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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 1.459 by root, Tue Oct 29 12:13:37 2013 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 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"
50# endif 46# endif
47
48#if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# 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
55# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
… …
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
233# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 255# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
… …
235# define EV_USE_CLOCK_SYSCALL 0 257# define EV_USE_CLOCK_SYSCALL 0
236# endif 258# endif
237#endif 259#endif
238 260
239#ifndef EV_USE_MONOTONIC 261#ifndef EV_USE_MONOTONIC
240# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 262# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
241# define EV_USE_MONOTONIC EV_FEATURE_OS 263# define EV_USE_MONOTONIC EV_FEATURE_OS
242# else 264# else
243# define EV_USE_MONOTONIC 0 265# define EV_USE_MONOTONIC 0
244# endif 266# endif
245#endif 267#endif
… …
332 354
333#ifndef EV_HEAP_CACHE_AT 355#ifndef EV_HEAP_CACHE_AT
334# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 356# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
335#endif 357#endif
336 358
359#ifdef ANDROID
360/* supposedly, android doesn't typedef fd_mask */
361# undef EV_USE_SELECT
362# define EV_USE_SELECT 0
363/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
364# undef EV_USE_CLOCK_SYSCALL
365# define EV_USE_CLOCK_SYSCALL 0
366#endif
367
368/* aix's poll.h seems to cause lots of trouble */
369#ifdef _AIX
370/* AIX has a completely broken poll.h header */
371# undef EV_USE_POLL
372# define EV_USE_POLL 0
373#endif
374
337/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 375/* 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. */ 376/* which makes programs even slower. might work on other unices, too. */
339#if EV_USE_CLOCK_SYSCALL 377#if EV_USE_CLOCK_SYSCALL
340# include <syscall.h> 378# include <sys/syscall.h>
341# ifdef SYS_clock_gettime 379# ifdef SYS_clock_gettime
342# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 380# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
343# undef EV_USE_MONOTONIC 381# undef EV_USE_MONOTONIC
344# define EV_USE_MONOTONIC 1 382# define EV_USE_MONOTONIC 1
345# else 383# else
… …
348# endif 386# endif
349#endif 387#endif
350 388
351/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 389/* this block fixes any misconfiguration where we know we run into trouble otherwise */
352 390
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 391#ifndef CLOCK_MONOTONIC
360# undef EV_USE_MONOTONIC 392# undef EV_USE_MONOTONIC
361# define EV_USE_MONOTONIC 0 393# define EV_USE_MONOTONIC 0
362#endif 394#endif
363 395
… …
370# undef EV_USE_INOTIFY 402# undef EV_USE_INOTIFY
371# define EV_USE_INOTIFY 0 403# define EV_USE_INOTIFY 0
372#endif 404#endif
373 405
374#if !EV_USE_NANOSLEEP 406#if !EV_USE_NANOSLEEP
375# ifndef _WIN32 407/* hp-ux has it in sys/time.h, which we unconditionally include above */
408# if !defined _WIN32 && !defined __hpux
376# include <sys/select.h> 409# include <sys/select.h>
377# endif 410# endif
378#endif 411#endif
379 412
380#if EV_USE_INOTIFY 413#if EV_USE_INOTIFY
381# include <sys/utsname.h>
382# include <sys/statfs.h> 414# include <sys/statfs.h>
383# include <sys/inotify.h> 415# include <sys/inotify.h>
384/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 416/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
385# ifndef IN_DONT_FOLLOW 417# ifndef IN_DONT_FOLLOW
386# undef EV_USE_INOTIFY 418# undef EV_USE_INOTIFY
387# define EV_USE_INOTIFY 0 419# define EV_USE_INOTIFY 0
388# endif 420# endif
389#endif
390
391#if EV_SELECT_IS_WINSOCKET
392# include <winsock.h>
393#endif 421#endif
394 422
395#if EV_USE_EVENTFD 423#if EV_USE_EVENTFD
396/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 424/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
397# include <stdint.h> 425# include <stdint.h>
… …
403# define EFD_CLOEXEC O_CLOEXEC 431# define EFD_CLOEXEC O_CLOEXEC
404# else 432# else
405# define EFD_CLOEXEC 02000000 433# define EFD_CLOEXEC 02000000
406# endif 434# endif
407# endif 435# endif
408# ifdef __cplusplus
409extern "C" {
410# endif
411int (eventfd) (unsigned int initval, int flags); 436EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
412# ifdef __cplusplus
413}
414# endif
415#endif 437#endif
416 438
417#if EV_USE_SIGNALFD 439#if EV_USE_SIGNALFD
418/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 440/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
419# include <stdint.h> 441# include <stdint.h>
… …
425# define SFD_CLOEXEC O_CLOEXEC 447# define SFD_CLOEXEC O_CLOEXEC
426# else 448# else
427# define SFD_CLOEXEC 02000000 449# define SFD_CLOEXEC 02000000
428# endif 450# endif
429# endif 451# endif
430# ifdef __cplusplus
431extern "C" {
432# endif
433int signalfd (int fd, const sigset_t *mask, int flags); 452EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
434 453
435struct signalfd_siginfo 454struct signalfd_siginfo
436{ 455{
437 uint32_t ssi_signo; 456 uint32_t ssi_signo;
438 char pad[128 - sizeof (uint32_t)]; 457 char pad[128 - sizeof (uint32_t)];
439}; 458};
440# ifdef __cplusplus
441}
442# endif 459#endif
443#endif
444
445 460
446/**/ 461/**/
447 462
448#if EV_VERIFY >= 3 463#if EV_VERIFY >= 3
449# define EV_FREQUENT_CHECK ev_verify (EV_A) 464# define EV_FREQUENT_CHECK ev_verify (EV_A)
450#else 465#else
451# define EV_FREQUENT_CHECK do { } while (0) 466# define EV_FREQUENT_CHECK do { } while (0)
452#endif 467#endif
453 468
454/* 469/*
455 * This is used to avoid floating point rounding problems. 470 * 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. 471 * This value is good at least till the year 4000.
460 * Better solutions welcome.
461 */ 472 */
462#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 473#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
474/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
463 475
464#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 476#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) */ 477#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
466 478
479#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
480#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
481
482/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
483/* ECB.H BEGIN */
484/*
485 * libecb - http://software.schmorp.de/pkg/libecb
486 *
487 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de>
488 * Copyright (©) 2011 Emanuele Giaquinta
489 * All rights reserved.
490 *
491 * Redistribution and use in source and binary forms, with or without modifica-
492 * tion, are permitted provided that the following conditions are met:
493 *
494 * 1. Redistributions of source code must retain the above copyright notice,
495 * this list of conditions and the following disclaimer.
496 *
497 * 2. Redistributions in binary form must reproduce the above copyright
498 * notice, this list of conditions and the following disclaimer in the
499 * documentation and/or other materials provided with the distribution.
500 *
501 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
502 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
503 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
504 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
505 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
506 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
507 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
508 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
509 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
510 * OF THE POSSIBILITY OF SUCH DAMAGE.
511 */
512
513#ifndef ECB_H
514#define ECB_H
515
516/* 16 bits major, 16 bits minor */
517#define ECB_VERSION 0x00010003
518
519#ifdef _WIN32
520 typedef signed char int8_t;
521 typedef unsigned char uint8_t;
522 typedef signed short int16_t;
523 typedef unsigned short uint16_t;
524 typedef signed int int32_t;
525 typedef unsigned int uint32_t;
467#if __GNUC__ >= 4 526 #if __GNUC__
468# define expect(expr,value) __builtin_expect ((expr),(value)) 527 typedef signed long long int64_t;
469# define noinline __attribute__ ((noinline)) 528 typedef unsigned long long uint64_t;
529 #else /* _MSC_VER || __BORLANDC__ */
530 typedef signed __int64 int64_t;
531 typedef unsigned __int64 uint64_t;
532 #endif
533 #ifdef _WIN64
534 #define ECB_PTRSIZE 8
535 typedef uint64_t uintptr_t;
536 typedef int64_t intptr_t;
537 #else
538 #define ECB_PTRSIZE 4
539 typedef uint32_t uintptr_t;
540 typedef int32_t intptr_t;
541 #endif
470#else 542#else
471# define expect(expr,value) (expr) 543 #include <inttypes.h>
472# define noinline 544 #if UINTMAX_MAX > 0xffffffffU
473# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 545 #define ECB_PTRSIZE 8
474# define inline 546 #else
547 #define ECB_PTRSIZE 4
548 #endif
475# endif 549#endif
550
551/* work around x32 idiocy by defining proper macros */
552#if __x86_64 || _M_AMD64
553 #if _ILP32
554 #define ECB_AMD64_X32 1
555 #else
556 #define ECB_AMD64 1
476#endif 557 #endif
558#endif
477 559
560/* many compilers define _GNUC_ to some versions but then only implement
561 * what their idiot authors think are the "more important" extensions,
562 * causing enormous grief in return for some better fake benchmark numbers.
563 * or so.
564 * we try to detect these and simply assume they are not gcc - if they have
565 * an issue with that they should have done it right in the first place.
566 */
567#ifndef ECB_GCC_VERSION
568 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
569 #define ECB_GCC_VERSION(major,minor) 0
570 #else
571 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
572 #endif
573#endif
574
575#define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */
576#define ECB_C99 (__STDC_VERSION__ >= 199901L)
577#define ECB_C11 (__STDC_VERSION__ >= 201112L)
578#define ECB_CPP (__cplusplus+0)
579#define ECB_CPP11 (__cplusplus >= 201103L)
580
581#if ECB_CPP
582 #define ECB_EXTERN_C extern "C"
583 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
584 #define ECB_EXTERN_C_END }
585#else
586 #define ECB_EXTERN_C extern
587 #define ECB_EXTERN_C_BEG
588 #define ECB_EXTERN_C_END
589#endif
590
591/*****************************************************************************/
592
593/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
594/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
595
596#if ECB_NO_THREADS
597 #define ECB_NO_SMP 1
598#endif
599
600#if ECB_NO_SMP
601 #define ECB_MEMORY_FENCE do { } while (0)
602#endif
603
604#ifndef ECB_MEMORY_FENCE
605 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
606 #if __i386 || __i386__
607 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
608 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
609 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
610 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
611 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
612 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
613 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
614 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
615 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
616 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
617 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
618 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
619 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
620 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
621 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
622 #elif __sparc || __sparc__
623 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
624 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
625 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
626 #elif defined __s390__ || defined __s390x__
627 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
628 #elif defined __mips__
629 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
630 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
631 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
632 #elif defined __alpha__
633 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
634 #elif defined __hppa__
635 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
636 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
637 #elif defined __ia64__
638 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
639 #elif defined __m68k__
640 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
641 #elif defined __m88k__
642 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
643 #elif defined __sh__
644 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
645 #endif
646 #endif
647#endif
648
649#ifndef ECB_MEMORY_FENCE
650 #if ECB_GCC_VERSION(4,7)
651 /* see comment below (stdatomic.h) about the C11 memory model. */
652 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
653
654 /* The __has_feature syntax from clang is so misdesigned that we cannot use it
655 * without risking compile time errors with other compilers. We *could*
656 * define our own ecb_clang_has_feature, but I just can't be bothered to work
657 * around this shit time and again.
658 * #elif defined __clang && __has_feature (cxx_atomic)
659 * // see comment below (stdatomic.h) about the C11 memory model.
660 * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
661 */
662
663 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
664 #define ECB_MEMORY_FENCE __sync_synchronize ()
665 #elif _MSC_VER >= 1400 /* VC++ 2005 */
666 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
667 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
668 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
669 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
670 #elif defined _WIN32
671 #include <WinNT.h>
672 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
673 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
674 #include <mbarrier.h>
675 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
676 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
677 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
678 #elif __xlC__
679 #define ECB_MEMORY_FENCE __sync ()
680 #endif
681#endif
682
683#ifndef ECB_MEMORY_FENCE
684 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
685 /* we assume that these memory fences work on all variables/all memory accesses, */
686 /* not just C11 atomics and atomic accesses */
687 #include <stdatomic.h>
688 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
689 /* any fence other than seq_cst, which isn't very efficient for us. */
690 /* Why that is, we don't know - either the C11 memory model is quite useless */
691 /* for most usages, or gcc and clang have a bug */
692 /* I *currently* lean towards the latter, and inefficiently implement */
693 /* all three of ecb's fences as a seq_cst fence */
694 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
695 #endif
696#endif
697
698#ifndef ECB_MEMORY_FENCE
699 #if !ECB_AVOID_PTHREADS
700 /*
701 * if you get undefined symbol references to pthread_mutex_lock,
702 * or failure to find pthread.h, then you should implement
703 * the ECB_MEMORY_FENCE operations for your cpu/compiler
704 * OR provide pthread.h and link against the posix thread library
705 * of your system.
706 */
707 #include <pthread.h>
708 #define ECB_NEEDS_PTHREADS 1
709 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
710
711 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
712 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
713 #endif
714#endif
715
716#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
717 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
718#endif
719
720#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
721 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
722#endif
723
724/*****************************************************************************/
725
726#if __cplusplus
727 #define ecb_inline static inline
728#elif ECB_GCC_VERSION(2,5)
729 #define ecb_inline static __inline__
730#elif ECB_C99
731 #define ecb_inline static inline
732#else
733 #define ecb_inline static
734#endif
735
736#if ECB_GCC_VERSION(3,3)
737 #define ecb_restrict __restrict__
738#elif ECB_C99
739 #define ecb_restrict restrict
740#else
741 #define ecb_restrict
742#endif
743
744typedef int ecb_bool;
745
746#define ECB_CONCAT_(a, b) a ## b
747#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
748#define ECB_STRINGIFY_(a) # a
749#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
750
751#define ecb_function_ ecb_inline
752
753#if ECB_GCC_VERSION(3,1)
754 #define ecb_attribute(attrlist) __attribute__(attrlist)
755 #define ecb_is_constant(expr) __builtin_constant_p (expr)
756 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
757 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
758#else
759 #define ecb_attribute(attrlist)
760 #define ecb_is_constant(expr) 0
761 #define ecb_expect(expr,value) (expr)
762 #define ecb_prefetch(addr,rw,locality)
763#endif
764
765/* no emulation for ecb_decltype */
766#if ECB_GCC_VERSION(4,5)
767 #define ecb_decltype(x) __decltype(x)
768#elif ECB_GCC_VERSION(3,0)
769 #define ecb_decltype(x) __typeof(x)
770#endif
771
772#define ecb_noinline ecb_attribute ((__noinline__))
773#define ecb_unused ecb_attribute ((__unused__))
774#define ecb_const ecb_attribute ((__const__))
775#define ecb_pure ecb_attribute ((__pure__))
776
777#if ECB_C11
778 #define ecb_noreturn _Noreturn
779#else
780 #define ecb_noreturn ecb_attribute ((__noreturn__))
781#endif
782
783#if ECB_GCC_VERSION(4,3)
784 #define ecb_artificial ecb_attribute ((__artificial__))
785 #define ecb_hot ecb_attribute ((__hot__))
786 #define ecb_cold ecb_attribute ((__cold__))
787#else
788 #define ecb_artificial
789 #define ecb_hot
790 #define ecb_cold
791#endif
792
793/* put around conditional expressions if you are very sure that the */
794/* expression is mostly true or mostly false. note that these return */
795/* booleans, not the expression. */
478#define expect_false(expr) expect ((expr) != 0, 0) 796#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
479#define expect_true(expr) expect ((expr) != 0, 1) 797#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
798/* for compatibility to the rest of the world */
799#define ecb_likely(expr) ecb_expect_true (expr)
800#define ecb_unlikely(expr) ecb_expect_false (expr)
801
802/* count trailing zero bits and count # of one bits */
803#if ECB_GCC_VERSION(3,4)
804 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
805 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
806 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
807 #define ecb_ctz32(x) __builtin_ctz (x)
808 #define ecb_ctz64(x) __builtin_ctzll (x)
809 #define ecb_popcount32(x) __builtin_popcount (x)
810 /* no popcountll */
811#else
812 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
813 ecb_function_ int
814 ecb_ctz32 (uint32_t x)
815 {
816 int r = 0;
817
818 x &= ~x + 1; /* this isolates the lowest bit */
819
820#if ECB_branchless_on_i386
821 r += !!(x & 0xaaaaaaaa) << 0;
822 r += !!(x & 0xcccccccc) << 1;
823 r += !!(x & 0xf0f0f0f0) << 2;
824 r += !!(x & 0xff00ff00) << 3;
825 r += !!(x & 0xffff0000) << 4;
826#else
827 if (x & 0xaaaaaaaa) r += 1;
828 if (x & 0xcccccccc) r += 2;
829 if (x & 0xf0f0f0f0) r += 4;
830 if (x & 0xff00ff00) r += 8;
831 if (x & 0xffff0000) r += 16;
832#endif
833
834 return r;
835 }
836
837 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
838 ecb_function_ int
839 ecb_ctz64 (uint64_t x)
840 {
841 int shift = x & 0xffffffffU ? 0 : 32;
842 return ecb_ctz32 (x >> shift) + shift;
843 }
844
845 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
846 ecb_function_ int
847 ecb_popcount32 (uint32_t x)
848 {
849 x -= (x >> 1) & 0x55555555;
850 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
851 x = ((x >> 4) + x) & 0x0f0f0f0f;
852 x *= 0x01010101;
853
854 return x >> 24;
855 }
856
857 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
858 ecb_function_ int ecb_ld32 (uint32_t x)
859 {
860 int r = 0;
861
862 if (x >> 16) { x >>= 16; r += 16; }
863 if (x >> 8) { x >>= 8; r += 8; }
864 if (x >> 4) { x >>= 4; r += 4; }
865 if (x >> 2) { x >>= 2; r += 2; }
866 if (x >> 1) { r += 1; }
867
868 return r;
869 }
870
871 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
872 ecb_function_ int ecb_ld64 (uint64_t x)
873 {
874 int r = 0;
875
876 if (x >> 32) { x >>= 32; r += 32; }
877
878 return r + ecb_ld32 (x);
879 }
880#endif
881
882ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;
883ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
884ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;
885ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
886
887ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
888ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
889{
890 return ( (x * 0x0802U & 0x22110U)
891 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
892}
893
894ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
895ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
896{
897 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
898 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
899 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
900 x = ( x >> 8 ) | ( x << 8);
901
902 return x;
903}
904
905ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
906ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
907{
908 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
909 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
910 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
911 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
912 x = ( x >> 16 ) | ( x << 16);
913
914 return x;
915}
916
917/* popcount64 is only available on 64 bit cpus as gcc builtin */
918/* so for this version we are lazy */
919ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
920ecb_function_ int
921ecb_popcount64 (uint64_t x)
922{
923 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
924}
925
926ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
927ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
928ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
929ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
930ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
931ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
932ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
933ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
934
935ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
936ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
937ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
938ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
939ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
940ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
941ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
942ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
943
944#if ECB_GCC_VERSION(4,3)
945 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
946 #define ecb_bswap32(x) __builtin_bswap32 (x)
947 #define ecb_bswap64(x) __builtin_bswap64 (x)
948#else
949 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
950 ecb_function_ uint16_t
951 ecb_bswap16 (uint16_t x)
952 {
953 return ecb_rotl16 (x, 8);
954 }
955
956 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
957 ecb_function_ uint32_t
958 ecb_bswap32 (uint32_t x)
959 {
960 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
961 }
962
963 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
964 ecb_function_ uint64_t
965 ecb_bswap64 (uint64_t x)
966 {
967 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
968 }
969#endif
970
971#if ECB_GCC_VERSION(4,5)
972 #define ecb_unreachable() __builtin_unreachable ()
973#else
974 /* this seems to work fine, but gcc always emits a warning for it :/ */
975 ecb_inline void ecb_unreachable (void) ecb_noreturn;
976 ecb_inline void ecb_unreachable (void) { }
977#endif
978
979/* try to tell the compiler that some condition is definitely true */
980#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
981
982ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
983ecb_inline unsigned char
984ecb_byteorder_helper (void)
985{
986 /* the union code still generates code under pressure in gcc, */
987 /* but less than using pointers, and always seems to */
988 /* successfully return a constant. */
989 /* the reason why we have this horrible preprocessor mess */
990 /* is to avoid it in all cases, at least on common architectures */
991 /* or when using a recent enough gcc version (>= 4.6) */
992#if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64
993 return 0x44;
994#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
995 return 0x44;
996#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
997 return 0x11;
998#else
999 union
1000 {
1001 uint32_t i;
1002 uint8_t c;
1003 } u = { 0x11223344 };
1004 return u.c;
1005#endif
1006}
1007
1008ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
1009ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
1010ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
1011ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
1012
1013#if ECB_GCC_VERSION(3,0) || ECB_C99
1014 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1015#else
1016 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1017#endif
1018
1019#if __cplusplus
1020 template<typename T>
1021 static inline T ecb_div_rd (T val, T div)
1022 {
1023 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1024 }
1025 template<typename T>
1026 static inline T ecb_div_ru (T val, T div)
1027 {
1028 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1029 }
1030#else
1031 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1032 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1033#endif
1034
1035#if ecb_cplusplus_does_not_suck
1036 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1037 template<typename T, int N>
1038 static inline int ecb_array_length (const T (&arr)[N])
1039 {
1040 return N;
1041 }
1042#else
1043 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1044#endif
1045
1046/*******************************************************************************/
1047/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1048
1049/* basically, everything uses "ieee pure-endian" floating point numbers */
1050/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1051#if 0 \
1052 || __i386 || __i386__ \
1053 || __amd64 || __amd64__ || __x86_64 || __x86_64__ \
1054 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1055 || defined __arm__ && defined __ARM_EABI__ \
1056 || defined __s390__ || defined __s390x__ \
1057 || defined __mips__ \
1058 || defined __alpha__ \
1059 || defined __hppa__ \
1060 || defined __ia64__ \
1061 || defined __m68k__ \
1062 || defined __m88k__ \
1063 || defined __sh__ \
1064 || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64
1065 #define ECB_STDFP 1
1066 #include <string.h> /* for memcpy */
1067#else
1068 #define ECB_STDFP 0
1069#endif
1070
1071#ifndef ECB_NO_LIBM
1072
1073 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1074
1075 #ifdef NEN
1076 #define ECB_NAN NAN
1077 #else
1078 #define ECB_NAN INFINITY
1079 #endif
1080
1081 /* converts an ieee half/binary16 to a float */
1082 ecb_function_ float ecb_binary16_to_float (uint16_t x) ecb_const;
1083 ecb_function_ float
1084 ecb_binary16_to_float (uint16_t x)
1085 {
1086 int e = (x >> 10) & 0x1f;
1087 int m = x & 0x3ff;
1088 float r;
1089
1090 if (!e ) r = ldexpf (m , -24);
1091 else if (e != 31) r = ldexpf (m + 0x400, e - 25);
1092 else if (m ) r = ECB_NAN;
1093 else r = INFINITY;
1094
1095 return x & 0x8000 ? -r : r;
1096 }
1097
1098 /* convert a float to ieee single/binary32 */
1099 ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const;
1100 ecb_function_ uint32_t
1101 ecb_float_to_binary32 (float x)
1102 {
1103 uint32_t r;
1104
1105 #if ECB_STDFP
1106 memcpy (&r, &x, 4);
1107 #else
1108 /* slow emulation, works for anything but -0 */
1109 uint32_t m;
1110 int e;
1111
1112 if (x == 0e0f ) return 0x00000000U;
1113 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1114 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1115 if (x != x ) return 0x7fbfffffU;
1116
1117 m = frexpf (x, &e) * 0x1000000U;
1118
1119 r = m & 0x80000000U;
1120
1121 if (r)
1122 m = -m;
1123
1124 if (e <= -126)
1125 {
1126 m &= 0xffffffU;
1127 m >>= (-125 - e);
1128 e = -126;
1129 }
1130
1131 r |= (e + 126) << 23;
1132 r |= m & 0x7fffffU;
1133 #endif
1134
1135 return r;
1136 }
1137
1138 /* converts an ieee single/binary32 to a float */
1139 ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const;
1140 ecb_function_ float
1141 ecb_binary32_to_float (uint32_t x)
1142 {
1143 float r;
1144
1145 #if ECB_STDFP
1146 memcpy (&r, &x, 4);
1147 #else
1148 /* emulation, only works for normals and subnormals and +0 */
1149 int neg = x >> 31;
1150 int e = (x >> 23) & 0xffU;
1151
1152 x &= 0x7fffffU;
1153
1154 if (e)
1155 x |= 0x800000U;
1156 else
1157 e = 1;
1158
1159 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1160 r = ldexpf (x * (0.5f / 0x800000U), e - 126);
1161
1162 r = neg ? -r : r;
1163 #endif
1164
1165 return r;
1166 }
1167
1168 /* convert a double to ieee double/binary64 */
1169 ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const;
1170 ecb_function_ uint64_t
1171 ecb_double_to_binary64 (double x)
1172 {
1173 uint64_t r;
1174
1175 #if ECB_STDFP
1176 memcpy (&r, &x, 8);
1177 #else
1178 /* slow emulation, works for anything but -0 */
1179 uint64_t m;
1180 int e;
1181
1182 if (x == 0e0 ) return 0x0000000000000000U;
1183 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1184 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1185 if (x != x ) return 0X7ff7ffffffffffffU;
1186
1187 m = frexp (x, &e) * 0x20000000000000U;
1188
1189 r = m & 0x8000000000000000;;
1190
1191 if (r)
1192 m = -m;
1193
1194 if (e <= -1022)
1195 {
1196 m &= 0x1fffffffffffffU;
1197 m >>= (-1021 - e);
1198 e = -1022;
1199 }
1200
1201 r |= ((uint64_t)(e + 1022)) << 52;
1202 r |= m & 0xfffffffffffffU;
1203 #endif
1204
1205 return r;
1206 }
1207
1208 /* converts an ieee double/binary64 to a double */
1209 ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const;
1210 ecb_function_ double
1211 ecb_binary64_to_double (uint64_t x)
1212 {
1213 double r;
1214
1215 #if ECB_STDFP
1216 memcpy (&r, &x, 8);
1217 #else
1218 /* emulation, only works for normals and subnormals and +0 */
1219 int neg = x >> 63;
1220 int e = (x >> 52) & 0x7ffU;
1221
1222 x &= 0xfffffffffffffU;
1223
1224 if (e)
1225 x |= 0x10000000000000U;
1226 else
1227 e = 1;
1228
1229 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1230 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1231
1232 r = neg ? -r : r;
1233 #endif
1234
1235 return r;
1236 }
1237
1238#endif
1239
1240#endif
1241
1242/* ECB.H END */
1243
1244#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1245/* if your architecture doesn't need memory fences, e.g. because it is
1246 * single-cpu/core, or if you use libev in a project that doesn't use libev
1247 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1248 * libev, in which cases the memory fences become nops.
1249 * alternatively, you can remove this #error and link against libpthread,
1250 * which will then provide the memory fences.
1251 */
1252# error "memory fences not defined for your architecture, please report"
1253#endif
1254
1255#ifndef ECB_MEMORY_FENCE
1256# define ECB_MEMORY_FENCE do { } while (0)
1257# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1258# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1259#endif
1260
1261#define expect_false(cond) ecb_expect_false (cond)
1262#define expect_true(cond) ecb_expect_true (cond)
1263#define noinline ecb_noinline
1264
480#define inline_size static inline 1265#define inline_size ecb_inline
481 1266
482#if EV_FEATURE_CODE 1267#if EV_FEATURE_CODE
483# define inline_speed static inline 1268# define inline_speed ecb_inline
484#else 1269#else
485# define inline_speed static noinline 1270# define inline_speed static noinline
486#endif 1271#endif
487 1272
488#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1273#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
… …
503#define ev_active(w) ((W)(w))->active 1288#define ev_active(w) ((W)(w))->active
504#define ev_at(w) ((WT)(w))->at 1289#define ev_at(w) ((WT)(w))->at
505 1290
506#if EV_USE_REALTIME 1291#if EV_USE_REALTIME
507/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1292/* 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 */ 1293/* giving it a reasonably high chance of working on typical architectures */
509static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1294static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
510#endif 1295#endif
511 1296
512#if EV_USE_MONOTONIC 1297#if EV_USE_MONOTONIC
513static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1298static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
… …
527# include "ev_win32.c" 1312# include "ev_win32.c"
528#endif 1313#endif
529 1314
530/*****************************************************************************/ 1315/*****************************************************************************/
531 1316
1317/* define a suitable floor function (only used by periodics atm) */
1318
1319#if EV_USE_FLOOR
1320# include <math.h>
1321# define ev_floor(v) floor (v)
1322#else
1323
1324#include <float.h>
1325
1326/* a floor() replacement function, should be independent of ev_tstamp type */
1327static ev_tstamp noinline
1328ev_floor (ev_tstamp v)
1329{
1330 /* the choice of shift factor is not terribly important */
1331#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1332 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1333#else
1334 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1335#endif
1336
1337 /* argument too large for an unsigned long? */
1338 if (expect_false (v >= shift))
1339 {
1340 ev_tstamp f;
1341
1342 if (v == v - 1.)
1343 return v; /* very large number */
1344
1345 f = shift * ev_floor (v * (1. / shift));
1346 return f + ev_floor (v - f);
1347 }
1348
1349 /* special treatment for negative args? */
1350 if (expect_false (v < 0.))
1351 {
1352 ev_tstamp f = -ev_floor (-v);
1353
1354 return f - (f == v ? 0 : 1);
1355 }
1356
1357 /* fits into an unsigned long */
1358 return (unsigned long)v;
1359}
1360
1361#endif
1362
1363/*****************************************************************************/
1364
1365#ifdef __linux
1366# include <sys/utsname.h>
1367#endif
1368
1369static unsigned int noinline ecb_cold
1370ev_linux_version (void)
1371{
1372#ifdef __linux
1373 unsigned int v = 0;
1374 struct utsname buf;
1375 int i;
1376 char *p = buf.release;
1377
1378 if (uname (&buf))
1379 return 0;
1380
1381 for (i = 3+1; --i; )
1382 {
1383 unsigned int c = 0;
1384
1385 for (;;)
1386 {
1387 if (*p >= '0' && *p <= '9')
1388 c = c * 10 + *p++ - '0';
1389 else
1390 {
1391 p += *p == '.';
1392 break;
1393 }
1394 }
1395
1396 v = (v << 8) | c;
1397 }
1398
1399 return v;
1400#else
1401 return 0;
1402#endif
1403}
1404
1405/*****************************************************************************/
1406
532#if EV_AVOID_STDIO 1407#if EV_AVOID_STDIO
533static void noinline 1408static void noinline ecb_cold
534ev_printerr (const char *msg) 1409ev_printerr (const char *msg)
535{ 1410{
536 write (STDERR_FILENO, msg, strlen (msg)); 1411 write (STDERR_FILENO, msg, strlen (msg));
537} 1412}
538#endif 1413#endif
539 1414
540static void (*syserr_cb)(const char *msg); 1415static void (*syserr_cb)(const char *msg) EV_THROW;
541 1416
542void 1417void ecb_cold
543ev_set_syserr_cb (void (*cb)(const char *msg)) 1418ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
544{ 1419{
545 syserr_cb = cb; 1420 syserr_cb = cb;
546} 1421}
547 1422
548static void noinline 1423static void noinline ecb_cold
549ev_syserr (const char *msg) 1424ev_syserr (const char *msg)
550{ 1425{
551 if (!msg) 1426 if (!msg)
552 msg = "(libev) system error"; 1427 msg = "(libev) system error";
553 1428
554 if (syserr_cb) 1429 if (syserr_cb)
555 syserr_cb (msg); 1430 syserr_cb (msg);
556 else 1431 else
557 { 1432 {
558#if EV_AVOID_STDIO 1433#if EV_AVOID_STDIO
559 const char *err = strerror (errno);
560
561 ev_printerr (msg); 1434 ev_printerr (msg);
562 ev_printerr (": "); 1435 ev_printerr (": ");
563 ev_printerr (err); 1436 ev_printerr (strerror (errno));
564 ev_printerr ("\n"); 1437 ev_printerr ("\n");
565#else 1438#else
566 perror (msg); 1439 perror (msg);
567#endif 1440#endif
568 abort (); 1441 abort ();
569 } 1442 }
570} 1443}
571 1444
572static void * 1445static void *
573ev_realloc_emul (void *ptr, long size) 1446ev_realloc_emul (void *ptr, long size) EV_THROW
574{ 1447{
575#if __GLIBC__
576 return realloc (ptr, size);
577#else
578 /* some systems, notably openbsd and darwin, fail to properly 1448 /* some systems, notably openbsd and darwin, fail to properly
579 * implement realloc (x, 0) (as required by both ansi c-89 and 1449 * implement realloc (x, 0) (as required by both ansi c-89 and
580 * the single unix specification, so work around them here. 1450 * the single unix specification, so work around them here.
1451 * recently, also (at least) fedora and debian started breaking it,
1452 * despite documenting it otherwise.
581 */ 1453 */
582 1454
583 if (size) 1455 if (size)
584 return realloc (ptr, size); 1456 return realloc (ptr, size);
585 1457
586 free (ptr); 1458 free (ptr);
587 return 0; 1459 return 0;
588#endif
589} 1460}
590 1461
591static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1462static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
592 1463
593void 1464void ecb_cold
594ev_set_allocator (void *(*cb)(void *ptr, long size)) 1465ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
595{ 1466{
596 alloc = cb; 1467 alloc = cb;
597} 1468}
598 1469
599inline_speed void * 1470inline_speed void *
… …
602 ptr = alloc (ptr, size); 1473 ptr = alloc (ptr, size);
603 1474
604 if (!ptr && size) 1475 if (!ptr && size)
605 { 1476 {
606#if EV_AVOID_STDIO 1477#if EV_AVOID_STDIO
607 ev_printerr ("libev: memory allocation failed, aborting.\n"); 1478 ev_printerr ("(libev) memory allocation failed, aborting.\n");
608#else 1479#else
609 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1480 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
610#endif 1481#endif
611 abort (); 1482 abort ();
612 } 1483 }
613 1484
614 return ptr; 1485 return ptr;
… …
631 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1502 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
632 unsigned char unused; 1503 unsigned char unused;
633#if EV_USE_EPOLL 1504#if EV_USE_EPOLL
634 unsigned int egen; /* generation counter to counter epoll bugs */ 1505 unsigned int egen; /* generation counter to counter epoll bugs */
635#endif 1506#endif
636#if EV_SELECT_IS_WINSOCKET 1507#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
637 SOCKET handle; 1508 SOCKET handle;
1509#endif
1510#if EV_USE_IOCP
1511 OVERLAPPED or, ow;
638#endif 1512#endif
639} ANFD; 1513} ANFD;
640 1514
641/* stores the pending event set for a given watcher */ 1515/* stores the pending event set for a given watcher */
642typedef struct 1516typedef struct
… …
684 #undef VAR 1558 #undef VAR
685 }; 1559 };
686 #include "ev_wrap.h" 1560 #include "ev_wrap.h"
687 1561
688 static struct ev_loop default_loop_struct; 1562 static struct ev_loop default_loop_struct;
689 struct ev_loop *ev_default_loop_ptr; 1563 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
690 1564
691#else 1565#else
692 1566
693 ev_tstamp ev_rt_now; 1567 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; 1568 #define VAR(name,decl) static decl;
695 #include "ev_vars.h" 1569 #include "ev_vars.h"
696 #undef VAR 1570 #undef VAR
697 1571
698 static int ev_default_loop_ptr; 1572 static int ev_default_loop_ptr;
… …
707# define EV_RELEASE_CB (void)0 1581# define EV_RELEASE_CB (void)0
708# define EV_ACQUIRE_CB (void)0 1582# define EV_ACQUIRE_CB (void)0
709# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1583# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
710#endif 1584#endif
711 1585
712#define EVUNLOOP_RECURSE 0x80 1586#define EVBREAK_RECURSE 0x80
713 1587
714/*****************************************************************************/ 1588/*****************************************************************************/
715 1589
716#ifndef EV_HAVE_EV_TIME 1590#ifndef EV_HAVE_EV_TIME
717ev_tstamp 1591ev_tstamp
718ev_time (void) 1592ev_time (void) EV_THROW
719{ 1593{
720#if EV_USE_REALTIME 1594#if EV_USE_REALTIME
721 if (expect_true (have_realtime)) 1595 if (expect_true (have_realtime))
722 { 1596 {
723 struct timespec ts; 1597 struct timespec ts;
… …
747 return ev_time (); 1621 return ev_time ();
748} 1622}
749 1623
750#if EV_MULTIPLICITY 1624#if EV_MULTIPLICITY
751ev_tstamp 1625ev_tstamp
752ev_now (EV_P) 1626ev_now (EV_P) EV_THROW
753{ 1627{
754 return ev_rt_now; 1628 return ev_rt_now;
755} 1629}
756#endif 1630#endif
757 1631
758void 1632void
759ev_sleep (ev_tstamp delay) 1633ev_sleep (ev_tstamp delay) EV_THROW
760{ 1634{
761 if (delay > 0.) 1635 if (delay > 0.)
762 { 1636 {
763#if EV_USE_NANOSLEEP 1637#if EV_USE_NANOSLEEP
764 struct timespec ts; 1638 struct timespec ts;
765 1639
766 ts.tv_sec = (time_t)delay; 1640 EV_TS_SET (ts, delay);
767 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
768
769 nanosleep (&ts, 0); 1641 nanosleep (&ts, 0);
770#elif defined(_WIN32) 1642#elif defined _WIN32
771 Sleep ((unsigned long)(delay * 1e3)); 1643 Sleep ((unsigned long)(delay * 1e3));
772#else 1644#else
773 struct timeval tv; 1645 struct timeval tv;
774 1646
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 */ 1647 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
779 /* something not guaranteed by newer posix versions, but guaranteed */ 1648 /* something not guaranteed by newer posix versions, but guaranteed */
780 /* by older ones */ 1649 /* by older ones */
1650 EV_TV_SET (tv, delay);
781 select (0, 0, 0, 0, &tv); 1651 select (0, 0, 0, 0, &tv);
782#endif 1652#endif
783 } 1653 }
784} 1654}
785 1655
786/*****************************************************************************/ 1656/*****************************************************************************/
787 1657
788#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1658#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
789 1659
790/* find a suitable new size for the given array, */ 1660/* find a suitable new size for the given array, */
791/* hopefully by rounding to a ncie-to-malloc size */ 1661/* hopefully by rounding to a nice-to-malloc size */
792inline_size int 1662inline_size int
793array_nextsize (int elem, int cur, int cnt) 1663array_nextsize (int elem, int cur, int cnt)
794{ 1664{
795 int ncur = cur + 1; 1665 int ncur = cur + 1;
796 1666
797 do 1667 do
798 ncur <<= 1; 1668 ncur <<= 1;
799 while (cnt > ncur); 1669 while (cnt > ncur);
800 1670
801 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1671 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
802 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1672 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
803 { 1673 {
804 ncur *= elem; 1674 ncur *= elem;
805 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1675 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
806 ncur = ncur - sizeof (void *) * 4; 1676 ncur = ncur - sizeof (void *) * 4;
… …
808 } 1678 }
809 1679
810 return ncur; 1680 return ncur;
811} 1681}
812 1682
813static noinline void * 1683static void * noinline ecb_cold
814array_realloc (int elem, void *base, int *cur, int cnt) 1684array_realloc (int elem, void *base, int *cur, int cnt)
815{ 1685{
816 *cur = array_nextsize (elem, *cur, cnt); 1686 *cur = array_nextsize (elem, *cur, cnt);
817 return ev_realloc (base, elem * *cur); 1687 return ev_realloc (base, elem * *cur);
818} 1688}
… …
821 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1691 memset ((void *)(base), 0, sizeof (*(base)) * (count))
822 1692
823#define array_needsize(type,base,cur,cnt,init) \ 1693#define array_needsize(type,base,cur,cnt,init) \
824 if (expect_false ((cnt) > (cur))) \ 1694 if (expect_false ((cnt) > (cur))) \
825 { \ 1695 { \
826 int ocur_ = (cur); \ 1696 int ecb_unused ocur_ = (cur); \
827 (base) = (type *)array_realloc \ 1697 (base) = (type *)array_realloc \
828 (sizeof (type), (base), &(cur), (cnt)); \ 1698 (sizeof (type), (base), &(cur), (cnt)); \
829 init ((base) + (ocur_), (cur) - ocur_); \ 1699 init ((base) + (ocur_), (cur) - ocur_); \
830 } 1700 }
831 1701
… …
849pendingcb (EV_P_ ev_prepare *w, int revents) 1719pendingcb (EV_P_ ev_prepare *w, int revents)
850{ 1720{
851} 1721}
852 1722
853void noinline 1723void noinline
854ev_feed_event (EV_P_ void *w, int revents) 1724ev_feed_event (EV_P_ void *w, int revents) EV_THROW
855{ 1725{
856 W w_ = (W)w; 1726 W w_ = (W)w;
857 int pri = ABSPRI (w_); 1727 int pri = ABSPRI (w_);
858 1728
859 if (expect_false (w_->pending)) 1729 if (expect_false (w_->pending))
… …
863 w_->pending = ++pendingcnt [pri]; 1733 w_->pending = ++pendingcnt [pri];
864 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1734 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
865 pendings [pri][w_->pending - 1].w = w_; 1735 pendings [pri][w_->pending - 1].w = w_;
866 pendings [pri][w_->pending - 1].events = revents; 1736 pendings [pri][w_->pending - 1].events = revents;
867 } 1737 }
1738
1739 pendingpri = NUMPRI - 1;
868} 1740}
869 1741
870inline_speed void 1742inline_speed void
871feed_reverse (EV_P_ W w) 1743feed_reverse (EV_P_ W w)
872{ 1744{
… …
918 if (expect_true (!anfd->reify)) 1790 if (expect_true (!anfd->reify))
919 fd_event_nocheck (EV_A_ fd, revents); 1791 fd_event_nocheck (EV_A_ fd, revents);
920} 1792}
921 1793
922void 1794void
923ev_feed_fd_event (EV_P_ int fd, int revents) 1795ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
924{ 1796{
925 if (fd >= 0 && fd < anfdmax) 1797 if (fd >= 0 && fd < anfdmax)
926 fd_event_nocheck (EV_A_ fd, revents); 1798 fd_event_nocheck (EV_A_ fd, revents);
927} 1799}
928 1800
… …
931inline_size void 1803inline_size void
932fd_reify (EV_P) 1804fd_reify (EV_P)
933{ 1805{
934 int i; 1806 int i;
935 1807
1808#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1809 for (i = 0; i < fdchangecnt; ++i)
1810 {
1811 int fd = fdchanges [i];
1812 ANFD *anfd = anfds + fd;
1813
1814 if (anfd->reify & EV__IOFDSET && anfd->head)
1815 {
1816 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1817
1818 if (handle != anfd->handle)
1819 {
1820 unsigned long arg;
1821
1822 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1823
1824 /* handle changed, but fd didn't - we need to do it in two steps */
1825 backend_modify (EV_A_ fd, anfd->events, 0);
1826 anfd->events = 0;
1827 anfd->handle = handle;
1828 }
1829 }
1830 }
1831#endif
1832
936 for (i = 0; i < fdchangecnt; ++i) 1833 for (i = 0; i < fdchangecnt; ++i)
937 { 1834 {
938 int fd = fdchanges [i]; 1835 int fd = fdchanges [i];
939 ANFD *anfd = anfds + fd; 1836 ANFD *anfd = anfds + fd;
940 ev_io *w; 1837 ev_io *w;
941 1838
942 unsigned char events = 0; 1839 unsigned char o_events = anfd->events;
1840 unsigned char o_reify = anfd->reify;
943 1841
944 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1842 anfd->reify = 0;
945 events |= (unsigned char)w->events;
946 1843
947#if EV_SELECT_IS_WINSOCKET 1844 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
948 if (events)
949 { 1845 {
950 unsigned long arg; 1846 anfd->events = 0;
951 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1847
952 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1848 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1849 anfd->events |= (unsigned char)w->events;
1850
1851 if (o_events != anfd->events)
1852 o_reify = EV__IOFDSET; /* actually |= */
953 } 1853 }
954#endif
955 1854
956 { 1855 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); 1856 backend_modify (EV_A_ fd, o_events, anfd->events);
965 }
966 } 1857 }
967 1858
968 fdchangecnt = 0; 1859 fdchangecnt = 0;
969} 1860}
970 1861
… …
982 fdchanges [fdchangecnt - 1] = fd; 1873 fdchanges [fdchangecnt - 1] = fd;
983 } 1874 }
984} 1875}
985 1876
986/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1877/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
987inline_speed void 1878inline_speed void ecb_cold
988fd_kill (EV_P_ int fd) 1879fd_kill (EV_P_ int fd)
989{ 1880{
990 ev_io *w; 1881 ev_io *w;
991 1882
992 while ((w = (ev_io *)anfds [fd].head)) 1883 while ((w = (ev_io *)anfds [fd].head))
… …
995 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1886 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
996 } 1887 }
997} 1888}
998 1889
999/* check whether the given fd is actually valid, for error recovery */ 1890/* check whether the given fd is actually valid, for error recovery */
1000inline_size int 1891inline_size int ecb_cold
1001fd_valid (int fd) 1892fd_valid (int fd)
1002{ 1893{
1003#ifdef _WIN32 1894#ifdef _WIN32
1004 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 1895 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1005#else 1896#else
1006 return fcntl (fd, F_GETFD) != -1; 1897 return fcntl (fd, F_GETFD) != -1;
1007#endif 1898#endif
1008} 1899}
1009 1900
1010/* called on EBADF to verify fds */ 1901/* called on EBADF to verify fds */
1011static void noinline 1902static void noinline ecb_cold
1012fd_ebadf (EV_P) 1903fd_ebadf (EV_P)
1013{ 1904{
1014 int fd; 1905 int fd;
1015 1906
1016 for (fd = 0; fd < anfdmax; ++fd) 1907 for (fd = 0; fd < anfdmax; ++fd)
… …
1018 if (!fd_valid (fd) && errno == EBADF) 1909 if (!fd_valid (fd) && errno == EBADF)
1019 fd_kill (EV_A_ fd); 1910 fd_kill (EV_A_ fd);
1020} 1911}
1021 1912
1022/* called on ENOMEM in select/poll to kill some fds and retry */ 1913/* called on ENOMEM in select/poll to kill some fds and retry */
1023static void noinline 1914static void noinline ecb_cold
1024fd_enomem (EV_P) 1915fd_enomem (EV_P)
1025{ 1916{
1026 int fd; 1917 int fd;
1027 1918
1028 for (fd = anfdmax; fd--; ) 1919 for (fd = anfdmax; fd--; )
… …
1063} 1954}
1064 1955
1065/*****************************************************************************/ 1956/*****************************************************************************/
1066 1957
1067/* 1958/*
1068 * the heap functions want a real array index. array index 0 uis guaranteed to not 1959 * 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 1960 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1070 * the branching factor of the d-tree. 1961 * the branching factor of the d-tree.
1071 */ 1962 */
1072 1963
1073/* 1964/*
… …
1223 2114
1224/*****************************************************************************/ 2115/*****************************************************************************/
1225 2116
1226#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2117#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1227 2118
1228static void noinline 2119static void noinline ecb_cold
1229evpipe_init (EV_P) 2120evpipe_init (EV_P)
1230{ 2121{
1231 if (!ev_is_active (&pipe_w)) 2122 if (!ev_is_active (&pipe_w))
1232 { 2123 {
2124 int fds [2];
2125
1233# if EV_USE_EVENTFD 2126# if EV_USE_EVENTFD
2127 fds [0] = -1;
1234 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2128 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1235 if (evfd < 0 && errno == EINVAL) 2129 if (fds [1] < 0 && errno == EINVAL)
1236 evfd = eventfd (0, 0); 2130 fds [1] = eventfd (0, 0);
1237 2131
1238 if (evfd >= 0) 2132 if (fds [1] < 0)
2133# endif
1239 { 2134 {
2135 while (pipe (fds))
2136 ev_syserr ("(libev) error creating signal/async pipe");
2137
2138 fd_intern (fds [0]);
2139 }
2140
1240 evpipe [0] = -1; 2141 evpipe [0] = fds [0];
1241 fd_intern (evfd); /* doing it twice doesn't hurt */ 2142
1242 ev_io_set (&pipe_w, evfd, EV_READ); 2143 if (evpipe [1] < 0)
2144 evpipe [1] = fds [1]; /* first call, set write fd */
2145 else
2146 {
2147 /* on subsequent calls, do not change evpipe [1] */
2148 /* so that evpipe_write can always rely on its value. */
2149 /* this branch does not do anything sensible on windows, */
2150 /* so must not be executed on windows */
2151
2152 dup2 (fds [1], evpipe [1]);
2153 close (fds [1]);
2154 }
2155
2156 fd_intern (evpipe [1]);
2157
2158 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2159 ev_io_start (EV_A_ &pipe_w);
2160 ev_unref (EV_A); /* watcher should not keep loop alive */
2161 }
2162}
2163
2164inline_speed void
2165evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2166{
2167 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2168
2169 if (expect_true (*flag))
2170 return;
2171
2172 *flag = 1;
2173 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2174
2175 pipe_write_skipped = 1;
2176
2177 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2178
2179 if (pipe_write_wanted)
2180 {
2181 int old_errno;
2182
2183 pipe_write_skipped = 0;
2184 ECB_MEMORY_FENCE_RELEASE;
2185
2186 old_errno = errno; /* save errno because write will clobber it */
2187
2188#if EV_USE_EVENTFD
2189 if (evpipe [0] < 0)
2190 {
2191 uint64_t counter = 1;
2192 write (evpipe [1], &counter, sizeof (uint64_t));
1243 } 2193 }
1244 else 2194 else
1245# endif 2195#endif
1246 { 2196 {
1247 while (pipe (evpipe)) 2197#ifdef _WIN32
1248 ev_syserr ("(libev) error creating signal/async pipe"); 2198 WSABUF buf;
1249 2199 DWORD sent;
1250 fd_intern (evpipe [0]); 2200 buf.buf = &buf;
1251 fd_intern (evpipe [1]); 2201 buf.len = 1;
1252 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2202 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2203#else
2204 write (evpipe [1], &(evpipe [1]), 1);
2205#endif
1253 } 2206 }
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 2207
1280 errno = old_errno; 2208 errno = old_errno;
1281 } 2209 }
1282} 2210}
1283 2211
… …
1286static void 2214static void
1287pipecb (EV_P_ ev_io *iow, int revents) 2215pipecb (EV_P_ ev_io *iow, int revents)
1288{ 2216{
1289 int i; 2217 int i;
1290 2218
2219 if (revents & EV_READ)
2220 {
1291#if EV_USE_EVENTFD 2221#if EV_USE_EVENTFD
1292 if (evfd >= 0) 2222 if (evpipe [0] < 0)
1293 { 2223 {
1294 uint64_t counter; 2224 uint64_t counter;
1295 read (evfd, &counter, sizeof (uint64_t)); 2225 read (evpipe [1], &counter, sizeof (uint64_t));
1296 } 2226 }
1297 else 2227 else
1298#endif 2228#endif
1299 { 2229 {
1300 char dummy; 2230 char dummy[4];
2231#ifdef _WIN32
2232 WSABUF buf;
2233 DWORD recvd;
2234 DWORD flags = 0;
2235 buf.buf = dummy;
2236 buf.len = sizeof (dummy);
2237 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2238#else
1301 read (evpipe [0], &dummy, 1); 2239 read (evpipe [0], &dummy, sizeof (dummy));
2240#endif
2241 }
1302 } 2242 }
1303 2243
2244 pipe_write_skipped = 0;
2245
2246 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2247
2248#if EV_SIGNAL_ENABLE
1304 if (sig_pending) 2249 if (sig_pending)
1305 { 2250 {
1306 sig_pending = 0; 2251 sig_pending = 0;
2252
2253 ECB_MEMORY_FENCE;
1307 2254
1308 for (i = EV_NSIG - 1; i--; ) 2255 for (i = EV_NSIG - 1; i--; )
1309 if (expect_false (signals [i].pending)) 2256 if (expect_false (signals [i].pending))
1310 ev_feed_signal_event (EV_A_ i + 1); 2257 ev_feed_signal_event (EV_A_ i + 1);
1311 } 2258 }
2259#endif
1312 2260
1313#if EV_ASYNC_ENABLE 2261#if EV_ASYNC_ENABLE
1314 if (async_pending) 2262 if (async_pending)
1315 { 2263 {
1316 async_pending = 0; 2264 async_pending = 0;
2265
2266 ECB_MEMORY_FENCE;
1317 2267
1318 for (i = asynccnt; i--; ) 2268 for (i = asynccnt; i--; )
1319 if (asyncs [i]->sent) 2269 if (asyncs [i]->sent)
1320 { 2270 {
1321 asyncs [i]->sent = 0; 2271 asyncs [i]->sent = 0;
2272 ECB_MEMORY_FENCE_RELEASE;
1322 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2273 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1323 } 2274 }
1324 } 2275 }
1325#endif 2276#endif
1326} 2277}
1327 2278
1328/*****************************************************************************/ 2279/*****************************************************************************/
1329 2280
2281void
2282ev_feed_signal (int signum) EV_THROW
2283{
2284#if EV_MULTIPLICITY
2285 EV_P;
2286 ECB_MEMORY_FENCE_ACQUIRE;
2287 EV_A = signals [signum - 1].loop;
2288
2289 if (!EV_A)
2290 return;
2291#endif
2292
2293 signals [signum - 1].pending = 1;
2294 evpipe_write (EV_A_ &sig_pending);
2295}
2296
1330static void 2297static void
1331ev_sighandler (int signum) 2298ev_sighandler (int signum)
1332{ 2299{
1333#if EV_MULTIPLICITY
1334 EV_P = signals [signum - 1].loop;
1335#endif
1336
1337#ifdef _WIN32 2300#ifdef _WIN32
1338 signal (signum, ev_sighandler); 2301 signal (signum, ev_sighandler);
1339#endif 2302#endif
1340 2303
1341 signals [signum - 1].pending = 1; 2304 ev_feed_signal (signum);
1342 evpipe_write (EV_A_ &sig_pending);
1343} 2305}
1344 2306
1345void noinline 2307void noinline
1346ev_feed_signal_event (EV_P_ int signum) 2308ev_feed_signal_event (EV_P_ int signum) EV_THROW
1347{ 2309{
1348 WL w; 2310 WL w;
1349 2311
1350 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2312 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1351 return; 2313 return;
1352 2314
1353 --signum; 2315 --signum;
1354 2316
1355#if EV_MULTIPLICITY 2317#if EV_MULTIPLICITY
… …
1359 if (expect_false (signals [signum].loop != EV_A)) 2321 if (expect_false (signals [signum].loop != EV_A))
1360 return; 2322 return;
1361#endif 2323#endif
1362 2324
1363 signals [signum].pending = 0; 2325 signals [signum].pending = 0;
2326 ECB_MEMORY_FENCE_RELEASE;
1364 2327
1365 for (w = signals [signum].head; w; w = w->next) 2328 for (w = signals [signum].head; w; w = w->next)
1366 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2329 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1367} 2330}
1368 2331
… …
1447 2410
1448#endif 2411#endif
1449 2412
1450/*****************************************************************************/ 2413/*****************************************************************************/
1451 2414
2415#if EV_USE_IOCP
2416# include "ev_iocp.c"
2417#endif
1452#if EV_USE_PORT 2418#if EV_USE_PORT
1453# include "ev_port.c" 2419# include "ev_port.c"
1454#endif 2420#endif
1455#if EV_USE_KQUEUE 2421#if EV_USE_KQUEUE
1456# include "ev_kqueue.c" 2422# include "ev_kqueue.c"
… …
1463#endif 2429#endif
1464#if EV_USE_SELECT 2430#if EV_USE_SELECT
1465# include "ev_select.c" 2431# include "ev_select.c"
1466#endif 2432#endif
1467 2433
1468int 2434int ecb_cold
1469ev_version_major (void) 2435ev_version_major (void) EV_THROW
1470{ 2436{
1471 return EV_VERSION_MAJOR; 2437 return EV_VERSION_MAJOR;
1472} 2438}
1473 2439
1474int 2440int ecb_cold
1475ev_version_minor (void) 2441ev_version_minor (void) EV_THROW
1476{ 2442{
1477 return EV_VERSION_MINOR; 2443 return EV_VERSION_MINOR;
1478} 2444}
1479 2445
1480/* return true if we are running with elevated privileges and should ignore env variables */ 2446/* return true if we are running with elevated privileges and should ignore env variables */
1481int inline_size 2447int inline_size ecb_cold
1482enable_secure (void) 2448enable_secure (void)
1483{ 2449{
1484#ifdef _WIN32 2450#ifdef _WIN32
1485 return 0; 2451 return 0;
1486#else 2452#else
1487 return getuid () != geteuid () 2453 return getuid () != geteuid ()
1488 || getgid () != getegid (); 2454 || getgid () != getegid ();
1489#endif 2455#endif
1490} 2456}
1491 2457
1492unsigned int 2458unsigned int ecb_cold
1493ev_supported_backends (void) 2459ev_supported_backends (void) EV_THROW
1494{ 2460{
1495 unsigned int flags = 0; 2461 unsigned int flags = 0;
1496 2462
1497 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2463 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1498 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2464 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1501 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2467 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1502 2468
1503 return flags; 2469 return flags;
1504} 2470}
1505 2471
1506unsigned int 2472unsigned int ecb_cold
1507ev_recommended_backends (void) 2473ev_recommended_backends (void) EV_THROW
1508{ 2474{
1509 unsigned int flags = ev_supported_backends (); 2475 unsigned int flags = ev_supported_backends ();
1510 2476
1511#ifndef __NetBSD__ 2477#ifndef __NetBSD__
1512 /* kqueue is borked on everything but netbsd apparently */ 2478 /* kqueue is borked on everything but netbsd apparently */
… …
1523#endif 2489#endif
1524 2490
1525 return flags; 2491 return flags;
1526} 2492}
1527 2493
2494unsigned int ecb_cold
2495ev_embeddable_backends (void) EV_THROW
2496{
2497 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2498
2499 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2500 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2501 flags &= ~EVBACKEND_EPOLL;
2502
2503 return flags;
2504}
2505
1528unsigned int 2506unsigned 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) 2507ev_backend (EV_P) EV_THROW
1542{ 2508{
1543 return backend; 2509 return backend;
1544} 2510}
1545 2511
1546#if EV_FEATURE_API 2512#if EV_FEATURE_API
1547unsigned int 2513unsigned int
1548ev_iteration (EV_P) 2514ev_iteration (EV_P) EV_THROW
1549{ 2515{
1550 return loop_count; 2516 return loop_count;
1551} 2517}
1552 2518
1553unsigned int 2519unsigned int
1554ev_depth (EV_P) 2520ev_depth (EV_P) EV_THROW
1555{ 2521{
1556 return loop_depth; 2522 return loop_depth;
1557} 2523}
1558 2524
1559void 2525void
1560ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2526ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1561{ 2527{
1562 io_blocktime = interval; 2528 io_blocktime = interval;
1563} 2529}
1564 2530
1565void 2531void
1566ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2532ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1567{ 2533{
1568 timeout_blocktime = interval; 2534 timeout_blocktime = interval;
1569} 2535}
1570 2536
1571void 2537void
1572ev_set_userdata (EV_P_ void *data) 2538ev_set_userdata (EV_P_ void *data) EV_THROW
1573{ 2539{
1574 userdata = data; 2540 userdata = data;
1575} 2541}
1576 2542
1577void * 2543void *
1578ev_userdata (EV_P) 2544ev_userdata (EV_P) EV_THROW
1579{ 2545{
1580 return userdata; 2546 return userdata;
1581} 2547}
1582 2548
2549void
1583void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2550ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
1584{ 2551{
1585 invoke_cb = invoke_pending_cb; 2552 invoke_cb = invoke_pending_cb;
1586} 2553}
1587 2554
2555void
1588void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2556ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
1589{ 2557{
1590 release_cb = release; 2558 release_cb = release;
1591 acquire_cb = acquire; 2559 acquire_cb = acquire;
1592} 2560}
1593#endif 2561#endif
1594 2562
1595/* initialise a loop structure, must be zero-initialised */ 2563/* initialise a loop structure, must be zero-initialised */
1596static void noinline 2564static void noinline ecb_cold
1597loop_init (EV_P_ unsigned int flags) 2565loop_init (EV_P_ unsigned int flags) EV_THROW
1598{ 2566{
1599 if (!backend) 2567 if (!backend)
1600 { 2568 {
2569 origflags = flags;
2570
1601#if EV_USE_REALTIME 2571#if EV_USE_REALTIME
1602 if (!have_realtime) 2572 if (!have_realtime)
1603 { 2573 {
1604 struct timespec ts; 2574 struct timespec ts;
1605 2575
… …
1627 if (!(flags & EVFLAG_NOENV) 2597 if (!(flags & EVFLAG_NOENV)
1628 && !enable_secure () 2598 && !enable_secure ()
1629 && getenv ("LIBEV_FLAGS")) 2599 && getenv ("LIBEV_FLAGS"))
1630 flags = atoi (getenv ("LIBEV_FLAGS")); 2600 flags = atoi (getenv ("LIBEV_FLAGS"));
1631 2601
1632 ev_rt_now = ev_time (); 2602 ev_rt_now = ev_time ();
1633 mn_now = get_clock (); 2603 mn_now = get_clock ();
1634 now_floor = mn_now; 2604 now_floor = mn_now;
1635 rtmn_diff = ev_rt_now - mn_now; 2605 rtmn_diff = ev_rt_now - mn_now;
1636#if EV_FEATURE_API 2606#if EV_FEATURE_API
1637 invoke_cb = ev_invoke_pending; 2607 invoke_cb = ev_invoke_pending;
1638#endif 2608#endif
1639 2609
1640 io_blocktime = 0.; 2610 io_blocktime = 0.;
1641 timeout_blocktime = 0.; 2611 timeout_blocktime = 0.;
1642 backend = 0; 2612 backend = 0;
1643 backend_fd = -1; 2613 backend_fd = -1;
1644 sig_pending = 0; 2614 sig_pending = 0;
1645#if EV_ASYNC_ENABLE 2615#if EV_ASYNC_ENABLE
1646 async_pending = 0; 2616 async_pending = 0;
1647#endif 2617#endif
2618 pipe_write_skipped = 0;
2619 pipe_write_wanted = 0;
2620 evpipe [0] = -1;
2621 evpipe [1] = -1;
1648#if EV_USE_INOTIFY 2622#if EV_USE_INOTIFY
1649 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2623 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1650#endif 2624#endif
1651#if EV_USE_SIGNALFD 2625#if EV_USE_SIGNALFD
1652 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2626 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1653#endif 2627#endif
1654 2628
1655 if (!(flags & 0x0000ffffU)) 2629 if (!(flags & EVBACKEND_MASK))
1656 flags |= ev_recommended_backends (); 2630 flags |= ev_recommended_backends ();
1657 2631
2632#if EV_USE_IOCP
2633 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2634#endif
1658#if EV_USE_PORT 2635#if EV_USE_PORT
1659 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2636 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1660#endif 2637#endif
1661#if EV_USE_KQUEUE 2638#if EV_USE_KQUEUE
1662 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2639 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1679#endif 2656#endif
1680 } 2657 }
1681} 2658}
1682 2659
1683/* free up a loop structure */ 2660/* free up a loop structure */
1684static void noinline 2661void ecb_cold
1685loop_destroy (EV_P) 2662ev_loop_destroy (EV_P)
1686{ 2663{
1687 int i; 2664 int i;
2665
2666#if EV_MULTIPLICITY
2667 /* mimic free (0) */
2668 if (!EV_A)
2669 return;
2670#endif
2671
2672#if EV_CLEANUP_ENABLE
2673 /* queue cleanup watchers (and execute them) */
2674 if (expect_false (cleanupcnt))
2675 {
2676 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2677 EV_INVOKE_PENDING;
2678 }
2679#endif
2680
2681#if EV_CHILD_ENABLE
2682 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2683 {
2684 ev_ref (EV_A); /* child watcher */
2685 ev_signal_stop (EV_A_ &childev);
2686 }
2687#endif
1688 2688
1689 if (ev_is_active (&pipe_w)) 2689 if (ev_is_active (&pipe_w))
1690 { 2690 {
1691 /*ev_ref (EV_A);*/ 2691 /*ev_ref (EV_A);*/
1692 /*ev_io_stop (EV_A_ &pipe_w);*/ 2692 /*ev_io_stop (EV_A_ &pipe_w);*/
1693 2693
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]); 2694 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1702 EV_WIN32_CLOSE_FD (evpipe [1]); 2695 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1703 }
1704 } 2696 }
1705 2697
1706#if EV_USE_SIGNALFD 2698#if EV_USE_SIGNALFD
1707 if (ev_is_active (&sigfd_w)) 2699 if (ev_is_active (&sigfd_w))
1708 close (sigfd); 2700 close (sigfd);
… …
1714#endif 2706#endif
1715 2707
1716 if (backend_fd >= 0) 2708 if (backend_fd >= 0)
1717 close (backend_fd); 2709 close (backend_fd);
1718 2710
2711#if EV_USE_IOCP
2712 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2713#endif
1719#if EV_USE_PORT 2714#if EV_USE_PORT
1720 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2715 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1721#endif 2716#endif
1722#if EV_USE_KQUEUE 2717#if EV_USE_KQUEUE
1723 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2718 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1750 array_free (periodic, EMPTY); 2745 array_free (periodic, EMPTY);
1751#endif 2746#endif
1752#if EV_FORK_ENABLE 2747#if EV_FORK_ENABLE
1753 array_free (fork, EMPTY); 2748 array_free (fork, EMPTY);
1754#endif 2749#endif
2750#if EV_CLEANUP_ENABLE
2751 array_free (cleanup, EMPTY);
2752#endif
1755 array_free (prepare, EMPTY); 2753 array_free (prepare, EMPTY);
1756 array_free (check, EMPTY); 2754 array_free (check, EMPTY);
1757#if EV_ASYNC_ENABLE 2755#if EV_ASYNC_ENABLE
1758 array_free (async, EMPTY); 2756 array_free (async, EMPTY);
1759#endif 2757#endif
1760 2758
1761 backend = 0; 2759 backend = 0;
2760
2761#if EV_MULTIPLICITY
2762 if (ev_is_default_loop (EV_A))
2763#endif
2764 ev_default_loop_ptr = 0;
2765#if EV_MULTIPLICITY
2766 else
2767 ev_free (EV_A);
2768#endif
1762} 2769}
1763 2770
1764#if EV_USE_INOTIFY 2771#if EV_USE_INOTIFY
1765inline_size void infy_fork (EV_P); 2772inline_size void infy_fork (EV_P);
1766#endif 2773#endif
… …
1779#endif 2786#endif
1780#if EV_USE_INOTIFY 2787#if EV_USE_INOTIFY
1781 infy_fork (EV_A); 2788 infy_fork (EV_A);
1782#endif 2789#endif
1783 2790
2791#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1784 if (ev_is_active (&pipe_w)) 2792 if (ev_is_active (&pipe_w))
1785 { 2793 {
1786 /* this "locks" the handlers against writing to the pipe */ 2794 /* 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 2795
1793 ev_ref (EV_A); 2796 ev_ref (EV_A);
1794 ev_io_stop (EV_A_ &pipe_w); 2797 ev_io_stop (EV_A_ &pipe_w);
1795 2798
1796#if EV_USE_EVENTFD
1797 if (evfd >= 0)
1798 close (evfd);
1799#endif
1800
1801 if (evpipe [0] >= 0) 2799 if (evpipe [0] >= 0)
1802 {
1803 EV_WIN32_CLOSE_FD (evpipe [0]); 2800 EV_WIN32_CLOSE_FD (evpipe [0]);
1804 EV_WIN32_CLOSE_FD (evpipe [1]);
1805 }
1806 2801
1807#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1808 evpipe_init (EV_A); 2802 evpipe_init (EV_A);
1809 /* now iterate over everything, in case we missed something */ 2803 /* iterate over everything, in case we missed something before */
1810 pipecb (EV_A_ &pipe_w, EV_READ); 2804 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1811#endif
1812 } 2805 }
2806#endif
1813 2807
1814 postfork = 0; 2808 postfork = 0;
1815} 2809}
1816 2810
1817#if EV_MULTIPLICITY 2811#if EV_MULTIPLICITY
1818 2812
1819struct ev_loop * 2813struct ev_loop * ecb_cold
1820ev_loop_new (unsigned int flags) 2814ev_loop_new (unsigned int flags) EV_THROW
1821{ 2815{
1822 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2816 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1823 2817
1824 memset (EV_A, 0, sizeof (struct ev_loop)); 2818 memset (EV_A, 0, sizeof (struct ev_loop));
1825 loop_init (EV_A_ flags); 2819 loop_init (EV_A_ flags);
1826 2820
1827 if (ev_backend (EV_A)) 2821 if (ev_backend (EV_A))
1828 return EV_A; 2822 return EV_A;
1829 2823
2824 ev_free (EV_A);
1830 return 0; 2825 return 0;
1831} 2826}
1832 2827
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 */ 2828#endif /* multiplicity */
1846 2829
1847#if EV_VERIFY 2830#if EV_VERIFY
1848static void noinline 2831static void noinline ecb_cold
1849verify_watcher (EV_P_ W w) 2832verify_watcher (EV_P_ W w)
1850{ 2833{
1851 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2834 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1852 2835
1853 if (w->pending) 2836 if (w->pending)
1854 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2837 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1855} 2838}
1856 2839
1857static void noinline 2840static void noinline ecb_cold
1858verify_heap (EV_P_ ANHE *heap, int N) 2841verify_heap (EV_P_ ANHE *heap, int N)
1859{ 2842{
1860 int i; 2843 int i;
1861 2844
1862 for (i = HEAP0; i < N + HEAP0; ++i) 2845 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1867 2850
1868 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2851 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1869 } 2852 }
1870} 2853}
1871 2854
1872static void noinline 2855static void noinline ecb_cold
1873array_verify (EV_P_ W *ws, int cnt) 2856array_verify (EV_P_ W *ws, int cnt)
1874{ 2857{
1875 while (cnt--) 2858 while (cnt--)
1876 { 2859 {
1877 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2860 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
1879 } 2862 }
1880} 2863}
1881#endif 2864#endif
1882 2865
1883#if EV_FEATURE_API 2866#if EV_FEATURE_API
1884void 2867void ecb_cold
1885ev_verify (EV_P) 2868ev_verify (EV_P) EV_THROW
1886{ 2869{
1887#if EV_VERIFY 2870#if EV_VERIFY
1888 int i; 2871 int i;
1889 WL w; 2872 WL w, w2;
1890 2873
1891 assert (activecnt >= -1); 2874 assert (activecnt >= -1);
1892 2875
1893 assert (fdchangemax >= fdchangecnt); 2876 assert (fdchangemax >= fdchangecnt);
1894 for (i = 0; i < fdchangecnt; ++i) 2877 for (i = 0; i < fdchangecnt; ++i)
1895 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2878 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1896 2879
1897 assert (anfdmax >= 0); 2880 assert (anfdmax >= 0);
1898 for (i = 0; i < anfdmax; ++i) 2881 for (i = 0; i < anfdmax; ++i)
2882 {
2883 int j = 0;
2884
1899 for (w = anfds [i].head; w; w = w->next) 2885 for (w = w2 = anfds [i].head; w; w = w->next)
1900 { 2886 {
1901 verify_watcher (EV_A_ (W)w); 2887 verify_watcher (EV_A_ (W)w);
2888
2889 if (j++ & 1)
2890 {
2891 assert (("libev: io watcher list contains a loop", w != w2));
2892 w2 = w2->next;
2893 }
2894
1902 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2895 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)); 2896 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1904 } 2897 }
2898 }
1905 2899
1906 assert (timermax >= timercnt); 2900 assert (timermax >= timercnt);
1907 verify_heap (EV_A_ timers, timercnt); 2901 verify_heap (EV_A_ timers, timercnt);
1908 2902
1909#if EV_PERIODIC_ENABLE 2903#if EV_PERIODIC_ENABLE
… …
1924#if EV_FORK_ENABLE 2918#if EV_FORK_ENABLE
1925 assert (forkmax >= forkcnt); 2919 assert (forkmax >= forkcnt);
1926 array_verify (EV_A_ (W *)forks, forkcnt); 2920 array_verify (EV_A_ (W *)forks, forkcnt);
1927#endif 2921#endif
1928 2922
2923#if EV_CLEANUP_ENABLE
2924 assert (cleanupmax >= cleanupcnt);
2925 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2926#endif
2927
1929#if EV_ASYNC_ENABLE 2928#if EV_ASYNC_ENABLE
1930 assert (asyncmax >= asynccnt); 2929 assert (asyncmax >= asynccnt);
1931 array_verify (EV_A_ (W *)asyncs, asynccnt); 2930 array_verify (EV_A_ (W *)asyncs, asynccnt);
1932#endif 2931#endif
1933 2932
… …
1950#endif 2949#endif
1951} 2950}
1952#endif 2951#endif
1953 2952
1954#if EV_MULTIPLICITY 2953#if EV_MULTIPLICITY
1955struct ev_loop * 2954struct ev_loop * ecb_cold
1956ev_default_loop_init (unsigned int flags)
1957#else 2955#else
1958int 2956int
2957#endif
1959ev_default_loop (unsigned int flags) 2958ev_default_loop (unsigned int flags) EV_THROW
1960#endif
1961{ 2959{
1962 if (!ev_default_loop_ptr) 2960 if (!ev_default_loop_ptr)
1963 { 2961 {
1964#if EV_MULTIPLICITY 2962#if EV_MULTIPLICITY
1965 EV_P = ev_default_loop_ptr = &default_loop_struct; 2963 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1984 2982
1985 return ev_default_loop_ptr; 2983 return ev_default_loop_ptr;
1986} 2984}
1987 2985
1988void 2986void
1989ev_default_destroy (void) 2987ev_loop_fork (EV_P) EV_THROW
1990{ 2988{
1991#if EV_MULTIPLICITY 2989 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} 2990}
2014 2991
2015/*****************************************************************************/ 2992/*****************************************************************************/
2016 2993
2017void 2994void
… …
2019{ 2996{
2020 EV_CB_INVOKE ((W)w, revents); 2997 EV_CB_INVOKE ((W)w, revents);
2021} 2998}
2022 2999
2023unsigned int 3000unsigned int
2024ev_pending_count (EV_P) 3001ev_pending_count (EV_P) EV_THROW
2025{ 3002{
2026 int pri; 3003 int pri;
2027 unsigned int count = 0; 3004 unsigned int count = 0;
2028 3005
2029 for (pri = NUMPRI; pri--; ) 3006 for (pri = NUMPRI; pri--; )
… …
2033} 3010}
2034 3011
2035void noinline 3012void noinline
2036ev_invoke_pending (EV_P) 3013ev_invoke_pending (EV_P)
2037{ 3014{
2038 int pri; 3015 pendingpri = NUMPRI;
2039 3016
2040 for (pri = NUMPRI; pri--; ) 3017 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
3018 {
3019 --pendingpri;
3020
2041 while (pendingcnt [pri]) 3021 while (pendingcnt [pendingpri])
2042 { 3022 {
2043 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3023 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2044 3024
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; 3025 p->w->pending = 0;
2049 EV_CB_INVOKE (p->w, p->events); 3026 EV_CB_INVOKE (p->w, p->events);
2050 EV_FREQUENT_CHECK; 3027 EV_FREQUENT_CHECK;
2051 } 3028 }
3029 }
2052} 3030}
2053 3031
2054#if EV_IDLE_ENABLE 3032#if EV_IDLE_ENABLE
2055/* make idle watchers pending. this handles the "call-idle */ 3033/* make idle watchers pending. this handles the "call-idle */
2056/* only when higher priorities are idle" logic */ 3034/* only when higher priorities are idle" logic */
… …
2113 feed_reverse_done (EV_A_ EV_TIMER); 3091 feed_reverse_done (EV_A_ EV_TIMER);
2114 } 3092 }
2115} 3093}
2116 3094
2117#if EV_PERIODIC_ENABLE 3095#if EV_PERIODIC_ENABLE
3096
3097static void noinline
3098periodic_recalc (EV_P_ ev_periodic *w)
3099{
3100 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3101 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3102
3103 /* the above almost always errs on the low side */
3104 while (at <= ev_rt_now)
3105 {
3106 ev_tstamp nat = at + w->interval;
3107
3108 /* when resolution fails us, we use ev_rt_now */
3109 if (expect_false (nat == at))
3110 {
3111 at = ev_rt_now;
3112 break;
3113 }
3114
3115 at = nat;
3116 }
3117
3118 ev_at (w) = at;
3119}
3120
2118/* make periodics pending */ 3121/* make periodics pending */
2119inline_size void 3122inline_size void
2120periodics_reify (EV_P) 3123periodics_reify (EV_P)
2121{ 3124{
2122 EV_FREQUENT_CHECK; 3125 EV_FREQUENT_CHECK;
2123 3126
2124 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3127 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2125 { 3128 {
2126 int feed_count = 0;
2127
2128 do 3129 do
2129 { 3130 {
2130 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3131 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2131 3132
2132 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3133 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2141 ANHE_at_cache (periodics [HEAP0]); 3142 ANHE_at_cache (periodics [HEAP0]);
2142 downheap (periodics, periodiccnt, HEAP0); 3143 downheap (periodics, periodiccnt, HEAP0);
2143 } 3144 }
2144 else if (w->interval) 3145 else if (w->interval)
2145 { 3146 {
2146 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3147 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]); 3148 ANHE_at_cache (periodics [HEAP0]);
2161 downheap (periodics, periodiccnt, HEAP0); 3149 downheap (periodics, periodiccnt, HEAP0);
2162 } 3150 }
2163 else 3151 else
2164 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3152 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2171 feed_reverse_done (EV_A_ EV_PERIODIC); 3159 feed_reverse_done (EV_A_ EV_PERIODIC);
2172 } 3160 }
2173} 3161}
2174 3162
2175/* simply recalculate all periodics */ 3163/* simply recalculate all periodics */
2176/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 3164/* TODO: maybe ensure that at least one event happens when jumping forward? */
2177static void noinline 3165static void noinline ecb_cold
2178periodics_reschedule (EV_P) 3166periodics_reschedule (EV_P)
2179{ 3167{
2180 int i; 3168 int i;
2181 3169
2182 /* adjust periodics after time jump */ 3170 /* adjust periodics after time jump */
… …
2185 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3173 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2186 3174
2187 if (w->reschedule_cb) 3175 if (w->reschedule_cb)
2188 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3176 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2189 else if (w->interval) 3177 else if (w->interval)
2190 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3178 periodic_recalc (EV_A_ w);
2191 3179
2192 ANHE_at_cache (periodics [i]); 3180 ANHE_at_cache (periodics [i]);
2193 } 3181 }
2194 3182
2195 reheap (periodics, periodiccnt); 3183 reheap (periodics, periodiccnt);
2196} 3184}
2197#endif 3185#endif
2198 3186
2199/* adjust all timers by a given offset */ 3187/* adjust all timers by a given offset */
2200static void noinline 3188static void noinline ecb_cold
2201timers_reschedule (EV_P_ ev_tstamp adjust) 3189timers_reschedule (EV_P_ ev_tstamp adjust)
2202{ 3190{
2203 int i; 3191 int i;
2204 3192
2205 for (i = 0; i < timercnt; ++i) 3193 for (i = 0; i < timercnt; ++i)
… …
2242 * doesn't hurt either as we only do this on time-jumps or 3230 * doesn't hurt either as we only do this on time-jumps or
2243 * in the unlikely event of having been preempted here. 3231 * in the unlikely event of having been preempted here.
2244 */ 3232 */
2245 for (i = 4; --i; ) 3233 for (i = 4; --i; )
2246 { 3234 {
3235 ev_tstamp diff;
2247 rtmn_diff = ev_rt_now - mn_now; 3236 rtmn_diff = ev_rt_now - mn_now;
2248 3237
3238 diff = odiff - rtmn_diff;
3239
2249 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3240 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2250 return; /* all is well */ 3241 return; /* all is well */
2251 3242
2252 ev_rt_now = ev_time (); 3243 ev_rt_now = ev_time ();
2253 mn_now = get_clock (); 3244 mn_now = get_clock ();
2254 now_floor = mn_now; 3245 now_floor = mn_now;
… …
2276 3267
2277 mn_now = ev_rt_now; 3268 mn_now = ev_rt_now;
2278 } 3269 }
2279} 3270}
2280 3271
2281void 3272int
2282ev_loop (EV_P_ int flags) 3273ev_run (EV_P_ int flags)
2283{ 3274{
2284#if EV_FEATURE_API 3275#if EV_FEATURE_API
2285 ++loop_depth; 3276 ++loop_depth;
2286#endif 3277#endif
2287 3278
2288 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 3279 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2289 3280
2290 loop_done = EVUNLOOP_CANCEL; 3281 loop_done = EVBREAK_CANCEL;
2291 3282
2292 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3283 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2293 3284
2294 do 3285 do
2295 { 3286 {
… …
2338 /* calculate blocking time */ 3329 /* calculate blocking time */
2339 { 3330 {
2340 ev_tstamp waittime = 0.; 3331 ev_tstamp waittime = 0.;
2341 ev_tstamp sleeptime = 0.; 3332 ev_tstamp sleeptime = 0.;
2342 3333
3334 /* remember old timestamp for io_blocktime calculation */
3335 ev_tstamp prev_mn_now = mn_now;
3336
3337 /* update time to cancel out callback processing overhead */
3338 time_update (EV_A_ 1e100);
3339
3340 /* from now on, we want a pipe-wake-up */
3341 pipe_write_wanted = 1;
3342
3343 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3344
2343 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3345 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2344 { 3346 {
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; 3347 waittime = MAX_BLOCKTIME;
2352 3348
2353 if (timercnt) 3349 if (timercnt)
2354 { 3350 {
2355 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3351 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2356 if (waittime > to) waittime = to; 3352 if (waittime > to) waittime = to;
2357 } 3353 }
2358 3354
2359#if EV_PERIODIC_ENABLE 3355#if EV_PERIODIC_ENABLE
2360 if (periodiccnt) 3356 if (periodiccnt)
2361 { 3357 {
2362 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3358 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2363 if (waittime > to) waittime = to; 3359 if (waittime > to) waittime = to;
2364 } 3360 }
2365#endif 3361#endif
2366 3362
2367 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3363 /* don't let timeouts decrease the waittime below timeout_blocktime */
2368 if (expect_false (waittime < timeout_blocktime)) 3364 if (expect_false (waittime < timeout_blocktime))
2369 waittime = timeout_blocktime; 3365 waittime = timeout_blocktime;
3366
3367 /* at this point, we NEED to wait, so we have to ensure */
3368 /* to pass a minimum nonzero value to the backend */
3369 if (expect_false (waittime < backend_mintime))
3370 waittime = backend_mintime;
2370 3371
2371 /* extra check because io_blocktime is commonly 0 */ 3372 /* extra check because io_blocktime is commonly 0 */
2372 if (expect_false (io_blocktime)) 3373 if (expect_false (io_blocktime))
2373 { 3374 {
2374 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3375 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2375 3376
2376 if (sleeptime > waittime - backend_fudge) 3377 if (sleeptime > waittime - backend_mintime)
2377 sleeptime = waittime - backend_fudge; 3378 sleeptime = waittime - backend_mintime;
2378 3379
2379 if (expect_true (sleeptime > 0.)) 3380 if (expect_true (sleeptime > 0.))
2380 { 3381 {
2381 ev_sleep (sleeptime); 3382 ev_sleep (sleeptime);
2382 waittime -= sleeptime; 3383 waittime -= sleeptime;
… …
2385 } 3386 }
2386 3387
2387#if EV_FEATURE_API 3388#if EV_FEATURE_API
2388 ++loop_count; 3389 ++loop_count;
2389#endif 3390#endif
2390 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3391 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2391 backend_poll (EV_A_ waittime); 3392 backend_poll (EV_A_ waittime);
2392 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3393 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3394
3395 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3396
3397 ECB_MEMORY_FENCE_ACQUIRE;
3398 if (pipe_write_skipped)
3399 {
3400 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3401 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3402 }
3403
2393 3404
2394 /* update ev_rt_now, do magic */ 3405 /* update ev_rt_now, do magic */
2395 time_update (EV_A_ waittime + sleeptime); 3406 time_update (EV_A_ waittime + sleeptime);
2396 } 3407 }
2397 3408
… …
2415 EV_INVOKE_PENDING; 3426 EV_INVOKE_PENDING;
2416 } 3427 }
2417 while (expect_true ( 3428 while (expect_true (
2418 activecnt 3429 activecnt
2419 && !loop_done 3430 && !loop_done
2420 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3431 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2421 )); 3432 ));
2422 3433
2423 if (loop_done == EVUNLOOP_ONE) 3434 if (loop_done == EVBREAK_ONE)
2424 loop_done = EVUNLOOP_CANCEL; 3435 loop_done = EVBREAK_CANCEL;
2425 3436
2426#if EV_FEATURE_API 3437#if EV_FEATURE_API
2427 --loop_depth; 3438 --loop_depth;
2428#endif 3439#endif
3440
3441 return activecnt;
2429} 3442}
2430 3443
2431void 3444void
2432ev_unloop (EV_P_ int how) 3445ev_break (EV_P_ int how) EV_THROW
2433{ 3446{
2434 loop_done = how; 3447 loop_done = how;
2435} 3448}
2436 3449
2437void 3450void
2438ev_ref (EV_P) 3451ev_ref (EV_P) EV_THROW
2439{ 3452{
2440 ++activecnt; 3453 ++activecnt;
2441} 3454}
2442 3455
2443void 3456void
2444ev_unref (EV_P) 3457ev_unref (EV_P) EV_THROW
2445{ 3458{
2446 --activecnt; 3459 --activecnt;
2447} 3460}
2448 3461
2449void 3462void
2450ev_now_update (EV_P) 3463ev_now_update (EV_P) EV_THROW
2451{ 3464{
2452 time_update (EV_A_ 1e100); 3465 time_update (EV_A_ 1e100);
2453} 3466}
2454 3467
2455void 3468void
2456ev_suspend (EV_P) 3469ev_suspend (EV_P) EV_THROW
2457{ 3470{
2458 ev_now_update (EV_A); 3471 ev_now_update (EV_A);
2459} 3472}
2460 3473
2461void 3474void
2462ev_resume (EV_P) 3475ev_resume (EV_P) EV_THROW
2463{ 3476{
2464 ev_tstamp mn_prev = mn_now; 3477 ev_tstamp mn_prev = mn_now;
2465 3478
2466 ev_now_update (EV_A); 3479 ev_now_update (EV_A);
2467 timers_reschedule (EV_A_ mn_now - mn_prev); 3480 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2506 w->pending = 0; 3519 w->pending = 0;
2507 } 3520 }
2508} 3521}
2509 3522
2510int 3523int
2511ev_clear_pending (EV_P_ void *w) 3524ev_clear_pending (EV_P_ void *w) EV_THROW
2512{ 3525{
2513 W w_ = (W)w; 3526 W w_ = (W)w;
2514 int pending = w_->pending; 3527 int pending = w_->pending;
2515 3528
2516 if (expect_true (pending)) 3529 if (expect_true (pending))
… …
2549} 3562}
2550 3563
2551/*****************************************************************************/ 3564/*****************************************************************************/
2552 3565
2553void noinline 3566void noinline
2554ev_io_start (EV_P_ ev_io *w) 3567ev_io_start (EV_P_ ev_io *w) EV_THROW
2555{ 3568{
2556 int fd = w->fd; 3569 int fd = w->fd;
2557 3570
2558 if (expect_false (ev_is_active (w))) 3571 if (expect_false (ev_is_active (w)))
2559 return; 3572 return;
… …
2565 3578
2566 ev_start (EV_A_ (W)w, 1); 3579 ev_start (EV_A_ (W)w, 1);
2567 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3580 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2568 wlist_add (&anfds[fd].head, (WL)w); 3581 wlist_add (&anfds[fd].head, (WL)w);
2569 3582
3583 /* common bug, apparently */
3584 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3585
2570 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3586 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2571 w->events &= ~EV__IOFDSET; 3587 w->events &= ~EV__IOFDSET;
2572 3588
2573 EV_FREQUENT_CHECK; 3589 EV_FREQUENT_CHECK;
2574} 3590}
2575 3591
2576void noinline 3592void noinline
2577ev_io_stop (EV_P_ ev_io *w) 3593ev_io_stop (EV_P_ ev_io *w) EV_THROW
2578{ 3594{
2579 clear_pending (EV_A_ (W)w); 3595 clear_pending (EV_A_ (W)w);
2580 if (expect_false (!ev_is_active (w))) 3596 if (expect_false (!ev_is_active (w)))
2581 return; 3597 return;
2582 3598
… …
2585 EV_FREQUENT_CHECK; 3601 EV_FREQUENT_CHECK;
2586 3602
2587 wlist_del (&anfds[w->fd].head, (WL)w); 3603 wlist_del (&anfds[w->fd].head, (WL)w);
2588 ev_stop (EV_A_ (W)w); 3604 ev_stop (EV_A_ (W)w);
2589 3605
2590 fd_change (EV_A_ w->fd, 1); 3606 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2591 3607
2592 EV_FREQUENT_CHECK; 3608 EV_FREQUENT_CHECK;
2593} 3609}
2594 3610
2595void noinline 3611void noinline
2596ev_timer_start (EV_P_ ev_timer *w) 3612ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2597{ 3613{
2598 if (expect_false (ev_is_active (w))) 3614 if (expect_false (ev_is_active (w)))
2599 return; 3615 return;
2600 3616
2601 ev_at (w) += mn_now; 3617 ev_at (w) += mn_now;
… …
2615 3631
2616 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3632 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2617} 3633}
2618 3634
2619void noinline 3635void noinline
2620ev_timer_stop (EV_P_ ev_timer *w) 3636ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2621{ 3637{
2622 clear_pending (EV_A_ (W)w); 3638 clear_pending (EV_A_ (W)w);
2623 if (expect_false (!ev_is_active (w))) 3639 if (expect_false (!ev_is_active (w)))
2624 return; 3640 return;
2625 3641
… …
2645 3661
2646 EV_FREQUENT_CHECK; 3662 EV_FREQUENT_CHECK;
2647} 3663}
2648 3664
2649void noinline 3665void noinline
2650ev_timer_again (EV_P_ ev_timer *w) 3666ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2651{ 3667{
2652 EV_FREQUENT_CHECK; 3668 EV_FREQUENT_CHECK;
3669
3670 clear_pending (EV_A_ (W)w);
2653 3671
2654 if (ev_is_active (w)) 3672 if (ev_is_active (w))
2655 { 3673 {
2656 if (w->repeat) 3674 if (w->repeat)
2657 { 3675 {
… …
2670 3688
2671 EV_FREQUENT_CHECK; 3689 EV_FREQUENT_CHECK;
2672} 3690}
2673 3691
2674ev_tstamp 3692ev_tstamp
2675ev_timer_remaining (EV_P_ ev_timer *w) 3693ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2676{ 3694{
2677 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3695 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2678} 3696}
2679 3697
2680#if EV_PERIODIC_ENABLE 3698#if EV_PERIODIC_ENABLE
2681void noinline 3699void noinline
2682ev_periodic_start (EV_P_ ev_periodic *w) 3700ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2683{ 3701{
2684 if (expect_false (ev_is_active (w))) 3702 if (expect_false (ev_is_active (w)))
2685 return; 3703 return;
2686 3704
2687 if (w->reschedule_cb) 3705 if (w->reschedule_cb)
2688 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3706 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2689 else if (w->interval) 3707 else if (w->interval)
2690 { 3708 {
2691 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3709 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 */ 3710 periodic_recalc (EV_A_ w);
2693 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2694 } 3711 }
2695 else 3712 else
2696 ev_at (w) = w->offset; 3713 ev_at (w) = w->offset;
2697 3714
2698 EV_FREQUENT_CHECK; 3715 EV_FREQUENT_CHECK;
… …
2708 3725
2709 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3726 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2710} 3727}
2711 3728
2712void noinline 3729void noinline
2713ev_periodic_stop (EV_P_ ev_periodic *w) 3730ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2714{ 3731{
2715 clear_pending (EV_A_ (W)w); 3732 clear_pending (EV_A_ (W)w);
2716 if (expect_false (!ev_is_active (w))) 3733 if (expect_false (!ev_is_active (w)))
2717 return; 3734 return;
2718 3735
… …
2736 3753
2737 EV_FREQUENT_CHECK; 3754 EV_FREQUENT_CHECK;
2738} 3755}
2739 3756
2740void noinline 3757void noinline
2741ev_periodic_again (EV_P_ ev_periodic *w) 3758ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2742{ 3759{
2743 /* TODO: use adjustheap and recalculation */ 3760 /* TODO: use adjustheap and recalculation */
2744 ev_periodic_stop (EV_A_ w); 3761 ev_periodic_stop (EV_A_ w);
2745 ev_periodic_start (EV_A_ w); 3762 ev_periodic_start (EV_A_ w);
2746} 3763}
… …
2751#endif 3768#endif
2752 3769
2753#if EV_SIGNAL_ENABLE 3770#if EV_SIGNAL_ENABLE
2754 3771
2755void noinline 3772void noinline
2756ev_signal_start (EV_P_ ev_signal *w) 3773ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2757{ 3774{
2758 if (expect_false (ev_is_active (w))) 3775 if (expect_false (ev_is_active (w)))
2759 return; 3776 return;
2760 3777
2761 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3778 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
2763#if EV_MULTIPLICITY 3780#if EV_MULTIPLICITY
2764 assert (("libev: a signal must not be attached to two different loops", 3781 assert (("libev: a signal must not be attached to two different loops",
2765 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 3782 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2766 3783
2767 signals [w->signum - 1].loop = EV_A; 3784 signals [w->signum - 1].loop = EV_A;
3785 ECB_MEMORY_FENCE_RELEASE;
2768#endif 3786#endif
2769 3787
2770 EV_FREQUENT_CHECK; 3788 EV_FREQUENT_CHECK;
2771 3789
2772#if EV_USE_SIGNALFD 3790#if EV_USE_SIGNALFD
… …
2819 sa.sa_handler = ev_sighandler; 3837 sa.sa_handler = ev_sighandler;
2820 sigfillset (&sa.sa_mask); 3838 sigfillset (&sa.sa_mask);
2821 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3839 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2822 sigaction (w->signum, &sa, 0); 3840 sigaction (w->signum, &sa, 0);
2823 3841
3842 if (origflags & EVFLAG_NOSIGMASK)
3843 {
2824 sigemptyset (&sa.sa_mask); 3844 sigemptyset (&sa.sa_mask);
2825 sigaddset (&sa.sa_mask, w->signum); 3845 sigaddset (&sa.sa_mask, w->signum);
2826 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3846 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3847 }
2827#endif 3848#endif
2828 } 3849 }
2829 3850
2830 EV_FREQUENT_CHECK; 3851 EV_FREQUENT_CHECK;
2831} 3852}
2832 3853
2833void noinline 3854void noinline
2834ev_signal_stop (EV_P_ ev_signal *w) 3855ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2835{ 3856{
2836 clear_pending (EV_A_ (W)w); 3857 clear_pending (EV_A_ (W)w);
2837 if (expect_false (!ev_is_active (w))) 3858 if (expect_false (!ev_is_active (w)))
2838 return; 3859 return;
2839 3860
… …
2870#endif 3891#endif
2871 3892
2872#if EV_CHILD_ENABLE 3893#if EV_CHILD_ENABLE
2873 3894
2874void 3895void
2875ev_child_start (EV_P_ ev_child *w) 3896ev_child_start (EV_P_ ev_child *w) EV_THROW
2876{ 3897{
2877#if EV_MULTIPLICITY 3898#if EV_MULTIPLICITY
2878 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3899 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2879#endif 3900#endif
2880 if (expect_false (ev_is_active (w))) 3901 if (expect_false (ev_is_active (w)))
… …
2887 3908
2888 EV_FREQUENT_CHECK; 3909 EV_FREQUENT_CHECK;
2889} 3910}
2890 3911
2891void 3912void
2892ev_child_stop (EV_P_ ev_child *w) 3913ev_child_stop (EV_P_ ev_child *w) EV_THROW
2893{ 3914{
2894 clear_pending (EV_A_ (W)w); 3915 clear_pending (EV_A_ (W)w);
2895 if (expect_false (!ev_is_active (w))) 3916 if (expect_false (!ev_is_active (w)))
2896 return; 3917 return;
2897 3918
… …
2924# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 3945# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2925 3946
2926static void noinline 3947static void noinline
2927infy_add (EV_P_ ev_stat *w) 3948infy_add (EV_P_ ev_stat *w)
2928{ 3949{
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); 3950 w->wd = inotify_add_watch (fs_fd, w->path,
3951 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
3952 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
3953 | IN_DONT_FOLLOW | IN_MASK_ADD);
2930 3954
2931 if (w->wd >= 0) 3955 if (w->wd >= 0)
2932 { 3956 {
2933 struct statfs sfs; 3957 struct statfs sfs;
2934 3958
… …
2938 3962
2939 if (!fs_2625) 3963 if (!fs_2625)
2940 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3964 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2941 else if (!statfs (w->path, &sfs) 3965 else if (!statfs (w->path, &sfs)
2942 && (sfs.f_type == 0x1373 /* devfs */ 3966 && (sfs.f_type == 0x1373 /* devfs */
3967 || sfs.f_type == 0x4006 /* fat */
3968 || sfs.f_type == 0x4d44 /* msdos */
2943 || sfs.f_type == 0xEF53 /* ext2/3 */ 3969 || sfs.f_type == 0xEF53 /* ext2/3 */
3970 || sfs.f_type == 0x72b6 /* jffs2 */
3971 || sfs.f_type == 0x858458f6 /* ramfs */
3972 || sfs.f_type == 0x5346544e /* ntfs */
2944 || sfs.f_type == 0x3153464a /* jfs */ 3973 || sfs.f_type == 0x3153464a /* jfs */
3974 || sfs.f_type == 0x9123683e /* btrfs */
2945 || sfs.f_type == 0x52654973 /* reiser3 */ 3975 || sfs.f_type == 0x52654973 /* reiser3 */
2946 || sfs.f_type == 0x01021994 /* tempfs */ 3976 || sfs.f_type == 0x01021994 /* tmpfs */
2947 || sfs.f_type == 0x58465342 /* xfs */)) 3977 || sfs.f_type == 0x58465342 /* xfs */))
2948 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 3978 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2949 else 3979 else
2950 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 3980 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2951 } 3981 }
… …
2972 if (!pend || pend == path) 4002 if (!pend || pend == path)
2973 break; 4003 break;
2974 4004
2975 *pend = 0; 4005 *pend = 0;
2976 w->wd = inotify_add_watch (fs_fd, path, mask); 4006 w->wd = inotify_add_watch (fs_fd, path, mask);
2977 } 4007 }
2978 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4008 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2979 } 4009 }
2980 } 4010 }
2981 4011
2982 if (w->wd >= 0) 4012 if (w->wd >= 0)
… …
3049 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4079 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3050 ofs += sizeof (struct inotify_event) + ev->len; 4080 ofs += sizeof (struct inotify_event) + ev->len;
3051 } 4081 }
3052} 4082}
3053 4083
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 4084inline_size void ecb_cold
3087ev_check_2625 (EV_P) 4085ev_check_2625 (EV_P)
3088{ 4086{
3089 /* kernels < 2.6.25 are borked 4087 /* kernels < 2.6.25 are borked
3090 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4088 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3091 */ 4089 */
… …
3096} 4094}
3097 4095
3098inline_size int 4096inline_size int
3099infy_newfd (void) 4097infy_newfd (void)
3100{ 4098{
3101#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4099#if defined IN_CLOEXEC && defined IN_NONBLOCK
3102 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4100 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3103 if (fd >= 0) 4101 if (fd >= 0)
3104 return fd; 4102 return fd;
3105#endif 4103#endif
3106 return inotify_init (); 4104 return inotify_init ();
… …
3181#else 4179#else
3182# define EV_LSTAT(p,b) lstat (p, b) 4180# define EV_LSTAT(p,b) lstat (p, b)
3183#endif 4181#endif
3184 4182
3185void 4183void
3186ev_stat_stat (EV_P_ ev_stat *w) 4184ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3187{ 4185{
3188 if (lstat (w->path, &w->attr) < 0) 4186 if (lstat (w->path, &w->attr) < 0)
3189 w->attr.st_nlink = 0; 4187 w->attr.st_nlink = 0;
3190 else if (!w->attr.st_nlink) 4188 else if (!w->attr.st_nlink)
3191 w->attr.st_nlink = 1; 4189 w->attr.st_nlink = 1;
… …
3230 ev_feed_event (EV_A_ w, EV_STAT); 4228 ev_feed_event (EV_A_ w, EV_STAT);
3231 } 4229 }
3232} 4230}
3233 4231
3234void 4232void
3235ev_stat_start (EV_P_ ev_stat *w) 4233ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3236{ 4234{
3237 if (expect_false (ev_is_active (w))) 4235 if (expect_false (ev_is_active (w)))
3238 return; 4236 return;
3239 4237
3240 ev_stat_stat (EV_A_ w); 4238 ev_stat_stat (EV_A_ w);
… …
3261 4259
3262 EV_FREQUENT_CHECK; 4260 EV_FREQUENT_CHECK;
3263} 4261}
3264 4262
3265void 4263void
3266ev_stat_stop (EV_P_ ev_stat *w) 4264ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3267{ 4265{
3268 clear_pending (EV_A_ (W)w); 4266 clear_pending (EV_A_ (W)w);
3269 if (expect_false (!ev_is_active (w))) 4267 if (expect_false (!ev_is_active (w)))
3270 return; 4268 return;
3271 4269
… …
3287} 4285}
3288#endif 4286#endif
3289 4287
3290#if EV_IDLE_ENABLE 4288#if EV_IDLE_ENABLE
3291void 4289void
3292ev_idle_start (EV_P_ ev_idle *w) 4290ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3293{ 4291{
3294 if (expect_false (ev_is_active (w))) 4292 if (expect_false (ev_is_active (w)))
3295 return; 4293 return;
3296 4294
3297 pri_adjust (EV_A_ (W)w); 4295 pri_adjust (EV_A_ (W)w);
… …
3310 4308
3311 EV_FREQUENT_CHECK; 4309 EV_FREQUENT_CHECK;
3312} 4310}
3313 4311
3314void 4312void
3315ev_idle_stop (EV_P_ ev_idle *w) 4313ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3316{ 4314{
3317 clear_pending (EV_A_ (W)w); 4315 clear_pending (EV_A_ (W)w);
3318 if (expect_false (!ev_is_active (w))) 4316 if (expect_false (!ev_is_active (w)))
3319 return; 4317 return;
3320 4318
… …
3334} 4332}
3335#endif 4333#endif
3336 4334
3337#if EV_PREPARE_ENABLE 4335#if EV_PREPARE_ENABLE
3338void 4336void
3339ev_prepare_start (EV_P_ ev_prepare *w) 4337ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3340{ 4338{
3341 if (expect_false (ev_is_active (w))) 4339 if (expect_false (ev_is_active (w)))
3342 return; 4340 return;
3343 4341
3344 EV_FREQUENT_CHECK; 4342 EV_FREQUENT_CHECK;
… …
3349 4347
3350 EV_FREQUENT_CHECK; 4348 EV_FREQUENT_CHECK;
3351} 4349}
3352 4350
3353void 4351void
3354ev_prepare_stop (EV_P_ ev_prepare *w) 4352ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3355{ 4353{
3356 clear_pending (EV_A_ (W)w); 4354 clear_pending (EV_A_ (W)w);
3357 if (expect_false (!ev_is_active (w))) 4355 if (expect_false (!ev_is_active (w)))
3358 return; 4356 return;
3359 4357
… …
3372} 4370}
3373#endif 4371#endif
3374 4372
3375#if EV_CHECK_ENABLE 4373#if EV_CHECK_ENABLE
3376void 4374void
3377ev_check_start (EV_P_ ev_check *w) 4375ev_check_start (EV_P_ ev_check *w) EV_THROW
3378{ 4376{
3379 if (expect_false (ev_is_active (w))) 4377 if (expect_false (ev_is_active (w)))
3380 return; 4378 return;
3381 4379
3382 EV_FREQUENT_CHECK; 4380 EV_FREQUENT_CHECK;
… …
3387 4385
3388 EV_FREQUENT_CHECK; 4386 EV_FREQUENT_CHECK;
3389} 4387}
3390 4388
3391void 4389void
3392ev_check_stop (EV_P_ ev_check *w) 4390ev_check_stop (EV_P_ ev_check *w) EV_THROW
3393{ 4391{
3394 clear_pending (EV_A_ (W)w); 4392 clear_pending (EV_A_ (W)w);
3395 if (expect_false (!ev_is_active (w))) 4393 if (expect_false (!ev_is_active (w)))
3396 return; 4394 return;
3397 4395
… …
3410} 4408}
3411#endif 4409#endif
3412 4410
3413#if EV_EMBED_ENABLE 4411#if EV_EMBED_ENABLE
3414void noinline 4412void noinline
3415ev_embed_sweep (EV_P_ ev_embed *w) 4413ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3416{ 4414{
3417 ev_loop (w->other, EVLOOP_NONBLOCK); 4415 ev_run (w->other, EVRUN_NOWAIT);
3418} 4416}
3419 4417
3420static void 4418static void
3421embed_io_cb (EV_P_ ev_io *io, int revents) 4419embed_io_cb (EV_P_ ev_io *io, int revents)
3422{ 4420{
3423 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4421 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3424 4422
3425 if (ev_cb (w)) 4423 if (ev_cb (w))
3426 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4424 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3427 else 4425 else
3428 ev_loop (w->other, EVLOOP_NONBLOCK); 4426 ev_run (w->other, EVRUN_NOWAIT);
3429} 4427}
3430 4428
3431static void 4429static void
3432embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4430embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3433{ 4431{
… …
3437 EV_P = w->other; 4435 EV_P = w->other;
3438 4436
3439 while (fdchangecnt) 4437 while (fdchangecnt)
3440 { 4438 {
3441 fd_reify (EV_A); 4439 fd_reify (EV_A);
3442 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4440 ev_run (EV_A_ EVRUN_NOWAIT);
3443 } 4441 }
3444 } 4442 }
3445} 4443}
3446 4444
3447static void 4445static void
… …
3453 4451
3454 { 4452 {
3455 EV_P = w->other; 4453 EV_P = w->other;
3456 4454
3457 ev_loop_fork (EV_A); 4455 ev_loop_fork (EV_A);
3458 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4456 ev_run (EV_A_ EVRUN_NOWAIT);
3459 } 4457 }
3460 4458
3461 ev_embed_start (EV_A_ w); 4459 ev_embed_start (EV_A_ w);
3462} 4460}
3463 4461
… …
3468 ev_idle_stop (EV_A_ idle); 4466 ev_idle_stop (EV_A_ idle);
3469} 4467}
3470#endif 4468#endif
3471 4469
3472void 4470void
3473ev_embed_start (EV_P_ ev_embed *w) 4471ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3474{ 4472{
3475 if (expect_false (ev_is_active (w))) 4473 if (expect_false (ev_is_active (w)))
3476 return; 4474 return;
3477 4475
3478 { 4476 {
… …
3499 4497
3500 EV_FREQUENT_CHECK; 4498 EV_FREQUENT_CHECK;
3501} 4499}
3502 4500
3503void 4501void
3504ev_embed_stop (EV_P_ ev_embed *w) 4502ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3505{ 4503{
3506 clear_pending (EV_A_ (W)w); 4504 clear_pending (EV_A_ (W)w);
3507 if (expect_false (!ev_is_active (w))) 4505 if (expect_false (!ev_is_active (w)))
3508 return; 4506 return;
3509 4507
… …
3519} 4517}
3520#endif 4518#endif
3521 4519
3522#if EV_FORK_ENABLE 4520#if EV_FORK_ENABLE
3523void 4521void
3524ev_fork_start (EV_P_ ev_fork *w) 4522ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3525{ 4523{
3526 if (expect_false (ev_is_active (w))) 4524 if (expect_false (ev_is_active (w)))
3527 return; 4525 return;
3528 4526
3529 EV_FREQUENT_CHECK; 4527 EV_FREQUENT_CHECK;
… …
3534 4532
3535 EV_FREQUENT_CHECK; 4533 EV_FREQUENT_CHECK;
3536} 4534}
3537 4535
3538void 4536void
3539ev_fork_stop (EV_P_ ev_fork *w) 4537ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3540{ 4538{
3541 clear_pending (EV_A_ (W)w); 4539 clear_pending (EV_A_ (W)w);
3542 if (expect_false (!ev_is_active (w))) 4540 if (expect_false (!ev_is_active (w)))
3543 return; 4541 return;
3544 4542
… …
3555 4553
3556 EV_FREQUENT_CHECK; 4554 EV_FREQUENT_CHECK;
3557} 4555}
3558#endif 4556#endif
3559 4557
4558#if EV_CLEANUP_ENABLE
4559void
4560ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4561{
4562 if (expect_false (ev_is_active (w)))
4563 return;
4564
4565 EV_FREQUENT_CHECK;
4566
4567 ev_start (EV_A_ (W)w, ++cleanupcnt);
4568 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4569 cleanups [cleanupcnt - 1] = w;
4570
4571 /* cleanup watchers should never keep a refcount on the loop */
4572 ev_unref (EV_A);
4573 EV_FREQUENT_CHECK;
4574}
4575
4576void
4577ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4578{
4579 clear_pending (EV_A_ (W)w);
4580 if (expect_false (!ev_is_active (w)))
4581 return;
4582
4583 EV_FREQUENT_CHECK;
4584 ev_ref (EV_A);
4585
4586 {
4587 int active = ev_active (w);
4588
4589 cleanups [active - 1] = cleanups [--cleanupcnt];
4590 ev_active (cleanups [active - 1]) = active;
4591 }
4592
4593 ev_stop (EV_A_ (W)w);
4594
4595 EV_FREQUENT_CHECK;
4596}
4597#endif
4598
3560#if EV_ASYNC_ENABLE 4599#if EV_ASYNC_ENABLE
3561void 4600void
3562ev_async_start (EV_P_ ev_async *w) 4601ev_async_start (EV_P_ ev_async *w) EV_THROW
3563{ 4602{
3564 if (expect_false (ev_is_active (w))) 4603 if (expect_false (ev_is_active (w)))
3565 return; 4604 return;
4605
4606 w->sent = 0;
3566 4607
3567 evpipe_init (EV_A); 4608 evpipe_init (EV_A);
3568 4609
3569 EV_FREQUENT_CHECK; 4610 EV_FREQUENT_CHECK;
3570 4611
… …
3574 4615
3575 EV_FREQUENT_CHECK; 4616 EV_FREQUENT_CHECK;
3576} 4617}
3577 4618
3578void 4619void
3579ev_async_stop (EV_P_ ev_async *w) 4620ev_async_stop (EV_P_ ev_async *w) EV_THROW
3580{ 4621{
3581 clear_pending (EV_A_ (W)w); 4622 clear_pending (EV_A_ (W)w);
3582 if (expect_false (!ev_is_active (w))) 4623 if (expect_false (!ev_is_active (w)))
3583 return; 4624 return;
3584 4625
… …
3595 4636
3596 EV_FREQUENT_CHECK; 4637 EV_FREQUENT_CHECK;
3597} 4638}
3598 4639
3599void 4640void
3600ev_async_send (EV_P_ ev_async *w) 4641ev_async_send (EV_P_ ev_async *w) EV_THROW
3601{ 4642{
3602 w->sent = 1; 4643 w->sent = 1;
3603 evpipe_write (EV_A_ &async_pending); 4644 evpipe_write (EV_A_ &async_pending);
3604} 4645}
3605#endif 4646#endif
… …
3642 4683
3643 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4684 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3644} 4685}
3645 4686
3646void 4687void
3647ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4688ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3648{ 4689{
3649 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4690 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3650 4691
3651 if (expect_false (!once)) 4692 if (expect_false (!once))
3652 { 4693 {
… …
3673} 4714}
3674 4715
3675/*****************************************************************************/ 4716/*****************************************************************************/
3676 4717
3677#if EV_WALK_ENABLE 4718#if EV_WALK_ENABLE
3678void 4719void ecb_cold
3679ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4720ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3680{ 4721{
3681 int i, j; 4722 int i, j;
3682 ev_watcher_list *wl, *wn; 4723 ev_watcher_list *wl, *wn;
3683 4724
3684 if (types & (EV_IO | EV_EMBED)) 4725 if (types & (EV_IO | EV_EMBED))
… …
3727 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4768 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3728#endif 4769#endif
3729 4770
3730#if EV_IDLE_ENABLE 4771#if EV_IDLE_ENABLE
3731 if (types & EV_IDLE) 4772 if (types & EV_IDLE)
3732 for (j = NUMPRI; i--; ) 4773 for (j = NUMPRI; j--; )
3733 for (i = idlecnt [j]; i--; ) 4774 for (i = idlecnt [j]; i--; )
3734 cb (EV_A_ EV_IDLE, idles [j][i]); 4775 cb (EV_A_ EV_IDLE, idles [j][i]);
3735#endif 4776#endif
3736 4777
3737#if EV_FORK_ENABLE 4778#if EV_FORK_ENABLE
… …
3790 4831
3791#if EV_MULTIPLICITY 4832#if EV_MULTIPLICITY
3792 #include "ev_wrap.h" 4833 #include "ev_wrap.h"
3793#endif 4834#endif
3794 4835
3795#ifdef __cplusplus
3796}
3797#endif
3798

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