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Comparing libev/ev.c (file contents):
Revision 1.469 by root, Fri Sep 5 16:21:19 2014 UTC vs.
Revision 1.522 by root, Tue Dec 31 06:02:28 2019 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010,2011,2012,2013 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007-2019 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
… …
115# else 115# else
116# undef EV_USE_EPOLL 116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0 117# define EV_USE_EPOLL 0
118# endif 118# endif
119 119
120# if HAVE_LINUX_AIO_ABI_H
121# ifndef EV_USE_LINUXAIO
122# define EV_USE_LINUXAIO 0 /* was: EV_FEATURE_BACKENDS, always off by default */
123# endif
124# else
125# undef EV_USE_LINUXAIO
126# define EV_USE_LINUXAIO 0
127# endif
128
129# if HAVE_LINUX_FS_H && HAVE_SYS_TIMERFD_H && HAVE_KERNEL_RWF_T
130# ifndef EV_USE_IOURING
131# define EV_USE_IOURING EV_FEATURE_BACKENDS
132# endif
133# else
134# undef EV_USE_IOURING
135# define EV_USE_IOURING 0
136# endif
137
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H 138# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
121# ifndef EV_USE_KQUEUE 139# ifndef EV_USE_KQUEUE
122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS 140# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
123# endif 141# endif
124# else 142# else
… …
159# endif 177# endif
160# else 178# else
161# undef EV_USE_EVENTFD 179# undef EV_USE_EVENTFD
162# define EV_USE_EVENTFD 0 180# define EV_USE_EVENTFD 0
163# endif 181# endif
164 182
183# if HAVE_SYS_TIMERFD_H
184# ifndef EV_USE_TIMERFD
185# define EV_USE_TIMERFD EV_FEATURE_OS
186# endif
187# else
188# undef EV_USE_TIMERFD
189# define EV_USE_TIMERFD 0
165#endif 190# endif
191
192#endif
193
194/* OS X, in its infinite idiocy, actually HARDCODES
195 * a limit of 1024 into their select. Where people have brains,
196 * OS X engineers apparently have a vacuum. Or maybe they were
197 * ordered to have a vacuum, or they do anything for money.
198 * This might help. Or not.
199 * Note that this must be defined early, as other include files
200 * will rely on this define as well.
201 */
202#define _DARWIN_UNLIMITED_SELECT 1
166 203
167#include <stdlib.h> 204#include <stdlib.h>
168#include <string.h> 205#include <string.h>
169#include <fcntl.h> 206#include <fcntl.h>
170#include <stddef.h> 207#include <stddef.h>
… …
208# ifndef EV_SELECT_IS_WINSOCKET 245# ifndef EV_SELECT_IS_WINSOCKET
209# define EV_SELECT_IS_WINSOCKET 1 246# define EV_SELECT_IS_WINSOCKET 1
210# endif 247# endif
211# undef EV_AVOID_STDIO 248# undef EV_AVOID_STDIO
212#endif 249#endif
213
214/* OS X, in its infinite idiocy, actually HARDCODES
215 * a limit of 1024 into their select. Where people have brains,
216 * OS X engineers apparently have a vacuum. Or maybe they were
217 * ordered to have a vacuum, or they do anything for money.
218 * This might help. Or not.
219 */
220#define _DARWIN_UNLIMITED_SELECT 1
221 250
222/* this block tries to deduce configuration from header-defined symbols and defaults */ 251/* this block tries to deduce configuration from header-defined symbols and defaults */
223 252
224/* try to deduce the maximum number of signals on this platform */ 253/* try to deduce the maximum number of signals on this platform */
225#if defined EV_NSIG 254#if defined EV_NSIG
… …
256# else 285# else
257# define EV_USE_CLOCK_SYSCALL 0 286# define EV_USE_CLOCK_SYSCALL 0
258# endif 287# endif
259#endif 288#endif
260 289
290#if !(_POSIX_TIMERS > 0)
291# ifndef EV_USE_MONOTONIC
292# define EV_USE_MONOTONIC 0
293# endif
294# ifndef EV_USE_REALTIME
295# define EV_USE_REALTIME 0
296# endif
297#endif
298
261#ifndef EV_USE_MONOTONIC 299#ifndef EV_USE_MONOTONIC
262# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0 300# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
263# define EV_USE_MONOTONIC EV_FEATURE_OS 301# define EV_USE_MONOTONIC EV_FEATURE_OS
264# else 302# else
265# define EV_USE_MONOTONIC 0 303# define EV_USE_MONOTONIC 0
… …
304 342
305#ifndef EV_USE_PORT 343#ifndef EV_USE_PORT
306# define EV_USE_PORT 0 344# define EV_USE_PORT 0
307#endif 345#endif
308 346
347#ifndef EV_USE_LINUXAIO
348# if __linux /* libev currently assumes linux/aio_abi.h is always available on linux */
349# define EV_USE_LINUXAIO 0 /* was: 1, always off by default */
350# else
351# define EV_USE_LINUXAIO 0
352# endif
353#endif
354
355#ifndef EV_USE_IOURING
356# if __linux /* later checks might disable again */
357# define EV_USE_IOURING 1
358# else
359# define EV_USE_IOURING 0
360# endif
361#endif
362
309#ifndef EV_USE_INOTIFY 363#ifndef EV_USE_INOTIFY
310# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 364# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
311# define EV_USE_INOTIFY EV_FEATURE_OS 365# define EV_USE_INOTIFY EV_FEATURE_OS
312# else 366# else
313# define EV_USE_INOTIFY 0 367# define EV_USE_INOTIFY 0
… …
336# else 390# else
337# define EV_USE_SIGNALFD 0 391# define EV_USE_SIGNALFD 0
338# endif 392# endif
339#endif 393#endif
340 394
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
341#if 0 /* debugging */ 403#if 0 /* debugging */
342# define EV_VERIFY 3 404# define EV_VERIFY 3
343# define EV_USE_4HEAP 1 405# define EV_USE_4HEAP 1
344# define EV_HEAP_CACHE_AT 1 406# define EV_HEAP_CACHE_AT 1
345#endif 407#endif
… …
354 416
355#ifndef EV_HEAP_CACHE_AT 417#ifndef EV_HEAP_CACHE_AT
356# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 418# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
357#endif 419#endif
358 420
359#ifdef ANDROID 421#ifdef __ANDROID__
360/* supposedly, android doesn't typedef fd_mask */ 422/* supposedly, android doesn't typedef fd_mask */
361# undef EV_USE_SELECT 423# undef EV_USE_SELECT
362# define EV_USE_SELECT 0 424# define EV_USE_SELECT 0
363/* 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 */
364# undef EV_USE_CLOCK_SYSCALL 426# undef EV_USE_CLOCK_SYSCALL
… …
378# include <sys/syscall.h> 440# include <sys/syscall.h>
379# ifdef SYS_clock_gettime 441# ifdef SYS_clock_gettime
380# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 442# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
381# undef EV_USE_MONOTONIC 443# undef EV_USE_MONOTONIC
382# define EV_USE_MONOTONIC 1 444# define EV_USE_MONOTONIC 1
445# define EV_NEED_SYSCALL 1
383# else 446# else
384# undef EV_USE_CLOCK_SYSCALL 447# undef EV_USE_CLOCK_SYSCALL
385# define EV_USE_CLOCK_SYSCALL 0 448# define EV_USE_CLOCK_SYSCALL 0
386# endif 449# endif
387#endif 450#endif
… …
401#if !EV_STAT_ENABLE 464#if !EV_STAT_ENABLE
402# undef EV_USE_INOTIFY 465# undef EV_USE_INOTIFY
403# define EV_USE_INOTIFY 0 466# define EV_USE_INOTIFY 0
404#endif 467#endif
405 468
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
406#if !EV_USE_NANOSLEEP 477#if !EV_USE_NANOSLEEP
407/* 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 */
408# if !defined _WIN32 && !defined __hpux 479# if !defined _WIN32 && !defined __hpux
409# 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
410# endif 506# endif
411#endif 507#endif
412 508
413#if EV_USE_INOTIFY 509#if EV_USE_INOTIFY
414# include <sys/statfs.h> 510# include <sys/statfs.h>
… …
419# define EV_USE_INOTIFY 0 515# define EV_USE_INOTIFY 0
420# endif 516# endif
421#endif 517#endif
422 518
423#if EV_USE_EVENTFD 519#if EV_USE_EVENTFD
424/* 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 */
425# include <stdint.h> 521# include <stdint.h>
426# ifndef EFD_NONBLOCK 522# ifndef EFD_NONBLOCK
427# define EFD_NONBLOCK O_NONBLOCK 523# define EFD_NONBLOCK O_NONBLOCK
428# endif 524# endif
429# ifndef EFD_CLOEXEC 525# ifndef EFD_CLOEXEC
… …
435# endif 531# endif
436EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags); 532EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
437#endif 533#endif
438 534
439#if EV_USE_SIGNALFD 535#if EV_USE_SIGNALFD
440/* 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 */
441# include <stdint.h> 537# include <stdint.h>
442# ifndef SFD_NONBLOCK 538# ifndef SFD_NONBLOCK
443# define SFD_NONBLOCK O_NONBLOCK 539# define SFD_NONBLOCK O_NONBLOCK
444# endif 540# endif
445# ifndef SFD_CLOEXEC 541# ifndef SFD_CLOEXEC
… …
447# define SFD_CLOEXEC O_CLOEXEC 543# define SFD_CLOEXEC O_CLOEXEC
448# else 544# else
449# define SFD_CLOEXEC 02000000 545# define SFD_CLOEXEC 02000000
450# endif 546# endif
451# endif 547# endif
452EV_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);
453 549
454struct signalfd_siginfo 550struct signalfd_siginfo
455{ 551{
456 uint32_t ssi_signo; 552 uint32_t ssi_signo;
457 char pad[128 - sizeof (uint32_t)]; 553 char pad[128 - sizeof (uint32_t)];
458}; 554};
459#endif 555#endif
460 556
461/**/ 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/*****************************************************************************/
462 568
463#if EV_VERIFY >= 3 569#if EV_VERIFY >= 3
464# define EV_FREQUENT_CHECK ev_verify (EV_A) 570# define EV_FREQUENT_CHECK ev_verify (EV_A)
465#else 571#else
466# define EV_FREQUENT_CHECK do { } while (0) 572# define EV_FREQUENT_CHECK do { } while (0)
… …
471 * This value is good at least till the year 4000. 577 * This value is good at least till the year 4000.
472 */ 578 */
473#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */ 579#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
474/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */ 580/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
475 581
476#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) */
477#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) */
478 584
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
479#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)
480#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
481 602
482/* 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 */
483/* ECB.H BEGIN */ 604/* ECB.H BEGIN */
484/* 605/*
485 * libecb - http://software.schmorp.de/pkg/libecb 606 * libecb - http://software.schmorp.de/pkg/libecb
486 * 607 *
487 * Copyright (©) 2009-2014 Marc Alexander Lehmann <libecb@schmorp.de> 608 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
488 * Copyright (©) 2011 Emanuele Giaquinta 609 * Copyright (©) 2011 Emanuele Giaquinta
489 * All rights reserved. 610 * All rights reserved.
490 * 611 *
491 * 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-
492 * tion, are permitted provided that the following conditions are met: 613 * tion, are permitted provided that the following conditions are met:
… …
523 644
524#ifndef ECB_H 645#ifndef ECB_H
525#define ECB_H 646#define ECB_H
526 647
527/* 16 bits major, 16 bits minor */ 648/* 16 bits major, 16 bits minor */
528#define ECB_VERSION 0x00010003 649#define ECB_VERSION 0x00010006
529 650
530#ifdef _WIN32 651#ifdef _WIN32
531 typedef signed char int8_t; 652 typedef signed char int8_t;
532 typedef unsigned char uint8_t; 653 typedef unsigned char uint8_t;
533 typedef signed short int16_t; 654 typedef signed short int16_t;
… …
550 typedef uint32_t uintptr_t; 671 typedef uint32_t uintptr_t;
551 typedef int32_t intptr_t; 672 typedef int32_t intptr_t;
552 #endif 673 #endif
553#else 674#else
554 #include <inttypes.h> 675 #include <inttypes.h>
555 #if UINTMAX_MAX > 0xffffffffU 676 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
556 #define ECB_PTRSIZE 8 677 #define ECB_PTRSIZE 8
557 #else 678 #else
558 #define ECB_PTRSIZE 4 679 #define ECB_PTRSIZE 4
559 #endif 680 #endif
560#endif 681#endif
561 682
683#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
684#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
685
562/* work around x32 idiocy by defining proper macros */ 686/* work around x32 idiocy by defining proper macros */
563#if __amd64 || __x86_64 || _M_AMD64 || _M_X64 687#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
564 #if _ILP32 688 #if _ILP32
565 #define ECB_AMD64_X32 1 689 #define ECB_AMD64_X32 1
566 #else 690 #else
567 #define ECB_AMD64 1 691 #define ECB_AMD64 1
568 #endif 692 #endif
… …
573 * causing enormous grief in return for some better fake benchmark numbers. 697 * causing enormous grief in return for some better fake benchmark numbers.
574 * or so. 698 * or so.
575 * 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
576 * 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.
577 */ 701 */
578#ifndef ECB_GCC_VERSION
579 #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__
580 #define ECB_GCC_VERSION(major,minor) 0 703 #define ECB_GCC_VERSION(major,minor) 0
581 #else 704#else
582 #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)))
583 #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
584#endif 720#endif
585 721
586#define ECB_CPP (__cplusplus+0) 722#define ECB_CPP (__cplusplus+0)
587#define ECB_CPP11 (__cplusplus >= 201103L) 723#define ECB_CPP11 (__cplusplus >= 201103L)
724#define ECB_CPP14 (__cplusplus >= 201402L)
725#define ECB_CPP17 (__cplusplus >= 201703L)
588 726
589#if ECB_CPP 727#if ECB_CPP
590 #define ECB_C 0 728 #define ECB_C 0
591 #define ECB_STDC_VERSION 0 729 #define ECB_STDC_VERSION 0
592#else 730#else
… …
594 #define ECB_STDC_VERSION __STDC_VERSION__ 732 #define ECB_STDC_VERSION __STDC_VERSION__
595#endif 733#endif
596 734
597#define ECB_C99 (ECB_STDC_VERSION >= 199901L) 735#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
598#define ECB_C11 (ECB_STDC_VERSION >= 201112L) 736#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
737#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
599 738
600#if ECB_CPP 739#if ECB_CPP
601 #define ECB_EXTERN_C extern "C" 740 #define ECB_EXTERN_C extern "C"
602 #define ECB_EXTERN_C_BEG ECB_EXTERN_C { 741 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
603 #define ECB_EXTERN_C_END } 742 #define ECB_EXTERN_C_END }
… …
618 757
619#if ECB_NO_SMP 758#if ECB_NO_SMP
620 #define ECB_MEMORY_FENCE do { } while (0) 759 #define ECB_MEMORY_FENCE do { } while (0)
621#endif 760#endif
622 761
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
623#ifndef ECB_MEMORY_FENCE 771#ifndef ECB_MEMORY_FENCE
624 #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")
625 #if __i386 || __i386__ 774 #if __i386 || __i386__
626 #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")
627 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") 776 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
628 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 777 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
629 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__ 778 #elif ECB_GCC_AMD64
630 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 779 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
631 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") 780 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
632 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 781 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
633 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 782 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
634 #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 */
635 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \ 791 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
636 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ 792 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
793 || defined __ARM_ARCH_6T2__
637 #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")
638 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \ 795 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
639 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__ 796 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
640 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") 797 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
641 #elif __aarch64__ 798 #elif __aarch64__
642 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory") 799 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
643 #elif (__sparc || __sparc__) && !__sparcv8 800 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
644 #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")
645 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") 802 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
646 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") 803 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
647 #elif defined __s390__ || defined __s390x__ 804 #elif defined __s390__ || defined __s390x__
648 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") 805 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
… …
671 #if ECB_GCC_VERSION(4,7) 828 #if ECB_GCC_VERSION(4,7)
672 /* see comment below (stdatomic.h) about the C11 memory model. */ 829 /* see comment below (stdatomic.h) about the C11 memory model. */
673 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST) 830 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
674 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE) 831 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
675 #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)
676 834
677 /* The __has_feature syntax from clang is so misdesigned that we cannot use it 835 #elif ECB_CLANG_EXTENSION(c_atomic)
678 * without risking compile time errors with other compilers. We *could*
679 * define our own ecb_clang_has_feature, but I just can't be bothered to work
680 * around this shit time and again.
681 * #elif defined __clang && __has_feature (cxx_atomic)
682 * // see comment below (stdatomic.h) about the C11 memory model. 836 /* see comment below (stdatomic.h) about the C11 memory model. */
683 * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) 837 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
684 * #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE) 838 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
685 * #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE) 839 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
686 */ 840 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
687 841
688 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ 842 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
689 #define ECB_MEMORY_FENCE __sync_synchronize () 843 #define ECB_MEMORY_FENCE __sync_synchronize ()
690 #elif _MSC_VER >= 1500 /* VC++ 2008 */ 844 #elif _MSC_VER >= 1500 /* VC++ 2008 */
691 /* 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... */
… …
701 #elif defined _WIN32 855 #elif defined _WIN32
702 #include <WinNT.h> 856 #include <WinNT.h>
703 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ 857 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
704 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 858 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
705 #include <mbarrier.h> 859 #include <mbarrier.h>
706 #define ECB_MEMORY_FENCE __machine_rw_barrier () 860 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
707 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier () 861 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
708 #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 ()
709 #elif __xlC__ 864 #elif __xlC__
710 #define ECB_MEMORY_FENCE __sync () 865 #define ECB_MEMORY_FENCE __sync ()
711 #endif 866 #endif
712#endif 867#endif
713 868
714#ifndef ECB_MEMORY_FENCE 869#ifndef ECB_MEMORY_FENCE
715 #if ECB_C11 && !defined __STDC_NO_ATOMICS__ 870 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
716 /* 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, */
717 /* not just C11 atomics and atomic accesses */ 872 /* not just C11 atomics and atomic accesses */
718 #include <stdatomic.h> 873 #include <stdatomic.h>
719 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
720 /* any fence other than seq_cst, which isn't very efficient for us. */
721 /* Why that is, we don't know - either the C11 memory model is quite useless */
722 /* for most usages, or gcc and clang have a bug */
723 /* I *currently* lean towards the latter, and inefficiently implement */
724 /* all three of ecb's fences as a seq_cst fence */
725 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
726 /* for all __atomic_thread_fence's except seq_cst */
727 #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)
728 #endif 877 #endif
729#endif 878#endif
730 879
731#ifndef ECB_MEMORY_FENCE 880#ifndef ECB_MEMORY_FENCE
732 #if !ECB_AVOID_PTHREADS 881 #if !ECB_AVOID_PTHREADS
… …
752 901
753#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE 902#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
754 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 903 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
755#endif 904#endif
756 905
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
757/*****************************************************************************/ 910/*****************************************************************************/
758 911
759#if __cplusplus 912#if ECB_CPP
760 #define ecb_inline static inline 913 #define ecb_inline static inline
761#elif ECB_GCC_VERSION(2,5) 914#elif ECB_GCC_VERSION(2,5)
762 #define ecb_inline static __inline__ 915 #define ecb_inline static __inline__
763#elif ECB_C99 916#elif ECB_C99
764 #define ecb_inline static inline 917 #define ecb_inline static inline
… …
778 931
779#define ECB_CONCAT_(a, b) a ## b 932#define ECB_CONCAT_(a, b) a ## b
780#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) 933#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
781#define ECB_STRINGIFY_(a) # a 934#define ECB_STRINGIFY_(a) # a
782#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))
783 937
784#define ecb_function_ ecb_inline 938#define ecb_function_ ecb_inline
785 939
786#if ECB_GCC_VERSION(3,1) 940#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
787 #define ecb_attribute(attrlist) __attribute__(attrlist) 941 #define ecb_attribute(attrlist) __attribute__ (attrlist)
788 #define ecb_is_constant(expr) __builtin_constant_p (expr)
789 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
790 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
791#else 942#else
792 #define ecb_attribute(attrlist) 943 #define ecb_attribute(attrlist)
944#endif
793 945
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
794 /* possible C11 impl for integral types 949 /* possible C11 impl for integral types
795 typedef struct ecb_is_constant_struct ecb_is_constant_struct; 950 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
796 #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)) */
797 952
798 #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
799 #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
800 #define ecb_prefetch(addr,rw,locality) 965 #define ecb_prefetch(addr,rw,locality)
801#endif 966#endif
802 967
803/* no emulation for ecb_decltype */ 968/* no emulation for ecb_decltype */
804#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; };
805 #define ecb_decltype(x) __decltype(x) 972 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
806#elif ECB_GCC_VERSION(3,0) 973#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
807 #define ecb_decltype(x) __typeof(x) 974 #define ecb_decltype(x) __typeof__ (x)
808#endif 975#endif
809 976
810#if _MSC_VER >= 1300 977#if _MSC_VER >= 1300
811 #define ecb_deprecated __declspec(deprecated) 978 #define ecb_deprecated __declspec (deprecated)
812#else 979#else
813 #define ecb_deprecated ecb_attribute ((__deprecated__)) 980 #define ecb_deprecated ecb_attribute ((__deprecated__))
814#endif 981#endif
815 982
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
816#define ecb_noinline ecb_attribute ((__noinline__)) 994 #define ecb_noinline ecb_attribute ((__noinline__))
995#endif
996
817#define ecb_unused ecb_attribute ((__unused__)) 997#define ecb_unused ecb_attribute ((__unused__))
818#define ecb_const ecb_attribute ((__const__)) 998#define ecb_const ecb_attribute ((__const__))
819#define ecb_pure ecb_attribute ((__pure__)) 999#define ecb_pure ecb_attribute ((__pure__))
820 1000
821/* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx __declspec(noreturn) */ 1001#if ECB_C11 || __IBMC_NORETURN
822#if ECB_C11 1002 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
823 #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)
824#else 1009#else
825 #define ecb_noreturn ecb_attribute ((__noreturn__)) 1010 #define ecb_noreturn ecb_attribute ((__noreturn__))
826#endif 1011#endif
827 1012
828#if ECB_GCC_VERSION(4,3) 1013#if ECB_GCC_VERSION(4,3)
… …
843/* for compatibility to the rest of the world */ 1028/* for compatibility to the rest of the world */
844#define ecb_likely(expr) ecb_expect_true (expr) 1029#define ecb_likely(expr) ecb_expect_true (expr)
845#define ecb_unlikely(expr) ecb_expect_false (expr) 1030#define ecb_unlikely(expr) ecb_expect_false (expr)
846 1031
847/* count trailing zero bits and count # of one bits */ 1032/* count trailing zero bits and count # of one bits */
848#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))
849 /* 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 */
850 #define ecb_ld32(x) (__builtin_clz (x) ^ 31) 1038 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
851 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) 1039 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
852 #define ecb_ctz32(x) __builtin_ctz (x) 1040 #define ecb_ctz32(x) __builtin_ctz (x)
853 #define ecb_ctz64(x) __builtin_ctzll (x) 1041 #define ecb_ctz64(x) __builtin_ctzll (x)
854 #define ecb_popcount32(x) __builtin_popcount (x) 1042 #define ecb_popcount32(x) __builtin_popcount (x)
855 /* no popcountll */ 1043 /* no popcountll */
856#else 1044#else
857 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; 1045 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
858 ecb_function_ int 1046 ecb_function_ ecb_const int
859 ecb_ctz32 (uint32_t x) 1047 ecb_ctz32 (uint32_t x)
860 { 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
861 int r = 0; 1054 int r = 0;
862 1055
863 x &= ~x + 1; /* this isolates the lowest bit */ 1056 x &= ~x + 1; /* this isolates the lowest bit */
864 1057
865#if ECB_branchless_on_i386 1058#if ECB_branchless_on_i386
… …
875 if (x & 0xff00ff00) r += 8; 1068 if (x & 0xff00ff00) r += 8;
876 if (x & 0xffff0000) r += 16; 1069 if (x & 0xffff0000) r += 16;
877#endif 1070#endif
878 1071
879 return r; 1072 return r;
1073#endif
880 } 1074 }
881 1075
882 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; 1076 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
883 ecb_function_ int 1077 ecb_function_ ecb_const int
884 ecb_ctz64 (uint64_t x) 1078 ecb_ctz64 (uint64_t x)
885 { 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
886 int shift = x & 0xffffffffU ? 0 : 32; 1085 int shift = x & 0xffffffff ? 0 : 32;
887 return ecb_ctz32 (x >> shift) + shift; 1086 return ecb_ctz32 (x >> shift) + shift;
1087#endif
888 } 1088 }
889 1089
890 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; 1090 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
891 ecb_function_ int 1091 ecb_function_ ecb_const int
892 ecb_popcount32 (uint32_t x) 1092 ecb_popcount32 (uint32_t x)
893 { 1093 {
894 x -= (x >> 1) & 0x55555555; 1094 x -= (x >> 1) & 0x55555555;
895 x = ((x >> 2) & 0x33333333) + (x & 0x33333333); 1095 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
896 x = ((x >> 4) + x) & 0x0f0f0f0f; 1096 x = ((x >> 4) + x) & 0x0f0f0f0f;
897 x *= 0x01010101; 1097 x *= 0x01010101;
898 1098
899 return x >> 24; 1099 return x >> 24;
900 } 1100 }
901 1101
902 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; 1102 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
903 ecb_function_ int ecb_ld32 (uint32_t x) 1103 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
904 { 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
905 int r = 0; 1110 int r = 0;
906 1111
907 if (x >> 16) { x >>= 16; r += 16; } 1112 if (x >> 16) { x >>= 16; r += 16; }
908 if (x >> 8) { x >>= 8; r += 8; } 1113 if (x >> 8) { x >>= 8; r += 8; }
909 if (x >> 4) { x >>= 4; r += 4; } 1114 if (x >> 4) { x >>= 4; r += 4; }
910 if (x >> 2) { x >>= 2; r += 2; } 1115 if (x >> 2) { x >>= 2; r += 2; }
911 if (x >> 1) { r += 1; } 1116 if (x >> 1) { r += 1; }
912 1117
913 return r; 1118 return r;
1119#endif
914 } 1120 }
915 1121
916 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; 1122 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
917 ecb_function_ int ecb_ld64 (uint64_t x) 1123 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
918 { 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
919 int r = 0; 1130 int r = 0;
920 1131
921 if (x >> 32) { x >>= 32; r += 32; } 1132 if (x >> 32) { x >>= 32; r += 32; }
922 1133
923 return r + ecb_ld32 (x); 1134 return r + ecb_ld32 (x);
1135#endif
924 } 1136 }
925#endif 1137#endif
926 1138
927ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const; 1139ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
928ecb_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)); }
929ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const; 1141ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
930ecb_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)); }
931 1143
932ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const; 1144ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
933ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) 1145ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
934{ 1146{
935 return ( (x * 0x0802U & 0x22110U) 1147 return ( (x * 0x0802U & 0x22110U)
936 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; 1148 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
937} 1149}
938 1150
939ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const; 1151ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
940ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) 1152ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
941{ 1153{
942 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1); 1154 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
943 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2); 1155 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
944 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4); 1156 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
945 x = ( x >> 8 ) | ( x << 8); 1157 x = ( x >> 8 ) | ( x << 8);
946 1158
947 return x; 1159 return x;
948} 1160}
949 1161
950ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const; 1162ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
951ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) 1163ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
952{ 1164{
953 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1); 1165 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
954 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2); 1166 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
955 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4); 1167 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
956 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8); 1168 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
… …
959 return x; 1171 return x;
960} 1172}
961 1173
962/* popcount64 is only available on 64 bit cpus as gcc builtin */ 1174/* popcount64 is only available on 64 bit cpus as gcc builtin */
963/* so for this version we are lazy */ 1175/* so for this version we are lazy */
964ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 1176ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
965ecb_function_ int 1177ecb_function_ ecb_const int
966ecb_popcount64 (uint64_t x) 1178ecb_popcount64 (uint64_t x)
967{ 1179{
968 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); 1180 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
969} 1181}
970 1182
971ecb_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);
972ecb_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);
973ecb_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);
974ecb_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);
975ecb_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);
976ecb_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);
977ecb_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);
978ecb_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);
979 1191
980ecb_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); }
981ecb_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); }
982ecb_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); }
983ecb_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); }
984ecb_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); }
985ecb_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); }
986ecb_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); }
987ecb_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); }
988 1200
989#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
990 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 1205 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1206 #endif
991 #define ecb_bswap32(x) __builtin_bswap32 (x) 1207 #define ecb_bswap32(x) __builtin_bswap32 (x)
992 #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)))
993#else 1214#else
994 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; 1215 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
995 ecb_function_ uint16_t 1216 ecb_function_ ecb_const uint16_t
996 ecb_bswap16 (uint16_t x) 1217 ecb_bswap16 (uint16_t x)
997 { 1218 {
998 return ecb_rotl16 (x, 8); 1219 return ecb_rotl16 (x, 8);
999 } 1220 }
1000 1221
1001 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; 1222 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1002 ecb_function_ uint32_t 1223 ecb_function_ ecb_const uint32_t
1003 ecb_bswap32 (uint32_t x) 1224 ecb_bswap32 (uint32_t x)
1004 { 1225 {
1005 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); 1226 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1006 } 1227 }
1007 1228
1008 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; 1229 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1009 ecb_function_ uint64_t 1230 ecb_function_ ecb_const uint64_t
1010 ecb_bswap64 (uint64_t x) 1231 ecb_bswap64 (uint64_t x)
1011 { 1232 {
1012 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); 1233 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1013 } 1234 }
1014#endif 1235#endif
1015 1236
1016#if ECB_GCC_VERSION(4,5) 1237#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1017 #define ecb_unreachable() __builtin_unreachable () 1238 #define ecb_unreachable() __builtin_unreachable ()
1018#else 1239#else
1019 /* 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 :/ */
1020 ecb_inline void ecb_unreachable (void) ecb_noreturn; 1241 ecb_inline ecb_noreturn void ecb_unreachable (void);
1021 ecb_inline void ecb_unreachable (void) { } 1242 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1022#endif 1243#endif
1023 1244
1024/* try to tell the compiler that some condition is definitely true */ 1245/* try to tell the compiler that some condition is definitely true */
1025#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0 1246#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1026 1247
1027ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const; 1248ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1028ecb_inline unsigned char 1249ecb_inline ecb_const uint32_t
1029ecb_byteorder_helper (void) 1250ecb_byteorder_helper (void)
1030{ 1251{
1031 /* the union code still generates code under pressure in gcc, */ 1252 /* the union code still generates code under pressure in gcc, */
1032 /* but less than using pointers, and always seems to */ 1253 /* but less than using pointers, and always seems to */
1033 /* successfully return a constant. */ 1254 /* successfully return a constant. */
1034 /* the reason why we have this horrible preprocessor mess */ 1255 /* the reason why we have this horrible preprocessor mess */
1035 /* 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 */
1036 /* or when using a recent enough gcc version (>= 4.6) */ 1257 /* or when using a recent enough gcc version (>= 4.6) */
1037#if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64
1038 return 0x44;
1039#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
1040 return 0x44; 1261 return 0x44332211;
1041#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
1042 return 0x11; 1265 return 0x11223344;
1043#else 1266#else
1044 union 1267 union
1045 { 1268 {
1269 uint8_t c[4];
1046 uint32_t i; 1270 uint32_t u;
1047 uint8_t c;
1048 } u = { 0x11223344 }; 1271 } u = { 0x11, 0x22, 0x33, 0x44 };
1049 return u.c; 1272 return u.u;
1050#endif 1273#endif
1051} 1274}
1052 1275
1053ecb_inline ecb_bool ecb_big_endian (void) ecb_const; 1276ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1054ecb_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; }
1055ecb_inline ecb_bool ecb_little_endian (void) ecb_const; 1278ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1056ecb_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; }
1057 1280
1058#if ECB_GCC_VERSION(3,0) || ECB_C99 1281#if ECB_GCC_VERSION(3,0) || ECB_C99
1059 #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))
1060#else 1283#else
1061 #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)))
1062#endif 1285#endif
1063 1286
1064#if __cplusplus 1287#if ECB_CPP
1065 template<typename T> 1288 template<typename T>
1066 static inline T ecb_div_rd (T val, T div) 1289 static inline T ecb_div_rd (T val, T div)
1067 { 1290 {
1068 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; 1291 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1069 } 1292 }
… …
1086 } 1309 }
1087#else 1310#else
1088 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1311 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1089#endif 1312#endif
1090 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
1091/*******************************************************************************/ 1410/*******************************************************************************/
1092/* floating point stuff, can be disabled by defining ECB_NO_LIBM */ 1411/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1093 1412
1094/* basically, everything uses "ieee pure-endian" floating point numbers */ 1413/* basically, everything uses "ieee pure-endian" floating point numbers */
1095/* the only noteworthy exception is ancient armle, which uses order 43218765 */ 1414/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1096#if 0 \ 1415#if 0 \
1097 || __i386 || __i386__ \ 1416 || __i386 || __i386__ \
1098 || __amd64 || __amd64__ || __x86_64 || __x86_64__ \ 1417 || ECB_GCC_AMD64 \
1099 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \ 1418 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1100 || defined __s390__ || defined __s390x__ \ 1419 || defined __s390__ || defined __s390x__ \
1101 || defined __mips__ \ 1420 || defined __mips__ \
1102 || defined __alpha__ \ 1421 || defined __alpha__ \
1103 || defined __hppa__ \ 1422 || defined __hppa__ \
1104 || defined __ia64__ \ 1423 || defined __ia64__ \
1105 || defined __m68k__ \ 1424 || defined __m68k__ \
1106 || defined __m88k__ \ 1425 || defined __m88k__ \
1107 || defined __sh__ \ 1426 || defined __sh__ \
1108 || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64 \ 1427 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1109 || (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__)) \
1110 || defined __aarch64__ 1429 || defined __aarch64__
1111 #define ECB_STDFP 1 1430 #define ECB_STDFP 1
1112 #include <string.h> /* for memcpy */ 1431 #include <string.h> /* for memcpy */
1113#else 1432#else
… …
1129 #define ECB_NAN NAN 1448 #define ECB_NAN NAN
1130 #else 1449 #else
1131 #define ECB_NAN ECB_INFINITY 1450 #define ECB_NAN ECB_INFINITY
1132 #endif 1451 #endif
1133 1452
1134 /* converts an ieee half/binary16 to a float */ 1453 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1135 ecb_function_ float ecb_binary16_to_float (uint16_t x) ecb_const; 1454 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1136 ecb_function_ float 1455 #define ecb_frexpf(x,e) frexpf ((x), (e))
1137 ecb_binary16_to_float (uint16_t x) 1456 #else
1138 { 1457 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1139 int e = (x >> 10) & 0x1f; 1458 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1140 int m = x & 0x3ff; 1459 #endif
1141 float r;
1142
1143 if (!e ) r = ldexpf (m , -24);
1144 else if (e != 31) r = ldexpf (m + 0x400, e - 25);
1145 else if (m ) r = ECB_NAN;
1146 else r = ECB_INFINITY;
1147
1148 return x & 0x8000 ? -r : r;
1149 }
1150 1460
1151 /* convert a float to ieee single/binary32 */ 1461 /* convert a float to ieee single/binary32 */
1152 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);
1153 ecb_function_ uint32_t 1463 ecb_function_ ecb_const uint32_t
1154 ecb_float_to_binary32 (float x) 1464 ecb_float_to_binary32 (float x)
1155 { 1465 {
1156 uint32_t r; 1466 uint32_t r;
1157 1467
1158 #if ECB_STDFP 1468 #if ECB_STDFP
… …
1165 if (x == 0e0f ) return 0x00000000U; 1475 if (x == 0e0f ) return 0x00000000U;
1166 if (x > +3.40282346638528860e+38f) return 0x7f800000U; 1476 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1167 if (x < -3.40282346638528860e+38f) return 0xff800000U; 1477 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1168 if (x != x ) return 0x7fbfffffU; 1478 if (x != x ) return 0x7fbfffffU;
1169 1479
1170 m = frexpf (x, &e) * 0x1000000U; 1480 m = ecb_frexpf (x, &e) * 0x1000000U;
1171 1481
1172 r = m & 0x80000000U; 1482 r = m & 0x80000000U;
1173 1483
1174 if (r) 1484 if (r)
1175 m = -m; 1485 m = -m;
… …
1187 1497
1188 return r; 1498 return r;
1189 } 1499 }
1190 1500
1191 /* converts an ieee single/binary32 to a float */ 1501 /* converts an ieee single/binary32 to a float */
1192 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);
1193 ecb_function_ float 1503 ecb_function_ ecb_const float
1194 ecb_binary32_to_float (uint32_t x) 1504 ecb_binary32_to_float (uint32_t x)
1195 { 1505 {
1196 float r; 1506 float r;
1197 1507
1198 #if ECB_STDFP 1508 #if ECB_STDFP
… …
1208 x |= 0x800000U; 1518 x |= 0x800000U;
1209 else 1519 else
1210 e = 1; 1520 e = 1;
1211 1521
1212 /* 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 */
1213 r = ldexpf (x * (0.5f / 0x800000U), e - 126); 1523 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1214 1524
1215 r = neg ? -r : r; 1525 r = neg ? -r : r;
1216 #endif 1526 #endif
1217 1527
1218 return r; 1528 return r;
1219 } 1529 }
1220 1530
1221 /* convert a double to ieee double/binary64 */ 1531 /* convert a double to ieee double/binary64 */
1222 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);
1223 ecb_function_ uint64_t 1533 ecb_function_ ecb_const uint64_t
1224 ecb_double_to_binary64 (double x) 1534 ecb_double_to_binary64 (double x)
1225 { 1535 {
1226 uint64_t r; 1536 uint64_t r;
1227 1537
1228 #if ECB_STDFP 1538 #if ECB_STDFP
… …
1257 1567
1258 return r; 1568 return r;
1259 } 1569 }
1260 1570
1261 /* converts an ieee double/binary64 to a double */ 1571 /* converts an ieee double/binary64 to a double */
1262 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);
1263 ecb_function_ double 1573 ecb_function_ ecb_const double
1264 ecb_binary64_to_double (uint64_t x) 1574 ecb_binary64_to_double (uint64_t x)
1265 { 1575 {
1266 double r; 1576 double r;
1267 1577
1268 #if ECB_STDFP 1578 #if ECB_STDFP
… …
1286 #endif 1596 #endif
1287 1597
1288 return r; 1598 return r;
1289 } 1599 }
1290 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
1291#endif 1617#endif
1292 1618
1293#endif 1619#endif
1294 1620
1295/* ECB.H END */ 1621/* ECB.H END */
1296 1622
1297#if ECB_MEMORY_FENCE_NEEDS_PTHREADS 1623#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1298/* 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
1299 * 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
1300 * 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
1301 * libev, in which cases the memory fences become nops. 1627 * libev, in which cases the memory fences become nops.
1302 * alternatively, you can remove this #error and link against libpthread, 1628 * alternatively, you can remove this #error and link against libpthread,
1303 * which will then provide the memory fences. 1629 * which will then provide the memory fences.
1304 */ 1630 */
1305# error "memory fences not defined for your architecture, please report" 1631# error "memory fences not defined for your architecture, please report"
… …
1309# define ECB_MEMORY_FENCE do { } while (0) 1635# define ECB_MEMORY_FENCE do { } while (0)
1310# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 1636# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1311# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 1637# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1312#endif 1638#endif
1313 1639
1314#define expect_false(cond) ecb_expect_false (cond)
1315#define expect_true(cond) ecb_expect_true (cond)
1316#define noinline ecb_noinline
1317
1318#define inline_size ecb_inline 1640#define inline_size ecb_inline
1319 1641
1320#if EV_FEATURE_CODE 1642#if EV_FEATURE_CODE
1321# define inline_speed ecb_inline 1643# define inline_speed ecb_inline
1322#else 1644#else
1323# define inline_speed static noinline 1645# define inline_speed ecb_noinline static
1324#endif 1646#endif
1647
1648/*****************************************************************************/
1649/* raw syscall wrappers */
1650
1651#if EV_NEED_SYSCALL
1652
1653#include <sys/syscall.h>
1654
1655/*
1656 * define some syscall wrappers for common architectures
1657 * this is mostly for nice looks during debugging, not performance.
1658 * our syscalls return < 0, not == -1, on error. which is good
1659 * enough for linux aio.
1660 * TODO: arm is also common nowadays, maybe even mips and x86
1661 * TODO: after implementing this, it suddenly looks like overkill, but its hard to remove...
1662 */
1663#if __GNUC__ && __linux && ECB_AMD64 && !EV_FEATURE_CODE
1664 /* the costly errno access probably kills this for size optimisation */
1665
1666 #define ev_syscall(nr,narg,arg1,arg2,arg3,arg4,arg5,arg6) \
1667 ({ \
1668 long res; \
1669 register unsigned long r6 __asm__ ("r9" ); \
1670 register unsigned long r5 __asm__ ("r8" ); \
1671 register unsigned long r4 __asm__ ("r10"); \
1672 register unsigned long r3 __asm__ ("rdx"); \
1673 register unsigned long r2 __asm__ ("rsi"); \
1674 register unsigned long r1 __asm__ ("rdi"); \
1675 if (narg >= 6) r6 = (unsigned long)(arg6); \
1676 if (narg >= 5) r5 = (unsigned long)(arg5); \
1677 if (narg >= 4) r4 = (unsigned long)(arg4); \
1678 if (narg >= 3) r3 = (unsigned long)(arg3); \
1679 if (narg >= 2) r2 = (unsigned long)(arg2); \
1680 if (narg >= 1) r1 = (unsigned long)(arg1); \
1681 __asm__ __volatile__ ( \
1682 "syscall\n\t" \
1683 : "=a" (res) \
1684 : "0" (nr), "r" (r1), "r" (r2), "r" (r3), "r" (r4), "r" (r5) \
1685 : "cc", "r11", "cx", "memory"); \
1686 errno = -res; \
1687 res; \
1688 })
1689
1690#endif
1691
1692#ifdef ev_syscall
1693 #define ev_syscall0(nr) ev_syscall (nr, 0, 0, 0, 0, 0, 0, 0)
1694 #define ev_syscall1(nr,arg1) ev_syscall (nr, 1, arg1, 0, 0, 0, 0, 0)
1695 #define ev_syscall2(nr,arg1,arg2) ev_syscall (nr, 2, arg1, arg2, 0, 0, 0, 0)
1696 #define ev_syscall3(nr,arg1,arg2,arg3) ev_syscall (nr, 3, arg1, arg2, arg3, 0, 0, 0)
1697 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) ev_syscall (nr, 3, arg1, arg2, arg3, arg4, 0, 0)
1698 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) ev_syscall (nr, 5, arg1, arg2, arg3, arg4, arg5, 0)
1699 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) ev_syscall (nr, 6, arg1, arg2, arg3, arg4, arg5,arg6)
1700#else
1701 #define ev_syscall0(nr) syscall (nr)
1702 #define ev_syscall1(nr,arg1) syscall (nr, arg1)
1703 #define ev_syscall2(nr,arg1,arg2) syscall (nr, arg1, arg2)
1704 #define ev_syscall3(nr,arg1,arg2,arg3) syscall (nr, arg1, arg2, arg3)
1705 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) syscall (nr, arg1, arg2, arg3, arg4)
1706 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) syscall (nr, arg1, arg2, arg3, arg4, arg5)
1707 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) syscall (nr, arg1, arg2, arg3, arg4, arg5,arg6)
1708#endif
1709
1710#endif
1711
1712/*****************************************************************************/
1325 1713
1326#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1714#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
1327 1715
1328#if EV_MINPRI == EV_MAXPRI 1716#if EV_MINPRI == EV_MAXPRI
1329# define ABSPRI(w) (((W)w), 0) 1717# define ABSPRI(w) (((W)w), 0)
1330#else 1718#else
1331# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1719# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
1332#endif 1720#endif
1333 1721
1334#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1722#define EMPTY /* required for microsofts broken pseudo-c compiler */
1335#define EMPTY2(a,b) /* used to suppress some warnings */
1336 1723
1337typedef ev_watcher *W; 1724typedef ev_watcher *W;
1338typedef ev_watcher_list *WL; 1725typedef ev_watcher_list *WL;
1339typedef ev_watcher_time *WT; 1726typedef ev_watcher_time *WT;
1340 1727
… …
1365# include "ev_win32.c" 1752# include "ev_win32.c"
1366#endif 1753#endif
1367 1754
1368/*****************************************************************************/ 1755/*****************************************************************************/
1369 1756
1757#if EV_USE_LINUXAIO
1758# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1759#endif
1760
1370/* define a suitable floor function (only used by periodics atm) */ 1761/* define a suitable floor function (only used by periodics atm) */
1371 1762
1372#if EV_USE_FLOOR 1763#if EV_USE_FLOOR
1373# include <math.h> 1764# include <math.h>
1374# define ev_floor(v) floor (v) 1765# define ev_floor(v) floor (v)
1375#else 1766#else
1376 1767
1377#include <float.h> 1768#include <float.h>
1378 1769
1379/* 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
1380static ev_tstamp noinline 1772static ev_tstamp
1381ev_floor (ev_tstamp v) 1773ev_floor (ev_tstamp v)
1382{ 1774{
1383 /* the choice of shift factor is not terribly important */ 1775 /* the choice of shift factor is not terribly important */
1384#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1776#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1385 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1777 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1386#else 1778#else
1387 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; 1779 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1388#endif 1780#endif
1389 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
1390 /* argument too large for an unsigned long? */ 1790 /* argument too large for an unsigned long? then reduce it */
1391 if (expect_false (v >= shift)) 1791 if (ecb_expect_false (v >= shift))
1392 { 1792 {
1393 ev_tstamp f; 1793 ev_tstamp f;
1394 1794
1395 if (v == v - 1.) 1795 if (v == v - 1.)
1396 return v; /* very large number */ 1796 return v; /* very large numbers are assumed to be integer */
1397 1797
1398 f = shift * ev_floor (v * (1. / shift)); 1798 f = shift * ev_floor (v * (1. / shift));
1399 return f + ev_floor (v - f); 1799 return f + ev_floor (v - f);
1400 } 1800 }
1401 1801
1402 /* special treatment for negative args? */
1403 if (expect_false (v < 0.))
1404 {
1405 ev_tstamp f = -ev_floor (-v);
1406
1407 return f - (f == v ? 0 : 1);
1408 }
1409
1410 /* fits into an unsigned long */ 1802 /* fits into an unsigned long */
1411 return (unsigned long)v; 1803 return (unsigned long)v;
1412} 1804}
1413 1805
1414#endif 1806#endif
… …
1417 1809
1418#ifdef __linux 1810#ifdef __linux
1419# include <sys/utsname.h> 1811# include <sys/utsname.h>
1420#endif 1812#endif
1421 1813
1422static unsigned int noinline ecb_cold 1814ecb_noinline ecb_cold
1815static unsigned int
1423ev_linux_version (void) 1816ev_linux_version (void)
1424{ 1817{
1425#ifdef __linux 1818#ifdef __linux
1426 unsigned int v = 0; 1819 unsigned int v = 0;
1427 struct utsname buf; 1820 struct utsname buf;
… …
1456} 1849}
1457 1850
1458/*****************************************************************************/ 1851/*****************************************************************************/
1459 1852
1460#if EV_AVOID_STDIO 1853#if EV_AVOID_STDIO
1461static void noinline ecb_cold 1854ecb_noinline ecb_cold
1855static void
1462ev_printerr (const char *msg) 1856ev_printerr (const char *msg)
1463{ 1857{
1464 write (STDERR_FILENO, msg, strlen (msg)); 1858 write (STDERR_FILENO, msg, strlen (msg));
1465} 1859}
1466#endif 1860#endif
1467 1861
1468static void (*syserr_cb)(const char *msg) EV_THROW; 1862static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
1469 1863
1470void ecb_cold 1864ecb_cold
1865void
1471ev_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
1472{ 1867{
1473 syserr_cb = cb; 1868 syserr_cb = cb;
1474} 1869}
1475 1870
1476static void noinline ecb_cold 1871ecb_noinline ecb_cold
1872static void
1477ev_syserr (const char *msg) 1873ev_syserr (const char *msg)
1478{ 1874{
1479 if (!msg) 1875 if (!msg)
1480 msg = "(libev) system error"; 1876 msg = "(libev) system error";
1481 1877
… …
1494 abort (); 1890 abort ();
1495 } 1891 }
1496} 1892}
1497 1893
1498static void * 1894static void *
1499ev_realloc_emul (void *ptr, long size) EV_THROW 1895ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
1500{ 1896{
1501 /* some systems, notably openbsd and darwin, fail to properly 1897 /* some systems, notably openbsd and darwin, fail to properly
1502 * 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
1503 * the single unix specification, so work around them here. 1899 * the single unix specification, so work around them here.
1504 * recently, also (at least) fedora and debian started breaking it, 1900 * recently, also (at least) fedora and debian started breaking it,
… …
1510 1906
1511 free (ptr); 1907 free (ptr);
1512 return 0; 1908 return 0;
1513} 1909}
1514 1910
1515static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul; 1911static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
1516 1912
1517void ecb_cold 1913ecb_cold
1914void
1518ev_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
1519{ 1916{
1520 alloc = cb; 1917 alloc = cb;
1521} 1918}
1522 1919
1523inline_speed void * 1920inline_speed void *
… …
1550typedef struct 1947typedef struct
1551{ 1948{
1552 WL head; 1949 WL head;
1553 unsigned char events; /* the events watched for */ 1950 unsigned char events; /* the events watched for */
1554 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) */
1555 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 */
1556 unsigned char unused; 1953 unsigned char eflags; /* flags field for use by backends */
1557#if EV_USE_EPOLL 1954#if EV_USE_EPOLL
1558 unsigned int egen; /* generation counter to counter epoll bugs */ 1955 unsigned int egen; /* generation counter to counter epoll bugs */
1559#endif 1956#endif
1560#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 1957#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1561 SOCKET handle; 1958 SOCKET handle;
… …
1615 static struct ev_loop default_loop_struct; 2012 static struct ev_loop default_loop_struct;
1616 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 */
1617 2014
1618#else 2015#else
1619 2016
1620 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 */
1621 #define VAR(name,decl) static decl; 2018 #define VAR(name,decl) static decl;
1622 #include "ev_vars.h" 2019 #include "ev_vars.h"
1623 #undef VAR 2020 #undef VAR
1624 2021
1625 static int ev_default_loop_ptr; 2022 static int ev_default_loop_ptr;
1626 2023
1627#endif 2024#endif
1628 2025
1629#if EV_FEATURE_API 2026#if EV_FEATURE_API
1630# 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)
1631# 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)
1632# define EV_INVOKE_PENDING invoke_cb (EV_A) 2029# define EV_INVOKE_PENDING invoke_cb (EV_A)
1633#else 2030#else
1634# define EV_RELEASE_CB (void)0 2031# define EV_RELEASE_CB (void)0
1635# define EV_ACQUIRE_CB (void)0 2032# define EV_ACQUIRE_CB (void)0
1636# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 2033# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
… …
1640 2037
1641/*****************************************************************************/ 2038/*****************************************************************************/
1642 2039
1643#ifndef EV_HAVE_EV_TIME 2040#ifndef EV_HAVE_EV_TIME
1644ev_tstamp 2041ev_tstamp
1645ev_time (void) EV_THROW 2042ev_time (void) EV_NOEXCEPT
1646{ 2043{
1647#if EV_USE_REALTIME 2044#if EV_USE_REALTIME
1648 if (expect_true (have_realtime)) 2045 if (ecb_expect_true (have_realtime))
1649 { 2046 {
1650 struct timespec ts; 2047 struct timespec ts;
1651 clock_gettime (CLOCK_REALTIME, &ts); 2048 clock_gettime (CLOCK_REALTIME, &ts);
1652 return ts.tv_sec + ts.tv_nsec * 1e-9; 2049 return EV_TS_GET (ts);
1653 } 2050 }
1654#endif 2051#endif
1655 2052
2053 {
1656 struct timeval tv; 2054 struct timeval tv;
1657 gettimeofday (&tv, 0); 2055 gettimeofday (&tv, 0);
1658 return tv.tv_sec + tv.tv_usec * 1e-6; 2056 return EV_TV_GET (tv);
2057 }
1659} 2058}
1660#endif 2059#endif
1661 2060
1662inline_size ev_tstamp 2061inline_size ev_tstamp
1663get_clock (void) 2062get_clock (void)
1664{ 2063{
1665#if EV_USE_MONOTONIC 2064#if EV_USE_MONOTONIC
1666 if (expect_true (have_monotonic)) 2065 if (ecb_expect_true (have_monotonic))
1667 { 2066 {
1668 struct timespec ts; 2067 struct timespec ts;
1669 clock_gettime (CLOCK_MONOTONIC, &ts); 2068 clock_gettime (CLOCK_MONOTONIC, &ts);
1670 return ts.tv_sec + ts.tv_nsec * 1e-9; 2069 return EV_TS_GET (ts);
1671 } 2070 }
1672#endif 2071#endif
1673 2072
1674 return ev_time (); 2073 return ev_time ();
1675} 2074}
1676 2075
1677#if EV_MULTIPLICITY 2076#if EV_MULTIPLICITY
1678ev_tstamp 2077ev_tstamp
1679ev_now (EV_P) EV_THROW 2078ev_now (EV_P) EV_NOEXCEPT
1680{ 2079{
1681 return ev_rt_now; 2080 return ev_rt_now;
1682} 2081}
1683#endif 2082#endif
1684 2083
1685void 2084void
1686ev_sleep (ev_tstamp delay) EV_THROW 2085ev_sleep (ev_tstamp delay) EV_NOEXCEPT
1687{ 2086{
1688 if (delay > 0.) 2087 if (delay > EV_TS_CONST (0.))
1689 { 2088 {
1690#if EV_USE_NANOSLEEP 2089#if EV_USE_NANOSLEEP
1691 struct timespec ts; 2090 struct timespec ts;
1692 2091
1693 EV_TS_SET (ts, delay); 2092 EV_TS_SET (ts, delay);
1694 nanosleep (&ts, 0); 2093 nanosleep (&ts, 0);
1695#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) */
1696 Sleep ((unsigned long)(delay * 1e3)); 2097 Sleep ((unsigned long)(EV_TS_TO_MSEC (delay)));
1697#else 2098#else
1698 struct timeval tv; 2099 struct timeval tv;
1699 2100
1700 /* 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 */
1701 /* something not guaranteed by newer posix versions, but guaranteed */ 2102 /* something not guaranteed by newer posix versions, but guaranteed */
… …
1731 } 2132 }
1732 2133
1733 return ncur; 2134 return ncur;
1734} 2135}
1735 2136
1736static void * noinline ecb_cold 2137ecb_noinline ecb_cold
2138static void *
1737array_realloc (int elem, void *base, int *cur, int cnt) 2139array_realloc (int elem, void *base, int *cur, int cnt)
1738{ 2140{
1739 *cur = array_nextsize (elem, *cur, cnt); 2141 *cur = array_nextsize (elem, *cur, cnt);
1740 return ev_realloc (base, elem * *cur); 2142 return ev_realloc (base, elem * *cur);
1741} 2143}
1742 2144
2145#define array_needsize_noinit(base,offset,count)
2146
1743#define array_init_zero(base,count) \ 2147#define array_needsize_zerofill(base,offset,count) \
1744 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2148 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
1745 2149
1746#define array_needsize(type,base,cur,cnt,init) \ 2150#define array_needsize(type,base,cur,cnt,init) \
1747 if (expect_false ((cnt) > (cur))) \ 2151 if (ecb_expect_false ((cnt) > (cur))) \
1748 { \ 2152 { \
1749 int ecb_unused ocur_ = (cur); \ 2153 ecb_unused int ocur_ = (cur); \
1750 (base) = (type *)array_realloc \ 2154 (base) = (type *)array_realloc \
1751 (sizeof (type), (base), &(cur), (cnt)); \ 2155 (sizeof (type), (base), &(cur), (cnt)); \
1752 init ((base) + (ocur_), (cur) - ocur_); \ 2156 init ((base), ocur_, ((cur) - ocur_)); \
1753 } 2157 }
1754 2158
1755#if 0 2159#if 0
1756#define array_slim(type,stem) \ 2160#define array_slim(type,stem) \
1757 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2161 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
1766 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
1767 2171
1768/*****************************************************************************/ 2172/*****************************************************************************/
1769 2173
1770/* dummy callback for pending events */ 2174/* dummy callback for pending events */
1771static void noinline 2175ecb_noinline
2176static void
1772pendingcb (EV_P_ ev_prepare *w, int revents) 2177pendingcb (EV_P_ ev_prepare *w, int revents)
1773{ 2178{
1774} 2179}
1775 2180
1776void noinline 2181ecb_noinline
2182void
1777ev_feed_event (EV_P_ void *w, int revents) EV_THROW 2183ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
1778{ 2184{
1779 W w_ = (W)w; 2185 W w_ = (W)w;
1780 int pri = ABSPRI (w_); 2186 int pri = ABSPRI (w_);
1781 2187
1782 if (expect_false (w_->pending)) 2188 if (ecb_expect_false (w_->pending))
1783 pendings [pri][w_->pending - 1].events |= revents; 2189 pendings [pri][w_->pending - 1].events |= revents;
1784 else 2190 else
1785 { 2191 {
1786 w_->pending = ++pendingcnt [pri]; 2192 w_->pending = ++pendingcnt [pri];
1787 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2193 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
1788 pendings [pri][w_->pending - 1].w = w_; 2194 pendings [pri][w_->pending - 1].w = w_;
1789 pendings [pri][w_->pending - 1].events = revents; 2195 pendings [pri][w_->pending - 1].events = revents;
1790 } 2196 }
1791 2197
1792 pendingpri = NUMPRI - 1; 2198 pendingpri = NUMPRI - 1;
1793} 2199}
1794 2200
1795inline_speed void 2201inline_speed void
1796feed_reverse (EV_P_ W w) 2202feed_reverse (EV_P_ W w)
1797{ 2203{
1798 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2204 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
1799 rfeeds [rfeedcnt++] = w; 2205 rfeeds [rfeedcnt++] = w;
1800} 2206}
1801 2207
1802inline_size void 2208inline_size void
1803feed_reverse_done (EV_P_ int revents) 2209feed_reverse_done (EV_P_ int revents)
… …
1838inline_speed void 2244inline_speed void
1839fd_event (EV_P_ int fd, int revents) 2245fd_event (EV_P_ int fd, int revents)
1840{ 2246{
1841 ANFD *anfd = anfds + fd; 2247 ANFD *anfd = anfds + fd;
1842 2248
1843 if (expect_true (!anfd->reify)) 2249 if (ecb_expect_true (!anfd->reify))
1844 fd_event_nocheck (EV_A_ fd, revents); 2250 fd_event_nocheck (EV_A_ fd, revents);
1845} 2251}
1846 2252
1847void 2253void
1848ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW 2254ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
1849{ 2255{
1850 if (fd >= 0 && fd < anfdmax) 2256 if (fd >= 0 && fd < anfdmax)
1851 fd_event_nocheck (EV_A_ fd, revents); 2257 fd_event_nocheck (EV_A_ fd, revents);
1852} 2258}
1853 2259
… …
1856inline_size void 2262inline_size void
1857fd_reify (EV_P) 2263fd_reify (EV_P)
1858{ 2264{
1859 int i; 2265 int i;
1860 2266
2267 /* most backends do not modify the fdchanges list in backend_modfiy.
2268 * except io_uring, which has fixed-size buffers which might force us
2269 * to handle events in backend_modify, causing fdchangesd to be amended,
2270 * which could result in an endless loop.
2271 * to avoid this, we do not dynamically handle fds that were added
2272 * during fd_reify. that menas thast for those backends, fdchangecnt
2273 * might be non-zero during poll, which must cause them to not block.
2274 * to not put too much of a burden on other backends, this detail
2275 * needs to be handled in the backend.
2276 */
2277 int changecnt = fdchangecnt;
2278
1861#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 2279#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1862 for (i = 0; i < fdchangecnt; ++i) 2280 for (i = 0; i < changecnt; ++i)
1863 { 2281 {
1864 int fd = fdchanges [i]; 2282 int fd = fdchanges [i];
1865 ANFD *anfd = anfds + fd; 2283 ANFD *anfd = anfds + fd;
1866 2284
1867 if (anfd->reify & EV__IOFDSET && anfd->head) 2285 if (anfd->reify & EV__IOFDSET && anfd->head)
… …
1881 } 2299 }
1882 } 2300 }
1883 } 2301 }
1884#endif 2302#endif
1885 2303
1886 for (i = 0; i < fdchangecnt; ++i) 2304 for (i = 0; i < changecnt; ++i)
1887 { 2305 {
1888 int fd = fdchanges [i]; 2306 int fd = fdchanges [i];
1889 ANFD *anfd = anfds + fd; 2307 ANFD *anfd = anfds + fd;
1890 ev_io *w; 2308 ev_io *w;
1891 2309
1892 unsigned char o_events = anfd->events; 2310 unsigned char o_events = anfd->events;
1893 unsigned char o_reify = anfd->reify; 2311 unsigned char o_reify = anfd->reify;
1894 2312
1895 anfd->reify = 0; 2313 anfd->reify = 0;
1896 2314
1897 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 2315 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
1898 { 2316 {
1899 anfd->events = 0; 2317 anfd->events = 0;
1900 2318
1901 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2319 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1902 anfd->events |= (unsigned char)w->events; 2320 anfd->events |= (unsigned char)w->events;
… …
1907 2325
1908 if (o_reify & EV__IOFDSET) 2326 if (o_reify & EV__IOFDSET)
1909 backend_modify (EV_A_ fd, o_events, anfd->events); 2327 backend_modify (EV_A_ fd, o_events, anfd->events);
1910 } 2328 }
1911 2329
2330 /* normally, fdchangecnt hasn't changed. if it has, then new fds have been added.
2331 * this is a rare case (see beginning comment in this function), so we copy them to the
2332 * front and hope the backend handles this case.
2333 */
2334 if (ecb_expect_false (fdchangecnt != changecnt))
2335 memmove (fdchanges, fdchanges + changecnt, (fdchangecnt - changecnt) * sizeof (*fdchanges));
2336
1912 fdchangecnt = 0; 2337 fdchangecnt -= changecnt;
1913} 2338}
1914 2339
1915/* something about the given fd changed */ 2340/* something about the given fd changed */
1916inline_size void 2341inline_size
2342void
1917fd_change (EV_P_ int fd, int flags) 2343fd_change (EV_P_ int fd, int flags)
1918{ 2344{
1919 unsigned char reify = anfds [fd].reify; 2345 unsigned char reify = anfds [fd].reify;
1920 anfds [fd].reify |= flags; 2346 anfds [fd].reify |= flags;
1921 2347
1922 if (expect_true (!reify)) 2348 if (ecb_expect_true (!reify))
1923 { 2349 {
1924 ++fdchangecnt; 2350 ++fdchangecnt;
1925 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2351 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
1926 fdchanges [fdchangecnt - 1] = fd; 2352 fdchanges [fdchangecnt - 1] = fd;
1927 } 2353 }
1928} 2354}
1929 2355
1930/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2356/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1931inline_speed void ecb_cold 2357inline_speed ecb_cold void
1932fd_kill (EV_P_ int fd) 2358fd_kill (EV_P_ int fd)
1933{ 2359{
1934 ev_io *w; 2360 ev_io *w;
1935 2361
1936 while ((w = (ev_io *)anfds [fd].head)) 2362 while ((w = (ev_io *)anfds [fd].head))
… …
1939 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2365 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1940 } 2366 }
1941} 2367}
1942 2368
1943/* check whether the given fd is actually valid, for error recovery */ 2369/* check whether the given fd is actually valid, for error recovery */
1944inline_size int ecb_cold 2370inline_size ecb_cold int
1945fd_valid (int fd) 2371fd_valid (int fd)
1946{ 2372{
1947#ifdef _WIN32 2373#ifdef _WIN32
1948 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2374 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1949#else 2375#else
1950 return fcntl (fd, F_GETFD) != -1; 2376 return fcntl (fd, F_GETFD) != -1;
1951#endif 2377#endif
1952} 2378}
1953 2379
1954/* called on EBADF to verify fds */ 2380/* called on EBADF to verify fds */
1955static void noinline ecb_cold 2381ecb_noinline ecb_cold
2382static void
1956fd_ebadf (EV_P) 2383fd_ebadf (EV_P)
1957{ 2384{
1958 int fd; 2385 int fd;
1959 2386
1960 for (fd = 0; fd < anfdmax; ++fd) 2387 for (fd = 0; fd < anfdmax; ++fd)
… …
1962 if (!fd_valid (fd) && errno == EBADF) 2389 if (!fd_valid (fd) && errno == EBADF)
1963 fd_kill (EV_A_ fd); 2390 fd_kill (EV_A_ fd);
1964} 2391}
1965 2392
1966/* called on ENOMEM in select/poll to kill some fds and retry */ 2393/* called on ENOMEM in select/poll to kill some fds and retry */
1967static void noinline ecb_cold 2394ecb_noinline ecb_cold
2395static void
1968fd_enomem (EV_P) 2396fd_enomem (EV_P)
1969{ 2397{
1970 int fd; 2398 int fd;
1971 2399
1972 for (fd = anfdmax; fd--; ) 2400 for (fd = anfdmax; fd--; )
… …
1976 break; 2404 break;
1977 } 2405 }
1978} 2406}
1979 2407
1980/* usually called after fork if backend needs to re-arm all fds from scratch */ 2408/* usually called after fork if backend needs to re-arm all fds from scratch */
1981static void noinline 2409ecb_noinline
2410static void
1982fd_rearm_all (EV_P) 2411fd_rearm_all (EV_P)
1983{ 2412{
1984 int fd; 2413 int fd;
1985 2414
1986 for (fd = 0; fd < anfdmax; ++fd) 2415 for (fd = 0; fd < anfdmax; ++fd)
… …
2039 ev_tstamp minat; 2468 ev_tstamp minat;
2040 ANHE *minpos; 2469 ANHE *minpos;
2041 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2470 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
2042 2471
2043 /* find minimum child */ 2472 /* find minimum child */
2044 if (expect_true (pos + DHEAP - 1 < E)) 2473 if (ecb_expect_true (pos + DHEAP - 1 < E))
2045 { 2474 {
2046 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2475 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
2047 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2476 if ( minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
2048 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2477 if ( minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
2049 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2478 if ( minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
2050 } 2479 }
2051 else if (pos < E) 2480 else if (pos < E)
2052 { 2481 {
2053 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2482 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
2054 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2483 if (pos + 1 < E && minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
2055 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2484 if (pos + 2 < E && minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
2056 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2485 if (pos + 3 < E && minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
2057 } 2486 }
2058 else 2487 else
2059 break; 2488 break;
2060 2489
2061 if (ANHE_at (he) <= minat) 2490 if (ANHE_at (he) <= minat)
… …
2069 2498
2070 heap [k] = he; 2499 heap [k] = he;
2071 ev_active (ANHE_w (he)) = k; 2500 ev_active (ANHE_w (he)) = k;
2072} 2501}
2073 2502
2074#else /* 4HEAP */ 2503#else /* not 4HEAP */
2075 2504
2076#define HEAP0 1 2505#define HEAP0 1
2077#define HPARENT(k) ((k) >> 1) 2506#define HPARENT(k) ((k) >> 1)
2078#define UPHEAP_DONE(p,k) (!(p)) 2507#define UPHEAP_DONE(p,k) (!(p))
2079 2508
… …
2151 upheap (heap, i + HEAP0); 2580 upheap (heap, i + HEAP0);
2152} 2581}
2153 2582
2154/*****************************************************************************/ 2583/*****************************************************************************/
2155 2584
2156/* associate signal watchers to a signal signal */ 2585/* associate signal watchers to a signal */
2157typedef struct 2586typedef struct
2158{ 2587{
2159 EV_ATOMIC_T pending; 2588 EV_ATOMIC_T pending;
2160#if EV_MULTIPLICITY 2589#if EV_MULTIPLICITY
2161 EV_P; 2590 EV_P;
… …
2167 2596
2168/*****************************************************************************/ 2597/*****************************************************************************/
2169 2598
2170#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2599#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2171 2600
2172static void noinline ecb_cold 2601ecb_noinline ecb_cold
2602static void
2173evpipe_init (EV_P) 2603evpipe_init (EV_P)
2174{ 2604{
2175 if (!ev_is_active (&pipe_w)) 2605 if (!ev_is_active (&pipe_w))
2176 { 2606 {
2177 int fds [2]; 2607 int fds [2];
… …
2217inline_speed void 2647inline_speed void
2218evpipe_write (EV_P_ EV_ATOMIC_T *flag) 2648evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2219{ 2649{
2220 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */ 2650 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2221 2651
2222 if (expect_true (*flag)) 2652 if (ecb_expect_true (*flag))
2223 return; 2653 return;
2224 2654
2225 *flag = 1; 2655 *flag = 1;
2226 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */ 2656 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2227 2657
… …
2248#endif 2678#endif
2249 { 2679 {
2250#ifdef _WIN32 2680#ifdef _WIN32
2251 WSABUF buf; 2681 WSABUF buf;
2252 DWORD sent; 2682 DWORD sent;
2253 buf.buf = &buf; 2683 buf.buf = (char *)&buf;
2254 buf.len = 1; 2684 buf.len = 1;
2255 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0); 2685 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2256#else 2686#else
2257 write (evpipe [1], &(evpipe [1]), 1); 2687 write (evpipe [1], &(evpipe [1]), 1);
2258#endif 2688#endif
… …
2304 sig_pending = 0; 2734 sig_pending = 0;
2305 2735
2306 ECB_MEMORY_FENCE; 2736 ECB_MEMORY_FENCE;
2307 2737
2308 for (i = EV_NSIG - 1; i--; ) 2738 for (i = EV_NSIG - 1; i--; )
2309 if (expect_false (signals [i].pending)) 2739 if (ecb_expect_false (signals [i].pending))
2310 ev_feed_signal_event (EV_A_ i + 1); 2740 ev_feed_signal_event (EV_A_ i + 1);
2311 } 2741 }
2312#endif 2742#endif
2313 2743
2314#if EV_ASYNC_ENABLE 2744#if EV_ASYNC_ENABLE
… …
2330} 2760}
2331 2761
2332/*****************************************************************************/ 2762/*****************************************************************************/
2333 2763
2334void 2764void
2335ev_feed_signal (int signum) EV_THROW 2765ev_feed_signal (int signum) EV_NOEXCEPT
2336{ 2766{
2337#if EV_MULTIPLICITY 2767#if EV_MULTIPLICITY
2338 EV_P; 2768 EV_P;
2339 ECB_MEMORY_FENCE_ACQUIRE; 2769 ECB_MEMORY_FENCE_ACQUIRE;
2340 EV_A = signals [signum - 1].loop; 2770 EV_A = signals [signum - 1].loop;
… …
2355#endif 2785#endif
2356 2786
2357 ev_feed_signal (signum); 2787 ev_feed_signal (signum);
2358} 2788}
2359 2789
2360void noinline 2790ecb_noinline
2791void
2361ev_feed_signal_event (EV_P_ int signum) EV_THROW 2792ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
2362{ 2793{
2363 WL w; 2794 WL w;
2364 2795
2365 if (expect_false (signum <= 0 || signum >= EV_NSIG)) 2796 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
2366 return; 2797 return;
2367 2798
2368 --signum; 2799 --signum;
2369 2800
2370#if EV_MULTIPLICITY 2801#if EV_MULTIPLICITY
2371 /* it is permissible to try to feed a signal to the wrong loop */ 2802 /* it is permissible to try to feed a signal to the wrong loop */
2372 /* or, likely more useful, feeding a signal nobody is waiting for */ 2803 /* or, likely more useful, feeding a signal nobody is waiting for */
2373 2804
2374 if (expect_false (signals [signum].loop != EV_A)) 2805 if (ecb_expect_false (signals [signum].loop != EV_A))
2375 return; 2806 return;
2376#endif 2807#endif
2377 2808
2378 signals [signum].pending = 0; 2809 signals [signum].pending = 0;
2379 ECB_MEMORY_FENCE_RELEASE; 2810 ECB_MEMORY_FENCE_RELEASE;
… …
2463 2894
2464#endif 2895#endif
2465 2896
2466/*****************************************************************************/ 2897/*****************************************************************************/
2467 2898
2899#if EV_USE_TIMERFD
2900
2901static void periodics_reschedule (EV_P);
2902
2903static void
2904timerfdcb (EV_P_ ev_io *iow, int revents)
2905{
2906 struct itimerspec its = { 0 };
2907
2908 /* since we can't easily come zup with a (portable) maximum value of time_t,
2909 * we wake up once per month, which hopefully is rare enough to not
2910 * be a problem. */
2911 its.it_value.tv_sec = ev_rt_now + 86400 * 30;
2912 timerfd_settime (timerfd, TFD_TIMER_ABSTIME | TFD_TIMER_CANCEL_ON_SET, &its, 0);
2913
2914 ev_rt_now = ev_time ();
2915 /* periodics_reschedule only needs ev_rt_now */
2916 /* but maybe in the future we want the full treatment. */
2917 /*
2918 now_floor = EV_TS_CONST (0.);
2919 time_update (EV_A_ EV_TSTAMP_HUGE);
2920 */
2921 periodics_reschedule (EV_A);
2922}
2923
2924ecb_noinline ecb_cold
2925static void
2926evtimerfd_init (EV_P)
2927{
2928 if (!ev_is_active (&timerfd_w))
2929 {
2930 timerfd = timerfd_create (CLOCK_REALTIME, TFD_NONBLOCK | TFD_CLOEXEC);
2931
2932 if (timerfd >= 0)
2933 {
2934 fd_intern (timerfd); /* just to be sure */
2935
2936 ev_io_init (&timerfd_w, timerfdcb, timerfd, EV_READ);
2937 ev_set_priority (&timerfd_w, EV_MINPRI);
2938 ev_io_start (EV_A_ &timerfd_w);
2939 ev_unref (EV_A); /* watcher should not keep loop alive */
2940
2941 /* (re-) arm timer */
2942 timerfdcb (EV_A_ 0, 0);
2943 }
2944 }
2945}
2946
2947#endif
2948
2949/*****************************************************************************/
2950
2468#if EV_USE_IOCP 2951#if EV_USE_IOCP
2469# include "ev_iocp.c" 2952# include "ev_iocp.c"
2470#endif 2953#endif
2471#if EV_USE_PORT 2954#if EV_USE_PORT
2472# include "ev_port.c" 2955# include "ev_port.c"
… …
2475# include "ev_kqueue.c" 2958# include "ev_kqueue.c"
2476#endif 2959#endif
2477#if EV_USE_EPOLL 2960#if EV_USE_EPOLL
2478# include "ev_epoll.c" 2961# include "ev_epoll.c"
2479#endif 2962#endif
2963#if EV_USE_LINUXAIO
2964# include "ev_linuxaio.c"
2965#endif
2966#if EV_USE_IOURING
2967# include "ev_iouring.c"
2968#endif
2480#if EV_USE_POLL 2969#if EV_USE_POLL
2481# include "ev_poll.c" 2970# include "ev_poll.c"
2482#endif 2971#endif
2483#if EV_USE_SELECT 2972#if EV_USE_SELECT
2484# include "ev_select.c" 2973# include "ev_select.c"
2485#endif 2974#endif
2486 2975
2487int ecb_cold 2976ecb_cold int
2488ev_version_major (void) EV_THROW 2977ev_version_major (void) EV_NOEXCEPT
2489{ 2978{
2490 return EV_VERSION_MAJOR; 2979 return EV_VERSION_MAJOR;
2491} 2980}
2492 2981
2493int ecb_cold 2982ecb_cold int
2494ev_version_minor (void) EV_THROW 2983ev_version_minor (void) EV_NOEXCEPT
2495{ 2984{
2496 return EV_VERSION_MINOR; 2985 return EV_VERSION_MINOR;
2497} 2986}
2498 2987
2499/* return true if we are running with elevated privileges and should ignore env variables */ 2988/* return true if we are running with elevated privileges and should ignore env variables */
2500int inline_size ecb_cold 2989inline_size ecb_cold int
2501enable_secure (void) 2990enable_secure (void)
2502{ 2991{
2503#ifdef _WIN32 2992#ifdef _WIN32
2504 return 0; 2993 return 0;
2505#else 2994#else
2506 return getuid () != geteuid () 2995 return getuid () != geteuid ()
2507 || getgid () != getegid (); 2996 || getgid () != getegid ();
2508#endif 2997#endif
2509} 2998}
2510 2999
2511unsigned int ecb_cold 3000ecb_cold
3001unsigned int
2512ev_supported_backends (void) EV_THROW 3002ev_supported_backends (void) EV_NOEXCEPT
2513{ 3003{
2514 unsigned int flags = 0; 3004 unsigned int flags = 0;
2515 3005
2516 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 3006 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2517 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 3007 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
2518 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 3008 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2519 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 3009 if (EV_USE_LINUXAIO ) flags |= EVBACKEND_LINUXAIO;
2520 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 3010 if (EV_USE_IOURING && ev_linux_version () >= 0x050601) flags |= EVBACKEND_IOURING; /* 5.6.1+ */
2521 3011 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
3012 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
3013
2522 return flags; 3014 return flags;
2523} 3015}
2524 3016
2525unsigned int ecb_cold 3017ecb_cold
3018unsigned int
2526ev_recommended_backends (void) EV_THROW 3019ev_recommended_backends (void) EV_NOEXCEPT
2527{ 3020{
2528 unsigned int flags = ev_supported_backends (); 3021 unsigned int flags = ev_supported_backends ();
2529 3022
2530#ifndef __NetBSD__ 3023#ifndef __NetBSD__
2531 /* kqueue is borked on everything but netbsd apparently */ 3024 /* kqueue is borked on everything but netbsd apparently */
… …
2539#endif 3032#endif
2540#ifdef __FreeBSD__ 3033#ifdef __FreeBSD__
2541 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ 3034 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2542#endif 3035#endif
2543 3036
3037 /* TODO: linuxaio is very experimental */
3038#if !EV_RECOMMEND_LINUXAIO
3039 flags &= ~EVBACKEND_LINUXAIO;
3040#endif
3041 /* TODO: linuxaio is super experimental */
3042#if !EV_RECOMMEND_IOURING
3043 flags &= ~EVBACKEND_IOURING;
3044#endif
3045
2544 return flags; 3046 return flags;
2545} 3047}
2546 3048
2547unsigned int ecb_cold 3049ecb_cold
3050unsigned int
2548ev_embeddable_backends (void) EV_THROW 3051ev_embeddable_backends (void) EV_NOEXCEPT
2549{ 3052{
2550 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 3053 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT | EVBACKEND_IOURING;
2551 3054
2552 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 3055 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2553 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 3056 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2554 flags &= ~EVBACKEND_EPOLL; 3057 flags &= ~EVBACKEND_EPOLL;
2555 3058
3059 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
3060
2556 return flags; 3061 return flags;
2557} 3062}
2558 3063
2559unsigned int 3064unsigned int
2560ev_backend (EV_P) EV_THROW 3065ev_backend (EV_P) EV_NOEXCEPT
2561{ 3066{
2562 return backend; 3067 return backend;
2563} 3068}
2564 3069
2565#if EV_FEATURE_API 3070#if EV_FEATURE_API
2566unsigned int 3071unsigned int
2567ev_iteration (EV_P) EV_THROW 3072ev_iteration (EV_P) EV_NOEXCEPT
2568{ 3073{
2569 return loop_count; 3074 return loop_count;
2570} 3075}
2571 3076
2572unsigned int 3077unsigned int
2573ev_depth (EV_P) EV_THROW 3078ev_depth (EV_P) EV_NOEXCEPT
2574{ 3079{
2575 return loop_depth; 3080 return loop_depth;
2576} 3081}
2577 3082
2578void 3083void
2579ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW 3084ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2580{ 3085{
2581 io_blocktime = interval; 3086 io_blocktime = interval;
2582} 3087}
2583 3088
2584void 3089void
2585ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW 3090ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2586{ 3091{
2587 timeout_blocktime = interval; 3092 timeout_blocktime = interval;
2588} 3093}
2589 3094
2590void 3095void
2591ev_set_userdata (EV_P_ void *data) EV_THROW 3096ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2592{ 3097{
2593 userdata = data; 3098 userdata = data;
2594} 3099}
2595 3100
2596void * 3101void *
2597ev_userdata (EV_P) EV_THROW 3102ev_userdata (EV_P) EV_NOEXCEPT
2598{ 3103{
2599 return userdata; 3104 return userdata;
2600} 3105}
2601 3106
2602void 3107void
2603ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW 3108ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
2604{ 3109{
2605 invoke_cb = invoke_pending_cb; 3110 invoke_cb = invoke_pending_cb;
2606} 3111}
2607 3112
2608void 3113void
2609ev_set_loop_release_cb (EV_P_ ev_loop_callback_nothrow release, ev_loop_callback_nothrow acquire) EV_THROW 3114ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
2610{ 3115{
2611 release_cb = release; 3116 release_cb = release;
2612 acquire_cb = acquire; 3117 acquire_cb = acquire;
2613} 3118}
2614#endif 3119#endif
2615 3120
2616/* initialise a loop structure, must be zero-initialised */ 3121/* initialise a loop structure, must be zero-initialised */
2617static void noinline ecb_cold 3122ecb_noinline ecb_cold
3123static void
2618loop_init (EV_P_ unsigned int flags) EV_THROW 3124loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
2619{ 3125{
2620 if (!backend) 3126 if (!backend)
2621 { 3127 {
2622 origflags = flags; 3128 origflags = flags;
2623 3129
… …
2676 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3182 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2677#endif 3183#endif
2678#if EV_USE_SIGNALFD 3184#if EV_USE_SIGNALFD
2679 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 3185 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2680#endif 3186#endif
3187#if EV_USE_TIMERFD
3188 timerfd = flags & EVFLAG_NOTIMERFD ? -1 : -2;
3189#endif
2681 3190
2682 if (!(flags & EVBACKEND_MASK)) 3191 if (!(flags & EVBACKEND_MASK))
2683 flags |= ev_recommended_backends (); 3192 flags |= ev_recommended_backends ();
2684 3193
2685#if EV_USE_IOCP 3194#if EV_USE_IOCP
2686 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 3195 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2687#endif 3196#endif
2688#if EV_USE_PORT 3197#if EV_USE_PORT
2689 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3198 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
2690#endif 3199#endif
2691#if EV_USE_KQUEUE 3200#if EV_USE_KQUEUE
2692 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 3201 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
3202#endif
3203#if EV_USE_IOURING
3204 if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
3205#endif
3206#if EV_USE_LINUXAIO
3207 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
2693#endif 3208#endif
2694#if EV_USE_EPOLL 3209#if EV_USE_EPOLL
2695 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3210 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
2696#endif 3211#endif
2697#if EV_USE_POLL 3212#if EV_USE_POLL
2698 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3213 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
2699#endif 3214#endif
2700#if EV_USE_SELECT 3215#if EV_USE_SELECT
2701 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3216 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
2702#endif 3217#endif
2703 3218
2704 ev_prepare_init (&pending_w, pendingcb); 3219 ev_prepare_init (&pending_w, pendingcb);
2705 3220
2706#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3221#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
2709#endif 3224#endif
2710 } 3225 }
2711} 3226}
2712 3227
2713/* free up a loop structure */ 3228/* free up a loop structure */
2714void ecb_cold 3229ecb_cold
3230void
2715ev_loop_destroy (EV_P) 3231ev_loop_destroy (EV_P)
2716{ 3232{
2717 int i; 3233 int i;
2718 3234
2719#if EV_MULTIPLICITY 3235#if EV_MULTIPLICITY
… …
2722 return; 3238 return;
2723#endif 3239#endif
2724 3240
2725#if EV_CLEANUP_ENABLE 3241#if EV_CLEANUP_ENABLE
2726 /* queue cleanup watchers (and execute them) */ 3242 /* queue cleanup watchers (and execute them) */
2727 if (expect_false (cleanupcnt)) 3243 if (ecb_expect_false (cleanupcnt))
2728 { 3244 {
2729 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); 3245 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2730 EV_INVOKE_PENDING; 3246 EV_INVOKE_PENDING;
2731 } 3247 }
2732#endif 3248#endif
… …
2751#if EV_USE_SIGNALFD 3267#if EV_USE_SIGNALFD
2752 if (ev_is_active (&sigfd_w)) 3268 if (ev_is_active (&sigfd_w))
2753 close (sigfd); 3269 close (sigfd);
2754#endif 3270#endif
2755 3271
3272#if EV_USE_TIMERFD
3273 if (ev_is_active (&timerfd_w))
3274 close (timerfd);
3275#endif
3276
2756#if EV_USE_INOTIFY 3277#if EV_USE_INOTIFY
2757 if (fs_fd >= 0) 3278 if (fs_fd >= 0)
2758 close (fs_fd); 3279 close (fs_fd);
2759#endif 3280#endif
2760 3281
2761 if (backend_fd >= 0) 3282 if (backend_fd >= 0)
2762 close (backend_fd); 3283 close (backend_fd);
2763 3284
2764#if EV_USE_IOCP 3285#if EV_USE_IOCP
2765 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3286 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2766#endif 3287#endif
2767#if EV_USE_PORT 3288#if EV_USE_PORT
2768 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3289 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
2769#endif 3290#endif
2770#if EV_USE_KQUEUE 3291#if EV_USE_KQUEUE
2771 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3292 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3293#endif
3294#if EV_USE_IOURING
3295 if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
3296#endif
3297#if EV_USE_LINUXAIO
3298 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
2772#endif 3299#endif
2773#if EV_USE_EPOLL 3300#if EV_USE_EPOLL
2774 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3301 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
2775#endif 3302#endif
2776#if EV_USE_POLL 3303#if EV_USE_POLL
2777 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3304 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
2778#endif 3305#endif
2779#if EV_USE_SELECT 3306#if EV_USE_SELECT
2780 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3307 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
2781#endif 3308#endif
2782 3309
2783 for (i = NUMPRI; i--; ) 3310 for (i = NUMPRI; i--; )
2784 { 3311 {
2785 array_free (pending, [i]); 3312 array_free (pending, [i]);
… …
2827 3354
2828inline_size void 3355inline_size void
2829loop_fork (EV_P) 3356loop_fork (EV_P)
2830{ 3357{
2831#if EV_USE_PORT 3358#if EV_USE_PORT
2832 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3359 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
2833#endif 3360#endif
2834#if EV_USE_KQUEUE 3361#if EV_USE_KQUEUE
2835 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3362 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3363#endif
3364#if EV_USE_IOURING
3365 if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
3366#endif
3367#if EV_USE_LINUXAIO
3368 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
2836#endif 3369#endif
2837#if EV_USE_EPOLL 3370#if EV_USE_EPOLL
2838 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3371 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
2839#endif 3372#endif
2840#if EV_USE_INOTIFY 3373#if EV_USE_INOTIFY
2841 infy_fork (EV_A); 3374 infy_fork (EV_A);
2842#endif 3375#endif
2843 3376
3377 if (postfork != 2)
3378 {
3379 #if EV_USE_SIGNALFD
3380 /* surprisingly, nothing needs to be done for signalfd, accoridng to docs, it does the right thing on fork */
3381 #endif
3382
3383 #if EV_USE_TIMERFD
3384 if (ev_is_active (&timerfd_w))
3385 {
3386 ev_ref (EV_A);
3387 ev_io_stop (EV_A_ &timerfd_w);
3388
3389 close (timerfd);
3390 timerfd = -2;
3391
3392 evtimerfd_init (EV_A);
3393 /* reschedule periodics, in case we missed something */
3394 ev_feed_event (EV_A_ &timerfd_w, EV_CUSTOM);
3395 }
3396 #endif
3397
2844#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3398 #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2845 if (ev_is_active (&pipe_w)) 3399 if (ev_is_active (&pipe_w))
2846 { 3400 {
2847 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 3401 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2848 3402
2849 ev_ref (EV_A); 3403 ev_ref (EV_A);
2850 ev_io_stop (EV_A_ &pipe_w); 3404 ev_io_stop (EV_A_ &pipe_w);
2851 3405
2852 if (evpipe [0] >= 0) 3406 if (evpipe [0] >= 0)
2853 EV_WIN32_CLOSE_FD (evpipe [0]); 3407 EV_WIN32_CLOSE_FD (evpipe [0]);
2854 3408
2855 evpipe_init (EV_A); 3409 evpipe_init (EV_A);
2856 /* iterate over everything, in case we missed something before */ 3410 /* iterate over everything, in case we missed something before */
2857 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3411 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3412 }
3413 #endif
2858 } 3414 }
2859#endif
2860 3415
2861 postfork = 0; 3416 postfork = 0;
2862} 3417}
2863 3418
2864#if EV_MULTIPLICITY 3419#if EV_MULTIPLICITY
2865 3420
3421ecb_cold
2866struct ev_loop * ecb_cold 3422struct ev_loop *
2867ev_loop_new (unsigned int flags) EV_THROW 3423ev_loop_new (unsigned int flags) EV_NOEXCEPT
2868{ 3424{
2869 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3425 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2870 3426
2871 memset (EV_A, 0, sizeof (struct ev_loop)); 3427 memset (EV_A, 0, sizeof (struct ev_loop));
2872 loop_init (EV_A_ flags); 3428 loop_init (EV_A_ flags);
… …
2879} 3435}
2880 3436
2881#endif /* multiplicity */ 3437#endif /* multiplicity */
2882 3438
2883#if EV_VERIFY 3439#if EV_VERIFY
2884static void noinline ecb_cold 3440ecb_noinline ecb_cold
3441static void
2885verify_watcher (EV_P_ W w) 3442verify_watcher (EV_P_ W w)
2886{ 3443{
2887 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3444 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2888 3445
2889 if (w->pending) 3446 if (w->pending)
2890 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3447 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2891} 3448}
2892 3449
2893static void noinline ecb_cold 3450ecb_noinline ecb_cold
3451static void
2894verify_heap (EV_P_ ANHE *heap, int N) 3452verify_heap (EV_P_ ANHE *heap, int N)
2895{ 3453{
2896 int i; 3454 int i;
2897 3455
2898 for (i = HEAP0; i < N + HEAP0; ++i) 3456 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2903 3461
2904 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3462 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2905 } 3463 }
2906} 3464}
2907 3465
2908static void noinline ecb_cold 3466ecb_noinline ecb_cold
3467static void
2909array_verify (EV_P_ W *ws, int cnt) 3468array_verify (EV_P_ W *ws, int cnt)
2910{ 3469{
2911 while (cnt--) 3470 while (cnt--)
2912 { 3471 {
2913 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3472 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2916} 3475}
2917#endif 3476#endif
2918 3477
2919#if EV_FEATURE_API 3478#if EV_FEATURE_API
2920void ecb_cold 3479void ecb_cold
2921ev_verify (EV_P) EV_THROW 3480ev_verify (EV_P) EV_NOEXCEPT
2922{ 3481{
2923#if EV_VERIFY 3482#if EV_VERIFY
2924 int i; 3483 int i;
2925 WL w, w2; 3484 WL w, w2;
2926 3485
… …
3002#endif 3561#endif
3003} 3562}
3004#endif 3563#endif
3005 3564
3006#if EV_MULTIPLICITY 3565#if EV_MULTIPLICITY
3566ecb_cold
3007struct ev_loop * ecb_cold 3567struct ev_loop *
3008#else 3568#else
3009int 3569int
3010#endif 3570#endif
3011ev_default_loop (unsigned int flags) EV_THROW 3571ev_default_loop (unsigned int flags) EV_NOEXCEPT
3012{ 3572{
3013 if (!ev_default_loop_ptr) 3573 if (!ev_default_loop_ptr)
3014 { 3574 {
3015#if EV_MULTIPLICITY 3575#if EV_MULTIPLICITY
3016 EV_P = ev_default_loop_ptr = &default_loop_struct; 3576 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
3035 3595
3036 return ev_default_loop_ptr; 3596 return ev_default_loop_ptr;
3037} 3597}
3038 3598
3039void 3599void
3040ev_loop_fork (EV_P) EV_THROW 3600ev_loop_fork (EV_P) EV_NOEXCEPT
3041{ 3601{
3042 postfork = 1; 3602 postfork = 1;
3043} 3603}
3044 3604
3045/*****************************************************************************/ 3605/*****************************************************************************/
… …
3049{ 3609{
3050 EV_CB_INVOKE ((W)w, revents); 3610 EV_CB_INVOKE ((W)w, revents);
3051} 3611}
3052 3612
3053unsigned int 3613unsigned int
3054ev_pending_count (EV_P) EV_THROW 3614ev_pending_count (EV_P) EV_NOEXCEPT
3055{ 3615{
3056 int pri; 3616 int pri;
3057 unsigned int count = 0; 3617 unsigned int count = 0;
3058 3618
3059 for (pri = NUMPRI; pri--; ) 3619 for (pri = NUMPRI; pri--; )
3060 count += pendingcnt [pri]; 3620 count += pendingcnt [pri];
3061 3621
3062 return count; 3622 return count;
3063} 3623}
3064 3624
3065void noinline 3625ecb_noinline
3626void
3066ev_invoke_pending (EV_P) 3627ev_invoke_pending (EV_P)
3067{ 3628{
3068 pendingpri = NUMPRI; 3629 pendingpri = NUMPRI;
3069 3630
3070 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */ 3631 do
3071 { 3632 {
3072 --pendingpri; 3633 --pendingpri;
3073 3634
3635 /* pendingpri possibly gets modified in the inner loop */
3074 while (pendingcnt [pendingpri]) 3636 while (pendingcnt [pendingpri])
3075 { 3637 {
3076 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri]; 3638 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
3077 3639
3078 p->w->pending = 0; 3640 p->w->pending = 0;
3079 EV_CB_INVOKE (p->w, p->events); 3641 EV_CB_INVOKE (p->w, p->events);
3080 EV_FREQUENT_CHECK; 3642 EV_FREQUENT_CHECK;
3081 } 3643 }
3082 } 3644 }
3645 while (pendingpri);
3083} 3646}
3084 3647
3085#if EV_IDLE_ENABLE 3648#if EV_IDLE_ENABLE
3086/* make idle watchers pending. this handles the "call-idle */ 3649/* make idle watchers pending. this handles the "call-idle */
3087/* only when higher priorities are idle" logic */ 3650/* only when higher priorities are idle" logic */
3088inline_size void 3651inline_size void
3089idle_reify (EV_P) 3652idle_reify (EV_P)
3090{ 3653{
3091 if (expect_false (idleall)) 3654 if (ecb_expect_false (idleall))
3092 { 3655 {
3093 int pri; 3656 int pri;
3094 3657
3095 for (pri = NUMPRI; pri--; ) 3658 for (pri = NUMPRI; pri--; )
3096 { 3659 {
… …
3126 { 3689 {
3127 ev_at (w) += w->repeat; 3690 ev_at (w) += w->repeat;
3128 if (ev_at (w) < mn_now) 3691 if (ev_at (w) < mn_now)
3129 ev_at (w) = mn_now; 3692 ev_at (w) = mn_now;
3130 3693
3131 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 3694 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > EV_TS_CONST (0.)));
3132 3695
3133 ANHE_at_cache (timers [HEAP0]); 3696 ANHE_at_cache (timers [HEAP0]);
3134 downheap (timers, timercnt, HEAP0); 3697 downheap (timers, timercnt, HEAP0);
3135 } 3698 }
3136 else 3699 else
… …
3145 } 3708 }
3146} 3709}
3147 3710
3148#if EV_PERIODIC_ENABLE 3711#if EV_PERIODIC_ENABLE
3149 3712
3150static void noinline 3713ecb_noinline
3714static void
3151periodic_recalc (EV_P_ ev_periodic *w) 3715periodic_recalc (EV_P_ ev_periodic *w)
3152{ 3716{
3153 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3717 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3154 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); 3718 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3155 3719
… …
3157 while (at <= ev_rt_now) 3721 while (at <= ev_rt_now)
3158 { 3722 {
3159 ev_tstamp nat = at + w->interval; 3723 ev_tstamp nat = at + w->interval;
3160 3724
3161 /* when resolution fails us, we use ev_rt_now */ 3725 /* when resolution fails us, we use ev_rt_now */
3162 if (expect_false (nat == at)) 3726 if (ecb_expect_false (nat == at))
3163 { 3727 {
3164 at = ev_rt_now; 3728 at = ev_rt_now;
3165 break; 3729 break;
3166 } 3730 }
3167 3731
… …
3213 } 3777 }
3214} 3778}
3215 3779
3216/* simply recalculate all periodics */ 3780/* simply recalculate all periodics */
3217/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3781/* TODO: maybe ensure that at least one event happens when jumping forward? */
3218static void noinline ecb_cold 3782ecb_noinline ecb_cold
3783static void
3219periodics_reschedule (EV_P) 3784periodics_reschedule (EV_P)
3220{ 3785{
3221 int i; 3786 int i;
3222 3787
3223 /* adjust periodics after time jump */ 3788 /* adjust periodics after time jump */
… …
3236 reheap (periodics, periodiccnt); 3801 reheap (periodics, periodiccnt);
3237} 3802}
3238#endif 3803#endif
3239 3804
3240/* adjust all timers by a given offset */ 3805/* adjust all timers by a given offset */
3241static void noinline ecb_cold 3806ecb_noinline ecb_cold
3807static void
3242timers_reschedule (EV_P_ ev_tstamp adjust) 3808timers_reschedule (EV_P_ ev_tstamp adjust)
3243{ 3809{
3244 int i; 3810 int i;
3245 3811
3246 for (i = 0; i < timercnt; ++i) 3812 for (i = 0; i < timercnt; ++i)
… …
3255/* also detect if there was a timejump, and act accordingly */ 3821/* also detect if there was a timejump, and act accordingly */
3256inline_speed void 3822inline_speed void
3257time_update (EV_P_ ev_tstamp max_block) 3823time_update (EV_P_ ev_tstamp max_block)
3258{ 3824{
3259#if EV_USE_MONOTONIC 3825#if EV_USE_MONOTONIC
3260 if (expect_true (have_monotonic)) 3826 if (ecb_expect_true (have_monotonic))
3261 { 3827 {
3262 int i; 3828 int i;
3263 ev_tstamp odiff = rtmn_diff; 3829 ev_tstamp odiff = rtmn_diff;
3264 3830
3265 mn_now = get_clock (); 3831 mn_now = get_clock ();
3266 3832
3267 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3833 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
3268 /* interpolate in the meantime */ 3834 /* interpolate in the meantime */
3269 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3835 if (ecb_expect_true (mn_now - now_floor < EV_TS_CONST (MIN_TIMEJUMP * .5)))
3270 { 3836 {
3271 ev_rt_now = rtmn_diff + mn_now; 3837 ev_rt_now = rtmn_diff + mn_now;
3272 return; 3838 return;
3273 } 3839 }
3274 3840
… …
3288 ev_tstamp diff; 3854 ev_tstamp diff;
3289 rtmn_diff = ev_rt_now - mn_now; 3855 rtmn_diff = ev_rt_now - mn_now;
3290 3856
3291 diff = odiff - rtmn_diff; 3857 diff = odiff - rtmn_diff;
3292 3858
3293 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP)) 3859 if (ecb_expect_true ((diff < EV_TS_CONST (0.) ? -diff : diff) < EV_TS_CONST (MIN_TIMEJUMP)))
3294 return; /* all is well */ 3860 return; /* all is well */
3295 3861
3296 ev_rt_now = ev_time (); 3862 ev_rt_now = ev_time ();
3297 mn_now = get_clock (); 3863 mn_now = get_clock ();
3298 now_floor = mn_now; 3864 now_floor = mn_now;
… …
3307 else 3873 else
3308#endif 3874#endif
3309 { 3875 {
3310 ev_rt_now = ev_time (); 3876 ev_rt_now = ev_time ();
3311 3877
3312 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 3878 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + EV_TS_CONST (MIN_TIMEJUMP)))
3313 { 3879 {
3314 /* adjust timers. this is easy, as the offset is the same for all of them */ 3880 /* adjust timers. this is easy, as the offset is the same for all of them */
3315 timers_reschedule (EV_A_ ev_rt_now - mn_now); 3881 timers_reschedule (EV_A_ ev_rt_now - mn_now);
3316#if EV_PERIODIC_ENABLE 3882#if EV_PERIODIC_ENABLE
3317 periodics_reschedule (EV_A); 3883 periodics_reschedule (EV_A);
… …
3340#if EV_VERIFY >= 2 3906#if EV_VERIFY >= 2
3341 ev_verify (EV_A); 3907 ev_verify (EV_A);
3342#endif 3908#endif
3343 3909
3344#ifndef _WIN32 3910#ifndef _WIN32
3345 if (expect_false (curpid)) /* penalise the forking check even more */ 3911 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
3346 if (expect_false (getpid () != curpid)) 3912 if (ecb_expect_false (getpid () != curpid))
3347 { 3913 {
3348 curpid = getpid (); 3914 curpid = getpid ();
3349 postfork = 1; 3915 postfork = 1;
3350 } 3916 }
3351#endif 3917#endif
3352 3918
3353#if EV_FORK_ENABLE 3919#if EV_FORK_ENABLE
3354 /* we might have forked, so queue fork handlers */ 3920 /* we might have forked, so queue fork handlers */
3355 if (expect_false (postfork)) 3921 if (ecb_expect_false (postfork))
3356 if (forkcnt) 3922 if (forkcnt)
3357 { 3923 {
3358 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3924 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
3359 EV_INVOKE_PENDING; 3925 EV_INVOKE_PENDING;
3360 } 3926 }
3361#endif 3927#endif
3362 3928
3363#if EV_PREPARE_ENABLE 3929#if EV_PREPARE_ENABLE
3364 /* queue prepare watchers (and execute them) */ 3930 /* queue prepare watchers (and execute them) */
3365 if (expect_false (preparecnt)) 3931 if (ecb_expect_false (preparecnt))
3366 { 3932 {
3367 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3933 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
3368 EV_INVOKE_PENDING; 3934 EV_INVOKE_PENDING;
3369 } 3935 }
3370#endif 3936#endif
3371 3937
3372 if (expect_false (loop_done)) 3938 if (ecb_expect_false (loop_done))
3373 break; 3939 break;
3374 3940
3375 /* we might have forked, so reify kernel state if necessary */ 3941 /* we might have forked, so reify kernel state if necessary */
3376 if (expect_false (postfork)) 3942 if (ecb_expect_false (postfork))
3377 loop_fork (EV_A); 3943 loop_fork (EV_A);
3378 3944
3379 /* update fd-related kernel structures */ 3945 /* update fd-related kernel structures */
3380 fd_reify (EV_A); 3946 fd_reify (EV_A);
3381 3947
… …
3386 3952
3387 /* remember old timestamp for io_blocktime calculation */ 3953 /* remember old timestamp for io_blocktime calculation */
3388 ev_tstamp prev_mn_now = mn_now; 3954 ev_tstamp prev_mn_now = mn_now;
3389 3955
3390 /* update time to cancel out callback processing overhead */ 3956 /* update time to cancel out callback processing overhead */
3391 time_update (EV_A_ 1e100); 3957 time_update (EV_A_ EV_TS_CONST (EV_TSTAMP_HUGE));
3392 3958
3393 /* from now on, we want a pipe-wake-up */ 3959 /* from now on, we want a pipe-wake-up */
3394 pipe_write_wanted = 1; 3960 pipe_write_wanted = 1;
3395 3961
3396 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */ 3962 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3397 3963
3398 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) 3964 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
3399 { 3965 {
3400 waittime = MAX_BLOCKTIME; 3966 waittime = EV_TS_CONST (MAX_BLOCKTIME);
3401 3967
3402 if (timercnt) 3968 if (timercnt)
3403 { 3969 {
3404 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now; 3970 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
3405 if (waittime > to) waittime = to; 3971 if (waittime > to) waittime = to;
… …
3412 if (waittime > to) waittime = to; 3978 if (waittime > to) waittime = to;
3413 } 3979 }
3414#endif 3980#endif
3415 3981
3416 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3982 /* don't let timeouts decrease the waittime below timeout_blocktime */
3417 if (expect_false (waittime < timeout_blocktime)) 3983 if (ecb_expect_false (waittime < timeout_blocktime))
3418 waittime = timeout_blocktime; 3984 waittime = timeout_blocktime;
3419 3985
3420 /* at this point, we NEED to wait, so we have to ensure */ 3986 /* now there are two more special cases left, either we have
3421 /* to pass a minimum nonzero value to the backend */ 3987 * already-expired timers, so we should not sleep, or we have timers
3988 * that expire very soon, in which case we need to wait for a minimum
3989 * amount of time for some event loop backends.
3990 */
3422 if (expect_false (waittime < backend_mintime)) 3991 if (ecb_expect_false (waittime < backend_mintime))
3992 waittime = waittime <= EV_TS_CONST (0.)
3993 ? EV_TS_CONST (0.)
3423 waittime = backend_mintime; 3994 : backend_mintime;
3424 3995
3425 /* extra check because io_blocktime is commonly 0 */ 3996 /* extra check because io_blocktime is commonly 0 */
3426 if (expect_false (io_blocktime)) 3997 if (ecb_expect_false (io_blocktime))
3427 { 3998 {
3428 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3999 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3429 4000
3430 if (sleeptime > waittime - backend_mintime) 4001 if (sleeptime > waittime - backend_mintime)
3431 sleeptime = waittime - backend_mintime; 4002 sleeptime = waittime - backend_mintime;
3432 4003
3433 if (expect_true (sleeptime > 0.)) 4004 if (ecb_expect_true (sleeptime > EV_TS_CONST (0.)))
3434 { 4005 {
3435 ev_sleep (sleeptime); 4006 ev_sleep (sleeptime);
3436 waittime -= sleeptime; 4007 waittime -= sleeptime;
3437 } 4008 }
3438 } 4009 }
… …
3452 { 4023 {
3453 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 4024 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3454 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 4025 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3455 } 4026 }
3456 4027
3457
3458 /* update ev_rt_now, do magic */ 4028 /* update ev_rt_now, do magic */
3459 time_update (EV_A_ waittime + sleeptime); 4029 time_update (EV_A_ waittime + sleeptime);
3460 } 4030 }
3461 4031
3462 /* queue pending timers and reschedule them */ 4032 /* queue pending timers and reschedule them */
… …
3470 idle_reify (EV_A); 4040 idle_reify (EV_A);
3471#endif 4041#endif
3472 4042
3473#if EV_CHECK_ENABLE 4043#if EV_CHECK_ENABLE
3474 /* queue check watchers, to be executed first */ 4044 /* queue check watchers, to be executed first */
3475 if (expect_false (checkcnt)) 4045 if (ecb_expect_false (checkcnt))
3476 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 4046 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3477#endif 4047#endif
3478 4048
3479 EV_INVOKE_PENDING; 4049 EV_INVOKE_PENDING;
3480 } 4050 }
3481 while (expect_true ( 4051 while (ecb_expect_true (
3482 activecnt 4052 activecnt
3483 && !loop_done 4053 && !loop_done
3484 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) 4054 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
3485 )); 4055 ));
3486 4056
… …
3493 4063
3494 return activecnt; 4064 return activecnt;
3495} 4065}
3496 4066
3497void 4067void
3498ev_break (EV_P_ int how) EV_THROW 4068ev_break (EV_P_ int how) EV_NOEXCEPT
3499{ 4069{
3500 loop_done = how; 4070 loop_done = how;
3501} 4071}
3502 4072
3503void 4073void
3504ev_ref (EV_P) EV_THROW 4074ev_ref (EV_P) EV_NOEXCEPT
3505{ 4075{
3506 ++activecnt; 4076 ++activecnt;
3507} 4077}
3508 4078
3509void 4079void
3510ev_unref (EV_P) EV_THROW 4080ev_unref (EV_P) EV_NOEXCEPT
3511{ 4081{
3512 --activecnt; 4082 --activecnt;
3513} 4083}
3514 4084
3515void 4085void
3516ev_now_update (EV_P) EV_THROW 4086ev_now_update (EV_P) EV_NOEXCEPT
3517{ 4087{
3518 time_update (EV_A_ 1e100); 4088 time_update (EV_A_ EV_TSTAMP_HUGE);
3519} 4089}
3520 4090
3521void 4091void
3522ev_suspend (EV_P) EV_THROW 4092ev_suspend (EV_P) EV_NOEXCEPT
3523{ 4093{
3524 ev_now_update (EV_A); 4094 ev_now_update (EV_A);
3525} 4095}
3526 4096
3527void 4097void
3528ev_resume (EV_P) EV_THROW 4098ev_resume (EV_P) EV_NOEXCEPT
3529{ 4099{
3530 ev_tstamp mn_prev = mn_now; 4100 ev_tstamp mn_prev = mn_now;
3531 4101
3532 ev_now_update (EV_A); 4102 ev_now_update (EV_A);
3533 timers_reschedule (EV_A_ mn_now - mn_prev); 4103 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
3550inline_size void 4120inline_size void
3551wlist_del (WL *head, WL elem) 4121wlist_del (WL *head, WL elem)
3552{ 4122{
3553 while (*head) 4123 while (*head)
3554 { 4124 {
3555 if (expect_true (*head == elem)) 4125 if (ecb_expect_true (*head == elem))
3556 { 4126 {
3557 *head = elem->next; 4127 *head = elem->next;
3558 break; 4128 break;
3559 } 4129 }
3560 4130
… …
3572 w->pending = 0; 4142 w->pending = 0;
3573 } 4143 }
3574} 4144}
3575 4145
3576int 4146int
3577ev_clear_pending (EV_P_ void *w) EV_THROW 4147ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
3578{ 4148{
3579 W w_ = (W)w; 4149 W w_ = (W)w;
3580 int pending = w_->pending; 4150 int pending = w_->pending;
3581 4151
3582 if (expect_true (pending)) 4152 if (ecb_expect_true (pending))
3583 { 4153 {
3584 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4154 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3585 p->w = (W)&pending_w; 4155 p->w = (W)&pending_w;
3586 w_->pending = 0; 4156 w_->pending = 0;
3587 return p->events; 4157 return p->events;
… …
3614 w->active = 0; 4184 w->active = 0;
3615} 4185}
3616 4186
3617/*****************************************************************************/ 4187/*****************************************************************************/
3618 4188
3619void noinline 4189ecb_noinline
4190void
3620ev_io_start (EV_P_ ev_io *w) EV_THROW 4191ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
3621{ 4192{
3622 int fd = w->fd; 4193 int fd = w->fd;
3623 4194
3624 if (expect_false (ev_is_active (w))) 4195 if (ecb_expect_false (ev_is_active (w)))
3625 return; 4196 return;
3626 4197
3627 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4198 assert (("libev: ev_io_start called with negative fd", fd >= 0));
3628 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 4199 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
3629 4200
4201#if EV_VERIFY >= 2
4202 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4203#endif
3630 EV_FREQUENT_CHECK; 4204 EV_FREQUENT_CHECK;
3631 4205
3632 ev_start (EV_A_ (W)w, 1); 4206 ev_start (EV_A_ (W)w, 1);
3633 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4207 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
3634 wlist_add (&anfds[fd].head, (WL)w); 4208 wlist_add (&anfds[fd].head, (WL)w);
3635 4209
3636 /* common bug, apparently */ 4210 /* common bug, apparently */
3637 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w)); 4211 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3638 4212
… …
3640 w->events &= ~EV__IOFDSET; 4214 w->events &= ~EV__IOFDSET;
3641 4215
3642 EV_FREQUENT_CHECK; 4216 EV_FREQUENT_CHECK;
3643} 4217}
3644 4218
3645void noinline 4219ecb_noinline
4220void
3646ev_io_stop (EV_P_ ev_io *w) EV_THROW 4221ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
3647{ 4222{
3648 clear_pending (EV_A_ (W)w); 4223 clear_pending (EV_A_ (W)w);
3649 if (expect_false (!ev_is_active (w))) 4224 if (ecb_expect_false (!ev_is_active (w)))
3650 return; 4225 return;
3651 4226
3652 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4227 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
3653 4228
4229#if EV_VERIFY >= 2
4230 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4231#endif
3654 EV_FREQUENT_CHECK; 4232 EV_FREQUENT_CHECK;
3655 4233
3656 wlist_del (&anfds[w->fd].head, (WL)w); 4234 wlist_del (&anfds[w->fd].head, (WL)w);
3657 ev_stop (EV_A_ (W)w); 4235 ev_stop (EV_A_ (W)w);
3658 4236
3659 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 4237 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3660 4238
3661 EV_FREQUENT_CHECK; 4239 EV_FREQUENT_CHECK;
3662} 4240}
3663 4241
3664void noinline 4242ecb_noinline
4243void
3665ev_timer_start (EV_P_ ev_timer *w) EV_THROW 4244ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
3666{ 4245{
3667 if (expect_false (ev_is_active (w))) 4246 if (ecb_expect_false (ev_is_active (w)))
3668 return; 4247 return;
3669 4248
3670 ev_at (w) += mn_now; 4249 ev_at (w) += mn_now;
3671 4250
3672 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4251 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
3673 4252
3674 EV_FREQUENT_CHECK; 4253 EV_FREQUENT_CHECK;
3675 4254
3676 ++timercnt; 4255 ++timercnt;
3677 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4256 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
3678 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4257 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
3679 ANHE_w (timers [ev_active (w)]) = (WT)w; 4258 ANHE_w (timers [ev_active (w)]) = (WT)w;
3680 ANHE_at_cache (timers [ev_active (w)]); 4259 ANHE_at_cache (timers [ev_active (w)]);
3681 upheap (timers, ev_active (w)); 4260 upheap (timers, ev_active (w));
3682 4261
3683 EV_FREQUENT_CHECK; 4262 EV_FREQUENT_CHECK;
3684 4263
3685 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4264 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
3686} 4265}
3687 4266
3688void noinline 4267ecb_noinline
4268void
3689ev_timer_stop (EV_P_ ev_timer *w) EV_THROW 4269ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
3690{ 4270{
3691 clear_pending (EV_A_ (W)w); 4271 clear_pending (EV_A_ (W)w);
3692 if (expect_false (!ev_is_active (w))) 4272 if (ecb_expect_false (!ev_is_active (w)))
3693 return; 4273 return;
3694 4274
3695 EV_FREQUENT_CHECK; 4275 EV_FREQUENT_CHECK;
3696 4276
3697 { 4277 {
… …
3699 4279
3700 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4280 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
3701 4281
3702 --timercnt; 4282 --timercnt;
3703 4283
3704 if (expect_true (active < timercnt + HEAP0)) 4284 if (ecb_expect_true (active < timercnt + HEAP0))
3705 { 4285 {
3706 timers [active] = timers [timercnt + HEAP0]; 4286 timers [active] = timers [timercnt + HEAP0];
3707 adjustheap (timers, timercnt, active); 4287 adjustheap (timers, timercnt, active);
3708 } 4288 }
3709 } 4289 }
… …
3713 ev_stop (EV_A_ (W)w); 4293 ev_stop (EV_A_ (W)w);
3714 4294
3715 EV_FREQUENT_CHECK; 4295 EV_FREQUENT_CHECK;
3716} 4296}
3717 4297
3718void noinline 4298ecb_noinline
4299void
3719ev_timer_again (EV_P_ ev_timer *w) EV_THROW 4300ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
3720{ 4301{
3721 EV_FREQUENT_CHECK; 4302 EV_FREQUENT_CHECK;
3722 4303
3723 clear_pending (EV_A_ (W)w); 4304 clear_pending (EV_A_ (W)w);
3724 4305
… …
3741 4322
3742 EV_FREQUENT_CHECK; 4323 EV_FREQUENT_CHECK;
3743} 4324}
3744 4325
3745ev_tstamp 4326ev_tstamp
3746ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW 4327ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
3747{ 4328{
3748 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4329 return ev_at (w) - (ev_is_active (w) ? mn_now : EV_TS_CONST (0.));
3749} 4330}
3750 4331
3751#if EV_PERIODIC_ENABLE 4332#if EV_PERIODIC_ENABLE
3752void noinline 4333ecb_noinline
4334void
3753ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW 4335ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
3754{ 4336{
3755 if (expect_false (ev_is_active (w))) 4337 if (ecb_expect_false (ev_is_active (w)))
3756 return; 4338 return;
4339
4340#if EV_USE_TIMERFD
4341 if (timerfd == -2)
4342 evtimerfd_init (EV_A);
4343#endif
3757 4344
3758 if (w->reschedule_cb) 4345 if (w->reschedule_cb)
3759 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4346 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
3760 else if (w->interval) 4347 else if (w->interval)
3761 { 4348 {
… …
3767 4354
3768 EV_FREQUENT_CHECK; 4355 EV_FREQUENT_CHECK;
3769 4356
3770 ++periodiccnt; 4357 ++periodiccnt;
3771 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4358 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
3772 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4359 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
3773 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4360 ANHE_w (periodics [ev_active (w)]) = (WT)w;
3774 ANHE_at_cache (periodics [ev_active (w)]); 4361 ANHE_at_cache (periodics [ev_active (w)]);
3775 upheap (periodics, ev_active (w)); 4362 upheap (periodics, ev_active (w));
3776 4363
3777 EV_FREQUENT_CHECK; 4364 EV_FREQUENT_CHECK;
3778 4365
3779 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4366 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
3780} 4367}
3781 4368
3782void noinline 4369ecb_noinline
4370void
3783ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW 4371ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
3784{ 4372{
3785 clear_pending (EV_A_ (W)w); 4373 clear_pending (EV_A_ (W)w);
3786 if (expect_false (!ev_is_active (w))) 4374 if (ecb_expect_false (!ev_is_active (w)))
3787 return; 4375 return;
3788 4376
3789 EV_FREQUENT_CHECK; 4377 EV_FREQUENT_CHECK;
3790 4378
3791 { 4379 {
… …
3793 4381
3794 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4382 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
3795 4383
3796 --periodiccnt; 4384 --periodiccnt;
3797 4385
3798 if (expect_true (active < periodiccnt + HEAP0)) 4386 if (ecb_expect_true (active < periodiccnt + HEAP0))
3799 { 4387 {
3800 periodics [active] = periodics [periodiccnt + HEAP0]; 4388 periodics [active] = periodics [periodiccnt + HEAP0];
3801 adjustheap (periodics, periodiccnt, active); 4389 adjustheap (periodics, periodiccnt, active);
3802 } 4390 }
3803 } 4391 }
… …
3805 ev_stop (EV_A_ (W)w); 4393 ev_stop (EV_A_ (W)w);
3806 4394
3807 EV_FREQUENT_CHECK; 4395 EV_FREQUENT_CHECK;
3808} 4396}
3809 4397
3810void noinline 4398ecb_noinline
4399void
3811ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW 4400ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
3812{ 4401{
3813 /* TODO: use adjustheap and recalculation */ 4402 /* TODO: use adjustheap and recalculation */
3814 ev_periodic_stop (EV_A_ w); 4403 ev_periodic_stop (EV_A_ w);
3815 ev_periodic_start (EV_A_ w); 4404 ev_periodic_start (EV_A_ w);
3816} 4405}
… …
3820# define SA_RESTART 0 4409# define SA_RESTART 0
3821#endif 4410#endif
3822 4411
3823#if EV_SIGNAL_ENABLE 4412#if EV_SIGNAL_ENABLE
3824 4413
3825void noinline 4414ecb_noinline
4415void
3826ev_signal_start (EV_P_ ev_signal *w) EV_THROW 4416ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
3827{ 4417{
3828 if (expect_false (ev_is_active (w))) 4418 if (ecb_expect_false (ev_is_active (w)))
3829 return; 4419 return;
3830 4420
3831 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4421 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
3832 4422
3833#if EV_MULTIPLICITY 4423#if EV_MULTIPLICITY
… …
3902 } 4492 }
3903 4493
3904 EV_FREQUENT_CHECK; 4494 EV_FREQUENT_CHECK;
3905} 4495}
3906 4496
3907void noinline 4497ecb_noinline
4498void
3908ev_signal_stop (EV_P_ ev_signal *w) EV_THROW 4499ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
3909{ 4500{
3910 clear_pending (EV_A_ (W)w); 4501 clear_pending (EV_A_ (W)w);
3911 if (expect_false (!ev_is_active (w))) 4502 if (ecb_expect_false (!ev_is_active (w)))
3912 return; 4503 return;
3913 4504
3914 EV_FREQUENT_CHECK; 4505 EV_FREQUENT_CHECK;
3915 4506
3916 wlist_del (&signals [w->signum - 1].head, (WL)w); 4507 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
3944#endif 4535#endif
3945 4536
3946#if EV_CHILD_ENABLE 4537#if EV_CHILD_ENABLE
3947 4538
3948void 4539void
3949ev_child_start (EV_P_ ev_child *w) EV_THROW 4540ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
3950{ 4541{
3951#if EV_MULTIPLICITY 4542#if EV_MULTIPLICITY
3952 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4543 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3953#endif 4544#endif
3954 if (expect_false (ev_is_active (w))) 4545 if (ecb_expect_false (ev_is_active (w)))
3955 return; 4546 return;
3956 4547
3957 EV_FREQUENT_CHECK; 4548 EV_FREQUENT_CHECK;
3958 4549
3959 ev_start (EV_A_ (W)w, 1); 4550 ev_start (EV_A_ (W)w, 1);
… …
3961 4552
3962 EV_FREQUENT_CHECK; 4553 EV_FREQUENT_CHECK;
3963} 4554}
3964 4555
3965void 4556void
3966ev_child_stop (EV_P_ ev_child *w) EV_THROW 4557ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
3967{ 4558{
3968 clear_pending (EV_A_ (W)w); 4559 clear_pending (EV_A_ (W)w);
3969 if (expect_false (!ev_is_active (w))) 4560 if (ecb_expect_false (!ev_is_active (w)))
3970 return; 4561 return;
3971 4562
3972 EV_FREQUENT_CHECK; 4563 EV_FREQUENT_CHECK;
3973 4564
3974 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); 4565 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
… …
3988 4579
3989#define DEF_STAT_INTERVAL 5.0074891 4580#define DEF_STAT_INTERVAL 5.0074891
3990#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4581#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3991#define MIN_STAT_INTERVAL 0.1074891 4582#define MIN_STAT_INTERVAL 0.1074891
3992 4583
3993static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4584ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
3994 4585
3995#if EV_USE_INOTIFY 4586#if EV_USE_INOTIFY
3996 4587
3997/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4588/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3998# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4589# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3999 4590
4000static void noinline 4591ecb_noinline
4592static void
4001infy_add (EV_P_ ev_stat *w) 4593infy_add (EV_P_ ev_stat *w)
4002{ 4594{
4003 w->wd = inotify_add_watch (fs_fd, w->path, 4595 w->wd = inotify_add_watch (fs_fd, w->path,
4004 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY 4596 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4005 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO 4597 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
… …
4069 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4661 if (ev_is_active (&w->timer)) ev_ref (EV_A);
4070 ev_timer_again (EV_A_ &w->timer); 4662 ev_timer_again (EV_A_ &w->timer);
4071 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4663 if (ev_is_active (&w->timer)) ev_unref (EV_A);
4072} 4664}
4073 4665
4074static void noinline 4666ecb_noinline
4667static void
4075infy_del (EV_P_ ev_stat *w) 4668infy_del (EV_P_ ev_stat *w)
4076{ 4669{
4077 int slot; 4670 int slot;
4078 int wd = w->wd; 4671 int wd = w->wd;
4079 4672
… …
4086 4679
4087 /* remove this watcher, if others are watching it, they will rearm */ 4680 /* remove this watcher, if others are watching it, they will rearm */
4088 inotify_rm_watch (fs_fd, wd); 4681 inotify_rm_watch (fs_fd, wd);
4089} 4682}
4090 4683
4091static void noinline 4684ecb_noinline
4685static void
4092infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4686infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
4093{ 4687{
4094 if (slot < 0) 4688 if (slot < 0)
4095 /* overflow, need to check for all hash slots */ 4689 /* overflow, need to check for all hash slots */
4096 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4690 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
4132 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4726 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4133 ofs += sizeof (struct inotify_event) + ev->len; 4727 ofs += sizeof (struct inotify_event) + ev->len;
4134 } 4728 }
4135} 4729}
4136 4730
4137inline_size void ecb_cold 4731inline_size ecb_cold
4732void
4138ev_check_2625 (EV_P) 4733ev_check_2625 (EV_P)
4139{ 4734{
4140 /* kernels < 2.6.25 are borked 4735 /* kernels < 2.6.25 are borked
4141 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4736 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
4142 */ 4737 */
… …
4232#else 4827#else
4233# define EV_LSTAT(p,b) lstat (p, b) 4828# define EV_LSTAT(p,b) lstat (p, b)
4234#endif 4829#endif
4235 4830
4236void 4831void
4237ev_stat_stat (EV_P_ ev_stat *w) EV_THROW 4832ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
4238{ 4833{
4239 if (lstat (w->path, &w->attr) < 0) 4834 if (lstat (w->path, &w->attr) < 0)
4240 w->attr.st_nlink = 0; 4835 w->attr.st_nlink = 0;
4241 else if (!w->attr.st_nlink) 4836 else if (!w->attr.st_nlink)
4242 w->attr.st_nlink = 1; 4837 w->attr.st_nlink = 1;
4243} 4838}
4244 4839
4245static void noinline 4840ecb_noinline
4841static void
4246stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4842stat_timer_cb (EV_P_ ev_timer *w_, int revents)
4247{ 4843{
4248 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4844 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
4249 4845
4250 ev_statdata prev = w->attr; 4846 ev_statdata prev = w->attr;
… …
4281 ev_feed_event (EV_A_ w, EV_STAT); 4877 ev_feed_event (EV_A_ w, EV_STAT);
4282 } 4878 }
4283} 4879}
4284 4880
4285void 4881void
4286ev_stat_start (EV_P_ ev_stat *w) EV_THROW 4882ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
4287{ 4883{
4288 if (expect_false (ev_is_active (w))) 4884 if (ecb_expect_false (ev_is_active (w)))
4289 return; 4885 return;
4290 4886
4291 ev_stat_stat (EV_A_ w); 4887 ev_stat_stat (EV_A_ w);
4292 4888
4293 if (w->interval < MIN_STAT_INTERVAL && w->interval) 4889 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
4312 4908
4313 EV_FREQUENT_CHECK; 4909 EV_FREQUENT_CHECK;
4314} 4910}
4315 4911
4316void 4912void
4317ev_stat_stop (EV_P_ ev_stat *w) EV_THROW 4913ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
4318{ 4914{
4319 clear_pending (EV_A_ (W)w); 4915 clear_pending (EV_A_ (W)w);
4320 if (expect_false (!ev_is_active (w))) 4916 if (ecb_expect_false (!ev_is_active (w)))
4321 return; 4917 return;
4322 4918
4323 EV_FREQUENT_CHECK; 4919 EV_FREQUENT_CHECK;
4324 4920
4325#if EV_USE_INOTIFY 4921#if EV_USE_INOTIFY
… …
4338} 4934}
4339#endif 4935#endif
4340 4936
4341#if EV_IDLE_ENABLE 4937#if EV_IDLE_ENABLE
4342void 4938void
4343ev_idle_start (EV_P_ ev_idle *w) EV_THROW 4939ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
4344{ 4940{
4345 if (expect_false (ev_is_active (w))) 4941 if (ecb_expect_false (ev_is_active (w)))
4346 return; 4942 return;
4347 4943
4348 pri_adjust (EV_A_ (W)w); 4944 pri_adjust (EV_A_ (W)w);
4349 4945
4350 EV_FREQUENT_CHECK; 4946 EV_FREQUENT_CHECK;
… …
4353 int active = ++idlecnt [ABSPRI (w)]; 4949 int active = ++idlecnt [ABSPRI (w)];
4354 4950
4355 ++idleall; 4951 ++idleall;
4356 ev_start (EV_A_ (W)w, active); 4952 ev_start (EV_A_ (W)w, active);
4357 4953
4358 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4954 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
4359 idles [ABSPRI (w)][active - 1] = w; 4955 idles [ABSPRI (w)][active - 1] = w;
4360 } 4956 }
4361 4957
4362 EV_FREQUENT_CHECK; 4958 EV_FREQUENT_CHECK;
4363} 4959}
4364 4960
4365void 4961void
4366ev_idle_stop (EV_P_ ev_idle *w) EV_THROW 4962ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
4367{ 4963{
4368 clear_pending (EV_A_ (W)w); 4964 clear_pending (EV_A_ (W)w);
4369 if (expect_false (!ev_is_active (w))) 4965 if (ecb_expect_false (!ev_is_active (w)))
4370 return; 4966 return;
4371 4967
4372 EV_FREQUENT_CHECK; 4968 EV_FREQUENT_CHECK;
4373 4969
4374 { 4970 {
… …
4385} 4981}
4386#endif 4982#endif
4387 4983
4388#if EV_PREPARE_ENABLE 4984#if EV_PREPARE_ENABLE
4389void 4985void
4390ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW 4986ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
4391{ 4987{
4392 if (expect_false (ev_is_active (w))) 4988 if (ecb_expect_false (ev_is_active (w)))
4393 return; 4989 return;
4394 4990
4395 EV_FREQUENT_CHECK; 4991 EV_FREQUENT_CHECK;
4396 4992
4397 ev_start (EV_A_ (W)w, ++preparecnt); 4993 ev_start (EV_A_ (W)w, ++preparecnt);
4398 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4994 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
4399 prepares [preparecnt - 1] = w; 4995 prepares [preparecnt - 1] = w;
4400 4996
4401 EV_FREQUENT_CHECK; 4997 EV_FREQUENT_CHECK;
4402} 4998}
4403 4999
4404void 5000void
4405ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW 5001ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
4406{ 5002{
4407 clear_pending (EV_A_ (W)w); 5003 clear_pending (EV_A_ (W)w);
4408 if (expect_false (!ev_is_active (w))) 5004 if (ecb_expect_false (!ev_is_active (w)))
4409 return; 5005 return;
4410 5006
4411 EV_FREQUENT_CHECK; 5007 EV_FREQUENT_CHECK;
4412 5008
4413 { 5009 {
… …
4423} 5019}
4424#endif 5020#endif
4425 5021
4426#if EV_CHECK_ENABLE 5022#if EV_CHECK_ENABLE
4427void 5023void
4428ev_check_start (EV_P_ ev_check *w) EV_THROW 5024ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
4429{ 5025{
4430 if (expect_false (ev_is_active (w))) 5026 if (ecb_expect_false (ev_is_active (w)))
4431 return; 5027 return;
4432 5028
4433 EV_FREQUENT_CHECK; 5029 EV_FREQUENT_CHECK;
4434 5030
4435 ev_start (EV_A_ (W)w, ++checkcnt); 5031 ev_start (EV_A_ (W)w, ++checkcnt);
4436 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 5032 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
4437 checks [checkcnt - 1] = w; 5033 checks [checkcnt - 1] = w;
4438 5034
4439 EV_FREQUENT_CHECK; 5035 EV_FREQUENT_CHECK;
4440} 5036}
4441 5037
4442void 5038void
4443ev_check_stop (EV_P_ ev_check *w) EV_THROW 5039ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
4444{ 5040{
4445 clear_pending (EV_A_ (W)w); 5041 clear_pending (EV_A_ (W)w);
4446 if (expect_false (!ev_is_active (w))) 5042 if (ecb_expect_false (!ev_is_active (w)))
4447 return; 5043 return;
4448 5044
4449 EV_FREQUENT_CHECK; 5045 EV_FREQUENT_CHECK;
4450 5046
4451 { 5047 {
… …
4460 EV_FREQUENT_CHECK; 5056 EV_FREQUENT_CHECK;
4461} 5057}
4462#endif 5058#endif
4463 5059
4464#if EV_EMBED_ENABLE 5060#if EV_EMBED_ENABLE
4465void noinline 5061ecb_noinline
5062void
4466ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW 5063ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
4467{ 5064{
4468 ev_run (w->other, EVRUN_NOWAIT); 5065 ev_run (w->other, EVRUN_NOWAIT);
4469} 5066}
4470 5067
4471static void 5068static void
… …
4493 ev_run (EV_A_ EVRUN_NOWAIT); 5090 ev_run (EV_A_ EVRUN_NOWAIT);
4494 } 5091 }
4495 } 5092 }
4496} 5093}
4497 5094
5095#if EV_FORK_ENABLE
4498static void 5096static void
4499embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 5097embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
4500{ 5098{
4501 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 5099 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
4502 5100
… …
4509 ev_run (EV_A_ EVRUN_NOWAIT); 5107 ev_run (EV_A_ EVRUN_NOWAIT);
4510 } 5108 }
4511 5109
4512 ev_embed_start (EV_A_ w); 5110 ev_embed_start (EV_A_ w);
4513} 5111}
5112#endif
4514 5113
4515#if 0 5114#if 0
4516static void 5115static void
4517embed_idle_cb (EV_P_ ev_idle *idle, int revents) 5116embed_idle_cb (EV_P_ ev_idle *idle, int revents)
4518{ 5117{
4519 ev_idle_stop (EV_A_ idle); 5118 ev_idle_stop (EV_A_ idle);
4520} 5119}
4521#endif 5120#endif
4522 5121
4523void 5122void
4524ev_embed_start (EV_P_ ev_embed *w) EV_THROW 5123ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
4525{ 5124{
4526 if (expect_false (ev_is_active (w))) 5125 if (ecb_expect_false (ev_is_active (w)))
4527 return; 5126 return;
4528 5127
4529 { 5128 {
4530 EV_P = w->other; 5129 EV_P = w->other;
4531 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 5130 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
… …
4539 5138
4540 ev_prepare_init (&w->prepare, embed_prepare_cb); 5139 ev_prepare_init (&w->prepare, embed_prepare_cb);
4541 ev_set_priority (&w->prepare, EV_MINPRI); 5140 ev_set_priority (&w->prepare, EV_MINPRI);
4542 ev_prepare_start (EV_A_ &w->prepare); 5141 ev_prepare_start (EV_A_ &w->prepare);
4543 5142
5143#if EV_FORK_ENABLE
4544 ev_fork_init (&w->fork, embed_fork_cb); 5144 ev_fork_init (&w->fork, embed_fork_cb);
4545 ev_fork_start (EV_A_ &w->fork); 5145 ev_fork_start (EV_A_ &w->fork);
5146#endif
4546 5147
4547 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 5148 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
4548 5149
4549 ev_start (EV_A_ (W)w, 1); 5150 ev_start (EV_A_ (W)w, 1);
4550 5151
4551 EV_FREQUENT_CHECK; 5152 EV_FREQUENT_CHECK;
4552} 5153}
4553 5154
4554void 5155void
4555ev_embed_stop (EV_P_ ev_embed *w) EV_THROW 5156ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
4556{ 5157{
4557 clear_pending (EV_A_ (W)w); 5158 clear_pending (EV_A_ (W)w);
4558 if (expect_false (!ev_is_active (w))) 5159 if (ecb_expect_false (!ev_is_active (w)))
4559 return; 5160 return;
4560 5161
4561 EV_FREQUENT_CHECK; 5162 EV_FREQUENT_CHECK;
4562 5163
4563 ev_io_stop (EV_A_ &w->io); 5164 ev_io_stop (EV_A_ &w->io);
4564 ev_prepare_stop (EV_A_ &w->prepare); 5165 ev_prepare_stop (EV_A_ &w->prepare);
5166#if EV_FORK_ENABLE
4565 ev_fork_stop (EV_A_ &w->fork); 5167 ev_fork_stop (EV_A_ &w->fork);
5168#endif
4566 5169
4567 ev_stop (EV_A_ (W)w); 5170 ev_stop (EV_A_ (W)w);
4568 5171
4569 EV_FREQUENT_CHECK; 5172 EV_FREQUENT_CHECK;
4570} 5173}
4571#endif 5174#endif
4572 5175
4573#if EV_FORK_ENABLE 5176#if EV_FORK_ENABLE
4574void 5177void
4575ev_fork_start (EV_P_ ev_fork *w) EV_THROW 5178ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
4576{ 5179{
4577 if (expect_false (ev_is_active (w))) 5180 if (ecb_expect_false (ev_is_active (w)))
4578 return; 5181 return;
4579 5182
4580 EV_FREQUENT_CHECK; 5183 EV_FREQUENT_CHECK;
4581 5184
4582 ev_start (EV_A_ (W)w, ++forkcnt); 5185 ev_start (EV_A_ (W)w, ++forkcnt);
4583 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5186 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
4584 forks [forkcnt - 1] = w; 5187 forks [forkcnt - 1] = w;
4585 5188
4586 EV_FREQUENT_CHECK; 5189 EV_FREQUENT_CHECK;
4587} 5190}
4588 5191
4589void 5192void
4590ev_fork_stop (EV_P_ ev_fork *w) EV_THROW 5193ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
4591{ 5194{
4592 clear_pending (EV_A_ (W)w); 5195 clear_pending (EV_A_ (W)w);
4593 if (expect_false (!ev_is_active (w))) 5196 if (ecb_expect_false (!ev_is_active (w)))
4594 return; 5197 return;
4595 5198
4596 EV_FREQUENT_CHECK; 5199 EV_FREQUENT_CHECK;
4597 5200
4598 { 5201 {
… …
4608} 5211}
4609#endif 5212#endif
4610 5213
4611#if EV_CLEANUP_ENABLE 5214#if EV_CLEANUP_ENABLE
4612void 5215void
4613ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW 5216ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4614{ 5217{
4615 if (expect_false (ev_is_active (w))) 5218 if (ecb_expect_false (ev_is_active (w)))
4616 return; 5219 return;
4617 5220
4618 EV_FREQUENT_CHECK; 5221 EV_FREQUENT_CHECK;
4619 5222
4620 ev_start (EV_A_ (W)w, ++cleanupcnt); 5223 ev_start (EV_A_ (W)w, ++cleanupcnt);
4621 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 5224 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
4622 cleanups [cleanupcnt - 1] = w; 5225 cleanups [cleanupcnt - 1] = w;
4623 5226
4624 /* cleanup watchers should never keep a refcount on the loop */ 5227 /* cleanup watchers should never keep a refcount on the loop */
4625 ev_unref (EV_A); 5228 ev_unref (EV_A);
4626 EV_FREQUENT_CHECK; 5229 EV_FREQUENT_CHECK;
4627} 5230}
4628 5231
4629void 5232void
4630ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW 5233ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4631{ 5234{
4632 clear_pending (EV_A_ (W)w); 5235 clear_pending (EV_A_ (W)w);
4633 if (expect_false (!ev_is_active (w))) 5236 if (ecb_expect_false (!ev_is_active (w)))
4634 return; 5237 return;
4635 5238
4636 EV_FREQUENT_CHECK; 5239 EV_FREQUENT_CHECK;
4637 ev_ref (EV_A); 5240 ev_ref (EV_A);
4638 5241
… …
4649} 5252}
4650#endif 5253#endif
4651 5254
4652#if EV_ASYNC_ENABLE 5255#if EV_ASYNC_ENABLE
4653void 5256void
4654ev_async_start (EV_P_ ev_async *w) EV_THROW 5257ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4655{ 5258{
4656 if (expect_false (ev_is_active (w))) 5259 if (ecb_expect_false (ev_is_active (w)))
4657 return; 5260 return;
4658 5261
4659 w->sent = 0; 5262 w->sent = 0;
4660 5263
4661 evpipe_init (EV_A); 5264 evpipe_init (EV_A);
4662 5265
4663 EV_FREQUENT_CHECK; 5266 EV_FREQUENT_CHECK;
4664 5267
4665 ev_start (EV_A_ (W)w, ++asynccnt); 5268 ev_start (EV_A_ (W)w, ++asynccnt);
4666 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5269 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
4667 asyncs [asynccnt - 1] = w; 5270 asyncs [asynccnt - 1] = w;
4668 5271
4669 EV_FREQUENT_CHECK; 5272 EV_FREQUENT_CHECK;
4670} 5273}
4671 5274
4672void 5275void
4673ev_async_stop (EV_P_ ev_async *w) EV_THROW 5276ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4674{ 5277{
4675 clear_pending (EV_A_ (W)w); 5278 clear_pending (EV_A_ (W)w);
4676 if (expect_false (!ev_is_active (w))) 5279 if (ecb_expect_false (!ev_is_active (w)))
4677 return; 5280 return;
4678 5281
4679 EV_FREQUENT_CHECK; 5282 EV_FREQUENT_CHECK;
4680 5283
4681 { 5284 {
… …
4689 5292
4690 EV_FREQUENT_CHECK; 5293 EV_FREQUENT_CHECK;
4691} 5294}
4692 5295
4693void 5296void
4694ev_async_send (EV_P_ ev_async *w) EV_THROW 5297ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
4695{ 5298{
4696 w->sent = 1; 5299 w->sent = 1;
4697 evpipe_write (EV_A_ &async_pending); 5300 evpipe_write (EV_A_ &async_pending);
4698} 5301}
4699#endif 5302#endif
… …
4736 5339
4737 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5340 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
4738} 5341}
4739 5342
4740void 5343void
4741ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW 5344ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
4742{ 5345{
4743 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5346 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
4744
4745 if (expect_false (!once))
4746 {
4747 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
4748 return;
4749 }
4750 5347
4751 once->cb = cb; 5348 once->cb = cb;
4752 once->arg = arg; 5349 once->arg = arg;
4753 5350
4754 ev_init (&once->io, once_cb_io); 5351 ev_init (&once->io, once_cb_io);
… …
4767} 5364}
4768 5365
4769/*****************************************************************************/ 5366/*****************************************************************************/
4770 5367
4771#if EV_WALK_ENABLE 5368#if EV_WALK_ENABLE
4772void ecb_cold 5369ecb_cold
5370void
4773ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW 5371ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
4774{ 5372{
4775 int i, j; 5373 int i, j;
4776 ev_watcher_list *wl, *wn; 5374 ev_watcher_list *wl, *wn;
4777 5375
4778 if (types & (EV_IO | EV_EMBED)) 5376 if (types & (EV_IO | EV_EMBED))

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