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Comparing libev/ev.c (file contents):
Revision 1.472 by root, Tue Sep 9 13:24:13 2014 UTC vs.
Revision 1.517 by root, Tue Dec 24 13:52:58 2019 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010,2011,2012,2013 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007-2019 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
… …
115# else 115# else
116# undef EV_USE_EPOLL 116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0 117# define EV_USE_EPOLL 0
118# endif 118# endif
119 119
120# if HAVE_LINUX_AIO_ABI_H
121# ifndef EV_USE_LINUXAIO
122# define EV_USE_LINUXAIO EV_FEATURE_BACKENDS
123# endif
124# else
125# undef EV_USE_LINUXAIO
126# define EV_USE_LINUXAIO 0
127# endif
128
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 1
350# else
351# define EV_USE_LINUXAIO 0
352# endif
353#endif
354
355#ifndef EV_USE_IOURING
356# if __linux /* later checks might disable again */
357# define EV_USE_IOURING 1
358# else
359# define EV_USE_IOURING 0
360# endif
361#endif
362
318#ifndef EV_USE_INOTIFY 363#ifndef EV_USE_INOTIFY
319# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 364# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
320# define EV_USE_INOTIFY EV_FEATURE_OS 365# define EV_USE_INOTIFY EV_FEATURE_OS
321# else 366# else
322# define EV_USE_INOTIFY 0 367# define EV_USE_INOTIFY 0
… …
345# else 390# else
346# define EV_USE_SIGNALFD 0 391# define EV_USE_SIGNALFD 0
347# endif 392# endif
348#endif 393#endif
349 394
395#ifndef EV_USE_TIMERFD
396# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 8))
397# define EV_USE_TIMERFD EV_FEATURE_OS
398# else
399# define EV_USE_TIMERFD 0
400# endif
401#endif
402
350#if 0 /* debugging */ 403#if 0 /* debugging */
351# define EV_VERIFY 3 404# define EV_VERIFY 3
352# define EV_USE_4HEAP 1 405# define EV_USE_4HEAP 1
353# define EV_HEAP_CACHE_AT 1 406# define EV_HEAP_CACHE_AT 1
354#endif 407#endif
… …
363 416
364#ifndef EV_HEAP_CACHE_AT 417#ifndef EV_HEAP_CACHE_AT
365# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 418# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
366#endif 419#endif
367 420
368#ifdef ANDROID 421#ifdef __ANDROID__
369/* supposedly, android doesn't typedef fd_mask */ 422/* supposedly, android doesn't typedef fd_mask */
370# undef EV_USE_SELECT 423# undef EV_USE_SELECT
371# define EV_USE_SELECT 0 424# define EV_USE_SELECT 0
372/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */ 425/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
373# undef EV_USE_CLOCK_SYSCALL 426# undef EV_USE_CLOCK_SYSCALL
… …
387# include <sys/syscall.h> 440# include <sys/syscall.h>
388# ifdef SYS_clock_gettime 441# ifdef SYS_clock_gettime
389# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 442# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
390# undef EV_USE_MONOTONIC 443# undef EV_USE_MONOTONIC
391# define EV_USE_MONOTONIC 1 444# define EV_USE_MONOTONIC 1
445# define EV_NEED_SYSCALL 1
392# else 446# else
393# undef EV_USE_CLOCK_SYSCALL 447# undef EV_USE_CLOCK_SYSCALL
394# define EV_USE_CLOCK_SYSCALL 0 448# define EV_USE_CLOCK_SYSCALL 0
395# endif 449# endif
396#endif 450#endif
… …
410#if !EV_STAT_ENABLE 464#if !EV_STAT_ENABLE
411# undef EV_USE_INOTIFY 465# undef EV_USE_INOTIFY
412# define EV_USE_INOTIFY 0 466# define EV_USE_INOTIFY 0
413#endif 467#endif
414 468
469#if __linux && EV_USE_IOURING
470# include <linux/version.h>
471# if LINUX_VERSION_CODE < KERNEL_VERSION(4,14,0)
472# undef EV_USE_IOURING
473# define EV_USE_IOURING 0
474# endif
475#endif
476
415#if !EV_USE_NANOSLEEP 477#if !EV_USE_NANOSLEEP
416/* hp-ux has it in sys/time.h, which we unconditionally include above */ 478/* hp-ux has it in sys/time.h, which we unconditionally include above */
417# if !defined _WIN32 && !defined __hpux 479# if !defined _WIN32 && !defined __hpux
418# include <sys/select.h> 480# include <sys/select.h>
481# endif
482#endif
483
484#if EV_USE_LINUXAIO
485# include <sys/syscall.h>
486# if SYS_io_getevents && EV_USE_EPOLL /* linuxaio backend requires epoll backend */
487# define EV_NEED_SYSCALL 1
488# else
489# undef EV_USE_LINUXAIO
490# define EV_USE_LINUXAIO 0
491# endif
492#endif
493
494#if EV_USE_IOURING
495# include <sys/syscall.h>
496# if !SYS_io_uring_setup && __linux && !__alpha
497# define SYS_io_uring_setup 425
498# define SYS_io_uring_enter 426
499# define SYS_io_uring_wregister 427
500# endif
501# if SYS_io_uring_setup && EV_USE_EPOLL /* iouring backend requires epoll backend */
502# define EV_NEED_SYSCALL 1
503# else
504# undef EV_USE_IOURING
505# define EV_USE_IOURING 0
419# endif 506# endif
420#endif 507#endif
421 508
422#if EV_USE_INOTIFY 509#if EV_USE_INOTIFY
423# include <sys/statfs.h> 510# include <sys/statfs.h>
… …
428# define EV_USE_INOTIFY 0 515# define EV_USE_INOTIFY 0
429# endif 516# endif
430#endif 517#endif
431 518
432#if EV_USE_EVENTFD 519#if EV_USE_EVENTFD
433/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 520/* our minimum requirement is glibc 2.7 which has the stub, but not the full header */
434# include <stdint.h> 521# include <stdint.h>
435# ifndef EFD_NONBLOCK 522# ifndef EFD_NONBLOCK
436# define EFD_NONBLOCK O_NONBLOCK 523# define EFD_NONBLOCK O_NONBLOCK
437# endif 524# endif
438# ifndef EFD_CLOEXEC 525# ifndef EFD_CLOEXEC
… …
444# endif 531# endif
445EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags); 532EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
446#endif 533#endif
447 534
448#if EV_USE_SIGNALFD 535#if EV_USE_SIGNALFD
449/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 536/* our minimum requirement is glibc 2.7 which has the stub, but not the full header */
450# include <stdint.h> 537# include <stdint.h>
451# ifndef SFD_NONBLOCK 538# ifndef SFD_NONBLOCK
452# define SFD_NONBLOCK O_NONBLOCK 539# define SFD_NONBLOCK O_NONBLOCK
453# endif 540# endif
454# ifndef SFD_CLOEXEC 541# ifndef SFD_CLOEXEC
… …
456# define SFD_CLOEXEC O_CLOEXEC 543# define SFD_CLOEXEC O_CLOEXEC
457# else 544# else
458# define SFD_CLOEXEC 02000000 545# define SFD_CLOEXEC 02000000
459# endif 546# endif
460# endif 547# endif
461EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags); 548EV_CPP (extern "C") int (signalfd) (int fd, const sigset_t *mask, int flags);
462 549
463struct signalfd_siginfo 550struct signalfd_siginfo
464{ 551{
465 uint32_t ssi_signo; 552 uint32_t ssi_signo;
466 char pad[128 - sizeof (uint32_t)]; 553 char pad[128 - sizeof (uint32_t)];
467}; 554};
468#endif 555#endif
469 556
470/**/ 557/* for timerfd, libev core requires TFD_TIMER_CANCEL_ON_SET &c */
558#if EV_USE_TIMERFD
559# include <sys/timerfd.h>
560/* timerfd is only used for periodics */
561# if !(defined (TFD_TIMER_CANCEL_ON_SET) && defined (TFD_CLOEXEC) && defined (TFD_NONBLOCK)) || !EV_PERIODIC_ENABLE
562# undef EV_USE_TIMERFD
563# define EV_USE_TIMERFD 0
564# endif
565#endif
566
567/*****************************************************************************/
471 568
472#if EV_VERIFY >= 3 569#if EV_VERIFY >= 3
473# define EV_FREQUENT_CHECK ev_verify (EV_A) 570# define EV_FREQUENT_CHECK ev_verify (EV_A)
474#else 571#else
475# define EV_FREQUENT_CHECK do { } while (0) 572# define EV_FREQUENT_CHECK do { } while (0)
… …
480 * This value is good at least till the year 4000. 577 * This value is good at least till the year 4000.
481 */ 578 */
482#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */ 579#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
483/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */ 580/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
484 581
485#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 582#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
486#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 583#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
487 584
585/* find a portable timestamp that is "always" in the future but fits into time_t.
586 * this is quite hard, and we are mostly guessing - we handle 32 bit signed/unsigned time_t,
587 * and sizes larger than 32 bit, and maybe the unlikely floating point time_t */
588#define EV_TSTAMP_HUGE \
589 (sizeof (time_t) >= 8 ? 10000000000000. \
590 : 0 < (time_t)4294967295 ? 4294967295. \
591 : 2147483647.) \
592
593#ifndef EV_TS_CONST
594# define EV_TS_CONST(nv) nv
595# define EV_TS_TO_MSEC(a) a * 1e3 + 0.9999
596# define EV_TS_FROM_USEC(us) us * 1e-6
488#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) 597# define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
489#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0) 598# define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
599# define EV_TV_GET(tv) ((tv).tv_sec + (tv).tv_usec * 1e-6)
600# define EV_TS_GET(ts) ((ts).tv_sec + (ts).tv_nsec * 1e-9)
601#endif
490 602
491/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ 603/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
492/* ECB.H BEGIN */ 604/* ECB.H BEGIN */
493/* 605/*
494 * libecb - http://software.schmorp.de/pkg/libecb 606 * libecb - http://software.schmorp.de/pkg/libecb
495 * 607 *
496 * Copyright (©) 2009-2014 Marc Alexander Lehmann <libecb@schmorp.de> 608 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
497 * Copyright (©) 2011 Emanuele Giaquinta 609 * Copyright (©) 2011 Emanuele Giaquinta
498 * All rights reserved. 610 * All rights reserved.
499 * 611 *
500 * Redistribution and use in source and binary forms, with or without modifica- 612 * Redistribution and use in source and binary forms, with or without modifica-
501 * tion, are permitted provided that the following conditions are met: 613 * tion, are permitted provided that the following conditions are met:
… …
532 644
533#ifndef ECB_H 645#ifndef ECB_H
534#define ECB_H 646#define ECB_H
535 647
536/* 16 bits major, 16 bits minor */ 648/* 16 bits major, 16 bits minor */
537#define ECB_VERSION 0x00010003 649#define ECB_VERSION 0x00010006
538 650
539#ifdef _WIN32 651#ifdef _WIN32
540 typedef signed char int8_t; 652 typedef signed char int8_t;
541 typedef unsigned char uint8_t; 653 typedef unsigned char uint8_t;
542 typedef signed short int16_t; 654 typedef signed short int16_t;
… …
559 typedef uint32_t uintptr_t; 671 typedef uint32_t uintptr_t;
560 typedef int32_t intptr_t; 672 typedef int32_t intptr_t;
561 #endif 673 #endif
562#else 674#else
563 #include <inttypes.h> 675 #include <inttypes.h>
564 #if UINTMAX_MAX > 0xffffffffU 676 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
565 #define ECB_PTRSIZE 8 677 #define ECB_PTRSIZE 8
566 #else 678 #else
567 #define ECB_PTRSIZE 4 679 #define ECB_PTRSIZE 4
568 #endif 680 #endif
569#endif 681#endif
570 682
683#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
684#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
685
571/* work around x32 idiocy by defining proper macros */ 686/* work around x32 idiocy by defining proper macros */
572#if __amd64 || __x86_64 || _M_AMD64 || _M_X64 687#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
573 #if _ILP32 688 #if _ILP32
574 #define ECB_AMD64_X32 1 689 #define ECB_AMD64_X32 1
575 #else 690 #else
576 #define ECB_AMD64 1 691 #define ECB_AMD64 1
577 #endif 692 #endif
… …
582 * causing enormous grief in return for some better fake benchmark numbers. 697 * causing enormous grief in return for some better fake benchmark numbers.
583 * or so. 698 * or so.
584 * we try to detect these and simply assume they are not gcc - if they have 699 * we try to detect these and simply assume they are not gcc - if they have
585 * an issue with that they should have done it right in the first place. 700 * an issue with that they should have done it right in the first place.
586 */ 701 */
587#ifndef ECB_GCC_VERSION
588 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__ 702#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
589 #define ECB_GCC_VERSION(major,minor) 0 703 #define ECB_GCC_VERSION(major,minor) 0
590 #else 704#else
591 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) 705 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
592 #endif 706#endif
707
708#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
709
710#if __clang__ && defined __has_builtin
711 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
712#else
713 #define ECB_CLANG_BUILTIN(x) 0
714#endif
715
716#if __clang__ && defined __has_extension
717 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
718#else
719 #define ECB_CLANG_EXTENSION(x) 0
593#endif 720#endif
594 721
595#define ECB_CPP (__cplusplus+0) 722#define ECB_CPP (__cplusplus+0)
596#define ECB_CPP11 (__cplusplus >= 201103L) 723#define ECB_CPP11 (__cplusplus >= 201103L)
724#define ECB_CPP14 (__cplusplus >= 201402L)
725#define ECB_CPP17 (__cplusplus >= 201703L)
597 726
598#if ECB_CPP 727#if ECB_CPP
599 #define ECB_C 0 728 #define ECB_C 0
600 #define ECB_STDC_VERSION 0 729 #define ECB_STDC_VERSION 0
601#else 730#else
… …
603 #define ECB_STDC_VERSION __STDC_VERSION__ 732 #define ECB_STDC_VERSION __STDC_VERSION__
604#endif 733#endif
605 734
606#define ECB_C99 (ECB_STDC_VERSION >= 199901L) 735#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
607#define ECB_C11 (ECB_STDC_VERSION >= 201112L) 736#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
737#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
608 738
609#if ECB_CPP 739#if ECB_CPP
610 #define ECB_EXTERN_C extern "C" 740 #define ECB_EXTERN_C extern "C"
611 #define ECB_EXTERN_C_BEG ECB_EXTERN_C { 741 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
612 #define ECB_EXTERN_C_END } 742 #define ECB_EXTERN_C_END }
… …
627 757
628#if ECB_NO_SMP 758#if ECB_NO_SMP
629 #define ECB_MEMORY_FENCE do { } while (0) 759 #define ECB_MEMORY_FENCE do { } while (0)
630#endif 760#endif
631 761
762/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
763#if __xlC__ && ECB_CPP
764 #include <builtins.h>
765#endif
766
767#if 1400 <= _MSC_VER
768 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
769#endif
770
632#ifndef ECB_MEMORY_FENCE 771#ifndef ECB_MEMORY_FENCE
633 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 772 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
773 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
634 #if __i386 || __i386__ 774 #if __i386 || __i386__
635 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") 775 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
636 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") 776 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
637 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 777 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
638 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__ 778 #elif ECB_GCC_AMD64
639 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 779 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
640 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") 780 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
641 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 781 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
642 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 782 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
643 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 783 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
784 #elif defined __ARM_ARCH_2__ \
785 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
786 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
787 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
788 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
789 || defined __ARM_ARCH_5TEJ__
790 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
644 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \ 791 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
645 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ 792 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
793 || defined __ARM_ARCH_6T2__
646 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") 794 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
647 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \ 795 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
648 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__ 796 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
649 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") 797 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
650 #elif __aarch64__ 798 #elif __aarch64__
651 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory") 799 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
652 #elif (__sparc || __sparc__) && !__sparcv8 800 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
653 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory") 801 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
654 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") 802 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
655 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") 803 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
656 #elif defined __s390__ || defined __s390x__ 804 #elif defined __s390__ || defined __s390x__
657 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") 805 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
… …
680 #if ECB_GCC_VERSION(4,7) 828 #if ECB_GCC_VERSION(4,7)
681 /* see comment below (stdatomic.h) about the C11 memory model. */ 829 /* see comment below (stdatomic.h) about the C11 memory model. */
682 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST) 830 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
683 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE) 831 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
684 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE) 832 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
833 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
685 834
686 /* The __has_feature syntax from clang is so misdesigned that we cannot use it 835 #elif ECB_CLANG_EXTENSION(c_atomic)
687 * without risking compile time errors with other compilers. We *could*
688 * define our own ecb_clang_has_feature, but I just can't be bothered to work
689 * around this shit time and again.
690 * #elif defined __clang && __has_feature (cxx_atomic)
691 * // see comment below (stdatomic.h) about the C11 memory model. 836 /* see comment below (stdatomic.h) about the C11 memory model. */
692 * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) 837 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
693 * #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE) 838 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
694 * #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE) 839 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
695 */ 840 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
696 841
697 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ 842 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
698 #define ECB_MEMORY_FENCE __sync_synchronize () 843 #define ECB_MEMORY_FENCE __sync_synchronize ()
699 #elif _MSC_VER >= 1500 /* VC++ 2008 */ 844 #elif _MSC_VER >= 1500 /* VC++ 2008 */
700 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */ 845 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
… …
710 #elif defined _WIN32 855 #elif defined _WIN32
711 #include <WinNT.h> 856 #include <WinNT.h>
712 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ 857 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
713 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 858 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
714 #include <mbarrier.h> 859 #include <mbarrier.h>
715 #define ECB_MEMORY_FENCE __machine_rw_barrier () 860 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
716 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier () 861 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
717 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier () 862 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
863 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
718 #elif __xlC__ 864 #elif __xlC__
719 #define ECB_MEMORY_FENCE __sync () 865 #define ECB_MEMORY_FENCE __sync ()
720 #endif 866 #endif
721#endif 867#endif
722 868
723#ifndef ECB_MEMORY_FENCE 869#ifndef ECB_MEMORY_FENCE
724 #if ECB_C11 && !defined __STDC_NO_ATOMICS__ 870 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
725 /* we assume that these memory fences work on all variables/all memory accesses, */ 871 /* we assume that these memory fences work on all variables/all memory accesses, */
726 /* not just C11 atomics and atomic accesses */ 872 /* not just C11 atomics and atomic accesses */
727 #include <stdatomic.h> 873 #include <stdatomic.h>
728 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
729 /* any fence other than seq_cst, which isn't very efficient for us. */
730 /* Why that is, we don't know - either the C11 memory model is quite useless */
731 /* for most usages, or gcc and clang have a bug */
732 /* I *currently* lean towards the latter, and inefficiently implement */
733 /* all three of ecb's fences as a seq_cst fence */
734 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
735 /* for all __atomic_thread_fence's except seq_cst */
736 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst) 874 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
875 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
876 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
737 #endif 877 #endif
738#endif 878#endif
739 879
740#ifndef ECB_MEMORY_FENCE 880#ifndef ECB_MEMORY_FENCE
741 #if !ECB_AVOID_PTHREADS 881 #if !ECB_AVOID_PTHREADS
… …
761 901
762#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE 902#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
763 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 903 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
764#endif 904#endif
765 905
906#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
907 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
908#endif
909
766/*****************************************************************************/ 910/*****************************************************************************/
767 911
768#if __cplusplus 912#if ECB_CPP
769 #define ecb_inline static inline 913 #define ecb_inline static inline
770#elif ECB_GCC_VERSION(2,5) 914#elif ECB_GCC_VERSION(2,5)
771 #define ecb_inline static __inline__ 915 #define ecb_inline static __inline__
772#elif ECB_C99 916#elif ECB_C99
773 #define ecb_inline static inline 917 #define ecb_inline static inline
… …
787 931
788#define ECB_CONCAT_(a, b) a ## b 932#define ECB_CONCAT_(a, b) a ## b
789#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) 933#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
790#define ECB_STRINGIFY_(a) # a 934#define ECB_STRINGIFY_(a) # a
791#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) 935#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
936#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
792 937
793#define ecb_function_ ecb_inline 938#define ecb_function_ ecb_inline
794 939
795#if ECB_GCC_VERSION(3,1) 940#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
796 #define ecb_attribute(attrlist) __attribute__(attrlist) 941 #define ecb_attribute(attrlist) __attribute__ (attrlist)
797 #define ecb_is_constant(expr) __builtin_constant_p (expr)
798 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
799 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
800#else 942#else
801 #define ecb_attribute(attrlist) 943 #define ecb_attribute(attrlist)
944#endif
802 945
946#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
947 #define ecb_is_constant(expr) __builtin_constant_p (expr)
948#else
803 /* possible C11 impl for integral types 949 /* possible C11 impl for integral types
804 typedef struct ecb_is_constant_struct ecb_is_constant_struct; 950 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
805 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */ 951 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
806 952
807 #define ecb_is_constant(expr) 0 953 #define ecb_is_constant(expr) 0
954#endif
955
956#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
957 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
958#else
808 #define ecb_expect(expr,value) (expr) 959 #define ecb_expect(expr,value) (expr)
960#endif
961
962#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
963 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
964#else
809 #define ecb_prefetch(addr,rw,locality) 965 #define ecb_prefetch(addr,rw,locality)
810#endif 966#endif
811 967
812/* no emulation for ecb_decltype */ 968/* no emulation for ecb_decltype */
813#if ECB_GCC_VERSION(4,5) 969#if ECB_CPP11
970 // older implementations might have problems with decltype(x)::type, work around it
971 template<class T> struct ecb_decltype_t { typedef T type; };
814 #define ecb_decltype(x) __decltype(x) 972 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
815#elif ECB_GCC_VERSION(3,0) 973#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
816 #define ecb_decltype(x) __typeof(x) 974 #define ecb_decltype(x) __typeof__ (x)
817#endif 975#endif
818 976
819#if _MSC_VER >= 1300 977#if _MSC_VER >= 1300
820 #define ecb_deprecated __declspec(deprecated) 978 #define ecb_deprecated __declspec (deprecated)
821#else 979#else
822 #define ecb_deprecated ecb_attribute ((__deprecated__)) 980 #define ecb_deprecated ecb_attribute ((__deprecated__))
823#endif 981#endif
824 982
983#if _MSC_VER >= 1500
984 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
985#elif ECB_GCC_VERSION(4,5)
986 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
987#else
988 #define ecb_deprecated_message(msg) ecb_deprecated
989#endif
990
991#if _MSC_VER >= 1400
992 #define ecb_noinline __declspec (noinline)
993#else
825#define ecb_noinline ecb_attribute ((__noinline__)) 994 #define ecb_noinline ecb_attribute ((__noinline__))
995#endif
996
826#define ecb_unused ecb_attribute ((__unused__)) 997#define ecb_unused ecb_attribute ((__unused__))
827#define ecb_const ecb_attribute ((__const__)) 998#define ecb_const ecb_attribute ((__const__))
828#define ecb_pure ecb_attribute ((__pure__)) 999#define ecb_pure ecb_attribute ((__pure__))
829 1000
830/* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx __declspec(noreturn) */ 1001#if ECB_C11 || __IBMC_NORETURN
831#if ECB_C11 1002 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
832 #define ecb_noreturn _Noreturn 1003 #define ecb_noreturn _Noreturn
1004#elif ECB_CPP11
1005 #define ecb_noreturn [[noreturn]]
1006#elif _MSC_VER >= 1200
1007 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
1008 #define ecb_noreturn __declspec (noreturn)
833#else 1009#else
834 #define ecb_noreturn ecb_attribute ((__noreturn__)) 1010 #define ecb_noreturn ecb_attribute ((__noreturn__))
835#endif 1011#endif
836 1012
837#if ECB_GCC_VERSION(4,3) 1013#if ECB_GCC_VERSION(4,3)
… …
852/* for compatibility to the rest of the world */ 1028/* for compatibility to the rest of the world */
853#define ecb_likely(expr) ecb_expect_true (expr) 1029#define ecb_likely(expr) ecb_expect_true (expr)
854#define ecb_unlikely(expr) ecb_expect_false (expr) 1030#define ecb_unlikely(expr) ecb_expect_false (expr)
855 1031
856/* count trailing zero bits and count # of one bits */ 1032/* count trailing zero bits and count # of one bits */
857#if ECB_GCC_VERSION(3,4) 1033#if ECB_GCC_VERSION(3,4) \
1034 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
1035 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
1036 && ECB_CLANG_BUILTIN(__builtin_popcount))
858 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */ 1037 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
859 #define ecb_ld32(x) (__builtin_clz (x) ^ 31) 1038 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
860 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) 1039 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
861 #define ecb_ctz32(x) __builtin_ctz (x) 1040 #define ecb_ctz32(x) __builtin_ctz (x)
862 #define ecb_ctz64(x) __builtin_ctzll (x) 1041 #define ecb_ctz64(x) __builtin_ctzll (x)
863 #define ecb_popcount32(x) __builtin_popcount (x) 1042 #define ecb_popcount32(x) __builtin_popcount (x)
864 /* no popcountll */ 1043 /* no popcountll */
865#else 1044#else
866 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; 1045 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
867 ecb_function_ int 1046 ecb_function_ ecb_const int
868 ecb_ctz32 (uint32_t x) 1047 ecb_ctz32 (uint32_t x)
869 { 1048 {
1049#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1050 unsigned long r;
1051 _BitScanForward (&r, x);
1052 return (int)r;
1053#else
870 int r = 0; 1054 int r = 0;
871 1055
872 x &= ~x + 1; /* this isolates the lowest bit */ 1056 x &= ~x + 1; /* this isolates the lowest bit */
873 1057
874#if ECB_branchless_on_i386 1058#if ECB_branchless_on_i386
… …
884 if (x & 0xff00ff00) r += 8; 1068 if (x & 0xff00ff00) r += 8;
885 if (x & 0xffff0000) r += 16; 1069 if (x & 0xffff0000) r += 16;
886#endif 1070#endif
887 1071
888 return r; 1072 return r;
1073#endif
889 } 1074 }
890 1075
891 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; 1076 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
892 ecb_function_ int 1077 ecb_function_ ecb_const int
893 ecb_ctz64 (uint64_t x) 1078 ecb_ctz64 (uint64_t x)
894 { 1079 {
1080#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1081 unsigned long r;
1082 _BitScanForward64 (&r, x);
1083 return (int)r;
1084#else
895 int shift = x & 0xffffffffU ? 0 : 32; 1085 int shift = x & 0xffffffff ? 0 : 32;
896 return ecb_ctz32 (x >> shift) + shift; 1086 return ecb_ctz32 (x >> shift) + shift;
1087#endif
897 } 1088 }
898 1089
899 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; 1090 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
900 ecb_function_ int 1091 ecb_function_ ecb_const int
901 ecb_popcount32 (uint32_t x) 1092 ecb_popcount32 (uint32_t x)
902 { 1093 {
903 x -= (x >> 1) & 0x55555555; 1094 x -= (x >> 1) & 0x55555555;
904 x = ((x >> 2) & 0x33333333) + (x & 0x33333333); 1095 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
905 x = ((x >> 4) + x) & 0x0f0f0f0f; 1096 x = ((x >> 4) + x) & 0x0f0f0f0f;
906 x *= 0x01010101; 1097 x *= 0x01010101;
907 1098
908 return x >> 24; 1099 return x >> 24;
909 } 1100 }
910 1101
911 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; 1102 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
912 ecb_function_ int ecb_ld32 (uint32_t x) 1103 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
913 { 1104 {
1105#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1106 unsigned long r;
1107 _BitScanReverse (&r, x);
1108 return (int)r;
1109#else
914 int r = 0; 1110 int r = 0;
915 1111
916 if (x >> 16) { x >>= 16; r += 16; } 1112 if (x >> 16) { x >>= 16; r += 16; }
917 if (x >> 8) { x >>= 8; r += 8; } 1113 if (x >> 8) { x >>= 8; r += 8; }
918 if (x >> 4) { x >>= 4; r += 4; } 1114 if (x >> 4) { x >>= 4; r += 4; }
919 if (x >> 2) { x >>= 2; r += 2; } 1115 if (x >> 2) { x >>= 2; r += 2; }
920 if (x >> 1) { r += 1; } 1116 if (x >> 1) { r += 1; }
921 1117
922 return r; 1118 return r;
1119#endif
923 } 1120 }
924 1121
925 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; 1122 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
926 ecb_function_ int ecb_ld64 (uint64_t x) 1123 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
927 { 1124 {
1125#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1126 unsigned long r;
1127 _BitScanReverse64 (&r, x);
1128 return (int)r;
1129#else
928 int r = 0; 1130 int r = 0;
929 1131
930 if (x >> 32) { x >>= 32; r += 32; } 1132 if (x >> 32) { x >>= 32; r += 32; }
931 1133
932 return r + ecb_ld32 (x); 1134 return r + ecb_ld32 (x);
1135#endif
933 } 1136 }
934#endif 1137#endif
935 1138
936ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const; 1139ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
937ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); } 1140ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
938ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const; 1141ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
939ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); } 1142ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
940 1143
941ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const; 1144ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
942ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) 1145ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
943{ 1146{
944 return ( (x * 0x0802U & 0x22110U) 1147 return ( (x * 0x0802U & 0x22110U)
945 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; 1148 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
946} 1149}
947 1150
948ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const; 1151ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
949ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) 1152ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
950{ 1153{
951 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1); 1154 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
952 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2); 1155 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
953 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4); 1156 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
954 x = ( x >> 8 ) | ( x << 8); 1157 x = ( x >> 8 ) | ( x << 8);
955 1158
956 return x; 1159 return x;
957} 1160}
958 1161
959ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const; 1162ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
960ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) 1163ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
961{ 1164{
962 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1); 1165 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
963 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2); 1166 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
964 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4); 1167 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
965 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8); 1168 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
… …
968 return x; 1171 return x;
969} 1172}
970 1173
971/* popcount64 is only available on 64 bit cpus as gcc builtin */ 1174/* popcount64 is only available on 64 bit cpus as gcc builtin */
972/* so for this version we are lazy */ 1175/* so for this version we are lazy */
973ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 1176ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
974ecb_function_ int 1177ecb_function_ ecb_const int
975ecb_popcount64 (uint64_t x) 1178ecb_popcount64 (uint64_t x)
976{ 1179{
977 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); 1180 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
978} 1181}
979 1182
980ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const; 1183ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
981ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const; 1184ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
982ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const; 1185ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
983ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const; 1186ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
984ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const; 1187ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
985ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const; 1188ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
986ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const; 1189ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
987ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const; 1190ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
988 1191
989ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); } 1192ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
990ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); } 1193ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
991ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); } 1194ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
992ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); } 1195ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
993ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } 1196ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
994ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } 1197ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
995ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } 1198ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
996ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } 1199ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
997 1200
998#if ECB_GCC_VERSION(4,3) 1201#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1202 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1203 #define ecb_bswap16(x) __builtin_bswap16 (x)
1204 #else
999 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 1205 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1206 #endif
1000 #define ecb_bswap32(x) __builtin_bswap32 (x) 1207 #define ecb_bswap32(x) __builtin_bswap32 (x)
1001 #define ecb_bswap64(x) __builtin_bswap64 (x) 1208 #define ecb_bswap64(x) __builtin_bswap64 (x)
1209#elif _MSC_VER
1210 #include <stdlib.h>
1211 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1212 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1213 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
1002#else 1214#else
1003 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; 1215 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1004 ecb_function_ uint16_t 1216 ecb_function_ ecb_const uint16_t
1005 ecb_bswap16 (uint16_t x) 1217 ecb_bswap16 (uint16_t x)
1006 { 1218 {
1007 return ecb_rotl16 (x, 8); 1219 return ecb_rotl16 (x, 8);
1008 } 1220 }
1009 1221
1010 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; 1222 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1011 ecb_function_ uint32_t 1223 ecb_function_ ecb_const uint32_t
1012 ecb_bswap32 (uint32_t x) 1224 ecb_bswap32 (uint32_t x)
1013 { 1225 {
1014 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); 1226 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1015 } 1227 }
1016 1228
1017 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; 1229 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1018 ecb_function_ uint64_t 1230 ecb_function_ ecb_const uint64_t
1019 ecb_bswap64 (uint64_t x) 1231 ecb_bswap64 (uint64_t x)
1020 { 1232 {
1021 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); 1233 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1022 } 1234 }
1023#endif 1235#endif
1024 1236
1025#if ECB_GCC_VERSION(4,5) 1237#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1026 #define ecb_unreachable() __builtin_unreachable () 1238 #define ecb_unreachable() __builtin_unreachable ()
1027#else 1239#else
1028 /* this seems to work fine, but gcc always emits a warning for it :/ */ 1240 /* this seems to work fine, but gcc always emits a warning for it :/ */
1029 ecb_inline void ecb_unreachable (void) ecb_noreturn; 1241 ecb_inline ecb_noreturn void ecb_unreachable (void);
1030 ecb_inline void ecb_unreachable (void) { } 1242 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1031#endif 1243#endif
1032 1244
1033/* try to tell the compiler that some condition is definitely true */ 1245/* try to tell the compiler that some condition is definitely true */
1034#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0 1246#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1035 1247
1036ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const; 1248ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1037ecb_inline unsigned char 1249ecb_inline ecb_const uint32_t
1038ecb_byteorder_helper (void) 1250ecb_byteorder_helper (void)
1039{ 1251{
1040 /* the union code still generates code under pressure in gcc, */ 1252 /* the union code still generates code under pressure in gcc, */
1041 /* but less than using pointers, and always seems to */ 1253 /* but less than using pointers, and always seems to */
1042 /* successfully return a constant. */ 1254 /* successfully return a constant. */
1043 /* the reason why we have this horrible preprocessor mess */ 1255 /* the reason why we have this horrible preprocessor mess */
1044 /* is to avoid it in all cases, at least on common architectures */ 1256 /* is to avoid it in all cases, at least on common architectures */
1045 /* or when using a recent enough gcc version (>= 4.6) */ 1257 /* or when using a recent enough gcc version (>= 4.6) */
1046#if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64
1047 return 0x44;
1048#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ 1258#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1259 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1260 #define ECB_LITTLE_ENDIAN 1
1049 return 0x44; 1261 return 0x44332211;
1050#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ 1262#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1263 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1264 #define ECB_BIG_ENDIAN 1
1051 return 0x11; 1265 return 0x11223344;
1052#else 1266#else
1053 union 1267 union
1054 { 1268 {
1269 uint8_t c[4];
1055 uint32_t i; 1270 uint32_t u;
1056 uint8_t c;
1057 } u = { 0x11223344 }; 1271 } u = { 0x11, 0x22, 0x33, 0x44 };
1058 return u.c; 1272 return u.u;
1059#endif 1273#endif
1060} 1274}
1061 1275
1062ecb_inline ecb_bool ecb_big_endian (void) ecb_const; 1276ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1063ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } 1277ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1064ecb_inline ecb_bool ecb_little_endian (void) ecb_const; 1278ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1065ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } 1279ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1066 1280
1067#if ECB_GCC_VERSION(3,0) || ECB_C99 1281#if ECB_GCC_VERSION(3,0) || ECB_C99
1068 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) 1282 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1069#else 1283#else
1070 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) 1284 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1071#endif 1285#endif
1072 1286
1073#if __cplusplus 1287#if ECB_CPP
1074 template<typename T> 1288 template<typename T>
1075 static inline T ecb_div_rd (T val, T div) 1289 static inline T ecb_div_rd (T val, T div)
1076 { 1290 {
1077 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; 1291 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1078 } 1292 }
… …
1095 } 1309 }
1096#else 1310#else
1097 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1311 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1098#endif 1312#endif
1099 1313
1314ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1315ecb_function_ ecb_const uint32_t
1316ecb_binary16_to_binary32 (uint32_t x)
1317{
1318 unsigned int s = (x & 0x8000) << (31 - 15);
1319 int e = (x >> 10) & 0x001f;
1320 unsigned int m = x & 0x03ff;
1321
1322 if (ecb_expect_false (e == 31))
1323 /* infinity or NaN */
1324 e = 255 - (127 - 15);
1325 else if (ecb_expect_false (!e))
1326 {
1327 if (ecb_expect_true (!m))
1328 /* zero, handled by code below by forcing e to 0 */
1329 e = 0 - (127 - 15);
1330 else
1331 {
1332 /* subnormal, renormalise */
1333 unsigned int s = 10 - ecb_ld32 (m);
1334
1335 m = (m << s) & 0x3ff; /* mask implicit bit */
1336 e -= s - 1;
1337 }
1338 }
1339
1340 /* e and m now are normalised, or zero, (or inf or nan) */
1341 e += 127 - 15;
1342
1343 return s | (e << 23) | (m << (23 - 10));
1344}
1345
1346ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1347ecb_function_ ecb_const uint16_t
1348ecb_binary32_to_binary16 (uint32_t x)
1349{
1350 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1351 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1352 unsigned int m = x & 0x007fffff;
1353
1354 x &= 0x7fffffff;
1355
1356 /* if it's within range of binary16 normals, use fast path */
1357 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1358 {
1359 /* mantissa round-to-even */
1360 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1361
1362 /* handle overflow */
1363 if (ecb_expect_false (m >= 0x00800000))
1364 {
1365 m >>= 1;
1366 e += 1;
1367 }
1368
1369 return s | (e << 10) | (m >> (23 - 10));
1370 }
1371
1372 /* handle large numbers and infinity */
1373 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1374 return s | 0x7c00;
1375
1376 /* handle zero, subnormals and small numbers */
1377 if (ecb_expect_true (x < 0x38800000))
1378 {
1379 /* zero */
1380 if (ecb_expect_true (!x))
1381 return s;
1382
1383 /* handle subnormals */
1384
1385 /* too small, will be zero */
1386 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1387 return s;
1388
1389 m |= 0x00800000; /* make implicit bit explicit */
1390
1391 /* very tricky - we need to round to the nearest e (+10) bit value */
1392 {
1393 unsigned int bits = 14 - e;
1394 unsigned int half = (1 << (bits - 1)) - 1;
1395 unsigned int even = (m >> bits) & 1;
1396
1397 /* if this overflows, we will end up with a normalised number */
1398 m = (m + half + even) >> bits;
1399 }
1400
1401 return s | m;
1402 }
1403
1404 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1405 m >>= 13;
1406
1407 return s | 0x7c00 | m | !m;
1408}
1409
1100/*******************************************************************************/ 1410/*******************************************************************************/
1101/* floating point stuff, can be disabled by defining ECB_NO_LIBM */ 1411/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1102 1412
1103/* basically, everything uses "ieee pure-endian" floating point numbers */ 1413/* basically, everything uses "ieee pure-endian" floating point numbers */
1104/* the only noteworthy exception is ancient armle, which uses order 43218765 */ 1414/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1105#if 0 \ 1415#if 0 \
1106 || __i386 || __i386__ \ 1416 || __i386 || __i386__ \
1107 || __amd64 || __amd64__ || __x86_64 || __x86_64__ \ 1417 || ECB_GCC_AMD64 \
1108 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \ 1418 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1109 || defined __s390__ || defined __s390x__ \ 1419 || defined __s390__ || defined __s390x__ \
1110 || defined __mips__ \ 1420 || defined __mips__ \
1111 || defined __alpha__ \ 1421 || defined __alpha__ \
1112 || defined __hppa__ \ 1422 || defined __hppa__ \
1113 || defined __ia64__ \ 1423 || defined __ia64__ \
1114 || defined __m68k__ \ 1424 || defined __m68k__ \
1115 || defined __m88k__ \ 1425 || defined __m88k__ \
1116 || defined __sh__ \ 1426 || defined __sh__ \
1117 || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64 \ 1427 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1118 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \ 1428 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1119 || defined __aarch64__ 1429 || defined __aarch64__
1120 #define ECB_STDFP 1 1430 #define ECB_STDFP 1
1121 #include <string.h> /* for memcpy */ 1431 #include <string.h> /* for memcpy */
1122#else 1432#else
… …
1138 #define ECB_NAN NAN 1448 #define ECB_NAN NAN
1139 #else 1449 #else
1140 #define ECB_NAN ECB_INFINITY 1450 #define ECB_NAN ECB_INFINITY
1141 #endif 1451 #endif
1142 1452
1143 /* converts an ieee half/binary16 to a float */ 1453 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1144 ecb_function_ float ecb_binary16_to_float (uint16_t x) ecb_const; 1454 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1145 ecb_function_ float 1455 #define ecb_frexpf(x,e) frexpf ((x), (e))
1146 ecb_binary16_to_float (uint16_t x) 1456 #else
1147 { 1457 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1148 int e = (x >> 10) & 0x1f; 1458 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1149 int m = x & 0x3ff; 1459 #endif
1150 float r;
1151
1152 if (!e ) r = ldexpf (m , -24);
1153 else if (e != 31) r = ldexpf (m + 0x400, e - 25);
1154 else if (m ) r = ECB_NAN;
1155 else r = ECB_INFINITY;
1156
1157 return x & 0x8000 ? -r : r;
1158 }
1159 1460
1160 /* convert a float to ieee single/binary32 */ 1461 /* convert a float to ieee single/binary32 */
1161 ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const; 1462 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1162 ecb_function_ uint32_t 1463 ecb_function_ ecb_const uint32_t
1163 ecb_float_to_binary32 (float x) 1464 ecb_float_to_binary32 (float x)
1164 { 1465 {
1165 uint32_t r; 1466 uint32_t r;
1166 1467
1167 #if ECB_STDFP 1468 #if ECB_STDFP
… …
1174 if (x == 0e0f ) return 0x00000000U; 1475 if (x == 0e0f ) return 0x00000000U;
1175 if (x > +3.40282346638528860e+38f) return 0x7f800000U; 1476 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1176 if (x < -3.40282346638528860e+38f) return 0xff800000U; 1477 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1177 if (x != x ) return 0x7fbfffffU; 1478 if (x != x ) return 0x7fbfffffU;
1178 1479
1179 m = frexpf (x, &e) * 0x1000000U; 1480 m = ecb_frexpf (x, &e) * 0x1000000U;
1180 1481
1181 r = m & 0x80000000U; 1482 r = m & 0x80000000U;
1182 1483
1183 if (r) 1484 if (r)
1184 m = -m; 1485 m = -m;
… …
1196 1497
1197 return r; 1498 return r;
1198 } 1499 }
1199 1500
1200 /* converts an ieee single/binary32 to a float */ 1501 /* converts an ieee single/binary32 to a float */
1201 ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const; 1502 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1202 ecb_function_ float 1503 ecb_function_ ecb_const float
1203 ecb_binary32_to_float (uint32_t x) 1504 ecb_binary32_to_float (uint32_t x)
1204 { 1505 {
1205 float r; 1506 float r;
1206 1507
1207 #if ECB_STDFP 1508 #if ECB_STDFP
… …
1217 x |= 0x800000U; 1518 x |= 0x800000U;
1218 else 1519 else
1219 e = 1; 1520 e = 1;
1220 1521
1221 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */ 1522 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1222 r = ldexpf (x * (0.5f / 0x800000U), e - 126); 1523 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1223 1524
1224 r = neg ? -r : r; 1525 r = neg ? -r : r;
1225 #endif 1526 #endif
1226 1527
1227 return r; 1528 return r;
1228 } 1529 }
1229 1530
1230 /* convert a double to ieee double/binary64 */ 1531 /* convert a double to ieee double/binary64 */
1231 ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const; 1532 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1232 ecb_function_ uint64_t 1533 ecb_function_ ecb_const uint64_t
1233 ecb_double_to_binary64 (double x) 1534 ecb_double_to_binary64 (double x)
1234 { 1535 {
1235 uint64_t r; 1536 uint64_t r;
1236 1537
1237 #if ECB_STDFP 1538 #if ECB_STDFP
… …
1266 1567
1267 return r; 1568 return r;
1268 } 1569 }
1269 1570
1270 /* converts an ieee double/binary64 to a double */ 1571 /* converts an ieee double/binary64 to a double */
1271 ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const; 1572 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1272 ecb_function_ double 1573 ecb_function_ ecb_const double
1273 ecb_binary64_to_double (uint64_t x) 1574 ecb_binary64_to_double (uint64_t x)
1274 { 1575 {
1275 double r; 1576 double r;
1276 1577
1277 #if ECB_STDFP 1578 #if ECB_STDFP
… …
1295 #endif 1596 #endif
1296 1597
1297 return r; 1598 return r;
1298 } 1599 }
1299 1600
1601 /* convert a float to ieee half/binary16 */
1602 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1603 ecb_function_ ecb_const uint16_t
1604 ecb_float_to_binary16 (float x)
1605 {
1606 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1607 }
1608
1609 /* convert an ieee half/binary16 to float */
1610 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1611 ecb_function_ ecb_const float
1612 ecb_binary16_to_float (uint16_t x)
1613 {
1614 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1615 }
1616
1300#endif 1617#endif
1301 1618
1302#endif 1619#endif
1303 1620
1304/* ECB.H END */ 1621/* ECB.H END */
1305 1622
1306#if ECB_MEMORY_FENCE_NEEDS_PTHREADS 1623#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1307/* if your architecture doesn't need memory fences, e.g. because it is 1624/* if your architecture doesn't need memory fences, e.g. because it is
1308 * single-cpu/core, or if you use libev in a project that doesn't use libev 1625 * single-cpu/core, or if you use libev in a project that doesn't use libev
1309 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling 1626 * from multiple threads, then you can define ECB_NO_THREADS when compiling
1310 * libev, in which cases the memory fences become nops. 1627 * libev, in which cases the memory fences become nops.
1311 * alternatively, you can remove this #error and link against libpthread, 1628 * alternatively, you can remove this #error and link against libpthread,
1312 * which will then provide the memory fences. 1629 * which will then provide the memory fences.
1313 */ 1630 */
1314# error "memory fences not defined for your architecture, please report" 1631# error "memory fences not defined for your architecture, please report"
… …
1318# define ECB_MEMORY_FENCE do { } while (0) 1635# define ECB_MEMORY_FENCE do { } while (0)
1319# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 1636# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1320# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 1637# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1321#endif 1638#endif
1322 1639
1323#define expect_false(cond) ecb_expect_false (cond)
1324#define expect_true(cond) ecb_expect_true (cond)
1325#define noinline ecb_noinline
1326
1327#define inline_size ecb_inline 1640#define inline_size ecb_inline
1328 1641
1329#if EV_FEATURE_CODE 1642#if EV_FEATURE_CODE
1330# define inline_speed ecb_inline 1643# define inline_speed ecb_inline
1331#else 1644#else
1332# define inline_speed static noinline 1645# define inline_speed ecb_noinline static
1333#endif 1646#endif
1647
1648/*****************************************************************************/
1649/* raw syscall wrappers */
1650
1651#if EV_NEED_SYSCALL
1652
1653#include <sys/syscall.h>
1654
1655/*
1656 * define some syscall wrappers for common architectures
1657 * this is mostly for nice looks during debugging, not performance.
1658 * our syscalls return < 0, not == -1, on error. which is good
1659 * enough for linux aio.
1660 * TODO: arm is also common nowadays, maybe even mips and x86
1661 * TODO: after implementing this, it suddenly looks like overkill, but its hard to remove...
1662 */
1663#if __GNUC__ && __linux && ECB_AMD64 && !defined __OPTIMIZE_SIZE__
1664 /* the costly errno access probably kills this for size optimisation */
1665
1666 #define ev_syscall(nr,narg,arg1,arg2,arg3,arg4,arg5,arg6) \
1667 ({ \
1668 long res; \
1669 register unsigned long r6 __asm__ ("r9" ); \
1670 register unsigned long r5 __asm__ ("r8" ); \
1671 register unsigned long r4 __asm__ ("r10"); \
1672 register unsigned long r3 __asm__ ("rdx"); \
1673 register unsigned long r2 __asm__ ("rsi"); \
1674 register unsigned long r1 __asm__ ("rdi"); \
1675 if (narg >= 6) r6 = (unsigned long)(arg6); \
1676 if (narg >= 5) r5 = (unsigned long)(arg5); \
1677 if (narg >= 4) r4 = (unsigned long)(arg4); \
1678 if (narg >= 3) r3 = (unsigned long)(arg3); \
1679 if (narg >= 2) r2 = (unsigned long)(arg2); \
1680 if (narg >= 1) r1 = (unsigned long)(arg1); \
1681 __asm__ __volatile__ ( \
1682 "syscall\n\t" \
1683 : "=a" (res) \
1684 : "0" (nr), "r" (r1), "r" (r2), "r" (r3), "r" (r4), "r" (r5) \
1685 : "cc", "r11", "cx", "memory"); \
1686 errno = -res; \
1687 res; \
1688 })
1689
1690#endif
1691
1692#ifdef ev_syscall
1693 #define ev_syscall0(nr) ev_syscall (nr, 0, 0, 0, 0, 0, 0, 0)
1694 #define ev_syscall1(nr,arg1) ev_syscall (nr, 1, arg1, 0, 0, 0, 0, 0)
1695 #define ev_syscall2(nr,arg1,arg2) ev_syscall (nr, 2, arg1, arg2, 0, 0, 0, 0)
1696 #define ev_syscall3(nr,arg1,arg2,arg3) ev_syscall (nr, 3, arg1, arg2, arg3, 0, 0, 0)
1697 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) ev_syscall (nr, 3, arg1, arg2, arg3, arg4, 0, 0)
1698 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) ev_syscall (nr, 5, arg1, arg2, arg3, arg4, arg5, 0)
1699 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) ev_syscall (nr, 6, arg1, arg2, arg3, arg4, arg5,arg6)
1700#else
1701 #define ev_syscall0(nr) syscall (nr)
1702 #define ev_syscall1(nr,arg1) syscall (nr, arg1)
1703 #define ev_syscall2(nr,arg1,arg2) syscall (nr, arg1, arg2)
1704 #define ev_syscall3(nr,arg1,arg2,arg3) syscall (nr, arg1, arg2, arg3)
1705 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) syscall (nr, arg1, arg2, arg3, arg4)
1706 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) syscall (nr, arg1, arg2, arg3, arg4, arg5)
1707 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) syscall (nr, arg1, arg2, arg3, arg4, arg5,arg6)
1708#endif
1709
1710#endif
1711
1712/*****************************************************************************/
1334 1713
1335#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1714#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
1336 1715
1337#if EV_MINPRI == EV_MAXPRI 1716#if EV_MINPRI == EV_MAXPRI
1338# define ABSPRI(w) (((W)w), 0) 1717# define ABSPRI(w) (((W)w), 0)
1339#else 1718#else
1340# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1719# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
1341#endif 1720#endif
1342 1721
1343#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1722#define EMPTY /* required for microsofts broken pseudo-c compiler */
1344#define EMPTY2(a,b) /* used to suppress some warnings */
1345 1723
1346typedef ev_watcher *W; 1724typedef ev_watcher *W;
1347typedef ev_watcher_list *WL; 1725typedef ev_watcher_list *WL;
1348typedef ev_watcher_time *WT; 1726typedef ev_watcher_time *WT;
1349 1727
… …
1374# include "ev_win32.c" 1752# include "ev_win32.c"
1375#endif 1753#endif
1376 1754
1377/*****************************************************************************/ 1755/*****************************************************************************/
1378 1756
1757#if EV_USE_LINUXAIO
1758# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1759#endif
1760
1379/* define a suitable floor function (only used by periodics atm) */ 1761/* define a suitable floor function (only used by periodics atm) */
1380 1762
1381#if EV_USE_FLOOR 1763#if EV_USE_FLOOR
1382# include <math.h> 1764# include <math.h>
1383# define ev_floor(v) floor (v) 1765# define ev_floor(v) floor (v)
1384#else 1766#else
1385 1767
1386#include <float.h> 1768#include <float.h>
1387 1769
1388/* a floor() replacement function, should be independent of ev_tstamp type */ 1770/* a floor() replacement function, should be independent of ev_tstamp type */
1771ecb_noinline
1389static ev_tstamp noinline 1772static ev_tstamp
1390ev_floor (ev_tstamp v) 1773ev_floor (ev_tstamp v)
1391{ 1774{
1392 /* the choice of shift factor is not terribly important */ 1775 /* the choice of shift factor is not terribly important */
1393#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1776#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1394 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1777 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1395#else 1778#else
1396 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; 1779 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1397#endif 1780#endif
1398 1781
1782 /* special treatment for negative arguments */
1783 if (ecb_expect_false (v < 0.))
1784 {
1785 ev_tstamp f = -ev_floor (-v);
1786
1787 return f - (f == v ? 0 : 1);
1788 }
1789
1399 /* argument too large for an unsigned long? */ 1790 /* argument too large for an unsigned long? then reduce it */
1400 if (expect_false (v >= shift)) 1791 if (ecb_expect_false (v >= shift))
1401 { 1792 {
1402 ev_tstamp f; 1793 ev_tstamp f;
1403 1794
1404 if (v == v - 1.) 1795 if (v == v - 1.)
1405 return v; /* very large number */ 1796 return v; /* very large numbers are assumed to be integer */
1406 1797
1407 f = shift * ev_floor (v * (1. / shift)); 1798 f = shift * ev_floor (v * (1. / shift));
1408 return f + ev_floor (v - f); 1799 return f + ev_floor (v - f);
1409 } 1800 }
1410 1801
1411 /* special treatment for negative args? */
1412 if (expect_false (v < 0.))
1413 {
1414 ev_tstamp f = -ev_floor (-v);
1415
1416 return f - (f == v ? 0 : 1);
1417 }
1418
1419 /* fits into an unsigned long */ 1802 /* fits into an unsigned long */
1420 return (unsigned long)v; 1803 return (unsigned long)v;
1421} 1804}
1422 1805
1423#endif 1806#endif
… …
1426 1809
1427#ifdef __linux 1810#ifdef __linux
1428# include <sys/utsname.h> 1811# include <sys/utsname.h>
1429#endif 1812#endif
1430 1813
1431static unsigned int noinline ecb_cold 1814ecb_noinline ecb_cold
1815static unsigned int
1432ev_linux_version (void) 1816ev_linux_version (void)
1433{ 1817{
1434#ifdef __linux 1818#ifdef __linux
1435 unsigned int v = 0; 1819 unsigned int v = 0;
1436 struct utsname buf; 1820 struct utsname buf;
… …
1465} 1849}
1466 1850
1467/*****************************************************************************/ 1851/*****************************************************************************/
1468 1852
1469#if EV_AVOID_STDIO 1853#if EV_AVOID_STDIO
1470static void noinline ecb_cold 1854ecb_noinline ecb_cold
1855static void
1471ev_printerr (const char *msg) 1856ev_printerr (const char *msg)
1472{ 1857{
1473 write (STDERR_FILENO, msg, strlen (msg)); 1858 write (STDERR_FILENO, msg, strlen (msg));
1474} 1859}
1475#endif 1860#endif
1476 1861
1477static void (*syserr_cb)(const char *msg) EV_THROW; 1862static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
1478 1863
1479void ecb_cold 1864ecb_cold
1865void
1480ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW 1866ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
1481{ 1867{
1482 syserr_cb = cb; 1868 syserr_cb = cb;
1483} 1869}
1484 1870
1485static void noinline ecb_cold 1871ecb_noinline ecb_cold
1872static void
1486ev_syserr (const char *msg) 1873ev_syserr (const char *msg)
1487{ 1874{
1488 if (!msg) 1875 if (!msg)
1489 msg = "(libev) system error"; 1876 msg = "(libev) system error";
1490 1877
… …
1503 abort (); 1890 abort ();
1504 } 1891 }
1505} 1892}
1506 1893
1507static void * 1894static void *
1508ev_realloc_emul (void *ptr, long size) EV_THROW 1895ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
1509{ 1896{
1510 /* some systems, notably openbsd and darwin, fail to properly 1897 /* some systems, notably openbsd and darwin, fail to properly
1511 * implement realloc (x, 0) (as required by both ansi c-89 and 1898 * implement realloc (x, 0) (as required by both ansi c-89 and
1512 * the single unix specification, so work around them here. 1899 * the single unix specification, so work around them here.
1513 * recently, also (at least) fedora and debian started breaking it, 1900 * recently, also (at least) fedora and debian started breaking it,
… …
1519 1906
1520 free (ptr); 1907 free (ptr);
1521 return 0; 1908 return 0;
1522} 1909}
1523 1910
1524static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul; 1911static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
1525 1912
1526void ecb_cold 1913ecb_cold
1914void
1527ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW 1915ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
1528{ 1916{
1529 alloc = cb; 1917 alloc = cb;
1530} 1918}
1531 1919
1532inline_speed void * 1920inline_speed void *
… …
1559typedef struct 1947typedef struct
1560{ 1948{
1561 WL head; 1949 WL head;
1562 unsigned char events; /* the events watched for */ 1950 unsigned char events; /* the events watched for */
1563 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 1951 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
1564 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1952 unsigned char emask; /* some backends store the actual kernel mask in here */
1565 unsigned char unused; 1953 unsigned char eflags; /* flags field for use by backends */
1566#if EV_USE_EPOLL 1954#if EV_USE_EPOLL
1567 unsigned int egen; /* generation counter to counter epoll bugs */ 1955 unsigned int egen; /* generation counter to counter epoll bugs */
1568#endif 1956#endif
1569#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 1957#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1570 SOCKET handle; 1958 SOCKET handle;
… …
1624 static struct ev_loop default_loop_struct; 2012 static struct ev_loop default_loop_struct;
1625 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */ 2013 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
1626 2014
1627#else 2015#else
1628 2016
1629 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */ 2017 EV_API_DECL ev_tstamp ev_rt_now = EV_TS_CONST (0.); /* needs to be initialised to make it a definition despite extern */
1630 #define VAR(name,decl) static decl; 2018 #define VAR(name,decl) static decl;
1631 #include "ev_vars.h" 2019 #include "ev_vars.h"
1632 #undef VAR 2020 #undef VAR
1633 2021
1634 static int ev_default_loop_ptr; 2022 static int ev_default_loop_ptr;
1635 2023
1636#endif 2024#endif
1637 2025
1638#if EV_FEATURE_API 2026#if EV_FEATURE_API
1639# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 2027# define EV_RELEASE_CB if (ecb_expect_false (release_cb)) release_cb (EV_A)
1640# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 2028# define EV_ACQUIRE_CB if (ecb_expect_false (acquire_cb)) acquire_cb (EV_A)
1641# define EV_INVOKE_PENDING invoke_cb (EV_A) 2029# define EV_INVOKE_PENDING invoke_cb (EV_A)
1642#else 2030#else
1643# define EV_RELEASE_CB (void)0 2031# define EV_RELEASE_CB (void)0
1644# define EV_ACQUIRE_CB (void)0 2032# define EV_ACQUIRE_CB (void)0
1645# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 2033# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
… …
1649 2037
1650/*****************************************************************************/ 2038/*****************************************************************************/
1651 2039
1652#ifndef EV_HAVE_EV_TIME 2040#ifndef EV_HAVE_EV_TIME
1653ev_tstamp 2041ev_tstamp
1654ev_time (void) EV_THROW 2042ev_time (void) EV_NOEXCEPT
1655{ 2043{
1656#if EV_USE_REALTIME 2044#if EV_USE_REALTIME
1657 if (expect_true (have_realtime)) 2045 if (ecb_expect_true (have_realtime))
1658 { 2046 {
1659 struct timespec ts; 2047 struct timespec ts;
1660 clock_gettime (CLOCK_REALTIME, &ts); 2048 clock_gettime (CLOCK_REALTIME, &ts);
1661 return ts.tv_sec + ts.tv_nsec * 1e-9; 2049 return EV_TS_GET (ts);
1662 } 2050 }
1663#endif 2051#endif
1664 2052
2053 {
1665 struct timeval tv; 2054 struct timeval tv;
1666 gettimeofday (&tv, 0); 2055 gettimeofday (&tv, 0);
1667 return tv.tv_sec + tv.tv_usec * 1e-6; 2056 return EV_TV_GET (tv);
2057 }
1668} 2058}
1669#endif 2059#endif
1670 2060
1671inline_size ev_tstamp 2061inline_size ev_tstamp
1672get_clock (void) 2062get_clock (void)
1673{ 2063{
1674#if EV_USE_MONOTONIC 2064#if EV_USE_MONOTONIC
1675 if (expect_true (have_monotonic)) 2065 if (ecb_expect_true (have_monotonic))
1676 { 2066 {
1677 struct timespec ts; 2067 struct timespec ts;
1678 clock_gettime (CLOCK_MONOTONIC, &ts); 2068 clock_gettime (CLOCK_MONOTONIC, &ts);
1679 return ts.tv_sec + ts.tv_nsec * 1e-9; 2069 return EV_TS_GET (ts);
1680 } 2070 }
1681#endif 2071#endif
1682 2072
1683 return ev_time (); 2073 return ev_time ();
1684} 2074}
1685 2075
1686#if EV_MULTIPLICITY 2076#if EV_MULTIPLICITY
1687ev_tstamp 2077ev_tstamp
1688ev_now (EV_P) EV_THROW 2078ev_now (EV_P) EV_NOEXCEPT
1689{ 2079{
1690 return ev_rt_now; 2080 return ev_rt_now;
1691} 2081}
1692#endif 2082#endif
1693 2083
1694void 2084void
1695ev_sleep (ev_tstamp delay) EV_THROW 2085ev_sleep (ev_tstamp delay) EV_NOEXCEPT
1696{ 2086{
1697 if (delay > 0.) 2087 if (delay > EV_TS_CONST (0.))
1698 { 2088 {
1699#if EV_USE_NANOSLEEP 2089#if EV_USE_NANOSLEEP
1700 struct timespec ts; 2090 struct timespec ts;
1701 2091
1702 EV_TS_SET (ts, delay); 2092 EV_TS_SET (ts, delay);
1703 nanosleep (&ts, 0); 2093 nanosleep (&ts, 0);
1704#elif defined _WIN32 2094#elif defined _WIN32
2095 /* maybe this should round up, as ms is very low resolution */
2096 /* compared to select (µs) or nanosleep (ns) */
1705 Sleep ((unsigned long)(delay * 1e3)); 2097 Sleep ((unsigned long)(EV_TS_TO_MSEC (delay)));
1706#else 2098#else
1707 struct timeval tv; 2099 struct timeval tv;
1708 2100
1709 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 2101 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
1710 /* something not guaranteed by newer posix versions, but guaranteed */ 2102 /* something not guaranteed by newer posix versions, but guaranteed */
… …
1740 } 2132 }
1741 2133
1742 return ncur; 2134 return ncur;
1743} 2135}
1744 2136
1745static void * noinline ecb_cold 2137ecb_noinline ecb_cold
2138static void *
1746array_realloc (int elem, void *base, int *cur, int cnt) 2139array_realloc (int elem, void *base, int *cur, int cnt)
1747{ 2140{
1748 *cur = array_nextsize (elem, *cur, cnt); 2141 *cur = array_nextsize (elem, *cur, cnt);
1749 return ev_realloc (base, elem * *cur); 2142 return ev_realloc (base, elem * *cur);
1750} 2143}
1751 2144
2145#define array_needsize_noinit(base,offset,count)
2146
1752#define array_init_zero(base,count) \ 2147#define array_needsize_zerofill(base,offset,count) \
1753 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2148 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
1754 2149
1755#define array_needsize(type,base,cur,cnt,init) \ 2150#define array_needsize(type,base,cur,cnt,init) \
1756 if (expect_false ((cnt) > (cur))) \ 2151 if (ecb_expect_false ((cnt) > (cur))) \
1757 { \ 2152 { \
1758 int ecb_unused ocur_ = (cur); \ 2153 ecb_unused int ocur_ = (cur); \
1759 (base) = (type *)array_realloc \ 2154 (base) = (type *)array_realloc \
1760 (sizeof (type), (base), &(cur), (cnt)); \ 2155 (sizeof (type), (base), &(cur), (cnt)); \
1761 init ((base) + (ocur_), (cur) - ocur_); \ 2156 init ((base), ocur_, ((cur) - ocur_)); \
1762 } 2157 }
1763 2158
1764#if 0 2159#if 0
1765#define array_slim(type,stem) \ 2160#define array_slim(type,stem) \
1766 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2161 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
1775 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2170 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
1776 2171
1777/*****************************************************************************/ 2172/*****************************************************************************/
1778 2173
1779/* dummy callback for pending events */ 2174/* dummy callback for pending events */
1780static void noinline 2175ecb_noinline
2176static void
1781pendingcb (EV_P_ ev_prepare *w, int revents) 2177pendingcb (EV_P_ ev_prepare *w, int revents)
1782{ 2178{
1783} 2179}
1784 2180
1785void noinline 2181ecb_noinline
2182void
1786ev_feed_event (EV_P_ void *w, int revents) EV_THROW 2183ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
1787{ 2184{
1788 W w_ = (W)w; 2185 W w_ = (W)w;
1789 int pri = ABSPRI (w_); 2186 int pri = ABSPRI (w_);
1790 2187
1791 if (expect_false (w_->pending)) 2188 if (ecb_expect_false (w_->pending))
1792 pendings [pri][w_->pending - 1].events |= revents; 2189 pendings [pri][w_->pending - 1].events |= revents;
1793 else 2190 else
1794 { 2191 {
1795 w_->pending = ++pendingcnt [pri]; 2192 w_->pending = ++pendingcnt [pri];
1796 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2193 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
1797 pendings [pri][w_->pending - 1].w = w_; 2194 pendings [pri][w_->pending - 1].w = w_;
1798 pendings [pri][w_->pending - 1].events = revents; 2195 pendings [pri][w_->pending - 1].events = revents;
1799 } 2196 }
1800 2197
1801 pendingpri = NUMPRI - 1; 2198 pendingpri = NUMPRI - 1;
1802} 2199}
1803 2200
1804inline_speed void 2201inline_speed void
1805feed_reverse (EV_P_ W w) 2202feed_reverse (EV_P_ W w)
1806{ 2203{
1807 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2204 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
1808 rfeeds [rfeedcnt++] = w; 2205 rfeeds [rfeedcnt++] = w;
1809} 2206}
1810 2207
1811inline_size void 2208inline_size void
1812feed_reverse_done (EV_P_ int revents) 2209feed_reverse_done (EV_P_ int revents)
… …
1847inline_speed void 2244inline_speed void
1848fd_event (EV_P_ int fd, int revents) 2245fd_event (EV_P_ int fd, int revents)
1849{ 2246{
1850 ANFD *anfd = anfds + fd; 2247 ANFD *anfd = anfds + fd;
1851 2248
1852 if (expect_true (!anfd->reify)) 2249 if (ecb_expect_true (!anfd->reify))
1853 fd_event_nocheck (EV_A_ fd, revents); 2250 fd_event_nocheck (EV_A_ fd, revents);
1854} 2251}
1855 2252
1856void 2253void
1857ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW 2254ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
1858{ 2255{
1859 if (fd >= 0 && fd < anfdmax) 2256 if (fd >= 0 && fd < anfdmax)
1860 fd_event_nocheck (EV_A_ fd, revents); 2257 fd_event_nocheck (EV_A_ fd, revents);
1861} 2258}
1862 2259
… …
1899 ev_io *w; 2296 ev_io *w;
1900 2297
1901 unsigned char o_events = anfd->events; 2298 unsigned char o_events = anfd->events;
1902 unsigned char o_reify = anfd->reify; 2299 unsigned char o_reify = anfd->reify;
1903 2300
1904 anfd->reify = 0; 2301 anfd->reify = 0;
1905 2302
1906 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 2303 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
1907 { 2304 {
1908 anfd->events = 0; 2305 anfd->events = 0;
1909 2306
1910 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2307 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1911 anfd->events |= (unsigned char)w->events; 2308 anfd->events |= (unsigned char)w->events;
… …
1920 2317
1921 fdchangecnt = 0; 2318 fdchangecnt = 0;
1922} 2319}
1923 2320
1924/* something about the given fd changed */ 2321/* something about the given fd changed */
1925inline_size void 2322inline_size
2323void
1926fd_change (EV_P_ int fd, int flags) 2324fd_change (EV_P_ int fd, int flags)
1927{ 2325{
1928 unsigned char reify = anfds [fd].reify; 2326 unsigned char reify = anfds [fd].reify;
1929 anfds [fd].reify |= flags; 2327 anfds [fd].reify |= flags;
1930 2328
1931 if (expect_true (!reify)) 2329 if (ecb_expect_true (!reify))
1932 { 2330 {
1933 ++fdchangecnt; 2331 ++fdchangecnt;
1934 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2332 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
1935 fdchanges [fdchangecnt - 1] = fd; 2333 fdchanges [fdchangecnt - 1] = fd;
1936 } 2334 }
1937} 2335}
1938 2336
1939/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2337/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1940inline_speed void ecb_cold 2338inline_speed ecb_cold void
1941fd_kill (EV_P_ int fd) 2339fd_kill (EV_P_ int fd)
1942{ 2340{
1943 ev_io *w; 2341 ev_io *w;
1944 2342
1945 while ((w = (ev_io *)anfds [fd].head)) 2343 while ((w = (ev_io *)anfds [fd].head))
… …
1948 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2346 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1949 } 2347 }
1950} 2348}
1951 2349
1952/* check whether the given fd is actually valid, for error recovery */ 2350/* check whether the given fd is actually valid, for error recovery */
1953inline_size int ecb_cold 2351inline_size ecb_cold int
1954fd_valid (int fd) 2352fd_valid (int fd)
1955{ 2353{
1956#ifdef _WIN32 2354#ifdef _WIN32
1957 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2355 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1958#else 2356#else
1959 return fcntl (fd, F_GETFD) != -1; 2357 return fcntl (fd, F_GETFD) != -1;
1960#endif 2358#endif
1961} 2359}
1962 2360
1963/* called on EBADF to verify fds */ 2361/* called on EBADF to verify fds */
1964static void noinline ecb_cold 2362ecb_noinline ecb_cold
2363static void
1965fd_ebadf (EV_P) 2364fd_ebadf (EV_P)
1966{ 2365{
1967 int fd; 2366 int fd;
1968 2367
1969 for (fd = 0; fd < anfdmax; ++fd) 2368 for (fd = 0; fd < anfdmax; ++fd)
… …
1971 if (!fd_valid (fd) && errno == EBADF) 2370 if (!fd_valid (fd) && errno == EBADF)
1972 fd_kill (EV_A_ fd); 2371 fd_kill (EV_A_ fd);
1973} 2372}
1974 2373
1975/* called on ENOMEM in select/poll to kill some fds and retry */ 2374/* called on ENOMEM in select/poll to kill some fds and retry */
1976static void noinline ecb_cold 2375ecb_noinline ecb_cold
2376static void
1977fd_enomem (EV_P) 2377fd_enomem (EV_P)
1978{ 2378{
1979 int fd; 2379 int fd;
1980 2380
1981 for (fd = anfdmax; fd--; ) 2381 for (fd = anfdmax; fd--; )
… …
1985 break; 2385 break;
1986 } 2386 }
1987} 2387}
1988 2388
1989/* usually called after fork if backend needs to re-arm all fds from scratch */ 2389/* usually called after fork if backend needs to re-arm all fds from scratch */
1990static void noinline 2390ecb_noinline
2391static void
1991fd_rearm_all (EV_P) 2392fd_rearm_all (EV_P)
1992{ 2393{
1993 int fd; 2394 int fd;
1994 2395
1995 for (fd = 0; fd < anfdmax; ++fd) 2396 for (fd = 0; fd < anfdmax; ++fd)
… …
2048 ev_tstamp minat; 2449 ev_tstamp minat;
2049 ANHE *minpos; 2450 ANHE *minpos;
2050 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2451 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
2051 2452
2052 /* find minimum child */ 2453 /* find minimum child */
2053 if (expect_true (pos + DHEAP - 1 < E)) 2454 if (ecb_expect_true (pos + DHEAP - 1 < E))
2054 { 2455 {
2055 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2456 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
2056 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2457 if ( minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
2057 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2458 if ( minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
2058 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2459 if ( minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
2059 } 2460 }
2060 else if (pos < E) 2461 else if (pos < E)
2061 { 2462 {
2062 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2463 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
2063 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2464 if (pos + 1 < E && minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
2064 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2465 if (pos + 2 < E && minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
2065 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2466 if (pos + 3 < E && minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
2066 } 2467 }
2067 else 2468 else
2068 break; 2469 break;
2069 2470
2070 if (ANHE_at (he) <= minat) 2471 if (ANHE_at (he) <= minat)
… …
2078 2479
2079 heap [k] = he; 2480 heap [k] = he;
2080 ev_active (ANHE_w (he)) = k; 2481 ev_active (ANHE_w (he)) = k;
2081} 2482}
2082 2483
2083#else /* 4HEAP */ 2484#else /* not 4HEAP */
2084 2485
2085#define HEAP0 1 2486#define HEAP0 1
2086#define HPARENT(k) ((k) >> 1) 2487#define HPARENT(k) ((k) >> 1)
2087#define UPHEAP_DONE(p,k) (!(p)) 2488#define UPHEAP_DONE(p,k) (!(p))
2088 2489
… …
2176 2577
2177/*****************************************************************************/ 2578/*****************************************************************************/
2178 2579
2179#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2580#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2180 2581
2181static void noinline ecb_cold 2582ecb_noinline ecb_cold
2583static void
2182evpipe_init (EV_P) 2584evpipe_init (EV_P)
2183{ 2585{
2184 if (!ev_is_active (&pipe_w)) 2586 if (!ev_is_active (&pipe_w))
2185 { 2587 {
2186 int fds [2]; 2588 int fds [2];
… …
2226inline_speed void 2628inline_speed void
2227evpipe_write (EV_P_ EV_ATOMIC_T *flag) 2629evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2228{ 2630{
2229 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */ 2631 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2230 2632
2231 if (expect_true (*flag)) 2633 if (ecb_expect_true (*flag))
2232 return; 2634 return;
2233 2635
2234 *flag = 1; 2636 *flag = 1;
2235 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */ 2637 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2236 2638
… …
2257#endif 2659#endif
2258 { 2660 {
2259#ifdef _WIN32 2661#ifdef _WIN32
2260 WSABUF buf; 2662 WSABUF buf;
2261 DWORD sent; 2663 DWORD sent;
2262 buf.buf = &buf; 2664 buf.buf = (char *)&buf;
2263 buf.len = 1; 2665 buf.len = 1;
2264 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0); 2666 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2265#else 2667#else
2266 write (evpipe [1], &(evpipe [1]), 1); 2668 write (evpipe [1], &(evpipe [1]), 1);
2267#endif 2669#endif
… …
2313 sig_pending = 0; 2715 sig_pending = 0;
2314 2716
2315 ECB_MEMORY_FENCE; 2717 ECB_MEMORY_FENCE;
2316 2718
2317 for (i = EV_NSIG - 1; i--; ) 2719 for (i = EV_NSIG - 1; i--; )
2318 if (expect_false (signals [i].pending)) 2720 if (ecb_expect_false (signals [i].pending))
2319 ev_feed_signal_event (EV_A_ i + 1); 2721 ev_feed_signal_event (EV_A_ i + 1);
2320 } 2722 }
2321#endif 2723#endif
2322 2724
2323#if EV_ASYNC_ENABLE 2725#if EV_ASYNC_ENABLE
… …
2339} 2741}
2340 2742
2341/*****************************************************************************/ 2743/*****************************************************************************/
2342 2744
2343void 2745void
2344ev_feed_signal (int signum) EV_THROW 2746ev_feed_signal (int signum) EV_NOEXCEPT
2345{ 2747{
2346#if EV_MULTIPLICITY 2748#if EV_MULTIPLICITY
2347 EV_P; 2749 EV_P;
2348 ECB_MEMORY_FENCE_ACQUIRE; 2750 ECB_MEMORY_FENCE_ACQUIRE;
2349 EV_A = signals [signum - 1].loop; 2751 EV_A = signals [signum - 1].loop;
… …
2364#endif 2766#endif
2365 2767
2366 ev_feed_signal (signum); 2768 ev_feed_signal (signum);
2367} 2769}
2368 2770
2369void noinline 2771ecb_noinline
2772void
2370ev_feed_signal_event (EV_P_ int signum) EV_THROW 2773ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
2371{ 2774{
2372 WL w; 2775 WL w;
2373 2776
2374 if (expect_false (signum <= 0 || signum >= EV_NSIG)) 2777 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
2375 return; 2778 return;
2376 2779
2377 --signum; 2780 --signum;
2378 2781
2379#if EV_MULTIPLICITY 2782#if EV_MULTIPLICITY
2380 /* it is permissible to try to feed a signal to the wrong loop */ 2783 /* it is permissible to try to feed a signal to the wrong loop */
2381 /* or, likely more useful, feeding a signal nobody is waiting for */ 2784 /* or, likely more useful, feeding a signal nobody is waiting for */
2382 2785
2383 if (expect_false (signals [signum].loop != EV_A)) 2786 if (ecb_expect_false (signals [signum].loop != EV_A))
2384 return; 2787 return;
2385#endif 2788#endif
2386 2789
2387 signals [signum].pending = 0; 2790 signals [signum].pending = 0;
2388 ECB_MEMORY_FENCE_RELEASE; 2791 ECB_MEMORY_FENCE_RELEASE;
… …
2472 2875
2473#endif 2876#endif
2474 2877
2475/*****************************************************************************/ 2878/*****************************************************************************/
2476 2879
2880#if EV_USE_TIMERFD
2881
2882static void periodics_reschedule (EV_P);
2883
2884static void
2885timerfdcb (EV_P_ ev_io *iow, int revents)
2886{
2887 struct itimerspec its = { 0 };
2888
2889 /* since we can't easily come zup with a (portable) maximum value of time_t,
2890 * we wake up once per month, which hopefully is rare enough to not
2891 * be a problem. */
2892 its.it_value.tv_sec = ev_rt_now + 86400 * 30;
2893 timerfd_settime (timerfd, TFD_TIMER_ABSTIME | TFD_TIMER_CANCEL_ON_SET, &its, 0);
2894
2895 ev_rt_now = ev_time ();
2896 /* periodics_reschedule only needs ev_rt_now */
2897 /* but maybe in the future we want the full treatment. */
2898 /*
2899 now_floor = EV_TS_CONST (0.);
2900 time_update (EV_A_ EV_TSTAMP_HUGE);
2901 */
2902 periodics_reschedule (EV_A);
2903}
2904
2905ecb_noinline ecb_cold
2906static void
2907evtimerfd_init (EV_P)
2908{
2909 if (!ev_is_active (&timerfd_w))
2910 {
2911 timerfd = timerfd_create (CLOCK_REALTIME, TFD_NONBLOCK | TFD_CLOEXEC);
2912
2913 if (timerfd >= 0)
2914 {
2915 fd_intern (timerfd); /* just to be sure */
2916
2917 ev_io_init (&timerfd_w, timerfdcb, timerfd, EV_READ);
2918 ev_set_priority (&timerfd_w, EV_MINPRI);
2919 ev_io_start (EV_A_ &timerfd_w);
2920 ev_unref (EV_A); /* watcher should not keep loop alive */
2921
2922 /* (re-) arm timer */
2923 timerfdcb (EV_A_ 0, 0);
2924 }
2925 }
2926}
2927
2928#endif
2929
2930/*****************************************************************************/
2931
2477#if EV_USE_IOCP 2932#if EV_USE_IOCP
2478# include "ev_iocp.c" 2933# include "ev_iocp.c"
2479#endif 2934#endif
2480#if EV_USE_PORT 2935#if EV_USE_PORT
2481# include "ev_port.c" 2936# include "ev_port.c"
… …
2484# include "ev_kqueue.c" 2939# include "ev_kqueue.c"
2485#endif 2940#endif
2486#if EV_USE_EPOLL 2941#if EV_USE_EPOLL
2487# include "ev_epoll.c" 2942# include "ev_epoll.c"
2488#endif 2943#endif
2944#if EV_USE_LINUXAIO
2945# include "ev_linuxaio.c"
2946#endif
2947#if EV_USE_IOURING
2948# include "ev_iouring.c"
2949#endif
2489#if EV_USE_POLL 2950#if EV_USE_POLL
2490# include "ev_poll.c" 2951# include "ev_poll.c"
2491#endif 2952#endif
2492#if EV_USE_SELECT 2953#if EV_USE_SELECT
2493# include "ev_select.c" 2954# include "ev_select.c"
2494#endif 2955#endif
2495 2956
2496int ecb_cold 2957ecb_cold int
2497ev_version_major (void) EV_THROW 2958ev_version_major (void) EV_NOEXCEPT
2498{ 2959{
2499 return EV_VERSION_MAJOR; 2960 return EV_VERSION_MAJOR;
2500} 2961}
2501 2962
2502int ecb_cold 2963ecb_cold int
2503ev_version_minor (void) EV_THROW 2964ev_version_minor (void) EV_NOEXCEPT
2504{ 2965{
2505 return EV_VERSION_MINOR; 2966 return EV_VERSION_MINOR;
2506} 2967}
2507 2968
2508/* return true if we are running with elevated privileges and should ignore env variables */ 2969/* return true if we are running with elevated privileges and should ignore env variables */
2509int inline_size ecb_cold 2970inline_size ecb_cold int
2510enable_secure (void) 2971enable_secure (void)
2511{ 2972{
2512#ifdef _WIN32 2973#ifdef _WIN32
2513 return 0; 2974 return 0;
2514#else 2975#else
2515 return getuid () != geteuid () 2976 return getuid () != geteuid ()
2516 || getgid () != getegid (); 2977 || getgid () != getegid ();
2517#endif 2978#endif
2518} 2979}
2519 2980
2520unsigned int ecb_cold 2981ecb_cold
2982unsigned int
2521ev_supported_backends (void) EV_THROW 2983ev_supported_backends (void) EV_NOEXCEPT
2522{ 2984{
2523 unsigned int flags = 0; 2985 unsigned int flags = 0;
2524 2986
2525 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2987 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2526 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2988 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
2527 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2989 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2990 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
2991 if (EV_USE_IOURING ) flags |= EVBACKEND_IOURING;
2528 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2992 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
2529 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2993 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
2530 2994
2531 return flags; 2995 return flags;
2532} 2996}
2533 2997
2534unsigned int ecb_cold 2998ecb_cold
2999unsigned int
2535ev_recommended_backends (void) EV_THROW 3000ev_recommended_backends (void) EV_NOEXCEPT
2536{ 3001{
2537 unsigned int flags = ev_supported_backends (); 3002 unsigned int flags = ev_supported_backends ();
2538 3003
2539#ifndef __NetBSD__ 3004#ifndef __NetBSD__
2540 /* kqueue is borked on everything but netbsd apparently */ 3005 /* kqueue is borked on everything but netbsd apparently */
… …
2548#endif 3013#endif
2549#ifdef __FreeBSD__ 3014#ifdef __FreeBSD__
2550 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ 3015 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2551#endif 3016#endif
2552 3017
3018 /* TODO: linuxaio is very experimental */
3019#if !EV_RECOMMEND_LINUXAIO
3020 flags &= ~EVBACKEND_LINUXAIO;
3021#endif
3022 /* TODO: linuxaio is super experimental */
3023#if !EV_RECOMMEND_IOURING
3024 flags &= ~EVBACKEND_IOURING;
3025#endif
3026
2553 return flags; 3027 return flags;
2554} 3028}
2555 3029
2556unsigned int ecb_cold 3030ecb_cold
3031unsigned int
2557ev_embeddable_backends (void) EV_THROW 3032ev_embeddable_backends (void) EV_NOEXCEPT
2558{ 3033{
2559 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 3034 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2560 3035
2561 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 3036 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2562 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 3037 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2563 flags &= ~EVBACKEND_EPOLL; 3038 flags &= ~EVBACKEND_EPOLL;
2564 3039
3040 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
3041
3042 /* EVBACKEND_IOURING is practically embeddable, but the current implementation is not
3043 * because our backend_fd is the epoll fd we need as fallback.
3044 * if the kernel ever is fixed, this might change...
3045 */
3046
2565 return flags; 3047 return flags;
2566} 3048}
2567 3049
2568unsigned int 3050unsigned int
2569ev_backend (EV_P) EV_THROW 3051ev_backend (EV_P) EV_NOEXCEPT
2570{ 3052{
2571 return backend; 3053 return backend;
2572} 3054}
2573 3055
2574#if EV_FEATURE_API 3056#if EV_FEATURE_API
2575unsigned int 3057unsigned int
2576ev_iteration (EV_P) EV_THROW 3058ev_iteration (EV_P) EV_NOEXCEPT
2577{ 3059{
2578 return loop_count; 3060 return loop_count;
2579} 3061}
2580 3062
2581unsigned int 3063unsigned int
2582ev_depth (EV_P) EV_THROW 3064ev_depth (EV_P) EV_NOEXCEPT
2583{ 3065{
2584 return loop_depth; 3066 return loop_depth;
2585} 3067}
2586 3068
2587void 3069void
2588ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW 3070ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2589{ 3071{
2590 io_blocktime = interval; 3072 io_blocktime = interval;
2591} 3073}
2592 3074
2593void 3075void
2594ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW 3076ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2595{ 3077{
2596 timeout_blocktime = interval; 3078 timeout_blocktime = interval;
2597} 3079}
2598 3080
2599void 3081void
2600ev_set_userdata (EV_P_ void *data) EV_THROW 3082ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2601{ 3083{
2602 userdata = data; 3084 userdata = data;
2603} 3085}
2604 3086
2605void * 3087void *
2606ev_userdata (EV_P) EV_THROW 3088ev_userdata (EV_P) EV_NOEXCEPT
2607{ 3089{
2608 return userdata; 3090 return userdata;
2609} 3091}
2610 3092
2611void 3093void
2612ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW 3094ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
2613{ 3095{
2614 invoke_cb = invoke_pending_cb; 3096 invoke_cb = invoke_pending_cb;
2615} 3097}
2616 3098
2617void 3099void
2618ev_set_loop_release_cb (EV_P_ ev_loop_callback EV_THROW release, ev_loop_callback EV_THROW acquire) EV_THROW 3100ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
2619{ 3101{
2620 release_cb = release; 3102 release_cb = release;
2621 acquire_cb = acquire; 3103 acquire_cb = acquire;
2622} 3104}
2623#endif 3105#endif
2624 3106
2625/* initialise a loop structure, must be zero-initialised */ 3107/* initialise a loop structure, must be zero-initialised */
2626static void noinline ecb_cold 3108ecb_noinline ecb_cold
3109static void
2627loop_init (EV_P_ unsigned int flags) EV_THROW 3110loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
2628{ 3111{
2629 if (!backend) 3112 if (!backend)
2630 { 3113 {
2631 origflags = flags; 3114 origflags = flags;
2632 3115
… …
2685 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3168 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2686#endif 3169#endif
2687#if EV_USE_SIGNALFD 3170#if EV_USE_SIGNALFD
2688 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 3171 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2689#endif 3172#endif
3173#if EV_USE_TIMERFD
3174 timerfd = flags & EVFLAG_NOTIMERFD ? -1 : -2;
3175#endif
2690 3176
2691 if (!(flags & EVBACKEND_MASK)) 3177 if (!(flags & EVBACKEND_MASK))
2692 flags |= ev_recommended_backends (); 3178 flags |= ev_recommended_backends ();
2693 3179
2694#if EV_USE_IOCP 3180#if EV_USE_IOCP
2695 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 3181 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2696#endif 3182#endif
2697#if EV_USE_PORT 3183#if EV_USE_PORT
2698 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3184 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
2699#endif 3185#endif
2700#if EV_USE_KQUEUE 3186#if EV_USE_KQUEUE
2701 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 3187 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
3188#endif
3189#if EV_USE_IOURING
3190 if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
3191#endif
3192#if EV_USE_LINUXAIO
3193 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
2702#endif 3194#endif
2703#if EV_USE_EPOLL 3195#if EV_USE_EPOLL
2704 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3196 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
2705#endif 3197#endif
2706#if EV_USE_POLL 3198#if EV_USE_POLL
2707 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3199 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
2708#endif 3200#endif
2709#if EV_USE_SELECT 3201#if EV_USE_SELECT
2710 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3202 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
2711#endif 3203#endif
2712 3204
2713 ev_prepare_init (&pending_w, pendingcb); 3205 ev_prepare_init (&pending_w, pendingcb);
2714 3206
2715#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3207#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
2718#endif 3210#endif
2719 } 3211 }
2720} 3212}
2721 3213
2722/* free up a loop structure */ 3214/* free up a loop structure */
2723void ecb_cold 3215ecb_cold
3216void
2724ev_loop_destroy (EV_P) 3217ev_loop_destroy (EV_P)
2725{ 3218{
2726 int i; 3219 int i;
2727 3220
2728#if EV_MULTIPLICITY 3221#if EV_MULTIPLICITY
… …
2731 return; 3224 return;
2732#endif 3225#endif
2733 3226
2734#if EV_CLEANUP_ENABLE 3227#if EV_CLEANUP_ENABLE
2735 /* queue cleanup watchers (and execute them) */ 3228 /* queue cleanup watchers (and execute them) */
2736 if (expect_false (cleanupcnt)) 3229 if (ecb_expect_false (cleanupcnt))
2737 { 3230 {
2738 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); 3231 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2739 EV_INVOKE_PENDING; 3232 EV_INVOKE_PENDING;
2740 } 3233 }
2741#endif 3234#endif
… …
2760#if EV_USE_SIGNALFD 3253#if EV_USE_SIGNALFD
2761 if (ev_is_active (&sigfd_w)) 3254 if (ev_is_active (&sigfd_w))
2762 close (sigfd); 3255 close (sigfd);
2763#endif 3256#endif
2764 3257
3258#if EV_USE_TIMERFD
3259 if (ev_is_active (&timerfd_w))
3260 close (timerfd);
3261#endif
3262
2765#if EV_USE_INOTIFY 3263#if EV_USE_INOTIFY
2766 if (fs_fd >= 0) 3264 if (fs_fd >= 0)
2767 close (fs_fd); 3265 close (fs_fd);
2768#endif 3266#endif
2769 3267
2770 if (backend_fd >= 0) 3268 if (backend_fd >= 0)
2771 close (backend_fd); 3269 close (backend_fd);
2772 3270
2773#if EV_USE_IOCP 3271#if EV_USE_IOCP
2774 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3272 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2775#endif 3273#endif
2776#if EV_USE_PORT 3274#if EV_USE_PORT
2777 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3275 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
2778#endif 3276#endif
2779#if EV_USE_KQUEUE 3277#if EV_USE_KQUEUE
2780 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3278 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3279#endif
3280#if EV_USE_IOURING
3281 if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
3282#endif
3283#if EV_USE_LINUXAIO
3284 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
2781#endif 3285#endif
2782#if EV_USE_EPOLL 3286#if EV_USE_EPOLL
2783 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3287 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
2784#endif 3288#endif
2785#if EV_USE_POLL 3289#if EV_USE_POLL
2786 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3290 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
2787#endif 3291#endif
2788#if EV_USE_SELECT 3292#if EV_USE_SELECT
2789 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3293 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
2790#endif 3294#endif
2791 3295
2792 for (i = NUMPRI; i--; ) 3296 for (i = NUMPRI; i--; )
2793 { 3297 {
2794 array_free (pending, [i]); 3298 array_free (pending, [i]);
… …
2836 3340
2837inline_size void 3341inline_size void
2838loop_fork (EV_P) 3342loop_fork (EV_P)
2839{ 3343{
2840#if EV_USE_PORT 3344#if EV_USE_PORT
2841 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3345 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
2842#endif 3346#endif
2843#if EV_USE_KQUEUE 3347#if EV_USE_KQUEUE
2844 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3348 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3349#endif
3350#if EV_USE_IOURING
3351 if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
3352#endif
3353#if EV_USE_LINUXAIO
3354 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
2845#endif 3355#endif
2846#if EV_USE_EPOLL 3356#if EV_USE_EPOLL
2847 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3357 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
2848#endif 3358#endif
2849#if EV_USE_INOTIFY 3359#if EV_USE_INOTIFY
2850 infy_fork (EV_A); 3360 infy_fork (EV_A);
2851#endif 3361#endif
2852 3362
3363 if (postfork != 2)
3364 {
3365 #if EV_USE_SIGNALFD
3366 /* surprisingly, nothing needs to be done for signalfd, accoridng to docs, it does the right thing on fork */
3367 #endif
3368
3369 #if EV_USE_TIMERFD
3370 if (ev_is_active (&timerfd_w))
3371 {
3372 ev_ref (EV_A);
3373 ev_io_stop (EV_A_ &timerfd_w);
3374
3375 close (timerfd);
3376 timerfd = -2;
3377
3378 evtimerfd_init (EV_A);
3379 /* reschedule periodics, in case we missed something */
3380 ev_feed_event (EV_A_ &timerfd_w, EV_CUSTOM);
3381 }
3382 #endif
3383
2853#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3384 #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2854 if (ev_is_active (&pipe_w)) 3385 if (ev_is_active (&pipe_w))
2855 { 3386 {
2856 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 3387 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2857 3388
2858 ev_ref (EV_A); 3389 ev_ref (EV_A);
2859 ev_io_stop (EV_A_ &pipe_w); 3390 ev_io_stop (EV_A_ &pipe_w);
2860 3391
2861 if (evpipe [0] >= 0) 3392 if (evpipe [0] >= 0)
2862 EV_WIN32_CLOSE_FD (evpipe [0]); 3393 EV_WIN32_CLOSE_FD (evpipe [0]);
2863 3394
2864 evpipe_init (EV_A); 3395 evpipe_init (EV_A);
2865 /* iterate over everything, in case we missed something before */ 3396 /* iterate over everything, in case we missed something before */
2866 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3397 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3398 }
3399 #endif
2867 } 3400 }
2868#endif
2869 3401
2870 postfork = 0; 3402 postfork = 0;
2871} 3403}
2872 3404
2873#if EV_MULTIPLICITY 3405#if EV_MULTIPLICITY
2874 3406
3407ecb_cold
2875struct ev_loop * ecb_cold 3408struct ev_loop *
2876ev_loop_new (unsigned int flags) EV_THROW 3409ev_loop_new (unsigned int flags) EV_NOEXCEPT
2877{ 3410{
2878 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3411 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2879 3412
2880 memset (EV_A, 0, sizeof (struct ev_loop)); 3413 memset (EV_A, 0, sizeof (struct ev_loop));
2881 loop_init (EV_A_ flags); 3414 loop_init (EV_A_ flags);
… …
2888} 3421}
2889 3422
2890#endif /* multiplicity */ 3423#endif /* multiplicity */
2891 3424
2892#if EV_VERIFY 3425#if EV_VERIFY
2893static void noinline ecb_cold 3426ecb_noinline ecb_cold
3427static void
2894verify_watcher (EV_P_ W w) 3428verify_watcher (EV_P_ W w)
2895{ 3429{
2896 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3430 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2897 3431
2898 if (w->pending) 3432 if (w->pending)
2899 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3433 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2900} 3434}
2901 3435
2902static void noinline ecb_cold 3436ecb_noinline ecb_cold
3437static void
2903verify_heap (EV_P_ ANHE *heap, int N) 3438verify_heap (EV_P_ ANHE *heap, int N)
2904{ 3439{
2905 int i; 3440 int i;
2906 3441
2907 for (i = HEAP0; i < N + HEAP0; ++i) 3442 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2912 3447
2913 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3448 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2914 } 3449 }
2915} 3450}
2916 3451
2917static void noinline ecb_cold 3452ecb_noinline ecb_cold
3453static void
2918array_verify (EV_P_ W *ws, int cnt) 3454array_verify (EV_P_ W *ws, int cnt)
2919{ 3455{
2920 while (cnt--) 3456 while (cnt--)
2921 { 3457 {
2922 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3458 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2925} 3461}
2926#endif 3462#endif
2927 3463
2928#if EV_FEATURE_API 3464#if EV_FEATURE_API
2929void ecb_cold 3465void ecb_cold
2930ev_verify (EV_P) EV_THROW 3466ev_verify (EV_P) EV_NOEXCEPT
2931{ 3467{
2932#if EV_VERIFY 3468#if EV_VERIFY
2933 int i; 3469 int i;
2934 WL w, w2; 3470 WL w, w2;
2935 3471
… …
3011#endif 3547#endif
3012} 3548}
3013#endif 3549#endif
3014 3550
3015#if EV_MULTIPLICITY 3551#if EV_MULTIPLICITY
3552ecb_cold
3016struct ev_loop * ecb_cold 3553struct ev_loop *
3017#else 3554#else
3018int 3555int
3019#endif 3556#endif
3020ev_default_loop (unsigned int flags) EV_THROW 3557ev_default_loop (unsigned int flags) EV_NOEXCEPT
3021{ 3558{
3022 if (!ev_default_loop_ptr) 3559 if (!ev_default_loop_ptr)
3023 { 3560 {
3024#if EV_MULTIPLICITY 3561#if EV_MULTIPLICITY
3025 EV_P = ev_default_loop_ptr = &default_loop_struct; 3562 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
3044 3581
3045 return ev_default_loop_ptr; 3582 return ev_default_loop_ptr;
3046} 3583}
3047 3584
3048void 3585void
3049ev_loop_fork (EV_P) EV_THROW 3586ev_loop_fork (EV_P) EV_NOEXCEPT
3050{ 3587{
3051 postfork = 1; 3588 postfork = 1;
3052} 3589}
3053 3590
3054/*****************************************************************************/ 3591/*****************************************************************************/
… …
3058{ 3595{
3059 EV_CB_INVOKE ((W)w, revents); 3596 EV_CB_INVOKE ((W)w, revents);
3060} 3597}
3061 3598
3062unsigned int 3599unsigned int
3063ev_pending_count (EV_P) EV_THROW 3600ev_pending_count (EV_P) EV_NOEXCEPT
3064{ 3601{
3065 int pri; 3602 int pri;
3066 unsigned int count = 0; 3603 unsigned int count = 0;
3067 3604
3068 for (pri = NUMPRI; pri--; ) 3605 for (pri = NUMPRI; pri--; )
3069 count += pendingcnt [pri]; 3606 count += pendingcnt [pri];
3070 3607
3071 return count; 3608 return count;
3072} 3609}
3073 3610
3074void noinline 3611ecb_noinline
3612void
3075ev_invoke_pending (EV_P) 3613ev_invoke_pending (EV_P)
3076{ 3614{
3077 pendingpri = NUMPRI; 3615 pendingpri = NUMPRI;
3078 3616
3079 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */ 3617 do
3080 { 3618 {
3081 --pendingpri; 3619 --pendingpri;
3082 3620
3621 /* pendingpri possibly gets modified in the inner loop */
3083 while (pendingcnt [pendingpri]) 3622 while (pendingcnt [pendingpri])
3084 { 3623 {
3085 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri]; 3624 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
3086 3625
3087 p->w->pending = 0; 3626 p->w->pending = 0;
3088 EV_CB_INVOKE (p->w, p->events); 3627 EV_CB_INVOKE (p->w, p->events);
3089 EV_FREQUENT_CHECK; 3628 EV_FREQUENT_CHECK;
3090 } 3629 }
3091 } 3630 }
3631 while (pendingpri);
3092} 3632}
3093 3633
3094#if EV_IDLE_ENABLE 3634#if EV_IDLE_ENABLE
3095/* make idle watchers pending. this handles the "call-idle */ 3635/* make idle watchers pending. this handles the "call-idle */
3096/* only when higher priorities are idle" logic */ 3636/* only when higher priorities are idle" logic */
3097inline_size void 3637inline_size void
3098idle_reify (EV_P) 3638idle_reify (EV_P)
3099{ 3639{
3100 if (expect_false (idleall)) 3640 if (ecb_expect_false (idleall))
3101 { 3641 {
3102 int pri; 3642 int pri;
3103 3643
3104 for (pri = NUMPRI; pri--; ) 3644 for (pri = NUMPRI; pri--; )
3105 { 3645 {
… …
3135 { 3675 {
3136 ev_at (w) += w->repeat; 3676 ev_at (w) += w->repeat;
3137 if (ev_at (w) < mn_now) 3677 if (ev_at (w) < mn_now)
3138 ev_at (w) = mn_now; 3678 ev_at (w) = mn_now;
3139 3679
3140 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 3680 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > EV_TS_CONST (0.)));
3141 3681
3142 ANHE_at_cache (timers [HEAP0]); 3682 ANHE_at_cache (timers [HEAP0]);
3143 downheap (timers, timercnt, HEAP0); 3683 downheap (timers, timercnt, HEAP0);
3144 } 3684 }
3145 else 3685 else
… …
3154 } 3694 }
3155} 3695}
3156 3696
3157#if EV_PERIODIC_ENABLE 3697#if EV_PERIODIC_ENABLE
3158 3698
3159static void noinline 3699ecb_noinline
3700static void
3160periodic_recalc (EV_P_ ev_periodic *w) 3701periodic_recalc (EV_P_ ev_periodic *w)
3161{ 3702{
3162 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3703 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3163 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); 3704 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3164 3705
… …
3166 while (at <= ev_rt_now) 3707 while (at <= ev_rt_now)
3167 { 3708 {
3168 ev_tstamp nat = at + w->interval; 3709 ev_tstamp nat = at + w->interval;
3169 3710
3170 /* when resolution fails us, we use ev_rt_now */ 3711 /* when resolution fails us, we use ev_rt_now */
3171 if (expect_false (nat == at)) 3712 if (ecb_expect_false (nat == at))
3172 { 3713 {
3173 at = ev_rt_now; 3714 at = ev_rt_now;
3174 break; 3715 break;
3175 } 3716 }
3176 3717
… …
3222 } 3763 }
3223} 3764}
3224 3765
3225/* simply recalculate all periodics */ 3766/* simply recalculate all periodics */
3226/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3767/* TODO: maybe ensure that at least one event happens when jumping forward? */
3227static void noinline ecb_cold 3768ecb_noinline ecb_cold
3769static void
3228periodics_reschedule (EV_P) 3770periodics_reschedule (EV_P)
3229{ 3771{
3230 int i; 3772 int i;
3231 3773
3232 /* adjust periodics after time jump */ 3774 /* adjust periodics after time jump */
… …
3245 reheap (periodics, periodiccnt); 3787 reheap (periodics, periodiccnt);
3246} 3788}
3247#endif 3789#endif
3248 3790
3249/* adjust all timers by a given offset */ 3791/* adjust all timers by a given offset */
3250static void noinline ecb_cold 3792ecb_noinline ecb_cold
3793static void
3251timers_reschedule (EV_P_ ev_tstamp adjust) 3794timers_reschedule (EV_P_ ev_tstamp adjust)
3252{ 3795{
3253 int i; 3796 int i;
3254 3797
3255 for (i = 0; i < timercnt; ++i) 3798 for (i = 0; i < timercnt; ++i)
… …
3264/* also detect if there was a timejump, and act accordingly */ 3807/* also detect if there was a timejump, and act accordingly */
3265inline_speed void 3808inline_speed void
3266time_update (EV_P_ ev_tstamp max_block) 3809time_update (EV_P_ ev_tstamp max_block)
3267{ 3810{
3268#if EV_USE_MONOTONIC 3811#if EV_USE_MONOTONIC
3269 if (expect_true (have_monotonic)) 3812 if (ecb_expect_true (have_monotonic))
3270 { 3813 {
3271 int i; 3814 int i;
3272 ev_tstamp odiff = rtmn_diff; 3815 ev_tstamp odiff = rtmn_diff;
3273 3816
3274 mn_now = get_clock (); 3817 mn_now = get_clock ();
3275 3818
3276 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3819 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
3277 /* interpolate in the meantime */ 3820 /* interpolate in the meantime */
3278 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3821 if (ecb_expect_true (mn_now - now_floor < EV_TS_CONST (MIN_TIMEJUMP * .5)))
3279 { 3822 {
3280 ev_rt_now = rtmn_diff + mn_now; 3823 ev_rt_now = rtmn_diff + mn_now;
3281 return; 3824 return;
3282 } 3825 }
3283 3826
… …
3297 ev_tstamp diff; 3840 ev_tstamp diff;
3298 rtmn_diff = ev_rt_now - mn_now; 3841 rtmn_diff = ev_rt_now - mn_now;
3299 3842
3300 diff = odiff - rtmn_diff; 3843 diff = odiff - rtmn_diff;
3301 3844
3302 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP)) 3845 if (ecb_expect_true ((diff < EV_TS_CONST (0.) ? -diff : diff) < EV_TS_CONST (MIN_TIMEJUMP)))
3303 return; /* all is well */ 3846 return; /* all is well */
3304 3847
3305 ev_rt_now = ev_time (); 3848 ev_rt_now = ev_time ();
3306 mn_now = get_clock (); 3849 mn_now = get_clock ();
3307 now_floor = mn_now; 3850 now_floor = mn_now;
… …
3316 else 3859 else
3317#endif 3860#endif
3318 { 3861 {
3319 ev_rt_now = ev_time (); 3862 ev_rt_now = ev_time ();
3320 3863
3321 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 3864 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + EV_TS_CONST (MIN_TIMEJUMP)))
3322 { 3865 {
3323 /* adjust timers. this is easy, as the offset is the same for all of them */ 3866 /* adjust timers. this is easy, as the offset is the same for all of them */
3324 timers_reschedule (EV_A_ ev_rt_now - mn_now); 3867 timers_reschedule (EV_A_ ev_rt_now - mn_now);
3325#if EV_PERIODIC_ENABLE 3868#if EV_PERIODIC_ENABLE
3326 periodics_reschedule (EV_A); 3869 periodics_reschedule (EV_A);
… …
3349#if EV_VERIFY >= 2 3892#if EV_VERIFY >= 2
3350 ev_verify (EV_A); 3893 ev_verify (EV_A);
3351#endif 3894#endif
3352 3895
3353#ifndef _WIN32 3896#ifndef _WIN32
3354 if (expect_false (curpid)) /* penalise the forking check even more */ 3897 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
3355 if (expect_false (getpid () != curpid)) 3898 if (ecb_expect_false (getpid () != curpid))
3356 { 3899 {
3357 curpid = getpid (); 3900 curpid = getpid ();
3358 postfork = 1; 3901 postfork = 1;
3359 } 3902 }
3360#endif 3903#endif
3361 3904
3362#if EV_FORK_ENABLE 3905#if EV_FORK_ENABLE
3363 /* we might have forked, so queue fork handlers */ 3906 /* we might have forked, so queue fork handlers */
3364 if (expect_false (postfork)) 3907 if (ecb_expect_false (postfork))
3365 if (forkcnt) 3908 if (forkcnt)
3366 { 3909 {
3367 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3910 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
3368 EV_INVOKE_PENDING; 3911 EV_INVOKE_PENDING;
3369 } 3912 }
3370#endif 3913#endif
3371 3914
3372#if EV_PREPARE_ENABLE 3915#if EV_PREPARE_ENABLE
3373 /* queue prepare watchers (and execute them) */ 3916 /* queue prepare watchers (and execute them) */
3374 if (expect_false (preparecnt)) 3917 if (ecb_expect_false (preparecnt))
3375 { 3918 {
3376 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3919 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
3377 EV_INVOKE_PENDING; 3920 EV_INVOKE_PENDING;
3378 } 3921 }
3379#endif 3922#endif
3380 3923
3381 if (expect_false (loop_done)) 3924 if (ecb_expect_false (loop_done))
3382 break; 3925 break;
3383 3926
3384 /* we might have forked, so reify kernel state if necessary */ 3927 /* we might have forked, so reify kernel state if necessary */
3385 if (expect_false (postfork)) 3928 if (ecb_expect_false (postfork))
3386 loop_fork (EV_A); 3929 loop_fork (EV_A);
3387 3930
3388 /* update fd-related kernel structures */ 3931 /* update fd-related kernel structures */
3389 fd_reify (EV_A); 3932 fd_reify (EV_A);
3390 3933
… …
3395 3938
3396 /* remember old timestamp for io_blocktime calculation */ 3939 /* remember old timestamp for io_blocktime calculation */
3397 ev_tstamp prev_mn_now = mn_now; 3940 ev_tstamp prev_mn_now = mn_now;
3398 3941
3399 /* update time to cancel out callback processing overhead */ 3942 /* update time to cancel out callback processing overhead */
3400 time_update (EV_A_ 1e100); 3943 time_update (EV_A_ EV_TS_CONST (EV_TSTAMP_HUGE));
3401 3944
3402 /* from now on, we want a pipe-wake-up */ 3945 /* from now on, we want a pipe-wake-up */
3403 pipe_write_wanted = 1; 3946 pipe_write_wanted = 1;
3404 3947
3405 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */ 3948 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3406 3949
3407 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) 3950 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
3408 { 3951 {
3409 waittime = MAX_BLOCKTIME; 3952 waittime = EV_TS_CONST (MAX_BLOCKTIME);
3410 3953
3411 if (timercnt) 3954 if (timercnt)
3412 { 3955 {
3413 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now; 3956 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
3414 if (waittime > to) waittime = to; 3957 if (waittime > to) waittime = to;
… …
3421 if (waittime > to) waittime = to; 3964 if (waittime > to) waittime = to;
3422 } 3965 }
3423#endif 3966#endif
3424 3967
3425 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3968 /* don't let timeouts decrease the waittime below timeout_blocktime */
3426 if (expect_false (waittime < timeout_blocktime)) 3969 if (ecb_expect_false (waittime < timeout_blocktime))
3427 waittime = timeout_blocktime; 3970 waittime = timeout_blocktime;
3428 3971
3429 /* at this point, we NEED to wait, so we have to ensure */ 3972 /* now there are two more special cases left, either we have
3430 /* to pass a minimum nonzero value to the backend */ 3973 * already-expired timers, so we should not sleep, or we have timers
3974 * that expire very soon, in which case we need to wait for a minimum
3975 * amount of time for some event loop backends.
3976 */
3431 if (expect_false (waittime < backend_mintime)) 3977 if (ecb_expect_false (waittime < backend_mintime))
3978 waittime = waittime <= EV_TS_CONST (0.)
3979 ? EV_TS_CONST (0.)
3432 waittime = backend_mintime; 3980 : backend_mintime;
3433 3981
3434 /* extra check because io_blocktime is commonly 0 */ 3982 /* extra check because io_blocktime is commonly 0 */
3435 if (expect_false (io_blocktime)) 3983 if (ecb_expect_false (io_blocktime))
3436 { 3984 {
3437 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3985 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3438 3986
3439 if (sleeptime > waittime - backend_mintime) 3987 if (sleeptime > waittime - backend_mintime)
3440 sleeptime = waittime - backend_mintime; 3988 sleeptime = waittime - backend_mintime;
3441 3989
3442 if (expect_true (sleeptime > 0.)) 3990 if (ecb_expect_true (sleeptime > EV_TS_CONST (0.)))
3443 { 3991 {
3444 ev_sleep (sleeptime); 3992 ev_sleep (sleeptime);
3445 waittime -= sleeptime; 3993 waittime -= sleeptime;
3446 } 3994 }
3447 } 3995 }
… …
3461 { 4009 {
3462 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 4010 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3463 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 4011 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3464 } 4012 }
3465 4013
3466
3467 /* update ev_rt_now, do magic */ 4014 /* update ev_rt_now, do magic */
3468 time_update (EV_A_ waittime + sleeptime); 4015 time_update (EV_A_ waittime + sleeptime);
3469 } 4016 }
3470 4017
3471 /* queue pending timers and reschedule them */ 4018 /* queue pending timers and reschedule them */
… …
3479 idle_reify (EV_A); 4026 idle_reify (EV_A);
3480#endif 4027#endif
3481 4028
3482#if EV_CHECK_ENABLE 4029#if EV_CHECK_ENABLE
3483 /* queue check watchers, to be executed first */ 4030 /* queue check watchers, to be executed first */
3484 if (expect_false (checkcnt)) 4031 if (ecb_expect_false (checkcnt))
3485 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 4032 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3486#endif 4033#endif
3487 4034
3488 EV_INVOKE_PENDING; 4035 EV_INVOKE_PENDING;
3489 } 4036 }
3490 while (expect_true ( 4037 while (ecb_expect_true (
3491 activecnt 4038 activecnt
3492 && !loop_done 4039 && !loop_done
3493 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) 4040 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
3494 )); 4041 ));
3495 4042
… …
3502 4049
3503 return activecnt; 4050 return activecnt;
3504} 4051}
3505 4052
3506void 4053void
3507ev_break (EV_P_ int how) EV_THROW 4054ev_break (EV_P_ int how) EV_NOEXCEPT
3508{ 4055{
3509 loop_done = how; 4056 loop_done = how;
3510} 4057}
3511 4058
3512void 4059void
3513ev_ref (EV_P) EV_THROW 4060ev_ref (EV_P) EV_NOEXCEPT
3514{ 4061{
3515 ++activecnt; 4062 ++activecnt;
3516} 4063}
3517 4064
3518void 4065void
3519ev_unref (EV_P) EV_THROW 4066ev_unref (EV_P) EV_NOEXCEPT
3520{ 4067{
3521 --activecnt; 4068 --activecnt;
3522} 4069}
3523 4070
3524void 4071void
3525ev_now_update (EV_P) EV_THROW 4072ev_now_update (EV_P) EV_NOEXCEPT
3526{ 4073{
3527 time_update (EV_A_ 1e100); 4074 time_update (EV_A_ EV_TSTAMP_HUGE);
3528} 4075}
3529 4076
3530void 4077void
3531ev_suspend (EV_P) EV_THROW 4078ev_suspend (EV_P) EV_NOEXCEPT
3532{ 4079{
3533 ev_now_update (EV_A); 4080 ev_now_update (EV_A);
3534} 4081}
3535 4082
3536void 4083void
3537ev_resume (EV_P) EV_THROW 4084ev_resume (EV_P) EV_NOEXCEPT
3538{ 4085{
3539 ev_tstamp mn_prev = mn_now; 4086 ev_tstamp mn_prev = mn_now;
3540 4087
3541 ev_now_update (EV_A); 4088 ev_now_update (EV_A);
3542 timers_reschedule (EV_A_ mn_now - mn_prev); 4089 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
3559inline_size void 4106inline_size void
3560wlist_del (WL *head, WL elem) 4107wlist_del (WL *head, WL elem)
3561{ 4108{
3562 while (*head) 4109 while (*head)
3563 { 4110 {
3564 if (expect_true (*head == elem)) 4111 if (ecb_expect_true (*head == elem))
3565 { 4112 {
3566 *head = elem->next; 4113 *head = elem->next;
3567 break; 4114 break;
3568 } 4115 }
3569 4116
… …
3581 w->pending = 0; 4128 w->pending = 0;
3582 } 4129 }
3583} 4130}
3584 4131
3585int 4132int
3586ev_clear_pending (EV_P_ void *w) EV_THROW 4133ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
3587{ 4134{
3588 W w_ = (W)w; 4135 W w_ = (W)w;
3589 int pending = w_->pending; 4136 int pending = w_->pending;
3590 4137
3591 if (expect_true (pending)) 4138 if (ecb_expect_true (pending))
3592 { 4139 {
3593 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4140 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3594 p->w = (W)&pending_w; 4141 p->w = (W)&pending_w;
3595 w_->pending = 0; 4142 w_->pending = 0;
3596 return p->events; 4143 return p->events;
… …
3623 w->active = 0; 4170 w->active = 0;
3624} 4171}
3625 4172
3626/*****************************************************************************/ 4173/*****************************************************************************/
3627 4174
3628void noinline 4175ecb_noinline
4176void
3629ev_io_start (EV_P_ ev_io *w) EV_THROW 4177ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
3630{ 4178{
3631 int fd = w->fd; 4179 int fd = w->fd;
3632 4180
3633 if (expect_false (ev_is_active (w))) 4181 if (ecb_expect_false (ev_is_active (w)))
3634 return; 4182 return;
3635 4183
3636 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4184 assert (("libev: ev_io_start called with negative fd", fd >= 0));
3637 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 4185 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
3638 4186
4187#if EV_VERIFY >= 2
4188 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4189#endif
3639 EV_FREQUENT_CHECK; 4190 EV_FREQUENT_CHECK;
3640 4191
3641 ev_start (EV_A_ (W)w, 1); 4192 ev_start (EV_A_ (W)w, 1);
3642 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4193 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
3643 wlist_add (&anfds[fd].head, (WL)w); 4194 wlist_add (&anfds[fd].head, (WL)w);
3644 4195
3645 /* common bug, apparently */ 4196 /* common bug, apparently */
3646 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w)); 4197 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3647 4198
… …
3649 w->events &= ~EV__IOFDSET; 4200 w->events &= ~EV__IOFDSET;
3650 4201
3651 EV_FREQUENT_CHECK; 4202 EV_FREQUENT_CHECK;
3652} 4203}
3653 4204
3654void noinline 4205ecb_noinline
4206void
3655ev_io_stop (EV_P_ ev_io *w) EV_THROW 4207ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
3656{ 4208{
3657 clear_pending (EV_A_ (W)w); 4209 clear_pending (EV_A_ (W)w);
3658 if (expect_false (!ev_is_active (w))) 4210 if (ecb_expect_false (!ev_is_active (w)))
3659 return; 4211 return;
3660 4212
3661 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4213 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
3662 4214
4215#if EV_VERIFY >= 2
4216 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4217#endif
3663 EV_FREQUENT_CHECK; 4218 EV_FREQUENT_CHECK;
3664 4219
3665 wlist_del (&anfds[w->fd].head, (WL)w); 4220 wlist_del (&anfds[w->fd].head, (WL)w);
3666 ev_stop (EV_A_ (W)w); 4221 ev_stop (EV_A_ (W)w);
3667 4222
3668 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 4223 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3669 4224
3670 EV_FREQUENT_CHECK; 4225 EV_FREQUENT_CHECK;
3671} 4226}
3672 4227
3673void noinline 4228ecb_noinline
4229void
3674ev_timer_start (EV_P_ ev_timer *w) EV_THROW 4230ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
3675{ 4231{
3676 if (expect_false (ev_is_active (w))) 4232 if (ecb_expect_false (ev_is_active (w)))
3677 return; 4233 return;
3678 4234
3679 ev_at (w) += mn_now; 4235 ev_at (w) += mn_now;
3680 4236
3681 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4237 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
3682 4238
3683 EV_FREQUENT_CHECK; 4239 EV_FREQUENT_CHECK;
3684 4240
3685 ++timercnt; 4241 ++timercnt;
3686 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4242 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
3687 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4243 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
3688 ANHE_w (timers [ev_active (w)]) = (WT)w; 4244 ANHE_w (timers [ev_active (w)]) = (WT)w;
3689 ANHE_at_cache (timers [ev_active (w)]); 4245 ANHE_at_cache (timers [ev_active (w)]);
3690 upheap (timers, ev_active (w)); 4246 upheap (timers, ev_active (w));
3691 4247
3692 EV_FREQUENT_CHECK; 4248 EV_FREQUENT_CHECK;
3693 4249
3694 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4250 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
3695} 4251}
3696 4252
3697void noinline 4253ecb_noinline
4254void
3698ev_timer_stop (EV_P_ ev_timer *w) EV_THROW 4255ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
3699{ 4256{
3700 clear_pending (EV_A_ (W)w); 4257 clear_pending (EV_A_ (W)w);
3701 if (expect_false (!ev_is_active (w))) 4258 if (ecb_expect_false (!ev_is_active (w)))
3702 return; 4259 return;
3703 4260
3704 EV_FREQUENT_CHECK; 4261 EV_FREQUENT_CHECK;
3705 4262
3706 { 4263 {
… …
3708 4265
3709 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4266 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
3710 4267
3711 --timercnt; 4268 --timercnt;
3712 4269
3713 if (expect_true (active < timercnt + HEAP0)) 4270 if (ecb_expect_true (active < timercnt + HEAP0))
3714 { 4271 {
3715 timers [active] = timers [timercnt + HEAP0]; 4272 timers [active] = timers [timercnt + HEAP0];
3716 adjustheap (timers, timercnt, active); 4273 adjustheap (timers, timercnt, active);
3717 } 4274 }
3718 } 4275 }
… …
3722 ev_stop (EV_A_ (W)w); 4279 ev_stop (EV_A_ (W)w);
3723 4280
3724 EV_FREQUENT_CHECK; 4281 EV_FREQUENT_CHECK;
3725} 4282}
3726 4283
3727void noinline 4284ecb_noinline
4285void
3728ev_timer_again (EV_P_ ev_timer *w) EV_THROW 4286ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
3729{ 4287{
3730 EV_FREQUENT_CHECK; 4288 EV_FREQUENT_CHECK;
3731 4289
3732 clear_pending (EV_A_ (W)w); 4290 clear_pending (EV_A_ (W)w);
3733 4291
… …
3750 4308
3751 EV_FREQUENT_CHECK; 4309 EV_FREQUENT_CHECK;
3752} 4310}
3753 4311
3754ev_tstamp 4312ev_tstamp
3755ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW 4313ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
3756{ 4314{
3757 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4315 return ev_at (w) - (ev_is_active (w) ? mn_now : EV_TS_CONST (0.));
3758} 4316}
3759 4317
3760#if EV_PERIODIC_ENABLE 4318#if EV_PERIODIC_ENABLE
3761void noinline 4319ecb_noinline
4320void
3762ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW 4321ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
3763{ 4322{
3764 if (expect_false (ev_is_active (w))) 4323 if (ecb_expect_false (ev_is_active (w)))
3765 return; 4324 return;
4325
4326#if EV_USE_TIMERFD
4327 if (timerfd == -2)
4328 evtimerfd_init (EV_A);
4329#endif
3766 4330
3767 if (w->reschedule_cb) 4331 if (w->reschedule_cb)
3768 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4332 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
3769 else if (w->interval) 4333 else if (w->interval)
3770 { 4334 {
… …
3776 4340
3777 EV_FREQUENT_CHECK; 4341 EV_FREQUENT_CHECK;
3778 4342
3779 ++periodiccnt; 4343 ++periodiccnt;
3780 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4344 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
3781 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4345 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
3782 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4346 ANHE_w (periodics [ev_active (w)]) = (WT)w;
3783 ANHE_at_cache (periodics [ev_active (w)]); 4347 ANHE_at_cache (periodics [ev_active (w)]);
3784 upheap (periodics, ev_active (w)); 4348 upheap (periodics, ev_active (w));
3785 4349
3786 EV_FREQUENT_CHECK; 4350 EV_FREQUENT_CHECK;
3787 4351
3788 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4352 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
3789} 4353}
3790 4354
3791void noinline 4355ecb_noinline
4356void
3792ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW 4357ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
3793{ 4358{
3794 clear_pending (EV_A_ (W)w); 4359 clear_pending (EV_A_ (W)w);
3795 if (expect_false (!ev_is_active (w))) 4360 if (ecb_expect_false (!ev_is_active (w)))
3796 return; 4361 return;
3797 4362
3798 EV_FREQUENT_CHECK; 4363 EV_FREQUENT_CHECK;
3799 4364
3800 { 4365 {
… …
3802 4367
3803 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4368 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
3804 4369
3805 --periodiccnt; 4370 --periodiccnt;
3806 4371
3807 if (expect_true (active < periodiccnt + HEAP0)) 4372 if (ecb_expect_true (active < periodiccnt + HEAP0))
3808 { 4373 {
3809 periodics [active] = periodics [periodiccnt + HEAP0]; 4374 periodics [active] = periodics [periodiccnt + HEAP0];
3810 adjustheap (periodics, periodiccnt, active); 4375 adjustheap (periodics, periodiccnt, active);
3811 } 4376 }
3812 } 4377 }
… …
3814 ev_stop (EV_A_ (W)w); 4379 ev_stop (EV_A_ (W)w);
3815 4380
3816 EV_FREQUENT_CHECK; 4381 EV_FREQUENT_CHECK;
3817} 4382}
3818 4383
3819void noinline 4384ecb_noinline
4385void
3820ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW 4386ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
3821{ 4387{
3822 /* TODO: use adjustheap and recalculation */ 4388 /* TODO: use adjustheap and recalculation */
3823 ev_periodic_stop (EV_A_ w); 4389 ev_periodic_stop (EV_A_ w);
3824 ev_periodic_start (EV_A_ w); 4390 ev_periodic_start (EV_A_ w);
3825} 4391}
… …
3829# define SA_RESTART 0 4395# define SA_RESTART 0
3830#endif 4396#endif
3831 4397
3832#if EV_SIGNAL_ENABLE 4398#if EV_SIGNAL_ENABLE
3833 4399
3834void noinline 4400ecb_noinline
4401void
3835ev_signal_start (EV_P_ ev_signal *w) EV_THROW 4402ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
3836{ 4403{
3837 if (expect_false (ev_is_active (w))) 4404 if (ecb_expect_false (ev_is_active (w)))
3838 return; 4405 return;
3839 4406
3840 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4407 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
3841 4408
3842#if EV_MULTIPLICITY 4409#if EV_MULTIPLICITY
… …
3911 } 4478 }
3912 4479
3913 EV_FREQUENT_CHECK; 4480 EV_FREQUENT_CHECK;
3914} 4481}
3915 4482
3916void noinline 4483ecb_noinline
4484void
3917ev_signal_stop (EV_P_ ev_signal *w) EV_THROW 4485ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
3918{ 4486{
3919 clear_pending (EV_A_ (W)w); 4487 clear_pending (EV_A_ (W)w);
3920 if (expect_false (!ev_is_active (w))) 4488 if (ecb_expect_false (!ev_is_active (w)))
3921 return; 4489 return;
3922 4490
3923 EV_FREQUENT_CHECK; 4491 EV_FREQUENT_CHECK;
3924 4492
3925 wlist_del (&signals [w->signum - 1].head, (WL)w); 4493 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
3953#endif 4521#endif
3954 4522
3955#if EV_CHILD_ENABLE 4523#if EV_CHILD_ENABLE
3956 4524
3957void 4525void
3958ev_child_start (EV_P_ ev_child *w) EV_THROW 4526ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
3959{ 4527{
3960#if EV_MULTIPLICITY 4528#if EV_MULTIPLICITY
3961 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4529 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3962#endif 4530#endif
3963 if (expect_false (ev_is_active (w))) 4531 if (ecb_expect_false (ev_is_active (w)))
3964 return; 4532 return;
3965 4533
3966 EV_FREQUENT_CHECK; 4534 EV_FREQUENT_CHECK;
3967 4535
3968 ev_start (EV_A_ (W)w, 1); 4536 ev_start (EV_A_ (W)w, 1);
… …
3970 4538
3971 EV_FREQUENT_CHECK; 4539 EV_FREQUENT_CHECK;
3972} 4540}
3973 4541
3974void 4542void
3975ev_child_stop (EV_P_ ev_child *w) EV_THROW 4543ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
3976{ 4544{
3977 clear_pending (EV_A_ (W)w); 4545 clear_pending (EV_A_ (W)w);
3978 if (expect_false (!ev_is_active (w))) 4546 if (ecb_expect_false (!ev_is_active (w)))
3979 return; 4547 return;
3980 4548
3981 EV_FREQUENT_CHECK; 4549 EV_FREQUENT_CHECK;
3982 4550
3983 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); 4551 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
… …
3997 4565
3998#define DEF_STAT_INTERVAL 5.0074891 4566#define DEF_STAT_INTERVAL 5.0074891
3999#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4567#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
4000#define MIN_STAT_INTERVAL 0.1074891 4568#define MIN_STAT_INTERVAL 0.1074891
4001 4569
4002static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4570ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
4003 4571
4004#if EV_USE_INOTIFY 4572#if EV_USE_INOTIFY
4005 4573
4006/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4574/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
4007# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4575# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
4008 4576
4009static void noinline 4577ecb_noinline
4578static void
4010infy_add (EV_P_ ev_stat *w) 4579infy_add (EV_P_ ev_stat *w)
4011{ 4580{
4012 w->wd = inotify_add_watch (fs_fd, w->path, 4581 w->wd = inotify_add_watch (fs_fd, w->path,
4013 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY 4582 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4014 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO 4583 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
… …
4078 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4647 if (ev_is_active (&w->timer)) ev_ref (EV_A);
4079 ev_timer_again (EV_A_ &w->timer); 4648 ev_timer_again (EV_A_ &w->timer);
4080 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4649 if (ev_is_active (&w->timer)) ev_unref (EV_A);
4081} 4650}
4082 4651
4083static void noinline 4652ecb_noinline
4653static void
4084infy_del (EV_P_ ev_stat *w) 4654infy_del (EV_P_ ev_stat *w)
4085{ 4655{
4086 int slot; 4656 int slot;
4087 int wd = w->wd; 4657 int wd = w->wd;
4088 4658
… …
4095 4665
4096 /* remove this watcher, if others are watching it, they will rearm */ 4666 /* remove this watcher, if others are watching it, they will rearm */
4097 inotify_rm_watch (fs_fd, wd); 4667 inotify_rm_watch (fs_fd, wd);
4098} 4668}
4099 4669
4100static void noinline 4670ecb_noinline
4671static void
4101infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4672infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
4102{ 4673{
4103 if (slot < 0) 4674 if (slot < 0)
4104 /* overflow, need to check for all hash slots */ 4675 /* overflow, need to check for all hash slots */
4105 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4676 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
4141 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4712 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4142 ofs += sizeof (struct inotify_event) + ev->len; 4713 ofs += sizeof (struct inotify_event) + ev->len;
4143 } 4714 }
4144} 4715}
4145 4716
4146inline_size void ecb_cold 4717inline_size ecb_cold
4718void
4147ev_check_2625 (EV_P) 4719ev_check_2625 (EV_P)
4148{ 4720{
4149 /* kernels < 2.6.25 are borked 4721 /* kernels < 2.6.25 are borked
4150 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4722 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
4151 */ 4723 */
… …
4241#else 4813#else
4242# define EV_LSTAT(p,b) lstat (p, b) 4814# define EV_LSTAT(p,b) lstat (p, b)
4243#endif 4815#endif
4244 4816
4245void 4817void
4246ev_stat_stat (EV_P_ ev_stat *w) EV_THROW 4818ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
4247{ 4819{
4248 if (lstat (w->path, &w->attr) < 0) 4820 if (lstat (w->path, &w->attr) < 0)
4249 w->attr.st_nlink = 0; 4821 w->attr.st_nlink = 0;
4250 else if (!w->attr.st_nlink) 4822 else if (!w->attr.st_nlink)
4251 w->attr.st_nlink = 1; 4823 w->attr.st_nlink = 1;
4252} 4824}
4253 4825
4254static void noinline 4826ecb_noinline
4827static void
4255stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4828stat_timer_cb (EV_P_ ev_timer *w_, int revents)
4256{ 4829{
4257 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4830 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
4258 4831
4259 ev_statdata prev = w->attr; 4832 ev_statdata prev = w->attr;
… …
4290 ev_feed_event (EV_A_ w, EV_STAT); 4863 ev_feed_event (EV_A_ w, EV_STAT);
4291 } 4864 }
4292} 4865}
4293 4866
4294void 4867void
4295ev_stat_start (EV_P_ ev_stat *w) EV_THROW 4868ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
4296{ 4869{
4297 if (expect_false (ev_is_active (w))) 4870 if (ecb_expect_false (ev_is_active (w)))
4298 return; 4871 return;
4299 4872
4300 ev_stat_stat (EV_A_ w); 4873 ev_stat_stat (EV_A_ w);
4301 4874
4302 if (w->interval < MIN_STAT_INTERVAL && w->interval) 4875 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
4321 4894
4322 EV_FREQUENT_CHECK; 4895 EV_FREQUENT_CHECK;
4323} 4896}
4324 4897
4325void 4898void
4326ev_stat_stop (EV_P_ ev_stat *w) EV_THROW 4899ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
4327{ 4900{
4328 clear_pending (EV_A_ (W)w); 4901 clear_pending (EV_A_ (W)w);
4329 if (expect_false (!ev_is_active (w))) 4902 if (ecb_expect_false (!ev_is_active (w)))
4330 return; 4903 return;
4331 4904
4332 EV_FREQUENT_CHECK; 4905 EV_FREQUENT_CHECK;
4333 4906
4334#if EV_USE_INOTIFY 4907#if EV_USE_INOTIFY
… …
4347} 4920}
4348#endif 4921#endif
4349 4922
4350#if EV_IDLE_ENABLE 4923#if EV_IDLE_ENABLE
4351void 4924void
4352ev_idle_start (EV_P_ ev_idle *w) EV_THROW 4925ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
4353{ 4926{
4354 if (expect_false (ev_is_active (w))) 4927 if (ecb_expect_false (ev_is_active (w)))
4355 return; 4928 return;
4356 4929
4357 pri_adjust (EV_A_ (W)w); 4930 pri_adjust (EV_A_ (W)w);
4358 4931
4359 EV_FREQUENT_CHECK; 4932 EV_FREQUENT_CHECK;
… …
4362 int active = ++idlecnt [ABSPRI (w)]; 4935 int active = ++idlecnt [ABSPRI (w)];
4363 4936
4364 ++idleall; 4937 ++idleall;
4365 ev_start (EV_A_ (W)w, active); 4938 ev_start (EV_A_ (W)w, active);
4366 4939
4367 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4940 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
4368 idles [ABSPRI (w)][active - 1] = w; 4941 idles [ABSPRI (w)][active - 1] = w;
4369 } 4942 }
4370 4943
4371 EV_FREQUENT_CHECK; 4944 EV_FREQUENT_CHECK;
4372} 4945}
4373 4946
4374void 4947void
4375ev_idle_stop (EV_P_ ev_idle *w) EV_THROW 4948ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
4376{ 4949{
4377 clear_pending (EV_A_ (W)w); 4950 clear_pending (EV_A_ (W)w);
4378 if (expect_false (!ev_is_active (w))) 4951 if (ecb_expect_false (!ev_is_active (w)))
4379 return; 4952 return;
4380 4953
4381 EV_FREQUENT_CHECK; 4954 EV_FREQUENT_CHECK;
4382 4955
4383 { 4956 {
… …
4394} 4967}
4395#endif 4968#endif
4396 4969
4397#if EV_PREPARE_ENABLE 4970#if EV_PREPARE_ENABLE
4398void 4971void
4399ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW 4972ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
4400{ 4973{
4401 if (expect_false (ev_is_active (w))) 4974 if (ecb_expect_false (ev_is_active (w)))
4402 return; 4975 return;
4403 4976
4404 EV_FREQUENT_CHECK; 4977 EV_FREQUENT_CHECK;
4405 4978
4406 ev_start (EV_A_ (W)w, ++preparecnt); 4979 ev_start (EV_A_ (W)w, ++preparecnt);
4407 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4980 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
4408 prepares [preparecnt - 1] = w; 4981 prepares [preparecnt - 1] = w;
4409 4982
4410 EV_FREQUENT_CHECK; 4983 EV_FREQUENT_CHECK;
4411} 4984}
4412 4985
4413void 4986void
4414ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW 4987ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
4415{ 4988{
4416 clear_pending (EV_A_ (W)w); 4989 clear_pending (EV_A_ (W)w);
4417 if (expect_false (!ev_is_active (w))) 4990 if (ecb_expect_false (!ev_is_active (w)))
4418 return; 4991 return;
4419 4992
4420 EV_FREQUENT_CHECK; 4993 EV_FREQUENT_CHECK;
4421 4994
4422 { 4995 {
… …
4432} 5005}
4433#endif 5006#endif
4434 5007
4435#if EV_CHECK_ENABLE 5008#if EV_CHECK_ENABLE
4436void 5009void
4437ev_check_start (EV_P_ ev_check *w) EV_THROW 5010ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
4438{ 5011{
4439 if (expect_false (ev_is_active (w))) 5012 if (ecb_expect_false (ev_is_active (w)))
4440 return; 5013 return;
4441 5014
4442 EV_FREQUENT_CHECK; 5015 EV_FREQUENT_CHECK;
4443 5016
4444 ev_start (EV_A_ (W)w, ++checkcnt); 5017 ev_start (EV_A_ (W)w, ++checkcnt);
4445 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 5018 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
4446 checks [checkcnt - 1] = w; 5019 checks [checkcnt - 1] = w;
4447 5020
4448 EV_FREQUENT_CHECK; 5021 EV_FREQUENT_CHECK;
4449} 5022}
4450 5023
4451void 5024void
4452ev_check_stop (EV_P_ ev_check *w) EV_THROW 5025ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
4453{ 5026{
4454 clear_pending (EV_A_ (W)w); 5027 clear_pending (EV_A_ (W)w);
4455 if (expect_false (!ev_is_active (w))) 5028 if (ecb_expect_false (!ev_is_active (w)))
4456 return; 5029 return;
4457 5030
4458 EV_FREQUENT_CHECK; 5031 EV_FREQUENT_CHECK;
4459 5032
4460 { 5033 {
… …
4469 EV_FREQUENT_CHECK; 5042 EV_FREQUENT_CHECK;
4470} 5043}
4471#endif 5044#endif
4472 5045
4473#if EV_EMBED_ENABLE 5046#if EV_EMBED_ENABLE
4474void noinline 5047ecb_noinline
5048void
4475ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW 5049ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
4476{ 5050{
4477 ev_run (w->other, EVRUN_NOWAIT); 5051 ev_run (w->other, EVRUN_NOWAIT);
4478} 5052}
4479 5053
4480static void 5054static void
… …
4502 ev_run (EV_A_ EVRUN_NOWAIT); 5076 ev_run (EV_A_ EVRUN_NOWAIT);
4503 } 5077 }
4504 } 5078 }
4505} 5079}
4506 5080
5081#if EV_FORK_ENABLE
4507static void 5082static void
4508embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 5083embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
4509{ 5084{
4510 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 5085 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
4511 5086
… …
4518 ev_run (EV_A_ EVRUN_NOWAIT); 5093 ev_run (EV_A_ EVRUN_NOWAIT);
4519 } 5094 }
4520 5095
4521 ev_embed_start (EV_A_ w); 5096 ev_embed_start (EV_A_ w);
4522} 5097}
5098#endif
4523 5099
4524#if 0 5100#if 0
4525static void 5101static void
4526embed_idle_cb (EV_P_ ev_idle *idle, int revents) 5102embed_idle_cb (EV_P_ ev_idle *idle, int revents)
4527{ 5103{
4528 ev_idle_stop (EV_A_ idle); 5104 ev_idle_stop (EV_A_ idle);
4529} 5105}
4530#endif 5106#endif
4531 5107
4532void 5108void
4533ev_embed_start (EV_P_ ev_embed *w) EV_THROW 5109ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
4534{ 5110{
4535 if (expect_false (ev_is_active (w))) 5111 if (ecb_expect_false (ev_is_active (w)))
4536 return; 5112 return;
4537 5113
4538 { 5114 {
4539 EV_P = w->other; 5115 EV_P = w->other;
4540 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 5116 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
… …
4548 5124
4549 ev_prepare_init (&w->prepare, embed_prepare_cb); 5125 ev_prepare_init (&w->prepare, embed_prepare_cb);
4550 ev_set_priority (&w->prepare, EV_MINPRI); 5126 ev_set_priority (&w->prepare, EV_MINPRI);
4551 ev_prepare_start (EV_A_ &w->prepare); 5127 ev_prepare_start (EV_A_ &w->prepare);
4552 5128
5129#if EV_FORK_ENABLE
4553 ev_fork_init (&w->fork, embed_fork_cb); 5130 ev_fork_init (&w->fork, embed_fork_cb);
4554 ev_fork_start (EV_A_ &w->fork); 5131 ev_fork_start (EV_A_ &w->fork);
5132#endif
4555 5133
4556 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 5134 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
4557 5135
4558 ev_start (EV_A_ (W)w, 1); 5136 ev_start (EV_A_ (W)w, 1);
4559 5137
4560 EV_FREQUENT_CHECK; 5138 EV_FREQUENT_CHECK;
4561} 5139}
4562 5140
4563void 5141void
4564ev_embed_stop (EV_P_ ev_embed *w) EV_THROW 5142ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
4565{ 5143{
4566 clear_pending (EV_A_ (W)w); 5144 clear_pending (EV_A_ (W)w);
4567 if (expect_false (!ev_is_active (w))) 5145 if (ecb_expect_false (!ev_is_active (w)))
4568 return; 5146 return;
4569 5147
4570 EV_FREQUENT_CHECK; 5148 EV_FREQUENT_CHECK;
4571 5149
4572 ev_io_stop (EV_A_ &w->io); 5150 ev_io_stop (EV_A_ &w->io);
4573 ev_prepare_stop (EV_A_ &w->prepare); 5151 ev_prepare_stop (EV_A_ &w->prepare);
5152#if EV_FORK_ENABLE
4574 ev_fork_stop (EV_A_ &w->fork); 5153 ev_fork_stop (EV_A_ &w->fork);
5154#endif
4575 5155
4576 ev_stop (EV_A_ (W)w); 5156 ev_stop (EV_A_ (W)w);
4577 5157
4578 EV_FREQUENT_CHECK; 5158 EV_FREQUENT_CHECK;
4579} 5159}
4580#endif 5160#endif
4581 5161
4582#if EV_FORK_ENABLE 5162#if EV_FORK_ENABLE
4583void 5163void
4584ev_fork_start (EV_P_ ev_fork *w) EV_THROW 5164ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
4585{ 5165{
4586 if (expect_false (ev_is_active (w))) 5166 if (ecb_expect_false (ev_is_active (w)))
4587 return; 5167 return;
4588 5168
4589 EV_FREQUENT_CHECK; 5169 EV_FREQUENT_CHECK;
4590 5170
4591 ev_start (EV_A_ (W)w, ++forkcnt); 5171 ev_start (EV_A_ (W)w, ++forkcnt);
4592 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5172 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
4593 forks [forkcnt - 1] = w; 5173 forks [forkcnt - 1] = w;
4594 5174
4595 EV_FREQUENT_CHECK; 5175 EV_FREQUENT_CHECK;
4596} 5176}
4597 5177
4598void 5178void
4599ev_fork_stop (EV_P_ ev_fork *w) EV_THROW 5179ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
4600{ 5180{
4601 clear_pending (EV_A_ (W)w); 5181 clear_pending (EV_A_ (W)w);
4602 if (expect_false (!ev_is_active (w))) 5182 if (ecb_expect_false (!ev_is_active (w)))
4603 return; 5183 return;
4604 5184
4605 EV_FREQUENT_CHECK; 5185 EV_FREQUENT_CHECK;
4606 5186
4607 { 5187 {
… …
4617} 5197}
4618#endif 5198#endif
4619 5199
4620#if EV_CLEANUP_ENABLE 5200#if EV_CLEANUP_ENABLE
4621void 5201void
4622ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW 5202ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4623{ 5203{
4624 if (expect_false (ev_is_active (w))) 5204 if (ecb_expect_false (ev_is_active (w)))
4625 return; 5205 return;
4626 5206
4627 EV_FREQUENT_CHECK; 5207 EV_FREQUENT_CHECK;
4628 5208
4629 ev_start (EV_A_ (W)w, ++cleanupcnt); 5209 ev_start (EV_A_ (W)w, ++cleanupcnt);
4630 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 5210 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
4631 cleanups [cleanupcnt - 1] = w; 5211 cleanups [cleanupcnt - 1] = w;
4632 5212
4633 /* cleanup watchers should never keep a refcount on the loop */ 5213 /* cleanup watchers should never keep a refcount on the loop */
4634 ev_unref (EV_A); 5214 ev_unref (EV_A);
4635 EV_FREQUENT_CHECK; 5215 EV_FREQUENT_CHECK;
4636} 5216}
4637 5217
4638void 5218void
4639ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW 5219ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4640{ 5220{
4641 clear_pending (EV_A_ (W)w); 5221 clear_pending (EV_A_ (W)w);
4642 if (expect_false (!ev_is_active (w))) 5222 if (ecb_expect_false (!ev_is_active (w)))
4643 return; 5223 return;
4644 5224
4645 EV_FREQUENT_CHECK; 5225 EV_FREQUENT_CHECK;
4646 ev_ref (EV_A); 5226 ev_ref (EV_A);
4647 5227
… …
4658} 5238}
4659#endif 5239#endif
4660 5240
4661#if EV_ASYNC_ENABLE 5241#if EV_ASYNC_ENABLE
4662void 5242void
4663ev_async_start (EV_P_ ev_async *w) EV_THROW 5243ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4664{ 5244{
4665 if (expect_false (ev_is_active (w))) 5245 if (ecb_expect_false (ev_is_active (w)))
4666 return; 5246 return;
4667 5247
4668 w->sent = 0; 5248 w->sent = 0;
4669 5249
4670 evpipe_init (EV_A); 5250 evpipe_init (EV_A);
4671 5251
4672 EV_FREQUENT_CHECK; 5252 EV_FREQUENT_CHECK;
4673 5253
4674 ev_start (EV_A_ (W)w, ++asynccnt); 5254 ev_start (EV_A_ (W)w, ++asynccnt);
4675 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5255 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
4676 asyncs [asynccnt - 1] = w; 5256 asyncs [asynccnt - 1] = w;
4677 5257
4678 EV_FREQUENT_CHECK; 5258 EV_FREQUENT_CHECK;
4679} 5259}
4680 5260
4681void 5261void
4682ev_async_stop (EV_P_ ev_async *w) EV_THROW 5262ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4683{ 5263{
4684 clear_pending (EV_A_ (W)w); 5264 clear_pending (EV_A_ (W)w);
4685 if (expect_false (!ev_is_active (w))) 5265 if (ecb_expect_false (!ev_is_active (w)))
4686 return; 5266 return;
4687 5267
4688 EV_FREQUENT_CHECK; 5268 EV_FREQUENT_CHECK;
4689 5269
4690 { 5270 {
… …
4698 5278
4699 EV_FREQUENT_CHECK; 5279 EV_FREQUENT_CHECK;
4700} 5280}
4701 5281
4702void 5282void
4703ev_async_send (EV_P_ ev_async *w) EV_THROW 5283ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
4704{ 5284{
4705 w->sent = 1; 5285 w->sent = 1;
4706 evpipe_write (EV_A_ &async_pending); 5286 evpipe_write (EV_A_ &async_pending);
4707} 5287}
4708#endif 5288#endif
… …
4745 5325
4746 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5326 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
4747} 5327}
4748 5328
4749void 5329void
4750ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW 5330ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
4751{ 5331{
4752 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5332 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
4753
4754 if (expect_false (!once))
4755 {
4756 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
4757 return;
4758 }
4759 5333
4760 once->cb = cb; 5334 once->cb = cb;
4761 once->arg = arg; 5335 once->arg = arg;
4762 5336
4763 ev_init (&once->io, once_cb_io); 5337 ev_init (&once->io, once_cb_io);
… …
4776} 5350}
4777 5351
4778/*****************************************************************************/ 5352/*****************************************************************************/
4779 5353
4780#if EV_WALK_ENABLE 5354#if EV_WALK_ENABLE
4781void ecb_cold 5355ecb_cold
5356void
4782ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW 5357ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
4783{ 5358{
4784 int i, j; 5359 int i, j;
4785 ev_watcher_list *wl, *wn; 5360 ev_watcher_list *wl, *wn;
4786 5361
4787 if (types & (EV_IO | EV_EMBED)) 5362 if (types & (EV_IO | EV_EMBED))

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