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Comparing libev/ev.c (file contents):
Revision 1.346 by root, Thu Oct 14 05:07:04 2010 UTC vs.
Revision 1.458 by root, Sun Oct 27 16:26:07 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
… …
207#define _DARWIN_UNLIMITED_SELECT 1 220#define _DARWIN_UNLIMITED_SELECT 1
208 221
209/* 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 */
210 223
211/* try to deduce the maximum number of signals on this platform */ 224/* try to deduce the maximum number of signals on this platform */
212#if defined (EV_NSIG) 225#if defined EV_NSIG
213/* use what's provided */ 226/* use what's provided */
214#elif defined (NSIG) 227#elif defined NSIG
215# define EV_NSIG (NSIG) 228# define EV_NSIG (NSIG)
216#elif defined(_NSIG) 229#elif defined _NSIG
217# define EV_NSIG (_NSIG) 230# define EV_NSIG (_NSIG)
218#elif defined (SIGMAX) 231#elif defined SIGMAX
219# define EV_NSIG (SIGMAX+1) 232# define EV_NSIG (SIGMAX+1)
220#elif defined (SIG_MAX) 233#elif defined SIG_MAX
221# define EV_NSIG (SIG_MAX+1) 234# define EV_NSIG (SIG_MAX+1)
222#elif defined (_SIG_MAX) 235#elif defined _SIG_MAX
223# define EV_NSIG (_SIG_MAX+1) 236# define EV_NSIG (_SIG_MAX+1)
224#elif defined (MAXSIG) 237#elif defined MAXSIG
225# define EV_NSIG (MAXSIG+1) 238# define EV_NSIG (MAXSIG+1)
226#elif defined (MAX_SIG) 239#elif defined MAX_SIG
227# define EV_NSIG (MAX_SIG+1) 240# define EV_NSIG (MAX_SIG+1)
228#elif defined (SIGARRAYSIZE) 241#elif defined SIGARRAYSIZE
229# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 242# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
230#elif defined (_sys_nsig) 243#elif defined _sys_nsig
231# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 244# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
232#else 245#else
233# error "unable to find value for NSIG, please report" 246# error "unable to find value for NSIG, please report"
234/* to make it compile regardless, just remove the above line, */ 247/* to make it compile regardless, just remove the above line, */
235/* but consider reporting it, too! :) */ 248/* but consider reporting it, too! :) */
236# define EV_NSIG 65 249# define EV_NSIG 65
237#endif 250#endif
238 251
252#ifndef EV_USE_FLOOR
253# define EV_USE_FLOOR 0
254#endif
255
239#ifndef EV_USE_CLOCK_SYSCALL 256#ifndef EV_USE_CLOCK_SYSCALL
240# if __linux && __GLIBC__ >= 2 257# if __linux && __GLIBC__ >= 2
241# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 258# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
242# else 259# else
243# define EV_USE_CLOCK_SYSCALL 0 260# define EV_USE_CLOCK_SYSCALL 0
244# endif 261# endif
245#endif 262#endif
246 263
247#ifndef EV_USE_MONOTONIC 264#ifndef EV_USE_MONOTONIC
248# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 265# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
249# define EV_USE_MONOTONIC EV_FEATURE_OS 266# define EV_USE_MONOTONIC EV_FEATURE_OS
250# else 267# else
251# define EV_USE_MONOTONIC 0 268# define EV_USE_MONOTONIC 0
252# endif 269# endif
253#endif 270#endif
… …
340 357
341#ifndef EV_HEAP_CACHE_AT 358#ifndef EV_HEAP_CACHE_AT
342# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 359# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
343#endif 360#endif
344 361
362#ifdef ANDROID
363/* supposedly, android doesn't typedef fd_mask */
364# undef EV_USE_SELECT
365# define EV_USE_SELECT 0
366/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
367# undef EV_USE_CLOCK_SYSCALL
368# define EV_USE_CLOCK_SYSCALL 0
369#endif
370
371/* aix's poll.h seems to cause lots of trouble */
372#ifdef _AIX
373/* AIX has a completely broken poll.h header */
374# undef EV_USE_POLL
375# define EV_USE_POLL 0
376#endif
377
345/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 378/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
346/* which makes programs even slower. might work on other unices, too. */ 379/* which makes programs even slower. might work on other unices, too. */
347#if EV_USE_CLOCK_SYSCALL 380#if EV_USE_CLOCK_SYSCALL
348# include <syscall.h> 381# include <sys/syscall.h>
349# ifdef SYS_clock_gettime 382# ifdef SYS_clock_gettime
350# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 383# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
351# undef EV_USE_MONOTONIC 384# undef EV_USE_MONOTONIC
352# define EV_USE_MONOTONIC 1 385# define EV_USE_MONOTONIC 1
353# else 386# else
… …
356# endif 389# endif
357#endif 390#endif
358 391
359/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 392/* this block fixes any misconfiguration where we know we run into trouble otherwise */
360 393
361#ifdef _AIX
362/* AIX has a completely broken poll.h header */
363# undef EV_USE_POLL
364# define EV_USE_POLL 0
365#endif
366
367#ifndef CLOCK_MONOTONIC 394#ifndef CLOCK_MONOTONIC
368# undef EV_USE_MONOTONIC 395# undef EV_USE_MONOTONIC
369# define EV_USE_MONOTONIC 0 396# define EV_USE_MONOTONIC 0
370#endif 397#endif
371 398
… …
378# undef EV_USE_INOTIFY 405# undef EV_USE_INOTIFY
379# define EV_USE_INOTIFY 0 406# define EV_USE_INOTIFY 0
380#endif 407#endif
381 408
382#if !EV_USE_NANOSLEEP 409#if !EV_USE_NANOSLEEP
383# ifndef _WIN32 410/* hp-ux has it in sys/time.h, which we unconditionally include above */
411# if !defined _WIN32 && !defined __hpux
384# include <sys/select.h> 412# include <sys/select.h>
385# endif 413# endif
386#endif 414#endif
387 415
388#if EV_USE_INOTIFY 416#if EV_USE_INOTIFY
389# include <sys/utsname.h>
390# include <sys/statfs.h> 417# include <sys/statfs.h>
391# include <sys/inotify.h> 418# include <sys/inotify.h>
392/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 419/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
393# ifndef IN_DONT_FOLLOW 420# ifndef IN_DONT_FOLLOW
394# undef EV_USE_INOTIFY 421# undef EV_USE_INOTIFY
395# define EV_USE_INOTIFY 0 422# define EV_USE_INOTIFY 0
396# endif 423# endif
397#endif
398
399#if EV_SELECT_IS_WINSOCKET
400# include <winsock.h>
401#endif 424#endif
402 425
403#if EV_USE_EVENTFD 426#if EV_USE_EVENTFD
404/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 427/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
405# include <stdint.h> 428# include <stdint.h>
… …
411# define EFD_CLOEXEC O_CLOEXEC 434# define EFD_CLOEXEC O_CLOEXEC
412# else 435# else
413# define EFD_CLOEXEC 02000000 436# define EFD_CLOEXEC 02000000
414# endif 437# endif
415# endif 438# endif
416# ifdef __cplusplus
417extern "C" {
418# endif
419int (eventfd) (unsigned int initval, int flags); 439EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
420# ifdef __cplusplus
421}
422# endif
423#endif 440#endif
424 441
425#if EV_USE_SIGNALFD 442#if EV_USE_SIGNALFD
426/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 443/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
427# include <stdint.h> 444# include <stdint.h>
… …
433# define SFD_CLOEXEC O_CLOEXEC 450# define SFD_CLOEXEC O_CLOEXEC
434# else 451# else
435# define SFD_CLOEXEC 02000000 452# define SFD_CLOEXEC 02000000
436# endif 453# endif
437# endif 454# endif
438# ifdef __cplusplus
439extern "C" {
440# endif
441int signalfd (int fd, const sigset_t *mask, int flags); 455EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
442 456
443struct signalfd_siginfo 457struct signalfd_siginfo
444{ 458{
445 uint32_t ssi_signo; 459 uint32_t ssi_signo;
446 char pad[128 - sizeof (uint32_t)]; 460 char pad[128 - sizeof (uint32_t)];
447}; 461};
448# ifdef __cplusplus
449}
450# endif 462#endif
451#endif
452
453 463
454/**/ 464/**/
455 465
456#if EV_VERIFY >= 3 466#if EV_VERIFY >= 3
457# define EV_FREQUENT_CHECK ev_verify (EV_A) 467# define EV_FREQUENT_CHECK ev_verify (EV_A)
458#else 468#else
459# define EV_FREQUENT_CHECK do { } while (0) 469# define EV_FREQUENT_CHECK do { } while (0)
460#endif 470#endif
461 471
462/* 472/*
463 * This is used to avoid floating point rounding problems. 473 * This is used to work around floating point rounding problems.
464 * It is added to ev_rt_now when scheduling periodics
465 * to ensure progress, time-wise, even when rounding
466 * errors are against us.
467 * This value is good at least till the year 4000. 474 * This value is good at least till the year 4000.
468 * Better solutions welcome.
469 */ 475 */
470#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 476#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
477/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
471 478
472#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 479#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
473#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 480#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
474 481
482#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
483#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
484
485/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
486/* ECB.H BEGIN */
487/*
488 * libecb - http://software.schmorp.de/pkg/libecb
489 *
490 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de>
491 * Copyright (©) 2011 Emanuele Giaquinta
492 * All rights reserved.
493 *
494 * Redistribution and use in source and binary forms, with or without modifica-
495 * tion, are permitted provided that the following conditions are met:
496 *
497 * 1. Redistributions of source code must retain the above copyright notice,
498 * this list of conditions and the following disclaimer.
499 *
500 * 2. Redistributions in binary form must reproduce the above copyright
501 * notice, this list of conditions and the following disclaimer in the
502 * documentation and/or other materials provided with the distribution.
503 *
504 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
505 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
506 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
507 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
508 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
509 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
510 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
511 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
512 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
513 * OF THE POSSIBILITY OF SUCH DAMAGE.
514 */
515
516#ifndef ECB_H
517#define ECB_H
518
519/* 16 bits major, 16 bits minor */
520#define ECB_VERSION 0x00010003
521
522#ifdef _WIN32
523 typedef signed char int8_t;
524 typedef unsigned char uint8_t;
525 typedef signed short int16_t;
526 typedef unsigned short uint16_t;
527 typedef signed int int32_t;
528 typedef unsigned int uint32_t;
475#if __GNUC__ >= 4 529 #if __GNUC__
476# define expect(expr,value) __builtin_expect ((expr),(value)) 530 typedef signed long long int64_t;
477# define noinline __attribute__ ((noinline)) 531 typedef unsigned long long uint64_t;
532 #else /* _MSC_VER || __BORLANDC__ */
533 typedef signed __int64 int64_t;
534 typedef unsigned __int64 uint64_t;
535 #endif
536 #ifdef _WIN64
537 #define ECB_PTRSIZE 8
538 typedef uint64_t uintptr_t;
539 typedef int64_t intptr_t;
540 #else
541 #define ECB_PTRSIZE 4
542 typedef uint32_t uintptr_t;
543 typedef int32_t intptr_t;
544 #endif
478#else 545#else
479# define expect(expr,value) (expr) 546 #include <inttypes.h>
480# define noinline 547 #if UINTMAX_MAX > 0xffffffffU
481# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 548 #define ECB_PTRSIZE 8
482# define inline 549 #else
550 #define ECB_PTRSIZE 4
551 #endif
483# endif 552#endif
553
554/* work around x32 idiocy by defining proper macros */
555#if __x86_64 || _M_AMD64
556 #if _ILP32
557 #define ECB_AMD64_X32 1
558 #else
559 #define ECB_AMD64 1
484#endif 560 #endif
561#endif
485 562
563/* many compilers define _GNUC_ to some versions but then only implement
564 * what their idiot authors think are the "more important" extensions,
565 * causing enormous grief in return for some better fake benchmark numbers.
566 * or so.
567 * we try to detect these and simply assume they are not gcc - if they have
568 * an issue with that they should have done it right in the first place.
569 */
570#ifndef ECB_GCC_VERSION
571 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
572 #define ECB_GCC_VERSION(major,minor) 0
573 #else
574 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
575 #endif
576#endif
577
578#define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */
579#define ECB_C99 (__STDC_VERSION__ >= 199901L)
580#define ECB_C11 (__STDC_VERSION__ >= 201112L)
581#define ECB_CPP (__cplusplus+0)
582#define ECB_CPP11 (__cplusplus >= 201103L)
583
584#if ECB_CPP
585 #define ECB_EXTERN_C extern "C"
586 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
587 #define ECB_EXTERN_C_END }
588#else
589 #define ECB_EXTERN_C extern
590 #define ECB_EXTERN_C_BEG
591 #define ECB_EXTERN_C_END
592#endif
593
594/*****************************************************************************/
595
596/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
597/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
598
599#if ECB_NO_THREADS
600 #define ECB_NO_SMP 1
601#endif
602
603#if ECB_NO_SMP
604 #define ECB_MEMORY_FENCE do { } while (0)
605#endif
606
607#ifndef ECB_MEMORY_FENCE
608 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
609 #if __i386 || __i386__
610 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
611 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
612 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
613 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
614 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
615 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
616 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
617 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
618 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
619 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
620 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
621 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
622 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
623 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
624 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
625 #elif __sparc || __sparc__
626 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
627 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
628 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
629 #elif defined __s390__ || defined __s390x__
630 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
631 #elif defined __mips__
632 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
633 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
634 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
635 #elif defined __alpha__
636 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
637 #elif defined __hppa__
638 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
639 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
640 #elif defined __ia64__
641 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
642 #elif defined __m68k__
643 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
644 #elif defined __m88k__
645 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
646 #elif defined __sh__
647 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
648 #endif
649 #endif
650#endif
651
652#ifndef ECB_MEMORY_FENCE
653 #if ECB_GCC_VERSION(4,7)
654 /* see comment below (stdatomic.h) about the C11 memory model. */
655 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
656
657 /* The __has_feature syntax from clang is so misdesigned that we cannot use it
658 * without risking compile time errors with other compilers. We *could*
659 * define our own ecb_clang_has_feature, but I just can't be bothered to work
660 * around this shit time and again.
661 * #elif defined __clang && __has_feature (cxx_atomic)
662 * // see comment below (stdatomic.h) about the C11 memory model.
663 * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
664 */
665
666 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
667 #define ECB_MEMORY_FENCE __sync_synchronize ()
668 #elif _MSC_VER >= 1400 /* VC++ 2005 */
669 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
670 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
671 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
672 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
673 #elif defined _WIN32
674 #include <WinNT.h>
675 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
676 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
677 #include <mbarrier.h>
678 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
679 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
680 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
681 #elif __xlC__
682 #define ECB_MEMORY_FENCE __sync ()
683 #endif
684#endif
685
686#ifndef ECB_MEMORY_FENCE
687 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
688 /* we assume that these memory fences work on all variables/all memory accesses, */
689 /* not just C11 atomics and atomic accesses */
690 #include <stdatomic.h>
691 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
692 /* any fence other than seq_cst, which isn't very efficient for us. */
693 /* Why that is, we don't know - either the C11 memory model is quite useless */
694 /* for most usages, or gcc and clang have a bug */
695 /* I *currently* lean towards the latter, and inefficiently implement */
696 /* all three of ecb's fences as a seq_cst fence */
697 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
698 #endif
699#endif
700
701#ifndef ECB_MEMORY_FENCE
702 #if !ECB_AVOID_PTHREADS
703 /*
704 * if you get undefined symbol references to pthread_mutex_lock,
705 * or failure to find pthread.h, then you should implement
706 * the ECB_MEMORY_FENCE operations for your cpu/compiler
707 * OR provide pthread.h and link against the posix thread library
708 * of your system.
709 */
710 #include <pthread.h>
711 #define ECB_NEEDS_PTHREADS 1
712 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
713
714 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
715 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
716 #endif
717#endif
718
719#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
720 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
721#endif
722
723#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
724 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
725#endif
726
727/*****************************************************************************/
728
729#if __cplusplus
730 #define ecb_inline static inline
731#elif ECB_GCC_VERSION(2,5)
732 #define ecb_inline static __inline__
733#elif ECB_C99
734 #define ecb_inline static inline
735#else
736 #define ecb_inline static
737#endif
738
739#if ECB_GCC_VERSION(3,3)
740 #define ecb_restrict __restrict__
741#elif ECB_C99
742 #define ecb_restrict restrict
743#else
744 #define ecb_restrict
745#endif
746
747typedef int ecb_bool;
748
749#define ECB_CONCAT_(a, b) a ## b
750#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
751#define ECB_STRINGIFY_(a) # a
752#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
753
754#define ecb_function_ ecb_inline
755
756#if ECB_GCC_VERSION(3,1)
757 #define ecb_attribute(attrlist) __attribute__(attrlist)
758 #define ecb_is_constant(expr) __builtin_constant_p (expr)
759 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
760 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
761#else
762 #define ecb_attribute(attrlist)
763 #define ecb_is_constant(expr) 0
764 #define ecb_expect(expr,value) (expr)
765 #define ecb_prefetch(addr,rw,locality)
766#endif
767
768/* no emulation for ecb_decltype */
769#if ECB_GCC_VERSION(4,5)
770 #define ecb_decltype(x) __decltype(x)
771#elif ECB_GCC_VERSION(3,0)
772 #define ecb_decltype(x) __typeof(x)
773#endif
774
775#define ecb_noinline ecb_attribute ((__noinline__))
776#define ecb_unused ecb_attribute ((__unused__))
777#define ecb_const ecb_attribute ((__const__))
778#define ecb_pure ecb_attribute ((__pure__))
779
780#if ECB_C11
781 #define ecb_noreturn _Noreturn
782#else
783 #define ecb_noreturn ecb_attribute ((__noreturn__))
784#endif
785
786#if ECB_GCC_VERSION(4,3)
787 #define ecb_artificial ecb_attribute ((__artificial__))
788 #define ecb_hot ecb_attribute ((__hot__))
789 #define ecb_cold ecb_attribute ((__cold__))
790#else
791 #define ecb_artificial
792 #define ecb_hot
793 #define ecb_cold
794#endif
795
796/* put around conditional expressions if you are very sure that the */
797/* expression is mostly true or mostly false. note that these return */
798/* booleans, not the expression. */
486#define expect_false(expr) expect ((expr) != 0, 0) 799#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
487#define expect_true(expr) expect ((expr) != 0, 1) 800#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
801/* for compatibility to the rest of the world */
802#define ecb_likely(expr) ecb_expect_true (expr)
803#define ecb_unlikely(expr) ecb_expect_false (expr)
804
805/* count trailing zero bits and count # of one bits */
806#if ECB_GCC_VERSION(3,4)
807 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
808 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
809 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
810 #define ecb_ctz32(x) __builtin_ctz (x)
811 #define ecb_ctz64(x) __builtin_ctzll (x)
812 #define ecb_popcount32(x) __builtin_popcount (x)
813 /* no popcountll */
814#else
815 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
816 ecb_function_ int
817 ecb_ctz32 (uint32_t x)
818 {
819 int r = 0;
820
821 x &= ~x + 1; /* this isolates the lowest bit */
822
823#if ECB_branchless_on_i386
824 r += !!(x & 0xaaaaaaaa) << 0;
825 r += !!(x & 0xcccccccc) << 1;
826 r += !!(x & 0xf0f0f0f0) << 2;
827 r += !!(x & 0xff00ff00) << 3;
828 r += !!(x & 0xffff0000) << 4;
829#else
830 if (x & 0xaaaaaaaa) r += 1;
831 if (x & 0xcccccccc) r += 2;
832 if (x & 0xf0f0f0f0) r += 4;
833 if (x & 0xff00ff00) r += 8;
834 if (x & 0xffff0000) r += 16;
835#endif
836
837 return r;
838 }
839
840 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
841 ecb_function_ int
842 ecb_ctz64 (uint64_t x)
843 {
844 int shift = x & 0xffffffffU ? 0 : 32;
845 return ecb_ctz32 (x >> shift) + shift;
846 }
847
848 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
849 ecb_function_ int
850 ecb_popcount32 (uint32_t x)
851 {
852 x -= (x >> 1) & 0x55555555;
853 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
854 x = ((x >> 4) + x) & 0x0f0f0f0f;
855 x *= 0x01010101;
856
857 return x >> 24;
858 }
859
860 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
861 ecb_function_ int ecb_ld32 (uint32_t x)
862 {
863 int r = 0;
864
865 if (x >> 16) { x >>= 16; r += 16; }
866 if (x >> 8) { x >>= 8; r += 8; }
867 if (x >> 4) { x >>= 4; r += 4; }
868 if (x >> 2) { x >>= 2; r += 2; }
869 if (x >> 1) { r += 1; }
870
871 return r;
872 }
873
874 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
875 ecb_function_ int ecb_ld64 (uint64_t x)
876 {
877 int r = 0;
878
879 if (x >> 32) { x >>= 32; r += 32; }
880
881 return r + ecb_ld32 (x);
882 }
883#endif
884
885ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;
886ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
887ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;
888ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
889
890ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
891ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
892{
893 return ( (x * 0x0802U & 0x22110U)
894 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
895}
896
897ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
898ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
899{
900 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
901 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
902 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
903 x = ( x >> 8 ) | ( x << 8);
904
905 return x;
906}
907
908ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
909ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
910{
911 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
912 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
913 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
914 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
915 x = ( x >> 16 ) | ( x << 16);
916
917 return x;
918}
919
920/* popcount64 is only available on 64 bit cpus as gcc builtin */
921/* so for this version we are lazy */
922ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
923ecb_function_ int
924ecb_popcount64 (uint64_t x)
925{
926 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
927}
928
929ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
930ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
931ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
932ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
933ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
934ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
935ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
936ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
937
938ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
939ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
940ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
941ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
942ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
943ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
944ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
945ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
946
947#if ECB_GCC_VERSION(4,3)
948 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
949 #define ecb_bswap32(x) __builtin_bswap32 (x)
950 #define ecb_bswap64(x) __builtin_bswap64 (x)
951#else
952 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
953 ecb_function_ uint16_t
954 ecb_bswap16 (uint16_t x)
955 {
956 return ecb_rotl16 (x, 8);
957 }
958
959 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
960 ecb_function_ uint32_t
961 ecb_bswap32 (uint32_t x)
962 {
963 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
964 }
965
966 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
967 ecb_function_ uint64_t
968 ecb_bswap64 (uint64_t x)
969 {
970 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
971 }
972#endif
973
974#if ECB_GCC_VERSION(4,5)
975 #define ecb_unreachable() __builtin_unreachable ()
976#else
977 /* this seems to work fine, but gcc always emits a warning for it :/ */
978 ecb_inline void ecb_unreachable (void) ecb_noreturn;
979 ecb_inline void ecb_unreachable (void) { }
980#endif
981
982/* try to tell the compiler that some condition is definitely true */
983#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
984
985ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
986ecb_inline unsigned char
987ecb_byteorder_helper (void)
988{
989 /* the union code still generates code under pressure in gcc, */
990 /* but less than using pointers, and always seems to */
991 /* successfully return a constant. */
992 /* the reason why we have this horrible preprocessor mess */
993 /* is to avoid it in all cases, at least on common architectures */
994 /* or when using a recent enough gcc version (>= 4.6) */
995#if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64
996 return 0x44;
997#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
998 return 0x44;
999#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
1000 return 0x11;
1001#else
1002 union
1003 {
1004 uint32_t i;
1005 uint8_t c;
1006 } u = { 0x11223344 };
1007 return u.c;
1008#endif
1009}
1010
1011ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
1012ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
1013ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
1014ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
1015
1016#if ECB_GCC_VERSION(3,0) || ECB_C99
1017 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1018#else
1019 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1020#endif
1021
1022#if __cplusplus
1023 template<typename T>
1024 static inline T ecb_div_rd (T val, T div)
1025 {
1026 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1027 }
1028 template<typename T>
1029 static inline T ecb_div_ru (T val, T div)
1030 {
1031 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1032 }
1033#else
1034 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1035 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1036#endif
1037
1038#if ecb_cplusplus_does_not_suck
1039 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1040 template<typename T, int N>
1041 static inline int ecb_array_length (const T (&arr)[N])
1042 {
1043 return N;
1044 }
1045#else
1046 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1047#endif
1048
1049/*******************************************************************************/
1050/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1051
1052/* basically, everything uses "ieee pure-endian" floating point numbers */
1053/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1054#if 0 \
1055 || __i386 || __i386__ \
1056 || __amd64 || __amd64__ || __x86_64 || __x86_64__ \
1057 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1058 || defined __arm__ && defined __ARM_EABI__ \
1059 || defined __s390__ || defined __s390x__ \
1060 || defined __mips__ \
1061 || defined __alpha__ \
1062 || defined __hppa__ \
1063 || defined __ia64__ \
1064 || defined __m68k__ \
1065 || defined __m88k__ \
1066 || defined __sh__ \
1067 || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64
1068 #define ECB_STDFP 1
1069 #include <string.h> /* for memcpy */
1070#else
1071 #define ECB_STDFP 0
1072#endif
1073
1074#ifndef ECB_NO_LIBM
1075
1076 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1077
1078 #ifdef NEN
1079 #define ECB_NAN NAN
1080 #else
1081 #define ECB_NAN INFINITY
1082 #endif
1083
1084 /* converts an ieee half/binary16 to a float */
1085 ecb_function_ float ecb_binary16_to_float (uint16_t x) ecb_const;
1086 ecb_function_ float
1087 ecb_binary16_to_float (uint16_t x)
1088 {
1089 int e = (x >> 10) & 0x1f;
1090 int m = x & 0x3ff;
1091 float r;
1092
1093 if (!e ) r = ldexpf (m , -24);
1094 else if (e != 31) r = ldexpf (m + 0x400, e - 25);
1095 else if (m ) r = ECB_NAN;
1096 else r = INFINITY;
1097
1098 return x & 0x8000 ? -r : r;
1099 }
1100
1101 /* convert a float to ieee single/binary32 */
1102 ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const;
1103 ecb_function_ uint32_t
1104 ecb_float_to_binary32 (float x)
1105 {
1106 uint32_t r;
1107
1108 #if ECB_STDFP
1109 memcpy (&r, &x, 4);
1110 #else
1111 /* slow emulation, works for anything but -0 */
1112 uint32_t m;
1113 int e;
1114
1115 if (x == 0e0f ) return 0x00000000U;
1116 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1117 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1118 if (x != x ) return 0x7fbfffffU;
1119
1120 m = frexpf (x, &e) * 0x1000000U;
1121
1122 r = m & 0x80000000U;
1123
1124 if (r)
1125 m = -m;
1126
1127 if (e <= -126)
1128 {
1129 m &= 0xffffffU;
1130 m >>= (-125 - e);
1131 e = -126;
1132 }
1133
1134 r |= (e + 126) << 23;
1135 r |= m & 0x7fffffU;
1136 #endif
1137
1138 return r;
1139 }
1140
1141 /* converts an ieee single/binary32 to a float */
1142 ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const;
1143 ecb_function_ float
1144 ecb_binary32_to_float (uint32_t x)
1145 {
1146 float r;
1147
1148 #if ECB_STDFP
1149 memcpy (&r, &x, 4);
1150 #else
1151 /* emulation, only works for normals and subnormals and +0 */
1152 int neg = x >> 31;
1153 int e = (x >> 23) & 0xffU;
1154
1155 x &= 0x7fffffU;
1156
1157 if (e)
1158 x |= 0x800000U;
1159 else
1160 e = 1;
1161
1162 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1163 r = ldexpf (x * (0.5f / 0x800000U), e - 126);
1164
1165 r = neg ? -r : r;
1166 #endif
1167
1168 return r;
1169 }
1170
1171 /* convert a double to ieee double/binary64 */
1172 ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const;
1173 ecb_function_ uint64_t
1174 ecb_double_to_binary64 (double x)
1175 {
1176 uint64_t r;
1177
1178 #if ECB_STDFP
1179 memcpy (&r, &x, 8);
1180 #else
1181 /* slow emulation, works for anything but -0 */
1182 uint64_t m;
1183 int e;
1184
1185 if (x == 0e0 ) return 0x0000000000000000U;
1186 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1187 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1188 if (x != x ) return 0X7ff7ffffffffffffU;
1189
1190 m = frexp (x, &e) * 0x20000000000000U;
1191
1192 r = m & 0x8000000000000000;;
1193
1194 if (r)
1195 m = -m;
1196
1197 if (e <= -1022)
1198 {
1199 m &= 0x1fffffffffffffU;
1200 m >>= (-1021 - e);
1201 e = -1022;
1202 }
1203
1204 r |= ((uint64_t)(e + 1022)) << 52;
1205 r |= m & 0xfffffffffffffU;
1206 #endif
1207
1208 return r;
1209 }
1210
1211 /* converts an ieee double/binary64 to a double */
1212 ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const;
1213 ecb_function_ double
1214 ecb_binary64_to_double (uint64_t x)
1215 {
1216 double r;
1217
1218 #if ECB_STDFP
1219 memcpy (&r, &x, 8);
1220 #else
1221 /* emulation, only works for normals and subnormals and +0 */
1222 int neg = x >> 63;
1223 int e = (x >> 52) & 0x7ffU;
1224
1225 x &= 0xfffffffffffffU;
1226
1227 if (e)
1228 x |= 0x10000000000000U;
1229 else
1230 e = 1;
1231
1232 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1233 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1234
1235 r = neg ? -r : r;
1236 #endif
1237
1238 return r;
1239 }
1240
1241#endif
1242
1243#endif
1244
1245/* ECB.H END */
1246
1247#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1248/* if your architecture doesn't need memory fences, e.g. because it is
1249 * single-cpu/core, or if you use libev in a project that doesn't use libev
1250 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1251 * libev, in which cases the memory fences become nops.
1252 * alternatively, you can remove this #error and link against libpthread,
1253 * which will then provide the memory fences.
1254 */
1255# error "memory fences not defined for your architecture, please report"
1256#endif
1257
1258#ifndef ECB_MEMORY_FENCE
1259# define ECB_MEMORY_FENCE do { } while (0)
1260# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1261# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1262#endif
1263
1264#define expect_false(cond) ecb_expect_false (cond)
1265#define expect_true(cond) ecb_expect_true (cond)
1266#define noinline ecb_noinline
1267
488#define inline_size static inline 1268#define inline_size ecb_inline
489 1269
490#if EV_FEATURE_CODE 1270#if EV_FEATURE_CODE
491# define inline_speed static inline 1271# define inline_speed ecb_inline
492#else 1272#else
493# define inline_speed static noinline 1273# define inline_speed static noinline
494#endif 1274#endif
495 1275
496#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1276#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
… …
535# include "ev_win32.c" 1315# include "ev_win32.c"
536#endif 1316#endif
537 1317
538/*****************************************************************************/ 1318/*****************************************************************************/
539 1319
1320/* define a suitable floor function (only used by periodics atm) */
1321
1322#if EV_USE_FLOOR
1323# include <math.h>
1324# define ev_floor(v) floor (v)
1325#else
1326
1327#include <float.h>
1328
1329/* a floor() replacement function, should be independent of ev_tstamp type */
1330static ev_tstamp noinline
1331ev_floor (ev_tstamp v)
1332{
1333 /* the choice of shift factor is not terribly important */
1334#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1335 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1336#else
1337 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1338#endif
1339
1340 /* argument too large for an unsigned long? */
1341 if (expect_false (v >= shift))
1342 {
1343 ev_tstamp f;
1344
1345 if (v == v - 1.)
1346 return v; /* very large number */
1347
1348 f = shift * ev_floor (v * (1. / shift));
1349 return f + ev_floor (v - f);
1350 }
1351
1352 /* special treatment for negative args? */
1353 if (expect_false (v < 0.))
1354 {
1355 ev_tstamp f = -ev_floor (-v);
1356
1357 return f - (f == v ? 0 : 1);
1358 }
1359
1360 /* fits into an unsigned long */
1361 return (unsigned long)v;
1362}
1363
1364#endif
1365
1366/*****************************************************************************/
1367
1368#ifdef __linux
1369# include <sys/utsname.h>
1370#endif
1371
1372static unsigned int noinline ecb_cold
1373ev_linux_version (void)
1374{
1375#ifdef __linux
1376 unsigned int v = 0;
1377 struct utsname buf;
1378 int i;
1379 char *p = buf.release;
1380
1381 if (uname (&buf))
1382 return 0;
1383
1384 for (i = 3+1; --i; )
1385 {
1386 unsigned int c = 0;
1387
1388 for (;;)
1389 {
1390 if (*p >= '0' && *p <= '9')
1391 c = c * 10 + *p++ - '0';
1392 else
1393 {
1394 p += *p == '.';
1395 break;
1396 }
1397 }
1398
1399 v = (v << 8) | c;
1400 }
1401
1402 return v;
1403#else
1404 return 0;
1405#endif
1406}
1407
1408/*****************************************************************************/
1409
540#if EV_AVOID_STDIO 1410#if EV_AVOID_STDIO
541static void noinline 1411static void noinline ecb_cold
542ev_printerr (const char *msg) 1412ev_printerr (const char *msg)
543{ 1413{
544 write (STDERR_FILENO, msg, strlen (msg)); 1414 write (STDERR_FILENO, msg, strlen (msg));
545} 1415}
546#endif 1416#endif
547 1417
548static void (*syserr_cb)(const char *msg); 1418static void (*syserr_cb)(const char *msg) EV_THROW;
549 1419
550void 1420void ecb_cold
551ev_set_syserr_cb (void (*cb)(const char *msg)) 1421ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
552{ 1422{
553 syserr_cb = cb; 1423 syserr_cb = cb;
554} 1424}
555 1425
556static void noinline 1426static void noinline ecb_cold
557ev_syserr (const char *msg) 1427ev_syserr (const char *msg)
558{ 1428{
559 if (!msg) 1429 if (!msg)
560 msg = "(libev) system error"; 1430 msg = "(libev) system error";
561 1431
562 if (syserr_cb) 1432 if (syserr_cb)
563 syserr_cb (msg); 1433 syserr_cb (msg);
564 else 1434 else
565 { 1435 {
566#if EV_AVOID_STDIO 1436#if EV_AVOID_STDIO
567 const char *err = strerror (errno);
568
569 ev_printerr (msg); 1437 ev_printerr (msg);
570 ev_printerr (": "); 1438 ev_printerr (": ");
571 ev_printerr (err); 1439 ev_printerr (strerror (errno));
572 ev_printerr ("\n"); 1440 ev_printerr ("\n");
573#else 1441#else
574 perror (msg); 1442 perror (msg);
575#endif 1443#endif
576 abort (); 1444 abort ();
577 } 1445 }
578} 1446}
579 1447
580static void * 1448static void *
581ev_realloc_emul (void *ptr, long size) 1449ev_realloc_emul (void *ptr, long size) EV_THROW
582{ 1450{
583#if __GLIBC__
584 return realloc (ptr, size);
585#else
586 /* some systems, notably openbsd and darwin, fail to properly 1451 /* some systems, notably openbsd and darwin, fail to properly
587 * implement realloc (x, 0) (as required by both ansi c-89 and 1452 * implement realloc (x, 0) (as required by both ansi c-89 and
588 * the single unix specification, so work around them here. 1453 * the single unix specification, so work around them here.
1454 * recently, also (at least) fedora and debian started breaking it,
1455 * despite documenting it otherwise.
589 */ 1456 */
590 1457
591 if (size) 1458 if (size)
592 return realloc (ptr, size); 1459 return realloc (ptr, size);
593 1460
594 free (ptr); 1461 free (ptr);
595 return 0; 1462 return 0;
596#endif
597} 1463}
598 1464
599static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1465static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
600 1466
601void 1467void ecb_cold
602ev_set_allocator (void *(*cb)(void *ptr, long size)) 1468ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
603{ 1469{
604 alloc = cb; 1470 alloc = cb;
605} 1471}
606 1472
607inline_speed void * 1473inline_speed void *
… …
610 ptr = alloc (ptr, size); 1476 ptr = alloc (ptr, size);
611 1477
612 if (!ptr && size) 1478 if (!ptr && size)
613 { 1479 {
614#if EV_AVOID_STDIO 1480#if EV_AVOID_STDIO
615 ev_printerr ("libev: memory allocation failed, aborting.\n"); 1481 ev_printerr ("(libev) memory allocation failed, aborting.\n");
616#else 1482#else
617 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1483 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
618#endif 1484#endif
619 abort (); 1485 abort ();
620 } 1486 }
621 1487
622 return ptr; 1488 return ptr;
… …
639 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1505 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
640 unsigned char unused; 1506 unsigned char unused;
641#if EV_USE_EPOLL 1507#if EV_USE_EPOLL
642 unsigned int egen; /* generation counter to counter epoll bugs */ 1508 unsigned int egen; /* generation counter to counter epoll bugs */
643#endif 1509#endif
644#if EV_SELECT_IS_WINSOCKET 1510#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
645 SOCKET handle; 1511 SOCKET handle;
1512#endif
1513#if EV_USE_IOCP
1514 OVERLAPPED or, ow;
646#endif 1515#endif
647} ANFD; 1516} ANFD;
648 1517
649/* stores the pending event set for a given watcher */ 1518/* stores the pending event set for a given watcher */
650typedef struct 1519typedef struct
… …
692 #undef VAR 1561 #undef VAR
693 }; 1562 };
694 #include "ev_wrap.h" 1563 #include "ev_wrap.h"
695 1564
696 static struct ev_loop default_loop_struct; 1565 static struct ev_loop default_loop_struct;
697 struct ev_loop *ev_default_loop_ptr; 1566 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
698 1567
699#else 1568#else
700 1569
701 ev_tstamp ev_rt_now; 1570 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
702 #define VAR(name,decl) static decl; 1571 #define VAR(name,decl) static decl;
703 #include "ev_vars.h" 1572 #include "ev_vars.h"
704 #undef VAR 1573 #undef VAR
705 1574
706 static int ev_default_loop_ptr; 1575 static int ev_default_loop_ptr;
… …
715# define EV_RELEASE_CB (void)0 1584# define EV_RELEASE_CB (void)0
716# define EV_ACQUIRE_CB (void)0 1585# define EV_ACQUIRE_CB (void)0
717# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1586# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
718#endif 1587#endif
719 1588
720#define EVUNLOOP_RECURSE 0x80 1589#define EVBREAK_RECURSE 0x80
721 1590
722/*****************************************************************************/ 1591/*****************************************************************************/
723 1592
724#ifndef EV_HAVE_EV_TIME 1593#ifndef EV_HAVE_EV_TIME
725ev_tstamp 1594ev_tstamp
726ev_time (void) 1595ev_time (void) EV_THROW
727{ 1596{
728#if EV_USE_REALTIME 1597#if EV_USE_REALTIME
729 if (expect_true (have_realtime)) 1598 if (expect_true (have_realtime))
730 { 1599 {
731 struct timespec ts; 1600 struct timespec ts;
… …
755 return ev_time (); 1624 return ev_time ();
756} 1625}
757 1626
758#if EV_MULTIPLICITY 1627#if EV_MULTIPLICITY
759ev_tstamp 1628ev_tstamp
760ev_now (EV_P) 1629ev_now (EV_P) EV_THROW
761{ 1630{
762 return ev_rt_now; 1631 return ev_rt_now;
763} 1632}
764#endif 1633#endif
765 1634
766void 1635void
767ev_sleep (ev_tstamp delay) 1636ev_sleep (ev_tstamp delay) EV_THROW
768{ 1637{
769 if (delay > 0.) 1638 if (delay > 0.)
770 { 1639 {
771#if EV_USE_NANOSLEEP 1640#if EV_USE_NANOSLEEP
772 struct timespec ts; 1641 struct timespec ts;
773 1642
774 ts.tv_sec = (time_t)delay; 1643 EV_TS_SET (ts, delay);
775 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
776
777 nanosleep (&ts, 0); 1644 nanosleep (&ts, 0);
778#elif defined(_WIN32) 1645#elif defined _WIN32
779 Sleep ((unsigned long)(delay * 1e3)); 1646 Sleep ((unsigned long)(delay * 1e3));
780#else 1647#else
781 struct timeval tv; 1648 struct timeval tv;
782 1649
783 tv.tv_sec = (time_t)delay;
784 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
785
786 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1650 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
787 /* something not guaranteed by newer posix versions, but guaranteed */ 1651 /* something not guaranteed by newer posix versions, but guaranteed */
788 /* by older ones */ 1652 /* by older ones */
1653 EV_TV_SET (tv, delay);
789 select (0, 0, 0, 0, &tv); 1654 select (0, 0, 0, 0, &tv);
790#endif 1655#endif
791 } 1656 }
792} 1657}
793 1658
… …
804 1669
805 do 1670 do
806 ncur <<= 1; 1671 ncur <<= 1;
807 while (cnt > ncur); 1672 while (cnt > ncur);
808 1673
809 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1674 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
810 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1675 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
811 { 1676 {
812 ncur *= elem; 1677 ncur *= elem;
813 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1678 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
814 ncur = ncur - sizeof (void *) * 4; 1679 ncur = ncur - sizeof (void *) * 4;
… …
816 } 1681 }
817 1682
818 return ncur; 1683 return ncur;
819} 1684}
820 1685
821static noinline void * 1686static void * noinline ecb_cold
822array_realloc (int elem, void *base, int *cur, int cnt) 1687array_realloc (int elem, void *base, int *cur, int cnt)
823{ 1688{
824 *cur = array_nextsize (elem, *cur, cnt); 1689 *cur = array_nextsize (elem, *cur, cnt);
825 return ev_realloc (base, elem * *cur); 1690 return ev_realloc (base, elem * *cur);
826} 1691}
… …
829 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1694 memset ((void *)(base), 0, sizeof (*(base)) * (count))
830 1695
831#define array_needsize(type,base,cur,cnt,init) \ 1696#define array_needsize(type,base,cur,cnt,init) \
832 if (expect_false ((cnt) > (cur))) \ 1697 if (expect_false ((cnt) > (cur))) \
833 { \ 1698 { \
834 int ocur_ = (cur); \ 1699 int ecb_unused ocur_ = (cur); \
835 (base) = (type *)array_realloc \ 1700 (base) = (type *)array_realloc \
836 (sizeof (type), (base), &(cur), (cnt)); \ 1701 (sizeof (type), (base), &(cur), (cnt)); \
837 init ((base) + (ocur_), (cur) - ocur_); \ 1702 init ((base) + (ocur_), (cur) - ocur_); \
838 } 1703 }
839 1704
… …
857pendingcb (EV_P_ ev_prepare *w, int revents) 1722pendingcb (EV_P_ ev_prepare *w, int revents)
858{ 1723{
859} 1724}
860 1725
861void noinline 1726void noinline
862ev_feed_event (EV_P_ void *w, int revents) 1727ev_feed_event (EV_P_ void *w, int revents) EV_THROW
863{ 1728{
864 W w_ = (W)w; 1729 W w_ = (W)w;
865 int pri = ABSPRI (w_); 1730 int pri = ABSPRI (w_);
866 1731
867 if (expect_false (w_->pending)) 1732 if (expect_false (w_->pending))
… …
871 w_->pending = ++pendingcnt [pri]; 1736 w_->pending = ++pendingcnt [pri];
872 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1737 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
873 pendings [pri][w_->pending - 1].w = w_; 1738 pendings [pri][w_->pending - 1].w = w_;
874 pendings [pri][w_->pending - 1].events = revents; 1739 pendings [pri][w_->pending - 1].events = revents;
875 } 1740 }
1741
1742 pendingpri = NUMPRI - 1;
876} 1743}
877 1744
878inline_speed void 1745inline_speed void
879feed_reverse (EV_P_ W w) 1746feed_reverse (EV_P_ W w)
880{ 1747{
… …
926 if (expect_true (!anfd->reify)) 1793 if (expect_true (!anfd->reify))
927 fd_event_nocheck (EV_A_ fd, revents); 1794 fd_event_nocheck (EV_A_ fd, revents);
928} 1795}
929 1796
930void 1797void
931ev_feed_fd_event (EV_P_ int fd, int revents) 1798ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
932{ 1799{
933 if (fd >= 0 && fd < anfdmax) 1800 if (fd >= 0 && fd < anfdmax)
934 fd_event_nocheck (EV_A_ fd, revents); 1801 fd_event_nocheck (EV_A_ fd, revents);
935} 1802}
936 1803
… …
939inline_size void 1806inline_size void
940fd_reify (EV_P) 1807fd_reify (EV_P)
941{ 1808{
942 int i; 1809 int i;
943 1810
1811#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1812 for (i = 0; i < fdchangecnt; ++i)
1813 {
1814 int fd = fdchanges [i];
1815 ANFD *anfd = anfds + fd;
1816
1817 if (anfd->reify & EV__IOFDSET && anfd->head)
1818 {
1819 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1820
1821 if (handle != anfd->handle)
1822 {
1823 unsigned long arg;
1824
1825 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1826
1827 /* handle changed, but fd didn't - we need to do it in two steps */
1828 backend_modify (EV_A_ fd, anfd->events, 0);
1829 anfd->events = 0;
1830 anfd->handle = handle;
1831 }
1832 }
1833 }
1834#endif
1835
944 for (i = 0; i < fdchangecnt; ++i) 1836 for (i = 0; i < fdchangecnt; ++i)
945 { 1837 {
946 int fd = fdchanges [i]; 1838 int fd = fdchanges [i];
947 ANFD *anfd = anfds + fd; 1839 ANFD *anfd = anfds + fd;
948 ev_io *w; 1840 ev_io *w;
949 1841
950 unsigned char events = 0; 1842 unsigned char o_events = anfd->events;
1843 unsigned char o_reify = anfd->reify;
951 1844
952 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1845 anfd->reify = 0;
953 events |= (unsigned char)w->events;
954 1846
955#if EV_SELECT_IS_WINSOCKET 1847 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
956 if (events)
957 { 1848 {
958 unsigned long arg; 1849 anfd->events = 0;
959 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1850
960 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1851 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1852 anfd->events |= (unsigned char)w->events;
1853
1854 if (o_events != anfd->events)
1855 o_reify = EV__IOFDSET; /* actually |= */
961 } 1856 }
962#endif
963 1857
964 { 1858 if (o_reify & EV__IOFDSET)
965 unsigned char o_events = anfd->events;
966 unsigned char o_reify = anfd->reify;
967
968 anfd->reify = 0;
969 anfd->events = events;
970
971 if (o_events != events || o_reify & EV__IOFDSET)
972 backend_modify (EV_A_ fd, o_events, events); 1859 backend_modify (EV_A_ fd, o_events, anfd->events);
973 }
974 } 1860 }
975 1861
976 fdchangecnt = 0; 1862 fdchangecnt = 0;
977} 1863}
978 1864
… …
990 fdchanges [fdchangecnt - 1] = fd; 1876 fdchanges [fdchangecnt - 1] = fd;
991 } 1877 }
992} 1878}
993 1879
994/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1880/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
995inline_speed void 1881inline_speed void ecb_cold
996fd_kill (EV_P_ int fd) 1882fd_kill (EV_P_ int fd)
997{ 1883{
998 ev_io *w; 1884 ev_io *w;
999 1885
1000 while ((w = (ev_io *)anfds [fd].head)) 1886 while ((w = (ev_io *)anfds [fd].head))
… …
1003 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1889 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1004 } 1890 }
1005} 1891}
1006 1892
1007/* check whether the given fd is actually valid, for error recovery */ 1893/* check whether the given fd is actually valid, for error recovery */
1008inline_size int 1894inline_size int ecb_cold
1009fd_valid (int fd) 1895fd_valid (int fd)
1010{ 1896{
1011#ifdef _WIN32 1897#ifdef _WIN32
1012 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 1898 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1013#else 1899#else
1014 return fcntl (fd, F_GETFD) != -1; 1900 return fcntl (fd, F_GETFD) != -1;
1015#endif 1901#endif
1016} 1902}
1017 1903
1018/* called on EBADF to verify fds */ 1904/* called on EBADF to verify fds */
1019static void noinline 1905static void noinline ecb_cold
1020fd_ebadf (EV_P) 1906fd_ebadf (EV_P)
1021{ 1907{
1022 int fd; 1908 int fd;
1023 1909
1024 for (fd = 0; fd < anfdmax; ++fd) 1910 for (fd = 0; fd < anfdmax; ++fd)
… …
1026 if (!fd_valid (fd) && errno == EBADF) 1912 if (!fd_valid (fd) && errno == EBADF)
1027 fd_kill (EV_A_ fd); 1913 fd_kill (EV_A_ fd);
1028} 1914}
1029 1915
1030/* called on ENOMEM in select/poll to kill some fds and retry */ 1916/* called on ENOMEM in select/poll to kill some fds and retry */
1031static void noinline 1917static void noinline ecb_cold
1032fd_enomem (EV_P) 1918fd_enomem (EV_P)
1033{ 1919{
1034 int fd; 1920 int fd;
1035 1921
1036 for (fd = anfdmax; fd--; ) 1922 for (fd = anfdmax; fd--; )
… …
1231 2117
1232/*****************************************************************************/ 2118/*****************************************************************************/
1233 2119
1234#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2120#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1235 2121
1236static void noinline 2122static void noinline ecb_cold
1237evpipe_init (EV_P) 2123evpipe_init (EV_P)
1238{ 2124{
1239 if (!ev_is_active (&pipe_w)) 2125 if (!ev_is_active (&pipe_w))
1240 { 2126 {
2127 int fds [2];
2128
1241# if EV_USE_EVENTFD 2129# if EV_USE_EVENTFD
2130 fds [0] = -1;
1242 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2131 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1243 if (evfd < 0 && errno == EINVAL) 2132 if (fds [1] < 0 && errno == EINVAL)
1244 evfd = eventfd (0, 0); 2133 fds [1] = eventfd (0, 0);
1245 2134
1246 if (evfd >= 0) 2135 if (fds [1] < 0)
2136# endif
1247 { 2137 {
2138 while (pipe (fds))
2139 ev_syserr ("(libev) error creating signal/async pipe");
2140
2141 fd_intern (fds [0]);
2142 }
2143
1248 evpipe [0] = -1; 2144 evpipe [0] = fds [0];
1249 fd_intern (evfd); /* doing it twice doesn't hurt */ 2145
1250 ev_io_set (&pipe_w, evfd, EV_READ); 2146 if (evpipe [1] < 0)
2147 evpipe [1] = fds [1]; /* first call, set write fd */
2148 else
2149 {
2150 /* on subsequent calls, do not change evpipe [1] */
2151 /* so that evpipe_write can always rely on its value. */
2152 /* this branch does not do anything sensible on windows, */
2153 /* so must not be executed on windows */
2154
2155 dup2 (fds [1], evpipe [1]);
2156 close (fds [1]);
2157 }
2158
2159 fd_intern (evpipe [1]);
2160
2161 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2162 ev_io_start (EV_A_ &pipe_w);
2163 ev_unref (EV_A); /* watcher should not keep loop alive */
2164 }
2165}
2166
2167inline_speed void
2168evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2169{
2170 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2171
2172 if (expect_true (*flag))
2173 return;
2174
2175 *flag = 1;
2176 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2177
2178 pipe_write_skipped = 1;
2179
2180 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2181
2182 if (pipe_write_wanted)
2183 {
2184 int old_errno;
2185
2186 pipe_write_skipped = 0;
2187 ECB_MEMORY_FENCE_RELEASE;
2188
2189 old_errno = errno; /* save errno because write will clobber it */
2190
2191#if EV_USE_EVENTFD
2192 if (evpipe [0] < 0)
2193 {
2194 uint64_t counter = 1;
2195 write (evpipe [1], &counter, sizeof (uint64_t));
1251 } 2196 }
1252 else 2197 else
1253# endif 2198#endif
1254 { 2199 {
1255 while (pipe (evpipe)) 2200#ifdef _WIN32
1256 ev_syserr ("(libev) error creating signal/async pipe"); 2201 WSABUF buf;
1257 2202 DWORD sent;
1258 fd_intern (evpipe [0]); 2203 buf.buf = &buf;
1259 fd_intern (evpipe [1]); 2204 buf.len = 1;
1260 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2205 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2206#else
2207 write (evpipe [1], &(evpipe [1]), 1);
2208#endif
1261 } 2209 }
1262
1263 ev_io_start (EV_A_ &pipe_w);
1264 ev_unref (EV_A); /* watcher should not keep loop alive */
1265 }
1266}
1267
1268inline_size void
1269evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1270{
1271 if (!*flag)
1272 {
1273 int old_errno = errno; /* save errno because write might clobber it */
1274 char dummy;
1275
1276 *flag = 1;
1277
1278#if EV_USE_EVENTFD
1279 if (evfd >= 0)
1280 {
1281 uint64_t counter = 1;
1282 write (evfd, &counter, sizeof (uint64_t));
1283 }
1284 else
1285#endif
1286 /* win32 people keep sending patches that change this write() to send() */
1287 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1288 /* so when you think this write should be a send instead, please find out */
1289 /* where your send() is from - it's definitely not the microsoft send, and */
1290 /* tell me. thank you. */
1291 write (evpipe [1], &dummy, 1);
1292 2210
1293 errno = old_errno; 2211 errno = old_errno;
1294 } 2212 }
1295} 2213}
1296 2214
… …
1299static void 2217static void
1300pipecb (EV_P_ ev_io *iow, int revents) 2218pipecb (EV_P_ ev_io *iow, int revents)
1301{ 2219{
1302 int i; 2220 int i;
1303 2221
2222 if (revents & EV_READ)
2223 {
1304#if EV_USE_EVENTFD 2224#if EV_USE_EVENTFD
1305 if (evfd >= 0) 2225 if (evpipe [0] < 0)
1306 { 2226 {
1307 uint64_t counter; 2227 uint64_t counter;
1308 read (evfd, &counter, sizeof (uint64_t)); 2228 read (evpipe [1], &counter, sizeof (uint64_t));
1309 } 2229 }
1310 else 2230 else
1311#endif 2231#endif
1312 { 2232 {
1313 char dummy; 2233 char dummy[4];
1314 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2234#ifdef _WIN32
2235 WSABUF buf;
2236 DWORD recvd;
2237 DWORD flags = 0;
2238 buf.buf = dummy;
2239 buf.len = sizeof (dummy);
2240 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2241#else
1315 read (evpipe [0], &dummy, 1); 2242 read (evpipe [0], &dummy, sizeof (dummy));
2243#endif
2244 }
1316 } 2245 }
1317 2246
2247 pipe_write_skipped = 0;
2248
2249 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2250
2251#if EV_SIGNAL_ENABLE
1318 if (sig_pending) 2252 if (sig_pending)
1319 { 2253 {
1320 sig_pending = 0; 2254 sig_pending = 0;
2255
2256 ECB_MEMORY_FENCE;
1321 2257
1322 for (i = EV_NSIG - 1; i--; ) 2258 for (i = EV_NSIG - 1; i--; )
1323 if (expect_false (signals [i].pending)) 2259 if (expect_false (signals [i].pending))
1324 ev_feed_signal_event (EV_A_ i + 1); 2260 ev_feed_signal_event (EV_A_ i + 1);
1325 } 2261 }
2262#endif
1326 2263
1327#if EV_ASYNC_ENABLE 2264#if EV_ASYNC_ENABLE
1328 if (async_pending) 2265 if (async_pending)
1329 { 2266 {
1330 async_pending = 0; 2267 async_pending = 0;
2268
2269 ECB_MEMORY_FENCE;
1331 2270
1332 for (i = asynccnt; i--; ) 2271 for (i = asynccnt; i--; )
1333 if (asyncs [i]->sent) 2272 if (asyncs [i]->sent)
1334 { 2273 {
1335 asyncs [i]->sent = 0; 2274 asyncs [i]->sent = 0;
2275 ECB_MEMORY_FENCE_RELEASE;
1336 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2276 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1337 } 2277 }
1338 } 2278 }
1339#endif 2279#endif
1340} 2280}
1341 2281
1342/*****************************************************************************/ 2282/*****************************************************************************/
1343 2283
2284void
2285ev_feed_signal (int signum) EV_THROW
2286{
2287#if EV_MULTIPLICITY
2288 EV_P;
2289 ECB_MEMORY_FENCE_ACQUIRE;
2290 EV_A = signals [signum - 1].loop;
2291
2292 if (!EV_A)
2293 return;
2294#endif
2295
2296 signals [signum - 1].pending = 1;
2297 evpipe_write (EV_A_ &sig_pending);
2298}
2299
1344static void 2300static void
1345ev_sighandler (int signum) 2301ev_sighandler (int signum)
1346{ 2302{
1347#if EV_MULTIPLICITY
1348 EV_P = signals [signum - 1].loop;
1349#endif
1350
1351#ifdef _WIN32 2303#ifdef _WIN32
1352 signal (signum, ev_sighandler); 2304 signal (signum, ev_sighandler);
1353#endif 2305#endif
1354 2306
1355 signals [signum - 1].pending = 1; 2307 ev_feed_signal (signum);
1356 evpipe_write (EV_A_ &sig_pending);
1357} 2308}
1358 2309
1359void noinline 2310void noinline
1360ev_feed_signal_event (EV_P_ int signum) 2311ev_feed_signal_event (EV_P_ int signum) EV_THROW
1361{ 2312{
1362 WL w; 2313 WL w;
1363 2314
1364 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2315 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1365 return; 2316 return;
1366 2317
1367 --signum; 2318 --signum;
1368 2319
1369#if EV_MULTIPLICITY 2320#if EV_MULTIPLICITY
… …
1373 if (expect_false (signals [signum].loop != EV_A)) 2324 if (expect_false (signals [signum].loop != EV_A))
1374 return; 2325 return;
1375#endif 2326#endif
1376 2327
1377 signals [signum].pending = 0; 2328 signals [signum].pending = 0;
2329 ECB_MEMORY_FENCE_RELEASE;
1378 2330
1379 for (w = signals [signum].head; w; w = w->next) 2331 for (w = signals [signum].head; w; w = w->next)
1380 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2332 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1381} 2333}
1382 2334
… …
1461 2413
1462#endif 2414#endif
1463 2415
1464/*****************************************************************************/ 2416/*****************************************************************************/
1465 2417
2418#if EV_USE_IOCP
2419# include "ev_iocp.c"
2420#endif
1466#if EV_USE_PORT 2421#if EV_USE_PORT
1467# include "ev_port.c" 2422# include "ev_port.c"
1468#endif 2423#endif
1469#if EV_USE_KQUEUE 2424#if EV_USE_KQUEUE
1470# include "ev_kqueue.c" 2425# include "ev_kqueue.c"
… …
1477#endif 2432#endif
1478#if EV_USE_SELECT 2433#if EV_USE_SELECT
1479# include "ev_select.c" 2434# include "ev_select.c"
1480#endif 2435#endif
1481 2436
1482int 2437int ecb_cold
1483ev_version_major (void) 2438ev_version_major (void) EV_THROW
1484{ 2439{
1485 return EV_VERSION_MAJOR; 2440 return EV_VERSION_MAJOR;
1486} 2441}
1487 2442
1488int 2443int ecb_cold
1489ev_version_minor (void) 2444ev_version_minor (void) EV_THROW
1490{ 2445{
1491 return EV_VERSION_MINOR; 2446 return EV_VERSION_MINOR;
1492} 2447}
1493 2448
1494/* return true if we are running with elevated privileges and should ignore env variables */ 2449/* return true if we are running with elevated privileges and should ignore env variables */
1495int inline_size 2450int inline_size ecb_cold
1496enable_secure (void) 2451enable_secure (void)
1497{ 2452{
1498#ifdef _WIN32 2453#ifdef _WIN32
1499 return 0; 2454 return 0;
1500#else 2455#else
1501 return getuid () != geteuid () 2456 return getuid () != geteuid ()
1502 || getgid () != getegid (); 2457 || getgid () != getegid ();
1503#endif 2458#endif
1504} 2459}
1505 2460
1506unsigned int 2461unsigned int ecb_cold
1507ev_supported_backends (void) 2462ev_supported_backends (void) EV_THROW
1508{ 2463{
1509 unsigned int flags = 0; 2464 unsigned int flags = 0;
1510 2465
1511 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2466 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1512 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2467 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1515 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2470 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1516 2471
1517 return flags; 2472 return flags;
1518} 2473}
1519 2474
1520unsigned int 2475unsigned int ecb_cold
1521ev_recommended_backends (void) 2476ev_recommended_backends (void) EV_THROW
1522{ 2477{
1523 unsigned int flags = ev_supported_backends (); 2478 unsigned int flags = ev_supported_backends ();
1524 2479
1525#ifndef __NetBSD__ 2480#ifndef __NetBSD__
1526 /* kqueue is borked on everything but netbsd apparently */ 2481 /* kqueue is borked on everything but netbsd apparently */
… …
1537#endif 2492#endif
1538 2493
1539 return flags; 2494 return flags;
1540} 2495}
1541 2496
2497unsigned int ecb_cold
2498ev_embeddable_backends (void) EV_THROW
2499{
2500 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2501
2502 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2503 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2504 flags &= ~EVBACKEND_EPOLL;
2505
2506 return flags;
2507}
2508
1542unsigned int 2509unsigned int
1543ev_embeddable_backends (void)
1544{
1545 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1546
1547 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1548 /* please fix it and tell me how to detect the fix */
1549 flags &= ~EVBACKEND_EPOLL;
1550
1551 return flags;
1552}
1553
1554unsigned int
1555ev_backend (EV_P) 2510ev_backend (EV_P) EV_THROW
1556{ 2511{
1557 return backend; 2512 return backend;
1558} 2513}
1559 2514
1560#if EV_FEATURE_API 2515#if EV_FEATURE_API
1561unsigned int 2516unsigned int
1562ev_iteration (EV_P) 2517ev_iteration (EV_P) EV_THROW
1563{ 2518{
1564 return loop_count; 2519 return loop_count;
1565} 2520}
1566 2521
1567unsigned int 2522unsigned int
1568ev_depth (EV_P) 2523ev_depth (EV_P) EV_THROW
1569{ 2524{
1570 return loop_depth; 2525 return loop_depth;
1571} 2526}
1572 2527
1573void 2528void
1574ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2529ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1575{ 2530{
1576 io_blocktime = interval; 2531 io_blocktime = interval;
1577} 2532}
1578 2533
1579void 2534void
1580ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2535ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1581{ 2536{
1582 timeout_blocktime = interval; 2537 timeout_blocktime = interval;
1583} 2538}
1584 2539
1585void 2540void
1586ev_set_userdata (EV_P_ void *data) 2541ev_set_userdata (EV_P_ void *data) EV_THROW
1587{ 2542{
1588 userdata = data; 2543 userdata = data;
1589} 2544}
1590 2545
1591void * 2546void *
1592ev_userdata (EV_P) 2547ev_userdata (EV_P) EV_THROW
1593{ 2548{
1594 return userdata; 2549 return userdata;
1595} 2550}
1596 2551
2552void
1597void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2553ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
1598{ 2554{
1599 invoke_cb = invoke_pending_cb; 2555 invoke_cb = invoke_pending_cb;
1600} 2556}
1601 2557
2558void
1602void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2559ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
1603{ 2560{
1604 release_cb = release; 2561 release_cb = release;
1605 acquire_cb = acquire; 2562 acquire_cb = acquire;
1606} 2563}
1607#endif 2564#endif
1608 2565
1609/* initialise a loop structure, must be zero-initialised */ 2566/* initialise a loop structure, must be zero-initialised */
1610static void noinline 2567static void noinline ecb_cold
1611loop_init (EV_P_ unsigned int flags) 2568loop_init (EV_P_ unsigned int flags) EV_THROW
1612{ 2569{
1613 if (!backend) 2570 if (!backend)
1614 { 2571 {
2572 origflags = flags;
2573
1615#if EV_USE_REALTIME 2574#if EV_USE_REALTIME
1616 if (!have_realtime) 2575 if (!have_realtime)
1617 { 2576 {
1618 struct timespec ts; 2577 struct timespec ts;
1619 2578
… …
1641 if (!(flags & EVFLAG_NOENV) 2600 if (!(flags & EVFLAG_NOENV)
1642 && !enable_secure () 2601 && !enable_secure ()
1643 && getenv ("LIBEV_FLAGS")) 2602 && getenv ("LIBEV_FLAGS"))
1644 flags = atoi (getenv ("LIBEV_FLAGS")); 2603 flags = atoi (getenv ("LIBEV_FLAGS"));
1645 2604
1646 ev_rt_now = ev_time (); 2605 ev_rt_now = ev_time ();
1647 mn_now = get_clock (); 2606 mn_now = get_clock ();
1648 now_floor = mn_now; 2607 now_floor = mn_now;
1649 rtmn_diff = ev_rt_now - mn_now; 2608 rtmn_diff = ev_rt_now - mn_now;
1650#if EV_FEATURE_API 2609#if EV_FEATURE_API
1651 invoke_cb = ev_invoke_pending; 2610 invoke_cb = ev_invoke_pending;
1652#endif 2611#endif
1653 2612
1654 io_blocktime = 0.; 2613 io_blocktime = 0.;
1655 timeout_blocktime = 0.; 2614 timeout_blocktime = 0.;
1656 backend = 0; 2615 backend = 0;
1657 backend_fd = -1; 2616 backend_fd = -1;
1658 sig_pending = 0; 2617 sig_pending = 0;
1659#if EV_ASYNC_ENABLE 2618#if EV_ASYNC_ENABLE
1660 async_pending = 0; 2619 async_pending = 0;
1661#endif 2620#endif
2621 pipe_write_skipped = 0;
2622 pipe_write_wanted = 0;
2623 evpipe [0] = -1;
2624 evpipe [1] = -1;
1662#if EV_USE_INOTIFY 2625#if EV_USE_INOTIFY
1663 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2626 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1664#endif 2627#endif
1665#if EV_USE_SIGNALFD 2628#if EV_USE_SIGNALFD
1666 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2629 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1667#endif 2630#endif
1668 2631
1669 if (!(flags & 0x0000ffffU)) 2632 if (!(flags & EVBACKEND_MASK))
1670 flags |= ev_recommended_backends (); 2633 flags |= ev_recommended_backends ();
1671 2634
2635#if EV_USE_IOCP
2636 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2637#endif
1672#if EV_USE_PORT 2638#if EV_USE_PORT
1673 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2639 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1674#endif 2640#endif
1675#if EV_USE_KQUEUE 2641#if EV_USE_KQUEUE
1676 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2642 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1693#endif 2659#endif
1694 } 2660 }
1695} 2661}
1696 2662
1697/* free up a loop structure */ 2663/* free up a loop structure */
1698static void noinline 2664void ecb_cold
1699loop_destroy (EV_P) 2665ev_loop_destroy (EV_P)
1700{ 2666{
1701 int i; 2667 int i;
2668
2669#if EV_MULTIPLICITY
2670 /* mimic free (0) */
2671 if (!EV_A)
2672 return;
2673#endif
2674
2675#if EV_CLEANUP_ENABLE
2676 /* queue cleanup watchers (and execute them) */
2677 if (expect_false (cleanupcnt))
2678 {
2679 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2680 EV_INVOKE_PENDING;
2681 }
2682#endif
2683
2684#if EV_CHILD_ENABLE
2685 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2686 {
2687 ev_ref (EV_A); /* child watcher */
2688 ev_signal_stop (EV_A_ &childev);
2689 }
2690#endif
1702 2691
1703 if (ev_is_active (&pipe_w)) 2692 if (ev_is_active (&pipe_w))
1704 { 2693 {
1705 /*ev_ref (EV_A);*/ 2694 /*ev_ref (EV_A);*/
1706 /*ev_io_stop (EV_A_ &pipe_w);*/ 2695 /*ev_io_stop (EV_A_ &pipe_w);*/
1707 2696
1708#if EV_USE_EVENTFD
1709 if (evfd >= 0)
1710 close (evfd);
1711#endif
1712
1713 if (evpipe [0] >= 0)
1714 {
1715 EV_WIN32_CLOSE_FD (evpipe [0]); 2697 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1716 EV_WIN32_CLOSE_FD (evpipe [1]); 2698 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1717 }
1718 } 2699 }
1719 2700
1720#if EV_USE_SIGNALFD 2701#if EV_USE_SIGNALFD
1721 if (ev_is_active (&sigfd_w)) 2702 if (ev_is_active (&sigfd_w))
1722 close (sigfd); 2703 close (sigfd);
… …
1728#endif 2709#endif
1729 2710
1730 if (backend_fd >= 0) 2711 if (backend_fd >= 0)
1731 close (backend_fd); 2712 close (backend_fd);
1732 2713
2714#if EV_USE_IOCP
2715 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2716#endif
1733#if EV_USE_PORT 2717#if EV_USE_PORT
1734 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2718 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1735#endif 2719#endif
1736#if EV_USE_KQUEUE 2720#if EV_USE_KQUEUE
1737 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2721 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1764 array_free (periodic, EMPTY); 2748 array_free (periodic, EMPTY);
1765#endif 2749#endif
1766#if EV_FORK_ENABLE 2750#if EV_FORK_ENABLE
1767 array_free (fork, EMPTY); 2751 array_free (fork, EMPTY);
1768#endif 2752#endif
2753#if EV_CLEANUP_ENABLE
2754 array_free (cleanup, EMPTY);
2755#endif
1769 array_free (prepare, EMPTY); 2756 array_free (prepare, EMPTY);
1770 array_free (check, EMPTY); 2757 array_free (check, EMPTY);
1771#if EV_ASYNC_ENABLE 2758#if EV_ASYNC_ENABLE
1772 array_free (async, EMPTY); 2759 array_free (async, EMPTY);
1773#endif 2760#endif
1774 2761
1775 backend = 0; 2762 backend = 0;
2763
2764#if EV_MULTIPLICITY
2765 if (ev_is_default_loop (EV_A))
2766#endif
2767 ev_default_loop_ptr = 0;
2768#if EV_MULTIPLICITY
2769 else
2770 ev_free (EV_A);
2771#endif
1776} 2772}
1777 2773
1778#if EV_USE_INOTIFY 2774#if EV_USE_INOTIFY
1779inline_size void infy_fork (EV_P); 2775inline_size void infy_fork (EV_P);
1780#endif 2776#endif
… …
1793#endif 2789#endif
1794#if EV_USE_INOTIFY 2790#if EV_USE_INOTIFY
1795 infy_fork (EV_A); 2791 infy_fork (EV_A);
1796#endif 2792#endif
1797 2793
2794#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1798 if (ev_is_active (&pipe_w)) 2795 if (ev_is_active (&pipe_w))
1799 { 2796 {
1800 /* this "locks" the handlers against writing to the pipe */ 2797 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1801 /* while we modify the fd vars */
1802 sig_pending = 1;
1803#if EV_ASYNC_ENABLE
1804 async_pending = 1;
1805#endif
1806 2798
1807 ev_ref (EV_A); 2799 ev_ref (EV_A);
1808 ev_io_stop (EV_A_ &pipe_w); 2800 ev_io_stop (EV_A_ &pipe_w);
1809 2801
1810#if EV_USE_EVENTFD
1811 if (evfd >= 0)
1812 close (evfd);
1813#endif
1814
1815 if (evpipe [0] >= 0) 2802 if (evpipe [0] >= 0)
1816 {
1817 EV_WIN32_CLOSE_FD (evpipe [0]); 2803 EV_WIN32_CLOSE_FD (evpipe [0]);
1818 EV_WIN32_CLOSE_FD (evpipe [1]);
1819 }
1820 2804
1821#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1822 evpipe_init (EV_A); 2805 evpipe_init (EV_A);
1823 /* now iterate over everything, in case we missed something */ 2806 /* iterate over everything, in case we missed something before */
1824 pipecb (EV_A_ &pipe_w, EV_READ); 2807 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1825#endif
1826 } 2808 }
2809#endif
1827 2810
1828 postfork = 0; 2811 postfork = 0;
1829} 2812}
1830 2813
1831#if EV_MULTIPLICITY 2814#if EV_MULTIPLICITY
1832 2815
1833struct ev_loop * 2816struct ev_loop * ecb_cold
1834ev_loop_new (unsigned int flags) 2817ev_loop_new (unsigned int flags) EV_THROW
1835{ 2818{
1836 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2819 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1837 2820
1838 memset (EV_A, 0, sizeof (struct ev_loop)); 2821 memset (EV_A, 0, sizeof (struct ev_loop));
1839 loop_init (EV_A_ flags); 2822 loop_init (EV_A_ flags);
1840 2823
1841 if (ev_backend (EV_A)) 2824 if (ev_backend (EV_A))
1842 return EV_A; 2825 return EV_A;
1843 2826
2827 ev_free (EV_A);
1844 return 0; 2828 return 0;
1845} 2829}
1846 2830
1847void
1848ev_loop_destroy (EV_P)
1849{
1850 loop_destroy (EV_A);
1851 ev_free (loop);
1852}
1853
1854void
1855ev_loop_fork (EV_P)
1856{
1857 postfork = 1; /* must be in line with ev_default_fork */
1858}
1859#endif /* multiplicity */ 2831#endif /* multiplicity */
1860 2832
1861#if EV_VERIFY 2833#if EV_VERIFY
1862static void noinline 2834static void noinline ecb_cold
1863verify_watcher (EV_P_ W w) 2835verify_watcher (EV_P_ W w)
1864{ 2836{
1865 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2837 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1866 2838
1867 if (w->pending) 2839 if (w->pending)
1868 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2840 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1869} 2841}
1870 2842
1871static void noinline 2843static void noinline ecb_cold
1872verify_heap (EV_P_ ANHE *heap, int N) 2844verify_heap (EV_P_ ANHE *heap, int N)
1873{ 2845{
1874 int i; 2846 int i;
1875 2847
1876 for (i = HEAP0; i < N + HEAP0; ++i) 2848 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1881 2853
1882 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2854 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1883 } 2855 }
1884} 2856}
1885 2857
1886static void noinline 2858static void noinline ecb_cold
1887array_verify (EV_P_ W *ws, int cnt) 2859array_verify (EV_P_ W *ws, int cnt)
1888{ 2860{
1889 while (cnt--) 2861 while (cnt--)
1890 { 2862 {
1891 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2863 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
1893 } 2865 }
1894} 2866}
1895#endif 2867#endif
1896 2868
1897#if EV_FEATURE_API 2869#if EV_FEATURE_API
1898void 2870void ecb_cold
1899ev_verify (EV_P) 2871ev_verify (EV_P) EV_THROW
1900{ 2872{
1901#if EV_VERIFY 2873#if EV_VERIFY
1902 int i; 2874 int i;
1903 WL w; 2875 WL w, w2;
1904 2876
1905 assert (activecnt >= -1); 2877 assert (activecnt >= -1);
1906 2878
1907 assert (fdchangemax >= fdchangecnt); 2879 assert (fdchangemax >= fdchangecnt);
1908 for (i = 0; i < fdchangecnt; ++i) 2880 for (i = 0; i < fdchangecnt; ++i)
1909 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2881 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1910 2882
1911 assert (anfdmax >= 0); 2883 assert (anfdmax >= 0);
1912 for (i = 0; i < anfdmax; ++i) 2884 for (i = 0; i < anfdmax; ++i)
2885 {
2886 int j = 0;
2887
1913 for (w = anfds [i].head; w; w = w->next) 2888 for (w = w2 = anfds [i].head; w; w = w->next)
1914 { 2889 {
1915 verify_watcher (EV_A_ (W)w); 2890 verify_watcher (EV_A_ (W)w);
2891
2892 if (j++ & 1)
2893 {
2894 assert (("libev: io watcher list contains a loop", w != w2));
2895 w2 = w2->next;
2896 }
2897
1916 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2898 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1917 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2899 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1918 } 2900 }
2901 }
1919 2902
1920 assert (timermax >= timercnt); 2903 assert (timermax >= timercnt);
1921 verify_heap (EV_A_ timers, timercnt); 2904 verify_heap (EV_A_ timers, timercnt);
1922 2905
1923#if EV_PERIODIC_ENABLE 2906#if EV_PERIODIC_ENABLE
… …
1938#if EV_FORK_ENABLE 2921#if EV_FORK_ENABLE
1939 assert (forkmax >= forkcnt); 2922 assert (forkmax >= forkcnt);
1940 array_verify (EV_A_ (W *)forks, forkcnt); 2923 array_verify (EV_A_ (W *)forks, forkcnt);
1941#endif 2924#endif
1942 2925
2926#if EV_CLEANUP_ENABLE
2927 assert (cleanupmax >= cleanupcnt);
2928 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2929#endif
2930
1943#if EV_ASYNC_ENABLE 2931#if EV_ASYNC_ENABLE
1944 assert (asyncmax >= asynccnt); 2932 assert (asyncmax >= asynccnt);
1945 array_verify (EV_A_ (W *)asyncs, asynccnt); 2933 array_verify (EV_A_ (W *)asyncs, asynccnt);
1946#endif 2934#endif
1947 2935
… …
1964#endif 2952#endif
1965} 2953}
1966#endif 2954#endif
1967 2955
1968#if EV_MULTIPLICITY 2956#if EV_MULTIPLICITY
1969struct ev_loop * 2957struct ev_loop * ecb_cold
1970ev_default_loop_init (unsigned int flags)
1971#else 2958#else
1972int 2959int
2960#endif
1973ev_default_loop (unsigned int flags) 2961ev_default_loop (unsigned int flags) EV_THROW
1974#endif
1975{ 2962{
1976 if (!ev_default_loop_ptr) 2963 if (!ev_default_loop_ptr)
1977 { 2964 {
1978#if EV_MULTIPLICITY 2965#if EV_MULTIPLICITY
1979 EV_P = ev_default_loop_ptr = &default_loop_struct; 2966 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1998 2985
1999 return ev_default_loop_ptr; 2986 return ev_default_loop_ptr;
2000} 2987}
2001 2988
2002void 2989void
2003ev_default_destroy (void) 2990ev_loop_fork (EV_P) EV_THROW
2004{ 2991{
2005#if EV_MULTIPLICITY 2992 postfork = 1;
2006 EV_P = ev_default_loop_ptr;
2007#endif
2008
2009 ev_default_loop_ptr = 0;
2010
2011#if EV_CHILD_ENABLE
2012 ev_ref (EV_A); /* child watcher */
2013 ev_signal_stop (EV_A_ &childev);
2014#endif
2015
2016 loop_destroy (EV_A);
2017}
2018
2019void
2020ev_default_fork (void)
2021{
2022#if EV_MULTIPLICITY
2023 EV_P = ev_default_loop_ptr;
2024#endif
2025
2026 postfork = 1; /* must be in line with ev_loop_fork */
2027} 2993}
2028 2994
2029/*****************************************************************************/ 2995/*****************************************************************************/
2030 2996
2031void 2997void
… …
2033{ 2999{
2034 EV_CB_INVOKE ((W)w, revents); 3000 EV_CB_INVOKE ((W)w, revents);
2035} 3001}
2036 3002
2037unsigned int 3003unsigned int
2038ev_pending_count (EV_P) 3004ev_pending_count (EV_P) EV_THROW
2039{ 3005{
2040 int pri; 3006 int pri;
2041 unsigned int count = 0; 3007 unsigned int count = 0;
2042 3008
2043 for (pri = NUMPRI; pri--; ) 3009 for (pri = NUMPRI; pri--; )
… …
2047} 3013}
2048 3014
2049void noinline 3015void noinline
2050ev_invoke_pending (EV_P) 3016ev_invoke_pending (EV_P)
2051{ 3017{
2052 int pri; 3018 pendingpri = NUMPRI;
2053 3019
2054 for (pri = NUMPRI; pri--; ) 3020 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
3021 {
3022 --pendingpri;
3023
2055 while (pendingcnt [pri]) 3024 while (pendingcnt [pendingpri])
2056 { 3025 {
2057 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3026 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2058 3027
2059 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2060 /* ^ this is no longer true, as pending_w could be here */
2061
2062 p->w->pending = 0; 3028 p->w->pending = 0;
2063 EV_CB_INVOKE (p->w, p->events); 3029 EV_CB_INVOKE (p->w, p->events);
2064 EV_FREQUENT_CHECK; 3030 EV_FREQUENT_CHECK;
2065 } 3031 }
3032 }
2066} 3033}
2067 3034
2068#if EV_IDLE_ENABLE 3035#if EV_IDLE_ENABLE
2069/* make idle watchers pending. this handles the "call-idle */ 3036/* make idle watchers pending. this handles the "call-idle */
2070/* only when higher priorities are idle" logic */ 3037/* only when higher priorities are idle" logic */
… …
2127 feed_reverse_done (EV_A_ EV_TIMER); 3094 feed_reverse_done (EV_A_ EV_TIMER);
2128 } 3095 }
2129} 3096}
2130 3097
2131#if EV_PERIODIC_ENABLE 3098#if EV_PERIODIC_ENABLE
3099
3100static void noinline
3101periodic_recalc (EV_P_ ev_periodic *w)
3102{
3103 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3104 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3105
3106 /* the above almost always errs on the low side */
3107 while (at <= ev_rt_now)
3108 {
3109 ev_tstamp nat = at + w->interval;
3110
3111 /* when resolution fails us, we use ev_rt_now */
3112 if (expect_false (nat == at))
3113 {
3114 at = ev_rt_now;
3115 break;
3116 }
3117
3118 at = nat;
3119 }
3120
3121 ev_at (w) = at;
3122}
3123
2132/* make periodics pending */ 3124/* make periodics pending */
2133inline_size void 3125inline_size void
2134periodics_reify (EV_P) 3126periodics_reify (EV_P)
2135{ 3127{
2136 EV_FREQUENT_CHECK; 3128 EV_FREQUENT_CHECK;
2137 3129
2138 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3130 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2139 { 3131 {
2140 int feed_count = 0;
2141
2142 do 3132 do
2143 { 3133 {
2144 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3134 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2145 3135
2146 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3136 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2155 ANHE_at_cache (periodics [HEAP0]); 3145 ANHE_at_cache (periodics [HEAP0]);
2156 downheap (periodics, periodiccnt, HEAP0); 3146 downheap (periodics, periodiccnt, HEAP0);
2157 } 3147 }
2158 else if (w->interval) 3148 else if (w->interval)
2159 { 3149 {
2160 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3150 periodic_recalc (EV_A_ w);
2161 /* if next trigger time is not sufficiently in the future, put it there */
2162 /* this might happen because of floating point inexactness */
2163 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2164 {
2165 ev_at (w) += w->interval;
2166
2167 /* if interval is unreasonably low we might still have a time in the past */
2168 /* so correct this. this will make the periodic very inexact, but the user */
2169 /* has effectively asked to get triggered more often than possible */
2170 if (ev_at (w) < ev_rt_now)
2171 ev_at (w) = ev_rt_now;
2172 }
2173
2174 ANHE_at_cache (periodics [HEAP0]); 3151 ANHE_at_cache (periodics [HEAP0]);
2175 downheap (periodics, periodiccnt, HEAP0); 3152 downheap (periodics, periodiccnt, HEAP0);
2176 } 3153 }
2177 else 3154 else
2178 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3155 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2186 } 3163 }
2187} 3164}
2188 3165
2189/* simply recalculate all periodics */ 3166/* simply recalculate all periodics */
2190/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3167/* TODO: maybe ensure that at least one event happens when jumping forward? */
2191static void noinline 3168static void noinline ecb_cold
2192periodics_reschedule (EV_P) 3169periodics_reschedule (EV_P)
2193{ 3170{
2194 int i; 3171 int i;
2195 3172
2196 /* adjust periodics after time jump */ 3173 /* adjust periodics after time jump */
… …
2199 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3176 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2200 3177
2201 if (w->reschedule_cb) 3178 if (w->reschedule_cb)
2202 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3179 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2203 else if (w->interval) 3180 else if (w->interval)
2204 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3181 periodic_recalc (EV_A_ w);
2205 3182
2206 ANHE_at_cache (periodics [i]); 3183 ANHE_at_cache (periodics [i]);
2207 } 3184 }
2208 3185
2209 reheap (periodics, periodiccnt); 3186 reheap (periodics, periodiccnt);
2210} 3187}
2211#endif 3188#endif
2212 3189
2213/* adjust all timers by a given offset */ 3190/* adjust all timers by a given offset */
2214static void noinline 3191static void noinline ecb_cold
2215timers_reschedule (EV_P_ ev_tstamp adjust) 3192timers_reschedule (EV_P_ ev_tstamp adjust)
2216{ 3193{
2217 int i; 3194 int i;
2218 3195
2219 for (i = 0; i < timercnt; ++i) 3196 for (i = 0; i < timercnt; ++i)
… …
2256 * doesn't hurt either as we only do this on time-jumps or 3233 * doesn't hurt either as we only do this on time-jumps or
2257 * in the unlikely event of having been preempted here. 3234 * in the unlikely event of having been preempted here.
2258 */ 3235 */
2259 for (i = 4; --i; ) 3236 for (i = 4; --i; )
2260 { 3237 {
3238 ev_tstamp diff;
2261 rtmn_diff = ev_rt_now - mn_now; 3239 rtmn_diff = ev_rt_now - mn_now;
2262 3240
3241 diff = odiff - rtmn_diff;
3242
2263 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3243 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2264 return; /* all is well */ 3244 return; /* all is well */
2265 3245
2266 ev_rt_now = ev_time (); 3246 ev_rt_now = ev_time ();
2267 mn_now = get_clock (); 3247 mn_now = get_clock ();
2268 now_floor = mn_now; 3248 now_floor = mn_now;
… …
2290 3270
2291 mn_now = ev_rt_now; 3271 mn_now = ev_rt_now;
2292 } 3272 }
2293} 3273}
2294 3274
2295void 3275int
2296ev_loop (EV_P_ int flags) 3276ev_run (EV_P_ int flags)
2297{ 3277{
2298#if EV_FEATURE_API 3278#if EV_FEATURE_API
2299 ++loop_depth; 3279 ++loop_depth;
2300#endif 3280#endif
2301 3281
2302 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 3282 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2303 3283
2304 loop_done = EVUNLOOP_CANCEL; 3284 loop_done = EVBREAK_CANCEL;
2305 3285
2306 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3286 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2307 3287
2308 do 3288 do
2309 { 3289 {
… …
2352 /* calculate blocking time */ 3332 /* calculate blocking time */
2353 { 3333 {
2354 ev_tstamp waittime = 0.; 3334 ev_tstamp waittime = 0.;
2355 ev_tstamp sleeptime = 0.; 3335 ev_tstamp sleeptime = 0.;
2356 3336
3337 /* remember old timestamp for io_blocktime calculation */
3338 ev_tstamp prev_mn_now = mn_now;
3339
3340 /* update time to cancel out callback processing overhead */
3341 time_update (EV_A_ 1e100);
3342
3343 /* from now on, we want a pipe-wake-up */
3344 pipe_write_wanted = 1;
3345
3346 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3347
2357 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3348 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2358 { 3349 {
2359 /* remember old timestamp for io_blocktime calculation */
2360 ev_tstamp prev_mn_now = mn_now;
2361
2362 /* update time to cancel out callback processing overhead */
2363 time_update (EV_A_ 1e100);
2364
2365 waittime = MAX_BLOCKTIME; 3350 waittime = MAX_BLOCKTIME;
2366 3351
2367 if (timercnt) 3352 if (timercnt)
2368 { 3353 {
2369 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3354 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2370 if (waittime > to) waittime = to; 3355 if (waittime > to) waittime = to;
2371 } 3356 }
2372 3357
2373#if EV_PERIODIC_ENABLE 3358#if EV_PERIODIC_ENABLE
2374 if (periodiccnt) 3359 if (periodiccnt)
2375 { 3360 {
2376 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3361 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2377 if (waittime > to) waittime = to; 3362 if (waittime > to) waittime = to;
2378 } 3363 }
2379#endif 3364#endif
2380 3365
2381 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3366 /* don't let timeouts decrease the waittime below timeout_blocktime */
2382 if (expect_false (waittime < timeout_blocktime)) 3367 if (expect_false (waittime < timeout_blocktime))
2383 waittime = timeout_blocktime; 3368 waittime = timeout_blocktime;
3369
3370 /* at this point, we NEED to wait, so we have to ensure */
3371 /* to pass a minimum nonzero value to the backend */
3372 if (expect_false (waittime < backend_mintime))
3373 waittime = backend_mintime;
2384 3374
2385 /* extra check because io_blocktime is commonly 0 */ 3375 /* extra check because io_blocktime is commonly 0 */
2386 if (expect_false (io_blocktime)) 3376 if (expect_false (io_blocktime))
2387 { 3377 {
2388 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3378 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2389 3379
2390 if (sleeptime > waittime - backend_fudge) 3380 if (sleeptime > waittime - backend_mintime)
2391 sleeptime = waittime - backend_fudge; 3381 sleeptime = waittime - backend_mintime;
2392 3382
2393 if (expect_true (sleeptime > 0.)) 3383 if (expect_true (sleeptime > 0.))
2394 { 3384 {
2395 ev_sleep (sleeptime); 3385 ev_sleep (sleeptime);
2396 waittime -= sleeptime; 3386 waittime -= sleeptime;
… …
2399 } 3389 }
2400 3390
2401#if EV_FEATURE_API 3391#if EV_FEATURE_API
2402 ++loop_count; 3392 ++loop_count;
2403#endif 3393#endif
2404 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3394 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2405 backend_poll (EV_A_ waittime); 3395 backend_poll (EV_A_ waittime);
2406 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3396 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3397
3398 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3399
3400 ECB_MEMORY_FENCE_ACQUIRE;
3401 if (pipe_write_skipped)
3402 {
3403 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3404 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3405 }
3406
2407 3407
2408 /* update ev_rt_now, do magic */ 3408 /* update ev_rt_now, do magic */
2409 time_update (EV_A_ waittime + sleeptime); 3409 time_update (EV_A_ waittime + sleeptime);
2410 } 3410 }
2411 3411
… …
2429 EV_INVOKE_PENDING; 3429 EV_INVOKE_PENDING;
2430 } 3430 }
2431 while (expect_true ( 3431 while (expect_true (
2432 activecnt 3432 activecnt
2433 && !loop_done 3433 && !loop_done
2434 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3434 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2435 )); 3435 ));
2436 3436
2437 if (loop_done == EVUNLOOP_ONE) 3437 if (loop_done == EVBREAK_ONE)
2438 loop_done = EVUNLOOP_CANCEL; 3438 loop_done = EVBREAK_CANCEL;
2439 3439
2440#if EV_FEATURE_API 3440#if EV_FEATURE_API
2441 --loop_depth; 3441 --loop_depth;
2442#endif 3442#endif
3443
3444 return activecnt;
2443} 3445}
2444 3446
2445void 3447void
2446ev_unloop (EV_P_ int how) 3448ev_break (EV_P_ int how) EV_THROW
2447{ 3449{
2448 loop_done = how; 3450 loop_done = how;
2449} 3451}
2450 3452
2451void 3453void
2452ev_ref (EV_P) 3454ev_ref (EV_P) EV_THROW
2453{ 3455{
2454 ++activecnt; 3456 ++activecnt;
2455} 3457}
2456 3458
2457void 3459void
2458ev_unref (EV_P) 3460ev_unref (EV_P) EV_THROW
2459{ 3461{
2460 --activecnt; 3462 --activecnt;
2461} 3463}
2462 3464
2463void 3465void
2464ev_now_update (EV_P) 3466ev_now_update (EV_P) EV_THROW
2465{ 3467{
2466 time_update (EV_A_ 1e100); 3468 time_update (EV_A_ 1e100);
2467} 3469}
2468 3470
2469void 3471void
2470ev_suspend (EV_P) 3472ev_suspend (EV_P) EV_THROW
2471{ 3473{
2472 ev_now_update (EV_A); 3474 ev_now_update (EV_A);
2473} 3475}
2474 3476
2475void 3477void
2476ev_resume (EV_P) 3478ev_resume (EV_P) EV_THROW
2477{ 3479{
2478 ev_tstamp mn_prev = mn_now; 3480 ev_tstamp mn_prev = mn_now;
2479 3481
2480 ev_now_update (EV_A); 3482 ev_now_update (EV_A);
2481 timers_reschedule (EV_A_ mn_now - mn_prev); 3483 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2520 w->pending = 0; 3522 w->pending = 0;
2521 } 3523 }
2522} 3524}
2523 3525
2524int 3526int
2525ev_clear_pending (EV_P_ void *w) 3527ev_clear_pending (EV_P_ void *w) EV_THROW
2526{ 3528{
2527 W w_ = (W)w; 3529 W w_ = (W)w;
2528 int pending = w_->pending; 3530 int pending = w_->pending;
2529 3531
2530 if (expect_true (pending)) 3532 if (expect_true (pending))
… …
2563} 3565}
2564 3566
2565/*****************************************************************************/ 3567/*****************************************************************************/
2566 3568
2567void noinline 3569void noinline
2568ev_io_start (EV_P_ ev_io *w) 3570ev_io_start (EV_P_ ev_io *w) EV_THROW
2569{ 3571{
2570 int fd = w->fd; 3572 int fd = w->fd;
2571 3573
2572 if (expect_false (ev_is_active (w))) 3574 if (expect_false (ev_is_active (w)))
2573 return; 3575 return;
… …
2579 3581
2580 ev_start (EV_A_ (W)w, 1); 3582 ev_start (EV_A_ (W)w, 1);
2581 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3583 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2582 wlist_add (&anfds[fd].head, (WL)w); 3584 wlist_add (&anfds[fd].head, (WL)w);
2583 3585
3586 /* common bug, apparently */
3587 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3588
2584 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3589 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2585 w->events &= ~EV__IOFDSET; 3590 w->events &= ~EV__IOFDSET;
2586 3591
2587 EV_FREQUENT_CHECK; 3592 EV_FREQUENT_CHECK;
2588} 3593}
2589 3594
2590void noinline 3595void noinline
2591ev_io_stop (EV_P_ ev_io *w) 3596ev_io_stop (EV_P_ ev_io *w) EV_THROW
2592{ 3597{
2593 clear_pending (EV_A_ (W)w); 3598 clear_pending (EV_A_ (W)w);
2594 if (expect_false (!ev_is_active (w))) 3599 if (expect_false (!ev_is_active (w)))
2595 return; 3600 return;
2596 3601
… …
2599 EV_FREQUENT_CHECK; 3604 EV_FREQUENT_CHECK;
2600 3605
2601 wlist_del (&anfds[w->fd].head, (WL)w); 3606 wlist_del (&anfds[w->fd].head, (WL)w);
2602 ev_stop (EV_A_ (W)w); 3607 ev_stop (EV_A_ (W)w);
2603 3608
2604 fd_change (EV_A_ w->fd, 1); 3609 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2605 3610
2606 EV_FREQUENT_CHECK; 3611 EV_FREQUENT_CHECK;
2607} 3612}
2608 3613
2609void noinline 3614void noinline
2610ev_timer_start (EV_P_ ev_timer *w) 3615ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2611{ 3616{
2612 if (expect_false (ev_is_active (w))) 3617 if (expect_false (ev_is_active (w)))
2613 return; 3618 return;
2614 3619
2615 ev_at (w) += mn_now; 3620 ev_at (w) += mn_now;
… …
2629 3634
2630 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3635 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2631} 3636}
2632 3637
2633void noinline 3638void noinline
2634ev_timer_stop (EV_P_ ev_timer *w) 3639ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2635{ 3640{
2636 clear_pending (EV_A_ (W)w); 3641 clear_pending (EV_A_ (W)w);
2637 if (expect_false (!ev_is_active (w))) 3642 if (expect_false (!ev_is_active (w)))
2638 return; 3643 return;
2639 3644
… …
2659 3664
2660 EV_FREQUENT_CHECK; 3665 EV_FREQUENT_CHECK;
2661} 3666}
2662 3667
2663void noinline 3668void noinline
2664ev_timer_again (EV_P_ ev_timer *w) 3669ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2665{ 3670{
2666 EV_FREQUENT_CHECK; 3671 EV_FREQUENT_CHECK;
3672
3673 clear_pending (EV_A_ (W)w);
2667 3674
2668 if (ev_is_active (w)) 3675 if (ev_is_active (w))
2669 { 3676 {
2670 if (w->repeat) 3677 if (w->repeat)
2671 { 3678 {
… …
2684 3691
2685 EV_FREQUENT_CHECK; 3692 EV_FREQUENT_CHECK;
2686} 3693}
2687 3694
2688ev_tstamp 3695ev_tstamp
2689ev_timer_remaining (EV_P_ ev_timer *w) 3696ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2690{ 3697{
2691 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3698 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2692} 3699}
2693 3700
2694#if EV_PERIODIC_ENABLE 3701#if EV_PERIODIC_ENABLE
2695void noinline 3702void noinline
2696ev_periodic_start (EV_P_ ev_periodic *w) 3703ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2697{ 3704{
2698 if (expect_false (ev_is_active (w))) 3705 if (expect_false (ev_is_active (w)))
2699 return; 3706 return;
2700 3707
2701 if (w->reschedule_cb) 3708 if (w->reschedule_cb)
2702 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3709 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2703 else if (w->interval) 3710 else if (w->interval)
2704 { 3711 {
2705 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3712 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2706 /* this formula differs from the one in periodic_reify because we do not always round up */ 3713 periodic_recalc (EV_A_ w);
2707 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2708 } 3714 }
2709 else 3715 else
2710 ev_at (w) = w->offset; 3716 ev_at (w) = w->offset;
2711 3717
2712 EV_FREQUENT_CHECK; 3718 EV_FREQUENT_CHECK;
… …
2722 3728
2723 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3729 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2724} 3730}
2725 3731
2726void noinline 3732void noinline
2727ev_periodic_stop (EV_P_ ev_periodic *w) 3733ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2728{ 3734{
2729 clear_pending (EV_A_ (W)w); 3735 clear_pending (EV_A_ (W)w);
2730 if (expect_false (!ev_is_active (w))) 3736 if (expect_false (!ev_is_active (w)))
2731 return; 3737 return;
2732 3738
… …
2750 3756
2751 EV_FREQUENT_CHECK; 3757 EV_FREQUENT_CHECK;
2752} 3758}
2753 3759
2754void noinline 3760void noinline
2755ev_periodic_again (EV_P_ ev_periodic *w) 3761ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2756{ 3762{
2757 /* TODO: use adjustheap and recalculation */ 3763 /* TODO: use adjustheap and recalculation */
2758 ev_periodic_stop (EV_A_ w); 3764 ev_periodic_stop (EV_A_ w);
2759 ev_periodic_start (EV_A_ w); 3765 ev_periodic_start (EV_A_ w);
2760} 3766}
… …
2765#endif 3771#endif
2766 3772
2767#if EV_SIGNAL_ENABLE 3773#if EV_SIGNAL_ENABLE
2768 3774
2769void noinline 3775void noinline
2770ev_signal_start (EV_P_ ev_signal *w) 3776ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2771{ 3777{
2772 if (expect_false (ev_is_active (w))) 3778 if (expect_false (ev_is_active (w)))
2773 return; 3779 return;
2774 3780
2775 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3781 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
2777#if EV_MULTIPLICITY 3783#if EV_MULTIPLICITY
2778 assert (("libev: a signal must not be attached to two different loops", 3784 assert (("libev: a signal must not be attached to two different loops",
2779 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 3785 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2780 3786
2781 signals [w->signum - 1].loop = EV_A; 3787 signals [w->signum - 1].loop = EV_A;
3788 ECB_MEMORY_FENCE_RELEASE;
2782#endif 3789#endif
2783 3790
2784 EV_FREQUENT_CHECK; 3791 EV_FREQUENT_CHECK;
2785 3792
2786#if EV_USE_SIGNALFD 3793#if EV_USE_SIGNALFD
… …
2833 sa.sa_handler = ev_sighandler; 3840 sa.sa_handler = ev_sighandler;
2834 sigfillset (&sa.sa_mask); 3841 sigfillset (&sa.sa_mask);
2835 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3842 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2836 sigaction (w->signum, &sa, 0); 3843 sigaction (w->signum, &sa, 0);
2837 3844
3845 if (origflags & EVFLAG_NOSIGMASK)
3846 {
2838 sigemptyset (&sa.sa_mask); 3847 sigemptyset (&sa.sa_mask);
2839 sigaddset (&sa.sa_mask, w->signum); 3848 sigaddset (&sa.sa_mask, w->signum);
2840 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3849 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3850 }
2841#endif 3851#endif
2842 } 3852 }
2843 3853
2844 EV_FREQUENT_CHECK; 3854 EV_FREQUENT_CHECK;
2845} 3855}
2846 3856
2847void noinline 3857void noinline
2848ev_signal_stop (EV_P_ ev_signal *w) 3858ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2849{ 3859{
2850 clear_pending (EV_A_ (W)w); 3860 clear_pending (EV_A_ (W)w);
2851 if (expect_false (!ev_is_active (w))) 3861 if (expect_false (!ev_is_active (w)))
2852 return; 3862 return;
2853 3863
… …
2884#endif 3894#endif
2885 3895
2886#if EV_CHILD_ENABLE 3896#if EV_CHILD_ENABLE
2887 3897
2888void 3898void
2889ev_child_start (EV_P_ ev_child *w) 3899ev_child_start (EV_P_ ev_child *w) EV_THROW
2890{ 3900{
2891#if EV_MULTIPLICITY 3901#if EV_MULTIPLICITY
2892 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3902 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2893#endif 3903#endif
2894 if (expect_false (ev_is_active (w))) 3904 if (expect_false (ev_is_active (w)))
… …
2901 3911
2902 EV_FREQUENT_CHECK; 3912 EV_FREQUENT_CHECK;
2903} 3913}
2904 3914
2905void 3915void
2906ev_child_stop (EV_P_ ev_child *w) 3916ev_child_stop (EV_P_ ev_child *w) EV_THROW
2907{ 3917{
2908 clear_pending (EV_A_ (W)w); 3918 clear_pending (EV_A_ (W)w);
2909 if (expect_false (!ev_is_active (w))) 3919 if (expect_false (!ev_is_active (w)))
2910 return; 3920 return;
2911 3921
… …
2938# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 3948# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2939 3949
2940static void noinline 3950static void noinline
2941infy_add (EV_P_ ev_stat *w) 3951infy_add (EV_P_ ev_stat *w)
2942{ 3952{
2943 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); 3953 w->wd = inotify_add_watch (fs_fd, w->path,
3954 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
3955 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
3956 | IN_DONT_FOLLOW | IN_MASK_ADD);
2944 3957
2945 if (w->wd >= 0) 3958 if (w->wd >= 0)
2946 { 3959 {
2947 struct statfs sfs; 3960 struct statfs sfs;
2948 3961
… …
2952 3965
2953 if (!fs_2625) 3966 if (!fs_2625)
2954 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3967 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2955 else if (!statfs (w->path, &sfs) 3968 else if (!statfs (w->path, &sfs)
2956 && (sfs.f_type == 0x1373 /* devfs */ 3969 && (sfs.f_type == 0x1373 /* devfs */
3970 || sfs.f_type == 0x4006 /* fat */
3971 || sfs.f_type == 0x4d44 /* msdos */
2957 || sfs.f_type == 0xEF53 /* ext2/3 */ 3972 || sfs.f_type == 0xEF53 /* ext2/3 */
3973 || sfs.f_type == 0x72b6 /* jffs2 */
3974 || sfs.f_type == 0x858458f6 /* ramfs */
3975 || sfs.f_type == 0x5346544e /* ntfs */
2958 || sfs.f_type == 0x3153464a /* jfs */ 3976 || sfs.f_type == 0x3153464a /* jfs */
3977 || sfs.f_type == 0x9123683e /* btrfs */
2959 || sfs.f_type == 0x52654973 /* reiser3 */ 3978 || sfs.f_type == 0x52654973 /* reiser3 */
2960 || sfs.f_type == 0x01021994 /* tempfs */ 3979 || sfs.f_type == 0x01021994 /* tmpfs */
2961 || sfs.f_type == 0x58465342 /* xfs */)) 3980 || sfs.f_type == 0x58465342 /* xfs */))
2962 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 3981 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2963 else 3982 else
2964 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 3983 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2965 } 3984 }
… …
2986 if (!pend || pend == path) 4005 if (!pend || pend == path)
2987 break; 4006 break;
2988 4007
2989 *pend = 0; 4008 *pend = 0;
2990 w->wd = inotify_add_watch (fs_fd, path, mask); 4009 w->wd = inotify_add_watch (fs_fd, path, mask);
2991 } 4010 }
2992 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4011 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2993 } 4012 }
2994 } 4013 }
2995 4014
2996 if (w->wd >= 0) 4015 if (w->wd >= 0)
… …
3063 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4082 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3064 ofs += sizeof (struct inotify_event) + ev->len; 4083 ofs += sizeof (struct inotify_event) + ev->len;
3065 } 4084 }
3066} 4085}
3067 4086
3068inline_size unsigned int
3069ev_linux_version (void)
3070{
3071 struct utsname buf;
3072 unsigned int v;
3073 int i;
3074 char *p = buf.release;
3075
3076 if (uname (&buf))
3077 return 0;
3078
3079 for (i = 3+1; --i; )
3080 {
3081 unsigned int c = 0;
3082
3083 for (;;)
3084 {
3085 if (*p >= '0' && *p <= '9')
3086 c = c * 10 + *p++ - '0';
3087 else
3088 {
3089 p += *p == '.';
3090 break;
3091 }
3092 }
3093
3094 v = (v << 8) | c;
3095 }
3096
3097 return v;
3098}
3099
3100inline_size void 4087inline_size void ecb_cold
3101ev_check_2625 (EV_P) 4088ev_check_2625 (EV_P)
3102{ 4089{
3103 /* kernels < 2.6.25 are borked 4090 /* kernels < 2.6.25 are borked
3104 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4091 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3105 */ 4092 */
… …
3110} 4097}
3111 4098
3112inline_size int 4099inline_size int
3113infy_newfd (void) 4100infy_newfd (void)
3114{ 4101{
3115#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4102#if defined IN_CLOEXEC && defined IN_NONBLOCK
3116 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4103 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3117 if (fd >= 0) 4104 if (fd >= 0)
3118 return fd; 4105 return fd;
3119#endif 4106#endif
3120 return inotify_init (); 4107 return inotify_init ();
… …
3195#else 4182#else
3196# define EV_LSTAT(p,b) lstat (p, b) 4183# define EV_LSTAT(p,b) lstat (p, b)
3197#endif 4184#endif
3198 4185
3199void 4186void
3200ev_stat_stat (EV_P_ ev_stat *w) 4187ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3201{ 4188{
3202 if (lstat (w->path, &w->attr) < 0) 4189 if (lstat (w->path, &w->attr) < 0)
3203 w->attr.st_nlink = 0; 4190 w->attr.st_nlink = 0;
3204 else if (!w->attr.st_nlink) 4191 else if (!w->attr.st_nlink)
3205 w->attr.st_nlink = 1; 4192 w->attr.st_nlink = 1;
… …
3244 ev_feed_event (EV_A_ w, EV_STAT); 4231 ev_feed_event (EV_A_ w, EV_STAT);
3245 } 4232 }
3246} 4233}
3247 4234
3248void 4235void
3249ev_stat_start (EV_P_ ev_stat *w) 4236ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3250{ 4237{
3251 if (expect_false (ev_is_active (w))) 4238 if (expect_false (ev_is_active (w)))
3252 return; 4239 return;
3253 4240
3254 ev_stat_stat (EV_A_ w); 4241 ev_stat_stat (EV_A_ w);
… …
3275 4262
3276 EV_FREQUENT_CHECK; 4263 EV_FREQUENT_CHECK;
3277} 4264}
3278 4265
3279void 4266void
3280ev_stat_stop (EV_P_ ev_stat *w) 4267ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3281{ 4268{
3282 clear_pending (EV_A_ (W)w); 4269 clear_pending (EV_A_ (W)w);
3283 if (expect_false (!ev_is_active (w))) 4270 if (expect_false (!ev_is_active (w)))
3284 return; 4271 return;
3285 4272
… …
3301} 4288}
3302#endif 4289#endif
3303 4290
3304#if EV_IDLE_ENABLE 4291#if EV_IDLE_ENABLE
3305void 4292void
3306ev_idle_start (EV_P_ ev_idle *w) 4293ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3307{ 4294{
3308 if (expect_false (ev_is_active (w))) 4295 if (expect_false (ev_is_active (w)))
3309 return; 4296 return;
3310 4297
3311 pri_adjust (EV_A_ (W)w); 4298 pri_adjust (EV_A_ (W)w);
… …
3324 4311
3325 EV_FREQUENT_CHECK; 4312 EV_FREQUENT_CHECK;
3326} 4313}
3327 4314
3328void 4315void
3329ev_idle_stop (EV_P_ ev_idle *w) 4316ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3330{ 4317{
3331 clear_pending (EV_A_ (W)w); 4318 clear_pending (EV_A_ (W)w);
3332 if (expect_false (!ev_is_active (w))) 4319 if (expect_false (!ev_is_active (w)))
3333 return; 4320 return;
3334 4321
… …
3348} 4335}
3349#endif 4336#endif
3350 4337
3351#if EV_PREPARE_ENABLE 4338#if EV_PREPARE_ENABLE
3352void 4339void
3353ev_prepare_start (EV_P_ ev_prepare *w) 4340ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3354{ 4341{
3355 if (expect_false (ev_is_active (w))) 4342 if (expect_false (ev_is_active (w)))
3356 return; 4343 return;
3357 4344
3358 EV_FREQUENT_CHECK; 4345 EV_FREQUENT_CHECK;
… …
3363 4350
3364 EV_FREQUENT_CHECK; 4351 EV_FREQUENT_CHECK;
3365} 4352}
3366 4353
3367void 4354void
3368ev_prepare_stop (EV_P_ ev_prepare *w) 4355ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3369{ 4356{
3370 clear_pending (EV_A_ (W)w); 4357 clear_pending (EV_A_ (W)w);
3371 if (expect_false (!ev_is_active (w))) 4358 if (expect_false (!ev_is_active (w)))
3372 return; 4359 return;
3373 4360
… …
3386} 4373}
3387#endif 4374#endif
3388 4375
3389#if EV_CHECK_ENABLE 4376#if EV_CHECK_ENABLE
3390void 4377void
3391ev_check_start (EV_P_ ev_check *w) 4378ev_check_start (EV_P_ ev_check *w) EV_THROW
3392{ 4379{
3393 if (expect_false (ev_is_active (w))) 4380 if (expect_false (ev_is_active (w)))
3394 return; 4381 return;
3395 4382
3396 EV_FREQUENT_CHECK; 4383 EV_FREQUENT_CHECK;
… …
3401 4388
3402 EV_FREQUENT_CHECK; 4389 EV_FREQUENT_CHECK;
3403} 4390}
3404 4391
3405void 4392void
3406ev_check_stop (EV_P_ ev_check *w) 4393ev_check_stop (EV_P_ ev_check *w) EV_THROW
3407{ 4394{
3408 clear_pending (EV_A_ (W)w); 4395 clear_pending (EV_A_ (W)w);
3409 if (expect_false (!ev_is_active (w))) 4396 if (expect_false (!ev_is_active (w)))
3410 return; 4397 return;
3411 4398
… …
3424} 4411}
3425#endif 4412#endif
3426 4413
3427#if EV_EMBED_ENABLE 4414#if EV_EMBED_ENABLE
3428void noinline 4415void noinline
3429ev_embed_sweep (EV_P_ ev_embed *w) 4416ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3430{ 4417{
3431 ev_loop (w->other, EVLOOP_NONBLOCK); 4418 ev_run (w->other, EVRUN_NOWAIT);
3432} 4419}
3433 4420
3434static void 4421static void
3435embed_io_cb (EV_P_ ev_io *io, int revents) 4422embed_io_cb (EV_P_ ev_io *io, int revents)
3436{ 4423{
3437 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4424 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3438 4425
3439 if (ev_cb (w)) 4426 if (ev_cb (w))
3440 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4427 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3441 else 4428 else
3442 ev_loop (w->other, EVLOOP_NONBLOCK); 4429 ev_run (w->other, EVRUN_NOWAIT);
3443} 4430}
3444 4431
3445static void 4432static void
3446embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4433embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3447{ 4434{
… …
3451 EV_P = w->other; 4438 EV_P = w->other;
3452 4439
3453 while (fdchangecnt) 4440 while (fdchangecnt)
3454 { 4441 {
3455 fd_reify (EV_A); 4442 fd_reify (EV_A);
3456 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4443 ev_run (EV_A_ EVRUN_NOWAIT);
3457 } 4444 }
3458 } 4445 }
3459} 4446}
3460 4447
3461static void 4448static void
… …
3467 4454
3468 { 4455 {
3469 EV_P = w->other; 4456 EV_P = w->other;
3470 4457
3471 ev_loop_fork (EV_A); 4458 ev_loop_fork (EV_A);
3472 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4459 ev_run (EV_A_ EVRUN_NOWAIT);
3473 } 4460 }
3474 4461
3475 ev_embed_start (EV_A_ w); 4462 ev_embed_start (EV_A_ w);
3476} 4463}
3477 4464
… …
3482 ev_idle_stop (EV_A_ idle); 4469 ev_idle_stop (EV_A_ idle);
3483} 4470}
3484#endif 4471#endif
3485 4472
3486void 4473void
3487ev_embed_start (EV_P_ ev_embed *w) 4474ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3488{ 4475{
3489 if (expect_false (ev_is_active (w))) 4476 if (expect_false (ev_is_active (w)))
3490 return; 4477 return;
3491 4478
3492 { 4479 {
… …
3513 4500
3514 EV_FREQUENT_CHECK; 4501 EV_FREQUENT_CHECK;
3515} 4502}
3516 4503
3517void 4504void
3518ev_embed_stop (EV_P_ ev_embed *w) 4505ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3519{ 4506{
3520 clear_pending (EV_A_ (W)w); 4507 clear_pending (EV_A_ (W)w);
3521 if (expect_false (!ev_is_active (w))) 4508 if (expect_false (!ev_is_active (w)))
3522 return; 4509 return;
3523 4510
… …
3533} 4520}
3534#endif 4521#endif
3535 4522
3536#if EV_FORK_ENABLE 4523#if EV_FORK_ENABLE
3537void 4524void
3538ev_fork_start (EV_P_ ev_fork *w) 4525ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3539{ 4526{
3540 if (expect_false (ev_is_active (w))) 4527 if (expect_false (ev_is_active (w)))
3541 return; 4528 return;
3542 4529
3543 EV_FREQUENT_CHECK; 4530 EV_FREQUENT_CHECK;
… …
3548 4535
3549 EV_FREQUENT_CHECK; 4536 EV_FREQUENT_CHECK;
3550} 4537}
3551 4538
3552void 4539void
3553ev_fork_stop (EV_P_ ev_fork *w) 4540ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3554{ 4541{
3555 clear_pending (EV_A_ (W)w); 4542 clear_pending (EV_A_ (W)w);
3556 if (expect_false (!ev_is_active (w))) 4543 if (expect_false (!ev_is_active (w)))
3557 return; 4544 return;
3558 4545
… …
3569 4556
3570 EV_FREQUENT_CHECK; 4557 EV_FREQUENT_CHECK;
3571} 4558}
3572#endif 4559#endif
3573 4560
4561#if EV_CLEANUP_ENABLE
4562void
4563ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4564{
4565 if (expect_false (ev_is_active (w)))
4566 return;
4567
4568 EV_FREQUENT_CHECK;
4569
4570 ev_start (EV_A_ (W)w, ++cleanupcnt);
4571 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4572 cleanups [cleanupcnt - 1] = w;
4573
4574 /* cleanup watchers should never keep a refcount on the loop */
4575 ev_unref (EV_A);
4576 EV_FREQUENT_CHECK;
4577}
4578
4579void
4580ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4581{
4582 clear_pending (EV_A_ (W)w);
4583 if (expect_false (!ev_is_active (w)))
4584 return;
4585
4586 EV_FREQUENT_CHECK;
4587 ev_ref (EV_A);
4588
4589 {
4590 int active = ev_active (w);
4591
4592 cleanups [active - 1] = cleanups [--cleanupcnt];
4593 ev_active (cleanups [active - 1]) = active;
4594 }
4595
4596 ev_stop (EV_A_ (W)w);
4597
4598 EV_FREQUENT_CHECK;
4599}
4600#endif
4601
3574#if EV_ASYNC_ENABLE 4602#if EV_ASYNC_ENABLE
3575void 4603void
3576ev_async_start (EV_P_ ev_async *w) 4604ev_async_start (EV_P_ ev_async *w) EV_THROW
3577{ 4605{
3578 if (expect_false (ev_is_active (w))) 4606 if (expect_false (ev_is_active (w)))
3579 return; 4607 return;
4608
4609 w->sent = 0;
3580 4610
3581 evpipe_init (EV_A); 4611 evpipe_init (EV_A);
3582 4612
3583 EV_FREQUENT_CHECK; 4613 EV_FREQUENT_CHECK;
3584 4614
… …
3588 4618
3589 EV_FREQUENT_CHECK; 4619 EV_FREQUENT_CHECK;
3590} 4620}
3591 4621
3592void 4622void
3593ev_async_stop (EV_P_ ev_async *w) 4623ev_async_stop (EV_P_ ev_async *w) EV_THROW
3594{ 4624{
3595 clear_pending (EV_A_ (W)w); 4625 clear_pending (EV_A_ (W)w);
3596 if (expect_false (!ev_is_active (w))) 4626 if (expect_false (!ev_is_active (w)))
3597 return; 4627 return;
3598 4628
… …
3609 4639
3610 EV_FREQUENT_CHECK; 4640 EV_FREQUENT_CHECK;
3611} 4641}
3612 4642
3613void 4643void
3614ev_async_send (EV_P_ ev_async *w) 4644ev_async_send (EV_P_ ev_async *w) EV_THROW
3615{ 4645{
3616 w->sent = 1; 4646 w->sent = 1;
3617 evpipe_write (EV_A_ &async_pending); 4647 evpipe_write (EV_A_ &async_pending);
3618} 4648}
3619#endif 4649#endif
… …
3656 4686
3657 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4687 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3658} 4688}
3659 4689
3660void 4690void
3661ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4691ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3662{ 4692{
3663 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4693 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3664 4694
3665 if (expect_false (!once)) 4695 if (expect_false (!once))
3666 { 4696 {
… …
3687} 4717}
3688 4718
3689/*****************************************************************************/ 4719/*****************************************************************************/
3690 4720
3691#if EV_WALK_ENABLE 4721#if EV_WALK_ENABLE
3692void 4722void ecb_cold
3693ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4723ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3694{ 4724{
3695 int i, j; 4725 int i, j;
3696 ev_watcher_list *wl, *wn; 4726 ev_watcher_list *wl, *wn;
3697 4727
3698 if (types & (EV_IO | EV_EMBED)) 4728 if (types & (EV_IO | EV_EMBED))
… …
3741 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4771 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3742#endif 4772#endif
3743 4773
3744#if EV_IDLE_ENABLE 4774#if EV_IDLE_ENABLE
3745 if (types & EV_IDLE) 4775 if (types & EV_IDLE)
3746 for (j = NUMPRI; i--; ) 4776 for (j = NUMPRI; j--; )
3747 for (i = idlecnt [j]; i--; ) 4777 for (i = idlecnt [j]; i--; )
3748 cb (EV_A_ EV_IDLE, idles [j][i]); 4778 cb (EV_A_ EV_IDLE, idles [j][i]);
3749#endif 4779#endif
3750 4780
3751#if EV_FORK_ENABLE 4781#if EV_FORK_ENABLE
… …
3804 4834
3805#if EV_MULTIPLICITY 4835#if EV_MULTIPLICITY
3806 #include "ev_wrap.h" 4836 #include "ev_wrap.h"
3807#endif 4837#endif
3808 4838
3809#ifdef __cplusplus
3810}
3811#endif
3812

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