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Comparing libev/ev.c (file contents):
Revision 1.477 by root, Sun Aug 9 00:13:28 2015 UTC vs.
Revision 1.521 by root, Sat Dec 28 07:47:35 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 }
… …
647/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */ 762/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
648#if __xlC__ && ECB_CPP 763#if __xlC__ && ECB_CPP
649 #include <builtins.h> 764 #include <builtins.h>
650#endif 765#endif
651 766
767#if 1400 <= _MSC_VER
768 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
769#endif
770
652#ifndef ECB_MEMORY_FENCE 771#ifndef ECB_MEMORY_FENCE
653 #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")
654 #if __i386 || __i386__ 774 #if __i386 || __i386__
655 #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")
656 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") 776 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
657 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 777 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
658 #elif ECB_GCC_AMD64 778 #elif ECB_GCC_AMD64
659 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 779 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
660 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") 780 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
661 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 781 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
662 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 782 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
663 #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 */
664 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \ 791 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
665 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ 792 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
793 || defined __ARM_ARCH_6T2__
666 #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")
667 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \ 795 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
668 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__ 796 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
669 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") 797 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
670 #elif __aarch64__ 798 #elif __aarch64__
671 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory") 799 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
672 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8) 800 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
673 #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")
… …
700 #if ECB_GCC_VERSION(4,7) 828 #if ECB_GCC_VERSION(4,7)
701 /* see comment below (stdatomic.h) about the C11 memory model. */ 829 /* see comment below (stdatomic.h) about the C11 memory model. */
702 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST) 830 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
703 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE) 831 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
704 #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)
705 834
706 #elif ECB_CLANG_EXTENSION(c_atomic) 835 #elif ECB_CLANG_EXTENSION(c_atomic)
707 /* see comment below (stdatomic.h) about the C11 memory model. */ 836 /* see comment below (stdatomic.h) about the C11 memory model. */
708 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) 837 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
709 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE) 838 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
710 #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)
711 841
712 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ 842 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
713 #define ECB_MEMORY_FENCE __sync_synchronize () 843 #define ECB_MEMORY_FENCE __sync_synchronize ()
714 #elif _MSC_VER >= 1500 /* VC++ 2008 */ 844 #elif _MSC_VER >= 1500 /* VC++ 2008 */
715 /* 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... */
… …
725 #elif defined _WIN32 855 #elif defined _WIN32
726 #include <WinNT.h> 856 #include <WinNT.h>
727 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ 857 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
728 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 858 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
729 #include <mbarrier.h> 859 #include <mbarrier.h>
730 #define ECB_MEMORY_FENCE __machine_rw_barrier () 860 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
731 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier () 861 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
732 #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 ()
733 #elif __xlC__ 864 #elif __xlC__
734 #define ECB_MEMORY_FENCE __sync () 865 #define ECB_MEMORY_FENCE __sync ()
735 #endif 866 #endif
736#endif 867#endif
737 868
738#ifndef ECB_MEMORY_FENCE 869#ifndef ECB_MEMORY_FENCE
739 #if ECB_C11 && !defined __STDC_NO_ATOMICS__ 870 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
740 /* 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, */
741 /* not just C11 atomics and atomic accesses */ 872 /* not just C11 atomics and atomic accesses */
742 #include <stdatomic.h> 873 #include <stdatomic.h>
743 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
744 /* any fence other than seq_cst, which isn't very efficient for us. */
745 /* Why that is, we don't know - either the C11 memory model is quite useless */
746 /* for most usages, or gcc and clang have a bug */
747 /* I *currently* lean towards the latter, and inefficiently implement */
748 /* all three of ecb's fences as a seq_cst fence */
749 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
750 /* for all __atomic_thread_fence's except seq_cst */
751 #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)
752 #endif 877 #endif
753#endif 878#endif
754 879
755#ifndef ECB_MEMORY_FENCE 880#ifndef ECB_MEMORY_FENCE
756 #if !ECB_AVOID_PTHREADS 881 #if !ECB_AVOID_PTHREADS
… …
774 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 899 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
775#endif 900#endif
776 901
777#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE 902#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
778 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 903 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
904#endif
905
906#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
907 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
779#endif 908#endif
780 909
781/*****************************************************************************/ 910/*****************************************************************************/
782 911
783#if ECB_CPP 912#if ECB_CPP
… …
915#else 1044#else
916 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x); 1045 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
917 ecb_function_ ecb_const int 1046 ecb_function_ ecb_const int
918 ecb_ctz32 (uint32_t x) 1047 ecb_ctz32 (uint32_t x)
919 { 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
920 int r = 0; 1054 int r = 0;
921 1055
922 x &= ~x + 1; /* this isolates the lowest bit */ 1056 x &= ~x + 1; /* this isolates the lowest bit */
923 1057
924#if ECB_branchless_on_i386 1058#if ECB_branchless_on_i386
… …
934 if (x & 0xff00ff00) r += 8; 1068 if (x & 0xff00ff00) r += 8;
935 if (x & 0xffff0000) r += 16; 1069 if (x & 0xffff0000) r += 16;
936#endif 1070#endif
937 1071
938 return r; 1072 return r;
1073#endif
939 } 1074 }
940 1075
941 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x); 1076 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
942 ecb_function_ ecb_const int 1077 ecb_function_ ecb_const int
943 ecb_ctz64 (uint64_t x) 1078 ecb_ctz64 (uint64_t x)
944 { 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
945 int shift = x & 0xffffffffU ? 0 : 32; 1085 int shift = x & 0xffffffff ? 0 : 32;
946 return ecb_ctz32 (x >> shift) + shift; 1086 return ecb_ctz32 (x >> shift) + shift;
1087#endif
947 } 1088 }
948 1089
949 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x); 1090 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
950 ecb_function_ ecb_const int 1091 ecb_function_ ecb_const int
951 ecb_popcount32 (uint32_t x) 1092 ecb_popcount32 (uint32_t x)
… …
959 } 1100 }
960 1101
961 ecb_function_ ecb_const int ecb_ld32 (uint32_t x); 1102 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
962 ecb_function_ ecb_const int ecb_ld32 (uint32_t x) 1103 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
963 { 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
964 int r = 0; 1110 int r = 0;
965 1111
966 if (x >> 16) { x >>= 16; r += 16; } 1112 if (x >> 16) { x >>= 16; r += 16; }
967 if (x >> 8) { x >>= 8; r += 8; } 1113 if (x >> 8) { x >>= 8; r += 8; }
968 if (x >> 4) { x >>= 4; r += 4; } 1114 if (x >> 4) { x >>= 4; r += 4; }
969 if (x >> 2) { x >>= 2; r += 2; } 1115 if (x >> 2) { x >>= 2; r += 2; }
970 if (x >> 1) { r += 1; } 1116 if (x >> 1) { r += 1; }
971 1117
972 return r; 1118 return r;
1119#endif
973 } 1120 }
974 1121
975 ecb_function_ ecb_const int ecb_ld64 (uint64_t x); 1122 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
976 ecb_function_ ecb_const int ecb_ld64 (uint64_t x) 1123 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
977 { 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
978 int r = 0; 1130 int r = 0;
979 1131
980 if (x >> 32) { x >>= 32; r += 32; } 1132 if (x >> 32) { x >>= 32; r += 32; }
981 1133
982 return r + ecb_ld32 (x); 1134 return r + ecb_ld32 (x);
1135#endif
983 } 1136 }
984#endif 1137#endif
985 1138
986ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x); 1139ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
987ecb_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)); }
… …
1090#endif 1243#endif
1091 1244
1092/* try to tell the compiler that some condition is definitely true */ 1245/* try to tell the compiler that some condition is definitely true */
1093#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0 1246#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1094 1247
1095ecb_inline ecb_const unsigned char ecb_byteorder_helper (void); 1248ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1096ecb_inline ecb_const unsigned char 1249ecb_inline ecb_const uint32_t
1097ecb_byteorder_helper (void) 1250ecb_byteorder_helper (void)
1098{ 1251{
1099 /* the union code still generates code under pressure in gcc, */ 1252 /* the union code still generates code under pressure in gcc, */
1100 /* but less than using pointers, and always seems to */ 1253 /* but less than using pointers, and always seems to */
1101 /* successfully return a constant. */ 1254 /* successfully return a constant. */
1102 /* the reason why we have this horrible preprocessor mess */ 1255 /* the reason why we have this horrible preprocessor mess */
1103 /* 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 */
1104 /* or when using a recent enough gcc version (>= 4.6) */ 1257 /* or when using a recent enough gcc version (>= 4.6) */
1105#if ((__i386 || __i386__) && !__VOS__) || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64
1106 return 0x44;
1107#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
1108 return 0x44; 1261 return 0x44332211;
1109#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
1110 return 0x11; 1265 return 0x11223344;
1111#else 1266#else
1112 union 1267 union
1113 { 1268 {
1269 uint8_t c[4];
1114 uint32_t i; 1270 uint32_t u;
1115 uint8_t c;
1116 } u = { 0x11223344 }; 1271 } u = { 0x11, 0x22, 0x33, 0x44 };
1117 return u.c; 1272 return u.u;
1118#endif 1273#endif
1119} 1274}
1120 1275
1121ecb_inline ecb_const ecb_bool ecb_big_endian (void); 1276ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1122ecb_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; }
1123ecb_inline ecb_const ecb_bool ecb_little_endian (void); 1278ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1124ecb_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; }
1125 1280
1126#if ECB_GCC_VERSION(3,0) || ECB_C99 1281#if ECB_GCC_VERSION(3,0) || ECB_C99
1127 #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))
1128#else 1283#else
1129 #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)))
… …
1153 return N; 1308 return N;
1154 } 1309 }
1155#else 1310#else
1156 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1311 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1157#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}
1158 1409
1159/*******************************************************************************/ 1410/*******************************************************************************/
1160/* floating point stuff, can be disabled by defining ECB_NO_LIBM */ 1411/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1161 1412
1162/* basically, everything uses "ieee pure-endian" floating point numbers */ 1413/* basically, everything uses "ieee pure-endian" floating point numbers */
… …
1205 #else 1456 #else
1206 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e)) 1457 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1207 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e)) 1458 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1208 #endif 1459 #endif
1209 1460
1210 /* converts an ieee half/binary16 to a float */
1211 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1212 ecb_function_ ecb_const float
1213 ecb_binary16_to_float (uint16_t x)
1214 {
1215 int e = (x >> 10) & 0x1f;
1216 int m = x & 0x3ff;
1217 float r;
1218
1219 if (!e ) r = ecb_ldexpf (m , -24);
1220 else if (e != 31) r = ecb_ldexpf (m + 0x400, e - 25);
1221 else if (m ) r = ECB_NAN;
1222 else r = ECB_INFINITY;
1223
1224 return x & 0x8000 ? -r : r;
1225 }
1226
1227 /* convert a float to ieee single/binary32 */ 1461 /* convert a float to ieee single/binary32 */
1228 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);
1229 ecb_function_ ecb_const uint32_t 1463 ecb_function_ ecb_const uint32_t
1230 ecb_float_to_binary32 (float x) 1464 ecb_float_to_binary32 (float x)
1231 { 1465 {
… …
1362 #endif 1596 #endif
1363 1597
1364 return r; 1598 return r;
1365 } 1599 }
1366 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
1367#endif 1617#endif
1368 1618
1369#endif 1619#endif
1370 1620
1371/* ECB.H END */ 1621/* ECB.H END */
1372 1622
1373#if ECB_MEMORY_FENCE_NEEDS_PTHREADS 1623#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1374/* 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
1375 * 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
1376 * 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
1377 * libev, in which cases the memory fences become nops. 1627 * libev, in which cases the memory fences become nops.
1378 * alternatively, you can remove this #error and link against libpthread, 1628 * alternatively, you can remove this #error and link against libpthread,
1379 * which will then provide the memory fences. 1629 * which will then provide the memory fences.
1380 */ 1630 */
1381# error "memory fences not defined for your architecture, please report" 1631# error "memory fences not defined for your architecture, please report"
… …
1385# define ECB_MEMORY_FENCE do { } while (0) 1635# define ECB_MEMORY_FENCE do { } while (0)
1386# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 1636# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1387# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 1637# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1388#endif 1638#endif
1389 1639
1390#define expect_false(cond) ecb_expect_false (cond)
1391#define expect_true(cond) ecb_expect_true (cond)
1392#define noinline ecb_noinline
1393
1394#define inline_size ecb_inline 1640#define inline_size ecb_inline
1395 1641
1396#if EV_FEATURE_CODE 1642#if EV_FEATURE_CODE
1397# define inline_speed ecb_inline 1643# define inline_speed ecb_inline
1398#else 1644#else
1399# define inline_speed static noinline 1645# define inline_speed ecb_noinline static
1400#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/*****************************************************************************/
1401 1713
1402#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1714#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
1403 1715
1404#if EV_MINPRI == EV_MAXPRI 1716#if EV_MINPRI == EV_MAXPRI
1405# define ABSPRI(w) (((W)w), 0) 1717# define ABSPRI(w) (((W)w), 0)
1406#else 1718#else
1407# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1719# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
1408#endif 1720#endif
1409 1721
1410#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1722#define EMPTY /* required for microsofts broken pseudo-c compiler */
1411#define EMPTY2(a,b) /* used to suppress some warnings */
1412 1723
1413typedef ev_watcher *W; 1724typedef ev_watcher *W;
1414typedef ev_watcher_list *WL; 1725typedef ev_watcher_list *WL;
1415typedef ev_watcher_time *WT; 1726typedef ev_watcher_time *WT;
1416 1727
… …
1441# include "ev_win32.c" 1752# include "ev_win32.c"
1442#endif 1753#endif
1443 1754
1444/*****************************************************************************/ 1755/*****************************************************************************/
1445 1756
1757#if EV_USE_LINUXAIO
1758# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1759#endif
1760
1446/* define a suitable floor function (only used by periodics atm) */ 1761/* define a suitable floor function (only used by periodics atm) */
1447 1762
1448#if EV_USE_FLOOR 1763#if EV_USE_FLOOR
1449# include <math.h> 1764# include <math.h>
1450# define ev_floor(v) floor (v) 1765# define ev_floor(v) floor (v)
1451#else 1766#else
1452 1767
1453#include <float.h> 1768#include <float.h>
1454 1769
1455/* 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
1456static ev_tstamp noinline 1772static ev_tstamp
1457ev_floor (ev_tstamp v) 1773ev_floor (ev_tstamp v)
1458{ 1774{
1459 /* the choice of shift factor is not terribly important */ 1775 /* the choice of shift factor is not terribly important */
1460#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1776#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1461 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1777 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1462#else 1778#else
1463 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; 1779 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1464#endif 1780#endif
1465 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
1466 /* argument too large for an unsigned long? */ 1790 /* argument too large for an unsigned long? then reduce it */
1467 if (expect_false (v >= shift)) 1791 if (ecb_expect_false (v >= shift))
1468 { 1792 {
1469 ev_tstamp f; 1793 ev_tstamp f;
1470 1794
1471 if (v == v - 1.) 1795 if (v == v - 1.)
1472 return v; /* very large number */ 1796 return v; /* very large numbers are assumed to be integer */
1473 1797
1474 f = shift * ev_floor (v * (1. / shift)); 1798 f = shift * ev_floor (v * (1. / shift));
1475 return f + ev_floor (v - f); 1799 return f + ev_floor (v - f);
1476 } 1800 }
1477 1801
1478 /* special treatment for negative args? */
1479 if (expect_false (v < 0.))
1480 {
1481 ev_tstamp f = -ev_floor (-v);
1482
1483 return f - (f == v ? 0 : 1);
1484 }
1485
1486 /* fits into an unsigned long */ 1802 /* fits into an unsigned long */
1487 return (unsigned long)v; 1803 return (unsigned long)v;
1488} 1804}
1489 1805
1490#endif 1806#endif
… …
1493 1809
1494#ifdef __linux 1810#ifdef __linux
1495# include <sys/utsname.h> 1811# include <sys/utsname.h>
1496#endif 1812#endif
1497 1813
1498static unsigned int noinline ecb_cold 1814ecb_noinline ecb_cold
1815static unsigned int
1499ev_linux_version (void) 1816ev_linux_version (void)
1500{ 1817{
1501#ifdef __linux 1818#ifdef __linux
1502 unsigned int v = 0; 1819 unsigned int v = 0;
1503 struct utsname buf; 1820 struct utsname buf;
… …
1532} 1849}
1533 1850
1534/*****************************************************************************/ 1851/*****************************************************************************/
1535 1852
1536#if EV_AVOID_STDIO 1853#if EV_AVOID_STDIO
1537static void noinline ecb_cold 1854ecb_noinline ecb_cold
1855static void
1538ev_printerr (const char *msg) 1856ev_printerr (const char *msg)
1539{ 1857{
1540 write (STDERR_FILENO, msg, strlen (msg)); 1858 write (STDERR_FILENO, msg, strlen (msg));
1541} 1859}
1542#endif 1860#endif
1543 1861
1544static void (*syserr_cb)(const char *msg) EV_THROW; 1862static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
1545 1863
1546void ecb_cold 1864ecb_cold
1865void
1547ev_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
1548{ 1867{
1549 syserr_cb = cb; 1868 syserr_cb = cb;
1550} 1869}
1551 1870
1552static void noinline ecb_cold 1871ecb_noinline ecb_cold
1872static void
1553ev_syserr (const char *msg) 1873ev_syserr (const char *msg)
1554{ 1874{
1555 if (!msg) 1875 if (!msg)
1556 msg = "(libev) system error"; 1876 msg = "(libev) system error";
1557 1877
… …
1570 abort (); 1890 abort ();
1571 } 1891 }
1572} 1892}
1573 1893
1574static void * 1894static void *
1575ev_realloc_emul (void *ptr, long size) EV_THROW 1895ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
1576{ 1896{
1577 /* some systems, notably openbsd and darwin, fail to properly 1897 /* some systems, notably openbsd and darwin, fail to properly
1578 * 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
1579 * the single unix specification, so work around them here. 1899 * the single unix specification, so work around them here.
1580 * recently, also (at least) fedora and debian started breaking it, 1900 * recently, also (at least) fedora and debian started breaking it,
… …
1586 1906
1587 free (ptr); 1907 free (ptr);
1588 return 0; 1908 return 0;
1589} 1909}
1590 1910
1591static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul; 1911static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
1592 1912
1593void ecb_cold 1913ecb_cold
1914void
1594ev_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
1595{ 1916{
1596 alloc = cb; 1917 alloc = cb;
1597} 1918}
1598 1919
1599inline_speed void * 1920inline_speed void *
… …
1626typedef struct 1947typedef struct
1627{ 1948{
1628 WL head; 1949 WL head;
1629 unsigned char events; /* the events watched for */ 1950 unsigned char events; /* the events watched for */
1630 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) */
1631 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 */
1632 unsigned char unused; 1953 unsigned char eflags; /* flags field for use by backends */
1633#if EV_USE_EPOLL 1954#if EV_USE_EPOLL
1634 unsigned int egen; /* generation counter to counter epoll bugs */ 1955 unsigned int egen; /* generation counter to counter epoll bugs */
1635#endif 1956#endif
1636#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 1957#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1637 SOCKET handle; 1958 SOCKET handle;
… …
1691 static struct ev_loop default_loop_struct; 2012 static struct ev_loop default_loop_struct;
1692 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 */
1693 2014
1694#else 2015#else
1695 2016
1696 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 */
1697 #define VAR(name,decl) static decl; 2018 #define VAR(name,decl) static decl;
1698 #include "ev_vars.h" 2019 #include "ev_vars.h"
1699 #undef VAR 2020 #undef VAR
1700 2021
1701 static int ev_default_loop_ptr; 2022 static int ev_default_loop_ptr;
1702 2023
1703#endif 2024#endif
1704 2025
1705#if EV_FEATURE_API 2026#if EV_FEATURE_API
1706# 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)
1707# 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)
1708# define EV_INVOKE_PENDING invoke_cb (EV_A) 2029# define EV_INVOKE_PENDING invoke_cb (EV_A)
1709#else 2030#else
1710# define EV_RELEASE_CB (void)0 2031# define EV_RELEASE_CB (void)0
1711# define EV_ACQUIRE_CB (void)0 2032# define EV_ACQUIRE_CB (void)0
1712# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 2033# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
… …
1716 2037
1717/*****************************************************************************/ 2038/*****************************************************************************/
1718 2039
1719#ifndef EV_HAVE_EV_TIME 2040#ifndef EV_HAVE_EV_TIME
1720ev_tstamp 2041ev_tstamp
1721ev_time (void) EV_THROW 2042ev_time (void) EV_NOEXCEPT
1722{ 2043{
1723#if EV_USE_REALTIME 2044#if EV_USE_REALTIME
1724 if (expect_true (have_realtime)) 2045 if (ecb_expect_true (have_realtime))
1725 { 2046 {
1726 struct timespec ts; 2047 struct timespec ts;
1727 clock_gettime (CLOCK_REALTIME, &ts); 2048 clock_gettime (CLOCK_REALTIME, &ts);
1728 return ts.tv_sec + ts.tv_nsec * 1e-9; 2049 return EV_TS_GET (ts);
1729 } 2050 }
1730#endif 2051#endif
1731 2052
2053 {
1732 struct timeval tv; 2054 struct timeval tv;
1733 gettimeofday (&tv, 0); 2055 gettimeofday (&tv, 0);
1734 return tv.tv_sec + tv.tv_usec * 1e-6; 2056 return EV_TV_GET (tv);
2057 }
1735} 2058}
1736#endif 2059#endif
1737 2060
1738inline_size ev_tstamp 2061inline_size ev_tstamp
1739get_clock (void) 2062get_clock (void)
1740{ 2063{
1741#if EV_USE_MONOTONIC 2064#if EV_USE_MONOTONIC
1742 if (expect_true (have_monotonic)) 2065 if (ecb_expect_true (have_monotonic))
1743 { 2066 {
1744 struct timespec ts; 2067 struct timespec ts;
1745 clock_gettime (CLOCK_MONOTONIC, &ts); 2068 clock_gettime (CLOCK_MONOTONIC, &ts);
1746 return ts.tv_sec + ts.tv_nsec * 1e-9; 2069 return EV_TS_GET (ts);
1747 } 2070 }
1748#endif 2071#endif
1749 2072
1750 return ev_time (); 2073 return ev_time ();
1751} 2074}
1752 2075
1753#if EV_MULTIPLICITY 2076#if EV_MULTIPLICITY
1754ev_tstamp 2077ev_tstamp
1755ev_now (EV_P) EV_THROW 2078ev_now (EV_P) EV_NOEXCEPT
1756{ 2079{
1757 return ev_rt_now; 2080 return ev_rt_now;
1758} 2081}
1759#endif 2082#endif
1760 2083
1761void 2084void
1762ev_sleep (ev_tstamp delay) EV_THROW 2085ev_sleep (ev_tstamp delay) EV_NOEXCEPT
1763{ 2086{
1764 if (delay > 0.) 2087 if (delay > EV_TS_CONST (0.))
1765 { 2088 {
1766#if EV_USE_NANOSLEEP 2089#if EV_USE_NANOSLEEP
1767 struct timespec ts; 2090 struct timespec ts;
1768 2091
1769 EV_TS_SET (ts, delay); 2092 EV_TS_SET (ts, delay);
1770 nanosleep (&ts, 0); 2093 nanosleep (&ts, 0);
1771#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) */
1772 Sleep ((unsigned long)(delay * 1e3)); 2097 Sleep ((unsigned long)(EV_TS_TO_MSEC (delay)));
1773#else 2098#else
1774 struct timeval tv; 2099 struct timeval tv;
1775 2100
1776 /* 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 */
1777 /* something not guaranteed by newer posix versions, but guaranteed */ 2102 /* something not guaranteed by newer posix versions, but guaranteed */
… …
1807 } 2132 }
1808 2133
1809 return ncur; 2134 return ncur;
1810} 2135}
1811 2136
1812static void * noinline ecb_cold 2137ecb_noinline ecb_cold
2138static void *
1813array_realloc (int elem, void *base, int *cur, int cnt) 2139array_realloc (int elem, void *base, int *cur, int cnt)
1814{ 2140{
1815 *cur = array_nextsize (elem, *cur, cnt); 2141 *cur = array_nextsize (elem, *cur, cnt);
1816 return ev_realloc (base, elem * *cur); 2142 return ev_realloc (base, elem * *cur);
1817} 2143}
1818 2144
2145#define array_needsize_noinit(base,offset,count)
2146
1819#define array_init_zero(base,count) \ 2147#define array_needsize_zerofill(base,offset,count) \
1820 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2148 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
1821 2149
1822#define array_needsize(type,base,cur,cnt,init) \ 2150#define array_needsize(type,base,cur,cnt,init) \
1823 if (expect_false ((cnt) > (cur))) \ 2151 if (ecb_expect_false ((cnt) > (cur))) \
1824 { \ 2152 { \
1825 int ecb_unused ocur_ = (cur); \ 2153 ecb_unused int ocur_ = (cur); \
1826 (base) = (type *)array_realloc \ 2154 (base) = (type *)array_realloc \
1827 (sizeof (type), (base), &(cur), (cnt)); \ 2155 (sizeof (type), (base), &(cur), (cnt)); \
1828 init ((base) + (ocur_), (cur) - ocur_); \ 2156 init ((base), ocur_, ((cur) - ocur_)); \
1829 } 2157 }
1830 2158
1831#if 0 2159#if 0
1832#define array_slim(type,stem) \ 2160#define array_slim(type,stem) \
1833 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2161 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
1842 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
1843 2171
1844/*****************************************************************************/ 2172/*****************************************************************************/
1845 2173
1846/* dummy callback for pending events */ 2174/* dummy callback for pending events */
1847static void noinline 2175ecb_noinline
2176static void
1848pendingcb (EV_P_ ev_prepare *w, int revents) 2177pendingcb (EV_P_ ev_prepare *w, int revents)
1849{ 2178{
1850} 2179}
1851 2180
1852void noinline 2181ecb_noinline
2182void
1853ev_feed_event (EV_P_ void *w, int revents) EV_THROW 2183ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
1854{ 2184{
1855 W w_ = (W)w; 2185 W w_ = (W)w;
1856 int pri = ABSPRI (w_); 2186 int pri = ABSPRI (w_);
1857 2187
1858 if (expect_false (w_->pending)) 2188 if (ecb_expect_false (w_->pending))
1859 pendings [pri][w_->pending - 1].events |= revents; 2189 pendings [pri][w_->pending - 1].events |= revents;
1860 else 2190 else
1861 { 2191 {
1862 w_->pending = ++pendingcnt [pri]; 2192 w_->pending = ++pendingcnt [pri];
1863 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2193 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
1864 pendings [pri][w_->pending - 1].w = w_; 2194 pendings [pri][w_->pending - 1].w = w_;
1865 pendings [pri][w_->pending - 1].events = revents; 2195 pendings [pri][w_->pending - 1].events = revents;
1866 } 2196 }
1867 2197
1868 pendingpri = NUMPRI - 1; 2198 pendingpri = NUMPRI - 1;
1869} 2199}
1870 2200
1871inline_speed void 2201inline_speed void
1872feed_reverse (EV_P_ W w) 2202feed_reverse (EV_P_ W w)
1873{ 2203{
1874 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2204 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
1875 rfeeds [rfeedcnt++] = w; 2205 rfeeds [rfeedcnt++] = w;
1876} 2206}
1877 2207
1878inline_size void 2208inline_size void
1879feed_reverse_done (EV_P_ int revents) 2209feed_reverse_done (EV_P_ int revents)
… …
1914inline_speed void 2244inline_speed void
1915fd_event (EV_P_ int fd, int revents) 2245fd_event (EV_P_ int fd, int revents)
1916{ 2246{
1917 ANFD *anfd = anfds + fd; 2247 ANFD *anfd = anfds + fd;
1918 2248
1919 if (expect_true (!anfd->reify)) 2249 if (ecb_expect_true (!anfd->reify))
1920 fd_event_nocheck (EV_A_ fd, revents); 2250 fd_event_nocheck (EV_A_ fd, revents);
1921} 2251}
1922 2252
1923void 2253void
1924ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW 2254ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
1925{ 2255{
1926 if (fd >= 0 && fd < anfdmax) 2256 if (fd >= 0 && fd < anfdmax)
1927 fd_event_nocheck (EV_A_ fd, revents); 2257 fd_event_nocheck (EV_A_ fd, revents);
1928} 2258}
1929 2259
… …
1932inline_size void 2262inline_size void
1933fd_reify (EV_P) 2263fd_reify (EV_P)
1934{ 2264{
1935 int i; 2265 int i;
1936 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
1937#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 2279#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1938 for (i = 0; i < fdchangecnt; ++i) 2280 for (i = 0; i < changecnt; ++i)
1939 { 2281 {
1940 int fd = fdchanges [i]; 2282 int fd = fdchanges [i];
1941 ANFD *anfd = anfds + fd; 2283 ANFD *anfd = anfds + fd;
1942 2284
1943 if (anfd->reify & EV__IOFDSET && anfd->head) 2285 if (anfd->reify & EV__IOFDSET && anfd->head)
… …
1957 } 2299 }
1958 } 2300 }
1959 } 2301 }
1960#endif 2302#endif
1961 2303
1962 for (i = 0; i < fdchangecnt; ++i) 2304 for (i = 0; i < changecnt; ++i)
1963 { 2305 {
1964 int fd = fdchanges [i]; 2306 int fd = fdchanges [i];
1965 ANFD *anfd = anfds + fd; 2307 ANFD *anfd = anfds + fd;
1966 ev_io *w; 2308 ev_io *w;
1967 2309
1968 unsigned char o_events = anfd->events; 2310 unsigned char o_events = anfd->events;
1969 unsigned char o_reify = anfd->reify; 2311 unsigned char o_reify = anfd->reify;
1970 2312
1971 anfd->reify = 0; 2313 anfd->reify = 0;
1972 2314
1973 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 2315 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
1974 { 2316 {
1975 anfd->events = 0; 2317 anfd->events = 0;
1976 2318
1977 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)
1978 anfd->events |= (unsigned char)w->events; 2320 anfd->events |= (unsigned char)w->events;
… …
1983 2325
1984 if (o_reify & EV__IOFDSET) 2326 if (o_reify & EV__IOFDSET)
1985 backend_modify (EV_A_ fd, o_events, anfd->events); 2327 backend_modify (EV_A_ fd, o_events, anfd->events);
1986 } 2328 }
1987 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
1988 fdchangecnt = 0; 2337 fdchangecnt -= changecnt;
1989} 2338}
1990 2339
1991/* something about the given fd changed */ 2340/* something about the given fd changed */
1992inline_size void 2341inline_size
2342void
1993fd_change (EV_P_ int fd, int flags) 2343fd_change (EV_P_ int fd, int flags)
1994{ 2344{
1995 unsigned char reify = anfds [fd].reify; 2345 unsigned char reify = anfds [fd].reify;
1996 anfds [fd].reify |= flags; 2346 anfds [fd].reify |= flags;
1997 2347
1998 if (expect_true (!reify)) 2348 if (ecb_expect_true (!reify))
1999 { 2349 {
2000 ++fdchangecnt; 2350 ++fdchangecnt;
2001 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2351 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
2002 fdchanges [fdchangecnt - 1] = fd; 2352 fdchanges [fdchangecnt - 1] = fd;
2003 } 2353 }
2004} 2354}
2005 2355
2006/* 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 */
2007inline_speed void ecb_cold 2357inline_speed ecb_cold void
2008fd_kill (EV_P_ int fd) 2358fd_kill (EV_P_ int fd)
2009{ 2359{
2010 ev_io *w; 2360 ev_io *w;
2011 2361
2012 while ((w = (ev_io *)anfds [fd].head)) 2362 while ((w = (ev_io *)anfds [fd].head))
… …
2015 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);
2016 } 2366 }
2017} 2367}
2018 2368
2019/* check whether the given fd is actually valid, for error recovery */ 2369/* check whether the given fd is actually valid, for error recovery */
2020inline_size int ecb_cold 2370inline_size ecb_cold int
2021fd_valid (int fd) 2371fd_valid (int fd)
2022{ 2372{
2023#ifdef _WIN32 2373#ifdef _WIN32
2024 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2374 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
2025#else 2375#else
2026 return fcntl (fd, F_GETFD) != -1; 2376 return fcntl (fd, F_GETFD) != -1;
2027#endif 2377#endif
2028} 2378}
2029 2379
2030/* called on EBADF to verify fds */ 2380/* called on EBADF to verify fds */
2031static void noinline ecb_cold 2381ecb_noinline ecb_cold
2382static void
2032fd_ebadf (EV_P) 2383fd_ebadf (EV_P)
2033{ 2384{
2034 int fd; 2385 int fd;
2035 2386
2036 for (fd = 0; fd < anfdmax; ++fd) 2387 for (fd = 0; fd < anfdmax; ++fd)
… …
2038 if (!fd_valid (fd) && errno == EBADF) 2389 if (!fd_valid (fd) && errno == EBADF)
2039 fd_kill (EV_A_ fd); 2390 fd_kill (EV_A_ fd);
2040} 2391}
2041 2392
2042/* 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 */
2043static void noinline ecb_cold 2394ecb_noinline ecb_cold
2395static void
2044fd_enomem (EV_P) 2396fd_enomem (EV_P)
2045{ 2397{
2046 int fd; 2398 int fd;
2047 2399
2048 for (fd = anfdmax; fd--; ) 2400 for (fd = anfdmax; fd--; )
… …
2052 break; 2404 break;
2053 } 2405 }
2054} 2406}
2055 2407
2056/* 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 */
2057static void noinline 2409ecb_noinline
2410static void
2058fd_rearm_all (EV_P) 2411fd_rearm_all (EV_P)
2059{ 2412{
2060 int fd; 2413 int fd;
2061 2414
2062 for (fd = 0; fd < anfdmax; ++fd) 2415 for (fd = 0; fd < anfdmax; ++fd)
… …
2115 ev_tstamp minat; 2468 ev_tstamp minat;
2116 ANHE *minpos; 2469 ANHE *minpos;
2117 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2470 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
2118 2471
2119 /* find minimum child */ 2472 /* find minimum child */
2120 if (expect_true (pos + DHEAP - 1 < E)) 2473 if (ecb_expect_true (pos + DHEAP - 1 < E))
2121 { 2474 {
2122 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2475 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
2123 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));
2124 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));
2125 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));
2126 } 2479 }
2127 else if (pos < E) 2480 else if (pos < E)
2128 { 2481 {
2129 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2482 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
2130 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));
2131 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));
2132 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));
2133 } 2486 }
2134 else 2487 else
2135 break; 2488 break;
2136 2489
2137 if (ANHE_at (he) <= minat) 2490 if (ANHE_at (he) <= minat)
… …
2145 2498
2146 heap [k] = he; 2499 heap [k] = he;
2147 ev_active (ANHE_w (he)) = k; 2500 ev_active (ANHE_w (he)) = k;
2148} 2501}
2149 2502
2150#else /* 4HEAP */ 2503#else /* not 4HEAP */
2151 2504
2152#define HEAP0 1 2505#define HEAP0 1
2153#define HPARENT(k) ((k) >> 1) 2506#define HPARENT(k) ((k) >> 1)
2154#define UPHEAP_DONE(p,k) (!(p)) 2507#define UPHEAP_DONE(p,k) (!(p))
2155 2508
… …
2243 2596
2244/*****************************************************************************/ 2597/*****************************************************************************/
2245 2598
2246#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2599#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2247 2600
2248static void noinline ecb_cold 2601ecb_noinline ecb_cold
2602static void
2249evpipe_init (EV_P) 2603evpipe_init (EV_P)
2250{ 2604{
2251 if (!ev_is_active (&pipe_w)) 2605 if (!ev_is_active (&pipe_w))
2252 { 2606 {
2253 int fds [2]; 2607 int fds [2];
… …
2293inline_speed void 2647inline_speed void
2294evpipe_write (EV_P_ EV_ATOMIC_T *flag) 2648evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2295{ 2649{
2296 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 */
2297 2651
2298 if (expect_true (*flag)) 2652 if (ecb_expect_true (*flag))
2299 return; 2653 return;
2300 2654
2301 *flag = 1; 2655 *flag = 1;
2302 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 */
2303 2657
… …
2324#endif 2678#endif
2325 { 2679 {
2326#ifdef _WIN32 2680#ifdef _WIN32
2327 WSABUF buf; 2681 WSABUF buf;
2328 DWORD sent; 2682 DWORD sent;
2329 buf.buf = &buf; 2683 buf.buf = (char *)&buf;
2330 buf.len = 1; 2684 buf.len = 1;
2331 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);
2332#else 2686#else
2333 write (evpipe [1], &(evpipe [1]), 1); 2687 write (evpipe [1], &(evpipe [1]), 1);
2334#endif 2688#endif
… …
2380 sig_pending = 0; 2734 sig_pending = 0;
2381 2735
2382 ECB_MEMORY_FENCE; 2736 ECB_MEMORY_FENCE;
2383 2737
2384 for (i = EV_NSIG - 1; i--; ) 2738 for (i = EV_NSIG - 1; i--; )
2385 if (expect_false (signals [i].pending)) 2739 if (ecb_expect_false (signals [i].pending))
2386 ev_feed_signal_event (EV_A_ i + 1); 2740 ev_feed_signal_event (EV_A_ i + 1);
2387 } 2741 }
2388#endif 2742#endif
2389 2743
2390#if EV_ASYNC_ENABLE 2744#if EV_ASYNC_ENABLE
… …
2406} 2760}
2407 2761
2408/*****************************************************************************/ 2762/*****************************************************************************/
2409 2763
2410void 2764void
2411ev_feed_signal (int signum) EV_THROW 2765ev_feed_signal (int signum) EV_NOEXCEPT
2412{ 2766{
2413#if EV_MULTIPLICITY 2767#if EV_MULTIPLICITY
2414 EV_P; 2768 EV_P;
2415 ECB_MEMORY_FENCE_ACQUIRE; 2769 ECB_MEMORY_FENCE_ACQUIRE;
2416 EV_A = signals [signum - 1].loop; 2770 EV_A = signals [signum - 1].loop;
… …
2431#endif 2785#endif
2432 2786
2433 ev_feed_signal (signum); 2787 ev_feed_signal (signum);
2434} 2788}
2435 2789
2436void noinline 2790ecb_noinline
2791void
2437ev_feed_signal_event (EV_P_ int signum) EV_THROW 2792ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
2438{ 2793{
2439 WL w; 2794 WL w;
2440 2795
2441 if (expect_false (signum <= 0 || signum >= EV_NSIG)) 2796 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
2442 return; 2797 return;
2443 2798
2444 --signum; 2799 --signum;
2445 2800
2446#if EV_MULTIPLICITY 2801#if EV_MULTIPLICITY
2447 /* 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 */
2448 /* or, likely more useful, feeding a signal nobody is waiting for */ 2803 /* or, likely more useful, feeding a signal nobody is waiting for */
2449 2804
2450 if (expect_false (signals [signum].loop != EV_A)) 2805 if (ecb_expect_false (signals [signum].loop != EV_A))
2451 return; 2806 return;
2452#endif 2807#endif
2453 2808
2454 signals [signum].pending = 0; 2809 signals [signum].pending = 0;
2455 ECB_MEMORY_FENCE_RELEASE; 2810 ECB_MEMORY_FENCE_RELEASE;
… …
2539 2894
2540#endif 2895#endif
2541 2896
2542/*****************************************************************************/ 2897/*****************************************************************************/
2543 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
2544#if EV_USE_IOCP 2951#if EV_USE_IOCP
2545# include "ev_iocp.c" 2952# include "ev_iocp.c"
2546#endif 2953#endif
2547#if EV_USE_PORT 2954#if EV_USE_PORT
2548# include "ev_port.c" 2955# include "ev_port.c"
… …
2551# include "ev_kqueue.c" 2958# include "ev_kqueue.c"
2552#endif 2959#endif
2553#if EV_USE_EPOLL 2960#if EV_USE_EPOLL
2554# include "ev_epoll.c" 2961# include "ev_epoll.c"
2555#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
2556#if EV_USE_POLL 2969#if EV_USE_POLL
2557# include "ev_poll.c" 2970# include "ev_poll.c"
2558#endif 2971#endif
2559#if EV_USE_SELECT 2972#if EV_USE_SELECT
2560# include "ev_select.c" 2973# include "ev_select.c"
2561#endif 2974#endif
2562 2975
2563int ecb_cold 2976ecb_cold int
2564ev_version_major (void) EV_THROW 2977ev_version_major (void) EV_NOEXCEPT
2565{ 2978{
2566 return EV_VERSION_MAJOR; 2979 return EV_VERSION_MAJOR;
2567} 2980}
2568 2981
2569int ecb_cold 2982ecb_cold int
2570ev_version_minor (void) EV_THROW 2983ev_version_minor (void) EV_NOEXCEPT
2571{ 2984{
2572 return EV_VERSION_MINOR; 2985 return EV_VERSION_MINOR;
2573} 2986}
2574 2987
2575/* 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 */
2576int inline_size ecb_cold 2989inline_size ecb_cold int
2577enable_secure (void) 2990enable_secure (void)
2578{ 2991{
2579#ifdef _WIN32 2992#ifdef _WIN32
2580 return 0; 2993 return 0;
2581#else 2994#else
2582 return getuid () != geteuid () 2995 return getuid () != geteuid ()
2583 || getgid () != getegid (); 2996 || getgid () != getegid ();
2584#endif 2997#endif
2585} 2998}
2586 2999
2587unsigned int ecb_cold 3000ecb_cold
3001unsigned int
2588ev_supported_backends (void) EV_THROW 3002ev_supported_backends (void) EV_NOEXCEPT
2589{ 3003{
2590 unsigned int flags = 0; 3004 unsigned int flags = 0;
2591 3005
2592 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 3006 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2593 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 3007 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
2594 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 3008 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2595 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 3009 if (EV_USE_LINUXAIO ) flags |= EVBACKEND_LINUXAIO;
2596 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 3010 if (EV_USE_IOURING && ev_linux_version () >= 0x050601) flags |= EVBACKEND_IOURING; /* 5.6.1+ */
2597 3011 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
3012 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
3013
2598 return flags; 3014 return flags;
2599} 3015}
2600 3016
2601unsigned int ecb_cold 3017ecb_cold
3018unsigned int
2602ev_recommended_backends (void) EV_THROW 3019ev_recommended_backends (void) EV_NOEXCEPT
2603{ 3020{
2604 unsigned int flags = ev_supported_backends (); 3021 unsigned int flags = ev_supported_backends ();
2605 3022
2606#ifndef __NetBSD__ 3023#ifndef __NetBSD__
2607 /* kqueue is borked on everything but netbsd apparently */ 3024 /* kqueue is borked on everything but netbsd apparently */
… …
2615#endif 3032#endif
2616#ifdef __FreeBSD__ 3033#ifdef __FreeBSD__
2617 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) */
2618#endif 3035#endif
2619 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
2620 return flags; 3046 return flags;
2621} 3047}
2622 3048
2623unsigned int ecb_cold 3049ecb_cold
3050unsigned int
2624ev_embeddable_backends (void) EV_THROW 3051ev_embeddable_backends (void) EV_NOEXCEPT
2625{ 3052{
2626 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 3053 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT | EVBACKEND_IOURING;
2627 3054
2628 /* 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 */
2629 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 */
2630 flags &= ~EVBACKEND_EPOLL; 3057 flags &= ~EVBACKEND_EPOLL;
2631 3058
3059 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
3060
2632 return flags; 3061 return flags;
2633} 3062}
2634 3063
2635unsigned int 3064unsigned int
2636ev_backend (EV_P) EV_THROW 3065ev_backend (EV_P) EV_NOEXCEPT
2637{ 3066{
2638 return backend; 3067 return backend;
2639} 3068}
2640 3069
2641#if EV_FEATURE_API 3070#if EV_FEATURE_API
2642unsigned int 3071unsigned int
2643ev_iteration (EV_P) EV_THROW 3072ev_iteration (EV_P) EV_NOEXCEPT
2644{ 3073{
2645 return loop_count; 3074 return loop_count;
2646} 3075}
2647 3076
2648unsigned int 3077unsigned int
2649ev_depth (EV_P) EV_THROW 3078ev_depth (EV_P) EV_NOEXCEPT
2650{ 3079{
2651 return loop_depth; 3080 return loop_depth;
2652} 3081}
2653 3082
2654void 3083void
2655ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW 3084ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2656{ 3085{
2657 io_blocktime = interval; 3086 io_blocktime = interval;
2658} 3087}
2659 3088
2660void 3089void
2661ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW 3090ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2662{ 3091{
2663 timeout_blocktime = interval; 3092 timeout_blocktime = interval;
2664} 3093}
2665 3094
2666void 3095void
2667ev_set_userdata (EV_P_ void *data) EV_THROW 3096ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2668{ 3097{
2669 userdata = data; 3098 userdata = data;
2670} 3099}
2671 3100
2672void * 3101void *
2673ev_userdata (EV_P) EV_THROW 3102ev_userdata (EV_P) EV_NOEXCEPT
2674{ 3103{
2675 return userdata; 3104 return userdata;
2676} 3105}
2677 3106
2678void 3107void
2679ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW 3108ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
2680{ 3109{
2681 invoke_cb = invoke_pending_cb; 3110 invoke_cb = invoke_pending_cb;
2682} 3111}
2683 3112
2684void 3113void
2685ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW 3114ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
2686{ 3115{
2687 release_cb = release; 3116 release_cb = release;
2688 acquire_cb = acquire; 3117 acquire_cb = acquire;
2689} 3118}
2690#endif 3119#endif
2691 3120
2692/* initialise a loop structure, must be zero-initialised */ 3121/* initialise a loop structure, must be zero-initialised */
2693static void noinline ecb_cold 3122ecb_noinline ecb_cold
3123static void
2694loop_init (EV_P_ unsigned int flags) EV_THROW 3124loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
2695{ 3125{
2696 if (!backend) 3126 if (!backend)
2697 { 3127 {
2698 origflags = flags; 3128 origflags = flags;
2699 3129
… …
2752 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3182 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2753#endif 3183#endif
2754#if EV_USE_SIGNALFD 3184#if EV_USE_SIGNALFD
2755 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 3185 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2756#endif 3186#endif
3187#if EV_USE_TIMERFD
3188 timerfd = flags & EVFLAG_NOTIMERFD ? -1 : -2;
3189#endif
2757 3190
2758 if (!(flags & EVBACKEND_MASK)) 3191 if (!(flags & EVBACKEND_MASK))
2759 flags |= ev_recommended_backends (); 3192 flags |= ev_recommended_backends ();
2760 3193
2761#if EV_USE_IOCP 3194#if EV_USE_IOCP
2762 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 3195 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2763#endif 3196#endif
2764#if EV_USE_PORT 3197#if EV_USE_PORT
2765 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3198 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
2766#endif 3199#endif
2767#if EV_USE_KQUEUE 3200#if EV_USE_KQUEUE
2768 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 3201 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
3202#endif
3203#if EV_USE_IOURING
3204 if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
3205#endif
3206#if EV_USE_LINUXAIO
3207 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
2769#endif 3208#endif
2770#if EV_USE_EPOLL 3209#if EV_USE_EPOLL
2771 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3210 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
2772#endif 3211#endif
2773#if EV_USE_POLL 3212#if EV_USE_POLL
2774 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3213 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
2775#endif 3214#endif
2776#if EV_USE_SELECT 3215#if EV_USE_SELECT
2777 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3216 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
2778#endif 3217#endif
2779 3218
2780 ev_prepare_init (&pending_w, pendingcb); 3219 ev_prepare_init (&pending_w, pendingcb);
2781 3220
2782#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3221#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
2785#endif 3224#endif
2786 } 3225 }
2787} 3226}
2788 3227
2789/* free up a loop structure */ 3228/* free up a loop structure */
2790void ecb_cold 3229ecb_cold
3230void
2791ev_loop_destroy (EV_P) 3231ev_loop_destroy (EV_P)
2792{ 3232{
2793 int i; 3233 int i;
2794 3234
2795#if EV_MULTIPLICITY 3235#if EV_MULTIPLICITY
… …
2798 return; 3238 return;
2799#endif 3239#endif
2800 3240
2801#if EV_CLEANUP_ENABLE 3241#if EV_CLEANUP_ENABLE
2802 /* queue cleanup watchers (and execute them) */ 3242 /* queue cleanup watchers (and execute them) */
2803 if (expect_false (cleanupcnt)) 3243 if (ecb_expect_false (cleanupcnt))
2804 { 3244 {
2805 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); 3245 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2806 EV_INVOKE_PENDING; 3246 EV_INVOKE_PENDING;
2807 } 3247 }
2808#endif 3248#endif
… …
2827#if EV_USE_SIGNALFD 3267#if EV_USE_SIGNALFD
2828 if (ev_is_active (&sigfd_w)) 3268 if (ev_is_active (&sigfd_w))
2829 close (sigfd); 3269 close (sigfd);
2830#endif 3270#endif
2831 3271
3272#if EV_USE_TIMERFD
3273 if (ev_is_active (&timerfd_w))
3274 close (timerfd);
3275#endif
3276
2832#if EV_USE_INOTIFY 3277#if EV_USE_INOTIFY
2833 if (fs_fd >= 0) 3278 if (fs_fd >= 0)
2834 close (fs_fd); 3279 close (fs_fd);
2835#endif 3280#endif
2836 3281
2837 if (backend_fd >= 0) 3282 if (backend_fd >= 0)
2838 close (backend_fd); 3283 close (backend_fd);
2839 3284
2840#if EV_USE_IOCP 3285#if EV_USE_IOCP
2841 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3286 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2842#endif 3287#endif
2843#if EV_USE_PORT 3288#if EV_USE_PORT
2844 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3289 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
2845#endif 3290#endif
2846#if EV_USE_KQUEUE 3291#if EV_USE_KQUEUE
2847 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3292 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3293#endif
3294#if EV_USE_IOURING
3295 if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
3296#endif
3297#if EV_USE_LINUXAIO
3298 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
2848#endif 3299#endif
2849#if EV_USE_EPOLL 3300#if EV_USE_EPOLL
2850 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3301 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
2851#endif 3302#endif
2852#if EV_USE_POLL 3303#if EV_USE_POLL
2853 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3304 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
2854#endif 3305#endif
2855#if EV_USE_SELECT 3306#if EV_USE_SELECT
2856 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3307 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
2857#endif 3308#endif
2858 3309
2859 for (i = NUMPRI; i--; ) 3310 for (i = NUMPRI; i--; )
2860 { 3311 {
2861 array_free (pending, [i]); 3312 array_free (pending, [i]);
… …
2903 3354
2904inline_size void 3355inline_size void
2905loop_fork (EV_P) 3356loop_fork (EV_P)
2906{ 3357{
2907#if EV_USE_PORT 3358#if EV_USE_PORT
2908 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3359 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
2909#endif 3360#endif
2910#if EV_USE_KQUEUE 3361#if EV_USE_KQUEUE
2911 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3362 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3363#endif
3364#if EV_USE_IOURING
3365 if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
3366#endif
3367#if EV_USE_LINUXAIO
3368 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
2912#endif 3369#endif
2913#if EV_USE_EPOLL 3370#if EV_USE_EPOLL
2914 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3371 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
2915#endif 3372#endif
2916#if EV_USE_INOTIFY 3373#if EV_USE_INOTIFY
2917 infy_fork (EV_A); 3374 infy_fork (EV_A);
2918#endif 3375#endif
2919 3376
3377 if (postfork != 2)
3378 {
3379 #if EV_USE_SIGNALFD
3380 /* surprisingly, nothing needs to be done for signalfd, accoridng to docs, it does the right thing on fork */
3381 #endif
3382
3383 #if EV_USE_TIMERFD
3384 if (ev_is_active (&timerfd_w))
3385 {
3386 ev_ref (EV_A);
3387 ev_io_stop (EV_A_ &timerfd_w);
3388
3389 close (timerfd);
3390 timerfd = -2;
3391
3392 evtimerfd_init (EV_A);
3393 /* reschedule periodics, in case we missed something */
3394 ev_feed_event (EV_A_ &timerfd_w, EV_CUSTOM);
3395 }
3396 #endif
3397
2920#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3398 #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2921 if (ev_is_active (&pipe_w)) 3399 if (ev_is_active (&pipe_w))
2922 { 3400 {
2923 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 3401 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2924 3402
2925 ev_ref (EV_A); 3403 ev_ref (EV_A);
2926 ev_io_stop (EV_A_ &pipe_w); 3404 ev_io_stop (EV_A_ &pipe_w);
2927 3405
2928 if (evpipe [0] >= 0) 3406 if (evpipe [0] >= 0)
2929 EV_WIN32_CLOSE_FD (evpipe [0]); 3407 EV_WIN32_CLOSE_FD (evpipe [0]);
2930 3408
2931 evpipe_init (EV_A); 3409 evpipe_init (EV_A);
2932 /* iterate over everything, in case we missed something before */ 3410 /* iterate over everything, in case we missed something before */
2933 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3411 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3412 }
3413 #endif
2934 } 3414 }
2935#endif
2936 3415
2937 postfork = 0; 3416 postfork = 0;
2938} 3417}
2939 3418
2940#if EV_MULTIPLICITY 3419#if EV_MULTIPLICITY
2941 3420
3421ecb_cold
2942struct ev_loop * ecb_cold 3422struct ev_loop *
2943ev_loop_new (unsigned int flags) EV_THROW 3423ev_loop_new (unsigned int flags) EV_NOEXCEPT
2944{ 3424{
2945 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3425 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2946 3426
2947 memset (EV_A, 0, sizeof (struct ev_loop)); 3427 memset (EV_A, 0, sizeof (struct ev_loop));
2948 loop_init (EV_A_ flags); 3428 loop_init (EV_A_ flags);
… …
2955} 3435}
2956 3436
2957#endif /* multiplicity */ 3437#endif /* multiplicity */
2958 3438
2959#if EV_VERIFY 3439#if EV_VERIFY
2960static void noinline ecb_cold 3440ecb_noinline ecb_cold
3441static void
2961verify_watcher (EV_P_ W w) 3442verify_watcher (EV_P_ W w)
2962{ 3443{
2963 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3444 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2964 3445
2965 if (w->pending) 3446 if (w->pending)
2966 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3447 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2967} 3448}
2968 3449
2969static void noinline ecb_cold 3450ecb_noinline ecb_cold
3451static void
2970verify_heap (EV_P_ ANHE *heap, int N) 3452verify_heap (EV_P_ ANHE *heap, int N)
2971{ 3453{
2972 int i; 3454 int i;
2973 3455
2974 for (i = HEAP0; i < N + HEAP0; ++i) 3456 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2979 3461
2980 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3462 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2981 } 3463 }
2982} 3464}
2983 3465
2984static void noinline ecb_cold 3466ecb_noinline ecb_cold
3467static void
2985array_verify (EV_P_ W *ws, int cnt) 3468array_verify (EV_P_ W *ws, int cnt)
2986{ 3469{
2987 while (cnt--) 3470 while (cnt--)
2988 { 3471 {
2989 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3472 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2992} 3475}
2993#endif 3476#endif
2994 3477
2995#if EV_FEATURE_API 3478#if EV_FEATURE_API
2996void ecb_cold 3479void ecb_cold
2997ev_verify (EV_P) EV_THROW 3480ev_verify (EV_P) EV_NOEXCEPT
2998{ 3481{
2999#if EV_VERIFY 3482#if EV_VERIFY
3000 int i; 3483 int i;
3001 WL w, w2; 3484 WL w, w2;
3002 3485
… …
3078#endif 3561#endif
3079} 3562}
3080#endif 3563#endif
3081 3564
3082#if EV_MULTIPLICITY 3565#if EV_MULTIPLICITY
3566ecb_cold
3083struct ev_loop * ecb_cold 3567struct ev_loop *
3084#else 3568#else
3085int 3569int
3086#endif 3570#endif
3087ev_default_loop (unsigned int flags) EV_THROW 3571ev_default_loop (unsigned int flags) EV_NOEXCEPT
3088{ 3572{
3089 if (!ev_default_loop_ptr) 3573 if (!ev_default_loop_ptr)
3090 { 3574 {
3091#if EV_MULTIPLICITY 3575#if EV_MULTIPLICITY
3092 EV_P = ev_default_loop_ptr = &default_loop_struct; 3576 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
3111 3595
3112 return ev_default_loop_ptr; 3596 return ev_default_loop_ptr;
3113} 3597}
3114 3598
3115void 3599void
3116ev_loop_fork (EV_P) EV_THROW 3600ev_loop_fork (EV_P) EV_NOEXCEPT
3117{ 3601{
3118 postfork = 1; 3602 postfork = 1;
3119} 3603}
3120 3604
3121/*****************************************************************************/ 3605/*****************************************************************************/
… …
3125{ 3609{
3126 EV_CB_INVOKE ((W)w, revents); 3610 EV_CB_INVOKE ((W)w, revents);
3127} 3611}
3128 3612
3129unsigned int 3613unsigned int
3130ev_pending_count (EV_P) EV_THROW 3614ev_pending_count (EV_P) EV_NOEXCEPT
3131{ 3615{
3132 int pri; 3616 int pri;
3133 unsigned int count = 0; 3617 unsigned int count = 0;
3134 3618
3135 for (pri = NUMPRI; pri--; ) 3619 for (pri = NUMPRI; pri--; )
3136 count += pendingcnt [pri]; 3620 count += pendingcnt [pri];
3137 3621
3138 return count; 3622 return count;
3139} 3623}
3140 3624
3141void noinline 3625ecb_noinline
3626void
3142ev_invoke_pending (EV_P) 3627ev_invoke_pending (EV_P)
3143{ 3628{
3144 pendingpri = NUMPRI; 3629 pendingpri = NUMPRI;
3145 3630
3146 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */ 3631 do
3147 { 3632 {
3148 --pendingpri; 3633 --pendingpri;
3149 3634
3635 /* pendingpri possibly gets modified in the inner loop */
3150 while (pendingcnt [pendingpri]) 3636 while (pendingcnt [pendingpri])
3151 { 3637 {
3152 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri]; 3638 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
3153 3639
3154 p->w->pending = 0; 3640 p->w->pending = 0;
3155 EV_CB_INVOKE (p->w, p->events); 3641 EV_CB_INVOKE (p->w, p->events);
3156 EV_FREQUENT_CHECK; 3642 EV_FREQUENT_CHECK;
3157 } 3643 }
3158 } 3644 }
3645 while (pendingpri);
3159} 3646}
3160 3647
3161#if EV_IDLE_ENABLE 3648#if EV_IDLE_ENABLE
3162/* make idle watchers pending. this handles the "call-idle */ 3649/* make idle watchers pending. this handles the "call-idle */
3163/* only when higher priorities are idle" logic */ 3650/* only when higher priorities are idle" logic */
3164inline_size void 3651inline_size void
3165idle_reify (EV_P) 3652idle_reify (EV_P)
3166{ 3653{
3167 if (expect_false (idleall)) 3654 if (ecb_expect_false (idleall))
3168 { 3655 {
3169 int pri; 3656 int pri;
3170 3657
3171 for (pri = NUMPRI; pri--; ) 3658 for (pri = NUMPRI; pri--; )
3172 { 3659 {
… …
3202 { 3689 {
3203 ev_at (w) += w->repeat; 3690 ev_at (w) += w->repeat;
3204 if (ev_at (w) < mn_now) 3691 if (ev_at (w) < mn_now)
3205 ev_at (w) = mn_now; 3692 ev_at (w) = mn_now;
3206 3693
3207 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 3694 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > EV_TS_CONST (0.)));
3208 3695
3209 ANHE_at_cache (timers [HEAP0]); 3696 ANHE_at_cache (timers [HEAP0]);
3210 downheap (timers, timercnt, HEAP0); 3697 downheap (timers, timercnt, HEAP0);
3211 } 3698 }
3212 else 3699 else
… …
3221 } 3708 }
3222} 3709}
3223 3710
3224#if EV_PERIODIC_ENABLE 3711#if EV_PERIODIC_ENABLE
3225 3712
3226static void noinline 3713ecb_noinline
3714static void
3227periodic_recalc (EV_P_ ev_periodic *w) 3715periodic_recalc (EV_P_ ev_periodic *w)
3228{ 3716{
3229 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3717 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3230 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); 3718 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3231 3719
… …
3233 while (at <= ev_rt_now) 3721 while (at <= ev_rt_now)
3234 { 3722 {
3235 ev_tstamp nat = at + w->interval; 3723 ev_tstamp nat = at + w->interval;
3236 3724
3237 /* when resolution fails us, we use ev_rt_now */ 3725 /* when resolution fails us, we use ev_rt_now */
3238 if (expect_false (nat == at)) 3726 if (ecb_expect_false (nat == at))
3239 { 3727 {
3240 at = ev_rt_now; 3728 at = ev_rt_now;
3241 break; 3729 break;
3242 } 3730 }
3243 3731
… …
3289 } 3777 }
3290} 3778}
3291 3779
3292/* simply recalculate all periodics */ 3780/* simply recalculate all periodics */
3293/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3781/* TODO: maybe ensure that at least one event happens when jumping forward? */
3294static void noinline ecb_cold 3782ecb_noinline ecb_cold
3783static void
3295periodics_reschedule (EV_P) 3784periodics_reschedule (EV_P)
3296{ 3785{
3297 int i; 3786 int i;
3298 3787
3299 /* adjust periodics after time jump */ 3788 /* adjust periodics after time jump */
… …
3312 reheap (periodics, periodiccnt); 3801 reheap (periodics, periodiccnt);
3313} 3802}
3314#endif 3803#endif
3315 3804
3316/* adjust all timers by a given offset */ 3805/* adjust all timers by a given offset */
3317static void noinline ecb_cold 3806ecb_noinline ecb_cold
3807static void
3318timers_reschedule (EV_P_ ev_tstamp adjust) 3808timers_reschedule (EV_P_ ev_tstamp adjust)
3319{ 3809{
3320 int i; 3810 int i;
3321 3811
3322 for (i = 0; i < timercnt; ++i) 3812 for (i = 0; i < timercnt; ++i)
… …
3331/* also detect if there was a timejump, and act accordingly */ 3821/* also detect if there was a timejump, and act accordingly */
3332inline_speed void 3822inline_speed void
3333time_update (EV_P_ ev_tstamp max_block) 3823time_update (EV_P_ ev_tstamp max_block)
3334{ 3824{
3335#if EV_USE_MONOTONIC 3825#if EV_USE_MONOTONIC
3336 if (expect_true (have_monotonic)) 3826 if (ecb_expect_true (have_monotonic))
3337 { 3827 {
3338 int i; 3828 int i;
3339 ev_tstamp odiff = rtmn_diff; 3829 ev_tstamp odiff = rtmn_diff;
3340 3830
3341 mn_now = get_clock (); 3831 mn_now = get_clock ();
3342 3832
3343 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3833 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
3344 /* interpolate in the meantime */ 3834 /* interpolate in the meantime */
3345 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3835 if (ecb_expect_true (mn_now - now_floor < EV_TS_CONST (MIN_TIMEJUMP * .5)))
3346 { 3836 {
3347 ev_rt_now = rtmn_diff + mn_now; 3837 ev_rt_now = rtmn_diff + mn_now;
3348 return; 3838 return;
3349 } 3839 }
3350 3840
… …
3364 ev_tstamp diff; 3854 ev_tstamp diff;
3365 rtmn_diff = ev_rt_now - mn_now; 3855 rtmn_diff = ev_rt_now - mn_now;
3366 3856
3367 diff = odiff - rtmn_diff; 3857 diff = odiff - rtmn_diff;
3368 3858
3369 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP)) 3859 if (ecb_expect_true ((diff < EV_TS_CONST (0.) ? -diff : diff) < EV_TS_CONST (MIN_TIMEJUMP)))
3370 return; /* all is well */ 3860 return; /* all is well */
3371 3861
3372 ev_rt_now = ev_time (); 3862 ev_rt_now = ev_time ();
3373 mn_now = get_clock (); 3863 mn_now = get_clock ();
3374 now_floor = mn_now; 3864 now_floor = mn_now;
… …
3383 else 3873 else
3384#endif 3874#endif
3385 { 3875 {
3386 ev_rt_now = ev_time (); 3876 ev_rt_now = ev_time ();
3387 3877
3388 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 3878 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + EV_TS_CONST (MIN_TIMEJUMP)))
3389 { 3879 {
3390 /* adjust timers. this is easy, as the offset is the same for all of them */ 3880 /* adjust timers. this is easy, as the offset is the same for all of them */
3391 timers_reschedule (EV_A_ ev_rt_now - mn_now); 3881 timers_reschedule (EV_A_ ev_rt_now - mn_now);
3392#if EV_PERIODIC_ENABLE 3882#if EV_PERIODIC_ENABLE
3393 periodics_reschedule (EV_A); 3883 periodics_reschedule (EV_A);
… …
3416#if EV_VERIFY >= 2 3906#if EV_VERIFY >= 2
3417 ev_verify (EV_A); 3907 ev_verify (EV_A);
3418#endif 3908#endif
3419 3909
3420#ifndef _WIN32 3910#ifndef _WIN32
3421 if (expect_false (curpid)) /* penalise the forking check even more */ 3911 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
3422 if (expect_false (getpid () != curpid)) 3912 if (ecb_expect_false (getpid () != curpid))
3423 { 3913 {
3424 curpid = getpid (); 3914 curpid = getpid ();
3425 postfork = 1; 3915 postfork = 1;
3426 } 3916 }
3427#endif 3917#endif
3428 3918
3429#if EV_FORK_ENABLE 3919#if EV_FORK_ENABLE
3430 /* we might have forked, so queue fork handlers */ 3920 /* we might have forked, so queue fork handlers */
3431 if (expect_false (postfork)) 3921 if (ecb_expect_false (postfork))
3432 if (forkcnt) 3922 if (forkcnt)
3433 { 3923 {
3434 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3924 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
3435 EV_INVOKE_PENDING; 3925 EV_INVOKE_PENDING;
3436 } 3926 }
3437#endif 3927#endif
3438 3928
3439#if EV_PREPARE_ENABLE 3929#if EV_PREPARE_ENABLE
3440 /* queue prepare watchers (and execute them) */ 3930 /* queue prepare watchers (and execute them) */
3441 if (expect_false (preparecnt)) 3931 if (ecb_expect_false (preparecnt))
3442 { 3932 {
3443 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3933 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
3444 EV_INVOKE_PENDING; 3934 EV_INVOKE_PENDING;
3445 } 3935 }
3446#endif 3936#endif
3447 3937
3448 if (expect_false (loop_done)) 3938 if (ecb_expect_false (loop_done))
3449 break; 3939 break;
3450 3940
3451 /* we might have forked, so reify kernel state if necessary */ 3941 /* we might have forked, so reify kernel state if necessary */
3452 if (expect_false (postfork)) 3942 if (ecb_expect_false (postfork))
3453 loop_fork (EV_A); 3943 loop_fork (EV_A);
3454 3944
3455 /* update fd-related kernel structures */ 3945 /* update fd-related kernel structures */
3456 fd_reify (EV_A); 3946 fd_reify (EV_A);
3457 3947
… …
3462 3952
3463 /* remember old timestamp for io_blocktime calculation */ 3953 /* remember old timestamp for io_blocktime calculation */
3464 ev_tstamp prev_mn_now = mn_now; 3954 ev_tstamp prev_mn_now = mn_now;
3465 3955
3466 /* update time to cancel out callback processing overhead */ 3956 /* update time to cancel out callback processing overhead */
3467 time_update (EV_A_ 1e100); 3957 time_update (EV_A_ EV_TS_CONST (EV_TSTAMP_HUGE));
3468 3958
3469 /* from now on, we want a pipe-wake-up */ 3959 /* from now on, we want a pipe-wake-up */
3470 pipe_write_wanted = 1; 3960 pipe_write_wanted = 1;
3471 3961
3472 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */ 3962 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3473 3963
3474 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) 3964 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
3475 { 3965 {
3476 waittime = MAX_BLOCKTIME; 3966 waittime = EV_TS_CONST (MAX_BLOCKTIME);
3477 3967
3478 if (timercnt) 3968 if (timercnt)
3479 { 3969 {
3480 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now; 3970 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
3481 if (waittime > to) waittime = to; 3971 if (waittime > to) waittime = to;
… …
3488 if (waittime > to) waittime = to; 3978 if (waittime > to) waittime = to;
3489 } 3979 }
3490#endif 3980#endif
3491 3981
3492 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3982 /* don't let timeouts decrease the waittime below timeout_blocktime */
3493 if (expect_false (waittime < timeout_blocktime)) 3983 if (ecb_expect_false (waittime < timeout_blocktime))
3494 waittime = timeout_blocktime; 3984 waittime = timeout_blocktime;
3495 3985
3496 /* at this point, we NEED to wait, so we have to ensure */ 3986 /* now there are two more special cases left, either we have
3497 /* to pass a minimum nonzero value to the backend */ 3987 * already-expired timers, so we should not sleep, or we have timers
3988 * that expire very soon, in which case we need to wait for a minimum
3989 * amount of time for some event loop backends.
3990 */
3498 if (expect_false (waittime < backend_mintime)) 3991 if (ecb_expect_false (waittime < backend_mintime))
3992 waittime = waittime <= EV_TS_CONST (0.)
3993 ? EV_TS_CONST (0.)
3499 waittime = backend_mintime; 3994 : backend_mintime;
3500 3995
3501 /* extra check because io_blocktime is commonly 0 */ 3996 /* extra check because io_blocktime is commonly 0 */
3502 if (expect_false (io_blocktime)) 3997 if (ecb_expect_false (io_blocktime))
3503 { 3998 {
3504 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3999 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3505 4000
3506 if (sleeptime > waittime - backend_mintime) 4001 if (sleeptime > waittime - backend_mintime)
3507 sleeptime = waittime - backend_mintime; 4002 sleeptime = waittime - backend_mintime;
3508 4003
3509 if (expect_true (sleeptime > 0.)) 4004 if (ecb_expect_true (sleeptime > EV_TS_CONST (0.)))
3510 { 4005 {
3511 ev_sleep (sleeptime); 4006 ev_sleep (sleeptime);
3512 waittime -= sleeptime; 4007 waittime -= sleeptime;
3513 } 4008 }
3514 } 4009 }
… …
3528 { 4023 {
3529 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 4024 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3530 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 4025 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3531 } 4026 }
3532 4027
3533
3534 /* update ev_rt_now, do magic */ 4028 /* update ev_rt_now, do magic */
3535 time_update (EV_A_ waittime + sleeptime); 4029 time_update (EV_A_ waittime + sleeptime);
3536 } 4030 }
3537 4031
3538 /* queue pending timers and reschedule them */ 4032 /* queue pending timers and reschedule them */
… …
3546 idle_reify (EV_A); 4040 idle_reify (EV_A);
3547#endif 4041#endif
3548 4042
3549#if EV_CHECK_ENABLE 4043#if EV_CHECK_ENABLE
3550 /* queue check watchers, to be executed first */ 4044 /* queue check watchers, to be executed first */
3551 if (expect_false (checkcnt)) 4045 if (ecb_expect_false (checkcnt))
3552 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 4046 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3553#endif 4047#endif
3554 4048
3555 EV_INVOKE_PENDING; 4049 EV_INVOKE_PENDING;
3556 } 4050 }
3557 while (expect_true ( 4051 while (ecb_expect_true (
3558 activecnt 4052 activecnt
3559 && !loop_done 4053 && !loop_done
3560 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) 4054 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
3561 )); 4055 ));
3562 4056
… …
3569 4063
3570 return activecnt; 4064 return activecnt;
3571} 4065}
3572 4066
3573void 4067void
3574ev_break (EV_P_ int how) EV_THROW 4068ev_break (EV_P_ int how) EV_NOEXCEPT
3575{ 4069{
3576 loop_done = how; 4070 loop_done = how;
3577} 4071}
3578 4072
3579void 4073void
3580ev_ref (EV_P) EV_THROW 4074ev_ref (EV_P) EV_NOEXCEPT
3581{ 4075{
3582 ++activecnt; 4076 ++activecnt;
3583} 4077}
3584 4078
3585void 4079void
3586ev_unref (EV_P) EV_THROW 4080ev_unref (EV_P) EV_NOEXCEPT
3587{ 4081{
3588 --activecnt; 4082 --activecnt;
3589} 4083}
3590 4084
3591void 4085void
3592ev_now_update (EV_P) EV_THROW 4086ev_now_update (EV_P) EV_NOEXCEPT
3593{ 4087{
3594 time_update (EV_A_ 1e100); 4088 time_update (EV_A_ EV_TSTAMP_HUGE);
3595} 4089}
3596 4090
3597void 4091void
3598ev_suspend (EV_P) EV_THROW 4092ev_suspend (EV_P) EV_NOEXCEPT
3599{ 4093{
3600 ev_now_update (EV_A); 4094 ev_now_update (EV_A);
3601} 4095}
3602 4096
3603void 4097void
3604ev_resume (EV_P) EV_THROW 4098ev_resume (EV_P) EV_NOEXCEPT
3605{ 4099{
3606 ev_tstamp mn_prev = mn_now; 4100 ev_tstamp mn_prev = mn_now;
3607 4101
3608 ev_now_update (EV_A); 4102 ev_now_update (EV_A);
3609 timers_reschedule (EV_A_ mn_now - mn_prev); 4103 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
3626inline_size void 4120inline_size void
3627wlist_del (WL *head, WL elem) 4121wlist_del (WL *head, WL elem)
3628{ 4122{
3629 while (*head) 4123 while (*head)
3630 { 4124 {
3631 if (expect_true (*head == elem)) 4125 if (ecb_expect_true (*head == elem))
3632 { 4126 {
3633 *head = elem->next; 4127 *head = elem->next;
3634 break; 4128 break;
3635 } 4129 }
3636 4130
… …
3648 w->pending = 0; 4142 w->pending = 0;
3649 } 4143 }
3650} 4144}
3651 4145
3652int 4146int
3653ev_clear_pending (EV_P_ void *w) EV_THROW 4147ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
3654{ 4148{
3655 W w_ = (W)w; 4149 W w_ = (W)w;
3656 int pending = w_->pending; 4150 int pending = w_->pending;
3657 4151
3658 if (expect_true (pending)) 4152 if (ecb_expect_true (pending))
3659 { 4153 {
3660 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4154 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3661 p->w = (W)&pending_w; 4155 p->w = (W)&pending_w;
3662 w_->pending = 0; 4156 w_->pending = 0;
3663 return p->events; 4157 return p->events;
… …
3690 w->active = 0; 4184 w->active = 0;
3691} 4185}
3692 4186
3693/*****************************************************************************/ 4187/*****************************************************************************/
3694 4188
3695void noinline 4189ecb_noinline
4190void
3696ev_io_start (EV_P_ ev_io *w) EV_THROW 4191ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
3697{ 4192{
3698 int fd = w->fd; 4193 int fd = w->fd;
3699 4194
3700 if (expect_false (ev_is_active (w))) 4195 if (ecb_expect_false (ev_is_active (w)))
3701 return; 4196 return;
3702 4197
3703 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4198 assert (("libev: ev_io_start called with negative fd", fd >= 0));
3704 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 4199 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
3705 4200
4201#if EV_VERIFY >= 2
4202 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4203#endif
3706 EV_FREQUENT_CHECK; 4204 EV_FREQUENT_CHECK;
3707 4205
3708 ev_start (EV_A_ (W)w, 1); 4206 ev_start (EV_A_ (W)w, 1);
3709 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4207 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
3710 wlist_add (&anfds[fd].head, (WL)w); 4208 wlist_add (&anfds[fd].head, (WL)w);
3711 4209
3712 /* common bug, apparently */ 4210 /* common bug, apparently */
3713 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w)); 4211 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3714 4212
… …
3716 w->events &= ~EV__IOFDSET; 4214 w->events &= ~EV__IOFDSET;
3717 4215
3718 EV_FREQUENT_CHECK; 4216 EV_FREQUENT_CHECK;
3719} 4217}
3720 4218
3721void noinline 4219ecb_noinline
4220void
3722ev_io_stop (EV_P_ ev_io *w) EV_THROW 4221ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
3723{ 4222{
3724 clear_pending (EV_A_ (W)w); 4223 clear_pending (EV_A_ (W)w);
3725 if (expect_false (!ev_is_active (w))) 4224 if (ecb_expect_false (!ev_is_active (w)))
3726 return; 4225 return;
3727 4226
3728 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4227 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
3729 4228
4229#if EV_VERIFY >= 2
4230 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4231#endif
3730 EV_FREQUENT_CHECK; 4232 EV_FREQUENT_CHECK;
3731 4233
3732 wlist_del (&anfds[w->fd].head, (WL)w); 4234 wlist_del (&anfds[w->fd].head, (WL)w);
3733 ev_stop (EV_A_ (W)w); 4235 ev_stop (EV_A_ (W)w);
3734 4236
3735 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 4237 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3736 4238
3737 EV_FREQUENT_CHECK; 4239 EV_FREQUENT_CHECK;
3738} 4240}
3739 4241
3740void noinline 4242ecb_noinline
4243void
3741ev_timer_start (EV_P_ ev_timer *w) EV_THROW 4244ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
3742{ 4245{
3743 if (expect_false (ev_is_active (w))) 4246 if (ecb_expect_false (ev_is_active (w)))
3744 return; 4247 return;
3745 4248
3746 ev_at (w) += mn_now; 4249 ev_at (w) += mn_now;
3747 4250
3748 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4251 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
3749 4252
3750 EV_FREQUENT_CHECK; 4253 EV_FREQUENT_CHECK;
3751 4254
3752 ++timercnt; 4255 ++timercnt;
3753 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4256 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
3754 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4257 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
3755 ANHE_w (timers [ev_active (w)]) = (WT)w; 4258 ANHE_w (timers [ev_active (w)]) = (WT)w;
3756 ANHE_at_cache (timers [ev_active (w)]); 4259 ANHE_at_cache (timers [ev_active (w)]);
3757 upheap (timers, ev_active (w)); 4260 upheap (timers, ev_active (w));
3758 4261
3759 EV_FREQUENT_CHECK; 4262 EV_FREQUENT_CHECK;
3760 4263
3761 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4264 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
3762} 4265}
3763 4266
3764void noinline 4267ecb_noinline
4268void
3765ev_timer_stop (EV_P_ ev_timer *w) EV_THROW 4269ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
3766{ 4270{
3767 clear_pending (EV_A_ (W)w); 4271 clear_pending (EV_A_ (W)w);
3768 if (expect_false (!ev_is_active (w))) 4272 if (ecb_expect_false (!ev_is_active (w)))
3769 return; 4273 return;
3770 4274
3771 EV_FREQUENT_CHECK; 4275 EV_FREQUENT_CHECK;
3772 4276
3773 { 4277 {
… …
3775 4279
3776 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4280 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
3777 4281
3778 --timercnt; 4282 --timercnt;
3779 4283
3780 if (expect_true (active < timercnt + HEAP0)) 4284 if (ecb_expect_true (active < timercnt + HEAP0))
3781 { 4285 {
3782 timers [active] = timers [timercnt + HEAP0]; 4286 timers [active] = timers [timercnt + HEAP0];
3783 adjustheap (timers, timercnt, active); 4287 adjustheap (timers, timercnt, active);
3784 } 4288 }
3785 } 4289 }
… …
3789 ev_stop (EV_A_ (W)w); 4293 ev_stop (EV_A_ (W)w);
3790 4294
3791 EV_FREQUENT_CHECK; 4295 EV_FREQUENT_CHECK;
3792} 4296}
3793 4297
3794void noinline 4298ecb_noinline
4299void
3795ev_timer_again (EV_P_ ev_timer *w) EV_THROW 4300ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
3796{ 4301{
3797 EV_FREQUENT_CHECK; 4302 EV_FREQUENT_CHECK;
3798 4303
3799 clear_pending (EV_A_ (W)w); 4304 clear_pending (EV_A_ (W)w);
3800 4305
… …
3817 4322
3818 EV_FREQUENT_CHECK; 4323 EV_FREQUENT_CHECK;
3819} 4324}
3820 4325
3821ev_tstamp 4326ev_tstamp
3822ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW 4327ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
3823{ 4328{
3824 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4329 return ev_at (w) - (ev_is_active (w) ? mn_now : EV_TS_CONST (0.));
3825} 4330}
3826 4331
3827#if EV_PERIODIC_ENABLE 4332#if EV_PERIODIC_ENABLE
3828void noinline 4333ecb_noinline
4334void
3829ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW 4335ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
3830{ 4336{
3831 if (expect_false (ev_is_active (w))) 4337 if (ecb_expect_false (ev_is_active (w)))
3832 return; 4338 return;
4339
4340#if EV_USE_TIMERFD
4341 if (timerfd == -2)
4342 evtimerfd_init (EV_A);
4343#endif
3833 4344
3834 if (w->reschedule_cb) 4345 if (w->reschedule_cb)
3835 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4346 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
3836 else if (w->interval) 4347 else if (w->interval)
3837 { 4348 {
… …
3843 4354
3844 EV_FREQUENT_CHECK; 4355 EV_FREQUENT_CHECK;
3845 4356
3846 ++periodiccnt; 4357 ++periodiccnt;
3847 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4358 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
3848 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4359 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
3849 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4360 ANHE_w (periodics [ev_active (w)]) = (WT)w;
3850 ANHE_at_cache (periodics [ev_active (w)]); 4361 ANHE_at_cache (periodics [ev_active (w)]);
3851 upheap (periodics, ev_active (w)); 4362 upheap (periodics, ev_active (w));
3852 4363
3853 EV_FREQUENT_CHECK; 4364 EV_FREQUENT_CHECK;
3854 4365
3855 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4366 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
3856} 4367}
3857 4368
3858void noinline 4369ecb_noinline
4370void
3859ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW 4371ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
3860{ 4372{
3861 clear_pending (EV_A_ (W)w); 4373 clear_pending (EV_A_ (W)w);
3862 if (expect_false (!ev_is_active (w))) 4374 if (ecb_expect_false (!ev_is_active (w)))
3863 return; 4375 return;
3864 4376
3865 EV_FREQUENT_CHECK; 4377 EV_FREQUENT_CHECK;
3866 4378
3867 { 4379 {
… …
3869 4381
3870 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4382 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
3871 4383
3872 --periodiccnt; 4384 --periodiccnt;
3873 4385
3874 if (expect_true (active < periodiccnt + HEAP0)) 4386 if (ecb_expect_true (active < periodiccnt + HEAP0))
3875 { 4387 {
3876 periodics [active] = periodics [periodiccnt + HEAP0]; 4388 periodics [active] = periodics [periodiccnt + HEAP0];
3877 adjustheap (periodics, periodiccnt, active); 4389 adjustheap (periodics, periodiccnt, active);
3878 } 4390 }
3879 } 4391 }
… …
3881 ev_stop (EV_A_ (W)w); 4393 ev_stop (EV_A_ (W)w);
3882 4394
3883 EV_FREQUENT_CHECK; 4395 EV_FREQUENT_CHECK;
3884} 4396}
3885 4397
3886void noinline 4398ecb_noinline
4399void
3887ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW 4400ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
3888{ 4401{
3889 /* TODO: use adjustheap and recalculation */ 4402 /* TODO: use adjustheap and recalculation */
3890 ev_periodic_stop (EV_A_ w); 4403 ev_periodic_stop (EV_A_ w);
3891 ev_periodic_start (EV_A_ w); 4404 ev_periodic_start (EV_A_ w);
3892} 4405}
… …
3896# define SA_RESTART 0 4409# define SA_RESTART 0
3897#endif 4410#endif
3898 4411
3899#if EV_SIGNAL_ENABLE 4412#if EV_SIGNAL_ENABLE
3900 4413
3901void noinline 4414ecb_noinline
4415void
3902ev_signal_start (EV_P_ ev_signal *w) EV_THROW 4416ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
3903{ 4417{
3904 if (expect_false (ev_is_active (w))) 4418 if (ecb_expect_false (ev_is_active (w)))
3905 return; 4419 return;
3906 4420
3907 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4421 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
3908 4422
3909#if EV_MULTIPLICITY 4423#if EV_MULTIPLICITY
… …
3978 } 4492 }
3979 4493
3980 EV_FREQUENT_CHECK; 4494 EV_FREQUENT_CHECK;
3981} 4495}
3982 4496
3983void noinline 4497ecb_noinline
4498void
3984ev_signal_stop (EV_P_ ev_signal *w) EV_THROW 4499ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
3985{ 4500{
3986 clear_pending (EV_A_ (W)w); 4501 clear_pending (EV_A_ (W)w);
3987 if (expect_false (!ev_is_active (w))) 4502 if (ecb_expect_false (!ev_is_active (w)))
3988 return; 4503 return;
3989 4504
3990 EV_FREQUENT_CHECK; 4505 EV_FREQUENT_CHECK;
3991 4506
3992 wlist_del (&signals [w->signum - 1].head, (WL)w); 4507 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
4020#endif 4535#endif
4021 4536
4022#if EV_CHILD_ENABLE 4537#if EV_CHILD_ENABLE
4023 4538
4024void 4539void
4025ev_child_start (EV_P_ ev_child *w) EV_THROW 4540ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
4026{ 4541{
4027#if EV_MULTIPLICITY 4542#if EV_MULTIPLICITY
4028 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4543 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
4029#endif 4544#endif
4030 if (expect_false (ev_is_active (w))) 4545 if (ecb_expect_false (ev_is_active (w)))
4031 return; 4546 return;
4032 4547
4033 EV_FREQUENT_CHECK; 4548 EV_FREQUENT_CHECK;
4034 4549
4035 ev_start (EV_A_ (W)w, 1); 4550 ev_start (EV_A_ (W)w, 1);
… …
4037 4552
4038 EV_FREQUENT_CHECK; 4553 EV_FREQUENT_CHECK;
4039} 4554}
4040 4555
4041void 4556void
4042ev_child_stop (EV_P_ ev_child *w) EV_THROW 4557ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
4043{ 4558{
4044 clear_pending (EV_A_ (W)w); 4559 clear_pending (EV_A_ (W)w);
4045 if (expect_false (!ev_is_active (w))) 4560 if (ecb_expect_false (!ev_is_active (w)))
4046 return; 4561 return;
4047 4562
4048 EV_FREQUENT_CHECK; 4563 EV_FREQUENT_CHECK;
4049 4564
4050 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); 4565 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
… …
4064 4579
4065#define DEF_STAT_INTERVAL 5.0074891 4580#define DEF_STAT_INTERVAL 5.0074891
4066#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4581#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
4067#define MIN_STAT_INTERVAL 0.1074891 4582#define MIN_STAT_INTERVAL 0.1074891
4068 4583
4069static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4584ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
4070 4585
4071#if EV_USE_INOTIFY 4586#if EV_USE_INOTIFY
4072 4587
4073/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4588/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
4074# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4589# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
4075 4590
4076static void noinline 4591ecb_noinline
4592static void
4077infy_add (EV_P_ ev_stat *w) 4593infy_add (EV_P_ ev_stat *w)
4078{ 4594{
4079 w->wd = inotify_add_watch (fs_fd, w->path, 4595 w->wd = inotify_add_watch (fs_fd, w->path,
4080 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY 4596 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4081 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO 4597 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
… …
4145 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4661 if (ev_is_active (&w->timer)) ev_ref (EV_A);
4146 ev_timer_again (EV_A_ &w->timer); 4662 ev_timer_again (EV_A_ &w->timer);
4147 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4663 if (ev_is_active (&w->timer)) ev_unref (EV_A);
4148} 4664}
4149 4665
4150static void noinline 4666ecb_noinline
4667static void
4151infy_del (EV_P_ ev_stat *w) 4668infy_del (EV_P_ ev_stat *w)
4152{ 4669{
4153 int slot; 4670 int slot;
4154 int wd = w->wd; 4671 int wd = w->wd;
4155 4672
… …
4162 4679
4163 /* remove this watcher, if others are watching it, they will rearm */ 4680 /* remove this watcher, if others are watching it, they will rearm */
4164 inotify_rm_watch (fs_fd, wd); 4681 inotify_rm_watch (fs_fd, wd);
4165} 4682}
4166 4683
4167static void noinline 4684ecb_noinline
4685static void
4168infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4686infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
4169{ 4687{
4170 if (slot < 0) 4688 if (slot < 0)
4171 /* overflow, need to check for all hash slots */ 4689 /* overflow, need to check for all hash slots */
4172 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4690 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
4208 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4726 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4209 ofs += sizeof (struct inotify_event) + ev->len; 4727 ofs += sizeof (struct inotify_event) + ev->len;
4210 } 4728 }
4211} 4729}
4212 4730
4213inline_size void ecb_cold 4731inline_size ecb_cold
4732void
4214ev_check_2625 (EV_P) 4733ev_check_2625 (EV_P)
4215{ 4734{
4216 /* kernels < 2.6.25 are borked 4735 /* kernels < 2.6.25 are borked
4217 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4736 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
4218 */ 4737 */
… …
4308#else 4827#else
4309# define EV_LSTAT(p,b) lstat (p, b) 4828# define EV_LSTAT(p,b) lstat (p, b)
4310#endif 4829#endif
4311 4830
4312void 4831void
4313ev_stat_stat (EV_P_ ev_stat *w) EV_THROW 4832ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
4314{ 4833{
4315 if (lstat (w->path, &w->attr) < 0) 4834 if (lstat (w->path, &w->attr) < 0)
4316 w->attr.st_nlink = 0; 4835 w->attr.st_nlink = 0;
4317 else if (!w->attr.st_nlink) 4836 else if (!w->attr.st_nlink)
4318 w->attr.st_nlink = 1; 4837 w->attr.st_nlink = 1;
4319} 4838}
4320 4839
4321static void noinline 4840ecb_noinline
4841static void
4322stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4842stat_timer_cb (EV_P_ ev_timer *w_, int revents)
4323{ 4843{
4324 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4844 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
4325 4845
4326 ev_statdata prev = w->attr; 4846 ev_statdata prev = w->attr;
… …
4357 ev_feed_event (EV_A_ w, EV_STAT); 4877 ev_feed_event (EV_A_ w, EV_STAT);
4358 } 4878 }
4359} 4879}
4360 4880
4361void 4881void
4362ev_stat_start (EV_P_ ev_stat *w) EV_THROW 4882ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
4363{ 4883{
4364 if (expect_false (ev_is_active (w))) 4884 if (ecb_expect_false (ev_is_active (w)))
4365 return; 4885 return;
4366 4886
4367 ev_stat_stat (EV_A_ w); 4887 ev_stat_stat (EV_A_ w);
4368 4888
4369 if (w->interval < MIN_STAT_INTERVAL && w->interval) 4889 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
4388 4908
4389 EV_FREQUENT_CHECK; 4909 EV_FREQUENT_CHECK;
4390} 4910}
4391 4911
4392void 4912void
4393ev_stat_stop (EV_P_ ev_stat *w) EV_THROW 4913ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
4394{ 4914{
4395 clear_pending (EV_A_ (W)w); 4915 clear_pending (EV_A_ (W)w);
4396 if (expect_false (!ev_is_active (w))) 4916 if (ecb_expect_false (!ev_is_active (w)))
4397 return; 4917 return;
4398 4918
4399 EV_FREQUENT_CHECK; 4919 EV_FREQUENT_CHECK;
4400 4920
4401#if EV_USE_INOTIFY 4921#if EV_USE_INOTIFY
… …
4414} 4934}
4415#endif 4935#endif
4416 4936
4417#if EV_IDLE_ENABLE 4937#if EV_IDLE_ENABLE
4418void 4938void
4419ev_idle_start (EV_P_ ev_idle *w) EV_THROW 4939ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
4420{ 4940{
4421 if (expect_false (ev_is_active (w))) 4941 if (ecb_expect_false (ev_is_active (w)))
4422 return; 4942 return;
4423 4943
4424 pri_adjust (EV_A_ (W)w); 4944 pri_adjust (EV_A_ (W)w);
4425 4945
4426 EV_FREQUENT_CHECK; 4946 EV_FREQUENT_CHECK;
… …
4429 int active = ++idlecnt [ABSPRI (w)]; 4949 int active = ++idlecnt [ABSPRI (w)];
4430 4950
4431 ++idleall; 4951 ++idleall;
4432 ev_start (EV_A_ (W)w, active); 4952 ev_start (EV_A_ (W)w, active);
4433 4953
4434 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4954 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
4435 idles [ABSPRI (w)][active - 1] = w; 4955 idles [ABSPRI (w)][active - 1] = w;
4436 } 4956 }
4437 4957
4438 EV_FREQUENT_CHECK; 4958 EV_FREQUENT_CHECK;
4439} 4959}
4440 4960
4441void 4961void
4442ev_idle_stop (EV_P_ ev_idle *w) EV_THROW 4962ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
4443{ 4963{
4444 clear_pending (EV_A_ (W)w); 4964 clear_pending (EV_A_ (W)w);
4445 if (expect_false (!ev_is_active (w))) 4965 if (ecb_expect_false (!ev_is_active (w)))
4446 return; 4966 return;
4447 4967
4448 EV_FREQUENT_CHECK; 4968 EV_FREQUENT_CHECK;
4449 4969
4450 { 4970 {
… …
4461} 4981}
4462#endif 4982#endif
4463 4983
4464#if EV_PREPARE_ENABLE 4984#if EV_PREPARE_ENABLE
4465void 4985void
4466ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW 4986ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
4467{ 4987{
4468 if (expect_false (ev_is_active (w))) 4988 if (ecb_expect_false (ev_is_active (w)))
4469 return; 4989 return;
4470 4990
4471 EV_FREQUENT_CHECK; 4991 EV_FREQUENT_CHECK;
4472 4992
4473 ev_start (EV_A_ (W)w, ++preparecnt); 4993 ev_start (EV_A_ (W)w, ++preparecnt);
4474 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4994 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
4475 prepares [preparecnt - 1] = w; 4995 prepares [preparecnt - 1] = w;
4476 4996
4477 EV_FREQUENT_CHECK; 4997 EV_FREQUENT_CHECK;
4478} 4998}
4479 4999
4480void 5000void
4481ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW 5001ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
4482{ 5002{
4483 clear_pending (EV_A_ (W)w); 5003 clear_pending (EV_A_ (W)w);
4484 if (expect_false (!ev_is_active (w))) 5004 if (ecb_expect_false (!ev_is_active (w)))
4485 return; 5005 return;
4486 5006
4487 EV_FREQUENT_CHECK; 5007 EV_FREQUENT_CHECK;
4488 5008
4489 { 5009 {
… …
4499} 5019}
4500#endif 5020#endif
4501 5021
4502#if EV_CHECK_ENABLE 5022#if EV_CHECK_ENABLE
4503void 5023void
4504ev_check_start (EV_P_ ev_check *w) EV_THROW 5024ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
4505{ 5025{
4506 if (expect_false (ev_is_active (w))) 5026 if (ecb_expect_false (ev_is_active (w)))
4507 return; 5027 return;
4508 5028
4509 EV_FREQUENT_CHECK; 5029 EV_FREQUENT_CHECK;
4510 5030
4511 ev_start (EV_A_ (W)w, ++checkcnt); 5031 ev_start (EV_A_ (W)w, ++checkcnt);
4512 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 5032 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
4513 checks [checkcnt - 1] = w; 5033 checks [checkcnt - 1] = w;
4514 5034
4515 EV_FREQUENT_CHECK; 5035 EV_FREQUENT_CHECK;
4516} 5036}
4517 5037
4518void 5038void
4519ev_check_stop (EV_P_ ev_check *w) EV_THROW 5039ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
4520{ 5040{
4521 clear_pending (EV_A_ (W)w); 5041 clear_pending (EV_A_ (W)w);
4522 if (expect_false (!ev_is_active (w))) 5042 if (ecb_expect_false (!ev_is_active (w)))
4523 return; 5043 return;
4524 5044
4525 EV_FREQUENT_CHECK; 5045 EV_FREQUENT_CHECK;
4526 5046
4527 { 5047 {
… …
4536 EV_FREQUENT_CHECK; 5056 EV_FREQUENT_CHECK;
4537} 5057}
4538#endif 5058#endif
4539 5059
4540#if EV_EMBED_ENABLE 5060#if EV_EMBED_ENABLE
4541void noinline 5061ecb_noinline
5062void
4542ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW 5063ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
4543{ 5064{
4544 ev_run (w->other, EVRUN_NOWAIT); 5065 ev_run (w->other, EVRUN_NOWAIT);
4545} 5066}
4546 5067
4547static void 5068static void
… …
4569 ev_run (EV_A_ EVRUN_NOWAIT); 5090 ev_run (EV_A_ EVRUN_NOWAIT);
4570 } 5091 }
4571 } 5092 }
4572} 5093}
4573 5094
5095#if EV_FORK_ENABLE
4574static void 5096static void
4575embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 5097embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
4576{ 5098{
4577 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 5099 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
4578 5100
… …
4585 ev_run (EV_A_ EVRUN_NOWAIT); 5107 ev_run (EV_A_ EVRUN_NOWAIT);
4586 } 5108 }
4587 5109
4588 ev_embed_start (EV_A_ w); 5110 ev_embed_start (EV_A_ w);
4589} 5111}
5112#endif
4590 5113
4591#if 0 5114#if 0
4592static void 5115static void
4593embed_idle_cb (EV_P_ ev_idle *idle, int revents) 5116embed_idle_cb (EV_P_ ev_idle *idle, int revents)
4594{ 5117{
4595 ev_idle_stop (EV_A_ idle); 5118 ev_idle_stop (EV_A_ idle);
4596} 5119}
4597#endif 5120#endif
4598 5121
4599void 5122void
4600ev_embed_start (EV_P_ ev_embed *w) EV_THROW 5123ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
4601{ 5124{
4602 if (expect_false (ev_is_active (w))) 5125 if (ecb_expect_false (ev_is_active (w)))
4603 return; 5126 return;
4604 5127
4605 { 5128 {
4606 EV_P = w->other; 5129 EV_P = w->other;
4607 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 5130 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
… …
4615 5138
4616 ev_prepare_init (&w->prepare, embed_prepare_cb); 5139 ev_prepare_init (&w->prepare, embed_prepare_cb);
4617 ev_set_priority (&w->prepare, EV_MINPRI); 5140 ev_set_priority (&w->prepare, EV_MINPRI);
4618 ev_prepare_start (EV_A_ &w->prepare); 5141 ev_prepare_start (EV_A_ &w->prepare);
4619 5142
5143#if EV_FORK_ENABLE
4620 ev_fork_init (&w->fork, embed_fork_cb); 5144 ev_fork_init (&w->fork, embed_fork_cb);
4621 ev_fork_start (EV_A_ &w->fork); 5145 ev_fork_start (EV_A_ &w->fork);
5146#endif
4622 5147
4623 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 5148 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
4624 5149
4625 ev_start (EV_A_ (W)w, 1); 5150 ev_start (EV_A_ (W)w, 1);
4626 5151
4627 EV_FREQUENT_CHECK; 5152 EV_FREQUENT_CHECK;
4628} 5153}
4629 5154
4630void 5155void
4631ev_embed_stop (EV_P_ ev_embed *w) EV_THROW 5156ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
4632{ 5157{
4633 clear_pending (EV_A_ (W)w); 5158 clear_pending (EV_A_ (W)w);
4634 if (expect_false (!ev_is_active (w))) 5159 if (ecb_expect_false (!ev_is_active (w)))
4635 return; 5160 return;
4636 5161
4637 EV_FREQUENT_CHECK; 5162 EV_FREQUENT_CHECK;
4638 5163
4639 ev_io_stop (EV_A_ &w->io); 5164 ev_io_stop (EV_A_ &w->io);
4640 ev_prepare_stop (EV_A_ &w->prepare); 5165 ev_prepare_stop (EV_A_ &w->prepare);
5166#if EV_FORK_ENABLE
4641 ev_fork_stop (EV_A_ &w->fork); 5167 ev_fork_stop (EV_A_ &w->fork);
5168#endif
4642 5169
4643 ev_stop (EV_A_ (W)w); 5170 ev_stop (EV_A_ (W)w);
4644 5171
4645 EV_FREQUENT_CHECK; 5172 EV_FREQUENT_CHECK;
4646} 5173}
4647#endif 5174#endif
4648 5175
4649#if EV_FORK_ENABLE 5176#if EV_FORK_ENABLE
4650void 5177void
4651ev_fork_start (EV_P_ ev_fork *w) EV_THROW 5178ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
4652{ 5179{
4653 if (expect_false (ev_is_active (w))) 5180 if (ecb_expect_false (ev_is_active (w)))
4654 return; 5181 return;
4655 5182
4656 EV_FREQUENT_CHECK; 5183 EV_FREQUENT_CHECK;
4657 5184
4658 ev_start (EV_A_ (W)w, ++forkcnt); 5185 ev_start (EV_A_ (W)w, ++forkcnt);
4659 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5186 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
4660 forks [forkcnt - 1] = w; 5187 forks [forkcnt - 1] = w;
4661 5188
4662 EV_FREQUENT_CHECK; 5189 EV_FREQUENT_CHECK;
4663} 5190}
4664 5191
4665void 5192void
4666ev_fork_stop (EV_P_ ev_fork *w) EV_THROW 5193ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
4667{ 5194{
4668 clear_pending (EV_A_ (W)w); 5195 clear_pending (EV_A_ (W)w);
4669 if (expect_false (!ev_is_active (w))) 5196 if (ecb_expect_false (!ev_is_active (w)))
4670 return; 5197 return;
4671 5198
4672 EV_FREQUENT_CHECK; 5199 EV_FREQUENT_CHECK;
4673 5200
4674 { 5201 {
… …
4684} 5211}
4685#endif 5212#endif
4686 5213
4687#if EV_CLEANUP_ENABLE 5214#if EV_CLEANUP_ENABLE
4688void 5215void
4689ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW 5216ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4690{ 5217{
4691 if (expect_false (ev_is_active (w))) 5218 if (ecb_expect_false (ev_is_active (w)))
4692 return; 5219 return;
4693 5220
4694 EV_FREQUENT_CHECK; 5221 EV_FREQUENT_CHECK;
4695 5222
4696 ev_start (EV_A_ (W)w, ++cleanupcnt); 5223 ev_start (EV_A_ (W)w, ++cleanupcnt);
4697 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 5224 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
4698 cleanups [cleanupcnt - 1] = w; 5225 cleanups [cleanupcnt - 1] = w;
4699 5226
4700 /* cleanup watchers should never keep a refcount on the loop */ 5227 /* cleanup watchers should never keep a refcount on the loop */
4701 ev_unref (EV_A); 5228 ev_unref (EV_A);
4702 EV_FREQUENT_CHECK; 5229 EV_FREQUENT_CHECK;
4703} 5230}
4704 5231
4705void 5232void
4706ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW 5233ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4707{ 5234{
4708 clear_pending (EV_A_ (W)w); 5235 clear_pending (EV_A_ (W)w);
4709 if (expect_false (!ev_is_active (w))) 5236 if (ecb_expect_false (!ev_is_active (w)))
4710 return; 5237 return;
4711 5238
4712 EV_FREQUENT_CHECK; 5239 EV_FREQUENT_CHECK;
4713 ev_ref (EV_A); 5240 ev_ref (EV_A);
4714 5241
… …
4725} 5252}
4726#endif 5253#endif
4727 5254
4728#if EV_ASYNC_ENABLE 5255#if EV_ASYNC_ENABLE
4729void 5256void
4730ev_async_start (EV_P_ ev_async *w) EV_THROW 5257ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4731{ 5258{
4732 if (expect_false (ev_is_active (w))) 5259 if (ecb_expect_false (ev_is_active (w)))
4733 return; 5260 return;
4734 5261
4735 w->sent = 0; 5262 w->sent = 0;
4736 5263
4737 evpipe_init (EV_A); 5264 evpipe_init (EV_A);
4738 5265
4739 EV_FREQUENT_CHECK; 5266 EV_FREQUENT_CHECK;
4740 5267
4741 ev_start (EV_A_ (W)w, ++asynccnt); 5268 ev_start (EV_A_ (W)w, ++asynccnt);
4742 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5269 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
4743 asyncs [asynccnt - 1] = w; 5270 asyncs [asynccnt - 1] = w;
4744 5271
4745 EV_FREQUENT_CHECK; 5272 EV_FREQUENT_CHECK;
4746} 5273}
4747 5274
4748void 5275void
4749ev_async_stop (EV_P_ ev_async *w) EV_THROW 5276ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4750{ 5277{
4751 clear_pending (EV_A_ (W)w); 5278 clear_pending (EV_A_ (W)w);
4752 if (expect_false (!ev_is_active (w))) 5279 if (ecb_expect_false (!ev_is_active (w)))
4753 return; 5280 return;
4754 5281
4755 EV_FREQUENT_CHECK; 5282 EV_FREQUENT_CHECK;
4756 5283
4757 { 5284 {
… …
4765 5292
4766 EV_FREQUENT_CHECK; 5293 EV_FREQUENT_CHECK;
4767} 5294}
4768 5295
4769void 5296void
4770ev_async_send (EV_P_ ev_async *w) EV_THROW 5297ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
4771{ 5298{
4772 w->sent = 1; 5299 w->sent = 1;
4773 evpipe_write (EV_A_ &async_pending); 5300 evpipe_write (EV_A_ &async_pending);
4774} 5301}
4775#endif 5302#endif
… …
4812 5339
4813 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5340 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
4814} 5341}
4815 5342
4816void 5343void
4817ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW 5344ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
4818{ 5345{
4819 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5346 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
4820
4821 if (expect_false (!once))
4822 {
4823 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
4824 return;
4825 }
4826 5347
4827 once->cb = cb; 5348 once->cb = cb;
4828 once->arg = arg; 5349 once->arg = arg;
4829 5350
4830 ev_init (&once->io, once_cb_io); 5351 ev_init (&once->io, once_cb_io);
… …
4843} 5364}
4844 5365
4845/*****************************************************************************/ 5366/*****************************************************************************/
4846 5367
4847#if EV_WALK_ENABLE 5368#if EV_WALK_ENABLE
4848void ecb_cold 5369ecb_cold
5370void
4849ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW 5371ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
4850{ 5372{
4851 int i, j; 5373 int i, j;
4852 ev_watcher_list *wl, *wn; 5374 ev_watcher_list *wl, *wn;
4853 5375
4854 if (types & (EV_IO | EV_EMBED)) 5376 if (types & (EV_IO | EV_EMBED))

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