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Comparing libev/ev.c (file contents):
Revision 1.475 by sf-exg, Wed Apr 1 06:57:41 2015 UTC vs.
Revision 1.520 by root, Sat Dec 28 07:44:15 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 0 /* was: EV_FEATURE_BACKENDS, always off by default */
123# endif
124# else
125# undef EV_USE_LINUXAIO
126# define EV_USE_LINUXAIO 0
127# endif
128
129# if HAVE_LINUX_FS_H && HAVE_SYS_TIMERFD_H && HAVE_KERNEL_RWF_T
130# ifndef EV_USE_IOURING
131# define EV_USE_IOURING EV_FEATURE_BACKENDS
132# endif
133# else
134# undef EV_USE_IOURING
135# define EV_USE_IOURING 0
136# endif
137
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H 138# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
121# ifndef EV_USE_KQUEUE 139# ifndef EV_USE_KQUEUE
122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS 140# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
123# endif 141# endif
124# else 142# else
… …
159# endif 177# endif
160# else 178# else
161# undef EV_USE_EVENTFD 179# undef EV_USE_EVENTFD
162# define EV_USE_EVENTFD 0 180# define EV_USE_EVENTFD 0
163# endif 181# endif
164 182
183# if HAVE_SYS_TIMERFD_H
184# ifndef EV_USE_TIMERFD
185# define EV_USE_TIMERFD EV_FEATURE_OS
186# endif
187# else
188# undef EV_USE_TIMERFD
189# define EV_USE_TIMERFD 0
165#endif 190# endif
191
192#endif
193
194/* OS X, in its infinite idiocy, actually HARDCODES
195 * a limit of 1024 into their select. Where people have brains,
196 * OS X engineers apparently have a vacuum. Or maybe they were
197 * ordered to have a vacuum, or they do anything for money.
198 * This might help. Or not.
199 * Note that this must be defined early, as other include files
200 * will rely on this define as well.
201 */
202#define _DARWIN_UNLIMITED_SELECT 1
166 203
167#include <stdlib.h> 204#include <stdlib.h>
168#include <string.h> 205#include <string.h>
169#include <fcntl.h> 206#include <fcntl.h>
170#include <stddef.h> 207#include <stddef.h>
… …
208# ifndef EV_SELECT_IS_WINSOCKET 245# ifndef EV_SELECT_IS_WINSOCKET
209# define EV_SELECT_IS_WINSOCKET 1 246# define EV_SELECT_IS_WINSOCKET 1
210# endif 247# endif
211# undef EV_AVOID_STDIO 248# undef EV_AVOID_STDIO
212#endif 249#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
221 250
222/* this block tries to deduce configuration from header-defined symbols and defaults */ 251/* this block tries to deduce configuration from header-defined symbols and defaults */
223 252
224/* try to deduce the maximum number of signals on this platform */ 253/* try to deduce the maximum number of signals on this platform */
225#if defined EV_NSIG 254#if defined EV_NSIG
… …
313 342
314#ifndef EV_USE_PORT 343#ifndef EV_USE_PORT
315# define EV_USE_PORT 0 344# define EV_USE_PORT 0
316#endif 345#endif
317 346
347#ifndef EV_USE_LINUXAIO
348# if __linux /* libev currently assumes linux/aio_abi.h is always available on linux */
349# define EV_USE_LINUXAIO 0 /* was: 1, always off by default */
350# else
351# define EV_USE_LINUXAIO 0
352# endif
353#endif
354
355#ifndef EV_USE_IOURING
356# if __linux /* later checks might disable again */
357# define EV_USE_IOURING 1
358# else
359# define EV_USE_IOURING 0
360# endif
361#endif
362
318#ifndef EV_USE_INOTIFY 363#ifndef EV_USE_INOTIFY
319# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 364# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
320# define EV_USE_INOTIFY EV_FEATURE_OS 365# define EV_USE_INOTIFY EV_FEATURE_OS
321# else 366# else
322# define EV_USE_INOTIFY 0 367# define EV_USE_INOTIFY 0
… …
345# else 390# else
346# define EV_USE_SIGNALFD 0 391# define EV_USE_SIGNALFD 0
347# endif 392# endif
348#endif 393#endif
349 394
395#ifndef EV_USE_TIMERFD
396# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 8))
397# define EV_USE_TIMERFD EV_FEATURE_OS
398# else
399# define EV_USE_TIMERFD 0
400# endif
401#endif
402
350#if 0 /* debugging */ 403#if 0 /* debugging */
351# define EV_VERIFY 3 404# define EV_VERIFY 3
352# define EV_USE_4HEAP 1 405# define EV_USE_4HEAP 1
353# define EV_HEAP_CACHE_AT 1 406# define EV_HEAP_CACHE_AT 1
354#endif 407#endif
… …
363 416
364#ifndef EV_HEAP_CACHE_AT 417#ifndef EV_HEAP_CACHE_AT
365# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 418# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
366#endif 419#endif
367 420
368#ifdef ANDROID 421#ifdef __ANDROID__
369/* supposedly, android doesn't typedef fd_mask */ 422/* supposedly, android doesn't typedef fd_mask */
370# undef EV_USE_SELECT 423# undef EV_USE_SELECT
371# define EV_USE_SELECT 0 424# define EV_USE_SELECT 0
372/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */ 425/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
373# undef EV_USE_CLOCK_SYSCALL 426# undef EV_USE_CLOCK_SYSCALL
… …
387# include <sys/syscall.h> 440# include <sys/syscall.h>
388# ifdef SYS_clock_gettime 441# ifdef SYS_clock_gettime
389# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 442# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
390# undef EV_USE_MONOTONIC 443# undef EV_USE_MONOTONIC
391# define EV_USE_MONOTONIC 1 444# define EV_USE_MONOTONIC 1
445# define EV_NEED_SYSCALL 1
392# else 446# else
393# undef EV_USE_CLOCK_SYSCALL 447# undef EV_USE_CLOCK_SYSCALL
394# define EV_USE_CLOCK_SYSCALL 0 448# define EV_USE_CLOCK_SYSCALL 0
395# endif 449# endif
396#endif 450#endif
… …
410#if !EV_STAT_ENABLE 464#if !EV_STAT_ENABLE
411# undef EV_USE_INOTIFY 465# undef EV_USE_INOTIFY
412# define EV_USE_INOTIFY 0 466# define EV_USE_INOTIFY 0
413#endif 467#endif
414 468
469#if __linux && EV_USE_IOURING
470# include <linux/version.h>
471# if LINUX_VERSION_CODE < KERNEL_VERSION(4,14,0)
472# undef EV_USE_IOURING
473# define EV_USE_IOURING 0
474# endif
475#endif
476
415#if !EV_USE_NANOSLEEP 477#if !EV_USE_NANOSLEEP
416/* hp-ux has it in sys/time.h, which we unconditionally include above */ 478/* hp-ux has it in sys/time.h, which we unconditionally include above */
417# if !defined _WIN32 && !defined __hpux 479# if !defined _WIN32 && !defined __hpux
418# include <sys/select.h> 480# include <sys/select.h>
481# endif
482#endif
483
484#if EV_USE_LINUXAIO
485# include <sys/syscall.h>
486# if SYS_io_getevents && EV_USE_EPOLL /* linuxaio backend requires epoll backend */
487# define EV_NEED_SYSCALL 1
488# else
489# undef EV_USE_LINUXAIO
490# define EV_USE_LINUXAIO 0
491# endif
492#endif
493
494#if EV_USE_IOURING
495# include <sys/syscall.h>
496# if !SYS_io_uring_setup && __linux && !__alpha
497# define SYS_io_uring_setup 425
498# define SYS_io_uring_enter 426
499# define SYS_io_uring_wregister 427
500# endif
501# if SYS_io_uring_setup && EV_USE_EPOLL /* iouring backend requires epoll backend */
502# define EV_NEED_SYSCALL 1
503# else
504# undef EV_USE_IOURING
505# define EV_USE_IOURING 0
419# endif 506# endif
420#endif 507#endif
421 508
422#if EV_USE_INOTIFY 509#if EV_USE_INOTIFY
423# include <sys/statfs.h> 510# include <sys/statfs.h>
… …
428# define EV_USE_INOTIFY 0 515# define EV_USE_INOTIFY 0
429# endif 516# endif
430#endif 517#endif
431 518
432#if EV_USE_EVENTFD 519#if EV_USE_EVENTFD
433/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 520/* our minimum requirement is glibc 2.7 which has the stub, but not the full header */
434# include <stdint.h> 521# include <stdint.h>
435# ifndef EFD_NONBLOCK 522# ifndef EFD_NONBLOCK
436# define EFD_NONBLOCK O_NONBLOCK 523# define EFD_NONBLOCK O_NONBLOCK
437# endif 524# endif
438# ifndef EFD_CLOEXEC 525# ifndef EFD_CLOEXEC
… …
444# endif 531# endif
445EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags); 532EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
446#endif 533#endif
447 534
448#if EV_USE_SIGNALFD 535#if EV_USE_SIGNALFD
449/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 536/* our minimum requirement is glibc 2.7 which has the stub, but not the full header */
450# include <stdint.h> 537# include <stdint.h>
451# ifndef SFD_NONBLOCK 538# ifndef SFD_NONBLOCK
452# define SFD_NONBLOCK O_NONBLOCK 539# define SFD_NONBLOCK O_NONBLOCK
453# endif 540# endif
454# ifndef SFD_CLOEXEC 541# ifndef SFD_CLOEXEC
… …
456# define SFD_CLOEXEC O_CLOEXEC 543# define SFD_CLOEXEC O_CLOEXEC
457# else 544# else
458# define SFD_CLOEXEC 02000000 545# define SFD_CLOEXEC 02000000
459# endif 546# endif
460# endif 547# endif
461EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags); 548EV_CPP (extern "C") int (signalfd) (int fd, const sigset_t *mask, int flags);
462 549
463struct signalfd_siginfo 550struct signalfd_siginfo
464{ 551{
465 uint32_t ssi_signo; 552 uint32_t ssi_signo;
466 char pad[128 - sizeof (uint32_t)]; 553 char pad[128 - sizeof (uint32_t)];
467}; 554};
468#endif 555#endif
469 556
470/**/ 557/* for timerfd, libev core requires TFD_TIMER_CANCEL_ON_SET &c */
558#if EV_USE_TIMERFD
559# include <sys/timerfd.h>
560/* timerfd is only used for periodics */
561# if !(defined (TFD_TIMER_CANCEL_ON_SET) && defined (TFD_CLOEXEC) && defined (TFD_NONBLOCK)) || !EV_PERIODIC_ENABLE
562# undef EV_USE_TIMERFD
563# define EV_USE_TIMERFD 0
564# endif
565#endif
566
567/*****************************************************************************/
471 568
472#if EV_VERIFY >= 3 569#if EV_VERIFY >= 3
473# define EV_FREQUENT_CHECK ev_verify (EV_A) 570# define EV_FREQUENT_CHECK ev_verify (EV_A)
474#else 571#else
475# define EV_FREQUENT_CHECK do { } while (0) 572# define EV_FREQUENT_CHECK do { } while (0)
… …
480 * This value is good at least till the year 4000. 577 * This value is good at least till the year 4000.
481 */ 578 */
482#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */ 579#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
483/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */ 580/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
484 581
485#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 582#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) */ 583#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
487 584
585/* find a portable timestamp that is "always" in the future but fits into time_t.
586 * this is quite hard, and we are mostly guessing - we handle 32 bit signed/unsigned time_t,
587 * and sizes larger than 32 bit, and maybe the unlikely floating point time_t */
588#define EV_TSTAMP_HUGE \
589 (sizeof (time_t) >= 8 ? 10000000000000. \
590 : 0 < (time_t)4294967295 ? 4294967295. \
591 : 2147483647.) \
592
593#ifndef EV_TS_CONST
594# define EV_TS_CONST(nv) nv
595# define EV_TS_TO_MSEC(a) a * 1e3 + 0.9999
596# 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) 597# 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) 598# define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
599# define EV_TV_GET(tv) ((tv).tv_sec + (tv).tv_usec * 1e-6)
600# define EV_TS_GET(ts) ((ts).tv_sec + (ts).tv_nsec * 1e-9)
601#endif
490 602
491/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ 603/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
492/* ECB.H BEGIN */ 604/* ECB.H BEGIN */
493/* 605/*
494 * libecb - http://software.schmorp.de/pkg/libecb 606 * libecb - http://software.schmorp.de/pkg/libecb
… …
532 644
533#ifndef ECB_H 645#ifndef ECB_H
534#define ECB_H 646#define ECB_H
535 647
536/* 16 bits major, 16 bits minor */ 648/* 16 bits major, 16 bits minor */
537#define ECB_VERSION 0x00010004 649#define ECB_VERSION 0x00010006
538 650
539#ifdef _WIN32 651#ifdef _WIN32
540 typedef signed char int8_t; 652 typedef signed char int8_t;
541 typedef unsigned char uint8_t; 653 typedef unsigned char uint8_t;
542 typedef signed short int16_t; 654 typedef signed short int16_t;
… …
559 typedef uint32_t uintptr_t; 671 typedef uint32_t uintptr_t;
560 typedef int32_t intptr_t; 672 typedef int32_t intptr_t;
561 #endif 673 #endif
562#else 674#else
563 #include <inttypes.h> 675 #include <inttypes.h>
564 #if UINTMAX_MAX > 0xffffffffU 676 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
565 #define ECB_PTRSIZE 8 677 #define ECB_PTRSIZE 8
566 #else 678 #else
567 #define ECB_PTRSIZE 4 679 #define ECB_PTRSIZE 4
568 #endif 680 #endif
569#endif 681#endif
… …
607 #define ECB_CLANG_EXTENSION(x) 0 719 #define ECB_CLANG_EXTENSION(x) 0
608#endif 720#endif
609 721
610#define ECB_CPP (__cplusplus+0) 722#define ECB_CPP (__cplusplus+0)
611#define ECB_CPP11 (__cplusplus >= 201103L) 723#define ECB_CPP11 (__cplusplus >= 201103L)
724#define ECB_CPP14 (__cplusplus >= 201402L)
725#define ECB_CPP17 (__cplusplus >= 201703L)
612 726
613#if ECB_CPP 727#if ECB_CPP
614 #define ECB_C 0 728 #define ECB_C 0
615 #define ECB_STDC_VERSION 0 729 #define ECB_STDC_VERSION 0
616#else 730#else
… …
618 #define ECB_STDC_VERSION __STDC_VERSION__ 732 #define ECB_STDC_VERSION __STDC_VERSION__
619#endif 733#endif
620 734
621#define ECB_C99 (ECB_STDC_VERSION >= 199901L) 735#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
622#define ECB_C11 (ECB_STDC_VERSION >= 201112L) 736#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
737#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
623 738
624#if ECB_CPP 739#if ECB_CPP
625 #define ECB_EXTERN_C extern "C" 740 #define ECB_EXTERN_C extern "C"
626 #define ECB_EXTERN_C_BEG ECB_EXTERN_C { 741 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
627 #define ECB_EXTERN_C_END } 742 #define ECB_EXTERN_C_END }
… …
642 757
643#if ECB_NO_SMP 758#if ECB_NO_SMP
644 #define ECB_MEMORY_FENCE do { } while (0) 759 #define ECB_MEMORY_FENCE do { } while (0)
645#endif 760#endif
646 761
762/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
763#if __xlC__ && ECB_CPP
764 #include <builtins.h>
765#endif
766
767#if 1400 <= _MSC_VER
768 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
769#endif
770
647#ifndef ECB_MEMORY_FENCE 771#ifndef ECB_MEMORY_FENCE
648 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 772 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
773 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
649 #if __i386 || __i386__ 774 #if __i386 || __i386__
650 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") 775 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
651 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") 776 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
652 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 777 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
653 #elif ECB_GCC_AMD64 778 #elif ECB_GCC_AMD64
654 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 779 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
655 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") 780 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
656 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 781 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
657 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 782 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
658 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 783 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
784 #elif defined __ARM_ARCH_2__ \
785 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
786 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
787 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
788 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
789 || defined __ARM_ARCH_5TEJ__
790 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
659 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \ 791 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
660 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ 792 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
793 || defined __ARM_ARCH_6T2__
661 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") 794 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
662 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \ 795 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
663 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__ 796 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
664 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") 797 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
665 #elif __aarch64__ 798 #elif __aarch64__
666 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory") 799 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
667 #elif (__sparc || __sparc__) && !__sparcv8 800 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
668 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory") 801 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
669 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") 802 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
670 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") 803 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
671 #elif defined __s390__ || defined __s390x__ 804 #elif defined __s390__ || defined __s390x__
672 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") 805 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
… …
695 #if ECB_GCC_VERSION(4,7) 828 #if ECB_GCC_VERSION(4,7)
696 /* see comment below (stdatomic.h) about the C11 memory model. */ 829 /* see comment below (stdatomic.h) about the C11 memory model. */
697 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST) 830 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
698 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE) 831 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
699 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE) 832 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
833 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
700 834
701 #elif ECB_CLANG_EXTENSION(c_atomic) 835 #elif ECB_CLANG_EXTENSION(c_atomic)
702 /* see comment below (stdatomic.h) about the C11 memory model. */ 836 /* see comment below (stdatomic.h) about the C11 memory model. */
703 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) 837 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
704 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE) 838 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
705 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE) 839 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
840 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
706 841
707 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ 842 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
708 #define ECB_MEMORY_FENCE __sync_synchronize () 843 #define ECB_MEMORY_FENCE __sync_synchronize ()
709 #elif _MSC_VER >= 1500 /* VC++ 2008 */ 844 #elif _MSC_VER >= 1500 /* VC++ 2008 */
710 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */ 845 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
… …
720 #elif defined _WIN32 855 #elif defined _WIN32
721 #include <WinNT.h> 856 #include <WinNT.h>
722 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ 857 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
723 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 858 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
724 #include <mbarrier.h> 859 #include <mbarrier.h>
725 #define ECB_MEMORY_FENCE __machine_rw_barrier () 860 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
726 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier () 861 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
727 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier () 862 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
863 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
728 #elif __xlC__ 864 #elif __xlC__
729 #define ECB_MEMORY_FENCE __sync () 865 #define ECB_MEMORY_FENCE __sync ()
730 #endif 866 #endif
731#endif 867#endif
732 868
733#ifndef ECB_MEMORY_FENCE 869#ifndef ECB_MEMORY_FENCE
734 #if ECB_C11 && !defined __STDC_NO_ATOMICS__ 870 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
735 /* we assume that these memory fences work on all variables/all memory accesses, */ 871 /* we assume that these memory fences work on all variables/all memory accesses, */
736 /* not just C11 atomics and atomic accesses */ 872 /* not just C11 atomics and atomic accesses */
737 #include <stdatomic.h> 873 #include <stdatomic.h>
738 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
739 /* any fence other than seq_cst, which isn't very efficient for us. */
740 /* Why that is, we don't know - either the C11 memory model is quite useless */
741 /* for most usages, or gcc and clang have a bug */
742 /* I *currently* lean towards the latter, and inefficiently implement */
743 /* all three of ecb's fences as a seq_cst fence */
744 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
745 /* for all __atomic_thread_fence's except seq_cst */
746 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst) 874 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
875 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
876 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
747 #endif 877 #endif
748#endif 878#endif
749 879
750#ifndef ECB_MEMORY_FENCE 880#ifndef ECB_MEMORY_FENCE
751 #if !ECB_AVOID_PTHREADS 881 #if !ECB_AVOID_PTHREADS
… …
771 901
772#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE 902#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
773 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 903 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
774#endif 904#endif
775 905
906#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
907 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
908#endif
909
776/*****************************************************************************/ 910/*****************************************************************************/
777 911
778#if ECB_CPP 912#if ECB_CPP
779 #define ecb_inline static inline 913 #define ecb_inline static inline
780#elif ECB_GCC_VERSION(2,5) 914#elif ECB_GCC_VERSION(2,5)
… …
844 #define ecb_deprecated __declspec (deprecated) 978 #define ecb_deprecated __declspec (deprecated)
845#else 979#else
846 #define ecb_deprecated ecb_attribute ((__deprecated__)) 980 #define ecb_deprecated ecb_attribute ((__deprecated__))
847#endif 981#endif
848 982
849#if __MSC_VER >= 1500 983#if _MSC_VER >= 1500
850 #define ecb_deprecated_message(msg) __declspec (deprecated (msg)) 984 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
851#elif ECB_GCC_VERSION(4,5) 985#elif ECB_GCC_VERSION(4,5)
852 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg)) 986 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
853#else 987#else
854 #define ecb_deprecated_message(msg) ecb_deprecated 988 #define ecb_deprecated_message(msg) ecb_deprecated
… …
863#define ecb_unused ecb_attribute ((__unused__)) 997#define ecb_unused ecb_attribute ((__unused__))
864#define ecb_const ecb_attribute ((__const__)) 998#define ecb_const ecb_attribute ((__const__))
865#define ecb_pure ecb_attribute ((__pure__)) 999#define ecb_pure ecb_attribute ((__pure__))
866 1000
867#if ECB_C11 || __IBMC_NORETURN 1001#if ECB_C11 || __IBMC_NORETURN
868 /* http://pic.dhe.ibm.com/infocenter/compbg/v121v141/topic/com.ibm.xlcpp121.bg.doc/language_ref/noreturn.html */ 1002 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
869 #define ecb_noreturn _Noreturn 1003 #define ecb_noreturn _Noreturn
870#elif ECB_CPP11 1004#elif ECB_CPP11
871 #define ecb_noreturn [[noreturn]] 1005 #define ecb_noreturn [[noreturn]]
872#elif _MSC_VER >= 1200 1006#elif _MSC_VER >= 1200
873 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */ 1007 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
… …
910#else 1044#else
911 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x); 1045 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
912 ecb_function_ ecb_const int 1046 ecb_function_ ecb_const int
913 ecb_ctz32 (uint32_t x) 1047 ecb_ctz32 (uint32_t x)
914 { 1048 {
1049#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1050 unsigned long r;
1051 _BitScanForward (&r, x);
1052 return (int)r;
1053#else
915 int r = 0; 1054 int r = 0;
916 1055
917 x &= ~x + 1; /* this isolates the lowest bit */ 1056 x &= ~x + 1; /* this isolates the lowest bit */
918 1057
919#if ECB_branchless_on_i386 1058#if ECB_branchless_on_i386
… …
929 if (x & 0xff00ff00) r += 8; 1068 if (x & 0xff00ff00) r += 8;
930 if (x & 0xffff0000) r += 16; 1069 if (x & 0xffff0000) r += 16;
931#endif 1070#endif
932 1071
933 return r; 1072 return r;
1073#endif
934 } 1074 }
935 1075
936 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x); 1076 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
937 ecb_function_ ecb_const int 1077 ecb_function_ ecb_const int
938 ecb_ctz64 (uint64_t x) 1078 ecb_ctz64 (uint64_t x)
939 { 1079 {
1080#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1081 unsigned long r;
1082 _BitScanForward64 (&r, x);
1083 return (int)r;
1084#else
940 int shift = x & 0xffffffffU ? 0 : 32; 1085 int shift = x & 0xffffffff ? 0 : 32;
941 return ecb_ctz32 (x >> shift) + shift; 1086 return ecb_ctz32 (x >> shift) + shift;
1087#endif
942 } 1088 }
943 1089
944 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x); 1090 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
945 ecb_function_ ecb_const int 1091 ecb_function_ ecb_const int
946 ecb_popcount32 (uint32_t x) 1092 ecb_popcount32 (uint32_t x)
… …
954 } 1100 }
955 1101
956 ecb_function_ ecb_const int ecb_ld32 (uint32_t x); 1102 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
957 ecb_function_ ecb_const int ecb_ld32 (uint32_t x) 1103 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
958 { 1104 {
1105#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1106 unsigned long r;
1107 _BitScanReverse (&r, x);
1108 return (int)r;
1109#else
959 int r = 0; 1110 int r = 0;
960 1111
961 if (x >> 16) { x >>= 16; r += 16; } 1112 if (x >> 16) { x >>= 16; r += 16; }
962 if (x >> 8) { x >>= 8; r += 8; } 1113 if (x >> 8) { x >>= 8; r += 8; }
963 if (x >> 4) { x >>= 4; r += 4; } 1114 if (x >> 4) { x >>= 4; r += 4; }
964 if (x >> 2) { x >>= 2; r += 2; } 1115 if (x >> 2) { x >>= 2; r += 2; }
965 if (x >> 1) { r += 1; } 1116 if (x >> 1) { r += 1; }
966 1117
967 return r; 1118 return r;
1119#endif
968 } 1120 }
969 1121
970 ecb_function_ ecb_const int ecb_ld64 (uint64_t x); 1122 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
971 ecb_function_ ecb_const int ecb_ld64 (uint64_t x) 1123 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
972 { 1124 {
1125#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1126 unsigned long r;
1127 _BitScanReverse64 (&r, x);
1128 return (int)r;
1129#else
973 int r = 0; 1130 int r = 0;
974 1131
975 if (x >> 32) { x >>= 32; r += 32; } 1132 if (x >> 32) { x >>= 32; r += 32; }
976 1133
977 return r + ecb_ld32 (x); 1134 return r + ecb_ld32 (x);
1135#endif
978 } 1136 }
979#endif 1137#endif
980 1138
981ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x); 1139ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
982ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); } 1140ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
… …
1039ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } 1197ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1040ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } 1198ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1041ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } 1199ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1042 1200
1043#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64)) 1201#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1202 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1203 #define ecb_bswap16(x) __builtin_bswap16 (x)
1204 #else
1044 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 1205 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1206 #endif
1045 #define ecb_bswap32(x) __builtin_bswap32 (x) 1207 #define ecb_bswap32(x) __builtin_bswap32 (x)
1046 #define ecb_bswap64(x) __builtin_bswap64 (x) 1208 #define ecb_bswap64(x) __builtin_bswap64 (x)
1209#elif _MSC_VER
1210 #include <stdlib.h>
1211 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1212 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1213 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
1047#else 1214#else
1048 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x); 1215 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1049 ecb_function_ ecb_const uint16_t 1216 ecb_function_ ecb_const uint16_t
1050 ecb_bswap16 (uint16_t x) 1217 ecb_bswap16 (uint16_t x)
1051 { 1218 {
… …
1076#endif 1243#endif
1077 1244
1078/* try to tell the compiler that some condition is definitely true */ 1245/* try to tell the compiler that some condition is definitely true */
1079#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0 1246#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1080 1247
1081ecb_inline ecb_const unsigned char ecb_byteorder_helper (void); 1248ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1082ecb_inline ecb_const unsigned char 1249ecb_inline ecb_const uint32_t
1083ecb_byteorder_helper (void) 1250ecb_byteorder_helper (void)
1084{ 1251{
1085 /* the union code still generates code under pressure in gcc, */ 1252 /* the union code still generates code under pressure in gcc, */
1086 /* but less than using pointers, and always seems to */ 1253 /* but less than using pointers, and always seems to */
1087 /* successfully return a constant. */ 1254 /* successfully return a constant. */
1088 /* the reason why we have this horrible preprocessor mess */ 1255 /* the reason why we have this horrible preprocessor mess */
1089 /* is to avoid it in all cases, at least on common architectures */ 1256 /* is to avoid it in all cases, at least on common architectures */
1090 /* or when using a recent enough gcc version (>= 4.6) */ 1257 /* or when using a recent enough gcc version (>= 4.6) */
1091#if ((__i386 || __i386__) && !__VOS__) || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64
1092 return 0x44;
1093#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ 1258#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1259 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1260 #define ECB_LITTLE_ENDIAN 1
1094 return 0x44; 1261 return 0x44332211;
1095#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ 1262#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1263 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1264 #define ECB_BIG_ENDIAN 1
1096 return 0x11; 1265 return 0x11223344;
1097#else 1266#else
1098 union 1267 union
1099 { 1268 {
1269 uint8_t c[4];
1100 uint32_t i; 1270 uint32_t u;
1101 uint8_t c;
1102 } u = { 0x11223344 }; 1271 } u = { 0x11, 0x22, 0x33, 0x44 };
1103 return u.c; 1272 return u.u;
1104#endif 1273#endif
1105} 1274}
1106 1275
1107ecb_inline ecb_const ecb_bool ecb_big_endian (void); 1276ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1108ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } 1277ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1109ecb_inline ecb_const ecb_bool ecb_little_endian (void); 1278ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1110ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } 1279ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1111 1280
1112#if ECB_GCC_VERSION(3,0) || ECB_C99 1281#if ECB_GCC_VERSION(3,0) || ECB_C99
1113 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) 1282 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1114#else 1283#else
1115 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) 1284 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
… …
1139 return N; 1308 return N;
1140 } 1309 }
1141#else 1310#else
1142 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1311 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1143#endif 1312#endif
1313
1314ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1315ecb_function_ ecb_const uint32_t
1316ecb_binary16_to_binary32 (uint32_t x)
1317{
1318 unsigned int s = (x & 0x8000) << (31 - 15);
1319 int e = (x >> 10) & 0x001f;
1320 unsigned int m = x & 0x03ff;
1321
1322 if (ecb_expect_false (e == 31))
1323 /* infinity or NaN */
1324 e = 255 - (127 - 15);
1325 else if (ecb_expect_false (!e))
1326 {
1327 if (ecb_expect_true (!m))
1328 /* zero, handled by code below by forcing e to 0 */
1329 e = 0 - (127 - 15);
1330 else
1331 {
1332 /* subnormal, renormalise */
1333 unsigned int s = 10 - ecb_ld32 (m);
1334
1335 m = (m << s) & 0x3ff; /* mask implicit bit */
1336 e -= s - 1;
1337 }
1338 }
1339
1340 /* e and m now are normalised, or zero, (or inf or nan) */
1341 e += 127 - 15;
1342
1343 return s | (e << 23) | (m << (23 - 10));
1344}
1345
1346ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1347ecb_function_ ecb_const uint16_t
1348ecb_binary32_to_binary16 (uint32_t x)
1349{
1350 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1351 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1352 unsigned int m = x & 0x007fffff;
1353
1354 x &= 0x7fffffff;
1355
1356 /* if it's within range of binary16 normals, use fast path */
1357 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1358 {
1359 /* mantissa round-to-even */
1360 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1361
1362 /* handle overflow */
1363 if (ecb_expect_false (m >= 0x00800000))
1364 {
1365 m >>= 1;
1366 e += 1;
1367 }
1368
1369 return s | (e << 10) | (m >> (23 - 10));
1370 }
1371
1372 /* handle large numbers and infinity */
1373 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1374 return s | 0x7c00;
1375
1376 /* handle zero, subnormals and small numbers */
1377 if (ecb_expect_true (x < 0x38800000))
1378 {
1379 /* zero */
1380 if (ecb_expect_true (!x))
1381 return s;
1382
1383 /* handle subnormals */
1384
1385 /* too small, will be zero */
1386 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1387 return s;
1388
1389 m |= 0x00800000; /* make implicit bit explicit */
1390
1391 /* very tricky - we need to round to the nearest e (+10) bit value */
1392 {
1393 unsigned int bits = 14 - e;
1394 unsigned int half = (1 << (bits - 1)) - 1;
1395 unsigned int even = (m >> bits) & 1;
1396
1397 /* if this overflows, we will end up with a normalised number */
1398 m = (m + half + even) >> bits;
1399 }
1400
1401 return s | m;
1402 }
1403
1404 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1405 m >>= 13;
1406
1407 return s | 0x7c00 | m | !m;
1408}
1144 1409
1145/*******************************************************************************/ 1410/*******************************************************************************/
1146/* floating point stuff, can be disabled by defining ECB_NO_LIBM */ 1411/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1147 1412
1148/* basically, everything uses "ieee pure-endian" floating point numbers */ 1413/* basically, everything uses "ieee pure-endian" floating point numbers */
… …
1185 #define ECB_NAN ECB_INFINITY 1450 #define ECB_NAN ECB_INFINITY
1186 #endif 1451 #endif
1187 1452
1188 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L 1453 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1189 #define ecb_ldexpf(x,e) ldexpf ((x), (e)) 1454 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1455 #define ecb_frexpf(x,e) frexpf ((x), (e))
1190 #else 1456 #else
1191 #define ecb_ldexpf(x,e) (float) ldexp ((float) (x), (e)) 1457 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1458 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1192 #endif 1459 #endif
1193
1194 /* converts an ieee half/binary16 to a float */
1195 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1196 ecb_function_ ecb_const float
1197 ecb_binary16_to_float (uint16_t x)
1198 {
1199 int e = (x >> 10) & 0x1f;
1200 int m = x & 0x3ff;
1201 float r;
1202
1203 if (!e ) r = ecb_ldexpf (m , -24);
1204 else if (e != 31) r = ecb_ldexpf (m + 0x400, e - 25);
1205 else if (m ) r = ECB_NAN;
1206 else r = ECB_INFINITY;
1207
1208 return x & 0x8000 ? -r : r;
1209 }
1210 1460
1211 /* convert a float to ieee single/binary32 */ 1461 /* convert a float to ieee single/binary32 */
1212 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x); 1462 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1213 ecb_function_ ecb_const uint32_t 1463 ecb_function_ ecb_const uint32_t
1214 ecb_float_to_binary32 (float x) 1464 ecb_float_to_binary32 (float x)
… …
1225 if (x == 0e0f ) return 0x00000000U; 1475 if (x == 0e0f ) return 0x00000000U;
1226 if (x > +3.40282346638528860e+38f) return 0x7f800000U; 1476 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1227 if (x < -3.40282346638528860e+38f) return 0xff800000U; 1477 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1228 if (x != x ) return 0x7fbfffffU; 1478 if (x != x ) return 0x7fbfffffU;
1229 1479
1230 m = frexpf (x, &e) * 0x1000000U; 1480 m = ecb_frexpf (x, &e) * 0x1000000U;
1231 1481
1232 r = m & 0x80000000U; 1482 r = m & 0x80000000U;
1233 1483
1234 if (r) 1484 if (r)
1235 m = -m; 1485 m = -m;
… …
1346 #endif 1596 #endif
1347 1597
1348 return r; 1598 return r;
1349 } 1599 }
1350 1600
1601 /* convert a float to ieee half/binary16 */
1602 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1603 ecb_function_ ecb_const uint16_t
1604 ecb_float_to_binary16 (float x)
1605 {
1606 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1607 }
1608
1609 /* convert an ieee half/binary16 to float */
1610 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1611 ecb_function_ ecb_const float
1612 ecb_binary16_to_float (uint16_t x)
1613 {
1614 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1615 }
1616
1351#endif 1617#endif
1352 1618
1353#endif 1619#endif
1354 1620
1355/* ECB.H END */ 1621/* ECB.H END */
1356 1622
1357#if ECB_MEMORY_FENCE_NEEDS_PTHREADS 1623#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1358/* if your architecture doesn't need memory fences, e.g. because it is 1624/* if your architecture doesn't need memory fences, e.g. because it is
1359 * single-cpu/core, or if you use libev in a project that doesn't use libev 1625 * single-cpu/core, or if you use libev in a project that doesn't use libev
1360 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling 1626 * from multiple threads, then you can define ECB_NO_THREADS when compiling
1361 * libev, in which cases the memory fences become nops. 1627 * libev, in which cases the memory fences become nops.
1362 * alternatively, you can remove this #error and link against libpthread, 1628 * alternatively, you can remove this #error and link against libpthread,
1363 * which will then provide the memory fences. 1629 * which will then provide the memory fences.
1364 */ 1630 */
1365# error "memory fences not defined for your architecture, please report" 1631# error "memory fences not defined for your architecture, please report"
… …
1369# define ECB_MEMORY_FENCE do { } while (0) 1635# define ECB_MEMORY_FENCE do { } while (0)
1370# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 1636# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1371# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 1637# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1372#endif 1638#endif
1373 1639
1374#define expect_false(cond) ecb_expect_false (cond)
1375#define expect_true(cond) ecb_expect_true (cond)
1376#define noinline ecb_noinline
1377
1378#define inline_size ecb_inline 1640#define inline_size ecb_inline
1379 1641
1380#if EV_FEATURE_CODE 1642#if EV_FEATURE_CODE
1381# define inline_speed ecb_inline 1643# define inline_speed ecb_inline
1382#else 1644#else
1383# define inline_speed static noinline 1645# define inline_speed ecb_noinline static
1384#endif 1646#endif
1647
1648/*****************************************************************************/
1649/* raw syscall wrappers */
1650
1651#if EV_NEED_SYSCALL
1652
1653#include <sys/syscall.h>
1654
1655/*
1656 * define some syscall wrappers for common architectures
1657 * this is mostly for nice looks during debugging, not performance.
1658 * our syscalls return < 0, not == -1, on error. which is good
1659 * enough for linux aio.
1660 * TODO: arm is also common nowadays, maybe even mips and x86
1661 * TODO: after implementing this, it suddenly looks like overkill, but its hard to remove...
1662 */
1663#if __GNUC__ && __linux && ECB_AMD64 && !EV_FEATURE_CODE
1664 /* the costly errno access probably kills this for size optimisation */
1665
1666 #define ev_syscall(nr,narg,arg1,arg2,arg3,arg4,arg5,arg6) \
1667 ({ \
1668 long res; \
1669 register unsigned long r6 __asm__ ("r9" ); \
1670 register unsigned long r5 __asm__ ("r8" ); \
1671 register unsigned long r4 __asm__ ("r10"); \
1672 register unsigned long r3 __asm__ ("rdx"); \
1673 register unsigned long r2 __asm__ ("rsi"); \
1674 register unsigned long r1 __asm__ ("rdi"); \
1675 if (narg >= 6) r6 = (unsigned long)(arg6); \
1676 if (narg >= 5) r5 = (unsigned long)(arg5); \
1677 if (narg >= 4) r4 = (unsigned long)(arg4); \
1678 if (narg >= 3) r3 = (unsigned long)(arg3); \
1679 if (narg >= 2) r2 = (unsigned long)(arg2); \
1680 if (narg >= 1) r1 = (unsigned long)(arg1); \
1681 __asm__ __volatile__ ( \
1682 "syscall\n\t" \
1683 : "=a" (res) \
1684 : "0" (nr), "r" (r1), "r" (r2), "r" (r3), "r" (r4), "r" (r5) \
1685 : "cc", "r11", "cx", "memory"); \
1686 errno = -res; \
1687 res; \
1688 })
1689
1690#endif
1691
1692#ifdef ev_syscall
1693 #define ev_syscall0(nr) ev_syscall (nr, 0, 0, 0, 0, 0, 0, 0)
1694 #define ev_syscall1(nr,arg1) ev_syscall (nr, 1, arg1, 0, 0, 0, 0, 0)
1695 #define ev_syscall2(nr,arg1,arg2) ev_syscall (nr, 2, arg1, arg2, 0, 0, 0, 0)
1696 #define ev_syscall3(nr,arg1,arg2,arg3) ev_syscall (nr, 3, arg1, arg2, arg3, 0, 0, 0)
1697 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) ev_syscall (nr, 3, arg1, arg2, arg3, arg4, 0, 0)
1698 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) ev_syscall (nr, 5, arg1, arg2, arg3, arg4, arg5, 0)
1699 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) ev_syscall (nr, 6, arg1, arg2, arg3, arg4, arg5,arg6)
1700#else
1701 #define ev_syscall0(nr) syscall (nr)
1702 #define ev_syscall1(nr,arg1) syscall (nr, arg1)
1703 #define ev_syscall2(nr,arg1,arg2) syscall (nr, arg1, arg2)
1704 #define ev_syscall3(nr,arg1,arg2,arg3) syscall (nr, arg1, arg2, arg3)
1705 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) syscall (nr, arg1, arg2, arg3, arg4)
1706 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) syscall (nr, arg1, arg2, arg3, arg4, arg5)
1707 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) syscall (nr, arg1, arg2, arg3, arg4, arg5,arg6)
1708#endif
1709
1710#endif
1711
1712/*****************************************************************************/
1385 1713
1386#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1714#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
1387 1715
1388#if EV_MINPRI == EV_MAXPRI 1716#if EV_MINPRI == EV_MAXPRI
1389# define ABSPRI(w) (((W)w), 0) 1717# define ABSPRI(w) (((W)w), 0)
1390#else 1718#else
1391# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1719# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
1392#endif 1720#endif
1393 1721
1394#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1722#define EMPTY /* required for microsofts broken pseudo-c compiler */
1395#define EMPTY2(a,b) /* used to suppress some warnings */
1396 1723
1397typedef ev_watcher *W; 1724typedef ev_watcher *W;
1398typedef ev_watcher_list *WL; 1725typedef ev_watcher_list *WL;
1399typedef ev_watcher_time *WT; 1726typedef ev_watcher_time *WT;
1400 1727
… …
1425# include "ev_win32.c" 1752# include "ev_win32.c"
1426#endif 1753#endif
1427 1754
1428/*****************************************************************************/ 1755/*****************************************************************************/
1429 1756
1757#if EV_USE_LINUXAIO
1758# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1759#endif
1760
1430/* define a suitable floor function (only used by periodics atm) */ 1761/* define a suitable floor function (only used by periodics atm) */
1431 1762
1432#if EV_USE_FLOOR 1763#if EV_USE_FLOOR
1433# include <math.h> 1764# include <math.h>
1434# define ev_floor(v) floor (v) 1765# define ev_floor(v) floor (v)
1435#else 1766#else
1436 1767
1437#include <float.h> 1768#include <float.h>
1438 1769
1439/* a floor() replacement function, should be independent of ev_tstamp type */ 1770/* a floor() replacement function, should be independent of ev_tstamp type */
1771ecb_noinline
1440static ev_tstamp noinline 1772static ev_tstamp
1441ev_floor (ev_tstamp v) 1773ev_floor (ev_tstamp v)
1442{ 1774{
1443 /* the choice of shift factor is not terribly important */ 1775 /* the choice of shift factor is not terribly important */
1444#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1776#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1445 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1777 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1446#else 1778#else
1447 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; 1779 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1448#endif 1780#endif
1449 1781
1782 /* special treatment for negative arguments */
1783 if (ecb_expect_false (v < 0.))
1784 {
1785 ev_tstamp f = -ev_floor (-v);
1786
1787 return f - (f == v ? 0 : 1);
1788 }
1789
1450 /* argument too large for an unsigned long? */ 1790 /* argument too large for an unsigned long? then reduce it */
1451 if (expect_false (v >= shift)) 1791 if (ecb_expect_false (v >= shift))
1452 { 1792 {
1453 ev_tstamp f; 1793 ev_tstamp f;
1454 1794
1455 if (v == v - 1.) 1795 if (v == v - 1.)
1456 return v; /* very large number */ 1796 return v; /* very large numbers are assumed to be integer */
1457 1797
1458 f = shift * ev_floor (v * (1. / shift)); 1798 f = shift * ev_floor (v * (1. / shift));
1459 return f + ev_floor (v - f); 1799 return f + ev_floor (v - f);
1460 } 1800 }
1461 1801
1462 /* special treatment for negative args? */
1463 if (expect_false (v < 0.))
1464 {
1465 ev_tstamp f = -ev_floor (-v);
1466
1467 return f - (f == v ? 0 : 1);
1468 }
1469
1470 /* fits into an unsigned long */ 1802 /* fits into an unsigned long */
1471 return (unsigned long)v; 1803 return (unsigned long)v;
1472} 1804}
1473 1805
1474#endif 1806#endif
… …
1477 1809
1478#ifdef __linux 1810#ifdef __linux
1479# include <sys/utsname.h> 1811# include <sys/utsname.h>
1480#endif 1812#endif
1481 1813
1482static unsigned int noinline ecb_cold 1814ecb_noinline ecb_cold
1815static unsigned int
1483ev_linux_version (void) 1816ev_linux_version (void)
1484{ 1817{
1485#ifdef __linux 1818#ifdef __linux
1486 unsigned int v = 0; 1819 unsigned int v = 0;
1487 struct utsname buf; 1820 struct utsname buf;
… …
1516} 1849}
1517 1850
1518/*****************************************************************************/ 1851/*****************************************************************************/
1519 1852
1520#if EV_AVOID_STDIO 1853#if EV_AVOID_STDIO
1521static void noinline ecb_cold 1854ecb_noinline ecb_cold
1855static void
1522ev_printerr (const char *msg) 1856ev_printerr (const char *msg)
1523{ 1857{
1524 write (STDERR_FILENO, msg, strlen (msg)); 1858 write (STDERR_FILENO, msg, strlen (msg));
1525} 1859}
1526#endif 1860#endif
1527 1861
1528static void (*syserr_cb)(const char *msg) EV_THROW; 1862static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
1529 1863
1530void ecb_cold 1864ecb_cold
1865void
1531ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW 1866ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
1532{ 1867{
1533 syserr_cb = cb; 1868 syserr_cb = cb;
1534} 1869}
1535 1870
1536static void noinline ecb_cold 1871ecb_noinline ecb_cold
1872static void
1537ev_syserr (const char *msg) 1873ev_syserr (const char *msg)
1538{ 1874{
1539 if (!msg) 1875 if (!msg)
1540 msg = "(libev) system error"; 1876 msg = "(libev) system error";
1541 1877
… …
1554 abort (); 1890 abort ();
1555 } 1891 }
1556} 1892}
1557 1893
1558static void * 1894static void *
1559ev_realloc_emul (void *ptr, long size) EV_THROW 1895ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
1560{ 1896{
1561 /* some systems, notably openbsd and darwin, fail to properly 1897 /* some systems, notably openbsd and darwin, fail to properly
1562 * implement realloc (x, 0) (as required by both ansi c-89 and 1898 * implement realloc (x, 0) (as required by both ansi c-89 and
1563 * the single unix specification, so work around them here. 1899 * the single unix specification, so work around them here.
1564 * recently, also (at least) fedora and debian started breaking it, 1900 * recently, also (at least) fedora and debian started breaking it,
… …
1570 1906
1571 free (ptr); 1907 free (ptr);
1572 return 0; 1908 return 0;
1573} 1909}
1574 1910
1575static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul; 1911static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
1576 1912
1577void ecb_cold 1913ecb_cold
1914void
1578ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW 1915ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
1579{ 1916{
1580 alloc = cb; 1917 alloc = cb;
1581} 1918}
1582 1919
1583inline_speed void * 1920inline_speed void *
… …
1610typedef struct 1947typedef struct
1611{ 1948{
1612 WL head; 1949 WL head;
1613 unsigned char events; /* the events watched for */ 1950 unsigned char events; /* the events watched for */
1614 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 1951 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
1615 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1952 unsigned char emask; /* some backends store the actual kernel mask in here */
1616 unsigned char unused; 1953 unsigned char eflags; /* flags field for use by backends */
1617#if EV_USE_EPOLL 1954#if EV_USE_EPOLL
1618 unsigned int egen; /* generation counter to counter epoll bugs */ 1955 unsigned int egen; /* generation counter to counter epoll bugs */
1619#endif 1956#endif
1620#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 1957#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1621 SOCKET handle; 1958 SOCKET handle;
… …
1675 static struct ev_loop default_loop_struct; 2012 static struct ev_loop default_loop_struct;
1676 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */ 2013 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
1677 2014
1678#else 2015#else
1679 2016
1680 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */ 2017 EV_API_DECL ev_tstamp ev_rt_now = EV_TS_CONST (0.); /* needs to be initialised to make it a definition despite extern */
1681 #define VAR(name,decl) static decl; 2018 #define VAR(name,decl) static decl;
1682 #include "ev_vars.h" 2019 #include "ev_vars.h"
1683 #undef VAR 2020 #undef VAR
1684 2021
1685 static int ev_default_loop_ptr; 2022 static int ev_default_loop_ptr;
1686 2023
1687#endif 2024#endif
1688 2025
1689#if EV_FEATURE_API 2026#if EV_FEATURE_API
1690# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 2027# define EV_RELEASE_CB if (ecb_expect_false (release_cb)) release_cb (EV_A)
1691# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 2028# define EV_ACQUIRE_CB if (ecb_expect_false (acquire_cb)) acquire_cb (EV_A)
1692# define EV_INVOKE_PENDING invoke_cb (EV_A) 2029# define EV_INVOKE_PENDING invoke_cb (EV_A)
1693#else 2030#else
1694# define EV_RELEASE_CB (void)0 2031# define EV_RELEASE_CB (void)0
1695# define EV_ACQUIRE_CB (void)0 2032# define EV_ACQUIRE_CB (void)0
1696# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 2033# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
… …
1700 2037
1701/*****************************************************************************/ 2038/*****************************************************************************/
1702 2039
1703#ifndef EV_HAVE_EV_TIME 2040#ifndef EV_HAVE_EV_TIME
1704ev_tstamp 2041ev_tstamp
1705ev_time (void) EV_THROW 2042ev_time (void) EV_NOEXCEPT
1706{ 2043{
1707#if EV_USE_REALTIME 2044#if EV_USE_REALTIME
1708 if (expect_true (have_realtime)) 2045 if (ecb_expect_true (have_realtime))
1709 { 2046 {
1710 struct timespec ts; 2047 struct timespec ts;
1711 clock_gettime (CLOCK_REALTIME, &ts); 2048 clock_gettime (CLOCK_REALTIME, &ts);
1712 return ts.tv_sec + ts.tv_nsec * 1e-9; 2049 return EV_TS_GET (ts);
1713 } 2050 }
1714#endif 2051#endif
1715 2052
2053 {
1716 struct timeval tv; 2054 struct timeval tv;
1717 gettimeofday (&tv, 0); 2055 gettimeofday (&tv, 0);
1718 return tv.tv_sec + tv.tv_usec * 1e-6; 2056 return EV_TV_GET (tv);
2057 }
1719} 2058}
1720#endif 2059#endif
1721 2060
1722inline_size ev_tstamp 2061inline_size ev_tstamp
1723get_clock (void) 2062get_clock (void)
1724{ 2063{
1725#if EV_USE_MONOTONIC 2064#if EV_USE_MONOTONIC
1726 if (expect_true (have_monotonic)) 2065 if (ecb_expect_true (have_monotonic))
1727 { 2066 {
1728 struct timespec ts; 2067 struct timespec ts;
1729 clock_gettime (CLOCK_MONOTONIC, &ts); 2068 clock_gettime (CLOCK_MONOTONIC, &ts);
1730 return ts.tv_sec + ts.tv_nsec * 1e-9; 2069 return EV_TS_GET (ts);
1731 } 2070 }
1732#endif 2071#endif
1733 2072
1734 return ev_time (); 2073 return ev_time ();
1735} 2074}
1736 2075
1737#if EV_MULTIPLICITY 2076#if EV_MULTIPLICITY
1738ev_tstamp 2077ev_tstamp
1739ev_now (EV_P) EV_THROW 2078ev_now (EV_P) EV_NOEXCEPT
1740{ 2079{
1741 return ev_rt_now; 2080 return ev_rt_now;
1742} 2081}
1743#endif 2082#endif
1744 2083
1745void 2084void
1746ev_sleep (ev_tstamp delay) EV_THROW 2085ev_sleep (ev_tstamp delay) EV_NOEXCEPT
1747{ 2086{
1748 if (delay > 0.) 2087 if (delay > EV_TS_CONST (0.))
1749 { 2088 {
1750#if EV_USE_NANOSLEEP 2089#if EV_USE_NANOSLEEP
1751 struct timespec ts; 2090 struct timespec ts;
1752 2091
1753 EV_TS_SET (ts, delay); 2092 EV_TS_SET (ts, delay);
1754 nanosleep (&ts, 0); 2093 nanosleep (&ts, 0);
1755#elif defined _WIN32 2094#elif defined _WIN32
2095 /* maybe this should round up, as ms is very low resolution */
2096 /* compared to select (µs) or nanosleep (ns) */
1756 Sleep ((unsigned long)(delay * 1e3)); 2097 Sleep ((unsigned long)(EV_TS_TO_MSEC (delay)));
1757#else 2098#else
1758 struct timeval tv; 2099 struct timeval tv;
1759 2100
1760 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 2101 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
1761 /* something not guaranteed by newer posix versions, but guaranteed */ 2102 /* something not guaranteed by newer posix versions, but guaranteed */
… …
1791 } 2132 }
1792 2133
1793 return ncur; 2134 return ncur;
1794} 2135}
1795 2136
1796static void * noinline ecb_cold 2137ecb_noinline ecb_cold
2138static void *
1797array_realloc (int elem, void *base, int *cur, int cnt) 2139array_realloc (int elem, void *base, int *cur, int cnt)
1798{ 2140{
1799 *cur = array_nextsize (elem, *cur, cnt); 2141 *cur = array_nextsize (elem, *cur, cnt);
1800 return ev_realloc (base, elem * *cur); 2142 return ev_realloc (base, elem * *cur);
1801} 2143}
1802 2144
2145#define array_needsize_noinit(base,offset,count)
2146
1803#define array_init_zero(base,count) \ 2147#define array_needsize_zerofill(base,offset,count) \
1804 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2148 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
1805 2149
1806#define array_needsize(type,base,cur,cnt,init) \ 2150#define array_needsize(type,base,cur,cnt,init) \
1807 if (expect_false ((cnt) > (cur))) \ 2151 if (ecb_expect_false ((cnt) > (cur))) \
1808 { \ 2152 { \
1809 int ecb_unused ocur_ = (cur); \ 2153 ecb_unused int ocur_ = (cur); \
1810 (base) = (type *)array_realloc \ 2154 (base) = (type *)array_realloc \
1811 (sizeof (type), (base), &(cur), (cnt)); \ 2155 (sizeof (type), (base), &(cur), (cnt)); \
1812 init ((base) + (ocur_), (cur) - ocur_); \ 2156 init ((base), ocur_, ((cur) - ocur_)); \
1813 } 2157 }
1814 2158
1815#if 0 2159#if 0
1816#define array_slim(type,stem) \ 2160#define array_slim(type,stem) \
1817 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2161 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
1826 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2170 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
1827 2171
1828/*****************************************************************************/ 2172/*****************************************************************************/
1829 2173
1830/* dummy callback for pending events */ 2174/* dummy callback for pending events */
1831static void noinline 2175ecb_noinline
2176static void
1832pendingcb (EV_P_ ev_prepare *w, int revents) 2177pendingcb (EV_P_ ev_prepare *w, int revents)
1833{ 2178{
1834} 2179}
1835 2180
1836void noinline 2181ecb_noinline
2182void
1837ev_feed_event (EV_P_ void *w, int revents) EV_THROW 2183ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
1838{ 2184{
1839 W w_ = (W)w; 2185 W w_ = (W)w;
1840 int pri = ABSPRI (w_); 2186 int pri = ABSPRI (w_);
1841 2187
1842 if (expect_false (w_->pending)) 2188 if (ecb_expect_false (w_->pending))
1843 pendings [pri][w_->pending - 1].events |= revents; 2189 pendings [pri][w_->pending - 1].events |= revents;
1844 else 2190 else
1845 { 2191 {
1846 w_->pending = ++pendingcnt [pri]; 2192 w_->pending = ++pendingcnt [pri];
1847 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2193 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
1848 pendings [pri][w_->pending - 1].w = w_; 2194 pendings [pri][w_->pending - 1].w = w_;
1849 pendings [pri][w_->pending - 1].events = revents; 2195 pendings [pri][w_->pending - 1].events = revents;
1850 } 2196 }
1851 2197
1852 pendingpri = NUMPRI - 1; 2198 pendingpri = NUMPRI - 1;
1853} 2199}
1854 2200
1855inline_speed void 2201inline_speed void
1856feed_reverse (EV_P_ W w) 2202feed_reverse (EV_P_ W w)
1857{ 2203{
1858 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2204 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
1859 rfeeds [rfeedcnt++] = w; 2205 rfeeds [rfeedcnt++] = w;
1860} 2206}
1861 2207
1862inline_size void 2208inline_size void
1863feed_reverse_done (EV_P_ int revents) 2209feed_reverse_done (EV_P_ int revents)
… …
1898inline_speed void 2244inline_speed void
1899fd_event (EV_P_ int fd, int revents) 2245fd_event (EV_P_ int fd, int revents)
1900{ 2246{
1901 ANFD *anfd = anfds + fd; 2247 ANFD *anfd = anfds + fd;
1902 2248
1903 if (expect_true (!anfd->reify)) 2249 if (ecb_expect_true (!anfd->reify))
1904 fd_event_nocheck (EV_A_ fd, revents); 2250 fd_event_nocheck (EV_A_ fd, revents);
1905} 2251}
1906 2252
1907void 2253void
1908ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW 2254ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
1909{ 2255{
1910 if (fd >= 0 && fd < anfdmax) 2256 if (fd >= 0 && fd < anfdmax)
1911 fd_event_nocheck (EV_A_ fd, revents); 2257 fd_event_nocheck (EV_A_ fd, revents);
1912} 2258}
1913 2259
… …
1916inline_size void 2262inline_size void
1917fd_reify (EV_P) 2263fd_reify (EV_P)
1918{ 2264{
1919 int i; 2265 int i;
1920 2266
2267 /* most backends do not modify the fdchanges list in backend_modfiy.
2268 * except io_uring, which has fixed-size buffers which might force us
2269 * to handle events in backend_modify, causing fdchangesd to be amended,
2270 * which could result in an endless loop.
2271 * to avoid this, we do not dynamically handle fds that were added
2272 * during fd_reify. that menas thast for those backends, fdchangecnt
2273 * might be non-zero during poll, which must cause them to not block.
2274 * to not put too much of a burden on other backends, this detail
2275 * needs to be handled in the backend.
2276 */
2277 int changecnt = fdchangecnt;
2278
1921#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 2279#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1922 for (i = 0; i < fdchangecnt; ++i) 2280 for (i = 0; i < changecnt; ++i)
1923 { 2281 {
1924 int fd = fdchanges [i]; 2282 int fd = fdchanges [i];
1925 ANFD *anfd = anfds + fd; 2283 ANFD *anfd = anfds + fd;
1926 2284
1927 if (anfd->reify & EV__IOFDSET && anfd->head) 2285 if (anfd->reify & EV__IOFDSET && anfd->head)
… …
1941 } 2299 }
1942 } 2300 }
1943 } 2301 }
1944#endif 2302#endif
1945 2303
1946 for (i = 0; i < fdchangecnt; ++i) 2304 for (i = 0; i < changecnt; ++i)
1947 { 2305 {
1948 int fd = fdchanges [i]; 2306 int fd = fdchanges [i];
1949 ANFD *anfd = anfds + fd; 2307 ANFD *anfd = anfds + fd;
1950 ev_io *w; 2308 ev_io *w;
1951 2309
1952 unsigned char o_events = anfd->events; 2310 unsigned char o_events = anfd->events;
1953 unsigned char o_reify = anfd->reify; 2311 unsigned char o_reify = anfd->reify;
1954 2312
1955 anfd->reify = 0; 2313 anfd->reify = 0;
1956 2314
1957 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 2315 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
1958 { 2316 {
1959 anfd->events = 0; 2317 anfd->events = 0;
1960 2318
1961 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2319 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1962 anfd->events |= (unsigned char)w->events; 2320 anfd->events |= (unsigned char)w->events;
… …
1967 2325
1968 if (o_reify & EV__IOFDSET) 2326 if (o_reify & EV__IOFDSET)
1969 backend_modify (EV_A_ fd, o_events, anfd->events); 2327 backend_modify (EV_A_ fd, o_events, anfd->events);
1970 } 2328 }
1971 2329
2330 /* normally, fdchangecnt hasn't changed. if it has, then new fds have been added.
2331 * this is a rare case (see beginning comment in this function), so we copy them to the
2332 * front and hope the backend handles this case.
2333 */
2334 if (ecb_expect_false (fdchangecnt != changecnt))
2335 memmove (fdchanges, fdchanges + changecnt, (fdchangecnt - changecnt) * sizeof (*fdchanges));
2336
1972 fdchangecnt = 0; 2337 fdchangecnt -= changecnt;
1973} 2338}
1974 2339
1975/* something about the given fd changed */ 2340/* something about the given fd changed */
1976inline_size void 2341inline_size
2342void
1977fd_change (EV_P_ int fd, int flags) 2343fd_change (EV_P_ int fd, int flags)
1978{ 2344{
1979 unsigned char reify = anfds [fd].reify; 2345 unsigned char reify = anfds [fd].reify;
1980 anfds [fd].reify |= flags; 2346 anfds [fd].reify |= flags;
1981 2347
1982 if (expect_true (!reify)) 2348 if (ecb_expect_true (!reify))
1983 { 2349 {
1984 ++fdchangecnt; 2350 ++fdchangecnt;
1985 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2351 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
1986 fdchanges [fdchangecnt - 1] = fd; 2352 fdchanges [fdchangecnt - 1] = fd;
1987 } 2353 }
1988} 2354}
1989 2355
1990/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2356/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1991inline_speed void ecb_cold 2357inline_speed ecb_cold void
1992fd_kill (EV_P_ int fd) 2358fd_kill (EV_P_ int fd)
1993{ 2359{
1994 ev_io *w; 2360 ev_io *w;
1995 2361
1996 while ((w = (ev_io *)anfds [fd].head)) 2362 while ((w = (ev_io *)anfds [fd].head))
… …
1999 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2365 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
2000 } 2366 }
2001} 2367}
2002 2368
2003/* check whether the given fd is actually valid, for error recovery */ 2369/* check whether the given fd is actually valid, for error recovery */
2004inline_size int ecb_cold 2370inline_size ecb_cold int
2005fd_valid (int fd) 2371fd_valid (int fd)
2006{ 2372{
2007#ifdef _WIN32 2373#ifdef _WIN32
2008 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2374 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
2009#else 2375#else
2010 return fcntl (fd, F_GETFD) != -1; 2376 return fcntl (fd, F_GETFD) != -1;
2011#endif 2377#endif
2012} 2378}
2013 2379
2014/* called on EBADF to verify fds */ 2380/* called on EBADF to verify fds */
2015static void noinline ecb_cold 2381ecb_noinline ecb_cold
2382static void
2016fd_ebadf (EV_P) 2383fd_ebadf (EV_P)
2017{ 2384{
2018 int fd; 2385 int fd;
2019 2386
2020 for (fd = 0; fd < anfdmax; ++fd) 2387 for (fd = 0; fd < anfdmax; ++fd)
… …
2022 if (!fd_valid (fd) && errno == EBADF) 2389 if (!fd_valid (fd) && errno == EBADF)
2023 fd_kill (EV_A_ fd); 2390 fd_kill (EV_A_ fd);
2024} 2391}
2025 2392
2026/* called on ENOMEM in select/poll to kill some fds and retry */ 2393/* called on ENOMEM in select/poll to kill some fds and retry */
2027static void noinline ecb_cold 2394ecb_noinline ecb_cold
2395static void
2028fd_enomem (EV_P) 2396fd_enomem (EV_P)
2029{ 2397{
2030 int fd; 2398 int fd;
2031 2399
2032 for (fd = anfdmax; fd--; ) 2400 for (fd = anfdmax; fd--; )
… …
2036 break; 2404 break;
2037 } 2405 }
2038} 2406}
2039 2407
2040/* usually called after fork if backend needs to re-arm all fds from scratch */ 2408/* usually called after fork if backend needs to re-arm all fds from scratch */
2041static void noinline 2409ecb_noinline
2410static void
2042fd_rearm_all (EV_P) 2411fd_rearm_all (EV_P)
2043{ 2412{
2044 int fd; 2413 int fd;
2045 2414
2046 for (fd = 0; fd < anfdmax; ++fd) 2415 for (fd = 0; fd < anfdmax; ++fd)
… …
2099 ev_tstamp minat; 2468 ev_tstamp minat;
2100 ANHE *minpos; 2469 ANHE *minpos;
2101 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2470 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
2102 2471
2103 /* find minimum child */ 2472 /* find minimum child */
2104 if (expect_true (pos + DHEAP - 1 < E)) 2473 if (ecb_expect_true (pos + DHEAP - 1 < E))
2105 { 2474 {
2106 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2475 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
2107 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2476 if ( minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
2108 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2477 if ( minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
2109 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2478 if ( minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
2110 } 2479 }
2111 else if (pos < E) 2480 else if (pos < E)
2112 { 2481 {
2113 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2482 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
2114 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2483 if (pos + 1 < E && minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
2115 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2484 if (pos + 2 < E && minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
2116 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2485 if (pos + 3 < E && minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
2117 } 2486 }
2118 else 2487 else
2119 break; 2488 break;
2120 2489
2121 if (ANHE_at (he) <= minat) 2490 if (ANHE_at (he) <= minat)
… …
2129 2498
2130 heap [k] = he; 2499 heap [k] = he;
2131 ev_active (ANHE_w (he)) = k; 2500 ev_active (ANHE_w (he)) = k;
2132} 2501}
2133 2502
2134#else /* 4HEAP */ 2503#else /* not 4HEAP */
2135 2504
2136#define HEAP0 1 2505#define HEAP0 1
2137#define HPARENT(k) ((k) >> 1) 2506#define HPARENT(k) ((k) >> 1)
2138#define UPHEAP_DONE(p,k) (!(p)) 2507#define UPHEAP_DONE(p,k) (!(p))
2139 2508
… …
2227 2596
2228/*****************************************************************************/ 2597/*****************************************************************************/
2229 2598
2230#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2599#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2231 2600
2232static void noinline ecb_cold 2601ecb_noinline ecb_cold
2602static void
2233evpipe_init (EV_P) 2603evpipe_init (EV_P)
2234{ 2604{
2235 if (!ev_is_active (&pipe_w)) 2605 if (!ev_is_active (&pipe_w))
2236 { 2606 {
2237 int fds [2]; 2607 int fds [2];
… …
2277inline_speed void 2647inline_speed void
2278evpipe_write (EV_P_ EV_ATOMIC_T *flag) 2648evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2279{ 2649{
2280 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */ 2650 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2281 2651
2282 if (expect_true (*flag)) 2652 if (ecb_expect_true (*flag))
2283 return; 2653 return;
2284 2654
2285 *flag = 1; 2655 *flag = 1;
2286 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */ 2656 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2287 2657
… …
2308#endif 2678#endif
2309 { 2679 {
2310#ifdef _WIN32 2680#ifdef _WIN32
2311 WSABUF buf; 2681 WSABUF buf;
2312 DWORD sent; 2682 DWORD sent;
2313 buf.buf = &buf; 2683 buf.buf = (char *)&buf;
2314 buf.len = 1; 2684 buf.len = 1;
2315 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0); 2685 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2316#else 2686#else
2317 write (evpipe [1], &(evpipe [1]), 1); 2687 write (evpipe [1], &(evpipe [1]), 1);
2318#endif 2688#endif
… …
2364 sig_pending = 0; 2734 sig_pending = 0;
2365 2735
2366 ECB_MEMORY_FENCE; 2736 ECB_MEMORY_FENCE;
2367 2737
2368 for (i = EV_NSIG - 1; i--; ) 2738 for (i = EV_NSIG - 1; i--; )
2369 if (expect_false (signals [i].pending)) 2739 if (ecb_expect_false (signals [i].pending))
2370 ev_feed_signal_event (EV_A_ i + 1); 2740 ev_feed_signal_event (EV_A_ i + 1);
2371 } 2741 }
2372#endif 2742#endif
2373 2743
2374#if EV_ASYNC_ENABLE 2744#if EV_ASYNC_ENABLE
… …
2390} 2760}
2391 2761
2392/*****************************************************************************/ 2762/*****************************************************************************/
2393 2763
2394void 2764void
2395ev_feed_signal (int signum) EV_THROW 2765ev_feed_signal (int signum) EV_NOEXCEPT
2396{ 2766{
2397#if EV_MULTIPLICITY 2767#if EV_MULTIPLICITY
2398 EV_P; 2768 EV_P;
2399 ECB_MEMORY_FENCE_ACQUIRE; 2769 ECB_MEMORY_FENCE_ACQUIRE;
2400 EV_A = signals [signum - 1].loop; 2770 EV_A = signals [signum - 1].loop;
… …
2415#endif 2785#endif
2416 2786
2417 ev_feed_signal (signum); 2787 ev_feed_signal (signum);
2418} 2788}
2419 2789
2420void noinline 2790ecb_noinline
2791void
2421ev_feed_signal_event (EV_P_ int signum) EV_THROW 2792ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
2422{ 2793{
2423 WL w; 2794 WL w;
2424 2795
2425 if (expect_false (signum <= 0 || signum >= EV_NSIG)) 2796 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
2426 return; 2797 return;
2427 2798
2428 --signum; 2799 --signum;
2429 2800
2430#if EV_MULTIPLICITY 2801#if EV_MULTIPLICITY
2431 /* it is permissible to try to feed a signal to the wrong loop */ 2802 /* it is permissible to try to feed a signal to the wrong loop */
2432 /* or, likely more useful, feeding a signal nobody is waiting for */ 2803 /* or, likely more useful, feeding a signal nobody is waiting for */
2433 2804
2434 if (expect_false (signals [signum].loop != EV_A)) 2805 if (ecb_expect_false (signals [signum].loop != EV_A))
2435 return; 2806 return;
2436#endif 2807#endif
2437 2808
2438 signals [signum].pending = 0; 2809 signals [signum].pending = 0;
2439 ECB_MEMORY_FENCE_RELEASE; 2810 ECB_MEMORY_FENCE_RELEASE;
… …
2523 2894
2524#endif 2895#endif
2525 2896
2526/*****************************************************************************/ 2897/*****************************************************************************/
2527 2898
2899#if EV_USE_TIMERFD
2900
2901static void periodics_reschedule (EV_P);
2902
2903static void
2904timerfdcb (EV_P_ ev_io *iow, int revents)
2905{
2906 struct itimerspec its = { 0 };
2907
2908 /* since we can't easily come zup with a (portable) maximum value of time_t,
2909 * we wake up once per month, which hopefully is rare enough to not
2910 * be a problem. */
2911 its.it_value.tv_sec = ev_rt_now + 86400 * 30;
2912 timerfd_settime (timerfd, TFD_TIMER_ABSTIME | TFD_TIMER_CANCEL_ON_SET, &its, 0);
2913
2914 ev_rt_now = ev_time ();
2915 /* periodics_reschedule only needs ev_rt_now */
2916 /* but maybe in the future we want the full treatment. */
2917 /*
2918 now_floor = EV_TS_CONST (0.);
2919 time_update (EV_A_ EV_TSTAMP_HUGE);
2920 */
2921 periodics_reschedule (EV_A);
2922}
2923
2924ecb_noinline ecb_cold
2925static void
2926evtimerfd_init (EV_P)
2927{
2928 if (!ev_is_active (&timerfd_w))
2929 {
2930 timerfd = timerfd_create (CLOCK_REALTIME, TFD_NONBLOCK | TFD_CLOEXEC);
2931
2932 if (timerfd >= 0)
2933 {
2934 fd_intern (timerfd); /* just to be sure */
2935
2936 ev_io_init (&timerfd_w, timerfdcb, timerfd, EV_READ);
2937 ev_set_priority (&timerfd_w, EV_MINPRI);
2938 ev_io_start (EV_A_ &timerfd_w);
2939 ev_unref (EV_A); /* watcher should not keep loop alive */
2940
2941 /* (re-) arm timer */
2942 timerfdcb (EV_A_ 0, 0);
2943 }
2944 }
2945}
2946
2947#endif
2948
2949/*****************************************************************************/
2950
2528#if EV_USE_IOCP 2951#if EV_USE_IOCP
2529# include "ev_iocp.c" 2952# include "ev_iocp.c"
2530#endif 2953#endif
2531#if EV_USE_PORT 2954#if EV_USE_PORT
2532# include "ev_port.c" 2955# include "ev_port.c"
… …
2535# include "ev_kqueue.c" 2958# include "ev_kqueue.c"
2536#endif 2959#endif
2537#if EV_USE_EPOLL 2960#if EV_USE_EPOLL
2538# include "ev_epoll.c" 2961# include "ev_epoll.c"
2539#endif 2962#endif
2963#if EV_USE_LINUXAIO
2964# include "ev_linuxaio.c"
2965#endif
2966#if EV_USE_IOURING
2967# include "ev_iouring.c"
2968#endif
2540#if EV_USE_POLL 2969#if EV_USE_POLL
2541# include "ev_poll.c" 2970# include "ev_poll.c"
2542#endif 2971#endif
2543#if EV_USE_SELECT 2972#if EV_USE_SELECT
2544# include "ev_select.c" 2973# include "ev_select.c"
2545#endif 2974#endif
2546 2975
2547int ecb_cold 2976ecb_cold int
2548ev_version_major (void) EV_THROW 2977ev_version_major (void) EV_NOEXCEPT
2549{ 2978{
2550 return EV_VERSION_MAJOR; 2979 return EV_VERSION_MAJOR;
2551} 2980}
2552 2981
2553int ecb_cold 2982ecb_cold int
2554ev_version_minor (void) EV_THROW 2983ev_version_minor (void) EV_NOEXCEPT
2555{ 2984{
2556 return EV_VERSION_MINOR; 2985 return EV_VERSION_MINOR;
2557} 2986}
2558 2987
2559/* return true if we are running with elevated privileges and should ignore env variables */ 2988/* return true if we are running with elevated privileges and should ignore env variables */
2560int inline_size ecb_cold 2989inline_size ecb_cold int
2561enable_secure (void) 2990enable_secure (void)
2562{ 2991{
2563#ifdef _WIN32 2992#ifdef _WIN32
2564 return 0; 2993 return 0;
2565#else 2994#else
2566 return getuid () != geteuid () 2995 return getuid () != geteuid ()
2567 || getgid () != getegid (); 2996 || getgid () != getegid ();
2568#endif 2997#endif
2569} 2998}
2570 2999
2571unsigned int ecb_cold 3000ecb_cold
3001unsigned int
2572ev_supported_backends (void) EV_THROW 3002ev_supported_backends (void) EV_NOEXCEPT
2573{ 3003{
2574 unsigned int flags = 0; 3004 unsigned int flags = 0;
2575 3005
2576 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 3006 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2577 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 3007 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
2578 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 3008 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2579 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 3009 if (EV_USE_LINUXAIO ) flags |= EVBACKEND_LINUXAIO;
2580 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 3010 if (EV_USE_IOURING && ev_linux_version () >= 0x050601) flags |= EVBACKEND_IOURING; /* 5.6.1+ */
2581 3011 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
3012 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
3013
2582 return flags; 3014 return flags;
2583} 3015}
2584 3016
2585unsigned int ecb_cold 3017ecb_cold
3018unsigned int
2586ev_recommended_backends (void) EV_THROW 3019ev_recommended_backends (void) EV_NOEXCEPT
2587{ 3020{
2588 unsigned int flags = ev_supported_backends (); 3021 unsigned int flags = ev_supported_backends ();
2589 3022
2590#ifndef __NetBSD__ 3023#ifndef __NetBSD__
2591 /* kqueue is borked on everything but netbsd apparently */ 3024 /* kqueue is borked on everything but netbsd apparently */
… …
2599#endif 3032#endif
2600#ifdef __FreeBSD__ 3033#ifdef __FreeBSD__
2601 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ 3034 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2602#endif 3035#endif
2603 3036
3037 /* TODO: linuxaio is very experimental */
3038#if !EV_RECOMMEND_LINUXAIO
3039 flags &= ~EVBACKEND_LINUXAIO;
3040#endif
3041 /* TODO: linuxaio is super experimental */
3042#if !EV_RECOMMEND_IOURING
3043 flags &= ~EVBACKEND_IOURING;
3044#endif
3045
2604 return flags; 3046 return flags;
2605} 3047}
2606 3048
2607unsigned int ecb_cold 3049ecb_cold
3050unsigned int
2608ev_embeddable_backends (void) EV_THROW 3051ev_embeddable_backends (void) EV_NOEXCEPT
2609{ 3052{
2610 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 3053 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2611 3054
2612 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 3055 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2613 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 3056 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2614 flags &= ~EVBACKEND_EPOLL; 3057 flags &= ~EVBACKEND_EPOLL;
2615 3058
3059 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
3060
3061 /* EVBACKEND_IOURING is practically embeddable, but the current implementation is not
3062 * because our backend_fd is the epoll fd we need as fallback.
3063 * if the kernel ever is fixed, this might change...
3064 */
3065
2616 return flags; 3066 return flags;
2617} 3067}
2618 3068
2619unsigned int 3069unsigned int
2620ev_backend (EV_P) EV_THROW 3070ev_backend (EV_P) EV_NOEXCEPT
2621{ 3071{
2622 return backend; 3072 return backend;
2623} 3073}
2624 3074
2625#if EV_FEATURE_API 3075#if EV_FEATURE_API
2626unsigned int 3076unsigned int
2627ev_iteration (EV_P) EV_THROW 3077ev_iteration (EV_P) EV_NOEXCEPT
2628{ 3078{
2629 return loop_count; 3079 return loop_count;
2630} 3080}
2631 3081
2632unsigned int 3082unsigned int
2633ev_depth (EV_P) EV_THROW 3083ev_depth (EV_P) EV_NOEXCEPT
2634{ 3084{
2635 return loop_depth; 3085 return loop_depth;
2636} 3086}
2637 3087
2638void 3088void
2639ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW 3089ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2640{ 3090{
2641 io_blocktime = interval; 3091 io_blocktime = interval;
2642} 3092}
2643 3093
2644void 3094void
2645ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW 3095ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2646{ 3096{
2647 timeout_blocktime = interval; 3097 timeout_blocktime = interval;
2648} 3098}
2649 3099
2650void 3100void
2651ev_set_userdata (EV_P_ void *data) EV_THROW 3101ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2652{ 3102{
2653 userdata = data; 3103 userdata = data;
2654} 3104}
2655 3105
2656void * 3106void *
2657ev_userdata (EV_P) EV_THROW 3107ev_userdata (EV_P) EV_NOEXCEPT
2658{ 3108{
2659 return userdata; 3109 return userdata;
2660} 3110}
2661 3111
2662void 3112void
2663ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW 3113ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
2664{ 3114{
2665 invoke_cb = invoke_pending_cb; 3115 invoke_cb = invoke_pending_cb;
2666} 3116}
2667 3117
2668void 3118void
2669ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW 3119ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
2670{ 3120{
2671 release_cb = release; 3121 release_cb = release;
2672 acquire_cb = acquire; 3122 acquire_cb = acquire;
2673} 3123}
2674#endif 3124#endif
2675 3125
2676/* initialise a loop structure, must be zero-initialised */ 3126/* initialise a loop structure, must be zero-initialised */
2677static void noinline ecb_cold 3127ecb_noinline ecb_cold
3128static void
2678loop_init (EV_P_ unsigned int flags) EV_THROW 3129loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
2679{ 3130{
2680 if (!backend) 3131 if (!backend)
2681 { 3132 {
2682 origflags = flags; 3133 origflags = flags;
2683 3134
… …
2736 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3187 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2737#endif 3188#endif
2738#if EV_USE_SIGNALFD 3189#if EV_USE_SIGNALFD
2739 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 3190 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2740#endif 3191#endif
3192#if EV_USE_TIMERFD
3193 timerfd = flags & EVFLAG_NOTIMERFD ? -1 : -2;
3194#endif
2741 3195
2742 if (!(flags & EVBACKEND_MASK)) 3196 if (!(flags & EVBACKEND_MASK))
2743 flags |= ev_recommended_backends (); 3197 flags |= ev_recommended_backends ();
2744 3198
2745#if EV_USE_IOCP 3199#if EV_USE_IOCP
2746 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 3200 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2747#endif 3201#endif
2748#if EV_USE_PORT 3202#if EV_USE_PORT
2749 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3203 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
2750#endif 3204#endif
2751#if EV_USE_KQUEUE 3205#if EV_USE_KQUEUE
2752 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 3206 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
3207#endif
3208#if EV_USE_IOURING
3209 if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
3210#endif
3211#if EV_USE_LINUXAIO
3212 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
2753#endif 3213#endif
2754#if EV_USE_EPOLL 3214#if EV_USE_EPOLL
2755 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3215 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
2756#endif 3216#endif
2757#if EV_USE_POLL 3217#if EV_USE_POLL
2758 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3218 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
2759#endif 3219#endif
2760#if EV_USE_SELECT 3220#if EV_USE_SELECT
2761 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3221 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
2762#endif 3222#endif
2763 3223
2764 ev_prepare_init (&pending_w, pendingcb); 3224 ev_prepare_init (&pending_w, pendingcb);
2765 3225
2766#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3226#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
2769#endif 3229#endif
2770 } 3230 }
2771} 3231}
2772 3232
2773/* free up a loop structure */ 3233/* free up a loop structure */
2774void ecb_cold 3234ecb_cold
3235void
2775ev_loop_destroy (EV_P) 3236ev_loop_destroy (EV_P)
2776{ 3237{
2777 int i; 3238 int i;
2778 3239
2779#if EV_MULTIPLICITY 3240#if EV_MULTIPLICITY
… …
2782 return; 3243 return;
2783#endif 3244#endif
2784 3245
2785#if EV_CLEANUP_ENABLE 3246#if EV_CLEANUP_ENABLE
2786 /* queue cleanup watchers (and execute them) */ 3247 /* queue cleanup watchers (and execute them) */
2787 if (expect_false (cleanupcnt)) 3248 if (ecb_expect_false (cleanupcnt))
2788 { 3249 {
2789 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); 3250 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2790 EV_INVOKE_PENDING; 3251 EV_INVOKE_PENDING;
2791 } 3252 }
2792#endif 3253#endif
… …
2811#if EV_USE_SIGNALFD 3272#if EV_USE_SIGNALFD
2812 if (ev_is_active (&sigfd_w)) 3273 if (ev_is_active (&sigfd_w))
2813 close (sigfd); 3274 close (sigfd);
2814#endif 3275#endif
2815 3276
3277#if EV_USE_TIMERFD
3278 if (ev_is_active (&timerfd_w))
3279 close (timerfd);
3280#endif
3281
2816#if EV_USE_INOTIFY 3282#if EV_USE_INOTIFY
2817 if (fs_fd >= 0) 3283 if (fs_fd >= 0)
2818 close (fs_fd); 3284 close (fs_fd);
2819#endif 3285#endif
2820 3286
2821 if (backend_fd >= 0) 3287 if (backend_fd >= 0)
2822 close (backend_fd); 3288 close (backend_fd);
2823 3289
2824#if EV_USE_IOCP 3290#if EV_USE_IOCP
2825 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3291 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2826#endif 3292#endif
2827#if EV_USE_PORT 3293#if EV_USE_PORT
2828 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3294 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
2829#endif 3295#endif
2830#if EV_USE_KQUEUE 3296#if EV_USE_KQUEUE
2831 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3297 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3298#endif
3299#if EV_USE_IOURING
3300 if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
3301#endif
3302#if EV_USE_LINUXAIO
3303 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
2832#endif 3304#endif
2833#if EV_USE_EPOLL 3305#if EV_USE_EPOLL
2834 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3306 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
2835#endif 3307#endif
2836#if EV_USE_POLL 3308#if EV_USE_POLL
2837 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3309 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
2838#endif 3310#endif
2839#if EV_USE_SELECT 3311#if EV_USE_SELECT
2840 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3312 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
2841#endif 3313#endif
2842 3314
2843 for (i = NUMPRI; i--; ) 3315 for (i = NUMPRI; i--; )
2844 { 3316 {
2845 array_free (pending, [i]); 3317 array_free (pending, [i]);
… …
2887 3359
2888inline_size void 3360inline_size void
2889loop_fork (EV_P) 3361loop_fork (EV_P)
2890{ 3362{
2891#if EV_USE_PORT 3363#if EV_USE_PORT
2892 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3364 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
2893#endif 3365#endif
2894#if EV_USE_KQUEUE 3366#if EV_USE_KQUEUE
2895 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3367 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3368#endif
3369#if EV_USE_IOURING
3370 if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
3371#endif
3372#if EV_USE_LINUXAIO
3373 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
2896#endif 3374#endif
2897#if EV_USE_EPOLL 3375#if EV_USE_EPOLL
2898 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3376 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
2899#endif 3377#endif
2900#if EV_USE_INOTIFY 3378#if EV_USE_INOTIFY
2901 infy_fork (EV_A); 3379 infy_fork (EV_A);
2902#endif 3380#endif
2903 3381
3382 if (postfork != 2)
3383 {
3384 #if EV_USE_SIGNALFD
3385 /* surprisingly, nothing needs to be done for signalfd, accoridng to docs, it does the right thing on fork */
3386 #endif
3387
3388 #if EV_USE_TIMERFD
3389 if (ev_is_active (&timerfd_w))
3390 {
3391 ev_ref (EV_A);
3392 ev_io_stop (EV_A_ &timerfd_w);
3393
3394 close (timerfd);
3395 timerfd = -2;
3396
3397 evtimerfd_init (EV_A);
3398 /* reschedule periodics, in case we missed something */
3399 ev_feed_event (EV_A_ &timerfd_w, EV_CUSTOM);
3400 }
3401 #endif
3402
2904#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3403 #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2905 if (ev_is_active (&pipe_w)) 3404 if (ev_is_active (&pipe_w))
2906 { 3405 {
2907 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 3406 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2908 3407
2909 ev_ref (EV_A); 3408 ev_ref (EV_A);
2910 ev_io_stop (EV_A_ &pipe_w); 3409 ev_io_stop (EV_A_ &pipe_w);
2911 3410
2912 if (evpipe [0] >= 0) 3411 if (evpipe [0] >= 0)
2913 EV_WIN32_CLOSE_FD (evpipe [0]); 3412 EV_WIN32_CLOSE_FD (evpipe [0]);
2914 3413
2915 evpipe_init (EV_A); 3414 evpipe_init (EV_A);
2916 /* iterate over everything, in case we missed something before */ 3415 /* iterate over everything, in case we missed something before */
2917 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3416 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3417 }
3418 #endif
2918 } 3419 }
2919#endif
2920 3420
2921 postfork = 0; 3421 postfork = 0;
2922} 3422}
2923 3423
2924#if EV_MULTIPLICITY 3424#if EV_MULTIPLICITY
2925 3425
3426ecb_cold
2926struct ev_loop * ecb_cold 3427struct ev_loop *
2927ev_loop_new (unsigned int flags) EV_THROW 3428ev_loop_new (unsigned int flags) EV_NOEXCEPT
2928{ 3429{
2929 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3430 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2930 3431
2931 memset (EV_A, 0, sizeof (struct ev_loop)); 3432 memset (EV_A, 0, sizeof (struct ev_loop));
2932 loop_init (EV_A_ flags); 3433 loop_init (EV_A_ flags);
… …
2939} 3440}
2940 3441
2941#endif /* multiplicity */ 3442#endif /* multiplicity */
2942 3443
2943#if EV_VERIFY 3444#if EV_VERIFY
2944static void noinline ecb_cold 3445ecb_noinline ecb_cold
3446static void
2945verify_watcher (EV_P_ W w) 3447verify_watcher (EV_P_ W w)
2946{ 3448{
2947 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3449 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2948 3450
2949 if (w->pending) 3451 if (w->pending)
2950 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3452 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2951} 3453}
2952 3454
2953static void noinline ecb_cold 3455ecb_noinline ecb_cold
3456static void
2954verify_heap (EV_P_ ANHE *heap, int N) 3457verify_heap (EV_P_ ANHE *heap, int N)
2955{ 3458{
2956 int i; 3459 int i;
2957 3460
2958 for (i = HEAP0; i < N + HEAP0; ++i) 3461 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2963 3466
2964 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3467 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2965 } 3468 }
2966} 3469}
2967 3470
2968static void noinline ecb_cold 3471ecb_noinline ecb_cold
3472static void
2969array_verify (EV_P_ W *ws, int cnt) 3473array_verify (EV_P_ W *ws, int cnt)
2970{ 3474{
2971 while (cnt--) 3475 while (cnt--)
2972 { 3476 {
2973 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3477 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2976} 3480}
2977#endif 3481#endif
2978 3482
2979#if EV_FEATURE_API 3483#if EV_FEATURE_API
2980void ecb_cold 3484void ecb_cold
2981ev_verify (EV_P) EV_THROW 3485ev_verify (EV_P) EV_NOEXCEPT
2982{ 3486{
2983#if EV_VERIFY 3487#if EV_VERIFY
2984 int i; 3488 int i;
2985 WL w, w2; 3489 WL w, w2;
2986 3490
… …
3062#endif 3566#endif
3063} 3567}
3064#endif 3568#endif
3065 3569
3066#if EV_MULTIPLICITY 3570#if EV_MULTIPLICITY
3571ecb_cold
3067struct ev_loop * ecb_cold 3572struct ev_loop *
3068#else 3573#else
3069int 3574int
3070#endif 3575#endif
3071ev_default_loop (unsigned int flags) EV_THROW 3576ev_default_loop (unsigned int flags) EV_NOEXCEPT
3072{ 3577{
3073 if (!ev_default_loop_ptr) 3578 if (!ev_default_loop_ptr)
3074 { 3579 {
3075#if EV_MULTIPLICITY 3580#if EV_MULTIPLICITY
3076 EV_P = ev_default_loop_ptr = &default_loop_struct; 3581 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
3095 3600
3096 return ev_default_loop_ptr; 3601 return ev_default_loop_ptr;
3097} 3602}
3098 3603
3099void 3604void
3100ev_loop_fork (EV_P) EV_THROW 3605ev_loop_fork (EV_P) EV_NOEXCEPT
3101{ 3606{
3102 postfork = 1; 3607 postfork = 1;
3103} 3608}
3104 3609
3105/*****************************************************************************/ 3610/*****************************************************************************/
… …
3109{ 3614{
3110 EV_CB_INVOKE ((W)w, revents); 3615 EV_CB_INVOKE ((W)w, revents);
3111} 3616}
3112 3617
3113unsigned int 3618unsigned int
3114ev_pending_count (EV_P) EV_THROW 3619ev_pending_count (EV_P) EV_NOEXCEPT
3115{ 3620{
3116 int pri; 3621 int pri;
3117 unsigned int count = 0; 3622 unsigned int count = 0;
3118 3623
3119 for (pri = NUMPRI; pri--; ) 3624 for (pri = NUMPRI; pri--; )
3120 count += pendingcnt [pri]; 3625 count += pendingcnt [pri];
3121 3626
3122 return count; 3627 return count;
3123} 3628}
3124 3629
3125void noinline 3630ecb_noinline
3631void
3126ev_invoke_pending (EV_P) 3632ev_invoke_pending (EV_P)
3127{ 3633{
3128 pendingpri = NUMPRI; 3634 pendingpri = NUMPRI;
3129 3635
3130 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */ 3636 do
3131 { 3637 {
3132 --pendingpri; 3638 --pendingpri;
3133 3639
3640 /* pendingpri possibly gets modified in the inner loop */
3134 while (pendingcnt [pendingpri]) 3641 while (pendingcnt [pendingpri])
3135 { 3642 {
3136 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri]; 3643 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
3137 3644
3138 p->w->pending = 0; 3645 p->w->pending = 0;
3139 EV_CB_INVOKE (p->w, p->events); 3646 EV_CB_INVOKE (p->w, p->events);
3140 EV_FREQUENT_CHECK; 3647 EV_FREQUENT_CHECK;
3141 } 3648 }
3142 } 3649 }
3650 while (pendingpri);
3143} 3651}
3144 3652
3145#if EV_IDLE_ENABLE 3653#if EV_IDLE_ENABLE
3146/* make idle watchers pending. this handles the "call-idle */ 3654/* make idle watchers pending. this handles the "call-idle */
3147/* only when higher priorities are idle" logic */ 3655/* only when higher priorities are idle" logic */
3148inline_size void 3656inline_size void
3149idle_reify (EV_P) 3657idle_reify (EV_P)
3150{ 3658{
3151 if (expect_false (idleall)) 3659 if (ecb_expect_false (idleall))
3152 { 3660 {
3153 int pri; 3661 int pri;
3154 3662
3155 for (pri = NUMPRI; pri--; ) 3663 for (pri = NUMPRI; pri--; )
3156 { 3664 {
… …
3186 { 3694 {
3187 ev_at (w) += w->repeat; 3695 ev_at (w) += w->repeat;
3188 if (ev_at (w) < mn_now) 3696 if (ev_at (w) < mn_now)
3189 ev_at (w) = mn_now; 3697 ev_at (w) = mn_now;
3190 3698
3191 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 3699 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > EV_TS_CONST (0.)));
3192 3700
3193 ANHE_at_cache (timers [HEAP0]); 3701 ANHE_at_cache (timers [HEAP0]);
3194 downheap (timers, timercnt, HEAP0); 3702 downheap (timers, timercnt, HEAP0);
3195 } 3703 }
3196 else 3704 else
… …
3205 } 3713 }
3206} 3714}
3207 3715
3208#if EV_PERIODIC_ENABLE 3716#if EV_PERIODIC_ENABLE
3209 3717
3210static void noinline 3718ecb_noinline
3719static void
3211periodic_recalc (EV_P_ ev_periodic *w) 3720periodic_recalc (EV_P_ ev_periodic *w)
3212{ 3721{
3213 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3722 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3214 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); 3723 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3215 3724
… …
3217 while (at <= ev_rt_now) 3726 while (at <= ev_rt_now)
3218 { 3727 {
3219 ev_tstamp nat = at + w->interval; 3728 ev_tstamp nat = at + w->interval;
3220 3729
3221 /* when resolution fails us, we use ev_rt_now */ 3730 /* when resolution fails us, we use ev_rt_now */
3222 if (expect_false (nat == at)) 3731 if (ecb_expect_false (nat == at))
3223 { 3732 {
3224 at = ev_rt_now; 3733 at = ev_rt_now;
3225 break; 3734 break;
3226 } 3735 }
3227 3736
… …
3273 } 3782 }
3274} 3783}
3275 3784
3276/* simply recalculate all periodics */ 3785/* simply recalculate all periodics */
3277/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3786/* TODO: maybe ensure that at least one event happens when jumping forward? */
3278static void noinline ecb_cold 3787ecb_noinline ecb_cold
3788static void
3279periodics_reschedule (EV_P) 3789periodics_reschedule (EV_P)
3280{ 3790{
3281 int i; 3791 int i;
3282 3792
3283 /* adjust periodics after time jump */ 3793 /* adjust periodics after time jump */
… …
3296 reheap (periodics, periodiccnt); 3806 reheap (periodics, periodiccnt);
3297} 3807}
3298#endif 3808#endif
3299 3809
3300/* adjust all timers by a given offset */ 3810/* adjust all timers by a given offset */
3301static void noinline ecb_cold 3811ecb_noinline ecb_cold
3812static void
3302timers_reschedule (EV_P_ ev_tstamp adjust) 3813timers_reschedule (EV_P_ ev_tstamp adjust)
3303{ 3814{
3304 int i; 3815 int i;
3305 3816
3306 for (i = 0; i < timercnt; ++i) 3817 for (i = 0; i < timercnt; ++i)
… …
3315/* also detect if there was a timejump, and act accordingly */ 3826/* also detect if there was a timejump, and act accordingly */
3316inline_speed void 3827inline_speed void
3317time_update (EV_P_ ev_tstamp max_block) 3828time_update (EV_P_ ev_tstamp max_block)
3318{ 3829{
3319#if EV_USE_MONOTONIC 3830#if EV_USE_MONOTONIC
3320 if (expect_true (have_monotonic)) 3831 if (ecb_expect_true (have_monotonic))
3321 { 3832 {
3322 int i; 3833 int i;
3323 ev_tstamp odiff = rtmn_diff; 3834 ev_tstamp odiff = rtmn_diff;
3324 3835
3325 mn_now = get_clock (); 3836 mn_now = get_clock ();
3326 3837
3327 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3838 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
3328 /* interpolate in the meantime */ 3839 /* interpolate in the meantime */
3329 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3840 if (ecb_expect_true (mn_now - now_floor < EV_TS_CONST (MIN_TIMEJUMP * .5)))
3330 { 3841 {
3331 ev_rt_now = rtmn_diff + mn_now; 3842 ev_rt_now = rtmn_diff + mn_now;
3332 return; 3843 return;
3333 } 3844 }
3334 3845
… …
3348 ev_tstamp diff; 3859 ev_tstamp diff;
3349 rtmn_diff = ev_rt_now - mn_now; 3860 rtmn_diff = ev_rt_now - mn_now;
3350 3861
3351 diff = odiff - rtmn_diff; 3862 diff = odiff - rtmn_diff;
3352 3863
3353 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP)) 3864 if (ecb_expect_true ((diff < EV_TS_CONST (0.) ? -diff : diff) < EV_TS_CONST (MIN_TIMEJUMP)))
3354 return; /* all is well */ 3865 return; /* all is well */
3355 3866
3356 ev_rt_now = ev_time (); 3867 ev_rt_now = ev_time ();
3357 mn_now = get_clock (); 3868 mn_now = get_clock ();
3358 now_floor = mn_now; 3869 now_floor = mn_now;
… …
3367 else 3878 else
3368#endif 3879#endif
3369 { 3880 {
3370 ev_rt_now = ev_time (); 3881 ev_rt_now = ev_time ();
3371 3882
3372 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 3883 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + EV_TS_CONST (MIN_TIMEJUMP)))
3373 { 3884 {
3374 /* adjust timers. this is easy, as the offset is the same for all of them */ 3885 /* adjust timers. this is easy, as the offset is the same for all of them */
3375 timers_reschedule (EV_A_ ev_rt_now - mn_now); 3886 timers_reschedule (EV_A_ ev_rt_now - mn_now);
3376#if EV_PERIODIC_ENABLE 3887#if EV_PERIODIC_ENABLE
3377 periodics_reschedule (EV_A); 3888 periodics_reschedule (EV_A);
… …
3400#if EV_VERIFY >= 2 3911#if EV_VERIFY >= 2
3401 ev_verify (EV_A); 3912 ev_verify (EV_A);
3402#endif 3913#endif
3403 3914
3404#ifndef _WIN32 3915#ifndef _WIN32
3405 if (expect_false (curpid)) /* penalise the forking check even more */ 3916 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
3406 if (expect_false (getpid () != curpid)) 3917 if (ecb_expect_false (getpid () != curpid))
3407 { 3918 {
3408 curpid = getpid (); 3919 curpid = getpid ();
3409 postfork = 1; 3920 postfork = 1;
3410 } 3921 }
3411#endif 3922#endif
3412 3923
3413#if EV_FORK_ENABLE 3924#if EV_FORK_ENABLE
3414 /* we might have forked, so queue fork handlers */ 3925 /* we might have forked, so queue fork handlers */
3415 if (expect_false (postfork)) 3926 if (ecb_expect_false (postfork))
3416 if (forkcnt) 3927 if (forkcnt)
3417 { 3928 {
3418 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3929 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
3419 EV_INVOKE_PENDING; 3930 EV_INVOKE_PENDING;
3420 } 3931 }
3421#endif 3932#endif
3422 3933
3423#if EV_PREPARE_ENABLE 3934#if EV_PREPARE_ENABLE
3424 /* queue prepare watchers (and execute them) */ 3935 /* queue prepare watchers (and execute them) */
3425 if (expect_false (preparecnt)) 3936 if (ecb_expect_false (preparecnt))
3426 { 3937 {
3427 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3938 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
3428 EV_INVOKE_PENDING; 3939 EV_INVOKE_PENDING;
3429 } 3940 }
3430#endif 3941#endif
3431 3942
3432 if (expect_false (loop_done)) 3943 if (ecb_expect_false (loop_done))
3433 break; 3944 break;
3434 3945
3435 /* we might have forked, so reify kernel state if necessary */ 3946 /* we might have forked, so reify kernel state if necessary */
3436 if (expect_false (postfork)) 3947 if (ecb_expect_false (postfork))
3437 loop_fork (EV_A); 3948 loop_fork (EV_A);
3438 3949
3439 /* update fd-related kernel structures */ 3950 /* update fd-related kernel structures */
3440 fd_reify (EV_A); 3951 fd_reify (EV_A);
3441 3952
… …
3446 3957
3447 /* remember old timestamp for io_blocktime calculation */ 3958 /* remember old timestamp for io_blocktime calculation */
3448 ev_tstamp prev_mn_now = mn_now; 3959 ev_tstamp prev_mn_now = mn_now;
3449 3960
3450 /* update time to cancel out callback processing overhead */ 3961 /* update time to cancel out callback processing overhead */
3451 time_update (EV_A_ 1e100); 3962 time_update (EV_A_ EV_TS_CONST (EV_TSTAMP_HUGE));
3452 3963
3453 /* from now on, we want a pipe-wake-up */ 3964 /* from now on, we want a pipe-wake-up */
3454 pipe_write_wanted = 1; 3965 pipe_write_wanted = 1;
3455 3966
3456 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */ 3967 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3457 3968
3458 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) 3969 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
3459 { 3970 {
3460 waittime = MAX_BLOCKTIME; 3971 waittime = EV_TS_CONST (MAX_BLOCKTIME);
3461 3972
3462 if (timercnt) 3973 if (timercnt)
3463 { 3974 {
3464 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now; 3975 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
3465 if (waittime > to) waittime = to; 3976 if (waittime > to) waittime = to;
… …
3472 if (waittime > to) waittime = to; 3983 if (waittime > to) waittime = to;
3473 } 3984 }
3474#endif 3985#endif
3475 3986
3476 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3987 /* don't let timeouts decrease the waittime below timeout_blocktime */
3477 if (expect_false (waittime < timeout_blocktime)) 3988 if (ecb_expect_false (waittime < timeout_blocktime))
3478 waittime = timeout_blocktime; 3989 waittime = timeout_blocktime;
3479 3990
3480 /* at this point, we NEED to wait, so we have to ensure */ 3991 /* now there are two more special cases left, either we have
3481 /* to pass a minimum nonzero value to the backend */ 3992 * already-expired timers, so we should not sleep, or we have timers
3993 * that expire very soon, in which case we need to wait for a minimum
3994 * amount of time for some event loop backends.
3995 */
3482 if (expect_false (waittime < backend_mintime)) 3996 if (ecb_expect_false (waittime < backend_mintime))
3997 waittime = waittime <= EV_TS_CONST (0.)
3998 ? EV_TS_CONST (0.)
3483 waittime = backend_mintime; 3999 : backend_mintime;
3484 4000
3485 /* extra check because io_blocktime is commonly 0 */ 4001 /* extra check because io_blocktime is commonly 0 */
3486 if (expect_false (io_blocktime)) 4002 if (ecb_expect_false (io_blocktime))
3487 { 4003 {
3488 sleeptime = io_blocktime - (mn_now - prev_mn_now); 4004 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3489 4005
3490 if (sleeptime > waittime - backend_mintime) 4006 if (sleeptime > waittime - backend_mintime)
3491 sleeptime = waittime - backend_mintime; 4007 sleeptime = waittime - backend_mintime;
3492 4008
3493 if (expect_true (sleeptime > 0.)) 4009 if (ecb_expect_true (sleeptime > EV_TS_CONST (0.)))
3494 { 4010 {
3495 ev_sleep (sleeptime); 4011 ev_sleep (sleeptime);
3496 waittime -= sleeptime; 4012 waittime -= sleeptime;
3497 } 4013 }
3498 } 4014 }
… …
3512 { 4028 {
3513 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 4029 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3514 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 4030 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3515 } 4031 }
3516 4032
3517
3518 /* update ev_rt_now, do magic */ 4033 /* update ev_rt_now, do magic */
3519 time_update (EV_A_ waittime + sleeptime); 4034 time_update (EV_A_ waittime + sleeptime);
3520 } 4035 }
3521 4036
3522 /* queue pending timers and reschedule them */ 4037 /* queue pending timers and reschedule them */
… …
3530 idle_reify (EV_A); 4045 idle_reify (EV_A);
3531#endif 4046#endif
3532 4047
3533#if EV_CHECK_ENABLE 4048#if EV_CHECK_ENABLE
3534 /* queue check watchers, to be executed first */ 4049 /* queue check watchers, to be executed first */
3535 if (expect_false (checkcnt)) 4050 if (ecb_expect_false (checkcnt))
3536 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 4051 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3537#endif 4052#endif
3538 4053
3539 EV_INVOKE_PENDING; 4054 EV_INVOKE_PENDING;
3540 } 4055 }
3541 while (expect_true ( 4056 while (ecb_expect_true (
3542 activecnt 4057 activecnt
3543 && !loop_done 4058 && !loop_done
3544 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) 4059 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
3545 )); 4060 ));
3546 4061
… …
3553 4068
3554 return activecnt; 4069 return activecnt;
3555} 4070}
3556 4071
3557void 4072void
3558ev_break (EV_P_ int how) EV_THROW 4073ev_break (EV_P_ int how) EV_NOEXCEPT
3559{ 4074{
3560 loop_done = how; 4075 loop_done = how;
3561} 4076}
3562 4077
3563void 4078void
3564ev_ref (EV_P) EV_THROW 4079ev_ref (EV_P) EV_NOEXCEPT
3565{ 4080{
3566 ++activecnt; 4081 ++activecnt;
3567} 4082}
3568 4083
3569void 4084void
3570ev_unref (EV_P) EV_THROW 4085ev_unref (EV_P) EV_NOEXCEPT
3571{ 4086{
3572 --activecnt; 4087 --activecnt;
3573} 4088}
3574 4089
3575void 4090void
3576ev_now_update (EV_P) EV_THROW 4091ev_now_update (EV_P) EV_NOEXCEPT
3577{ 4092{
3578 time_update (EV_A_ 1e100); 4093 time_update (EV_A_ EV_TSTAMP_HUGE);
3579} 4094}
3580 4095
3581void 4096void
3582ev_suspend (EV_P) EV_THROW 4097ev_suspend (EV_P) EV_NOEXCEPT
3583{ 4098{
3584 ev_now_update (EV_A); 4099 ev_now_update (EV_A);
3585} 4100}
3586 4101
3587void 4102void
3588ev_resume (EV_P) EV_THROW 4103ev_resume (EV_P) EV_NOEXCEPT
3589{ 4104{
3590 ev_tstamp mn_prev = mn_now; 4105 ev_tstamp mn_prev = mn_now;
3591 4106
3592 ev_now_update (EV_A); 4107 ev_now_update (EV_A);
3593 timers_reschedule (EV_A_ mn_now - mn_prev); 4108 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
3610inline_size void 4125inline_size void
3611wlist_del (WL *head, WL elem) 4126wlist_del (WL *head, WL elem)
3612{ 4127{
3613 while (*head) 4128 while (*head)
3614 { 4129 {
3615 if (expect_true (*head == elem)) 4130 if (ecb_expect_true (*head == elem))
3616 { 4131 {
3617 *head = elem->next; 4132 *head = elem->next;
3618 break; 4133 break;
3619 } 4134 }
3620 4135
… …
3632 w->pending = 0; 4147 w->pending = 0;
3633 } 4148 }
3634} 4149}
3635 4150
3636int 4151int
3637ev_clear_pending (EV_P_ void *w) EV_THROW 4152ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
3638{ 4153{
3639 W w_ = (W)w; 4154 W w_ = (W)w;
3640 int pending = w_->pending; 4155 int pending = w_->pending;
3641 4156
3642 if (expect_true (pending)) 4157 if (ecb_expect_true (pending))
3643 { 4158 {
3644 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4159 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3645 p->w = (W)&pending_w; 4160 p->w = (W)&pending_w;
3646 w_->pending = 0; 4161 w_->pending = 0;
3647 return p->events; 4162 return p->events;
… …
3674 w->active = 0; 4189 w->active = 0;
3675} 4190}
3676 4191
3677/*****************************************************************************/ 4192/*****************************************************************************/
3678 4193
3679void noinline 4194ecb_noinline
4195void
3680ev_io_start (EV_P_ ev_io *w) EV_THROW 4196ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
3681{ 4197{
3682 int fd = w->fd; 4198 int fd = w->fd;
3683 4199
3684 if (expect_false (ev_is_active (w))) 4200 if (ecb_expect_false (ev_is_active (w)))
3685 return; 4201 return;
3686 4202
3687 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4203 assert (("libev: ev_io_start called with negative fd", fd >= 0));
3688 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 4204 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
3689 4205
4206#if EV_VERIFY >= 2
4207 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4208#endif
3690 EV_FREQUENT_CHECK; 4209 EV_FREQUENT_CHECK;
3691 4210
3692 ev_start (EV_A_ (W)w, 1); 4211 ev_start (EV_A_ (W)w, 1);
3693 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4212 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
3694 wlist_add (&anfds[fd].head, (WL)w); 4213 wlist_add (&anfds[fd].head, (WL)w);
3695 4214
3696 /* common bug, apparently */ 4215 /* common bug, apparently */
3697 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w)); 4216 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3698 4217
… …
3700 w->events &= ~EV__IOFDSET; 4219 w->events &= ~EV__IOFDSET;
3701 4220
3702 EV_FREQUENT_CHECK; 4221 EV_FREQUENT_CHECK;
3703} 4222}
3704 4223
3705void noinline 4224ecb_noinline
4225void
3706ev_io_stop (EV_P_ ev_io *w) EV_THROW 4226ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
3707{ 4227{
3708 clear_pending (EV_A_ (W)w); 4228 clear_pending (EV_A_ (W)w);
3709 if (expect_false (!ev_is_active (w))) 4229 if (ecb_expect_false (!ev_is_active (w)))
3710 return; 4230 return;
3711 4231
3712 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4232 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
3713 4233
4234#if EV_VERIFY >= 2
4235 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4236#endif
3714 EV_FREQUENT_CHECK; 4237 EV_FREQUENT_CHECK;
3715 4238
3716 wlist_del (&anfds[w->fd].head, (WL)w); 4239 wlist_del (&anfds[w->fd].head, (WL)w);
3717 ev_stop (EV_A_ (W)w); 4240 ev_stop (EV_A_ (W)w);
3718 4241
3719 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 4242 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3720 4243
3721 EV_FREQUENT_CHECK; 4244 EV_FREQUENT_CHECK;
3722} 4245}
3723 4246
3724void noinline 4247ecb_noinline
4248void
3725ev_timer_start (EV_P_ ev_timer *w) EV_THROW 4249ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
3726{ 4250{
3727 if (expect_false (ev_is_active (w))) 4251 if (ecb_expect_false (ev_is_active (w)))
3728 return; 4252 return;
3729 4253
3730 ev_at (w) += mn_now; 4254 ev_at (w) += mn_now;
3731 4255
3732 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4256 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
3733 4257
3734 EV_FREQUENT_CHECK; 4258 EV_FREQUENT_CHECK;
3735 4259
3736 ++timercnt; 4260 ++timercnt;
3737 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4261 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
3738 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4262 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
3739 ANHE_w (timers [ev_active (w)]) = (WT)w; 4263 ANHE_w (timers [ev_active (w)]) = (WT)w;
3740 ANHE_at_cache (timers [ev_active (w)]); 4264 ANHE_at_cache (timers [ev_active (w)]);
3741 upheap (timers, ev_active (w)); 4265 upheap (timers, ev_active (w));
3742 4266
3743 EV_FREQUENT_CHECK; 4267 EV_FREQUENT_CHECK;
3744 4268
3745 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4269 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
3746} 4270}
3747 4271
3748void noinline 4272ecb_noinline
4273void
3749ev_timer_stop (EV_P_ ev_timer *w) EV_THROW 4274ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
3750{ 4275{
3751 clear_pending (EV_A_ (W)w); 4276 clear_pending (EV_A_ (W)w);
3752 if (expect_false (!ev_is_active (w))) 4277 if (ecb_expect_false (!ev_is_active (w)))
3753 return; 4278 return;
3754 4279
3755 EV_FREQUENT_CHECK; 4280 EV_FREQUENT_CHECK;
3756 4281
3757 { 4282 {
… …
3759 4284
3760 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4285 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
3761 4286
3762 --timercnt; 4287 --timercnt;
3763 4288
3764 if (expect_true (active < timercnt + HEAP0)) 4289 if (ecb_expect_true (active < timercnt + HEAP0))
3765 { 4290 {
3766 timers [active] = timers [timercnt + HEAP0]; 4291 timers [active] = timers [timercnt + HEAP0];
3767 adjustheap (timers, timercnt, active); 4292 adjustheap (timers, timercnt, active);
3768 } 4293 }
3769 } 4294 }
… …
3773 ev_stop (EV_A_ (W)w); 4298 ev_stop (EV_A_ (W)w);
3774 4299
3775 EV_FREQUENT_CHECK; 4300 EV_FREQUENT_CHECK;
3776} 4301}
3777 4302
3778void noinline 4303ecb_noinline
4304void
3779ev_timer_again (EV_P_ ev_timer *w) EV_THROW 4305ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
3780{ 4306{
3781 EV_FREQUENT_CHECK; 4307 EV_FREQUENT_CHECK;
3782 4308
3783 clear_pending (EV_A_ (W)w); 4309 clear_pending (EV_A_ (W)w);
3784 4310
… …
3801 4327
3802 EV_FREQUENT_CHECK; 4328 EV_FREQUENT_CHECK;
3803} 4329}
3804 4330
3805ev_tstamp 4331ev_tstamp
3806ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW 4332ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
3807{ 4333{
3808 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4334 return ev_at (w) - (ev_is_active (w) ? mn_now : EV_TS_CONST (0.));
3809} 4335}
3810 4336
3811#if EV_PERIODIC_ENABLE 4337#if EV_PERIODIC_ENABLE
3812void noinline 4338ecb_noinline
4339void
3813ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW 4340ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
3814{ 4341{
3815 if (expect_false (ev_is_active (w))) 4342 if (ecb_expect_false (ev_is_active (w)))
3816 return; 4343 return;
4344
4345#if EV_USE_TIMERFD
4346 if (timerfd == -2)
4347 evtimerfd_init (EV_A);
4348#endif
3817 4349
3818 if (w->reschedule_cb) 4350 if (w->reschedule_cb)
3819 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4351 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
3820 else if (w->interval) 4352 else if (w->interval)
3821 { 4353 {
… …
3827 4359
3828 EV_FREQUENT_CHECK; 4360 EV_FREQUENT_CHECK;
3829 4361
3830 ++periodiccnt; 4362 ++periodiccnt;
3831 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4363 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
3832 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4364 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
3833 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4365 ANHE_w (periodics [ev_active (w)]) = (WT)w;
3834 ANHE_at_cache (periodics [ev_active (w)]); 4366 ANHE_at_cache (periodics [ev_active (w)]);
3835 upheap (periodics, ev_active (w)); 4367 upheap (periodics, ev_active (w));
3836 4368
3837 EV_FREQUENT_CHECK; 4369 EV_FREQUENT_CHECK;
3838 4370
3839 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4371 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
3840} 4372}
3841 4373
3842void noinline 4374ecb_noinline
4375void
3843ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW 4376ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
3844{ 4377{
3845 clear_pending (EV_A_ (W)w); 4378 clear_pending (EV_A_ (W)w);
3846 if (expect_false (!ev_is_active (w))) 4379 if (ecb_expect_false (!ev_is_active (w)))
3847 return; 4380 return;
3848 4381
3849 EV_FREQUENT_CHECK; 4382 EV_FREQUENT_CHECK;
3850 4383
3851 { 4384 {
… …
3853 4386
3854 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4387 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
3855 4388
3856 --periodiccnt; 4389 --periodiccnt;
3857 4390
3858 if (expect_true (active < periodiccnt + HEAP0)) 4391 if (ecb_expect_true (active < periodiccnt + HEAP0))
3859 { 4392 {
3860 periodics [active] = periodics [periodiccnt + HEAP0]; 4393 periodics [active] = periodics [periodiccnt + HEAP0];
3861 adjustheap (periodics, periodiccnt, active); 4394 adjustheap (periodics, periodiccnt, active);
3862 } 4395 }
3863 } 4396 }
… …
3865 ev_stop (EV_A_ (W)w); 4398 ev_stop (EV_A_ (W)w);
3866 4399
3867 EV_FREQUENT_CHECK; 4400 EV_FREQUENT_CHECK;
3868} 4401}
3869 4402
3870void noinline 4403ecb_noinline
4404void
3871ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW 4405ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
3872{ 4406{
3873 /* TODO: use adjustheap and recalculation */ 4407 /* TODO: use adjustheap and recalculation */
3874 ev_periodic_stop (EV_A_ w); 4408 ev_periodic_stop (EV_A_ w);
3875 ev_periodic_start (EV_A_ w); 4409 ev_periodic_start (EV_A_ w);
3876} 4410}
… …
3880# define SA_RESTART 0 4414# define SA_RESTART 0
3881#endif 4415#endif
3882 4416
3883#if EV_SIGNAL_ENABLE 4417#if EV_SIGNAL_ENABLE
3884 4418
3885void noinline 4419ecb_noinline
4420void
3886ev_signal_start (EV_P_ ev_signal *w) EV_THROW 4421ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
3887{ 4422{
3888 if (expect_false (ev_is_active (w))) 4423 if (ecb_expect_false (ev_is_active (w)))
3889 return; 4424 return;
3890 4425
3891 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4426 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
3892 4427
3893#if EV_MULTIPLICITY 4428#if EV_MULTIPLICITY
… …
3962 } 4497 }
3963 4498
3964 EV_FREQUENT_CHECK; 4499 EV_FREQUENT_CHECK;
3965} 4500}
3966 4501
3967void noinline 4502ecb_noinline
4503void
3968ev_signal_stop (EV_P_ ev_signal *w) EV_THROW 4504ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
3969{ 4505{
3970 clear_pending (EV_A_ (W)w); 4506 clear_pending (EV_A_ (W)w);
3971 if (expect_false (!ev_is_active (w))) 4507 if (ecb_expect_false (!ev_is_active (w)))
3972 return; 4508 return;
3973 4509
3974 EV_FREQUENT_CHECK; 4510 EV_FREQUENT_CHECK;
3975 4511
3976 wlist_del (&signals [w->signum - 1].head, (WL)w); 4512 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
4004#endif 4540#endif
4005 4541
4006#if EV_CHILD_ENABLE 4542#if EV_CHILD_ENABLE
4007 4543
4008void 4544void
4009ev_child_start (EV_P_ ev_child *w) EV_THROW 4545ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
4010{ 4546{
4011#if EV_MULTIPLICITY 4547#if EV_MULTIPLICITY
4012 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4548 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
4013#endif 4549#endif
4014 if (expect_false (ev_is_active (w))) 4550 if (ecb_expect_false (ev_is_active (w)))
4015 return; 4551 return;
4016 4552
4017 EV_FREQUENT_CHECK; 4553 EV_FREQUENT_CHECK;
4018 4554
4019 ev_start (EV_A_ (W)w, 1); 4555 ev_start (EV_A_ (W)w, 1);
… …
4021 4557
4022 EV_FREQUENT_CHECK; 4558 EV_FREQUENT_CHECK;
4023} 4559}
4024 4560
4025void 4561void
4026ev_child_stop (EV_P_ ev_child *w) EV_THROW 4562ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
4027{ 4563{
4028 clear_pending (EV_A_ (W)w); 4564 clear_pending (EV_A_ (W)w);
4029 if (expect_false (!ev_is_active (w))) 4565 if (ecb_expect_false (!ev_is_active (w)))
4030 return; 4566 return;
4031 4567
4032 EV_FREQUENT_CHECK; 4568 EV_FREQUENT_CHECK;
4033 4569
4034 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); 4570 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
… …
4048 4584
4049#define DEF_STAT_INTERVAL 5.0074891 4585#define DEF_STAT_INTERVAL 5.0074891
4050#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4586#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
4051#define MIN_STAT_INTERVAL 0.1074891 4587#define MIN_STAT_INTERVAL 0.1074891
4052 4588
4053static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4589ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
4054 4590
4055#if EV_USE_INOTIFY 4591#if EV_USE_INOTIFY
4056 4592
4057/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4593/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
4058# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4594# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
4059 4595
4060static void noinline 4596ecb_noinline
4597static void
4061infy_add (EV_P_ ev_stat *w) 4598infy_add (EV_P_ ev_stat *w)
4062{ 4599{
4063 w->wd = inotify_add_watch (fs_fd, w->path, 4600 w->wd = inotify_add_watch (fs_fd, w->path,
4064 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY 4601 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4065 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO 4602 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
… …
4129 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4666 if (ev_is_active (&w->timer)) ev_ref (EV_A);
4130 ev_timer_again (EV_A_ &w->timer); 4667 ev_timer_again (EV_A_ &w->timer);
4131 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4668 if (ev_is_active (&w->timer)) ev_unref (EV_A);
4132} 4669}
4133 4670
4134static void noinline 4671ecb_noinline
4672static void
4135infy_del (EV_P_ ev_stat *w) 4673infy_del (EV_P_ ev_stat *w)
4136{ 4674{
4137 int slot; 4675 int slot;
4138 int wd = w->wd; 4676 int wd = w->wd;
4139 4677
… …
4146 4684
4147 /* remove this watcher, if others are watching it, they will rearm */ 4685 /* remove this watcher, if others are watching it, they will rearm */
4148 inotify_rm_watch (fs_fd, wd); 4686 inotify_rm_watch (fs_fd, wd);
4149} 4687}
4150 4688
4151static void noinline 4689ecb_noinline
4690static void
4152infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4691infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
4153{ 4692{
4154 if (slot < 0) 4693 if (slot < 0)
4155 /* overflow, need to check for all hash slots */ 4694 /* overflow, need to check for all hash slots */
4156 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4695 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
4192 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4731 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4193 ofs += sizeof (struct inotify_event) + ev->len; 4732 ofs += sizeof (struct inotify_event) + ev->len;
4194 } 4733 }
4195} 4734}
4196 4735
4197inline_size void ecb_cold 4736inline_size ecb_cold
4737void
4198ev_check_2625 (EV_P) 4738ev_check_2625 (EV_P)
4199{ 4739{
4200 /* kernels < 2.6.25 are borked 4740 /* kernels < 2.6.25 are borked
4201 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4741 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
4202 */ 4742 */
… …
4292#else 4832#else
4293# define EV_LSTAT(p,b) lstat (p, b) 4833# define EV_LSTAT(p,b) lstat (p, b)
4294#endif 4834#endif
4295 4835
4296void 4836void
4297ev_stat_stat (EV_P_ ev_stat *w) EV_THROW 4837ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
4298{ 4838{
4299 if (lstat (w->path, &w->attr) < 0) 4839 if (lstat (w->path, &w->attr) < 0)
4300 w->attr.st_nlink = 0; 4840 w->attr.st_nlink = 0;
4301 else if (!w->attr.st_nlink) 4841 else if (!w->attr.st_nlink)
4302 w->attr.st_nlink = 1; 4842 w->attr.st_nlink = 1;
4303} 4843}
4304 4844
4305static void noinline 4845ecb_noinline
4846static void
4306stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4847stat_timer_cb (EV_P_ ev_timer *w_, int revents)
4307{ 4848{
4308 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4849 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
4309 4850
4310 ev_statdata prev = w->attr; 4851 ev_statdata prev = w->attr;
… …
4341 ev_feed_event (EV_A_ w, EV_STAT); 4882 ev_feed_event (EV_A_ w, EV_STAT);
4342 } 4883 }
4343} 4884}
4344 4885
4345void 4886void
4346ev_stat_start (EV_P_ ev_stat *w) EV_THROW 4887ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
4347{ 4888{
4348 if (expect_false (ev_is_active (w))) 4889 if (ecb_expect_false (ev_is_active (w)))
4349 return; 4890 return;
4350 4891
4351 ev_stat_stat (EV_A_ w); 4892 ev_stat_stat (EV_A_ w);
4352 4893
4353 if (w->interval < MIN_STAT_INTERVAL && w->interval) 4894 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
4372 4913
4373 EV_FREQUENT_CHECK; 4914 EV_FREQUENT_CHECK;
4374} 4915}
4375 4916
4376void 4917void
4377ev_stat_stop (EV_P_ ev_stat *w) EV_THROW 4918ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
4378{ 4919{
4379 clear_pending (EV_A_ (W)w); 4920 clear_pending (EV_A_ (W)w);
4380 if (expect_false (!ev_is_active (w))) 4921 if (ecb_expect_false (!ev_is_active (w)))
4381 return; 4922 return;
4382 4923
4383 EV_FREQUENT_CHECK; 4924 EV_FREQUENT_CHECK;
4384 4925
4385#if EV_USE_INOTIFY 4926#if EV_USE_INOTIFY
… …
4398} 4939}
4399#endif 4940#endif
4400 4941
4401#if EV_IDLE_ENABLE 4942#if EV_IDLE_ENABLE
4402void 4943void
4403ev_idle_start (EV_P_ ev_idle *w) EV_THROW 4944ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
4404{ 4945{
4405 if (expect_false (ev_is_active (w))) 4946 if (ecb_expect_false (ev_is_active (w)))
4406 return; 4947 return;
4407 4948
4408 pri_adjust (EV_A_ (W)w); 4949 pri_adjust (EV_A_ (W)w);
4409 4950
4410 EV_FREQUENT_CHECK; 4951 EV_FREQUENT_CHECK;
… …
4413 int active = ++idlecnt [ABSPRI (w)]; 4954 int active = ++idlecnt [ABSPRI (w)];
4414 4955
4415 ++idleall; 4956 ++idleall;
4416 ev_start (EV_A_ (W)w, active); 4957 ev_start (EV_A_ (W)w, active);
4417 4958
4418 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4959 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
4419 idles [ABSPRI (w)][active - 1] = w; 4960 idles [ABSPRI (w)][active - 1] = w;
4420 } 4961 }
4421 4962
4422 EV_FREQUENT_CHECK; 4963 EV_FREQUENT_CHECK;
4423} 4964}
4424 4965
4425void 4966void
4426ev_idle_stop (EV_P_ ev_idle *w) EV_THROW 4967ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
4427{ 4968{
4428 clear_pending (EV_A_ (W)w); 4969 clear_pending (EV_A_ (W)w);
4429 if (expect_false (!ev_is_active (w))) 4970 if (ecb_expect_false (!ev_is_active (w)))
4430 return; 4971 return;
4431 4972
4432 EV_FREQUENT_CHECK; 4973 EV_FREQUENT_CHECK;
4433 4974
4434 { 4975 {
… …
4445} 4986}
4446#endif 4987#endif
4447 4988
4448#if EV_PREPARE_ENABLE 4989#if EV_PREPARE_ENABLE
4449void 4990void
4450ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW 4991ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
4451{ 4992{
4452 if (expect_false (ev_is_active (w))) 4993 if (ecb_expect_false (ev_is_active (w)))
4453 return; 4994 return;
4454 4995
4455 EV_FREQUENT_CHECK; 4996 EV_FREQUENT_CHECK;
4456 4997
4457 ev_start (EV_A_ (W)w, ++preparecnt); 4998 ev_start (EV_A_ (W)w, ++preparecnt);
4458 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4999 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
4459 prepares [preparecnt - 1] = w; 5000 prepares [preparecnt - 1] = w;
4460 5001
4461 EV_FREQUENT_CHECK; 5002 EV_FREQUENT_CHECK;
4462} 5003}
4463 5004
4464void 5005void
4465ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW 5006ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
4466{ 5007{
4467 clear_pending (EV_A_ (W)w); 5008 clear_pending (EV_A_ (W)w);
4468 if (expect_false (!ev_is_active (w))) 5009 if (ecb_expect_false (!ev_is_active (w)))
4469 return; 5010 return;
4470 5011
4471 EV_FREQUENT_CHECK; 5012 EV_FREQUENT_CHECK;
4472 5013
4473 { 5014 {
… …
4483} 5024}
4484#endif 5025#endif
4485 5026
4486#if EV_CHECK_ENABLE 5027#if EV_CHECK_ENABLE
4487void 5028void
4488ev_check_start (EV_P_ ev_check *w) EV_THROW 5029ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
4489{ 5030{
4490 if (expect_false (ev_is_active (w))) 5031 if (ecb_expect_false (ev_is_active (w)))
4491 return; 5032 return;
4492 5033
4493 EV_FREQUENT_CHECK; 5034 EV_FREQUENT_CHECK;
4494 5035
4495 ev_start (EV_A_ (W)w, ++checkcnt); 5036 ev_start (EV_A_ (W)w, ++checkcnt);
4496 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 5037 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
4497 checks [checkcnt - 1] = w; 5038 checks [checkcnt - 1] = w;
4498 5039
4499 EV_FREQUENT_CHECK; 5040 EV_FREQUENT_CHECK;
4500} 5041}
4501 5042
4502void 5043void
4503ev_check_stop (EV_P_ ev_check *w) EV_THROW 5044ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
4504{ 5045{
4505 clear_pending (EV_A_ (W)w); 5046 clear_pending (EV_A_ (W)w);
4506 if (expect_false (!ev_is_active (w))) 5047 if (ecb_expect_false (!ev_is_active (w)))
4507 return; 5048 return;
4508 5049
4509 EV_FREQUENT_CHECK; 5050 EV_FREQUENT_CHECK;
4510 5051
4511 { 5052 {
… …
4520 EV_FREQUENT_CHECK; 5061 EV_FREQUENT_CHECK;
4521} 5062}
4522#endif 5063#endif
4523 5064
4524#if EV_EMBED_ENABLE 5065#if EV_EMBED_ENABLE
4525void noinline 5066ecb_noinline
5067void
4526ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW 5068ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
4527{ 5069{
4528 ev_run (w->other, EVRUN_NOWAIT); 5070 ev_run (w->other, EVRUN_NOWAIT);
4529} 5071}
4530 5072
4531static void 5073static void
… …
4553 ev_run (EV_A_ EVRUN_NOWAIT); 5095 ev_run (EV_A_ EVRUN_NOWAIT);
4554 } 5096 }
4555 } 5097 }
4556} 5098}
4557 5099
5100#if EV_FORK_ENABLE
4558static void 5101static void
4559embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 5102embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
4560{ 5103{
4561 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 5104 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
4562 5105
… …
4569 ev_run (EV_A_ EVRUN_NOWAIT); 5112 ev_run (EV_A_ EVRUN_NOWAIT);
4570 } 5113 }
4571 5114
4572 ev_embed_start (EV_A_ w); 5115 ev_embed_start (EV_A_ w);
4573} 5116}
5117#endif
4574 5118
4575#if 0 5119#if 0
4576static void 5120static void
4577embed_idle_cb (EV_P_ ev_idle *idle, int revents) 5121embed_idle_cb (EV_P_ ev_idle *idle, int revents)
4578{ 5122{
4579 ev_idle_stop (EV_A_ idle); 5123 ev_idle_stop (EV_A_ idle);
4580} 5124}
4581#endif 5125#endif
4582 5126
4583void 5127void
4584ev_embed_start (EV_P_ ev_embed *w) EV_THROW 5128ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
4585{ 5129{
4586 if (expect_false (ev_is_active (w))) 5130 if (ecb_expect_false (ev_is_active (w)))
4587 return; 5131 return;
4588 5132
4589 { 5133 {
4590 EV_P = w->other; 5134 EV_P = w->other;
4591 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 5135 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
… …
4599 5143
4600 ev_prepare_init (&w->prepare, embed_prepare_cb); 5144 ev_prepare_init (&w->prepare, embed_prepare_cb);
4601 ev_set_priority (&w->prepare, EV_MINPRI); 5145 ev_set_priority (&w->prepare, EV_MINPRI);
4602 ev_prepare_start (EV_A_ &w->prepare); 5146 ev_prepare_start (EV_A_ &w->prepare);
4603 5147
5148#if EV_FORK_ENABLE
4604 ev_fork_init (&w->fork, embed_fork_cb); 5149 ev_fork_init (&w->fork, embed_fork_cb);
4605 ev_fork_start (EV_A_ &w->fork); 5150 ev_fork_start (EV_A_ &w->fork);
5151#endif
4606 5152
4607 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 5153 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
4608 5154
4609 ev_start (EV_A_ (W)w, 1); 5155 ev_start (EV_A_ (W)w, 1);
4610 5156
4611 EV_FREQUENT_CHECK; 5157 EV_FREQUENT_CHECK;
4612} 5158}
4613 5159
4614void 5160void
4615ev_embed_stop (EV_P_ ev_embed *w) EV_THROW 5161ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
4616{ 5162{
4617 clear_pending (EV_A_ (W)w); 5163 clear_pending (EV_A_ (W)w);
4618 if (expect_false (!ev_is_active (w))) 5164 if (ecb_expect_false (!ev_is_active (w)))
4619 return; 5165 return;
4620 5166
4621 EV_FREQUENT_CHECK; 5167 EV_FREQUENT_CHECK;
4622 5168
4623 ev_io_stop (EV_A_ &w->io); 5169 ev_io_stop (EV_A_ &w->io);
4624 ev_prepare_stop (EV_A_ &w->prepare); 5170 ev_prepare_stop (EV_A_ &w->prepare);
5171#if EV_FORK_ENABLE
4625 ev_fork_stop (EV_A_ &w->fork); 5172 ev_fork_stop (EV_A_ &w->fork);
5173#endif
4626 5174
4627 ev_stop (EV_A_ (W)w); 5175 ev_stop (EV_A_ (W)w);
4628 5176
4629 EV_FREQUENT_CHECK; 5177 EV_FREQUENT_CHECK;
4630} 5178}
4631#endif 5179#endif
4632 5180
4633#if EV_FORK_ENABLE 5181#if EV_FORK_ENABLE
4634void 5182void
4635ev_fork_start (EV_P_ ev_fork *w) EV_THROW 5183ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
4636{ 5184{
4637 if (expect_false (ev_is_active (w))) 5185 if (ecb_expect_false (ev_is_active (w)))
4638 return; 5186 return;
4639 5187
4640 EV_FREQUENT_CHECK; 5188 EV_FREQUENT_CHECK;
4641 5189
4642 ev_start (EV_A_ (W)w, ++forkcnt); 5190 ev_start (EV_A_ (W)w, ++forkcnt);
4643 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5191 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
4644 forks [forkcnt - 1] = w; 5192 forks [forkcnt - 1] = w;
4645 5193
4646 EV_FREQUENT_CHECK; 5194 EV_FREQUENT_CHECK;
4647} 5195}
4648 5196
4649void 5197void
4650ev_fork_stop (EV_P_ ev_fork *w) EV_THROW 5198ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
4651{ 5199{
4652 clear_pending (EV_A_ (W)w); 5200 clear_pending (EV_A_ (W)w);
4653 if (expect_false (!ev_is_active (w))) 5201 if (ecb_expect_false (!ev_is_active (w)))
4654 return; 5202 return;
4655 5203
4656 EV_FREQUENT_CHECK; 5204 EV_FREQUENT_CHECK;
4657 5205
4658 { 5206 {
… …
4668} 5216}
4669#endif 5217#endif
4670 5218
4671#if EV_CLEANUP_ENABLE 5219#if EV_CLEANUP_ENABLE
4672void 5220void
4673ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW 5221ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4674{ 5222{
4675 if (expect_false (ev_is_active (w))) 5223 if (ecb_expect_false (ev_is_active (w)))
4676 return; 5224 return;
4677 5225
4678 EV_FREQUENT_CHECK; 5226 EV_FREQUENT_CHECK;
4679 5227
4680 ev_start (EV_A_ (W)w, ++cleanupcnt); 5228 ev_start (EV_A_ (W)w, ++cleanupcnt);
4681 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 5229 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
4682 cleanups [cleanupcnt - 1] = w; 5230 cleanups [cleanupcnt - 1] = w;
4683 5231
4684 /* cleanup watchers should never keep a refcount on the loop */ 5232 /* cleanup watchers should never keep a refcount on the loop */
4685 ev_unref (EV_A); 5233 ev_unref (EV_A);
4686 EV_FREQUENT_CHECK; 5234 EV_FREQUENT_CHECK;
4687} 5235}
4688 5236
4689void 5237void
4690ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW 5238ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4691{ 5239{
4692 clear_pending (EV_A_ (W)w); 5240 clear_pending (EV_A_ (W)w);
4693 if (expect_false (!ev_is_active (w))) 5241 if (ecb_expect_false (!ev_is_active (w)))
4694 return; 5242 return;
4695 5243
4696 EV_FREQUENT_CHECK; 5244 EV_FREQUENT_CHECK;
4697 ev_ref (EV_A); 5245 ev_ref (EV_A);
4698 5246
… …
4709} 5257}
4710#endif 5258#endif
4711 5259
4712#if EV_ASYNC_ENABLE 5260#if EV_ASYNC_ENABLE
4713void 5261void
4714ev_async_start (EV_P_ ev_async *w) EV_THROW 5262ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4715{ 5263{
4716 if (expect_false (ev_is_active (w))) 5264 if (ecb_expect_false (ev_is_active (w)))
4717 return; 5265 return;
4718 5266
4719 w->sent = 0; 5267 w->sent = 0;
4720 5268
4721 evpipe_init (EV_A); 5269 evpipe_init (EV_A);
4722 5270
4723 EV_FREQUENT_CHECK; 5271 EV_FREQUENT_CHECK;
4724 5272
4725 ev_start (EV_A_ (W)w, ++asynccnt); 5273 ev_start (EV_A_ (W)w, ++asynccnt);
4726 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5274 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
4727 asyncs [asynccnt - 1] = w; 5275 asyncs [asynccnt - 1] = w;
4728 5276
4729 EV_FREQUENT_CHECK; 5277 EV_FREQUENT_CHECK;
4730} 5278}
4731 5279
4732void 5280void
4733ev_async_stop (EV_P_ ev_async *w) EV_THROW 5281ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4734{ 5282{
4735 clear_pending (EV_A_ (W)w); 5283 clear_pending (EV_A_ (W)w);
4736 if (expect_false (!ev_is_active (w))) 5284 if (ecb_expect_false (!ev_is_active (w)))
4737 return; 5285 return;
4738 5286
4739 EV_FREQUENT_CHECK; 5287 EV_FREQUENT_CHECK;
4740 5288
4741 { 5289 {
… …
4749 5297
4750 EV_FREQUENT_CHECK; 5298 EV_FREQUENT_CHECK;
4751} 5299}
4752 5300
4753void 5301void
4754ev_async_send (EV_P_ ev_async *w) EV_THROW 5302ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
4755{ 5303{
4756 w->sent = 1; 5304 w->sent = 1;
4757 evpipe_write (EV_A_ &async_pending); 5305 evpipe_write (EV_A_ &async_pending);
4758} 5306}
4759#endif 5307#endif
… …
4796 5344
4797 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5345 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
4798} 5346}
4799 5347
4800void 5348void
4801ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW 5349ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
4802{ 5350{
4803 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5351 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
4804
4805 if (expect_false (!once))
4806 {
4807 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
4808 return;
4809 }
4810 5352
4811 once->cb = cb; 5353 once->cb = cb;
4812 once->arg = arg; 5354 once->arg = arg;
4813 5355
4814 ev_init (&once->io, once_cb_io); 5356 ev_init (&once->io, once_cb_io);
… …
4827} 5369}
4828 5370
4829/*****************************************************************************/ 5371/*****************************************************************************/
4830 5372
4831#if EV_WALK_ENABLE 5373#if EV_WALK_ENABLE
4832void ecb_cold 5374ecb_cold
5375void
4833ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW 5376ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
4834{ 5377{
4835 int i, j; 5378 int i, j;
4836 ev_watcher_list *wl, *wn; 5379 ev_watcher_list *wl, *wn;
4837 5380
4838 if (types & (EV_IO | EV_EMBED)) 5381 if (types & (EV_IO | EV_EMBED))

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