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Comparing libev/ev.c (file contents):
Revision 1.474 by root, Wed Feb 11 19:20:21 2015 UTC vs.
Revision 1.523 by root, Tue Jan 21 23:52:35 2020 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) */
584#define MAX_BLOCKTIME2 1500001.07 /* same, but when timerfd is used to detect jumps, also safe delay to not overflow */
487 585
586/* find a portable timestamp that is "always" in the future but fits into time_t.
587 * this is quite hard, and we are mostly guessing - we handle 32 bit signed/unsigned time_t,
588 * and sizes larger than 32 bit, and maybe the unlikely floating point time_t */
589#define EV_TSTAMP_HUGE \
590 (sizeof (time_t) >= 8 ? 10000000000000. \
591 : 0 < (time_t)4294967295 ? 4294967295. \
592 : 2147483647.) \
593
594#ifndef EV_TS_CONST
595# define EV_TS_CONST(nv) nv
596# define EV_TS_TO_MSEC(a) a * 1e3 + 0.9999
597# 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) 598# 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) 599# define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
600# define EV_TV_GET(tv) ((tv).tv_sec + (tv).tv_usec * 1e-6)
601# define EV_TS_GET(ts) ((ts).tv_sec + (ts).tv_nsec * 1e-9)
602#endif
490 603
491/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ 604/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
492/* ECB.H BEGIN */ 605/* ECB.H BEGIN */
493/* 606/*
494 * libecb - http://software.schmorp.de/pkg/libecb 607 * libecb - http://software.schmorp.de/pkg/libecb
… …
532 645
533#ifndef ECB_H 646#ifndef ECB_H
534#define ECB_H 647#define ECB_H
535 648
536/* 16 bits major, 16 bits minor */ 649/* 16 bits major, 16 bits minor */
537#define ECB_VERSION 0x00010004 650#define ECB_VERSION 0x00010008
651
652#include <string.h> /* for memcpy */
538 653
539#ifdef _WIN32 654#ifdef _WIN32
540 typedef signed char int8_t; 655 typedef signed char int8_t;
541 typedef unsigned char uint8_t; 656 typedef unsigned char uint8_t;
657 typedef signed char int_fast8_t;
658 typedef unsigned char uint_fast8_t;
542 typedef signed short int16_t; 659 typedef signed short int16_t;
543 typedef unsigned short uint16_t; 660 typedef unsigned short uint16_t;
661 typedef signed int int_fast16_t;
662 typedef unsigned int uint_fast16_t;
544 typedef signed int int32_t; 663 typedef signed int int32_t;
545 typedef unsigned int uint32_t; 664 typedef unsigned int uint32_t;
665 typedef signed int int_fast32_t;
666 typedef unsigned int uint_fast32_t;
546 #if __GNUC__ 667 #if __GNUC__
547 typedef signed long long int64_t; 668 typedef signed long long int64_t;
548 typedef unsigned long long uint64_t; 669 typedef unsigned long long uint64_t;
549 #else /* _MSC_VER || __BORLANDC__ */ 670 #else /* _MSC_VER || __BORLANDC__ */
550 typedef signed __int64 int64_t; 671 typedef signed __int64 int64_t;
551 typedef unsigned __int64 uint64_t; 672 typedef unsigned __int64 uint64_t;
552 #endif 673 #endif
674 typedef int64_t int_fast64_t;
675 typedef uint64_t uint_fast64_t;
553 #ifdef _WIN64 676 #ifdef _WIN64
554 #define ECB_PTRSIZE 8 677 #define ECB_PTRSIZE 8
555 typedef uint64_t uintptr_t; 678 typedef uint64_t uintptr_t;
556 typedef int64_t intptr_t; 679 typedef int64_t intptr_t;
557 #else 680 #else
… …
559 typedef uint32_t uintptr_t; 682 typedef uint32_t uintptr_t;
560 typedef int32_t intptr_t; 683 typedef int32_t intptr_t;
561 #endif 684 #endif
562#else 685#else
563 #include <inttypes.h> 686 #include <inttypes.h>
564 #if UINTMAX_MAX > 0xffffffffU 687 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
565 #define ECB_PTRSIZE 8 688 #define ECB_PTRSIZE 8
566 #else 689 #else
567 #define ECB_PTRSIZE 4 690 #define ECB_PTRSIZE 4
568 #endif 691 #endif
569#endif 692#endif
570 693
694#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
695#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
696
697#ifndef ECB_OPTIMIZE_SIZE
698 #if __OPTIMIZE_SIZE__
699 #define ECB_OPTIMIZE_SIZE 1
700 #else
701 #define ECB_OPTIMIZE_SIZE 0
702 #endif
703#endif
704
571/* work around x32 idiocy by defining proper macros */ 705/* work around x32 idiocy by defining proper macros */
572#if __amd64 || __x86_64 || _M_AMD64 || _M_X64 706#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
573 #if _ILP32 707 #if _ILP32
574 #define ECB_AMD64_X32 1 708 #define ECB_AMD64_X32 1
575 #else 709 #else
576 #define ECB_AMD64 1 710 #define ECB_AMD64 1
577 #endif 711 #endif
… …
604 #define ECB_CLANG_EXTENSION(x) 0 738 #define ECB_CLANG_EXTENSION(x) 0
605#endif 739#endif
606 740
607#define ECB_CPP (__cplusplus+0) 741#define ECB_CPP (__cplusplus+0)
608#define ECB_CPP11 (__cplusplus >= 201103L) 742#define ECB_CPP11 (__cplusplus >= 201103L)
743#define ECB_CPP14 (__cplusplus >= 201402L)
744#define ECB_CPP17 (__cplusplus >= 201703L)
609 745
610#if ECB_CPP 746#if ECB_CPP
611 #define ECB_C 0 747 #define ECB_C 0
612 #define ECB_STDC_VERSION 0 748 #define ECB_STDC_VERSION 0
613#else 749#else
… …
615 #define ECB_STDC_VERSION __STDC_VERSION__ 751 #define ECB_STDC_VERSION __STDC_VERSION__
616#endif 752#endif
617 753
618#define ECB_C99 (ECB_STDC_VERSION >= 199901L) 754#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
619#define ECB_C11 (ECB_STDC_VERSION >= 201112L) 755#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
756#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
620 757
621#if ECB_CPP 758#if ECB_CPP
622 #define ECB_EXTERN_C extern "C" 759 #define ECB_EXTERN_C extern "C"
623 #define ECB_EXTERN_C_BEG ECB_EXTERN_C { 760 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
624 #define ECB_EXTERN_C_END } 761 #define ECB_EXTERN_C_END }
… …
639 776
640#if ECB_NO_SMP 777#if ECB_NO_SMP
641 #define ECB_MEMORY_FENCE do { } while (0) 778 #define ECB_MEMORY_FENCE do { } while (0)
642#endif 779#endif
643 780
781/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
782#if __xlC__ && ECB_CPP
783 #include <builtins.h>
784#endif
785
786#if 1400 <= _MSC_VER
787 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
788#endif
789
644#ifndef ECB_MEMORY_FENCE 790#ifndef ECB_MEMORY_FENCE
645 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 791 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
792 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
646 #if __i386 || __i386__ 793 #if __i386 || __i386__
647 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") 794 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
648 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") 795 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
649 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 796 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
650 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__ 797 #elif ECB_GCC_AMD64
651 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 798 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
652 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") 799 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
653 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 800 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
654 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 801 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
655 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 802 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
803 #elif defined __ARM_ARCH_2__ \
804 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
805 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
806 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
807 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
808 || defined __ARM_ARCH_5TEJ__
809 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
656 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \ 810 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
657 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ 811 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
812 || defined __ARM_ARCH_6T2__
658 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") 813 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
659 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \ 814 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
660 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__ 815 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
661 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") 816 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
662 #elif __aarch64__ 817 #elif __aarch64__
663 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory") 818 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
664 #elif (__sparc || __sparc__) && !__sparcv8 819 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
665 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory") 820 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
666 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") 821 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
667 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") 822 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
668 #elif defined __s390__ || defined __s390x__ 823 #elif defined __s390__ || defined __s390x__
669 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") 824 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
… …
692 #if ECB_GCC_VERSION(4,7) 847 #if ECB_GCC_VERSION(4,7)
693 /* see comment below (stdatomic.h) about the C11 memory model. */ 848 /* see comment below (stdatomic.h) about the C11 memory model. */
694 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST) 849 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
695 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE) 850 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
696 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE) 851 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
852 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
697 853
698 #elif ECB_CLANG_EXTENSION(c_atomic) 854 #elif ECB_CLANG_EXTENSION(c_atomic)
699 /* see comment below (stdatomic.h) about the C11 memory model. */ 855 /* see comment below (stdatomic.h) about the C11 memory model. */
700 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) 856 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
701 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE) 857 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
702 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE) 858 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
859 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
703 860
704 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ 861 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
705 #define ECB_MEMORY_FENCE __sync_synchronize () 862 #define ECB_MEMORY_FENCE __sync_synchronize ()
706 #elif _MSC_VER >= 1500 /* VC++ 2008 */ 863 #elif _MSC_VER >= 1500 /* VC++ 2008 */
707 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */ 864 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
… …
717 #elif defined _WIN32 874 #elif defined _WIN32
718 #include <WinNT.h> 875 #include <WinNT.h>
719 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ 876 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
720 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 877 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
721 #include <mbarrier.h> 878 #include <mbarrier.h>
722 #define ECB_MEMORY_FENCE __machine_rw_barrier () 879 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
723 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier () 880 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
724 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier () 881 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
882 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
725 #elif __xlC__ 883 #elif __xlC__
726 #define ECB_MEMORY_FENCE __sync () 884 #define ECB_MEMORY_FENCE __sync ()
727 #endif 885 #endif
728#endif 886#endif
729 887
730#ifndef ECB_MEMORY_FENCE 888#ifndef ECB_MEMORY_FENCE
731 #if ECB_C11 && !defined __STDC_NO_ATOMICS__ 889 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
732 /* we assume that these memory fences work on all variables/all memory accesses, */ 890 /* we assume that these memory fences work on all variables/all memory accesses, */
733 /* not just C11 atomics and atomic accesses */ 891 /* not just C11 atomics and atomic accesses */
734 #include <stdatomic.h> 892 #include <stdatomic.h>
735 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
736 /* any fence other than seq_cst, which isn't very efficient for us. */
737 /* Why that is, we don't know - either the C11 memory model is quite useless */
738 /* for most usages, or gcc and clang have a bug */
739 /* I *currently* lean towards the latter, and inefficiently implement */
740 /* all three of ecb's fences as a seq_cst fence */
741 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
742 /* for all __atomic_thread_fence's except seq_cst */
743 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst) 893 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
894 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
895 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
744 #endif 896 #endif
745#endif 897#endif
746 898
747#ifndef ECB_MEMORY_FENCE 899#ifndef ECB_MEMORY_FENCE
748 #if !ECB_AVOID_PTHREADS 900 #if !ECB_AVOID_PTHREADS
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768 920
769#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE 921#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
770 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 922 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
771#endif 923#endif
772 924
925#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
926 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
927#endif
928
773/*****************************************************************************/ 929/*****************************************************************************/
774 930
775#if ECB_CPP 931#if ECB_CPP
776 #define ecb_inline static inline 932 #define ecb_inline static inline
777#elif ECB_GCC_VERSION(2,5) 933#elif ECB_GCC_VERSION(2,5)
… …
794 950
795#define ECB_CONCAT_(a, b) a ## b 951#define ECB_CONCAT_(a, b) a ## b
796#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) 952#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
797#define ECB_STRINGIFY_(a) # a 953#define ECB_STRINGIFY_(a) # a
798#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) 954#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
955#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
799 956
800#define ecb_function_ ecb_inline 957#define ecb_function_ ecb_inline
801 958
802#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8) 959#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
803 #define ecb_attribute(attrlist) __attribute__ (attrlist) 960 #define ecb_attribute(attrlist) __attribute__ (attrlist)
… …
840 #define ecb_deprecated __declspec (deprecated) 997 #define ecb_deprecated __declspec (deprecated)
841#else 998#else
842 #define ecb_deprecated ecb_attribute ((__deprecated__)) 999 #define ecb_deprecated ecb_attribute ((__deprecated__))
843#endif 1000#endif
844 1001
1002#if _MSC_VER >= 1500
1003 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
1004#elif ECB_GCC_VERSION(4,5)
1005 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
1006#else
1007 #define ecb_deprecated_message(msg) ecb_deprecated
1008#endif
1009
1010#if _MSC_VER >= 1400
1011 #define ecb_noinline __declspec (noinline)
1012#else
845#define ecb_noinline ecb_attribute ((__noinline__)) 1013 #define ecb_noinline ecb_attribute ((__noinline__))
1014#endif
1015
846#define ecb_unused ecb_attribute ((__unused__)) 1016#define ecb_unused ecb_attribute ((__unused__))
847#define ecb_const ecb_attribute ((__const__)) 1017#define ecb_const ecb_attribute ((__const__))
848#define ecb_pure ecb_attribute ((__pure__)) 1018#define ecb_pure ecb_attribute ((__pure__))
849 1019
850/* TODO http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx __declspec(noreturn) */
851#if ECB_C11 || __IBMC_NORETURN 1020#if ECB_C11 || __IBMC_NORETURN
852 /* http://pic.dhe.ibm.com/infocenter/compbg/v121v141/topic/com.ibm.xlcpp121.bg.doc/language_ref/noreturn.html */ 1021 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
853 #define ecb_noreturn _Noreturn 1022 #define ecb_noreturn _Noreturn
1023#elif ECB_CPP11
1024 #define ecb_noreturn [[noreturn]]
1025#elif _MSC_VER >= 1200
1026 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
1027 #define ecb_noreturn __declspec (noreturn)
854#else 1028#else
855 #define ecb_noreturn ecb_attribute ((__noreturn__)) 1029 #define ecb_noreturn ecb_attribute ((__noreturn__))
856#endif 1030#endif
857 1031
858#if ECB_GCC_VERSION(4,3) 1032#if ECB_GCC_VERSION(4,3)
… …
889#else 1063#else
890 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x); 1064 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
891 ecb_function_ ecb_const int 1065 ecb_function_ ecb_const int
892 ecb_ctz32 (uint32_t x) 1066 ecb_ctz32 (uint32_t x)
893 { 1067 {
1068#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1069 unsigned long r;
1070 _BitScanForward (&r, x);
1071 return (int)r;
1072#else
894 int r = 0; 1073 int r = 0;
895 1074
896 x &= ~x + 1; /* this isolates the lowest bit */ 1075 x &= ~x + 1; /* this isolates the lowest bit */
897 1076
898#if ECB_branchless_on_i386 1077#if ECB_branchless_on_i386
… …
908 if (x & 0xff00ff00) r += 8; 1087 if (x & 0xff00ff00) r += 8;
909 if (x & 0xffff0000) r += 16; 1088 if (x & 0xffff0000) r += 16;
910#endif 1089#endif
911 1090
912 return r; 1091 return r;
1092#endif
913 } 1093 }
914 1094
915 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x); 1095 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
916 ecb_function_ ecb_const int 1096 ecb_function_ ecb_const int
917 ecb_ctz64 (uint64_t x) 1097 ecb_ctz64 (uint64_t x)
918 { 1098 {
1099#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1100 unsigned long r;
1101 _BitScanForward64 (&r, x);
1102 return (int)r;
1103#else
919 int shift = x & 0xffffffffU ? 0 : 32; 1104 int shift = x & 0xffffffff ? 0 : 32;
920 return ecb_ctz32 (x >> shift) + shift; 1105 return ecb_ctz32 (x >> shift) + shift;
1106#endif
921 } 1107 }
922 1108
923 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x); 1109 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
924 ecb_function_ ecb_const int 1110 ecb_function_ ecb_const int
925 ecb_popcount32 (uint32_t x) 1111 ecb_popcount32 (uint32_t x)
… …
933 } 1119 }
934 1120
935 ecb_function_ ecb_const int ecb_ld32 (uint32_t x); 1121 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
936 ecb_function_ ecb_const int ecb_ld32 (uint32_t x) 1122 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
937 { 1123 {
1124#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1125 unsigned long r;
1126 _BitScanReverse (&r, x);
1127 return (int)r;
1128#else
938 int r = 0; 1129 int r = 0;
939 1130
940 if (x >> 16) { x >>= 16; r += 16; } 1131 if (x >> 16) { x >>= 16; r += 16; }
941 if (x >> 8) { x >>= 8; r += 8; } 1132 if (x >> 8) { x >>= 8; r += 8; }
942 if (x >> 4) { x >>= 4; r += 4; } 1133 if (x >> 4) { x >>= 4; r += 4; }
943 if (x >> 2) { x >>= 2; r += 2; } 1134 if (x >> 2) { x >>= 2; r += 2; }
944 if (x >> 1) { r += 1; } 1135 if (x >> 1) { r += 1; }
945 1136
946 return r; 1137 return r;
1138#endif
947 } 1139 }
948 1140
949 ecb_function_ ecb_const int ecb_ld64 (uint64_t x); 1141 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
950 ecb_function_ ecb_const int ecb_ld64 (uint64_t x) 1142 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
951 { 1143 {
1144#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1145 unsigned long r;
1146 _BitScanReverse64 (&r, x);
1147 return (int)r;
1148#else
952 int r = 0; 1149 int r = 0;
953 1150
954 if (x >> 32) { x >>= 32; r += 32; } 1151 if (x >> 32) { x >>= 32; r += 32; }
955 1152
956 return r + ecb_ld32 (x); 1153 return r + ecb_ld32 (x);
1154#endif
957 } 1155 }
958#endif 1156#endif
959 1157
960ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x); 1158ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
961ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); } 1159ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
… …
1017ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } 1215ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1018ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } 1216ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1019ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } 1217ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1020ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } 1218ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1021 1219
1220#if ECB_CPP
1221
1222inline uint8_t ecb_ctz (uint8_t v) { return ecb_ctz32 (v); }
1223inline uint16_t ecb_ctz (uint16_t v) { return ecb_ctz32 (v); }
1224inline uint32_t ecb_ctz (uint32_t v) { return ecb_ctz32 (v); }
1225inline uint64_t ecb_ctz (uint64_t v) { return ecb_ctz64 (v); }
1226
1227inline bool ecb_is_pot (uint8_t v) { return ecb_is_pot32 (v); }
1228inline bool ecb_is_pot (uint16_t v) { return ecb_is_pot32 (v); }
1229inline bool ecb_is_pot (uint32_t v) { return ecb_is_pot32 (v); }
1230inline bool ecb_is_pot (uint64_t v) { return ecb_is_pot64 (v); }
1231
1232inline int ecb_ld (uint8_t v) { return ecb_ld32 (v); }
1233inline int ecb_ld (uint16_t v) { return ecb_ld32 (v); }
1234inline int ecb_ld (uint32_t v) { return ecb_ld32 (v); }
1235inline int ecb_ld (uint64_t v) { return ecb_ld64 (v); }
1236
1237inline int ecb_popcount (uint8_t v) { return ecb_popcount32 (v); }
1238inline int ecb_popcount (uint16_t v) { return ecb_popcount32 (v); }
1239inline int ecb_popcount (uint32_t v) { return ecb_popcount32 (v); }
1240inline int ecb_popcount (uint64_t v) { return ecb_popcount64 (v); }
1241
1242inline uint8_t ecb_bitrev (uint8_t v) { return ecb_bitrev8 (v); }
1243inline uint16_t ecb_bitrev (uint16_t v) { return ecb_bitrev16 (v); }
1244inline uint32_t ecb_bitrev (uint32_t v) { return ecb_bitrev32 (v); }
1245
1246inline uint8_t ecb_rotl (uint8_t v, unsigned int count) { return ecb_rotl8 (v, count); }
1247inline uint16_t ecb_rotl (uint16_t v, unsigned int count) { return ecb_rotl16 (v, count); }
1248inline uint32_t ecb_rotl (uint32_t v, unsigned int count) { return ecb_rotl32 (v, count); }
1249inline uint64_t ecb_rotl (uint64_t v, unsigned int count) { return ecb_rotl64 (v, count); }
1250
1251inline uint8_t ecb_rotr (uint8_t v, unsigned int count) { return ecb_rotr8 (v, count); }
1252inline uint16_t ecb_rotr (uint16_t v, unsigned int count) { return ecb_rotr16 (v, count); }
1253inline uint32_t ecb_rotr (uint32_t v, unsigned int count) { return ecb_rotr32 (v, count); }
1254inline uint64_t ecb_rotr (uint64_t v, unsigned int count) { return ecb_rotr64 (v, count); }
1255
1256#endif
1257
1022#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64)) 1258#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1259 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1260 #define ecb_bswap16(x) __builtin_bswap16 (x)
1261 #else
1023 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 1262 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1263 #endif
1024 #define ecb_bswap32(x) __builtin_bswap32 (x) 1264 #define ecb_bswap32(x) __builtin_bswap32 (x)
1025 #define ecb_bswap64(x) __builtin_bswap64 (x) 1265 #define ecb_bswap64(x) __builtin_bswap64 (x)
1266#elif _MSC_VER
1267 #include <stdlib.h>
1268 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1269 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1270 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
1026#else 1271#else
1027 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x); 1272 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1028 ecb_function_ ecb_const uint16_t 1273 ecb_function_ ecb_const uint16_t
1029 ecb_bswap16 (uint16_t x) 1274 ecb_bswap16 (uint16_t x)
1030 { 1275 {
… …
1055#endif 1300#endif
1056 1301
1057/* try to tell the compiler that some condition is definitely true */ 1302/* try to tell the compiler that some condition is definitely true */
1058#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0 1303#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1059 1304
1060ecb_inline ecb_const unsigned char ecb_byteorder_helper (void); 1305ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1061ecb_inline ecb_const unsigned char 1306ecb_inline ecb_const uint32_t
1062ecb_byteorder_helper (void) 1307ecb_byteorder_helper (void)
1063{ 1308{
1064 /* the union code still generates code under pressure in gcc, */ 1309 /* the union code still generates code under pressure in gcc, */
1065 /* but less than using pointers, and always seems to */ 1310 /* but less than using pointers, and always seems to */
1066 /* successfully return a constant. */ 1311 /* successfully return a constant. */
1067 /* the reason why we have this horrible preprocessor mess */ 1312 /* the reason why we have this horrible preprocessor mess */
1068 /* is to avoid it in all cases, at least on common architectures */ 1313 /* is to avoid it in all cases, at least on common architectures */
1069 /* or when using a recent enough gcc version (>= 4.6) */ 1314 /* or when using a recent enough gcc version (>= 4.6) */
1070#if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64
1071 return 0x44;
1072#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ 1315#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1316 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1317 #define ECB_LITTLE_ENDIAN 1
1073 return 0x44; 1318 return 0x44332211;
1074#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ 1319#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1320 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1321 #define ECB_BIG_ENDIAN 1
1075 return 0x11; 1322 return 0x11223344;
1076#else 1323#else
1077 union 1324 union
1078 { 1325 {
1326 uint8_t c[4];
1079 uint32_t i; 1327 uint32_t u;
1080 uint8_t c;
1081 } u = { 0x11223344 }; 1328 } u = { 0x11, 0x22, 0x33, 0x44 };
1082 return u.c; 1329 return u.u;
1083#endif 1330#endif
1084} 1331}
1085 1332
1086ecb_inline ecb_const ecb_bool ecb_big_endian (void); 1333ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1087ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } 1334ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1088ecb_inline ecb_const ecb_bool ecb_little_endian (void); 1335ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1089ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } 1336ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1337
1338/*****************************************************************************/
1339/* unaligned load/store */
1340
1341ecb_inline uint_fast16_t ecb_be_u16_to_host (uint_fast16_t v) { return ecb_little_endian () ? ecb_bswap16 (v) : v; }
1342ecb_inline uint_fast32_t ecb_be_u32_to_host (uint_fast32_t v) { return ecb_little_endian () ? ecb_bswap32 (v) : v; }
1343ecb_inline uint_fast64_t ecb_be_u64_to_host (uint_fast64_t v) { return ecb_little_endian () ? ecb_bswap64 (v) : v; }
1344
1345ecb_inline uint_fast16_t ecb_le_u16_to_host (uint_fast16_t v) { return ecb_big_endian () ? ecb_bswap16 (v) : v; }
1346ecb_inline uint_fast32_t ecb_le_u32_to_host (uint_fast32_t v) { return ecb_big_endian () ? ecb_bswap32 (v) : v; }
1347ecb_inline uint_fast64_t ecb_le_u64_to_host (uint_fast64_t v) { return ecb_big_endian () ? ecb_bswap64 (v) : v; }
1348
1349ecb_inline uint_fast16_t ecb_peek_u16_u (const void *ptr) { uint16_t v; memcpy (&v, ptr, sizeof (v)); return v; }
1350ecb_inline uint_fast32_t ecb_peek_u32_u (const void *ptr) { uint32_t v; memcpy (&v, ptr, sizeof (v)); return v; }
1351ecb_inline uint_fast64_t ecb_peek_u64_u (const void *ptr) { uint64_t v; memcpy (&v, ptr, sizeof (v)); return v; }
1352
1353ecb_inline uint_fast16_t ecb_peek_be_u16_u (const void *ptr) { return ecb_be_u16_to_host (ecb_peek_u16_u (ptr)); }
1354ecb_inline uint_fast32_t ecb_peek_be_u32_u (const void *ptr) { return ecb_be_u32_to_host (ecb_peek_u32_u (ptr)); }
1355ecb_inline uint_fast64_t ecb_peek_be_u64_u (const void *ptr) { return ecb_be_u64_to_host (ecb_peek_u64_u (ptr)); }
1356
1357ecb_inline uint_fast16_t ecb_peek_le_u16_u (const void *ptr) { return ecb_le_u16_to_host (ecb_peek_u16_u (ptr)); }
1358ecb_inline uint_fast32_t ecb_peek_le_u32_u (const void *ptr) { return ecb_le_u32_to_host (ecb_peek_u32_u (ptr)); }
1359ecb_inline uint_fast64_t ecb_peek_le_u64_u (const void *ptr) { return ecb_le_u64_to_host (ecb_peek_u64_u (ptr)); }
1360
1361ecb_inline uint_fast16_t ecb_host_to_be_u16 (uint_fast16_t v) { return ecb_little_endian () ? ecb_bswap16 (v) : v; }
1362ecb_inline uint_fast32_t ecb_host_to_be_u32 (uint_fast32_t v) { return ecb_little_endian () ? ecb_bswap32 (v) : v; }
1363ecb_inline uint_fast64_t ecb_host_to_be_u64 (uint_fast64_t v) { return ecb_little_endian () ? ecb_bswap64 (v) : v; }
1364
1365ecb_inline uint_fast16_t ecb_host_to_le_u16 (uint_fast16_t v) { return ecb_big_endian () ? ecb_bswap16 (v) : v; }
1366ecb_inline uint_fast32_t ecb_host_to_le_u32 (uint_fast32_t v) { return ecb_big_endian () ? ecb_bswap32 (v) : v; }
1367ecb_inline uint_fast64_t ecb_host_to_le_u64 (uint_fast64_t v) { return ecb_big_endian () ? ecb_bswap64 (v) : v; }
1368
1369ecb_inline void ecb_poke_u16_u (void *ptr, uint16_t v) { memcpy (ptr, &v, sizeof (v)); }
1370ecb_inline void ecb_poke_u32_u (void *ptr, uint32_t v) { memcpy (ptr, &v, sizeof (v)); }
1371ecb_inline void ecb_poke_u64_u (void *ptr, uint64_t v) { memcpy (ptr, &v, sizeof (v)); }
1372
1373ecb_inline void ecb_poke_be_u16_u (void *ptr, uint_fast16_t v) { ecb_poke_u16_u (ptr, ecb_host_to_be_u16 (v)); }
1374ecb_inline void ecb_poke_be_u32_u (void *ptr, uint_fast32_t v) { ecb_poke_u32_u (ptr, ecb_host_to_be_u32 (v)); }
1375ecb_inline void ecb_poke_be_u64_u (void *ptr, uint_fast64_t v) { ecb_poke_u64_u (ptr, ecb_host_to_be_u64 (v)); }
1376
1377ecb_inline void ecb_poke_le_u16_u (void *ptr, uint_fast16_t v) { ecb_poke_u16_u (ptr, ecb_host_to_le_u16 (v)); }
1378ecb_inline void ecb_poke_le_u32_u (void *ptr, uint_fast32_t v) { ecb_poke_u32_u (ptr, ecb_host_to_le_u32 (v)); }
1379ecb_inline void ecb_poke_le_u64_u (void *ptr, uint_fast64_t v) { ecb_poke_u64_u (ptr, ecb_host_to_le_u64 (v)); }
1380
1381#if ECB_CPP
1382
1383inline uint8_t ecb_bswap (uint8_t v) { return v; }
1384inline uint16_t ecb_bswap (uint16_t v) { return ecb_bswap16 (v); }
1385inline uint32_t ecb_bswap (uint32_t v) { return ecb_bswap32 (v); }
1386inline uint64_t ecb_bswap (uint64_t v) { return ecb_bswap64 (v); }
1387
1388template<typename T> inline T ecb_be_to_host (T v) { return ecb_little_endian () ? ecb_bswap (v) : v; }
1389template<typename T> inline T ecb_le_to_host (T v) { return ecb_big_endian () ? ecb_bswap (v) : v; }
1390template<typename T> inline T ecb_peek (const void *ptr) { return *(const T *)ptr; }
1391template<typename T> inline T ecb_peek_be (const void *ptr) { return ecb_be_to_host (ecb_peek <T> (ptr)); }
1392template<typename T> inline T ecb_peek_le (const void *ptr) { return ecb_le_to_host (ecb_peek <T> (ptr)); }
1393template<typename T> inline T ecb_peek_u (const void *ptr) { T v; memcpy (&v, ptr, sizeof (v)); return v; }
1394template<typename T> inline T ecb_peek_be_u (const void *ptr) { return ecb_be_to_host (ecb_peek_u<T> (ptr)); }
1395template<typename T> inline T ecb_peek_le_u (const void *ptr) { return ecb_le_to_host (ecb_peek_u<T> (ptr)); }
1396
1397template<typename T> inline T ecb_host_to_be (T v) { return ecb_little_endian () ? ecb_bswap (v) : v; }
1398template<typename T> inline T ecb_host_to_le (T v) { return ecb_big_endian () ? ecb_bswap (v) : v; }
1399template<typename T> inline void ecb_poke (void *ptr, T v) { *(T *)ptr = v; }
1400template<typename T> inline void ecb_poke_be (void *ptr, T v) { return ecb_poke <T> (ptr, ecb_host_to_be (v)); }
1401template<typename T> inline void ecb_poke_le (void *ptr, T v) { return ecb_poke <T> (ptr, ecb_host_to_le (v)); }
1402template<typename T> inline void ecb_poke_u (void *ptr, T v) { memcpy (ptr, &v, sizeof (v)); }
1403template<typename T> inline void ecb_poke_be_u (void *ptr, T v) { return ecb_poke_u<T> (ptr, ecb_host_to_be (v)); }
1404template<typename T> inline void ecb_poke_le_u (void *ptr, T v) { return ecb_poke_u<T> (ptr, ecb_host_to_le (v)); }
1405
1406#endif
1407
1408/*****************************************************************************/
1090 1409
1091#if ECB_GCC_VERSION(3,0) || ECB_C99 1410#if ECB_GCC_VERSION(3,0) || ECB_C99
1092 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) 1411 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1093#else 1412#else
1094 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) 1413 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
… …
1119 } 1438 }
1120#else 1439#else
1121 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1440 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1122#endif 1441#endif
1123 1442
1443/*****************************************************************************/
1444
1445ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1446ecb_function_ ecb_const uint32_t
1447ecb_binary16_to_binary32 (uint32_t x)
1448{
1449 unsigned int s = (x & 0x8000) << (31 - 15);
1450 int e = (x >> 10) & 0x001f;
1451 unsigned int m = x & 0x03ff;
1452
1453 if (ecb_expect_false (e == 31))
1454 /* infinity or NaN */
1455 e = 255 - (127 - 15);
1456 else if (ecb_expect_false (!e))
1457 {
1458 if (ecb_expect_true (!m))
1459 /* zero, handled by code below by forcing e to 0 */
1460 e = 0 - (127 - 15);
1461 else
1462 {
1463 /* subnormal, renormalise */
1464 unsigned int s = 10 - ecb_ld32 (m);
1465
1466 m = (m << s) & 0x3ff; /* mask implicit bit */
1467 e -= s - 1;
1468 }
1469 }
1470
1471 /* e and m now are normalised, or zero, (or inf or nan) */
1472 e += 127 - 15;
1473
1474 return s | (e << 23) | (m << (23 - 10));
1475}
1476
1477ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1478ecb_function_ ecb_const uint16_t
1479ecb_binary32_to_binary16 (uint32_t x)
1480{
1481 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1482 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1483 unsigned int m = x & 0x007fffff;
1484
1485 x &= 0x7fffffff;
1486
1487 /* if it's within range of binary16 normals, use fast path */
1488 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1489 {
1490 /* mantissa round-to-even */
1491 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1492
1493 /* handle overflow */
1494 if (ecb_expect_false (m >= 0x00800000))
1495 {
1496 m >>= 1;
1497 e += 1;
1498 }
1499
1500 return s | (e << 10) | (m >> (23 - 10));
1501 }
1502
1503 /* handle large numbers and infinity */
1504 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1505 return s | 0x7c00;
1506
1507 /* handle zero, subnormals and small numbers */
1508 if (ecb_expect_true (x < 0x38800000))
1509 {
1510 /* zero */
1511 if (ecb_expect_true (!x))
1512 return s;
1513
1514 /* handle subnormals */
1515
1516 /* too small, will be zero */
1517 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1518 return s;
1519
1520 m |= 0x00800000; /* make implicit bit explicit */
1521
1522 /* very tricky - we need to round to the nearest e (+10) bit value */
1523 {
1524 unsigned int bits = 14 - e;
1525 unsigned int half = (1 << (bits - 1)) - 1;
1526 unsigned int even = (m >> bits) & 1;
1527
1528 /* if this overflows, we will end up with a normalised number */
1529 m = (m + half + even) >> bits;
1530 }
1531
1532 return s | m;
1533 }
1534
1535 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1536 m >>= 13;
1537
1538 return s | 0x7c00 | m | !m;
1539}
1540
1124/*******************************************************************************/ 1541/*******************************************************************************/
1125/* floating point stuff, can be disabled by defining ECB_NO_LIBM */ 1542/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1126 1543
1127/* basically, everything uses "ieee pure-endian" floating point numbers */ 1544/* basically, everything uses "ieee pure-endian" floating point numbers */
1128/* the only noteworthy exception is ancient armle, which uses order 43218765 */ 1545/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1129#if 0 \ 1546#if 0 \
1130 || __i386 || __i386__ \ 1547 || __i386 || __i386__ \
1131 || __amd64 || __amd64__ || __x86_64 || __x86_64__ \ 1548 || ECB_GCC_AMD64 \
1132 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \ 1549 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1133 || defined __s390__ || defined __s390x__ \ 1550 || defined __s390__ || defined __s390x__ \
1134 || defined __mips__ \ 1551 || defined __mips__ \
1135 || defined __alpha__ \ 1552 || defined __alpha__ \
1136 || defined __hppa__ \ 1553 || defined __hppa__ \
1137 || defined __ia64__ \ 1554 || defined __ia64__ \
1138 || defined __m68k__ \ 1555 || defined __m68k__ \
1139 || defined __m88k__ \ 1556 || defined __m88k__ \
1140 || defined __sh__ \ 1557 || defined __sh__ \
1141 || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64 \ 1558 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1142 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \ 1559 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1143 || defined __aarch64__ 1560 || defined __aarch64__
1144 #define ECB_STDFP 1 1561 #define ECB_STDFP 1
1145 #include <string.h> /* for memcpy */
1146#else 1562#else
1147 #define ECB_STDFP 0 1563 #define ECB_STDFP 0
1148#endif 1564#endif
1149 1565
1150#ifndef ECB_NO_LIBM 1566#ifndef ECB_NO_LIBM
… …
1164 #define ECB_NAN ECB_INFINITY 1580 #define ECB_NAN ECB_INFINITY
1165 #endif 1581 #endif
1166 1582
1167 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L 1583 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1168 #define ecb_ldexpf(x,e) ldexpf ((x), (e)) 1584 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1585 #define ecb_frexpf(x,e) frexpf ((x), (e))
1169 #else 1586 #else
1170 #define ecb_ldexpf(x,e) (float) ldexp ((x), (e)) 1587 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1588 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1171 #endif 1589 #endif
1172
1173 /* converts an ieee half/binary16 to a float */
1174 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1175 ecb_function_ ecb_const float
1176 ecb_binary16_to_float (uint16_t x)
1177 {
1178 int e = (x >> 10) & 0x1f;
1179 int m = x & 0x3ff;
1180 float r;
1181
1182 if (!e ) r = ecb_ldexpf (m , -24);
1183 else if (e != 31) r = ecb_ldexpf (m + 0x400, e - 25);
1184 else if (m ) r = ECB_NAN;
1185 else r = ECB_INFINITY;
1186
1187 return x & 0x8000 ? -r : r;
1188 }
1189 1590
1190 /* convert a float to ieee single/binary32 */ 1591 /* convert a float to ieee single/binary32 */
1191 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x); 1592 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1192 ecb_function_ ecb_const uint32_t 1593 ecb_function_ ecb_const uint32_t
1193 ecb_float_to_binary32 (float x) 1594 ecb_float_to_binary32 (float x)
… …
1204 if (x == 0e0f ) return 0x00000000U; 1605 if (x == 0e0f ) return 0x00000000U;
1205 if (x > +3.40282346638528860e+38f) return 0x7f800000U; 1606 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1206 if (x < -3.40282346638528860e+38f) return 0xff800000U; 1607 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1207 if (x != x ) return 0x7fbfffffU; 1608 if (x != x ) return 0x7fbfffffU;
1208 1609
1209 m = frexpf (x, &e) * 0x1000000U; 1610 m = ecb_frexpf (x, &e) * 0x1000000U;
1210 1611
1211 r = m & 0x80000000U; 1612 r = m & 0x80000000U;
1212 1613
1213 if (r) 1614 if (r)
1214 m = -m; 1615 m = -m;
… …
1325 #endif 1726 #endif
1326 1727
1327 return r; 1728 return r;
1328 } 1729 }
1329 1730
1731 /* convert a float to ieee half/binary16 */
1732 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1733 ecb_function_ ecb_const uint16_t
1734 ecb_float_to_binary16 (float x)
1735 {
1736 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1737 }
1738
1739 /* convert an ieee half/binary16 to float */
1740 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1741 ecb_function_ ecb_const float
1742 ecb_binary16_to_float (uint16_t x)
1743 {
1744 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1745 }
1746
1330#endif 1747#endif
1331 1748
1332#endif 1749#endif
1333 1750
1334/* ECB.H END */ 1751/* ECB.H END */
1335 1752
1336#if ECB_MEMORY_FENCE_NEEDS_PTHREADS 1753#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1337/* if your architecture doesn't need memory fences, e.g. because it is 1754/* if your architecture doesn't need memory fences, e.g. because it is
1338 * single-cpu/core, or if you use libev in a project that doesn't use libev 1755 * single-cpu/core, or if you use libev in a project that doesn't use libev
1339 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling 1756 * from multiple threads, then you can define ECB_NO_THREADS when compiling
1340 * libev, in which cases the memory fences become nops. 1757 * libev, in which cases the memory fences become nops.
1341 * alternatively, you can remove this #error and link against libpthread, 1758 * alternatively, you can remove this #error and link against libpthread,
1342 * which will then provide the memory fences. 1759 * which will then provide the memory fences.
1343 */ 1760 */
1344# error "memory fences not defined for your architecture, please report" 1761# error "memory fences not defined for your architecture, please report"
… …
1348# define ECB_MEMORY_FENCE do { } while (0) 1765# define ECB_MEMORY_FENCE do { } while (0)
1349# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 1766# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1350# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 1767# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1351#endif 1768#endif
1352 1769
1353#define expect_false(cond) ecb_expect_false (cond)
1354#define expect_true(cond) ecb_expect_true (cond)
1355#define noinline ecb_noinline
1356
1357#define inline_size ecb_inline 1770#define inline_size ecb_inline
1358 1771
1359#if EV_FEATURE_CODE 1772#if EV_FEATURE_CODE
1360# define inline_speed ecb_inline 1773# define inline_speed ecb_inline
1361#else 1774#else
1362# define inline_speed static noinline 1775# define inline_speed ecb_noinline static
1363#endif 1776#endif
1777
1778/*****************************************************************************/
1779/* raw syscall wrappers */
1780
1781#if EV_NEED_SYSCALL
1782
1783#include <sys/syscall.h>
1784
1785/*
1786 * define some syscall wrappers for common architectures
1787 * this is mostly for nice looks during debugging, not performance.
1788 * our syscalls return < 0, not == -1, on error. which is good
1789 * enough for linux aio.
1790 * TODO: arm is also common nowadays, maybe even mips and x86
1791 * TODO: after implementing this, it suddenly looks like overkill, but its hard to remove...
1792 */
1793#if __GNUC__ && __linux && ECB_AMD64 && !EV_FEATURE_CODE
1794 /* the costly errno access probably kills this for size optimisation */
1795
1796 #define ev_syscall(nr,narg,arg1,arg2,arg3,arg4,arg5,arg6) \
1797 ({ \
1798 long res; \
1799 register unsigned long r6 __asm__ ("r9" ); \
1800 register unsigned long r5 __asm__ ("r8" ); \
1801 register unsigned long r4 __asm__ ("r10"); \
1802 register unsigned long r3 __asm__ ("rdx"); \
1803 register unsigned long r2 __asm__ ("rsi"); \
1804 register unsigned long r1 __asm__ ("rdi"); \
1805 if (narg >= 6) r6 = (unsigned long)(arg6); \
1806 if (narg >= 5) r5 = (unsigned long)(arg5); \
1807 if (narg >= 4) r4 = (unsigned long)(arg4); \
1808 if (narg >= 3) r3 = (unsigned long)(arg3); \
1809 if (narg >= 2) r2 = (unsigned long)(arg2); \
1810 if (narg >= 1) r1 = (unsigned long)(arg1); \
1811 __asm__ __volatile__ ( \
1812 "syscall\n\t" \
1813 : "=a" (res) \
1814 : "0" (nr), "r" (r1), "r" (r2), "r" (r3), "r" (r4), "r" (r5) \
1815 : "cc", "r11", "cx", "memory"); \
1816 errno = -res; \
1817 res; \
1818 })
1819
1820#endif
1821
1822#ifdef ev_syscall
1823 #define ev_syscall0(nr) ev_syscall (nr, 0, 0, 0, 0, 0, 0, 0)
1824 #define ev_syscall1(nr,arg1) ev_syscall (nr, 1, arg1, 0, 0, 0, 0, 0)
1825 #define ev_syscall2(nr,arg1,arg2) ev_syscall (nr, 2, arg1, arg2, 0, 0, 0, 0)
1826 #define ev_syscall3(nr,arg1,arg2,arg3) ev_syscall (nr, 3, arg1, arg2, arg3, 0, 0, 0)
1827 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) ev_syscall (nr, 3, arg1, arg2, arg3, arg4, 0, 0)
1828 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) ev_syscall (nr, 5, arg1, arg2, arg3, arg4, arg5, 0)
1829 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) ev_syscall (nr, 6, arg1, arg2, arg3, arg4, arg5,arg6)
1830#else
1831 #define ev_syscall0(nr) syscall (nr)
1832 #define ev_syscall1(nr,arg1) syscall (nr, arg1)
1833 #define ev_syscall2(nr,arg1,arg2) syscall (nr, arg1, arg2)
1834 #define ev_syscall3(nr,arg1,arg2,arg3) syscall (nr, arg1, arg2, arg3)
1835 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) syscall (nr, arg1, arg2, arg3, arg4)
1836 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) syscall (nr, arg1, arg2, arg3, arg4, arg5)
1837 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) syscall (nr, arg1, arg2, arg3, arg4, arg5,arg6)
1838#endif
1839
1840#endif
1841
1842/*****************************************************************************/
1364 1843
1365#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1844#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
1366 1845
1367#if EV_MINPRI == EV_MAXPRI 1846#if EV_MINPRI == EV_MAXPRI
1368# define ABSPRI(w) (((W)w), 0) 1847# define ABSPRI(w) (((W)w), 0)
1369#else 1848#else
1370# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1849# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
1371#endif 1850#endif
1372 1851
1373#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1852#define EMPTY /* required for microsofts broken pseudo-c compiler */
1374#define EMPTY2(a,b) /* used to suppress some warnings */
1375 1853
1376typedef ev_watcher *W; 1854typedef ev_watcher *W;
1377typedef ev_watcher_list *WL; 1855typedef ev_watcher_list *WL;
1378typedef ev_watcher_time *WT; 1856typedef ev_watcher_time *WT;
1379 1857
… …
1404# include "ev_win32.c" 1882# include "ev_win32.c"
1405#endif 1883#endif
1406 1884
1407/*****************************************************************************/ 1885/*****************************************************************************/
1408 1886
1887#if EV_USE_LINUXAIO
1888# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1889#endif
1890
1409/* define a suitable floor function (only used by periodics atm) */ 1891/* define a suitable floor function (only used by periodics atm) */
1410 1892
1411#if EV_USE_FLOOR 1893#if EV_USE_FLOOR
1412# include <math.h> 1894# include <math.h>
1413# define ev_floor(v) floor (v) 1895# define ev_floor(v) floor (v)
1414#else 1896#else
1415 1897
1416#include <float.h> 1898#include <float.h>
1417 1899
1418/* a floor() replacement function, should be independent of ev_tstamp type */ 1900/* a floor() replacement function, should be independent of ev_tstamp type */
1901ecb_noinline
1419static ev_tstamp noinline 1902static ev_tstamp
1420ev_floor (ev_tstamp v) 1903ev_floor (ev_tstamp v)
1421{ 1904{
1422 /* the choice of shift factor is not terribly important */ 1905 /* the choice of shift factor is not terribly important */
1423#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1906#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1424 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1907 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1425#else 1908#else
1426 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; 1909 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1427#endif 1910#endif
1428 1911
1912 /* special treatment for negative arguments */
1913 if (ecb_expect_false (v < 0.))
1914 {
1915 ev_tstamp f = -ev_floor (-v);
1916
1917 return f - (f == v ? 0 : 1);
1918 }
1919
1429 /* argument too large for an unsigned long? */ 1920 /* argument too large for an unsigned long? then reduce it */
1430 if (expect_false (v >= shift)) 1921 if (ecb_expect_false (v >= shift))
1431 { 1922 {
1432 ev_tstamp f; 1923 ev_tstamp f;
1433 1924
1434 if (v == v - 1.) 1925 if (v == v - 1.)
1435 return v; /* very large number */ 1926 return v; /* very large numbers are assumed to be integer */
1436 1927
1437 f = shift * ev_floor (v * (1. / shift)); 1928 f = shift * ev_floor (v * (1. / shift));
1438 return f + ev_floor (v - f); 1929 return f + ev_floor (v - f);
1439 } 1930 }
1440 1931
1441 /* special treatment for negative args? */
1442 if (expect_false (v < 0.))
1443 {
1444 ev_tstamp f = -ev_floor (-v);
1445
1446 return f - (f == v ? 0 : 1);
1447 }
1448
1449 /* fits into an unsigned long */ 1932 /* fits into an unsigned long */
1450 return (unsigned long)v; 1933 return (unsigned long)v;
1451} 1934}
1452 1935
1453#endif 1936#endif
… …
1456 1939
1457#ifdef __linux 1940#ifdef __linux
1458# include <sys/utsname.h> 1941# include <sys/utsname.h>
1459#endif 1942#endif
1460 1943
1461static unsigned int noinline ecb_cold 1944ecb_noinline ecb_cold
1945static unsigned int
1462ev_linux_version (void) 1946ev_linux_version (void)
1463{ 1947{
1464#ifdef __linux 1948#ifdef __linux
1465 unsigned int v = 0; 1949 unsigned int v = 0;
1466 struct utsname buf; 1950 struct utsname buf;
… …
1495} 1979}
1496 1980
1497/*****************************************************************************/ 1981/*****************************************************************************/
1498 1982
1499#if EV_AVOID_STDIO 1983#if EV_AVOID_STDIO
1500static void noinline ecb_cold 1984ecb_noinline ecb_cold
1985static void
1501ev_printerr (const char *msg) 1986ev_printerr (const char *msg)
1502{ 1987{
1503 write (STDERR_FILENO, msg, strlen (msg)); 1988 write (STDERR_FILENO, msg, strlen (msg));
1504} 1989}
1505#endif 1990#endif
1506 1991
1507static void (*syserr_cb)(const char *msg) EV_THROW; 1992static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
1508 1993
1509void ecb_cold 1994ecb_cold
1995void
1510ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW 1996ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
1511{ 1997{
1512 syserr_cb = cb; 1998 syserr_cb = cb;
1513} 1999}
1514 2000
1515static void noinline ecb_cold 2001ecb_noinline ecb_cold
2002static void
1516ev_syserr (const char *msg) 2003ev_syserr (const char *msg)
1517{ 2004{
1518 if (!msg) 2005 if (!msg)
1519 msg = "(libev) system error"; 2006 msg = "(libev) system error";
1520 2007
… …
1533 abort (); 2020 abort ();
1534 } 2021 }
1535} 2022}
1536 2023
1537static void * 2024static void *
1538ev_realloc_emul (void *ptr, long size) EV_THROW 2025ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
1539{ 2026{
1540 /* some systems, notably openbsd and darwin, fail to properly 2027 /* some systems, notably openbsd and darwin, fail to properly
1541 * implement realloc (x, 0) (as required by both ansi c-89 and 2028 * implement realloc (x, 0) (as required by both ansi c-89 and
1542 * the single unix specification, so work around them here. 2029 * the single unix specification, so work around them here.
1543 * recently, also (at least) fedora and debian started breaking it, 2030 * recently, also (at least) fedora and debian started breaking it,
… …
1549 2036
1550 free (ptr); 2037 free (ptr);
1551 return 0; 2038 return 0;
1552} 2039}
1553 2040
1554static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul; 2041static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
1555 2042
1556void ecb_cold 2043ecb_cold
2044void
1557ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW 2045ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
1558{ 2046{
1559 alloc = cb; 2047 alloc = cb;
1560} 2048}
1561 2049
1562inline_speed void * 2050inline_speed void *
… …
1589typedef struct 2077typedef struct
1590{ 2078{
1591 WL head; 2079 WL head;
1592 unsigned char events; /* the events watched for */ 2080 unsigned char events; /* the events watched for */
1593 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 2081 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
1594 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 2082 unsigned char emask; /* some backends store the actual kernel mask in here */
1595 unsigned char unused; 2083 unsigned char eflags; /* flags field for use by backends */
1596#if EV_USE_EPOLL 2084#if EV_USE_EPOLL
1597 unsigned int egen; /* generation counter to counter epoll bugs */ 2085 unsigned int egen; /* generation counter to counter epoll bugs */
1598#endif 2086#endif
1599#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 2087#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1600 SOCKET handle; 2088 SOCKET handle;
… …
1654 static struct ev_loop default_loop_struct; 2142 static struct ev_loop default_loop_struct;
1655 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */ 2143 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
1656 2144
1657#else 2145#else
1658 2146
1659 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */ 2147 EV_API_DECL ev_tstamp ev_rt_now = EV_TS_CONST (0.); /* needs to be initialised to make it a definition despite extern */
1660 #define VAR(name,decl) static decl; 2148 #define VAR(name,decl) static decl;
1661 #include "ev_vars.h" 2149 #include "ev_vars.h"
1662 #undef VAR 2150 #undef VAR
1663 2151
1664 static int ev_default_loop_ptr; 2152 static int ev_default_loop_ptr;
1665 2153
1666#endif 2154#endif
1667 2155
1668#if EV_FEATURE_API 2156#if EV_FEATURE_API
1669# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 2157# define EV_RELEASE_CB if (ecb_expect_false (release_cb)) release_cb (EV_A)
1670# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 2158# define EV_ACQUIRE_CB if (ecb_expect_false (acquire_cb)) acquire_cb (EV_A)
1671# define EV_INVOKE_PENDING invoke_cb (EV_A) 2159# define EV_INVOKE_PENDING invoke_cb (EV_A)
1672#else 2160#else
1673# define EV_RELEASE_CB (void)0 2161# define EV_RELEASE_CB (void)0
1674# define EV_ACQUIRE_CB (void)0 2162# define EV_ACQUIRE_CB (void)0
1675# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 2163# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
… …
1679 2167
1680/*****************************************************************************/ 2168/*****************************************************************************/
1681 2169
1682#ifndef EV_HAVE_EV_TIME 2170#ifndef EV_HAVE_EV_TIME
1683ev_tstamp 2171ev_tstamp
1684ev_time (void) EV_THROW 2172ev_time (void) EV_NOEXCEPT
1685{ 2173{
1686#if EV_USE_REALTIME 2174#if EV_USE_REALTIME
1687 if (expect_true (have_realtime)) 2175 if (ecb_expect_true (have_realtime))
1688 { 2176 {
1689 struct timespec ts; 2177 struct timespec ts;
1690 clock_gettime (CLOCK_REALTIME, &ts); 2178 clock_gettime (CLOCK_REALTIME, &ts);
1691 return ts.tv_sec + ts.tv_nsec * 1e-9; 2179 return EV_TS_GET (ts);
1692 } 2180 }
1693#endif 2181#endif
1694 2182
2183 {
1695 struct timeval tv; 2184 struct timeval tv;
1696 gettimeofday (&tv, 0); 2185 gettimeofday (&tv, 0);
1697 return tv.tv_sec + tv.tv_usec * 1e-6; 2186 return EV_TV_GET (tv);
2187 }
1698} 2188}
1699#endif 2189#endif
1700 2190
1701inline_size ev_tstamp 2191inline_size ev_tstamp
1702get_clock (void) 2192get_clock (void)
1703{ 2193{
1704#if EV_USE_MONOTONIC 2194#if EV_USE_MONOTONIC
1705 if (expect_true (have_monotonic)) 2195 if (ecb_expect_true (have_monotonic))
1706 { 2196 {
1707 struct timespec ts; 2197 struct timespec ts;
1708 clock_gettime (CLOCK_MONOTONIC, &ts); 2198 clock_gettime (CLOCK_MONOTONIC, &ts);
1709 return ts.tv_sec + ts.tv_nsec * 1e-9; 2199 return EV_TS_GET (ts);
1710 } 2200 }
1711#endif 2201#endif
1712 2202
1713 return ev_time (); 2203 return ev_time ();
1714} 2204}
1715 2205
1716#if EV_MULTIPLICITY 2206#if EV_MULTIPLICITY
1717ev_tstamp 2207ev_tstamp
1718ev_now (EV_P) EV_THROW 2208ev_now (EV_P) EV_NOEXCEPT
1719{ 2209{
1720 return ev_rt_now; 2210 return ev_rt_now;
1721} 2211}
1722#endif 2212#endif
1723 2213
1724void 2214void
1725ev_sleep (ev_tstamp delay) EV_THROW 2215ev_sleep (ev_tstamp delay) EV_NOEXCEPT
1726{ 2216{
1727 if (delay > 0.) 2217 if (delay > EV_TS_CONST (0.))
1728 { 2218 {
1729#if EV_USE_NANOSLEEP 2219#if EV_USE_NANOSLEEP
1730 struct timespec ts; 2220 struct timespec ts;
1731 2221
1732 EV_TS_SET (ts, delay); 2222 EV_TS_SET (ts, delay);
1733 nanosleep (&ts, 0); 2223 nanosleep (&ts, 0);
1734#elif defined _WIN32 2224#elif defined _WIN32
2225 /* maybe this should round up, as ms is very low resolution */
2226 /* compared to select (µs) or nanosleep (ns) */
1735 Sleep ((unsigned long)(delay * 1e3)); 2227 Sleep ((unsigned long)(EV_TS_TO_MSEC (delay)));
1736#else 2228#else
1737 struct timeval tv; 2229 struct timeval tv;
1738 2230
1739 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 2231 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
1740 /* something not guaranteed by newer posix versions, but guaranteed */ 2232 /* something not guaranteed by newer posix versions, but guaranteed */
… …
1770 } 2262 }
1771 2263
1772 return ncur; 2264 return ncur;
1773} 2265}
1774 2266
1775static void * noinline ecb_cold 2267ecb_noinline ecb_cold
2268static void *
1776array_realloc (int elem, void *base, int *cur, int cnt) 2269array_realloc (int elem, void *base, int *cur, int cnt)
1777{ 2270{
1778 *cur = array_nextsize (elem, *cur, cnt); 2271 *cur = array_nextsize (elem, *cur, cnt);
1779 return ev_realloc (base, elem * *cur); 2272 return ev_realloc (base, elem * *cur);
1780} 2273}
1781 2274
2275#define array_needsize_noinit(base,offset,count)
2276
1782#define array_init_zero(base,count) \ 2277#define array_needsize_zerofill(base,offset,count) \
1783 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2278 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
1784 2279
1785#define array_needsize(type,base,cur,cnt,init) \ 2280#define array_needsize(type,base,cur,cnt,init) \
1786 if (expect_false ((cnt) > (cur))) \ 2281 if (ecb_expect_false ((cnt) > (cur))) \
1787 { \ 2282 { \
1788 int ecb_unused ocur_ = (cur); \ 2283 ecb_unused int ocur_ = (cur); \
1789 (base) = (type *)array_realloc \ 2284 (base) = (type *)array_realloc \
1790 (sizeof (type), (base), &(cur), (cnt)); \ 2285 (sizeof (type), (base), &(cur), (cnt)); \
1791 init ((base) + (ocur_), (cur) - ocur_); \ 2286 init ((base), ocur_, ((cur) - ocur_)); \
1792 } 2287 }
1793 2288
1794#if 0 2289#if 0
1795#define array_slim(type,stem) \ 2290#define array_slim(type,stem) \
1796 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2291 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
1805 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2300 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
1806 2301
1807/*****************************************************************************/ 2302/*****************************************************************************/
1808 2303
1809/* dummy callback for pending events */ 2304/* dummy callback for pending events */
1810static void noinline 2305ecb_noinline
2306static void
1811pendingcb (EV_P_ ev_prepare *w, int revents) 2307pendingcb (EV_P_ ev_prepare *w, int revents)
1812{ 2308{
1813} 2309}
1814 2310
1815void noinline 2311ecb_noinline
2312void
1816ev_feed_event (EV_P_ void *w, int revents) EV_THROW 2313ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
1817{ 2314{
1818 W w_ = (W)w; 2315 W w_ = (W)w;
1819 int pri = ABSPRI (w_); 2316 int pri = ABSPRI (w_);
1820 2317
1821 if (expect_false (w_->pending)) 2318 if (ecb_expect_false (w_->pending))
1822 pendings [pri][w_->pending - 1].events |= revents; 2319 pendings [pri][w_->pending - 1].events |= revents;
1823 else 2320 else
1824 { 2321 {
1825 w_->pending = ++pendingcnt [pri]; 2322 w_->pending = ++pendingcnt [pri];
1826 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2323 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
1827 pendings [pri][w_->pending - 1].w = w_; 2324 pendings [pri][w_->pending - 1].w = w_;
1828 pendings [pri][w_->pending - 1].events = revents; 2325 pendings [pri][w_->pending - 1].events = revents;
1829 } 2326 }
1830 2327
1831 pendingpri = NUMPRI - 1; 2328 pendingpri = NUMPRI - 1;
1832} 2329}
1833 2330
1834inline_speed void 2331inline_speed void
1835feed_reverse (EV_P_ W w) 2332feed_reverse (EV_P_ W w)
1836{ 2333{
1837 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2334 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
1838 rfeeds [rfeedcnt++] = w; 2335 rfeeds [rfeedcnt++] = w;
1839} 2336}
1840 2337
1841inline_size void 2338inline_size void
1842feed_reverse_done (EV_P_ int revents) 2339feed_reverse_done (EV_P_ int revents)
… …
1877inline_speed void 2374inline_speed void
1878fd_event (EV_P_ int fd, int revents) 2375fd_event (EV_P_ int fd, int revents)
1879{ 2376{
1880 ANFD *anfd = anfds + fd; 2377 ANFD *anfd = anfds + fd;
1881 2378
1882 if (expect_true (!anfd->reify)) 2379 if (ecb_expect_true (!anfd->reify))
1883 fd_event_nocheck (EV_A_ fd, revents); 2380 fd_event_nocheck (EV_A_ fd, revents);
1884} 2381}
1885 2382
1886void 2383void
1887ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW 2384ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
1888{ 2385{
1889 if (fd >= 0 && fd < anfdmax) 2386 if (fd >= 0 && fd < anfdmax)
1890 fd_event_nocheck (EV_A_ fd, revents); 2387 fd_event_nocheck (EV_A_ fd, revents);
1891} 2388}
1892 2389
… …
1895inline_size void 2392inline_size void
1896fd_reify (EV_P) 2393fd_reify (EV_P)
1897{ 2394{
1898 int i; 2395 int i;
1899 2396
2397 /* most backends do not modify the fdchanges list in backend_modfiy.
2398 * except io_uring, which has fixed-size buffers which might force us
2399 * to handle events in backend_modify, causing fdchangesd to be amended,
2400 * which could result in an endless loop.
2401 * to avoid this, we do not dynamically handle fds that were added
2402 * during fd_reify. that menas thast for those backends, fdchangecnt
2403 * might be non-zero during poll, which must cause them to not block.
2404 * to not put too much of a burden on other backends, this detail
2405 * needs to be handled in the backend.
2406 */
2407 int changecnt = fdchangecnt;
2408
1900#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 2409#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1901 for (i = 0; i < fdchangecnt; ++i) 2410 for (i = 0; i < changecnt; ++i)
1902 { 2411 {
1903 int fd = fdchanges [i]; 2412 int fd = fdchanges [i];
1904 ANFD *anfd = anfds + fd; 2413 ANFD *anfd = anfds + fd;
1905 2414
1906 if (anfd->reify & EV__IOFDSET && anfd->head) 2415 if (anfd->reify & EV__IOFDSET && anfd->head)
… …
1920 } 2429 }
1921 } 2430 }
1922 } 2431 }
1923#endif 2432#endif
1924 2433
1925 for (i = 0; i < fdchangecnt; ++i) 2434 for (i = 0; i < changecnt; ++i)
1926 { 2435 {
1927 int fd = fdchanges [i]; 2436 int fd = fdchanges [i];
1928 ANFD *anfd = anfds + fd; 2437 ANFD *anfd = anfds + fd;
1929 ev_io *w; 2438 ev_io *w;
1930 2439
1931 unsigned char o_events = anfd->events; 2440 unsigned char o_events = anfd->events;
1932 unsigned char o_reify = anfd->reify; 2441 unsigned char o_reify = anfd->reify;
1933 2442
1934 anfd->reify = 0; 2443 anfd->reify = 0;
1935 2444
1936 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 2445 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
1937 { 2446 {
1938 anfd->events = 0; 2447 anfd->events = 0;
1939 2448
1940 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2449 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1941 anfd->events |= (unsigned char)w->events; 2450 anfd->events |= (unsigned char)w->events;
… …
1946 2455
1947 if (o_reify & EV__IOFDSET) 2456 if (o_reify & EV__IOFDSET)
1948 backend_modify (EV_A_ fd, o_events, anfd->events); 2457 backend_modify (EV_A_ fd, o_events, anfd->events);
1949 } 2458 }
1950 2459
2460 /* normally, fdchangecnt hasn't changed. if it has, then new fds have been added.
2461 * this is a rare case (see beginning comment in this function), so we copy them to the
2462 * front and hope the backend handles this case.
2463 */
2464 if (ecb_expect_false (fdchangecnt != changecnt))
2465 memmove (fdchanges, fdchanges + changecnt, (fdchangecnt - changecnt) * sizeof (*fdchanges));
2466
1951 fdchangecnt = 0; 2467 fdchangecnt -= changecnt;
1952} 2468}
1953 2469
1954/* something about the given fd changed */ 2470/* something about the given fd changed */
1955inline_size void 2471inline_size
2472void
1956fd_change (EV_P_ int fd, int flags) 2473fd_change (EV_P_ int fd, int flags)
1957{ 2474{
1958 unsigned char reify = anfds [fd].reify; 2475 unsigned char reify = anfds [fd].reify;
1959 anfds [fd].reify |= flags; 2476 anfds [fd].reify |= flags;
1960 2477
1961 if (expect_true (!reify)) 2478 if (ecb_expect_true (!reify))
1962 { 2479 {
1963 ++fdchangecnt; 2480 ++fdchangecnt;
1964 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2481 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
1965 fdchanges [fdchangecnt - 1] = fd; 2482 fdchanges [fdchangecnt - 1] = fd;
1966 } 2483 }
1967} 2484}
1968 2485
1969/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2486/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1970inline_speed void ecb_cold 2487inline_speed ecb_cold void
1971fd_kill (EV_P_ int fd) 2488fd_kill (EV_P_ int fd)
1972{ 2489{
1973 ev_io *w; 2490 ev_io *w;
1974 2491
1975 while ((w = (ev_io *)anfds [fd].head)) 2492 while ((w = (ev_io *)anfds [fd].head))
… …
1978 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2495 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1979 } 2496 }
1980} 2497}
1981 2498
1982/* check whether the given fd is actually valid, for error recovery */ 2499/* check whether the given fd is actually valid, for error recovery */
1983inline_size int ecb_cold 2500inline_size ecb_cold int
1984fd_valid (int fd) 2501fd_valid (int fd)
1985{ 2502{
1986#ifdef _WIN32 2503#ifdef _WIN32
1987 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2504 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1988#else 2505#else
1989 return fcntl (fd, F_GETFD) != -1; 2506 return fcntl (fd, F_GETFD) != -1;
1990#endif 2507#endif
1991} 2508}
1992 2509
1993/* called on EBADF to verify fds */ 2510/* called on EBADF to verify fds */
1994static void noinline ecb_cold 2511ecb_noinline ecb_cold
2512static void
1995fd_ebadf (EV_P) 2513fd_ebadf (EV_P)
1996{ 2514{
1997 int fd; 2515 int fd;
1998 2516
1999 for (fd = 0; fd < anfdmax; ++fd) 2517 for (fd = 0; fd < anfdmax; ++fd)
… …
2001 if (!fd_valid (fd) && errno == EBADF) 2519 if (!fd_valid (fd) && errno == EBADF)
2002 fd_kill (EV_A_ fd); 2520 fd_kill (EV_A_ fd);
2003} 2521}
2004 2522
2005/* called on ENOMEM in select/poll to kill some fds and retry */ 2523/* called on ENOMEM in select/poll to kill some fds and retry */
2006static void noinline ecb_cold 2524ecb_noinline ecb_cold
2525static void
2007fd_enomem (EV_P) 2526fd_enomem (EV_P)
2008{ 2527{
2009 int fd; 2528 int fd;
2010 2529
2011 for (fd = anfdmax; fd--; ) 2530 for (fd = anfdmax; fd--; )
… …
2015 break; 2534 break;
2016 } 2535 }
2017} 2536}
2018 2537
2019/* usually called after fork if backend needs to re-arm all fds from scratch */ 2538/* usually called after fork if backend needs to re-arm all fds from scratch */
2020static void noinline 2539ecb_noinline
2540static void
2021fd_rearm_all (EV_P) 2541fd_rearm_all (EV_P)
2022{ 2542{
2023 int fd; 2543 int fd;
2024 2544
2025 for (fd = 0; fd < anfdmax; ++fd) 2545 for (fd = 0; fd < anfdmax; ++fd)
… …
2078 ev_tstamp minat; 2598 ev_tstamp minat;
2079 ANHE *minpos; 2599 ANHE *minpos;
2080 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2600 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
2081 2601
2082 /* find minimum child */ 2602 /* find minimum child */
2083 if (expect_true (pos + DHEAP - 1 < E)) 2603 if (ecb_expect_true (pos + DHEAP - 1 < E))
2084 { 2604 {
2085 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2605 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
2086 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2606 if ( minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
2087 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2607 if ( minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
2088 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2608 if ( minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
2089 } 2609 }
2090 else if (pos < E) 2610 else if (pos < E)
2091 { 2611 {
2092 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2612 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
2093 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2613 if (pos + 1 < E && minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
2094 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2614 if (pos + 2 < E && minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
2095 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2615 if (pos + 3 < E && minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
2096 } 2616 }
2097 else 2617 else
2098 break; 2618 break;
2099 2619
2100 if (ANHE_at (he) <= minat) 2620 if (ANHE_at (he) <= minat)
… …
2108 2628
2109 heap [k] = he; 2629 heap [k] = he;
2110 ev_active (ANHE_w (he)) = k; 2630 ev_active (ANHE_w (he)) = k;
2111} 2631}
2112 2632
2113#else /* 4HEAP */ 2633#else /* not 4HEAP */
2114 2634
2115#define HEAP0 1 2635#define HEAP0 1
2116#define HPARENT(k) ((k) >> 1) 2636#define HPARENT(k) ((k) >> 1)
2117#define UPHEAP_DONE(p,k) (!(p)) 2637#define UPHEAP_DONE(p,k) (!(p))
2118 2638
… …
2190 upheap (heap, i + HEAP0); 2710 upheap (heap, i + HEAP0);
2191} 2711}
2192 2712
2193/*****************************************************************************/ 2713/*****************************************************************************/
2194 2714
2195/* associate signal watchers to a signal signal */ 2715/* associate signal watchers to a signal */
2196typedef struct 2716typedef struct
2197{ 2717{
2198 EV_ATOMIC_T pending; 2718 EV_ATOMIC_T pending;
2199#if EV_MULTIPLICITY 2719#if EV_MULTIPLICITY
2200 EV_P; 2720 EV_P;
… …
2206 2726
2207/*****************************************************************************/ 2727/*****************************************************************************/
2208 2728
2209#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2729#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2210 2730
2211static void noinline ecb_cold 2731ecb_noinline ecb_cold
2732static void
2212evpipe_init (EV_P) 2733evpipe_init (EV_P)
2213{ 2734{
2214 if (!ev_is_active (&pipe_w)) 2735 if (!ev_is_active (&pipe_w))
2215 { 2736 {
2216 int fds [2]; 2737 int fds [2];
… …
2256inline_speed void 2777inline_speed void
2257evpipe_write (EV_P_ EV_ATOMIC_T *flag) 2778evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2258{ 2779{
2259 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */ 2780 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2260 2781
2261 if (expect_true (*flag)) 2782 if (ecb_expect_true (*flag))
2262 return; 2783 return;
2263 2784
2264 *flag = 1; 2785 *flag = 1;
2265 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */ 2786 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2266 2787
… …
2287#endif 2808#endif
2288 { 2809 {
2289#ifdef _WIN32 2810#ifdef _WIN32
2290 WSABUF buf; 2811 WSABUF buf;
2291 DWORD sent; 2812 DWORD sent;
2292 buf.buf = &buf; 2813 buf.buf = (char *)&buf;
2293 buf.len = 1; 2814 buf.len = 1;
2294 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0); 2815 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2295#else 2816#else
2296 write (evpipe [1], &(evpipe [1]), 1); 2817 write (evpipe [1], &(evpipe [1]), 1);
2297#endif 2818#endif
… …
2343 sig_pending = 0; 2864 sig_pending = 0;
2344 2865
2345 ECB_MEMORY_FENCE; 2866 ECB_MEMORY_FENCE;
2346 2867
2347 for (i = EV_NSIG - 1; i--; ) 2868 for (i = EV_NSIG - 1; i--; )
2348 if (expect_false (signals [i].pending)) 2869 if (ecb_expect_false (signals [i].pending))
2349 ev_feed_signal_event (EV_A_ i + 1); 2870 ev_feed_signal_event (EV_A_ i + 1);
2350 } 2871 }
2351#endif 2872#endif
2352 2873
2353#if EV_ASYNC_ENABLE 2874#if EV_ASYNC_ENABLE
… …
2369} 2890}
2370 2891
2371/*****************************************************************************/ 2892/*****************************************************************************/
2372 2893
2373void 2894void
2374ev_feed_signal (int signum) EV_THROW 2895ev_feed_signal (int signum) EV_NOEXCEPT
2375{ 2896{
2376#if EV_MULTIPLICITY 2897#if EV_MULTIPLICITY
2377 EV_P; 2898 EV_P;
2378 ECB_MEMORY_FENCE_ACQUIRE; 2899 ECB_MEMORY_FENCE_ACQUIRE;
2379 EV_A = signals [signum - 1].loop; 2900 EV_A = signals [signum - 1].loop;
… …
2394#endif 2915#endif
2395 2916
2396 ev_feed_signal (signum); 2917 ev_feed_signal (signum);
2397} 2918}
2398 2919
2399void noinline 2920ecb_noinline
2921void
2400ev_feed_signal_event (EV_P_ int signum) EV_THROW 2922ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
2401{ 2923{
2402 WL w; 2924 WL w;
2403 2925
2404 if (expect_false (signum <= 0 || signum >= EV_NSIG)) 2926 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
2405 return; 2927 return;
2406 2928
2407 --signum; 2929 --signum;
2408 2930
2409#if EV_MULTIPLICITY 2931#if EV_MULTIPLICITY
2410 /* it is permissible to try to feed a signal to the wrong loop */ 2932 /* it is permissible to try to feed a signal to the wrong loop */
2411 /* or, likely more useful, feeding a signal nobody is waiting for */ 2933 /* or, likely more useful, feeding a signal nobody is waiting for */
2412 2934
2413 if (expect_false (signals [signum].loop != EV_A)) 2935 if (ecb_expect_false (signals [signum].loop != EV_A))
2414 return; 2936 return;
2415#endif 2937#endif
2416 2938
2417 signals [signum].pending = 0; 2939 signals [signum].pending = 0;
2418 ECB_MEMORY_FENCE_RELEASE; 2940 ECB_MEMORY_FENCE_RELEASE;
… …
2502 3024
2503#endif 3025#endif
2504 3026
2505/*****************************************************************************/ 3027/*****************************************************************************/
2506 3028
3029#if EV_USE_TIMERFD
3030
3031static void periodics_reschedule (EV_P);
3032
3033static void
3034timerfdcb (EV_P_ ev_io *iow, int revents)
3035{
3036 struct itimerspec its = { 0 };
3037
3038 its.it_value.tv_sec = ev_rt_now + (int)MAX_BLOCKTIME2;
3039 timerfd_settime (timerfd, TFD_TIMER_ABSTIME | TFD_TIMER_CANCEL_ON_SET, &its, 0);
3040
3041 ev_rt_now = ev_time ();
3042 /* periodics_reschedule only needs ev_rt_now */
3043 /* but maybe in the future we want the full treatment. */
3044 /*
3045 now_floor = EV_TS_CONST (0.);
3046 time_update (EV_A_ EV_TSTAMP_HUGE);
3047 */
3048 periodics_reschedule (EV_A);
3049}
3050
3051ecb_noinline ecb_cold
3052static void
3053evtimerfd_init (EV_P)
3054{
3055 if (!ev_is_active (&timerfd_w))
3056 {
3057 timerfd = timerfd_create (CLOCK_REALTIME, TFD_NONBLOCK | TFD_CLOEXEC);
3058
3059 if (timerfd >= 0)
3060 {
3061 fd_intern (timerfd); /* just to be sure */
3062
3063 ev_io_init (&timerfd_w, timerfdcb, timerfd, EV_READ);
3064 ev_set_priority (&timerfd_w, EV_MINPRI);
3065 ev_io_start (EV_A_ &timerfd_w);
3066 ev_unref (EV_A); /* watcher should not keep loop alive */
3067
3068 /* (re-) arm timer */
3069 timerfdcb (EV_A_ 0, 0);
3070 }
3071 }
3072}
3073
3074#endif
3075
3076/*****************************************************************************/
3077
2507#if EV_USE_IOCP 3078#if EV_USE_IOCP
2508# include "ev_iocp.c" 3079# include "ev_iocp.c"
2509#endif 3080#endif
2510#if EV_USE_PORT 3081#if EV_USE_PORT
2511# include "ev_port.c" 3082# include "ev_port.c"
… …
2514# include "ev_kqueue.c" 3085# include "ev_kqueue.c"
2515#endif 3086#endif
2516#if EV_USE_EPOLL 3087#if EV_USE_EPOLL
2517# include "ev_epoll.c" 3088# include "ev_epoll.c"
2518#endif 3089#endif
3090#if EV_USE_LINUXAIO
3091# include "ev_linuxaio.c"
3092#endif
3093#if EV_USE_IOURING
3094# include "ev_iouring.c"
3095#endif
2519#if EV_USE_POLL 3096#if EV_USE_POLL
2520# include "ev_poll.c" 3097# include "ev_poll.c"
2521#endif 3098#endif
2522#if EV_USE_SELECT 3099#if EV_USE_SELECT
2523# include "ev_select.c" 3100# include "ev_select.c"
2524#endif 3101#endif
2525 3102
2526int ecb_cold 3103ecb_cold int
2527ev_version_major (void) EV_THROW 3104ev_version_major (void) EV_NOEXCEPT
2528{ 3105{
2529 return EV_VERSION_MAJOR; 3106 return EV_VERSION_MAJOR;
2530} 3107}
2531 3108
2532int ecb_cold 3109ecb_cold int
2533ev_version_minor (void) EV_THROW 3110ev_version_minor (void) EV_NOEXCEPT
2534{ 3111{
2535 return EV_VERSION_MINOR; 3112 return EV_VERSION_MINOR;
2536} 3113}
2537 3114
2538/* return true if we are running with elevated privileges and should ignore env variables */ 3115/* return true if we are running with elevated privileges and should ignore env variables */
2539int inline_size ecb_cold 3116inline_size ecb_cold int
2540enable_secure (void) 3117enable_secure (void)
2541{ 3118{
2542#ifdef _WIN32 3119#ifdef _WIN32
2543 return 0; 3120 return 0;
2544#else 3121#else
2545 return getuid () != geteuid () 3122 return getuid () != geteuid ()
2546 || getgid () != getegid (); 3123 || getgid () != getegid ();
2547#endif 3124#endif
2548} 3125}
2549 3126
2550unsigned int ecb_cold 3127ecb_cold
3128unsigned int
2551ev_supported_backends (void) EV_THROW 3129ev_supported_backends (void) EV_NOEXCEPT
2552{ 3130{
2553 unsigned int flags = 0; 3131 unsigned int flags = 0;
2554 3132
2555 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 3133 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2556 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 3134 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
2557 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 3135 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2558 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 3136 if (EV_USE_LINUXAIO ) flags |= EVBACKEND_LINUXAIO;
2559 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 3137 if (EV_USE_IOURING && ev_linux_version () >= 0x050601) flags |= EVBACKEND_IOURING; /* 5.6.1+ */
2560 3138 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
3139 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
3140
2561 return flags; 3141 return flags;
2562} 3142}
2563 3143
2564unsigned int ecb_cold 3144ecb_cold
3145unsigned int
2565ev_recommended_backends (void) EV_THROW 3146ev_recommended_backends (void) EV_NOEXCEPT
2566{ 3147{
2567 unsigned int flags = ev_supported_backends (); 3148 unsigned int flags = ev_supported_backends ();
2568 3149
2569#ifndef __NetBSD__ 3150#ifndef __NetBSD__
2570 /* kqueue is borked on everything but netbsd apparently */ 3151 /* kqueue is borked on everything but netbsd apparently */
… …
2578#endif 3159#endif
2579#ifdef __FreeBSD__ 3160#ifdef __FreeBSD__
2580 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ 3161 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2581#endif 3162#endif
2582 3163
3164 /* TODO: linuxaio is very experimental */
3165#if !EV_RECOMMEND_LINUXAIO
3166 flags &= ~EVBACKEND_LINUXAIO;
3167#endif
3168 /* TODO: linuxaio is super experimental */
3169#if !EV_RECOMMEND_IOURING
3170 flags &= ~EVBACKEND_IOURING;
3171#endif
3172
2583 return flags; 3173 return flags;
2584} 3174}
2585 3175
2586unsigned int ecb_cold 3176ecb_cold
3177unsigned int
2587ev_embeddable_backends (void) EV_THROW 3178ev_embeddable_backends (void) EV_NOEXCEPT
2588{ 3179{
2589 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 3180 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT | EVBACKEND_IOURING;
2590 3181
2591 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 3182 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2592 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 3183 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2593 flags &= ~EVBACKEND_EPOLL; 3184 flags &= ~EVBACKEND_EPOLL;
2594 3185
3186 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
3187
2595 return flags; 3188 return flags;
2596} 3189}
2597 3190
2598unsigned int 3191unsigned int
2599ev_backend (EV_P) EV_THROW 3192ev_backend (EV_P) EV_NOEXCEPT
2600{ 3193{
2601 return backend; 3194 return backend;
2602} 3195}
2603 3196
2604#if EV_FEATURE_API 3197#if EV_FEATURE_API
2605unsigned int 3198unsigned int
2606ev_iteration (EV_P) EV_THROW 3199ev_iteration (EV_P) EV_NOEXCEPT
2607{ 3200{
2608 return loop_count; 3201 return loop_count;
2609} 3202}
2610 3203
2611unsigned int 3204unsigned int
2612ev_depth (EV_P) EV_THROW 3205ev_depth (EV_P) EV_NOEXCEPT
2613{ 3206{
2614 return loop_depth; 3207 return loop_depth;
2615} 3208}
2616 3209
2617void 3210void
2618ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW 3211ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2619{ 3212{
2620 io_blocktime = interval; 3213 io_blocktime = interval;
2621} 3214}
2622 3215
2623void 3216void
2624ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW 3217ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2625{ 3218{
2626 timeout_blocktime = interval; 3219 timeout_blocktime = interval;
2627} 3220}
2628 3221
2629void 3222void
2630ev_set_userdata (EV_P_ void *data) EV_THROW 3223ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2631{ 3224{
2632 userdata = data; 3225 userdata = data;
2633} 3226}
2634 3227
2635void * 3228void *
2636ev_userdata (EV_P) EV_THROW 3229ev_userdata (EV_P) EV_NOEXCEPT
2637{ 3230{
2638 return userdata; 3231 return userdata;
2639} 3232}
2640 3233
2641void 3234void
2642ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW 3235ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
2643{ 3236{
2644 invoke_cb = invoke_pending_cb; 3237 invoke_cb = invoke_pending_cb;
2645} 3238}
2646 3239
2647void 3240void
2648ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW 3241ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
2649{ 3242{
2650 release_cb = release; 3243 release_cb = release;
2651 acquire_cb = acquire; 3244 acquire_cb = acquire;
2652} 3245}
2653#endif 3246#endif
2654 3247
2655/* initialise a loop structure, must be zero-initialised */ 3248/* initialise a loop structure, must be zero-initialised */
2656static void noinline ecb_cold 3249ecb_noinline ecb_cold
3250static void
2657loop_init (EV_P_ unsigned int flags) EV_THROW 3251loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
2658{ 3252{
2659 if (!backend) 3253 if (!backend)
2660 { 3254 {
2661 origflags = flags; 3255 origflags = flags;
2662 3256
… …
2715 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3309 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2716#endif 3310#endif
2717#if EV_USE_SIGNALFD 3311#if EV_USE_SIGNALFD
2718 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 3312 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2719#endif 3313#endif
3314#if EV_USE_TIMERFD
3315 timerfd = flags & EVFLAG_NOTIMERFD ? -1 : -2;
3316#endif
2720 3317
2721 if (!(flags & EVBACKEND_MASK)) 3318 if (!(flags & EVBACKEND_MASK))
2722 flags |= ev_recommended_backends (); 3319 flags |= ev_recommended_backends ();
2723 3320
2724#if EV_USE_IOCP 3321#if EV_USE_IOCP
2725 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 3322 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2726#endif 3323#endif
2727#if EV_USE_PORT 3324#if EV_USE_PORT
2728 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3325 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
2729#endif 3326#endif
2730#if EV_USE_KQUEUE 3327#if EV_USE_KQUEUE
2731 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 3328 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
3329#endif
3330#if EV_USE_IOURING
3331 if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
3332#endif
3333#if EV_USE_LINUXAIO
3334 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
2732#endif 3335#endif
2733#if EV_USE_EPOLL 3336#if EV_USE_EPOLL
2734 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3337 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
2735#endif 3338#endif
2736#if EV_USE_POLL 3339#if EV_USE_POLL
2737 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3340 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
2738#endif 3341#endif
2739#if EV_USE_SELECT 3342#if EV_USE_SELECT
2740 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3343 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
2741#endif 3344#endif
2742 3345
2743 ev_prepare_init (&pending_w, pendingcb); 3346 ev_prepare_init (&pending_w, pendingcb);
2744 3347
2745#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3348#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
2748#endif 3351#endif
2749 } 3352 }
2750} 3353}
2751 3354
2752/* free up a loop structure */ 3355/* free up a loop structure */
2753void ecb_cold 3356ecb_cold
3357void
2754ev_loop_destroy (EV_P) 3358ev_loop_destroy (EV_P)
2755{ 3359{
2756 int i; 3360 int i;
2757 3361
2758#if EV_MULTIPLICITY 3362#if EV_MULTIPLICITY
… …
2761 return; 3365 return;
2762#endif 3366#endif
2763 3367
2764#if EV_CLEANUP_ENABLE 3368#if EV_CLEANUP_ENABLE
2765 /* queue cleanup watchers (and execute them) */ 3369 /* queue cleanup watchers (and execute them) */
2766 if (expect_false (cleanupcnt)) 3370 if (ecb_expect_false (cleanupcnt))
2767 { 3371 {
2768 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); 3372 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2769 EV_INVOKE_PENDING; 3373 EV_INVOKE_PENDING;
2770 } 3374 }
2771#endif 3375#endif
… …
2790#if EV_USE_SIGNALFD 3394#if EV_USE_SIGNALFD
2791 if (ev_is_active (&sigfd_w)) 3395 if (ev_is_active (&sigfd_w))
2792 close (sigfd); 3396 close (sigfd);
2793#endif 3397#endif
2794 3398
3399#if EV_USE_TIMERFD
3400 if (ev_is_active (&timerfd_w))
3401 close (timerfd);
3402#endif
3403
2795#if EV_USE_INOTIFY 3404#if EV_USE_INOTIFY
2796 if (fs_fd >= 0) 3405 if (fs_fd >= 0)
2797 close (fs_fd); 3406 close (fs_fd);
2798#endif 3407#endif
2799 3408
2800 if (backend_fd >= 0) 3409 if (backend_fd >= 0)
2801 close (backend_fd); 3410 close (backend_fd);
2802 3411
2803#if EV_USE_IOCP 3412#if EV_USE_IOCP
2804 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3413 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2805#endif 3414#endif
2806#if EV_USE_PORT 3415#if EV_USE_PORT
2807 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3416 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
2808#endif 3417#endif
2809#if EV_USE_KQUEUE 3418#if EV_USE_KQUEUE
2810 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3419 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3420#endif
3421#if EV_USE_IOURING
3422 if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
3423#endif
3424#if EV_USE_LINUXAIO
3425 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
2811#endif 3426#endif
2812#if EV_USE_EPOLL 3427#if EV_USE_EPOLL
2813 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3428 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
2814#endif 3429#endif
2815#if EV_USE_POLL 3430#if EV_USE_POLL
2816 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3431 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
2817#endif 3432#endif
2818#if EV_USE_SELECT 3433#if EV_USE_SELECT
2819 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3434 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
2820#endif 3435#endif
2821 3436
2822 for (i = NUMPRI; i--; ) 3437 for (i = NUMPRI; i--; )
2823 { 3438 {
2824 array_free (pending, [i]); 3439 array_free (pending, [i]);
… …
2866 3481
2867inline_size void 3482inline_size void
2868loop_fork (EV_P) 3483loop_fork (EV_P)
2869{ 3484{
2870#if EV_USE_PORT 3485#if EV_USE_PORT
2871 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3486 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
2872#endif 3487#endif
2873#if EV_USE_KQUEUE 3488#if EV_USE_KQUEUE
2874 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3489 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3490#endif
3491#if EV_USE_IOURING
3492 if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
3493#endif
3494#if EV_USE_LINUXAIO
3495 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
2875#endif 3496#endif
2876#if EV_USE_EPOLL 3497#if EV_USE_EPOLL
2877 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3498 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
2878#endif 3499#endif
2879#if EV_USE_INOTIFY 3500#if EV_USE_INOTIFY
2880 infy_fork (EV_A); 3501 infy_fork (EV_A);
2881#endif 3502#endif
2882 3503
3504 if (postfork != 2)
3505 {
3506 #if EV_USE_SIGNALFD
3507 /* surprisingly, nothing needs to be done for signalfd, accoridng to docs, it does the right thing on fork */
3508 #endif
3509
3510 #if EV_USE_TIMERFD
3511 if (ev_is_active (&timerfd_w))
3512 {
3513 ev_ref (EV_A);
3514 ev_io_stop (EV_A_ &timerfd_w);
3515
3516 close (timerfd);
3517 timerfd = -2;
3518
3519 evtimerfd_init (EV_A);
3520 /* reschedule periodics, in case we missed something */
3521 ev_feed_event (EV_A_ &timerfd_w, EV_CUSTOM);
3522 }
3523 #endif
3524
2883#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3525 #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2884 if (ev_is_active (&pipe_w)) 3526 if (ev_is_active (&pipe_w))
2885 { 3527 {
2886 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 3528 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2887 3529
2888 ev_ref (EV_A); 3530 ev_ref (EV_A);
2889 ev_io_stop (EV_A_ &pipe_w); 3531 ev_io_stop (EV_A_ &pipe_w);
2890 3532
2891 if (evpipe [0] >= 0) 3533 if (evpipe [0] >= 0)
2892 EV_WIN32_CLOSE_FD (evpipe [0]); 3534 EV_WIN32_CLOSE_FD (evpipe [0]);
2893 3535
2894 evpipe_init (EV_A); 3536 evpipe_init (EV_A);
2895 /* iterate over everything, in case we missed something before */ 3537 /* iterate over everything, in case we missed something before */
2896 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3538 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3539 }
3540 #endif
2897 } 3541 }
2898#endif
2899 3542
2900 postfork = 0; 3543 postfork = 0;
2901} 3544}
2902 3545
2903#if EV_MULTIPLICITY 3546#if EV_MULTIPLICITY
2904 3547
3548ecb_cold
2905struct ev_loop * ecb_cold 3549struct ev_loop *
2906ev_loop_new (unsigned int flags) EV_THROW 3550ev_loop_new (unsigned int flags) EV_NOEXCEPT
2907{ 3551{
2908 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3552 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2909 3553
2910 memset (EV_A, 0, sizeof (struct ev_loop)); 3554 memset (EV_A, 0, sizeof (struct ev_loop));
2911 loop_init (EV_A_ flags); 3555 loop_init (EV_A_ flags);
… …
2918} 3562}
2919 3563
2920#endif /* multiplicity */ 3564#endif /* multiplicity */
2921 3565
2922#if EV_VERIFY 3566#if EV_VERIFY
2923static void noinline ecb_cold 3567ecb_noinline ecb_cold
3568static void
2924verify_watcher (EV_P_ W w) 3569verify_watcher (EV_P_ W w)
2925{ 3570{
2926 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3571 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2927 3572
2928 if (w->pending) 3573 if (w->pending)
2929 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3574 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2930} 3575}
2931 3576
2932static void noinline ecb_cold 3577ecb_noinline ecb_cold
3578static void
2933verify_heap (EV_P_ ANHE *heap, int N) 3579verify_heap (EV_P_ ANHE *heap, int N)
2934{ 3580{
2935 int i; 3581 int i;
2936 3582
2937 for (i = HEAP0; i < N + HEAP0; ++i) 3583 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2942 3588
2943 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3589 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2944 } 3590 }
2945} 3591}
2946 3592
2947static void noinline ecb_cold 3593ecb_noinline ecb_cold
3594static void
2948array_verify (EV_P_ W *ws, int cnt) 3595array_verify (EV_P_ W *ws, int cnt)
2949{ 3596{
2950 while (cnt--) 3597 while (cnt--)
2951 { 3598 {
2952 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3599 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2955} 3602}
2956#endif 3603#endif
2957 3604
2958#if EV_FEATURE_API 3605#if EV_FEATURE_API
2959void ecb_cold 3606void ecb_cold
2960ev_verify (EV_P) EV_THROW 3607ev_verify (EV_P) EV_NOEXCEPT
2961{ 3608{
2962#if EV_VERIFY 3609#if EV_VERIFY
2963 int i; 3610 int i;
2964 WL w, w2; 3611 WL w, w2;
2965 3612
… …
3041#endif 3688#endif
3042} 3689}
3043#endif 3690#endif
3044 3691
3045#if EV_MULTIPLICITY 3692#if EV_MULTIPLICITY
3693ecb_cold
3046struct ev_loop * ecb_cold 3694struct ev_loop *
3047#else 3695#else
3048int 3696int
3049#endif 3697#endif
3050ev_default_loop (unsigned int flags) EV_THROW 3698ev_default_loop (unsigned int flags) EV_NOEXCEPT
3051{ 3699{
3052 if (!ev_default_loop_ptr) 3700 if (!ev_default_loop_ptr)
3053 { 3701 {
3054#if EV_MULTIPLICITY 3702#if EV_MULTIPLICITY
3055 EV_P = ev_default_loop_ptr = &default_loop_struct; 3703 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
3074 3722
3075 return ev_default_loop_ptr; 3723 return ev_default_loop_ptr;
3076} 3724}
3077 3725
3078void 3726void
3079ev_loop_fork (EV_P) EV_THROW 3727ev_loop_fork (EV_P) EV_NOEXCEPT
3080{ 3728{
3081 postfork = 1; 3729 postfork = 1;
3082} 3730}
3083 3731
3084/*****************************************************************************/ 3732/*****************************************************************************/
… …
3088{ 3736{
3089 EV_CB_INVOKE ((W)w, revents); 3737 EV_CB_INVOKE ((W)w, revents);
3090} 3738}
3091 3739
3092unsigned int 3740unsigned int
3093ev_pending_count (EV_P) EV_THROW 3741ev_pending_count (EV_P) EV_NOEXCEPT
3094{ 3742{
3095 int pri; 3743 int pri;
3096 unsigned int count = 0; 3744 unsigned int count = 0;
3097 3745
3098 for (pri = NUMPRI; pri--; ) 3746 for (pri = NUMPRI; pri--; )
3099 count += pendingcnt [pri]; 3747 count += pendingcnt [pri];
3100 3748
3101 return count; 3749 return count;
3102} 3750}
3103 3751
3104void noinline 3752ecb_noinline
3753void
3105ev_invoke_pending (EV_P) 3754ev_invoke_pending (EV_P)
3106{ 3755{
3107 pendingpri = NUMPRI; 3756 pendingpri = NUMPRI;
3108 3757
3109 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */ 3758 do
3110 { 3759 {
3111 --pendingpri; 3760 --pendingpri;
3112 3761
3762 /* pendingpri possibly gets modified in the inner loop */
3113 while (pendingcnt [pendingpri]) 3763 while (pendingcnt [pendingpri])
3114 { 3764 {
3115 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri]; 3765 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
3116 3766
3117 p->w->pending = 0; 3767 p->w->pending = 0;
3118 EV_CB_INVOKE (p->w, p->events); 3768 EV_CB_INVOKE (p->w, p->events);
3119 EV_FREQUENT_CHECK; 3769 EV_FREQUENT_CHECK;
3120 } 3770 }
3121 } 3771 }
3772 while (pendingpri);
3122} 3773}
3123 3774
3124#if EV_IDLE_ENABLE 3775#if EV_IDLE_ENABLE
3125/* make idle watchers pending. this handles the "call-idle */ 3776/* make idle watchers pending. this handles the "call-idle */
3126/* only when higher priorities are idle" logic */ 3777/* only when higher priorities are idle" logic */
3127inline_size void 3778inline_size void
3128idle_reify (EV_P) 3779idle_reify (EV_P)
3129{ 3780{
3130 if (expect_false (idleall)) 3781 if (ecb_expect_false (idleall))
3131 { 3782 {
3132 int pri; 3783 int pri;
3133 3784
3134 for (pri = NUMPRI; pri--; ) 3785 for (pri = NUMPRI; pri--; )
3135 { 3786 {
… …
3165 { 3816 {
3166 ev_at (w) += w->repeat; 3817 ev_at (w) += w->repeat;
3167 if (ev_at (w) < mn_now) 3818 if (ev_at (w) < mn_now)
3168 ev_at (w) = mn_now; 3819 ev_at (w) = mn_now;
3169 3820
3170 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 3821 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > EV_TS_CONST (0.)));
3171 3822
3172 ANHE_at_cache (timers [HEAP0]); 3823 ANHE_at_cache (timers [HEAP0]);
3173 downheap (timers, timercnt, HEAP0); 3824 downheap (timers, timercnt, HEAP0);
3174 } 3825 }
3175 else 3826 else
… …
3184 } 3835 }
3185} 3836}
3186 3837
3187#if EV_PERIODIC_ENABLE 3838#if EV_PERIODIC_ENABLE
3188 3839
3189static void noinline 3840ecb_noinline
3841static void
3190periodic_recalc (EV_P_ ev_periodic *w) 3842periodic_recalc (EV_P_ ev_periodic *w)
3191{ 3843{
3192 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3844 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3193 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); 3845 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3194 3846
… …
3196 while (at <= ev_rt_now) 3848 while (at <= ev_rt_now)
3197 { 3849 {
3198 ev_tstamp nat = at + w->interval; 3850 ev_tstamp nat = at + w->interval;
3199 3851
3200 /* when resolution fails us, we use ev_rt_now */ 3852 /* when resolution fails us, we use ev_rt_now */
3201 if (expect_false (nat == at)) 3853 if (ecb_expect_false (nat == at))
3202 { 3854 {
3203 at = ev_rt_now; 3855 at = ev_rt_now;
3204 break; 3856 break;
3205 } 3857 }
3206 3858
… …
3252 } 3904 }
3253} 3905}
3254 3906
3255/* simply recalculate all periodics */ 3907/* simply recalculate all periodics */
3256/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3908/* TODO: maybe ensure that at least one event happens when jumping forward? */
3257static void noinline ecb_cold 3909ecb_noinline ecb_cold
3910static void
3258periodics_reschedule (EV_P) 3911periodics_reschedule (EV_P)
3259{ 3912{
3260 int i; 3913 int i;
3261 3914
3262 /* adjust periodics after time jump */ 3915 /* adjust periodics after time jump */
… …
3275 reheap (periodics, periodiccnt); 3928 reheap (periodics, periodiccnt);
3276} 3929}
3277#endif 3930#endif
3278 3931
3279/* adjust all timers by a given offset */ 3932/* adjust all timers by a given offset */
3280static void noinline ecb_cold 3933ecb_noinline ecb_cold
3934static void
3281timers_reschedule (EV_P_ ev_tstamp adjust) 3935timers_reschedule (EV_P_ ev_tstamp adjust)
3282{ 3936{
3283 int i; 3937 int i;
3284 3938
3285 for (i = 0; i < timercnt; ++i) 3939 for (i = 0; i < timercnt; ++i)
… …
3294/* also detect if there was a timejump, and act accordingly */ 3948/* also detect if there was a timejump, and act accordingly */
3295inline_speed void 3949inline_speed void
3296time_update (EV_P_ ev_tstamp max_block) 3950time_update (EV_P_ ev_tstamp max_block)
3297{ 3951{
3298#if EV_USE_MONOTONIC 3952#if EV_USE_MONOTONIC
3299 if (expect_true (have_monotonic)) 3953 if (ecb_expect_true (have_monotonic))
3300 { 3954 {
3301 int i; 3955 int i;
3302 ev_tstamp odiff = rtmn_diff; 3956 ev_tstamp odiff = rtmn_diff;
3303 3957
3304 mn_now = get_clock (); 3958 mn_now = get_clock ();
3305 3959
3306 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3960 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
3307 /* interpolate in the meantime */ 3961 /* interpolate in the meantime */
3308 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3962 if (ecb_expect_true (mn_now - now_floor < EV_TS_CONST (MIN_TIMEJUMP * .5)))
3309 { 3963 {
3310 ev_rt_now = rtmn_diff + mn_now; 3964 ev_rt_now = rtmn_diff + mn_now;
3311 return; 3965 return;
3312 } 3966 }
3313 3967
… …
3327 ev_tstamp diff; 3981 ev_tstamp diff;
3328 rtmn_diff = ev_rt_now - mn_now; 3982 rtmn_diff = ev_rt_now - mn_now;
3329 3983
3330 diff = odiff - rtmn_diff; 3984 diff = odiff - rtmn_diff;
3331 3985
3332 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP)) 3986 if (ecb_expect_true ((diff < EV_TS_CONST (0.) ? -diff : diff) < EV_TS_CONST (MIN_TIMEJUMP)))
3333 return; /* all is well */ 3987 return; /* all is well */
3334 3988
3335 ev_rt_now = ev_time (); 3989 ev_rt_now = ev_time ();
3336 mn_now = get_clock (); 3990 mn_now = get_clock ();
3337 now_floor = mn_now; 3991 now_floor = mn_now;
… …
3346 else 4000 else
3347#endif 4001#endif
3348 { 4002 {
3349 ev_rt_now = ev_time (); 4003 ev_rt_now = ev_time ();
3350 4004
3351 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 4005 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + EV_TS_CONST (MIN_TIMEJUMP)))
3352 { 4006 {
3353 /* adjust timers. this is easy, as the offset is the same for all of them */ 4007 /* adjust timers. this is easy, as the offset is the same for all of them */
3354 timers_reschedule (EV_A_ ev_rt_now - mn_now); 4008 timers_reschedule (EV_A_ ev_rt_now - mn_now);
3355#if EV_PERIODIC_ENABLE 4009#if EV_PERIODIC_ENABLE
3356 periodics_reschedule (EV_A); 4010 periodics_reschedule (EV_A);
… …
3379#if EV_VERIFY >= 2 4033#if EV_VERIFY >= 2
3380 ev_verify (EV_A); 4034 ev_verify (EV_A);
3381#endif 4035#endif
3382 4036
3383#ifndef _WIN32 4037#ifndef _WIN32
3384 if (expect_false (curpid)) /* penalise the forking check even more */ 4038 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
3385 if (expect_false (getpid () != curpid)) 4039 if (ecb_expect_false (getpid () != curpid))
3386 { 4040 {
3387 curpid = getpid (); 4041 curpid = getpid ();
3388 postfork = 1; 4042 postfork = 1;
3389 } 4043 }
3390#endif 4044#endif
3391 4045
3392#if EV_FORK_ENABLE 4046#if EV_FORK_ENABLE
3393 /* we might have forked, so queue fork handlers */ 4047 /* we might have forked, so queue fork handlers */
3394 if (expect_false (postfork)) 4048 if (ecb_expect_false (postfork))
3395 if (forkcnt) 4049 if (forkcnt)
3396 { 4050 {
3397 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 4051 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
3398 EV_INVOKE_PENDING; 4052 EV_INVOKE_PENDING;
3399 } 4053 }
3400#endif 4054#endif
3401 4055
3402#if EV_PREPARE_ENABLE 4056#if EV_PREPARE_ENABLE
3403 /* queue prepare watchers (and execute them) */ 4057 /* queue prepare watchers (and execute them) */
3404 if (expect_false (preparecnt)) 4058 if (ecb_expect_false (preparecnt))
3405 { 4059 {
3406 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 4060 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
3407 EV_INVOKE_PENDING; 4061 EV_INVOKE_PENDING;
3408 } 4062 }
3409#endif 4063#endif
3410 4064
3411 if (expect_false (loop_done)) 4065 if (ecb_expect_false (loop_done))
3412 break; 4066 break;
3413 4067
3414 /* we might have forked, so reify kernel state if necessary */ 4068 /* we might have forked, so reify kernel state if necessary */
3415 if (expect_false (postfork)) 4069 if (ecb_expect_false (postfork))
3416 loop_fork (EV_A); 4070 loop_fork (EV_A);
3417 4071
3418 /* update fd-related kernel structures */ 4072 /* update fd-related kernel structures */
3419 fd_reify (EV_A); 4073 fd_reify (EV_A);
3420 4074
… …
3425 4079
3426 /* remember old timestamp for io_blocktime calculation */ 4080 /* remember old timestamp for io_blocktime calculation */
3427 ev_tstamp prev_mn_now = mn_now; 4081 ev_tstamp prev_mn_now = mn_now;
3428 4082
3429 /* update time to cancel out callback processing overhead */ 4083 /* update time to cancel out callback processing overhead */
3430 time_update (EV_A_ 1e100); 4084 time_update (EV_A_ EV_TS_CONST (EV_TSTAMP_HUGE));
3431 4085
3432 /* from now on, we want a pipe-wake-up */ 4086 /* from now on, we want a pipe-wake-up */
3433 pipe_write_wanted = 1; 4087 pipe_write_wanted = 1;
3434 4088
3435 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */ 4089 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3436 4090
3437 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) 4091 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
3438 { 4092 {
3439 waittime = MAX_BLOCKTIME; 4093 waittime = EV_TS_CONST (MAX_BLOCKTIME);
4094
4095#if EV_USE_TIMERFD
4096 /* sleep a lot longer when we can reliably detect timejumps */
4097 if (ecb_expect_true (timerfd >= 0))
4098 waittime = EV_TS_CONST (MAX_BLOCKTIME2);
4099#endif
3440 4100
3441 if (timercnt) 4101 if (timercnt)
3442 { 4102 {
3443 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now; 4103 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
3444 if (waittime > to) waittime = to; 4104 if (waittime > to) waittime = to;
… …
3451 if (waittime > to) waittime = to; 4111 if (waittime > to) waittime = to;
3452 } 4112 }
3453#endif 4113#endif
3454 4114
3455 /* don't let timeouts decrease the waittime below timeout_blocktime */ 4115 /* don't let timeouts decrease the waittime below timeout_blocktime */
3456 if (expect_false (waittime < timeout_blocktime)) 4116 if (ecb_expect_false (waittime < timeout_blocktime))
3457 waittime = timeout_blocktime; 4117 waittime = timeout_blocktime;
3458 4118
3459 /* at this point, we NEED to wait, so we have to ensure */ 4119 /* now there are two more special cases left, either we have
3460 /* to pass a minimum nonzero value to the backend */ 4120 * already-expired timers, so we should not sleep, or we have timers
4121 * that expire very soon, in which case we need to wait for a minimum
4122 * amount of time for some event loop backends.
4123 */
3461 if (expect_false (waittime < backend_mintime)) 4124 if (ecb_expect_false (waittime < backend_mintime))
4125 waittime = waittime <= EV_TS_CONST (0.)
4126 ? EV_TS_CONST (0.)
3462 waittime = backend_mintime; 4127 : backend_mintime;
3463 4128
3464 /* extra check because io_blocktime is commonly 0 */ 4129 /* extra check because io_blocktime is commonly 0 */
3465 if (expect_false (io_blocktime)) 4130 if (ecb_expect_false (io_blocktime))
3466 { 4131 {
3467 sleeptime = io_blocktime - (mn_now - prev_mn_now); 4132 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3468 4133
3469 if (sleeptime > waittime - backend_mintime) 4134 if (sleeptime > waittime - backend_mintime)
3470 sleeptime = waittime - backend_mintime; 4135 sleeptime = waittime - backend_mintime;
3471 4136
3472 if (expect_true (sleeptime > 0.)) 4137 if (ecb_expect_true (sleeptime > EV_TS_CONST (0.)))
3473 { 4138 {
3474 ev_sleep (sleeptime); 4139 ev_sleep (sleeptime);
3475 waittime -= sleeptime; 4140 waittime -= sleeptime;
3476 } 4141 }
3477 } 4142 }
… …
3491 { 4156 {
3492 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 4157 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3493 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 4158 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3494 } 4159 }
3495 4160
3496
3497 /* update ev_rt_now, do magic */ 4161 /* update ev_rt_now, do magic */
3498 time_update (EV_A_ waittime + sleeptime); 4162 time_update (EV_A_ waittime + sleeptime);
3499 } 4163 }
3500 4164
3501 /* queue pending timers and reschedule them */ 4165 /* queue pending timers and reschedule them */
… …
3509 idle_reify (EV_A); 4173 idle_reify (EV_A);
3510#endif 4174#endif
3511 4175
3512#if EV_CHECK_ENABLE 4176#if EV_CHECK_ENABLE
3513 /* queue check watchers, to be executed first */ 4177 /* queue check watchers, to be executed first */
3514 if (expect_false (checkcnt)) 4178 if (ecb_expect_false (checkcnt))
3515 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 4179 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3516#endif 4180#endif
3517 4181
3518 EV_INVOKE_PENDING; 4182 EV_INVOKE_PENDING;
3519 } 4183 }
3520 while (expect_true ( 4184 while (ecb_expect_true (
3521 activecnt 4185 activecnt
3522 && !loop_done 4186 && !loop_done
3523 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) 4187 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
3524 )); 4188 ));
3525 4189
… …
3532 4196
3533 return activecnt; 4197 return activecnt;
3534} 4198}
3535 4199
3536void 4200void
3537ev_break (EV_P_ int how) EV_THROW 4201ev_break (EV_P_ int how) EV_NOEXCEPT
3538{ 4202{
3539 loop_done = how; 4203 loop_done = how;
3540} 4204}
3541 4205
3542void 4206void
3543ev_ref (EV_P) EV_THROW 4207ev_ref (EV_P) EV_NOEXCEPT
3544{ 4208{
3545 ++activecnt; 4209 ++activecnt;
3546} 4210}
3547 4211
3548void 4212void
3549ev_unref (EV_P) EV_THROW 4213ev_unref (EV_P) EV_NOEXCEPT
3550{ 4214{
3551 --activecnt; 4215 --activecnt;
3552} 4216}
3553 4217
3554void 4218void
3555ev_now_update (EV_P) EV_THROW 4219ev_now_update (EV_P) EV_NOEXCEPT
3556{ 4220{
3557 time_update (EV_A_ 1e100); 4221 time_update (EV_A_ EV_TSTAMP_HUGE);
3558} 4222}
3559 4223
3560void 4224void
3561ev_suspend (EV_P) EV_THROW 4225ev_suspend (EV_P) EV_NOEXCEPT
3562{ 4226{
3563 ev_now_update (EV_A); 4227 ev_now_update (EV_A);
3564} 4228}
3565 4229
3566void 4230void
3567ev_resume (EV_P) EV_THROW 4231ev_resume (EV_P) EV_NOEXCEPT
3568{ 4232{
3569 ev_tstamp mn_prev = mn_now; 4233 ev_tstamp mn_prev = mn_now;
3570 4234
3571 ev_now_update (EV_A); 4235 ev_now_update (EV_A);
3572 timers_reschedule (EV_A_ mn_now - mn_prev); 4236 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
3589inline_size void 4253inline_size void
3590wlist_del (WL *head, WL elem) 4254wlist_del (WL *head, WL elem)
3591{ 4255{
3592 while (*head) 4256 while (*head)
3593 { 4257 {
3594 if (expect_true (*head == elem)) 4258 if (ecb_expect_true (*head == elem))
3595 { 4259 {
3596 *head = elem->next; 4260 *head = elem->next;
3597 break; 4261 break;
3598 } 4262 }
3599 4263
… …
3611 w->pending = 0; 4275 w->pending = 0;
3612 } 4276 }
3613} 4277}
3614 4278
3615int 4279int
3616ev_clear_pending (EV_P_ void *w) EV_THROW 4280ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
3617{ 4281{
3618 W w_ = (W)w; 4282 W w_ = (W)w;
3619 int pending = w_->pending; 4283 int pending = w_->pending;
3620 4284
3621 if (expect_true (pending)) 4285 if (ecb_expect_true (pending))
3622 { 4286 {
3623 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4287 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3624 p->w = (W)&pending_w; 4288 p->w = (W)&pending_w;
3625 w_->pending = 0; 4289 w_->pending = 0;
3626 return p->events; 4290 return p->events;
… …
3653 w->active = 0; 4317 w->active = 0;
3654} 4318}
3655 4319
3656/*****************************************************************************/ 4320/*****************************************************************************/
3657 4321
3658void noinline 4322ecb_noinline
4323void
3659ev_io_start (EV_P_ ev_io *w) EV_THROW 4324ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
3660{ 4325{
3661 int fd = w->fd; 4326 int fd = w->fd;
3662 4327
3663 if (expect_false (ev_is_active (w))) 4328 if (ecb_expect_false (ev_is_active (w)))
3664 return; 4329 return;
3665 4330
3666 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4331 assert (("libev: ev_io_start called with negative fd", fd >= 0));
3667 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 4332 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
3668 4333
4334#if EV_VERIFY >= 2
4335 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4336#endif
3669 EV_FREQUENT_CHECK; 4337 EV_FREQUENT_CHECK;
3670 4338
3671 ev_start (EV_A_ (W)w, 1); 4339 ev_start (EV_A_ (W)w, 1);
3672 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4340 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
3673 wlist_add (&anfds[fd].head, (WL)w); 4341 wlist_add (&anfds[fd].head, (WL)w);
3674 4342
3675 /* common bug, apparently */ 4343 /* common bug, apparently */
3676 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w)); 4344 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3677 4345
… …
3679 w->events &= ~EV__IOFDSET; 4347 w->events &= ~EV__IOFDSET;
3680 4348
3681 EV_FREQUENT_CHECK; 4349 EV_FREQUENT_CHECK;
3682} 4350}
3683 4351
3684void noinline 4352ecb_noinline
4353void
3685ev_io_stop (EV_P_ ev_io *w) EV_THROW 4354ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
3686{ 4355{
3687 clear_pending (EV_A_ (W)w); 4356 clear_pending (EV_A_ (W)w);
3688 if (expect_false (!ev_is_active (w))) 4357 if (ecb_expect_false (!ev_is_active (w)))
3689 return; 4358 return;
3690 4359
3691 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4360 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
3692 4361
4362#if EV_VERIFY >= 2
4363 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4364#endif
3693 EV_FREQUENT_CHECK; 4365 EV_FREQUENT_CHECK;
3694 4366
3695 wlist_del (&anfds[w->fd].head, (WL)w); 4367 wlist_del (&anfds[w->fd].head, (WL)w);
3696 ev_stop (EV_A_ (W)w); 4368 ev_stop (EV_A_ (W)w);
3697 4369
3698 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 4370 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3699 4371
3700 EV_FREQUENT_CHECK; 4372 EV_FREQUENT_CHECK;
3701} 4373}
3702 4374
3703void noinline 4375ecb_noinline
4376void
3704ev_timer_start (EV_P_ ev_timer *w) EV_THROW 4377ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
3705{ 4378{
3706 if (expect_false (ev_is_active (w))) 4379 if (ecb_expect_false (ev_is_active (w)))
3707 return; 4380 return;
3708 4381
3709 ev_at (w) += mn_now; 4382 ev_at (w) += mn_now;
3710 4383
3711 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4384 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
3712 4385
3713 EV_FREQUENT_CHECK; 4386 EV_FREQUENT_CHECK;
3714 4387
3715 ++timercnt; 4388 ++timercnt;
3716 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4389 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
3717 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4390 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
3718 ANHE_w (timers [ev_active (w)]) = (WT)w; 4391 ANHE_w (timers [ev_active (w)]) = (WT)w;
3719 ANHE_at_cache (timers [ev_active (w)]); 4392 ANHE_at_cache (timers [ev_active (w)]);
3720 upheap (timers, ev_active (w)); 4393 upheap (timers, ev_active (w));
3721 4394
3722 EV_FREQUENT_CHECK; 4395 EV_FREQUENT_CHECK;
3723 4396
3724 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4397 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
3725} 4398}
3726 4399
3727void noinline 4400ecb_noinline
4401void
3728ev_timer_stop (EV_P_ ev_timer *w) EV_THROW 4402ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
3729{ 4403{
3730 clear_pending (EV_A_ (W)w); 4404 clear_pending (EV_A_ (W)w);
3731 if (expect_false (!ev_is_active (w))) 4405 if (ecb_expect_false (!ev_is_active (w)))
3732 return; 4406 return;
3733 4407
3734 EV_FREQUENT_CHECK; 4408 EV_FREQUENT_CHECK;
3735 4409
3736 { 4410 {
… …
3738 4412
3739 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4413 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
3740 4414
3741 --timercnt; 4415 --timercnt;
3742 4416
3743 if (expect_true (active < timercnt + HEAP0)) 4417 if (ecb_expect_true (active < timercnt + HEAP0))
3744 { 4418 {
3745 timers [active] = timers [timercnt + HEAP0]; 4419 timers [active] = timers [timercnt + HEAP0];
3746 adjustheap (timers, timercnt, active); 4420 adjustheap (timers, timercnt, active);
3747 } 4421 }
3748 } 4422 }
… …
3752 ev_stop (EV_A_ (W)w); 4426 ev_stop (EV_A_ (W)w);
3753 4427
3754 EV_FREQUENT_CHECK; 4428 EV_FREQUENT_CHECK;
3755} 4429}
3756 4430
3757void noinline 4431ecb_noinline
4432void
3758ev_timer_again (EV_P_ ev_timer *w) EV_THROW 4433ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
3759{ 4434{
3760 EV_FREQUENT_CHECK; 4435 EV_FREQUENT_CHECK;
3761 4436
3762 clear_pending (EV_A_ (W)w); 4437 clear_pending (EV_A_ (W)w);
3763 4438
… …
3780 4455
3781 EV_FREQUENT_CHECK; 4456 EV_FREQUENT_CHECK;
3782} 4457}
3783 4458
3784ev_tstamp 4459ev_tstamp
3785ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW 4460ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
3786{ 4461{
3787 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4462 return ev_at (w) - (ev_is_active (w) ? mn_now : EV_TS_CONST (0.));
3788} 4463}
3789 4464
3790#if EV_PERIODIC_ENABLE 4465#if EV_PERIODIC_ENABLE
3791void noinline 4466ecb_noinline
4467void
3792ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW 4468ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
3793{ 4469{
3794 if (expect_false (ev_is_active (w))) 4470 if (ecb_expect_false (ev_is_active (w)))
3795 return; 4471 return;
4472
4473#if EV_USE_TIMERFD
4474 if (timerfd == -2)
4475 evtimerfd_init (EV_A);
4476#endif
3796 4477
3797 if (w->reschedule_cb) 4478 if (w->reschedule_cb)
3798 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4479 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
3799 else if (w->interval) 4480 else if (w->interval)
3800 { 4481 {
… …
3806 4487
3807 EV_FREQUENT_CHECK; 4488 EV_FREQUENT_CHECK;
3808 4489
3809 ++periodiccnt; 4490 ++periodiccnt;
3810 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4491 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
3811 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4492 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
3812 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4493 ANHE_w (periodics [ev_active (w)]) = (WT)w;
3813 ANHE_at_cache (periodics [ev_active (w)]); 4494 ANHE_at_cache (periodics [ev_active (w)]);
3814 upheap (periodics, ev_active (w)); 4495 upheap (periodics, ev_active (w));
3815 4496
3816 EV_FREQUENT_CHECK; 4497 EV_FREQUENT_CHECK;
3817 4498
3818 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4499 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
3819} 4500}
3820 4501
3821void noinline 4502ecb_noinline
4503void
3822ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW 4504ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
3823{ 4505{
3824 clear_pending (EV_A_ (W)w); 4506 clear_pending (EV_A_ (W)w);
3825 if (expect_false (!ev_is_active (w))) 4507 if (ecb_expect_false (!ev_is_active (w)))
3826 return; 4508 return;
3827 4509
3828 EV_FREQUENT_CHECK; 4510 EV_FREQUENT_CHECK;
3829 4511
3830 { 4512 {
… …
3832 4514
3833 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4515 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
3834 4516
3835 --periodiccnt; 4517 --periodiccnt;
3836 4518
3837 if (expect_true (active < periodiccnt + HEAP0)) 4519 if (ecb_expect_true (active < periodiccnt + HEAP0))
3838 { 4520 {
3839 periodics [active] = periodics [periodiccnt + HEAP0]; 4521 periodics [active] = periodics [periodiccnt + HEAP0];
3840 adjustheap (periodics, periodiccnt, active); 4522 adjustheap (periodics, periodiccnt, active);
3841 } 4523 }
3842 } 4524 }
… …
3844 ev_stop (EV_A_ (W)w); 4526 ev_stop (EV_A_ (W)w);
3845 4527
3846 EV_FREQUENT_CHECK; 4528 EV_FREQUENT_CHECK;
3847} 4529}
3848 4530
3849void noinline 4531ecb_noinline
4532void
3850ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW 4533ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
3851{ 4534{
3852 /* TODO: use adjustheap and recalculation */ 4535 /* TODO: use adjustheap and recalculation */
3853 ev_periodic_stop (EV_A_ w); 4536 ev_periodic_stop (EV_A_ w);
3854 ev_periodic_start (EV_A_ w); 4537 ev_periodic_start (EV_A_ w);
3855} 4538}
… …
3859# define SA_RESTART 0 4542# define SA_RESTART 0
3860#endif 4543#endif
3861 4544
3862#if EV_SIGNAL_ENABLE 4545#if EV_SIGNAL_ENABLE
3863 4546
3864void noinline 4547ecb_noinline
4548void
3865ev_signal_start (EV_P_ ev_signal *w) EV_THROW 4549ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
3866{ 4550{
3867 if (expect_false (ev_is_active (w))) 4551 if (ecb_expect_false (ev_is_active (w)))
3868 return; 4552 return;
3869 4553
3870 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4554 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
3871 4555
3872#if EV_MULTIPLICITY 4556#if EV_MULTIPLICITY
… …
3941 } 4625 }
3942 4626
3943 EV_FREQUENT_CHECK; 4627 EV_FREQUENT_CHECK;
3944} 4628}
3945 4629
3946void noinline 4630ecb_noinline
4631void
3947ev_signal_stop (EV_P_ ev_signal *w) EV_THROW 4632ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
3948{ 4633{
3949 clear_pending (EV_A_ (W)w); 4634 clear_pending (EV_A_ (W)w);
3950 if (expect_false (!ev_is_active (w))) 4635 if (ecb_expect_false (!ev_is_active (w)))
3951 return; 4636 return;
3952 4637
3953 EV_FREQUENT_CHECK; 4638 EV_FREQUENT_CHECK;
3954 4639
3955 wlist_del (&signals [w->signum - 1].head, (WL)w); 4640 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
3983#endif 4668#endif
3984 4669
3985#if EV_CHILD_ENABLE 4670#if EV_CHILD_ENABLE
3986 4671
3987void 4672void
3988ev_child_start (EV_P_ ev_child *w) EV_THROW 4673ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
3989{ 4674{
3990#if EV_MULTIPLICITY 4675#if EV_MULTIPLICITY
3991 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4676 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3992#endif 4677#endif
3993 if (expect_false (ev_is_active (w))) 4678 if (ecb_expect_false (ev_is_active (w)))
3994 return; 4679 return;
3995 4680
3996 EV_FREQUENT_CHECK; 4681 EV_FREQUENT_CHECK;
3997 4682
3998 ev_start (EV_A_ (W)w, 1); 4683 ev_start (EV_A_ (W)w, 1);
… …
4000 4685
4001 EV_FREQUENT_CHECK; 4686 EV_FREQUENT_CHECK;
4002} 4687}
4003 4688
4004void 4689void
4005ev_child_stop (EV_P_ ev_child *w) EV_THROW 4690ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
4006{ 4691{
4007 clear_pending (EV_A_ (W)w); 4692 clear_pending (EV_A_ (W)w);
4008 if (expect_false (!ev_is_active (w))) 4693 if (ecb_expect_false (!ev_is_active (w)))
4009 return; 4694 return;
4010 4695
4011 EV_FREQUENT_CHECK; 4696 EV_FREQUENT_CHECK;
4012 4697
4013 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); 4698 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
… …
4027 4712
4028#define DEF_STAT_INTERVAL 5.0074891 4713#define DEF_STAT_INTERVAL 5.0074891
4029#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4714#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
4030#define MIN_STAT_INTERVAL 0.1074891 4715#define MIN_STAT_INTERVAL 0.1074891
4031 4716
4032static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4717ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
4033 4718
4034#if EV_USE_INOTIFY 4719#if EV_USE_INOTIFY
4035 4720
4036/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4721/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
4037# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4722# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
4038 4723
4039static void noinline 4724ecb_noinline
4725static void
4040infy_add (EV_P_ ev_stat *w) 4726infy_add (EV_P_ ev_stat *w)
4041{ 4727{
4042 w->wd = inotify_add_watch (fs_fd, w->path, 4728 w->wd = inotify_add_watch (fs_fd, w->path,
4043 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY 4729 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4044 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO 4730 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
… …
4108 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4794 if (ev_is_active (&w->timer)) ev_ref (EV_A);
4109 ev_timer_again (EV_A_ &w->timer); 4795 ev_timer_again (EV_A_ &w->timer);
4110 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4796 if (ev_is_active (&w->timer)) ev_unref (EV_A);
4111} 4797}
4112 4798
4113static void noinline 4799ecb_noinline
4800static void
4114infy_del (EV_P_ ev_stat *w) 4801infy_del (EV_P_ ev_stat *w)
4115{ 4802{
4116 int slot; 4803 int slot;
4117 int wd = w->wd; 4804 int wd = w->wd;
4118 4805
… …
4125 4812
4126 /* remove this watcher, if others are watching it, they will rearm */ 4813 /* remove this watcher, if others are watching it, they will rearm */
4127 inotify_rm_watch (fs_fd, wd); 4814 inotify_rm_watch (fs_fd, wd);
4128} 4815}
4129 4816
4130static void noinline 4817ecb_noinline
4818static void
4131infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4819infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
4132{ 4820{
4133 if (slot < 0) 4821 if (slot < 0)
4134 /* overflow, need to check for all hash slots */ 4822 /* overflow, need to check for all hash slots */
4135 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4823 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
4171 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4859 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4172 ofs += sizeof (struct inotify_event) + ev->len; 4860 ofs += sizeof (struct inotify_event) + ev->len;
4173 } 4861 }
4174} 4862}
4175 4863
4176inline_size void ecb_cold 4864inline_size ecb_cold
4865void
4177ev_check_2625 (EV_P) 4866ev_check_2625 (EV_P)
4178{ 4867{
4179 /* kernels < 2.6.25 are borked 4868 /* kernels < 2.6.25 are borked
4180 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4869 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
4181 */ 4870 */
… …
4271#else 4960#else
4272# define EV_LSTAT(p,b) lstat (p, b) 4961# define EV_LSTAT(p,b) lstat (p, b)
4273#endif 4962#endif
4274 4963
4275void 4964void
4276ev_stat_stat (EV_P_ ev_stat *w) EV_THROW 4965ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
4277{ 4966{
4278 if (lstat (w->path, &w->attr) < 0) 4967 if (lstat (w->path, &w->attr) < 0)
4279 w->attr.st_nlink = 0; 4968 w->attr.st_nlink = 0;
4280 else if (!w->attr.st_nlink) 4969 else if (!w->attr.st_nlink)
4281 w->attr.st_nlink = 1; 4970 w->attr.st_nlink = 1;
4282} 4971}
4283 4972
4284static void noinline 4973ecb_noinline
4974static void
4285stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4975stat_timer_cb (EV_P_ ev_timer *w_, int revents)
4286{ 4976{
4287 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4977 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
4288 4978
4289 ev_statdata prev = w->attr; 4979 ev_statdata prev = w->attr;
… …
4320 ev_feed_event (EV_A_ w, EV_STAT); 5010 ev_feed_event (EV_A_ w, EV_STAT);
4321 } 5011 }
4322} 5012}
4323 5013
4324void 5014void
4325ev_stat_start (EV_P_ ev_stat *w) EV_THROW 5015ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
4326{ 5016{
4327 if (expect_false (ev_is_active (w))) 5017 if (ecb_expect_false (ev_is_active (w)))
4328 return; 5018 return;
4329 5019
4330 ev_stat_stat (EV_A_ w); 5020 ev_stat_stat (EV_A_ w);
4331 5021
4332 if (w->interval < MIN_STAT_INTERVAL && w->interval) 5022 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
4351 5041
4352 EV_FREQUENT_CHECK; 5042 EV_FREQUENT_CHECK;
4353} 5043}
4354 5044
4355void 5045void
4356ev_stat_stop (EV_P_ ev_stat *w) EV_THROW 5046ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
4357{ 5047{
4358 clear_pending (EV_A_ (W)w); 5048 clear_pending (EV_A_ (W)w);
4359 if (expect_false (!ev_is_active (w))) 5049 if (ecb_expect_false (!ev_is_active (w)))
4360 return; 5050 return;
4361 5051
4362 EV_FREQUENT_CHECK; 5052 EV_FREQUENT_CHECK;
4363 5053
4364#if EV_USE_INOTIFY 5054#if EV_USE_INOTIFY
… …
4377} 5067}
4378#endif 5068#endif
4379 5069
4380#if EV_IDLE_ENABLE 5070#if EV_IDLE_ENABLE
4381void 5071void
4382ev_idle_start (EV_P_ ev_idle *w) EV_THROW 5072ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
4383{ 5073{
4384 if (expect_false (ev_is_active (w))) 5074 if (ecb_expect_false (ev_is_active (w)))
4385 return; 5075 return;
4386 5076
4387 pri_adjust (EV_A_ (W)w); 5077 pri_adjust (EV_A_ (W)w);
4388 5078
4389 EV_FREQUENT_CHECK; 5079 EV_FREQUENT_CHECK;
… …
4392 int active = ++idlecnt [ABSPRI (w)]; 5082 int active = ++idlecnt [ABSPRI (w)];
4393 5083
4394 ++idleall; 5084 ++idleall;
4395 ev_start (EV_A_ (W)w, active); 5085 ev_start (EV_A_ (W)w, active);
4396 5086
4397 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 5087 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
4398 idles [ABSPRI (w)][active - 1] = w; 5088 idles [ABSPRI (w)][active - 1] = w;
4399 } 5089 }
4400 5090
4401 EV_FREQUENT_CHECK; 5091 EV_FREQUENT_CHECK;
4402} 5092}
4403 5093
4404void 5094void
4405ev_idle_stop (EV_P_ ev_idle *w) EV_THROW 5095ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
4406{ 5096{
4407 clear_pending (EV_A_ (W)w); 5097 clear_pending (EV_A_ (W)w);
4408 if (expect_false (!ev_is_active (w))) 5098 if (ecb_expect_false (!ev_is_active (w)))
4409 return; 5099 return;
4410 5100
4411 EV_FREQUENT_CHECK; 5101 EV_FREQUENT_CHECK;
4412 5102
4413 { 5103 {
… …
4424} 5114}
4425#endif 5115#endif
4426 5116
4427#if EV_PREPARE_ENABLE 5117#if EV_PREPARE_ENABLE
4428void 5118void
4429ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW 5119ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
4430{ 5120{
4431 if (expect_false (ev_is_active (w))) 5121 if (ecb_expect_false (ev_is_active (w)))
4432 return; 5122 return;
4433 5123
4434 EV_FREQUENT_CHECK; 5124 EV_FREQUENT_CHECK;
4435 5125
4436 ev_start (EV_A_ (W)w, ++preparecnt); 5126 ev_start (EV_A_ (W)w, ++preparecnt);
4437 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 5127 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
4438 prepares [preparecnt - 1] = w; 5128 prepares [preparecnt - 1] = w;
4439 5129
4440 EV_FREQUENT_CHECK; 5130 EV_FREQUENT_CHECK;
4441} 5131}
4442 5132
4443void 5133void
4444ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW 5134ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
4445{ 5135{
4446 clear_pending (EV_A_ (W)w); 5136 clear_pending (EV_A_ (W)w);
4447 if (expect_false (!ev_is_active (w))) 5137 if (ecb_expect_false (!ev_is_active (w)))
4448 return; 5138 return;
4449 5139
4450 EV_FREQUENT_CHECK; 5140 EV_FREQUENT_CHECK;
4451 5141
4452 { 5142 {
… …
4462} 5152}
4463#endif 5153#endif
4464 5154
4465#if EV_CHECK_ENABLE 5155#if EV_CHECK_ENABLE
4466void 5156void
4467ev_check_start (EV_P_ ev_check *w) EV_THROW 5157ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
4468{ 5158{
4469 if (expect_false (ev_is_active (w))) 5159 if (ecb_expect_false (ev_is_active (w)))
4470 return; 5160 return;
4471 5161
4472 EV_FREQUENT_CHECK; 5162 EV_FREQUENT_CHECK;
4473 5163
4474 ev_start (EV_A_ (W)w, ++checkcnt); 5164 ev_start (EV_A_ (W)w, ++checkcnt);
4475 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 5165 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
4476 checks [checkcnt - 1] = w; 5166 checks [checkcnt - 1] = w;
4477 5167
4478 EV_FREQUENT_CHECK; 5168 EV_FREQUENT_CHECK;
4479} 5169}
4480 5170
4481void 5171void
4482ev_check_stop (EV_P_ ev_check *w) EV_THROW 5172ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
4483{ 5173{
4484 clear_pending (EV_A_ (W)w); 5174 clear_pending (EV_A_ (W)w);
4485 if (expect_false (!ev_is_active (w))) 5175 if (ecb_expect_false (!ev_is_active (w)))
4486 return; 5176 return;
4487 5177
4488 EV_FREQUENT_CHECK; 5178 EV_FREQUENT_CHECK;
4489 5179
4490 { 5180 {
… …
4499 EV_FREQUENT_CHECK; 5189 EV_FREQUENT_CHECK;
4500} 5190}
4501#endif 5191#endif
4502 5192
4503#if EV_EMBED_ENABLE 5193#if EV_EMBED_ENABLE
4504void noinline 5194ecb_noinline
5195void
4505ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW 5196ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
4506{ 5197{
4507 ev_run (w->other, EVRUN_NOWAIT); 5198 ev_run (w->other, EVRUN_NOWAIT);
4508} 5199}
4509 5200
4510static void 5201static void
… …
4532 ev_run (EV_A_ EVRUN_NOWAIT); 5223 ev_run (EV_A_ EVRUN_NOWAIT);
4533 } 5224 }
4534 } 5225 }
4535} 5226}
4536 5227
5228#if EV_FORK_ENABLE
4537static void 5229static void
4538embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 5230embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
4539{ 5231{
4540 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 5232 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
4541 5233
… …
4548 ev_run (EV_A_ EVRUN_NOWAIT); 5240 ev_run (EV_A_ EVRUN_NOWAIT);
4549 } 5241 }
4550 5242
4551 ev_embed_start (EV_A_ w); 5243 ev_embed_start (EV_A_ w);
4552} 5244}
5245#endif
4553 5246
4554#if 0 5247#if 0
4555static void 5248static void
4556embed_idle_cb (EV_P_ ev_idle *idle, int revents) 5249embed_idle_cb (EV_P_ ev_idle *idle, int revents)
4557{ 5250{
4558 ev_idle_stop (EV_A_ idle); 5251 ev_idle_stop (EV_A_ idle);
4559} 5252}
4560#endif 5253#endif
4561 5254
4562void 5255void
4563ev_embed_start (EV_P_ ev_embed *w) EV_THROW 5256ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
4564{ 5257{
4565 if (expect_false (ev_is_active (w))) 5258 if (ecb_expect_false (ev_is_active (w)))
4566 return; 5259 return;
4567 5260
4568 { 5261 {
4569 EV_P = w->other; 5262 EV_P = w->other;
4570 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 5263 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
… …
4578 5271
4579 ev_prepare_init (&w->prepare, embed_prepare_cb); 5272 ev_prepare_init (&w->prepare, embed_prepare_cb);
4580 ev_set_priority (&w->prepare, EV_MINPRI); 5273 ev_set_priority (&w->prepare, EV_MINPRI);
4581 ev_prepare_start (EV_A_ &w->prepare); 5274 ev_prepare_start (EV_A_ &w->prepare);
4582 5275
5276#if EV_FORK_ENABLE
4583 ev_fork_init (&w->fork, embed_fork_cb); 5277 ev_fork_init (&w->fork, embed_fork_cb);
4584 ev_fork_start (EV_A_ &w->fork); 5278 ev_fork_start (EV_A_ &w->fork);
5279#endif
4585 5280
4586 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 5281 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
4587 5282
4588 ev_start (EV_A_ (W)w, 1); 5283 ev_start (EV_A_ (W)w, 1);
4589 5284
4590 EV_FREQUENT_CHECK; 5285 EV_FREQUENT_CHECK;
4591} 5286}
4592 5287
4593void 5288void
4594ev_embed_stop (EV_P_ ev_embed *w) EV_THROW 5289ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
4595{ 5290{
4596 clear_pending (EV_A_ (W)w); 5291 clear_pending (EV_A_ (W)w);
4597 if (expect_false (!ev_is_active (w))) 5292 if (ecb_expect_false (!ev_is_active (w)))
4598 return; 5293 return;
4599 5294
4600 EV_FREQUENT_CHECK; 5295 EV_FREQUENT_CHECK;
4601 5296
4602 ev_io_stop (EV_A_ &w->io); 5297 ev_io_stop (EV_A_ &w->io);
4603 ev_prepare_stop (EV_A_ &w->prepare); 5298 ev_prepare_stop (EV_A_ &w->prepare);
5299#if EV_FORK_ENABLE
4604 ev_fork_stop (EV_A_ &w->fork); 5300 ev_fork_stop (EV_A_ &w->fork);
5301#endif
4605 5302
4606 ev_stop (EV_A_ (W)w); 5303 ev_stop (EV_A_ (W)w);
4607 5304
4608 EV_FREQUENT_CHECK; 5305 EV_FREQUENT_CHECK;
4609} 5306}
4610#endif 5307#endif
4611 5308
4612#if EV_FORK_ENABLE 5309#if EV_FORK_ENABLE
4613void 5310void
4614ev_fork_start (EV_P_ ev_fork *w) EV_THROW 5311ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
4615{ 5312{
4616 if (expect_false (ev_is_active (w))) 5313 if (ecb_expect_false (ev_is_active (w)))
4617 return; 5314 return;
4618 5315
4619 EV_FREQUENT_CHECK; 5316 EV_FREQUENT_CHECK;
4620 5317
4621 ev_start (EV_A_ (W)w, ++forkcnt); 5318 ev_start (EV_A_ (W)w, ++forkcnt);
4622 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5319 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
4623 forks [forkcnt - 1] = w; 5320 forks [forkcnt - 1] = w;
4624 5321
4625 EV_FREQUENT_CHECK; 5322 EV_FREQUENT_CHECK;
4626} 5323}
4627 5324
4628void 5325void
4629ev_fork_stop (EV_P_ ev_fork *w) EV_THROW 5326ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
4630{ 5327{
4631 clear_pending (EV_A_ (W)w); 5328 clear_pending (EV_A_ (W)w);
4632 if (expect_false (!ev_is_active (w))) 5329 if (ecb_expect_false (!ev_is_active (w)))
4633 return; 5330 return;
4634 5331
4635 EV_FREQUENT_CHECK; 5332 EV_FREQUENT_CHECK;
4636 5333
4637 { 5334 {
… …
4647} 5344}
4648#endif 5345#endif
4649 5346
4650#if EV_CLEANUP_ENABLE 5347#if EV_CLEANUP_ENABLE
4651void 5348void
4652ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW 5349ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4653{ 5350{
4654 if (expect_false (ev_is_active (w))) 5351 if (ecb_expect_false (ev_is_active (w)))
4655 return; 5352 return;
4656 5353
4657 EV_FREQUENT_CHECK; 5354 EV_FREQUENT_CHECK;
4658 5355
4659 ev_start (EV_A_ (W)w, ++cleanupcnt); 5356 ev_start (EV_A_ (W)w, ++cleanupcnt);
4660 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 5357 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
4661 cleanups [cleanupcnt - 1] = w; 5358 cleanups [cleanupcnt - 1] = w;
4662 5359
4663 /* cleanup watchers should never keep a refcount on the loop */ 5360 /* cleanup watchers should never keep a refcount on the loop */
4664 ev_unref (EV_A); 5361 ev_unref (EV_A);
4665 EV_FREQUENT_CHECK; 5362 EV_FREQUENT_CHECK;
4666} 5363}
4667 5364
4668void 5365void
4669ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW 5366ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4670{ 5367{
4671 clear_pending (EV_A_ (W)w); 5368 clear_pending (EV_A_ (W)w);
4672 if (expect_false (!ev_is_active (w))) 5369 if (ecb_expect_false (!ev_is_active (w)))
4673 return; 5370 return;
4674 5371
4675 EV_FREQUENT_CHECK; 5372 EV_FREQUENT_CHECK;
4676 ev_ref (EV_A); 5373 ev_ref (EV_A);
4677 5374
… …
4688} 5385}
4689#endif 5386#endif
4690 5387
4691#if EV_ASYNC_ENABLE 5388#if EV_ASYNC_ENABLE
4692void 5389void
4693ev_async_start (EV_P_ ev_async *w) EV_THROW 5390ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4694{ 5391{
4695 if (expect_false (ev_is_active (w))) 5392 if (ecb_expect_false (ev_is_active (w)))
4696 return; 5393 return;
4697 5394
4698 w->sent = 0; 5395 w->sent = 0;
4699 5396
4700 evpipe_init (EV_A); 5397 evpipe_init (EV_A);
4701 5398
4702 EV_FREQUENT_CHECK; 5399 EV_FREQUENT_CHECK;
4703 5400
4704 ev_start (EV_A_ (W)w, ++asynccnt); 5401 ev_start (EV_A_ (W)w, ++asynccnt);
4705 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5402 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
4706 asyncs [asynccnt - 1] = w; 5403 asyncs [asynccnt - 1] = w;
4707 5404
4708 EV_FREQUENT_CHECK; 5405 EV_FREQUENT_CHECK;
4709} 5406}
4710 5407
4711void 5408void
4712ev_async_stop (EV_P_ ev_async *w) EV_THROW 5409ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4713{ 5410{
4714 clear_pending (EV_A_ (W)w); 5411 clear_pending (EV_A_ (W)w);
4715 if (expect_false (!ev_is_active (w))) 5412 if (ecb_expect_false (!ev_is_active (w)))
4716 return; 5413 return;
4717 5414
4718 EV_FREQUENT_CHECK; 5415 EV_FREQUENT_CHECK;
4719 5416
4720 { 5417 {
… …
4728 5425
4729 EV_FREQUENT_CHECK; 5426 EV_FREQUENT_CHECK;
4730} 5427}
4731 5428
4732void 5429void
4733ev_async_send (EV_P_ ev_async *w) EV_THROW 5430ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
4734{ 5431{
4735 w->sent = 1; 5432 w->sent = 1;
4736 evpipe_write (EV_A_ &async_pending); 5433 evpipe_write (EV_A_ &async_pending);
4737} 5434}
4738#endif 5435#endif
… …
4775 5472
4776 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5473 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
4777} 5474}
4778 5475
4779void 5476void
4780ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW 5477ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
4781{ 5478{
4782 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5479 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
4783
4784 if (expect_false (!once))
4785 {
4786 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
4787 return;
4788 }
4789 5480
4790 once->cb = cb; 5481 once->cb = cb;
4791 once->arg = arg; 5482 once->arg = arg;
4792 5483
4793 ev_init (&once->io, once_cb_io); 5484 ev_init (&once->io, once_cb_io);
… …
4806} 5497}
4807 5498
4808/*****************************************************************************/ 5499/*****************************************************************************/
4809 5500
4810#if EV_WALK_ENABLE 5501#if EV_WALK_ENABLE
4811void ecb_cold 5502ecb_cold
5503void
4812ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW 5504ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
4813{ 5505{
4814 int i, j; 5506 int i, j;
4815 ev_watcher_list *wl, *wn; 5507 ev_watcher_list *wl, *wn;
4816 5508
4817 if (types & (EV_IO | EV_EMBED)) 5509 if (types & (EV_IO | EV_EMBED))

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