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Comparing libev/ev.c (file contents):
Revision 1.343 by root, Fri Apr 2 21:03:46 2010 UTC vs.
Revision 1.471 by root, Tue Sep 9 12:41:56 2014 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 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011,2012,2013 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 *
10 * 1. Redistributions of source code must retain the above copyright notice, 10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer. 11 * this list of conditions and the following disclaimer.
12 * 12 *
13 * 2. Redistributions in binary form must reproduce the above copyright 13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the 14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution. 15 * documentation and/or other materials provided with the distribution.
16 * 16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- 20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
46# endif
47
48# if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
50# endif 52# endif
51 53
52# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
… …
57# endif 59# endif
58# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
60# endif 62# endif
61# endif 63# endif
62# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
63# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
64# endif 66# endif
65 67
66# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
67# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
160# define EV_USE_EVENTFD 0 162# define EV_USE_EVENTFD 0
161# endif 163# endif
162 164
163#endif 165#endif
164 166
165#include <math.h>
166#include <stdlib.h> 167#include <stdlib.h>
167#include <string.h> 168#include <string.h>
168#include <fcntl.h> 169#include <fcntl.h>
169#include <stddef.h> 170#include <stddef.h>
170 171
… …
180 181
181#ifdef EV_H 182#ifdef EV_H
182# include EV_H 183# include EV_H
183#else 184#else
184# include "ev.h" 185# include "ev.h"
186#endif
187
188#if EV_NO_THREADS
189# undef EV_NO_SMP
190# define EV_NO_SMP 1
191# undef ECB_NO_THREADS
192# define ECB_NO_THREADS 1
193#endif
194#if EV_NO_SMP
195# undef EV_NO_SMP
196# define ECB_NO_SMP 1
185#endif 197#endif
186 198
187#ifndef _WIN32 199#ifndef _WIN32
188# include <sys/time.h> 200# include <sys/time.h>
189# include <sys/wait.h> 201# include <sys/wait.h>
190# include <unistd.h> 202# include <unistd.h>
191#else 203#else
192# include <io.h> 204# include <io.h>
193# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
206# include <winsock2.h>
194# include <windows.h> 207# include <windows.h>
195# ifndef EV_SELECT_IS_WINSOCKET 208# ifndef EV_SELECT_IS_WINSOCKET
196# define EV_SELECT_IS_WINSOCKET 1 209# define EV_SELECT_IS_WINSOCKET 1
197# endif 210# endif
198# undef EV_AVOID_STDIO 211# undef EV_AVOID_STDIO
199#endif 212#endif
200 213
214/* OS X, in its infinite idiocy, actually HARDCODES
215 * a limit of 1024 into their select. Where people have brains,
216 * OS X engineers apparently have a vacuum. Or maybe they were
217 * ordered to have a vacuum, or they do anything for money.
218 * This might help. Or not.
219 */
220#define _DARWIN_UNLIMITED_SELECT 1
221
201/* this block tries to deduce configuration from header-defined symbols and defaults */ 222/* this block tries to deduce configuration from header-defined symbols and defaults */
202 223
203/* try to deduce the maximum number of signals on this platform */ 224/* try to deduce the maximum number of signals on this platform */
204#if defined (EV_NSIG) 225#if defined EV_NSIG
205/* use what's provided */ 226/* use what's provided */
206#elif defined (NSIG) 227#elif defined NSIG
207# define EV_NSIG (NSIG) 228# define EV_NSIG (NSIG)
208#elif defined(_NSIG) 229#elif defined _NSIG
209# define EV_NSIG (_NSIG) 230# define EV_NSIG (_NSIG)
210#elif defined (SIGMAX) 231#elif defined SIGMAX
211# define EV_NSIG (SIGMAX+1) 232# define EV_NSIG (SIGMAX+1)
212#elif defined (SIG_MAX) 233#elif defined SIG_MAX
213# define EV_NSIG (SIG_MAX+1) 234# define EV_NSIG (SIG_MAX+1)
214#elif defined (_SIG_MAX) 235#elif defined _SIG_MAX
215# define EV_NSIG (_SIG_MAX+1) 236# define EV_NSIG (_SIG_MAX+1)
216#elif defined (MAXSIG) 237#elif defined MAXSIG
217# define EV_NSIG (MAXSIG+1) 238# define EV_NSIG (MAXSIG+1)
218#elif defined (MAX_SIG) 239#elif defined MAX_SIG
219# define EV_NSIG (MAX_SIG+1) 240# define EV_NSIG (MAX_SIG+1)
220#elif defined (SIGARRAYSIZE) 241#elif defined SIGARRAYSIZE
221# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 242# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
222#elif defined (_sys_nsig) 243#elif defined _sys_nsig
223# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 244# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
224#else 245#else
225# error "unable to find value for NSIG, please report" 246# define EV_NSIG (8 * sizeof (sigset_t) + 1)
226/* to make it compile regardless, just remove the above line, */ 247#endif
227/* but consider reporting it, too! :) */ 248
228# define EV_NSIG 65 249#ifndef EV_USE_FLOOR
250# define EV_USE_FLOOR 0
229#endif 251#endif
230 252
231#ifndef EV_USE_CLOCK_SYSCALL 253#ifndef EV_USE_CLOCK_SYSCALL
232# if __linux && __GLIBC__ >= 2 254# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
233# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 255# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
234# else 256# else
235# define EV_USE_CLOCK_SYSCALL 0 257# define EV_USE_CLOCK_SYSCALL 0
236# endif 258# endif
237#endif 259#endif
238 260
261#if !(_POSIX_TIMERS > 0)
262# ifndef EV_USE_MONOTONIC
263# define EV_USE_MONOTONIC 0
264# endif
265# ifndef EV_USE_REALTIME
266# define EV_USE_REALTIME 0
267# endif
268#endif
269
239#ifndef EV_USE_MONOTONIC 270#ifndef EV_USE_MONOTONIC
240# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 271# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
241# define EV_USE_MONOTONIC EV_FEATURE_OS 272# define EV_USE_MONOTONIC EV_FEATURE_OS
242# else 273# else
243# define EV_USE_MONOTONIC 0 274# define EV_USE_MONOTONIC 0
244# endif 275# endif
245#endif 276#endif
… …
332 363
333#ifndef EV_HEAP_CACHE_AT 364#ifndef EV_HEAP_CACHE_AT
334# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 365# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
335#endif 366#endif
336 367
368#ifdef ANDROID
369/* supposedly, android doesn't typedef fd_mask */
370# undef EV_USE_SELECT
371# define EV_USE_SELECT 0
372/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
373# undef EV_USE_CLOCK_SYSCALL
374# define EV_USE_CLOCK_SYSCALL 0
375#endif
376
377/* aix's poll.h seems to cause lots of trouble */
378#ifdef _AIX
379/* AIX has a completely broken poll.h header */
380# undef EV_USE_POLL
381# define EV_USE_POLL 0
382#endif
383
337/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 384/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
338/* which makes programs even slower. might work on other unices, too. */ 385/* which makes programs even slower. might work on other unices, too. */
339#if EV_USE_CLOCK_SYSCALL 386#if EV_USE_CLOCK_SYSCALL
340# include <syscall.h> 387# include <sys/syscall.h>
341# ifdef SYS_clock_gettime 388# ifdef SYS_clock_gettime
342# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 389# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
343# undef EV_USE_MONOTONIC 390# undef EV_USE_MONOTONIC
344# define EV_USE_MONOTONIC 1 391# define EV_USE_MONOTONIC 1
345# else 392# else
… …
348# endif 395# endif
349#endif 396#endif
350 397
351/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 398/* this block fixes any misconfiguration where we know we run into trouble otherwise */
352 399
353#ifdef _AIX
354/* AIX has a completely broken poll.h header */
355# undef EV_USE_POLL
356# define EV_USE_POLL 0
357#endif
358
359#ifndef CLOCK_MONOTONIC 400#ifndef CLOCK_MONOTONIC
360# undef EV_USE_MONOTONIC 401# undef EV_USE_MONOTONIC
361# define EV_USE_MONOTONIC 0 402# define EV_USE_MONOTONIC 0
362#endif 403#endif
363 404
… …
370# undef EV_USE_INOTIFY 411# undef EV_USE_INOTIFY
371# define EV_USE_INOTIFY 0 412# define EV_USE_INOTIFY 0
372#endif 413#endif
373 414
374#if !EV_USE_NANOSLEEP 415#if !EV_USE_NANOSLEEP
375# ifndef _WIN32 416/* hp-ux has it in sys/time.h, which we unconditionally include above */
417# if !defined _WIN32 && !defined __hpux
376# include <sys/select.h> 418# include <sys/select.h>
377# endif 419# endif
378#endif 420#endif
379 421
380#if EV_USE_INOTIFY 422#if EV_USE_INOTIFY
381# include <sys/utsname.h>
382# include <sys/statfs.h> 423# include <sys/statfs.h>
383# include <sys/inotify.h> 424# include <sys/inotify.h>
384/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 425/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
385# ifndef IN_DONT_FOLLOW 426# ifndef IN_DONT_FOLLOW
386# undef EV_USE_INOTIFY 427# undef EV_USE_INOTIFY
387# define EV_USE_INOTIFY 0 428# define EV_USE_INOTIFY 0
388# endif 429# endif
389#endif
390
391#if EV_SELECT_IS_WINSOCKET
392# include <winsock.h>
393#endif 430#endif
394 431
395#if EV_USE_EVENTFD 432#if EV_USE_EVENTFD
396/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 433/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
397# include <stdint.h> 434# include <stdint.h>
… …
403# define EFD_CLOEXEC O_CLOEXEC 440# define EFD_CLOEXEC O_CLOEXEC
404# else 441# else
405# define EFD_CLOEXEC 02000000 442# define EFD_CLOEXEC 02000000
406# endif 443# endif
407# endif 444# endif
408# ifdef __cplusplus
409extern "C" {
410# endif
411int (eventfd) (unsigned int initval, int flags); 445EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
412# ifdef __cplusplus
413}
414# endif
415#endif 446#endif
416 447
417#if EV_USE_SIGNALFD 448#if EV_USE_SIGNALFD
418/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 449/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
419# include <stdint.h> 450# include <stdint.h>
… …
425# define SFD_CLOEXEC O_CLOEXEC 456# define SFD_CLOEXEC O_CLOEXEC
426# else 457# else
427# define SFD_CLOEXEC 02000000 458# define SFD_CLOEXEC 02000000
428# endif 459# endif
429# endif 460# endif
430# ifdef __cplusplus
431extern "C" {
432# endif
433int signalfd (int fd, const sigset_t *mask, int flags); 461EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
434 462
435struct signalfd_siginfo 463struct signalfd_siginfo
436{ 464{
437 uint32_t ssi_signo; 465 uint32_t ssi_signo;
438 char pad[128 - sizeof (uint32_t)]; 466 char pad[128 - sizeof (uint32_t)];
439}; 467};
440# ifdef __cplusplus
441}
442# endif 468#endif
443#endif
444
445 469
446/**/ 470/**/
447 471
448#if EV_VERIFY >= 3 472#if EV_VERIFY >= 3
449# define EV_FREQUENT_CHECK ev_verify (EV_A) 473# define EV_FREQUENT_CHECK ev_verify (EV_A)
450#else 474#else
451# define EV_FREQUENT_CHECK do { } while (0) 475# define EV_FREQUENT_CHECK do { } while (0)
452#endif 476#endif
453 477
454/* 478/*
455 * This is used to avoid floating point rounding problems. 479 * This is used to work around floating point rounding problems.
456 * It is added to ev_rt_now when scheduling periodics
457 * to ensure progress, time-wise, even when rounding
458 * errors are against us.
459 * This value is good at least till the year 4000. 480 * This value is good at least till the year 4000.
460 * Better solutions welcome.
461 */ 481 */
462#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 482#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
483/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
463 484
464#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 485#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
465#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 486#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
466 487
488#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
489#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
490
491/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
492/* ECB.H BEGIN */
493/*
494 * libecb - http://software.schmorp.de/pkg/libecb
495 *
496 * Copyright (©) 2009-2014 Marc Alexander Lehmann <libecb@schmorp.de>
497 * Copyright (©) 2011 Emanuele Giaquinta
498 * All rights reserved.
499 *
500 * Redistribution and use in source and binary forms, with or without modifica-
501 * tion, are permitted provided that the following conditions are met:
502 *
503 * 1. Redistributions of source code must retain the above copyright notice,
504 * this list of conditions and the following disclaimer.
505 *
506 * 2. Redistributions in binary form must reproduce the above copyright
507 * notice, this list of conditions and the following disclaimer in the
508 * documentation and/or other materials provided with the distribution.
509 *
510 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
511 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
512 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
513 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
514 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
515 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
516 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
517 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
518 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
519 * OF THE POSSIBILITY OF SUCH DAMAGE.
520 *
521 * Alternatively, the contents of this file may be used under the terms of
522 * the GNU General Public License ("GPL") version 2 or any later version,
523 * in which case the provisions of the GPL are applicable instead of
524 * the above. If you wish to allow the use of your version of this file
525 * only under the terms of the GPL and not to allow others to use your
526 * version of this file under the BSD license, indicate your decision
527 * by deleting the provisions above and replace them with the notice
528 * and other provisions required by the GPL. If you do not delete the
529 * provisions above, a recipient may use your version of this file under
530 * either the BSD or the GPL.
531 */
532
533#ifndef ECB_H
534#define ECB_H
535
536/* 16 bits major, 16 bits minor */
537#define ECB_VERSION 0x00010003
538
539#ifdef _WIN32
540 typedef signed char int8_t;
541 typedef unsigned char uint8_t;
542 typedef signed short int16_t;
543 typedef unsigned short uint16_t;
544 typedef signed int int32_t;
545 typedef unsigned int uint32_t;
467#if __GNUC__ >= 4 546 #if __GNUC__
468# define expect(expr,value) __builtin_expect ((expr),(value)) 547 typedef signed long long int64_t;
469# define noinline __attribute__ ((noinline)) 548 typedef unsigned long long uint64_t;
549 #else /* _MSC_VER || __BORLANDC__ */
550 typedef signed __int64 int64_t;
551 typedef unsigned __int64 uint64_t;
552 #endif
553 #ifdef _WIN64
554 #define ECB_PTRSIZE 8
555 typedef uint64_t uintptr_t;
556 typedef int64_t intptr_t;
557 #else
558 #define ECB_PTRSIZE 4
559 typedef uint32_t uintptr_t;
560 typedef int32_t intptr_t;
561 #endif
470#else 562#else
471# define expect(expr,value) (expr) 563 #include <inttypes.h>
472# define noinline 564 #if UINTMAX_MAX > 0xffffffffU
473# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 565 #define ECB_PTRSIZE 8
474# define inline 566 #else
567 #define ECB_PTRSIZE 4
568 #endif
475# endif 569#endif
570
571/* work around x32 idiocy by defining proper macros */
572#if __amd64 || __x86_64 || _M_AMD64 || _M_X64
573 #if _ILP32
574 #define ECB_AMD64_X32 1
575 #else
576 #define ECB_AMD64 1
476#endif 577 #endif
578#endif
477 579
580/* many compilers define _GNUC_ to some versions but then only implement
581 * what their idiot authors think are the "more important" extensions,
582 * causing enormous grief in return for some better fake benchmark numbers.
583 * or so.
584 * we try to detect these and simply assume they are not gcc - if they have
585 * an issue with that they should have done it right in the first place.
586 */
587#ifndef ECB_GCC_VERSION
588 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
589 #define ECB_GCC_VERSION(major,minor) 0
590 #else
591 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
592 #endif
593#endif
594
595#define ECB_CPP (__cplusplus+0)
596#define ECB_CPP11 (__cplusplus >= 201103L)
597
598#if ECB_CPP
599 #define ECB_C 0
600 #define ECB_STDC_VERSION 0
601#else
602 #define ECB_C 1
603 #define ECB_STDC_VERSION __STDC_VERSION__
604#endif
605
606#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
607#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
608
609#if ECB_CPP
610 #define ECB_EXTERN_C extern "C"
611 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
612 #define ECB_EXTERN_C_END }
613#else
614 #define ECB_EXTERN_C extern
615 #define ECB_EXTERN_C_BEG
616 #define ECB_EXTERN_C_END
617#endif
618
619/*****************************************************************************/
620
621/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
622/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
623
624#if ECB_NO_THREADS
625 #define ECB_NO_SMP 1
626#endif
627
628#if ECB_NO_SMP
629 #define ECB_MEMORY_FENCE do { } while (0)
630#endif
631
632#ifndef ECB_MEMORY_FENCE
633 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
634 #if __i386 || __i386__
635 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
636 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
637 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
638 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
639 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
640 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
641 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
642 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
643 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
644 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
645 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
646 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
647 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
648 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
649 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
650 #elif __aarch64__
651 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
652 #elif (__sparc || __sparc__) && !__sparcv8
653 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
654 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
655 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
656 #elif defined __s390__ || defined __s390x__
657 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
658 #elif defined __mips__
659 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
660 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
661 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
662 #elif defined __alpha__
663 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
664 #elif defined __hppa__
665 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
666 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
667 #elif defined __ia64__
668 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
669 #elif defined __m68k__
670 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
671 #elif defined __m88k__
672 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
673 #elif defined __sh__
674 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
675 #endif
676 #endif
677#endif
678
679#ifndef ECB_MEMORY_FENCE
680 #if ECB_GCC_VERSION(4,7)
681 /* see comment below (stdatomic.h) about the C11 memory model. */
682 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
683 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
684 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
685
686 /* The __has_feature syntax from clang is so misdesigned that we cannot use it
687 * without risking compile time errors with other compilers. We *could*
688 * define our own ecb_clang_has_feature, but I just can't be bothered to work
689 * around this shit time and again.
690 * #elif defined __clang && __has_feature (cxx_atomic)
691 * // see comment below (stdatomic.h) about the C11 memory model.
692 * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
693 * #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
694 * #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
695 */
696
697 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
698 #define ECB_MEMORY_FENCE __sync_synchronize ()
699 #elif _MSC_VER >= 1500 /* VC++ 2008 */
700 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
701 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
702 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
703 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
704 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
705 #elif _MSC_VER >= 1400 /* VC++ 2005 */
706 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
707 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
708 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
709 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
710 #elif defined _WIN32
711 #include <WinNT.h>
712 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
713 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
714 #include <mbarrier.h>
715 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
716 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
717 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
718 #elif __xlC__
719 #define ECB_MEMORY_FENCE __sync ()
720 #endif
721#endif
722
723#ifndef ECB_MEMORY_FENCE
724 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
725 /* we assume that these memory fences work on all variables/all memory accesses, */
726 /* not just C11 atomics and atomic accesses */
727 #include <stdatomic.h>
728 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
729 /* any fence other than seq_cst, which isn't very efficient for us. */
730 /* Why that is, we don't know - either the C11 memory model is quite useless */
731 /* for most usages, or gcc and clang have a bug */
732 /* I *currently* lean towards the latter, and inefficiently implement */
733 /* all three of ecb's fences as a seq_cst fence */
734 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
735 /* for all __atomic_thread_fence's except seq_cst */
736 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
737 #endif
738#endif
739
740#ifndef ECB_MEMORY_FENCE
741 #if !ECB_AVOID_PTHREADS
742 /*
743 * if you get undefined symbol references to pthread_mutex_lock,
744 * or failure to find pthread.h, then you should implement
745 * the ECB_MEMORY_FENCE operations for your cpu/compiler
746 * OR provide pthread.h and link against the posix thread library
747 * of your system.
748 */
749 #include <pthread.h>
750 #define ECB_NEEDS_PTHREADS 1
751 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
752
753 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
754 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
755 #endif
756#endif
757
758#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
759 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
760#endif
761
762#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
763 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
764#endif
765
766/*****************************************************************************/
767
768#if __cplusplus
769 #define ecb_inline static inline
770#elif ECB_GCC_VERSION(2,5)
771 #define ecb_inline static __inline__
772#elif ECB_C99
773 #define ecb_inline static inline
774#else
775 #define ecb_inline static
776#endif
777
778#if ECB_GCC_VERSION(3,3)
779 #define ecb_restrict __restrict__
780#elif ECB_C99
781 #define ecb_restrict restrict
782#else
783 #define ecb_restrict
784#endif
785
786typedef int ecb_bool;
787
788#define ECB_CONCAT_(a, b) a ## b
789#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
790#define ECB_STRINGIFY_(a) # a
791#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
792
793#define ecb_function_ ecb_inline
794
795#if ECB_GCC_VERSION(3,1)
796 #define ecb_attribute(attrlist) __attribute__(attrlist)
797 #define ecb_is_constant(expr) __builtin_constant_p (expr)
798 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
799 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
800#else
801 #define ecb_attribute(attrlist)
802
803 /* possible C11 impl for integral types
804 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
805 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
806
807 #define ecb_is_constant(expr) 0
808 #define ecb_expect(expr,value) (expr)
809 #define ecb_prefetch(addr,rw,locality)
810#endif
811
812/* no emulation for ecb_decltype */
813#if ECB_GCC_VERSION(4,5)
814 #define ecb_decltype(x) __decltype(x)
815#elif ECB_GCC_VERSION(3,0)
816 #define ecb_decltype(x) __typeof(x)
817#endif
818
819#if _MSC_VER >= 1300
820 #define ecb_deprecated __declspec(deprecated)
821#else
822 #define ecb_deprecated ecb_attribute ((__deprecated__))
823#endif
824
825#define ecb_noinline ecb_attribute ((__noinline__))
826#define ecb_unused ecb_attribute ((__unused__))
827#define ecb_const ecb_attribute ((__const__))
828#define ecb_pure ecb_attribute ((__pure__))
829
830/* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx __declspec(noreturn) */
831#if ECB_C11
832 #define ecb_noreturn _Noreturn
833#else
834 #define ecb_noreturn ecb_attribute ((__noreturn__))
835#endif
836
837#if ECB_GCC_VERSION(4,3)
838 #define ecb_artificial ecb_attribute ((__artificial__))
839 #define ecb_hot ecb_attribute ((__hot__))
840 #define ecb_cold ecb_attribute ((__cold__))
841#else
842 #define ecb_artificial
843 #define ecb_hot
844 #define ecb_cold
845#endif
846
847/* put around conditional expressions if you are very sure that the */
848/* expression is mostly true or mostly false. note that these return */
849/* booleans, not the expression. */
478#define expect_false(expr) expect ((expr) != 0, 0) 850#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
479#define expect_true(expr) expect ((expr) != 0, 1) 851#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
852/* for compatibility to the rest of the world */
853#define ecb_likely(expr) ecb_expect_true (expr)
854#define ecb_unlikely(expr) ecb_expect_false (expr)
855
856/* count trailing zero bits and count # of one bits */
857#if ECB_GCC_VERSION(3,4)
858 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
859 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
860 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
861 #define ecb_ctz32(x) __builtin_ctz (x)
862 #define ecb_ctz64(x) __builtin_ctzll (x)
863 #define ecb_popcount32(x) __builtin_popcount (x)
864 /* no popcountll */
865#else
866 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
867 ecb_function_ int
868 ecb_ctz32 (uint32_t x)
869 {
870 int r = 0;
871
872 x &= ~x + 1; /* this isolates the lowest bit */
873
874#if ECB_branchless_on_i386
875 r += !!(x & 0xaaaaaaaa) << 0;
876 r += !!(x & 0xcccccccc) << 1;
877 r += !!(x & 0xf0f0f0f0) << 2;
878 r += !!(x & 0xff00ff00) << 3;
879 r += !!(x & 0xffff0000) << 4;
880#else
881 if (x & 0xaaaaaaaa) r += 1;
882 if (x & 0xcccccccc) r += 2;
883 if (x & 0xf0f0f0f0) r += 4;
884 if (x & 0xff00ff00) r += 8;
885 if (x & 0xffff0000) r += 16;
886#endif
887
888 return r;
889 }
890
891 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
892 ecb_function_ int
893 ecb_ctz64 (uint64_t x)
894 {
895 int shift = x & 0xffffffffU ? 0 : 32;
896 return ecb_ctz32 (x >> shift) + shift;
897 }
898
899 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
900 ecb_function_ int
901 ecb_popcount32 (uint32_t x)
902 {
903 x -= (x >> 1) & 0x55555555;
904 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
905 x = ((x >> 4) + x) & 0x0f0f0f0f;
906 x *= 0x01010101;
907
908 return x >> 24;
909 }
910
911 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
912 ecb_function_ int ecb_ld32 (uint32_t x)
913 {
914 int r = 0;
915
916 if (x >> 16) { x >>= 16; r += 16; }
917 if (x >> 8) { x >>= 8; r += 8; }
918 if (x >> 4) { x >>= 4; r += 4; }
919 if (x >> 2) { x >>= 2; r += 2; }
920 if (x >> 1) { r += 1; }
921
922 return r;
923 }
924
925 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
926 ecb_function_ int ecb_ld64 (uint64_t x)
927 {
928 int r = 0;
929
930 if (x >> 32) { x >>= 32; r += 32; }
931
932 return r + ecb_ld32 (x);
933 }
934#endif
935
936ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;
937ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
938ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;
939ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
940
941ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
942ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
943{
944 return ( (x * 0x0802U & 0x22110U)
945 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
946}
947
948ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
949ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
950{
951 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
952 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
953 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
954 x = ( x >> 8 ) | ( x << 8);
955
956 return x;
957}
958
959ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
960ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
961{
962 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
963 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
964 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
965 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
966 x = ( x >> 16 ) | ( x << 16);
967
968 return x;
969}
970
971/* popcount64 is only available on 64 bit cpus as gcc builtin */
972/* so for this version we are lazy */
973ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
974ecb_function_ int
975ecb_popcount64 (uint64_t x)
976{
977 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
978}
979
980ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
981ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
982ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
983ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
984ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
985ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
986ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
987ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
988
989ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
990ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
991ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
992ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
993ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
994ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
995ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
996ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
997
998#if ECB_GCC_VERSION(4,3)
999 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1000 #define ecb_bswap32(x) __builtin_bswap32 (x)
1001 #define ecb_bswap64(x) __builtin_bswap64 (x)
1002#else
1003 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
1004 ecb_function_ uint16_t
1005 ecb_bswap16 (uint16_t x)
1006 {
1007 return ecb_rotl16 (x, 8);
1008 }
1009
1010 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
1011 ecb_function_ uint32_t
1012 ecb_bswap32 (uint32_t x)
1013 {
1014 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1015 }
1016
1017 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
1018 ecb_function_ uint64_t
1019 ecb_bswap64 (uint64_t x)
1020 {
1021 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1022 }
1023#endif
1024
1025#if ECB_GCC_VERSION(4,5)
1026 #define ecb_unreachable() __builtin_unreachable ()
1027#else
1028 /* this seems to work fine, but gcc always emits a warning for it :/ */
1029 ecb_inline void ecb_unreachable (void) ecb_noreturn;
1030 ecb_inline void ecb_unreachable (void) { }
1031#endif
1032
1033/* try to tell the compiler that some condition is definitely true */
1034#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1035
1036ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
1037ecb_inline unsigned char
1038ecb_byteorder_helper (void)
1039{
1040 /* the union code still generates code under pressure in gcc, */
1041 /* but less than using pointers, and always seems to */
1042 /* successfully return a constant. */
1043 /* the reason why we have this horrible preprocessor mess */
1044 /* is to avoid it in all cases, at least on common architectures */
1045 /* or when using a recent enough gcc version (>= 4.6) */
1046#if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64
1047 return 0x44;
1048#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
1049 return 0x44;
1050#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
1051 return 0x11;
1052#else
1053 union
1054 {
1055 uint32_t i;
1056 uint8_t c;
1057 } u = { 0x11223344 };
1058 return u.c;
1059#endif
1060}
1061
1062ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
1063ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
1064ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
1065ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
1066
1067#if ECB_GCC_VERSION(3,0) || ECB_C99
1068 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1069#else
1070 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1071#endif
1072
1073#if __cplusplus
1074 template<typename T>
1075 static inline T ecb_div_rd (T val, T div)
1076 {
1077 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1078 }
1079 template<typename T>
1080 static inline T ecb_div_ru (T val, T div)
1081 {
1082 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1083 }
1084#else
1085 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1086 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1087#endif
1088
1089#if ecb_cplusplus_does_not_suck
1090 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1091 template<typename T, int N>
1092 static inline int ecb_array_length (const T (&arr)[N])
1093 {
1094 return N;
1095 }
1096#else
1097 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1098#endif
1099
1100/*******************************************************************************/
1101/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1102
1103/* basically, everything uses "ieee pure-endian" floating point numbers */
1104/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1105#if 0 \
1106 || __i386 || __i386__ \
1107 || __amd64 || __amd64__ || __x86_64 || __x86_64__ \
1108 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1109 || defined __s390__ || defined __s390x__ \
1110 || defined __mips__ \
1111 || defined __alpha__ \
1112 || defined __hppa__ \
1113 || defined __ia64__ \
1114 || defined __m68k__ \
1115 || defined __m88k__ \
1116 || defined __sh__ \
1117 || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64 \
1118 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1119 || defined __aarch64__
1120 #define ECB_STDFP 1
1121 #include <string.h> /* for memcpy */
1122#else
1123 #define ECB_STDFP 0
1124#endif
1125
1126#ifndef ECB_NO_LIBM
1127
1128 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1129
1130 /* only the oldest of old doesn't have this one. solaris. */
1131 #ifdef INFINITY
1132 #define ECB_INFINITY INFINITY
1133 #else
1134 #define ECB_INFINITY HUGE_VAL
1135 #endif
1136
1137 #ifdef NAN
1138 #define ECB_NAN NAN
1139 #else
1140 #define ECB_NAN ECB_INFINITY
1141 #endif
1142
1143 /* converts an ieee half/binary16 to a float */
1144 ecb_function_ float ecb_binary16_to_float (uint16_t x) ecb_const;
1145 ecb_function_ float
1146 ecb_binary16_to_float (uint16_t x)
1147 {
1148 int e = (x >> 10) & 0x1f;
1149 int m = x & 0x3ff;
1150 float r;
1151
1152 if (!e ) r = ldexpf (m , -24);
1153 else if (e != 31) r = ldexpf (m + 0x400, e - 25);
1154 else if (m ) r = ECB_NAN;
1155 else r = ECB_INFINITY;
1156
1157 return x & 0x8000 ? -r : r;
1158 }
1159
1160 /* convert a float to ieee single/binary32 */
1161 ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const;
1162 ecb_function_ uint32_t
1163 ecb_float_to_binary32 (float x)
1164 {
1165 uint32_t r;
1166
1167 #if ECB_STDFP
1168 memcpy (&r, &x, 4);
1169 #else
1170 /* slow emulation, works for anything but -0 */
1171 uint32_t m;
1172 int e;
1173
1174 if (x == 0e0f ) return 0x00000000U;
1175 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1176 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1177 if (x != x ) return 0x7fbfffffU;
1178
1179 m = frexpf (x, &e) * 0x1000000U;
1180
1181 r = m & 0x80000000U;
1182
1183 if (r)
1184 m = -m;
1185
1186 if (e <= -126)
1187 {
1188 m &= 0xffffffU;
1189 m >>= (-125 - e);
1190 e = -126;
1191 }
1192
1193 r |= (e + 126) << 23;
1194 r |= m & 0x7fffffU;
1195 #endif
1196
1197 return r;
1198 }
1199
1200 /* converts an ieee single/binary32 to a float */
1201 ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const;
1202 ecb_function_ float
1203 ecb_binary32_to_float (uint32_t x)
1204 {
1205 float r;
1206
1207 #if ECB_STDFP
1208 memcpy (&r, &x, 4);
1209 #else
1210 /* emulation, only works for normals and subnormals and +0 */
1211 int neg = x >> 31;
1212 int e = (x >> 23) & 0xffU;
1213
1214 x &= 0x7fffffU;
1215
1216 if (e)
1217 x |= 0x800000U;
1218 else
1219 e = 1;
1220
1221 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1222 r = ldexpf (x * (0.5f / 0x800000U), e - 126);
1223
1224 r = neg ? -r : r;
1225 #endif
1226
1227 return r;
1228 }
1229
1230 /* convert a double to ieee double/binary64 */
1231 ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const;
1232 ecb_function_ uint64_t
1233 ecb_double_to_binary64 (double x)
1234 {
1235 uint64_t r;
1236
1237 #if ECB_STDFP
1238 memcpy (&r, &x, 8);
1239 #else
1240 /* slow emulation, works for anything but -0 */
1241 uint64_t m;
1242 int e;
1243
1244 if (x == 0e0 ) return 0x0000000000000000U;
1245 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1246 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1247 if (x != x ) return 0X7ff7ffffffffffffU;
1248
1249 m = frexp (x, &e) * 0x20000000000000U;
1250
1251 r = m & 0x8000000000000000;;
1252
1253 if (r)
1254 m = -m;
1255
1256 if (e <= -1022)
1257 {
1258 m &= 0x1fffffffffffffU;
1259 m >>= (-1021 - e);
1260 e = -1022;
1261 }
1262
1263 r |= ((uint64_t)(e + 1022)) << 52;
1264 r |= m & 0xfffffffffffffU;
1265 #endif
1266
1267 return r;
1268 }
1269
1270 /* converts an ieee double/binary64 to a double */
1271 ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const;
1272 ecb_function_ double
1273 ecb_binary64_to_double (uint64_t x)
1274 {
1275 double r;
1276
1277 #if ECB_STDFP
1278 memcpy (&r, &x, 8);
1279 #else
1280 /* emulation, only works for normals and subnormals and +0 */
1281 int neg = x >> 63;
1282 int e = (x >> 52) & 0x7ffU;
1283
1284 x &= 0xfffffffffffffU;
1285
1286 if (e)
1287 x |= 0x10000000000000U;
1288 else
1289 e = 1;
1290
1291 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1292 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1293
1294 r = neg ? -r : r;
1295 #endif
1296
1297 return r;
1298 }
1299
1300#endif
1301
1302#endif
1303
1304/* ECB.H END */
1305
1306#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1307/* if your architecture doesn't need memory fences, e.g. because it is
1308 * single-cpu/core, or if you use libev in a project that doesn't use libev
1309 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1310 * libev, in which cases the memory fences become nops.
1311 * alternatively, you can remove this #error and link against libpthread,
1312 * which will then provide the memory fences.
1313 */
1314# error "memory fences not defined for your architecture, please report"
1315#endif
1316
1317#ifndef ECB_MEMORY_FENCE
1318# define ECB_MEMORY_FENCE do { } while (0)
1319# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1320# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1321#endif
1322
1323#define expect_false(cond) ecb_expect_false (cond)
1324#define expect_true(cond) ecb_expect_true (cond)
1325#define noinline ecb_noinline
1326
480#define inline_size static inline 1327#define inline_size ecb_inline
481 1328
482#if EV_FEATURE_CODE 1329#if EV_FEATURE_CODE
483# define inline_speed static inline 1330# define inline_speed ecb_inline
484#else 1331#else
485# define inline_speed static noinline 1332# define inline_speed static noinline
486#endif 1333#endif
487 1334
488#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1335#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
… …
503#define ev_active(w) ((W)(w))->active 1350#define ev_active(w) ((W)(w))->active
504#define ev_at(w) ((WT)(w))->at 1351#define ev_at(w) ((WT)(w))->at
505 1352
506#if EV_USE_REALTIME 1353#if EV_USE_REALTIME
507/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1354/* sig_atomic_t is used to avoid per-thread variables or locking but still */
508/* giving it a reasonably high chance of working on typical architetcures */ 1355/* giving it a reasonably high chance of working on typical architectures */
509static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1356static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
510#endif 1357#endif
511 1358
512#if EV_USE_MONOTONIC 1359#if EV_USE_MONOTONIC
513static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1360static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
… …
527# include "ev_win32.c" 1374# include "ev_win32.c"
528#endif 1375#endif
529 1376
530/*****************************************************************************/ 1377/*****************************************************************************/
531 1378
1379/* define a suitable floor function (only used by periodics atm) */
1380
1381#if EV_USE_FLOOR
1382# include <math.h>
1383# define ev_floor(v) floor (v)
1384#else
1385
1386#include <float.h>
1387
1388/* a floor() replacement function, should be independent of ev_tstamp type */
1389static ev_tstamp noinline
1390ev_floor (ev_tstamp v)
1391{
1392 /* the choice of shift factor is not terribly important */
1393#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1394 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1395#else
1396 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1397#endif
1398
1399 /* argument too large for an unsigned long? */
1400 if (expect_false (v >= shift))
1401 {
1402 ev_tstamp f;
1403
1404 if (v == v - 1.)
1405 return v; /* very large number */
1406
1407 f = shift * ev_floor (v * (1. / shift));
1408 return f + ev_floor (v - f);
1409 }
1410
1411 /* special treatment for negative args? */
1412 if (expect_false (v < 0.))
1413 {
1414 ev_tstamp f = -ev_floor (-v);
1415
1416 return f - (f == v ? 0 : 1);
1417 }
1418
1419 /* fits into an unsigned long */
1420 return (unsigned long)v;
1421}
1422
1423#endif
1424
1425/*****************************************************************************/
1426
1427#ifdef __linux
1428# include <sys/utsname.h>
1429#endif
1430
1431static unsigned int noinline ecb_cold
1432ev_linux_version (void)
1433{
1434#ifdef __linux
1435 unsigned int v = 0;
1436 struct utsname buf;
1437 int i;
1438 char *p = buf.release;
1439
1440 if (uname (&buf))
1441 return 0;
1442
1443 for (i = 3+1; --i; )
1444 {
1445 unsigned int c = 0;
1446
1447 for (;;)
1448 {
1449 if (*p >= '0' && *p <= '9')
1450 c = c * 10 + *p++ - '0';
1451 else
1452 {
1453 p += *p == '.';
1454 break;
1455 }
1456 }
1457
1458 v = (v << 8) | c;
1459 }
1460
1461 return v;
1462#else
1463 return 0;
1464#endif
1465}
1466
1467/*****************************************************************************/
1468
532#if EV_AVOID_STDIO 1469#if EV_AVOID_STDIO
533static void noinline 1470static void noinline ecb_cold
534ev_printerr (const char *msg) 1471ev_printerr (const char *msg)
535{ 1472{
536 write (STDERR_FILENO, msg, strlen (msg)); 1473 write (STDERR_FILENO, msg, strlen (msg));
537} 1474}
538#endif 1475#endif
539 1476
540static void (*syserr_cb)(const char *msg); 1477static void (*syserr_cb)(const char *msg) EV_THROW;
541 1478
542void 1479void ecb_cold
543ev_set_syserr_cb (void (*cb)(const char *msg)) 1480ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
544{ 1481{
545 syserr_cb = cb; 1482 syserr_cb = cb;
546} 1483}
547 1484
548static void noinline 1485static void noinline ecb_cold
549ev_syserr (const char *msg) 1486ev_syserr (const char *msg)
550{ 1487{
551 if (!msg) 1488 if (!msg)
552 msg = "(libev) system error"; 1489 msg = "(libev) system error";
553 1490
554 if (syserr_cb) 1491 if (syserr_cb)
555 syserr_cb (msg); 1492 syserr_cb (msg);
556 else 1493 else
557 { 1494 {
558#if EV_AVOID_STDIO 1495#if EV_AVOID_STDIO
559 const char *err = strerror (errno);
560
561 ev_printerr (msg); 1496 ev_printerr (msg);
562 ev_printerr (": "); 1497 ev_printerr (": ");
563 ev_printerr (err); 1498 ev_printerr (strerror (errno));
564 ev_printerr ("\n"); 1499 ev_printerr ("\n");
565#else 1500#else
566 perror (msg); 1501 perror (msg);
567#endif 1502#endif
568 abort (); 1503 abort ();
569 } 1504 }
570} 1505}
571 1506
572static void * 1507static void *
573ev_realloc_emul (void *ptr, long size) 1508ev_realloc_emul (void *ptr, long size) EV_THROW
574{ 1509{
575#if __GLIBC__
576 return realloc (ptr, size);
577#else
578 /* some systems, notably openbsd and darwin, fail to properly 1510 /* some systems, notably openbsd and darwin, fail to properly
579 * implement realloc (x, 0) (as required by both ansi c-89 and 1511 * implement realloc (x, 0) (as required by both ansi c-89 and
580 * the single unix specification, so work around them here. 1512 * the single unix specification, so work around them here.
1513 * recently, also (at least) fedora and debian started breaking it,
1514 * despite documenting it otherwise.
581 */ 1515 */
582 1516
583 if (size) 1517 if (size)
584 return realloc (ptr, size); 1518 return realloc (ptr, size);
585 1519
586 free (ptr); 1520 free (ptr);
587 return 0; 1521 return 0;
588#endif
589} 1522}
590 1523
591static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1524static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
592 1525
593void 1526void ecb_cold
594ev_set_allocator (void *(*cb)(void *ptr, long size)) 1527ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
595{ 1528{
596 alloc = cb; 1529 alloc = cb;
597} 1530}
598 1531
599inline_speed void * 1532inline_speed void *
… …
602 ptr = alloc (ptr, size); 1535 ptr = alloc (ptr, size);
603 1536
604 if (!ptr && size) 1537 if (!ptr && size)
605 { 1538 {
606#if EV_AVOID_STDIO 1539#if EV_AVOID_STDIO
607 ev_printerr ("libev: memory allocation failed, aborting.\n"); 1540 ev_printerr ("(libev) memory allocation failed, aborting.\n");
608#else 1541#else
609 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1542 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
610#endif 1543#endif
611 abort (); 1544 abort ();
612 } 1545 }
613 1546
614 return ptr; 1547 return ptr;
… …
631 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1564 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
632 unsigned char unused; 1565 unsigned char unused;
633#if EV_USE_EPOLL 1566#if EV_USE_EPOLL
634 unsigned int egen; /* generation counter to counter epoll bugs */ 1567 unsigned int egen; /* generation counter to counter epoll bugs */
635#endif 1568#endif
636#if EV_SELECT_IS_WINSOCKET 1569#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
637 SOCKET handle; 1570 SOCKET handle;
1571#endif
1572#if EV_USE_IOCP
1573 OVERLAPPED or, ow;
638#endif 1574#endif
639} ANFD; 1575} ANFD;
640 1576
641/* stores the pending event set for a given watcher */ 1577/* stores the pending event set for a given watcher */
642typedef struct 1578typedef struct
… …
684 #undef VAR 1620 #undef VAR
685 }; 1621 };
686 #include "ev_wrap.h" 1622 #include "ev_wrap.h"
687 1623
688 static struct ev_loop default_loop_struct; 1624 static struct ev_loop default_loop_struct;
689 struct ev_loop *ev_default_loop_ptr; 1625 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
690 1626
691#else 1627#else
692 1628
693 ev_tstamp ev_rt_now; 1629 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
694 #define VAR(name,decl) static decl; 1630 #define VAR(name,decl) static decl;
695 #include "ev_vars.h" 1631 #include "ev_vars.h"
696 #undef VAR 1632 #undef VAR
697 1633
698 static int ev_default_loop_ptr; 1634 static int ev_default_loop_ptr;
… …
707# define EV_RELEASE_CB (void)0 1643# define EV_RELEASE_CB (void)0
708# define EV_ACQUIRE_CB (void)0 1644# define EV_ACQUIRE_CB (void)0
709# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1645# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
710#endif 1646#endif
711 1647
712#define EVUNLOOP_RECURSE 0x80 1648#define EVBREAK_RECURSE 0x80
713 1649
714/*****************************************************************************/ 1650/*****************************************************************************/
715 1651
716#ifndef EV_HAVE_EV_TIME 1652#ifndef EV_HAVE_EV_TIME
717ev_tstamp 1653ev_tstamp
718ev_time (void) 1654ev_time (void) EV_THROW
719{ 1655{
720#if EV_USE_REALTIME 1656#if EV_USE_REALTIME
721 if (expect_true (have_realtime)) 1657 if (expect_true (have_realtime))
722 { 1658 {
723 struct timespec ts; 1659 struct timespec ts;
… …
747 return ev_time (); 1683 return ev_time ();
748} 1684}
749 1685
750#if EV_MULTIPLICITY 1686#if EV_MULTIPLICITY
751ev_tstamp 1687ev_tstamp
752ev_now (EV_P) 1688ev_now (EV_P) EV_THROW
753{ 1689{
754 return ev_rt_now; 1690 return ev_rt_now;
755} 1691}
756#endif 1692#endif
757 1693
758void 1694void
759ev_sleep (ev_tstamp delay) 1695ev_sleep (ev_tstamp delay) EV_THROW
760{ 1696{
761 if (delay > 0.) 1697 if (delay > 0.)
762 { 1698 {
763#if EV_USE_NANOSLEEP 1699#if EV_USE_NANOSLEEP
764 struct timespec ts; 1700 struct timespec ts;
765 1701
766 ts.tv_sec = (time_t)delay; 1702 EV_TS_SET (ts, delay);
767 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
768
769 nanosleep (&ts, 0); 1703 nanosleep (&ts, 0);
770#elif defined(_WIN32) 1704#elif defined _WIN32
771 Sleep ((unsigned long)(delay * 1e3)); 1705 Sleep ((unsigned long)(delay * 1e3));
772#else 1706#else
773 struct timeval tv; 1707 struct timeval tv;
774 1708
775 tv.tv_sec = (time_t)delay;
776 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
777
778 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1709 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
779 /* something not guaranteed by newer posix versions, but guaranteed */ 1710 /* something not guaranteed by newer posix versions, but guaranteed */
780 /* by older ones */ 1711 /* by older ones */
1712 EV_TV_SET (tv, delay);
781 select (0, 0, 0, 0, &tv); 1713 select (0, 0, 0, 0, &tv);
782#endif 1714#endif
783 } 1715 }
784} 1716}
785 1717
786/*****************************************************************************/ 1718/*****************************************************************************/
787 1719
788#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1720#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
789 1721
790/* find a suitable new size for the given array, */ 1722/* find a suitable new size for the given array, */
791/* hopefully by rounding to a ncie-to-malloc size */ 1723/* hopefully by rounding to a nice-to-malloc size */
792inline_size int 1724inline_size int
793array_nextsize (int elem, int cur, int cnt) 1725array_nextsize (int elem, int cur, int cnt)
794{ 1726{
795 int ncur = cur + 1; 1727 int ncur = cur + 1;
796 1728
797 do 1729 do
798 ncur <<= 1; 1730 ncur <<= 1;
799 while (cnt > ncur); 1731 while (cnt > ncur);
800 1732
801 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1733 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
802 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1734 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
803 { 1735 {
804 ncur *= elem; 1736 ncur *= elem;
805 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1737 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
806 ncur = ncur - sizeof (void *) * 4; 1738 ncur = ncur - sizeof (void *) * 4;
… …
808 } 1740 }
809 1741
810 return ncur; 1742 return ncur;
811} 1743}
812 1744
813static noinline void * 1745static void * noinline ecb_cold
814array_realloc (int elem, void *base, int *cur, int cnt) 1746array_realloc (int elem, void *base, int *cur, int cnt)
815{ 1747{
816 *cur = array_nextsize (elem, *cur, cnt); 1748 *cur = array_nextsize (elem, *cur, cnt);
817 return ev_realloc (base, elem * *cur); 1749 return ev_realloc (base, elem * *cur);
818} 1750}
… …
821 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1753 memset ((void *)(base), 0, sizeof (*(base)) * (count))
822 1754
823#define array_needsize(type,base,cur,cnt,init) \ 1755#define array_needsize(type,base,cur,cnt,init) \
824 if (expect_false ((cnt) > (cur))) \ 1756 if (expect_false ((cnt) > (cur))) \
825 { \ 1757 { \
826 int ocur_ = (cur); \ 1758 int ecb_unused ocur_ = (cur); \
827 (base) = (type *)array_realloc \ 1759 (base) = (type *)array_realloc \
828 (sizeof (type), (base), &(cur), (cnt)); \ 1760 (sizeof (type), (base), &(cur), (cnt)); \
829 init ((base) + (ocur_), (cur) - ocur_); \ 1761 init ((base) + (ocur_), (cur) - ocur_); \
830 } 1762 }
831 1763
… …
849pendingcb (EV_P_ ev_prepare *w, int revents) 1781pendingcb (EV_P_ ev_prepare *w, int revents)
850{ 1782{
851} 1783}
852 1784
853void noinline 1785void noinline
854ev_feed_event (EV_P_ void *w, int revents) 1786ev_feed_event (EV_P_ void *w, int revents) EV_THROW
855{ 1787{
856 W w_ = (W)w; 1788 W w_ = (W)w;
857 int pri = ABSPRI (w_); 1789 int pri = ABSPRI (w_);
858 1790
859 if (expect_false (w_->pending)) 1791 if (expect_false (w_->pending))
… …
863 w_->pending = ++pendingcnt [pri]; 1795 w_->pending = ++pendingcnt [pri];
864 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1796 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
865 pendings [pri][w_->pending - 1].w = w_; 1797 pendings [pri][w_->pending - 1].w = w_;
866 pendings [pri][w_->pending - 1].events = revents; 1798 pendings [pri][w_->pending - 1].events = revents;
867 } 1799 }
1800
1801 pendingpri = NUMPRI - 1;
868} 1802}
869 1803
870inline_speed void 1804inline_speed void
871feed_reverse (EV_P_ W w) 1805feed_reverse (EV_P_ W w)
872{ 1806{
… …
918 if (expect_true (!anfd->reify)) 1852 if (expect_true (!anfd->reify))
919 fd_event_nocheck (EV_A_ fd, revents); 1853 fd_event_nocheck (EV_A_ fd, revents);
920} 1854}
921 1855
922void 1856void
923ev_feed_fd_event (EV_P_ int fd, int revents) 1857ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
924{ 1858{
925 if (fd >= 0 && fd < anfdmax) 1859 if (fd >= 0 && fd < anfdmax)
926 fd_event_nocheck (EV_A_ fd, revents); 1860 fd_event_nocheck (EV_A_ fd, revents);
927} 1861}
928 1862
… …
931inline_size void 1865inline_size void
932fd_reify (EV_P) 1866fd_reify (EV_P)
933{ 1867{
934 int i; 1868 int i;
935 1869
1870#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1871 for (i = 0; i < fdchangecnt; ++i)
1872 {
1873 int fd = fdchanges [i];
1874 ANFD *anfd = anfds + fd;
1875
1876 if (anfd->reify & EV__IOFDSET && anfd->head)
1877 {
1878 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1879
1880 if (handle != anfd->handle)
1881 {
1882 unsigned long arg;
1883
1884 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1885
1886 /* handle changed, but fd didn't - we need to do it in two steps */
1887 backend_modify (EV_A_ fd, anfd->events, 0);
1888 anfd->events = 0;
1889 anfd->handle = handle;
1890 }
1891 }
1892 }
1893#endif
1894
936 for (i = 0; i < fdchangecnt; ++i) 1895 for (i = 0; i < fdchangecnt; ++i)
937 { 1896 {
938 int fd = fdchanges [i]; 1897 int fd = fdchanges [i];
939 ANFD *anfd = anfds + fd; 1898 ANFD *anfd = anfds + fd;
940 ev_io *w; 1899 ev_io *w;
941 1900
942 unsigned char events = 0; 1901 unsigned char o_events = anfd->events;
1902 unsigned char o_reify = anfd->reify;
943 1903
944 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1904 anfd->reify = 0;
945 events |= (unsigned char)w->events;
946 1905
947#if EV_SELECT_IS_WINSOCKET 1906 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
948 if (events)
949 { 1907 {
950 unsigned long arg; 1908 anfd->events = 0;
951 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1909
952 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1910 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1911 anfd->events |= (unsigned char)w->events;
1912
1913 if (o_events != anfd->events)
1914 o_reify = EV__IOFDSET; /* actually |= */
953 } 1915 }
954#endif
955 1916
956 { 1917 if (o_reify & EV__IOFDSET)
957 unsigned char o_events = anfd->events;
958 unsigned char o_reify = anfd->reify;
959
960 anfd->reify = 0;
961 anfd->events = events;
962
963 if (o_events != events || o_reify & EV__IOFDSET)
964 backend_modify (EV_A_ fd, o_events, events); 1918 backend_modify (EV_A_ fd, o_events, anfd->events);
965 }
966 } 1919 }
967 1920
968 fdchangecnt = 0; 1921 fdchangecnt = 0;
969} 1922}
970 1923
… …
982 fdchanges [fdchangecnt - 1] = fd; 1935 fdchanges [fdchangecnt - 1] = fd;
983 } 1936 }
984} 1937}
985 1938
986/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1939/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
987inline_speed void 1940inline_speed void ecb_cold
988fd_kill (EV_P_ int fd) 1941fd_kill (EV_P_ int fd)
989{ 1942{
990 ev_io *w; 1943 ev_io *w;
991 1944
992 while ((w = (ev_io *)anfds [fd].head)) 1945 while ((w = (ev_io *)anfds [fd].head))
… …
995 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1948 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
996 } 1949 }
997} 1950}
998 1951
999/* check whether the given fd is actually valid, for error recovery */ 1952/* check whether the given fd is actually valid, for error recovery */
1000inline_size int 1953inline_size int ecb_cold
1001fd_valid (int fd) 1954fd_valid (int fd)
1002{ 1955{
1003#ifdef _WIN32 1956#ifdef _WIN32
1004 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 1957 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1005#else 1958#else
1006 return fcntl (fd, F_GETFD) != -1; 1959 return fcntl (fd, F_GETFD) != -1;
1007#endif 1960#endif
1008} 1961}
1009 1962
1010/* called on EBADF to verify fds */ 1963/* called on EBADF to verify fds */
1011static void noinline 1964static void noinline ecb_cold
1012fd_ebadf (EV_P) 1965fd_ebadf (EV_P)
1013{ 1966{
1014 int fd; 1967 int fd;
1015 1968
1016 for (fd = 0; fd < anfdmax; ++fd) 1969 for (fd = 0; fd < anfdmax; ++fd)
… …
1018 if (!fd_valid (fd) && errno == EBADF) 1971 if (!fd_valid (fd) && errno == EBADF)
1019 fd_kill (EV_A_ fd); 1972 fd_kill (EV_A_ fd);
1020} 1973}
1021 1974
1022/* called on ENOMEM in select/poll to kill some fds and retry */ 1975/* called on ENOMEM in select/poll to kill some fds and retry */
1023static void noinline 1976static void noinline ecb_cold
1024fd_enomem (EV_P) 1977fd_enomem (EV_P)
1025{ 1978{
1026 int fd; 1979 int fd;
1027 1980
1028 for (fd = anfdmax; fd--; ) 1981 for (fd = anfdmax; fd--; )
… …
1063} 2016}
1064 2017
1065/*****************************************************************************/ 2018/*****************************************************************************/
1066 2019
1067/* 2020/*
1068 * the heap functions want a real array index. array index 0 uis guaranteed to not 2021 * the heap functions want a real array index. array index 0 is guaranteed to not
1069 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 2022 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1070 * the branching factor of the d-tree. 2023 * the branching factor of the d-tree.
1071 */ 2024 */
1072 2025
1073/* 2026/*
… …
1223 2176
1224/*****************************************************************************/ 2177/*****************************************************************************/
1225 2178
1226#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2179#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1227 2180
1228static void noinline 2181static void noinline ecb_cold
1229evpipe_init (EV_P) 2182evpipe_init (EV_P)
1230{ 2183{
1231 if (!ev_is_active (&pipe_w)) 2184 if (!ev_is_active (&pipe_w))
1232 { 2185 {
2186 int fds [2];
2187
1233# if EV_USE_EVENTFD 2188# if EV_USE_EVENTFD
2189 fds [0] = -1;
1234 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2190 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1235 if (evfd < 0 && errno == EINVAL) 2191 if (fds [1] < 0 && errno == EINVAL)
1236 evfd = eventfd (0, 0); 2192 fds [1] = eventfd (0, 0);
1237 2193
1238 if (evfd >= 0) 2194 if (fds [1] < 0)
2195# endif
1239 { 2196 {
2197 while (pipe (fds))
2198 ev_syserr ("(libev) error creating signal/async pipe");
2199
2200 fd_intern (fds [0]);
2201 }
2202
1240 evpipe [0] = -1; 2203 evpipe [0] = fds [0];
1241 fd_intern (evfd); /* doing it twice doesn't hurt */ 2204
1242 ev_io_set (&pipe_w, evfd, EV_READ); 2205 if (evpipe [1] < 0)
2206 evpipe [1] = fds [1]; /* first call, set write fd */
2207 else
2208 {
2209 /* on subsequent calls, do not change evpipe [1] */
2210 /* so that evpipe_write can always rely on its value. */
2211 /* this branch does not do anything sensible on windows, */
2212 /* so must not be executed on windows */
2213
2214 dup2 (fds [1], evpipe [1]);
2215 close (fds [1]);
2216 }
2217
2218 fd_intern (evpipe [1]);
2219
2220 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2221 ev_io_start (EV_A_ &pipe_w);
2222 ev_unref (EV_A); /* watcher should not keep loop alive */
2223 }
2224}
2225
2226inline_speed void
2227evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2228{
2229 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2230
2231 if (expect_true (*flag))
2232 return;
2233
2234 *flag = 1;
2235 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2236
2237 pipe_write_skipped = 1;
2238
2239 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2240
2241 if (pipe_write_wanted)
2242 {
2243 int old_errno;
2244
2245 pipe_write_skipped = 0;
2246 ECB_MEMORY_FENCE_RELEASE;
2247
2248 old_errno = errno; /* save errno because write will clobber it */
2249
2250#if EV_USE_EVENTFD
2251 if (evpipe [0] < 0)
2252 {
2253 uint64_t counter = 1;
2254 write (evpipe [1], &counter, sizeof (uint64_t));
1243 } 2255 }
1244 else 2256 else
1245# endif 2257#endif
1246 { 2258 {
1247 while (pipe (evpipe)) 2259#ifdef _WIN32
1248 ev_syserr ("(libev) error creating signal/async pipe"); 2260 WSABUF buf;
1249 2261 DWORD sent;
1250 fd_intern (evpipe [0]); 2262 buf.buf = &buf;
1251 fd_intern (evpipe [1]); 2263 buf.len = 1;
1252 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2264 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2265#else
2266 write (evpipe [1], &(evpipe [1]), 1);
2267#endif
1253 } 2268 }
1254
1255 ev_io_start (EV_A_ &pipe_w);
1256 ev_unref (EV_A); /* watcher should not keep loop alive */
1257 }
1258}
1259
1260inline_size void
1261evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1262{
1263 if (!*flag)
1264 {
1265 int old_errno = errno; /* save errno because write might clobber it */
1266 char dummy;
1267
1268 *flag = 1;
1269
1270#if EV_USE_EVENTFD
1271 if (evfd >= 0)
1272 {
1273 uint64_t counter = 1;
1274 write (evfd, &counter, sizeof (uint64_t));
1275 }
1276 else
1277#endif
1278 write (evpipe [1], &dummy, 1);
1279 2269
1280 errno = old_errno; 2270 errno = old_errno;
1281 } 2271 }
1282} 2272}
1283 2273
… …
1286static void 2276static void
1287pipecb (EV_P_ ev_io *iow, int revents) 2277pipecb (EV_P_ ev_io *iow, int revents)
1288{ 2278{
1289 int i; 2279 int i;
1290 2280
2281 if (revents & EV_READ)
2282 {
1291#if EV_USE_EVENTFD 2283#if EV_USE_EVENTFD
1292 if (evfd >= 0) 2284 if (evpipe [0] < 0)
1293 { 2285 {
1294 uint64_t counter; 2286 uint64_t counter;
1295 read (evfd, &counter, sizeof (uint64_t)); 2287 read (evpipe [1], &counter, sizeof (uint64_t));
1296 } 2288 }
1297 else 2289 else
1298#endif 2290#endif
1299 { 2291 {
1300 char dummy; 2292 char dummy[4];
2293#ifdef _WIN32
2294 WSABUF buf;
2295 DWORD recvd;
2296 DWORD flags = 0;
2297 buf.buf = dummy;
2298 buf.len = sizeof (dummy);
2299 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2300#else
1301 read (evpipe [0], &dummy, 1); 2301 read (evpipe [0], &dummy, sizeof (dummy));
2302#endif
2303 }
1302 } 2304 }
1303 2305
2306 pipe_write_skipped = 0;
2307
2308 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2309
2310#if EV_SIGNAL_ENABLE
1304 if (sig_pending) 2311 if (sig_pending)
1305 { 2312 {
1306 sig_pending = 0; 2313 sig_pending = 0;
2314
2315 ECB_MEMORY_FENCE;
1307 2316
1308 for (i = EV_NSIG - 1; i--; ) 2317 for (i = EV_NSIG - 1; i--; )
1309 if (expect_false (signals [i].pending)) 2318 if (expect_false (signals [i].pending))
1310 ev_feed_signal_event (EV_A_ i + 1); 2319 ev_feed_signal_event (EV_A_ i + 1);
1311 } 2320 }
2321#endif
1312 2322
1313#if EV_ASYNC_ENABLE 2323#if EV_ASYNC_ENABLE
1314 if (async_pending) 2324 if (async_pending)
1315 { 2325 {
1316 async_pending = 0; 2326 async_pending = 0;
2327
2328 ECB_MEMORY_FENCE;
1317 2329
1318 for (i = asynccnt; i--; ) 2330 for (i = asynccnt; i--; )
1319 if (asyncs [i]->sent) 2331 if (asyncs [i]->sent)
1320 { 2332 {
1321 asyncs [i]->sent = 0; 2333 asyncs [i]->sent = 0;
2334 ECB_MEMORY_FENCE_RELEASE;
1322 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2335 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1323 } 2336 }
1324 } 2337 }
1325#endif 2338#endif
1326} 2339}
1327 2340
1328/*****************************************************************************/ 2341/*****************************************************************************/
1329 2342
2343void
2344ev_feed_signal (int signum) EV_THROW
2345{
2346#if EV_MULTIPLICITY
2347 EV_P;
2348 ECB_MEMORY_FENCE_ACQUIRE;
2349 EV_A = signals [signum - 1].loop;
2350
2351 if (!EV_A)
2352 return;
2353#endif
2354
2355 signals [signum - 1].pending = 1;
2356 evpipe_write (EV_A_ &sig_pending);
2357}
2358
1330static void 2359static void
1331ev_sighandler (int signum) 2360ev_sighandler (int signum)
1332{ 2361{
1333#if EV_MULTIPLICITY
1334 EV_P = signals [signum - 1].loop;
1335#endif
1336
1337#ifdef _WIN32 2362#ifdef _WIN32
1338 signal (signum, ev_sighandler); 2363 signal (signum, ev_sighandler);
1339#endif 2364#endif
1340 2365
1341 signals [signum - 1].pending = 1; 2366 ev_feed_signal (signum);
1342 evpipe_write (EV_A_ &sig_pending);
1343} 2367}
1344 2368
1345void noinline 2369void noinline
1346ev_feed_signal_event (EV_P_ int signum) 2370ev_feed_signal_event (EV_P_ int signum) EV_THROW
1347{ 2371{
1348 WL w; 2372 WL w;
1349 2373
1350 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2374 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1351 return; 2375 return;
1352 2376
1353 --signum; 2377 --signum;
1354 2378
1355#if EV_MULTIPLICITY 2379#if EV_MULTIPLICITY
… …
1359 if (expect_false (signals [signum].loop != EV_A)) 2383 if (expect_false (signals [signum].loop != EV_A))
1360 return; 2384 return;
1361#endif 2385#endif
1362 2386
1363 signals [signum].pending = 0; 2387 signals [signum].pending = 0;
2388 ECB_MEMORY_FENCE_RELEASE;
1364 2389
1365 for (w = signals [signum].head; w; w = w->next) 2390 for (w = signals [signum].head; w; w = w->next)
1366 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2391 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1367} 2392}
1368 2393
… …
1447 2472
1448#endif 2473#endif
1449 2474
1450/*****************************************************************************/ 2475/*****************************************************************************/
1451 2476
2477#if EV_USE_IOCP
2478# include "ev_iocp.c"
2479#endif
1452#if EV_USE_PORT 2480#if EV_USE_PORT
1453# include "ev_port.c" 2481# include "ev_port.c"
1454#endif 2482#endif
1455#if EV_USE_KQUEUE 2483#if EV_USE_KQUEUE
1456# include "ev_kqueue.c" 2484# include "ev_kqueue.c"
… …
1463#endif 2491#endif
1464#if EV_USE_SELECT 2492#if EV_USE_SELECT
1465# include "ev_select.c" 2493# include "ev_select.c"
1466#endif 2494#endif
1467 2495
1468int 2496int ecb_cold
1469ev_version_major (void) 2497ev_version_major (void) EV_THROW
1470{ 2498{
1471 return EV_VERSION_MAJOR; 2499 return EV_VERSION_MAJOR;
1472} 2500}
1473 2501
1474int 2502int ecb_cold
1475ev_version_minor (void) 2503ev_version_minor (void) EV_THROW
1476{ 2504{
1477 return EV_VERSION_MINOR; 2505 return EV_VERSION_MINOR;
1478} 2506}
1479 2507
1480/* return true if we are running with elevated privileges and should ignore env variables */ 2508/* return true if we are running with elevated privileges and should ignore env variables */
1481int inline_size 2509int inline_size ecb_cold
1482enable_secure (void) 2510enable_secure (void)
1483{ 2511{
1484#ifdef _WIN32 2512#ifdef _WIN32
1485 return 0; 2513 return 0;
1486#else 2514#else
1487 return getuid () != geteuid () 2515 return getuid () != geteuid ()
1488 || getgid () != getegid (); 2516 || getgid () != getegid ();
1489#endif 2517#endif
1490} 2518}
1491 2519
1492unsigned int 2520unsigned int ecb_cold
1493ev_supported_backends (void) 2521ev_supported_backends (void) EV_THROW
1494{ 2522{
1495 unsigned int flags = 0; 2523 unsigned int flags = 0;
1496 2524
1497 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2525 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1498 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2526 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1501 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2529 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1502 2530
1503 return flags; 2531 return flags;
1504} 2532}
1505 2533
1506unsigned int 2534unsigned int ecb_cold
1507ev_recommended_backends (void) 2535ev_recommended_backends (void) EV_THROW
1508{ 2536{
1509 unsigned int flags = ev_supported_backends (); 2537 unsigned int flags = ev_supported_backends ();
1510 2538
1511#ifndef __NetBSD__ 2539#ifndef __NetBSD__
1512 /* kqueue is borked on everything but netbsd apparently */ 2540 /* kqueue is borked on everything but netbsd apparently */
… …
1523#endif 2551#endif
1524 2552
1525 return flags; 2553 return flags;
1526} 2554}
1527 2555
2556unsigned int ecb_cold
2557ev_embeddable_backends (void) EV_THROW
2558{
2559 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2560
2561 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2562 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2563 flags &= ~EVBACKEND_EPOLL;
2564
2565 return flags;
2566}
2567
1528unsigned int 2568unsigned int
1529ev_embeddable_backends (void)
1530{
1531 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1532
1533 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1534 /* please fix it and tell me how to detect the fix */
1535 flags &= ~EVBACKEND_EPOLL;
1536
1537 return flags;
1538}
1539
1540unsigned int
1541ev_backend (EV_P) 2569ev_backend (EV_P) EV_THROW
1542{ 2570{
1543 return backend; 2571 return backend;
1544} 2572}
1545 2573
1546#if EV_FEATURE_API 2574#if EV_FEATURE_API
1547unsigned int 2575unsigned int
1548ev_iteration (EV_P) 2576ev_iteration (EV_P) EV_THROW
1549{ 2577{
1550 return loop_count; 2578 return loop_count;
1551} 2579}
1552 2580
1553unsigned int 2581unsigned int
1554ev_depth (EV_P) 2582ev_depth (EV_P) EV_THROW
1555{ 2583{
1556 return loop_depth; 2584 return loop_depth;
1557} 2585}
1558 2586
1559void 2587void
1560ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2588ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1561{ 2589{
1562 io_blocktime = interval; 2590 io_blocktime = interval;
1563} 2591}
1564 2592
1565void 2593void
1566ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2594ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1567{ 2595{
1568 timeout_blocktime = interval; 2596 timeout_blocktime = interval;
1569} 2597}
1570 2598
1571void 2599void
1572ev_set_userdata (EV_P_ void *data) 2600ev_set_userdata (EV_P_ void *data) EV_THROW
1573{ 2601{
1574 userdata = data; 2602 userdata = data;
1575} 2603}
1576 2604
1577void * 2605void *
1578ev_userdata (EV_P) 2606ev_userdata (EV_P) EV_THROW
1579{ 2607{
1580 return userdata; 2608 return userdata;
1581} 2609}
1582 2610
2611void
1583void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2612ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW
1584{ 2613{
1585 invoke_cb = invoke_pending_cb; 2614 invoke_cb = invoke_pending_cb;
1586} 2615}
1587 2616
1588void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2617void
2618ev_set_loop_release_cb (EV_P_ ev_loop_callback release EV_THROW, ev_loop_callback acquire EV_THROW) EV_THROW
1589{ 2619{
1590 release_cb = release; 2620 release_cb = release;
1591 acquire_cb = acquire; 2621 acquire_cb = acquire;
1592} 2622}
1593#endif 2623#endif
1594 2624
1595/* initialise a loop structure, must be zero-initialised */ 2625/* initialise a loop structure, must be zero-initialised */
1596static void noinline 2626static void noinline ecb_cold
1597loop_init (EV_P_ unsigned int flags) 2627loop_init (EV_P_ unsigned int flags) EV_THROW
1598{ 2628{
1599 if (!backend) 2629 if (!backend)
1600 { 2630 {
2631 origflags = flags;
2632
1601#if EV_USE_REALTIME 2633#if EV_USE_REALTIME
1602 if (!have_realtime) 2634 if (!have_realtime)
1603 { 2635 {
1604 struct timespec ts; 2636 struct timespec ts;
1605 2637
… …
1627 if (!(flags & EVFLAG_NOENV) 2659 if (!(flags & EVFLAG_NOENV)
1628 && !enable_secure () 2660 && !enable_secure ()
1629 && getenv ("LIBEV_FLAGS")) 2661 && getenv ("LIBEV_FLAGS"))
1630 flags = atoi (getenv ("LIBEV_FLAGS")); 2662 flags = atoi (getenv ("LIBEV_FLAGS"));
1631 2663
1632 ev_rt_now = ev_time (); 2664 ev_rt_now = ev_time ();
1633 mn_now = get_clock (); 2665 mn_now = get_clock ();
1634 now_floor = mn_now; 2666 now_floor = mn_now;
1635 rtmn_diff = ev_rt_now - mn_now; 2667 rtmn_diff = ev_rt_now - mn_now;
1636#if EV_FEATURE_API 2668#if EV_FEATURE_API
1637 invoke_cb = ev_invoke_pending; 2669 invoke_cb = ev_invoke_pending;
1638#endif 2670#endif
1639 2671
1640 io_blocktime = 0.; 2672 io_blocktime = 0.;
1641 timeout_blocktime = 0.; 2673 timeout_blocktime = 0.;
1642 backend = 0; 2674 backend = 0;
1643 backend_fd = -1; 2675 backend_fd = -1;
1644 sig_pending = 0; 2676 sig_pending = 0;
1645#if EV_ASYNC_ENABLE 2677#if EV_ASYNC_ENABLE
1646 async_pending = 0; 2678 async_pending = 0;
1647#endif 2679#endif
2680 pipe_write_skipped = 0;
2681 pipe_write_wanted = 0;
2682 evpipe [0] = -1;
2683 evpipe [1] = -1;
1648#if EV_USE_INOTIFY 2684#if EV_USE_INOTIFY
1649 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2685 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1650#endif 2686#endif
1651#if EV_USE_SIGNALFD 2687#if EV_USE_SIGNALFD
1652 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2688 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1653#endif 2689#endif
1654 2690
1655 if (!(flags & 0x0000ffffU)) 2691 if (!(flags & EVBACKEND_MASK))
1656 flags |= ev_recommended_backends (); 2692 flags |= ev_recommended_backends ();
1657 2693
2694#if EV_USE_IOCP
2695 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2696#endif
1658#if EV_USE_PORT 2697#if EV_USE_PORT
1659 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2698 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1660#endif 2699#endif
1661#if EV_USE_KQUEUE 2700#if EV_USE_KQUEUE
1662 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2701 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1679#endif 2718#endif
1680 } 2719 }
1681} 2720}
1682 2721
1683/* free up a loop structure */ 2722/* free up a loop structure */
1684static void noinline 2723void ecb_cold
1685loop_destroy (EV_P) 2724ev_loop_destroy (EV_P)
1686{ 2725{
1687 int i; 2726 int i;
2727
2728#if EV_MULTIPLICITY
2729 /* mimic free (0) */
2730 if (!EV_A)
2731 return;
2732#endif
2733
2734#if EV_CLEANUP_ENABLE
2735 /* queue cleanup watchers (and execute them) */
2736 if (expect_false (cleanupcnt))
2737 {
2738 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2739 EV_INVOKE_PENDING;
2740 }
2741#endif
2742
2743#if EV_CHILD_ENABLE
2744 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2745 {
2746 ev_ref (EV_A); /* child watcher */
2747 ev_signal_stop (EV_A_ &childev);
2748 }
2749#endif
1688 2750
1689 if (ev_is_active (&pipe_w)) 2751 if (ev_is_active (&pipe_w))
1690 { 2752 {
1691 /*ev_ref (EV_A);*/ 2753 /*ev_ref (EV_A);*/
1692 /*ev_io_stop (EV_A_ &pipe_w);*/ 2754 /*ev_io_stop (EV_A_ &pipe_w);*/
1693 2755
1694#if EV_USE_EVENTFD
1695 if (evfd >= 0)
1696 close (evfd);
1697#endif
1698
1699 if (evpipe [0] >= 0)
1700 {
1701 EV_WIN32_CLOSE_FD (evpipe [0]); 2756 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1702 EV_WIN32_CLOSE_FD (evpipe [1]); 2757 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1703 }
1704 } 2758 }
1705 2759
1706#if EV_USE_SIGNALFD 2760#if EV_USE_SIGNALFD
1707 if (ev_is_active (&sigfd_w)) 2761 if (ev_is_active (&sigfd_w))
1708 close (sigfd); 2762 close (sigfd);
… …
1714#endif 2768#endif
1715 2769
1716 if (backend_fd >= 0) 2770 if (backend_fd >= 0)
1717 close (backend_fd); 2771 close (backend_fd);
1718 2772
2773#if EV_USE_IOCP
2774 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2775#endif
1719#if EV_USE_PORT 2776#if EV_USE_PORT
1720 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2777 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1721#endif 2778#endif
1722#if EV_USE_KQUEUE 2779#if EV_USE_KQUEUE
1723 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2780 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1750 array_free (periodic, EMPTY); 2807 array_free (periodic, EMPTY);
1751#endif 2808#endif
1752#if EV_FORK_ENABLE 2809#if EV_FORK_ENABLE
1753 array_free (fork, EMPTY); 2810 array_free (fork, EMPTY);
1754#endif 2811#endif
2812#if EV_CLEANUP_ENABLE
2813 array_free (cleanup, EMPTY);
2814#endif
1755 array_free (prepare, EMPTY); 2815 array_free (prepare, EMPTY);
1756 array_free (check, EMPTY); 2816 array_free (check, EMPTY);
1757#if EV_ASYNC_ENABLE 2817#if EV_ASYNC_ENABLE
1758 array_free (async, EMPTY); 2818 array_free (async, EMPTY);
1759#endif 2819#endif
1760 2820
1761 backend = 0; 2821 backend = 0;
2822
2823#if EV_MULTIPLICITY
2824 if (ev_is_default_loop (EV_A))
2825#endif
2826 ev_default_loop_ptr = 0;
2827#if EV_MULTIPLICITY
2828 else
2829 ev_free (EV_A);
2830#endif
1762} 2831}
1763 2832
1764#if EV_USE_INOTIFY 2833#if EV_USE_INOTIFY
1765inline_size void infy_fork (EV_P); 2834inline_size void infy_fork (EV_P);
1766#endif 2835#endif
… …
1779#endif 2848#endif
1780#if EV_USE_INOTIFY 2849#if EV_USE_INOTIFY
1781 infy_fork (EV_A); 2850 infy_fork (EV_A);
1782#endif 2851#endif
1783 2852
2853#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1784 if (ev_is_active (&pipe_w)) 2854 if (ev_is_active (&pipe_w))
1785 { 2855 {
1786 /* this "locks" the handlers against writing to the pipe */ 2856 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1787 /* while we modify the fd vars */
1788 sig_pending = 1;
1789#if EV_ASYNC_ENABLE
1790 async_pending = 1;
1791#endif
1792 2857
1793 ev_ref (EV_A); 2858 ev_ref (EV_A);
1794 ev_io_stop (EV_A_ &pipe_w); 2859 ev_io_stop (EV_A_ &pipe_w);
1795 2860
1796#if EV_USE_EVENTFD
1797 if (evfd >= 0)
1798 close (evfd);
1799#endif
1800
1801 if (evpipe [0] >= 0) 2861 if (evpipe [0] >= 0)
1802 {
1803 EV_WIN32_CLOSE_FD (evpipe [0]); 2862 EV_WIN32_CLOSE_FD (evpipe [0]);
1804 EV_WIN32_CLOSE_FD (evpipe [1]);
1805 }
1806 2863
1807#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1808 evpipe_init (EV_A); 2864 evpipe_init (EV_A);
1809 /* now iterate over everything, in case we missed something */ 2865 /* iterate over everything, in case we missed something before */
1810 pipecb (EV_A_ &pipe_w, EV_READ); 2866 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1811#endif
1812 } 2867 }
2868#endif
1813 2869
1814 postfork = 0; 2870 postfork = 0;
1815} 2871}
1816 2872
1817#if EV_MULTIPLICITY 2873#if EV_MULTIPLICITY
1818 2874
1819struct ev_loop * 2875struct ev_loop * ecb_cold
1820ev_loop_new (unsigned int flags) 2876ev_loop_new (unsigned int flags) EV_THROW
1821{ 2877{
1822 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2878 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1823 2879
1824 memset (EV_A, 0, sizeof (struct ev_loop)); 2880 memset (EV_A, 0, sizeof (struct ev_loop));
1825 loop_init (EV_A_ flags); 2881 loop_init (EV_A_ flags);
1826 2882
1827 if (ev_backend (EV_A)) 2883 if (ev_backend (EV_A))
1828 return EV_A; 2884 return EV_A;
1829 2885
2886 ev_free (EV_A);
1830 return 0; 2887 return 0;
1831} 2888}
1832 2889
1833void
1834ev_loop_destroy (EV_P)
1835{
1836 loop_destroy (EV_A);
1837 ev_free (loop);
1838}
1839
1840void
1841ev_loop_fork (EV_P)
1842{
1843 postfork = 1; /* must be in line with ev_default_fork */
1844}
1845#endif /* multiplicity */ 2890#endif /* multiplicity */
1846 2891
1847#if EV_VERIFY 2892#if EV_VERIFY
1848static void noinline 2893static void noinline ecb_cold
1849verify_watcher (EV_P_ W w) 2894verify_watcher (EV_P_ W w)
1850{ 2895{
1851 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2896 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1852 2897
1853 if (w->pending) 2898 if (w->pending)
1854 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2899 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1855} 2900}
1856 2901
1857static void noinline 2902static void noinline ecb_cold
1858verify_heap (EV_P_ ANHE *heap, int N) 2903verify_heap (EV_P_ ANHE *heap, int N)
1859{ 2904{
1860 int i; 2905 int i;
1861 2906
1862 for (i = HEAP0; i < N + HEAP0; ++i) 2907 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1867 2912
1868 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2913 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1869 } 2914 }
1870} 2915}
1871 2916
1872static void noinline 2917static void noinline ecb_cold
1873array_verify (EV_P_ W *ws, int cnt) 2918array_verify (EV_P_ W *ws, int cnt)
1874{ 2919{
1875 while (cnt--) 2920 while (cnt--)
1876 { 2921 {
1877 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2922 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
1879 } 2924 }
1880} 2925}
1881#endif 2926#endif
1882 2927
1883#if EV_FEATURE_API 2928#if EV_FEATURE_API
1884void 2929void ecb_cold
1885ev_verify (EV_P) 2930ev_verify (EV_P) EV_THROW
1886{ 2931{
1887#if EV_VERIFY 2932#if EV_VERIFY
1888 int i; 2933 int i;
1889 WL w; 2934 WL w, w2;
1890 2935
1891 assert (activecnt >= -1); 2936 assert (activecnt >= -1);
1892 2937
1893 assert (fdchangemax >= fdchangecnt); 2938 assert (fdchangemax >= fdchangecnt);
1894 for (i = 0; i < fdchangecnt; ++i) 2939 for (i = 0; i < fdchangecnt; ++i)
1895 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2940 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1896 2941
1897 assert (anfdmax >= 0); 2942 assert (anfdmax >= 0);
1898 for (i = 0; i < anfdmax; ++i) 2943 for (i = 0; i < anfdmax; ++i)
2944 {
2945 int j = 0;
2946
1899 for (w = anfds [i].head; w; w = w->next) 2947 for (w = w2 = anfds [i].head; w; w = w->next)
1900 { 2948 {
1901 verify_watcher (EV_A_ (W)w); 2949 verify_watcher (EV_A_ (W)w);
2950
2951 if (j++ & 1)
2952 {
2953 assert (("libev: io watcher list contains a loop", w != w2));
2954 w2 = w2->next;
2955 }
2956
1902 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2957 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1903 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2958 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1904 } 2959 }
2960 }
1905 2961
1906 assert (timermax >= timercnt); 2962 assert (timermax >= timercnt);
1907 verify_heap (EV_A_ timers, timercnt); 2963 verify_heap (EV_A_ timers, timercnt);
1908 2964
1909#if EV_PERIODIC_ENABLE 2965#if EV_PERIODIC_ENABLE
… …
1924#if EV_FORK_ENABLE 2980#if EV_FORK_ENABLE
1925 assert (forkmax >= forkcnt); 2981 assert (forkmax >= forkcnt);
1926 array_verify (EV_A_ (W *)forks, forkcnt); 2982 array_verify (EV_A_ (W *)forks, forkcnt);
1927#endif 2983#endif
1928 2984
2985#if EV_CLEANUP_ENABLE
2986 assert (cleanupmax >= cleanupcnt);
2987 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2988#endif
2989
1929#if EV_ASYNC_ENABLE 2990#if EV_ASYNC_ENABLE
1930 assert (asyncmax >= asynccnt); 2991 assert (asyncmax >= asynccnt);
1931 array_verify (EV_A_ (W *)asyncs, asynccnt); 2992 array_verify (EV_A_ (W *)asyncs, asynccnt);
1932#endif 2993#endif
1933 2994
… …
1950#endif 3011#endif
1951} 3012}
1952#endif 3013#endif
1953 3014
1954#if EV_MULTIPLICITY 3015#if EV_MULTIPLICITY
1955struct ev_loop * 3016struct ev_loop * ecb_cold
1956ev_default_loop_init (unsigned int flags)
1957#else 3017#else
1958int 3018int
3019#endif
1959ev_default_loop (unsigned int flags) 3020ev_default_loop (unsigned int flags) EV_THROW
1960#endif
1961{ 3021{
1962 if (!ev_default_loop_ptr) 3022 if (!ev_default_loop_ptr)
1963 { 3023 {
1964#if EV_MULTIPLICITY 3024#if EV_MULTIPLICITY
1965 EV_P = ev_default_loop_ptr = &default_loop_struct; 3025 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1984 3044
1985 return ev_default_loop_ptr; 3045 return ev_default_loop_ptr;
1986} 3046}
1987 3047
1988void 3048void
1989ev_default_destroy (void) 3049ev_loop_fork (EV_P) EV_THROW
1990{ 3050{
1991#if EV_MULTIPLICITY 3051 postfork = 1;
1992 EV_P = ev_default_loop_ptr;
1993#endif
1994
1995 ev_default_loop_ptr = 0;
1996
1997#if EV_CHILD_ENABLE
1998 ev_ref (EV_A); /* child watcher */
1999 ev_signal_stop (EV_A_ &childev);
2000#endif
2001
2002 loop_destroy (EV_A);
2003}
2004
2005void
2006ev_default_fork (void)
2007{
2008#if EV_MULTIPLICITY
2009 EV_P = ev_default_loop_ptr;
2010#endif
2011
2012 postfork = 1; /* must be in line with ev_loop_fork */
2013} 3052}
2014 3053
2015/*****************************************************************************/ 3054/*****************************************************************************/
2016 3055
2017void 3056void
… …
2019{ 3058{
2020 EV_CB_INVOKE ((W)w, revents); 3059 EV_CB_INVOKE ((W)w, revents);
2021} 3060}
2022 3061
2023unsigned int 3062unsigned int
2024ev_pending_count (EV_P) 3063ev_pending_count (EV_P) EV_THROW
2025{ 3064{
2026 int pri; 3065 int pri;
2027 unsigned int count = 0; 3066 unsigned int count = 0;
2028 3067
2029 for (pri = NUMPRI; pri--; ) 3068 for (pri = NUMPRI; pri--; )
… …
2033} 3072}
2034 3073
2035void noinline 3074void noinline
2036ev_invoke_pending (EV_P) 3075ev_invoke_pending (EV_P)
2037{ 3076{
2038 int pri; 3077 pendingpri = NUMPRI;
2039 3078
2040 for (pri = NUMPRI; pri--; ) 3079 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
3080 {
3081 --pendingpri;
3082
2041 while (pendingcnt [pri]) 3083 while (pendingcnt [pendingpri])
2042 { 3084 {
2043 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3085 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2044 3086
2045 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2046 /* ^ this is no longer true, as pending_w could be here */
2047
2048 p->w->pending = 0; 3087 p->w->pending = 0;
2049 EV_CB_INVOKE (p->w, p->events); 3088 EV_CB_INVOKE (p->w, p->events);
2050 EV_FREQUENT_CHECK; 3089 EV_FREQUENT_CHECK;
2051 } 3090 }
3091 }
2052} 3092}
2053 3093
2054#if EV_IDLE_ENABLE 3094#if EV_IDLE_ENABLE
2055/* make idle watchers pending. this handles the "call-idle */ 3095/* make idle watchers pending. this handles the "call-idle */
2056/* only when higher priorities are idle" logic */ 3096/* only when higher priorities are idle" logic */
… …
2113 feed_reverse_done (EV_A_ EV_TIMER); 3153 feed_reverse_done (EV_A_ EV_TIMER);
2114 } 3154 }
2115} 3155}
2116 3156
2117#if EV_PERIODIC_ENABLE 3157#if EV_PERIODIC_ENABLE
3158
3159static void noinline
3160periodic_recalc (EV_P_ ev_periodic *w)
3161{
3162 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3163 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3164
3165 /* the above almost always errs on the low side */
3166 while (at <= ev_rt_now)
3167 {
3168 ev_tstamp nat = at + w->interval;
3169
3170 /* when resolution fails us, we use ev_rt_now */
3171 if (expect_false (nat == at))
3172 {
3173 at = ev_rt_now;
3174 break;
3175 }
3176
3177 at = nat;
3178 }
3179
3180 ev_at (w) = at;
3181}
3182
2118/* make periodics pending */ 3183/* make periodics pending */
2119inline_size void 3184inline_size void
2120periodics_reify (EV_P) 3185periodics_reify (EV_P)
2121{ 3186{
2122 EV_FREQUENT_CHECK; 3187 EV_FREQUENT_CHECK;
2123 3188
2124 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3189 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2125 { 3190 {
2126 int feed_count = 0;
2127
2128 do 3191 do
2129 { 3192 {
2130 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3193 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2131 3194
2132 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3195 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2141 ANHE_at_cache (periodics [HEAP0]); 3204 ANHE_at_cache (periodics [HEAP0]);
2142 downheap (periodics, periodiccnt, HEAP0); 3205 downheap (periodics, periodiccnt, HEAP0);
2143 } 3206 }
2144 else if (w->interval) 3207 else if (w->interval)
2145 { 3208 {
2146 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3209 periodic_recalc (EV_A_ w);
2147 /* if next trigger time is not sufficiently in the future, put it there */
2148 /* this might happen because of floating point inexactness */
2149 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2150 {
2151 ev_at (w) += w->interval;
2152
2153 /* if interval is unreasonably low we might still have a time in the past */
2154 /* so correct this. this will make the periodic very inexact, but the user */
2155 /* has effectively asked to get triggered more often than possible */
2156 if (ev_at (w) < ev_rt_now)
2157 ev_at (w) = ev_rt_now;
2158 }
2159
2160 ANHE_at_cache (periodics [HEAP0]); 3210 ANHE_at_cache (periodics [HEAP0]);
2161 downheap (periodics, periodiccnt, HEAP0); 3211 downheap (periodics, periodiccnt, HEAP0);
2162 } 3212 }
2163 else 3213 else
2164 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3214 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2171 feed_reverse_done (EV_A_ EV_PERIODIC); 3221 feed_reverse_done (EV_A_ EV_PERIODIC);
2172 } 3222 }
2173} 3223}
2174 3224
2175/* simply recalculate all periodics */ 3225/* simply recalculate all periodics */
2176/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 3226/* TODO: maybe ensure that at least one event happens when jumping forward? */
2177static void noinline 3227static void noinline ecb_cold
2178periodics_reschedule (EV_P) 3228periodics_reschedule (EV_P)
2179{ 3229{
2180 int i; 3230 int i;
2181 3231
2182 /* adjust periodics after time jump */ 3232 /* adjust periodics after time jump */
… …
2185 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3235 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2186 3236
2187 if (w->reschedule_cb) 3237 if (w->reschedule_cb)
2188 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3238 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2189 else if (w->interval) 3239 else if (w->interval)
2190 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3240 periodic_recalc (EV_A_ w);
2191 3241
2192 ANHE_at_cache (periodics [i]); 3242 ANHE_at_cache (periodics [i]);
2193 } 3243 }
2194 3244
2195 reheap (periodics, periodiccnt); 3245 reheap (periodics, periodiccnt);
2196} 3246}
2197#endif 3247#endif
2198 3248
2199/* adjust all timers by a given offset */ 3249/* adjust all timers by a given offset */
2200static void noinline 3250static void noinline ecb_cold
2201timers_reschedule (EV_P_ ev_tstamp adjust) 3251timers_reschedule (EV_P_ ev_tstamp adjust)
2202{ 3252{
2203 int i; 3253 int i;
2204 3254
2205 for (i = 0; i < timercnt; ++i) 3255 for (i = 0; i < timercnt; ++i)
… …
2242 * doesn't hurt either as we only do this on time-jumps or 3292 * doesn't hurt either as we only do this on time-jumps or
2243 * in the unlikely event of having been preempted here. 3293 * in the unlikely event of having been preempted here.
2244 */ 3294 */
2245 for (i = 4; --i; ) 3295 for (i = 4; --i; )
2246 { 3296 {
3297 ev_tstamp diff;
2247 rtmn_diff = ev_rt_now - mn_now; 3298 rtmn_diff = ev_rt_now - mn_now;
2248 3299
3300 diff = odiff - rtmn_diff;
3301
2249 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3302 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2250 return; /* all is well */ 3303 return; /* all is well */
2251 3304
2252 ev_rt_now = ev_time (); 3305 ev_rt_now = ev_time ();
2253 mn_now = get_clock (); 3306 mn_now = get_clock ();
2254 now_floor = mn_now; 3307 now_floor = mn_now;
… …
2276 3329
2277 mn_now = ev_rt_now; 3330 mn_now = ev_rt_now;
2278 } 3331 }
2279} 3332}
2280 3333
2281void 3334int
2282ev_loop (EV_P_ int flags) 3335ev_run (EV_P_ int flags)
2283{ 3336{
2284#if EV_FEATURE_API 3337#if EV_FEATURE_API
2285 ++loop_depth; 3338 ++loop_depth;
2286#endif 3339#endif
2287 3340
2288 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 3341 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2289 3342
2290 loop_done = EVUNLOOP_CANCEL; 3343 loop_done = EVBREAK_CANCEL;
2291 3344
2292 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3345 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2293 3346
2294 do 3347 do
2295 { 3348 {
… …
2338 /* calculate blocking time */ 3391 /* calculate blocking time */
2339 { 3392 {
2340 ev_tstamp waittime = 0.; 3393 ev_tstamp waittime = 0.;
2341 ev_tstamp sleeptime = 0.; 3394 ev_tstamp sleeptime = 0.;
2342 3395
3396 /* remember old timestamp for io_blocktime calculation */
3397 ev_tstamp prev_mn_now = mn_now;
3398
3399 /* update time to cancel out callback processing overhead */
3400 time_update (EV_A_ 1e100);
3401
3402 /* from now on, we want a pipe-wake-up */
3403 pipe_write_wanted = 1;
3404
3405 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3406
2343 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3407 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2344 { 3408 {
2345 /* remember old timestamp for io_blocktime calculation */
2346 ev_tstamp prev_mn_now = mn_now;
2347
2348 /* update time to cancel out callback processing overhead */
2349 time_update (EV_A_ 1e100);
2350
2351 waittime = MAX_BLOCKTIME; 3409 waittime = MAX_BLOCKTIME;
2352 3410
2353 if (timercnt) 3411 if (timercnt)
2354 { 3412 {
2355 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3413 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2356 if (waittime > to) waittime = to; 3414 if (waittime > to) waittime = to;
2357 } 3415 }
2358 3416
2359#if EV_PERIODIC_ENABLE 3417#if EV_PERIODIC_ENABLE
2360 if (periodiccnt) 3418 if (periodiccnt)
2361 { 3419 {
2362 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3420 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2363 if (waittime > to) waittime = to; 3421 if (waittime > to) waittime = to;
2364 } 3422 }
2365#endif 3423#endif
2366 3424
2367 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3425 /* don't let timeouts decrease the waittime below timeout_blocktime */
2368 if (expect_false (waittime < timeout_blocktime)) 3426 if (expect_false (waittime < timeout_blocktime))
2369 waittime = timeout_blocktime; 3427 waittime = timeout_blocktime;
3428
3429 /* at this point, we NEED to wait, so we have to ensure */
3430 /* to pass a minimum nonzero value to the backend */
3431 if (expect_false (waittime < backend_mintime))
3432 waittime = backend_mintime;
2370 3433
2371 /* extra check because io_blocktime is commonly 0 */ 3434 /* extra check because io_blocktime is commonly 0 */
2372 if (expect_false (io_blocktime)) 3435 if (expect_false (io_blocktime))
2373 { 3436 {
2374 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3437 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2375 3438
2376 if (sleeptime > waittime - backend_fudge) 3439 if (sleeptime > waittime - backend_mintime)
2377 sleeptime = waittime - backend_fudge; 3440 sleeptime = waittime - backend_mintime;
2378 3441
2379 if (expect_true (sleeptime > 0.)) 3442 if (expect_true (sleeptime > 0.))
2380 { 3443 {
2381 ev_sleep (sleeptime); 3444 ev_sleep (sleeptime);
2382 waittime -= sleeptime; 3445 waittime -= sleeptime;
… …
2385 } 3448 }
2386 3449
2387#if EV_FEATURE_API 3450#if EV_FEATURE_API
2388 ++loop_count; 3451 ++loop_count;
2389#endif 3452#endif
2390 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3453 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2391 backend_poll (EV_A_ waittime); 3454 backend_poll (EV_A_ waittime);
2392 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3455 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3456
3457 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3458
3459 ECB_MEMORY_FENCE_ACQUIRE;
3460 if (pipe_write_skipped)
3461 {
3462 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3463 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3464 }
3465
2393 3466
2394 /* update ev_rt_now, do magic */ 3467 /* update ev_rt_now, do magic */
2395 time_update (EV_A_ waittime + sleeptime); 3468 time_update (EV_A_ waittime + sleeptime);
2396 } 3469 }
2397 3470
… …
2415 EV_INVOKE_PENDING; 3488 EV_INVOKE_PENDING;
2416 } 3489 }
2417 while (expect_true ( 3490 while (expect_true (
2418 activecnt 3491 activecnt
2419 && !loop_done 3492 && !loop_done
2420 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3493 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2421 )); 3494 ));
2422 3495
2423 if (loop_done == EVUNLOOP_ONE) 3496 if (loop_done == EVBREAK_ONE)
2424 loop_done = EVUNLOOP_CANCEL; 3497 loop_done = EVBREAK_CANCEL;
2425 3498
2426#if EV_FEATURE_API 3499#if EV_FEATURE_API
2427 --loop_depth; 3500 --loop_depth;
2428#endif 3501#endif
3502
3503 return activecnt;
2429} 3504}
2430 3505
2431void 3506void
2432ev_unloop (EV_P_ int how) 3507ev_break (EV_P_ int how) EV_THROW
2433{ 3508{
2434 loop_done = how; 3509 loop_done = how;
2435} 3510}
2436 3511
2437void 3512void
2438ev_ref (EV_P) 3513ev_ref (EV_P) EV_THROW
2439{ 3514{
2440 ++activecnt; 3515 ++activecnt;
2441} 3516}
2442 3517
2443void 3518void
2444ev_unref (EV_P) 3519ev_unref (EV_P) EV_THROW
2445{ 3520{
2446 --activecnt; 3521 --activecnt;
2447} 3522}
2448 3523
2449void 3524void
2450ev_now_update (EV_P) 3525ev_now_update (EV_P) EV_THROW
2451{ 3526{
2452 time_update (EV_A_ 1e100); 3527 time_update (EV_A_ 1e100);
2453} 3528}
2454 3529
2455void 3530void
2456ev_suspend (EV_P) 3531ev_suspend (EV_P) EV_THROW
2457{ 3532{
2458 ev_now_update (EV_A); 3533 ev_now_update (EV_A);
2459} 3534}
2460 3535
2461void 3536void
2462ev_resume (EV_P) 3537ev_resume (EV_P) EV_THROW
2463{ 3538{
2464 ev_tstamp mn_prev = mn_now; 3539 ev_tstamp mn_prev = mn_now;
2465 3540
2466 ev_now_update (EV_A); 3541 ev_now_update (EV_A);
2467 timers_reschedule (EV_A_ mn_now - mn_prev); 3542 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2506 w->pending = 0; 3581 w->pending = 0;
2507 } 3582 }
2508} 3583}
2509 3584
2510int 3585int
2511ev_clear_pending (EV_P_ void *w) 3586ev_clear_pending (EV_P_ void *w) EV_THROW
2512{ 3587{
2513 W w_ = (W)w; 3588 W w_ = (W)w;
2514 int pending = w_->pending; 3589 int pending = w_->pending;
2515 3590
2516 if (expect_true (pending)) 3591 if (expect_true (pending))
… …
2549} 3624}
2550 3625
2551/*****************************************************************************/ 3626/*****************************************************************************/
2552 3627
2553void noinline 3628void noinline
2554ev_io_start (EV_P_ ev_io *w) 3629ev_io_start (EV_P_ ev_io *w) EV_THROW
2555{ 3630{
2556 int fd = w->fd; 3631 int fd = w->fd;
2557 3632
2558 if (expect_false (ev_is_active (w))) 3633 if (expect_false (ev_is_active (w)))
2559 return; 3634 return;
… …
2565 3640
2566 ev_start (EV_A_ (W)w, 1); 3641 ev_start (EV_A_ (W)w, 1);
2567 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3642 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2568 wlist_add (&anfds[fd].head, (WL)w); 3643 wlist_add (&anfds[fd].head, (WL)w);
2569 3644
3645 /* common bug, apparently */
3646 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3647
2570 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3648 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2571 w->events &= ~EV__IOFDSET; 3649 w->events &= ~EV__IOFDSET;
2572 3650
2573 EV_FREQUENT_CHECK; 3651 EV_FREQUENT_CHECK;
2574} 3652}
2575 3653
2576void noinline 3654void noinline
2577ev_io_stop (EV_P_ ev_io *w) 3655ev_io_stop (EV_P_ ev_io *w) EV_THROW
2578{ 3656{
2579 clear_pending (EV_A_ (W)w); 3657 clear_pending (EV_A_ (W)w);
2580 if (expect_false (!ev_is_active (w))) 3658 if (expect_false (!ev_is_active (w)))
2581 return; 3659 return;
2582 3660
… …
2585 EV_FREQUENT_CHECK; 3663 EV_FREQUENT_CHECK;
2586 3664
2587 wlist_del (&anfds[w->fd].head, (WL)w); 3665 wlist_del (&anfds[w->fd].head, (WL)w);
2588 ev_stop (EV_A_ (W)w); 3666 ev_stop (EV_A_ (W)w);
2589 3667
2590 fd_change (EV_A_ w->fd, 1); 3668 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2591 3669
2592 EV_FREQUENT_CHECK; 3670 EV_FREQUENT_CHECK;
2593} 3671}
2594 3672
2595void noinline 3673void noinline
2596ev_timer_start (EV_P_ ev_timer *w) 3674ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2597{ 3675{
2598 if (expect_false (ev_is_active (w))) 3676 if (expect_false (ev_is_active (w)))
2599 return; 3677 return;
2600 3678
2601 ev_at (w) += mn_now; 3679 ev_at (w) += mn_now;
… …
2615 3693
2616 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3694 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2617} 3695}
2618 3696
2619void noinline 3697void noinline
2620ev_timer_stop (EV_P_ ev_timer *w) 3698ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2621{ 3699{
2622 clear_pending (EV_A_ (W)w); 3700 clear_pending (EV_A_ (W)w);
2623 if (expect_false (!ev_is_active (w))) 3701 if (expect_false (!ev_is_active (w)))
2624 return; 3702 return;
2625 3703
… …
2645 3723
2646 EV_FREQUENT_CHECK; 3724 EV_FREQUENT_CHECK;
2647} 3725}
2648 3726
2649void noinline 3727void noinline
2650ev_timer_again (EV_P_ ev_timer *w) 3728ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2651{ 3729{
2652 EV_FREQUENT_CHECK; 3730 EV_FREQUENT_CHECK;
3731
3732 clear_pending (EV_A_ (W)w);
2653 3733
2654 if (ev_is_active (w)) 3734 if (ev_is_active (w))
2655 { 3735 {
2656 if (w->repeat) 3736 if (w->repeat)
2657 { 3737 {
… …
2670 3750
2671 EV_FREQUENT_CHECK; 3751 EV_FREQUENT_CHECK;
2672} 3752}
2673 3753
2674ev_tstamp 3754ev_tstamp
2675ev_timer_remaining (EV_P_ ev_timer *w) 3755ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2676{ 3756{
2677 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3757 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2678} 3758}
2679 3759
2680#if EV_PERIODIC_ENABLE 3760#if EV_PERIODIC_ENABLE
2681void noinline 3761void noinline
2682ev_periodic_start (EV_P_ ev_periodic *w) 3762ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2683{ 3763{
2684 if (expect_false (ev_is_active (w))) 3764 if (expect_false (ev_is_active (w)))
2685 return; 3765 return;
2686 3766
2687 if (w->reschedule_cb) 3767 if (w->reschedule_cb)
2688 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3768 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2689 else if (w->interval) 3769 else if (w->interval)
2690 { 3770 {
2691 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3771 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2692 /* this formula differs from the one in periodic_reify because we do not always round up */ 3772 periodic_recalc (EV_A_ w);
2693 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2694 } 3773 }
2695 else 3774 else
2696 ev_at (w) = w->offset; 3775 ev_at (w) = w->offset;
2697 3776
2698 EV_FREQUENT_CHECK; 3777 EV_FREQUENT_CHECK;
… …
2708 3787
2709 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3788 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2710} 3789}
2711 3790
2712void noinline 3791void noinline
2713ev_periodic_stop (EV_P_ ev_periodic *w) 3792ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2714{ 3793{
2715 clear_pending (EV_A_ (W)w); 3794 clear_pending (EV_A_ (W)w);
2716 if (expect_false (!ev_is_active (w))) 3795 if (expect_false (!ev_is_active (w)))
2717 return; 3796 return;
2718 3797
… …
2736 3815
2737 EV_FREQUENT_CHECK; 3816 EV_FREQUENT_CHECK;
2738} 3817}
2739 3818
2740void noinline 3819void noinline
2741ev_periodic_again (EV_P_ ev_periodic *w) 3820ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2742{ 3821{
2743 /* TODO: use adjustheap and recalculation */ 3822 /* TODO: use adjustheap and recalculation */
2744 ev_periodic_stop (EV_A_ w); 3823 ev_periodic_stop (EV_A_ w);
2745 ev_periodic_start (EV_A_ w); 3824 ev_periodic_start (EV_A_ w);
2746} 3825}
… …
2751#endif 3830#endif
2752 3831
2753#if EV_SIGNAL_ENABLE 3832#if EV_SIGNAL_ENABLE
2754 3833
2755void noinline 3834void noinline
2756ev_signal_start (EV_P_ ev_signal *w) 3835ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2757{ 3836{
2758 if (expect_false (ev_is_active (w))) 3837 if (expect_false (ev_is_active (w)))
2759 return; 3838 return;
2760 3839
2761 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3840 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
2763#if EV_MULTIPLICITY 3842#if EV_MULTIPLICITY
2764 assert (("libev: a signal must not be attached to two different loops", 3843 assert (("libev: a signal must not be attached to two different loops",
2765 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 3844 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2766 3845
2767 signals [w->signum - 1].loop = EV_A; 3846 signals [w->signum - 1].loop = EV_A;
3847 ECB_MEMORY_FENCE_RELEASE;
2768#endif 3848#endif
2769 3849
2770 EV_FREQUENT_CHECK; 3850 EV_FREQUENT_CHECK;
2771 3851
2772#if EV_USE_SIGNALFD 3852#if EV_USE_SIGNALFD
… …
2819 sa.sa_handler = ev_sighandler; 3899 sa.sa_handler = ev_sighandler;
2820 sigfillset (&sa.sa_mask); 3900 sigfillset (&sa.sa_mask);
2821 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3901 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2822 sigaction (w->signum, &sa, 0); 3902 sigaction (w->signum, &sa, 0);
2823 3903
3904 if (origflags & EVFLAG_NOSIGMASK)
3905 {
2824 sigemptyset (&sa.sa_mask); 3906 sigemptyset (&sa.sa_mask);
2825 sigaddset (&sa.sa_mask, w->signum); 3907 sigaddset (&sa.sa_mask, w->signum);
2826 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3908 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3909 }
2827#endif 3910#endif
2828 } 3911 }
2829 3912
2830 EV_FREQUENT_CHECK; 3913 EV_FREQUENT_CHECK;
2831} 3914}
2832 3915
2833void noinline 3916void noinline
2834ev_signal_stop (EV_P_ ev_signal *w) 3917ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2835{ 3918{
2836 clear_pending (EV_A_ (W)w); 3919 clear_pending (EV_A_ (W)w);
2837 if (expect_false (!ev_is_active (w))) 3920 if (expect_false (!ev_is_active (w)))
2838 return; 3921 return;
2839 3922
… …
2870#endif 3953#endif
2871 3954
2872#if EV_CHILD_ENABLE 3955#if EV_CHILD_ENABLE
2873 3956
2874void 3957void
2875ev_child_start (EV_P_ ev_child *w) 3958ev_child_start (EV_P_ ev_child *w) EV_THROW
2876{ 3959{
2877#if EV_MULTIPLICITY 3960#if EV_MULTIPLICITY
2878 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3961 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2879#endif 3962#endif
2880 if (expect_false (ev_is_active (w))) 3963 if (expect_false (ev_is_active (w)))
… …
2887 3970
2888 EV_FREQUENT_CHECK; 3971 EV_FREQUENT_CHECK;
2889} 3972}
2890 3973
2891void 3974void
2892ev_child_stop (EV_P_ ev_child *w) 3975ev_child_stop (EV_P_ ev_child *w) EV_THROW
2893{ 3976{
2894 clear_pending (EV_A_ (W)w); 3977 clear_pending (EV_A_ (W)w);
2895 if (expect_false (!ev_is_active (w))) 3978 if (expect_false (!ev_is_active (w)))
2896 return; 3979 return;
2897 3980
… …
2924# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4007# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2925 4008
2926static void noinline 4009static void noinline
2927infy_add (EV_P_ ev_stat *w) 4010infy_add (EV_P_ ev_stat *w)
2928{ 4011{
2929 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); 4012 w->wd = inotify_add_watch (fs_fd, w->path,
4013 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4014 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4015 | IN_DONT_FOLLOW | IN_MASK_ADD);
2930 4016
2931 if (w->wd >= 0) 4017 if (w->wd >= 0)
2932 { 4018 {
2933 struct statfs sfs; 4019 struct statfs sfs;
2934 4020
… …
2938 4024
2939 if (!fs_2625) 4025 if (!fs_2625)
2940 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4026 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2941 else if (!statfs (w->path, &sfs) 4027 else if (!statfs (w->path, &sfs)
2942 && (sfs.f_type == 0x1373 /* devfs */ 4028 && (sfs.f_type == 0x1373 /* devfs */
4029 || sfs.f_type == 0x4006 /* fat */
4030 || sfs.f_type == 0x4d44 /* msdos */
2943 || sfs.f_type == 0xEF53 /* ext2/3 */ 4031 || sfs.f_type == 0xEF53 /* ext2/3 */
4032 || sfs.f_type == 0x72b6 /* jffs2 */
4033 || sfs.f_type == 0x858458f6 /* ramfs */
4034 || sfs.f_type == 0x5346544e /* ntfs */
2944 || sfs.f_type == 0x3153464a /* jfs */ 4035 || sfs.f_type == 0x3153464a /* jfs */
4036 || sfs.f_type == 0x9123683e /* btrfs */
2945 || sfs.f_type == 0x52654973 /* reiser3 */ 4037 || sfs.f_type == 0x52654973 /* reiser3 */
2946 || sfs.f_type == 0x01021994 /* tempfs */ 4038 || sfs.f_type == 0x01021994 /* tmpfs */
2947 || sfs.f_type == 0x58465342 /* xfs */)) 4039 || sfs.f_type == 0x58465342 /* xfs */))
2948 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4040 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2949 else 4041 else
2950 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4042 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2951 } 4043 }
… …
2972 if (!pend || pend == path) 4064 if (!pend || pend == path)
2973 break; 4065 break;
2974 4066
2975 *pend = 0; 4067 *pend = 0;
2976 w->wd = inotify_add_watch (fs_fd, path, mask); 4068 w->wd = inotify_add_watch (fs_fd, path, mask);
2977 } 4069 }
2978 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4070 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2979 } 4071 }
2980 } 4072 }
2981 4073
2982 if (w->wd >= 0) 4074 if (w->wd >= 0)
… …
3049 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4141 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3050 ofs += sizeof (struct inotify_event) + ev->len; 4142 ofs += sizeof (struct inotify_event) + ev->len;
3051 } 4143 }
3052} 4144}
3053 4145
3054inline_size unsigned int
3055ev_linux_version (void)
3056{
3057 struct utsname buf;
3058 unsigned int v;
3059 int i;
3060 char *p = buf.release;
3061
3062 if (uname (&buf))
3063 return 0;
3064
3065 for (i = 3+1; --i; )
3066 {
3067 unsigned int c = 0;
3068
3069 for (;;)
3070 {
3071 if (*p >= '0' && *p <= '9')
3072 c = c * 10 + *p++ - '0';
3073 else
3074 {
3075 p += *p == '.';
3076 break;
3077 }
3078 }
3079
3080 v = (v << 8) | c;
3081 }
3082
3083 return v;
3084}
3085
3086inline_size void 4146inline_size void ecb_cold
3087ev_check_2625 (EV_P) 4147ev_check_2625 (EV_P)
3088{ 4148{
3089 /* kernels < 2.6.25 are borked 4149 /* kernels < 2.6.25 are borked
3090 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4150 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3091 */ 4151 */
… …
3096} 4156}
3097 4157
3098inline_size int 4158inline_size int
3099infy_newfd (void) 4159infy_newfd (void)
3100{ 4160{
3101#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4161#if defined IN_CLOEXEC && defined IN_NONBLOCK
3102 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4162 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3103 if (fd >= 0) 4163 if (fd >= 0)
3104 return fd; 4164 return fd;
3105#endif 4165#endif
3106 return inotify_init (); 4166 return inotify_init ();
… …
3181#else 4241#else
3182# define EV_LSTAT(p,b) lstat (p, b) 4242# define EV_LSTAT(p,b) lstat (p, b)
3183#endif 4243#endif
3184 4244
3185void 4245void
3186ev_stat_stat (EV_P_ ev_stat *w) 4246ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3187{ 4247{
3188 if (lstat (w->path, &w->attr) < 0) 4248 if (lstat (w->path, &w->attr) < 0)
3189 w->attr.st_nlink = 0; 4249 w->attr.st_nlink = 0;
3190 else if (!w->attr.st_nlink) 4250 else if (!w->attr.st_nlink)
3191 w->attr.st_nlink = 1; 4251 w->attr.st_nlink = 1;
… …
3230 ev_feed_event (EV_A_ w, EV_STAT); 4290 ev_feed_event (EV_A_ w, EV_STAT);
3231 } 4291 }
3232} 4292}
3233 4293
3234void 4294void
3235ev_stat_start (EV_P_ ev_stat *w) 4295ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3236{ 4296{
3237 if (expect_false (ev_is_active (w))) 4297 if (expect_false (ev_is_active (w)))
3238 return; 4298 return;
3239 4299
3240 ev_stat_stat (EV_A_ w); 4300 ev_stat_stat (EV_A_ w);
… …
3261 4321
3262 EV_FREQUENT_CHECK; 4322 EV_FREQUENT_CHECK;
3263} 4323}
3264 4324
3265void 4325void
3266ev_stat_stop (EV_P_ ev_stat *w) 4326ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3267{ 4327{
3268 clear_pending (EV_A_ (W)w); 4328 clear_pending (EV_A_ (W)w);
3269 if (expect_false (!ev_is_active (w))) 4329 if (expect_false (!ev_is_active (w)))
3270 return; 4330 return;
3271 4331
… …
3287} 4347}
3288#endif 4348#endif
3289 4349
3290#if EV_IDLE_ENABLE 4350#if EV_IDLE_ENABLE
3291void 4351void
3292ev_idle_start (EV_P_ ev_idle *w) 4352ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3293{ 4353{
3294 if (expect_false (ev_is_active (w))) 4354 if (expect_false (ev_is_active (w)))
3295 return; 4355 return;
3296 4356
3297 pri_adjust (EV_A_ (W)w); 4357 pri_adjust (EV_A_ (W)w);
… …
3310 4370
3311 EV_FREQUENT_CHECK; 4371 EV_FREQUENT_CHECK;
3312} 4372}
3313 4373
3314void 4374void
3315ev_idle_stop (EV_P_ ev_idle *w) 4375ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3316{ 4376{
3317 clear_pending (EV_A_ (W)w); 4377 clear_pending (EV_A_ (W)w);
3318 if (expect_false (!ev_is_active (w))) 4378 if (expect_false (!ev_is_active (w)))
3319 return; 4379 return;
3320 4380
… …
3334} 4394}
3335#endif 4395#endif
3336 4396
3337#if EV_PREPARE_ENABLE 4397#if EV_PREPARE_ENABLE
3338void 4398void
3339ev_prepare_start (EV_P_ ev_prepare *w) 4399ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3340{ 4400{
3341 if (expect_false (ev_is_active (w))) 4401 if (expect_false (ev_is_active (w)))
3342 return; 4402 return;
3343 4403
3344 EV_FREQUENT_CHECK; 4404 EV_FREQUENT_CHECK;
… …
3349 4409
3350 EV_FREQUENT_CHECK; 4410 EV_FREQUENT_CHECK;
3351} 4411}
3352 4412
3353void 4413void
3354ev_prepare_stop (EV_P_ ev_prepare *w) 4414ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3355{ 4415{
3356 clear_pending (EV_A_ (W)w); 4416 clear_pending (EV_A_ (W)w);
3357 if (expect_false (!ev_is_active (w))) 4417 if (expect_false (!ev_is_active (w)))
3358 return; 4418 return;
3359 4419
… …
3372} 4432}
3373#endif 4433#endif
3374 4434
3375#if EV_CHECK_ENABLE 4435#if EV_CHECK_ENABLE
3376void 4436void
3377ev_check_start (EV_P_ ev_check *w) 4437ev_check_start (EV_P_ ev_check *w) EV_THROW
3378{ 4438{
3379 if (expect_false (ev_is_active (w))) 4439 if (expect_false (ev_is_active (w)))
3380 return; 4440 return;
3381 4441
3382 EV_FREQUENT_CHECK; 4442 EV_FREQUENT_CHECK;
… …
3387 4447
3388 EV_FREQUENT_CHECK; 4448 EV_FREQUENT_CHECK;
3389} 4449}
3390 4450
3391void 4451void
3392ev_check_stop (EV_P_ ev_check *w) 4452ev_check_stop (EV_P_ ev_check *w) EV_THROW
3393{ 4453{
3394 clear_pending (EV_A_ (W)w); 4454 clear_pending (EV_A_ (W)w);
3395 if (expect_false (!ev_is_active (w))) 4455 if (expect_false (!ev_is_active (w)))
3396 return; 4456 return;
3397 4457
… …
3410} 4470}
3411#endif 4471#endif
3412 4472
3413#if EV_EMBED_ENABLE 4473#if EV_EMBED_ENABLE
3414void noinline 4474void noinline
3415ev_embed_sweep (EV_P_ ev_embed *w) 4475ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3416{ 4476{
3417 ev_loop (w->other, EVLOOP_NONBLOCK); 4477 ev_run (w->other, EVRUN_NOWAIT);
3418} 4478}
3419 4479
3420static void 4480static void
3421embed_io_cb (EV_P_ ev_io *io, int revents) 4481embed_io_cb (EV_P_ ev_io *io, int revents)
3422{ 4482{
3423 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4483 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3424 4484
3425 if (ev_cb (w)) 4485 if (ev_cb (w))
3426 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4486 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3427 else 4487 else
3428 ev_loop (w->other, EVLOOP_NONBLOCK); 4488 ev_run (w->other, EVRUN_NOWAIT);
3429} 4489}
3430 4490
3431static void 4491static void
3432embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4492embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3433{ 4493{
… …
3437 EV_P = w->other; 4497 EV_P = w->other;
3438 4498
3439 while (fdchangecnt) 4499 while (fdchangecnt)
3440 { 4500 {
3441 fd_reify (EV_A); 4501 fd_reify (EV_A);
3442 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4502 ev_run (EV_A_ EVRUN_NOWAIT);
3443 } 4503 }
3444 } 4504 }
3445} 4505}
3446 4506
3447static void 4507static void
… …
3453 4513
3454 { 4514 {
3455 EV_P = w->other; 4515 EV_P = w->other;
3456 4516
3457 ev_loop_fork (EV_A); 4517 ev_loop_fork (EV_A);
3458 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4518 ev_run (EV_A_ EVRUN_NOWAIT);
3459 } 4519 }
3460 4520
3461 ev_embed_start (EV_A_ w); 4521 ev_embed_start (EV_A_ w);
3462} 4522}
3463 4523
… …
3468 ev_idle_stop (EV_A_ idle); 4528 ev_idle_stop (EV_A_ idle);
3469} 4529}
3470#endif 4530#endif
3471 4531
3472void 4532void
3473ev_embed_start (EV_P_ ev_embed *w) 4533ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3474{ 4534{
3475 if (expect_false (ev_is_active (w))) 4535 if (expect_false (ev_is_active (w)))
3476 return; 4536 return;
3477 4537
3478 { 4538 {
… …
3499 4559
3500 EV_FREQUENT_CHECK; 4560 EV_FREQUENT_CHECK;
3501} 4561}
3502 4562
3503void 4563void
3504ev_embed_stop (EV_P_ ev_embed *w) 4564ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3505{ 4565{
3506 clear_pending (EV_A_ (W)w); 4566 clear_pending (EV_A_ (W)w);
3507 if (expect_false (!ev_is_active (w))) 4567 if (expect_false (!ev_is_active (w)))
3508 return; 4568 return;
3509 4569
… …
3519} 4579}
3520#endif 4580#endif
3521 4581
3522#if EV_FORK_ENABLE 4582#if EV_FORK_ENABLE
3523void 4583void
3524ev_fork_start (EV_P_ ev_fork *w) 4584ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3525{ 4585{
3526 if (expect_false (ev_is_active (w))) 4586 if (expect_false (ev_is_active (w)))
3527 return; 4587 return;
3528 4588
3529 EV_FREQUENT_CHECK; 4589 EV_FREQUENT_CHECK;
… …
3534 4594
3535 EV_FREQUENT_CHECK; 4595 EV_FREQUENT_CHECK;
3536} 4596}
3537 4597
3538void 4598void
3539ev_fork_stop (EV_P_ ev_fork *w) 4599ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3540{ 4600{
3541 clear_pending (EV_A_ (W)w); 4601 clear_pending (EV_A_ (W)w);
3542 if (expect_false (!ev_is_active (w))) 4602 if (expect_false (!ev_is_active (w)))
3543 return; 4603 return;
3544 4604
… …
3555 4615
3556 EV_FREQUENT_CHECK; 4616 EV_FREQUENT_CHECK;
3557} 4617}
3558#endif 4618#endif
3559 4619
4620#if EV_CLEANUP_ENABLE
4621void
4622ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4623{
4624 if (expect_false (ev_is_active (w)))
4625 return;
4626
4627 EV_FREQUENT_CHECK;
4628
4629 ev_start (EV_A_ (W)w, ++cleanupcnt);
4630 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4631 cleanups [cleanupcnt - 1] = w;
4632
4633 /* cleanup watchers should never keep a refcount on the loop */
4634 ev_unref (EV_A);
4635 EV_FREQUENT_CHECK;
4636}
4637
4638void
4639ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4640{
4641 clear_pending (EV_A_ (W)w);
4642 if (expect_false (!ev_is_active (w)))
4643 return;
4644
4645 EV_FREQUENT_CHECK;
4646 ev_ref (EV_A);
4647
4648 {
4649 int active = ev_active (w);
4650
4651 cleanups [active - 1] = cleanups [--cleanupcnt];
4652 ev_active (cleanups [active - 1]) = active;
4653 }
4654
4655 ev_stop (EV_A_ (W)w);
4656
4657 EV_FREQUENT_CHECK;
4658}
4659#endif
4660
3560#if EV_ASYNC_ENABLE 4661#if EV_ASYNC_ENABLE
3561void 4662void
3562ev_async_start (EV_P_ ev_async *w) 4663ev_async_start (EV_P_ ev_async *w) EV_THROW
3563{ 4664{
3564 if (expect_false (ev_is_active (w))) 4665 if (expect_false (ev_is_active (w)))
3565 return; 4666 return;
4667
4668 w->sent = 0;
3566 4669
3567 evpipe_init (EV_A); 4670 evpipe_init (EV_A);
3568 4671
3569 EV_FREQUENT_CHECK; 4672 EV_FREQUENT_CHECK;
3570 4673
… …
3574 4677
3575 EV_FREQUENT_CHECK; 4678 EV_FREQUENT_CHECK;
3576} 4679}
3577 4680
3578void 4681void
3579ev_async_stop (EV_P_ ev_async *w) 4682ev_async_stop (EV_P_ ev_async *w) EV_THROW
3580{ 4683{
3581 clear_pending (EV_A_ (W)w); 4684 clear_pending (EV_A_ (W)w);
3582 if (expect_false (!ev_is_active (w))) 4685 if (expect_false (!ev_is_active (w)))
3583 return; 4686 return;
3584 4687
… …
3595 4698
3596 EV_FREQUENT_CHECK; 4699 EV_FREQUENT_CHECK;
3597} 4700}
3598 4701
3599void 4702void
3600ev_async_send (EV_P_ ev_async *w) 4703ev_async_send (EV_P_ ev_async *w) EV_THROW
3601{ 4704{
3602 w->sent = 1; 4705 w->sent = 1;
3603 evpipe_write (EV_A_ &async_pending); 4706 evpipe_write (EV_A_ &async_pending);
3604} 4707}
3605#endif 4708#endif
… …
3642 4745
3643 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4746 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3644} 4747}
3645 4748
3646void 4749void
3647ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4750ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3648{ 4751{
3649 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4752 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3650 4753
3651 if (expect_false (!once)) 4754 if (expect_false (!once))
3652 { 4755 {
… …
3673} 4776}
3674 4777
3675/*****************************************************************************/ 4778/*****************************************************************************/
3676 4779
3677#if EV_WALK_ENABLE 4780#if EV_WALK_ENABLE
3678void 4781void ecb_cold
3679ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4782ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3680{ 4783{
3681 int i, j; 4784 int i, j;
3682 ev_watcher_list *wl, *wn; 4785 ev_watcher_list *wl, *wn;
3683 4786
3684 if (types & (EV_IO | EV_EMBED)) 4787 if (types & (EV_IO | EV_EMBED))
… …
3727 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4830 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3728#endif 4831#endif
3729 4832
3730#if EV_IDLE_ENABLE 4833#if EV_IDLE_ENABLE
3731 if (types & EV_IDLE) 4834 if (types & EV_IDLE)
3732 for (j = NUMPRI; i--; ) 4835 for (j = NUMPRI; j--; )
3733 for (i = idlecnt [j]; i--; ) 4836 for (i = idlecnt [j]; i--; )
3734 cb (EV_A_ EV_IDLE, idles [j][i]); 4837 cb (EV_A_ EV_IDLE, idles [j][i]);
3735#endif 4838#endif
3736 4839
3737#if EV_FORK_ENABLE 4840#if EV_FORK_ENABLE
… …
3790 4893
3791#if EV_MULTIPLICITY 4894#if EV_MULTIPLICITY
3792 #include "ev_wrap.h" 4895 #include "ev_wrap.h"
3793#endif 4896#endif
3794 4897
3795#ifdef __cplusplus
3796}
3797#endif
3798

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