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Comparing libev/ev.c (file contents):
Revision 1.398 by root, Sun Sep 25 21:27:35 2011 UTC vs.
Revision 1.501 by root, Mon Jul 1 21:47:42 2019 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007-2019 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
… …
43# include EV_CONFIG_H 43# include EV_CONFIG_H
44# else 44# else
45# include "config.h" 45# include "config.h"
46# endif 46# endif
47 47
48#if HAVE_FLOOR 48# if HAVE_FLOOR
49# ifndef EV_USE_FLOOR 49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1 50# define EV_USE_FLOOR 1
51# endif
51# endif 52# endif
52#endif
53 53
54# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
55# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
56# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
57# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
… …
59# endif 59# endif
60# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
62# endif 62# endif
63# endif 63# endif
64# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
65# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
66# endif 66# endif
67 67
68# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
69# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
113# define EV_USE_EPOLL EV_FEATURE_BACKENDS 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
114# endif 114# endif
115# else 115# else
116# undef EV_USE_EPOLL 116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0 117# define EV_USE_EPOLL 0
118# endif
119
120# if HAVE_LINUX_AIO_ABI_H
121# ifndef EV_USE_LINUXAIO
122# define EV_USE_LINUXAIO EV_FEATURE_BACKENDS
123# endif
124# else
125# undef EV_USE_LINUXAIO
126# define EV_USE_LINUXAIO 0
118# endif 127# endif
119 128
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H 129# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
121# ifndef EV_USE_KQUEUE 130# ifndef EV_USE_KQUEUE
122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS 131# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
… …
162# define EV_USE_EVENTFD 0 171# define EV_USE_EVENTFD 0
163# endif 172# endif
164 173
165#endif 174#endif
166 175
176/* OS X, in its infinite idiocy, actually HARDCODES
177 * a limit of 1024 into their select. Where people have brains,
178 * OS X engineers apparently have a vacuum. Or maybe they were
179 * ordered to have a vacuum, or they do anything for money.
180 * This might help. Or not.
181 * Note that this must be defined early, as other include files
182 * will rely on this define as well.
183 */
184#define _DARWIN_UNLIMITED_SELECT 1
185
167#include <stdlib.h> 186#include <stdlib.h>
168#include <string.h> 187#include <string.h>
169#include <fcntl.h> 188#include <fcntl.h>
170#include <stddef.h> 189#include <stddef.h>
171 190
… …
183# include EV_H 202# include EV_H
184#else 203#else
185# include "ev.h" 204# include "ev.h"
186#endif 205#endif
187 206
188EV_CPP(extern "C" {) 207#if EV_NO_THREADS
208# undef EV_NO_SMP
209# define EV_NO_SMP 1
210# undef ECB_NO_THREADS
211# define ECB_NO_THREADS 1
212#endif
213#if EV_NO_SMP
214# undef EV_NO_SMP
215# define ECB_NO_SMP 1
216#endif
189 217
190#ifndef _WIN32 218#ifndef _WIN32
191# include <sys/time.h> 219# include <sys/time.h>
192# include <sys/wait.h> 220# include <sys/wait.h>
193# include <unistd.h> 221# include <unistd.h>
194#else 222#else
195# include <io.h> 223# include <io.h>
196# define WIN32_LEAN_AND_MEAN 224# define WIN32_LEAN_AND_MEAN
225# include <winsock2.h>
197# include <windows.h> 226# include <windows.h>
198# ifndef EV_SELECT_IS_WINSOCKET 227# ifndef EV_SELECT_IS_WINSOCKET
199# define EV_SELECT_IS_WINSOCKET 1 228# define EV_SELECT_IS_WINSOCKET 1
200# endif 229# endif
201# undef EV_AVOID_STDIO 230# undef EV_AVOID_STDIO
202#endif 231#endif
203 232
204/* OS X, in its infinite idiocy, actually HARDCODES
205 * a limit of 1024 into their select. Where people have brains,
206 * OS X engineers apparently have a vacuum. Or maybe they were
207 * ordered to have a vacuum, or they do anything for money.
208 * This might help. Or not.
209 */
210#define _DARWIN_UNLIMITED_SELECT 1
211
212/* this block tries to deduce configuration from header-defined symbols and defaults */ 233/* this block tries to deduce configuration from header-defined symbols and defaults */
213 234
214/* try to deduce the maximum number of signals on this platform */ 235/* try to deduce the maximum number of signals on this platform */
215#if defined (EV_NSIG) 236#if defined EV_NSIG
216/* use what's provided */ 237/* use what's provided */
217#elif defined (NSIG) 238#elif defined NSIG
218# define EV_NSIG (NSIG) 239# define EV_NSIG (NSIG)
219#elif defined(_NSIG) 240#elif defined _NSIG
220# define EV_NSIG (_NSIG) 241# define EV_NSIG (_NSIG)
221#elif defined (SIGMAX) 242#elif defined SIGMAX
222# define EV_NSIG (SIGMAX+1) 243# define EV_NSIG (SIGMAX+1)
223#elif defined (SIG_MAX) 244#elif defined SIG_MAX
224# define EV_NSIG (SIG_MAX+1) 245# define EV_NSIG (SIG_MAX+1)
225#elif defined (_SIG_MAX) 246#elif defined _SIG_MAX
226# define EV_NSIG (_SIG_MAX+1) 247# define EV_NSIG (_SIG_MAX+1)
227#elif defined (MAXSIG) 248#elif defined MAXSIG
228# define EV_NSIG (MAXSIG+1) 249# define EV_NSIG (MAXSIG+1)
229#elif defined (MAX_SIG) 250#elif defined MAX_SIG
230# define EV_NSIG (MAX_SIG+1) 251# define EV_NSIG (MAX_SIG+1)
231#elif defined (SIGARRAYSIZE) 252#elif defined SIGARRAYSIZE
232# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 253# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
233#elif defined (_sys_nsig) 254#elif defined _sys_nsig
234# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 255# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
235#else 256#else
236# error "unable to find value for NSIG, please report" 257# define EV_NSIG (8 * sizeof (sigset_t) + 1)
237/* to make it compile regardless, just remove the above line, */
238/* but consider reporting it, too! :) */
239# define EV_NSIG 65
240#endif 258#endif
241 259
242#ifndef EV_USE_FLOOR 260#ifndef EV_USE_FLOOR
243# define EV_USE_FLOOR 0 261# define EV_USE_FLOOR 0
244#endif 262#endif
245 263
246#ifndef EV_USE_CLOCK_SYSCALL 264#ifndef EV_USE_CLOCK_SYSCALL
247# if __linux && __GLIBC__ >= 2 265# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
248# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 266# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
249# else 267# else
250# define EV_USE_CLOCK_SYSCALL 0 268# define EV_USE_CLOCK_SYSCALL 0
251# endif 269# endif
252#endif 270#endif
253 271
272#if !(_POSIX_TIMERS > 0)
273# ifndef EV_USE_MONOTONIC
274# define EV_USE_MONOTONIC 0
275# endif
276# ifndef EV_USE_REALTIME
277# define EV_USE_REALTIME 0
278# endif
279#endif
280
254#ifndef EV_USE_MONOTONIC 281#ifndef EV_USE_MONOTONIC
255# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 282# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
256# define EV_USE_MONOTONIC EV_FEATURE_OS 283# define EV_USE_MONOTONIC EV_FEATURE_OS
257# else 284# else
258# define EV_USE_MONOTONIC 0 285# define EV_USE_MONOTONIC 0
259# endif 286# endif
260#endif 287#endif
… …
297 324
298#ifndef EV_USE_PORT 325#ifndef EV_USE_PORT
299# define EV_USE_PORT 0 326# define EV_USE_PORT 0
300#endif 327#endif
301 328
329#ifndef EV_USE_LINUXAIO
330# if __linux /* libev currently assumes linux/aio_abi.h is always available on linux */
331# define EV_USE_LINUXAIO 1
332# else
333# define EV_USE_LINUXAIO 0
334# endif
335#endif
336
337#ifndef EV_USE_IOURING
338# if __linux
339# define EV_USE_IOURING 0
340# else
341# define EV_USE_IOURING 0
342# endif
343#endif
344
302#ifndef EV_USE_INOTIFY 345#ifndef EV_USE_INOTIFY
303# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 346# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
304# define EV_USE_INOTIFY EV_FEATURE_OS 347# define EV_USE_INOTIFY EV_FEATURE_OS
305# else 348# else
306# define EV_USE_INOTIFY 0 349# define EV_USE_INOTIFY 0
… …
347 390
348#ifndef EV_HEAP_CACHE_AT 391#ifndef EV_HEAP_CACHE_AT
349# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 392# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
350#endif 393#endif
351 394
395#ifdef __ANDROID__
396/* supposedly, android doesn't typedef fd_mask */
397# undef EV_USE_SELECT
398# define EV_USE_SELECT 0
399/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
400# undef EV_USE_CLOCK_SYSCALL
401# define EV_USE_CLOCK_SYSCALL 0
402#endif
403
404/* aix's poll.h seems to cause lots of trouble */
405#ifdef _AIX
406/* AIX has a completely broken poll.h header */
407# undef EV_USE_POLL
408# define EV_USE_POLL 0
409#endif
410
352/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 411/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
353/* which makes programs even slower. might work on other unices, too. */ 412/* which makes programs even slower. might work on other unices, too. */
354#if EV_USE_CLOCK_SYSCALL 413#if EV_USE_CLOCK_SYSCALL
355# include <syscall.h> 414# include <sys/syscall.h>
356# ifdef SYS_clock_gettime 415# ifdef SYS_clock_gettime
357# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 416# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
358# undef EV_USE_MONOTONIC 417# undef EV_USE_MONOTONIC
359# define EV_USE_MONOTONIC 1 418# define EV_USE_MONOTONIC 1
419# define EV_NEED_SYSCALL 1
360# else 420# else
361# undef EV_USE_CLOCK_SYSCALL 421# undef EV_USE_CLOCK_SYSCALL
362# define EV_USE_CLOCK_SYSCALL 0 422# define EV_USE_CLOCK_SYSCALL 0
363# endif 423# endif
364#endif 424#endif
365 425
366/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 426/* this block fixes any misconfiguration where we know we run into trouble otherwise */
367 427
368#ifdef _AIX
369/* AIX has a completely broken poll.h header */
370# undef EV_USE_POLL
371# define EV_USE_POLL 0
372#endif
373
374#ifndef CLOCK_MONOTONIC 428#ifndef CLOCK_MONOTONIC
375# undef EV_USE_MONOTONIC 429# undef EV_USE_MONOTONIC
376# define EV_USE_MONOTONIC 0 430# define EV_USE_MONOTONIC 0
377#endif 431#endif
378 432
… …
386# define EV_USE_INOTIFY 0 440# define EV_USE_INOTIFY 0
387#endif 441#endif
388 442
389#if !EV_USE_NANOSLEEP 443#if !EV_USE_NANOSLEEP
390/* hp-ux has it in sys/time.h, which we unconditionally include above */ 444/* hp-ux has it in sys/time.h, which we unconditionally include above */
391# if !defined(_WIN32) && !defined(__hpux) 445# if !defined _WIN32 && !defined __hpux
392# include <sys/select.h> 446# include <sys/select.h>
447# endif
448#endif
449
450#if EV_USE_LINUXAIO
451# include <sys/syscall.h>
452# if !SYS_io_getevents || !EV_USE_EPOLL /* ev_linxaio uses ev_poll.c:ev_epoll_create */
453# undef EV_USE_LINUXAIO
454# define EV_USE_LINUXAIO 0
455# else
456# define EV_NEED_SYSCALL 1
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
468# define EV_NEED_SYSCALL 1
469# else
470# undef EV_USE_IOURING
471# define EV_USE_IOURING 0
393# endif 472# endif
394#endif 473#endif
395 474
396#if EV_USE_INOTIFY 475#if EV_USE_INOTIFY
397# include <sys/statfs.h> 476# include <sys/statfs.h>
… …
399/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 478/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
400# ifndef IN_DONT_FOLLOW 479# ifndef IN_DONT_FOLLOW
401# undef EV_USE_INOTIFY 480# undef EV_USE_INOTIFY
402# define EV_USE_INOTIFY 0 481# define EV_USE_INOTIFY 0
403# endif 482# endif
404#endif
405
406#if EV_SELECT_IS_WINSOCKET
407# include <winsock.h>
408#endif 483#endif
409 484
410#if EV_USE_EVENTFD 485#if EV_USE_EVENTFD
411/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 486/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
412# include <stdint.h> 487# include <stdint.h>
… …
443 uint32_t ssi_signo; 518 uint32_t ssi_signo;
444 char pad[128 - sizeof (uint32_t)]; 519 char pad[128 - sizeof (uint32_t)];
445}; 520};
446#endif 521#endif
447 522
448/**/ 523/*****************************************************************************/
524
525#if EV_NEED_SYSCALL
526
527#include <sys/syscall.h>
528
529/*
530 * define some syscall wrappers for common architectures
531 * this is mostly for nice looks during debugging, not performance.
532 * our syscalls return < 0, not == -1, on error. which is good
533 * enough for linux aio.
534 * TODO: arm is also common nowadays, maybe even mips and x86
535 * TODO: after implementing this, it suddenly looks like overkill, but its hard to remove...
536 */
537#if __GNUC__ && __linux && ECB_AMD64 && !defined __OPTIMIZE_SIZE__
538 /* the costly errno access probably kills this for size optimisation */
539
540 #define ev_syscall(nr,narg,arg1,arg2,arg3,arg4,arg5) \
541 ({ \
542 long res; \
543 register unsigned long r5 __asm__ ("r8" ); \
544 register unsigned long r4 __asm__ ("r10"); \
545 register unsigned long r3 __asm__ ("rdx"); \
546 register unsigned long r2 __asm__ ("rsi"); \
547 register unsigned long r1 __asm__ ("rdi"); \
548 if (narg >= 5) r5 = (unsigned long)(arg5); \
549 if (narg >= 4) r4 = (unsigned long)(arg4); \
550 if (narg >= 3) r3 = (unsigned long)(arg3); \
551 if (narg >= 2) r2 = (unsigned long)(arg2); \
552 if (narg >= 1) r1 = (unsigned long)(arg1); \
553 __asm__ __volatile__ ( \
554 "syscall\n\t" \
555 : "=a" (res) \
556 : "0" (nr), "r" (r1), "r" (r2), "r" (r3), "r" (r4), "r" (r5) \
557 : "cc", "r11", "cx", "memory"); \
558 errno = -res; \
559 res; \
560 })
561
562#endif
563
564#ifdef ev_syscall
565 #define ev_syscall0(nr) ev_syscall (nr, 0, 0, 0, 0, 0, 0
566 #define ev_syscall1(nr,arg1) ev_syscall (nr, 1, arg1, 0, 0, 0, 0)
567 #define ev_syscall2(nr,arg1,arg2) ev_syscall (nr, 2, arg1, arg2, 0, 0, 0)
568 #define ev_syscall3(nr,arg1,arg2,arg3) ev_syscall (nr, 3, arg1, arg2, arg3, 0, 0)
569 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) ev_syscall (nr, 3, arg1, arg2, arg3, arg4, 0)
570 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) ev_syscall (nr, 5, arg1, arg2, arg3, arg4, arg5)
571#else
572 #define ev_syscall0(nr) syscall (nr)
573 #define ev_syscall1(nr,arg1) syscall (nr, arg1)
574 #define ev_syscall2(nr,arg1,arg2) syscall (nr, arg1, arg2)
575 #define ev_syscall3(nr,arg1,arg2,arg3) syscall (nr, arg1, arg2, arg3)
576 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) syscall (nr, arg1, arg2, arg3, arg4)
577 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) syscall (nr, arg1, arg2, arg3, arg4, arg5)
578#endif
579
580#endif
581
582/*****************************************************************************/
449 583
450#if EV_VERIFY >= 3 584#if EV_VERIFY >= 3
451# define EV_FREQUENT_CHECK ev_verify (EV_A) 585# define EV_FREQUENT_CHECK ev_verify (EV_A)
452#else 586#else
453# define EV_FREQUENT_CHECK do { } while (0) 587# define EV_FREQUENT_CHECK do { } while (0)
… …
469/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ 603/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
470/* ECB.H BEGIN */ 604/* ECB.H BEGIN */
471/* 605/*
472 * libecb - http://software.schmorp.de/pkg/libecb 606 * libecb - http://software.schmorp.de/pkg/libecb
473 * 607 *
474 * Copyright (©) 2009-2011 Marc Alexander Lehmann <libecb@schmorp.de> 608 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
475 * Copyright (©) 2011 Emanuele Giaquinta 609 * Copyright (©) 2011 Emanuele Giaquinta
476 * All rights reserved. 610 * All rights reserved.
477 * 611 *
478 * Redistribution and use in source and binary forms, with or without modifica- 612 * Redistribution and use in source and binary forms, with or without modifica-
479 * tion, are permitted provided that the following conditions are met: 613 * tion, are permitted provided that the following conditions are met:
… …
493 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 627 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
494 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 628 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
495 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- 629 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
496 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 630 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
497 * OF THE POSSIBILITY OF SUCH DAMAGE. 631 * OF THE POSSIBILITY OF SUCH DAMAGE.
632 *
633 * Alternatively, the contents of this file may be used under the terms of
634 * the GNU General Public License ("GPL") version 2 or any later version,
635 * in which case the provisions of the GPL are applicable instead of
636 * the above. If you wish to allow the use of your version of this file
637 * only under the terms of the GPL and not to allow others to use your
638 * version of this file under the BSD license, indicate your decision
639 * by deleting the provisions above and replace them with the notice
640 * and other provisions required by the GPL. If you do not delete the
641 * provisions above, a recipient may use your version of this file under
642 * either the BSD or the GPL.
498 */ 643 */
499 644
500#ifndef ECB_H 645#ifndef ECB_H
501#define ECB_H 646#define ECB_H
647
648/* 16 bits major, 16 bits minor */
649#define ECB_VERSION 0x00010006
502 650
503#ifdef _WIN32 651#ifdef _WIN32
504 typedef signed char int8_t; 652 typedef signed char int8_t;
505 typedef unsigned char uint8_t; 653 typedef unsigned char uint8_t;
506 typedef signed short int16_t; 654 typedef signed short int16_t;
… …
512 typedef unsigned long long uint64_t; 660 typedef unsigned long long uint64_t;
513 #else /* _MSC_VER || __BORLANDC__ */ 661 #else /* _MSC_VER || __BORLANDC__ */
514 typedef signed __int64 int64_t; 662 typedef signed __int64 int64_t;
515 typedef unsigned __int64 uint64_t; 663 typedef unsigned __int64 uint64_t;
516 #endif 664 #endif
665 #ifdef _WIN64
666 #define ECB_PTRSIZE 8
667 typedef uint64_t uintptr_t;
668 typedef int64_t intptr_t;
669 #else
670 #define ECB_PTRSIZE 4
671 typedef uint32_t uintptr_t;
672 typedef int32_t intptr_t;
673 #endif
517#else 674#else
518 #include <inttypes.h> 675 #include <inttypes.h>
676 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
677 #define ECB_PTRSIZE 8
678 #else
679 #define ECB_PTRSIZE 4
680 #endif
681#endif
682
683#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
684#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
685
686/* work around x32 idiocy by defining proper macros */
687#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
688 #if _ILP32
689 #define ECB_AMD64_X32 1
690 #else
691 #define ECB_AMD64 1
692 #endif
519#endif 693#endif
520 694
521/* many compilers define _GNUC_ to some versions but then only implement 695/* many compilers define _GNUC_ to some versions but then only implement
522 * what their idiot authors think are the "more important" extensions, 696 * what their idiot authors think are the "more important" extensions,
523 * causing enormous grief in return for some better fake benchmark numbers. 697 * causing enormous grief in return for some better fake benchmark numbers.
524 * or so. 698 * or so.
525 * we try to detect these and simply assume they are not gcc - if they have 699 * we try to detect these and simply assume they are not gcc - if they have
526 * an issue with that they should have done it right in the first place. 700 * an issue with that they should have done it right in the first place.
527 */ 701 */
528#ifndef ECB_GCC_VERSION
529 #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__) 702#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
530 #define ECB_GCC_VERSION(major,minor) 0 703 #define ECB_GCC_VERSION(major,minor) 0
531 #else 704#else
532 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) 705 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
533 #endif 706#endif
707
708#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
709
710#if __clang__ && defined __has_builtin
711 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
712#else
713 #define ECB_CLANG_BUILTIN(x) 0
714#endif
715
716#if __clang__ && defined __has_extension
717 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
718#else
719 #define ECB_CLANG_EXTENSION(x) 0
720#endif
721
722#define ECB_CPP (__cplusplus+0)
723#define ECB_CPP11 (__cplusplus >= 201103L)
724#define ECB_CPP14 (__cplusplus >= 201402L)
725#define ECB_CPP17 (__cplusplus >= 201703L)
726
727#if ECB_CPP
728 #define ECB_C 0
729 #define ECB_STDC_VERSION 0
730#else
731 #define ECB_C 1
732 #define ECB_STDC_VERSION __STDC_VERSION__
733#endif
734
735#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
736#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
737#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
738
739#if ECB_CPP
740 #define ECB_EXTERN_C extern "C"
741 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
742 #define ECB_EXTERN_C_END }
743#else
744 #define ECB_EXTERN_C extern
745 #define ECB_EXTERN_C_BEG
746 #define ECB_EXTERN_C_END
534#endif 747#endif
535 748
536/*****************************************************************************/ 749/*****************************************************************************/
537 750
538/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ 751/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
539/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */ 752/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
540 753
541#if ECB_NO_THREADS || ECB_NO_SMP 754#if ECB_NO_THREADS
755 #define ECB_NO_SMP 1
756#endif
757
758#if ECB_NO_SMP
542 #define ECB_MEMORY_FENCE do { } while (0) 759 #define ECB_MEMORY_FENCE do { } while (0)
543#endif 760#endif
544 761
762/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
763#if __xlC__ && ECB_CPP
764 #include <builtins.h>
765#endif
766
767#if 1400 <= _MSC_VER
768 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
769#endif
770
545#ifndef ECB_MEMORY_FENCE 771#ifndef ECB_MEMORY_FENCE
546 #if ECB_GCC_VERSION(2,5) || defined(__INTEL_COMPILER) || defined(__clang__) 772 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
773 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
547 #if __i386__ 774 #if __i386 || __i386__
548 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") 775 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
549 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */ 776 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
550 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */ 777 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
551 #elif __amd64 778 #elif ECB_GCC_AMD64
552 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 779 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
553 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory") 780 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
554 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */ 781 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
555 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 782 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
556 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 783 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
784 #elif defined __ARM_ARCH_2__ \
785 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
786 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
787 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
788 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
789 || defined __ARM_ARCH_5TEJ__
790 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
557 #elif defined(__ARM_ARCH_6__ ) || defined(__ARM_ARCH_6J__ ) \ 791 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
558 || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6ZK__) 792 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
793 || defined __ARM_ARCH_6T2__
559 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") 794 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
560 #elif defined(__ARM_ARCH_7__ ) || defined(__ARM_ARCH_7A__ ) \ 795 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
561 || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7R__ ) 796 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
562 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") 797 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
798 #elif __aarch64__
799 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
800 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
801 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
802 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
803 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
804 #elif defined __s390__ || defined __s390x__
805 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
806 #elif defined __mips__
807 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
808 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
809 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
810 #elif defined __alpha__
811 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
812 #elif defined __hppa__
813 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
814 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
815 #elif defined __ia64__
816 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
817 #elif defined __m68k__
818 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
819 #elif defined __m88k__
820 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
821 #elif defined __sh__
822 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
563 #endif 823 #endif
564 #endif 824 #endif
565#endif 825#endif
566 826
567#ifndef ECB_MEMORY_FENCE 827#ifndef ECB_MEMORY_FENCE
828 #if ECB_GCC_VERSION(4,7)
829 /* see comment below (stdatomic.h) about the C11 memory model. */
830 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
831 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
832 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
833 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
834
835 #elif ECB_CLANG_EXTENSION(c_atomic)
836 /* see comment below (stdatomic.h) about the C11 memory model. */
837 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
838 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
839 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
840 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
841
568 #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER) || defined(__clang__) 842 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
569 #define ECB_MEMORY_FENCE __sync_synchronize () 843 #define ECB_MEMORY_FENCE __sync_synchronize ()
570 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */ 844 #elif _MSC_VER >= 1500 /* VC++ 2008 */
571 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */ 845 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
846 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
847 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
848 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
849 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
572 #elif _MSC_VER >= 1400 /* VC++ 2005 */ 850 #elif _MSC_VER >= 1400 /* VC++ 2005 */
573 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) 851 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
574 #define ECB_MEMORY_FENCE _ReadWriteBarrier () 852 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
575 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ 853 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
576 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () 854 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
577 #elif defined(_WIN32) 855 #elif defined _WIN32
578 #include <WinNT.h> 856 #include <WinNT.h>
579 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ 857 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
858 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
859 #include <mbarrier.h>
860 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
861 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
862 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
863 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
864 #elif __xlC__
865 #define ECB_MEMORY_FENCE __sync ()
866 #endif
867#endif
868
869#ifndef ECB_MEMORY_FENCE
870 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
871 /* we assume that these memory fences work on all variables/all memory accesses, */
872 /* not just C11 atomics and atomic accesses */
873 #include <stdatomic.h>
874 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
875 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
876 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
580 #endif 877 #endif
581#endif 878#endif
582 879
583#ifndef ECB_MEMORY_FENCE 880#ifndef ECB_MEMORY_FENCE
584 #if !ECB_AVOID_PTHREADS 881 #if !ECB_AVOID_PTHREADS
… …
596 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER; 893 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
597 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0) 894 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
598 #endif 895 #endif
599#endif 896#endif
600 897
601#if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE) 898#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
602 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 899 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
603#endif 900#endif
604 901
605#if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE) 902#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
606 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 903 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
607#endif 904#endif
608 905
906#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
907 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
908#endif
909
609/*****************************************************************************/ 910/*****************************************************************************/
610 911
611#define ECB_C99 (__STDC_VERSION__ >= 199901L) 912#if ECB_CPP
612
613#if __cplusplus
614 #define ecb_inline static inline 913 #define ecb_inline static inline
615#elif ECB_GCC_VERSION(2,5) 914#elif ECB_GCC_VERSION(2,5)
616 #define ecb_inline static __inline__ 915 #define ecb_inline static __inline__
617#elif ECB_C99 916#elif ECB_C99
618 #define ecb_inline static inline 917 #define ecb_inline static inline
… …
632 931
633#define ECB_CONCAT_(a, b) a ## b 932#define ECB_CONCAT_(a, b) a ## b
634#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) 933#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
635#define ECB_STRINGIFY_(a) # a 934#define ECB_STRINGIFY_(a) # a
636#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) 935#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
936#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
637 937
638#define ecb_function_ ecb_inline 938#define ecb_function_ ecb_inline
639 939
640#if ECB_GCC_VERSION(3,1) 940#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
641 #define ecb_attribute(attrlist) __attribute__(attrlist) 941 #define ecb_attribute(attrlist) __attribute__ (attrlist)
942#else
943 #define ecb_attribute(attrlist)
944#endif
945
946#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
642 #define ecb_is_constant(expr) __builtin_constant_p (expr) 947 #define ecb_is_constant(expr) __builtin_constant_p (expr)
948#else
949 /* possible C11 impl for integral types
950 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
951 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
952
953 #define ecb_is_constant(expr) 0
954#endif
955
956#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
643 #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) 957 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
958#else
959 #define ecb_expect(expr,value) (expr)
960#endif
961
962#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
644 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) 963 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
645#else 964#else
646 #define ecb_attribute(attrlist)
647 #define ecb_is_constant(expr) 0
648 #define ecb_expect(expr,value) (expr)
649 #define ecb_prefetch(addr,rw,locality) 965 #define ecb_prefetch(addr,rw,locality)
650#endif 966#endif
651 967
652/* no emulation for ecb_decltype */ 968/* no emulation for ecb_decltype */
653#if ECB_GCC_VERSION(4,5) 969#if ECB_CPP11
970 // older implementations might have problems with decltype(x)::type, work around it
971 template<class T> struct ecb_decltype_t { typedef T type; };
654 #define ecb_decltype(x) __decltype(x) 972 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
655#elif ECB_GCC_VERSION(3,0) 973#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
656 #define ecb_decltype(x) __typeof(x) 974 #define ecb_decltype(x) __typeof__ (x)
657#endif 975#endif
658 976
977#if _MSC_VER >= 1300
978 #define ecb_deprecated __declspec (deprecated)
979#else
980 #define ecb_deprecated ecb_attribute ((__deprecated__))
981#endif
982
983#if _MSC_VER >= 1500
984 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
985#elif ECB_GCC_VERSION(4,5)
986 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
987#else
988 #define ecb_deprecated_message(msg) ecb_deprecated
989#endif
990
991#if _MSC_VER >= 1400
992 #define ecb_noinline __declspec (noinline)
993#else
659#define ecb_noinline ecb_attribute ((__noinline__)) 994 #define ecb_noinline ecb_attribute ((__noinline__))
660#define ecb_noreturn ecb_attribute ((__noreturn__)) 995#endif
996
661#define ecb_unused ecb_attribute ((__unused__)) 997#define ecb_unused ecb_attribute ((__unused__))
662#define ecb_const ecb_attribute ((__const__)) 998#define ecb_const ecb_attribute ((__const__))
663#define ecb_pure ecb_attribute ((__pure__)) 999#define ecb_pure ecb_attribute ((__pure__))
1000
1001#if ECB_C11 || __IBMC_NORETURN
1002 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
1003 #define ecb_noreturn _Noreturn
1004#elif ECB_CPP11
1005 #define ecb_noreturn [[noreturn]]
1006#elif _MSC_VER >= 1200
1007 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
1008 #define ecb_noreturn __declspec (noreturn)
1009#else
1010 #define ecb_noreturn ecb_attribute ((__noreturn__))
1011#endif
664 1012
665#if ECB_GCC_VERSION(4,3) 1013#if ECB_GCC_VERSION(4,3)
666 #define ecb_artificial ecb_attribute ((__artificial__)) 1014 #define ecb_artificial ecb_attribute ((__artificial__))
667 #define ecb_hot ecb_attribute ((__hot__)) 1015 #define ecb_hot ecb_attribute ((__hot__))
668 #define ecb_cold ecb_attribute ((__cold__)) 1016 #define ecb_cold ecb_attribute ((__cold__))
… …
680/* for compatibility to the rest of the world */ 1028/* for compatibility to the rest of the world */
681#define ecb_likely(expr) ecb_expect_true (expr) 1029#define ecb_likely(expr) ecb_expect_true (expr)
682#define ecb_unlikely(expr) ecb_expect_false (expr) 1030#define ecb_unlikely(expr) ecb_expect_false (expr)
683 1031
684/* count trailing zero bits and count # of one bits */ 1032/* count trailing zero bits and count # of one bits */
685#if ECB_GCC_VERSION(3,4) 1033#if ECB_GCC_VERSION(3,4) \
1034 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
1035 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
1036 && ECB_CLANG_BUILTIN(__builtin_popcount))
686 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */ 1037 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
687 #define ecb_ld32(x) (__builtin_clz (x) ^ 31) 1038 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
688 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) 1039 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
689 #define ecb_ctz32(x) __builtin_ctz (x) 1040 #define ecb_ctz32(x) __builtin_ctz (x)
690 #define ecb_ctz64(x) __builtin_ctzll (x) 1041 #define ecb_ctz64(x) __builtin_ctzll (x)
691 #define ecb_popcount32(x) __builtin_popcount (x) 1042 #define ecb_popcount32(x) __builtin_popcount (x)
692 /* no popcountll */ 1043 /* no popcountll */
693#else 1044#else
694 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; 1045 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
695 ecb_function_ int 1046 ecb_function_ ecb_const int
696 ecb_ctz32 (uint32_t x) 1047 ecb_ctz32 (uint32_t x)
697 { 1048 {
1049#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1050 unsigned long r;
1051 _BitScanForward (&r, x);
1052 return (int)r;
1053#else
698 int r = 0; 1054 int r = 0;
699 1055
700 x &= ~x + 1; /* this isolates the lowest bit */ 1056 x &= ~x + 1; /* this isolates the lowest bit */
701 1057
702#if ECB_branchless_on_i386 1058#if ECB_branchless_on_i386
… …
712 if (x & 0xff00ff00) r += 8; 1068 if (x & 0xff00ff00) r += 8;
713 if (x & 0xffff0000) r += 16; 1069 if (x & 0xffff0000) r += 16;
714#endif 1070#endif
715 1071
716 return r; 1072 return r;
1073#endif
717 } 1074 }
718 1075
719 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; 1076 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
720 ecb_function_ int 1077 ecb_function_ ecb_const int
721 ecb_ctz64 (uint64_t x) 1078 ecb_ctz64 (uint64_t x)
722 { 1079 {
1080#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1081 unsigned long r;
1082 _BitScanForward64 (&r, x);
1083 return (int)r;
1084#else
723 int shift = x & 0xffffffffU ? 0 : 32; 1085 int shift = x & 0xffffffff ? 0 : 32;
724 return ecb_ctz32 (x >> shift) + shift; 1086 return ecb_ctz32 (x >> shift) + shift;
1087#endif
725 } 1088 }
726 1089
727 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; 1090 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
728 ecb_function_ int 1091 ecb_function_ ecb_const int
729 ecb_popcount32 (uint32_t x) 1092 ecb_popcount32 (uint32_t x)
730 { 1093 {
731 x -= (x >> 1) & 0x55555555; 1094 x -= (x >> 1) & 0x55555555;
732 x = ((x >> 2) & 0x33333333) + (x & 0x33333333); 1095 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
733 x = ((x >> 4) + x) & 0x0f0f0f0f; 1096 x = ((x >> 4) + x) & 0x0f0f0f0f;
734 x *= 0x01010101; 1097 x *= 0x01010101;
735 1098
736 return x >> 24; 1099 return x >> 24;
737 } 1100 }
738 1101
739 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; 1102 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
740 ecb_function_ int ecb_ld32 (uint32_t x) 1103 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
741 { 1104 {
1105#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1106 unsigned long r;
1107 _BitScanReverse (&r, x);
1108 return (int)r;
1109#else
742 int r = 0; 1110 int r = 0;
743 1111
744 if (x >> 16) { x >>= 16; r += 16; } 1112 if (x >> 16) { x >>= 16; r += 16; }
745 if (x >> 8) { x >>= 8; r += 8; } 1113 if (x >> 8) { x >>= 8; r += 8; }
746 if (x >> 4) { x >>= 4; r += 4; } 1114 if (x >> 4) { x >>= 4; r += 4; }
747 if (x >> 2) { x >>= 2; r += 2; } 1115 if (x >> 2) { x >>= 2; r += 2; }
748 if (x >> 1) { r += 1; } 1116 if (x >> 1) { r += 1; }
749 1117
750 return r; 1118 return r;
1119#endif
751 } 1120 }
752 1121
753 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; 1122 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
754 ecb_function_ int ecb_ld64 (uint64_t x) 1123 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
755 { 1124 {
1125#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1126 unsigned long r;
1127 _BitScanReverse64 (&r, x);
1128 return (int)r;
1129#else
756 int r = 0; 1130 int r = 0;
757 1131
758 if (x >> 32) { x >>= 32; r += 32; } 1132 if (x >> 32) { x >>= 32; r += 32; }
759 1133
760 return r + ecb_ld32 (x); 1134 return r + ecb_ld32 (x);
1135#endif
761 } 1136 }
762#endif 1137#endif
1138
1139ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1140ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1141ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1142ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1143
1144ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1145ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1146{
1147 return ( (x * 0x0802U & 0x22110U)
1148 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1149}
1150
1151ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1152ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1153{
1154 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1155 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1156 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1157 x = ( x >> 8 ) | ( x << 8);
1158
1159 return x;
1160}
1161
1162ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1163ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1164{
1165 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1166 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1167 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1168 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1169 x = ( x >> 16 ) | ( x << 16);
1170
1171 return x;
1172}
763 1173
764/* popcount64 is only available on 64 bit cpus as gcc builtin */ 1174/* popcount64 is only available on 64 bit cpus as gcc builtin */
765/* so for this version we are lazy */ 1175/* so for this version we are lazy */
766ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 1176ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
767ecb_function_ int 1177ecb_function_ ecb_const int
768ecb_popcount64 (uint64_t x) 1178ecb_popcount64 (uint64_t x)
769{ 1179{
770 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); 1180 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
771} 1181}
772 1182
773ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const; 1183ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
774ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const; 1184ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
775ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const; 1185ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
776ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const; 1186ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
777ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const; 1187ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
778ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const; 1188ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
779ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const; 1189ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
780ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const; 1190ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
781 1191
782ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); } 1192ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
783ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); } 1193ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
784ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); } 1194ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
785ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); } 1195ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
786ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } 1196ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
787ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } 1197ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
788ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } 1198ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
789ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } 1199ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
790 1200
791#if ECB_GCC_VERSION(4,3) 1201#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1202 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1203 #define ecb_bswap16(x) __builtin_bswap16 (x)
1204 #else
792 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 1205 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1206 #endif
793 #define ecb_bswap32(x) __builtin_bswap32 (x) 1207 #define ecb_bswap32(x) __builtin_bswap32 (x)
794 #define ecb_bswap64(x) __builtin_bswap64 (x) 1208 #define ecb_bswap64(x) __builtin_bswap64 (x)
1209#elif _MSC_VER
1210 #include <stdlib.h>
1211 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1212 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1213 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
795#else 1214#else
796 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; 1215 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
797 ecb_function_ uint16_t 1216 ecb_function_ ecb_const uint16_t
798 ecb_bswap16 (uint16_t x) 1217 ecb_bswap16 (uint16_t x)
799 { 1218 {
800 return ecb_rotl16 (x, 8); 1219 return ecb_rotl16 (x, 8);
801 } 1220 }
802 1221
803 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; 1222 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
804 ecb_function_ uint32_t 1223 ecb_function_ ecb_const uint32_t
805 ecb_bswap32 (uint32_t x) 1224 ecb_bswap32 (uint32_t x)
806 { 1225 {
807 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); 1226 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
808 } 1227 }
809 1228
810 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; 1229 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
811 ecb_function_ uint64_t 1230 ecb_function_ ecb_const uint64_t
812 ecb_bswap64 (uint64_t x) 1231 ecb_bswap64 (uint64_t x)
813 { 1232 {
814 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); 1233 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
815 } 1234 }
816#endif 1235#endif
817 1236
818#if ECB_GCC_VERSION(4,5) 1237#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
819 #define ecb_unreachable() __builtin_unreachable () 1238 #define ecb_unreachable() __builtin_unreachable ()
820#else 1239#else
821 /* this seems to work fine, but gcc always emits a warning for it :/ */ 1240 /* this seems to work fine, but gcc always emits a warning for it :/ */
822 ecb_function_ void ecb_unreachable (void) ecb_noreturn; 1241 ecb_inline ecb_noreturn void ecb_unreachable (void);
823 ecb_function_ void ecb_unreachable (void) { } 1242 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
824#endif 1243#endif
825 1244
826/* try to tell the compiler that some condition is definitely true */ 1245/* try to tell the compiler that some condition is definitely true */
827#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) 1246#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
828 1247
829ecb_function_ unsigned char ecb_byteorder_helper (void) ecb_const; 1248ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
830ecb_function_ unsigned char 1249ecb_inline ecb_const uint32_t
831ecb_byteorder_helper (void) 1250ecb_byteorder_helper (void)
832{ 1251{
833 const uint32_t u = 0x11223344; 1252 /* the union code still generates code under pressure in gcc, */
834 return *(unsigned char *)&u; 1253 /* but less than using pointers, and always seems to */
1254 /* successfully return a constant. */
1255 /* the reason why we have this horrible preprocessor mess */
1256 /* is to avoid it in all cases, at least on common architectures */
1257 /* or when using a recent enough gcc version (>= 4.6) */
1258#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1259 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1260 #define ECB_LITTLE_ENDIAN 1
1261 return 0x44332211;
1262#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1263 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1264 #define ECB_BIG_ENDIAN 1
1265 return 0x11223344;
1266#else
1267 union
1268 {
1269 uint8_t c[4];
1270 uint32_t u;
1271 } u = { 0x11, 0x22, 0x33, 0x44 };
1272 return u.u;
1273#endif
835} 1274}
836 1275
837ecb_function_ ecb_bool ecb_big_endian (void) ecb_const; 1276ecb_inline ecb_const ecb_bool ecb_big_endian (void);
838ecb_function_ ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } 1277ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
839ecb_function_ ecb_bool ecb_little_endian (void) ecb_const; 1278ecb_inline ecb_const ecb_bool ecb_little_endian (void);
840ecb_function_ ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } 1279ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
841 1280
842#if ECB_GCC_VERSION(3,0) || ECB_C99 1281#if ECB_GCC_VERSION(3,0) || ECB_C99
843 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) 1282 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
844#else 1283#else
845 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) 1284 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
846#endif 1285#endif
847 1286
848#if __cplusplus 1287#if ECB_CPP
849 template<typename T> 1288 template<typename T>
850 static inline T ecb_div_rd (T val, T div) 1289 static inline T ecb_div_rd (T val, T div)
851 { 1290 {
852 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; 1291 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
853 } 1292 }
… …
870 } 1309 }
871#else 1310#else
872 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1311 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
873#endif 1312#endif
874 1313
1314ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1315ecb_function_ ecb_const uint32_t
1316ecb_binary16_to_binary32 (uint32_t x)
1317{
1318 unsigned int s = (x & 0x8000) << (31 - 15);
1319 int e = (x >> 10) & 0x001f;
1320 unsigned int m = x & 0x03ff;
1321
1322 if (ecb_expect_false (e == 31))
1323 /* infinity or NaN */
1324 e = 255 - (127 - 15);
1325 else if (ecb_expect_false (!e))
1326 {
1327 if (ecb_expect_true (!m))
1328 /* zero, handled by code below by forcing e to 0 */
1329 e = 0 - (127 - 15);
1330 else
1331 {
1332 /* subnormal, renormalise */
1333 unsigned int s = 10 - ecb_ld32 (m);
1334
1335 m = (m << s) & 0x3ff; /* mask implicit bit */
1336 e -= s - 1;
1337 }
1338 }
1339
1340 /* e and m now are normalised, or zero, (or inf or nan) */
1341 e += 127 - 15;
1342
1343 return s | (e << 23) | (m << (23 - 10));
1344}
1345
1346ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1347ecb_function_ ecb_const uint16_t
1348ecb_binary32_to_binary16 (uint32_t x)
1349{
1350 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1351 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1352 unsigned int m = x & 0x007fffff;
1353
1354 x &= 0x7fffffff;
1355
1356 /* if it's within range of binary16 normals, use fast path */
1357 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1358 {
1359 /* mantissa round-to-even */
1360 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1361
1362 /* handle overflow */
1363 if (ecb_expect_false (m >= 0x00800000))
1364 {
1365 m >>= 1;
1366 e += 1;
1367 }
1368
1369 return s | (e << 10) | (m >> (23 - 10));
1370 }
1371
1372 /* handle large numbers and infinity */
1373 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1374 return s | 0x7c00;
1375
1376 /* handle zero, subnormals and small numbers */
1377 if (ecb_expect_true (x < 0x38800000))
1378 {
1379 /* zero */
1380 if (ecb_expect_true (!x))
1381 return s;
1382
1383 /* handle subnormals */
1384
1385 /* too small, will be zero */
1386 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1387 return s;
1388
1389 m |= 0x00800000; /* make implicit bit explicit */
1390
1391 /* very tricky - we need to round to the nearest e (+10) bit value */
1392 {
1393 unsigned int bits = 14 - e;
1394 unsigned int half = (1 << (bits - 1)) - 1;
1395 unsigned int even = (m >> bits) & 1;
1396
1397 /* if this overflows, we will end up with a normalised number */
1398 m = (m + half + even) >> bits;
1399 }
1400
1401 return s | m;
1402 }
1403
1404 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1405 m >>= 13;
1406
1407 return s | 0x7c00 | m | !m;
1408}
1409
1410/*******************************************************************************/
1411/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1412
1413/* basically, everything uses "ieee pure-endian" floating point numbers */
1414/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1415#if 0 \
1416 || __i386 || __i386__ \
1417 || ECB_GCC_AMD64 \
1418 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1419 || defined __s390__ || defined __s390x__ \
1420 || defined __mips__ \
1421 || defined __alpha__ \
1422 || defined __hppa__ \
1423 || defined __ia64__ \
1424 || defined __m68k__ \
1425 || defined __m88k__ \
1426 || defined __sh__ \
1427 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1428 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1429 || defined __aarch64__
1430 #define ECB_STDFP 1
1431 #include <string.h> /* for memcpy */
1432#else
1433 #define ECB_STDFP 0
1434#endif
1435
1436#ifndef ECB_NO_LIBM
1437
1438 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1439
1440 /* only the oldest of old doesn't have this one. solaris. */
1441 #ifdef INFINITY
1442 #define ECB_INFINITY INFINITY
1443 #else
1444 #define ECB_INFINITY HUGE_VAL
1445 #endif
1446
1447 #ifdef NAN
1448 #define ECB_NAN NAN
1449 #else
1450 #define ECB_NAN ECB_INFINITY
1451 #endif
1452
1453 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1454 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1455 #define ecb_frexpf(x,e) frexpf ((x), (e))
1456 #else
1457 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1458 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1459 #endif
1460
1461 /* convert a float to ieee single/binary32 */
1462 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1463 ecb_function_ ecb_const uint32_t
1464 ecb_float_to_binary32 (float x)
1465 {
1466 uint32_t r;
1467
1468 #if ECB_STDFP
1469 memcpy (&r, &x, 4);
1470 #else
1471 /* slow emulation, works for anything but -0 */
1472 uint32_t m;
1473 int e;
1474
1475 if (x == 0e0f ) return 0x00000000U;
1476 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1477 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1478 if (x != x ) return 0x7fbfffffU;
1479
1480 m = ecb_frexpf (x, &e) * 0x1000000U;
1481
1482 r = m & 0x80000000U;
1483
1484 if (r)
1485 m = -m;
1486
1487 if (e <= -126)
1488 {
1489 m &= 0xffffffU;
1490 m >>= (-125 - e);
1491 e = -126;
1492 }
1493
1494 r |= (e + 126) << 23;
1495 r |= m & 0x7fffffU;
1496 #endif
1497
1498 return r;
1499 }
1500
1501 /* converts an ieee single/binary32 to a float */
1502 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1503 ecb_function_ ecb_const float
1504 ecb_binary32_to_float (uint32_t x)
1505 {
1506 float r;
1507
1508 #if ECB_STDFP
1509 memcpy (&r, &x, 4);
1510 #else
1511 /* emulation, only works for normals and subnormals and +0 */
1512 int neg = x >> 31;
1513 int e = (x >> 23) & 0xffU;
1514
1515 x &= 0x7fffffU;
1516
1517 if (e)
1518 x |= 0x800000U;
1519 else
1520 e = 1;
1521
1522 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1523 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1524
1525 r = neg ? -r : r;
1526 #endif
1527
1528 return r;
1529 }
1530
1531 /* convert a double to ieee double/binary64 */
1532 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1533 ecb_function_ ecb_const uint64_t
1534 ecb_double_to_binary64 (double x)
1535 {
1536 uint64_t r;
1537
1538 #if ECB_STDFP
1539 memcpy (&r, &x, 8);
1540 #else
1541 /* slow emulation, works for anything but -0 */
1542 uint64_t m;
1543 int e;
1544
1545 if (x == 0e0 ) return 0x0000000000000000U;
1546 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1547 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1548 if (x != x ) return 0X7ff7ffffffffffffU;
1549
1550 m = frexp (x, &e) * 0x20000000000000U;
1551
1552 r = m & 0x8000000000000000;;
1553
1554 if (r)
1555 m = -m;
1556
1557 if (e <= -1022)
1558 {
1559 m &= 0x1fffffffffffffU;
1560 m >>= (-1021 - e);
1561 e = -1022;
1562 }
1563
1564 r |= ((uint64_t)(e + 1022)) << 52;
1565 r |= m & 0xfffffffffffffU;
1566 #endif
1567
1568 return r;
1569 }
1570
1571 /* converts an ieee double/binary64 to a double */
1572 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1573 ecb_function_ ecb_const double
1574 ecb_binary64_to_double (uint64_t x)
1575 {
1576 double r;
1577
1578 #if ECB_STDFP
1579 memcpy (&r, &x, 8);
1580 #else
1581 /* emulation, only works for normals and subnormals and +0 */
1582 int neg = x >> 63;
1583 int e = (x >> 52) & 0x7ffU;
1584
1585 x &= 0xfffffffffffffU;
1586
1587 if (e)
1588 x |= 0x10000000000000U;
1589 else
1590 e = 1;
1591
1592 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1593 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1594
1595 r = neg ? -r : r;
1596 #endif
1597
1598 return r;
1599 }
1600
1601 /* convert a float to ieee half/binary16 */
1602 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1603 ecb_function_ ecb_const uint16_t
1604 ecb_float_to_binary16 (float x)
1605 {
1606 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1607 }
1608
1609 /* convert an ieee half/binary16 to float */
1610 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1611 ecb_function_ ecb_const float
1612 ecb_binary16_to_float (uint16_t x)
1613 {
1614 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1615 }
1616
1617#endif
1618
875#endif 1619#endif
876 1620
877/* ECB.H END */ 1621/* ECB.H END */
878 1622
879#if ECB_MEMORY_FENCE_NEEDS_PTHREADS 1623#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
880/* if your architecture doesn't need memory fences, e.g. because it is 1624/* if your architecture doesn't need memory fences, e.g. because it is
881 * single-cpu/core, or if you use libev in a project that doesn't use libev 1625 * single-cpu/core, or if you use libev in a project that doesn't use libev
882 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling 1626 * from multiple threads, then you can define ECB_NO_THREADS when compiling
883 * libev, in which casess the memory fences become nops. 1627 * libev, in which cases the memory fences become nops.
884 * alternatively, you can remove this #error and link against libpthread, 1628 * alternatively, you can remove this #error and link against libpthread,
885 * which will then provide the memory fences. 1629 * which will then provide the memory fences.
886 */ 1630 */
887# error "memory fences not defined for your architecture, please report" 1631# error "memory fences not defined for your architecture, please report"
888#endif 1632#endif
… …
891# define ECB_MEMORY_FENCE do { } while (0) 1635# define ECB_MEMORY_FENCE do { } while (0)
892# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 1636# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
893# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 1637# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
894#endif 1638#endif
895 1639
896#define expect_false(cond) ecb_expect_false (cond)
897#define expect_true(cond) ecb_expect_true (cond)
898#define noinline ecb_noinline
899
900#define inline_size ecb_inline 1640#define inline_size ecb_inline
901 1641
902#if EV_FEATURE_CODE 1642#if EV_FEATURE_CODE
903# define inline_speed ecb_inline 1643# define inline_speed ecb_inline
904#else 1644#else
905# define inline_speed static noinline 1645# define inline_speed ecb_noinline static
906#endif 1646#endif
907 1647
908#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1648#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
909 1649
910#if EV_MINPRI == EV_MAXPRI 1650#if EV_MINPRI == EV_MAXPRI
911# define ABSPRI(w) (((W)w), 0) 1651# define ABSPRI(w) (((W)w), 0)
912#else 1652#else
913# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1653# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
914#endif 1654#endif
915 1655
916#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1656#define EMPTY /* required for microsofts broken pseudo-c compiler */
917#define EMPTY2(a,b) /* used to suppress some warnings */
918 1657
919typedef ev_watcher *W; 1658typedef ev_watcher *W;
920typedef ev_watcher_list *WL; 1659typedef ev_watcher_list *WL;
921typedef ev_watcher_time *WT; 1660typedef ev_watcher_time *WT;
922 1661
… …
947# include "ev_win32.c" 1686# include "ev_win32.c"
948#endif 1687#endif
949 1688
950/*****************************************************************************/ 1689/*****************************************************************************/
951 1690
1691#if EV_USE_LINUXAIO
1692# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1693#endif
1694
952/* define a suitable floor function (only used by periodics atm) */ 1695/* define a suitable floor function (only used by periodics atm) */
953 1696
954#if EV_USE_FLOOR 1697#if EV_USE_FLOOR
955# include <math.h> 1698# include <math.h>
956# define ev_floor(v) floor (v) 1699# define ev_floor(v) floor (v)
957#else 1700#else
958 1701
959#include <float.h> 1702#include <float.h>
960 1703
961/* a floor() replacement function, should be independent of ev_tstamp type */ 1704/* a floor() replacement function, should be independent of ev_tstamp type */
1705ecb_noinline
962static ev_tstamp noinline 1706static ev_tstamp
963ev_floor (ev_tstamp v) 1707ev_floor (ev_tstamp v)
964{ 1708{
965 /* the choice of shift factor is not terribly important */ 1709 /* the choice of shift factor is not terribly important */
966#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1710#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
967 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1711 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
968#else 1712#else
969 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; 1713 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
970#endif 1714#endif
971 1715
972 /* argument too large for an unsigned long? */ 1716 /* argument too large for an unsigned long? */
973 if (expect_false (v >= shift)) 1717 if (ecb_expect_false (v >= shift))
974 { 1718 {
975 ev_tstamp f; 1719 ev_tstamp f;
976 1720
977 if (v == v - 1.) 1721 if (v == v - 1.)
978 return v; /* very large number */ 1722 return v; /* very large number */
… …
980 f = shift * ev_floor (v * (1. / shift)); 1724 f = shift * ev_floor (v * (1. / shift));
981 return f + ev_floor (v - f); 1725 return f + ev_floor (v - f);
982 } 1726 }
983 1727
984 /* special treatment for negative args? */ 1728 /* special treatment for negative args? */
985 if (expect_false (v < 0.)) 1729 if (ecb_expect_false (v < 0.))
986 { 1730 {
987 ev_tstamp f = -ev_floor (-v); 1731 ev_tstamp f = -ev_floor (-v);
988 1732
989 return f - (f == v ? 0 : 1); 1733 return f - (f == v ? 0 : 1);
990 } 1734 }
… …
999 1743
1000#ifdef __linux 1744#ifdef __linux
1001# include <sys/utsname.h> 1745# include <sys/utsname.h>
1002#endif 1746#endif
1003 1747
1004static unsigned int noinline ecb_cold 1748ecb_noinline ecb_cold
1749static unsigned int
1005ev_linux_version (void) 1750ev_linux_version (void)
1006{ 1751{
1007#ifdef __linux 1752#ifdef __linux
1008 unsigned int v = 0; 1753 unsigned int v = 0;
1009 struct utsname buf; 1754 struct utsname buf;
… …
1038} 1783}
1039 1784
1040/*****************************************************************************/ 1785/*****************************************************************************/
1041 1786
1042#if EV_AVOID_STDIO 1787#if EV_AVOID_STDIO
1043static void noinline ecb_cold 1788ecb_noinline ecb_cold
1789static void
1044ev_printerr (const char *msg) 1790ev_printerr (const char *msg)
1045{ 1791{
1046 write (STDERR_FILENO, msg, strlen (msg)); 1792 write (STDERR_FILENO, msg, strlen (msg));
1047} 1793}
1048#endif 1794#endif
1049 1795
1050static void (*syserr_cb)(const char *msg); 1796static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
1051 1797
1052void ecb_cold 1798ecb_cold
1799void
1053ev_set_syserr_cb (void (*cb)(const char *msg)) 1800ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
1054{ 1801{
1055 syserr_cb = cb; 1802 syserr_cb = cb;
1056} 1803}
1057 1804
1058static void noinline ecb_cold 1805ecb_noinline ecb_cold
1806static void
1059ev_syserr (const char *msg) 1807ev_syserr (const char *msg)
1060{ 1808{
1061 if (!msg) 1809 if (!msg)
1062 msg = "(libev) system error"; 1810 msg = "(libev) system error";
1063 1811
… …
1076 abort (); 1824 abort ();
1077 } 1825 }
1078} 1826}
1079 1827
1080static void * 1828static void *
1081ev_realloc_emul (void *ptr, long size) 1829ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
1082{ 1830{
1083#if __GLIBC__
1084 return realloc (ptr, size);
1085#else
1086 /* some systems, notably openbsd and darwin, fail to properly 1831 /* some systems, notably openbsd and darwin, fail to properly
1087 * implement realloc (x, 0) (as required by both ansi c-89 and 1832 * implement realloc (x, 0) (as required by both ansi c-89 and
1088 * the single unix specification, so work around them here. 1833 * the single unix specification, so work around them here.
1834 * recently, also (at least) fedora and debian started breaking it,
1835 * despite documenting it otherwise.
1089 */ 1836 */
1090 1837
1091 if (size) 1838 if (size)
1092 return realloc (ptr, size); 1839 return realloc (ptr, size);
1093 1840
1094 free (ptr); 1841 free (ptr);
1095 return 0; 1842 return 0;
1096#endif
1097} 1843}
1098 1844
1099static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1845static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
1100 1846
1101void ecb_cold 1847ecb_cold
1848void
1102ev_set_allocator (void *(*cb)(void *ptr, long size)) 1849ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
1103{ 1850{
1104 alloc = cb; 1851 alloc = cb;
1105} 1852}
1106 1853
1107inline_speed void * 1854inline_speed void *
… …
1134typedef struct 1881typedef struct
1135{ 1882{
1136 WL head; 1883 WL head;
1137 unsigned char events; /* the events watched for */ 1884 unsigned char events; /* the events watched for */
1138 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 1885 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
1139 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1886 unsigned char emask; /* some backends store the actual kernel mask in here */
1140 unsigned char unused; 1887 unsigned char unused;
1141#if EV_USE_EPOLL 1888#if EV_USE_EPOLL
1142 unsigned int egen; /* generation counter to counter epoll bugs */ 1889 unsigned int egen; /* generation counter to counter epoll bugs */
1143#endif 1890#endif
1144#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 1891#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
… …
1195 #undef VAR 1942 #undef VAR
1196 }; 1943 };
1197 #include "ev_wrap.h" 1944 #include "ev_wrap.h"
1198 1945
1199 static struct ev_loop default_loop_struct; 1946 static struct ev_loop default_loop_struct;
1200 struct ev_loop *ev_default_loop_ptr; 1947 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
1201 1948
1202#else 1949#else
1203 1950
1204 ev_tstamp ev_rt_now; 1951 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
1205 #define VAR(name,decl) static decl; 1952 #define VAR(name,decl) static decl;
1206 #include "ev_vars.h" 1953 #include "ev_vars.h"
1207 #undef VAR 1954 #undef VAR
1208 1955
1209 static int ev_default_loop_ptr; 1956 static int ev_default_loop_ptr;
1210 1957
1211#endif 1958#endif
1212 1959
1213#if EV_FEATURE_API 1960#if EV_FEATURE_API
1214# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1961# define EV_RELEASE_CB if (ecb_expect_false (release_cb)) release_cb (EV_A)
1215# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 1962# define EV_ACQUIRE_CB if (ecb_expect_false (acquire_cb)) acquire_cb (EV_A)
1216# define EV_INVOKE_PENDING invoke_cb (EV_A) 1963# define EV_INVOKE_PENDING invoke_cb (EV_A)
1217#else 1964#else
1218# define EV_RELEASE_CB (void)0 1965# define EV_RELEASE_CB (void)0
1219# define EV_ACQUIRE_CB (void)0 1966# define EV_ACQUIRE_CB (void)0
1220# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1967# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
… …
1224 1971
1225/*****************************************************************************/ 1972/*****************************************************************************/
1226 1973
1227#ifndef EV_HAVE_EV_TIME 1974#ifndef EV_HAVE_EV_TIME
1228ev_tstamp 1975ev_tstamp
1229ev_time (void) 1976ev_time (void) EV_NOEXCEPT
1230{ 1977{
1231#if EV_USE_REALTIME 1978#if EV_USE_REALTIME
1232 if (expect_true (have_realtime)) 1979 if (ecb_expect_true (have_realtime))
1233 { 1980 {
1234 struct timespec ts; 1981 struct timespec ts;
1235 clock_gettime (CLOCK_REALTIME, &ts); 1982 clock_gettime (CLOCK_REALTIME, &ts);
1236 return ts.tv_sec + ts.tv_nsec * 1e-9; 1983 return ts.tv_sec + ts.tv_nsec * 1e-9;
1237 } 1984 }
… …
1245 1992
1246inline_size ev_tstamp 1993inline_size ev_tstamp
1247get_clock (void) 1994get_clock (void)
1248{ 1995{
1249#if EV_USE_MONOTONIC 1996#if EV_USE_MONOTONIC
1250 if (expect_true (have_monotonic)) 1997 if (ecb_expect_true (have_monotonic))
1251 { 1998 {
1252 struct timespec ts; 1999 struct timespec ts;
1253 clock_gettime (CLOCK_MONOTONIC, &ts); 2000 clock_gettime (CLOCK_MONOTONIC, &ts);
1254 return ts.tv_sec + ts.tv_nsec * 1e-9; 2001 return ts.tv_sec + ts.tv_nsec * 1e-9;
1255 } 2002 }
… …
1258 return ev_time (); 2005 return ev_time ();
1259} 2006}
1260 2007
1261#if EV_MULTIPLICITY 2008#if EV_MULTIPLICITY
1262ev_tstamp 2009ev_tstamp
1263ev_now (EV_P) 2010ev_now (EV_P) EV_NOEXCEPT
1264{ 2011{
1265 return ev_rt_now; 2012 return ev_rt_now;
1266} 2013}
1267#endif 2014#endif
1268 2015
1269void 2016void
1270ev_sleep (ev_tstamp delay) 2017ev_sleep (ev_tstamp delay) EV_NOEXCEPT
1271{ 2018{
1272 if (delay > 0.) 2019 if (delay > 0.)
1273 { 2020 {
1274#if EV_USE_NANOSLEEP 2021#if EV_USE_NANOSLEEP
1275 struct timespec ts; 2022 struct timespec ts;
1276 2023
1277 EV_TS_SET (ts, delay); 2024 EV_TS_SET (ts, delay);
1278 nanosleep (&ts, 0); 2025 nanosleep (&ts, 0);
1279#elif defined(_WIN32) 2026#elif defined _WIN32
2027 /* maybe this should round up, as ms is very low resolution */
2028 /* compared to select (µs) or nanosleep (ns) */
1280 Sleep ((unsigned long)(delay * 1e3)); 2029 Sleep ((unsigned long)(delay * 1e3));
1281#else 2030#else
1282 struct timeval tv; 2031 struct timeval tv;
1283 2032
1284 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 2033 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
… …
1303 2052
1304 do 2053 do
1305 ncur <<= 1; 2054 ncur <<= 1;
1306 while (cnt > ncur); 2055 while (cnt > ncur);
1307 2056
1308 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 2057 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
1309 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 2058 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
1310 { 2059 {
1311 ncur *= elem; 2060 ncur *= elem;
1312 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 2061 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
1313 ncur = ncur - sizeof (void *) * 4; 2062 ncur = ncur - sizeof (void *) * 4;
… …
1315 } 2064 }
1316 2065
1317 return ncur; 2066 return ncur;
1318} 2067}
1319 2068
1320static void * noinline ecb_cold 2069ecb_noinline ecb_cold
2070static void *
1321array_realloc (int elem, void *base, int *cur, int cnt) 2071array_realloc (int elem, void *base, int *cur, int cnt)
1322{ 2072{
1323 *cur = array_nextsize (elem, *cur, cnt); 2073 *cur = array_nextsize (elem, *cur, cnt);
1324 return ev_realloc (base, elem * *cur); 2074 return ev_realloc (base, elem * *cur);
1325} 2075}
1326 2076
2077#define array_needsize_noinit(base,offset,count)
2078
1327#define array_init_zero(base,count) \ 2079#define array_needsize_zerofill(base,offset,count) \
1328 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2080 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
1329 2081
1330#define array_needsize(type,base,cur,cnt,init) \ 2082#define array_needsize(type,base,cur,cnt,init) \
1331 if (expect_false ((cnt) > (cur))) \ 2083 if (ecb_expect_false ((cnt) > (cur))) \
1332 { \ 2084 { \
1333 int ecb_unused ocur_ = (cur); \ 2085 ecb_unused int ocur_ = (cur); \
1334 (base) = (type *)array_realloc \ 2086 (base) = (type *)array_realloc \
1335 (sizeof (type), (base), &(cur), (cnt)); \ 2087 (sizeof (type), (base), &(cur), (cnt)); \
1336 init ((base) + (ocur_), (cur) - ocur_); \ 2088 init ((base), ocur_, ((cur) - ocur_)); \
1337 } 2089 }
1338 2090
1339#if 0 2091#if 0
1340#define array_slim(type,stem) \ 2092#define array_slim(type,stem) \
1341 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2093 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
1350 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2102 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
1351 2103
1352/*****************************************************************************/ 2104/*****************************************************************************/
1353 2105
1354/* dummy callback for pending events */ 2106/* dummy callback for pending events */
1355static void noinline 2107ecb_noinline
2108static void
1356pendingcb (EV_P_ ev_prepare *w, int revents) 2109pendingcb (EV_P_ ev_prepare *w, int revents)
1357{ 2110{
1358} 2111}
1359 2112
1360void noinline 2113ecb_noinline
2114void
1361ev_feed_event (EV_P_ void *w, int revents) 2115ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
1362{ 2116{
1363 W w_ = (W)w; 2117 W w_ = (W)w;
1364 int pri = ABSPRI (w_); 2118 int pri = ABSPRI (w_);
1365 2119
1366 if (expect_false (w_->pending)) 2120 if (ecb_expect_false (w_->pending))
1367 pendings [pri][w_->pending - 1].events |= revents; 2121 pendings [pri][w_->pending - 1].events |= revents;
1368 else 2122 else
1369 { 2123 {
1370 w_->pending = ++pendingcnt [pri]; 2124 w_->pending = ++pendingcnt [pri];
1371 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2125 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
1372 pendings [pri][w_->pending - 1].w = w_; 2126 pendings [pri][w_->pending - 1].w = w_;
1373 pendings [pri][w_->pending - 1].events = revents; 2127 pendings [pri][w_->pending - 1].events = revents;
1374 } 2128 }
2129
2130 pendingpri = NUMPRI - 1;
1375} 2131}
1376 2132
1377inline_speed void 2133inline_speed void
1378feed_reverse (EV_P_ W w) 2134feed_reverse (EV_P_ W w)
1379{ 2135{
1380 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2136 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
1381 rfeeds [rfeedcnt++] = w; 2137 rfeeds [rfeedcnt++] = w;
1382} 2138}
1383 2139
1384inline_size void 2140inline_size void
1385feed_reverse_done (EV_P_ int revents) 2141feed_reverse_done (EV_P_ int revents)
… …
1420inline_speed void 2176inline_speed void
1421fd_event (EV_P_ int fd, int revents) 2177fd_event (EV_P_ int fd, int revents)
1422{ 2178{
1423 ANFD *anfd = anfds + fd; 2179 ANFD *anfd = anfds + fd;
1424 2180
1425 if (expect_true (!anfd->reify)) 2181 if (ecb_expect_true (!anfd->reify))
1426 fd_event_nocheck (EV_A_ fd, revents); 2182 fd_event_nocheck (EV_A_ fd, revents);
1427} 2183}
1428 2184
1429void 2185void
1430ev_feed_fd_event (EV_P_ int fd, int revents) 2186ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
1431{ 2187{
1432 if (fd >= 0 && fd < anfdmax) 2188 if (fd >= 0 && fd < anfdmax)
1433 fd_event_nocheck (EV_A_ fd, revents); 2189 fd_event_nocheck (EV_A_ fd, revents);
1434} 2190}
1435 2191
… …
1472 ev_io *w; 2228 ev_io *w;
1473 2229
1474 unsigned char o_events = anfd->events; 2230 unsigned char o_events = anfd->events;
1475 unsigned char o_reify = anfd->reify; 2231 unsigned char o_reify = anfd->reify;
1476 2232
1477 anfd->reify = 0; 2233 anfd->reify = 0;
1478 2234
1479 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 2235 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
1480 { 2236 {
1481 anfd->events = 0; 2237 anfd->events = 0;
1482 2238
1483 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2239 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1484 anfd->events |= (unsigned char)w->events; 2240 anfd->events |= (unsigned char)w->events;
… …
1493 2249
1494 fdchangecnt = 0; 2250 fdchangecnt = 0;
1495} 2251}
1496 2252
1497/* something about the given fd changed */ 2253/* something about the given fd changed */
1498inline_size void 2254inline_size
2255void
1499fd_change (EV_P_ int fd, int flags) 2256fd_change (EV_P_ int fd, int flags)
1500{ 2257{
1501 unsigned char reify = anfds [fd].reify; 2258 unsigned char reify = anfds [fd].reify;
1502 anfds [fd].reify |= flags; 2259 anfds [fd].reify |= flags;
1503 2260
1504 if (expect_true (!reify)) 2261 if (ecb_expect_true (!reify))
1505 { 2262 {
1506 ++fdchangecnt; 2263 ++fdchangecnt;
1507 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2264 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
1508 fdchanges [fdchangecnt - 1] = fd; 2265 fdchanges [fdchangecnt - 1] = fd;
1509 } 2266 }
1510} 2267}
1511 2268
1512/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2269/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1513inline_speed void ecb_cold 2270inline_speed ecb_cold void
1514fd_kill (EV_P_ int fd) 2271fd_kill (EV_P_ int fd)
1515{ 2272{
1516 ev_io *w; 2273 ev_io *w;
1517 2274
1518 while ((w = (ev_io *)anfds [fd].head)) 2275 while ((w = (ev_io *)anfds [fd].head))
… …
1521 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2278 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1522 } 2279 }
1523} 2280}
1524 2281
1525/* check whether the given fd is actually valid, for error recovery */ 2282/* check whether the given fd is actually valid, for error recovery */
1526inline_size int ecb_cold 2283inline_size ecb_cold int
1527fd_valid (int fd) 2284fd_valid (int fd)
1528{ 2285{
1529#ifdef _WIN32 2286#ifdef _WIN32
1530 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2287 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1531#else 2288#else
1532 return fcntl (fd, F_GETFD) != -1; 2289 return fcntl (fd, F_GETFD) != -1;
1533#endif 2290#endif
1534} 2291}
1535 2292
1536/* called on EBADF to verify fds */ 2293/* called on EBADF to verify fds */
1537static void noinline ecb_cold 2294ecb_noinline ecb_cold
2295static void
1538fd_ebadf (EV_P) 2296fd_ebadf (EV_P)
1539{ 2297{
1540 int fd; 2298 int fd;
1541 2299
1542 for (fd = 0; fd < anfdmax; ++fd) 2300 for (fd = 0; fd < anfdmax; ++fd)
… …
1544 if (!fd_valid (fd) && errno == EBADF) 2302 if (!fd_valid (fd) && errno == EBADF)
1545 fd_kill (EV_A_ fd); 2303 fd_kill (EV_A_ fd);
1546} 2304}
1547 2305
1548/* called on ENOMEM in select/poll to kill some fds and retry */ 2306/* called on ENOMEM in select/poll to kill some fds and retry */
1549static void noinline ecb_cold 2307ecb_noinline ecb_cold
2308static void
1550fd_enomem (EV_P) 2309fd_enomem (EV_P)
1551{ 2310{
1552 int fd; 2311 int fd;
1553 2312
1554 for (fd = anfdmax; fd--; ) 2313 for (fd = anfdmax; fd--; )
… …
1558 break; 2317 break;
1559 } 2318 }
1560} 2319}
1561 2320
1562/* usually called after fork if backend needs to re-arm all fds from scratch */ 2321/* usually called after fork if backend needs to re-arm all fds from scratch */
1563static void noinline 2322ecb_noinline
2323static void
1564fd_rearm_all (EV_P) 2324fd_rearm_all (EV_P)
1565{ 2325{
1566 int fd; 2326 int fd;
1567 2327
1568 for (fd = 0; fd < anfdmax; ++fd) 2328 for (fd = 0; fd < anfdmax; ++fd)
… …
1621 ev_tstamp minat; 2381 ev_tstamp minat;
1622 ANHE *minpos; 2382 ANHE *minpos;
1623 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2383 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1624 2384
1625 /* find minimum child */ 2385 /* find minimum child */
1626 if (expect_true (pos + DHEAP - 1 < E)) 2386 if (ecb_expect_true (pos + DHEAP - 1 < E))
1627 { 2387 {
1628 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2388 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1629 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2389 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1630 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2390 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1631 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2391 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
… …
1749 2509
1750/*****************************************************************************/ 2510/*****************************************************************************/
1751 2511
1752#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2512#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1753 2513
1754static void noinline ecb_cold 2514ecb_noinline ecb_cold
2515static void
1755evpipe_init (EV_P) 2516evpipe_init (EV_P)
1756{ 2517{
1757 if (!ev_is_active (&pipe_w)) 2518 if (!ev_is_active (&pipe_w))
1758 { 2519 {
2520 int fds [2];
2521
1759# if EV_USE_EVENTFD 2522# if EV_USE_EVENTFD
2523 fds [0] = -1;
1760 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2524 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1761 if (evfd < 0 && errno == EINVAL) 2525 if (fds [1] < 0 && errno == EINVAL)
1762 evfd = eventfd (0, 0); 2526 fds [1] = eventfd (0, 0);
1763 2527
1764 if (evfd >= 0) 2528 if (fds [1] < 0)
2529# endif
1765 { 2530 {
2531 while (pipe (fds))
2532 ev_syserr ("(libev) error creating signal/async pipe");
2533
2534 fd_intern (fds [0]);
2535 }
2536
1766 evpipe [0] = -1; 2537 evpipe [0] = fds [0];
1767 fd_intern (evfd); /* doing it twice doesn't hurt */ 2538
1768 ev_io_set (&pipe_w, evfd, EV_READ); 2539 if (evpipe [1] < 0)
2540 evpipe [1] = fds [1]; /* first call, set write fd */
2541 else
2542 {
2543 /* on subsequent calls, do not change evpipe [1] */
2544 /* so that evpipe_write can always rely on its value. */
2545 /* this branch does not do anything sensible on windows, */
2546 /* so must not be executed on windows */
2547
2548 dup2 (fds [1], evpipe [1]);
2549 close (fds [1]);
2550 }
2551
2552 fd_intern (evpipe [1]);
2553
2554 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2555 ev_io_start (EV_A_ &pipe_w);
2556 ev_unref (EV_A); /* watcher should not keep loop alive */
2557 }
2558}
2559
2560inline_speed void
2561evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2562{
2563 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2564
2565 if (ecb_expect_true (*flag))
2566 return;
2567
2568 *flag = 1;
2569 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2570
2571 pipe_write_skipped = 1;
2572
2573 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2574
2575 if (pipe_write_wanted)
2576 {
2577 int old_errno;
2578
2579 pipe_write_skipped = 0;
2580 ECB_MEMORY_FENCE_RELEASE;
2581
2582 old_errno = errno; /* save errno because write will clobber it */
2583
2584#if EV_USE_EVENTFD
2585 if (evpipe [0] < 0)
2586 {
2587 uint64_t counter = 1;
2588 write (evpipe [1], &counter, sizeof (uint64_t));
1769 } 2589 }
1770 else 2590 else
1771# endif 2591#endif
1772 { 2592 {
1773 while (pipe (evpipe)) 2593#ifdef _WIN32
1774 ev_syserr ("(libev) error creating signal/async pipe"); 2594 WSABUF buf;
1775 2595 DWORD sent;
1776 fd_intern (evpipe [0]); 2596 buf.buf = (char *)&buf;
1777 fd_intern (evpipe [1]); 2597 buf.len = 1;
1778 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2598 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1779 } 2599#else
1780
1781 ev_io_start (EV_A_ &pipe_w);
1782 ev_unref (EV_A); /* watcher should not keep loop alive */
1783 }
1784}
1785
1786inline_speed void
1787evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1788{
1789 if (expect_true (*flag))
1790 return;
1791
1792 *flag = 1;
1793
1794 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1795
1796 pipe_write_skipped = 1;
1797
1798 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1799
1800 if (pipe_write_wanted)
1801 {
1802 int old_errno;
1803
1804 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1805
1806 old_errno = errno; /* save errno because write will clobber it */
1807
1808#if EV_USE_EVENTFD
1809 if (evfd >= 0)
1810 {
1811 uint64_t counter = 1;
1812 write (evfd, &counter, sizeof (uint64_t));
1813 }
1814 else
1815#endif
1816 {
1817 /* win32 people keep sending patches that change this write() to send() */
1818 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1819 /* so when you think this write should be a send instead, please find out */
1820 /* where your send() is from - it's definitely not the microsoft send, and */
1821 /* tell me. thank you. */
1822 write (evpipe [1], &(evpipe [1]), 1); 2600 write (evpipe [1], &(evpipe [1]), 1);
2601#endif
1823 } 2602 }
1824 2603
1825 errno = old_errno; 2604 errno = old_errno;
1826 } 2605 }
1827} 2606}
… …
1834 int i; 2613 int i;
1835 2614
1836 if (revents & EV_READ) 2615 if (revents & EV_READ)
1837 { 2616 {
1838#if EV_USE_EVENTFD 2617#if EV_USE_EVENTFD
1839 if (evfd >= 0) 2618 if (evpipe [0] < 0)
1840 { 2619 {
1841 uint64_t counter; 2620 uint64_t counter;
1842 read (evfd, &counter, sizeof (uint64_t)); 2621 read (evpipe [1], &counter, sizeof (uint64_t));
1843 } 2622 }
1844 else 2623 else
1845#endif 2624#endif
1846 { 2625 {
1847 char dummy; 2626 char dummy[4];
1848 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2627#ifdef _WIN32
2628 WSABUF buf;
2629 DWORD recvd;
2630 DWORD flags = 0;
2631 buf.buf = dummy;
2632 buf.len = sizeof (dummy);
2633 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2634#else
1849 read (evpipe [0], &dummy, 1); 2635 read (evpipe [0], &dummy, sizeof (dummy));
2636#endif
1850 } 2637 }
1851 } 2638 }
1852 2639
1853 pipe_write_skipped = 0; 2640 pipe_write_skipped = 0;
2641
2642 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1854 2643
1855#if EV_SIGNAL_ENABLE 2644#if EV_SIGNAL_ENABLE
1856 if (sig_pending) 2645 if (sig_pending)
1857 { 2646 {
1858 sig_pending = 0; 2647 sig_pending = 0;
1859 2648
2649 ECB_MEMORY_FENCE;
2650
1860 for (i = EV_NSIG - 1; i--; ) 2651 for (i = EV_NSIG - 1; i--; )
1861 if (expect_false (signals [i].pending)) 2652 if (ecb_expect_false (signals [i].pending))
1862 ev_feed_signal_event (EV_A_ i + 1); 2653 ev_feed_signal_event (EV_A_ i + 1);
1863 } 2654 }
1864#endif 2655#endif
1865 2656
1866#if EV_ASYNC_ENABLE 2657#if EV_ASYNC_ENABLE
1867 if (async_pending) 2658 if (async_pending)
1868 { 2659 {
1869 async_pending = 0; 2660 async_pending = 0;
2661
2662 ECB_MEMORY_FENCE;
1870 2663
1871 for (i = asynccnt; i--; ) 2664 for (i = asynccnt; i--; )
1872 if (asyncs [i]->sent) 2665 if (asyncs [i]->sent)
1873 { 2666 {
1874 asyncs [i]->sent = 0; 2667 asyncs [i]->sent = 0;
2668 ECB_MEMORY_FENCE_RELEASE;
1875 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2669 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1876 } 2670 }
1877 } 2671 }
1878#endif 2672#endif
1879} 2673}
1880 2674
1881/*****************************************************************************/ 2675/*****************************************************************************/
1882 2676
1883void 2677void
1884ev_feed_signal (int signum) 2678ev_feed_signal (int signum) EV_NOEXCEPT
1885{ 2679{
1886#if EV_MULTIPLICITY 2680#if EV_MULTIPLICITY
2681 EV_P;
2682 ECB_MEMORY_FENCE_ACQUIRE;
1887 EV_P = signals [signum - 1].loop; 2683 EV_A = signals [signum - 1].loop;
1888 2684
1889 if (!EV_A) 2685 if (!EV_A)
1890 return; 2686 return;
1891#endif 2687#endif
1892 2688
1893 if (!ev_active (&pipe_w))
1894 return;
1895
1896 signals [signum - 1].pending = 1; 2689 signals [signum - 1].pending = 1;
1897 evpipe_write (EV_A_ &sig_pending); 2690 evpipe_write (EV_A_ &sig_pending);
1898} 2691}
1899 2692
1900static void 2693static void
… …
1905#endif 2698#endif
1906 2699
1907 ev_feed_signal (signum); 2700 ev_feed_signal (signum);
1908} 2701}
1909 2702
1910void noinline 2703ecb_noinline
2704void
1911ev_feed_signal_event (EV_P_ int signum) 2705ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1912{ 2706{
1913 WL w; 2707 WL w;
1914 2708
1915 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2709 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
1916 return; 2710 return;
1917 2711
1918 --signum; 2712 --signum;
1919 2713
1920#if EV_MULTIPLICITY 2714#if EV_MULTIPLICITY
1921 /* it is permissible to try to feed a signal to the wrong loop */ 2715 /* it is permissible to try to feed a signal to the wrong loop */
1922 /* or, likely more useful, feeding a signal nobody is waiting for */ 2716 /* or, likely more useful, feeding a signal nobody is waiting for */
1923 2717
1924 if (expect_false (signals [signum].loop != EV_A)) 2718 if (ecb_expect_false (signals [signum].loop != EV_A))
1925 return; 2719 return;
1926#endif 2720#endif
1927 2721
1928 signals [signum].pending = 0; 2722 signals [signum].pending = 0;
2723 ECB_MEMORY_FENCE_RELEASE;
1929 2724
1930 for (w = signals [signum].head; w; w = w->next) 2725 for (w = signals [signum].head; w; w = w->next)
1931 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2726 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1932} 2727}
1933 2728
… …
2024# include "ev_kqueue.c" 2819# include "ev_kqueue.c"
2025#endif 2820#endif
2026#if EV_USE_EPOLL 2821#if EV_USE_EPOLL
2027# include "ev_epoll.c" 2822# include "ev_epoll.c"
2028#endif 2823#endif
2824#if EV_USE_LINUXAIO
2825# include "ev_linuxaio.c"
2826#endif
2827#if EV_USE_IOURING
2828# include "ev_iouring.c"
2829#endif
2029#if EV_USE_POLL 2830#if EV_USE_POLL
2030# include "ev_poll.c" 2831# include "ev_poll.c"
2031#endif 2832#endif
2032#if EV_USE_SELECT 2833#if EV_USE_SELECT
2033# include "ev_select.c" 2834# include "ev_select.c"
2034#endif 2835#endif
2035 2836
2036int ecb_cold 2837ecb_cold int
2037ev_version_major (void) 2838ev_version_major (void) EV_NOEXCEPT
2038{ 2839{
2039 return EV_VERSION_MAJOR; 2840 return EV_VERSION_MAJOR;
2040} 2841}
2041 2842
2042int ecb_cold 2843ecb_cold int
2043ev_version_minor (void) 2844ev_version_minor (void) EV_NOEXCEPT
2044{ 2845{
2045 return EV_VERSION_MINOR; 2846 return EV_VERSION_MINOR;
2046} 2847}
2047 2848
2048/* return true if we are running with elevated privileges and should ignore env variables */ 2849/* return true if we are running with elevated privileges and should ignore env variables */
2049int inline_size ecb_cold 2850inline_size ecb_cold int
2050enable_secure (void) 2851enable_secure (void)
2051{ 2852{
2052#ifdef _WIN32 2853#ifdef _WIN32
2053 return 0; 2854 return 0;
2054#else 2855#else
2055 return getuid () != geteuid () 2856 return getuid () != geteuid ()
2056 || getgid () != getegid (); 2857 || getgid () != getegid ();
2057#endif 2858#endif
2058} 2859}
2059 2860
2060unsigned int ecb_cold 2861ecb_cold
2862unsigned int
2061ev_supported_backends (void) 2863ev_supported_backends (void) EV_NOEXCEPT
2062{ 2864{
2063 unsigned int flags = 0; 2865 unsigned int flags = 0;
2064 2866
2065 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2867 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2066 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2868 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
2067 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2869 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2870 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
2871 if (EV_USE_IOURING ) flags |= EVBACKEND_IOURING;
2068 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2872 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
2069 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2873 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
2070 2874
2071 return flags; 2875 return flags;
2072} 2876}
2073 2877
2074unsigned int ecb_cold 2878ecb_cold
2879unsigned int
2075ev_recommended_backends (void) 2880ev_recommended_backends (void) EV_NOEXCEPT
2076{ 2881{
2077 unsigned int flags = ev_supported_backends (); 2882 unsigned int flags = ev_supported_backends ();
2078 2883
2079#ifndef __NetBSD__ 2884#ifndef __NetBSD__
2080 /* kqueue is borked on everything but netbsd apparently */ 2885 /* kqueue is borked on everything but netbsd apparently */
… …
2088#endif 2893#endif
2089#ifdef __FreeBSD__ 2894#ifdef __FreeBSD__
2090 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ 2895 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2091#endif 2896#endif
2092 2897
2898 /* TODO: linuxaio is very experimental */
2899#if !EV_RECOMMEND_LINUXAIO
2900 flags &= ~EVBACKEND_LINUXAIO;
2901#endif
2902 /* TODO: linuxaio is super experimental */
2903#if !EV_RECOMMEND_IOURING
2904 flags &= ~EVBACKEND_IOURING;
2905#endif
2906
2093 return flags; 2907 return flags;
2094} 2908}
2095 2909
2096unsigned int ecb_cold 2910ecb_cold
2911unsigned int
2097ev_embeddable_backends (void) 2912ev_embeddable_backends (void) EV_NOEXCEPT
2098{ 2913{
2099 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2914 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2100 2915
2101 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2916 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2102 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 2917 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
… …
2104 2919
2105 return flags; 2920 return flags;
2106} 2921}
2107 2922
2108unsigned int 2923unsigned int
2109ev_backend (EV_P) 2924ev_backend (EV_P) EV_NOEXCEPT
2110{ 2925{
2111 return backend; 2926 return backend;
2112} 2927}
2113 2928
2114#if EV_FEATURE_API 2929#if EV_FEATURE_API
2115unsigned int 2930unsigned int
2116ev_iteration (EV_P) 2931ev_iteration (EV_P) EV_NOEXCEPT
2117{ 2932{
2118 return loop_count; 2933 return loop_count;
2119} 2934}
2120 2935
2121unsigned int 2936unsigned int
2122ev_depth (EV_P) 2937ev_depth (EV_P) EV_NOEXCEPT
2123{ 2938{
2124 return loop_depth; 2939 return loop_depth;
2125} 2940}
2126 2941
2127void 2942void
2128ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2943ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2129{ 2944{
2130 io_blocktime = interval; 2945 io_blocktime = interval;
2131} 2946}
2132 2947
2133void 2948void
2134ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2949ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2135{ 2950{
2136 timeout_blocktime = interval; 2951 timeout_blocktime = interval;
2137} 2952}
2138 2953
2139void 2954void
2140ev_set_userdata (EV_P_ void *data) 2955ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2141{ 2956{
2142 userdata = data; 2957 userdata = data;
2143} 2958}
2144 2959
2145void * 2960void *
2146ev_userdata (EV_P) 2961ev_userdata (EV_P) EV_NOEXCEPT
2147{ 2962{
2148 return userdata; 2963 return userdata;
2149} 2964}
2150 2965
2151void 2966void
2152ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2967ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
2153{ 2968{
2154 invoke_cb = invoke_pending_cb; 2969 invoke_cb = invoke_pending_cb;
2155} 2970}
2156 2971
2157void 2972void
2158ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2973ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
2159{ 2974{
2160 release_cb = release; 2975 release_cb = release;
2161 acquire_cb = acquire; 2976 acquire_cb = acquire;
2162} 2977}
2163#endif 2978#endif
2164 2979
2165/* initialise a loop structure, must be zero-initialised */ 2980/* initialise a loop structure, must be zero-initialised */
2166static void noinline ecb_cold 2981ecb_noinline ecb_cold
2982static void
2167loop_init (EV_P_ unsigned int flags) 2983loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
2168{ 2984{
2169 if (!backend) 2985 if (!backend)
2170 { 2986 {
2171 origflags = flags; 2987 origflags = flags;
2172 2988
… …
2217#if EV_ASYNC_ENABLE 3033#if EV_ASYNC_ENABLE
2218 async_pending = 0; 3034 async_pending = 0;
2219#endif 3035#endif
2220 pipe_write_skipped = 0; 3036 pipe_write_skipped = 0;
2221 pipe_write_wanted = 0; 3037 pipe_write_wanted = 0;
3038 evpipe [0] = -1;
3039 evpipe [1] = -1;
2222#if EV_USE_INOTIFY 3040#if EV_USE_INOTIFY
2223 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3041 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2224#endif 3042#endif
2225#if EV_USE_SIGNALFD 3043#if EV_USE_SIGNALFD
2226 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 3044 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
… …
2228 3046
2229 if (!(flags & EVBACKEND_MASK)) 3047 if (!(flags & EVBACKEND_MASK))
2230 flags |= ev_recommended_backends (); 3048 flags |= ev_recommended_backends ();
2231 3049
2232#if EV_USE_IOCP 3050#if EV_USE_IOCP
2233 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 3051 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2234#endif 3052#endif
2235#if EV_USE_PORT 3053#if EV_USE_PORT
2236 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3054 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
2237#endif 3055#endif
2238#if EV_USE_KQUEUE 3056#if EV_USE_KQUEUE
2239 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 3057 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
3058#endif
3059#if EV_USE_IOURING
3060 if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
3061#endif
3062#if EV_USE_LINUXAIO
3063 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
2240#endif 3064#endif
2241#if EV_USE_EPOLL 3065#if EV_USE_EPOLL
2242 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3066 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
2243#endif 3067#endif
2244#if EV_USE_POLL 3068#if EV_USE_POLL
2245 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3069 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
2246#endif 3070#endif
2247#if EV_USE_SELECT 3071#if EV_USE_SELECT
2248 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3072 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
2249#endif 3073#endif
2250 3074
2251 ev_prepare_init (&pending_w, pendingcb); 3075 ev_prepare_init (&pending_w, pendingcb);
2252 3076
2253#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3077#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
2256#endif 3080#endif
2257 } 3081 }
2258} 3082}
2259 3083
2260/* free up a loop structure */ 3084/* free up a loop structure */
2261void ecb_cold 3085ecb_cold
3086void
2262ev_loop_destroy (EV_P) 3087ev_loop_destroy (EV_P)
2263{ 3088{
2264 int i; 3089 int i;
2265 3090
2266#if EV_MULTIPLICITY 3091#if EV_MULTIPLICITY
… …
2269 return; 3094 return;
2270#endif 3095#endif
2271 3096
2272#if EV_CLEANUP_ENABLE 3097#if EV_CLEANUP_ENABLE
2273 /* queue cleanup watchers (and execute them) */ 3098 /* queue cleanup watchers (and execute them) */
2274 if (expect_false (cleanupcnt)) 3099 if (ecb_expect_false (cleanupcnt))
2275 { 3100 {
2276 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); 3101 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2277 EV_INVOKE_PENDING; 3102 EV_INVOKE_PENDING;
2278 } 3103 }
2279#endif 3104#endif
2280 3105
2281#if EV_CHILD_ENABLE 3106#if EV_CHILD_ENABLE
2282 if (ev_is_active (&childev)) 3107 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2283 { 3108 {
2284 ev_ref (EV_A); /* child watcher */ 3109 ev_ref (EV_A); /* child watcher */
2285 ev_signal_stop (EV_A_ &childev); 3110 ev_signal_stop (EV_A_ &childev);
2286 } 3111 }
2287#endif 3112#endif
… …
2289 if (ev_is_active (&pipe_w)) 3114 if (ev_is_active (&pipe_w))
2290 { 3115 {
2291 /*ev_ref (EV_A);*/ 3116 /*ev_ref (EV_A);*/
2292 /*ev_io_stop (EV_A_ &pipe_w);*/ 3117 /*ev_io_stop (EV_A_ &pipe_w);*/
2293 3118
2294#if EV_USE_EVENTFD
2295 if (evfd >= 0)
2296 close (evfd);
2297#endif
2298
2299 if (evpipe [0] >= 0)
2300 {
2301 EV_WIN32_CLOSE_FD (evpipe [0]); 3119 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2302 EV_WIN32_CLOSE_FD (evpipe [1]); 3120 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2303 }
2304 } 3121 }
2305 3122
2306#if EV_USE_SIGNALFD 3123#if EV_USE_SIGNALFD
2307 if (ev_is_active (&sigfd_w)) 3124 if (ev_is_active (&sigfd_w))
2308 close (sigfd); 3125 close (sigfd);
… …
2315 3132
2316 if (backend_fd >= 0) 3133 if (backend_fd >= 0)
2317 close (backend_fd); 3134 close (backend_fd);
2318 3135
2319#if EV_USE_IOCP 3136#if EV_USE_IOCP
2320 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3137 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2321#endif 3138#endif
2322#if EV_USE_PORT 3139#if EV_USE_PORT
2323 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3140 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
2324#endif 3141#endif
2325#if EV_USE_KQUEUE 3142#if EV_USE_KQUEUE
2326 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3143 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3144#endif
3145#if EV_USE_IOURING
3146 if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
3147#endif
3148#if EV_USE_LINUXAIO
3149 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
2327#endif 3150#endif
2328#if EV_USE_EPOLL 3151#if EV_USE_EPOLL
2329 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3152 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
2330#endif 3153#endif
2331#if EV_USE_POLL 3154#if EV_USE_POLL
2332 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3155 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
2333#endif 3156#endif
2334#if EV_USE_SELECT 3157#if EV_USE_SELECT
2335 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3158 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
2336#endif 3159#endif
2337 3160
2338 for (i = NUMPRI; i--; ) 3161 for (i = NUMPRI; i--; )
2339 { 3162 {
2340 array_free (pending, [i]); 3163 array_free (pending, [i]);
… …
2382 3205
2383inline_size void 3206inline_size void
2384loop_fork (EV_P) 3207loop_fork (EV_P)
2385{ 3208{
2386#if EV_USE_PORT 3209#if EV_USE_PORT
2387 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3210 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
2388#endif 3211#endif
2389#if EV_USE_KQUEUE 3212#if EV_USE_KQUEUE
2390 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3213 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3214#endif
3215#if EV_USE_IOURING
3216 if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
3217#endif
3218#if EV_USE_LINUXAIO
3219 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
2391#endif 3220#endif
2392#if EV_USE_EPOLL 3221#if EV_USE_EPOLL
2393 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3222 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
2394#endif 3223#endif
2395#if EV_USE_INOTIFY 3224#if EV_USE_INOTIFY
2396 infy_fork (EV_A); 3225 infy_fork (EV_A);
2397#endif 3226#endif
2398 3227
3228#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2399 if (ev_is_active (&pipe_w)) 3229 if (ev_is_active (&pipe_w) && postfork != 2)
2400 { 3230 {
2401 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 3231 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2402 3232
2403 ev_ref (EV_A); 3233 ev_ref (EV_A);
2404 ev_io_stop (EV_A_ &pipe_w); 3234 ev_io_stop (EV_A_ &pipe_w);
2405 3235
2406#if EV_USE_EVENTFD
2407 if (evfd >= 0)
2408 close (evfd);
2409#endif
2410
2411 if (evpipe [0] >= 0) 3236 if (evpipe [0] >= 0)
2412 {
2413 EV_WIN32_CLOSE_FD (evpipe [0]); 3237 EV_WIN32_CLOSE_FD (evpipe [0]);
2414 EV_WIN32_CLOSE_FD (evpipe [1]);
2415 }
2416 3238
2417#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2418 evpipe_init (EV_A); 3239 evpipe_init (EV_A);
2419 /* now iterate over everything, in case we missed something */ 3240 /* iterate over everything, in case we missed something before */
2420 pipecb (EV_A_ &pipe_w, EV_READ); 3241 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2421#endif
2422 } 3242 }
3243#endif
2423 3244
2424 postfork = 0; 3245 postfork = 0;
2425} 3246}
2426 3247
2427#if EV_MULTIPLICITY 3248#if EV_MULTIPLICITY
2428 3249
3250ecb_cold
2429struct ev_loop * ecb_cold 3251struct ev_loop *
2430ev_loop_new (unsigned int flags) 3252ev_loop_new (unsigned int flags) EV_NOEXCEPT
2431{ 3253{
2432 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3254 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2433 3255
2434 memset (EV_A, 0, sizeof (struct ev_loop)); 3256 memset (EV_A, 0, sizeof (struct ev_loop));
2435 loop_init (EV_A_ flags); 3257 loop_init (EV_A_ flags);
… …
2442} 3264}
2443 3265
2444#endif /* multiplicity */ 3266#endif /* multiplicity */
2445 3267
2446#if EV_VERIFY 3268#if EV_VERIFY
2447static void noinline ecb_cold 3269ecb_noinline ecb_cold
3270static void
2448verify_watcher (EV_P_ W w) 3271verify_watcher (EV_P_ W w)
2449{ 3272{
2450 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3273 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2451 3274
2452 if (w->pending) 3275 if (w->pending)
2453 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3276 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2454} 3277}
2455 3278
2456static void noinline ecb_cold 3279ecb_noinline ecb_cold
3280static void
2457verify_heap (EV_P_ ANHE *heap, int N) 3281verify_heap (EV_P_ ANHE *heap, int N)
2458{ 3282{
2459 int i; 3283 int i;
2460 3284
2461 for (i = HEAP0; i < N + HEAP0; ++i) 3285 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2466 3290
2467 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3291 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2468 } 3292 }
2469} 3293}
2470 3294
2471static void noinline ecb_cold 3295ecb_noinline ecb_cold
3296static void
2472array_verify (EV_P_ W *ws, int cnt) 3297array_verify (EV_P_ W *ws, int cnt)
2473{ 3298{
2474 while (cnt--) 3299 while (cnt--)
2475 { 3300 {
2476 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3301 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2479} 3304}
2480#endif 3305#endif
2481 3306
2482#if EV_FEATURE_API 3307#if EV_FEATURE_API
2483void ecb_cold 3308void ecb_cold
2484ev_verify (EV_P) 3309ev_verify (EV_P) EV_NOEXCEPT
2485{ 3310{
2486#if EV_VERIFY 3311#if EV_VERIFY
2487 int i; 3312 int i;
2488 WL w; 3313 WL w, w2;
2489 3314
2490 assert (activecnt >= -1); 3315 assert (activecnt >= -1);
2491 3316
2492 assert (fdchangemax >= fdchangecnt); 3317 assert (fdchangemax >= fdchangecnt);
2493 for (i = 0; i < fdchangecnt; ++i) 3318 for (i = 0; i < fdchangecnt; ++i)
2494 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3319 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2495 3320
2496 assert (anfdmax >= 0); 3321 assert (anfdmax >= 0);
2497 for (i = 0; i < anfdmax; ++i) 3322 for (i = 0; i < anfdmax; ++i)
3323 {
3324 int j = 0;
3325
2498 for (w = anfds [i].head; w; w = w->next) 3326 for (w = w2 = anfds [i].head; w; w = w->next)
2499 { 3327 {
2500 verify_watcher (EV_A_ (W)w); 3328 verify_watcher (EV_A_ (W)w);
3329
3330 if (j++ & 1)
3331 {
3332 assert (("libev: io watcher list contains a loop", w != w2));
3333 w2 = w2->next;
3334 }
3335
2501 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3336 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2502 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3337 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2503 } 3338 }
3339 }
2504 3340
2505 assert (timermax >= timercnt); 3341 assert (timermax >= timercnt);
2506 verify_heap (EV_A_ timers, timercnt); 3342 verify_heap (EV_A_ timers, timercnt);
2507 3343
2508#if EV_PERIODIC_ENABLE 3344#if EV_PERIODIC_ENABLE
… …
2554#endif 3390#endif
2555} 3391}
2556#endif 3392#endif
2557 3393
2558#if EV_MULTIPLICITY 3394#if EV_MULTIPLICITY
3395ecb_cold
2559struct ev_loop * ecb_cold 3396struct ev_loop *
2560#else 3397#else
2561int 3398int
2562#endif 3399#endif
2563ev_default_loop (unsigned int flags) 3400ev_default_loop (unsigned int flags) EV_NOEXCEPT
2564{ 3401{
2565 if (!ev_default_loop_ptr) 3402 if (!ev_default_loop_ptr)
2566 { 3403 {
2567#if EV_MULTIPLICITY 3404#if EV_MULTIPLICITY
2568 EV_P = ev_default_loop_ptr = &default_loop_struct; 3405 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2587 3424
2588 return ev_default_loop_ptr; 3425 return ev_default_loop_ptr;
2589} 3426}
2590 3427
2591void 3428void
2592ev_loop_fork (EV_P) 3429ev_loop_fork (EV_P) EV_NOEXCEPT
2593{ 3430{
2594 postfork = 1; /* must be in line with ev_default_fork */ 3431 postfork = 1;
2595} 3432}
2596 3433
2597/*****************************************************************************/ 3434/*****************************************************************************/
2598 3435
2599void 3436void
… …
2601{ 3438{
2602 EV_CB_INVOKE ((W)w, revents); 3439 EV_CB_INVOKE ((W)w, revents);
2603} 3440}
2604 3441
2605unsigned int 3442unsigned int
2606ev_pending_count (EV_P) 3443ev_pending_count (EV_P) EV_NOEXCEPT
2607{ 3444{
2608 int pri; 3445 int pri;
2609 unsigned int count = 0; 3446 unsigned int count = 0;
2610 3447
2611 for (pri = NUMPRI; pri--; ) 3448 for (pri = NUMPRI; pri--; )
2612 count += pendingcnt [pri]; 3449 count += pendingcnt [pri];
2613 3450
2614 return count; 3451 return count;
2615} 3452}
2616 3453
2617void noinline 3454ecb_noinline
3455void
2618ev_invoke_pending (EV_P) 3456ev_invoke_pending (EV_P)
2619{ 3457{
2620 int pri; 3458 pendingpri = NUMPRI;
2621 3459
2622 for (pri = NUMPRI; pri--; ) 3460 do
3461 {
3462 --pendingpri;
3463
3464 /* pendingpri possibly gets modified in the inner loop */
2623 while (pendingcnt [pri]) 3465 while (pendingcnt [pendingpri])
2624 { 3466 {
2625 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3467 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2626 3468
2627 p->w->pending = 0; 3469 p->w->pending = 0;
2628 EV_CB_INVOKE (p->w, p->events); 3470 EV_CB_INVOKE (p->w, p->events);
2629 EV_FREQUENT_CHECK; 3471 EV_FREQUENT_CHECK;
2630 } 3472 }
3473 }
3474 while (pendingpri);
2631} 3475}
2632 3476
2633#if EV_IDLE_ENABLE 3477#if EV_IDLE_ENABLE
2634/* make idle watchers pending. this handles the "call-idle */ 3478/* make idle watchers pending. this handles the "call-idle */
2635/* only when higher priorities are idle" logic */ 3479/* only when higher priorities are idle" logic */
2636inline_size void 3480inline_size void
2637idle_reify (EV_P) 3481idle_reify (EV_P)
2638{ 3482{
2639 if (expect_false (idleall)) 3483 if (ecb_expect_false (idleall))
2640 { 3484 {
2641 int pri; 3485 int pri;
2642 3486
2643 for (pri = NUMPRI; pri--; ) 3487 for (pri = NUMPRI; pri--; )
2644 { 3488 {
… …
2693 } 3537 }
2694} 3538}
2695 3539
2696#if EV_PERIODIC_ENABLE 3540#if EV_PERIODIC_ENABLE
2697 3541
2698static void noinline 3542ecb_noinline
3543static void
2699periodic_recalc (EV_P_ ev_periodic *w) 3544periodic_recalc (EV_P_ ev_periodic *w)
2700{ 3545{
2701 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3546 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2702 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); 3547 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2703 3548
… …
2705 while (at <= ev_rt_now) 3550 while (at <= ev_rt_now)
2706 { 3551 {
2707 ev_tstamp nat = at + w->interval; 3552 ev_tstamp nat = at + w->interval;
2708 3553
2709 /* when resolution fails us, we use ev_rt_now */ 3554 /* when resolution fails us, we use ev_rt_now */
2710 if (expect_false (nat == at)) 3555 if (ecb_expect_false (nat == at))
2711 { 3556 {
2712 at = ev_rt_now; 3557 at = ev_rt_now;
2713 break; 3558 break;
2714 } 3559 }
2715 3560
… …
2725{ 3570{
2726 EV_FREQUENT_CHECK; 3571 EV_FREQUENT_CHECK;
2727 3572
2728 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3573 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2729 { 3574 {
2730 int feed_count = 0;
2731
2732 do 3575 do
2733 { 3576 {
2734 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3577 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2735 3578
2736 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3579 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2763 } 3606 }
2764} 3607}
2765 3608
2766/* simply recalculate all periodics */ 3609/* simply recalculate all periodics */
2767/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3610/* TODO: maybe ensure that at least one event happens when jumping forward? */
2768static void noinline ecb_cold 3611ecb_noinline ecb_cold
3612static void
2769periodics_reschedule (EV_P) 3613periodics_reschedule (EV_P)
2770{ 3614{
2771 int i; 3615 int i;
2772 3616
2773 /* adjust periodics after time jump */ 3617 /* adjust periodics after time jump */
… …
2786 reheap (periodics, periodiccnt); 3630 reheap (periodics, periodiccnt);
2787} 3631}
2788#endif 3632#endif
2789 3633
2790/* adjust all timers by a given offset */ 3634/* adjust all timers by a given offset */
2791static void noinline ecb_cold 3635ecb_noinline ecb_cold
3636static void
2792timers_reschedule (EV_P_ ev_tstamp adjust) 3637timers_reschedule (EV_P_ ev_tstamp adjust)
2793{ 3638{
2794 int i; 3639 int i;
2795 3640
2796 for (i = 0; i < timercnt; ++i) 3641 for (i = 0; i < timercnt; ++i)
… …
2805/* also detect if there was a timejump, and act accordingly */ 3650/* also detect if there was a timejump, and act accordingly */
2806inline_speed void 3651inline_speed void
2807time_update (EV_P_ ev_tstamp max_block) 3652time_update (EV_P_ ev_tstamp max_block)
2808{ 3653{
2809#if EV_USE_MONOTONIC 3654#if EV_USE_MONOTONIC
2810 if (expect_true (have_monotonic)) 3655 if (ecb_expect_true (have_monotonic))
2811 { 3656 {
2812 int i; 3657 int i;
2813 ev_tstamp odiff = rtmn_diff; 3658 ev_tstamp odiff = rtmn_diff;
2814 3659
2815 mn_now = get_clock (); 3660 mn_now = get_clock ();
2816 3661
2817 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3662 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2818 /* interpolate in the meantime */ 3663 /* interpolate in the meantime */
2819 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3664 if (ecb_expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
2820 { 3665 {
2821 ev_rt_now = rtmn_diff + mn_now; 3666 ev_rt_now = rtmn_diff + mn_now;
2822 return; 3667 return;
2823 } 3668 }
2824 3669
… …
2838 ev_tstamp diff; 3683 ev_tstamp diff;
2839 rtmn_diff = ev_rt_now - mn_now; 3684 rtmn_diff = ev_rt_now - mn_now;
2840 3685
2841 diff = odiff - rtmn_diff; 3686 diff = odiff - rtmn_diff;
2842 3687
2843 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP)) 3688 if (ecb_expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2844 return; /* all is well */ 3689 return; /* all is well */
2845 3690
2846 ev_rt_now = ev_time (); 3691 ev_rt_now = ev_time ();
2847 mn_now = get_clock (); 3692 mn_now = get_clock ();
2848 now_floor = mn_now; 3693 now_floor = mn_now;
… …
2857 else 3702 else
2858#endif 3703#endif
2859 { 3704 {
2860 ev_rt_now = ev_time (); 3705 ev_rt_now = ev_time ();
2861 3706
2862 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 3707 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
2863 { 3708 {
2864 /* adjust timers. this is easy, as the offset is the same for all of them */ 3709 /* adjust timers. this is easy, as the offset is the same for all of them */
2865 timers_reschedule (EV_A_ ev_rt_now - mn_now); 3710 timers_reschedule (EV_A_ ev_rt_now - mn_now);
2866#if EV_PERIODIC_ENABLE 3711#if EV_PERIODIC_ENABLE
2867 periodics_reschedule (EV_A); 3712 periodics_reschedule (EV_A);
… …
2870 3715
2871 mn_now = ev_rt_now; 3716 mn_now = ev_rt_now;
2872 } 3717 }
2873} 3718}
2874 3719
2875void 3720int
2876ev_run (EV_P_ int flags) 3721ev_run (EV_P_ int flags)
2877{ 3722{
2878#if EV_FEATURE_API 3723#if EV_FEATURE_API
2879 ++loop_depth; 3724 ++loop_depth;
2880#endif 3725#endif
… …
2890#if EV_VERIFY >= 2 3735#if EV_VERIFY >= 2
2891 ev_verify (EV_A); 3736 ev_verify (EV_A);
2892#endif 3737#endif
2893 3738
2894#ifndef _WIN32 3739#ifndef _WIN32
2895 if (expect_false (curpid)) /* penalise the forking check even more */ 3740 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
2896 if (expect_false (getpid () != curpid)) 3741 if (ecb_expect_false (getpid () != curpid))
2897 { 3742 {
2898 curpid = getpid (); 3743 curpid = getpid ();
2899 postfork = 1; 3744 postfork = 1;
2900 } 3745 }
2901#endif 3746#endif
2902 3747
2903#if EV_FORK_ENABLE 3748#if EV_FORK_ENABLE
2904 /* we might have forked, so queue fork handlers */ 3749 /* we might have forked, so queue fork handlers */
2905 if (expect_false (postfork)) 3750 if (ecb_expect_false (postfork))
2906 if (forkcnt) 3751 if (forkcnt)
2907 { 3752 {
2908 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3753 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2909 EV_INVOKE_PENDING; 3754 EV_INVOKE_PENDING;
2910 } 3755 }
2911#endif 3756#endif
2912 3757
2913#if EV_PREPARE_ENABLE 3758#if EV_PREPARE_ENABLE
2914 /* queue prepare watchers (and execute them) */ 3759 /* queue prepare watchers (and execute them) */
2915 if (expect_false (preparecnt)) 3760 if (ecb_expect_false (preparecnt))
2916 { 3761 {
2917 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3762 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2918 EV_INVOKE_PENDING; 3763 EV_INVOKE_PENDING;
2919 } 3764 }
2920#endif 3765#endif
2921 3766
2922 if (expect_false (loop_done)) 3767 if (ecb_expect_false (loop_done))
2923 break; 3768 break;
2924 3769
2925 /* we might have forked, so reify kernel state if necessary */ 3770 /* we might have forked, so reify kernel state if necessary */
2926 if (expect_false (postfork)) 3771 if (ecb_expect_false (postfork))
2927 loop_fork (EV_A); 3772 loop_fork (EV_A);
2928 3773
2929 /* update fd-related kernel structures */ 3774 /* update fd-related kernel structures */
2930 fd_reify (EV_A); 3775 fd_reify (EV_A);
2931 3776
… …
2943 /* from now on, we want a pipe-wake-up */ 3788 /* from now on, we want a pipe-wake-up */
2944 pipe_write_wanted = 1; 3789 pipe_write_wanted = 1;
2945 3790
2946 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */ 3791 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
2947 3792
2948 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) 3793 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2949 { 3794 {
2950 waittime = MAX_BLOCKTIME; 3795 waittime = MAX_BLOCKTIME;
2951 3796
2952 if (timercnt) 3797 if (timercnt)
2953 { 3798 {
… …
2962 if (waittime > to) waittime = to; 3807 if (waittime > to) waittime = to;
2963 } 3808 }
2964#endif 3809#endif
2965 3810
2966 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3811 /* don't let timeouts decrease the waittime below timeout_blocktime */
2967 if (expect_false (waittime < timeout_blocktime)) 3812 if (ecb_expect_false (waittime < timeout_blocktime))
2968 waittime = timeout_blocktime; 3813 waittime = timeout_blocktime;
2969 3814
2970 /* at this point, we NEED to wait, so we have to ensure */ 3815 /* at this point, we NEED to wait, so we have to ensure */
2971 /* to pass a minimum nonzero value to the backend */ 3816 /* to pass a minimum nonzero value to the backend */
2972 if (expect_false (waittime < backend_mintime)) 3817 if (ecb_expect_false (waittime < backend_mintime))
2973 waittime = backend_mintime; 3818 waittime = backend_mintime;
2974 3819
2975 /* extra check because io_blocktime is commonly 0 */ 3820 /* extra check because io_blocktime is commonly 0 */
2976 if (expect_false (io_blocktime)) 3821 if (ecb_expect_false (io_blocktime))
2977 { 3822 {
2978 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3823 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2979 3824
2980 if (sleeptime > waittime - backend_mintime) 3825 if (sleeptime > waittime - backend_mintime)
2981 sleeptime = waittime - backend_mintime; 3826 sleeptime = waittime - backend_mintime;
2982 3827
2983 if (expect_true (sleeptime > 0.)) 3828 if (ecb_expect_true (sleeptime > 0.))
2984 { 3829 {
2985 ev_sleep (sleeptime); 3830 ev_sleep (sleeptime);
2986 waittime -= sleeptime; 3831 waittime -= sleeptime;
2987 } 3832 }
2988 } 3833 }
… …
2993#endif 3838#endif
2994 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ 3839 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2995 backend_poll (EV_A_ waittime); 3840 backend_poll (EV_A_ waittime);
2996 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3841 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2997 3842
2998 pipe_write_wanted = 0; /* just an optimsiation, no fence needed */ 3843 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
2999 3844
3845 ECB_MEMORY_FENCE_ACQUIRE;
3000 if (pipe_write_skipped) 3846 if (pipe_write_skipped)
3001 { 3847 {
3002 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 3848 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3003 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3849 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3004 } 3850 }
3005 3851
3006
3007 /* update ev_rt_now, do magic */ 3852 /* update ev_rt_now, do magic */
3008 time_update (EV_A_ waittime + sleeptime); 3853 time_update (EV_A_ waittime + sleeptime);
3009 } 3854 }
3010 3855
3011 /* queue pending timers and reschedule them */ 3856 /* queue pending timers and reschedule them */
… …
3019 idle_reify (EV_A); 3864 idle_reify (EV_A);
3020#endif 3865#endif
3021 3866
3022#if EV_CHECK_ENABLE 3867#if EV_CHECK_ENABLE
3023 /* queue check watchers, to be executed first */ 3868 /* queue check watchers, to be executed first */
3024 if (expect_false (checkcnt)) 3869 if (ecb_expect_false (checkcnt))
3025 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3870 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3026#endif 3871#endif
3027 3872
3028 EV_INVOKE_PENDING; 3873 EV_INVOKE_PENDING;
3029 } 3874 }
3030 while (expect_true ( 3875 while (ecb_expect_true (
3031 activecnt 3876 activecnt
3032 && !loop_done 3877 && !loop_done
3033 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) 3878 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
3034 )); 3879 ));
3035 3880
… …
3037 loop_done = EVBREAK_CANCEL; 3882 loop_done = EVBREAK_CANCEL;
3038 3883
3039#if EV_FEATURE_API 3884#if EV_FEATURE_API
3040 --loop_depth; 3885 --loop_depth;
3041#endif 3886#endif
3042}
3043 3887
3888 return activecnt;
3889}
3890
3044void 3891void
3045ev_break (EV_P_ int how) 3892ev_break (EV_P_ int how) EV_NOEXCEPT
3046{ 3893{
3047 loop_done = how; 3894 loop_done = how;
3048} 3895}
3049 3896
3050void 3897void
3051ev_ref (EV_P) 3898ev_ref (EV_P) EV_NOEXCEPT
3052{ 3899{
3053 ++activecnt; 3900 ++activecnt;
3054} 3901}
3055 3902
3056void 3903void
3057ev_unref (EV_P) 3904ev_unref (EV_P) EV_NOEXCEPT
3058{ 3905{
3059 --activecnt; 3906 --activecnt;
3060} 3907}
3061 3908
3062void 3909void
3063ev_now_update (EV_P) 3910ev_now_update (EV_P) EV_NOEXCEPT
3064{ 3911{
3065 time_update (EV_A_ 1e100); 3912 time_update (EV_A_ 1e100);
3066} 3913}
3067 3914
3068void 3915void
3069ev_suspend (EV_P) 3916ev_suspend (EV_P) EV_NOEXCEPT
3070{ 3917{
3071 ev_now_update (EV_A); 3918 ev_now_update (EV_A);
3072} 3919}
3073 3920
3074void 3921void
3075ev_resume (EV_P) 3922ev_resume (EV_P) EV_NOEXCEPT
3076{ 3923{
3077 ev_tstamp mn_prev = mn_now; 3924 ev_tstamp mn_prev = mn_now;
3078 3925
3079 ev_now_update (EV_A); 3926 ev_now_update (EV_A);
3080 timers_reschedule (EV_A_ mn_now - mn_prev); 3927 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
3097inline_size void 3944inline_size void
3098wlist_del (WL *head, WL elem) 3945wlist_del (WL *head, WL elem)
3099{ 3946{
3100 while (*head) 3947 while (*head)
3101 { 3948 {
3102 if (expect_true (*head == elem)) 3949 if (ecb_expect_true (*head == elem))
3103 { 3950 {
3104 *head = elem->next; 3951 *head = elem->next;
3105 break; 3952 break;
3106 } 3953 }
3107 3954
… …
3119 w->pending = 0; 3966 w->pending = 0;
3120 } 3967 }
3121} 3968}
3122 3969
3123int 3970int
3124ev_clear_pending (EV_P_ void *w) 3971ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
3125{ 3972{
3126 W w_ = (W)w; 3973 W w_ = (W)w;
3127 int pending = w_->pending; 3974 int pending = w_->pending;
3128 3975
3129 if (expect_true (pending)) 3976 if (ecb_expect_true (pending))
3130 { 3977 {
3131 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 3978 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3132 p->w = (W)&pending_w; 3979 p->w = (W)&pending_w;
3133 w_->pending = 0; 3980 w_->pending = 0;
3134 return p->events; 3981 return p->events;
… …
3161 w->active = 0; 4008 w->active = 0;
3162} 4009}
3163 4010
3164/*****************************************************************************/ 4011/*****************************************************************************/
3165 4012
3166void noinline 4013ecb_noinline
4014void
3167ev_io_start (EV_P_ ev_io *w) 4015ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
3168{ 4016{
3169 int fd = w->fd; 4017 int fd = w->fd;
3170 4018
3171 if (expect_false (ev_is_active (w))) 4019 if (ecb_expect_false (ev_is_active (w)))
3172 return; 4020 return;
3173 4021
3174 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4022 assert (("libev: ev_io_start called with negative fd", fd >= 0));
3175 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 4023 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
3176 4024
4025#if EV_VERIFY >= 2
4026 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4027#endif
3177 EV_FREQUENT_CHECK; 4028 EV_FREQUENT_CHECK;
3178 4029
3179 ev_start (EV_A_ (W)w, 1); 4030 ev_start (EV_A_ (W)w, 1);
3180 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4031 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
3181 wlist_add (&anfds[fd].head, (WL)w); 4032 wlist_add (&anfds[fd].head, (WL)w);
4033
4034 /* common bug, apparently */
4035 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3182 4036
3183 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 4037 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
3184 w->events &= ~EV__IOFDSET; 4038 w->events &= ~EV__IOFDSET;
3185 4039
3186 EV_FREQUENT_CHECK; 4040 EV_FREQUENT_CHECK;
3187} 4041}
3188 4042
3189void noinline 4043ecb_noinline
4044void
3190ev_io_stop (EV_P_ ev_io *w) 4045ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
3191{ 4046{
3192 clear_pending (EV_A_ (W)w); 4047 clear_pending (EV_A_ (W)w);
3193 if (expect_false (!ev_is_active (w))) 4048 if (ecb_expect_false (!ev_is_active (w)))
3194 return; 4049 return;
3195 4050
3196 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4051 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
3197 4052
4053#if EV_VERIFY >= 2
4054 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4055#endif
3198 EV_FREQUENT_CHECK; 4056 EV_FREQUENT_CHECK;
3199 4057
3200 wlist_del (&anfds[w->fd].head, (WL)w); 4058 wlist_del (&anfds[w->fd].head, (WL)w);
3201 ev_stop (EV_A_ (W)w); 4059 ev_stop (EV_A_ (W)w);
3202 4060
3203 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 4061 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3204 4062
3205 EV_FREQUENT_CHECK; 4063 EV_FREQUENT_CHECK;
3206} 4064}
3207 4065
3208void noinline 4066ecb_noinline
4067void
3209ev_timer_start (EV_P_ ev_timer *w) 4068ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
3210{ 4069{
3211 if (expect_false (ev_is_active (w))) 4070 if (ecb_expect_false (ev_is_active (w)))
3212 return; 4071 return;
3213 4072
3214 ev_at (w) += mn_now; 4073 ev_at (w) += mn_now;
3215 4074
3216 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4075 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
3217 4076
3218 EV_FREQUENT_CHECK; 4077 EV_FREQUENT_CHECK;
3219 4078
3220 ++timercnt; 4079 ++timercnt;
3221 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4080 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
3222 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4081 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
3223 ANHE_w (timers [ev_active (w)]) = (WT)w; 4082 ANHE_w (timers [ev_active (w)]) = (WT)w;
3224 ANHE_at_cache (timers [ev_active (w)]); 4083 ANHE_at_cache (timers [ev_active (w)]);
3225 upheap (timers, ev_active (w)); 4084 upheap (timers, ev_active (w));
3226 4085
3227 EV_FREQUENT_CHECK; 4086 EV_FREQUENT_CHECK;
3228 4087
3229 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4088 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
3230} 4089}
3231 4090
3232void noinline 4091ecb_noinline
4092void
3233ev_timer_stop (EV_P_ ev_timer *w) 4093ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
3234{ 4094{
3235 clear_pending (EV_A_ (W)w); 4095 clear_pending (EV_A_ (W)w);
3236 if (expect_false (!ev_is_active (w))) 4096 if (ecb_expect_false (!ev_is_active (w)))
3237 return; 4097 return;
3238 4098
3239 EV_FREQUENT_CHECK; 4099 EV_FREQUENT_CHECK;
3240 4100
3241 { 4101 {
… …
3243 4103
3244 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4104 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
3245 4105
3246 --timercnt; 4106 --timercnt;
3247 4107
3248 if (expect_true (active < timercnt + HEAP0)) 4108 if (ecb_expect_true (active < timercnt + HEAP0))
3249 { 4109 {
3250 timers [active] = timers [timercnt + HEAP0]; 4110 timers [active] = timers [timercnt + HEAP0];
3251 adjustheap (timers, timercnt, active); 4111 adjustheap (timers, timercnt, active);
3252 } 4112 }
3253 } 4113 }
… …
3257 ev_stop (EV_A_ (W)w); 4117 ev_stop (EV_A_ (W)w);
3258 4118
3259 EV_FREQUENT_CHECK; 4119 EV_FREQUENT_CHECK;
3260} 4120}
3261 4121
3262void noinline 4122ecb_noinline
4123void
3263ev_timer_again (EV_P_ ev_timer *w) 4124ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
3264{ 4125{
3265 EV_FREQUENT_CHECK; 4126 EV_FREQUENT_CHECK;
4127
4128 clear_pending (EV_A_ (W)w);
3266 4129
3267 if (ev_is_active (w)) 4130 if (ev_is_active (w))
3268 { 4131 {
3269 if (w->repeat) 4132 if (w->repeat)
3270 { 4133 {
… …
3283 4146
3284 EV_FREQUENT_CHECK; 4147 EV_FREQUENT_CHECK;
3285} 4148}
3286 4149
3287ev_tstamp 4150ev_tstamp
3288ev_timer_remaining (EV_P_ ev_timer *w) 4151ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
3289{ 4152{
3290 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4153 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3291} 4154}
3292 4155
3293#if EV_PERIODIC_ENABLE 4156#if EV_PERIODIC_ENABLE
3294void noinline 4157ecb_noinline
4158void
3295ev_periodic_start (EV_P_ ev_periodic *w) 4159ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
3296{ 4160{
3297 if (expect_false (ev_is_active (w))) 4161 if (ecb_expect_false (ev_is_active (w)))
3298 return; 4162 return;
3299 4163
3300 if (w->reschedule_cb) 4164 if (w->reschedule_cb)
3301 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4165 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
3302 else if (w->interval) 4166 else if (w->interval)
… …
3309 4173
3310 EV_FREQUENT_CHECK; 4174 EV_FREQUENT_CHECK;
3311 4175
3312 ++periodiccnt; 4176 ++periodiccnt;
3313 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4177 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
3314 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4178 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
3315 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4179 ANHE_w (periodics [ev_active (w)]) = (WT)w;
3316 ANHE_at_cache (periodics [ev_active (w)]); 4180 ANHE_at_cache (periodics [ev_active (w)]);
3317 upheap (periodics, ev_active (w)); 4181 upheap (periodics, ev_active (w));
3318 4182
3319 EV_FREQUENT_CHECK; 4183 EV_FREQUENT_CHECK;
3320 4184
3321 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4185 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
3322} 4186}
3323 4187
3324void noinline 4188ecb_noinline
4189void
3325ev_periodic_stop (EV_P_ ev_periodic *w) 4190ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
3326{ 4191{
3327 clear_pending (EV_A_ (W)w); 4192 clear_pending (EV_A_ (W)w);
3328 if (expect_false (!ev_is_active (w))) 4193 if (ecb_expect_false (!ev_is_active (w)))
3329 return; 4194 return;
3330 4195
3331 EV_FREQUENT_CHECK; 4196 EV_FREQUENT_CHECK;
3332 4197
3333 { 4198 {
… …
3335 4200
3336 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4201 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
3337 4202
3338 --periodiccnt; 4203 --periodiccnt;
3339 4204
3340 if (expect_true (active < periodiccnt + HEAP0)) 4205 if (ecb_expect_true (active < periodiccnt + HEAP0))
3341 { 4206 {
3342 periodics [active] = periodics [periodiccnt + HEAP0]; 4207 periodics [active] = periodics [periodiccnt + HEAP0];
3343 adjustheap (periodics, periodiccnt, active); 4208 adjustheap (periodics, periodiccnt, active);
3344 } 4209 }
3345 } 4210 }
… …
3347 ev_stop (EV_A_ (W)w); 4212 ev_stop (EV_A_ (W)w);
3348 4213
3349 EV_FREQUENT_CHECK; 4214 EV_FREQUENT_CHECK;
3350} 4215}
3351 4216
3352void noinline 4217ecb_noinline
4218void
3353ev_periodic_again (EV_P_ ev_periodic *w) 4219ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
3354{ 4220{
3355 /* TODO: use adjustheap and recalculation */ 4221 /* TODO: use adjustheap and recalculation */
3356 ev_periodic_stop (EV_A_ w); 4222 ev_periodic_stop (EV_A_ w);
3357 ev_periodic_start (EV_A_ w); 4223 ev_periodic_start (EV_A_ w);
3358} 4224}
… …
3362# define SA_RESTART 0 4228# define SA_RESTART 0
3363#endif 4229#endif
3364 4230
3365#if EV_SIGNAL_ENABLE 4231#if EV_SIGNAL_ENABLE
3366 4232
3367void noinline 4233ecb_noinline
4234void
3368ev_signal_start (EV_P_ ev_signal *w) 4235ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
3369{ 4236{
3370 if (expect_false (ev_is_active (w))) 4237 if (ecb_expect_false (ev_is_active (w)))
3371 return; 4238 return;
3372 4239
3373 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4240 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
3374 4241
3375#if EV_MULTIPLICITY 4242#if EV_MULTIPLICITY
3376 assert (("libev: a signal must not be attached to two different loops", 4243 assert (("libev: a signal must not be attached to two different loops",
3377 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4244 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3378 4245
3379 signals [w->signum - 1].loop = EV_A; 4246 signals [w->signum - 1].loop = EV_A;
4247 ECB_MEMORY_FENCE_RELEASE;
3380#endif 4248#endif
3381 4249
3382 EV_FREQUENT_CHECK; 4250 EV_FREQUENT_CHECK;
3383 4251
3384#if EV_USE_SIGNALFD 4252#if EV_USE_SIGNALFD
… …
3443 } 4311 }
3444 4312
3445 EV_FREQUENT_CHECK; 4313 EV_FREQUENT_CHECK;
3446} 4314}
3447 4315
3448void noinline 4316ecb_noinline
4317void
3449ev_signal_stop (EV_P_ ev_signal *w) 4318ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
3450{ 4319{
3451 clear_pending (EV_A_ (W)w); 4320 clear_pending (EV_A_ (W)w);
3452 if (expect_false (!ev_is_active (w))) 4321 if (ecb_expect_false (!ev_is_active (w)))
3453 return; 4322 return;
3454 4323
3455 EV_FREQUENT_CHECK; 4324 EV_FREQUENT_CHECK;
3456 4325
3457 wlist_del (&signals [w->signum - 1].head, (WL)w); 4326 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
3485#endif 4354#endif
3486 4355
3487#if EV_CHILD_ENABLE 4356#if EV_CHILD_ENABLE
3488 4357
3489void 4358void
3490ev_child_start (EV_P_ ev_child *w) 4359ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
3491{ 4360{
3492#if EV_MULTIPLICITY 4361#if EV_MULTIPLICITY
3493 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4362 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3494#endif 4363#endif
3495 if (expect_false (ev_is_active (w))) 4364 if (ecb_expect_false (ev_is_active (w)))
3496 return; 4365 return;
3497 4366
3498 EV_FREQUENT_CHECK; 4367 EV_FREQUENT_CHECK;
3499 4368
3500 ev_start (EV_A_ (W)w, 1); 4369 ev_start (EV_A_ (W)w, 1);
… …
3502 4371
3503 EV_FREQUENT_CHECK; 4372 EV_FREQUENT_CHECK;
3504} 4373}
3505 4374
3506void 4375void
3507ev_child_stop (EV_P_ ev_child *w) 4376ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
3508{ 4377{
3509 clear_pending (EV_A_ (W)w); 4378 clear_pending (EV_A_ (W)w);
3510 if (expect_false (!ev_is_active (w))) 4379 if (ecb_expect_false (!ev_is_active (w)))
3511 return; 4380 return;
3512 4381
3513 EV_FREQUENT_CHECK; 4382 EV_FREQUENT_CHECK;
3514 4383
3515 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); 4384 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
… …
3529 4398
3530#define DEF_STAT_INTERVAL 5.0074891 4399#define DEF_STAT_INTERVAL 5.0074891
3531#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4400#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3532#define MIN_STAT_INTERVAL 0.1074891 4401#define MIN_STAT_INTERVAL 0.1074891
3533 4402
3534static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4403ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
3535 4404
3536#if EV_USE_INOTIFY 4405#if EV_USE_INOTIFY
3537 4406
3538/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4407/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3539# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4408# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3540 4409
3541static void noinline 4410ecb_noinline
4411static void
3542infy_add (EV_P_ ev_stat *w) 4412infy_add (EV_P_ ev_stat *w)
3543{ 4413{
3544 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); 4414 w->wd = inotify_add_watch (fs_fd, w->path,
4415 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4416 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4417 | IN_DONT_FOLLOW | IN_MASK_ADD);
3545 4418
3546 if (w->wd >= 0) 4419 if (w->wd >= 0)
3547 { 4420 {
3548 struct statfs sfs; 4421 struct statfs sfs;
3549 4422
… …
3553 4426
3554 if (!fs_2625) 4427 if (!fs_2625)
3555 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4428 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3556 else if (!statfs (w->path, &sfs) 4429 else if (!statfs (w->path, &sfs)
3557 && (sfs.f_type == 0x1373 /* devfs */ 4430 && (sfs.f_type == 0x1373 /* devfs */
4431 || sfs.f_type == 0x4006 /* fat */
4432 || sfs.f_type == 0x4d44 /* msdos */
3558 || sfs.f_type == 0xEF53 /* ext2/3 */ 4433 || sfs.f_type == 0xEF53 /* ext2/3 */
4434 || sfs.f_type == 0x72b6 /* jffs2 */
4435 || sfs.f_type == 0x858458f6 /* ramfs */
4436 || sfs.f_type == 0x5346544e /* ntfs */
3559 || sfs.f_type == 0x3153464a /* jfs */ 4437 || sfs.f_type == 0x3153464a /* jfs */
4438 || sfs.f_type == 0x9123683e /* btrfs */
3560 || sfs.f_type == 0x52654973 /* reiser3 */ 4439 || sfs.f_type == 0x52654973 /* reiser3 */
3561 || sfs.f_type == 0x01021994 /* tempfs */ 4440 || sfs.f_type == 0x01021994 /* tmpfs */
3562 || sfs.f_type == 0x58465342 /* xfs */)) 4441 || sfs.f_type == 0x58465342 /* xfs */))
3563 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4442 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3564 else 4443 else
3565 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4444 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3566 } 4445 }
… …
3601 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4480 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3602 ev_timer_again (EV_A_ &w->timer); 4481 ev_timer_again (EV_A_ &w->timer);
3603 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4482 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3604} 4483}
3605 4484
3606static void noinline 4485ecb_noinline
4486static void
3607infy_del (EV_P_ ev_stat *w) 4487infy_del (EV_P_ ev_stat *w)
3608{ 4488{
3609 int slot; 4489 int slot;
3610 int wd = w->wd; 4490 int wd = w->wd;
3611 4491
… …
3618 4498
3619 /* remove this watcher, if others are watching it, they will rearm */ 4499 /* remove this watcher, if others are watching it, they will rearm */
3620 inotify_rm_watch (fs_fd, wd); 4500 inotify_rm_watch (fs_fd, wd);
3621} 4501}
3622 4502
3623static void noinline 4503ecb_noinline
4504static void
3624infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4505infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3625{ 4506{
3626 if (slot < 0) 4507 if (slot < 0)
3627 /* overflow, need to check for all hash slots */ 4508 /* overflow, need to check for all hash slots */
3628 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4509 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3664 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4545 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3665 ofs += sizeof (struct inotify_event) + ev->len; 4546 ofs += sizeof (struct inotify_event) + ev->len;
3666 } 4547 }
3667} 4548}
3668 4549
3669inline_size void ecb_cold 4550inline_size ecb_cold
4551void
3670ev_check_2625 (EV_P) 4552ev_check_2625 (EV_P)
3671{ 4553{
3672 /* kernels < 2.6.25 are borked 4554 /* kernels < 2.6.25 are borked
3673 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4555 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3674 */ 4556 */
… …
3679} 4561}
3680 4562
3681inline_size int 4563inline_size int
3682infy_newfd (void) 4564infy_newfd (void)
3683{ 4565{
3684#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4566#if defined IN_CLOEXEC && defined IN_NONBLOCK
3685 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4567 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3686 if (fd >= 0) 4568 if (fd >= 0)
3687 return fd; 4569 return fd;
3688#endif 4570#endif
3689 return inotify_init (); 4571 return inotify_init ();
… …
3764#else 4646#else
3765# define EV_LSTAT(p,b) lstat (p, b) 4647# define EV_LSTAT(p,b) lstat (p, b)
3766#endif 4648#endif
3767 4649
3768void 4650void
3769ev_stat_stat (EV_P_ ev_stat *w) 4651ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3770{ 4652{
3771 if (lstat (w->path, &w->attr) < 0) 4653 if (lstat (w->path, &w->attr) < 0)
3772 w->attr.st_nlink = 0; 4654 w->attr.st_nlink = 0;
3773 else if (!w->attr.st_nlink) 4655 else if (!w->attr.st_nlink)
3774 w->attr.st_nlink = 1; 4656 w->attr.st_nlink = 1;
3775} 4657}
3776 4658
3777static void noinline 4659ecb_noinline
4660static void
3778stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4661stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3779{ 4662{
3780 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4663 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3781 4664
3782 ev_statdata prev = w->attr; 4665 ev_statdata prev = w->attr;
… …
3813 ev_feed_event (EV_A_ w, EV_STAT); 4696 ev_feed_event (EV_A_ w, EV_STAT);
3814 } 4697 }
3815} 4698}
3816 4699
3817void 4700void
3818ev_stat_start (EV_P_ ev_stat *w) 4701ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3819{ 4702{
3820 if (expect_false (ev_is_active (w))) 4703 if (ecb_expect_false (ev_is_active (w)))
3821 return; 4704 return;
3822 4705
3823 ev_stat_stat (EV_A_ w); 4706 ev_stat_stat (EV_A_ w);
3824 4707
3825 if (w->interval < MIN_STAT_INTERVAL && w->interval) 4708 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
3844 4727
3845 EV_FREQUENT_CHECK; 4728 EV_FREQUENT_CHECK;
3846} 4729}
3847 4730
3848void 4731void
3849ev_stat_stop (EV_P_ ev_stat *w) 4732ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3850{ 4733{
3851 clear_pending (EV_A_ (W)w); 4734 clear_pending (EV_A_ (W)w);
3852 if (expect_false (!ev_is_active (w))) 4735 if (ecb_expect_false (!ev_is_active (w)))
3853 return; 4736 return;
3854 4737
3855 EV_FREQUENT_CHECK; 4738 EV_FREQUENT_CHECK;
3856 4739
3857#if EV_USE_INOTIFY 4740#if EV_USE_INOTIFY
… …
3870} 4753}
3871#endif 4754#endif
3872 4755
3873#if EV_IDLE_ENABLE 4756#if EV_IDLE_ENABLE
3874void 4757void
3875ev_idle_start (EV_P_ ev_idle *w) 4758ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3876{ 4759{
3877 if (expect_false (ev_is_active (w))) 4760 if (ecb_expect_false (ev_is_active (w)))
3878 return; 4761 return;
3879 4762
3880 pri_adjust (EV_A_ (W)w); 4763 pri_adjust (EV_A_ (W)w);
3881 4764
3882 EV_FREQUENT_CHECK; 4765 EV_FREQUENT_CHECK;
… …
3885 int active = ++idlecnt [ABSPRI (w)]; 4768 int active = ++idlecnt [ABSPRI (w)];
3886 4769
3887 ++idleall; 4770 ++idleall;
3888 ev_start (EV_A_ (W)w, active); 4771 ev_start (EV_A_ (W)w, active);
3889 4772
3890 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4773 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
3891 idles [ABSPRI (w)][active - 1] = w; 4774 idles [ABSPRI (w)][active - 1] = w;
3892 } 4775 }
3893 4776
3894 EV_FREQUENT_CHECK; 4777 EV_FREQUENT_CHECK;
3895} 4778}
3896 4779
3897void 4780void
3898ev_idle_stop (EV_P_ ev_idle *w) 4781ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3899{ 4782{
3900 clear_pending (EV_A_ (W)w); 4783 clear_pending (EV_A_ (W)w);
3901 if (expect_false (!ev_is_active (w))) 4784 if (ecb_expect_false (!ev_is_active (w)))
3902 return; 4785 return;
3903 4786
3904 EV_FREQUENT_CHECK; 4787 EV_FREQUENT_CHECK;
3905 4788
3906 { 4789 {
… …
3917} 4800}
3918#endif 4801#endif
3919 4802
3920#if EV_PREPARE_ENABLE 4803#if EV_PREPARE_ENABLE
3921void 4804void
3922ev_prepare_start (EV_P_ ev_prepare *w) 4805ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3923{ 4806{
3924 if (expect_false (ev_is_active (w))) 4807 if (ecb_expect_false (ev_is_active (w)))
3925 return; 4808 return;
3926 4809
3927 EV_FREQUENT_CHECK; 4810 EV_FREQUENT_CHECK;
3928 4811
3929 ev_start (EV_A_ (W)w, ++preparecnt); 4812 ev_start (EV_A_ (W)w, ++preparecnt);
3930 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4813 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3931 prepares [preparecnt - 1] = w; 4814 prepares [preparecnt - 1] = w;
3932 4815
3933 EV_FREQUENT_CHECK; 4816 EV_FREQUENT_CHECK;
3934} 4817}
3935 4818
3936void 4819void
3937ev_prepare_stop (EV_P_ ev_prepare *w) 4820ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3938{ 4821{
3939 clear_pending (EV_A_ (W)w); 4822 clear_pending (EV_A_ (W)w);
3940 if (expect_false (!ev_is_active (w))) 4823 if (ecb_expect_false (!ev_is_active (w)))
3941 return; 4824 return;
3942 4825
3943 EV_FREQUENT_CHECK; 4826 EV_FREQUENT_CHECK;
3944 4827
3945 { 4828 {
… …
3955} 4838}
3956#endif 4839#endif
3957 4840
3958#if EV_CHECK_ENABLE 4841#if EV_CHECK_ENABLE
3959void 4842void
3960ev_check_start (EV_P_ ev_check *w) 4843ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3961{ 4844{
3962 if (expect_false (ev_is_active (w))) 4845 if (ecb_expect_false (ev_is_active (w)))
3963 return; 4846 return;
3964 4847
3965 EV_FREQUENT_CHECK; 4848 EV_FREQUENT_CHECK;
3966 4849
3967 ev_start (EV_A_ (W)w, ++checkcnt); 4850 ev_start (EV_A_ (W)w, ++checkcnt);
3968 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4851 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
3969 checks [checkcnt - 1] = w; 4852 checks [checkcnt - 1] = w;
3970 4853
3971 EV_FREQUENT_CHECK; 4854 EV_FREQUENT_CHECK;
3972} 4855}
3973 4856
3974void 4857void
3975ev_check_stop (EV_P_ ev_check *w) 4858ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
3976{ 4859{
3977 clear_pending (EV_A_ (W)w); 4860 clear_pending (EV_A_ (W)w);
3978 if (expect_false (!ev_is_active (w))) 4861 if (ecb_expect_false (!ev_is_active (w)))
3979 return; 4862 return;
3980 4863
3981 EV_FREQUENT_CHECK; 4864 EV_FREQUENT_CHECK;
3982 4865
3983 { 4866 {
… …
3992 EV_FREQUENT_CHECK; 4875 EV_FREQUENT_CHECK;
3993} 4876}
3994#endif 4877#endif
3995 4878
3996#if EV_EMBED_ENABLE 4879#if EV_EMBED_ENABLE
3997void noinline 4880ecb_noinline
4881void
3998ev_embed_sweep (EV_P_ ev_embed *w) 4882ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3999{ 4883{
4000 ev_run (w->other, EVRUN_NOWAIT); 4884 ev_run (w->other, EVRUN_NOWAIT);
4001} 4885}
4002 4886
4003static void 4887static void
… …
4051 ev_idle_stop (EV_A_ idle); 4935 ev_idle_stop (EV_A_ idle);
4052} 4936}
4053#endif 4937#endif
4054 4938
4055void 4939void
4056ev_embed_start (EV_P_ ev_embed *w) 4940ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
4057{ 4941{
4058 if (expect_false (ev_is_active (w))) 4942 if (ecb_expect_false (ev_is_active (w)))
4059 return; 4943 return;
4060 4944
4061 { 4945 {
4062 EV_P = w->other; 4946 EV_P = w->other;
4063 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4947 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
… …
4082 4966
4083 EV_FREQUENT_CHECK; 4967 EV_FREQUENT_CHECK;
4084} 4968}
4085 4969
4086void 4970void
4087ev_embed_stop (EV_P_ ev_embed *w) 4971ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
4088{ 4972{
4089 clear_pending (EV_A_ (W)w); 4973 clear_pending (EV_A_ (W)w);
4090 if (expect_false (!ev_is_active (w))) 4974 if (ecb_expect_false (!ev_is_active (w)))
4091 return; 4975 return;
4092 4976
4093 EV_FREQUENT_CHECK; 4977 EV_FREQUENT_CHECK;
4094 4978
4095 ev_io_stop (EV_A_ &w->io); 4979 ev_io_stop (EV_A_ &w->io);
… …
4102} 4986}
4103#endif 4987#endif
4104 4988
4105#if EV_FORK_ENABLE 4989#if EV_FORK_ENABLE
4106void 4990void
4107ev_fork_start (EV_P_ ev_fork *w) 4991ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
4108{ 4992{
4109 if (expect_false (ev_is_active (w))) 4993 if (ecb_expect_false (ev_is_active (w)))
4110 return; 4994 return;
4111 4995
4112 EV_FREQUENT_CHECK; 4996 EV_FREQUENT_CHECK;
4113 4997
4114 ev_start (EV_A_ (W)w, ++forkcnt); 4998 ev_start (EV_A_ (W)w, ++forkcnt);
4115 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 4999 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
4116 forks [forkcnt - 1] = w; 5000 forks [forkcnt - 1] = w;
4117 5001
4118 EV_FREQUENT_CHECK; 5002 EV_FREQUENT_CHECK;
4119} 5003}
4120 5004
4121void 5005void
4122ev_fork_stop (EV_P_ ev_fork *w) 5006ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
4123{ 5007{
4124 clear_pending (EV_A_ (W)w); 5008 clear_pending (EV_A_ (W)w);
4125 if (expect_false (!ev_is_active (w))) 5009 if (ecb_expect_false (!ev_is_active (w)))
4126 return; 5010 return;
4127 5011
4128 EV_FREQUENT_CHECK; 5012 EV_FREQUENT_CHECK;
4129 5013
4130 { 5014 {
… …
4140} 5024}
4141#endif 5025#endif
4142 5026
4143#if EV_CLEANUP_ENABLE 5027#if EV_CLEANUP_ENABLE
4144void 5028void
4145ev_cleanup_start (EV_P_ ev_cleanup *w) 5029ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4146{ 5030{
4147 if (expect_false (ev_is_active (w))) 5031 if (ecb_expect_false (ev_is_active (w)))
4148 return; 5032 return;
4149 5033
4150 EV_FREQUENT_CHECK; 5034 EV_FREQUENT_CHECK;
4151 5035
4152 ev_start (EV_A_ (W)w, ++cleanupcnt); 5036 ev_start (EV_A_ (W)w, ++cleanupcnt);
4153 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 5037 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
4154 cleanups [cleanupcnt - 1] = w; 5038 cleanups [cleanupcnt - 1] = w;
4155 5039
4156 /* cleanup watchers should never keep a refcount on the loop */ 5040 /* cleanup watchers should never keep a refcount on the loop */
4157 ev_unref (EV_A); 5041 ev_unref (EV_A);
4158 EV_FREQUENT_CHECK; 5042 EV_FREQUENT_CHECK;
4159} 5043}
4160 5044
4161void 5045void
4162ev_cleanup_stop (EV_P_ ev_cleanup *w) 5046ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4163{ 5047{
4164 clear_pending (EV_A_ (W)w); 5048 clear_pending (EV_A_ (W)w);
4165 if (expect_false (!ev_is_active (w))) 5049 if (ecb_expect_false (!ev_is_active (w)))
4166 return; 5050 return;
4167 5051
4168 EV_FREQUENT_CHECK; 5052 EV_FREQUENT_CHECK;
4169 ev_ref (EV_A); 5053 ev_ref (EV_A);
4170 5054
… …
4181} 5065}
4182#endif 5066#endif
4183 5067
4184#if EV_ASYNC_ENABLE 5068#if EV_ASYNC_ENABLE
4185void 5069void
4186ev_async_start (EV_P_ ev_async *w) 5070ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4187{ 5071{
4188 if (expect_false (ev_is_active (w))) 5072 if (ecb_expect_false (ev_is_active (w)))
4189 return; 5073 return;
4190 5074
4191 w->sent = 0; 5075 w->sent = 0;
4192 5076
4193 evpipe_init (EV_A); 5077 evpipe_init (EV_A);
4194 5078
4195 EV_FREQUENT_CHECK; 5079 EV_FREQUENT_CHECK;
4196 5080
4197 ev_start (EV_A_ (W)w, ++asynccnt); 5081 ev_start (EV_A_ (W)w, ++asynccnt);
4198 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5082 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
4199 asyncs [asynccnt - 1] = w; 5083 asyncs [asynccnt - 1] = w;
4200 5084
4201 EV_FREQUENT_CHECK; 5085 EV_FREQUENT_CHECK;
4202} 5086}
4203 5087
4204void 5088void
4205ev_async_stop (EV_P_ ev_async *w) 5089ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4206{ 5090{
4207 clear_pending (EV_A_ (W)w); 5091 clear_pending (EV_A_ (W)w);
4208 if (expect_false (!ev_is_active (w))) 5092 if (ecb_expect_false (!ev_is_active (w)))
4209 return; 5093 return;
4210 5094
4211 EV_FREQUENT_CHECK; 5095 EV_FREQUENT_CHECK;
4212 5096
4213 { 5097 {
… …
4221 5105
4222 EV_FREQUENT_CHECK; 5106 EV_FREQUENT_CHECK;
4223} 5107}
4224 5108
4225void 5109void
4226ev_async_send (EV_P_ ev_async *w) 5110ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
4227{ 5111{
4228 w->sent = 1; 5112 w->sent = 1;
4229 evpipe_write (EV_A_ &async_pending); 5113 evpipe_write (EV_A_ &async_pending);
4230} 5114}
4231#endif 5115#endif
… …
4268 5152
4269 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5153 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
4270} 5154}
4271 5155
4272void 5156void
4273ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5157ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
4274{ 5158{
4275 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5159 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
4276
4277 if (expect_false (!once))
4278 {
4279 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
4280 return;
4281 }
4282 5160
4283 once->cb = cb; 5161 once->cb = cb;
4284 once->arg = arg; 5162 once->arg = arg;
4285 5163
4286 ev_init (&once->io, once_cb_io); 5164 ev_init (&once->io, once_cb_io);
… …
4299} 5177}
4300 5178
4301/*****************************************************************************/ 5179/*****************************************************************************/
4302 5180
4303#if EV_WALK_ENABLE 5181#if EV_WALK_ENABLE
4304void ecb_cold 5182ecb_cold
5183void
4305ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5184ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
4306{ 5185{
4307 int i, j; 5186 int i, j;
4308 ev_watcher_list *wl, *wn; 5187 ev_watcher_list *wl, *wn;
4309 5188
4310 if (types & (EV_IO | EV_EMBED)) 5189 if (types & (EV_IO | EV_EMBED))
… …
4416 5295
4417#if EV_MULTIPLICITY 5296#if EV_MULTIPLICITY
4418 #include "ev_wrap.h" 5297 #include "ev_wrap.h"
4419#endif 5298#endif
4420 5299
4421EV_CPP(})
4422

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