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Comparing libev/ev.c (file contents):
Revision 1.470 by root, Sun Sep 7 13:44:21 2014 UTC vs.
Revision 1.508 by root, Thu Jul 11 08:29:08 2019 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010,2011,2012,2013 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007-2019 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
115# else 115# else
116# undef EV_USE_EPOLL 116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0 117# define EV_USE_EPOLL 0
118# endif 118# endif
119 119
120# if HAVE_LINUX_AIO_ABI_H
121# ifndef EV_USE_LINUXAIO
122# define EV_USE_LINUXAIO EV_FEATURE_BACKENDS
123# endif
124# else
125# undef EV_USE_LINUXAIO
126# define EV_USE_LINUXAIO 0
127# endif
128
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H 129# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
121# ifndef EV_USE_KQUEUE 130# ifndef EV_USE_KQUEUE
122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS 131# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
123# endif 132# endif
124# else 133# else
162# define EV_USE_EVENTFD 0 171# define EV_USE_EVENTFD 0
163# endif 172# endif
164 173
165#endif 174#endif
166 175
176/* OS X, in its infinite idiocy, actually HARDCODES
177 * a limit of 1024 into their select. Where people have brains,
178 * OS X engineers apparently have a vacuum. Or maybe they were
179 * ordered to have a vacuum, or they do anything for money.
180 * This might help. Or not.
181 * Note that this must be defined early, as other include files
182 * will rely on this define as well.
183 */
184#define _DARWIN_UNLIMITED_SELECT 1
185
167#include <stdlib.h> 186#include <stdlib.h>
168#include <string.h> 187#include <string.h>
169#include <fcntl.h> 188#include <fcntl.h>
170#include <stddef.h> 189#include <stddef.h>
171 190
208# ifndef EV_SELECT_IS_WINSOCKET 227# ifndef EV_SELECT_IS_WINSOCKET
209# define EV_SELECT_IS_WINSOCKET 1 228# define EV_SELECT_IS_WINSOCKET 1
210# endif 229# endif
211# undef EV_AVOID_STDIO 230# undef EV_AVOID_STDIO
212#endif 231#endif
213
214/* OS X, in its infinite idiocy, actually HARDCODES
215 * a limit of 1024 into their select. Where people have brains,
216 * OS X engineers apparently have a vacuum. Or maybe they were
217 * ordered to have a vacuum, or they do anything for money.
218 * This might help. Or not.
219 */
220#define _DARWIN_UNLIMITED_SELECT 1
221 232
222/* this block tries to deduce configuration from header-defined symbols and defaults */ 233/* this block tries to deduce configuration from header-defined symbols and defaults */
223 234
224/* try to deduce the maximum number of signals on this platform */ 235/* try to deduce the maximum number of signals on this platform */
225#if defined EV_NSIG 236#if defined EV_NSIG
313 324
314#ifndef EV_USE_PORT 325#ifndef EV_USE_PORT
315# define EV_USE_PORT 0 326# define EV_USE_PORT 0
316#endif 327#endif
317 328
329#ifndef EV_USE_LINUXAIO
330# if __linux /* libev currently assumes linux/aio_abi.h is always available on linux */
331# define EV_USE_LINUXAIO 1
332# else
333# define EV_USE_LINUXAIO 0
334# endif
335#endif
336
337#ifndef EV_USE_IOURING
338# if __linux
339# define EV_USE_IOURING 0
340# else
341# define EV_USE_IOURING 0
342# endif
343#endif
344
318#ifndef EV_USE_INOTIFY 345#ifndef EV_USE_INOTIFY
319# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 346# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
320# define EV_USE_INOTIFY EV_FEATURE_OS 347# define EV_USE_INOTIFY EV_FEATURE_OS
321# else 348# else
322# define EV_USE_INOTIFY 0 349# define EV_USE_INOTIFY 0
363 390
364#ifndef EV_HEAP_CACHE_AT 391#ifndef EV_HEAP_CACHE_AT
365# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 392# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
366#endif 393#endif
367 394
368#ifdef ANDROID 395#ifdef __ANDROID__
369/* supposedly, android doesn't typedef fd_mask */ 396/* supposedly, android doesn't typedef fd_mask */
370# undef EV_USE_SELECT 397# undef EV_USE_SELECT
371# define EV_USE_SELECT 0 398# define EV_USE_SELECT 0
372/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */ 399/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
373# undef EV_USE_CLOCK_SYSCALL 400# undef EV_USE_CLOCK_SYSCALL
387# include <sys/syscall.h> 414# include <sys/syscall.h>
388# ifdef SYS_clock_gettime 415# ifdef SYS_clock_gettime
389# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 416# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
390# undef EV_USE_MONOTONIC 417# undef EV_USE_MONOTONIC
391# define EV_USE_MONOTONIC 1 418# define EV_USE_MONOTONIC 1
419# define EV_NEED_SYSCALL 1
392# else 420# else
393# undef EV_USE_CLOCK_SYSCALL 421# undef EV_USE_CLOCK_SYSCALL
394# define EV_USE_CLOCK_SYSCALL 0 422# define EV_USE_CLOCK_SYSCALL 0
395# endif 423# endif
396#endif 424#endif
414 442
415#if !EV_USE_NANOSLEEP 443#if !EV_USE_NANOSLEEP
416/* hp-ux has it in sys/time.h, which we unconditionally include above */ 444/* hp-ux has it in sys/time.h, which we unconditionally include above */
417# if !defined _WIN32 && !defined __hpux 445# if !defined _WIN32 && !defined __hpux
418# include <sys/select.h> 446# include <sys/select.h>
447# endif
448#endif
449
450#if EV_USE_LINUXAIO
451# include <sys/syscall.h>
452# if SYS_io_getevents && EV_USE_EPOLL /* linuxaio backend requires epoll backend */
453# define EV_NEED_SYSCALL 1
454# else
455# undef EV_USE_LINUXAIO
456# define EV_USE_LINUXAIO 0
457# endif
458#endif
459
460#if EV_USE_IOURING
461# include <sys/syscall.h>
462# if !SYS_io_uring_setup && __linux && !__alpha
463# define SYS_io_uring_setup 425
464# define SYS_io_uring_enter 426
465# define SYS_io_uring_wregister 427
466# endif
467# if SYS_io_uring_setup && EV_USE_EPOLL /* iouring backend requires epoll backend */
468# define EV_NEED_SYSCALL 1
469# else
470# undef EV_USE_IOURING
471# define EV_USE_IOURING 0
419# endif 472# endif
420#endif 473#endif
421 474
422#if EV_USE_INOTIFY 475#if EV_USE_INOTIFY
423# include <sys/statfs.h> 476# include <sys/statfs.h>
465 uint32_t ssi_signo; 518 uint32_t ssi_signo;
466 char pad[128 - sizeof (uint32_t)]; 519 char pad[128 - sizeof (uint32_t)];
467}; 520};
468#endif 521#endif
469 522
470/**/ 523/*****************************************************************************/
471 524
472#if EV_VERIFY >= 3 525#if EV_VERIFY >= 3
473# define EV_FREQUENT_CHECK ev_verify (EV_A) 526# define EV_FREQUENT_CHECK ev_verify (EV_A)
474#else 527#else
475# define EV_FREQUENT_CHECK do { } while (0) 528# define EV_FREQUENT_CHECK do { } while (0)
480 * This value is good at least till the year 4000. 533 * This value is good at least till the year 4000.
481 */ 534 */
482#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */ 535#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
483/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */ 536/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
484 537
485#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 538#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
486#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 539#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
487 540
541/* find a portable timestamp that is "always" in the future but fits into time_t.
542 * this is quite hard, and we are mostly guessing - we handle 32 bit signed/unsigned time_t,
543 * and sizes larger than 32 bit, and maybe the unlikely floating point time_t */
544#define EV_TSTAMP_HUGE \
545 (sizeof (time_t) >= 8 ? 10000000000000. \
546 : 0 < (time_t)4294967295 ? 4294967295. \
547 : 2147483647.) \
548
549#define EV_TS_TO_MSEC(a) a * 1e3 + 0.9999
550#define EV_TS_FROM_USEC(us) us * 1e-6
488#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) 551#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
489#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0) 552#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
553#define EV_TV_GET(tv) ((tv).tv_sec + (tv).tv_usec * 1e-6)
554#define EV_TS_GET(ts) ((ts).tv_sec + (ts).tv_nsec * 1e-9)
490 555
491/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ 556/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
492/* ECB.H BEGIN */ 557/* ECB.H BEGIN */
493/* 558/*
494 * libecb - http://software.schmorp.de/pkg/libecb 559 * libecb - http://software.schmorp.de/pkg/libecb
495 * 560 *
496 * Copyright (©) 2009-2014 Marc Alexander Lehmann <libecb@schmorp.de> 561 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
497 * Copyright (©) 2011 Emanuele Giaquinta 562 * Copyright (©) 2011 Emanuele Giaquinta
498 * All rights reserved. 563 * All rights reserved.
499 * 564 *
500 * Redistribution and use in source and binary forms, with or without modifica- 565 * Redistribution and use in source and binary forms, with or without modifica-
501 * tion, are permitted provided that the following conditions are met: 566 * tion, are permitted provided that the following conditions are met:
532 597
533#ifndef ECB_H 598#ifndef ECB_H
534#define ECB_H 599#define ECB_H
535 600
536/* 16 bits major, 16 bits minor */ 601/* 16 bits major, 16 bits minor */
537#define ECB_VERSION 0x00010003 602#define ECB_VERSION 0x00010006
538 603
539#ifdef _WIN32 604#ifdef _WIN32
540 typedef signed char int8_t; 605 typedef signed char int8_t;
541 typedef unsigned char uint8_t; 606 typedef unsigned char uint8_t;
542 typedef signed short int16_t; 607 typedef signed short int16_t;
559 typedef uint32_t uintptr_t; 624 typedef uint32_t uintptr_t;
560 typedef int32_t intptr_t; 625 typedef int32_t intptr_t;
561 #endif 626 #endif
562#else 627#else
563 #include <inttypes.h> 628 #include <inttypes.h>
564 #if UINTMAX_MAX > 0xffffffffU 629 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
565 #define ECB_PTRSIZE 8 630 #define ECB_PTRSIZE 8
566 #else 631 #else
567 #define ECB_PTRSIZE 4 632 #define ECB_PTRSIZE 4
568 #endif 633 #endif
569#endif 634#endif
570 635
636#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
637#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
638
571/* work around x32 idiocy by defining proper macros */ 639/* work around x32 idiocy by defining proper macros */
572#if __amd64 || __x86_64 || _M_AMD64 || _M_X64 640#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
573 #if _ILP32 641 #if _ILP32
574 #define ECB_AMD64_X32 1 642 #define ECB_AMD64_X32 1
575 #else 643 #else
576 #define ECB_AMD64 1 644 #define ECB_AMD64 1
577 #endif 645 #endif
582 * causing enormous grief in return for some better fake benchmark numbers. 650 * causing enormous grief in return for some better fake benchmark numbers.
583 * or so. 651 * or so.
584 * we try to detect these and simply assume they are not gcc - if they have 652 * we try to detect these and simply assume they are not gcc - if they have
585 * an issue with that they should have done it right in the first place. 653 * an issue with that they should have done it right in the first place.
586 */ 654 */
587#ifndef ECB_GCC_VERSION
588 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__ 655#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
589 #define ECB_GCC_VERSION(major,minor) 0 656 #define ECB_GCC_VERSION(major,minor) 0
590 #else 657#else
591 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) 658 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
592 #endif 659#endif
660
661#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
662
663#if __clang__ && defined __has_builtin
664 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
665#else
666 #define ECB_CLANG_BUILTIN(x) 0
667#endif
668
669#if __clang__ && defined __has_extension
670 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
671#else
672 #define ECB_CLANG_EXTENSION(x) 0
593#endif 673#endif
594 674
595#define ECB_CPP (__cplusplus+0) 675#define ECB_CPP (__cplusplus+0)
596#define ECB_CPP11 (__cplusplus >= 201103L) 676#define ECB_CPP11 (__cplusplus >= 201103L)
677#define ECB_CPP14 (__cplusplus >= 201402L)
678#define ECB_CPP17 (__cplusplus >= 201703L)
597 679
598#if ECB_CPP 680#if ECB_CPP
599 #define ECB_C 0 681 #define ECB_C 0
600 #define ECB_STDC_VERSION 0 682 #define ECB_STDC_VERSION 0
601#else 683#else
603 #define ECB_STDC_VERSION __STDC_VERSION__ 685 #define ECB_STDC_VERSION __STDC_VERSION__
604#endif 686#endif
605 687
606#define ECB_C99 (ECB_STDC_VERSION >= 199901L) 688#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
607#define ECB_C11 (ECB_STDC_VERSION >= 201112L) 689#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
690#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
608 691
609#if ECB_CPP 692#if ECB_CPP
610 #define ECB_EXTERN_C extern "C" 693 #define ECB_EXTERN_C extern "C"
611 #define ECB_EXTERN_C_BEG ECB_EXTERN_C { 694 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
612 #define ECB_EXTERN_C_END } 695 #define ECB_EXTERN_C_END }
627 710
628#if ECB_NO_SMP 711#if ECB_NO_SMP
629 #define ECB_MEMORY_FENCE do { } while (0) 712 #define ECB_MEMORY_FENCE do { } while (0)
630#endif 713#endif
631 714
715/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
716#if __xlC__ && ECB_CPP
717 #include <builtins.h>
718#endif
719
720#if 1400 <= _MSC_VER
721 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
722#endif
723
632#ifndef ECB_MEMORY_FENCE 724#ifndef ECB_MEMORY_FENCE
633 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 725 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
726 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
634 #if __i386 || __i386__ 727 #if __i386 || __i386__
635 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") 728 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
636 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") 729 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
637 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 730 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
638 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__ 731 #elif ECB_GCC_AMD64
639 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 732 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
640 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") 733 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
641 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 734 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
642 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 735 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
643 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 736 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
737 #elif defined __ARM_ARCH_2__ \
738 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
739 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
740 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
741 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
742 || defined __ARM_ARCH_5TEJ__
743 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
644 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \ 744 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
645 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ 745 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
746 || defined __ARM_ARCH_6T2__
646 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") 747 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
647 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \ 748 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
648 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__ 749 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
649 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") 750 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
650 #elif __aarch64__ 751 #elif __aarch64__
651 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory") 752 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
652 #elif (__sparc || __sparc__) && !__sparcv8 753 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
653 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory") 754 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
654 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") 755 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
655 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") 756 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
656 #elif defined __s390__ || defined __s390x__ 757 #elif defined __s390__ || defined __s390x__
657 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") 758 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
680 #if ECB_GCC_VERSION(4,7) 781 #if ECB_GCC_VERSION(4,7)
681 /* see comment below (stdatomic.h) about the C11 memory model. */ 782 /* see comment below (stdatomic.h) about the C11 memory model. */
682 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST) 783 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
683 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE) 784 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
684 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE) 785 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
786 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
685 787
686 /* The __has_feature syntax from clang is so misdesigned that we cannot use it 788 #elif ECB_CLANG_EXTENSION(c_atomic)
687 * without risking compile time errors with other compilers. We *could*
688 * define our own ecb_clang_has_feature, but I just can't be bothered to work
689 * around this shit time and again.
690 * #elif defined __clang && __has_feature (cxx_atomic)
691 * // see comment below (stdatomic.h) about the C11 memory model. 789 /* see comment below (stdatomic.h) about the C11 memory model. */
692 * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) 790 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
693 * #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE) 791 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
694 * #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE) 792 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
695 */ 793 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
696 794
697 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ 795 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
698 #define ECB_MEMORY_FENCE __sync_synchronize () 796 #define ECB_MEMORY_FENCE __sync_synchronize ()
699 #elif _MSC_VER >= 1500 /* VC++ 2008 */ 797 #elif _MSC_VER >= 1500 /* VC++ 2008 */
700 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */ 798 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
710 #elif defined _WIN32 808 #elif defined _WIN32
711 #include <WinNT.h> 809 #include <WinNT.h>
712 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ 810 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
713 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 811 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
714 #include <mbarrier.h> 812 #include <mbarrier.h>
715 #define ECB_MEMORY_FENCE __machine_rw_barrier () 813 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
716 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier () 814 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
717 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier () 815 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
816 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
718 #elif __xlC__ 817 #elif __xlC__
719 #define ECB_MEMORY_FENCE __sync () 818 #define ECB_MEMORY_FENCE __sync ()
720 #endif 819 #endif
721#endif 820#endif
722 821
723#ifndef ECB_MEMORY_FENCE 822#ifndef ECB_MEMORY_FENCE
724 #if ECB_C11 && !defined __STDC_NO_ATOMICS__ 823 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
725 /* we assume that these memory fences work on all variables/all memory accesses, */ 824 /* we assume that these memory fences work on all variables/all memory accesses, */
726 /* not just C11 atomics and atomic accesses */ 825 /* not just C11 atomics and atomic accesses */
727 #include <stdatomic.h> 826 #include <stdatomic.h>
728 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
729 /* any fence other than seq_cst, which isn't very efficient for us. */
730 /* Why that is, we don't know - either the C11 memory model is quite useless */
731 /* for most usages, or gcc and clang have a bug */
732 /* I *currently* lean towards the latter, and inefficiently implement */
733 /* all three of ecb's fences as a seq_cst fence */
734 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
735 /* for all __atomic_thread_fence's except seq_cst */
736 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst) 827 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
828 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
829 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
737 #endif 830 #endif
738#endif 831#endif
739 832
740#ifndef ECB_MEMORY_FENCE 833#ifndef ECB_MEMORY_FENCE
741 #if !ECB_AVOID_PTHREADS 834 #if !ECB_AVOID_PTHREADS
761 854
762#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE 855#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
763 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 856 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
764#endif 857#endif
765 858
859#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
860 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
861#endif
862
766/*****************************************************************************/ 863/*****************************************************************************/
767 864
768#if __cplusplus 865#if ECB_CPP
769 #define ecb_inline static inline 866 #define ecb_inline static inline
770#elif ECB_GCC_VERSION(2,5) 867#elif ECB_GCC_VERSION(2,5)
771 #define ecb_inline static __inline__ 868 #define ecb_inline static __inline__
772#elif ECB_C99 869#elif ECB_C99
773 #define ecb_inline static inline 870 #define ecb_inline static inline
787 884
788#define ECB_CONCAT_(a, b) a ## b 885#define ECB_CONCAT_(a, b) a ## b
789#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) 886#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
790#define ECB_STRINGIFY_(a) # a 887#define ECB_STRINGIFY_(a) # a
791#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) 888#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
889#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
792 890
793#define ecb_function_ ecb_inline 891#define ecb_function_ ecb_inline
794 892
795#if ECB_GCC_VERSION(3,1) 893#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
796 #define ecb_attribute(attrlist) __attribute__(attrlist) 894 #define ecb_attribute(attrlist) __attribute__ (attrlist)
797 #define ecb_is_constant(expr) __builtin_constant_p (expr)
798 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
799 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
800#else 895#else
801 #define ecb_attribute(attrlist) 896 #define ecb_attribute(attrlist)
897#endif
802 898
899#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
900 #define ecb_is_constant(expr) __builtin_constant_p (expr)
901#else
803 /* possible C11 impl for integral types 902 /* possible C11 impl for integral types
804 typedef struct ecb_is_constant_struct ecb_is_constant_struct; 903 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
805 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */ 904 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
806 905
807 #define ecb_is_constant(expr) 0 906 #define ecb_is_constant(expr) 0
907#endif
908
909#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
910 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
911#else
808 #define ecb_expect(expr,value) (expr) 912 #define ecb_expect(expr,value) (expr)
913#endif
914
915#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
916 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
917#else
809 #define ecb_prefetch(addr,rw,locality) 918 #define ecb_prefetch(addr,rw,locality)
810#endif 919#endif
811 920
812/* no emulation for ecb_decltype */ 921/* no emulation for ecb_decltype */
813#if ECB_GCC_VERSION(4,5) 922#if ECB_CPP11
923 // older implementations might have problems with decltype(x)::type, work around it
924 template<class T> struct ecb_decltype_t { typedef T type; };
814 #define ecb_decltype(x) __decltype(x) 925 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
815#elif ECB_GCC_VERSION(3,0) 926#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
816 #define ecb_decltype(x) __typeof(x) 927 #define ecb_decltype(x) __typeof__ (x)
817#endif 928#endif
818 929
819#if _MSC_VER >= 1300 930#if _MSC_VER >= 1300
820 #define ecb_deprecated __declspec(deprecated) 931 #define ecb_deprecated __declspec (deprecated)
821#else 932#else
822 #define ecb_deprecated ecb_attribute ((__deprecated__)) 933 #define ecb_deprecated ecb_attribute ((__deprecated__))
823#endif 934#endif
824 935
936#if _MSC_VER >= 1500
937 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
938#elif ECB_GCC_VERSION(4,5)
939 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
940#else
941 #define ecb_deprecated_message(msg) ecb_deprecated
942#endif
943
944#if _MSC_VER >= 1400
945 #define ecb_noinline __declspec (noinline)
946#else
825#define ecb_noinline ecb_attribute ((__noinline__)) 947 #define ecb_noinline ecb_attribute ((__noinline__))
948#endif
949
826#define ecb_unused ecb_attribute ((__unused__)) 950#define ecb_unused ecb_attribute ((__unused__))
827#define ecb_const ecb_attribute ((__const__)) 951#define ecb_const ecb_attribute ((__const__))
828#define ecb_pure ecb_attribute ((__pure__)) 952#define ecb_pure ecb_attribute ((__pure__))
829 953
830/* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx __declspec(noreturn) */ 954#if ECB_C11 || __IBMC_NORETURN
831#if ECB_C11 955 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
832 #define ecb_noreturn _Noreturn 956 #define ecb_noreturn _Noreturn
957#elif ECB_CPP11
958 #define ecb_noreturn [[noreturn]]
959#elif _MSC_VER >= 1200
960 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
961 #define ecb_noreturn __declspec (noreturn)
833#else 962#else
834 #define ecb_noreturn ecb_attribute ((__noreturn__)) 963 #define ecb_noreturn ecb_attribute ((__noreturn__))
835#endif 964#endif
836 965
837#if ECB_GCC_VERSION(4,3) 966#if ECB_GCC_VERSION(4,3)
852/* for compatibility to the rest of the world */ 981/* for compatibility to the rest of the world */
853#define ecb_likely(expr) ecb_expect_true (expr) 982#define ecb_likely(expr) ecb_expect_true (expr)
854#define ecb_unlikely(expr) ecb_expect_false (expr) 983#define ecb_unlikely(expr) ecb_expect_false (expr)
855 984
856/* count trailing zero bits and count # of one bits */ 985/* count trailing zero bits and count # of one bits */
857#if ECB_GCC_VERSION(3,4) 986#if ECB_GCC_VERSION(3,4) \
987 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
988 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
989 && ECB_CLANG_BUILTIN(__builtin_popcount))
858 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */ 990 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
859 #define ecb_ld32(x) (__builtin_clz (x) ^ 31) 991 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
860 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) 992 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
861 #define ecb_ctz32(x) __builtin_ctz (x) 993 #define ecb_ctz32(x) __builtin_ctz (x)
862 #define ecb_ctz64(x) __builtin_ctzll (x) 994 #define ecb_ctz64(x) __builtin_ctzll (x)
863 #define ecb_popcount32(x) __builtin_popcount (x) 995 #define ecb_popcount32(x) __builtin_popcount (x)
864 /* no popcountll */ 996 /* no popcountll */
865#else 997#else
866 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; 998 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
867 ecb_function_ int 999 ecb_function_ ecb_const int
868 ecb_ctz32 (uint32_t x) 1000 ecb_ctz32 (uint32_t x)
869 { 1001 {
1002#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1003 unsigned long r;
1004 _BitScanForward (&r, x);
1005 return (int)r;
1006#else
870 int r = 0; 1007 int r = 0;
871 1008
872 x &= ~x + 1; /* this isolates the lowest bit */ 1009 x &= ~x + 1; /* this isolates the lowest bit */
873 1010
874#if ECB_branchless_on_i386 1011#if ECB_branchless_on_i386
884 if (x & 0xff00ff00) r += 8; 1021 if (x & 0xff00ff00) r += 8;
885 if (x & 0xffff0000) r += 16; 1022 if (x & 0xffff0000) r += 16;
886#endif 1023#endif
887 1024
888 return r; 1025 return r;
1026#endif
889 } 1027 }
890 1028
891 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; 1029 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
892 ecb_function_ int 1030 ecb_function_ ecb_const int
893 ecb_ctz64 (uint64_t x) 1031 ecb_ctz64 (uint64_t x)
894 { 1032 {
1033#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1034 unsigned long r;
1035 _BitScanForward64 (&r, x);
1036 return (int)r;
1037#else
895 int shift = x & 0xffffffffU ? 0 : 32; 1038 int shift = x & 0xffffffff ? 0 : 32;
896 return ecb_ctz32 (x >> shift) + shift; 1039 return ecb_ctz32 (x >> shift) + shift;
1040#endif
897 } 1041 }
898 1042
899 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; 1043 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
900 ecb_function_ int 1044 ecb_function_ ecb_const int
901 ecb_popcount32 (uint32_t x) 1045 ecb_popcount32 (uint32_t x)
902 { 1046 {
903 x -= (x >> 1) & 0x55555555; 1047 x -= (x >> 1) & 0x55555555;
904 x = ((x >> 2) & 0x33333333) + (x & 0x33333333); 1048 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
905 x = ((x >> 4) + x) & 0x0f0f0f0f; 1049 x = ((x >> 4) + x) & 0x0f0f0f0f;
906 x *= 0x01010101; 1050 x *= 0x01010101;
907 1051
908 return x >> 24; 1052 return x >> 24;
909 } 1053 }
910 1054
911 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; 1055 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
912 ecb_function_ int ecb_ld32 (uint32_t x) 1056 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
913 { 1057 {
1058#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1059 unsigned long r;
1060 _BitScanReverse (&r, x);
1061 return (int)r;
1062#else
914 int r = 0; 1063 int r = 0;
915 1064
916 if (x >> 16) { x >>= 16; r += 16; } 1065 if (x >> 16) { x >>= 16; r += 16; }
917 if (x >> 8) { x >>= 8; r += 8; } 1066 if (x >> 8) { x >>= 8; r += 8; }
918 if (x >> 4) { x >>= 4; r += 4; } 1067 if (x >> 4) { x >>= 4; r += 4; }
919 if (x >> 2) { x >>= 2; r += 2; } 1068 if (x >> 2) { x >>= 2; r += 2; }
920 if (x >> 1) { r += 1; } 1069 if (x >> 1) { r += 1; }
921 1070
922 return r; 1071 return r;
1072#endif
923 } 1073 }
924 1074
925 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; 1075 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
926 ecb_function_ int ecb_ld64 (uint64_t x) 1076 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
927 { 1077 {
1078#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1079 unsigned long r;
1080 _BitScanReverse64 (&r, x);
1081 return (int)r;
1082#else
928 int r = 0; 1083 int r = 0;
929 1084
930 if (x >> 32) { x >>= 32; r += 32; } 1085 if (x >> 32) { x >>= 32; r += 32; }
931 1086
932 return r + ecb_ld32 (x); 1087 return r + ecb_ld32 (x);
1088#endif
933 } 1089 }
934#endif 1090#endif
935 1091
936ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const; 1092ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
937ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); } 1093ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
938ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const; 1094ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
939ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); } 1095ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
940 1096
941ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const; 1097ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
942ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) 1098ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
943{ 1099{
944 return ( (x * 0x0802U & 0x22110U) 1100 return ( (x * 0x0802U & 0x22110U)
945 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; 1101 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
946} 1102}
947 1103
948ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const; 1104ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
949ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) 1105ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
950{ 1106{
951 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1); 1107 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
952 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2); 1108 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
953 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4); 1109 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
954 x = ( x >> 8 ) | ( x << 8); 1110 x = ( x >> 8 ) | ( x << 8);
955 1111
956 return x; 1112 return x;
957} 1113}
958 1114
959ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const; 1115ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
960ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) 1116ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
961{ 1117{
962 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1); 1118 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
963 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2); 1119 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
964 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4); 1120 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
965 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8); 1121 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
968 return x; 1124 return x;
969} 1125}
970 1126
971/* popcount64 is only available on 64 bit cpus as gcc builtin */ 1127/* popcount64 is only available on 64 bit cpus as gcc builtin */
972/* so for this version we are lazy */ 1128/* so for this version we are lazy */
973ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 1129ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
974ecb_function_ int 1130ecb_function_ ecb_const int
975ecb_popcount64 (uint64_t x) 1131ecb_popcount64 (uint64_t x)
976{ 1132{
977 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); 1133 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
978} 1134}
979 1135
980ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const; 1136ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
981ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const; 1137ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
982ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const; 1138ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
983ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const; 1139ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
984ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const; 1140ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
985ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const; 1141ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
986ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const; 1142ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
987ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const; 1143ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
988 1144
989ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); } 1145ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
990ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); } 1146ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
991ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); } 1147ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
992ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); } 1148ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
993ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } 1149ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
994ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } 1150ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
995ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } 1151ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
996ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } 1152ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
997 1153
998#if ECB_GCC_VERSION(4,3) 1154#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1155 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1156 #define ecb_bswap16(x) __builtin_bswap16 (x)
1157 #else
999 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 1158 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1159 #endif
1000 #define ecb_bswap32(x) __builtin_bswap32 (x) 1160 #define ecb_bswap32(x) __builtin_bswap32 (x)
1001 #define ecb_bswap64(x) __builtin_bswap64 (x) 1161 #define ecb_bswap64(x) __builtin_bswap64 (x)
1162#elif _MSC_VER
1163 #include <stdlib.h>
1164 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1165 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1166 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
1002#else 1167#else
1003 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; 1168 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1004 ecb_function_ uint16_t 1169 ecb_function_ ecb_const uint16_t
1005 ecb_bswap16 (uint16_t x) 1170 ecb_bswap16 (uint16_t x)
1006 { 1171 {
1007 return ecb_rotl16 (x, 8); 1172 return ecb_rotl16 (x, 8);
1008 } 1173 }
1009 1174
1010 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; 1175 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1011 ecb_function_ uint32_t 1176 ecb_function_ ecb_const uint32_t
1012 ecb_bswap32 (uint32_t x) 1177 ecb_bswap32 (uint32_t x)
1013 { 1178 {
1014 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); 1179 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1015 } 1180 }
1016 1181
1017 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; 1182 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1018 ecb_function_ uint64_t 1183 ecb_function_ ecb_const uint64_t
1019 ecb_bswap64 (uint64_t x) 1184 ecb_bswap64 (uint64_t x)
1020 { 1185 {
1021 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); 1186 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1022 } 1187 }
1023#endif 1188#endif
1024 1189
1025#if ECB_GCC_VERSION(4,5) 1190#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1026 #define ecb_unreachable() __builtin_unreachable () 1191 #define ecb_unreachable() __builtin_unreachable ()
1027#else 1192#else
1028 /* this seems to work fine, but gcc always emits a warning for it :/ */ 1193 /* this seems to work fine, but gcc always emits a warning for it :/ */
1029 ecb_inline void ecb_unreachable (void) ecb_noreturn; 1194 ecb_inline ecb_noreturn void ecb_unreachable (void);
1030 ecb_inline void ecb_unreachable (void) { } 1195 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1031#endif 1196#endif
1032 1197
1033/* try to tell the compiler that some condition is definitely true */ 1198/* try to tell the compiler that some condition is definitely true */
1034#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0 1199#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1035 1200
1036ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const; 1201ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1037ecb_inline unsigned char 1202ecb_inline ecb_const uint32_t
1038ecb_byteorder_helper (void) 1203ecb_byteorder_helper (void)
1039{ 1204{
1040 /* the union code still generates code under pressure in gcc, */ 1205 /* the union code still generates code under pressure in gcc, */
1041 /* but less than using pointers, and always seems to */ 1206 /* but less than using pointers, and always seems to */
1042 /* successfully return a constant. */ 1207 /* successfully return a constant. */
1043 /* the reason why we have this horrible preprocessor mess */ 1208 /* the reason why we have this horrible preprocessor mess */
1044 /* is to avoid it in all cases, at least on common architectures */ 1209 /* is to avoid it in all cases, at least on common architectures */
1045 /* or when using a recent enough gcc version (>= 4.6) */ 1210 /* or when using a recent enough gcc version (>= 4.6) */
1046#if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64
1047 return 0x44;
1048#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ 1211#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1212 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1213 #define ECB_LITTLE_ENDIAN 1
1049 return 0x44; 1214 return 0x44332211;
1050#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ 1215#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1216 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1217 #define ECB_BIG_ENDIAN 1
1051 return 0x11; 1218 return 0x11223344;
1052#else 1219#else
1053 union 1220 union
1054 { 1221 {
1222 uint8_t c[4];
1055 uint32_t i; 1223 uint32_t u;
1056 uint8_t c;
1057 } u = { 0x11223344 }; 1224 } u = { 0x11, 0x22, 0x33, 0x44 };
1058 return u.c; 1225 return u.u;
1059#endif 1226#endif
1060} 1227}
1061 1228
1062ecb_inline ecb_bool ecb_big_endian (void) ecb_const; 1229ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1063ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } 1230ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1064ecb_inline ecb_bool ecb_little_endian (void) ecb_const; 1231ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1065ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } 1232ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1066 1233
1067#if ECB_GCC_VERSION(3,0) || ECB_C99 1234#if ECB_GCC_VERSION(3,0) || ECB_C99
1068 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) 1235 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1069#else 1236#else
1070 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) 1237 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1071#endif 1238#endif
1072 1239
1073#if __cplusplus 1240#if ECB_CPP
1074 template<typename T> 1241 template<typename T>
1075 static inline T ecb_div_rd (T val, T div) 1242 static inline T ecb_div_rd (T val, T div)
1076 { 1243 {
1077 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; 1244 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1078 } 1245 }
1095 } 1262 }
1096#else 1263#else
1097 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1264 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1098#endif 1265#endif
1099 1266
1267ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1268ecb_function_ ecb_const uint32_t
1269ecb_binary16_to_binary32 (uint32_t x)
1270{
1271 unsigned int s = (x & 0x8000) << (31 - 15);
1272 int e = (x >> 10) & 0x001f;
1273 unsigned int m = x & 0x03ff;
1274
1275 if (ecb_expect_false (e == 31))
1276 /* infinity or NaN */
1277 e = 255 - (127 - 15);
1278 else if (ecb_expect_false (!e))
1279 {
1280 if (ecb_expect_true (!m))
1281 /* zero, handled by code below by forcing e to 0 */
1282 e = 0 - (127 - 15);
1283 else
1284 {
1285 /* subnormal, renormalise */
1286 unsigned int s = 10 - ecb_ld32 (m);
1287
1288 m = (m << s) & 0x3ff; /* mask implicit bit */
1289 e -= s - 1;
1290 }
1291 }
1292
1293 /* e and m now are normalised, or zero, (or inf or nan) */
1294 e += 127 - 15;
1295
1296 return s | (e << 23) | (m << (23 - 10));
1297}
1298
1299ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1300ecb_function_ ecb_const uint16_t
1301ecb_binary32_to_binary16 (uint32_t x)
1302{
1303 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1304 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1305 unsigned int m = x & 0x007fffff;
1306
1307 x &= 0x7fffffff;
1308
1309 /* if it's within range of binary16 normals, use fast path */
1310 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1311 {
1312 /* mantissa round-to-even */
1313 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1314
1315 /* handle overflow */
1316 if (ecb_expect_false (m >= 0x00800000))
1317 {
1318 m >>= 1;
1319 e += 1;
1320 }
1321
1322 return s | (e << 10) | (m >> (23 - 10));
1323 }
1324
1325 /* handle large numbers and infinity */
1326 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1327 return s | 0x7c00;
1328
1329 /* handle zero, subnormals and small numbers */
1330 if (ecb_expect_true (x < 0x38800000))
1331 {
1332 /* zero */
1333 if (ecb_expect_true (!x))
1334 return s;
1335
1336 /* handle subnormals */
1337
1338 /* too small, will be zero */
1339 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1340 return s;
1341
1342 m |= 0x00800000; /* make implicit bit explicit */
1343
1344 /* very tricky - we need to round to the nearest e (+10) bit value */
1345 {
1346 unsigned int bits = 14 - e;
1347 unsigned int half = (1 << (bits - 1)) - 1;
1348 unsigned int even = (m >> bits) & 1;
1349
1350 /* if this overflows, we will end up with a normalised number */
1351 m = (m + half + even) >> bits;
1352 }
1353
1354 return s | m;
1355 }
1356
1357 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1358 m >>= 13;
1359
1360 return s | 0x7c00 | m | !m;
1361}
1362
1100/*******************************************************************************/ 1363/*******************************************************************************/
1101/* floating point stuff, can be disabled by defining ECB_NO_LIBM */ 1364/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1102 1365
1103/* basically, everything uses "ieee pure-endian" floating point numbers */ 1366/* basically, everything uses "ieee pure-endian" floating point numbers */
1104/* the only noteworthy exception is ancient armle, which uses order 43218765 */ 1367/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1105#if 0 \ 1368#if 0 \
1106 || __i386 || __i386__ \ 1369 || __i386 || __i386__ \
1107 || __amd64 || __amd64__ || __x86_64 || __x86_64__ \ 1370 || ECB_GCC_AMD64 \
1108 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \ 1371 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1109 || defined __s390__ || defined __s390x__ \ 1372 || defined __s390__ || defined __s390x__ \
1110 || defined __mips__ \ 1373 || defined __mips__ \
1111 || defined __alpha__ \ 1374 || defined __alpha__ \
1112 || defined __hppa__ \ 1375 || defined __hppa__ \
1113 || defined __ia64__ \ 1376 || defined __ia64__ \
1114 || defined __m68k__ \ 1377 || defined __m68k__ \
1115 || defined __m88k__ \ 1378 || defined __m88k__ \
1116 || defined __sh__ \ 1379 || defined __sh__ \
1117 || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64 \ 1380 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1118 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \ 1381 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1119 || defined __aarch64__ 1382 || defined __aarch64__
1120 #define ECB_STDFP 1 1383 #define ECB_STDFP 1
1121 #include <string.h> /* for memcpy */ 1384 #include <string.h> /* for memcpy */
1122#else 1385#else
1138 #define ECB_NAN NAN 1401 #define ECB_NAN NAN
1139 #else 1402 #else
1140 #define ECB_NAN ECB_INFINITY 1403 #define ECB_NAN ECB_INFINITY
1141 #endif 1404 #endif
1142 1405
1143 /* converts an ieee half/binary16 to a float */ 1406 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1144 ecb_function_ float ecb_binary16_to_float (uint16_t x) ecb_const; 1407 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1145 ecb_function_ float 1408 #define ecb_frexpf(x,e) frexpf ((x), (e))
1146 ecb_binary16_to_float (uint16_t x) 1409 #else
1147 { 1410 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1148 int e = (x >> 10) & 0x1f; 1411 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1149 int m = x & 0x3ff; 1412 #endif
1150 float r;
1151
1152 if (!e ) r = ldexpf (m , -24);
1153 else if (e != 31) r = ldexpf (m + 0x400, e - 25);
1154 else if (m ) r = ECB_NAN;
1155 else r = ECB_INFINITY;
1156
1157 return x & 0x8000 ? -r : r;
1158 }
1159 1413
1160 /* convert a float to ieee single/binary32 */ 1414 /* convert a float to ieee single/binary32 */
1161 ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const; 1415 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1162 ecb_function_ uint32_t 1416 ecb_function_ ecb_const uint32_t
1163 ecb_float_to_binary32 (float x) 1417 ecb_float_to_binary32 (float x)
1164 { 1418 {
1165 uint32_t r; 1419 uint32_t r;
1166 1420
1167 #if ECB_STDFP 1421 #if ECB_STDFP
1174 if (x == 0e0f ) return 0x00000000U; 1428 if (x == 0e0f ) return 0x00000000U;
1175 if (x > +3.40282346638528860e+38f) return 0x7f800000U; 1429 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1176 if (x < -3.40282346638528860e+38f) return 0xff800000U; 1430 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1177 if (x != x ) return 0x7fbfffffU; 1431 if (x != x ) return 0x7fbfffffU;
1178 1432
1179 m = frexpf (x, &e) * 0x1000000U; 1433 m = ecb_frexpf (x, &e) * 0x1000000U;
1180 1434
1181 r = m & 0x80000000U; 1435 r = m & 0x80000000U;
1182 1436
1183 if (r) 1437 if (r)
1184 m = -m; 1438 m = -m;
1196 1450
1197 return r; 1451 return r;
1198 } 1452 }
1199 1453
1200 /* converts an ieee single/binary32 to a float */ 1454 /* converts an ieee single/binary32 to a float */
1201 ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const; 1455 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1202 ecb_function_ float 1456 ecb_function_ ecb_const float
1203 ecb_binary32_to_float (uint32_t x) 1457 ecb_binary32_to_float (uint32_t x)
1204 { 1458 {
1205 float r; 1459 float r;
1206 1460
1207 #if ECB_STDFP 1461 #if ECB_STDFP
1217 x |= 0x800000U; 1471 x |= 0x800000U;
1218 else 1472 else
1219 e = 1; 1473 e = 1;
1220 1474
1221 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */ 1475 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1222 r = ldexpf (x * (0.5f / 0x800000U), e - 126); 1476 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1223 1477
1224 r = neg ? -r : r; 1478 r = neg ? -r : r;
1225 #endif 1479 #endif
1226 1480
1227 return r; 1481 return r;
1228 } 1482 }
1229 1483
1230 /* convert a double to ieee double/binary64 */ 1484 /* convert a double to ieee double/binary64 */
1231 ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const; 1485 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1232 ecb_function_ uint64_t 1486 ecb_function_ ecb_const uint64_t
1233 ecb_double_to_binary64 (double x) 1487 ecb_double_to_binary64 (double x)
1234 { 1488 {
1235 uint64_t r; 1489 uint64_t r;
1236 1490
1237 #if ECB_STDFP 1491 #if ECB_STDFP
1266 1520
1267 return r; 1521 return r;
1268 } 1522 }
1269 1523
1270 /* converts an ieee double/binary64 to a double */ 1524 /* converts an ieee double/binary64 to a double */
1271 ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const; 1525 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1272 ecb_function_ double 1526 ecb_function_ ecb_const double
1273 ecb_binary64_to_double (uint64_t x) 1527 ecb_binary64_to_double (uint64_t x)
1274 { 1528 {
1275 double r; 1529 double r;
1276 1530
1277 #if ECB_STDFP 1531 #if ECB_STDFP
1295 #endif 1549 #endif
1296 1550
1297 return r; 1551 return r;
1298 } 1552 }
1299 1553
1554 /* convert a float to ieee half/binary16 */
1555 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1556 ecb_function_ ecb_const uint16_t
1557 ecb_float_to_binary16 (float x)
1558 {
1559 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1560 }
1561
1562 /* convert an ieee half/binary16 to float */
1563 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1564 ecb_function_ ecb_const float
1565 ecb_binary16_to_float (uint16_t x)
1566 {
1567 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1568 }
1569
1300#endif 1570#endif
1301 1571
1302#endif 1572#endif
1303 1573
1304/* ECB.H END */ 1574/* ECB.H END */
1305 1575
1306#if ECB_MEMORY_FENCE_NEEDS_PTHREADS 1576#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1307/* if your architecture doesn't need memory fences, e.g. because it is 1577/* if your architecture doesn't need memory fences, e.g. because it is
1308 * single-cpu/core, or if you use libev in a project that doesn't use libev 1578 * single-cpu/core, or if you use libev in a project that doesn't use libev
1309 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling 1579 * from multiple threads, then you can define ECB_NO_THREADS when compiling
1310 * libev, in which cases the memory fences become nops. 1580 * libev, in which cases the memory fences become nops.
1311 * alternatively, you can remove this #error and link against libpthread, 1581 * alternatively, you can remove this #error and link against libpthread,
1312 * which will then provide the memory fences. 1582 * which will then provide the memory fences.
1313 */ 1583 */
1314# error "memory fences not defined for your architecture, please report" 1584# error "memory fences not defined for your architecture, please report"
1318# define ECB_MEMORY_FENCE do { } while (0) 1588# define ECB_MEMORY_FENCE do { } while (0)
1319# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 1589# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1320# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 1590# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1321#endif 1591#endif
1322 1592
1323#define expect_false(cond) ecb_expect_false (cond)
1324#define expect_true(cond) ecb_expect_true (cond)
1325#define noinline ecb_noinline
1326
1327#define inline_size ecb_inline 1593#define inline_size ecb_inline
1328 1594
1329#if EV_FEATURE_CODE 1595#if EV_FEATURE_CODE
1330# define inline_speed ecb_inline 1596# define inline_speed ecb_inline
1331#else 1597#else
1332# define inline_speed static noinline 1598# define inline_speed ecb_noinline static
1333#endif 1599#endif
1600
1601/*****************************************************************************/
1602/* raw syscall wrappers */
1603
1604#if EV_NEED_SYSCALL
1605
1606#include <sys/syscall.h>
1607
1608/*
1609 * define some syscall wrappers for common architectures
1610 * this is mostly for nice looks during debugging, not performance.
1611 * our syscalls return < 0, not == -1, on error. which is good
1612 * enough for linux aio.
1613 * TODO: arm is also common nowadays, maybe even mips and x86
1614 * TODO: after implementing this, it suddenly looks like overkill, but its hard to remove...
1615 */
1616#if __GNUC__ && __linux && ECB_AMD64 && !defined __OPTIMIZE_SIZE__
1617 /* the costly errno access probably kills this for size optimisation */
1618
1619 #define ev_syscall(nr,narg,arg1,arg2,arg3,arg4,arg5,arg6) \
1620 ({ \
1621 long res; \
1622 register unsigned long r6 __asm__ ("r9" ); \
1623 register unsigned long r5 __asm__ ("r8" ); \
1624 register unsigned long r4 __asm__ ("r10"); \
1625 register unsigned long r3 __asm__ ("rdx"); \
1626 register unsigned long r2 __asm__ ("rsi"); \
1627 register unsigned long r1 __asm__ ("rdi"); \
1628 if (narg >= 6) r6 = (unsigned long)(arg6); \
1629 if (narg >= 5) r5 = (unsigned long)(arg5); \
1630 if (narg >= 4) r4 = (unsigned long)(arg4); \
1631 if (narg >= 3) r3 = (unsigned long)(arg3); \
1632 if (narg >= 2) r2 = (unsigned long)(arg2); \
1633 if (narg >= 1) r1 = (unsigned long)(arg1); \
1634 __asm__ __volatile__ ( \
1635 "syscall\n\t" \
1636 : "=a" (res) \
1637 : "0" (nr), "r" (r1), "r" (r2), "r" (r3), "r" (r4), "r" (r5) \
1638 : "cc", "r11", "cx", "memory"); \
1639 errno = -res; \
1640 res; \
1641 })
1642
1643#endif
1644
1645#ifdef ev_syscall
1646 #define ev_syscall0(nr) ev_syscall (nr, 0, 0, 0, 0, 0, 0, 0)
1647 #define ev_syscall1(nr,arg1) ev_syscall (nr, 1, arg1, 0, 0, 0, 0, 0)
1648 #define ev_syscall2(nr,arg1,arg2) ev_syscall (nr, 2, arg1, arg2, 0, 0, 0, 0)
1649 #define ev_syscall3(nr,arg1,arg2,arg3) ev_syscall (nr, 3, arg1, arg2, arg3, 0, 0, 0)
1650 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) ev_syscall (nr, 3, arg1, arg2, arg3, arg4, 0, 0)
1651 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) ev_syscall (nr, 5, arg1, arg2, arg3, arg4, arg5, 0)
1652 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) ev_syscall (nr, 6, arg1, arg2, arg3, arg4, arg5,arg6)
1653#else
1654 #define ev_syscall0(nr) syscall (nr)
1655 #define ev_syscall1(nr,arg1) syscall (nr, arg1)
1656 #define ev_syscall2(nr,arg1,arg2) syscall (nr, arg1, arg2)
1657 #define ev_syscall3(nr,arg1,arg2,arg3) syscall (nr, arg1, arg2, arg3)
1658 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) syscall (nr, arg1, arg2, arg3, arg4)
1659 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) syscall (nr, arg1, arg2, arg3, arg4, arg5)
1660 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) syscall (nr, arg1, arg2, arg3, arg4, arg5,arg6)
1661#endif
1662
1663#endif
1664
1665/*****************************************************************************/
1334 1666
1335#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1667#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
1336 1668
1337#if EV_MINPRI == EV_MAXPRI 1669#if EV_MINPRI == EV_MAXPRI
1338# define ABSPRI(w) (((W)w), 0) 1670# define ABSPRI(w) (((W)w), 0)
1339#else 1671#else
1340# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1672# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
1341#endif 1673#endif
1342 1674
1343#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1675#define EMPTY /* required for microsofts broken pseudo-c compiler */
1344#define EMPTY2(a,b) /* used to suppress some warnings */
1345 1676
1346typedef ev_watcher *W; 1677typedef ev_watcher *W;
1347typedef ev_watcher_list *WL; 1678typedef ev_watcher_list *WL;
1348typedef ev_watcher_time *WT; 1679typedef ev_watcher_time *WT;
1349 1680
1374# include "ev_win32.c" 1705# include "ev_win32.c"
1375#endif 1706#endif
1376 1707
1377/*****************************************************************************/ 1708/*****************************************************************************/
1378 1709
1710#if EV_USE_LINUXAIO
1711# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1712#endif
1713
1379/* define a suitable floor function (only used by periodics atm) */ 1714/* define a suitable floor function (only used by periodics atm) */
1380 1715
1381#if EV_USE_FLOOR 1716#if EV_USE_FLOOR
1382# include <math.h> 1717# include <math.h>
1383# define ev_floor(v) floor (v) 1718# define ev_floor(v) floor (v)
1384#else 1719#else
1385 1720
1386#include <float.h> 1721#include <float.h>
1387 1722
1388/* a floor() replacement function, should be independent of ev_tstamp type */ 1723/* a floor() replacement function, should be independent of ev_tstamp type */
1724ecb_noinline
1389static ev_tstamp noinline 1725static ev_tstamp
1390ev_floor (ev_tstamp v) 1726ev_floor (ev_tstamp v)
1391{ 1727{
1392 /* the choice of shift factor is not terribly important */ 1728 /* the choice of shift factor is not terribly important */
1393#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1729#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1394 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1730 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1395#else 1731#else
1396 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; 1732 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1397#endif 1733#endif
1398 1734
1735 /* special treatment for negative arguments */
1736 if (ecb_expect_false (v < 0.))
1737 {
1738 ev_tstamp f = -ev_floor (-v);
1739
1740 return f - (f == v ? 0 : 1);
1741 }
1742
1399 /* argument too large for an unsigned long? */ 1743 /* argument too large for an unsigned long? then reduce it */
1400 if (expect_false (v >= shift)) 1744 if (ecb_expect_false (v >= shift))
1401 { 1745 {
1402 ev_tstamp f; 1746 ev_tstamp f;
1403 1747
1404 if (v == v - 1.) 1748 if (v == v - 1.)
1405 return v; /* very large number */ 1749 return v; /* very large numbers are assumed to be integer */
1406 1750
1407 f = shift * ev_floor (v * (1. / shift)); 1751 f = shift * ev_floor (v * (1. / shift));
1408 return f + ev_floor (v - f); 1752 return f + ev_floor (v - f);
1409 } 1753 }
1410 1754
1411 /* special treatment for negative args? */
1412 if (expect_false (v < 0.))
1413 {
1414 ev_tstamp f = -ev_floor (-v);
1415
1416 return f - (f == v ? 0 : 1);
1417 }
1418
1419 /* fits into an unsigned long */ 1755 /* fits into an unsigned long */
1420 return (unsigned long)v; 1756 return (unsigned long)v;
1421} 1757}
1422 1758
1423#endif 1759#endif
1426 1762
1427#ifdef __linux 1763#ifdef __linux
1428# include <sys/utsname.h> 1764# include <sys/utsname.h>
1429#endif 1765#endif
1430 1766
1431static unsigned int noinline ecb_cold 1767ecb_noinline ecb_cold
1768static unsigned int
1432ev_linux_version (void) 1769ev_linux_version (void)
1433{ 1770{
1434#ifdef __linux 1771#ifdef __linux
1435 unsigned int v = 0; 1772 unsigned int v = 0;
1436 struct utsname buf; 1773 struct utsname buf;
1465} 1802}
1466 1803
1467/*****************************************************************************/ 1804/*****************************************************************************/
1468 1805
1469#if EV_AVOID_STDIO 1806#if EV_AVOID_STDIO
1470static void noinline ecb_cold 1807ecb_noinline ecb_cold
1808static void
1471ev_printerr (const char *msg) 1809ev_printerr (const char *msg)
1472{ 1810{
1473 write (STDERR_FILENO, msg, strlen (msg)); 1811 write (STDERR_FILENO, msg, strlen (msg));
1474} 1812}
1475#endif 1813#endif
1476 1814
1477static void (*syserr_cb)(const char *msg) EV_THROW; 1815static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
1478 1816
1479void ecb_cold 1817ecb_cold
1818void
1480ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW 1819ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
1481{ 1820{
1482 syserr_cb = cb; 1821 syserr_cb = cb;
1483} 1822}
1484 1823
1485static void noinline ecb_cold 1824ecb_noinline ecb_cold
1825static void
1486ev_syserr (const char *msg) 1826ev_syserr (const char *msg)
1487{ 1827{
1488 if (!msg) 1828 if (!msg)
1489 msg = "(libev) system error"; 1829 msg = "(libev) system error";
1490 1830
1503 abort (); 1843 abort ();
1504 } 1844 }
1505} 1845}
1506 1846
1507static void * 1847static void *
1508ev_realloc_emul (void *ptr, long size) EV_THROW 1848ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
1509{ 1849{
1510 /* some systems, notably openbsd and darwin, fail to properly 1850 /* some systems, notably openbsd and darwin, fail to properly
1511 * implement realloc (x, 0) (as required by both ansi c-89 and 1851 * implement realloc (x, 0) (as required by both ansi c-89 and
1512 * the single unix specification, so work around them here. 1852 * the single unix specification, so work around them here.
1513 * recently, also (at least) fedora and debian started breaking it, 1853 * recently, also (at least) fedora and debian started breaking it,
1519 1859
1520 free (ptr); 1860 free (ptr);
1521 return 0; 1861 return 0;
1522} 1862}
1523 1863
1524static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul; 1864static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
1525 1865
1526void ecb_cold 1866ecb_cold
1867void
1527ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW 1868ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
1528{ 1869{
1529 alloc = cb; 1870 alloc = cb;
1530} 1871}
1531 1872
1532inline_speed void * 1873inline_speed void *
1559typedef struct 1900typedef struct
1560{ 1901{
1561 WL head; 1902 WL head;
1562 unsigned char events; /* the events watched for */ 1903 unsigned char events; /* the events watched for */
1563 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 1904 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
1564 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1905 unsigned char emask; /* some backends store the actual kernel mask in here */
1565 unsigned char unused; 1906 unsigned char eflags; /* flags field for use by backends */
1566#if EV_USE_EPOLL 1907#if EV_USE_EPOLL
1567 unsigned int egen; /* generation counter to counter epoll bugs */ 1908 unsigned int egen; /* generation counter to counter epoll bugs */
1568#endif 1909#endif
1569#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 1910#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1570 SOCKET handle; 1911 SOCKET handle;
1634 static int ev_default_loop_ptr; 1975 static int ev_default_loop_ptr;
1635 1976
1636#endif 1977#endif
1637 1978
1638#if EV_FEATURE_API 1979#if EV_FEATURE_API
1639# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1980# define EV_RELEASE_CB if (ecb_expect_false (release_cb)) release_cb (EV_A)
1640# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 1981# define EV_ACQUIRE_CB if (ecb_expect_false (acquire_cb)) acquire_cb (EV_A)
1641# define EV_INVOKE_PENDING invoke_cb (EV_A) 1982# define EV_INVOKE_PENDING invoke_cb (EV_A)
1642#else 1983#else
1643# define EV_RELEASE_CB (void)0 1984# define EV_RELEASE_CB (void)0
1644# define EV_ACQUIRE_CB (void)0 1985# define EV_ACQUIRE_CB (void)0
1645# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1986# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
1649 1990
1650/*****************************************************************************/ 1991/*****************************************************************************/
1651 1992
1652#ifndef EV_HAVE_EV_TIME 1993#ifndef EV_HAVE_EV_TIME
1653ev_tstamp 1994ev_tstamp
1654ev_time (void) EV_THROW 1995ev_time (void) EV_NOEXCEPT
1655{ 1996{
1656#if EV_USE_REALTIME 1997#if EV_USE_REALTIME
1657 if (expect_true (have_realtime)) 1998 if (ecb_expect_true (have_realtime))
1658 { 1999 {
1659 struct timespec ts; 2000 struct timespec ts;
1660 clock_gettime (CLOCK_REALTIME, &ts); 2001 clock_gettime (CLOCK_REALTIME, &ts);
1661 return ts.tv_sec + ts.tv_nsec * 1e-9; 2002 return EV_TS_GET (ts);
1662 } 2003 }
1663#endif 2004#endif
1664 2005
1665 struct timeval tv; 2006 struct timeval tv;
1666 gettimeofday (&tv, 0); 2007 gettimeofday (&tv, 0);
1667 return tv.tv_sec + tv.tv_usec * 1e-6; 2008 return EV_TV_GET (tv);
1668} 2009}
1669#endif 2010#endif
1670 2011
1671inline_size ev_tstamp 2012inline_size ev_tstamp
1672get_clock (void) 2013get_clock (void)
1673{ 2014{
1674#if EV_USE_MONOTONIC 2015#if EV_USE_MONOTONIC
1675 if (expect_true (have_monotonic)) 2016 if (ecb_expect_true (have_monotonic))
1676 { 2017 {
1677 struct timespec ts; 2018 struct timespec ts;
1678 clock_gettime (CLOCK_MONOTONIC, &ts); 2019 clock_gettime (CLOCK_MONOTONIC, &ts);
1679 return ts.tv_sec + ts.tv_nsec * 1e-9; 2020 return EV_TS_GET (ts);
1680 } 2021 }
1681#endif 2022#endif
1682 2023
1683 return ev_time (); 2024 return ev_time ();
1684} 2025}
1685 2026
1686#if EV_MULTIPLICITY 2027#if EV_MULTIPLICITY
1687ev_tstamp 2028ev_tstamp
1688ev_now (EV_P) EV_THROW 2029ev_now (EV_P) EV_NOEXCEPT
1689{ 2030{
1690 return ev_rt_now; 2031 return ev_rt_now;
1691} 2032}
1692#endif 2033#endif
1693 2034
1694void 2035void
1695ev_sleep (ev_tstamp delay) EV_THROW 2036ev_sleep (ev_tstamp delay) EV_NOEXCEPT
1696{ 2037{
1697 if (delay > 0.) 2038 if (delay > 0.)
1698 { 2039 {
1699#if EV_USE_NANOSLEEP 2040#if EV_USE_NANOSLEEP
1700 struct timespec ts; 2041 struct timespec ts;
1701 2042
1702 EV_TS_SET (ts, delay); 2043 EV_TS_SET (ts, delay);
1703 nanosleep (&ts, 0); 2044 nanosleep (&ts, 0);
1704#elif defined _WIN32 2045#elif defined _WIN32
2046 /* maybe this should round up, as ms is very low resolution */
2047 /* compared to select (µs) or nanosleep (ns) */
1705 Sleep ((unsigned long)(delay * 1e3)); 2048 Sleep ((unsigned long)(EV_TS_TO_MSEC (delay)));
1706#else 2049#else
1707 struct timeval tv; 2050 struct timeval tv;
1708 2051
1709 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 2052 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
1710 /* something not guaranteed by newer posix versions, but guaranteed */ 2053 /* something not guaranteed by newer posix versions, but guaranteed */
1740 } 2083 }
1741 2084
1742 return ncur; 2085 return ncur;
1743} 2086}
1744 2087
1745static void * noinline ecb_cold 2088ecb_noinline ecb_cold
2089static void *
1746array_realloc (int elem, void *base, int *cur, int cnt) 2090array_realloc (int elem, void *base, int *cur, int cnt)
1747{ 2091{
1748 *cur = array_nextsize (elem, *cur, cnt); 2092 *cur = array_nextsize (elem, *cur, cnt);
1749 return ev_realloc (base, elem * *cur); 2093 return ev_realloc (base, elem * *cur);
1750} 2094}
1751 2095
2096#define array_needsize_noinit(base,offset,count)
2097
1752#define array_init_zero(base,count) \ 2098#define array_needsize_zerofill(base,offset,count) \
1753 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2099 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
1754 2100
1755#define array_needsize(type,base,cur,cnt,init) \ 2101#define array_needsize(type,base,cur,cnt,init) \
1756 if (expect_false ((cnt) > (cur))) \ 2102 if (ecb_expect_false ((cnt) > (cur))) \
1757 { \ 2103 { \
1758 int ecb_unused ocur_ = (cur); \ 2104 ecb_unused int ocur_ = (cur); \
1759 (base) = (type *)array_realloc \ 2105 (base) = (type *)array_realloc \
1760 (sizeof (type), (base), &(cur), (cnt)); \ 2106 (sizeof (type), (base), &(cur), (cnt)); \
1761 init ((base) + (ocur_), (cur) - ocur_); \ 2107 init ((base), ocur_, ((cur) - ocur_)); \
1762 } 2108 }
1763 2109
1764#if 0 2110#if 0
1765#define array_slim(type,stem) \ 2111#define array_slim(type,stem) \
1766 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2112 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
1775 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2121 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
1776 2122
1777/*****************************************************************************/ 2123/*****************************************************************************/
1778 2124
1779/* dummy callback for pending events */ 2125/* dummy callback for pending events */
1780static void noinline 2126ecb_noinline
2127static void
1781pendingcb (EV_P_ ev_prepare *w, int revents) 2128pendingcb (EV_P_ ev_prepare *w, int revents)
1782{ 2129{
1783} 2130}
1784 2131
1785void noinline 2132ecb_noinline
2133void
1786ev_feed_event (EV_P_ void *w, int revents) EV_THROW 2134ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
1787{ 2135{
1788 W w_ = (W)w; 2136 W w_ = (W)w;
1789 int pri = ABSPRI (w_); 2137 int pri = ABSPRI (w_);
1790 2138
1791 if (expect_false (w_->pending)) 2139 if (ecb_expect_false (w_->pending))
1792 pendings [pri][w_->pending - 1].events |= revents; 2140 pendings [pri][w_->pending - 1].events |= revents;
1793 else 2141 else
1794 { 2142 {
1795 w_->pending = ++pendingcnt [pri]; 2143 w_->pending = ++pendingcnt [pri];
1796 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2144 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
1797 pendings [pri][w_->pending - 1].w = w_; 2145 pendings [pri][w_->pending - 1].w = w_;
1798 pendings [pri][w_->pending - 1].events = revents; 2146 pendings [pri][w_->pending - 1].events = revents;
1799 } 2147 }
1800 2148
1801 pendingpri = NUMPRI - 1; 2149 pendingpri = NUMPRI - 1;
1802} 2150}
1803 2151
1804inline_speed void 2152inline_speed void
1805feed_reverse (EV_P_ W w) 2153feed_reverse (EV_P_ W w)
1806{ 2154{
1807 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2155 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
1808 rfeeds [rfeedcnt++] = w; 2156 rfeeds [rfeedcnt++] = w;
1809} 2157}
1810 2158
1811inline_size void 2159inline_size void
1812feed_reverse_done (EV_P_ int revents) 2160feed_reverse_done (EV_P_ int revents)
1847inline_speed void 2195inline_speed void
1848fd_event (EV_P_ int fd, int revents) 2196fd_event (EV_P_ int fd, int revents)
1849{ 2197{
1850 ANFD *anfd = anfds + fd; 2198 ANFD *anfd = anfds + fd;
1851 2199
1852 if (expect_true (!anfd->reify)) 2200 if (ecb_expect_true (!anfd->reify))
1853 fd_event_nocheck (EV_A_ fd, revents); 2201 fd_event_nocheck (EV_A_ fd, revents);
1854} 2202}
1855 2203
1856void 2204void
1857ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW 2205ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
1858{ 2206{
1859 if (fd >= 0 && fd < anfdmax) 2207 if (fd >= 0 && fd < anfdmax)
1860 fd_event_nocheck (EV_A_ fd, revents); 2208 fd_event_nocheck (EV_A_ fd, revents);
1861} 2209}
1862 2210
1899 ev_io *w; 2247 ev_io *w;
1900 2248
1901 unsigned char o_events = anfd->events; 2249 unsigned char o_events = anfd->events;
1902 unsigned char o_reify = anfd->reify; 2250 unsigned char o_reify = anfd->reify;
1903 2251
1904 anfd->reify = 0; 2252 anfd->reify = 0;
1905 2253
1906 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 2254 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
1907 { 2255 {
1908 anfd->events = 0; 2256 anfd->events = 0;
1909 2257
1910 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2258 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1911 anfd->events |= (unsigned char)w->events; 2259 anfd->events |= (unsigned char)w->events;
1920 2268
1921 fdchangecnt = 0; 2269 fdchangecnt = 0;
1922} 2270}
1923 2271
1924/* something about the given fd changed */ 2272/* something about the given fd changed */
1925inline_size void 2273inline_size
2274void
1926fd_change (EV_P_ int fd, int flags) 2275fd_change (EV_P_ int fd, int flags)
1927{ 2276{
1928 unsigned char reify = anfds [fd].reify; 2277 unsigned char reify = anfds [fd].reify;
1929 anfds [fd].reify |= flags; 2278 anfds [fd].reify |= flags;
1930 2279
1931 if (expect_true (!reify)) 2280 if (ecb_expect_true (!reify))
1932 { 2281 {
1933 ++fdchangecnt; 2282 ++fdchangecnt;
1934 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2283 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
1935 fdchanges [fdchangecnt - 1] = fd; 2284 fdchanges [fdchangecnt - 1] = fd;
1936 } 2285 }
1937} 2286}
1938 2287
1939/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2288/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1940inline_speed void ecb_cold 2289inline_speed ecb_cold void
1941fd_kill (EV_P_ int fd) 2290fd_kill (EV_P_ int fd)
1942{ 2291{
1943 ev_io *w; 2292 ev_io *w;
1944 2293
1945 while ((w = (ev_io *)anfds [fd].head)) 2294 while ((w = (ev_io *)anfds [fd].head))
1948 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2297 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1949 } 2298 }
1950} 2299}
1951 2300
1952/* check whether the given fd is actually valid, for error recovery */ 2301/* check whether the given fd is actually valid, for error recovery */
1953inline_size int ecb_cold 2302inline_size ecb_cold int
1954fd_valid (int fd) 2303fd_valid (int fd)
1955{ 2304{
1956#ifdef _WIN32 2305#ifdef _WIN32
1957 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2306 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1958#else 2307#else
1959 return fcntl (fd, F_GETFD) != -1; 2308 return fcntl (fd, F_GETFD) != -1;
1960#endif 2309#endif
1961} 2310}
1962 2311
1963/* called on EBADF to verify fds */ 2312/* called on EBADF to verify fds */
1964static void noinline ecb_cold 2313ecb_noinline ecb_cold
2314static void
1965fd_ebadf (EV_P) 2315fd_ebadf (EV_P)
1966{ 2316{
1967 int fd; 2317 int fd;
1968 2318
1969 for (fd = 0; fd < anfdmax; ++fd) 2319 for (fd = 0; fd < anfdmax; ++fd)
1971 if (!fd_valid (fd) && errno == EBADF) 2321 if (!fd_valid (fd) && errno == EBADF)
1972 fd_kill (EV_A_ fd); 2322 fd_kill (EV_A_ fd);
1973} 2323}
1974 2324
1975/* called on ENOMEM in select/poll to kill some fds and retry */ 2325/* called on ENOMEM in select/poll to kill some fds and retry */
1976static void noinline ecb_cold 2326ecb_noinline ecb_cold
2327static void
1977fd_enomem (EV_P) 2328fd_enomem (EV_P)
1978{ 2329{
1979 int fd; 2330 int fd;
1980 2331
1981 for (fd = anfdmax; fd--; ) 2332 for (fd = anfdmax; fd--; )
1985 break; 2336 break;
1986 } 2337 }
1987} 2338}
1988 2339
1989/* usually called after fork if backend needs to re-arm all fds from scratch */ 2340/* usually called after fork if backend needs to re-arm all fds from scratch */
1990static void noinline 2341ecb_noinline
2342static void
1991fd_rearm_all (EV_P) 2343fd_rearm_all (EV_P)
1992{ 2344{
1993 int fd; 2345 int fd;
1994 2346
1995 for (fd = 0; fd < anfdmax; ++fd) 2347 for (fd = 0; fd < anfdmax; ++fd)
2048 ev_tstamp minat; 2400 ev_tstamp minat;
2049 ANHE *minpos; 2401 ANHE *minpos;
2050 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2402 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
2051 2403
2052 /* find minimum child */ 2404 /* find minimum child */
2053 if (expect_true (pos + DHEAP - 1 < E)) 2405 if (ecb_expect_true (pos + DHEAP - 1 < E))
2054 { 2406 {
2055 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2407 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
2056 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2408 if ( minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
2057 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2409 if ( minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
2058 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2410 if ( minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
2059 } 2411 }
2060 else if (pos < E) 2412 else if (pos < E)
2061 { 2413 {
2062 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2414 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
2063 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2415 if (pos + 1 < E && minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
2064 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2416 if (pos + 2 < E && minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
2065 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2417 if (pos + 3 < E && minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
2066 } 2418 }
2067 else 2419 else
2068 break; 2420 break;
2069 2421
2070 if (ANHE_at (he) <= minat) 2422 if (ANHE_at (he) <= minat)
2078 2430
2079 heap [k] = he; 2431 heap [k] = he;
2080 ev_active (ANHE_w (he)) = k; 2432 ev_active (ANHE_w (he)) = k;
2081} 2433}
2082 2434
2083#else /* 4HEAP */ 2435#else /* not 4HEAP */
2084 2436
2085#define HEAP0 1 2437#define HEAP0 1
2086#define HPARENT(k) ((k) >> 1) 2438#define HPARENT(k) ((k) >> 1)
2087#define UPHEAP_DONE(p,k) (!(p)) 2439#define UPHEAP_DONE(p,k) (!(p))
2088 2440
2176 2528
2177/*****************************************************************************/ 2529/*****************************************************************************/
2178 2530
2179#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2531#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2180 2532
2181static void noinline ecb_cold 2533ecb_noinline ecb_cold
2534static void
2182evpipe_init (EV_P) 2535evpipe_init (EV_P)
2183{ 2536{
2184 if (!ev_is_active (&pipe_w)) 2537 if (!ev_is_active (&pipe_w))
2185 { 2538 {
2186 int fds [2]; 2539 int fds [2];
2226inline_speed void 2579inline_speed void
2227evpipe_write (EV_P_ EV_ATOMIC_T *flag) 2580evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2228{ 2581{
2229 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */ 2582 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2230 2583
2231 if (expect_true (*flag)) 2584 if (ecb_expect_true (*flag))
2232 return; 2585 return;
2233 2586
2234 *flag = 1; 2587 *flag = 1;
2235 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */ 2588 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2236 2589
2257#endif 2610#endif
2258 { 2611 {
2259#ifdef _WIN32 2612#ifdef _WIN32
2260 WSABUF buf; 2613 WSABUF buf;
2261 DWORD sent; 2614 DWORD sent;
2262 buf.buf = &buf; 2615 buf.buf = (char *)&buf;
2263 buf.len = 1; 2616 buf.len = 1;
2264 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0); 2617 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2265#else 2618#else
2266 write (evpipe [1], &(evpipe [1]), 1); 2619 write (evpipe [1], &(evpipe [1]), 1);
2267#endif 2620#endif
2313 sig_pending = 0; 2666 sig_pending = 0;
2314 2667
2315 ECB_MEMORY_FENCE; 2668 ECB_MEMORY_FENCE;
2316 2669
2317 for (i = EV_NSIG - 1; i--; ) 2670 for (i = EV_NSIG - 1; i--; )
2318 if (expect_false (signals [i].pending)) 2671 if (ecb_expect_false (signals [i].pending))
2319 ev_feed_signal_event (EV_A_ i + 1); 2672 ev_feed_signal_event (EV_A_ i + 1);
2320 } 2673 }
2321#endif 2674#endif
2322 2675
2323#if EV_ASYNC_ENABLE 2676#if EV_ASYNC_ENABLE
2339} 2692}
2340 2693
2341/*****************************************************************************/ 2694/*****************************************************************************/
2342 2695
2343void 2696void
2344ev_feed_signal (int signum) EV_THROW 2697ev_feed_signal (int signum) EV_NOEXCEPT
2345{ 2698{
2346#if EV_MULTIPLICITY 2699#if EV_MULTIPLICITY
2347 EV_P; 2700 EV_P;
2348 ECB_MEMORY_FENCE_ACQUIRE; 2701 ECB_MEMORY_FENCE_ACQUIRE;
2349 EV_A = signals [signum - 1].loop; 2702 EV_A = signals [signum - 1].loop;
2364#endif 2717#endif
2365 2718
2366 ev_feed_signal (signum); 2719 ev_feed_signal (signum);
2367} 2720}
2368 2721
2369void noinline 2722ecb_noinline
2723void
2370ev_feed_signal_event (EV_P_ int signum) EV_THROW 2724ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
2371{ 2725{
2372 WL w; 2726 WL w;
2373 2727
2374 if (expect_false (signum <= 0 || signum >= EV_NSIG)) 2728 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
2375 return; 2729 return;
2376 2730
2377 --signum; 2731 --signum;
2378 2732
2379#if EV_MULTIPLICITY 2733#if EV_MULTIPLICITY
2380 /* it is permissible to try to feed a signal to the wrong loop */ 2734 /* it is permissible to try to feed a signal to the wrong loop */
2381 /* or, likely more useful, feeding a signal nobody is waiting for */ 2735 /* or, likely more useful, feeding a signal nobody is waiting for */
2382 2736
2383 if (expect_false (signals [signum].loop != EV_A)) 2737 if (ecb_expect_false (signals [signum].loop != EV_A))
2384 return; 2738 return;
2385#endif 2739#endif
2386 2740
2387 signals [signum].pending = 0; 2741 signals [signum].pending = 0;
2388 ECB_MEMORY_FENCE_RELEASE; 2742 ECB_MEMORY_FENCE_RELEASE;
2484# include "ev_kqueue.c" 2838# include "ev_kqueue.c"
2485#endif 2839#endif
2486#if EV_USE_EPOLL 2840#if EV_USE_EPOLL
2487# include "ev_epoll.c" 2841# include "ev_epoll.c"
2488#endif 2842#endif
2843#if EV_USE_LINUXAIO
2844# include "ev_linuxaio.c"
2845#endif
2846#if EV_USE_IOURING
2847# include "ev_iouring.c"
2848#endif
2489#if EV_USE_POLL 2849#if EV_USE_POLL
2490# include "ev_poll.c" 2850# include "ev_poll.c"
2491#endif 2851#endif
2492#if EV_USE_SELECT 2852#if EV_USE_SELECT
2493# include "ev_select.c" 2853# include "ev_select.c"
2494#endif 2854#endif
2495 2855
2496int ecb_cold 2856ecb_cold int
2497ev_version_major (void) EV_THROW 2857ev_version_major (void) EV_NOEXCEPT
2498{ 2858{
2499 return EV_VERSION_MAJOR; 2859 return EV_VERSION_MAJOR;
2500} 2860}
2501 2861
2502int ecb_cold 2862ecb_cold int
2503ev_version_minor (void) EV_THROW 2863ev_version_minor (void) EV_NOEXCEPT
2504{ 2864{
2505 return EV_VERSION_MINOR; 2865 return EV_VERSION_MINOR;
2506} 2866}
2507 2867
2508/* return true if we are running with elevated privileges and should ignore env variables */ 2868/* return true if we are running with elevated privileges and should ignore env variables */
2509int inline_size ecb_cold 2869inline_size ecb_cold int
2510enable_secure (void) 2870enable_secure (void)
2511{ 2871{
2512#ifdef _WIN32 2872#ifdef _WIN32
2513 return 0; 2873 return 0;
2514#else 2874#else
2515 return getuid () != geteuid () 2875 return getuid () != geteuid ()
2516 || getgid () != getegid (); 2876 || getgid () != getegid ();
2517#endif 2877#endif
2518} 2878}
2519 2879
2520unsigned int ecb_cold 2880ecb_cold
2881unsigned int
2521ev_supported_backends (void) EV_THROW 2882ev_supported_backends (void) EV_NOEXCEPT
2522{ 2883{
2523 unsigned int flags = 0; 2884 unsigned int flags = 0;
2524 2885
2525 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2886 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2526 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2887 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
2527 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2888 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2889 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
2890 if (EV_USE_IOURING ) flags |= EVBACKEND_IOURING;
2528 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2891 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
2529 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2892 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
2530 2893
2531 return flags; 2894 return flags;
2532} 2895}
2533 2896
2534unsigned int ecb_cold 2897ecb_cold
2898unsigned int
2535ev_recommended_backends (void) EV_THROW 2899ev_recommended_backends (void) EV_NOEXCEPT
2536{ 2900{
2537 unsigned int flags = ev_supported_backends (); 2901 unsigned int flags = ev_supported_backends ();
2538 2902
2539#ifndef __NetBSD__ 2903#ifndef __NetBSD__
2540 /* kqueue is borked on everything but netbsd apparently */ 2904 /* kqueue is borked on everything but netbsd apparently */
2548#endif 2912#endif
2549#ifdef __FreeBSD__ 2913#ifdef __FreeBSD__
2550 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ 2914 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2551#endif 2915#endif
2552 2916
2917 /* TODO: linuxaio is very experimental */
2918#if !EV_RECOMMEND_LINUXAIO
2919 flags &= ~EVBACKEND_LINUXAIO;
2920#endif
2921 /* TODO: linuxaio is super experimental */
2922#if !EV_RECOMMEND_IOURING
2923 flags &= ~EVBACKEND_IOURING;
2924#endif
2925
2553 return flags; 2926 return flags;
2554} 2927}
2555 2928
2556unsigned int ecb_cold 2929ecb_cold
2930unsigned int
2557ev_embeddable_backends (void) EV_THROW 2931ev_embeddable_backends (void) EV_NOEXCEPT
2558{ 2932{
2559 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2933 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2560 2934
2561 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2935 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2562 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 2936 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2563 flags &= ~EVBACKEND_EPOLL; 2937 flags &= ~EVBACKEND_EPOLL;
2564 2938
2939 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
2940
2941 /* EVBACKEND_IOURING is practically embeddable, but the current implementation is not
2942 * because our backend_fd is the epoll fd we need as fallback.
2943 * if the kernel ever is fixed, this might change...
2944 */
2945
2565 return flags; 2946 return flags;
2566} 2947}
2567 2948
2568unsigned int 2949unsigned int
2569ev_backend (EV_P) EV_THROW 2950ev_backend (EV_P) EV_NOEXCEPT
2570{ 2951{
2571 return backend; 2952 return backend;
2572} 2953}
2573 2954
2574#if EV_FEATURE_API 2955#if EV_FEATURE_API
2575unsigned int 2956unsigned int
2576ev_iteration (EV_P) EV_THROW 2957ev_iteration (EV_P) EV_NOEXCEPT
2577{ 2958{
2578 return loop_count; 2959 return loop_count;
2579} 2960}
2580 2961
2581unsigned int 2962unsigned int
2582ev_depth (EV_P) EV_THROW 2963ev_depth (EV_P) EV_NOEXCEPT
2583{ 2964{
2584 return loop_depth; 2965 return loop_depth;
2585} 2966}
2586 2967
2587void 2968void
2588ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW 2969ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2589{ 2970{
2590 io_blocktime = interval; 2971 io_blocktime = interval;
2591} 2972}
2592 2973
2593void 2974void
2594ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW 2975ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2595{ 2976{
2596 timeout_blocktime = interval; 2977 timeout_blocktime = interval;
2597} 2978}
2598 2979
2599void 2980void
2600ev_set_userdata (EV_P_ void *data) EV_THROW 2981ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2601{ 2982{
2602 userdata = data; 2983 userdata = data;
2603} 2984}
2604 2985
2605void * 2986void *
2606ev_userdata (EV_P) EV_THROW 2987ev_userdata (EV_P) EV_NOEXCEPT
2607{ 2988{
2608 return userdata; 2989 return userdata;
2609} 2990}
2610 2991
2611void 2992void
2612ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW 2993ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
2613{ 2994{
2614 invoke_cb = invoke_pending_cb; 2995 invoke_cb = invoke_pending_cb;
2615} 2996}
2616 2997
2617void 2998void
2618ev_set_loop_release_cb (EV_P_ ev_loop_callback_nothrow release, ev_loop_callback_nothrow acquire) EV_THROW 2999ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
2619{ 3000{
2620 release_cb = release; 3001 release_cb = release;
2621 acquire_cb = acquire; 3002 acquire_cb = acquire;
2622} 3003}
2623#endif 3004#endif
2624 3005
2625/* initialise a loop structure, must be zero-initialised */ 3006/* initialise a loop structure, must be zero-initialised */
2626static void noinline ecb_cold 3007ecb_noinline ecb_cold
3008static void
2627loop_init (EV_P_ unsigned int flags) EV_THROW 3009loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
2628{ 3010{
2629 if (!backend) 3011 if (!backend)
2630 { 3012 {
2631 origflags = flags; 3013 origflags = flags;
2632 3014
2690 3072
2691 if (!(flags & EVBACKEND_MASK)) 3073 if (!(flags & EVBACKEND_MASK))
2692 flags |= ev_recommended_backends (); 3074 flags |= ev_recommended_backends ();
2693 3075
2694#if EV_USE_IOCP 3076#if EV_USE_IOCP
2695 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 3077 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2696#endif 3078#endif
2697#if EV_USE_PORT 3079#if EV_USE_PORT
2698 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3080 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
2699#endif 3081#endif
2700#if EV_USE_KQUEUE 3082#if EV_USE_KQUEUE
2701 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 3083 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
3084#endif
3085#if EV_USE_IOURING
3086 if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
3087#endif
3088#if EV_USE_LINUXAIO
3089 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
2702#endif 3090#endif
2703#if EV_USE_EPOLL 3091#if EV_USE_EPOLL
2704 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3092 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
2705#endif 3093#endif
2706#if EV_USE_POLL 3094#if EV_USE_POLL
2707 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3095 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
2708#endif 3096#endif
2709#if EV_USE_SELECT 3097#if EV_USE_SELECT
2710 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3098 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
2711#endif 3099#endif
2712 3100
2713 ev_prepare_init (&pending_w, pendingcb); 3101 ev_prepare_init (&pending_w, pendingcb);
2714 3102
2715#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3103#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2718#endif 3106#endif
2719 } 3107 }
2720} 3108}
2721 3109
2722/* free up a loop structure */ 3110/* free up a loop structure */
2723void ecb_cold 3111ecb_cold
3112void
2724ev_loop_destroy (EV_P) 3113ev_loop_destroy (EV_P)
2725{ 3114{
2726 int i; 3115 int i;
2727 3116
2728#if EV_MULTIPLICITY 3117#if EV_MULTIPLICITY
2731 return; 3120 return;
2732#endif 3121#endif
2733 3122
2734#if EV_CLEANUP_ENABLE 3123#if EV_CLEANUP_ENABLE
2735 /* queue cleanup watchers (and execute them) */ 3124 /* queue cleanup watchers (and execute them) */
2736 if (expect_false (cleanupcnt)) 3125 if (ecb_expect_false (cleanupcnt))
2737 { 3126 {
2738 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); 3127 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2739 EV_INVOKE_PENDING; 3128 EV_INVOKE_PENDING;
2740 } 3129 }
2741#endif 3130#endif
2769 3158
2770 if (backend_fd >= 0) 3159 if (backend_fd >= 0)
2771 close (backend_fd); 3160 close (backend_fd);
2772 3161
2773#if EV_USE_IOCP 3162#if EV_USE_IOCP
2774 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3163 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2775#endif 3164#endif
2776#if EV_USE_PORT 3165#if EV_USE_PORT
2777 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3166 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
2778#endif 3167#endif
2779#if EV_USE_KQUEUE 3168#if EV_USE_KQUEUE
2780 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3169 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3170#endif
3171#if EV_USE_IOURING
3172 if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
3173#endif
3174#if EV_USE_LINUXAIO
3175 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
2781#endif 3176#endif
2782#if EV_USE_EPOLL 3177#if EV_USE_EPOLL
2783 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3178 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
2784#endif 3179#endif
2785#if EV_USE_POLL 3180#if EV_USE_POLL
2786 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3181 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
2787#endif 3182#endif
2788#if EV_USE_SELECT 3183#if EV_USE_SELECT
2789 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3184 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
2790#endif 3185#endif
2791 3186
2792 for (i = NUMPRI; i--; ) 3187 for (i = NUMPRI; i--; )
2793 { 3188 {
2794 array_free (pending, [i]); 3189 array_free (pending, [i]);
2836 3231
2837inline_size void 3232inline_size void
2838loop_fork (EV_P) 3233loop_fork (EV_P)
2839{ 3234{
2840#if EV_USE_PORT 3235#if EV_USE_PORT
2841 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3236 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
2842#endif 3237#endif
2843#if EV_USE_KQUEUE 3238#if EV_USE_KQUEUE
2844 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3239 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3240#endif
3241#if EV_USE_IOURING
3242 if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
3243#endif
3244#if EV_USE_LINUXAIO
3245 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
2845#endif 3246#endif
2846#if EV_USE_EPOLL 3247#if EV_USE_EPOLL
2847 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3248 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
2848#endif 3249#endif
2849#if EV_USE_INOTIFY 3250#if EV_USE_INOTIFY
2850 infy_fork (EV_A); 3251 infy_fork (EV_A);
2851#endif 3252#endif
2852 3253
2853#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3254#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2854 if (ev_is_active (&pipe_w)) 3255 if (ev_is_active (&pipe_w) && postfork != 2)
2855 { 3256 {
2856 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 3257 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2857 3258
2858 ev_ref (EV_A); 3259 ev_ref (EV_A);
2859 ev_io_stop (EV_A_ &pipe_w); 3260 ev_io_stop (EV_A_ &pipe_w);
2870 postfork = 0; 3271 postfork = 0;
2871} 3272}
2872 3273
2873#if EV_MULTIPLICITY 3274#if EV_MULTIPLICITY
2874 3275
3276ecb_cold
2875struct ev_loop * ecb_cold 3277struct ev_loop *
2876ev_loop_new (unsigned int flags) EV_THROW 3278ev_loop_new (unsigned int flags) EV_NOEXCEPT
2877{ 3279{
2878 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3280 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2879 3281
2880 memset (EV_A, 0, sizeof (struct ev_loop)); 3282 memset (EV_A, 0, sizeof (struct ev_loop));
2881 loop_init (EV_A_ flags); 3283 loop_init (EV_A_ flags);
2888} 3290}
2889 3291
2890#endif /* multiplicity */ 3292#endif /* multiplicity */
2891 3293
2892#if EV_VERIFY 3294#if EV_VERIFY
2893static void noinline ecb_cold 3295ecb_noinline ecb_cold
3296static void
2894verify_watcher (EV_P_ W w) 3297verify_watcher (EV_P_ W w)
2895{ 3298{
2896 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3299 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2897 3300
2898 if (w->pending) 3301 if (w->pending)
2899 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3302 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2900} 3303}
2901 3304
2902static void noinline ecb_cold 3305ecb_noinline ecb_cold
3306static void
2903verify_heap (EV_P_ ANHE *heap, int N) 3307verify_heap (EV_P_ ANHE *heap, int N)
2904{ 3308{
2905 int i; 3309 int i;
2906 3310
2907 for (i = HEAP0; i < N + HEAP0; ++i) 3311 for (i = HEAP0; i < N + HEAP0; ++i)
2912 3316
2913 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3317 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2914 } 3318 }
2915} 3319}
2916 3320
2917static void noinline ecb_cold 3321ecb_noinline ecb_cold
3322static void
2918array_verify (EV_P_ W *ws, int cnt) 3323array_verify (EV_P_ W *ws, int cnt)
2919{ 3324{
2920 while (cnt--) 3325 while (cnt--)
2921 { 3326 {
2922 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3327 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
2925} 3330}
2926#endif 3331#endif
2927 3332
2928#if EV_FEATURE_API 3333#if EV_FEATURE_API
2929void ecb_cold 3334void ecb_cold
2930ev_verify (EV_P) EV_THROW 3335ev_verify (EV_P) EV_NOEXCEPT
2931{ 3336{
2932#if EV_VERIFY 3337#if EV_VERIFY
2933 int i; 3338 int i;
2934 WL w, w2; 3339 WL w, w2;
2935 3340
3011#endif 3416#endif
3012} 3417}
3013#endif 3418#endif
3014 3419
3015#if EV_MULTIPLICITY 3420#if EV_MULTIPLICITY
3421ecb_cold
3016struct ev_loop * ecb_cold 3422struct ev_loop *
3017#else 3423#else
3018int 3424int
3019#endif 3425#endif
3020ev_default_loop (unsigned int flags) EV_THROW 3426ev_default_loop (unsigned int flags) EV_NOEXCEPT
3021{ 3427{
3022 if (!ev_default_loop_ptr) 3428 if (!ev_default_loop_ptr)
3023 { 3429 {
3024#if EV_MULTIPLICITY 3430#if EV_MULTIPLICITY
3025 EV_P = ev_default_loop_ptr = &default_loop_struct; 3431 EV_P = ev_default_loop_ptr = &default_loop_struct;
3044 3450
3045 return ev_default_loop_ptr; 3451 return ev_default_loop_ptr;
3046} 3452}
3047 3453
3048void 3454void
3049ev_loop_fork (EV_P) EV_THROW 3455ev_loop_fork (EV_P) EV_NOEXCEPT
3050{ 3456{
3051 postfork = 1; 3457 postfork = 1;
3052} 3458}
3053 3459
3054/*****************************************************************************/ 3460/*****************************************************************************/
3058{ 3464{
3059 EV_CB_INVOKE ((W)w, revents); 3465 EV_CB_INVOKE ((W)w, revents);
3060} 3466}
3061 3467
3062unsigned int 3468unsigned int
3063ev_pending_count (EV_P) EV_THROW 3469ev_pending_count (EV_P) EV_NOEXCEPT
3064{ 3470{
3065 int pri; 3471 int pri;
3066 unsigned int count = 0; 3472 unsigned int count = 0;
3067 3473
3068 for (pri = NUMPRI; pri--; ) 3474 for (pri = NUMPRI; pri--; )
3069 count += pendingcnt [pri]; 3475 count += pendingcnt [pri];
3070 3476
3071 return count; 3477 return count;
3072} 3478}
3073 3479
3074void noinline 3480ecb_noinline
3481void
3075ev_invoke_pending (EV_P) 3482ev_invoke_pending (EV_P)
3076{ 3483{
3077 pendingpri = NUMPRI; 3484 pendingpri = NUMPRI;
3078 3485
3079 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */ 3486 do
3080 { 3487 {
3081 --pendingpri; 3488 --pendingpri;
3082 3489
3490 /* pendingpri possibly gets modified in the inner loop */
3083 while (pendingcnt [pendingpri]) 3491 while (pendingcnt [pendingpri])
3084 { 3492 {
3085 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri]; 3493 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
3086 3494
3087 p->w->pending = 0; 3495 p->w->pending = 0;
3088 EV_CB_INVOKE (p->w, p->events); 3496 EV_CB_INVOKE (p->w, p->events);
3089 EV_FREQUENT_CHECK; 3497 EV_FREQUENT_CHECK;
3090 } 3498 }
3091 } 3499 }
3500 while (pendingpri);
3092} 3501}
3093 3502
3094#if EV_IDLE_ENABLE 3503#if EV_IDLE_ENABLE
3095/* make idle watchers pending. this handles the "call-idle */ 3504/* make idle watchers pending. this handles the "call-idle */
3096/* only when higher priorities are idle" logic */ 3505/* only when higher priorities are idle" logic */
3097inline_size void 3506inline_size void
3098idle_reify (EV_P) 3507idle_reify (EV_P)
3099{ 3508{
3100 if (expect_false (idleall)) 3509 if (ecb_expect_false (idleall))
3101 { 3510 {
3102 int pri; 3511 int pri;
3103 3512
3104 for (pri = NUMPRI; pri--; ) 3513 for (pri = NUMPRI; pri--; )
3105 { 3514 {
3154 } 3563 }
3155} 3564}
3156 3565
3157#if EV_PERIODIC_ENABLE 3566#if EV_PERIODIC_ENABLE
3158 3567
3159static void noinline 3568ecb_noinline
3569static void
3160periodic_recalc (EV_P_ ev_periodic *w) 3570periodic_recalc (EV_P_ ev_periodic *w)
3161{ 3571{
3162 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3572 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3163 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); 3573 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3164 3574
3166 while (at <= ev_rt_now) 3576 while (at <= ev_rt_now)
3167 { 3577 {
3168 ev_tstamp nat = at + w->interval; 3578 ev_tstamp nat = at + w->interval;
3169 3579
3170 /* when resolution fails us, we use ev_rt_now */ 3580 /* when resolution fails us, we use ev_rt_now */
3171 if (expect_false (nat == at)) 3581 if (ecb_expect_false (nat == at))
3172 { 3582 {
3173 at = ev_rt_now; 3583 at = ev_rt_now;
3174 break; 3584 break;
3175 } 3585 }
3176 3586
3222 } 3632 }
3223} 3633}
3224 3634
3225/* simply recalculate all periodics */ 3635/* simply recalculate all periodics */
3226/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3636/* TODO: maybe ensure that at least one event happens when jumping forward? */
3227static void noinline ecb_cold 3637ecb_noinline ecb_cold
3638static void
3228periodics_reschedule (EV_P) 3639periodics_reschedule (EV_P)
3229{ 3640{
3230 int i; 3641 int i;
3231 3642
3232 /* adjust periodics after time jump */ 3643 /* adjust periodics after time jump */
3245 reheap (periodics, periodiccnt); 3656 reheap (periodics, periodiccnt);
3246} 3657}
3247#endif 3658#endif
3248 3659
3249/* adjust all timers by a given offset */ 3660/* adjust all timers by a given offset */
3250static void noinline ecb_cold 3661ecb_noinline ecb_cold
3662static void
3251timers_reschedule (EV_P_ ev_tstamp adjust) 3663timers_reschedule (EV_P_ ev_tstamp adjust)
3252{ 3664{
3253 int i; 3665 int i;
3254 3666
3255 for (i = 0; i < timercnt; ++i) 3667 for (i = 0; i < timercnt; ++i)
3264/* also detect if there was a timejump, and act accordingly */ 3676/* also detect if there was a timejump, and act accordingly */
3265inline_speed void 3677inline_speed void
3266time_update (EV_P_ ev_tstamp max_block) 3678time_update (EV_P_ ev_tstamp max_block)
3267{ 3679{
3268#if EV_USE_MONOTONIC 3680#if EV_USE_MONOTONIC
3269 if (expect_true (have_monotonic)) 3681 if (ecb_expect_true (have_monotonic))
3270 { 3682 {
3271 int i; 3683 int i;
3272 ev_tstamp odiff = rtmn_diff; 3684 ev_tstamp odiff = rtmn_diff;
3273 3685
3274 mn_now = get_clock (); 3686 mn_now = get_clock ();
3275 3687
3276 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3688 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
3277 /* interpolate in the meantime */ 3689 /* interpolate in the meantime */
3278 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3690 if (ecb_expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
3279 { 3691 {
3280 ev_rt_now = rtmn_diff + mn_now; 3692 ev_rt_now = rtmn_diff + mn_now;
3281 return; 3693 return;
3282 } 3694 }
3283 3695
3297 ev_tstamp diff; 3709 ev_tstamp diff;
3298 rtmn_diff = ev_rt_now - mn_now; 3710 rtmn_diff = ev_rt_now - mn_now;
3299 3711
3300 diff = odiff - rtmn_diff; 3712 diff = odiff - rtmn_diff;
3301 3713
3302 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP)) 3714 if (ecb_expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
3303 return; /* all is well */ 3715 return; /* all is well */
3304 3716
3305 ev_rt_now = ev_time (); 3717 ev_rt_now = ev_time ();
3306 mn_now = get_clock (); 3718 mn_now = get_clock ();
3307 now_floor = mn_now; 3719 now_floor = mn_now;
3316 else 3728 else
3317#endif 3729#endif
3318 { 3730 {
3319 ev_rt_now = ev_time (); 3731 ev_rt_now = ev_time ();
3320 3732
3321 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 3733 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
3322 { 3734 {
3323 /* adjust timers. this is easy, as the offset is the same for all of them */ 3735 /* adjust timers. this is easy, as the offset is the same for all of them */
3324 timers_reschedule (EV_A_ ev_rt_now - mn_now); 3736 timers_reschedule (EV_A_ ev_rt_now - mn_now);
3325#if EV_PERIODIC_ENABLE 3737#if EV_PERIODIC_ENABLE
3326 periodics_reschedule (EV_A); 3738 periodics_reschedule (EV_A);
3349#if EV_VERIFY >= 2 3761#if EV_VERIFY >= 2
3350 ev_verify (EV_A); 3762 ev_verify (EV_A);
3351#endif 3763#endif
3352 3764
3353#ifndef _WIN32 3765#ifndef _WIN32
3354 if (expect_false (curpid)) /* penalise the forking check even more */ 3766 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
3355 if (expect_false (getpid () != curpid)) 3767 if (ecb_expect_false (getpid () != curpid))
3356 { 3768 {
3357 curpid = getpid (); 3769 curpid = getpid ();
3358 postfork = 1; 3770 postfork = 1;
3359 } 3771 }
3360#endif 3772#endif
3361 3773
3362#if EV_FORK_ENABLE 3774#if EV_FORK_ENABLE
3363 /* we might have forked, so queue fork handlers */ 3775 /* we might have forked, so queue fork handlers */
3364 if (expect_false (postfork)) 3776 if (ecb_expect_false (postfork))
3365 if (forkcnt) 3777 if (forkcnt)
3366 { 3778 {
3367 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3779 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
3368 EV_INVOKE_PENDING; 3780 EV_INVOKE_PENDING;
3369 } 3781 }
3370#endif 3782#endif
3371 3783
3372#if EV_PREPARE_ENABLE 3784#if EV_PREPARE_ENABLE
3373 /* queue prepare watchers (and execute them) */ 3785 /* queue prepare watchers (and execute them) */
3374 if (expect_false (preparecnt)) 3786 if (ecb_expect_false (preparecnt))
3375 { 3787 {
3376 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3788 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
3377 EV_INVOKE_PENDING; 3789 EV_INVOKE_PENDING;
3378 } 3790 }
3379#endif 3791#endif
3380 3792
3381 if (expect_false (loop_done)) 3793 if (ecb_expect_false (loop_done))
3382 break; 3794 break;
3383 3795
3384 /* we might have forked, so reify kernel state if necessary */ 3796 /* we might have forked, so reify kernel state if necessary */
3385 if (expect_false (postfork)) 3797 if (ecb_expect_false (postfork))
3386 loop_fork (EV_A); 3798 loop_fork (EV_A);
3387 3799
3388 /* update fd-related kernel structures */ 3800 /* update fd-related kernel structures */
3389 fd_reify (EV_A); 3801 fd_reify (EV_A);
3390 3802
3402 /* from now on, we want a pipe-wake-up */ 3814 /* from now on, we want a pipe-wake-up */
3403 pipe_write_wanted = 1; 3815 pipe_write_wanted = 1;
3404 3816
3405 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */ 3817 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3406 3818
3407 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) 3819 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
3408 { 3820 {
3409 waittime = MAX_BLOCKTIME; 3821 waittime = MAX_BLOCKTIME;
3410 3822
3411 if (timercnt) 3823 if (timercnt)
3412 { 3824 {
3421 if (waittime > to) waittime = to; 3833 if (waittime > to) waittime = to;
3422 } 3834 }
3423#endif 3835#endif
3424 3836
3425 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3837 /* don't let timeouts decrease the waittime below timeout_blocktime */
3426 if (expect_false (waittime < timeout_blocktime)) 3838 if (ecb_expect_false (waittime < timeout_blocktime))
3427 waittime = timeout_blocktime; 3839 waittime = timeout_blocktime;
3428 3840
3429 /* at this point, we NEED to wait, so we have to ensure */ 3841 /* at this point, we NEED to wait, so we have to ensure */
3430 /* to pass a minimum nonzero value to the backend */ 3842 /* to pass a minimum nonzero value to the backend */
3431 if (expect_false (waittime < backend_mintime)) 3843 if (ecb_expect_false (waittime < backend_mintime))
3432 waittime = backend_mintime; 3844 waittime = backend_mintime;
3433 3845
3434 /* extra check because io_blocktime is commonly 0 */ 3846 /* extra check because io_blocktime is commonly 0 */
3435 if (expect_false (io_blocktime)) 3847 if (ecb_expect_false (io_blocktime))
3436 { 3848 {
3437 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3849 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3438 3850
3439 if (sleeptime > waittime - backend_mintime) 3851 if (sleeptime > waittime - backend_mintime)
3440 sleeptime = waittime - backend_mintime; 3852 sleeptime = waittime - backend_mintime;
3441 3853
3442 if (expect_true (sleeptime > 0.)) 3854 if (ecb_expect_true (sleeptime > 0.))
3443 { 3855 {
3444 ev_sleep (sleeptime); 3856 ev_sleep (sleeptime);
3445 waittime -= sleeptime; 3857 waittime -= sleeptime;
3446 } 3858 }
3447 } 3859 }
3461 { 3873 {
3462 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 3874 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3463 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3875 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3464 } 3876 }
3465 3877
3466
3467 /* update ev_rt_now, do magic */ 3878 /* update ev_rt_now, do magic */
3468 time_update (EV_A_ waittime + sleeptime); 3879 time_update (EV_A_ waittime + sleeptime);
3469 } 3880 }
3470 3881
3471 /* queue pending timers and reschedule them */ 3882 /* queue pending timers and reschedule them */
3479 idle_reify (EV_A); 3890 idle_reify (EV_A);
3480#endif 3891#endif
3481 3892
3482#if EV_CHECK_ENABLE 3893#if EV_CHECK_ENABLE
3483 /* queue check watchers, to be executed first */ 3894 /* queue check watchers, to be executed first */
3484 if (expect_false (checkcnt)) 3895 if (ecb_expect_false (checkcnt))
3485 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3896 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3486#endif 3897#endif
3487 3898
3488 EV_INVOKE_PENDING; 3899 EV_INVOKE_PENDING;
3489 } 3900 }
3490 while (expect_true ( 3901 while (ecb_expect_true (
3491 activecnt 3902 activecnt
3492 && !loop_done 3903 && !loop_done
3493 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) 3904 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
3494 )); 3905 ));
3495 3906
3502 3913
3503 return activecnt; 3914 return activecnt;
3504} 3915}
3505 3916
3506void 3917void
3507ev_break (EV_P_ int how) EV_THROW 3918ev_break (EV_P_ int how) EV_NOEXCEPT
3508{ 3919{
3509 loop_done = how; 3920 loop_done = how;
3510} 3921}
3511 3922
3512void 3923void
3513ev_ref (EV_P) EV_THROW 3924ev_ref (EV_P) EV_NOEXCEPT
3514{ 3925{
3515 ++activecnt; 3926 ++activecnt;
3516} 3927}
3517 3928
3518void 3929void
3519ev_unref (EV_P) EV_THROW 3930ev_unref (EV_P) EV_NOEXCEPT
3520{ 3931{
3521 --activecnt; 3932 --activecnt;
3522} 3933}
3523 3934
3524void 3935void
3525ev_now_update (EV_P) EV_THROW 3936ev_now_update (EV_P) EV_NOEXCEPT
3526{ 3937{
3527 time_update (EV_A_ 1e100); 3938 time_update (EV_A_ 1e100);
3528} 3939}
3529 3940
3530void 3941void
3531ev_suspend (EV_P) EV_THROW 3942ev_suspend (EV_P) EV_NOEXCEPT
3532{ 3943{
3533 ev_now_update (EV_A); 3944 ev_now_update (EV_A);
3534} 3945}
3535 3946
3536void 3947void
3537ev_resume (EV_P) EV_THROW 3948ev_resume (EV_P) EV_NOEXCEPT
3538{ 3949{
3539 ev_tstamp mn_prev = mn_now; 3950 ev_tstamp mn_prev = mn_now;
3540 3951
3541 ev_now_update (EV_A); 3952 ev_now_update (EV_A);
3542 timers_reschedule (EV_A_ mn_now - mn_prev); 3953 timers_reschedule (EV_A_ mn_now - mn_prev);
3559inline_size void 3970inline_size void
3560wlist_del (WL *head, WL elem) 3971wlist_del (WL *head, WL elem)
3561{ 3972{
3562 while (*head) 3973 while (*head)
3563 { 3974 {
3564 if (expect_true (*head == elem)) 3975 if (ecb_expect_true (*head == elem))
3565 { 3976 {
3566 *head = elem->next; 3977 *head = elem->next;
3567 break; 3978 break;
3568 } 3979 }
3569 3980
3581 w->pending = 0; 3992 w->pending = 0;
3582 } 3993 }
3583} 3994}
3584 3995
3585int 3996int
3586ev_clear_pending (EV_P_ void *w) EV_THROW 3997ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
3587{ 3998{
3588 W w_ = (W)w; 3999 W w_ = (W)w;
3589 int pending = w_->pending; 4000 int pending = w_->pending;
3590 4001
3591 if (expect_true (pending)) 4002 if (ecb_expect_true (pending))
3592 { 4003 {
3593 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4004 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3594 p->w = (W)&pending_w; 4005 p->w = (W)&pending_w;
3595 w_->pending = 0; 4006 w_->pending = 0;
3596 return p->events; 4007 return p->events;
3623 w->active = 0; 4034 w->active = 0;
3624} 4035}
3625 4036
3626/*****************************************************************************/ 4037/*****************************************************************************/
3627 4038
3628void noinline 4039ecb_noinline
4040void
3629ev_io_start (EV_P_ ev_io *w) EV_THROW 4041ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
3630{ 4042{
3631 int fd = w->fd; 4043 int fd = w->fd;
3632 4044
3633 if (expect_false (ev_is_active (w))) 4045 if (ecb_expect_false (ev_is_active (w)))
3634 return; 4046 return;
3635 4047
3636 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4048 assert (("libev: ev_io_start called with negative fd", fd >= 0));
3637 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 4049 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
3638 4050
4051#if EV_VERIFY >= 2
4052 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4053#endif
3639 EV_FREQUENT_CHECK; 4054 EV_FREQUENT_CHECK;
3640 4055
3641 ev_start (EV_A_ (W)w, 1); 4056 ev_start (EV_A_ (W)w, 1);
3642 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4057 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
3643 wlist_add (&anfds[fd].head, (WL)w); 4058 wlist_add (&anfds[fd].head, (WL)w);
3644 4059
3645 /* common bug, apparently */ 4060 /* common bug, apparently */
3646 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w)); 4061 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3647 4062
3649 w->events &= ~EV__IOFDSET; 4064 w->events &= ~EV__IOFDSET;
3650 4065
3651 EV_FREQUENT_CHECK; 4066 EV_FREQUENT_CHECK;
3652} 4067}
3653 4068
3654void noinline 4069ecb_noinline
4070void
3655ev_io_stop (EV_P_ ev_io *w) EV_THROW 4071ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
3656{ 4072{
3657 clear_pending (EV_A_ (W)w); 4073 clear_pending (EV_A_ (W)w);
3658 if (expect_false (!ev_is_active (w))) 4074 if (ecb_expect_false (!ev_is_active (w)))
3659 return; 4075 return;
3660 4076
3661 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4077 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
3662 4078
4079#if EV_VERIFY >= 2
4080 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4081#endif
3663 EV_FREQUENT_CHECK; 4082 EV_FREQUENT_CHECK;
3664 4083
3665 wlist_del (&anfds[w->fd].head, (WL)w); 4084 wlist_del (&anfds[w->fd].head, (WL)w);
3666 ev_stop (EV_A_ (W)w); 4085 ev_stop (EV_A_ (W)w);
3667 4086
3668 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 4087 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3669 4088
3670 EV_FREQUENT_CHECK; 4089 EV_FREQUENT_CHECK;
3671} 4090}
3672 4091
3673void noinline 4092ecb_noinline
4093void
3674ev_timer_start (EV_P_ ev_timer *w) EV_THROW 4094ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
3675{ 4095{
3676 if (expect_false (ev_is_active (w))) 4096 if (ecb_expect_false (ev_is_active (w)))
3677 return; 4097 return;
3678 4098
3679 ev_at (w) += mn_now; 4099 ev_at (w) += mn_now;
3680 4100
3681 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4101 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
3682 4102
3683 EV_FREQUENT_CHECK; 4103 EV_FREQUENT_CHECK;
3684 4104
3685 ++timercnt; 4105 ++timercnt;
3686 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4106 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
3687 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4107 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
3688 ANHE_w (timers [ev_active (w)]) = (WT)w; 4108 ANHE_w (timers [ev_active (w)]) = (WT)w;
3689 ANHE_at_cache (timers [ev_active (w)]); 4109 ANHE_at_cache (timers [ev_active (w)]);
3690 upheap (timers, ev_active (w)); 4110 upheap (timers, ev_active (w));
3691 4111
3692 EV_FREQUENT_CHECK; 4112 EV_FREQUENT_CHECK;
3693 4113
3694 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4114 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
3695} 4115}
3696 4116
3697void noinline 4117ecb_noinline
4118void
3698ev_timer_stop (EV_P_ ev_timer *w) EV_THROW 4119ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
3699{ 4120{
3700 clear_pending (EV_A_ (W)w); 4121 clear_pending (EV_A_ (W)w);
3701 if (expect_false (!ev_is_active (w))) 4122 if (ecb_expect_false (!ev_is_active (w)))
3702 return; 4123 return;
3703 4124
3704 EV_FREQUENT_CHECK; 4125 EV_FREQUENT_CHECK;
3705 4126
3706 { 4127 {
3708 4129
3709 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4130 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
3710 4131
3711 --timercnt; 4132 --timercnt;
3712 4133
3713 if (expect_true (active < timercnt + HEAP0)) 4134 if (ecb_expect_true (active < timercnt + HEAP0))
3714 { 4135 {
3715 timers [active] = timers [timercnt + HEAP0]; 4136 timers [active] = timers [timercnt + HEAP0];
3716 adjustheap (timers, timercnt, active); 4137 adjustheap (timers, timercnt, active);
3717 } 4138 }
3718 } 4139 }
3722 ev_stop (EV_A_ (W)w); 4143 ev_stop (EV_A_ (W)w);
3723 4144
3724 EV_FREQUENT_CHECK; 4145 EV_FREQUENT_CHECK;
3725} 4146}
3726 4147
3727void noinline 4148ecb_noinline
4149void
3728ev_timer_again (EV_P_ ev_timer *w) EV_THROW 4150ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
3729{ 4151{
3730 EV_FREQUENT_CHECK; 4152 EV_FREQUENT_CHECK;
3731 4153
3732 clear_pending (EV_A_ (W)w); 4154 clear_pending (EV_A_ (W)w);
3733 4155
3750 4172
3751 EV_FREQUENT_CHECK; 4173 EV_FREQUENT_CHECK;
3752} 4174}
3753 4175
3754ev_tstamp 4176ev_tstamp
3755ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW 4177ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
3756{ 4178{
3757 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4179 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3758} 4180}
3759 4181
3760#if EV_PERIODIC_ENABLE 4182#if EV_PERIODIC_ENABLE
3761void noinline 4183ecb_noinline
4184void
3762ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW 4185ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
3763{ 4186{
3764 if (expect_false (ev_is_active (w))) 4187 if (ecb_expect_false (ev_is_active (w)))
3765 return; 4188 return;
3766 4189
3767 if (w->reschedule_cb) 4190 if (w->reschedule_cb)
3768 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4191 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
3769 else if (w->interval) 4192 else if (w->interval)
3776 4199
3777 EV_FREQUENT_CHECK; 4200 EV_FREQUENT_CHECK;
3778 4201
3779 ++periodiccnt; 4202 ++periodiccnt;
3780 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4203 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
3781 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4204 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
3782 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4205 ANHE_w (periodics [ev_active (w)]) = (WT)w;
3783 ANHE_at_cache (periodics [ev_active (w)]); 4206 ANHE_at_cache (periodics [ev_active (w)]);
3784 upheap (periodics, ev_active (w)); 4207 upheap (periodics, ev_active (w));
3785 4208
3786 EV_FREQUENT_CHECK; 4209 EV_FREQUENT_CHECK;
3787 4210
3788 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4211 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
3789} 4212}
3790 4213
3791void noinline 4214ecb_noinline
4215void
3792ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW 4216ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
3793{ 4217{
3794 clear_pending (EV_A_ (W)w); 4218 clear_pending (EV_A_ (W)w);
3795 if (expect_false (!ev_is_active (w))) 4219 if (ecb_expect_false (!ev_is_active (w)))
3796 return; 4220 return;
3797 4221
3798 EV_FREQUENT_CHECK; 4222 EV_FREQUENT_CHECK;
3799 4223
3800 { 4224 {
3802 4226
3803 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4227 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
3804 4228
3805 --periodiccnt; 4229 --periodiccnt;
3806 4230
3807 if (expect_true (active < periodiccnt + HEAP0)) 4231 if (ecb_expect_true (active < periodiccnt + HEAP0))
3808 { 4232 {
3809 periodics [active] = periodics [periodiccnt + HEAP0]; 4233 periodics [active] = periodics [periodiccnt + HEAP0];
3810 adjustheap (periodics, periodiccnt, active); 4234 adjustheap (periodics, periodiccnt, active);
3811 } 4235 }
3812 } 4236 }
3814 ev_stop (EV_A_ (W)w); 4238 ev_stop (EV_A_ (W)w);
3815 4239
3816 EV_FREQUENT_CHECK; 4240 EV_FREQUENT_CHECK;
3817} 4241}
3818 4242
3819void noinline 4243ecb_noinline
4244void
3820ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW 4245ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
3821{ 4246{
3822 /* TODO: use adjustheap and recalculation */ 4247 /* TODO: use adjustheap and recalculation */
3823 ev_periodic_stop (EV_A_ w); 4248 ev_periodic_stop (EV_A_ w);
3824 ev_periodic_start (EV_A_ w); 4249 ev_periodic_start (EV_A_ w);
3825} 4250}
3829# define SA_RESTART 0 4254# define SA_RESTART 0
3830#endif 4255#endif
3831 4256
3832#if EV_SIGNAL_ENABLE 4257#if EV_SIGNAL_ENABLE
3833 4258
3834void noinline 4259ecb_noinline
4260void
3835ev_signal_start (EV_P_ ev_signal *w) EV_THROW 4261ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
3836{ 4262{
3837 if (expect_false (ev_is_active (w))) 4263 if (ecb_expect_false (ev_is_active (w)))
3838 return; 4264 return;
3839 4265
3840 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4266 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
3841 4267
3842#if EV_MULTIPLICITY 4268#if EV_MULTIPLICITY
3911 } 4337 }
3912 4338
3913 EV_FREQUENT_CHECK; 4339 EV_FREQUENT_CHECK;
3914} 4340}
3915 4341
3916void noinline 4342ecb_noinline
4343void
3917ev_signal_stop (EV_P_ ev_signal *w) EV_THROW 4344ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
3918{ 4345{
3919 clear_pending (EV_A_ (W)w); 4346 clear_pending (EV_A_ (W)w);
3920 if (expect_false (!ev_is_active (w))) 4347 if (ecb_expect_false (!ev_is_active (w)))
3921 return; 4348 return;
3922 4349
3923 EV_FREQUENT_CHECK; 4350 EV_FREQUENT_CHECK;
3924 4351
3925 wlist_del (&signals [w->signum - 1].head, (WL)w); 4352 wlist_del (&signals [w->signum - 1].head, (WL)w);
3953#endif 4380#endif
3954 4381
3955#if EV_CHILD_ENABLE 4382#if EV_CHILD_ENABLE
3956 4383
3957void 4384void
3958ev_child_start (EV_P_ ev_child *w) EV_THROW 4385ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
3959{ 4386{
3960#if EV_MULTIPLICITY 4387#if EV_MULTIPLICITY
3961 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4388 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3962#endif 4389#endif
3963 if (expect_false (ev_is_active (w))) 4390 if (ecb_expect_false (ev_is_active (w)))
3964 return; 4391 return;
3965 4392
3966 EV_FREQUENT_CHECK; 4393 EV_FREQUENT_CHECK;
3967 4394
3968 ev_start (EV_A_ (W)w, 1); 4395 ev_start (EV_A_ (W)w, 1);
3970 4397
3971 EV_FREQUENT_CHECK; 4398 EV_FREQUENT_CHECK;
3972} 4399}
3973 4400
3974void 4401void
3975ev_child_stop (EV_P_ ev_child *w) EV_THROW 4402ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
3976{ 4403{
3977 clear_pending (EV_A_ (W)w); 4404 clear_pending (EV_A_ (W)w);
3978 if (expect_false (!ev_is_active (w))) 4405 if (ecb_expect_false (!ev_is_active (w)))
3979 return; 4406 return;
3980 4407
3981 EV_FREQUENT_CHECK; 4408 EV_FREQUENT_CHECK;
3982 4409
3983 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); 4410 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
3997 4424
3998#define DEF_STAT_INTERVAL 5.0074891 4425#define DEF_STAT_INTERVAL 5.0074891
3999#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4426#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
4000#define MIN_STAT_INTERVAL 0.1074891 4427#define MIN_STAT_INTERVAL 0.1074891
4001 4428
4002static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4429ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
4003 4430
4004#if EV_USE_INOTIFY 4431#if EV_USE_INOTIFY
4005 4432
4006/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4433/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
4007# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4434# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
4008 4435
4009static void noinline 4436ecb_noinline
4437static void
4010infy_add (EV_P_ ev_stat *w) 4438infy_add (EV_P_ ev_stat *w)
4011{ 4439{
4012 w->wd = inotify_add_watch (fs_fd, w->path, 4440 w->wd = inotify_add_watch (fs_fd, w->path,
4013 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY 4441 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4014 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO 4442 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4078 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4506 if (ev_is_active (&w->timer)) ev_ref (EV_A);
4079 ev_timer_again (EV_A_ &w->timer); 4507 ev_timer_again (EV_A_ &w->timer);
4080 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4508 if (ev_is_active (&w->timer)) ev_unref (EV_A);
4081} 4509}
4082 4510
4083static void noinline 4511ecb_noinline
4512static void
4084infy_del (EV_P_ ev_stat *w) 4513infy_del (EV_P_ ev_stat *w)
4085{ 4514{
4086 int slot; 4515 int slot;
4087 int wd = w->wd; 4516 int wd = w->wd;
4088 4517
4095 4524
4096 /* remove this watcher, if others are watching it, they will rearm */ 4525 /* remove this watcher, if others are watching it, they will rearm */
4097 inotify_rm_watch (fs_fd, wd); 4526 inotify_rm_watch (fs_fd, wd);
4098} 4527}
4099 4528
4100static void noinline 4529ecb_noinline
4530static void
4101infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4531infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
4102{ 4532{
4103 if (slot < 0) 4533 if (slot < 0)
4104 /* overflow, need to check for all hash slots */ 4534 /* overflow, need to check for all hash slots */
4105 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4535 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
4141 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4571 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4142 ofs += sizeof (struct inotify_event) + ev->len; 4572 ofs += sizeof (struct inotify_event) + ev->len;
4143 } 4573 }
4144} 4574}
4145 4575
4146inline_size void ecb_cold 4576inline_size ecb_cold
4577void
4147ev_check_2625 (EV_P) 4578ev_check_2625 (EV_P)
4148{ 4579{
4149 /* kernels < 2.6.25 are borked 4580 /* kernels < 2.6.25 are borked
4150 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4581 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
4151 */ 4582 */
4241#else 4672#else
4242# define EV_LSTAT(p,b) lstat (p, b) 4673# define EV_LSTAT(p,b) lstat (p, b)
4243#endif 4674#endif
4244 4675
4245void 4676void
4246ev_stat_stat (EV_P_ ev_stat *w) EV_THROW 4677ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
4247{ 4678{
4248 if (lstat (w->path, &w->attr) < 0) 4679 if (lstat (w->path, &w->attr) < 0)
4249 w->attr.st_nlink = 0; 4680 w->attr.st_nlink = 0;
4250 else if (!w->attr.st_nlink) 4681 else if (!w->attr.st_nlink)
4251 w->attr.st_nlink = 1; 4682 w->attr.st_nlink = 1;
4252} 4683}
4253 4684
4254static void noinline 4685ecb_noinline
4686static void
4255stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4687stat_timer_cb (EV_P_ ev_timer *w_, int revents)
4256{ 4688{
4257 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4689 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
4258 4690
4259 ev_statdata prev = w->attr; 4691 ev_statdata prev = w->attr;
4290 ev_feed_event (EV_A_ w, EV_STAT); 4722 ev_feed_event (EV_A_ w, EV_STAT);
4291 } 4723 }
4292} 4724}
4293 4725
4294void 4726void
4295ev_stat_start (EV_P_ ev_stat *w) EV_THROW 4727ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
4296{ 4728{
4297 if (expect_false (ev_is_active (w))) 4729 if (ecb_expect_false (ev_is_active (w)))
4298 return; 4730 return;
4299 4731
4300 ev_stat_stat (EV_A_ w); 4732 ev_stat_stat (EV_A_ w);
4301 4733
4302 if (w->interval < MIN_STAT_INTERVAL && w->interval) 4734 if (w->interval < MIN_STAT_INTERVAL && w->interval)
4321 4753
4322 EV_FREQUENT_CHECK; 4754 EV_FREQUENT_CHECK;
4323} 4755}
4324 4756
4325void 4757void
4326ev_stat_stop (EV_P_ ev_stat *w) EV_THROW 4758ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
4327{ 4759{
4328 clear_pending (EV_A_ (W)w); 4760 clear_pending (EV_A_ (W)w);
4329 if (expect_false (!ev_is_active (w))) 4761 if (ecb_expect_false (!ev_is_active (w)))
4330 return; 4762 return;
4331 4763
4332 EV_FREQUENT_CHECK; 4764 EV_FREQUENT_CHECK;
4333 4765
4334#if EV_USE_INOTIFY 4766#if EV_USE_INOTIFY
4347} 4779}
4348#endif 4780#endif
4349 4781
4350#if EV_IDLE_ENABLE 4782#if EV_IDLE_ENABLE
4351void 4783void
4352ev_idle_start (EV_P_ ev_idle *w) EV_THROW 4784ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
4353{ 4785{
4354 if (expect_false (ev_is_active (w))) 4786 if (ecb_expect_false (ev_is_active (w)))
4355 return; 4787 return;
4356 4788
4357 pri_adjust (EV_A_ (W)w); 4789 pri_adjust (EV_A_ (W)w);
4358 4790
4359 EV_FREQUENT_CHECK; 4791 EV_FREQUENT_CHECK;
4362 int active = ++idlecnt [ABSPRI (w)]; 4794 int active = ++idlecnt [ABSPRI (w)];
4363 4795
4364 ++idleall; 4796 ++idleall;
4365 ev_start (EV_A_ (W)w, active); 4797 ev_start (EV_A_ (W)w, active);
4366 4798
4367 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4799 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
4368 idles [ABSPRI (w)][active - 1] = w; 4800 idles [ABSPRI (w)][active - 1] = w;
4369 } 4801 }
4370 4802
4371 EV_FREQUENT_CHECK; 4803 EV_FREQUENT_CHECK;
4372} 4804}
4373 4805
4374void 4806void
4375ev_idle_stop (EV_P_ ev_idle *w) EV_THROW 4807ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
4376{ 4808{
4377 clear_pending (EV_A_ (W)w); 4809 clear_pending (EV_A_ (W)w);
4378 if (expect_false (!ev_is_active (w))) 4810 if (ecb_expect_false (!ev_is_active (w)))
4379 return; 4811 return;
4380 4812
4381 EV_FREQUENT_CHECK; 4813 EV_FREQUENT_CHECK;
4382 4814
4383 { 4815 {
4394} 4826}
4395#endif 4827#endif
4396 4828
4397#if EV_PREPARE_ENABLE 4829#if EV_PREPARE_ENABLE
4398void 4830void
4399ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW 4831ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
4400{ 4832{
4401 if (expect_false (ev_is_active (w))) 4833 if (ecb_expect_false (ev_is_active (w)))
4402 return; 4834 return;
4403 4835
4404 EV_FREQUENT_CHECK; 4836 EV_FREQUENT_CHECK;
4405 4837
4406 ev_start (EV_A_ (W)w, ++preparecnt); 4838 ev_start (EV_A_ (W)w, ++preparecnt);
4407 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4839 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
4408 prepares [preparecnt - 1] = w; 4840 prepares [preparecnt - 1] = w;
4409 4841
4410 EV_FREQUENT_CHECK; 4842 EV_FREQUENT_CHECK;
4411} 4843}
4412 4844
4413void 4845void
4414ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW 4846ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
4415{ 4847{
4416 clear_pending (EV_A_ (W)w); 4848 clear_pending (EV_A_ (W)w);
4417 if (expect_false (!ev_is_active (w))) 4849 if (ecb_expect_false (!ev_is_active (w)))
4418 return; 4850 return;
4419 4851
4420 EV_FREQUENT_CHECK; 4852 EV_FREQUENT_CHECK;
4421 4853
4422 { 4854 {
4432} 4864}
4433#endif 4865#endif
4434 4866
4435#if EV_CHECK_ENABLE 4867#if EV_CHECK_ENABLE
4436void 4868void
4437ev_check_start (EV_P_ ev_check *w) EV_THROW 4869ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
4438{ 4870{
4439 if (expect_false (ev_is_active (w))) 4871 if (ecb_expect_false (ev_is_active (w)))
4440 return; 4872 return;
4441 4873
4442 EV_FREQUENT_CHECK; 4874 EV_FREQUENT_CHECK;
4443 4875
4444 ev_start (EV_A_ (W)w, ++checkcnt); 4876 ev_start (EV_A_ (W)w, ++checkcnt);
4445 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4877 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
4446 checks [checkcnt - 1] = w; 4878 checks [checkcnt - 1] = w;
4447 4879
4448 EV_FREQUENT_CHECK; 4880 EV_FREQUENT_CHECK;
4449} 4881}
4450 4882
4451void 4883void
4452ev_check_stop (EV_P_ ev_check *w) EV_THROW 4884ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
4453{ 4885{
4454 clear_pending (EV_A_ (W)w); 4886 clear_pending (EV_A_ (W)w);
4455 if (expect_false (!ev_is_active (w))) 4887 if (ecb_expect_false (!ev_is_active (w)))
4456 return; 4888 return;
4457 4889
4458 EV_FREQUENT_CHECK; 4890 EV_FREQUENT_CHECK;
4459 4891
4460 { 4892 {
4469 EV_FREQUENT_CHECK; 4901 EV_FREQUENT_CHECK;
4470} 4902}
4471#endif 4903#endif
4472 4904
4473#if EV_EMBED_ENABLE 4905#if EV_EMBED_ENABLE
4474void noinline 4906ecb_noinline
4907void
4475ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW 4908ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
4476{ 4909{
4477 ev_run (w->other, EVRUN_NOWAIT); 4910 ev_run (w->other, EVRUN_NOWAIT);
4478} 4911}
4479 4912
4480static void 4913static void
4528 ev_idle_stop (EV_A_ idle); 4961 ev_idle_stop (EV_A_ idle);
4529} 4962}
4530#endif 4963#endif
4531 4964
4532void 4965void
4533ev_embed_start (EV_P_ ev_embed *w) EV_THROW 4966ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
4534{ 4967{
4535 if (expect_false (ev_is_active (w))) 4968 if (ecb_expect_false (ev_is_active (w)))
4536 return; 4969 return;
4537 4970
4538 { 4971 {
4539 EV_P = w->other; 4972 EV_P = w->other;
4540 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4973 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
4559 4992
4560 EV_FREQUENT_CHECK; 4993 EV_FREQUENT_CHECK;
4561} 4994}
4562 4995
4563void 4996void
4564ev_embed_stop (EV_P_ ev_embed *w) EV_THROW 4997ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
4565{ 4998{
4566 clear_pending (EV_A_ (W)w); 4999 clear_pending (EV_A_ (W)w);
4567 if (expect_false (!ev_is_active (w))) 5000 if (ecb_expect_false (!ev_is_active (w)))
4568 return; 5001 return;
4569 5002
4570 EV_FREQUENT_CHECK; 5003 EV_FREQUENT_CHECK;
4571 5004
4572 ev_io_stop (EV_A_ &w->io); 5005 ev_io_stop (EV_A_ &w->io);
4579} 5012}
4580#endif 5013#endif
4581 5014
4582#if EV_FORK_ENABLE 5015#if EV_FORK_ENABLE
4583void 5016void
4584ev_fork_start (EV_P_ ev_fork *w) EV_THROW 5017ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
4585{ 5018{
4586 if (expect_false (ev_is_active (w))) 5019 if (ecb_expect_false (ev_is_active (w)))
4587 return; 5020 return;
4588 5021
4589 EV_FREQUENT_CHECK; 5022 EV_FREQUENT_CHECK;
4590 5023
4591 ev_start (EV_A_ (W)w, ++forkcnt); 5024 ev_start (EV_A_ (W)w, ++forkcnt);
4592 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5025 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
4593 forks [forkcnt - 1] = w; 5026 forks [forkcnt - 1] = w;
4594 5027
4595 EV_FREQUENT_CHECK; 5028 EV_FREQUENT_CHECK;
4596} 5029}
4597 5030
4598void 5031void
4599ev_fork_stop (EV_P_ ev_fork *w) EV_THROW 5032ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
4600{ 5033{
4601 clear_pending (EV_A_ (W)w); 5034 clear_pending (EV_A_ (W)w);
4602 if (expect_false (!ev_is_active (w))) 5035 if (ecb_expect_false (!ev_is_active (w)))
4603 return; 5036 return;
4604 5037
4605 EV_FREQUENT_CHECK; 5038 EV_FREQUENT_CHECK;
4606 5039
4607 { 5040 {
4617} 5050}
4618#endif 5051#endif
4619 5052
4620#if EV_CLEANUP_ENABLE 5053#if EV_CLEANUP_ENABLE
4621void 5054void
4622ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW 5055ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4623{ 5056{
4624 if (expect_false (ev_is_active (w))) 5057 if (ecb_expect_false (ev_is_active (w)))
4625 return; 5058 return;
4626 5059
4627 EV_FREQUENT_CHECK; 5060 EV_FREQUENT_CHECK;
4628 5061
4629 ev_start (EV_A_ (W)w, ++cleanupcnt); 5062 ev_start (EV_A_ (W)w, ++cleanupcnt);
4630 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 5063 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
4631 cleanups [cleanupcnt - 1] = w; 5064 cleanups [cleanupcnt - 1] = w;
4632 5065
4633 /* cleanup watchers should never keep a refcount on the loop */ 5066 /* cleanup watchers should never keep a refcount on the loop */
4634 ev_unref (EV_A); 5067 ev_unref (EV_A);
4635 EV_FREQUENT_CHECK; 5068 EV_FREQUENT_CHECK;
4636} 5069}
4637 5070
4638void 5071void
4639ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW 5072ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4640{ 5073{
4641 clear_pending (EV_A_ (W)w); 5074 clear_pending (EV_A_ (W)w);
4642 if (expect_false (!ev_is_active (w))) 5075 if (ecb_expect_false (!ev_is_active (w)))
4643 return; 5076 return;
4644 5077
4645 EV_FREQUENT_CHECK; 5078 EV_FREQUENT_CHECK;
4646 ev_ref (EV_A); 5079 ev_ref (EV_A);
4647 5080
4658} 5091}
4659#endif 5092#endif
4660 5093
4661#if EV_ASYNC_ENABLE 5094#if EV_ASYNC_ENABLE
4662void 5095void
4663ev_async_start (EV_P_ ev_async *w) EV_THROW 5096ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4664{ 5097{
4665 if (expect_false (ev_is_active (w))) 5098 if (ecb_expect_false (ev_is_active (w)))
4666 return; 5099 return;
4667 5100
4668 w->sent = 0; 5101 w->sent = 0;
4669 5102
4670 evpipe_init (EV_A); 5103 evpipe_init (EV_A);
4671 5104
4672 EV_FREQUENT_CHECK; 5105 EV_FREQUENT_CHECK;
4673 5106
4674 ev_start (EV_A_ (W)w, ++asynccnt); 5107 ev_start (EV_A_ (W)w, ++asynccnt);
4675 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5108 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
4676 asyncs [asynccnt - 1] = w; 5109 asyncs [asynccnt - 1] = w;
4677 5110
4678 EV_FREQUENT_CHECK; 5111 EV_FREQUENT_CHECK;
4679} 5112}
4680 5113
4681void 5114void
4682ev_async_stop (EV_P_ ev_async *w) EV_THROW 5115ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4683{ 5116{
4684 clear_pending (EV_A_ (W)w); 5117 clear_pending (EV_A_ (W)w);
4685 if (expect_false (!ev_is_active (w))) 5118 if (ecb_expect_false (!ev_is_active (w)))
4686 return; 5119 return;
4687 5120
4688 EV_FREQUENT_CHECK; 5121 EV_FREQUENT_CHECK;
4689 5122
4690 { 5123 {
4698 5131
4699 EV_FREQUENT_CHECK; 5132 EV_FREQUENT_CHECK;
4700} 5133}
4701 5134
4702void 5135void
4703ev_async_send (EV_P_ ev_async *w) EV_THROW 5136ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
4704{ 5137{
4705 w->sent = 1; 5138 w->sent = 1;
4706 evpipe_write (EV_A_ &async_pending); 5139 evpipe_write (EV_A_ &async_pending);
4707} 5140}
4708#endif 5141#endif
4745 5178
4746 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5179 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
4747} 5180}
4748 5181
4749void 5182void
4750ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW 5183ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
4751{ 5184{
4752 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5185 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
4753
4754 if (expect_false (!once))
4755 {
4756 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
4757 return;
4758 }
4759 5186
4760 once->cb = cb; 5187 once->cb = cb;
4761 once->arg = arg; 5188 once->arg = arg;
4762 5189
4763 ev_init (&once->io, once_cb_io); 5190 ev_init (&once->io, once_cb_io);
4776} 5203}
4777 5204
4778/*****************************************************************************/ 5205/*****************************************************************************/
4779 5206
4780#if EV_WALK_ENABLE 5207#if EV_WALK_ENABLE
4781void ecb_cold 5208ecb_cold
5209void
4782ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW 5210ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
4783{ 5211{
4784 int i, j; 5212 int i, j;
4785 ev_watcher_list *wl, *wn; 5213 ev_watcher_list *wl, *wn;
4786 5214
4787 if (types & (EV_IO | EV_EMBED)) 5215 if (types & (EV_IO | EV_EMBED))

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