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Comparing libev/ev.c (file contents):
Revision 1.475 by sf-exg, Wed Apr 1 06:57:41 2015 UTC vs.
Revision 1.526 by root, Wed Jan 22 17:11:33 2020 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010,2011,2012,2013 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007-2019 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
… …
115# else 115# else
116# undef EV_USE_EPOLL 116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0 117# define EV_USE_EPOLL 0
118# endif 118# endif
119 119
120# if HAVE_LINUX_AIO_ABI_H
121# ifndef EV_USE_LINUXAIO
122# define EV_USE_LINUXAIO 0 /* was: EV_FEATURE_BACKENDS, always off by default */
123# endif
124# else
125# undef EV_USE_LINUXAIO
126# define EV_USE_LINUXAIO 0
127# endif
128
129# if HAVE_LINUX_FS_H && HAVE_SYS_TIMERFD_H && HAVE_KERNEL_RWF_T
130# ifndef EV_USE_IOURING
131# define EV_USE_IOURING EV_FEATURE_BACKENDS
132# endif
133# else
134# undef EV_USE_IOURING
135# define EV_USE_IOURING 0
136# endif
137
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H 138# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
121# ifndef EV_USE_KQUEUE 139# ifndef EV_USE_KQUEUE
122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS 140# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
123# endif 141# endif
124# else 142# else
… …
159# endif 177# endif
160# else 178# else
161# undef EV_USE_EVENTFD 179# undef EV_USE_EVENTFD
162# define EV_USE_EVENTFD 0 180# define EV_USE_EVENTFD 0
163# endif 181# endif
164 182
183# if HAVE_SYS_TIMERFD_H
184# ifndef EV_USE_TIMERFD
185# define EV_USE_TIMERFD EV_FEATURE_OS
186# endif
187# else
188# undef EV_USE_TIMERFD
189# define EV_USE_TIMERFD 0
165#endif 190# endif
191
192#endif
193
194/* OS X, in its infinite idiocy, actually HARDCODES
195 * a limit of 1024 into their select. Where people have brains,
196 * OS X engineers apparently have a vacuum. Or maybe they were
197 * ordered to have a vacuum, or they do anything for money.
198 * This might help. Or not.
199 * Note that this must be defined early, as other include files
200 * will rely on this define as well.
201 */
202#define _DARWIN_UNLIMITED_SELECT 1
166 203
167#include <stdlib.h> 204#include <stdlib.h>
168#include <string.h> 205#include <string.h>
169#include <fcntl.h> 206#include <fcntl.h>
170#include <stddef.h> 207#include <stddef.h>
… …
208# ifndef EV_SELECT_IS_WINSOCKET 245# ifndef EV_SELECT_IS_WINSOCKET
209# define EV_SELECT_IS_WINSOCKET 1 246# define EV_SELECT_IS_WINSOCKET 1
210# endif 247# endif
211# undef EV_AVOID_STDIO 248# undef EV_AVOID_STDIO
212#endif 249#endif
213
214/* OS X, in its infinite idiocy, actually HARDCODES
215 * a limit of 1024 into their select. Where people have brains,
216 * OS X engineers apparently have a vacuum. Or maybe they were
217 * ordered to have a vacuum, or they do anything for money.
218 * This might help. Or not.
219 */
220#define _DARWIN_UNLIMITED_SELECT 1
221 250
222/* this block tries to deduce configuration from header-defined symbols and defaults */ 251/* this block tries to deduce configuration from header-defined symbols and defaults */
223 252
224/* try to deduce the maximum number of signals on this platform */ 253/* try to deduce the maximum number of signals on this platform */
225#if defined EV_NSIG 254#if defined EV_NSIG
… …
313 342
314#ifndef EV_USE_PORT 343#ifndef EV_USE_PORT
315# define EV_USE_PORT 0 344# define EV_USE_PORT 0
316#endif 345#endif
317 346
347#ifndef EV_USE_LINUXAIO
348# if __linux /* libev currently assumes linux/aio_abi.h is always available on linux */
349# define EV_USE_LINUXAIO 0 /* was: 1, always off by default */
350# else
351# define EV_USE_LINUXAIO 0
352# endif
353#endif
354
355#ifndef EV_USE_IOURING
356# if __linux /* later checks might disable again */
357# define EV_USE_IOURING 1
358# else
359# define EV_USE_IOURING 0
360# endif
361#endif
362
318#ifndef EV_USE_INOTIFY 363#ifndef EV_USE_INOTIFY
319# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 364# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
320# define EV_USE_INOTIFY EV_FEATURE_OS 365# define EV_USE_INOTIFY EV_FEATURE_OS
321# else 366# else
322# define EV_USE_INOTIFY 0 367# define EV_USE_INOTIFY 0
… …
345# else 390# else
346# define EV_USE_SIGNALFD 0 391# define EV_USE_SIGNALFD 0
347# endif 392# endif
348#endif 393#endif
349 394
395#ifndef EV_USE_TIMERFD
396# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 8))
397# define EV_USE_TIMERFD EV_FEATURE_OS
398# else
399# define EV_USE_TIMERFD 0
400# endif
401#endif
402
350#if 0 /* debugging */ 403#if 0 /* debugging */
351# define EV_VERIFY 3 404# define EV_VERIFY 3
352# define EV_USE_4HEAP 1 405# define EV_USE_4HEAP 1
353# define EV_HEAP_CACHE_AT 1 406# define EV_HEAP_CACHE_AT 1
354#endif 407#endif
… …
363 416
364#ifndef EV_HEAP_CACHE_AT 417#ifndef EV_HEAP_CACHE_AT
365# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 418# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
366#endif 419#endif
367 420
368#ifdef ANDROID 421#ifdef __ANDROID__
369/* supposedly, android doesn't typedef fd_mask */ 422/* supposedly, android doesn't typedef fd_mask */
370# undef EV_USE_SELECT 423# undef EV_USE_SELECT
371# define EV_USE_SELECT 0 424# define EV_USE_SELECT 0
372/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */ 425/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
373# undef EV_USE_CLOCK_SYSCALL 426# undef EV_USE_CLOCK_SYSCALL
… …
387# include <sys/syscall.h> 440# include <sys/syscall.h>
388# ifdef SYS_clock_gettime 441# ifdef SYS_clock_gettime
389# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 442# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
390# undef EV_USE_MONOTONIC 443# undef EV_USE_MONOTONIC
391# define EV_USE_MONOTONIC 1 444# define EV_USE_MONOTONIC 1
445# define EV_NEED_SYSCALL 1
392# else 446# else
393# undef EV_USE_CLOCK_SYSCALL 447# undef EV_USE_CLOCK_SYSCALL
394# define EV_USE_CLOCK_SYSCALL 0 448# define EV_USE_CLOCK_SYSCALL 0
395# endif 449# endif
396#endif 450#endif
… …
410#if !EV_STAT_ENABLE 464#if !EV_STAT_ENABLE
411# undef EV_USE_INOTIFY 465# undef EV_USE_INOTIFY
412# define EV_USE_INOTIFY 0 466# define EV_USE_INOTIFY 0
413#endif 467#endif
414 468
469#if __linux && EV_USE_IOURING
470# include <linux/version.h>
471# if LINUX_VERSION_CODE < KERNEL_VERSION(4,14,0)
472# undef EV_USE_IOURING
473# define EV_USE_IOURING 0
474# endif
475#endif
476
415#if !EV_USE_NANOSLEEP 477#if !EV_USE_NANOSLEEP
416/* hp-ux has it in sys/time.h, which we unconditionally include above */ 478/* hp-ux has it in sys/time.h, which we unconditionally include above */
417# if !defined _WIN32 && !defined __hpux 479# if !defined _WIN32 && !defined __hpux
418# include <sys/select.h> 480# include <sys/select.h>
481# endif
482#endif
483
484#if EV_USE_LINUXAIO
485# include <sys/syscall.h>
486# if SYS_io_getevents && EV_USE_EPOLL /* linuxaio backend requires epoll backend */
487# define EV_NEED_SYSCALL 1
488# else
489# undef EV_USE_LINUXAIO
490# define EV_USE_LINUXAIO 0
491# endif
492#endif
493
494#if EV_USE_IOURING
495# include <sys/syscall.h>
496# if !SYS_io_uring_setup && __linux && !__alpha
497# define SYS_io_uring_setup 425
498# define SYS_io_uring_enter 426
499# define SYS_io_uring_wregister 427
500# endif
501# if SYS_io_uring_setup && EV_USE_EPOLL /* iouring backend requires epoll backend */
502# define EV_NEED_SYSCALL 1
503# else
504# undef EV_USE_IOURING
505# define EV_USE_IOURING 0
419# endif 506# endif
420#endif 507#endif
421 508
422#if EV_USE_INOTIFY 509#if EV_USE_INOTIFY
423# include <sys/statfs.h> 510# include <sys/statfs.h>
… …
428# define EV_USE_INOTIFY 0 515# define EV_USE_INOTIFY 0
429# endif 516# endif
430#endif 517#endif
431 518
432#if EV_USE_EVENTFD 519#if EV_USE_EVENTFD
433/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 520/* our minimum requirement is glibc 2.7 which has the stub, but not the full header */
434# include <stdint.h> 521# include <stdint.h>
435# ifndef EFD_NONBLOCK 522# ifndef EFD_NONBLOCK
436# define EFD_NONBLOCK O_NONBLOCK 523# define EFD_NONBLOCK O_NONBLOCK
437# endif 524# endif
438# ifndef EFD_CLOEXEC 525# ifndef EFD_CLOEXEC
… …
444# endif 531# endif
445EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags); 532EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
446#endif 533#endif
447 534
448#if EV_USE_SIGNALFD 535#if EV_USE_SIGNALFD
449/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 536/* our minimum requirement is glibc 2.7 which has the stub, but not the full header */
450# include <stdint.h> 537# include <stdint.h>
451# ifndef SFD_NONBLOCK 538# ifndef SFD_NONBLOCK
452# define SFD_NONBLOCK O_NONBLOCK 539# define SFD_NONBLOCK O_NONBLOCK
453# endif 540# endif
454# ifndef SFD_CLOEXEC 541# ifndef SFD_CLOEXEC
… …
456# define SFD_CLOEXEC O_CLOEXEC 543# define SFD_CLOEXEC O_CLOEXEC
457# else 544# else
458# define SFD_CLOEXEC 02000000 545# define SFD_CLOEXEC 02000000
459# endif 546# endif
460# endif 547# endif
461EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags); 548EV_CPP (extern "C") int (signalfd) (int fd, const sigset_t *mask, int flags);
462 549
463struct signalfd_siginfo 550struct signalfd_siginfo
464{ 551{
465 uint32_t ssi_signo; 552 uint32_t ssi_signo;
466 char pad[128 - sizeof (uint32_t)]; 553 char pad[128 - sizeof (uint32_t)];
467}; 554};
468#endif 555#endif
469 556
470/**/ 557/* for timerfd, libev core requires TFD_TIMER_CANCEL_ON_SET &c */
558#if EV_USE_TIMERFD
559# include <sys/timerfd.h>
560/* timerfd is only used for periodics */
561# if !(defined (TFD_TIMER_CANCEL_ON_SET) && defined (TFD_CLOEXEC) && defined (TFD_NONBLOCK)) || !EV_PERIODIC_ENABLE
562# undef EV_USE_TIMERFD
563# define EV_USE_TIMERFD 0
564# endif
565#endif
566
567/*****************************************************************************/
471 568
472#if EV_VERIFY >= 3 569#if EV_VERIFY >= 3
473# define EV_FREQUENT_CHECK ev_verify (EV_A) 570# define EV_FREQUENT_CHECK ev_verify (EV_A)
474#else 571#else
475# define EV_FREQUENT_CHECK do { } while (0) 572# define EV_FREQUENT_CHECK do { } while (0)
… …
480 * This value is good at least till the year 4000. 577 * This value is good at least till the year 4000.
481 */ 578 */
482#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */ 579#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
483/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */ 580/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
484 581
485#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 582#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
486#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 583#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
584#define MAX_BLOCKTIME2 1500001.07 /* same, but when timerfd is used to detect jumps, also safe delay to not overflow */
487 585
586/* find a portable timestamp that is "always" in the future but fits into time_t.
587 * this is quite hard, and we are mostly guessing - we handle 32 bit signed/unsigned time_t,
588 * and sizes larger than 32 bit, and maybe the unlikely floating point time_t */
589#define EV_TSTAMP_HUGE \
590 (sizeof (time_t) >= 8 ? 10000000000000. \
591 : 0 < (time_t)4294967295 ? 4294967295. \
592 : 2147483647.) \
593
594#ifndef EV_TS_CONST
595# define EV_TS_CONST(nv) nv
596# define EV_TS_TO_MSEC(a) a * 1e3 + 0.9999
597# define EV_TS_FROM_USEC(us) us * 1e-6
488#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) 598# define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
489#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0) 599# define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
600# define EV_TV_GET(tv) ((tv).tv_sec + (tv).tv_usec * 1e-6)
601# define EV_TS_GET(ts) ((ts).tv_sec + (ts).tv_nsec * 1e-9)
602#endif
490 603
491/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ 604/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
492/* ECB.H BEGIN */ 605/* ECB.H BEGIN */
493/* 606/*
494 * libecb - http://software.schmorp.de/pkg/libecb 607 * libecb - http://software.schmorp.de/pkg/libecb
495 * 608 *
496 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de> 609 * Copyright (©) 2009-2015,2018-2020 Marc Alexander Lehmann <libecb@schmorp.de>
497 * Copyright (©) 2011 Emanuele Giaquinta 610 * Copyright (©) 2011 Emanuele Giaquinta
498 * All rights reserved. 611 * All rights reserved.
499 * 612 *
500 * Redistribution and use in source and binary forms, with or without modifica- 613 * Redistribution and use in source and binary forms, with or without modifica-
501 * tion, are permitted provided that the following conditions are met: 614 * tion, are permitted provided that the following conditions are met:
… …
532 645
533#ifndef ECB_H 646#ifndef ECB_H
534#define ECB_H 647#define ECB_H
535 648
536/* 16 bits major, 16 bits minor */ 649/* 16 bits major, 16 bits minor */
537#define ECB_VERSION 0x00010004 650#define ECB_VERSION 0x00010008
651
652#include <string.h> /* for memcpy */
538 653
539#ifdef _WIN32 654#ifdef _WIN32
540 typedef signed char int8_t; 655 typedef signed char int8_t;
541 typedef unsigned char uint8_t; 656 typedef unsigned char uint8_t;
657 typedef signed char int_fast8_t;
658 typedef unsigned char uint_fast8_t;
542 typedef signed short int16_t; 659 typedef signed short int16_t;
543 typedef unsigned short uint16_t; 660 typedef unsigned short uint16_t;
661 typedef signed int int_fast16_t;
662 typedef unsigned int uint_fast16_t;
544 typedef signed int int32_t; 663 typedef signed int int32_t;
545 typedef unsigned int uint32_t; 664 typedef unsigned int uint32_t;
665 typedef signed int int_fast32_t;
666 typedef unsigned int uint_fast32_t;
546 #if __GNUC__ 667 #if __GNUC__
547 typedef signed long long int64_t; 668 typedef signed long long int64_t;
548 typedef unsigned long long uint64_t; 669 typedef unsigned long long uint64_t;
549 #else /* _MSC_VER || __BORLANDC__ */ 670 #else /* _MSC_VER || __BORLANDC__ */
550 typedef signed __int64 int64_t; 671 typedef signed __int64 int64_t;
551 typedef unsigned __int64 uint64_t; 672 typedef unsigned __int64 uint64_t;
552 #endif 673 #endif
674 typedef int64_t int_fast64_t;
675 typedef uint64_t uint_fast64_t;
553 #ifdef _WIN64 676 #ifdef _WIN64
554 #define ECB_PTRSIZE 8 677 #define ECB_PTRSIZE 8
555 typedef uint64_t uintptr_t; 678 typedef uint64_t uintptr_t;
556 typedef int64_t intptr_t; 679 typedef int64_t intptr_t;
557 #else 680 #else
… …
559 typedef uint32_t uintptr_t; 682 typedef uint32_t uintptr_t;
560 typedef int32_t intptr_t; 683 typedef int32_t intptr_t;
561 #endif 684 #endif
562#else 685#else
563 #include <inttypes.h> 686 #include <inttypes.h>
564 #if UINTMAX_MAX > 0xffffffffU 687 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
565 #define ECB_PTRSIZE 8 688 #define ECB_PTRSIZE 8
566 #else 689 #else
567 #define ECB_PTRSIZE 4 690 #define ECB_PTRSIZE 4
568 #endif 691 #endif
569#endif 692#endif
570 693
571#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__) 694#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
572#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64) 695#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
696
697#ifndef ECB_OPTIMIZE_SIZE
698 #if __OPTIMIZE_SIZE__
699 #define ECB_OPTIMIZE_SIZE 1
700 #else
701 #define ECB_OPTIMIZE_SIZE 0
702 #endif
703#endif
573 704
574/* work around x32 idiocy by defining proper macros */ 705/* work around x32 idiocy by defining proper macros */
575#if ECB_GCC_AMD64 || ECB_MSVC_AMD64 706#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
576 #if _ILP32 707 #if _ILP32
577 #define ECB_AMD64_X32 1 708 #define ECB_AMD64_X32 1
… …
607 #define ECB_CLANG_EXTENSION(x) 0 738 #define ECB_CLANG_EXTENSION(x) 0
608#endif 739#endif
609 740
610#define ECB_CPP (__cplusplus+0) 741#define ECB_CPP (__cplusplus+0)
611#define ECB_CPP11 (__cplusplus >= 201103L) 742#define ECB_CPP11 (__cplusplus >= 201103L)
743#define ECB_CPP14 (__cplusplus >= 201402L)
744#define ECB_CPP17 (__cplusplus >= 201703L)
612 745
613#if ECB_CPP 746#if ECB_CPP
614 #define ECB_C 0 747 #define ECB_C 0
615 #define ECB_STDC_VERSION 0 748 #define ECB_STDC_VERSION 0
616#else 749#else
… …
618 #define ECB_STDC_VERSION __STDC_VERSION__ 751 #define ECB_STDC_VERSION __STDC_VERSION__
619#endif 752#endif
620 753
621#define ECB_C99 (ECB_STDC_VERSION >= 199901L) 754#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
622#define ECB_C11 (ECB_STDC_VERSION >= 201112L) 755#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
756#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
623 757
624#if ECB_CPP 758#if ECB_CPP
625 #define ECB_EXTERN_C extern "C" 759 #define ECB_EXTERN_C extern "C"
626 #define ECB_EXTERN_C_BEG ECB_EXTERN_C { 760 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
627 #define ECB_EXTERN_C_END } 761 #define ECB_EXTERN_C_END }
… …
642 776
643#if ECB_NO_SMP 777#if ECB_NO_SMP
644 #define ECB_MEMORY_FENCE do { } while (0) 778 #define ECB_MEMORY_FENCE do { } while (0)
645#endif 779#endif
646 780
781/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
782#if __xlC__ && ECB_CPP
783 #include <builtins.h>
784#endif
785
786#if 1400 <= _MSC_VER
787 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
788#endif
789
647#ifndef ECB_MEMORY_FENCE 790#ifndef ECB_MEMORY_FENCE
648 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 791 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
792 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
649 #if __i386 || __i386__ 793 #if __i386 || __i386__
650 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") 794 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
651 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") 795 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
652 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 796 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
653 #elif ECB_GCC_AMD64 797 #elif ECB_GCC_AMD64
654 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 798 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
655 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") 799 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
656 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 800 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
657 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 801 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
658 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 802 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
803 #elif defined __ARM_ARCH_2__ \
804 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
805 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
806 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
807 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
808 || defined __ARM_ARCH_5TEJ__
809 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
659 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \ 810 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
660 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ 811 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
812 || defined __ARM_ARCH_6T2__
661 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") 813 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
662 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \ 814 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
663 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__ 815 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
664 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") 816 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
665 #elif __aarch64__ 817 #elif __aarch64__
666 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory") 818 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
667 #elif (__sparc || __sparc__) && !__sparcv8 819 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
668 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory") 820 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
669 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") 821 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
670 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") 822 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
671 #elif defined __s390__ || defined __s390x__ 823 #elif defined __s390__ || defined __s390x__
672 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") 824 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
… …
695 #if ECB_GCC_VERSION(4,7) 847 #if ECB_GCC_VERSION(4,7)
696 /* see comment below (stdatomic.h) about the C11 memory model. */ 848 /* see comment below (stdatomic.h) about the C11 memory model. */
697 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST) 849 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
698 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE) 850 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
699 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE) 851 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
852 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
700 853
701 #elif ECB_CLANG_EXTENSION(c_atomic) 854 #elif ECB_CLANG_EXTENSION(c_atomic)
702 /* see comment below (stdatomic.h) about the C11 memory model. */ 855 /* see comment below (stdatomic.h) about the C11 memory model. */
703 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) 856 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
704 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE) 857 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
705 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE) 858 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
859 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
706 860
707 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ 861 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
708 #define ECB_MEMORY_FENCE __sync_synchronize () 862 #define ECB_MEMORY_FENCE __sync_synchronize ()
709 #elif _MSC_VER >= 1500 /* VC++ 2008 */ 863 #elif _MSC_VER >= 1500 /* VC++ 2008 */
710 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */ 864 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
… …
720 #elif defined _WIN32 874 #elif defined _WIN32
721 #include <WinNT.h> 875 #include <WinNT.h>
722 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ 876 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
723 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 877 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
724 #include <mbarrier.h> 878 #include <mbarrier.h>
725 #define ECB_MEMORY_FENCE __machine_rw_barrier () 879 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
726 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier () 880 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
727 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier () 881 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
882 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
728 #elif __xlC__ 883 #elif __xlC__
729 #define ECB_MEMORY_FENCE __sync () 884 #define ECB_MEMORY_FENCE __sync ()
730 #endif 885 #endif
731#endif 886#endif
732 887
733#ifndef ECB_MEMORY_FENCE 888#ifndef ECB_MEMORY_FENCE
734 #if ECB_C11 && !defined __STDC_NO_ATOMICS__ 889 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
735 /* we assume that these memory fences work on all variables/all memory accesses, */ 890 /* we assume that these memory fences work on all variables/all memory accesses, */
736 /* not just C11 atomics and atomic accesses */ 891 /* not just C11 atomics and atomic accesses */
737 #include <stdatomic.h> 892 #include <stdatomic.h>
738 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
739 /* any fence other than seq_cst, which isn't very efficient for us. */
740 /* Why that is, we don't know - either the C11 memory model is quite useless */
741 /* for most usages, or gcc and clang have a bug */
742 /* I *currently* lean towards the latter, and inefficiently implement */
743 /* all three of ecb's fences as a seq_cst fence */
744 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
745 /* for all __atomic_thread_fence's except seq_cst */
746 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst) 893 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
894 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
895 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
747 #endif 896 #endif
748#endif 897#endif
749 898
750#ifndef ECB_MEMORY_FENCE 899#ifndef ECB_MEMORY_FENCE
751 #if !ECB_AVOID_PTHREADS 900 #if !ECB_AVOID_PTHREADS
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771 920
772#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE 921#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
773 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 922 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
774#endif 923#endif
775 924
925#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
926 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
927#endif
928
776/*****************************************************************************/ 929/*****************************************************************************/
777 930
778#if ECB_CPP 931#if ECB_CPP
779 #define ecb_inline static inline 932 #define ecb_inline static inline
780#elif ECB_GCC_VERSION(2,5) 933#elif ECB_GCC_VERSION(2,5)
… …
844 #define ecb_deprecated __declspec (deprecated) 997 #define ecb_deprecated __declspec (deprecated)
845#else 998#else
846 #define ecb_deprecated ecb_attribute ((__deprecated__)) 999 #define ecb_deprecated ecb_attribute ((__deprecated__))
847#endif 1000#endif
848 1001
849#if __MSC_VER >= 1500 1002#if _MSC_VER >= 1500
850 #define ecb_deprecated_message(msg) __declspec (deprecated (msg)) 1003 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
851#elif ECB_GCC_VERSION(4,5) 1004#elif ECB_GCC_VERSION(4,5)
852 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg)) 1005 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
853#else 1006#else
854 #define ecb_deprecated_message(msg) ecb_deprecated 1007 #define ecb_deprecated_message(msg) ecb_deprecated
… …
863#define ecb_unused ecb_attribute ((__unused__)) 1016#define ecb_unused ecb_attribute ((__unused__))
864#define ecb_const ecb_attribute ((__const__)) 1017#define ecb_const ecb_attribute ((__const__))
865#define ecb_pure ecb_attribute ((__pure__)) 1018#define ecb_pure ecb_attribute ((__pure__))
866 1019
867#if ECB_C11 || __IBMC_NORETURN 1020#if ECB_C11 || __IBMC_NORETURN
868 /* http://pic.dhe.ibm.com/infocenter/compbg/v121v141/topic/com.ibm.xlcpp121.bg.doc/language_ref/noreturn.html */ 1021 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
869 #define ecb_noreturn _Noreturn 1022 #define ecb_noreturn _Noreturn
870#elif ECB_CPP11 1023#elif ECB_CPP11
871 #define ecb_noreturn [[noreturn]] 1024 #define ecb_noreturn [[noreturn]]
872#elif _MSC_VER >= 1200 1025#elif _MSC_VER >= 1200
873 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */ 1026 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
… …
910#else 1063#else
911 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x); 1064 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
912 ecb_function_ ecb_const int 1065 ecb_function_ ecb_const int
913 ecb_ctz32 (uint32_t x) 1066 ecb_ctz32 (uint32_t x)
914 { 1067 {
1068#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1069 unsigned long r;
1070 _BitScanForward (&r, x);
1071 return (int)r;
1072#else
915 int r = 0; 1073 int r = 0;
916 1074
917 x &= ~x + 1; /* this isolates the lowest bit */ 1075 x &= ~x + 1; /* this isolates the lowest bit */
918 1076
919#if ECB_branchless_on_i386 1077#if ECB_branchless_on_i386
… …
929 if (x & 0xff00ff00) r += 8; 1087 if (x & 0xff00ff00) r += 8;
930 if (x & 0xffff0000) r += 16; 1088 if (x & 0xffff0000) r += 16;
931#endif 1089#endif
932 1090
933 return r; 1091 return r;
1092#endif
934 } 1093 }
935 1094
936 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x); 1095 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
937 ecb_function_ ecb_const int 1096 ecb_function_ ecb_const int
938 ecb_ctz64 (uint64_t x) 1097 ecb_ctz64 (uint64_t x)
939 { 1098 {
1099#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1100 unsigned long r;
1101 _BitScanForward64 (&r, x);
1102 return (int)r;
1103#else
940 int shift = x & 0xffffffffU ? 0 : 32; 1104 int shift = x & 0xffffffff ? 0 : 32;
941 return ecb_ctz32 (x >> shift) + shift; 1105 return ecb_ctz32 (x >> shift) + shift;
1106#endif
942 } 1107 }
943 1108
944 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x); 1109 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
945 ecb_function_ ecb_const int 1110 ecb_function_ ecb_const int
946 ecb_popcount32 (uint32_t x) 1111 ecb_popcount32 (uint32_t x)
… …
954 } 1119 }
955 1120
956 ecb_function_ ecb_const int ecb_ld32 (uint32_t x); 1121 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
957 ecb_function_ ecb_const int ecb_ld32 (uint32_t x) 1122 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
958 { 1123 {
1124#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1125 unsigned long r;
1126 _BitScanReverse (&r, x);
1127 return (int)r;
1128#else
959 int r = 0; 1129 int r = 0;
960 1130
961 if (x >> 16) { x >>= 16; r += 16; } 1131 if (x >> 16) { x >>= 16; r += 16; }
962 if (x >> 8) { x >>= 8; r += 8; } 1132 if (x >> 8) { x >>= 8; r += 8; }
963 if (x >> 4) { x >>= 4; r += 4; } 1133 if (x >> 4) { x >>= 4; r += 4; }
964 if (x >> 2) { x >>= 2; r += 2; } 1134 if (x >> 2) { x >>= 2; r += 2; }
965 if (x >> 1) { r += 1; } 1135 if (x >> 1) { r += 1; }
966 1136
967 return r; 1137 return r;
1138#endif
968 } 1139 }
969 1140
970 ecb_function_ ecb_const int ecb_ld64 (uint64_t x); 1141 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
971 ecb_function_ ecb_const int ecb_ld64 (uint64_t x) 1142 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
972 { 1143 {
1144#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1145 unsigned long r;
1146 _BitScanReverse64 (&r, x);
1147 return (int)r;
1148#else
973 int r = 0; 1149 int r = 0;
974 1150
975 if (x >> 32) { x >>= 32; r += 32; } 1151 if (x >> 32) { x >>= 32; r += 32; }
976 1152
977 return r + ecb_ld32 (x); 1153 return r + ecb_ld32 (x);
1154#endif
978 } 1155 }
979#endif 1156#endif
980 1157
981ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x); 1158ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
982ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); } 1159ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
… …
1038ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } 1215ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1039ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } 1216ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1040ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } 1217ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1041ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } 1218ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1042 1219
1220#if ECB_CPP
1221
1222inline uint8_t ecb_ctz (uint8_t v) { return ecb_ctz32 (v); }
1223inline uint16_t ecb_ctz (uint16_t v) { return ecb_ctz32 (v); }
1224inline uint32_t ecb_ctz (uint32_t v) { return ecb_ctz32 (v); }
1225inline uint64_t ecb_ctz (uint64_t v) { return ecb_ctz64 (v); }
1226
1227inline bool ecb_is_pot (uint8_t v) { return ecb_is_pot32 (v); }
1228inline bool ecb_is_pot (uint16_t v) { return ecb_is_pot32 (v); }
1229inline bool ecb_is_pot (uint32_t v) { return ecb_is_pot32 (v); }
1230inline bool ecb_is_pot (uint64_t v) { return ecb_is_pot64 (v); }
1231
1232inline int ecb_ld (uint8_t v) { return ecb_ld32 (v); }
1233inline int ecb_ld (uint16_t v) { return ecb_ld32 (v); }
1234inline int ecb_ld (uint32_t v) { return ecb_ld32 (v); }
1235inline int ecb_ld (uint64_t v) { return ecb_ld64 (v); }
1236
1237inline int ecb_popcount (uint8_t v) { return ecb_popcount32 (v); }
1238inline int ecb_popcount (uint16_t v) { return ecb_popcount32 (v); }
1239inline int ecb_popcount (uint32_t v) { return ecb_popcount32 (v); }
1240inline int ecb_popcount (uint64_t v) { return ecb_popcount64 (v); }
1241
1242inline uint8_t ecb_bitrev (uint8_t v) { return ecb_bitrev8 (v); }
1243inline uint16_t ecb_bitrev (uint16_t v) { return ecb_bitrev16 (v); }
1244inline uint32_t ecb_bitrev (uint32_t v) { return ecb_bitrev32 (v); }
1245
1246inline uint8_t ecb_rotl (uint8_t v, unsigned int count) { return ecb_rotl8 (v, count); }
1247inline uint16_t ecb_rotl (uint16_t v, unsigned int count) { return ecb_rotl16 (v, count); }
1248inline uint32_t ecb_rotl (uint32_t v, unsigned int count) { return ecb_rotl32 (v, count); }
1249inline uint64_t ecb_rotl (uint64_t v, unsigned int count) { return ecb_rotl64 (v, count); }
1250
1251inline uint8_t ecb_rotr (uint8_t v, unsigned int count) { return ecb_rotr8 (v, count); }
1252inline uint16_t ecb_rotr (uint16_t v, unsigned int count) { return ecb_rotr16 (v, count); }
1253inline uint32_t ecb_rotr (uint32_t v, unsigned int count) { return ecb_rotr32 (v, count); }
1254inline uint64_t ecb_rotr (uint64_t v, unsigned int count) { return ecb_rotr64 (v, count); }
1255
1256#endif
1257
1043#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64)) 1258#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1259 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1260 #define ecb_bswap16(x) __builtin_bswap16 (x)
1261 #else
1044 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 1262 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1263 #endif
1045 #define ecb_bswap32(x) __builtin_bswap32 (x) 1264 #define ecb_bswap32(x) __builtin_bswap32 (x)
1046 #define ecb_bswap64(x) __builtin_bswap64 (x) 1265 #define ecb_bswap64(x) __builtin_bswap64 (x)
1266#elif _MSC_VER
1267 #include <stdlib.h>
1268 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1269 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1270 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
1047#else 1271#else
1048 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x); 1272 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1049 ecb_function_ ecb_const uint16_t 1273 ecb_function_ ecb_const uint16_t
1050 ecb_bswap16 (uint16_t x) 1274 ecb_bswap16 (uint16_t x)
1051 { 1275 {
… …
1076#endif 1300#endif
1077 1301
1078/* try to tell the compiler that some condition is definitely true */ 1302/* try to tell the compiler that some condition is definitely true */
1079#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0 1303#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1080 1304
1081ecb_inline ecb_const unsigned char ecb_byteorder_helper (void); 1305ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1082ecb_inline ecb_const unsigned char 1306ecb_inline ecb_const uint32_t
1083ecb_byteorder_helper (void) 1307ecb_byteorder_helper (void)
1084{ 1308{
1085 /* the union code still generates code under pressure in gcc, */ 1309 /* the union code still generates code under pressure in gcc, */
1086 /* but less than using pointers, and always seems to */ 1310 /* but less than using pointers, and always seems to */
1087 /* successfully return a constant. */ 1311 /* successfully return a constant. */
1088 /* the reason why we have this horrible preprocessor mess */ 1312 /* the reason why we have this horrible preprocessor mess */
1089 /* is to avoid it in all cases, at least on common architectures */ 1313 /* is to avoid it in all cases, at least on common architectures */
1090 /* or when using a recent enough gcc version (>= 4.6) */ 1314 /* or when using a recent enough gcc version (>= 4.6) */
1091#if ((__i386 || __i386__) && !__VOS__) || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64
1092 return 0x44;
1093#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ 1315#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1316 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1317 #define ECB_LITTLE_ENDIAN 1
1094 return 0x44; 1318 return 0x44332211;
1095#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ 1319#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1320 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1321 #define ECB_BIG_ENDIAN 1
1096 return 0x11; 1322 return 0x11223344;
1097#else 1323#else
1098 union 1324 union
1099 { 1325 {
1326 uint8_t c[4];
1100 uint32_t i; 1327 uint32_t u;
1101 uint8_t c;
1102 } u = { 0x11223344 }; 1328 } u = { 0x11, 0x22, 0x33, 0x44 };
1103 return u.c; 1329 return u.u;
1104#endif 1330#endif
1105} 1331}
1106 1332
1107ecb_inline ecb_const ecb_bool ecb_big_endian (void); 1333ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1108ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } 1334ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1109ecb_inline ecb_const ecb_bool ecb_little_endian (void); 1335ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1110ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } 1336ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1337
1338/*****************************************************************************/
1339/* unaligned load/store */
1340
1341ecb_inline uint_fast16_t ecb_be_u16_to_host (uint_fast16_t v) { return ecb_little_endian () ? ecb_bswap16 (v) : v; }
1342ecb_inline uint_fast32_t ecb_be_u32_to_host (uint_fast32_t v) { return ecb_little_endian () ? ecb_bswap32 (v) : v; }
1343ecb_inline uint_fast64_t ecb_be_u64_to_host (uint_fast64_t v) { return ecb_little_endian () ? ecb_bswap64 (v) : v; }
1344
1345ecb_inline uint_fast16_t ecb_le_u16_to_host (uint_fast16_t v) { return ecb_big_endian () ? ecb_bswap16 (v) : v; }
1346ecb_inline uint_fast32_t ecb_le_u32_to_host (uint_fast32_t v) { return ecb_big_endian () ? ecb_bswap32 (v) : v; }
1347ecb_inline uint_fast64_t ecb_le_u64_to_host (uint_fast64_t v) { return ecb_big_endian () ? ecb_bswap64 (v) : v; }
1348
1349ecb_inline uint_fast16_t ecb_peek_u16_u (const void *ptr) { uint16_t v; memcpy (&v, ptr, sizeof (v)); return v; }
1350ecb_inline uint_fast32_t ecb_peek_u32_u (const void *ptr) { uint32_t v; memcpy (&v, ptr, sizeof (v)); return v; }
1351ecb_inline uint_fast64_t ecb_peek_u64_u (const void *ptr) { uint64_t v; memcpy (&v, ptr, sizeof (v)); return v; }
1352
1353ecb_inline uint_fast16_t ecb_peek_be_u16_u (const void *ptr) { return ecb_be_u16_to_host (ecb_peek_u16_u (ptr)); }
1354ecb_inline uint_fast32_t ecb_peek_be_u32_u (const void *ptr) { return ecb_be_u32_to_host (ecb_peek_u32_u (ptr)); }
1355ecb_inline uint_fast64_t ecb_peek_be_u64_u (const void *ptr) { return ecb_be_u64_to_host (ecb_peek_u64_u (ptr)); }
1356
1357ecb_inline uint_fast16_t ecb_peek_le_u16_u (const void *ptr) { return ecb_le_u16_to_host (ecb_peek_u16_u (ptr)); }
1358ecb_inline uint_fast32_t ecb_peek_le_u32_u (const void *ptr) { return ecb_le_u32_to_host (ecb_peek_u32_u (ptr)); }
1359ecb_inline uint_fast64_t ecb_peek_le_u64_u (const void *ptr) { return ecb_le_u64_to_host (ecb_peek_u64_u (ptr)); }
1360
1361ecb_inline uint_fast16_t ecb_host_to_be_u16 (uint_fast16_t v) { return ecb_little_endian () ? ecb_bswap16 (v) : v; }
1362ecb_inline uint_fast32_t ecb_host_to_be_u32 (uint_fast32_t v) { return ecb_little_endian () ? ecb_bswap32 (v) : v; }
1363ecb_inline uint_fast64_t ecb_host_to_be_u64 (uint_fast64_t v) { return ecb_little_endian () ? ecb_bswap64 (v) : v; }
1364
1365ecb_inline uint_fast16_t ecb_host_to_le_u16 (uint_fast16_t v) { return ecb_big_endian () ? ecb_bswap16 (v) : v; }
1366ecb_inline uint_fast32_t ecb_host_to_le_u32 (uint_fast32_t v) { return ecb_big_endian () ? ecb_bswap32 (v) : v; }
1367ecb_inline uint_fast64_t ecb_host_to_le_u64 (uint_fast64_t v) { return ecb_big_endian () ? ecb_bswap64 (v) : v; }
1368
1369ecb_inline void ecb_poke_u16_u (void *ptr, uint16_t v) { memcpy (ptr, &v, sizeof (v)); }
1370ecb_inline void ecb_poke_u32_u (void *ptr, uint32_t v) { memcpy (ptr, &v, sizeof (v)); }
1371ecb_inline void ecb_poke_u64_u (void *ptr, uint64_t v) { memcpy (ptr, &v, sizeof (v)); }
1372
1373ecb_inline void ecb_poke_be_u16_u (void *ptr, uint_fast16_t v) { ecb_poke_u16_u (ptr, ecb_host_to_be_u16 (v)); }
1374ecb_inline void ecb_poke_be_u32_u (void *ptr, uint_fast32_t v) { ecb_poke_u32_u (ptr, ecb_host_to_be_u32 (v)); }
1375ecb_inline void ecb_poke_be_u64_u (void *ptr, uint_fast64_t v) { ecb_poke_u64_u (ptr, ecb_host_to_be_u64 (v)); }
1376
1377ecb_inline void ecb_poke_le_u16_u (void *ptr, uint_fast16_t v) { ecb_poke_u16_u (ptr, ecb_host_to_le_u16 (v)); }
1378ecb_inline void ecb_poke_le_u32_u (void *ptr, uint_fast32_t v) { ecb_poke_u32_u (ptr, ecb_host_to_le_u32 (v)); }
1379ecb_inline void ecb_poke_le_u64_u (void *ptr, uint_fast64_t v) { ecb_poke_u64_u (ptr, ecb_host_to_le_u64 (v)); }
1380
1381#if ECB_CPP
1382
1383inline uint8_t ecb_bswap (uint8_t v) { return v; }
1384inline uint16_t ecb_bswap (uint16_t v) { return ecb_bswap16 (v); }
1385inline uint32_t ecb_bswap (uint32_t v) { return ecb_bswap32 (v); }
1386inline uint64_t ecb_bswap (uint64_t v) { return ecb_bswap64 (v); }
1387
1388template<typename T> inline T ecb_be_to_host (T v) { return ecb_little_endian () ? ecb_bswap (v) : v; }
1389template<typename T> inline T ecb_le_to_host (T v) { return ecb_big_endian () ? ecb_bswap (v) : v; }
1390template<typename T> inline T ecb_peek (const void *ptr) { return *(const T *)ptr; }
1391template<typename T> inline T ecb_peek_be (const void *ptr) { return ecb_be_to_host (ecb_peek <T> (ptr)); }
1392template<typename T> inline T ecb_peek_le (const void *ptr) { return ecb_le_to_host (ecb_peek <T> (ptr)); }
1393template<typename T> inline T ecb_peek_u (const void *ptr) { T v; memcpy (&v, ptr, sizeof (v)); return v; }
1394template<typename T> inline T ecb_peek_be_u (const void *ptr) { return ecb_be_to_host (ecb_peek_u<T> (ptr)); }
1395template<typename T> inline T ecb_peek_le_u (const void *ptr) { return ecb_le_to_host (ecb_peek_u<T> (ptr)); }
1396
1397template<typename T> inline T ecb_host_to_be (T v) { return ecb_little_endian () ? ecb_bswap (v) : v; }
1398template<typename T> inline T ecb_host_to_le (T v) { return ecb_big_endian () ? ecb_bswap (v) : v; }
1399template<typename T> inline void ecb_poke (void *ptr, T v) { *(T *)ptr = v; }
1400template<typename T> inline void ecb_poke_be (void *ptr, T v) { return ecb_poke <T> (ptr, ecb_host_to_be (v)); }
1401template<typename T> inline void ecb_poke_le (void *ptr, T v) { return ecb_poke <T> (ptr, ecb_host_to_le (v)); }
1402template<typename T> inline void ecb_poke_u (void *ptr, T v) { memcpy (ptr, &v, sizeof (v)); }
1403template<typename T> inline void ecb_poke_be_u (void *ptr, T v) { return ecb_poke_u<T> (ptr, ecb_host_to_be (v)); }
1404template<typename T> inline void ecb_poke_le_u (void *ptr, T v) { return ecb_poke_u<T> (ptr, ecb_host_to_le (v)); }
1405
1406#endif
1407
1408/*****************************************************************************/
1111 1409
1112#if ECB_GCC_VERSION(3,0) || ECB_C99 1410#if ECB_GCC_VERSION(3,0) || ECB_C99
1113 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) 1411 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1114#else 1412#else
1115 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) 1413 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
… …
1139 return N; 1437 return N;
1140 } 1438 }
1141#else 1439#else
1142 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1440 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1143#endif 1441#endif
1442
1443/*****************************************************************************/
1444
1445ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1446ecb_function_ ecb_const uint32_t
1447ecb_binary16_to_binary32 (uint32_t x)
1448{
1449 unsigned int s = (x & 0x8000) << (31 - 15);
1450 int e = (x >> 10) & 0x001f;
1451 unsigned int m = x & 0x03ff;
1452
1453 if (ecb_expect_false (e == 31))
1454 /* infinity or NaN */
1455 e = 255 - (127 - 15);
1456 else if (ecb_expect_false (!e))
1457 {
1458 if (ecb_expect_true (!m))
1459 /* zero, handled by code below by forcing e to 0 */
1460 e = 0 - (127 - 15);
1461 else
1462 {
1463 /* subnormal, renormalise */
1464 unsigned int s = 10 - ecb_ld32 (m);
1465
1466 m = (m << s) & 0x3ff; /* mask implicit bit */
1467 e -= s - 1;
1468 }
1469 }
1470
1471 /* e and m now are normalised, or zero, (or inf or nan) */
1472 e += 127 - 15;
1473
1474 return s | (e << 23) | (m << (23 - 10));
1475}
1476
1477ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1478ecb_function_ ecb_const uint16_t
1479ecb_binary32_to_binary16 (uint32_t x)
1480{
1481 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1482 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1483 unsigned int m = x & 0x007fffff;
1484
1485 x &= 0x7fffffff;
1486
1487 /* if it's within range of binary16 normals, use fast path */
1488 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1489 {
1490 /* mantissa round-to-even */
1491 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1492
1493 /* handle overflow */
1494 if (ecb_expect_false (m >= 0x00800000))
1495 {
1496 m >>= 1;
1497 e += 1;
1498 }
1499
1500 return s | (e << 10) | (m >> (23 - 10));
1501 }
1502
1503 /* handle large numbers and infinity */
1504 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1505 return s | 0x7c00;
1506
1507 /* handle zero, subnormals and small numbers */
1508 if (ecb_expect_true (x < 0x38800000))
1509 {
1510 /* zero */
1511 if (ecb_expect_true (!x))
1512 return s;
1513
1514 /* handle subnormals */
1515
1516 /* too small, will be zero */
1517 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1518 return s;
1519
1520 m |= 0x00800000; /* make implicit bit explicit */
1521
1522 /* very tricky - we need to round to the nearest e (+10) bit value */
1523 {
1524 unsigned int bits = 14 - e;
1525 unsigned int half = (1 << (bits - 1)) - 1;
1526 unsigned int even = (m >> bits) & 1;
1527
1528 /* if this overflows, we will end up with a normalised number */
1529 m = (m + half + even) >> bits;
1530 }
1531
1532 return s | m;
1533 }
1534
1535 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1536 m >>= 13;
1537
1538 return s | 0x7c00 | m | !m;
1539}
1144 1540
1145/*******************************************************************************/ 1541/*******************************************************************************/
1146/* floating point stuff, can be disabled by defining ECB_NO_LIBM */ 1542/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1147 1543
1148/* basically, everything uses "ieee pure-endian" floating point numbers */ 1544/* basically, everything uses "ieee pure-endian" floating point numbers */
… …
1161 || defined __sh__ \ 1557 || defined __sh__ \
1162 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \ 1558 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1163 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \ 1559 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1164 || defined __aarch64__ 1560 || defined __aarch64__
1165 #define ECB_STDFP 1 1561 #define ECB_STDFP 1
1166 #include <string.h> /* for memcpy */
1167#else 1562#else
1168 #define ECB_STDFP 0 1563 #define ECB_STDFP 0
1169#endif 1564#endif
1170 1565
1171#ifndef ECB_NO_LIBM 1566#ifndef ECB_NO_LIBM
… …
1185 #define ECB_NAN ECB_INFINITY 1580 #define ECB_NAN ECB_INFINITY
1186 #endif 1581 #endif
1187 1582
1188 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L 1583 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1189 #define ecb_ldexpf(x,e) ldexpf ((x), (e)) 1584 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1585 #define ecb_frexpf(x,e) frexpf ((x), (e))
1190 #else 1586 #else
1191 #define ecb_ldexpf(x,e) (float) ldexp ((float) (x), (e)) 1587 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1588 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1192 #endif 1589 #endif
1193
1194 /* converts an ieee half/binary16 to a float */
1195 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1196 ecb_function_ ecb_const float
1197 ecb_binary16_to_float (uint16_t x)
1198 {
1199 int e = (x >> 10) & 0x1f;
1200 int m = x & 0x3ff;
1201 float r;
1202
1203 if (!e ) r = ecb_ldexpf (m , -24);
1204 else if (e != 31) r = ecb_ldexpf (m + 0x400, e - 25);
1205 else if (m ) r = ECB_NAN;
1206 else r = ECB_INFINITY;
1207
1208 return x & 0x8000 ? -r : r;
1209 }
1210 1590
1211 /* convert a float to ieee single/binary32 */ 1591 /* convert a float to ieee single/binary32 */
1212 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x); 1592 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1213 ecb_function_ ecb_const uint32_t 1593 ecb_function_ ecb_const uint32_t
1214 ecb_float_to_binary32 (float x) 1594 ecb_float_to_binary32 (float x)
… …
1225 if (x == 0e0f ) return 0x00000000U; 1605 if (x == 0e0f ) return 0x00000000U;
1226 if (x > +3.40282346638528860e+38f) return 0x7f800000U; 1606 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1227 if (x < -3.40282346638528860e+38f) return 0xff800000U; 1607 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1228 if (x != x ) return 0x7fbfffffU; 1608 if (x != x ) return 0x7fbfffffU;
1229 1609
1230 m = frexpf (x, &e) * 0x1000000U; 1610 m = ecb_frexpf (x, &e) * 0x1000000U;
1231 1611
1232 r = m & 0x80000000U; 1612 r = m & 0x80000000U;
1233 1613
1234 if (r) 1614 if (r)
1235 m = -m; 1615 m = -m;
… …
1346 #endif 1726 #endif
1347 1727
1348 return r; 1728 return r;
1349 } 1729 }
1350 1730
1731 /* convert a float to ieee half/binary16 */
1732 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1733 ecb_function_ ecb_const uint16_t
1734 ecb_float_to_binary16 (float x)
1735 {
1736 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1737 }
1738
1739 /* convert an ieee half/binary16 to float */
1740 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1741 ecb_function_ ecb_const float
1742 ecb_binary16_to_float (uint16_t x)
1743 {
1744 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1745 }
1746
1351#endif 1747#endif
1352 1748
1353#endif 1749#endif
1354 1750
1355/* ECB.H END */ 1751/* ECB.H END */
1356 1752
1357#if ECB_MEMORY_FENCE_NEEDS_PTHREADS 1753#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1358/* if your architecture doesn't need memory fences, e.g. because it is 1754/* if your architecture doesn't need memory fences, e.g. because it is
1359 * single-cpu/core, or if you use libev in a project that doesn't use libev 1755 * single-cpu/core, or if you use libev in a project that doesn't use libev
1360 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling 1756 * from multiple threads, then you can define ECB_NO_THREADS when compiling
1361 * libev, in which cases the memory fences become nops. 1757 * libev, in which cases the memory fences become nops.
1362 * alternatively, you can remove this #error and link against libpthread, 1758 * alternatively, you can remove this #error and link against libpthread,
1363 * which will then provide the memory fences. 1759 * which will then provide the memory fences.
1364 */ 1760 */
1365# error "memory fences not defined for your architecture, please report" 1761# error "memory fences not defined for your architecture, please report"
… …
1369# define ECB_MEMORY_FENCE do { } while (0) 1765# define ECB_MEMORY_FENCE do { } while (0)
1370# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 1766# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1371# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 1767# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1372#endif 1768#endif
1373 1769
1374#define expect_false(cond) ecb_expect_false (cond)
1375#define expect_true(cond) ecb_expect_true (cond)
1376#define noinline ecb_noinline
1377
1378#define inline_size ecb_inline 1770#define inline_size ecb_inline
1379 1771
1380#if EV_FEATURE_CODE 1772#if EV_FEATURE_CODE
1381# define inline_speed ecb_inline 1773# define inline_speed ecb_inline
1382#else 1774#else
1383# define inline_speed static noinline 1775# define inline_speed ecb_noinline static
1384#endif 1776#endif
1777
1778/*****************************************************************************/
1779/* raw syscall wrappers */
1780
1781#if EV_NEED_SYSCALL
1782
1783#include <sys/syscall.h>
1784
1785/*
1786 * define some syscall wrappers for common architectures
1787 * this is mostly for nice looks during debugging, not performance.
1788 * our syscalls return < 0, not == -1, on error. which is good
1789 * enough for linux aio.
1790 * TODO: arm is also common nowadays, maybe even mips and x86
1791 * TODO: after implementing this, it suddenly looks like overkill, but its hard to remove...
1792 */
1793#if __GNUC__ && __linux && ECB_AMD64 && !EV_FEATURE_CODE
1794 /* the costly errno access probably kills this for size optimisation */
1795
1796 #define ev_syscall(nr,narg,arg1,arg2,arg3,arg4,arg5,arg6) \
1797 ({ \
1798 long res; \
1799 register unsigned long r6 __asm__ ("r9" ); \
1800 register unsigned long r5 __asm__ ("r8" ); \
1801 register unsigned long r4 __asm__ ("r10"); \
1802 register unsigned long r3 __asm__ ("rdx"); \
1803 register unsigned long r2 __asm__ ("rsi"); \
1804 register unsigned long r1 __asm__ ("rdi"); \
1805 if (narg >= 6) r6 = (unsigned long)(arg6); \
1806 if (narg >= 5) r5 = (unsigned long)(arg5); \
1807 if (narg >= 4) r4 = (unsigned long)(arg4); \
1808 if (narg >= 3) r3 = (unsigned long)(arg3); \
1809 if (narg >= 2) r2 = (unsigned long)(arg2); \
1810 if (narg >= 1) r1 = (unsigned long)(arg1); \
1811 __asm__ __volatile__ ( \
1812 "syscall\n\t" \
1813 : "=a" (res) \
1814 : "0" (nr), "r" (r1), "r" (r2), "r" (r3), "r" (r4), "r" (r5) \
1815 : "cc", "r11", "cx", "memory"); \
1816 errno = -res; \
1817 res; \
1818 })
1819
1820#endif
1821
1822#ifdef ev_syscall
1823 #define ev_syscall0(nr) ev_syscall (nr, 0, 0, 0, 0, 0, 0, 0)
1824 #define ev_syscall1(nr,arg1) ev_syscall (nr, 1, arg1, 0, 0, 0, 0, 0)
1825 #define ev_syscall2(nr,arg1,arg2) ev_syscall (nr, 2, arg1, arg2, 0, 0, 0, 0)
1826 #define ev_syscall3(nr,arg1,arg2,arg3) ev_syscall (nr, 3, arg1, arg2, arg3, 0, 0, 0)
1827 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) ev_syscall (nr, 3, arg1, arg2, arg3, arg4, 0, 0)
1828 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) ev_syscall (nr, 5, arg1, arg2, arg3, arg4, arg5, 0)
1829 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) ev_syscall (nr, 6, arg1, arg2, arg3, arg4, arg5,arg6)
1830#else
1831 #define ev_syscall0(nr) syscall (nr)
1832 #define ev_syscall1(nr,arg1) syscall (nr, arg1)
1833 #define ev_syscall2(nr,arg1,arg2) syscall (nr, arg1, arg2)
1834 #define ev_syscall3(nr,arg1,arg2,arg3) syscall (nr, arg1, arg2, arg3)
1835 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) syscall (nr, arg1, arg2, arg3, arg4)
1836 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) syscall (nr, arg1, arg2, arg3, arg4, arg5)
1837 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) syscall (nr, arg1, arg2, arg3, arg4, arg5,arg6)
1838#endif
1839
1840#endif
1841
1842/*****************************************************************************/
1385 1843
1386#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1844#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
1387 1845
1388#if EV_MINPRI == EV_MAXPRI 1846#if EV_MINPRI == EV_MAXPRI
1389# define ABSPRI(w) (((W)w), 0) 1847# define ABSPRI(w) (((W)w), 0)
1390#else 1848#else
1391# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1849# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
1392#endif 1850#endif
1393 1851
1394#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1852#define EMPTY /* required for microsofts broken pseudo-c compiler */
1395#define EMPTY2(a,b) /* used to suppress some warnings */
1396 1853
1397typedef ev_watcher *W; 1854typedef ev_watcher *W;
1398typedef ev_watcher_list *WL; 1855typedef ev_watcher_list *WL;
1399typedef ev_watcher_time *WT; 1856typedef ev_watcher_time *WT;
1400 1857
… …
1425# include "ev_win32.c" 1882# include "ev_win32.c"
1426#endif 1883#endif
1427 1884
1428/*****************************************************************************/ 1885/*****************************************************************************/
1429 1886
1887#if EV_USE_LINUXAIO
1888# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1889#endif
1890
1430/* define a suitable floor function (only used by periodics atm) */ 1891/* define a suitable floor function (only used by periodics atm) */
1431 1892
1432#if EV_USE_FLOOR 1893#if EV_USE_FLOOR
1433# include <math.h> 1894# include <math.h>
1434# define ev_floor(v) floor (v) 1895# define ev_floor(v) floor (v)
1435#else 1896#else
1436 1897
1437#include <float.h> 1898#include <float.h>
1438 1899
1439/* a floor() replacement function, should be independent of ev_tstamp type */ 1900/* a floor() replacement function, should be independent of ev_tstamp type */
1901ecb_noinline
1440static ev_tstamp noinline 1902static ev_tstamp
1441ev_floor (ev_tstamp v) 1903ev_floor (ev_tstamp v)
1442{ 1904{
1443 /* the choice of shift factor is not terribly important */ 1905 /* the choice of shift factor is not terribly important */
1444#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1906#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1445 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1907 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1446#else 1908#else
1447 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; 1909 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1448#endif 1910#endif
1449 1911
1912 /* special treatment for negative arguments */
1913 if (ecb_expect_false (v < 0.))
1914 {
1915 ev_tstamp f = -ev_floor (-v);
1916
1917 return f - (f == v ? 0 : 1);
1918 }
1919
1450 /* argument too large for an unsigned long? */ 1920 /* argument too large for an unsigned long? then reduce it */
1451 if (expect_false (v >= shift)) 1921 if (ecb_expect_false (v >= shift))
1452 { 1922 {
1453 ev_tstamp f; 1923 ev_tstamp f;
1454 1924
1455 if (v == v - 1.) 1925 if (v == v - 1.)
1456 return v; /* very large number */ 1926 return v; /* very large numbers are assumed to be integer */
1457 1927
1458 f = shift * ev_floor (v * (1. / shift)); 1928 f = shift * ev_floor (v * (1. / shift));
1459 return f + ev_floor (v - f); 1929 return f + ev_floor (v - f);
1460 } 1930 }
1461 1931
1462 /* special treatment for negative args? */
1463 if (expect_false (v < 0.))
1464 {
1465 ev_tstamp f = -ev_floor (-v);
1466
1467 return f - (f == v ? 0 : 1);
1468 }
1469
1470 /* fits into an unsigned long */ 1932 /* fits into an unsigned long */
1471 return (unsigned long)v; 1933 return (unsigned long)v;
1472} 1934}
1473 1935
1474#endif 1936#endif
… …
1477 1939
1478#ifdef __linux 1940#ifdef __linux
1479# include <sys/utsname.h> 1941# include <sys/utsname.h>
1480#endif 1942#endif
1481 1943
1482static unsigned int noinline ecb_cold 1944ecb_noinline ecb_cold
1945static unsigned int
1483ev_linux_version (void) 1946ev_linux_version (void)
1484{ 1947{
1485#ifdef __linux 1948#ifdef __linux
1486 unsigned int v = 0; 1949 unsigned int v = 0;
1487 struct utsname buf; 1950 struct utsname buf;
… …
1516} 1979}
1517 1980
1518/*****************************************************************************/ 1981/*****************************************************************************/
1519 1982
1520#if EV_AVOID_STDIO 1983#if EV_AVOID_STDIO
1521static void noinline ecb_cold 1984ecb_noinline ecb_cold
1985static void
1522ev_printerr (const char *msg) 1986ev_printerr (const char *msg)
1523{ 1987{
1524 write (STDERR_FILENO, msg, strlen (msg)); 1988 write (STDERR_FILENO, msg, strlen (msg));
1525} 1989}
1526#endif 1990#endif
1527 1991
1528static void (*syserr_cb)(const char *msg) EV_THROW; 1992static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
1529 1993
1530void ecb_cold 1994ecb_cold
1995void
1531ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW 1996ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
1532{ 1997{
1533 syserr_cb = cb; 1998 syserr_cb = cb;
1534} 1999}
1535 2000
1536static void noinline ecb_cold 2001ecb_noinline ecb_cold
2002static void
1537ev_syserr (const char *msg) 2003ev_syserr (const char *msg)
1538{ 2004{
1539 if (!msg) 2005 if (!msg)
1540 msg = "(libev) system error"; 2006 msg = "(libev) system error";
1541 2007
… …
1554 abort (); 2020 abort ();
1555 } 2021 }
1556} 2022}
1557 2023
1558static void * 2024static void *
1559ev_realloc_emul (void *ptr, long size) EV_THROW 2025ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
1560{ 2026{
1561 /* some systems, notably openbsd and darwin, fail to properly 2027 /* some systems, notably openbsd and darwin, fail to properly
1562 * implement realloc (x, 0) (as required by both ansi c-89 and 2028 * implement realloc (x, 0) (as required by both ansi c-89 and
1563 * the single unix specification, so work around them here. 2029 * the single unix specification, so work around them here.
1564 * recently, also (at least) fedora and debian started breaking it, 2030 * recently, also (at least) fedora and debian started breaking it,
… …
1570 2036
1571 free (ptr); 2037 free (ptr);
1572 return 0; 2038 return 0;
1573} 2039}
1574 2040
1575static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul; 2041static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
1576 2042
1577void ecb_cold 2043ecb_cold
2044void
1578ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW 2045ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
1579{ 2046{
1580 alloc = cb; 2047 alloc = cb;
1581} 2048}
1582 2049
1583inline_speed void * 2050inline_speed void *
… …
1610typedef struct 2077typedef struct
1611{ 2078{
1612 WL head; 2079 WL head;
1613 unsigned char events; /* the events watched for */ 2080 unsigned char events; /* the events watched for */
1614 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 2081 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
1615 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 2082 unsigned char emask; /* some backends store the actual kernel mask in here */
1616 unsigned char unused; 2083 unsigned char eflags; /* flags field for use by backends */
1617#if EV_USE_EPOLL 2084#if EV_USE_EPOLL
1618 unsigned int egen; /* generation counter to counter epoll bugs */ 2085 unsigned int egen; /* generation counter to counter epoll bugs */
1619#endif 2086#endif
1620#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 2087#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1621 SOCKET handle; 2088 SOCKET handle;
… …
1675 static struct ev_loop default_loop_struct; 2142 static struct ev_loop default_loop_struct;
1676 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */ 2143 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
1677 2144
1678#else 2145#else
1679 2146
1680 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */ 2147 EV_API_DECL ev_tstamp ev_rt_now = EV_TS_CONST (0.); /* needs to be initialised to make it a definition despite extern */
1681 #define VAR(name,decl) static decl; 2148 #define VAR(name,decl) static decl;
1682 #include "ev_vars.h" 2149 #include "ev_vars.h"
1683 #undef VAR 2150 #undef VAR
1684 2151
1685 static int ev_default_loop_ptr; 2152 static int ev_default_loop_ptr;
1686 2153
1687#endif 2154#endif
1688 2155
1689#if EV_FEATURE_API 2156#if EV_FEATURE_API
1690# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 2157# define EV_RELEASE_CB if (ecb_expect_false (release_cb)) release_cb (EV_A)
1691# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 2158# define EV_ACQUIRE_CB if (ecb_expect_false (acquire_cb)) acquire_cb (EV_A)
1692# define EV_INVOKE_PENDING invoke_cb (EV_A) 2159# define EV_INVOKE_PENDING invoke_cb (EV_A)
1693#else 2160#else
1694# define EV_RELEASE_CB (void)0 2161# define EV_RELEASE_CB (void)0
1695# define EV_ACQUIRE_CB (void)0 2162# define EV_ACQUIRE_CB (void)0
1696# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 2163# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
… …
1700 2167
1701/*****************************************************************************/ 2168/*****************************************************************************/
1702 2169
1703#ifndef EV_HAVE_EV_TIME 2170#ifndef EV_HAVE_EV_TIME
1704ev_tstamp 2171ev_tstamp
1705ev_time (void) EV_THROW 2172ev_time (void) EV_NOEXCEPT
1706{ 2173{
1707#if EV_USE_REALTIME 2174#if EV_USE_REALTIME
1708 if (expect_true (have_realtime)) 2175 if (ecb_expect_true (have_realtime))
1709 { 2176 {
1710 struct timespec ts; 2177 struct timespec ts;
1711 clock_gettime (CLOCK_REALTIME, &ts); 2178 clock_gettime (CLOCK_REALTIME, &ts);
1712 return ts.tv_sec + ts.tv_nsec * 1e-9; 2179 return EV_TS_GET (ts);
1713 } 2180 }
1714#endif 2181#endif
1715 2182
2183 {
1716 struct timeval tv; 2184 struct timeval tv;
1717 gettimeofday (&tv, 0); 2185 gettimeofday (&tv, 0);
1718 return tv.tv_sec + tv.tv_usec * 1e-6; 2186 return EV_TV_GET (tv);
2187 }
1719} 2188}
1720#endif 2189#endif
1721 2190
1722inline_size ev_tstamp 2191inline_size ev_tstamp
1723get_clock (void) 2192get_clock (void)
1724{ 2193{
1725#if EV_USE_MONOTONIC 2194#if EV_USE_MONOTONIC
1726 if (expect_true (have_monotonic)) 2195 if (ecb_expect_true (have_monotonic))
1727 { 2196 {
1728 struct timespec ts; 2197 struct timespec ts;
1729 clock_gettime (CLOCK_MONOTONIC, &ts); 2198 clock_gettime (CLOCK_MONOTONIC, &ts);
1730 return ts.tv_sec + ts.tv_nsec * 1e-9; 2199 return EV_TS_GET (ts);
1731 } 2200 }
1732#endif 2201#endif
1733 2202
1734 return ev_time (); 2203 return ev_time ();
1735} 2204}
1736 2205
1737#if EV_MULTIPLICITY 2206#if EV_MULTIPLICITY
1738ev_tstamp 2207ev_tstamp
1739ev_now (EV_P) EV_THROW 2208ev_now (EV_P) EV_NOEXCEPT
1740{ 2209{
1741 return ev_rt_now; 2210 return ev_rt_now;
1742} 2211}
1743#endif 2212#endif
1744 2213
1745void 2214void
1746ev_sleep (ev_tstamp delay) EV_THROW 2215ev_sleep (ev_tstamp delay) EV_NOEXCEPT
1747{ 2216{
1748 if (delay > 0.) 2217 if (delay > EV_TS_CONST (0.))
1749 { 2218 {
1750#if EV_USE_NANOSLEEP 2219#if EV_USE_NANOSLEEP
1751 struct timespec ts; 2220 struct timespec ts;
1752 2221
1753 EV_TS_SET (ts, delay); 2222 EV_TS_SET (ts, delay);
1754 nanosleep (&ts, 0); 2223 nanosleep (&ts, 0);
1755#elif defined _WIN32 2224#elif defined _WIN32
2225 /* maybe this should round up, as ms is very low resolution */
2226 /* compared to select (µs) or nanosleep (ns) */
1756 Sleep ((unsigned long)(delay * 1e3)); 2227 Sleep ((unsigned long)(EV_TS_TO_MSEC (delay)));
1757#else 2228#else
1758 struct timeval tv; 2229 struct timeval tv;
1759 2230
1760 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 2231 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
1761 /* something not guaranteed by newer posix versions, but guaranteed */ 2232 /* something not guaranteed by newer posix versions, but guaranteed */
… …
1791 } 2262 }
1792 2263
1793 return ncur; 2264 return ncur;
1794} 2265}
1795 2266
1796static void * noinline ecb_cold 2267ecb_noinline ecb_cold
2268static void *
1797array_realloc (int elem, void *base, int *cur, int cnt) 2269array_realloc (int elem, void *base, int *cur, int cnt)
1798{ 2270{
1799 *cur = array_nextsize (elem, *cur, cnt); 2271 *cur = array_nextsize (elem, *cur, cnt);
1800 return ev_realloc (base, elem * *cur); 2272 return ev_realloc (base, elem * *cur);
1801} 2273}
1802 2274
2275#define array_needsize_noinit(base,offset,count)
2276
1803#define array_init_zero(base,count) \ 2277#define array_needsize_zerofill(base,offset,count) \
1804 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2278 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
1805 2279
1806#define array_needsize(type,base,cur,cnt,init) \ 2280#define array_needsize(type,base,cur,cnt,init) \
1807 if (expect_false ((cnt) > (cur))) \ 2281 if (ecb_expect_false ((cnt) > (cur))) \
1808 { \ 2282 { \
1809 int ecb_unused ocur_ = (cur); \ 2283 ecb_unused int ocur_ = (cur); \
1810 (base) = (type *)array_realloc \ 2284 (base) = (type *)array_realloc \
1811 (sizeof (type), (base), &(cur), (cnt)); \ 2285 (sizeof (type), (base), &(cur), (cnt)); \
1812 init ((base) + (ocur_), (cur) - ocur_); \ 2286 init ((base), ocur_, ((cur) - ocur_)); \
1813 } 2287 }
1814 2288
1815#if 0 2289#if 0
1816#define array_slim(type,stem) \ 2290#define array_slim(type,stem) \
1817 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2291 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
1826 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2300 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
1827 2301
1828/*****************************************************************************/ 2302/*****************************************************************************/
1829 2303
1830/* dummy callback for pending events */ 2304/* dummy callback for pending events */
1831static void noinline 2305ecb_noinline
2306static void
1832pendingcb (EV_P_ ev_prepare *w, int revents) 2307pendingcb (EV_P_ ev_prepare *w, int revents)
1833{ 2308{
1834} 2309}
1835 2310
1836void noinline 2311ecb_noinline
2312void
1837ev_feed_event (EV_P_ void *w, int revents) EV_THROW 2313ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
1838{ 2314{
1839 W w_ = (W)w; 2315 W w_ = (W)w;
1840 int pri = ABSPRI (w_); 2316 int pri = ABSPRI (w_);
1841 2317
1842 if (expect_false (w_->pending)) 2318 if (ecb_expect_false (w_->pending))
1843 pendings [pri][w_->pending - 1].events |= revents; 2319 pendings [pri][w_->pending - 1].events |= revents;
1844 else 2320 else
1845 { 2321 {
1846 w_->pending = ++pendingcnt [pri]; 2322 w_->pending = ++pendingcnt [pri];
1847 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2323 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
1848 pendings [pri][w_->pending - 1].w = w_; 2324 pendings [pri][w_->pending - 1].w = w_;
1849 pendings [pri][w_->pending - 1].events = revents; 2325 pendings [pri][w_->pending - 1].events = revents;
1850 } 2326 }
1851 2327
1852 pendingpri = NUMPRI - 1; 2328 pendingpri = NUMPRI - 1;
1853} 2329}
1854 2330
1855inline_speed void 2331inline_speed void
1856feed_reverse (EV_P_ W w) 2332feed_reverse (EV_P_ W w)
1857{ 2333{
1858 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2334 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
1859 rfeeds [rfeedcnt++] = w; 2335 rfeeds [rfeedcnt++] = w;
1860} 2336}
1861 2337
1862inline_size void 2338inline_size void
1863feed_reverse_done (EV_P_ int revents) 2339feed_reverse_done (EV_P_ int revents)
… …
1898inline_speed void 2374inline_speed void
1899fd_event (EV_P_ int fd, int revents) 2375fd_event (EV_P_ int fd, int revents)
1900{ 2376{
1901 ANFD *anfd = anfds + fd; 2377 ANFD *anfd = anfds + fd;
1902 2378
1903 if (expect_true (!anfd->reify)) 2379 if (ecb_expect_true (!anfd->reify))
1904 fd_event_nocheck (EV_A_ fd, revents); 2380 fd_event_nocheck (EV_A_ fd, revents);
1905} 2381}
1906 2382
1907void 2383void
1908ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW 2384ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
1909{ 2385{
1910 if (fd >= 0 && fd < anfdmax) 2386 if (fd >= 0 && fd < anfdmax)
1911 fd_event_nocheck (EV_A_ fd, revents); 2387 fd_event_nocheck (EV_A_ fd, revents);
1912} 2388}
1913 2389
… …
1916inline_size void 2392inline_size void
1917fd_reify (EV_P) 2393fd_reify (EV_P)
1918{ 2394{
1919 int i; 2395 int i;
1920 2396
2397 /* most backends do not modify the fdchanges list in backend_modfiy.
2398 * except io_uring, which has fixed-size buffers which might force us
2399 * to handle events in backend_modify, causing fdchanges to be amended,
2400 * which could result in an endless loop.
2401 * to avoid this, we do not dynamically handle fds that were added
2402 * during fd_reify. that means that for those backends, fdchangecnt
2403 * might be non-zero during poll, which must cause them to not block.
2404 * to not put too much of a burden on other backends, this detail
2405 * needs to be handled in the backend.
2406 */
2407 int changecnt = fdchangecnt;
2408
1921#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 2409#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1922 for (i = 0; i < fdchangecnt; ++i) 2410 for (i = 0; i < changecnt; ++i)
1923 { 2411 {
1924 int fd = fdchanges [i]; 2412 int fd = fdchanges [i];
1925 ANFD *anfd = anfds + fd; 2413 ANFD *anfd = anfds + fd;
1926 2414
1927 if (anfd->reify & EV__IOFDSET && anfd->head) 2415 if (anfd->reify & EV__IOFDSET && anfd->head)
… …
1941 } 2429 }
1942 } 2430 }
1943 } 2431 }
1944#endif 2432#endif
1945 2433
1946 for (i = 0; i < fdchangecnt; ++i) 2434 for (i = 0; i < changecnt; ++i)
1947 { 2435 {
1948 int fd = fdchanges [i]; 2436 int fd = fdchanges [i];
1949 ANFD *anfd = anfds + fd; 2437 ANFD *anfd = anfds + fd;
1950 ev_io *w; 2438 ev_io *w;
1951 2439
1952 unsigned char o_events = anfd->events; 2440 unsigned char o_events = anfd->events;
1953 unsigned char o_reify = anfd->reify; 2441 unsigned char o_reify = anfd->reify;
1954 2442
1955 anfd->reify = 0; 2443 anfd->reify = 0;
1956 2444
1957 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 2445 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
1958 { 2446 {
1959 anfd->events = 0; 2447 anfd->events = 0;
1960 2448
1961 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2449 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1962 anfd->events |= (unsigned char)w->events; 2450 anfd->events |= (unsigned char)w->events;
… …
1967 2455
1968 if (o_reify & EV__IOFDSET) 2456 if (o_reify & EV__IOFDSET)
1969 backend_modify (EV_A_ fd, o_events, anfd->events); 2457 backend_modify (EV_A_ fd, o_events, anfd->events);
1970 } 2458 }
1971 2459
2460 /* normally, fdchangecnt hasn't changed. if it has, then new fds have been added.
2461 * this is a rare case (see beginning comment in this function), so we copy them to the
2462 * front and hope the backend handles this case.
2463 */
2464 if (ecb_expect_false (fdchangecnt != changecnt))
2465 memmove (fdchanges, fdchanges + changecnt, (fdchangecnt - changecnt) * sizeof (*fdchanges));
2466
1972 fdchangecnt = 0; 2467 fdchangecnt -= changecnt;
1973} 2468}
1974 2469
1975/* something about the given fd changed */ 2470/* something about the given fd changed */
1976inline_size void 2471inline_size
2472void
1977fd_change (EV_P_ int fd, int flags) 2473fd_change (EV_P_ int fd, int flags)
1978{ 2474{
1979 unsigned char reify = anfds [fd].reify; 2475 unsigned char reify = anfds [fd].reify;
1980 anfds [fd].reify |= flags; 2476 anfds [fd].reify |= flags;
1981 2477
1982 if (expect_true (!reify)) 2478 if (ecb_expect_true (!reify))
1983 { 2479 {
1984 ++fdchangecnt; 2480 ++fdchangecnt;
1985 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2481 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
1986 fdchanges [fdchangecnt - 1] = fd; 2482 fdchanges [fdchangecnt - 1] = fd;
1987 } 2483 }
1988} 2484}
1989 2485
1990/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2486/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1991inline_speed void ecb_cold 2487inline_speed ecb_cold void
1992fd_kill (EV_P_ int fd) 2488fd_kill (EV_P_ int fd)
1993{ 2489{
1994 ev_io *w; 2490 ev_io *w;
1995 2491
1996 while ((w = (ev_io *)anfds [fd].head)) 2492 while ((w = (ev_io *)anfds [fd].head))
… …
1999 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2495 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
2000 } 2496 }
2001} 2497}
2002 2498
2003/* check whether the given fd is actually valid, for error recovery */ 2499/* check whether the given fd is actually valid, for error recovery */
2004inline_size int ecb_cold 2500inline_size ecb_cold int
2005fd_valid (int fd) 2501fd_valid (int fd)
2006{ 2502{
2007#ifdef _WIN32 2503#ifdef _WIN32
2008 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2504 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
2009#else 2505#else
2010 return fcntl (fd, F_GETFD) != -1; 2506 return fcntl (fd, F_GETFD) != -1;
2011#endif 2507#endif
2012} 2508}
2013 2509
2014/* called on EBADF to verify fds */ 2510/* called on EBADF to verify fds */
2015static void noinline ecb_cold 2511ecb_noinline ecb_cold
2512static void
2016fd_ebadf (EV_P) 2513fd_ebadf (EV_P)
2017{ 2514{
2018 int fd; 2515 int fd;
2019 2516
2020 for (fd = 0; fd < anfdmax; ++fd) 2517 for (fd = 0; fd < anfdmax; ++fd)
… …
2022 if (!fd_valid (fd) && errno == EBADF) 2519 if (!fd_valid (fd) && errno == EBADF)
2023 fd_kill (EV_A_ fd); 2520 fd_kill (EV_A_ fd);
2024} 2521}
2025 2522
2026/* called on ENOMEM in select/poll to kill some fds and retry */ 2523/* called on ENOMEM in select/poll to kill some fds and retry */
2027static void noinline ecb_cold 2524ecb_noinline ecb_cold
2525static void
2028fd_enomem (EV_P) 2526fd_enomem (EV_P)
2029{ 2527{
2030 int fd; 2528 int fd;
2031 2529
2032 for (fd = anfdmax; fd--; ) 2530 for (fd = anfdmax; fd--; )
… …
2036 break; 2534 break;
2037 } 2535 }
2038} 2536}
2039 2537
2040/* usually called after fork if backend needs to re-arm all fds from scratch */ 2538/* usually called after fork if backend needs to re-arm all fds from scratch */
2041static void noinline 2539ecb_noinline
2540static void
2042fd_rearm_all (EV_P) 2541fd_rearm_all (EV_P)
2043{ 2542{
2044 int fd; 2543 int fd;
2045 2544
2046 for (fd = 0; fd < anfdmax; ++fd) 2545 for (fd = 0; fd < anfdmax; ++fd)
… …
2099 ev_tstamp minat; 2598 ev_tstamp minat;
2100 ANHE *minpos; 2599 ANHE *minpos;
2101 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2600 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
2102 2601
2103 /* find minimum child */ 2602 /* find minimum child */
2104 if (expect_true (pos + DHEAP - 1 < E)) 2603 if (ecb_expect_true (pos + DHEAP - 1 < E))
2105 { 2604 {
2106 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2605 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
2107 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2606 if ( minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
2108 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2607 if ( minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
2109 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2608 if ( minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
2110 } 2609 }
2111 else if (pos < E) 2610 else if (pos < E)
2112 { 2611 {
2113 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2612 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
2114 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2613 if (pos + 1 < E && minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
2115 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2614 if (pos + 2 < E && minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
2116 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2615 if (pos + 3 < E && minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
2117 } 2616 }
2118 else 2617 else
2119 break; 2618 break;
2120 2619
2121 if (ANHE_at (he) <= minat) 2620 if (ANHE_at (he) <= minat)
… …
2129 2628
2130 heap [k] = he; 2629 heap [k] = he;
2131 ev_active (ANHE_w (he)) = k; 2630 ev_active (ANHE_w (he)) = k;
2132} 2631}
2133 2632
2134#else /* 4HEAP */ 2633#else /* not 4HEAP */
2135 2634
2136#define HEAP0 1 2635#define HEAP0 1
2137#define HPARENT(k) ((k) >> 1) 2636#define HPARENT(k) ((k) >> 1)
2138#define UPHEAP_DONE(p,k) (!(p)) 2637#define UPHEAP_DONE(p,k) (!(p))
2139 2638
… …
2211 upheap (heap, i + HEAP0); 2710 upheap (heap, i + HEAP0);
2212} 2711}
2213 2712
2214/*****************************************************************************/ 2713/*****************************************************************************/
2215 2714
2216/* associate signal watchers to a signal signal */ 2715/* associate signal watchers to a signal */
2217typedef struct 2716typedef struct
2218{ 2717{
2219 EV_ATOMIC_T pending; 2718 EV_ATOMIC_T pending;
2220#if EV_MULTIPLICITY 2719#if EV_MULTIPLICITY
2221 EV_P; 2720 EV_P;
… …
2227 2726
2228/*****************************************************************************/ 2727/*****************************************************************************/
2229 2728
2230#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2729#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2231 2730
2232static void noinline ecb_cold 2731ecb_noinline ecb_cold
2732static void
2233evpipe_init (EV_P) 2733evpipe_init (EV_P)
2234{ 2734{
2235 if (!ev_is_active (&pipe_w)) 2735 if (!ev_is_active (&pipe_w))
2236 { 2736 {
2237 int fds [2]; 2737 int fds [2];
… …
2277inline_speed void 2777inline_speed void
2278evpipe_write (EV_P_ EV_ATOMIC_T *flag) 2778evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2279{ 2779{
2280 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */ 2780 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2281 2781
2282 if (expect_true (*flag)) 2782 if (ecb_expect_true (*flag))
2283 return; 2783 return;
2284 2784
2285 *flag = 1; 2785 *flag = 1;
2286 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */ 2786 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2287 2787
… …
2308#endif 2808#endif
2309 { 2809 {
2310#ifdef _WIN32 2810#ifdef _WIN32
2311 WSABUF buf; 2811 WSABUF buf;
2312 DWORD sent; 2812 DWORD sent;
2313 buf.buf = &buf; 2813 buf.buf = (char *)&buf;
2314 buf.len = 1; 2814 buf.len = 1;
2315 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0); 2815 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2316#else 2816#else
2317 write (evpipe [1], &(evpipe [1]), 1); 2817 write (evpipe [1], &(evpipe [1]), 1);
2318#endif 2818#endif
… …
2364 sig_pending = 0; 2864 sig_pending = 0;
2365 2865
2366 ECB_MEMORY_FENCE; 2866 ECB_MEMORY_FENCE;
2367 2867
2368 for (i = EV_NSIG - 1; i--; ) 2868 for (i = EV_NSIG - 1; i--; )
2369 if (expect_false (signals [i].pending)) 2869 if (ecb_expect_false (signals [i].pending))
2370 ev_feed_signal_event (EV_A_ i + 1); 2870 ev_feed_signal_event (EV_A_ i + 1);
2371 } 2871 }
2372#endif 2872#endif
2373 2873
2374#if EV_ASYNC_ENABLE 2874#if EV_ASYNC_ENABLE
… …
2390} 2890}
2391 2891
2392/*****************************************************************************/ 2892/*****************************************************************************/
2393 2893
2394void 2894void
2395ev_feed_signal (int signum) EV_THROW 2895ev_feed_signal (int signum) EV_NOEXCEPT
2396{ 2896{
2397#if EV_MULTIPLICITY 2897#if EV_MULTIPLICITY
2398 EV_P; 2898 EV_P;
2399 ECB_MEMORY_FENCE_ACQUIRE; 2899 ECB_MEMORY_FENCE_ACQUIRE;
2400 EV_A = signals [signum - 1].loop; 2900 EV_A = signals [signum - 1].loop;
… …
2415#endif 2915#endif
2416 2916
2417 ev_feed_signal (signum); 2917 ev_feed_signal (signum);
2418} 2918}
2419 2919
2420void noinline 2920ecb_noinline
2921void
2421ev_feed_signal_event (EV_P_ int signum) EV_THROW 2922ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
2422{ 2923{
2423 WL w; 2924 WL w;
2424 2925
2425 if (expect_false (signum <= 0 || signum >= EV_NSIG)) 2926 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
2426 return; 2927 return;
2427 2928
2428 --signum; 2929 --signum;
2429 2930
2430#if EV_MULTIPLICITY 2931#if EV_MULTIPLICITY
2431 /* it is permissible to try to feed a signal to the wrong loop */ 2932 /* it is permissible to try to feed a signal to the wrong loop */
2432 /* or, likely more useful, feeding a signal nobody is waiting for */ 2933 /* or, likely more useful, feeding a signal nobody is waiting for */
2433 2934
2434 if (expect_false (signals [signum].loop != EV_A)) 2935 if (ecb_expect_false (signals [signum].loop != EV_A))
2435 return; 2936 return;
2436#endif 2937#endif
2437 2938
2438 signals [signum].pending = 0; 2939 signals [signum].pending = 0;
2439 ECB_MEMORY_FENCE_RELEASE; 2940 ECB_MEMORY_FENCE_RELEASE;
… …
2523 3024
2524#endif 3025#endif
2525 3026
2526/*****************************************************************************/ 3027/*****************************************************************************/
2527 3028
3029#if EV_USE_TIMERFD
3030
3031static void periodics_reschedule (EV_P);
3032
3033static void
3034timerfdcb (EV_P_ ev_io *iow, int revents)
3035{
3036 struct itimerspec its = { 0 };
3037
3038 its.it_value.tv_sec = ev_rt_now + (int)MAX_BLOCKTIME2;
3039 timerfd_settime (timerfd, TFD_TIMER_ABSTIME | TFD_TIMER_CANCEL_ON_SET, &its, 0);
3040
3041 ev_rt_now = ev_time ();
3042 /* periodics_reschedule only needs ev_rt_now */
3043 /* but maybe in the future we want the full treatment. */
3044 /*
3045 now_floor = EV_TS_CONST (0.);
3046 time_update (EV_A_ EV_TSTAMP_HUGE);
3047 */
3048#if EV_PERIODIC_ENABLE
3049 periodics_reschedule (EV_A);
3050#endif
3051}
3052
3053ecb_noinline ecb_cold
3054static void
3055evtimerfd_init (EV_P)
3056{
3057 if (!ev_is_active (&timerfd_w))
3058 {
3059 timerfd = timerfd_create (CLOCK_REALTIME, TFD_NONBLOCK | TFD_CLOEXEC);
3060
3061 if (timerfd >= 0)
3062 {
3063 fd_intern (timerfd); /* just to be sure */
3064
3065 ev_io_init (&timerfd_w, timerfdcb, timerfd, EV_READ);
3066 ev_set_priority (&timerfd_w, EV_MINPRI);
3067 ev_io_start (EV_A_ &timerfd_w);
3068 ev_unref (EV_A); /* watcher should not keep loop alive */
3069
3070 /* (re-) arm timer */
3071 timerfdcb (EV_A_ 0, 0);
3072 }
3073 }
3074}
3075
3076#endif
3077
3078/*****************************************************************************/
3079
2528#if EV_USE_IOCP 3080#if EV_USE_IOCP
2529# include "ev_iocp.c" 3081# include "ev_iocp.c"
2530#endif 3082#endif
2531#if EV_USE_PORT 3083#if EV_USE_PORT
2532# include "ev_port.c" 3084# include "ev_port.c"
… …
2535# include "ev_kqueue.c" 3087# include "ev_kqueue.c"
2536#endif 3088#endif
2537#if EV_USE_EPOLL 3089#if EV_USE_EPOLL
2538# include "ev_epoll.c" 3090# include "ev_epoll.c"
2539#endif 3091#endif
3092#if EV_USE_LINUXAIO
3093# include "ev_linuxaio.c"
3094#endif
3095#if EV_USE_IOURING
3096# include "ev_iouring.c"
3097#endif
2540#if EV_USE_POLL 3098#if EV_USE_POLL
2541# include "ev_poll.c" 3099# include "ev_poll.c"
2542#endif 3100#endif
2543#if EV_USE_SELECT 3101#if EV_USE_SELECT
2544# include "ev_select.c" 3102# include "ev_select.c"
2545#endif 3103#endif
2546 3104
2547int ecb_cold 3105ecb_cold int
2548ev_version_major (void) EV_THROW 3106ev_version_major (void) EV_NOEXCEPT
2549{ 3107{
2550 return EV_VERSION_MAJOR; 3108 return EV_VERSION_MAJOR;
2551} 3109}
2552 3110
2553int ecb_cold 3111ecb_cold int
2554ev_version_minor (void) EV_THROW 3112ev_version_minor (void) EV_NOEXCEPT
2555{ 3113{
2556 return EV_VERSION_MINOR; 3114 return EV_VERSION_MINOR;
2557} 3115}
2558 3116
2559/* return true if we are running with elevated privileges and should ignore env variables */ 3117/* return true if we are running with elevated privileges and should ignore env variables */
2560int inline_size ecb_cold 3118inline_size ecb_cold int
2561enable_secure (void) 3119enable_secure (void)
2562{ 3120{
2563#ifdef _WIN32 3121#ifdef _WIN32
2564 return 0; 3122 return 0;
2565#else 3123#else
2566 return getuid () != geteuid () 3124 return getuid () != geteuid ()
2567 || getgid () != getegid (); 3125 || getgid () != getegid ();
2568#endif 3126#endif
2569} 3127}
2570 3128
2571unsigned int ecb_cold 3129ecb_cold
3130unsigned int
2572ev_supported_backends (void) EV_THROW 3131ev_supported_backends (void) EV_NOEXCEPT
2573{ 3132{
2574 unsigned int flags = 0; 3133 unsigned int flags = 0;
2575 3134
2576 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 3135 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2577 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 3136 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
2578 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 3137 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2579 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 3138 if (EV_USE_LINUXAIO ) flags |= EVBACKEND_LINUXAIO;
2580 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 3139 if (EV_USE_IOURING && ev_linux_version () >= 0x050601) flags |= EVBACKEND_IOURING; /* 5.6.1+ */
2581 3140 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
3141 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
3142
2582 return flags; 3143 return flags;
2583} 3144}
2584 3145
2585unsigned int ecb_cold 3146ecb_cold
3147unsigned int
2586ev_recommended_backends (void) EV_THROW 3148ev_recommended_backends (void) EV_NOEXCEPT
2587{ 3149{
2588 unsigned int flags = ev_supported_backends (); 3150 unsigned int flags = ev_supported_backends ();
2589 3151
2590#ifndef __NetBSD__ 3152#ifndef __NetBSD__
2591 /* kqueue is borked on everything but netbsd apparently */ 3153 /* kqueue is borked on everything but netbsd apparently */
… …
2599#endif 3161#endif
2600#ifdef __FreeBSD__ 3162#ifdef __FreeBSD__
2601 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ 3163 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2602#endif 3164#endif
2603 3165
3166 /* TODO: linuxaio is very experimental */
3167#if !EV_RECOMMEND_LINUXAIO
3168 flags &= ~EVBACKEND_LINUXAIO;
3169#endif
3170 /* TODO: linuxaio is super experimental */
3171#if !EV_RECOMMEND_IOURING
3172 flags &= ~EVBACKEND_IOURING;
3173#endif
3174
2604 return flags; 3175 return flags;
2605} 3176}
2606 3177
2607unsigned int ecb_cold 3178ecb_cold
3179unsigned int
2608ev_embeddable_backends (void) EV_THROW 3180ev_embeddable_backends (void) EV_NOEXCEPT
2609{ 3181{
2610 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 3182 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT | EVBACKEND_IOURING;
2611 3183
2612 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 3184 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2613 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 3185 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2614 flags &= ~EVBACKEND_EPOLL; 3186 flags &= ~EVBACKEND_EPOLL;
2615 3187
3188 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
3189
2616 return flags; 3190 return flags;
2617} 3191}
2618 3192
2619unsigned int 3193unsigned int
2620ev_backend (EV_P) EV_THROW 3194ev_backend (EV_P) EV_NOEXCEPT
2621{ 3195{
2622 return backend; 3196 return backend;
2623} 3197}
2624 3198
2625#if EV_FEATURE_API 3199#if EV_FEATURE_API
2626unsigned int 3200unsigned int
2627ev_iteration (EV_P) EV_THROW 3201ev_iteration (EV_P) EV_NOEXCEPT
2628{ 3202{
2629 return loop_count; 3203 return loop_count;
2630} 3204}
2631 3205
2632unsigned int 3206unsigned int
2633ev_depth (EV_P) EV_THROW 3207ev_depth (EV_P) EV_NOEXCEPT
2634{ 3208{
2635 return loop_depth; 3209 return loop_depth;
2636} 3210}
2637 3211
2638void 3212void
2639ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW 3213ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2640{ 3214{
2641 io_blocktime = interval; 3215 io_blocktime = interval;
2642} 3216}
2643 3217
2644void 3218void
2645ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW 3219ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2646{ 3220{
2647 timeout_blocktime = interval; 3221 timeout_blocktime = interval;
2648} 3222}
2649 3223
2650void 3224void
2651ev_set_userdata (EV_P_ void *data) EV_THROW 3225ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2652{ 3226{
2653 userdata = data; 3227 userdata = data;
2654} 3228}
2655 3229
2656void * 3230void *
2657ev_userdata (EV_P) EV_THROW 3231ev_userdata (EV_P) EV_NOEXCEPT
2658{ 3232{
2659 return userdata; 3233 return userdata;
2660} 3234}
2661 3235
2662void 3236void
2663ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW 3237ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
2664{ 3238{
2665 invoke_cb = invoke_pending_cb; 3239 invoke_cb = invoke_pending_cb;
2666} 3240}
2667 3241
2668void 3242void
2669ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW 3243ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
2670{ 3244{
2671 release_cb = release; 3245 release_cb = release;
2672 acquire_cb = acquire; 3246 acquire_cb = acquire;
2673} 3247}
2674#endif 3248#endif
2675 3249
2676/* initialise a loop structure, must be zero-initialised */ 3250/* initialise a loop structure, must be zero-initialised */
2677static void noinline ecb_cold 3251ecb_noinline ecb_cold
3252static void
2678loop_init (EV_P_ unsigned int flags) EV_THROW 3253loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
2679{ 3254{
2680 if (!backend) 3255 if (!backend)
2681 { 3256 {
2682 origflags = flags; 3257 origflags = flags;
2683 3258
… …
2736 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3311 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2737#endif 3312#endif
2738#if EV_USE_SIGNALFD 3313#if EV_USE_SIGNALFD
2739 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 3314 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2740#endif 3315#endif
3316#if EV_USE_TIMERFD
3317 timerfd = flags & EVFLAG_NOTIMERFD ? -1 : -2;
3318#endif
2741 3319
2742 if (!(flags & EVBACKEND_MASK)) 3320 if (!(flags & EVBACKEND_MASK))
2743 flags |= ev_recommended_backends (); 3321 flags |= ev_recommended_backends ();
2744 3322
2745#if EV_USE_IOCP 3323#if EV_USE_IOCP
2746 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 3324 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2747#endif 3325#endif
2748#if EV_USE_PORT 3326#if EV_USE_PORT
2749 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3327 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
2750#endif 3328#endif
2751#if EV_USE_KQUEUE 3329#if EV_USE_KQUEUE
2752 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 3330 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
3331#endif
3332#if EV_USE_IOURING
3333 if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
3334#endif
3335#if EV_USE_LINUXAIO
3336 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
2753#endif 3337#endif
2754#if EV_USE_EPOLL 3338#if EV_USE_EPOLL
2755 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3339 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
2756#endif 3340#endif
2757#if EV_USE_POLL 3341#if EV_USE_POLL
2758 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3342 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
2759#endif 3343#endif
2760#if EV_USE_SELECT 3344#if EV_USE_SELECT
2761 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3345 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
2762#endif 3346#endif
2763 3347
2764 ev_prepare_init (&pending_w, pendingcb); 3348 ev_prepare_init (&pending_w, pendingcb);
2765 3349
2766#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3350#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
2769#endif 3353#endif
2770 } 3354 }
2771} 3355}
2772 3356
2773/* free up a loop structure */ 3357/* free up a loop structure */
2774void ecb_cold 3358ecb_cold
3359void
2775ev_loop_destroy (EV_P) 3360ev_loop_destroy (EV_P)
2776{ 3361{
2777 int i; 3362 int i;
2778 3363
2779#if EV_MULTIPLICITY 3364#if EV_MULTIPLICITY
… …
2782 return; 3367 return;
2783#endif 3368#endif
2784 3369
2785#if EV_CLEANUP_ENABLE 3370#if EV_CLEANUP_ENABLE
2786 /* queue cleanup watchers (and execute them) */ 3371 /* queue cleanup watchers (and execute them) */
2787 if (expect_false (cleanupcnt)) 3372 if (ecb_expect_false (cleanupcnt))
2788 { 3373 {
2789 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); 3374 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2790 EV_INVOKE_PENDING; 3375 EV_INVOKE_PENDING;
2791 } 3376 }
2792#endif 3377#endif
… …
2811#if EV_USE_SIGNALFD 3396#if EV_USE_SIGNALFD
2812 if (ev_is_active (&sigfd_w)) 3397 if (ev_is_active (&sigfd_w))
2813 close (sigfd); 3398 close (sigfd);
2814#endif 3399#endif
2815 3400
3401#if EV_USE_TIMERFD
3402 if (ev_is_active (&timerfd_w))
3403 close (timerfd);
3404#endif
3405
2816#if EV_USE_INOTIFY 3406#if EV_USE_INOTIFY
2817 if (fs_fd >= 0) 3407 if (fs_fd >= 0)
2818 close (fs_fd); 3408 close (fs_fd);
2819#endif 3409#endif
2820 3410
2821 if (backend_fd >= 0) 3411 if (backend_fd >= 0)
2822 close (backend_fd); 3412 close (backend_fd);
2823 3413
2824#if EV_USE_IOCP 3414#if EV_USE_IOCP
2825 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3415 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2826#endif 3416#endif
2827#if EV_USE_PORT 3417#if EV_USE_PORT
2828 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3418 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
2829#endif 3419#endif
2830#if EV_USE_KQUEUE 3420#if EV_USE_KQUEUE
2831 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3421 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3422#endif
3423#if EV_USE_IOURING
3424 if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
3425#endif
3426#if EV_USE_LINUXAIO
3427 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
2832#endif 3428#endif
2833#if EV_USE_EPOLL 3429#if EV_USE_EPOLL
2834 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3430 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
2835#endif 3431#endif
2836#if EV_USE_POLL 3432#if EV_USE_POLL
2837 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3433 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
2838#endif 3434#endif
2839#if EV_USE_SELECT 3435#if EV_USE_SELECT
2840 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3436 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
2841#endif 3437#endif
2842 3438
2843 for (i = NUMPRI; i--; ) 3439 for (i = NUMPRI; i--; )
2844 { 3440 {
2845 array_free (pending, [i]); 3441 array_free (pending, [i]);
… …
2887 3483
2888inline_size void 3484inline_size void
2889loop_fork (EV_P) 3485loop_fork (EV_P)
2890{ 3486{
2891#if EV_USE_PORT 3487#if EV_USE_PORT
2892 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3488 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
2893#endif 3489#endif
2894#if EV_USE_KQUEUE 3490#if EV_USE_KQUEUE
2895 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3491 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3492#endif
3493#if EV_USE_IOURING
3494 if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
3495#endif
3496#if EV_USE_LINUXAIO
3497 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
2896#endif 3498#endif
2897#if EV_USE_EPOLL 3499#if EV_USE_EPOLL
2898 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3500 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
2899#endif 3501#endif
2900#if EV_USE_INOTIFY 3502#if EV_USE_INOTIFY
2901 infy_fork (EV_A); 3503 infy_fork (EV_A);
2902#endif 3504#endif
2903 3505
3506 if (postfork != 2)
3507 {
3508 #if EV_USE_SIGNALFD
3509 /* surprisingly, nothing needs to be done for signalfd, accoridng to docs, it does the right thing on fork */
3510 #endif
3511
3512 #if EV_USE_TIMERFD
3513 if (ev_is_active (&timerfd_w))
3514 {
3515 ev_ref (EV_A);
3516 ev_io_stop (EV_A_ &timerfd_w);
3517
3518 close (timerfd);
3519 timerfd = -2;
3520
3521 evtimerfd_init (EV_A);
3522 /* reschedule periodics, in case we missed something */
3523 ev_feed_event (EV_A_ &timerfd_w, EV_CUSTOM);
3524 }
3525 #endif
3526
2904#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3527 #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2905 if (ev_is_active (&pipe_w)) 3528 if (ev_is_active (&pipe_w))
2906 { 3529 {
2907 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 3530 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2908 3531
2909 ev_ref (EV_A); 3532 ev_ref (EV_A);
2910 ev_io_stop (EV_A_ &pipe_w); 3533 ev_io_stop (EV_A_ &pipe_w);
2911 3534
2912 if (evpipe [0] >= 0) 3535 if (evpipe [0] >= 0)
2913 EV_WIN32_CLOSE_FD (evpipe [0]); 3536 EV_WIN32_CLOSE_FD (evpipe [0]);
2914 3537
2915 evpipe_init (EV_A); 3538 evpipe_init (EV_A);
2916 /* iterate over everything, in case we missed something before */ 3539 /* iterate over everything, in case we missed something before */
2917 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3540 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3541 }
3542 #endif
2918 } 3543 }
2919#endif
2920 3544
2921 postfork = 0; 3545 postfork = 0;
2922} 3546}
2923 3547
2924#if EV_MULTIPLICITY 3548#if EV_MULTIPLICITY
2925 3549
3550ecb_cold
2926struct ev_loop * ecb_cold 3551struct ev_loop *
2927ev_loop_new (unsigned int flags) EV_THROW 3552ev_loop_new (unsigned int flags) EV_NOEXCEPT
2928{ 3553{
2929 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3554 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2930 3555
2931 memset (EV_A, 0, sizeof (struct ev_loop)); 3556 memset (EV_A, 0, sizeof (struct ev_loop));
2932 loop_init (EV_A_ flags); 3557 loop_init (EV_A_ flags);
… …
2939} 3564}
2940 3565
2941#endif /* multiplicity */ 3566#endif /* multiplicity */
2942 3567
2943#if EV_VERIFY 3568#if EV_VERIFY
2944static void noinline ecb_cold 3569ecb_noinline ecb_cold
3570static void
2945verify_watcher (EV_P_ W w) 3571verify_watcher (EV_P_ W w)
2946{ 3572{
2947 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3573 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2948 3574
2949 if (w->pending) 3575 if (w->pending)
2950 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3576 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2951} 3577}
2952 3578
2953static void noinline ecb_cold 3579ecb_noinline ecb_cold
3580static void
2954verify_heap (EV_P_ ANHE *heap, int N) 3581verify_heap (EV_P_ ANHE *heap, int N)
2955{ 3582{
2956 int i; 3583 int i;
2957 3584
2958 for (i = HEAP0; i < N + HEAP0; ++i) 3585 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2963 3590
2964 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3591 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2965 } 3592 }
2966} 3593}
2967 3594
2968static void noinline ecb_cold 3595ecb_noinline ecb_cold
3596static void
2969array_verify (EV_P_ W *ws, int cnt) 3597array_verify (EV_P_ W *ws, int cnt)
2970{ 3598{
2971 while (cnt--) 3599 while (cnt--)
2972 { 3600 {
2973 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3601 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2976} 3604}
2977#endif 3605#endif
2978 3606
2979#if EV_FEATURE_API 3607#if EV_FEATURE_API
2980void ecb_cold 3608void ecb_cold
2981ev_verify (EV_P) EV_THROW 3609ev_verify (EV_P) EV_NOEXCEPT
2982{ 3610{
2983#if EV_VERIFY 3611#if EV_VERIFY
2984 int i; 3612 int i;
2985 WL w, w2; 3613 WL w, w2;
2986 3614
… …
3062#endif 3690#endif
3063} 3691}
3064#endif 3692#endif
3065 3693
3066#if EV_MULTIPLICITY 3694#if EV_MULTIPLICITY
3695ecb_cold
3067struct ev_loop * ecb_cold 3696struct ev_loop *
3068#else 3697#else
3069int 3698int
3070#endif 3699#endif
3071ev_default_loop (unsigned int flags) EV_THROW 3700ev_default_loop (unsigned int flags) EV_NOEXCEPT
3072{ 3701{
3073 if (!ev_default_loop_ptr) 3702 if (!ev_default_loop_ptr)
3074 { 3703 {
3075#if EV_MULTIPLICITY 3704#if EV_MULTIPLICITY
3076 EV_P = ev_default_loop_ptr = &default_loop_struct; 3705 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
3095 3724
3096 return ev_default_loop_ptr; 3725 return ev_default_loop_ptr;
3097} 3726}
3098 3727
3099void 3728void
3100ev_loop_fork (EV_P) EV_THROW 3729ev_loop_fork (EV_P) EV_NOEXCEPT
3101{ 3730{
3102 postfork = 1; 3731 postfork = 1;
3103} 3732}
3104 3733
3105/*****************************************************************************/ 3734/*****************************************************************************/
… …
3109{ 3738{
3110 EV_CB_INVOKE ((W)w, revents); 3739 EV_CB_INVOKE ((W)w, revents);
3111} 3740}
3112 3741
3113unsigned int 3742unsigned int
3114ev_pending_count (EV_P) EV_THROW 3743ev_pending_count (EV_P) EV_NOEXCEPT
3115{ 3744{
3116 int pri; 3745 int pri;
3117 unsigned int count = 0; 3746 unsigned int count = 0;
3118 3747
3119 for (pri = NUMPRI; pri--; ) 3748 for (pri = NUMPRI; pri--; )
3120 count += pendingcnt [pri]; 3749 count += pendingcnt [pri];
3121 3750
3122 return count; 3751 return count;
3123} 3752}
3124 3753
3125void noinline 3754ecb_noinline
3755void
3126ev_invoke_pending (EV_P) 3756ev_invoke_pending (EV_P)
3127{ 3757{
3128 pendingpri = NUMPRI; 3758 pendingpri = NUMPRI;
3129 3759
3130 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */ 3760 do
3131 { 3761 {
3132 --pendingpri; 3762 --pendingpri;
3133 3763
3764 /* pendingpri possibly gets modified in the inner loop */
3134 while (pendingcnt [pendingpri]) 3765 while (pendingcnt [pendingpri])
3135 { 3766 {
3136 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri]; 3767 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
3137 3768
3138 p->w->pending = 0; 3769 p->w->pending = 0;
3139 EV_CB_INVOKE (p->w, p->events); 3770 EV_CB_INVOKE (p->w, p->events);
3140 EV_FREQUENT_CHECK; 3771 EV_FREQUENT_CHECK;
3141 } 3772 }
3142 } 3773 }
3774 while (pendingpri);
3143} 3775}
3144 3776
3145#if EV_IDLE_ENABLE 3777#if EV_IDLE_ENABLE
3146/* make idle watchers pending. this handles the "call-idle */ 3778/* make idle watchers pending. this handles the "call-idle */
3147/* only when higher priorities are idle" logic */ 3779/* only when higher priorities are idle" logic */
3148inline_size void 3780inline_size void
3149idle_reify (EV_P) 3781idle_reify (EV_P)
3150{ 3782{
3151 if (expect_false (idleall)) 3783 if (ecb_expect_false (idleall))
3152 { 3784 {
3153 int pri; 3785 int pri;
3154 3786
3155 for (pri = NUMPRI; pri--; ) 3787 for (pri = NUMPRI; pri--; )
3156 { 3788 {
… …
3186 { 3818 {
3187 ev_at (w) += w->repeat; 3819 ev_at (w) += w->repeat;
3188 if (ev_at (w) < mn_now) 3820 if (ev_at (w) < mn_now)
3189 ev_at (w) = mn_now; 3821 ev_at (w) = mn_now;
3190 3822
3191 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 3823 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > EV_TS_CONST (0.)));
3192 3824
3193 ANHE_at_cache (timers [HEAP0]); 3825 ANHE_at_cache (timers [HEAP0]);
3194 downheap (timers, timercnt, HEAP0); 3826 downheap (timers, timercnt, HEAP0);
3195 } 3827 }
3196 else 3828 else
… …
3205 } 3837 }
3206} 3838}
3207 3839
3208#if EV_PERIODIC_ENABLE 3840#if EV_PERIODIC_ENABLE
3209 3841
3210static void noinline 3842ecb_noinline
3843static void
3211periodic_recalc (EV_P_ ev_periodic *w) 3844periodic_recalc (EV_P_ ev_periodic *w)
3212{ 3845{
3213 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3846 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3214 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); 3847 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3215 3848
… …
3217 while (at <= ev_rt_now) 3850 while (at <= ev_rt_now)
3218 { 3851 {
3219 ev_tstamp nat = at + w->interval; 3852 ev_tstamp nat = at + w->interval;
3220 3853
3221 /* when resolution fails us, we use ev_rt_now */ 3854 /* when resolution fails us, we use ev_rt_now */
3222 if (expect_false (nat == at)) 3855 if (ecb_expect_false (nat == at))
3223 { 3856 {
3224 at = ev_rt_now; 3857 at = ev_rt_now;
3225 break; 3858 break;
3226 } 3859 }
3227 3860
… …
3273 } 3906 }
3274} 3907}
3275 3908
3276/* simply recalculate all periodics */ 3909/* simply recalculate all periodics */
3277/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3910/* TODO: maybe ensure that at least one event happens when jumping forward? */
3278static void noinline ecb_cold 3911ecb_noinline ecb_cold
3912static void
3279periodics_reschedule (EV_P) 3913periodics_reschedule (EV_P)
3280{ 3914{
3281 int i; 3915 int i;
3282 3916
3283 /* adjust periodics after time jump */ 3917 /* adjust periodics after time jump */
… …
3296 reheap (periodics, periodiccnt); 3930 reheap (periodics, periodiccnt);
3297} 3931}
3298#endif 3932#endif
3299 3933
3300/* adjust all timers by a given offset */ 3934/* adjust all timers by a given offset */
3301static void noinline ecb_cold 3935ecb_noinline ecb_cold
3936static void
3302timers_reschedule (EV_P_ ev_tstamp adjust) 3937timers_reschedule (EV_P_ ev_tstamp adjust)
3303{ 3938{
3304 int i; 3939 int i;
3305 3940
3306 for (i = 0; i < timercnt; ++i) 3941 for (i = 0; i < timercnt; ++i)
… …
3315/* also detect if there was a timejump, and act accordingly */ 3950/* also detect if there was a timejump, and act accordingly */
3316inline_speed void 3951inline_speed void
3317time_update (EV_P_ ev_tstamp max_block) 3952time_update (EV_P_ ev_tstamp max_block)
3318{ 3953{
3319#if EV_USE_MONOTONIC 3954#if EV_USE_MONOTONIC
3320 if (expect_true (have_monotonic)) 3955 if (ecb_expect_true (have_monotonic))
3321 { 3956 {
3322 int i; 3957 int i;
3323 ev_tstamp odiff = rtmn_diff; 3958 ev_tstamp odiff = rtmn_diff;
3324 3959
3325 mn_now = get_clock (); 3960 mn_now = get_clock ();
3326 3961
3327 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3962 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
3328 /* interpolate in the meantime */ 3963 /* interpolate in the meantime */
3329 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3964 if (ecb_expect_true (mn_now - now_floor < EV_TS_CONST (MIN_TIMEJUMP * .5)))
3330 { 3965 {
3331 ev_rt_now = rtmn_diff + mn_now; 3966 ev_rt_now = rtmn_diff + mn_now;
3332 return; 3967 return;
3333 } 3968 }
3334 3969
… …
3348 ev_tstamp diff; 3983 ev_tstamp diff;
3349 rtmn_diff = ev_rt_now - mn_now; 3984 rtmn_diff = ev_rt_now - mn_now;
3350 3985
3351 diff = odiff - rtmn_diff; 3986 diff = odiff - rtmn_diff;
3352 3987
3353 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP)) 3988 if (ecb_expect_true ((diff < EV_TS_CONST (0.) ? -diff : diff) < EV_TS_CONST (MIN_TIMEJUMP)))
3354 return; /* all is well */ 3989 return; /* all is well */
3355 3990
3356 ev_rt_now = ev_time (); 3991 ev_rt_now = ev_time ();
3357 mn_now = get_clock (); 3992 mn_now = get_clock ();
3358 now_floor = mn_now; 3993 now_floor = mn_now;
… …
3367 else 4002 else
3368#endif 4003#endif
3369 { 4004 {
3370 ev_rt_now = ev_time (); 4005 ev_rt_now = ev_time ();
3371 4006
3372 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 4007 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + EV_TS_CONST (MIN_TIMEJUMP)))
3373 { 4008 {
3374 /* adjust timers. this is easy, as the offset is the same for all of them */ 4009 /* adjust timers. this is easy, as the offset is the same for all of them */
3375 timers_reschedule (EV_A_ ev_rt_now - mn_now); 4010 timers_reschedule (EV_A_ ev_rt_now - mn_now);
3376#if EV_PERIODIC_ENABLE 4011#if EV_PERIODIC_ENABLE
3377 periodics_reschedule (EV_A); 4012 periodics_reschedule (EV_A);
… …
3400#if EV_VERIFY >= 2 4035#if EV_VERIFY >= 2
3401 ev_verify (EV_A); 4036 ev_verify (EV_A);
3402#endif 4037#endif
3403 4038
3404#ifndef _WIN32 4039#ifndef _WIN32
3405 if (expect_false (curpid)) /* penalise the forking check even more */ 4040 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
3406 if (expect_false (getpid () != curpid)) 4041 if (ecb_expect_false (getpid () != curpid))
3407 { 4042 {
3408 curpid = getpid (); 4043 curpid = getpid ();
3409 postfork = 1; 4044 postfork = 1;
3410 } 4045 }
3411#endif 4046#endif
3412 4047
3413#if EV_FORK_ENABLE 4048#if EV_FORK_ENABLE
3414 /* we might have forked, so queue fork handlers */ 4049 /* we might have forked, so queue fork handlers */
3415 if (expect_false (postfork)) 4050 if (ecb_expect_false (postfork))
3416 if (forkcnt) 4051 if (forkcnt)
3417 { 4052 {
3418 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 4053 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
3419 EV_INVOKE_PENDING; 4054 EV_INVOKE_PENDING;
3420 } 4055 }
3421#endif 4056#endif
3422 4057
3423#if EV_PREPARE_ENABLE 4058#if EV_PREPARE_ENABLE
3424 /* queue prepare watchers (and execute them) */ 4059 /* queue prepare watchers (and execute them) */
3425 if (expect_false (preparecnt)) 4060 if (ecb_expect_false (preparecnt))
3426 { 4061 {
3427 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 4062 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
3428 EV_INVOKE_PENDING; 4063 EV_INVOKE_PENDING;
3429 } 4064 }
3430#endif 4065#endif
3431 4066
3432 if (expect_false (loop_done)) 4067 if (ecb_expect_false (loop_done))
3433 break; 4068 break;
3434 4069
3435 /* we might have forked, so reify kernel state if necessary */ 4070 /* we might have forked, so reify kernel state if necessary */
3436 if (expect_false (postfork)) 4071 if (ecb_expect_false (postfork))
3437 loop_fork (EV_A); 4072 loop_fork (EV_A);
3438 4073
3439 /* update fd-related kernel structures */ 4074 /* update fd-related kernel structures */
3440 fd_reify (EV_A); 4075 fd_reify (EV_A);
3441 4076
… …
3446 4081
3447 /* remember old timestamp for io_blocktime calculation */ 4082 /* remember old timestamp for io_blocktime calculation */
3448 ev_tstamp prev_mn_now = mn_now; 4083 ev_tstamp prev_mn_now = mn_now;
3449 4084
3450 /* update time to cancel out callback processing overhead */ 4085 /* update time to cancel out callback processing overhead */
3451 time_update (EV_A_ 1e100); 4086 time_update (EV_A_ EV_TS_CONST (EV_TSTAMP_HUGE));
3452 4087
3453 /* from now on, we want a pipe-wake-up */ 4088 /* from now on, we want a pipe-wake-up */
3454 pipe_write_wanted = 1; 4089 pipe_write_wanted = 1;
3455 4090
3456 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */ 4091 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3457 4092
3458 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) 4093 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
3459 { 4094 {
3460 waittime = MAX_BLOCKTIME; 4095 waittime = EV_TS_CONST (MAX_BLOCKTIME);
4096
4097#if EV_USE_TIMERFD
4098 /* sleep a lot longer when we can reliably detect timejumps */
4099 if (ecb_expect_true (timerfd >= 0))
4100 waittime = EV_TS_CONST (MAX_BLOCKTIME2);
4101#endif
4102#if !EV_PERIODIC_ENABLE
4103 /* without periodics but with monotonic clock there is no need */
4104 /* for any time jump detection, so sleep longer */
4105 if (ecb_expect_true (have_monotonic))
4106 waittime = EV_TS_CONST (MAX_BLOCKTIME2);
4107#endif
3461 4108
3462 if (timercnt) 4109 if (timercnt)
3463 { 4110 {
3464 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now; 4111 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
3465 if (waittime > to) waittime = to; 4112 if (waittime > to) waittime = to;
… …
3472 if (waittime > to) waittime = to; 4119 if (waittime > to) waittime = to;
3473 } 4120 }
3474#endif 4121#endif
3475 4122
3476 /* don't let timeouts decrease the waittime below timeout_blocktime */ 4123 /* don't let timeouts decrease the waittime below timeout_blocktime */
3477 if (expect_false (waittime < timeout_blocktime)) 4124 if (ecb_expect_false (waittime < timeout_blocktime))
3478 waittime = timeout_blocktime; 4125 waittime = timeout_blocktime;
3479 4126
3480 /* at this point, we NEED to wait, so we have to ensure */ 4127 /* now there are two more special cases left, either we have
3481 /* to pass a minimum nonzero value to the backend */ 4128 * already-expired timers, so we should not sleep, or we have timers
4129 * that expire very soon, in which case we need to wait for a minimum
4130 * amount of time for some event loop backends.
4131 */
3482 if (expect_false (waittime < backend_mintime)) 4132 if (ecb_expect_false (waittime < backend_mintime))
4133 waittime = waittime <= EV_TS_CONST (0.)
4134 ? EV_TS_CONST (0.)
3483 waittime = backend_mintime; 4135 : backend_mintime;
3484 4136
3485 /* extra check because io_blocktime is commonly 0 */ 4137 /* extra check because io_blocktime is commonly 0 */
3486 if (expect_false (io_blocktime)) 4138 if (ecb_expect_false (io_blocktime))
3487 { 4139 {
3488 sleeptime = io_blocktime - (mn_now - prev_mn_now); 4140 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3489 4141
3490 if (sleeptime > waittime - backend_mintime) 4142 if (sleeptime > waittime - backend_mintime)
3491 sleeptime = waittime - backend_mintime; 4143 sleeptime = waittime - backend_mintime;
3492 4144
3493 if (expect_true (sleeptime > 0.)) 4145 if (ecb_expect_true (sleeptime > EV_TS_CONST (0.)))
3494 { 4146 {
3495 ev_sleep (sleeptime); 4147 ev_sleep (sleeptime);
3496 waittime -= sleeptime; 4148 waittime -= sleeptime;
3497 } 4149 }
3498 } 4150 }
… …
3512 { 4164 {
3513 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 4165 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3514 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 4166 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3515 } 4167 }
3516 4168
3517
3518 /* update ev_rt_now, do magic */ 4169 /* update ev_rt_now, do magic */
3519 time_update (EV_A_ waittime + sleeptime); 4170 time_update (EV_A_ waittime + sleeptime);
3520 } 4171 }
3521 4172
3522 /* queue pending timers and reschedule them */ 4173 /* queue pending timers and reschedule them */
… …
3530 idle_reify (EV_A); 4181 idle_reify (EV_A);
3531#endif 4182#endif
3532 4183
3533#if EV_CHECK_ENABLE 4184#if EV_CHECK_ENABLE
3534 /* queue check watchers, to be executed first */ 4185 /* queue check watchers, to be executed first */
3535 if (expect_false (checkcnt)) 4186 if (ecb_expect_false (checkcnt))
3536 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 4187 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3537#endif 4188#endif
3538 4189
3539 EV_INVOKE_PENDING; 4190 EV_INVOKE_PENDING;
3540 } 4191 }
3541 while (expect_true ( 4192 while (ecb_expect_true (
3542 activecnt 4193 activecnt
3543 && !loop_done 4194 && !loop_done
3544 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) 4195 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
3545 )); 4196 ));
3546 4197
… …
3553 4204
3554 return activecnt; 4205 return activecnt;
3555} 4206}
3556 4207
3557void 4208void
3558ev_break (EV_P_ int how) EV_THROW 4209ev_break (EV_P_ int how) EV_NOEXCEPT
3559{ 4210{
3560 loop_done = how; 4211 loop_done = how;
3561} 4212}
3562 4213
3563void 4214void
3564ev_ref (EV_P) EV_THROW 4215ev_ref (EV_P) EV_NOEXCEPT
3565{ 4216{
3566 ++activecnt; 4217 ++activecnt;
3567} 4218}
3568 4219
3569void 4220void
3570ev_unref (EV_P) EV_THROW 4221ev_unref (EV_P) EV_NOEXCEPT
3571{ 4222{
3572 --activecnt; 4223 --activecnt;
3573} 4224}
3574 4225
3575void 4226void
3576ev_now_update (EV_P) EV_THROW 4227ev_now_update (EV_P) EV_NOEXCEPT
3577{ 4228{
3578 time_update (EV_A_ 1e100); 4229 time_update (EV_A_ EV_TSTAMP_HUGE);
3579} 4230}
3580 4231
3581void 4232void
3582ev_suspend (EV_P) EV_THROW 4233ev_suspend (EV_P) EV_NOEXCEPT
3583{ 4234{
3584 ev_now_update (EV_A); 4235 ev_now_update (EV_A);
3585} 4236}
3586 4237
3587void 4238void
3588ev_resume (EV_P) EV_THROW 4239ev_resume (EV_P) EV_NOEXCEPT
3589{ 4240{
3590 ev_tstamp mn_prev = mn_now; 4241 ev_tstamp mn_prev = mn_now;
3591 4242
3592 ev_now_update (EV_A); 4243 ev_now_update (EV_A);
3593 timers_reschedule (EV_A_ mn_now - mn_prev); 4244 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
3610inline_size void 4261inline_size void
3611wlist_del (WL *head, WL elem) 4262wlist_del (WL *head, WL elem)
3612{ 4263{
3613 while (*head) 4264 while (*head)
3614 { 4265 {
3615 if (expect_true (*head == elem)) 4266 if (ecb_expect_true (*head == elem))
3616 { 4267 {
3617 *head = elem->next; 4268 *head = elem->next;
3618 break; 4269 break;
3619 } 4270 }
3620 4271
… …
3632 w->pending = 0; 4283 w->pending = 0;
3633 } 4284 }
3634} 4285}
3635 4286
3636int 4287int
3637ev_clear_pending (EV_P_ void *w) EV_THROW 4288ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
3638{ 4289{
3639 W w_ = (W)w; 4290 W w_ = (W)w;
3640 int pending = w_->pending; 4291 int pending = w_->pending;
3641 4292
3642 if (expect_true (pending)) 4293 if (ecb_expect_true (pending))
3643 { 4294 {
3644 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4295 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3645 p->w = (W)&pending_w; 4296 p->w = (W)&pending_w;
3646 w_->pending = 0; 4297 w_->pending = 0;
3647 return p->events; 4298 return p->events;
… …
3674 w->active = 0; 4325 w->active = 0;
3675} 4326}
3676 4327
3677/*****************************************************************************/ 4328/*****************************************************************************/
3678 4329
3679void noinline 4330ecb_noinline
4331void
3680ev_io_start (EV_P_ ev_io *w) EV_THROW 4332ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
3681{ 4333{
3682 int fd = w->fd; 4334 int fd = w->fd;
3683 4335
3684 if (expect_false (ev_is_active (w))) 4336 if (ecb_expect_false (ev_is_active (w)))
3685 return; 4337 return;
3686 4338
3687 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4339 assert (("libev: ev_io_start called with negative fd", fd >= 0));
3688 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 4340 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
3689 4341
4342#if EV_VERIFY >= 2
4343 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4344#endif
3690 EV_FREQUENT_CHECK; 4345 EV_FREQUENT_CHECK;
3691 4346
3692 ev_start (EV_A_ (W)w, 1); 4347 ev_start (EV_A_ (W)w, 1);
3693 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4348 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
3694 wlist_add (&anfds[fd].head, (WL)w); 4349 wlist_add (&anfds[fd].head, (WL)w);
3695 4350
3696 /* common bug, apparently */ 4351 /* common bug, apparently */
3697 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w)); 4352 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3698 4353
… …
3700 w->events &= ~EV__IOFDSET; 4355 w->events &= ~EV__IOFDSET;
3701 4356
3702 EV_FREQUENT_CHECK; 4357 EV_FREQUENT_CHECK;
3703} 4358}
3704 4359
3705void noinline 4360ecb_noinline
4361void
3706ev_io_stop (EV_P_ ev_io *w) EV_THROW 4362ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
3707{ 4363{
3708 clear_pending (EV_A_ (W)w); 4364 clear_pending (EV_A_ (W)w);
3709 if (expect_false (!ev_is_active (w))) 4365 if (ecb_expect_false (!ev_is_active (w)))
3710 return; 4366 return;
3711 4367
3712 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4368 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
3713 4369
4370#if EV_VERIFY >= 2
4371 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4372#endif
3714 EV_FREQUENT_CHECK; 4373 EV_FREQUENT_CHECK;
3715 4374
3716 wlist_del (&anfds[w->fd].head, (WL)w); 4375 wlist_del (&anfds[w->fd].head, (WL)w);
3717 ev_stop (EV_A_ (W)w); 4376 ev_stop (EV_A_ (W)w);
3718 4377
3719 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 4378 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3720 4379
3721 EV_FREQUENT_CHECK; 4380 EV_FREQUENT_CHECK;
3722} 4381}
3723 4382
3724void noinline 4383ecb_noinline
4384void
3725ev_timer_start (EV_P_ ev_timer *w) EV_THROW 4385ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
3726{ 4386{
3727 if (expect_false (ev_is_active (w))) 4387 if (ecb_expect_false (ev_is_active (w)))
3728 return; 4388 return;
3729 4389
3730 ev_at (w) += mn_now; 4390 ev_at (w) += mn_now;
3731 4391
3732 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4392 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
3733 4393
3734 EV_FREQUENT_CHECK; 4394 EV_FREQUENT_CHECK;
3735 4395
3736 ++timercnt; 4396 ++timercnt;
3737 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4397 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
3738 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4398 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
3739 ANHE_w (timers [ev_active (w)]) = (WT)w; 4399 ANHE_w (timers [ev_active (w)]) = (WT)w;
3740 ANHE_at_cache (timers [ev_active (w)]); 4400 ANHE_at_cache (timers [ev_active (w)]);
3741 upheap (timers, ev_active (w)); 4401 upheap (timers, ev_active (w));
3742 4402
3743 EV_FREQUENT_CHECK; 4403 EV_FREQUENT_CHECK;
3744 4404
3745 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4405 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
3746} 4406}
3747 4407
3748void noinline 4408ecb_noinline
4409void
3749ev_timer_stop (EV_P_ ev_timer *w) EV_THROW 4410ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
3750{ 4411{
3751 clear_pending (EV_A_ (W)w); 4412 clear_pending (EV_A_ (W)w);
3752 if (expect_false (!ev_is_active (w))) 4413 if (ecb_expect_false (!ev_is_active (w)))
3753 return; 4414 return;
3754 4415
3755 EV_FREQUENT_CHECK; 4416 EV_FREQUENT_CHECK;
3756 4417
3757 { 4418 {
… …
3759 4420
3760 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4421 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
3761 4422
3762 --timercnt; 4423 --timercnt;
3763 4424
3764 if (expect_true (active < timercnt + HEAP0)) 4425 if (ecb_expect_true (active < timercnt + HEAP0))
3765 { 4426 {
3766 timers [active] = timers [timercnt + HEAP0]; 4427 timers [active] = timers [timercnt + HEAP0];
3767 adjustheap (timers, timercnt, active); 4428 adjustheap (timers, timercnt, active);
3768 } 4429 }
3769 } 4430 }
… …
3773 ev_stop (EV_A_ (W)w); 4434 ev_stop (EV_A_ (W)w);
3774 4435
3775 EV_FREQUENT_CHECK; 4436 EV_FREQUENT_CHECK;
3776} 4437}
3777 4438
3778void noinline 4439ecb_noinline
4440void
3779ev_timer_again (EV_P_ ev_timer *w) EV_THROW 4441ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
3780{ 4442{
3781 EV_FREQUENT_CHECK; 4443 EV_FREQUENT_CHECK;
3782 4444
3783 clear_pending (EV_A_ (W)w); 4445 clear_pending (EV_A_ (W)w);
3784 4446
… …
3801 4463
3802 EV_FREQUENT_CHECK; 4464 EV_FREQUENT_CHECK;
3803} 4465}
3804 4466
3805ev_tstamp 4467ev_tstamp
3806ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW 4468ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
3807{ 4469{
3808 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4470 return ev_at (w) - (ev_is_active (w) ? mn_now : EV_TS_CONST (0.));
3809} 4471}
3810 4472
3811#if EV_PERIODIC_ENABLE 4473#if EV_PERIODIC_ENABLE
3812void noinline 4474ecb_noinline
4475void
3813ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW 4476ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
3814{ 4477{
3815 if (expect_false (ev_is_active (w))) 4478 if (ecb_expect_false (ev_is_active (w)))
3816 return; 4479 return;
4480
4481#if EV_USE_TIMERFD
4482 if (timerfd == -2)
4483 evtimerfd_init (EV_A);
4484#endif
3817 4485
3818 if (w->reschedule_cb) 4486 if (w->reschedule_cb)
3819 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4487 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
3820 else if (w->interval) 4488 else if (w->interval)
3821 { 4489 {
… …
3827 4495
3828 EV_FREQUENT_CHECK; 4496 EV_FREQUENT_CHECK;
3829 4497
3830 ++periodiccnt; 4498 ++periodiccnt;
3831 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4499 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
3832 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4500 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
3833 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4501 ANHE_w (periodics [ev_active (w)]) = (WT)w;
3834 ANHE_at_cache (periodics [ev_active (w)]); 4502 ANHE_at_cache (periodics [ev_active (w)]);
3835 upheap (periodics, ev_active (w)); 4503 upheap (periodics, ev_active (w));
3836 4504
3837 EV_FREQUENT_CHECK; 4505 EV_FREQUENT_CHECK;
3838 4506
3839 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4507 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
3840} 4508}
3841 4509
3842void noinline 4510ecb_noinline
4511void
3843ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW 4512ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
3844{ 4513{
3845 clear_pending (EV_A_ (W)w); 4514 clear_pending (EV_A_ (W)w);
3846 if (expect_false (!ev_is_active (w))) 4515 if (ecb_expect_false (!ev_is_active (w)))
3847 return; 4516 return;
3848 4517
3849 EV_FREQUENT_CHECK; 4518 EV_FREQUENT_CHECK;
3850 4519
3851 { 4520 {
… …
3853 4522
3854 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4523 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
3855 4524
3856 --periodiccnt; 4525 --periodiccnt;
3857 4526
3858 if (expect_true (active < periodiccnt + HEAP0)) 4527 if (ecb_expect_true (active < periodiccnt + HEAP0))
3859 { 4528 {
3860 periodics [active] = periodics [periodiccnt + HEAP0]; 4529 periodics [active] = periodics [periodiccnt + HEAP0];
3861 adjustheap (periodics, periodiccnt, active); 4530 adjustheap (periodics, periodiccnt, active);
3862 } 4531 }
3863 } 4532 }
… …
3865 ev_stop (EV_A_ (W)w); 4534 ev_stop (EV_A_ (W)w);
3866 4535
3867 EV_FREQUENT_CHECK; 4536 EV_FREQUENT_CHECK;
3868} 4537}
3869 4538
3870void noinline 4539ecb_noinline
4540void
3871ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW 4541ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
3872{ 4542{
3873 /* TODO: use adjustheap and recalculation */ 4543 /* TODO: use adjustheap and recalculation */
3874 ev_periodic_stop (EV_A_ w); 4544 ev_periodic_stop (EV_A_ w);
3875 ev_periodic_start (EV_A_ w); 4545 ev_periodic_start (EV_A_ w);
3876} 4546}
… …
3880# define SA_RESTART 0 4550# define SA_RESTART 0
3881#endif 4551#endif
3882 4552
3883#if EV_SIGNAL_ENABLE 4553#if EV_SIGNAL_ENABLE
3884 4554
3885void noinline 4555ecb_noinline
4556void
3886ev_signal_start (EV_P_ ev_signal *w) EV_THROW 4557ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
3887{ 4558{
3888 if (expect_false (ev_is_active (w))) 4559 if (ecb_expect_false (ev_is_active (w)))
3889 return; 4560 return;
3890 4561
3891 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4562 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
3892 4563
3893#if EV_MULTIPLICITY 4564#if EV_MULTIPLICITY
… …
3962 } 4633 }
3963 4634
3964 EV_FREQUENT_CHECK; 4635 EV_FREQUENT_CHECK;
3965} 4636}
3966 4637
3967void noinline 4638ecb_noinline
4639void
3968ev_signal_stop (EV_P_ ev_signal *w) EV_THROW 4640ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
3969{ 4641{
3970 clear_pending (EV_A_ (W)w); 4642 clear_pending (EV_A_ (W)w);
3971 if (expect_false (!ev_is_active (w))) 4643 if (ecb_expect_false (!ev_is_active (w)))
3972 return; 4644 return;
3973 4645
3974 EV_FREQUENT_CHECK; 4646 EV_FREQUENT_CHECK;
3975 4647
3976 wlist_del (&signals [w->signum - 1].head, (WL)w); 4648 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
4004#endif 4676#endif
4005 4677
4006#if EV_CHILD_ENABLE 4678#if EV_CHILD_ENABLE
4007 4679
4008void 4680void
4009ev_child_start (EV_P_ ev_child *w) EV_THROW 4681ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
4010{ 4682{
4011#if EV_MULTIPLICITY 4683#if EV_MULTIPLICITY
4012 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4684 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
4013#endif 4685#endif
4014 if (expect_false (ev_is_active (w))) 4686 if (ecb_expect_false (ev_is_active (w)))
4015 return; 4687 return;
4016 4688
4017 EV_FREQUENT_CHECK; 4689 EV_FREQUENT_CHECK;
4018 4690
4019 ev_start (EV_A_ (W)w, 1); 4691 ev_start (EV_A_ (W)w, 1);
… …
4021 4693
4022 EV_FREQUENT_CHECK; 4694 EV_FREQUENT_CHECK;
4023} 4695}
4024 4696
4025void 4697void
4026ev_child_stop (EV_P_ ev_child *w) EV_THROW 4698ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
4027{ 4699{
4028 clear_pending (EV_A_ (W)w); 4700 clear_pending (EV_A_ (W)w);
4029 if (expect_false (!ev_is_active (w))) 4701 if (ecb_expect_false (!ev_is_active (w)))
4030 return; 4702 return;
4031 4703
4032 EV_FREQUENT_CHECK; 4704 EV_FREQUENT_CHECK;
4033 4705
4034 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); 4706 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
… …
4048 4720
4049#define DEF_STAT_INTERVAL 5.0074891 4721#define DEF_STAT_INTERVAL 5.0074891
4050#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4722#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
4051#define MIN_STAT_INTERVAL 0.1074891 4723#define MIN_STAT_INTERVAL 0.1074891
4052 4724
4053static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4725ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
4054 4726
4055#if EV_USE_INOTIFY 4727#if EV_USE_INOTIFY
4056 4728
4057/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4729/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
4058# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4730# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
4059 4731
4060static void noinline 4732ecb_noinline
4733static void
4061infy_add (EV_P_ ev_stat *w) 4734infy_add (EV_P_ ev_stat *w)
4062{ 4735{
4063 w->wd = inotify_add_watch (fs_fd, w->path, 4736 w->wd = inotify_add_watch (fs_fd, w->path,
4064 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY 4737 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4065 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO 4738 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
… …
4129 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4802 if (ev_is_active (&w->timer)) ev_ref (EV_A);
4130 ev_timer_again (EV_A_ &w->timer); 4803 ev_timer_again (EV_A_ &w->timer);
4131 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4804 if (ev_is_active (&w->timer)) ev_unref (EV_A);
4132} 4805}
4133 4806
4134static void noinline 4807ecb_noinline
4808static void
4135infy_del (EV_P_ ev_stat *w) 4809infy_del (EV_P_ ev_stat *w)
4136{ 4810{
4137 int slot; 4811 int slot;
4138 int wd = w->wd; 4812 int wd = w->wd;
4139 4813
… …
4146 4820
4147 /* remove this watcher, if others are watching it, they will rearm */ 4821 /* remove this watcher, if others are watching it, they will rearm */
4148 inotify_rm_watch (fs_fd, wd); 4822 inotify_rm_watch (fs_fd, wd);
4149} 4823}
4150 4824
4151static void noinline 4825ecb_noinline
4826static void
4152infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4827infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
4153{ 4828{
4154 if (slot < 0) 4829 if (slot < 0)
4155 /* overflow, need to check for all hash slots */ 4830 /* overflow, need to check for all hash slots */
4156 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4831 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
4192 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4867 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4193 ofs += sizeof (struct inotify_event) + ev->len; 4868 ofs += sizeof (struct inotify_event) + ev->len;
4194 } 4869 }
4195} 4870}
4196 4871
4197inline_size void ecb_cold 4872inline_size ecb_cold
4873void
4198ev_check_2625 (EV_P) 4874ev_check_2625 (EV_P)
4199{ 4875{
4200 /* kernels < 2.6.25 are borked 4876 /* kernels < 2.6.25 are borked
4201 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4877 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
4202 */ 4878 */
… …
4292#else 4968#else
4293# define EV_LSTAT(p,b) lstat (p, b) 4969# define EV_LSTAT(p,b) lstat (p, b)
4294#endif 4970#endif
4295 4971
4296void 4972void
4297ev_stat_stat (EV_P_ ev_stat *w) EV_THROW 4973ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
4298{ 4974{
4299 if (lstat (w->path, &w->attr) < 0) 4975 if (lstat (w->path, &w->attr) < 0)
4300 w->attr.st_nlink = 0; 4976 w->attr.st_nlink = 0;
4301 else if (!w->attr.st_nlink) 4977 else if (!w->attr.st_nlink)
4302 w->attr.st_nlink = 1; 4978 w->attr.st_nlink = 1;
4303} 4979}
4304 4980
4305static void noinline 4981ecb_noinline
4982static void
4306stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4983stat_timer_cb (EV_P_ ev_timer *w_, int revents)
4307{ 4984{
4308 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4985 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
4309 4986
4310 ev_statdata prev = w->attr; 4987 ev_statdata prev = w->attr;
… …
4341 ev_feed_event (EV_A_ w, EV_STAT); 5018 ev_feed_event (EV_A_ w, EV_STAT);
4342 } 5019 }
4343} 5020}
4344 5021
4345void 5022void
4346ev_stat_start (EV_P_ ev_stat *w) EV_THROW 5023ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
4347{ 5024{
4348 if (expect_false (ev_is_active (w))) 5025 if (ecb_expect_false (ev_is_active (w)))
4349 return; 5026 return;
4350 5027
4351 ev_stat_stat (EV_A_ w); 5028 ev_stat_stat (EV_A_ w);
4352 5029
4353 if (w->interval < MIN_STAT_INTERVAL && w->interval) 5030 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
4372 5049
4373 EV_FREQUENT_CHECK; 5050 EV_FREQUENT_CHECK;
4374} 5051}
4375 5052
4376void 5053void
4377ev_stat_stop (EV_P_ ev_stat *w) EV_THROW 5054ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
4378{ 5055{
4379 clear_pending (EV_A_ (W)w); 5056 clear_pending (EV_A_ (W)w);
4380 if (expect_false (!ev_is_active (w))) 5057 if (ecb_expect_false (!ev_is_active (w)))
4381 return; 5058 return;
4382 5059
4383 EV_FREQUENT_CHECK; 5060 EV_FREQUENT_CHECK;
4384 5061
4385#if EV_USE_INOTIFY 5062#if EV_USE_INOTIFY
… …
4398} 5075}
4399#endif 5076#endif
4400 5077
4401#if EV_IDLE_ENABLE 5078#if EV_IDLE_ENABLE
4402void 5079void
4403ev_idle_start (EV_P_ ev_idle *w) EV_THROW 5080ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
4404{ 5081{
4405 if (expect_false (ev_is_active (w))) 5082 if (ecb_expect_false (ev_is_active (w)))
4406 return; 5083 return;
4407 5084
4408 pri_adjust (EV_A_ (W)w); 5085 pri_adjust (EV_A_ (W)w);
4409 5086
4410 EV_FREQUENT_CHECK; 5087 EV_FREQUENT_CHECK;
… …
4413 int active = ++idlecnt [ABSPRI (w)]; 5090 int active = ++idlecnt [ABSPRI (w)];
4414 5091
4415 ++idleall; 5092 ++idleall;
4416 ev_start (EV_A_ (W)w, active); 5093 ev_start (EV_A_ (W)w, active);
4417 5094
4418 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 5095 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
4419 idles [ABSPRI (w)][active - 1] = w; 5096 idles [ABSPRI (w)][active - 1] = w;
4420 } 5097 }
4421 5098
4422 EV_FREQUENT_CHECK; 5099 EV_FREQUENT_CHECK;
4423} 5100}
4424 5101
4425void 5102void
4426ev_idle_stop (EV_P_ ev_idle *w) EV_THROW 5103ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
4427{ 5104{
4428 clear_pending (EV_A_ (W)w); 5105 clear_pending (EV_A_ (W)w);
4429 if (expect_false (!ev_is_active (w))) 5106 if (ecb_expect_false (!ev_is_active (w)))
4430 return; 5107 return;
4431 5108
4432 EV_FREQUENT_CHECK; 5109 EV_FREQUENT_CHECK;
4433 5110
4434 { 5111 {
… …
4445} 5122}
4446#endif 5123#endif
4447 5124
4448#if EV_PREPARE_ENABLE 5125#if EV_PREPARE_ENABLE
4449void 5126void
4450ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW 5127ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
4451{ 5128{
4452 if (expect_false (ev_is_active (w))) 5129 if (ecb_expect_false (ev_is_active (w)))
4453 return; 5130 return;
4454 5131
4455 EV_FREQUENT_CHECK; 5132 EV_FREQUENT_CHECK;
4456 5133
4457 ev_start (EV_A_ (W)w, ++preparecnt); 5134 ev_start (EV_A_ (W)w, ++preparecnt);
4458 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 5135 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
4459 prepares [preparecnt - 1] = w; 5136 prepares [preparecnt - 1] = w;
4460 5137
4461 EV_FREQUENT_CHECK; 5138 EV_FREQUENT_CHECK;
4462} 5139}
4463 5140
4464void 5141void
4465ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW 5142ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
4466{ 5143{
4467 clear_pending (EV_A_ (W)w); 5144 clear_pending (EV_A_ (W)w);
4468 if (expect_false (!ev_is_active (w))) 5145 if (ecb_expect_false (!ev_is_active (w)))
4469 return; 5146 return;
4470 5147
4471 EV_FREQUENT_CHECK; 5148 EV_FREQUENT_CHECK;
4472 5149
4473 { 5150 {
… …
4483} 5160}
4484#endif 5161#endif
4485 5162
4486#if EV_CHECK_ENABLE 5163#if EV_CHECK_ENABLE
4487void 5164void
4488ev_check_start (EV_P_ ev_check *w) EV_THROW 5165ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
4489{ 5166{
4490 if (expect_false (ev_is_active (w))) 5167 if (ecb_expect_false (ev_is_active (w)))
4491 return; 5168 return;
4492 5169
4493 EV_FREQUENT_CHECK; 5170 EV_FREQUENT_CHECK;
4494 5171
4495 ev_start (EV_A_ (W)w, ++checkcnt); 5172 ev_start (EV_A_ (W)w, ++checkcnt);
4496 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 5173 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
4497 checks [checkcnt - 1] = w; 5174 checks [checkcnt - 1] = w;
4498 5175
4499 EV_FREQUENT_CHECK; 5176 EV_FREQUENT_CHECK;
4500} 5177}
4501 5178
4502void 5179void
4503ev_check_stop (EV_P_ ev_check *w) EV_THROW 5180ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
4504{ 5181{
4505 clear_pending (EV_A_ (W)w); 5182 clear_pending (EV_A_ (W)w);
4506 if (expect_false (!ev_is_active (w))) 5183 if (ecb_expect_false (!ev_is_active (w)))
4507 return; 5184 return;
4508 5185
4509 EV_FREQUENT_CHECK; 5186 EV_FREQUENT_CHECK;
4510 5187
4511 { 5188 {
… …
4520 EV_FREQUENT_CHECK; 5197 EV_FREQUENT_CHECK;
4521} 5198}
4522#endif 5199#endif
4523 5200
4524#if EV_EMBED_ENABLE 5201#if EV_EMBED_ENABLE
4525void noinline 5202ecb_noinline
5203void
4526ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW 5204ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
4527{ 5205{
4528 ev_run (w->other, EVRUN_NOWAIT); 5206 ev_run (w->other, EVRUN_NOWAIT);
4529} 5207}
4530 5208
4531static void 5209static void
… …
4553 ev_run (EV_A_ EVRUN_NOWAIT); 5231 ev_run (EV_A_ EVRUN_NOWAIT);
4554 } 5232 }
4555 } 5233 }
4556} 5234}
4557 5235
5236#if EV_FORK_ENABLE
4558static void 5237static void
4559embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 5238embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
4560{ 5239{
4561 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 5240 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
4562 5241
… …
4569 ev_run (EV_A_ EVRUN_NOWAIT); 5248 ev_run (EV_A_ EVRUN_NOWAIT);
4570 } 5249 }
4571 5250
4572 ev_embed_start (EV_A_ w); 5251 ev_embed_start (EV_A_ w);
4573} 5252}
5253#endif
4574 5254
4575#if 0 5255#if 0
4576static void 5256static void
4577embed_idle_cb (EV_P_ ev_idle *idle, int revents) 5257embed_idle_cb (EV_P_ ev_idle *idle, int revents)
4578{ 5258{
4579 ev_idle_stop (EV_A_ idle); 5259 ev_idle_stop (EV_A_ idle);
4580} 5260}
4581#endif 5261#endif
4582 5262
4583void 5263void
4584ev_embed_start (EV_P_ ev_embed *w) EV_THROW 5264ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
4585{ 5265{
4586 if (expect_false (ev_is_active (w))) 5266 if (ecb_expect_false (ev_is_active (w)))
4587 return; 5267 return;
4588 5268
4589 { 5269 {
4590 EV_P = w->other; 5270 EV_P = w->other;
4591 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 5271 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
… …
4599 5279
4600 ev_prepare_init (&w->prepare, embed_prepare_cb); 5280 ev_prepare_init (&w->prepare, embed_prepare_cb);
4601 ev_set_priority (&w->prepare, EV_MINPRI); 5281 ev_set_priority (&w->prepare, EV_MINPRI);
4602 ev_prepare_start (EV_A_ &w->prepare); 5282 ev_prepare_start (EV_A_ &w->prepare);
4603 5283
5284#if EV_FORK_ENABLE
4604 ev_fork_init (&w->fork, embed_fork_cb); 5285 ev_fork_init (&w->fork, embed_fork_cb);
4605 ev_fork_start (EV_A_ &w->fork); 5286 ev_fork_start (EV_A_ &w->fork);
5287#endif
4606 5288
4607 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 5289 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
4608 5290
4609 ev_start (EV_A_ (W)w, 1); 5291 ev_start (EV_A_ (W)w, 1);
4610 5292
4611 EV_FREQUENT_CHECK; 5293 EV_FREQUENT_CHECK;
4612} 5294}
4613 5295
4614void 5296void
4615ev_embed_stop (EV_P_ ev_embed *w) EV_THROW 5297ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
4616{ 5298{
4617 clear_pending (EV_A_ (W)w); 5299 clear_pending (EV_A_ (W)w);
4618 if (expect_false (!ev_is_active (w))) 5300 if (ecb_expect_false (!ev_is_active (w)))
4619 return; 5301 return;
4620 5302
4621 EV_FREQUENT_CHECK; 5303 EV_FREQUENT_CHECK;
4622 5304
4623 ev_io_stop (EV_A_ &w->io); 5305 ev_io_stop (EV_A_ &w->io);
4624 ev_prepare_stop (EV_A_ &w->prepare); 5306 ev_prepare_stop (EV_A_ &w->prepare);
5307#if EV_FORK_ENABLE
4625 ev_fork_stop (EV_A_ &w->fork); 5308 ev_fork_stop (EV_A_ &w->fork);
5309#endif
4626 5310
4627 ev_stop (EV_A_ (W)w); 5311 ev_stop (EV_A_ (W)w);
4628 5312
4629 EV_FREQUENT_CHECK; 5313 EV_FREQUENT_CHECK;
4630} 5314}
4631#endif 5315#endif
4632 5316
4633#if EV_FORK_ENABLE 5317#if EV_FORK_ENABLE
4634void 5318void
4635ev_fork_start (EV_P_ ev_fork *w) EV_THROW 5319ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
4636{ 5320{
4637 if (expect_false (ev_is_active (w))) 5321 if (ecb_expect_false (ev_is_active (w)))
4638 return; 5322 return;
4639 5323
4640 EV_FREQUENT_CHECK; 5324 EV_FREQUENT_CHECK;
4641 5325
4642 ev_start (EV_A_ (W)w, ++forkcnt); 5326 ev_start (EV_A_ (W)w, ++forkcnt);
4643 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5327 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
4644 forks [forkcnt - 1] = w; 5328 forks [forkcnt - 1] = w;
4645 5329
4646 EV_FREQUENT_CHECK; 5330 EV_FREQUENT_CHECK;
4647} 5331}
4648 5332
4649void 5333void
4650ev_fork_stop (EV_P_ ev_fork *w) EV_THROW 5334ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
4651{ 5335{
4652 clear_pending (EV_A_ (W)w); 5336 clear_pending (EV_A_ (W)w);
4653 if (expect_false (!ev_is_active (w))) 5337 if (ecb_expect_false (!ev_is_active (w)))
4654 return; 5338 return;
4655 5339
4656 EV_FREQUENT_CHECK; 5340 EV_FREQUENT_CHECK;
4657 5341
4658 { 5342 {
… …
4668} 5352}
4669#endif 5353#endif
4670 5354
4671#if EV_CLEANUP_ENABLE 5355#if EV_CLEANUP_ENABLE
4672void 5356void
4673ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW 5357ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4674{ 5358{
4675 if (expect_false (ev_is_active (w))) 5359 if (ecb_expect_false (ev_is_active (w)))
4676 return; 5360 return;
4677 5361
4678 EV_FREQUENT_CHECK; 5362 EV_FREQUENT_CHECK;
4679 5363
4680 ev_start (EV_A_ (W)w, ++cleanupcnt); 5364 ev_start (EV_A_ (W)w, ++cleanupcnt);
4681 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 5365 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
4682 cleanups [cleanupcnt - 1] = w; 5366 cleanups [cleanupcnt - 1] = w;
4683 5367
4684 /* cleanup watchers should never keep a refcount on the loop */ 5368 /* cleanup watchers should never keep a refcount on the loop */
4685 ev_unref (EV_A); 5369 ev_unref (EV_A);
4686 EV_FREQUENT_CHECK; 5370 EV_FREQUENT_CHECK;
4687} 5371}
4688 5372
4689void 5373void
4690ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW 5374ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4691{ 5375{
4692 clear_pending (EV_A_ (W)w); 5376 clear_pending (EV_A_ (W)w);
4693 if (expect_false (!ev_is_active (w))) 5377 if (ecb_expect_false (!ev_is_active (w)))
4694 return; 5378 return;
4695 5379
4696 EV_FREQUENT_CHECK; 5380 EV_FREQUENT_CHECK;
4697 ev_ref (EV_A); 5381 ev_ref (EV_A);
4698 5382
… …
4709} 5393}
4710#endif 5394#endif
4711 5395
4712#if EV_ASYNC_ENABLE 5396#if EV_ASYNC_ENABLE
4713void 5397void
4714ev_async_start (EV_P_ ev_async *w) EV_THROW 5398ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4715{ 5399{
4716 if (expect_false (ev_is_active (w))) 5400 if (ecb_expect_false (ev_is_active (w)))
4717 return; 5401 return;
4718 5402
4719 w->sent = 0; 5403 w->sent = 0;
4720 5404
4721 evpipe_init (EV_A); 5405 evpipe_init (EV_A);
4722 5406
4723 EV_FREQUENT_CHECK; 5407 EV_FREQUENT_CHECK;
4724 5408
4725 ev_start (EV_A_ (W)w, ++asynccnt); 5409 ev_start (EV_A_ (W)w, ++asynccnt);
4726 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5410 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
4727 asyncs [asynccnt - 1] = w; 5411 asyncs [asynccnt - 1] = w;
4728 5412
4729 EV_FREQUENT_CHECK; 5413 EV_FREQUENT_CHECK;
4730} 5414}
4731 5415
4732void 5416void
4733ev_async_stop (EV_P_ ev_async *w) EV_THROW 5417ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4734{ 5418{
4735 clear_pending (EV_A_ (W)w); 5419 clear_pending (EV_A_ (W)w);
4736 if (expect_false (!ev_is_active (w))) 5420 if (ecb_expect_false (!ev_is_active (w)))
4737 return; 5421 return;
4738 5422
4739 EV_FREQUENT_CHECK; 5423 EV_FREQUENT_CHECK;
4740 5424
4741 { 5425 {
… …
4749 5433
4750 EV_FREQUENT_CHECK; 5434 EV_FREQUENT_CHECK;
4751} 5435}
4752 5436
4753void 5437void
4754ev_async_send (EV_P_ ev_async *w) EV_THROW 5438ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
4755{ 5439{
4756 w->sent = 1; 5440 w->sent = 1;
4757 evpipe_write (EV_A_ &async_pending); 5441 evpipe_write (EV_A_ &async_pending);
4758} 5442}
4759#endif 5443#endif
… …
4796 5480
4797 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5481 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
4798} 5482}
4799 5483
4800void 5484void
4801ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW 5485ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
4802{ 5486{
4803 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5487 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
4804
4805 if (expect_false (!once))
4806 {
4807 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
4808 return;
4809 }
4810 5488
4811 once->cb = cb; 5489 once->cb = cb;
4812 once->arg = arg; 5490 once->arg = arg;
4813 5491
4814 ev_init (&once->io, once_cb_io); 5492 ev_init (&once->io, once_cb_io);
… …
4827} 5505}
4828 5506
4829/*****************************************************************************/ 5507/*****************************************************************************/
4830 5508
4831#if EV_WALK_ENABLE 5509#if EV_WALK_ENABLE
4832void ecb_cold 5510ecb_cold
5511void
4833ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW 5512ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
4834{ 5513{
4835 int i, j; 5514 int i, j;
4836 ev_watcher_list *wl, *wn; 5515 ev_watcher_list *wl, *wn;
4837 5516
4838 if (types & (EV_IO | EV_EMBED)) 5517 if (types & (EV_IO | EV_EMBED))

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