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Comparing libev/ev.c (file contents):
Revision 1.370 by root, Sun Jan 30 19:05:41 2011 UTC vs.
Revision 1.451 by root, Tue Jan 22 05:18:28 2013 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010,2011 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,
… …
43# include EV_CONFIG_H 43# include EV_CONFIG_H
44# else 44# else
45# include "config.h" 45# include "config.h"
46# endif 46# endif
47 47
48#if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
52#endif
53
48# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
49# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
50# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
51# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
52# define EV_USE_REALTIME 0 58# define EV_USE_REALTIME 0
53# endif 59# endif
54# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
55# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
56# endif 62# endif
57# endif 63# endif
58# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
59# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
60# endif 66# endif
61 67
62# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
63# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
156# define EV_USE_EVENTFD 0 162# define EV_USE_EVENTFD 0
157# endif 163# endif
158 164
159#endif 165#endif
160 166
161#include <math.h>
162#include <stdlib.h> 167#include <stdlib.h>
163#include <string.h> 168#include <string.h>
164#include <fcntl.h> 169#include <fcntl.h>
165#include <stddef.h> 170#include <stddef.h>
166 171
… …
178# include EV_H 183# include EV_H
179#else 184#else
180# include "ev.h" 185# include "ev.h"
181#endif 186#endif
182 187
183EV_CPP(extern "C" {) 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
197#endif
184 198
185#ifndef _WIN32 199#ifndef _WIN32
186# include <sys/time.h> 200# include <sys/time.h>
187# include <sys/wait.h> 201# include <sys/wait.h>
188# include <unistd.h> 202# include <unistd.h>
189#else 203#else
190# include <io.h> 204# include <io.h>
191# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
206# include <winsock2.h>
192# include <windows.h> 207# include <windows.h>
193# ifndef EV_SELECT_IS_WINSOCKET 208# ifndef EV_SELECT_IS_WINSOCKET
194# define EV_SELECT_IS_WINSOCKET 1 209# define EV_SELECT_IS_WINSOCKET 1
195# endif 210# endif
196# undef EV_AVOID_STDIO 211# undef EV_AVOID_STDIO
… …
205#define _DARWIN_UNLIMITED_SELECT 1 220#define _DARWIN_UNLIMITED_SELECT 1
206 221
207/* 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 */
208 223
209/* try to deduce the maximum number of signals on this platform */ 224/* try to deduce the maximum number of signals on this platform */
210#if defined (EV_NSIG) 225#if defined EV_NSIG
211/* use what's provided */ 226/* use what's provided */
212#elif defined (NSIG) 227#elif defined NSIG
213# define EV_NSIG (NSIG) 228# define EV_NSIG (NSIG)
214#elif defined(_NSIG) 229#elif defined _NSIG
215# define EV_NSIG (_NSIG) 230# define EV_NSIG (_NSIG)
216#elif defined (SIGMAX) 231#elif defined SIGMAX
217# define EV_NSIG (SIGMAX+1) 232# define EV_NSIG (SIGMAX+1)
218#elif defined (SIG_MAX) 233#elif defined SIG_MAX
219# define EV_NSIG (SIG_MAX+1) 234# define EV_NSIG (SIG_MAX+1)
220#elif defined (_SIG_MAX) 235#elif defined _SIG_MAX
221# define EV_NSIG (_SIG_MAX+1) 236# define EV_NSIG (_SIG_MAX+1)
222#elif defined (MAXSIG) 237#elif defined MAXSIG
223# define EV_NSIG (MAXSIG+1) 238# define EV_NSIG (MAXSIG+1)
224#elif defined (MAX_SIG) 239#elif defined MAX_SIG
225# define EV_NSIG (MAX_SIG+1) 240# define EV_NSIG (MAX_SIG+1)
226#elif defined (SIGARRAYSIZE) 241#elif defined SIGARRAYSIZE
227# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 242# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
228#elif defined (_sys_nsig) 243#elif defined _sys_nsig
229# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 244# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
230#else 245#else
231# error "unable to find value for NSIG, please report" 246# error "unable to find value for NSIG, please report"
232/* to make it compile regardless, just remove the above line, */ 247/* to make it compile regardless, just remove the above line, */
233/* but consider reporting it, too! :) */ 248/* but consider reporting it, too! :) */
234# define EV_NSIG 65 249# define EV_NSIG 65
235#endif 250#endif
236 251
252#ifndef EV_USE_FLOOR
253# define EV_USE_FLOOR 0
254#endif
255
237#ifndef EV_USE_CLOCK_SYSCALL 256#ifndef EV_USE_CLOCK_SYSCALL
238# if __linux && __GLIBC__ >= 2 257# if __linux && __GLIBC__ >= 2
239# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 258# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
240# else 259# else
241# define EV_USE_CLOCK_SYSCALL 0 260# define EV_USE_CLOCK_SYSCALL 0
242# endif 261# endif
243#endif 262#endif
244 263
245#ifndef EV_USE_MONOTONIC 264#ifndef EV_USE_MONOTONIC
246# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 265# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
247# define EV_USE_MONOTONIC EV_FEATURE_OS 266# define EV_USE_MONOTONIC EV_FEATURE_OS
248# else 267# else
249# define EV_USE_MONOTONIC 0 268# define EV_USE_MONOTONIC 0
250# endif 269# endif
251#endif 270#endif
… …
341#endif 360#endif
342 361
343/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 362/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
344/* which makes programs even slower. might work on other unices, too. */ 363/* which makes programs even slower. might work on other unices, too. */
345#if EV_USE_CLOCK_SYSCALL 364#if EV_USE_CLOCK_SYSCALL
346# include <syscall.h> 365# include <sys/syscall.h>
347# ifdef SYS_clock_gettime 366# ifdef SYS_clock_gettime
348# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 367# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
349# undef EV_USE_MONOTONIC 368# undef EV_USE_MONOTONIC
350# define EV_USE_MONOTONIC 1 369# define EV_USE_MONOTONIC 1
351# else 370# else
… …
377# define EV_USE_INOTIFY 0 396# define EV_USE_INOTIFY 0
378#endif 397#endif
379 398
380#if !EV_USE_NANOSLEEP 399#if !EV_USE_NANOSLEEP
381/* hp-ux has it in sys/time.h, which we unconditionally include above */ 400/* hp-ux has it in sys/time.h, which we unconditionally include above */
382# if !defined(_WIN32) && !defined(__hpux) 401# if !defined _WIN32 && !defined __hpux
383# include <sys/select.h> 402# include <sys/select.h>
384# endif 403# endif
385#endif 404#endif
386 405
387#if EV_USE_INOTIFY 406#if EV_USE_INOTIFY
… …
390/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 409/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
391# ifndef IN_DONT_FOLLOW 410# ifndef IN_DONT_FOLLOW
392# undef EV_USE_INOTIFY 411# undef EV_USE_INOTIFY
393# define EV_USE_INOTIFY 0 412# define EV_USE_INOTIFY 0
394# endif 413# endif
395#endif
396
397#if EV_SELECT_IS_WINSOCKET
398# include <winsock.h>
399#endif 414#endif
400 415
401#if EV_USE_EVENTFD 416#if EV_USE_EVENTFD
402/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 417/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
403# include <stdint.h> 418# include <stdint.h>
… …
443#else 458#else
444# define EV_FREQUENT_CHECK do { } while (0) 459# define EV_FREQUENT_CHECK do { } while (0)
445#endif 460#endif
446 461
447/* 462/*
448 * This is used to avoid floating point rounding problems. 463 * This is used to work around floating point rounding problems.
449 * It is added to ev_rt_now when scheduling periodics
450 * to ensure progress, time-wise, even when rounding
451 * errors are against us.
452 * This value is good at least till the year 4000. 464 * This value is good at least till the year 4000.
453 * Better solutions welcome.
454 */ 465 */
455#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 466#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
467/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
456 468
457#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 469#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
458#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 470#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
459 471
460#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) 472#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
461#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0) 473#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
462 474
475/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
476/* ECB.H BEGIN */
477/*
478 * libecb - http://software.schmorp.de/pkg/libecb
479 *
480 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de>
481 * Copyright (©) 2011 Emanuele Giaquinta
482 * All rights reserved.
483 *
484 * Redistribution and use in source and binary forms, with or without modifica-
485 * tion, are permitted provided that the following conditions are met:
486 *
487 * 1. Redistributions of source code must retain the above copyright notice,
488 * this list of conditions and the following disclaimer.
489 *
490 * 2. Redistributions in binary form must reproduce the above copyright
491 * notice, this list of conditions and the following disclaimer in the
492 * documentation and/or other materials provided with the distribution.
493 *
494 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
495 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
496 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
497 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
498 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
499 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
500 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
501 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
502 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
503 * OF THE POSSIBILITY OF SUCH DAMAGE.
504 */
505
506#ifndef ECB_H
507#define ECB_H
508
509/* 16 bits major, 16 bits minor */
510#define ECB_VERSION 0x00010002
511
512#ifdef _WIN32
513 typedef signed char int8_t;
514 typedef unsigned char uint8_t;
515 typedef signed short int16_t;
516 typedef unsigned short uint16_t;
517 typedef signed int int32_t;
518 typedef unsigned int uint32_t;
463#if __GNUC__ >= 4 519 #if __GNUC__
464# define expect(expr,value) __builtin_expect ((expr),(value)) 520 typedef signed long long int64_t;
465# define noinline __attribute__ ((noinline)) 521 typedef unsigned long long uint64_t;
522 #else /* _MSC_VER || __BORLANDC__ */
523 typedef signed __int64 int64_t;
524 typedef unsigned __int64 uint64_t;
525 #endif
526 #ifdef _WIN64
527 #define ECB_PTRSIZE 8
528 typedef uint64_t uintptr_t;
529 typedef int64_t intptr_t;
530 #else
531 #define ECB_PTRSIZE 4
532 typedef uint32_t uintptr_t;
533 typedef int32_t intptr_t;
534 #endif
466#else 535#else
467# define expect(expr,value) (expr) 536 #include <inttypes.h>
468# define noinline 537 #if UINTMAX_MAX > 0xffffffffU
469# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 538 #define ECB_PTRSIZE 8
470# define inline 539 #else
540 #define ECB_PTRSIZE 4
541 #endif
471# endif 542#endif
543
544/* many compilers define _GNUC_ to some versions but then only implement
545 * what their idiot authors think are the "more important" extensions,
546 * causing enormous grief in return for some better fake benchmark numbers.
547 * or so.
548 * we try to detect these and simply assume they are not gcc - if they have
549 * an issue with that they should have done it right in the first place.
550 */
551#ifndef ECB_GCC_VERSION
552 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
553 #define ECB_GCC_VERSION(major,minor) 0
554 #else
555 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
472#endif 556 #endif
557#endif
473 558
559#define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */
560#define ECB_C99 (__STDC_VERSION__ >= 199901L)
561#define ECB_C11 (__STDC_VERSION__ >= 201112L)
562#define ECB_CPP (__cplusplus+0)
563#define ECB_CPP11 (__cplusplus >= 201103L)
564
565#if ECB_CPP
566 #define ECB_EXTERN_C extern "C"
567 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
568 #define ECB_EXTERN_C_END }
569#else
570 #define ECB_EXTERN_C extern
571 #define ECB_EXTERN_C_BEG
572 #define ECB_EXTERN_C_END
573#endif
574
575/*****************************************************************************/
576
577/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
578/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
579
580#if ECB_NO_THREADS
581 #define ECB_NO_SMP 1
582#endif
583
584#if ECB_NO_SMP
585 #define ECB_MEMORY_FENCE do { } while (0)
586#endif
587
588#ifndef ECB_MEMORY_FENCE
589 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
590 #if __i386 || __i386__
591 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
592 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
593 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
594 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
595 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
596 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
597 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
598 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
599 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
600 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
601 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
602 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
603 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
604 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
605 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
606 #elif __sparc || __sparc__
607 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
608 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
609 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
610 #elif defined __s390__ || defined __s390x__
611 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
612 #elif defined __mips__
613 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
614 #elif defined __alpha__
615 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
616 #elif defined __hppa__
617 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
618 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
619 #elif defined __ia64__
620 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
621 #endif
622 #endif
623#endif
624
625#ifndef ECB_MEMORY_FENCE
626 #if ECB_GCC_VERSION(4,7)
627 /* see comment below (stdatomic.h) about the C11 memory model. */
628 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
629
630 /* The __has_feature syntax from clang is so misdesigned that we cannot use it
631 * without risking compile time errors with other compilers. We *could*
632 * define our own ecb_clang_has_feature, but I just can't be bothered to work
633 * around this shit time and again.
634 * #elif defined __clang && __has_feature (cxx_atomic)
635 * // see comment below (stdatomic.h) about the C11 memory model.
636 * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
637 */
638
639 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
640 #define ECB_MEMORY_FENCE __sync_synchronize ()
641 #elif _MSC_VER >= 1400 /* VC++ 2005 */
642 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
643 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
644 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
645 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
646 #elif defined _WIN32
647 #include <WinNT.h>
648 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
649 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
650 #include <mbarrier.h>
651 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
652 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
653 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
654 #elif __xlC__
655 #define ECB_MEMORY_FENCE __sync ()
656 #endif
657#endif
658
659#ifndef ECB_MEMORY_FENCE
660 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
661 /* we assume that these memory fences work on all variables/all memory accesses, */
662 /* not just C11 atomics and atomic accesses */
663 #include <stdatomic.h>
664 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
665 /* any fence other than seq_cst, which isn't very efficient for us. */
666 /* Why that is, we don't know - either the C11 memory model is quite useless */
667 /* for most usages, or gcc and clang have a bug */
668 /* I *currently* lean towards the latter, and inefficiently implement */
669 /* all three of ecb's fences as a seq_cst fence */
670 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
671 #endif
672#endif
673
674#ifndef ECB_MEMORY_FENCE
675 #if !ECB_AVOID_PTHREADS
676 /*
677 * if you get undefined symbol references to pthread_mutex_lock,
678 * or failure to find pthread.h, then you should implement
679 * the ECB_MEMORY_FENCE operations for your cpu/compiler
680 * OR provide pthread.h and link against the posix thread library
681 * of your system.
682 */
683 #include <pthread.h>
684 #define ECB_NEEDS_PTHREADS 1
685 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
686
687 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
688 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
689 #endif
690#endif
691
692#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
693 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
694#endif
695
696#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
697 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
698#endif
699
700/*****************************************************************************/
701
702#if __cplusplus
703 #define ecb_inline static inline
704#elif ECB_GCC_VERSION(2,5)
705 #define ecb_inline static __inline__
706#elif ECB_C99
707 #define ecb_inline static inline
708#else
709 #define ecb_inline static
710#endif
711
712#if ECB_GCC_VERSION(3,3)
713 #define ecb_restrict __restrict__
714#elif ECB_C99
715 #define ecb_restrict restrict
716#else
717 #define ecb_restrict
718#endif
719
720typedef int ecb_bool;
721
722#define ECB_CONCAT_(a, b) a ## b
723#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
724#define ECB_STRINGIFY_(a) # a
725#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
726
727#define ecb_function_ ecb_inline
728
729#if ECB_GCC_VERSION(3,1)
730 #define ecb_attribute(attrlist) __attribute__(attrlist)
731 #define ecb_is_constant(expr) __builtin_constant_p (expr)
732 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
733 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
734#else
735 #define ecb_attribute(attrlist)
736 #define ecb_is_constant(expr) 0
737 #define ecb_expect(expr,value) (expr)
738 #define ecb_prefetch(addr,rw,locality)
739#endif
740
741/* no emulation for ecb_decltype */
742#if ECB_GCC_VERSION(4,5)
743 #define ecb_decltype(x) __decltype(x)
744#elif ECB_GCC_VERSION(3,0)
745 #define ecb_decltype(x) __typeof(x)
746#endif
747
748#define ecb_noinline ecb_attribute ((__noinline__))
749#define ecb_unused ecb_attribute ((__unused__))
750#define ecb_const ecb_attribute ((__const__))
751#define ecb_pure ecb_attribute ((__pure__))
752
753#if ECB_C11
754 #define ecb_noreturn _Noreturn
755#else
756 #define ecb_noreturn ecb_attribute ((__noreturn__))
757#endif
758
759#if ECB_GCC_VERSION(4,3)
760 #define ecb_artificial ecb_attribute ((__artificial__))
761 #define ecb_hot ecb_attribute ((__hot__))
762 #define ecb_cold ecb_attribute ((__cold__))
763#else
764 #define ecb_artificial
765 #define ecb_hot
766 #define ecb_cold
767#endif
768
769/* put around conditional expressions if you are very sure that the */
770/* expression is mostly true or mostly false. note that these return */
771/* booleans, not the expression. */
474#define expect_false(expr) expect ((expr) != 0, 0) 772#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
475#define expect_true(expr) expect ((expr) != 0, 1) 773#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
774/* for compatibility to the rest of the world */
775#define ecb_likely(expr) ecb_expect_true (expr)
776#define ecb_unlikely(expr) ecb_expect_false (expr)
777
778/* count trailing zero bits and count # of one bits */
779#if ECB_GCC_VERSION(3,4)
780 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
781 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
782 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
783 #define ecb_ctz32(x) __builtin_ctz (x)
784 #define ecb_ctz64(x) __builtin_ctzll (x)
785 #define ecb_popcount32(x) __builtin_popcount (x)
786 /* no popcountll */
787#else
788 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
789 ecb_function_ int
790 ecb_ctz32 (uint32_t x)
791 {
792 int r = 0;
793
794 x &= ~x + 1; /* this isolates the lowest bit */
795
796#if ECB_branchless_on_i386
797 r += !!(x & 0xaaaaaaaa) << 0;
798 r += !!(x & 0xcccccccc) << 1;
799 r += !!(x & 0xf0f0f0f0) << 2;
800 r += !!(x & 0xff00ff00) << 3;
801 r += !!(x & 0xffff0000) << 4;
802#else
803 if (x & 0xaaaaaaaa) r += 1;
804 if (x & 0xcccccccc) r += 2;
805 if (x & 0xf0f0f0f0) r += 4;
806 if (x & 0xff00ff00) r += 8;
807 if (x & 0xffff0000) r += 16;
808#endif
809
810 return r;
811 }
812
813 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
814 ecb_function_ int
815 ecb_ctz64 (uint64_t x)
816 {
817 int shift = x & 0xffffffffU ? 0 : 32;
818 return ecb_ctz32 (x >> shift) + shift;
819 }
820
821 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
822 ecb_function_ int
823 ecb_popcount32 (uint32_t x)
824 {
825 x -= (x >> 1) & 0x55555555;
826 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
827 x = ((x >> 4) + x) & 0x0f0f0f0f;
828 x *= 0x01010101;
829
830 return x >> 24;
831 }
832
833 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
834 ecb_function_ int ecb_ld32 (uint32_t x)
835 {
836 int r = 0;
837
838 if (x >> 16) { x >>= 16; r += 16; }
839 if (x >> 8) { x >>= 8; r += 8; }
840 if (x >> 4) { x >>= 4; r += 4; }
841 if (x >> 2) { x >>= 2; r += 2; }
842 if (x >> 1) { r += 1; }
843
844 return r;
845 }
846
847 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
848 ecb_function_ int ecb_ld64 (uint64_t x)
849 {
850 int r = 0;
851
852 if (x >> 32) { x >>= 32; r += 32; }
853
854 return r + ecb_ld32 (x);
855 }
856#endif
857
858ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;
859ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
860ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;
861ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
862
863ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
864ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
865{
866 return ( (x * 0x0802U & 0x22110U)
867 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
868}
869
870ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
871ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
872{
873 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
874 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
875 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
876 x = ( x >> 8 ) | ( x << 8);
877
878 return x;
879}
880
881ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
882ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
883{
884 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
885 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
886 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
887 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
888 x = ( x >> 16 ) | ( x << 16);
889
890 return x;
891}
892
893/* popcount64 is only available on 64 bit cpus as gcc builtin */
894/* so for this version we are lazy */
895ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
896ecb_function_ int
897ecb_popcount64 (uint64_t x)
898{
899 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
900}
901
902ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
903ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
904ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
905ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
906ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
907ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
908ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
909ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
910
911ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
912ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
913ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
914ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
915ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
916ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
917ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
918ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
919
920#if ECB_GCC_VERSION(4,3)
921 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
922 #define ecb_bswap32(x) __builtin_bswap32 (x)
923 #define ecb_bswap64(x) __builtin_bswap64 (x)
924#else
925 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
926 ecb_function_ uint16_t
927 ecb_bswap16 (uint16_t x)
928 {
929 return ecb_rotl16 (x, 8);
930 }
931
932 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
933 ecb_function_ uint32_t
934 ecb_bswap32 (uint32_t x)
935 {
936 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
937 }
938
939 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
940 ecb_function_ uint64_t
941 ecb_bswap64 (uint64_t x)
942 {
943 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
944 }
945#endif
946
947#if ECB_GCC_VERSION(4,5)
948 #define ecb_unreachable() __builtin_unreachable ()
949#else
950 /* this seems to work fine, but gcc always emits a warning for it :/ */
951 ecb_inline void ecb_unreachable (void) ecb_noreturn;
952 ecb_inline void ecb_unreachable (void) { }
953#endif
954
955/* try to tell the compiler that some condition is definitely true */
956#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
957
958ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
959ecb_inline unsigned char
960ecb_byteorder_helper (void)
961{
962 /* the union code still generates code under pressure in gcc, */
963 /* but less than using pointers, and always seems to */
964 /* successfully return a constant. */
965 /* the reason why we have this horrible preprocessor mess */
966 /* is to avoid it in all cases, at least on common architectures */
967 /* or when using a recent enough gcc version (>= 4.6) */
968#if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64
969 return 0x44;
970#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
971 return 0x44;
972#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
973 return 0x11;
974#else
975 union
976 {
977 uint32_t i;
978 uint8_t c;
979 } u = { 0x11223344 };
980 return u.c;
981#endif
982}
983
984ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
985ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
986ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
987ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
988
989#if ECB_GCC_VERSION(3,0) || ECB_C99
990 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
991#else
992 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
993#endif
994
995#if __cplusplus
996 template<typename T>
997 static inline T ecb_div_rd (T val, T div)
998 {
999 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1000 }
1001 template<typename T>
1002 static inline T ecb_div_ru (T val, T div)
1003 {
1004 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1005 }
1006#else
1007 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1008 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1009#endif
1010
1011#if ecb_cplusplus_does_not_suck
1012 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1013 template<typename T, int N>
1014 static inline int ecb_array_length (const T (&arr)[N])
1015 {
1016 return N;
1017 }
1018#else
1019 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1020#endif
1021
1022/*******************************************************************************/
1023/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1024
1025/* basically, everything uses "ieee pure-endian" floating point numbers */
1026/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1027#if 0 \
1028 || __i386 || __i386__ \
1029 || __amd64 || __amd64__ || __x86_64 || __x86_64__ \
1030 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1031 || defined __arm__ && defined __ARM_EABI__ \
1032 || defined __s390__ || defined __s390x__ \
1033 || defined __mips__ \
1034 || defined __alpha__ \
1035 || defined __hppa__ \
1036 || defined __ia64__ \
1037 || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64
1038 #define ECB_STDFP 1
1039 #include <string.h> /* for memcpy */
1040#else
1041 #define ECB_STDFP 0
1042 #include <math.h> /* for frexp*, ldexp* */
1043#endif
1044
1045#ifndef ECB_NO_LIBM
1046
1047 /* convert a float to ieee single/binary32 */
1048 ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const;
1049 ecb_function_ uint32_t
1050 ecb_float_to_binary32 (float x)
1051 {
1052 uint32_t r;
1053
1054 #if ECB_STDFP
1055 memcpy (&r, &x, 4);
1056 #else
1057 /* slow emulation, works for anything but -0 */
1058 uint32_t m;
1059 int e;
1060
1061 if (x == 0e0f ) return 0x00000000U;
1062 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1063 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1064 if (x != x ) return 0x7fbfffffU;
1065
1066 m = frexpf (x, &e) * 0x1000000U;
1067
1068 r = m & 0x80000000U;
1069
1070 if (r)
1071 m = -m;
1072
1073 if (e <= -126)
1074 {
1075 m &= 0xffffffU;
1076 m >>= (-125 - e);
1077 e = -126;
1078 }
1079
1080 r |= (e + 126) << 23;
1081 r |= m & 0x7fffffU;
1082 #endif
1083
1084 return r;
1085 }
1086
1087 /* converts an ieee single/binary32 to a float */
1088 ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const;
1089 ecb_function_ float
1090 ecb_binary32_to_float (uint32_t x)
1091 {
1092 float r;
1093
1094 #if ECB_STDFP
1095 memcpy (&r, &x, 4);
1096 #else
1097 /* emulation, only works for normals and subnormals and +0 */
1098 int neg = x >> 31;
1099 int e = (x >> 23) & 0xffU;
1100
1101 x &= 0x7fffffU;
1102
1103 if (e)
1104 x |= 0x800000U;
1105 else
1106 e = 1;
1107
1108 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1109 r = ldexpf (x * (0.5f / 0x800000U), e - 126);
1110
1111 r = neg ? -r : r;
1112 #endif
1113
1114 return r;
1115 }
1116
1117 /* convert a double to ieee double/binary64 */
1118 ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const;
1119 ecb_function_ uint64_t
1120 ecb_double_to_binary64 (double x)
1121 {
1122 uint64_t r;
1123
1124 #if ECB_STDFP
1125 memcpy (&r, &x, 8);
1126 #else
1127 /* slow emulation, works for anything but -0 */
1128 uint64_t m;
1129 int e;
1130
1131 if (x == 0e0 ) return 0x0000000000000000U;
1132 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1133 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1134 if (x != x ) return 0X7ff7ffffffffffffU;
1135
1136 m = frexp (x, &e) * 0x20000000000000U;
1137
1138 r = m & 0x8000000000000000;;
1139
1140 if (r)
1141 m = -m;
1142
1143 if (e <= -1022)
1144 {
1145 m &= 0x1fffffffffffffU;
1146 m >>= (-1021 - e);
1147 e = -1022;
1148 }
1149
1150 r |= ((uint64_t)(e + 1022)) << 52;
1151 r |= m & 0xfffffffffffffU;
1152 #endif
1153
1154 return r;
1155 }
1156
1157 /* converts an ieee double/binary64 to a double */
1158 ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const;
1159 ecb_function_ double
1160 ecb_binary64_to_double (uint64_t x)
1161 {
1162 double r;
1163
1164 #if ECB_STDFP
1165 memcpy (&r, &x, 8);
1166 #else
1167 /* emulation, only works for normals and subnormals and +0 */
1168 int neg = x >> 63;
1169 int e = (x >> 52) & 0x7ffU;
1170
1171 x &= 0xfffffffffffffU;
1172
1173 if (e)
1174 x |= 0x10000000000000U;
1175 else
1176 e = 1;
1177
1178 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1179 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1180
1181 r = neg ? -r : r;
1182 #endif
1183
1184 return r;
1185 }
1186
1187#endif
1188
1189#endif
1190
1191/* ECB.H END */
1192
1193#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1194/* if your architecture doesn't need memory fences, e.g. because it is
1195 * single-cpu/core, or if you use libev in a project that doesn't use libev
1196 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1197 * libev, in which cases the memory fences become nops.
1198 * alternatively, you can remove this #error and link against libpthread,
1199 * which will then provide the memory fences.
1200 */
1201# error "memory fences not defined for your architecture, please report"
1202#endif
1203
1204#ifndef ECB_MEMORY_FENCE
1205# define ECB_MEMORY_FENCE do { } while (0)
1206# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1207# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1208#endif
1209
1210#define expect_false(cond) ecb_expect_false (cond)
1211#define expect_true(cond) ecb_expect_true (cond)
1212#define noinline ecb_noinline
1213
476#define inline_size static inline 1214#define inline_size ecb_inline
477 1215
478#if EV_FEATURE_CODE 1216#if EV_FEATURE_CODE
479# define inline_speed static inline 1217# define inline_speed ecb_inline
480#else 1218#else
481# define inline_speed static noinline 1219# define inline_speed static noinline
482#endif 1220#endif
483 1221
484#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1222#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
… …
523# include "ev_win32.c" 1261# include "ev_win32.c"
524#endif 1262#endif
525 1263
526/*****************************************************************************/ 1264/*****************************************************************************/
527 1265
1266/* define a suitable floor function (only used by periodics atm) */
1267
1268#if EV_USE_FLOOR
1269# include <math.h>
1270# define ev_floor(v) floor (v)
1271#else
1272
1273#include <float.h>
1274
1275/* a floor() replacement function, should be independent of ev_tstamp type */
1276static ev_tstamp noinline
1277ev_floor (ev_tstamp v)
1278{
1279 /* the choice of shift factor is not terribly important */
1280#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1281 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1282#else
1283 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1284#endif
1285
1286 /* argument too large for an unsigned long? */
1287 if (expect_false (v >= shift))
1288 {
1289 ev_tstamp f;
1290
1291 if (v == v - 1.)
1292 return v; /* very large number */
1293
1294 f = shift * ev_floor (v * (1. / shift));
1295 return f + ev_floor (v - f);
1296 }
1297
1298 /* special treatment for negative args? */
1299 if (expect_false (v < 0.))
1300 {
1301 ev_tstamp f = -ev_floor (-v);
1302
1303 return f - (f == v ? 0 : 1);
1304 }
1305
1306 /* fits into an unsigned long */
1307 return (unsigned long)v;
1308}
1309
1310#endif
1311
1312/*****************************************************************************/
1313
528#ifdef __linux 1314#ifdef __linux
529# include <sys/utsname.h> 1315# include <sys/utsname.h>
530#endif 1316#endif
531 1317
532static unsigned int noinline 1318static unsigned int noinline ecb_cold
533ev_linux_version (void) 1319ev_linux_version (void)
534{ 1320{
535#ifdef __linux 1321#ifdef __linux
536 unsigned int v = 0; 1322 unsigned int v = 0;
537 struct utsname buf; 1323 struct utsname buf;
… …
566} 1352}
567 1353
568/*****************************************************************************/ 1354/*****************************************************************************/
569 1355
570#if EV_AVOID_STDIO 1356#if EV_AVOID_STDIO
571static void noinline 1357static void noinline ecb_cold
572ev_printerr (const char *msg) 1358ev_printerr (const char *msg)
573{ 1359{
574 write (STDERR_FILENO, msg, strlen (msg)); 1360 write (STDERR_FILENO, msg, strlen (msg));
575} 1361}
576#endif 1362#endif
577 1363
578static void (*syserr_cb)(const char *msg); 1364static void (*syserr_cb)(const char *msg) EV_THROW;
579 1365
580void 1366void ecb_cold
581ev_set_syserr_cb (void (*cb)(const char *msg)) 1367ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
582{ 1368{
583 syserr_cb = cb; 1369 syserr_cb = cb;
584} 1370}
585 1371
586static void noinline 1372static void noinline ecb_cold
587ev_syserr (const char *msg) 1373ev_syserr (const char *msg)
588{ 1374{
589 if (!msg) 1375 if (!msg)
590 msg = "(libev) system error"; 1376 msg = "(libev) system error";
591 1377
… …
604 abort (); 1390 abort ();
605 } 1391 }
606} 1392}
607 1393
608static void * 1394static void *
609ev_realloc_emul (void *ptr, long size) 1395ev_realloc_emul (void *ptr, long size) EV_THROW
610{ 1396{
611#if __GLIBC__
612 return realloc (ptr, size);
613#else
614 /* some systems, notably openbsd and darwin, fail to properly 1397 /* some systems, notably openbsd and darwin, fail to properly
615 * implement realloc (x, 0) (as required by both ansi c-89 and 1398 * implement realloc (x, 0) (as required by both ansi c-89 and
616 * the single unix specification, so work around them here. 1399 * the single unix specification, so work around them here.
1400 * recently, also (at least) fedora and debian started breaking it,
1401 * despite documenting it otherwise.
617 */ 1402 */
618 1403
619 if (size) 1404 if (size)
620 return realloc (ptr, size); 1405 return realloc (ptr, size);
621 1406
622 free (ptr); 1407 free (ptr);
623 return 0; 1408 return 0;
624#endif
625} 1409}
626 1410
627static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1411static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
628 1412
629void 1413void ecb_cold
630ev_set_allocator (void *(*cb)(void *ptr, long size)) 1414ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
631{ 1415{
632 alloc = cb; 1416 alloc = cb;
633} 1417}
634 1418
635inline_speed void * 1419inline_speed void *
… …
723 #undef VAR 1507 #undef VAR
724 }; 1508 };
725 #include "ev_wrap.h" 1509 #include "ev_wrap.h"
726 1510
727 static struct ev_loop default_loop_struct; 1511 static struct ev_loop default_loop_struct;
728 struct ev_loop *ev_default_loop_ptr; 1512 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
729 1513
730#else 1514#else
731 1515
732 ev_tstamp ev_rt_now; 1516 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
733 #define VAR(name,decl) static decl; 1517 #define VAR(name,decl) static decl;
734 #include "ev_vars.h" 1518 #include "ev_vars.h"
735 #undef VAR 1519 #undef VAR
736 1520
737 static int ev_default_loop_ptr; 1521 static int ev_default_loop_ptr;
… …
752 1536
753/*****************************************************************************/ 1537/*****************************************************************************/
754 1538
755#ifndef EV_HAVE_EV_TIME 1539#ifndef EV_HAVE_EV_TIME
756ev_tstamp 1540ev_tstamp
757ev_time (void) 1541ev_time (void) EV_THROW
758{ 1542{
759#if EV_USE_REALTIME 1543#if EV_USE_REALTIME
760 if (expect_true (have_realtime)) 1544 if (expect_true (have_realtime))
761 { 1545 {
762 struct timespec ts; 1546 struct timespec ts;
… …
786 return ev_time (); 1570 return ev_time ();
787} 1571}
788 1572
789#if EV_MULTIPLICITY 1573#if EV_MULTIPLICITY
790ev_tstamp 1574ev_tstamp
791ev_now (EV_P) 1575ev_now (EV_P) EV_THROW
792{ 1576{
793 return ev_rt_now; 1577 return ev_rt_now;
794} 1578}
795#endif 1579#endif
796 1580
797void 1581void
798ev_sleep (ev_tstamp delay) 1582ev_sleep (ev_tstamp delay) EV_THROW
799{ 1583{
800 if (delay > 0.) 1584 if (delay > 0.)
801 { 1585 {
802#if EV_USE_NANOSLEEP 1586#if EV_USE_NANOSLEEP
803 struct timespec ts; 1587 struct timespec ts;
804 1588
805 EV_TS_SET (ts, delay); 1589 EV_TS_SET (ts, delay);
806 nanosleep (&ts, 0); 1590 nanosleep (&ts, 0);
807#elif defined(_WIN32) 1591#elif defined _WIN32
808 Sleep ((unsigned long)(delay * 1e3)); 1592 Sleep ((unsigned long)(delay * 1e3));
809#else 1593#else
810 struct timeval tv; 1594 struct timeval tv;
811 1595
812 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1596 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
… …
816 select (0, 0, 0, 0, &tv); 1600 select (0, 0, 0, 0, &tv);
817#endif 1601#endif
818 } 1602 }
819} 1603}
820 1604
821inline_speed int
822ev_timeout_to_ms (ev_tstamp timeout)
823{
824 int ms = timeout * 1000. + .999999;
825
826 return expect_true (ms) ? ms : timeout < 1e-6 ? 0 : 1;
827}
828
829/*****************************************************************************/ 1605/*****************************************************************************/
830 1606
831#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1607#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
832 1608
833/* find a suitable new size for the given array, */ 1609/* find a suitable new size for the given array, */
… …
839 1615
840 do 1616 do
841 ncur <<= 1; 1617 ncur <<= 1;
842 while (cnt > ncur); 1618 while (cnt > ncur);
843 1619
844 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1620 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
845 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1621 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
846 { 1622 {
847 ncur *= elem; 1623 ncur *= elem;
848 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1624 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
849 ncur = ncur - sizeof (void *) * 4; 1625 ncur = ncur - sizeof (void *) * 4;
… …
851 } 1627 }
852 1628
853 return ncur; 1629 return ncur;
854} 1630}
855 1631
856static noinline void * 1632static void * noinline ecb_cold
857array_realloc (int elem, void *base, int *cur, int cnt) 1633array_realloc (int elem, void *base, int *cur, int cnt)
858{ 1634{
859 *cur = array_nextsize (elem, *cur, cnt); 1635 *cur = array_nextsize (elem, *cur, cnt);
860 return ev_realloc (base, elem * *cur); 1636 return ev_realloc (base, elem * *cur);
861} 1637}
… …
864 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1640 memset ((void *)(base), 0, sizeof (*(base)) * (count))
865 1641
866#define array_needsize(type,base,cur,cnt,init) \ 1642#define array_needsize(type,base,cur,cnt,init) \
867 if (expect_false ((cnt) > (cur))) \ 1643 if (expect_false ((cnt) > (cur))) \
868 { \ 1644 { \
869 int ocur_ = (cur); \ 1645 int ecb_unused ocur_ = (cur); \
870 (base) = (type *)array_realloc \ 1646 (base) = (type *)array_realloc \
871 (sizeof (type), (base), &(cur), (cnt)); \ 1647 (sizeof (type), (base), &(cur), (cnt)); \
872 init ((base) + (ocur_), (cur) - ocur_); \ 1648 init ((base) + (ocur_), (cur) - ocur_); \
873 } 1649 }
874 1650
… …
892pendingcb (EV_P_ ev_prepare *w, int revents) 1668pendingcb (EV_P_ ev_prepare *w, int revents)
893{ 1669{
894} 1670}
895 1671
896void noinline 1672void noinline
897ev_feed_event (EV_P_ void *w, int revents) 1673ev_feed_event (EV_P_ void *w, int revents) EV_THROW
898{ 1674{
899 W w_ = (W)w; 1675 W w_ = (W)w;
900 int pri = ABSPRI (w_); 1676 int pri = ABSPRI (w_);
901 1677
902 if (expect_false (w_->pending)) 1678 if (expect_false (w_->pending))
… …
906 w_->pending = ++pendingcnt [pri]; 1682 w_->pending = ++pendingcnt [pri];
907 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1683 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
908 pendings [pri][w_->pending - 1].w = w_; 1684 pendings [pri][w_->pending - 1].w = w_;
909 pendings [pri][w_->pending - 1].events = revents; 1685 pendings [pri][w_->pending - 1].events = revents;
910 } 1686 }
1687
1688 pendingpri = NUMPRI - 1;
911} 1689}
912 1690
913inline_speed void 1691inline_speed void
914feed_reverse (EV_P_ W w) 1692feed_reverse (EV_P_ W w)
915{ 1693{
… …
961 if (expect_true (!anfd->reify)) 1739 if (expect_true (!anfd->reify))
962 fd_event_nocheck (EV_A_ fd, revents); 1740 fd_event_nocheck (EV_A_ fd, revents);
963} 1741}
964 1742
965void 1743void
966ev_feed_fd_event (EV_P_ int fd, int revents) 1744ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
967{ 1745{
968 if (fd >= 0 && fd < anfdmax) 1746 if (fd >= 0 && fd < anfdmax)
969 fd_event_nocheck (EV_A_ fd, revents); 1747 fd_event_nocheck (EV_A_ fd, revents);
970} 1748}
971 1749
… …
974inline_size void 1752inline_size void
975fd_reify (EV_P) 1753fd_reify (EV_P)
976{ 1754{
977 int i; 1755 int i;
978 1756
1757#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1758 for (i = 0; i < fdchangecnt; ++i)
1759 {
1760 int fd = fdchanges [i];
1761 ANFD *anfd = anfds + fd;
1762
1763 if (anfd->reify & EV__IOFDSET && anfd->head)
1764 {
1765 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1766
1767 if (handle != anfd->handle)
1768 {
1769 unsigned long arg;
1770
1771 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1772
1773 /* handle changed, but fd didn't - we need to do it in two steps */
1774 backend_modify (EV_A_ fd, anfd->events, 0);
1775 anfd->events = 0;
1776 anfd->handle = handle;
1777 }
1778 }
1779 }
1780#endif
1781
979 for (i = 0; i < fdchangecnt; ++i) 1782 for (i = 0; i < fdchangecnt; ++i)
980 { 1783 {
981 int fd = fdchanges [i]; 1784 int fd = fdchanges [i];
982 ANFD *anfd = anfds + fd; 1785 ANFD *anfd = anfds + fd;
983 ev_io *w; 1786 ev_io *w;
… …
985 unsigned char o_events = anfd->events; 1788 unsigned char o_events = anfd->events;
986 unsigned char o_reify = anfd->reify; 1789 unsigned char o_reify = anfd->reify;
987 1790
988 anfd->reify = 0; 1791 anfd->reify = 0;
989 1792
990#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
991 if (o_reify & EV__IOFDSET)
992 {
993 unsigned long arg;
994 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
995 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
996 printf ("oi %d %x\n", fd, anfd->handle);//D
997 }
998#endif
999
1000 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 1793 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
1001 { 1794 {
1002 anfd->events = 0; 1795 anfd->events = 0;
1003 1796
1004 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1797 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
1029 fdchanges [fdchangecnt - 1] = fd; 1822 fdchanges [fdchangecnt - 1] = fd;
1030 } 1823 }
1031} 1824}
1032 1825
1033/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1826/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1034inline_speed void 1827inline_speed void ecb_cold
1035fd_kill (EV_P_ int fd) 1828fd_kill (EV_P_ int fd)
1036{ 1829{
1037 ev_io *w; 1830 ev_io *w;
1038 1831
1039 while ((w = (ev_io *)anfds [fd].head)) 1832 while ((w = (ev_io *)anfds [fd].head))
… …
1042 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1835 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1043 } 1836 }
1044} 1837}
1045 1838
1046/* check whether the given fd is actually valid, for error recovery */ 1839/* check whether the given fd is actually valid, for error recovery */
1047inline_size int 1840inline_size int ecb_cold
1048fd_valid (int fd) 1841fd_valid (int fd)
1049{ 1842{
1050#ifdef _WIN32 1843#ifdef _WIN32
1051 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 1844 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1052#else 1845#else
1053 return fcntl (fd, F_GETFD) != -1; 1846 return fcntl (fd, F_GETFD) != -1;
1054#endif 1847#endif
1055} 1848}
1056 1849
1057/* called on EBADF to verify fds */ 1850/* called on EBADF to verify fds */
1058static void noinline 1851static void noinline ecb_cold
1059fd_ebadf (EV_P) 1852fd_ebadf (EV_P)
1060{ 1853{
1061 int fd; 1854 int fd;
1062 1855
1063 for (fd = 0; fd < anfdmax; ++fd) 1856 for (fd = 0; fd < anfdmax; ++fd)
… …
1065 if (!fd_valid (fd) && errno == EBADF) 1858 if (!fd_valid (fd) && errno == EBADF)
1066 fd_kill (EV_A_ fd); 1859 fd_kill (EV_A_ fd);
1067} 1860}
1068 1861
1069/* called on ENOMEM in select/poll to kill some fds and retry */ 1862/* called on ENOMEM in select/poll to kill some fds and retry */
1070static void noinline 1863static void noinline ecb_cold
1071fd_enomem (EV_P) 1864fd_enomem (EV_P)
1072{ 1865{
1073 int fd; 1866 int fd;
1074 1867
1075 for (fd = anfdmax; fd--; ) 1868 for (fd = anfdmax; fd--; )
… …
1270 2063
1271/*****************************************************************************/ 2064/*****************************************************************************/
1272 2065
1273#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2066#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1274 2067
1275static void noinline 2068static void noinline ecb_cold
1276evpipe_init (EV_P) 2069evpipe_init (EV_P)
1277{ 2070{
1278 if (!ev_is_active (&pipe_w)) 2071 if (!ev_is_active (&pipe_w))
1279 { 2072 {
2073 int fds [2];
2074
1280# if EV_USE_EVENTFD 2075# if EV_USE_EVENTFD
2076 fds [0] = -1;
1281 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2077 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1282 if (evfd < 0 && errno == EINVAL) 2078 if (fds [1] < 0 && errno == EINVAL)
1283 evfd = eventfd (0, 0); 2079 fds [1] = eventfd (0, 0);
1284 2080
1285 if (evfd >= 0) 2081 if (fds [1] < 0)
2082# endif
1286 { 2083 {
2084 while (pipe (fds))
2085 ev_syserr ("(libev) error creating signal/async pipe");
2086
2087 fd_intern (fds [0]);
2088 }
2089
2090 fd_intern (fds [1]);
2091
1287 evpipe [0] = -1; 2092 evpipe [0] = fds [0];
1288 fd_intern (evfd); /* doing it twice doesn't hurt */ 2093
1289 ev_io_set (&pipe_w, evfd, EV_READ); 2094 if (evpipe [1] < 0)
2095 evpipe [1] = fds [1]; /* first call, set write fd */
2096 else
2097 {
2098 /* on subsequent calls, do not change evpipe [1] */
2099 /* so that evpipe_write can always rely on its value. */
2100 /* this branch does not do anything sensible on windows, */
2101 /* so must not be executed on windows */
2102
2103 dup2 (fds [1], evpipe [1]);
2104 close (fds [1]);
2105 }
2106
2107 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2108 ev_io_start (EV_A_ &pipe_w);
2109 ev_unref (EV_A); /* watcher should not keep loop alive */
2110 }
2111}
2112
2113inline_speed void
2114evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2115{
2116 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2117
2118 if (expect_true (*flag))
2119 return;
2120
2121 *flag = 1;
2122 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2123
2124 pipe_write_skipped = 1;
2125
2126 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2127
2128 if (pipe_write_wanted)
2129 {
2130 int old_errno;
2131
2132 pipe_write_skipped = 0;
2133 ECB_MEMORY_FENCE_RELEASE;
2134
2135 old_errno = errno; /* save errno because write will clobber it */
2136
2137#if EV_USE_EVENTFD
2138 if (evpipe [0] < 0)
2139 {
2140 uint64_t counter = 1;
2141 write (evpipe [1], &counter, sizeof (uint64_t));
1290 } 2142 }
1291 else 2143 else
1292# endif 2144#endif
1293 { 2145 {
1294 while (pipe (evpipe)) 2146#ifdef _WIN32
1295 ev_syserr ("(libev) error creating signal/async pipe"); 2147 WSABUF buf;
1296 2148 DWORD sent;
1297 fd_intern (evpipe [0]); 2149 buf.buf = &buf;
1298 fd_intern (evpipe [1]); 2150 buf.len = 1;
1299 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2151 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2152#else
2153 write (evpipe [1], &(evpipe [1]), 1);
2154#endif
1300 } 2155 }
1301
1302 ev_io_start (EV_A_ &pipe_w);
1303 ev_unref (EV_A); /* watcher should not keep loop alive */
1304 }
1305}
1306
1307inline_size void
1308evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1309{
1310 if (!*flag)
1311 {
1312 int old_errno = errno; /* save errno because write might clobber it */
1313 char dummy;
1314
1315 *flag = 1;
1316
1317#if EV_USE_EVENTFD
1318 if (evfd >= 0)
1319 {
1320 uint64_t counter = 1;
1321 write (evfd, &counter, sizeof (uint64_t));
1322 }
1323 else
1324#endif
1325 /* win32 people keep sending patches that change this write() to send() */
1326 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1327 /* so when you think this write should be a send instead, please find out */
1328 /* where your send() is from - it's definitely not the microsoft send, and */
1329 /* tell me. thank you. */
1330 write (evpipe [1], &dummy, 1);
1331 2156
1332 errno = old_errno; 2157 errno = old_errno;
1333 } 2158 }
1334} 2159}
1335 2160
… …
1338static void 2163static void
1339pipecb (EV_P_ ev_io *iow, int revents) 2164pipecb (EV_P_ ev_io *iow, int revents)
1340{ 2165{
1341 int i; 2166 int i;
1342 2167
2168 if (revents & EV_READ)
2169 {
1343#if EV_USE_EVENTFD 2170#if EV_USE_EVENTFD
1344 if (evfd >= 0) 2171 if (evpipe [0] < 0)
1345 { 2172 {
1346 uint64_t counter; 2173 uint64_t counter;
1347 read (evfd, &counter, sizeof (uint64_t)); 2174 read (evpipe [1], &counter, sizeof (uint64_t));
1348 } 2175 }
1349 else 2176 else
1350#endif 2177#endif
1351 { 2178 {
1352 char dummy; 2179 char dummy[4];
1353 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2180#ifdef _WIN32
2181 WSABUF buf;
2182 DWORD recvd;
2183 DWORD flags = 0;
2184 buf.buf = dummy;
2185 buf.len = sizeof (dummy);
2186 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2187#else
1354 read (evpipe [0], &dummy, 1); 2188 read (evpipe [0], &dummy, sizeof (dummy));
2189#endif
2190 }
1355 } 2191 }
2192
2193 pipe_write_skipped = 0;
2194
2195 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1356 2196
1357#if EV_SIGNAL_ENABLE 2197#if EV_SIGNAL_ENABLE
1358 if (sig_pending) 2198 if (sig_pending)
1359 { 2199 {
1360 sig_pending = 0; 2200 sig_pending = 0;
2201
2202 ECB_MEMORY_FENCE;
1361 2203
1362 for (i = EV_NSIG - 1; i--; ) 2204 for (i = EV_NSIG - 1; i--; )
1363 if (expect_false (signals [i].pending)) 2205 if (expect_false (signals [i].pending))
1364 ev_feed_signal_event (EV_A_ i + 1); 2206 ev_feed_signal_event (EV_A_ i + 1);
1365 } 2207 }
… …
1367 2209
1368#if EV_ASYNC_ENABLE 2210#if EV_ASYNC_ENABLE
1369 if (async_pending) 2211 if (async_pending)
1370 { 2212 {
1371 async_pending = 0; 2213 async_pending = 0;
2214
2215 ECB_MEMORY_FENCE;
1372 2216
1373 for (i = asynccnt; i--; ) 2217 for (i = asynccnt; i--; )
1374 if (asyncs [i]->sent) 2218 if (asyncs [i]->sent)
1375 { 2219 {
1376 asyncs [i]->sent = 0; 2220 asyncs [i]->sent = 0;
2221 ECB_MEMORY_FENCE_RELEASE;
1377 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2222 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1378 } 2223 }
1379 } 2224 }
1380#endif 2225#endif
1381} 2226}
1382 2227
1383/*****************************************************************************/ 2228/*****************************************************************************/
1384 2229
1385void 2230void
1386ev_feed_signal (int signum) 2231ev_feed_signal (int signum) EV_THROW
1387{ 2232{
1388#if EV_MULTIPLICITY 2233#if EV_MULTIPLICITY
2234 ECB_MEMORY_FENCE_ACQUIRE;
1389 EV_P = signals [signum - 1].loop; 2235 EV_P = signals [signum - 1].loop;
1390 2236
1391 if (!EV_A) 2237 if (!EV_A)
1392 return; 2238 return;
1393#endif 2239#endif
… …
1405 2251
1406 ev_feed_signal (signum); 2252 ev_feed_signal (signum);
1407} 2253}
1408 2254
1409void noinline 2255void noinline
1410ev_feed_signal_event (EV_P_ int signum) 2256ev_feed_signal_event (EV_P_ int signum) EV_THROW
1411{ 2257{
1412 WL w; 2258 WL w;
1413 2259
1414 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2260 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1415 return; 2261 return;
1416 2262
1417 --signum; 2263 --signum;
1418 2264
1419#if EV_MULTIPLICITY 2265#if EV_MULTIPLICITY
… …
1423 if (expect_false (signals [signum].loop != EV_A)) 2269 if (expect_false (signals [signum].loop != EV_A))
1424 return; 2270 return;
1425#endif 2271#endif
1426 2272
1427 signals [signum].pending = 0; 2273 signals [signum].pending = 0;
2274 ECB_MEMORY_FENCE_RELEASE;
1428 2275
1429 for (w = signals [signum].head; w; w = w->next) 2276 for (w = signals [signum].head; w; w = w->next)
1430 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2277 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1431} 2278}
1432 2279
… …
1530#endif 2377#endif
1531#if EV_USE_SELECT 2378#if EV_USE_SELECT
1532# include "ev_select.c" 2379# include "ev_select.c"
1533#endif 2380#endif
1534 2381
1535int 2382int ecb_cold
1536ev_version_major (void) 2383ev_version_major (void) EV_THROW
1537{ 2384{
1538 return EV_VERSION_MAJOR; 2385 return EV_VERSION_MAJOR;
1539} 2386}
1540 2387
1541int 2388int ecb_cold
1542ev_version_minor (void) 2389ev_version_minor (void) EV_THROW
1543{ 2390{
1544 return EV_VERSION_MINOR; 2391 return EV_VERSION_MINOR;
1545} 2392}
1546 2393
1547/* return true if we are running with elevated privileges and should ignore env variables */ 2394/* return true if we are running with elevated privileges and should ignore env variables */
1548int inline_size 2395int inline_size ecb_cold
1549enable_secure (void) 2396enable_secure (void)
1550{ 2397{
1551#ifdef _WIN32 2398#ifdef _WIN32
1552 return 0; 2399 return 0;
1553#else 2400#else
1554 return getuid () != geteuid () 2401 return getuid () != geteuid ()
1555 || getgid () != getegid (); 2402 || getgid () != getegid ();
1556#endif 2403#endif
1557} 2404}
1558 2405
1559unsigned int 2406unsigned int ecb_cold
1560ev_supported_backends (void) 2407ev_supported_backends (void) EV_THROW
1561{ 2408{
1562 unsigned int flags = 0; 2409 unsigned int flags = 0;
1563 2410
1564 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2411 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1565 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2412 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1568 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2415 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1569 2416
1570 return flags; 2417 return flags;
1571} 2418}
1572 2419
1573unsigned int 2420unsigned int ecb_cold
1574ev_recommended_backends (void) 2421ev_recommended_backends (void) EV_THROW
1575{ 2422{
1576 unsigned int flags = ev_supported_backends (); 2423 unsigned int flags = ev_supported_backends ();
1577 2424
1578#ifndef __NetBSD__ 2425#ifndef __NetBSD__
1579 /* kqueue is borked on everything but netbsd apparently */ 2426 /* kqueue is borked on everything but netbsd apparently */
… …
1590#endif 2437#endif
1591 2438
1592 return flags; 2439 return flags;
1593} 2440}
1594 2441
1595unsigned int 2442unsigned int ecb_cold
1596ev_embeddable_backends (void) 2443ev_embeddable_backends (void) EV_THROW
1597{ 2444{
1598 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2445 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1599 2446
1600 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2447 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1601 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 2448 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
… …
1603 2450
1604 return flags; 2451 return flags;
1605} 2452}
1606 2453
1607unsigned int 2454unsigned int
1608ev_backend (EV_P) 2455ev_backend (EV_P) EV_THROW
1609{ 2456{
1610 return backend; 2457 return backend;
1611} 2458}
1612 2459
1613#if EV_FEATURE_API 2460#if EV_FEATURE_API
1614unsigned int 2461unsigned int
1615ev_iteration (EV_P) 2462ev_iteration (EV_P) EV_THROW
1616{ 2463{
1617 return loop_count; 2464 return loop_count;
1618} 2465}
1619 2466
1620unsigned int 2467unsigned int
1621ev_depth (EV_P) 2468ev_depth (EV_P) EV_THROW
1622{ 2469{
1623 return loop_depth; 2470 return loop_depth;
1624} 2471}
1625 2472
1626void 2473void
1627ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2474ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1628{ 2475{
1629 io_blocktime = interval; 2476 io_blocktime = interval;
1630} 2477}
1631 2478
1632void 2479void
1633ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2480ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1634{ 2481{
1635 timeout_blocktime = interval; 2482 timeout_blocktime = interval;
1636} 2483}
1637 2484
1638void 2485void
1639ev_set_userdata (EV_P_ void *data) 2486ev_set_userdata (EV_P_ void *data) EV_THROW
1640{ 2487{
1641 userdata = data; 2488 userdata = data;
1642} 2489}
1643 2490
1644void * 2491void *
1645ev_userdata (EV_P) 2492ev_userdata (EV_P) EV_THROW
1646{ 2493{
1647 return userdata; 2494 return userdata;
1648} 2495}
1649 2496
2497void
1650void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2498ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
1651{ 2499{
1652 invoke_cb = invoke_pending_cb; 2500 invoke_cb = invoke_pending_cb;
1653} 2501}
1654 2502
2503void
1655void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2504ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
1656{ 2505{
1657 release_cb = release; 2506 release_cb = release;
1658 acquire_cb = acquire; 2507 acquire_cb = acquire;
1659} 2508}
1660#endif 2509#endif
1661 2510
1662/* initialise a loop structure, must be zero-initialised */ 2511/* initialise a loop structure, must be zero-initialised */
1663static void noinline 2512static void noinline ecb_cold
1664loop_init (EV_P_ unsigned int flags) 2513loop_init (EV_P_ unsigned int flags) EV_THROW
1665{ 2514{
1666 if (!backend) 2515 if (!backend)
1667 { 2516 {
1668 origflags = flags; 2517 origflags = flags;
1669 2518
… …
1696 if (!(flags & EVFLAG_NOENV) 2545 if (!(flags & EVFLAG_NOENV)
1697 && !enable_secure () 2546 && !enable_secure ()
1698 && getenv ("LIBEV_FLAGS")) 2547 && getenv ("LIBEV_FLAGS"))
1699 flags = atoi (getenv ("LIBEV_FLAGS")); 2548 flags = atoi (getenv ("LIBEV_FLAGS"));
1700 2549
1701 ev_rt_now = ev_time (); 2550 ev_rt_now = ev_time ();
1702 mn_now = get_clock (); 2551 mn_now = get_clock ();
1703 now_floor = mn_now; 2552 now_floor = mn_now;
1704 rtmn_diff = ev_rt_now - mn_now; 2553 rtmn_diff = ev_rt_now - mn_now;
1705#if EV_FEATURE_API 2554#if EV_FEATURE_API
1706 invoke_cb = ev_invoke_pending; 2555 invoke_cb = ev_invoke_pending;
1707#endif 2556#endif
1708 2557
1709 io_blocktime = 0.; 2558 io_blocktime = 0.;
1710 timeout_blocktime = 0.; 2559 timeout_blocktime = 0.;
1711 backend = 0; 2560 backend = 0;
1712 backend_fd = -1; 2561 backend_fd = -1;
1713 sig_pending = 0; 2562 sig_pending = 0;
1714#if EV_ASYNC_ENABLE 2563#if EV_ASYNC_ENABLE
1715 async_pending = 0; 2564 async_pending = 0;
1716#endif 2565#endif
2566 pipe_write_skipped = 0;
2567 pipe_write_wanted = 0;
2568 evpipe [0] = -1;
2569 evpipe [1] = -1;
1717#if EV_USE_INOTIFY 2570#if EV_USE_INOTIFY
1718 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2571 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1719#endif 2572#endif
1720#if EV_USE_SIGNALFD 2573#if EV_USE_SIGNALFD
1721 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2574 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1722#endif 2575#endif
1723 2576
1724 if (!(flags & EVBACKEND_MASK)) 2577 if (!(flags & EVBACKEND_MASK))
1725 flags |= ev_recommended_backends (); 2578 flags |= ev_recommended_backends ();
1726 2579
… …
1751#endif 2604#endif
1752 } 2605 }
1753} 2606}
1754 2607
1755/* free up a loop structure */ 2608/* free up a loop structure */
1756void 2609void ecb_cold
1757ev_loop_destroy (EV_P) 2610ev_loop_destroy (EV_P)
1758{ 2611{
1759 int i; 2612 int i;
1760 2613
1761#if EV_MULTIPLICITY 2614#if EV_MULTIPLICITY
… …
1772 EV_INVOKE_PENDING; 2625 EV_INVOKE_PENDING;
1773 } 2626 }
1774#endif 2627#endif
1775 2628
1776#if EV_CHILD_ENABLE 2629#if EV_CHILD_ENABLE
1777 if (ev_is_active (&childev)) 2630 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
1778 { 2631 {
1779 ev_ref (EV_A); /* child watcher */ 2632 ev_ref (EV_A); /* child watcher */
1780 ev_signal_stop (EV_A_ &childev); 2633 ev_signal_stop (EV_A_ &childev);
1781 } 2634 }
1782#endif 2635#endif
… …
1784 if (ev_is_active (&pipe_w)) 2637 if (ev_is_active (&pipe_w))
1785 { 2638 {
1786 /*ev_ref (EV_A);*/ 2639 /*ev_ref (EV_A);*/
1787 /*ev_io_stop (EV_A_ &pipe_w);*/ 2640 /*ev_io_stop (EV_A_ &pipe_w);*/
1788 2641
1789#if EV_USE_EVENTFD
1790 if (evfd >= 0)
1791 close (evfd);
1792#endif
1793
1794 if (evpipe [0] >= 0)
1795 {
1796 EV_WIN32_CLOSE_FD (evpipe [0]); 2642 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1797 EV_WIN32_CLOSE_FD (evpipe [1]); 2643 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1798 }
1799 } 2644 }
1800 2645
1801#if EV_USE_SIGNALFD 2646#if EV_USE_SIGNALFD
1802 if (ev_is_active (&sigfd_w)) 2647 if (ev_is_active (&sigfd_w))
1803 close (sigfd); 2648 close (sigfd);
… …
1889#endif 2734#endif
1890#if EV_USE_INOTIFY 2735#if EV_USE_INOTIFY
1891 infy_fork (EV_A); 2736 infy_fork (EV_A);
1892#endif 2737#endif
1893 2738
2739#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1894 if (ev_is_active (&pipe_w)) 2740 if (ev_is_active (&pipe_w))
1895 { 2741 {
1896 /* this "locks" the handlers against writing to the pipe */ 2742 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1897 /* while we modify the fd vars */
1898 sig_pending = 1;
1899#if EV_ASYNC_ENABLE
1900 async_pending = 1;
1901#endif
1902 2743
1903 ev_ref (EV_A); 2744 ev_ref (EV_A);
1904 ev_io_stop (EV_A_ &pipe_w); 2745 ev_io_stop (EV_A_ &pipe_w);
1905 2746
1906#if EV_USE_EVENTFD
1907 if (evfd >= 0)
1908 close (evfd);
1909#endif
1910
1911 if (evpipe [0] >= 0) 2747 if (evpipe [0] >= 0)
1912 {
1913 EV_WIN32_CLOSE_FD (evpipe [0]); 2748 EV_WIN32_CLOSE_FD (evpipe [0]);
1914 EV_WIN32_CLOSE_FD (evpipe [1]);
1915 }
1916 2749
1917#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1918 evpipe_init (EV_A); 2750 evpipe_init (EV_A);
1919 /* now iterate over everything, in case we missed something */ 2751 /* iterate over everything, in case we missed something before */
1920 pipecb (EV_A_ &pipe_w, EV_READ); 2752 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1921#endif
1922 } 2753 }
2754#endif
1923 2755
1924 postfork = 0; 2756 postfork = 0;
1925} 2757}
1926 2758
1927#if EV_MULTIPLICITY 2759#if EV_MULTIPLICITY
1928 2760
1929struct ev_loop * 2761struct ev_loop * ecb_cold
1930ev_loop_new (unsigned int flags) 2762ev_loop_new (unsigned int flags) EV_THROW
1931{ 2763{
1932 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2764 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1933 2765
1934 memset (EV_A, 0, sizeof (struct ev_loop)); 2766 memset (EV_A, 0, sizeof (struct ev_loop));
1935 loop_init (EV_A_ flags); 2767 loop_init (EV_A_ flags);
… …
1942} 2774}
1943 2775
1944#endif /* multiplicity */ 2776#endif /* multiplicity */
1945 2777
1946#if EV_VERIFY 2778#if EV_VERIFY
1947static void noinline 2779static void noinline ecb_cold
1948verify_watcher (EV_P_ W w) 2780verify_watcher (EV_P_ W w)
1949{ 2781{
1950 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2782 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1951 2783
1952 if (w->pending) 2784 if (w->pending)
1953 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2785 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1954} 2786}
1955 2787
1956static void noinline 2788static void noinline ecb_cold
1957verify_heap (EV_P_ ANHE *heap, int N) 2789verify_heap (EV_P_ ANHE *heap, int N)
1958{ 2790{
1959 int i; 2791 int i;
1960 2792
1961 for (i = HEAP0; i < N + HEAP0; ++i) 2793 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1966 2798
1967 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2799 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1968 } 2800 }
1969} 2801}
1970 2802
1971static void noinline 2803static void noinline ecb_cold
1972array_verify (EV_P_ W *ws, int cnt) 2804array_verify (EV_P_ W *ws, int cnt)
1973{ 2805{
1974 while (cnt--) 2806 while (cnt--)
1975 { 2807 {
1976 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2808 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
1978 } 2810 }
1979} 2811}
1980#endif 2812#endif
1981 2813
1982#if EV_FEATURE_API 2814#if EV_FEATURE_API
1983void 2815void ecb_cold
1984ev_verify (EV_P) 2816ev_verify (EV_P) EV_THROW
1985{ 2817{
1986#if EV_VERIFY 2818#if EV_VERIFY
1987 int i; 2819 int i;
1988 WL w; 2820 WL w, w2;
1989 2821
1990 assert (activecnt >= -1); 2822 assert (activecnt >= -1);
1991 2823
1992 assert (fdchangemax >= fdchangecnt); 2824 assert (fdchangemax >= fdchangecnt);
1993 for (i = 0; i < fdchangecnt; ++i) 2825 for (i = 0; i < fdchangecnt; ++i)
1994 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2826 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1995 2827
1996 assert (anfdmax >= 0); 2828 assert (anfdmax >= 0);
1997 for (i = 0; i < anfdmax; ++i) 2829 for (i = 0; i < anfdmax; ++i)
2830 {
2831 int j = 0;
2832
1998 for (w = anfds [i].head; w; w = w->next) 2833 for (w = w2 = anfds [i].head; w; w = w->next)
1999 { 2834 {
2000 verify_watcher (EV_A_ (W)w); 2835 verify_watcher (EV_A_ (W)w);
2836
2837 if (j++ & 1)
2838 {
2839 assert (("libev: io watcher list contains a loop", w != w2));
2840 w2 = w2->next;
2841 }
2842
2001 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2843 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2002 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2844 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2003 } 2845 }
2846 }
2004 2847
2005 assert (timermax >= timercnt); 2848 assert (timermax >= timercnt);
2006 verify_heap (EV_A_ timers, timercnt); 2849 verify_heap (EV_A_ timers, timercnt);
2007 2850
2008#if EV_PERIODIC_ENABLE 2851#if EV_PERIODIC_ENABLE
… …
2054#endif 2897#endif
2055} 2898}
2056#endif 2899#endif
2057 2900
2058#if EV_MULTIPLICITY 2901#if EV_MULTIPLICITY
2059struct ev_loop * 2902struct ev_loop * ecb_cold
2060#else 2903#else
2061int 2904int
2062#endif 2905#endif
2063ev_default_loop (unsigned int flags) 2906ev_default_loop (unsigned int flags) EV_THROW
2064{ 2907{
2065 if (!ev_default_loop_ptr) 2908 if (!ev_default_loop_ptr)
2066 { 2909 {
2067#if EV_MULTIPLICITY 2910#if EV_MULTIPLICITY
2068 EV_P = ev_default_loop_ptr = &default_loop_struct; 2911 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2087 2930
2088 return ev_default_loop_ptr; 2931 return ev_default_loop_ptr;
2089} 2932}
2090 2933
2091void 2934void
2092ev_loop_fork (EV_P) 2935ev_loop_fork (EV_P) EV_THROW
2093{ 2936{
2094 postfork = 1; /* must be in line with ev_default_fork */ 2937 postfork = 1;
2095} 2938}
2096 2939
2097/*****************************************************************************/ 2940/*****************************************************************************/
2098 2941
2099void 2942void
… …
2101{ 2944{
2102 EV_CB_INVOKE ((W)w, revents); 2945 EV_CB_INVOKE ((W)w, revents);
2103} 2946}
2104 2947
2105unsigned int 2948unsigned int
2106ev_pending_count (EV_P) 2949ev_pending_count (EV_P) EV_THROW
2107{ 2950{
2108 int pri; 2951 int pri;
2109 unsigned int count = 0; 2952 unsigned int count = 0;
2110 2953
2111 for (pri = NUMPRI; pri--; ) 2954 for (pri = NUMPRI; pri--; )
… …
2115} 2958}
2116 2959
2117void noinline 2960void noinline
2118ev_invoke_pending (EV_P) 2961ev_invoke_pending (EV_P)
2119{ 2962{
2120 int pri; 2963 pendingpri = NUMPRI;
2121 2964
2122 for (pri = NUMPRI; pri--; ) 2965 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
2966 {
2967 --pendingpri;
2968
2123 while (pendingcnt [pri]) 2969 while (pendingcnt [pendingpri])
2124 { 2970 {
2125 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2971 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2126 2972
2127 p->w->pending = 0; 2973 p->w->pending = 0;
2128 EV_CB_INVOKE (p->w, p->events); 2974 EV_CB_INVOKE (p->w, p->events);
2129 EV_FREQUENT_CHECK; 2975 EV_FREQUENT_CHECK;
2130 } 2976 }
2977 }
2131} 2978}
2132 2979
2133#if EV_IDLE_ENABLE 2980#if EV_IDLE_ENABLE
2134/* make idle watchers pending. this handles the "call-idle */ 2981/* make idle watchers pending. this handles the "call-idle */
2135/* only when higher priorities are idle" logic */ 2982/* only when higher priorities are idle" logic */
… …
2193 } 3040 }
2194} 3041}
2195 3042
2196#if EV_PERIODIC_ENABLE 3043#if EV_PERIODIC_ENABLE
2197 3044
2198inline_speed 3045static void noinline
2199periodic_recalc (EV_P_ ev_periodic *w) 3046periodic_recalc (EV_P_ ev_periodic *w)
2200{ 3047{
2201 /* TODO: use slow but potentially more correct incremental algo, */ 3048 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2202 /* also do not rely on ceil */ 3049 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2203 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3050
3051 /* the above almost always errs on the low side */
3052 while (at <= ev_rt_now)
3053 {
3054 ev_tstamp nat = at + w->interval;
3055
3056 /* when resolution fails us, we use ev_rt_now */
3057 if (expect_false (nat == at))
3058 {
3059 at = ev_rt_now;
3060 break;
3061 }
3062
3063 at = nat;
3064 }
3065
3066 ev_at (w) = at;
2204} 3067}
2205 3068
2206/* make periodics pending */ 3069/* make periodics pending */
2207inline_size void 3070inline_size void
2208periodics_reify (EV_P) 3071periodics_reify (EV_P)
2209{ 3072{
2210 EV_FREQUENT_CHECK; 3073 EV_FREQUENT_CHECK;
2211 3074
2212 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3075 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2213 { 3076 {
2214 int feed_count = 0;
2215
2216 do 3077 do
2217 { 3078 {
2218 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3079 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2219 3080
2220 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3081 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2230 downheap (periodics, periodiccnt, HEAP0); 3091 downheap (periodics, periodiccnt, HEAP0);
2231 } 3092 }
2232 else if (w->interval) 3093 else if (w->interval)
2233 { 3094 {
2234 periodic_recalc (EV_A_ w); 3095 periodic_recalc (EV_A_ w);
2235
2236 /* if next trigger time is not sufficiently in the future, put it there */
2237 /* this might happen because of floating point inexactness */
2238 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2239 {
2240 ev_at (w) += w->interval;
2241
2242 /* if interval is unreasonably low we might still have a time in the past */
2243 /* so correct this. this will make the periodic very inexact, but the user */
2244 /* has effectively asked to get triggered more often than possible */
2245 if (ev_at (w) < ev_rt_now)
2246 ev_at (w) = ev_rt_now;
2247 }
2248
2249 ANHE_at_cache (periodics [HEAP0]); 3096 ANHE_at_cache (periodics [HEAP0]);
2250 downheap (periodics, periodiccnt, HEAP0); 3097 downheap (periodics, periodiccnt, HEAP0);
2251 } 3098 }
2252 else 3099 else
2253 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3100 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2261 } 3108 }
2262} 3109}
2263 3110
2264/* simply recalculate all periodics */ 3111/* simply recalculate all periodics */
2265/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3112/* TODO: maybe ensure that at least one event happens when jumping forward? */
2266static void noinline 3113static void noinline ecb_cold
2267periodics_reschedule (EV_P) 3114periodics_reschedule (EV_P)
2268{ 3115{
2269 int i; 3116 int i;
2270 3117
2271 /* adjust periodics after time jump */ 3118 /* adjust periodics after time jump */
… …
2284 reheap (periodics, periodiccnt); 3131 reheap (periodics, periodiccnt);
2285} 3132}
2286#endif 3133#endif
2287 3134
2288/* adjust all timers by a given offset */ 3135/* adjust all timers by a given offset */
2289static void noinline 3136static void noinline ecb_cold
2290timers_reschedule (EV_P_ ev_tstamp adjust) 3137timers_reschedule (EV_P_ ev_tstamp adjust)
2291{ 3138{
2292 int i; 3139 int i;
2293 3140
2294 for (i = 0; i < timercnt; ++i) 3141 for (i = 0; i < timercnt; ++i)
… …
2331 * doesn't hurt either as we only do this on time-jumps or 3178 * doesn't hurt either as we only do this on time-jumps or
2332 * in the unlikely event of having been preempted here. 3179 * in the unlikely event of having been preempted here.
2333 */ 3180 */
2334 for (i = 4; --i; ) 3181 for (i = 4; --i; )
2335 { 3182 {
3183 ev_tstamp diff;
2336 rtmn_diff = ev_rt_now - mn_now; 3184 rtmn_diff = ev_rt_now - mn_now;
2337 3185
3186 diff = odiff - rtmn_diff;
3187
2338 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3188 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2339 return; /* all is well */ 3189 return; /* all is well */
2340 3190
2341 ev_rt_now = ev_time (); 3191 ev_rt_now = ev_time ();
2342 mn_now = get_clock (); 3192 mn_now = get_clock ();
2343 now_floor = mn_now; 3193 now_floor = mn_now;
… …
2365 3215
2366 mn_now = ev_rt_now; 3216 mn_now = ev_rt_now;
2367 } 3217 }
2368} 3218}
2369 3219
2370void 3220int
2371ev_run (EV_P_ int flags) 3221ev_run (EV_P_ int flags)
2372{ 3222{
2373#if EV_FEATURE_API 3223#if EV_FEATURE_API
2374 ++loop_depth; 3224 ++loop_depth;
2375#endif 3225#endif
… …
2433 ev_tstamp prev_mn_now = mn_now; 3283 ev_tstamp prev_mn_now = mn_now;
2434 3284
2435 /* update time to cancel out callback processing overhead */ 3285 /* update time to cancel out callback processing overhead */
2436 time_update (EV_A_ 1e100); 3286 time_update (EV_A_ 1e100);
2437 3287
3288 /* from now on, we want a pipe-wake-up */
3289 pipe_write_wanted = 1;
3290
3291 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3292
2438 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt))) 3293 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2439 { 3294 {
2440 waittime = MAX_BLOCKTIME; 3295 waittime = MAX_BLOCKTIME;
2441 3296
2442 if (timercnt) 3297 if (timercnt)
2443 { 3298 {
2444 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3299 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2445 if (waittime > to) waittime = to; 3300 if (waittime > to) waittime = to;
2446 } 3301 }
2447 3302
2448#if EV_PERIODIC_ENABLE 3303#if EV_PERIODIC_ENABLE
2449 if (periodiccnt) 3304 if (periodiccnt)
2450 { 3305 {
2451 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3306 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2452 if (waittime > to) waittime = to; 3307 if (waittime > to) waittime = to;
2453 } 3308 }
2454#endif 3309#endif
2455 3310
2456 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3311 /* don't let timeouts decrease the waittime below timeout_blocktime */
2457 if (expect_false (waittime < timeout_blocktime)) 3312 if (expect_false (waittime < timeout_blocktime))
2458 waittime = timeout_blocktime; 3313 waittime = timeout_blocktime;
3314
3315 /* at this point, we NEED to wait, so we have to ensure */
3316 /* to pass a minimum nonzero value to the backend */
3317 if (expect_false (waittime < backend_mintime))
3318 waittime = backend_mintime;
2459 3319
2460 /* extra check because io_blocktime is commonly 0 */ 3320 /* extra check because io_blocktime is commonly 0 */
2461 if (expect_false (io_blocktime)) 3321 if (expect_false (io_blocktime))
2462 { 3322 {
2463 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3323 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2464 3324
2465 if (sleeptime > waittime - backend_fudge) 3325 if (sleeptime > waittime - backend_mintime)
2466 sleeptime = waittime - backend_fudge; 3326 sleeptime = waittime - backend_mintime;
2467 3327
2468 if (expect_true (sleeptime > 0.)) 3328 if (expect_true (sleeptime > 0.))
2469 { 3329 {
2470 ev_sleep (sleeptime); 3330 ev_sleep (sleeptime);
2471 waittime -= sleeptime; 3331 waittime -= sleeptime;
… …
2478#endif 3338#endif
2479 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ 3339 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2480 backend_poll (EV_A_ waittime); 3340 backend_poll (EV_A_ waittime);
2481 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3341 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2482 3342
3343 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3344
3345 ECB_MEMORY_FENCE_ACQUIRE;
3346 if (pipe_write_skipped)
3347 {
3348 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3349 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3350 }
3351
3352
2483 /* update ev_rt_now, do magic */ 3353 /* update ev_rt_now, do magic */
2484 time_update (EV_A_ waittime + sleeptime); 3354 time_update (EV_A_ waittime + sleeptime);
2485 } 3355 }
2486 3356
2487 /* queue pending timers and reschedule them */ 3357 /* queue pending timers and reschedule them */
… …
2513 loop_done = EVBREAK_CANCEL; 3383 loop_done = EVBREAK_CANCEL;
2514 3384
2515#if EV_FEATURE_API 3385#if EV_FEATURE_API
2516 --loop_depth; 3386 --loop_depth;
2517#endif 3387#endif
3388
3389 return activecnt;
2518} 3390}
2519 3391
2520void 3392void
2521ev_break (EV_P_ int how) 3393ev_break (EV_P_ int how) EV_THROW
2522{ 3394{
2523 loop_done = how; 3395 loop_done = how;
2524} 3396}
2525 3397
2526void 3398void
2527ev_ref (EV_P) 3399ev_ref (EV_P) EV_THROW
2528{ 3400{
2529 ++activecnt; 3401 ++activecnt;
2530} 3402}
2531 3403
2532void 3404void
2533ev_unref (EV_P) 3405ev_unref (EV_P) EV_THROW
2534{ 3406{
2535 --activecnt; 3407 --activecnt;
2536} 3408}
2537 3409
2538void 3410void
2539ev_now_update (EV_P) 3411ev_now_update (EV_P) EV_THROW
2540{ 3412{
2541 time_update (EV_A_ 1e100); 3413 time_update (EV_A_ 1e100);
2542} 3414}
2543 3415
2544void 3416void
2545ev_suspend (EV_P) 3417ev_suspend (EV_P) EV_THROW
2546{ 3418{
2547 ev_now_update (EV_A); 3419 ev_now_update (EV_A);
2548} 3420}
2549 3421
2550void 3422void
2551ev_resume (EV_P) 3423ev_resume (EV_P) EV_THROW
2552{ 3424{
2553 ev_tstamp mn_prev = mn_now; 3425 ev_tstamp mn_prev = mn_now;
2554 3426
2555 ev_now_update (EV_A); 3427 ev_now_update (EV_A);
2556 timers_reschedule (EV_A_ mn_now - mn_prev); 3428 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2595 w->pending = 0; 3467 w->pending = 0;
2596 } 3468 }
2597} 3469}
2598 3470
2599int 3471int
2600ev_clear_pending (EV_P_ void *w) 3472ev_clear_pending (EV_P_ void *w) EV_THROW
2601{ 3473{
2602 W w_ = (W)w; 3474 W w_ = (W)w;
2603 int pending = w_->pending; 3475 int pending = w_->pending;
2604 3476
2605 if (expect_true (pending)) 3477 if (expect_true (pending))
… …
2638} 3510}
2639 3511
2640/*****************************************************************************/ 3512/*****************************************************************************/
2641 3513
2642void noinline 3514void noinline
2643ev_io_start (EV_P_ ev_io *w) 3515ev_io_start (EV_P_ ev_io *w) EV_THROW
2644{ 3516{
2645 int fd = w->fd; 3517 int fd = w->fd;
2646 3518
2647 if (expect_false (ev_is_active (w))) 3519 if (expect_false (ev_is_active (w)))
2648 return; 3520 return;
… …
2654 3526
2655 ev_start (EV_A_ (W)w, 1); 3527 ev_start (EV_A_ (W)w, 1);
2656 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3528 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2657 wlist_add (&anfds[fd].head, (WL)w); 3529 wlist_add (&anfds[fd].head, (WL)w);
2658 3530
3531 /* common bug, apparently */
3532 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3533
2659 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3534 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2660 w->events &= ~EV__IOFDSET; 3535 w->events &= ~EV__IOFDSET;
2661 3536
2662 EV_FREQUENT_CHECK; 3537 EV_FREQUENT_CHECK;
2663} 3538}
2664 3539
2665void noinline 3540void noinline
2666ev_io_stop (EV_P_ ev_io *w) 3541ev_io_stop (EV_P_ ev_io *w) EV_THROW
2667{ 3542{
2668 clear_pending (EV_A_ (W)w); 3543 clear_pending (EV_A_ (W)w);
2669 if (expect_false (!ev_is_active (w))) 3544 if (expect_false (!ev_is_active (w)))
2670 return; 3545 return;
2671 3546
… …
2680 3555
2681 EV_FREQUENT_CHECK; 3556 EV_FREQUENT_CHECK;
2682} 3557}
2683 3558
2684void noinline 3559void noinline
2685ev_timer_start (EV_P_ ev_timer *w) 3560ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2686{ 3561{
2687 if (expect_false (ev_is_active (w))) 3562 if (expect_false (ev_is_active (w)))
2688 return; 3563 return;
2689 3564
2690 ev_at (w) += mn_now; 3565 ev_at (w) += mn_now;
… …
2704 3579
2705 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3580 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2706} 3581}
2707 3582
2708void noinline 3583void noinline
2709ev_timer_stop (EV_P_ ev_timer *w) 3584ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2710{ 3585{
2711 clear_pending (EV_A_ (W)w); 3586 clear_pending (EV_A_ (W)w);
2712 if (expect_false (!ev_is_active (w))) 3587 if (expect_false (!ev_is_active (w)))
2713 return; 3588 return;
2714 3589
… …
2734 3609
2735 EV_FREQUENT_CHECK; 3610 EV_FREQUENT_CHECK;
2736} 3611}
2737 3612
2738void noinline 3613void noinline
2739ev_timer_again (EV_P_ ev_timer *w) 3614ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2740{ 3615{
2741 EV_FREQUENT_CHECK; 3616 EV_FREQUENT_CHECK;
3617
3618 clear_pending (EV_A_ (W)w);
2742 3619
2743 if (ev_is_active (w)) 3620 if (ev_is_active (w))
2744 { 3621 {
2745 if (w->repeat) 3622 if (w->repeat)
2746 { 3623 {
… …
2759 3636
2760 EV_FREQUENT_CHECK; 3637 EV_FREQUENT_CHECK;
2761} 3638}
2762 3639
2763ev_tstamp 3640ev_tstamp
2764ev_timer_remaining (EV_P_ ev_timer *w) 3641ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2765{ 3642{
2766 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3643 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2767} 3644}
2768 3645
2769#if EV_PERIODIC_ENABLE 3646#if EV_PERIODIC_ENABLE
2770void noinline 3647void noinline
2771ev_periodic_start (EV_P_ ev_periodic *w) 3648ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2772{ 3649{
2773 if (expect_false (ev_is_active (w))) 3650 if (expect_false (ev_is_active (w)))
2774 return; 3651 return;
2775 3652
2776 if (w->reschedule_cb) 3653 if (w->reschedule_cb)
… …
2796 3673
2797 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3674 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2798} 3675}
2799 3676
2800void noinline 3677void noinline
2801ev_periodic_stop (EV_P_ ev_periodic *w) 3678ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2802{ 3679{
2803 clear_pending (EV_A_ (W)w); 3680 clear_pending (EV_A_ (W)w);
2804 if (expect_false (!ev_is_active (w))) 3681 if (expect_false (!ev_is_active (w)))
2805 return; 3682 return;
2806 3683
… …
2824 3701
2825 EV_FREQUENT_CHECK; 3702 EV_FREQUENT_CHECK;
2826} 3703}
2827 3704
2828void noinline 3705void noinline
2829ev_periodic_again (EV_P_ ev_periodic *w) 3706ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2830{ 3707{
2831 /* TODO: use adjustheap and recalculation */ 3708 /* TODO: use adjustheap and recalculation */
2832 ev_periodic_stop (EV_A_ w); 3709 ev_periodic_stop (EV_A_ w);
2833 ev_periodic_start (EV_A_ w); 3710 ev_periodic_start (EV_A_ w);
2834} 3711}
… …
2839#endif 3716#endif
2840 3717
2841#if EV_SIGNAL_ENABLE 3718#if EV_SIGNAL_ENABLE
2842 3719
2843void noinline 3720void noinline
2844ev_signal_start (EV_P_ ev_signal *w) 3721ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2845{ 3722{
2846 if (expect_false (ev_is_active (w))) 3723 if (expect_false (ev_is_active (w)))
2847 return; 3724 return;
2848 3725
2849 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3726 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
2851#if EV_MULTIPLICITY 3728#if EV_MULTIPLICITY
2852 assert (("libev: a signal must not be attached to two different loops", 3729 assert (("libev: a signal must not be attached to two different loops",
2853 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 3730 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2854 3731
2855 signals [w->signum - 1].loop = EV_A; 3732 signals [w->signum - 1].loop = EV_A;
3733 ECB_MEMORY_FENCE_RELEASE;
2856#endif 3734#endif
2857 3735
2858 EV_FREQUENT_CHECK; 3736 EV_FREQUENT_CHECK;
2859 3737
2860#if EV_USE_SIGNALFD 3738#if EV_USE_SIGNALFD
… …
2920 3798
2921 EV_FREQUENT_CHECK; 3799 EV_FREQUENT_CHECK;
2922} 3800}
2923 3801
2924void noinline 3802void noinline
2925ev_signal_stop (EV_P_ ev_signal *w) 3803ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2926{ 3804{
2927 clear_pending (EV_A_ (W)w); 3805 clear_pending (EV_A_ (W)w);
2928 if (expect_false (!ev_is_active (w))) 3806 if (expect_false (!ev_is_active (w)))
2929 return; 3807 return;
2930 3808
… …
2961#endif 3839#endif
2962 3840
2963#if EV_CHILD_ENABLE 3841#if EV_CHILD_ENABLE
2964 3842
2965void 3843void
2966ev_child_start (EV_P_ ev_child *w) 3844ev_child_start (EV_P_ ev_child *w) EV_THROW
2967{ 3845{
2968#if EV_MULTIPLICITY 3846#if EV_MULTIPLICITY
2969 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3847 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2970#endif 3848#endif
2971 if (expect_false (ev_is_active (w))) 3849 if (expect_false (ev_is_active (w)))
… …
2978 3856
2979 EV_FREQUENT_CHECK; 3857 EV_FREQUENT_CHECK;
2980} 3858}
2981 3859
2982void 3860void
2983ev_child_stop (EV_P_ ev_child *w) 3861ev_child_stop (EV_P_ ev_child *w) EV_THROW
2984{ 3862{
2985 clear_pending (EV_A_ (W)w); 3863 clear_pending (EV_A_ (W)w);
2986 if (expect_false (!ev_is_active (w))) 3864 if (expect_false (!ev_is_active (w)))
2987 return; 3865 return;
2988 3866
… …
3015# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 3893# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3016 3894
3017static void noinline 3895static void noinline
3018infy_add (EV_P_ ev_stat *w) 3896infy_add (EV_P_ ev_stat *w)
3019{ 3897{
3020 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); 3898 w->wd = inotify_add_watch (fs_fd, w->path,
3899 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
3900 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
3901 | IN_DONT_FOLLOW | IN_MASK_ADD);
3021 3902
3022 if (w->wd >= 0) 3903 if (w->wd >= 0)
3023 { 3904 {
3024 struct statfs sfs; 3905 struct statfs sfs;
3025 3906
… …
3029 3910
3030 if (!fs_2625) 3911 if (!fs_2625)
3031 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3912 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3032 else if (!statfs (w->path, &sfs) 3913 else if (!statfs (w->path, &sfs)
3033 && (sfs.f_type == 0x1373 /* devfs */ 3914 && (sfs.f_type == 0x1373 /* devfs */
3915 || sfs.f_type == 0x4006 /* fat */
3916 || sfs.f_type == 0x4d44 /* msdos */
3034 || sfs.f_type == 0xEF53 /* ext2/3 */ 3917 || sfs.f_type == 0xEF53 /* ext2/3 */
3918 || sfs.f_type == 0x72b6 /* jffs2 */
3919 || sfs.f_type == 0x858458f6 /* ramfs */
3920 || sfs.f_type == 0x5346544e /* ntfs */
3035 || sfs.f_type == 0x3153464a /* jfs */ 3921 || sfs.f_type == 0x3153464a /* jfs */
3922 || sfs.f_type == 0x9123683e /* btrfs */
3036 || sfs.f_type == 0x52654973 /* reiser3 */ 3923 || sfs.f_type == 0x52654973 /* reiser3 */
3037 || sfs.f_type == 0x01021994 /* tempfs */ 3924 || sfs.f_type == 0x01021994 /* tmpfs */
3038 || sfs.f_type == 0x58465342 /* xfs */)) 3925 || sfs.f_type == 0x58465342 /* xfs */))
3039 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 3926 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3040 else 3927 else
3041 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 3928 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3042 } 3929 }
… …
3063 if (!pend || pend == path) 3950 if (!pend || pend == path)
3064 break; 3951 break;
3065 3952
3066 *pend = 0; 3953 *pend = 0;
3067 w->wd = inotify_add_watch (fs_fd, path, mask); 3954 w->wd = inotify_add_watch (fs_fd, path, mask);
3068 } 3955 }
3069 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3956 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
3070 } 3957 }
3071 } 3958 }
3072 3959
3073 if (w->wd >= 0) 3960 if (w->wd >= 0)
… …
3140 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4027 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3141 ofs += sizeof (struct inotify_event) + ev->len; 4028 ofs += sizeof (struct inotify_event) + ev->len;
3142 } 4029 }
3143} 4030}
3144 4031
3145inline_size void 4032inline_size void ecb_cold
3146ev_check_2625 (EV_P) 4033ev_check_2625 (EV_P)
3147{ 4034{
3148 /* kernels < 2.6.25 are borked 4035 /* kernels < 2.6.25 are borked
3149 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4036 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3150 */ 4037 */
… …
3155} 4042}
3156 4043
3157inline_size int 4044inline_size int
3158infy_newfd (void) 4045infy_newfd (void)
3159{ 4046{
3160#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4047#if defined IN_CLOEXEC && defined IN_NONBLOCK
3161 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4048 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3162 if (fd >= 0) 4049 if (fd >= 0)
3163 return fd; 4050 return fd;
3164#endif 4051#endif
3165 return inotify_init (); 4052 return inotify_init ();
… …
3240#else 4127#else
3241# define EV_LSTAT(p,b) lstat (p, b) 4128# define EV_LSTAT(p,b) lstat (p, b)
3242#endif 4129#endif
3243 4130
3244void 4131void
3245ev_stat_stat (EV_P_ ev_stat *w) 4132ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3246{ 4133{
3247 if (lstat (w->path, &w->attr) < 0) 4134 if (lstat (w->path, &w->attr) < 0)
3248 w->attr.st_nlink = 0; 4135 w->attr.st_nlink = 0;
3249 else if (!w->attr.st_nlink) 4136 else if (!w->attr.st_nlink)
3250 w->attr.st_nlink = 1; 4137 w->attr.st_nlink = 1;
… …
3289 ev_feed_event (EV_A_ w, EV_STAT); 4176 ev_feed_event (EV_A_ w, EV_STAT);
3290 } 4177 }
3291} 4178}
3292 4179
3293void 4180void
3294ev_stat_start (EV_P_ ev_stat *w) 4181ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3295{ 4182{
3296 if (expect_false (ev_is_active (w))) 4183 if (expect_false (ev_is_active (w)))
3297 return; 4184 return;
3298 4185
3299 ev_stat_stat (EV_A_ w); 4186 ev_stat_stat (EV_A_ w);
… …
3320 4207
3321 EV_FREQUENT_CHECK; 4208 EV_FREQUENT_CHECK;
3322} 4209}
3323 4210
3324void 4211void
3325ev_stat_stop (EV_P_ ev_stat *w) 4212ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3326{ 4213{
3327 clear_pending (EV_A_ (W)w); 4214 clear_pending (EV_A_ (W)w);
3328 if (expect_false (!ev_is_active (w))) 4215 if (expect_false (!ev_is_active (w)))
3329 return; 4216 return;
3330 4217
… …
3346} 4233}
3347#endif 4234#endif
3348 4235
3349#if EV_IDLE_ENABLE 4236#if EV_IDLE_ENABLE
3350void 4237void
3351ev_idle_start (EV_P_ ev_idle *w) 4238ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3352{ 4239{
3353 if (expect_false (ev_is_active (w))) 4240 if (expect_false (ev_is_active (w)))
3354 return; 4241 return;
3355 4242
3356 pri_adjust (EV_A_ (W)w); 4243 pri_adjust (EV_A_ (W)w);
… …
3369 4256
3370 EV_FREQUENT_CHECK; 4257 EV_FREQUENT_CHECK;
3371} 4258}
3372 4259
3373void 4260void
3374ev_idle_stop (EV_P_ ev_idle *w) 4261ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3375{ 4262{
3376 clear_pending (EV_A_ (W)w); 4263 clear_pending (EV_A_ (W)w);
3377 if (expect_false (!ev_is_active (w))) 4264 if (expect_false (!ev_is_active (w)))
3378 return; 4265 return;
3379 4266
… …
3393} 4280}
3394#endif 4281#endif
3395 4282
3396#if EV_PREPARE_ENABLE 4283#if EV_PREPARE_ENABLE
3397void 4284void
3398ev_prepare_start (EV_P_ ev_prepare *w) 4285ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3399{ 4286{
3400 if (expect_false (ev_is_active (w))) 4287 if (expect_false (ev_is_active (w)))
3401 return; 4288 return;
3402 4289
3403 EV_FREQUENT_CHECK; 4290 EV_FREQUENT_CHECK;
… …
3408 4295
3409 EV_FREQUENT_CHECK; 4296 EV_FREQUENT_CHECK;
3410} 4297}
3411 4298
3412void 4299void
3413ev_prepare_stop (EV_P_ ev_prepare *w) 4300ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3414{ 4301{
3415 clear_pending (EV_A_ (W)w); 4302 clear_pending (EV_A_ (W)w);
3416 if (expect_false (!ev_is_active (w))) 4303 if (expect_false (!ev_is_active (w)))
3417 return; 4304 return;
3418 4305
… …
3431} 4318}
3432#endif 4319#endif
3433 4320
3434#if EV_CHECK_ENABLE 4321#if EV_CHECK_ENABLE
3435void 4322void
3436ev_check_start (EV_P_ ev_check *w) 4323ev_check_start (EV_P_ ev_check *w) EV_THROW
3437{ 4324{
3438 if (expect_false (ev_is_active (w))) 4325 if (expect_false (ev_is_active (w)))
3439 return; 4326 return;
3440 4327
3441 EV_FREQUENT_CHECK; 4328 EV_FREQUENT_CHECK;
… …
3446 4333
3447 EV_FREQUENT_CHECK; 4334 EV_FREQUENT_CHECK;
3448} 4335}
3449 4336
3450void 4337void
3451ev_check_stop (EV_P_ ev_check *w) 4338ev_check_stop (EV_P_ ev_check *w) EV_THROW
3452{ 4339{
3453 clear_pending (EV_A_ (W)w); 4340 clear_pending (EV_A_ (W)w);
3454 if (expect_false (!ev_is_active (w))) 4341 if (expect_false (!ev_is_active (w)))
3455 return; 4342 return;
3456 4343
… …
3469} 4356}
3470#endif 4357#endif
3471 4358
3472#if EV_EMBED_ENABLE 4359#if EV_EMBED_ENABLE
3473void noinline 4360void noinline
3474ev_embed_sweep (EV_P_ ev_embed *w) 4361ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3475{ 4362{
3476 ev_run (w->other, EVRUN_NOWAIT); 4363 ev_run (w->other, EVRUN_NOWAIT);
3477} 4364}
3478 4365
3479static void 4366static void
… …
3527 ev_idle_stop (EV_A_ idle); 4414 ev_idle_stop (EV_A_ idle);
3528} 4415}
3529#endif 4416#endif
3530 4417
3531void 4418void
3532ev_embed_start (EV_P_ ev_embed *w) 4419ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3533{ 4420{
3534 if (expect_false (ev_is_active (w))) 4421 if (expect_false (ev_is_active (w)))
3535 return; 4422 return;
3536 4423
3537 { 4424 {
… …
3558 4445
3559 EV_FREQUENT_CHECK; 4446 EV_FREQUENT_CHECK;
3560} 4447}
3561 4448
3562void 4449void
3563ev_embed_stop (EV_P_ ev_embed *w) 4450ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3564{ 4451{
3565 clear_pending (EV_A_ (W)w); 4452 clear_pending (EV_A_ (W)w);
3566 if (expect_false (!ev_is_active (w))) 4453 if (expect_false (!ev_is_active (w)))
3567 return; 4454 return;
3568 4455
… …
3578} 4465}
3579#endif 4466#endif
3580 4467
3581#if EV_FORK_ENABLE 4468#if EV_FORK_ENABLE
3582void 4469void
3583ev_fork_start (EV_P_ ev_fork *w) 4470ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3584{ 4471{
3585 if (expect_false (ev_is_active (w))) 4472 if (expect_false (ev_is_active (w)))
3586 return; 4473 return;
3587 4474
3588 EV_FREQUENT_CHECK; 4475 EV_FREQUENT_CHECK;
… …
3593 4480
3594 EV_FREQUENT_CHECK; 4481 EV_FREQUENT_CHECK;
3595} 4482}
3596 4483
3597void 4484void
3598ev_fork_stop (EV_P_ ev_fork *w) 4485ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3599{ 4486{
3600 clear_pending (EV_A_ (W)w); 4487 clear_pending (EV_A_ (W)w);
3601 if (expect_false (!ev_is_active (w))) 4488 if (expect_false (!ev_is_active (w)))
3602 return; 4489 return;
3603 4490
… …
3616} 4503}
3617#endif 4504#endif
3618 4505
3619#if EV_CLEANUP_ENABLE 4506#if EV_CLEANUP_ENABLE
3620void 4507void
3621ev_cleanup_start (EV_P_ ev_cleanup *w) 4508ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
3622{ 4509{
3623 if (expect_false (ev_is_active (w))) 4510 if (expect_false (ev_is_active (w)))
3624 return; 4511 return;
3625 4512
3626 EV_FREQUENT_CHECK; 4513 EV_FREQUENT_CHECK;
… …
3633 ev_unref (EV_A); 4520 ev_unref (EV_A);
3634 EV_FREQUENT_CHECK; 4521 EV_FREQUENT_CHECK;
3635} 4522}
3636 4523
3637void 4524void
3638ev_cleanup_stop (EV_P_ ev_cleanup *w) 4525ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
3639{ 4526{
3640 clear_pending (EV_A_ (W)w); 4527 clear_pending (EV_A_ (W)w);
3641 if (expect_false (!ev_is_active (w))) 4528 if (expect_false (!ev_is_active (w)))
3642 return; 4529 return;
3643 4530
… …
3657} 4544}
3658#endif 4545#endif
3659 4546
3660#if EV_ASYNC_ENABLE 4547#if EV_ASYNC_ENABLE
3661void 4548void
3662ev_async_start (EV_P_ ev_async *w) 4549ev_async_start (EV_P_ ev_async *w) EV_THROW
3663{ 4550{
3664 if (expect_false (ev_is_active (w))) 4551 if (expect_false (ev_is_active (w)))
3665 return; 4552 return;
3666 4553
3667 w->sent = 0; 4554 w->sent = 0;
… …
3676 4563
3677 EV_FREQUENT_CHECK; 4564 EV_FREQUENT_CHECK;
3678} 4565}
3679 4566
3680void 4567void
3681ev_async_stop (EV_P_ ev_async *w) 4568ev_async_stop (EV_P_ ev_async *w) EV_THROW
3682{ 4569{
3683 clear_pending (EV_A_ (W)w); 4570 clear_pending (EV_A_ (W)w);
3684 if (expect_false (!ev_is_active (w))) 4571 if (expect_false (!ev_is_active (w)))
3685 return; 4572 return;
3686 4573
… …
3697 4584
3698 EV_FREQUENT_CHECK; 4585 EV_FREQUENT_CHECK;
3699} 4586}
3700 4587
3701void 4588void
3702ev_async_send (EV_P_ ev_async *w) 4589ev_async_send (EV_P_ ev_async *w) EV_THROW
3703{ 4590{
3704 w->sent = 1; 4591 w->sent = 1;
3705 evpipe_write (EV_A_ &async_pending); 4592 evpipe_write (EV_A_ &async_pending);
3706} 4593}
3707#endif 4594#endif
… …
3744 4631
3745 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4632 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3746} 4633}
3747 4634
3748void 4635void
3749ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4636ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3750{ 4637{
3751 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4638 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3752 4639
3753 if (expect_false (!once)) 4640 if (expect_false (!once))
3754 { 4641 {
… …
3775} 4662}
3776 4663
3777/*****************************************************************************/ 4664/*****************************************************************************/
3778 4665
3779#if EV_WALK_ENABLE 4666#if EV_WALK_ENABLE
3780void 4667void ecb_cold
3781ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4668ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3782{ 4669{
3783 int i, j; 4670 int i, j;
3784 ev_watcher_list *wl, *wn; 4671 ev_watcher_list *wl, *wn;
3785 4672
3786 if (types & (EV_IO | EV_EMBED)) 4673 if (types & (EV_IO | EV_EMBED))
… …
3829 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4716 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3830#endif 4717#endif
3831 4718
3832#if EV_IDLE_ENABLE 4719#if EV_IDLE_ENABLE
3833 if (types & EV_IDLE) 4720 if (types & EV_IDLE)
3834 for (j = NUMPRI; i--; ) 4721 for (j = NUMPRI; j--; )
3835 for (i = idlecnt [j]; i--; ) 4722 for (i = idlecnt [j]; i--; )
3836 cb (EV_A_ EV_IDLE, idles [j][i]); 4723 cb (EV_A_ EV_IDLE, idles [j][i]);
3837#endif 4724#endif
3838 4725
3839#if EV_FORK_ENABLE 4726#if EV_FORK_ENABLE
… …
3892 4779
3893#if EV_MULTIPLICITY 4780#if EV_MULTIPLICITY
3894 #include "ev_wrap.h" 4781 #include "ev_wrap.h"
3895#endif 4782#endif
3896 4783
3897EV_CPP(})
3898

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