132 return p->events; 4003 return p->events;
… …
3159 w->active = 0; 4030 w->active = 0;
3160} 4031}
3161 4032
3162/*****************************************************************************/ 4033/*****************************************************************************/
3163 4034
3164void noinline 4035ecb_noinline
4036void
3165ev_io_start (EV_P_ ev_io *w) 4037ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
3166{ 4038{
3167 int fd = w->fd; 4039 int fd = w->fd;
3168 4040
3169 if (expect_false (ev_is_active (w))) 4041 if (ecb_expect_false (ev_is_active (w)))
3170 return; 4042 return;
3171 4043
3172 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4044 assert (("libev: ev_io_start called with negative fd", fd >= 0));
3173 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 4045 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
3174 4046
4047#if EV_VERIFY >= 2
4048 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4049#endif
3175 EV_FREQUENT_CHECK; 4050 EV_FREQUENT_CHECK;
3176 4051
3177 ev_start (EV_A_ (W)w, 1); 4052 ev_start (EV_A_ (W)w, 1);
3178 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4053 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
3179 wlist_add (&anfds[fd].head, (WL)w); 4054 wlist_add (&anfds[fd].head, (WL)w);
4055
4056 /* common bug, apparently */
4057 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3180 4058
3181 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 4059 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
3182 w->events &= ~EV__IOFDSET; 4060 w->events &= ~EV__IOFDSET;
3183 4061
3184 EV_FREQUENT_CHECK; 4062 EV_FREQUENT_CHECK;
3185} 4063}
3186 4064
3187void noinline 4065ecb_noinline
4066void
3188ev_io_stop (EV_P_ ev_io *w) 4067ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
3189{ 4068{
3190 clear_pending (EV_A_ (W)w); 4069 clear_pending (EV_A_ (W)w);
3191 if (expect_false (!ev_is_active (w))) 4070 if (ecb_expect_false (!ev_is_active (w)))
3192 return; 4071 return;
3193 4072
3194 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4073 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
3195 4074
4075#if EV_VERIFY >= 2
4076 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4077#endif
3196 EV_FREQUENT_CHECK; 4078 EV_FREQUENT_CHECK;
3197 4079
3198 wlist_del (&anfds[w->fd].head, (WL)w); 4080 wlist_del (&anfds[w->fd].head, (WL)w);
3199 ev_stop (EV_A_ (W)w); 4081 ev_stop (EV_A_ (W)w);
3200 4082
3201 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 4083 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3202 4084
3203 EV_FREQUENT_CHECK; 4085 EV_FREQUENT_CHECK;
3204} 4086}
3205 4087
3206void noinline 4088ecb_noinline
4089void
3207ev_timer_start (EV_P_ ev_timer *w) 4090ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
3208{ 4091{
3209 if (expect_false (ev_is_active (w))) 4092 if (ecb_expect_false (ev_is_active (w)))
3210 return; 4093 return;
3211 4094
3212 ev_at (w) += mn_now; 4095 ev_at (w) += mn_now;
3213 4096
3214 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4097 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
3215 4098
3216 EV_FREQUENT_CHECK; 4099 EV_FREQUENT_CHECK;
3217 4100
3218 ++timercnt; 4101 ++timercnt;
3219 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4102 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
3220 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4103 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
3221 ANHE_w (timers [ev_active (w)]) = (WT)w; 4104 ANHE_w (timers [ev_active (w)]) = (WT)w;
3222 ANHE_at_cache (timers [ev_active (w)]); 4105 ANHE_at_cache (timers [ev_active (w)]);
3223 upheap (timers, ev_active (w)); 4106 upheap (timers, ev_active (w));
3224 4107
3225 EV_FREQUENT_CHECK; 4108 EV_FREQUENT_CHECK;
3226 4109
3227 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4110 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
3228} 4111}
3229 4112
3230void noinline 4113ecb_noinline
4114void
3231ev_timer_stop (EV_P_ ev_timer *w) 4115ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
3232{ 4116{
3233 clear_pending (EV_A_ (W)w); 4117 clear_pending (EV_A_ (W)w);
3234 if (expect_false (!ev_is_active (w))) 4118 if (ecb_expect_false (!ev_is_active (w)))
3235 return; 4119 return;
3236 4120
3237 EV_FREQUENT_CHECK; 4121 EV_FREQUENT_CHECK;
3238 4122
3239 { 4123 {
… …
3241 4125
3242 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4126 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
3243 4127
3244 --timercnt; 4128 --timercnt;
3245 4129
3246 if (expect_true (active < timercnt + HEAP0)) 4130 if (ecb_expect_true (active < timercnt + HEAP0))
3247 { 4131 {
3248 timers [active] = timers [timercnt + HEAP0]; 4132 timers [active] = timers [timercnt + HEAP0];
3249 adjustheap (timers, timercnt, active); 4133 adjustheap (timers, timercnt, active);
3250 } 4134 }
3251 } 4135 }
… …
3255 ev_stop (EV_A_ (W)w); 4139 ev_stop (EV_A_ (W)w);
3256 4140
3257 EV_FREQUENT_CHECK; 4141 EV_FREQUENT_CHECK;
3258} 4142}
3259 4143
3260void noinline 4144ecb_noinline
4145void
3261ev_timer_again (EV_P_ ev_timer *w) 4146ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
3262{ 4147{
3263 EV_FREQUENT_CHECK; 4148 EV_FREQUENT_CHECK;
4149
4150 clear_pending (EV_A_ (W)w);
3264 4151
3265 if (ev_is_active (w)) 4152 if (ev_is_active (w))
3266 { 4153 {
3267 if (w->repeat) 4154 if (w->repeat)
3268 { 4155 {
… …
3281 4168
3282 EV_FREQUENT_CHECK; 4169 EV_FREQUENT_CHECK;
3283} 4170}
3284 4171
3285ev_tstamp 4172ev_tstamp
3286ev_timer_remaining (EV_P_ ev_timer *w) 4173ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
3287{ 4174{
3288 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4175 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3289} 4176}
3290 4177
3291#if EV_PERIODIC_ENABLE 4178#if EV_PERIODIC_ENABLE
3292void noinline 4179ecb_noinline
4180void
3293ev_periodic_start (EV_P_ ev_periodic *w) 4181ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
3294{ 4182{
3295 if (expect_false (ev_is_active (w))) 4183 if (ecb_expect_false (ev_is_active (w)))
3296 return; 4184 return;
3297 4185
3298 if (w->reschedule_cb) 4186 if (w->reschedule_cb)
3299 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4187 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
3300 else if (w->interval) 4188 else if (w->interval)
… …
3307 4195
3308 EV_FREQUENT_CHECK; 4196 EV_FREQUENT_CHECK;
3309 4197
3310 ++periodiccnt; 4198 ++periodiccnt;
3311 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4199 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
3312 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4200 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
3313 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4201 ANHE_w (periodics [ev_active (w)]) = (WT)w;
3314 ANHE_at_cache (periodics [ev_active (w)]); 4202 ANHE_at_cache (periodics [ev_active (w)]);
3315 upheap (periodics, ev_active (w)); 4203 upheap (periodics, ev_active (w));
3316 4204
3317 EV_FREQUENT_CHECK; 4205 EV_FREQUENT_CHECK;
3318 4206
3319 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4207 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
3320} 4208}
3321 4209
3322void noinline 4210ecb_noinline
4211void
3323ev_periodic_stop (EV_P_ ev_periodic *w) 4212ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
3324{ 4213{
3325 clear_pending (EV_A_ (W)w); 4214 clear_pending (EV_A_ (W)w);
3326 if (expect_false (!ev_is_active (w))) 4215 if (ecb_expect_false (!ev_is_active (w)))
3327 return; 4216 return;
3328 4217
3329 EV_FREQUENT_CHECK; 4218 EV_FREQUENT_CHECK;
3330 4219
3331 { 4220 {
… …
3333 4222
3334 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4223 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
3335 4224
3336 --periodiccnt; 4225 --periodiccnt;
3337 4226
3338 if (expect_true (active < periodiccnt + HEAP0)) 4227 if (ecb_expect_true (active < periodiccnt + HEAP0))
3339 { 4228 {
3340 periodics [active] = periodics [periodiccnt + HEAP0]; 4229 periodics [active] = periodics [periodiccnt + HEAP0];
3341 adjustheap (periodics, periodiccnt, active); 4230 adjustheap (periodics, periodiccnt, active);
3342 } 4231 }
3343 } 4232 }
… …
3345 ev_stop (EV_A_ (W)w); 4234 ev_stop (EV_A_ (W)w);
3346 4235
3347 EV_FREQUENT_CHECK; 4236 EV_FREQUENT_CHECK;
3348} 4237}
3349 4238
3350void noinline 4239ecb_noinline
4240void
3351ev_periodic_again (EV_P_ ev_periodic *w) 4241ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
3352{ 4242{
3353 /* TODO: use adjustheap and recalculation */ 4243 /* TODO: use adjustheap and recalculation */
3354 ev_periodic_stop (EV_A_ w); 4244 ev_periodic_stop (EV_A_ w);
3355 ev_periodic_start (EV_A_ w); 4245 ev_periodic_start (EV_A_ w);
3356} 4246}
… …
3360# define SA_RESTART 0 4250# define SA_RESTART 0
3361#endif 4251#endif
3362 4252
3363#if EV_SIGNAL_ENABLE 4253#if EV_SIGNAL_ENABLE
3364 4254
3365void noinline 4255ecb_noinline
4256void
3366ev_signal_start (EV_P_ ev_signal *w) 4257ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
3367{ 4258{
3368 if (expect_false (ev_is_active (w))) 4259 if (ecb_expect_false (ev_is_active (w)))
3369 return; 4260 return;
3370 4261
3371 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4262 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
3372 4263
3373#if EV_MULTIPLICITY 4264#if EV_MULTIPLICITY
3374 assert (("libev: a signal must not be attached to two different loops", 4265 assert (("libev: a signal must not be attached to two different loops",
3375 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4266 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3376 4267
3377 signals [w->signum - 1].loop = EV_A; 4268 signals [w->signum - 1].loop = EV_A;
4269 ECB_MEMORY_FENCE_RELEASE;
3378#endif 4270#endif
3379 4271
3380 EV_FREQUENT_CHECK; 4272 EV_FREQUENT_CHECK;
3381 4273
3382#if EV_USE_SIGNALFD 4274#if EV_USE_SIGNALFD
… …
3441 } 4333 }
3442 4334
3443 EV_FREQUENT_CHECK; 4335 EV_FREQUENT_CHECK;
3444} 4336}
3445 4337
3446void noinline 4338ecb_noinline
4339void
3447ev_signal_stop (EV_P_ ev_signal *w) 4340ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
3448{ 4341{
3449 clear_pending (EV_A_ (W)w); 4342 clear_pending (EV_A_ (W)w);
3450 if (expect_false (!ev_is_active (w))) 4343 if (ecb_expect_false (!ev_is_active (w)))
3451 return; 4344 return;
3452 4345
3453 EV_FREQUENT_CHECK; 4346 EV_FREQUENT_CHECK;
3454 4347
3455 wlist_del (&signals [w->signum - 1].head, (WL)w); 4348 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
3483#endif 4376#endif
3484 4377
3485#if EV_CHILD_ENABLE 4378#if EV_CHILD_ENABLE
3486 4379
3487void 4380void
3488ev_child_start (EV_P_ ev_child *w) 4381ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
3489{ 4382{
3490#if EV_MULTIPLICITY 4383#if EV_MULTIPLICITY
3491 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4384 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3492#endif 4385#endif
3493 if (expect_false (ev_is_active (w))) 4386 if (ecb_expect_false (ev_is_active (w)))
3494 return; 4387 return;
3495 4388
3496 EV_FREQUENT_CHECK; 4389 EV_FREQUENT_CHECK;
3497 4390
3498 ev_start (EV_A_ (W)w, 1); 4391 ev_start (EV_A_ (W)w, 1);
… …
3500 4393
3501 EV_FREQUENT_CHECK; 4394 EV_FREQUENT_CHECK;
3502} 4395}
3503 4396
3504void 4397void
3505ev_child_stop (EV_P_ ev_child *w) 4398ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
3506{ 4399{
3507 clear_pending (EV_A_ (W)w); 4400 clear_pending (EV_A_ (W)w);
3508 if (expect_false (!ev_is_active (w))) 4401 if (ecb_expect_false (!ev_is_active (w)))
3509 return; 4402 return;
3510 4403
3511 EV_FREQUENT_CHECK; 4404 EV_FREQUENT_CHECK;
3512 4405
3513 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); 4406 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
… …
3527 4420
3528#define DEF_STAT_INTERVAL 5.0074891 4421#define DEF_STAT_INTERVAL 5.0074891
3529#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4422#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3530#define MIN_STAT_INTERVAL 0.1074891 4423#define MIN_STAT_INTERVAL 0.1074891
3531 4424
3532static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4425ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
3533 4426
3534#if EV_USE_INOTIFY 4427#if EV_USE_INOTIFY
3535 4428
3536/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4429/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3537# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4430# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3538 4431
3539static void noinline 4432ecb_noinline
4433static void
3540infy_add (EV_P_ ev_stat *w) 4434infy_add (EV_P_ ev_stat *w)
3541{ 4435{
3542 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); 4436 w->wd = inotify_add_watch (fs_fd, w->path,
4437 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4438 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4439 | IN_DONT_FOLLOW | IN_MASK_ADD);
3543 4440
3544 if (w->wd >= 0) 4441 if (w->wd >= 0)
3545 { 4442 {
3546 struct statfs sfs; 4443 struct statfs sfs;
3547 4444
… …
3551 4448
3552 if (!fs_2625) 4449 if (!fs_2625)
3553 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4450 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3554 else if (!statfs (w->path, &sfs) 4451 else if (!statfs (w->path, &sfs)
3555 && (sfs.f_type == 0x1373 /* devfs */ 4452 && (sfs.f_type == 0x1373 /* devfs */
4453 || sfs.f_type == 0x4006 /* fat */
4454 || sfs.f_type == 0x4d44 /* msdos */
3556 || sfs.f_type == 0xEF53 /* ext2/3 */ 4455 || sfs.f_type == 0xEF53 /* ext2/3 */
4456 || sfs.f_type == 0x72b6 /* jffs2 */
4457 || sfs.f_type == 0x858458f6 /* ramfs */
4458 || sfs.f_type == 0x5346544e /* ntfs */
3557 || sfs.f_type == 0x3153464a /* jfs */ 4459 || sfs.f_type == 0x3153464a /* jfs */
4460 || sfs.f_type == 0x9123683e /* btrfs */
3558 || sfs.f_type == 0x52654973 /* reiser3 */ 4461 || sfs.f_type == 0x52654973 /* reiser3 */
3559 || sfs.f_type == 0x01021994 /* tempfs */ 4462 || sfs.f_type == 0x01021994 /* tmpfs */
3560 || sfs.f_type == 0x58465342 /* xfs */)) 4463 || sfs.f_type == 0x58465342 /* xfs */))
3561 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4464 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3562 else 4465 else
3563 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4466 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3564 } 4467 }
… …
3599 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4502 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3600 ev_timer_again (EV_A_ &w->timer); 4503 ev_timer_again (EV_A_ &w->timer);
3601 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4504 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3602} 4505}
3603 4506
3604static void noinline 4507ecb_noinline
4508static void
3605infy_del (EV_P_ ev_stat *w) 4509infy_del (EV_P_ ev_stat *w)
3606{ 4510{
3607 int slot; 4511 int slot;
3608 int wd = w->wd; 4512 int wd = w->wd;
3609 4513
… …
3616 4520
3617 /* remove this watcher, if others are watching it, they will rearm */ 4521 /* remove this watcher, if others are watching it, they will rearm */
3618 inotify_rm_watch (fs_fd, wd); 4522 inotify_rm_watch (fs_fd, wd);
3619} 4523}
3620 4524
3621static void noinline 4525ecb_noinline
4526static void
3622infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4527infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3623{ 4528{
3624 if (slot < 0) 4529 if (slot < 0)
3625 /* overflow, need to check for all hash slots */ 4530 /* overflow, need to check for all hash slots */
3626 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4531 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3662 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4567 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3663 ofs += sizeof (struct inotify_event) + ev->len; 4568 ofs += sizeof (struct inotify_event) + ev->len;
3664 } 4569 }
3665} 4570}
3666 4571
3667inline_size void ecb_cold 4572inline_size ecb_cold
4573void
3668ev_check_2625 (EV_P) 4574ev_check_2625 (EV_P)
3669{ 4575{
3670 /* kernels < 2.6.25 are borked 4576 /* kernels < 2.6.25 are borked
3671 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4577 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3672 */ 4578 */
… …
3677} 4583}
3678 4584
3679inline_size int 4585inline_size int
3680infy_newfd (void) 4586infy_newfd (void)
3681{ 4587{
3682#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4588#if defined IN_CLOEXEC && defined IN_NONBLOCK
3683 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4589 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3684 if (fd >= 0) 4590 if (fd >= 0)
3685 return fd; 4591 return fd;
3686#endif 4592#endif
3687 return inotify_init (); 4593 return inotify_init ();
… …
3762#else 4668#else
3763# define EV_LSTAT(p,b) lstat (p, b) 4669# define EV_LSTAT(p,b) lstat (p, b)
3764#endif 4670#endif
3765 4671
3766void 4672void
3767ev_stat_stat (EV_P_ ev_stat *w) 4673ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3768{ 4674{
3769 if (lstat (w->path, &w->attr) < 0) 4675 if (lstat (w->path, &w->attr) < 0)
3770 w->attr.st_nlink = 0; 4676 w->attr.st_nlink = 0;
3771 else if (!w->attr.st_nlink) 4677 else if (!w->attr.st_nlink)
3772 w->attr.st_nlink = 1; 4678 w->attr.st_nlink = 1;
3773} 4679}
3774 4680
3775static void noinline 4681ecb_noinline
4682static void
3776stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4683stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3777{ 4684{
3778 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4685 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3779 4686
3780 ev_statdata prev = w->attr; 4687 ev_statdata prev = w->attr;
… …
3811 ev_feed_event (EV_A_ w, EV_STAT); 4718 ev_feed_event (EV_A_ w, EV_STAT);
3812 } 4719 }
3813} 4720}
3814 4721
3815void 4722void
3816ev_stat_start (EV_P_ ev_stat *w) 4723ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3817{ 4724{
3818 if (expect_false (ev_is_active (w))) 4725 if (ecb_expect_false (ev_is_active (w)))
3819 return; 4726 return;
3820 4727
3821 ev_stat_stat (EV_A_ w); 4728 ev_stat_stat (EV_A_ w);
3822 4729
3823 if (w->interval < MIN_STAT_INTERVAL && w->interval) 4730 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
3842 4749
3843 EV_FREQUENT_CHECK; 4750 EV_FREQUENT_CHECK;
3844} 4751}
3845 4752
3846void 4753void
3847ev_stat_stop (EV_P_ ev_stat *w) 4754ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3848{ 4755{
3849 clear_pending (EV_A_ (W)w); 4756 clear_pending (EV_A_ (W)w);
3850 if (expect_false (!ev_is_active (w))) 4757 if (ecb_expect_false (!ev_is_active (w)))
3851 return; 4758 return;
3852 4759
3853 EV_FREQUENT_CHECK; 4760 EV_FREQUENT_CHECK;
3854 4761
3855#if EV_USE_INOTIFY 4762#if EV_USE_INOTIFY
… …
3868} 4775}
3869#endif 4776#endif
3870 4777
3871#if EV_IDLE_ENABLE 4778#if EV_IDLE_ENABLE
3872void 4779void
3873ev_idle_start (EV_P_ ev_idle *w) 4780ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3874{ 4781{
3875 if (expect_false (ev_is_active (w))) 4782 if (ecb_expect_false (ev_is_active (w)))
3876 return; 4783 return;
3877 4784
3878 pri_adjust (EV_A_ (W)w); 4785 pri_adjust (EV_A_ (W)w);
3879 4786
3880 EV_FREQUENT_CHECK; 4787 EV_FREQUENT_CHECK;
… …
3883 int active = ++idlecnt [ABSPRI (w)]; 4790 int active = ++idlecnt [ABSPRI (w)];
3884 4791
3885 ++idleall; 4792 ++idleall;
3886 ev_start (EV_A_ (W)w, active); 4793 ev_start (EV_A_ (W)w, active);
3887 4794
3888 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4795 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
3889 idles [ABSPRI (w)][active - 1] = w; 4796 idles [ABSPRI (w)][active - 1] = w;
3890 } 4797 }
3891 4798
3892 EV_FREQUENT_CHECK; 4799 EV_FREQUENT_CHECK;
3893} 4800}
3894 4801
3895void 4802void
3896ev_idle_stop (EV_P_ ev_idle *w) 4803ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3897{ 4804{
3898 clear_pending (EV_A_ (W)w); 4805 clear_pending (EV_A_ (W)w);
3899 if (expect_false (!ev_is_active (w))) 4806 if (ecb_expect_false (!ev_is_active (w)))
3900 return; 4807 return;
3901 4808
3902 EV_FREQUENT_CHECK; 4809 EV_FREQUENT_CHECK;
3903 4810
3904 { 4811 {
… …
3915} 4822}
3916#endif 4823#endif
3917 4824
3918#if EV_PREPARE_ENABLE 4825#if EV_PREPARE_ENABLE
3919void 4826void
3920ev_prepare_start (EV_P_ ev_prepare *w) 4827ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3921{ 4828{
3922 if (expect_false (ev_is_active (w))) 4829 if (ecb_expect_false (ev_is_active (w)))
3923 return; 4830 return;
3924 4831
3925 EV_FREQUENT_CHECK; 4832 EV_FREQUENT_CHECK;
3926 4833
3927 ev_start (EV_A_ (W)w, ++preparecnt); 4834 ev_start (EV_A_ (W)w, ++preparecnt);
3928 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4835 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3929 prepares [preparecnt - 1] = w; 4836 prepares [preparecnt - 1] = w;
3930 4837
3931 EV_FREQUENT_CHECK; 4838 EV_FREQUENT_CHECK;
3932} 4839}
3933 4840
3934void 4841void
3935ev_prepare_stop (EV_P_ ev_prepare *w) 4842ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3936{ 4843{
3937 clear_pending (EV_A_ (W)w); 4844 clear_pending (EV_A_ (W)w);
3938 if (expect_false (!ev_is_active (w))) 4845 if (ecb_expect_false (!ev_is_active (w)))
3939 return; 4846 return;
3940 4847
3941 EV_FREQUENT_CHECK; 4848 EV_FREQUENT_CHECK;
3942 4849
3943 { 4850 {
… …
3953} 4860}
3954#endif 4861#endif
3955 4862
3956#if EV_CHECK_ENABLE 4863#if EV_CHECK_ENABLE
3957void 4864void
3958ev_check_start (EV_P_ ev_check *w) 4865ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3959{ 4866{
3960 if (expect_false (ev_is_active (w))) 4867 if (ecb_expect_false (ev_is_active (w)))
3961 return; 4868 return;
3962 4869
3963 EV_FREQUENT_CHECK; 4870 EV_FREQUENT_CHECK;
3964 4871
3965 ev_start (EV_A_ (W)w, ++checkcnt); 4872 ev_start (EV_A_ (W)w, ++checkcnt);
3966 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4873 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
3967 checks [checkcnt - 1] = w; 4874 checks [checkcnt - 1] = w;
3968 4875
3969 EV_FREQUENT_CHECK; 4876 EV_FREQUENT_CHECK;
3970} 4877}
3971 4878
3972void 4879void
3973ev_check_stop (EV_P_ ev_check *w) 4880ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
3974{ 4881{
3975 clear_pending (EV_A_ (W)w); 4882 clear_pending (EV_A_ (W)w);
3976 if (expect_false (!ev_is_active (w))) 4883 if (ecb_expect_false (!ev_is_active (w)))
3977 return; 4884 return;
3978 4885
3979 EV_FREQUENT_CHECK; 4886 EV_FREQUENT_CHECK;
3980 4887
3981 { 4888 {
… …
3990 EV_FREQUENT_CHECK; 4897 EV_FREQUENT_CHECK;
3991} 4898}
3992#endif 4899#endif
3993 4900
3994#if EV_EMBED_ENABLE 4901#if EV_EMBED_ENABLE
3995void noinline 4902ecb_noinline
4903void
3996ev_embed_sweep (EV_P_ ev_embed *w) 4904ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3997{ 4905{
3998 ev_run (w->other, EVRUN_NOWAIT); 4906 ev_run (w->other, EVRUN_NOWAIT);
3999} 4907}
4000 4908
4001static void 4909static void
… …
4049 ev_idle_stop (EV_A_ idle); 4957 ev_idle_stop (EV_A_ idle);
4050} 4958}
4051#endif 4959#endif
4052 4960
4053void 4961void
4054ev_embed_start (EV_P_ ev_embed *w) 4962ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
4055{ 4963{
4056 if (expect_false (ev_is_active (w))) 4964 if (ecb_expect_false (ev_is_active (w)))
4057 return; 4965 return;
4058 4966
4059 { 4967 {
4060 EV_P = w->other; 4968 EV_P = w->other;
4061 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4969 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
… …
4080 4988
4081 EV_FREQUENT_CHECK; 4989 EV_FREQUENT_CHECK;
4082} 4990}
4083 4991
4084void 4992void
4085ev_embed_stop (EV_P_ ev_embed *w) 4993ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
4086{ 4994{
4087 clear_pending (EV_A_ (W)w); 4995 clear_pending (EV_A_ (W)w);
4088 if (expect_false (!ev_is_active (w))) 4996 if (ecb_expect_false (!ev_is_active (w)))
4089 return; 4997 return;
4090 4998
4091 EV_FREQUENT_CHECK; 4999 EV_FREQUENT_CHECK;
4092 5000
4093 ev_io_stop (EV_A_ &w->io); 5001 ev_io_stop (EV_A_ &w->io);
… …
4100} 5008}
4101#endif 5009#endif
4102 5010
4103#if EV_FORK_ENABLE 5011#if EV_FORK_ENABLE
4104void 5012void
4105ev_fork_start (EV_P_ ev_fork *w) 5013ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
4106{ 5014{
4107 if (expect_false (ev_is_active (w))) 5015 if (ecb_expect_false (ev_is_active (w)))
4108 return; 5016 return;
4109 5017
4110 EV_FREQUENT_CHECK; 5018 EV_FREQUENT_CHECK;
4111 5019
4112 ev_start (EV_A_ (W)w, ++forkcnt); 5020 ev_start (EV_A_ (W)w, ++forkcnt);
4113 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5021 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
4114 forks [forkcnt - 1] = w; 5022 forks [forkcnt - 1] = w;
4115 5023
4116 EV_FREQUENT_CHECK; 5024 EV_FREQUENT_CHECK;
4117} 5025}
4118 5026
4119void 5027void
4120ev_fork_stop (EV_P_ ev_fork *w) 5028ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
4121{ 5029{
4122 clear_pending (EV_A_ (W)w); 5030 clear_pending (EV_A_ (W)w);
4123 if (expect_false (!ev_is_active (w))) 5031 if (ecb_expect_false (!ev_is_active (w)))
4124 return; 5032 return;
4125 5033
4126 EV_FREQUENT_CHECK; 5034 EV_FREQUENT_CHECK;
4127 5035
4128 { 5036 {
… …
4138} 5046}
4139#endif 5047#endif
4140 5048
4141#if EV_CLEANUP_ENABLE 5049#if EV_CLEANUP_ENABLE
4142void 5050void
4143ev_cleanup_start (EV_P_ ev_cleanup *w) 5051ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4144{ 5052{
4145 if (expect_false (ev_is_active (w))) 5053 if (ecb_expect_false (ev_is_active (w)))
4146 return; 5054 return;
4147 5055
4148 EV_FREQUENT_CHECK; 5056 EV_FREQUENT_CHECK;
4149 5057
4150 ev_start (EV_A_ (W)w, ++cleanupcnt); 5058 ev_start (EV_A_ (W)w, ++cleanupcnt);
4151 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 5059 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
4152 cleanups [cleanupcnt - 1] = w; 5060 cleanups [cleanupcnt - 1] = w;
4153 5061
4154 /* cleanup watchers should never keep a refcount on the loop */ 5062 /* cleanup watchers should never keep a refcount on the loop */
4155 ev_unref (EV_A); 5063 ev_unref (EV_A);
4156 EV_FREQUENT_CHECK; 5064 EV_FREQUENT_CHECK;
4157} 5065}
4158 5066
4159void 5067void
4160ev_cleanup_stop (EV_P_ ev_cleanup *w) 5068ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4161{ 5069{
4162 clear_pending (EV_A_ (W)w); 5070 clear_pending (EV_A_ (W)w);
4163 if (expect_false (!ev_is_active (w))) 5071 if (ecb_expect_false (!ev_is_active (w)))
4164 return; 5072 return;
4165 5073
4166 EV_FREQUENT_CHECK; 5074 EV_FREQUENT_CHECK;
4167 ev_ref (EV_A); 5075 ev_ref (EV_A);
4168 5076
… …
4179} 5087}
4180#endif 5088#endif
4181 5089
4182#if EV_ASYNC_ENABLE 5090#if EV_ASYNC_ENABLE
4183void 5091void
4184ev_async_start (EV_P_ ev_async *w) 5092ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4185{ 5093{
4186 if (expect_false (ev_is_active (w))) 5094 if (ecb_expect_false (ev_is_active (w)))
4187 return; 5095 return;
4188 5096
4189 w->sent = 0; 5097 w->sent = 0;
4190 5098
4191 evpipe_init (EV_A); 5099 evpipe_init (EV_A);
4192 5100
4193 EV_FREQUENT_CHECK; 5101 EV_FREQUENT_CHECK;
4194 5102
4195 ev_start (EV_A_ (W)w, ++asynccnt); 5103 ev_start (EV_A_ (W)w, ++asynccnt);
4196 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5104 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
4197 asyncs [asynccnt - 1] = w; 5105 asyncs [asynccnt - 1] = w;
4198 5106
4199 EV_FREQUENT_CHECK; 5107 EV_FREQUENT_CHECK;
4200} 5108}
4201 5109
4202void 5110void
4203ev_async_stop (EV_P_ ev_async *w) 5111ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4204{ 5112{
4205 clear_pending (EV_A_ (W)w); 5113 clear_pending (EV_A_ (W)w);
4206 if (expect_false (!ev_is_active (w))) 5114 if (ecb_expect_false (!ev_is_active (w)))
4207 return; 5115 return;
4208 5116
4209 EV_FREQUENT_CHECK; 5117 EV_FREQUENT_CHECK;
4210 5118
4211 { 5119 {
… …
4219 5127
4220 EV_FREQUENT_CHECK; 5128 EV_FREQUENT_CHECK;
4221} 5129}
4222 5130
4223void 5131void
4224ev_async_send (EV_P_ ev_async *w) 5132ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
4225{ 5133{
4226 w->sent = 1; 5134 w->sent = 1;
4227 evpipe_write (EV_A_ &async_pending); 5135 evpipe_write (EV_A_ &async_pending);
4228} 5136}
4229#endif 5137#endif
… …
4266 5174
4267 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5175 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
4268} 5176}
4269 5177
4270void 5178void
4271ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5179ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
4272{ 5180{
4273 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5181 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
4274
4275 if (expect_false (!once))
4276 {
4277 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
4278 return;
4279 }
4280 5182
4281 once->cb = cb; 5183 once->cb = cb;
4282 once->arg = arg; 5184 once->arg = arg;
4283 5185
4284 ev_init (&once->io, once_cb_io); 5186 ev_init (&once->io, once_cb_io);
… …
4297} 5199}
4298 5200
4299/*****************************************************************************/ 5201/*****************************************************************************/
4300 5202
4301#if EV_WALK_ENABLE 5203#if EV_WALK_ENABLE
4302void ecb_cold 5204ecb_cold
5205void
4303ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5206ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
4304{ 5207{
4305 int i, j; 5208 int i, j;
4306 ev_watcher_list *wl, *wn; 5209 ev_watcher_list *wl, *wn;
4307 5210
4308 if (types & (EV_IO | EV_EMBED)) 5211 if (types & (EV_IO | EV_EMBED))

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