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Comparing libev/ev.c (file contents):
Revision 1.479 by root, Sun Dec 20 01:31:17 2015 UTC vs.
Revision 1.527 by root, Wed Jan 22 22:38:19 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 0x00010005 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
… …
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)
573 696
697#ifndef ECB_OPTIMIZE_SIZE
698 #if __OPTIMIZE_SIZE__
699 #define ECB_OPTIMIZE_SIZE 1
700 #else
701 #define ECB_OPTIMIZE_SIZE 0
702 #endif
703#endif
704
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
578 #else 709 #else
… …
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 }
… …
653 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */ 787 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
654#endif 788#endif
655 789
656#ifndef ECB_MEMORY_FENCE 790#ifndef ECB_MEMORY_FENCE
657 #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")
658 #if __i386 || __i386__ 793 #if __i386 || __i386__
659 #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")
660 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") 795 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
661 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 796 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
662 #elif ECB_GCC_AMD64 797 #elif ECB_GCC_AMD64
663 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 798 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
664 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") 799 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
665 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 800 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
666 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 801 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
667 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 802 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
668 #elif defined __ARM_ARCH_2__ \ 803 #elif defined __ARM_ARCH_2__ \
669 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \ 804 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
670 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \ 805 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
… …
712 #if ECB_GCC_VERSION(4,7) 847 #if ECB_GCC_VERSION(4,7)
713 /* see comment below (stdatomic.h) about the C11 memory model. */ 848 /* see comment below (stdatomic.h) about the C11 memory model. */
714 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST) 849 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
715 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE) 850 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
716 #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)
717 853
718 #elif ECB_CLANG_EXTENSION(c_atomic) 854 #elif ECB_CLANG_EXTENSION(c_atomic)
719 /* see comment below (stdatomic.h) about the C11 memory model. */ 855 /* see comment below (stdatomic.h) about the C11 memory model. */
720 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) 856 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
721 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE) 857 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
722 #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)
723 860
724 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ 861 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
725 #define ECB_MEMORY_FENCE __sync_synchronize () 862 #define ECB_MEMORY_FENCE __sync_synchronize ()
726 #elif _MSC_VER >= 1500 /* VC++ 2008 */ 863 #elif _MSC_VER >= 1500 /* VC++ 2008 */
727 /* 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... */
… …
737 #elif defined _WIN32 874 #elif defined _WIN32
738 #include <WinNT.h> 875 #include <WinNT.h>
739 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ 876 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
740 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 877 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
741 #include <mbarrier.h> 878 #include <mbarrier.h>
742 #define ECB_MEMORY_FENCE __machine_rw_barrier () 879 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
743 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier () 880 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
744 #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 ()
745 #elif __xlC__ 883 #elif __xlC__
746 #define ECB_MEMORY_FENCE __sync () 884 #define ECB_MEMORY_FENCE __sync ()
747 #endif 885 #endif
748#endif 886#endif
749 887
750#ifndef ECB_MEMORY_FENCE 888#ifndef ECB_MEMORY_FENCE
751 #if ECB_C11 && !defined __STDC_NO_ATOMICS__ 889 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
752 /* 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, */
753 /* not just C11 atomics and atomic accesses */ 891 /* not just C11 atomics and atomic accesses */
754 #include <stdatomic.h> 892 #include <stdatomic.h>
755 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
756 /* any fence other than seq_cst, which isn't very efficient for us. */
757 /* Why that is, we don't know - either the C11 memory model is quite useless */
758 /* for most usages, or gcc and clang have a bug */
759 /* I *currently* lean towards the latter, and inefficiently implement */
760 /* all three of ecb's fences as a seq_cst fence */
761 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
762 /* for all __atomic_thread_fence's except seq_cst */
763 #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)
764 #endif 896 #endif
765#endif 897#endif
766 898
767#ifndef ECB_MEMORY_FENCE 899#ifndef ECB_MEMORY_FENCE
768 #if !ECB_AVOID_PTHREADS 900 #if !ECB_AVOID_PTHREADS
… …
786 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 918 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
787#endif 919#endif
788 920
789#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE 921#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
790 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 922 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
923#endif
924
925#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
926 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
791#endif 927#endif
792 928
793/*****************************************************************************/ 929/*****************************************************************************/
794 930
795#if ECB_CPP 931#if ECB_CPP
… …
1079ecb_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); }
1080ecb_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); }
1081ecb_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); }
1082ecb_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); }
1083 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
1084#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))
1085 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16) 1259 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1086 #define ecb_bswap16(x) __builtin_bswap16 (x) 1260 #define ecb_bswap16(x) __builtin_bswap16 (x)
1087 #else 1261 #else
1088 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 1262 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
… …
1159ecb_inline ecb_const ecb_bool ecb_big_endian (void); 1333ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1160ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; } 1334ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1161ecb_inline ecb_const ecb_bool ecb_little_endian (void); 1335ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1162ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; } 1336ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1163 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/*****************************************************************************/
1409
1164#if ECB_GCC_VERSION(3,0) || ECB_C99 1410#if ECB_GCC_VERSION(3,0) || ECB_C99
1165 #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))
1166#else 1412#else
1167 #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)))
1168#endif 1414#endif
… …
1191 return N; 1437 return N;
1192 } 1438 }
1193#else 1439#else
1194 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1440 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1195#endif 1441#endif
1442
1443/*****************************************************************************/
1196 1444
1197ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x); 1445ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1198ecb_function_ ecb_const uint32_t 1446ecb_function_ ecb_const uint32_t
1199ecb_binary16_to_binary32 (uint32_t x) 1447ecb_binary16_to_binary32 (uint32_t x)
1200{ 1448{
… …
1309 || defined __sh__ \ 1557 || defined __sh__ \
1310 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \ 1558 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1311 || (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__)) \
1312 || defined __aarch64__ 1560 || defined __aarch64__
1313 #define ECB_STDFP 1 1561 #define ECB_STDFP 1
1314 #include <string.h> /* for memcpy */
1315#else 1562#else
1316 #define ECB_STDFP 0 1563 #define ECB_STDFP 0
1317#endif 1564#endif
1318 1565
1319#ifndef ECB_NO_LIBM 1566#ifndef ECB_NO_LIBM
… …
1504/* ECB.H END */ 1751/* ECB.H END */
1505 1752
1506#if ECB_MEMORY_FENCE_NEEDS_PTHREADS 1753#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1507/* 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
1508 * 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
1509 * 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
1510 * libev, in which cases the memory fences become nops. 1757 * libev, in which cases the memory fences become nops.
1511 * alternatively, you can remove this #error and link against libpthread, 1758 * alternatively, you can remove this #error and link against libpthread,
1512 * which will then provide the memory fences. 1759 * which will then provide the memory fences.
1513 */ 1760 */
1514# error "memory fences not defined for your architecture, please report" 1761# error "memory fences not defined for your architecture, please report"
… …
1518# define ECB_MEMORY_FENCE do { } while (0) 1765# define ECB_MEMORY_FENCE do { } while (0)
1519# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 1766# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1520# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 1767# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1521#endif 1768#endif
1522 1769
1523#define expect_false(cond) ecb_expect_false (cond)
1524#define expect_true(cond) ecb_expect_true (cond)
1525#define noinline ecb_noinline
1526
1527#define inline_size ecb_inline 1770#define inline_size ecb_inline
1528 1771
1529#if EV_FEATURE_CODE 1772#if EV_FEATURE_CODE
1530# define inline_speed ecb_inline 1773# define inline_speed ecb_inline
1531#else 1774#else
1532# define inline_speed static noinline 1775# define inline_speed ecb_noinline static
1533#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/*****************************************************************************/
1534 1843
1535#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1844#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
1536 1845
1537#if EV_MINPRI == EV_MAXPRI 1846#if EV_MINPRI == EV_MAXPRI
1538# define ABSPRI(w) (((W)w), 0) 1847# define ABSPRI(w) (((W)w), 0)
1539#else 1848#else
1540# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1849# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
1541#endif 1850#endif
1542 1851
1543#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1852#define EMPTY /* required for microsofts broken pseudo-c compiler */
1544#define EMPTY2(a,b) /* used to suppress some warnings */
1545 1853
1546typedef ev_watcher *W; 1854typedef ev_watcher *W;
1547typedef ev_watcher_list *WL; 1855typedef ev_watcher_list *WL;
1548typedef ev_watcher_time *WT; 1856typedef ev_watcher_time *WT;
1549 1857
… …
1574# include "ev_win32.c" 1882# include "ev_win32.c"
1575#endif 1883#endif
1576 1884
1577/*****************************************************************************/ 1885/*****************************************************************************/
1578 1886
1887#if EV_USE_LINUXAIO
1888# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1889#endif
1890
1579/* define a suitable floor function (only used by periodics atm) */ 1891/* define a suitable floor function (only used by periodics atm) */
1580 1892
1581#if EV_USE_FLOOR 1893#if EV_USE_FLOOR
1582# include <math.h> 1894# include <math.h>
1583# define ev_floor(v) floor (v) 1895# define ev_floor(v) floor (v)
1584#else 1896#else
1585 1897
1586#include <float.h> 1898#include <float.h>
1587 1899
1588/* 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
1589static ev_tstamp noinline 1902static ev_tstamp
1590ev_floor (ev_tstamp v) 1903ev_floor (ev_tstamp v)
1591{ 1904{
1592 /* the choice of shift factor is not terribly important */ 1905 /* the choice of shift factor is not terribly important */
1593#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1906#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1594 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1907 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1595#else 1908#else
1596 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; 1909 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1597#endif 1910#endif
1598 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
1599 /* argument too large for an unsigned long? */ 1920 /* argument too large for an unsigned long? then reduce it */
1600 if (expect_false (v >= shift)) 1921 if (ecb_expect_false (v >= shift))
1601 { 1922 {
1602 ev_tstamp f; 1923 ev_tstamp f;
1603 1924
1604 if (v == v - 1.) 1925 if (v == v - 1.)
1605 return v; /* very large number */ 1926 return v; /* very large numbers are assumed to be integer */
1606 1927
1607 f = shift * ev_floor (v * (1. / shift)); 1928 f = shift * ev_floor (v * (1. / shift));
1608 return f + ev_floor (v - f); 1929 return f + ev_floor (v - f);
1609 } 1930 }
1610 1931
1611 /* special treatment for negative args? */
1612 if (expect_false (v < 0.))
1613 {
1614 ev_tstamp f = -ev_floor (-v);
1615
1616 return f - (f == v ? 0 : 1);
1617 }
1618
1619 /* fits into an unsigned long */ 1932 /* fits into an unsigned long */
1620 return (unsigned long)v; 1933 return (unsigned long)v;
1621} 1934}
1622 1935
1623#endif 1936#endif
… …
1626 1939
1627#ifdef __linux 1940#ifdef __linux
1628# include <sys/utsname.h> 1941# include <sys/utsname.h>
1629#endif 1942#endif
1630 1943
1631static unsigned int noinline ecb_cold 1944ecb_noinline ecb_cold
1945static unsigned int
1632ev_linux_version (void) 1946ev_linux_version (void)
1633{ 1947{
1634#ifdef __linux 1948#ifdef __linux
1635 unsigned int v = 0; 1949 unsigned int v = 0;
1636 struct utsname buf; 1950 struct utsname buf;
… …
1665} 1979}
1666 1980
1667/*****************************************************************************/ 1981/*****************************************************************************/
1668 1982
1669#if EV_AVOID_STDIO 1983#if EV_AVOID_STDIO
1670static void noinline ecb_cold 1984ecb_noinline ecb_cold
1985static void
1671ev_printerr (const char *msg) 1986ev_printerr (const char *msg)
1672{ 1987{
1673 write (STDERR_FILENO, msg, strlen (msg)); 1988 write (STDERR_FILENO, msg, strlen (msg));
1674} 1989}
1675#endif 1990#endif
1676 1991
1677static void (*syserr_cb)(const char *msg) EV_THROW; 1992static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
1678 1993
1679void ecb_cold 1994ecb_cold
1995void
1680ev_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
1681{ 1997{
1682 syserr_cb = cb; 1998 syserr_cb = cb;
1683} 1999}
1684 2000
1685static void noinline ecb_cold 2001ecb_noinline ecb_cold
2002static void
1686ev_syserr (const char *msg) 2003ev_syserr (const char *msg)
1687{ 2004{
1688 if (!msg) 2005 if (!msg)
1689 msg = "(libev) system error"; 2006 msg = "(libev) system error";
1690 2007
… …
1703 abort (); 2020 abort ();
1704 } 2021 }
1705} 2022}
1706 2023
1707static void * 2024static void *
1708ev_realloc_emul (void *ptr, long size) EV_THROW 2025ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
1709{ 2026{
1710 /* some systems, notably openbsd and darwin, fail to properly 2027 /* some systems, notably openbsd and darwin, fail to properly
1711 * 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
1712 * the single unix specification, so work around them here. 2029 * the single unix specification, so work around them here.
1713 * recently, also (at least) fedora and debian started breaking it, 2030 * recently, also (at least) fedora and debian started breaking it,
… …
1719 2036
1720 free (ptr); 2037 free (ptr);
1721 return 0; 2038 return 0;
1722} 2039}
1723 2040
1724static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul; 2041static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
1725 2042
1726void ecb_cold 2043ecb_cold
2044void
1727ev_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
1728{ 2046{
1729 alloc = cb; 2047 alloc = cb;
1730} 2048}
1731 2049
1732inline_speed void * 2050inline_speed void *
… …
1759typedef struct 2077typedef struct
1760{ 2078{
1761 WL head; 2079 WL head;
1762 unsigned char events; /* the events watched for */ 2080 unsigned char events; /* the events watched for */
1763 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) */
1764 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 */
1765 unsigned char unused; 2083 unsigned char eflags; /* flags field for use by backends */
1766#if EV_USE_EPOLL 2084#if EV_USE_EPOLL
1767 unsigned int egen; /* generation counter to counter epoll bugs */ 2085 unsigned int egen; /* generation counter to counter epoll bugs */
1768#endif 2086#endif
1769#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 2087#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1770 SOCKET handle; 2088 SOCKET handle;
… …
1824 static struct ev_loop default_loop_struct; 2142 static struct ev_loop default_loop_struct;
1825 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 */
1826 2144
1827#else 2145#else
1828 2146
1829 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 */
1830 #define VAR(name,decl) static decl; 2148 #define VAR(name,decl) static decl;
1831 #include "ev_vars.h" 2149 #include "ev_vars.h"
1832 #undef VAR 2150 #undef VAR
1833 2151
1834 static int ev_default_loop_ptr; 2152 static int ev_default_loop_ptr;
1835 2153
1836#endif 2154#endif
1837 2155
1838#if EV_FEATURE_API 2156#if EV_FEATURE_API
1839# 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)
1840# 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)
1841# define EV_INVOKE_PENDING invoke_cb (EV_A) 2159# define EV_INVOKE_PENDING invoke_cb (EV_A)
1842#else 2160#else
1843# define EV_RELEASE_CB (void)0 2161# define EV_RELEASE_CB (void)0
1844# define EV_ACQUIRE_CB (void)0 2162# define EV_ACQUIRE_CB (void)0
1845# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 2163# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
… …
1849 2167
1850/*****************************************************************************/ 2168/*****************************************************************************/
1851 2169
1852#ifndef EV_HAVE_EV_TIME 2170#ifndef EV_HAVE_EV_TIME
1853ev_tstamp 2171ev_tstamp
1854ev_time (void) EV_THROW 2172ev_time (void) EV_NOEXCEPT
1855{ 2173{
1856#if EV_USE_REALTIME 2174#if EV_USE_REALTIME
1857 if (expect_true (have_realtime)) 2175 if (ecb_expect_true (have_realtime))
1858 { 2176 {
1859 struct timespec ts; 2177 struct timespec ts;
1860 clock_gettime (CLOCK_REALTIME, &ts); 2178 clock_gettime (CLOCK_REALTIME, &ts);
1861 return ts.tv_sec + ts.tv_nsec * 1e-9; 2179 return EV_TS_GET (ts);
1862 } 2180 }
1863#endif 2181#endif
1864 2182
2183 {
1865 struct timeval tv; 2184 struct timeval tv;
1866 gettimeofday (&tv, 0); 2185 gettimeofday (&tv, 0);
1867 return tv.tv_sec + tv.tv_usec * 1e-6; 2186 return EV_TV_GET (tv);
2187 }
1868} 2188}
1869#endif 2189#endif
1870 2190
1871inline_size ev_tstamp 2191inline_size ev_tstamp
1872get_clock (void) 2192get_clock (void)
1873{ 2193{
1874#if EV_USE_MONOTONIC 2194#if EV_USE_MONOTONIC
1875 if (expect_true (have_monotonic)) 2195 if (ecb_expect_true (have_monotonic))
1876 { 2196 {
1877 struct timespec ts; 2197 struct timespec ts;
1878 clock_gettime (CLOCK_MONOTONIC, &ts); 2198 clock_gettime (CLOCK_MONOTONIC, &ts);
1879 return ts.tv_sec + ts.tv_nsec * 1e-9; 2199 return EV_TS_GET (ts);
1880 } 2200 }
1881#endif 2201#endif
1882 2202
1883 return ev_time (); 2203 return ev_time ();
1884} 2204}
1885 2205
1886#if EV_MULTIPLICITY 2206#if EV_MULTIPLICITY
1887ev_tstamp 2207ev_tstamp
1888ev_now (EV_P) EV_THROW 2208ev_now (EV_P) EV_NOEXCEPT
1889{ 2209{
1890 return ev_rt_now; 2210 return ev_rt_now;
1891} 2211}
1892#endif 2212#endif
1893 2213
1894void 2214void
1895ev_sleep (ev_tstamp delay) EV_THROW 2215ev_sleep (ev_tstamp delay) EV_NOEXCEPT
1896{ 2216{
1897 if (delay > 0.) 2217 if (delay > EV_TS_CONST (0.))
1898 { 2218 {
1899#if EV_USE_NANOSLEEP 2219#if EV_USE_NANOSLEEP
1900 struct timespec ts; 2220 struct timespec ts;
1901 2221
1902 EV_TS_SET (ts, delay); 2222 EV_TS_SET (ts, delay);
1903 nanosleep (&ts, 0); 2223 nanosleep (&ts, 0);
1904#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) */
1905 Sleep ((unsigned long)(delay * 1e3)); 2227 Sleep ((unsigned long)(EV_TS_TO_MSEC (delay)));
1906#else 2228#else
1907 struct timeval tv; 2229 struct timeval tv;
1908 2230
1909 /* 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 */
1910 /* something not guaranteed by newer posix versions, but guaranteed */ 2232 /* something not guaranteed by newer posix versions, but guaranteed */
… …
1940 } 2262 }
1941 2263
1942 return ncur; 2264 return ncur;
1943} 2265}
1944 2266
1945static void * noinline ecb_cold 2267ecb_noinline ecb_cold
2268static void *
1946array_realloc (int elem, void *base, int *cur, int cnt) 2269array_realloc (int elem, void *base, int *cur, int cnt)
1947{ 2270{
1948 *cur = array_nextsize (elem, *cur, cnt); 2271 *cur = array_nextsize (elem, *cur, cnt);
1949 return ev_realloc (base, elem * *cur); 2272 return ev_realloc (base, elem * *cur);
1950} 2273}
1951 2274
2275#define array_needsize_noinit(base,offset,count)
2276
1952#define array_init_zero(base,count) \ 2277#define array_needsize_zerofill(base,offset,count) \
1953 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2278 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
1954 2279
1955#define array_needsize(type,base,cur,cnt,init) \ 2280#define array_needsize(type,base,cur,cnt,init) \
1956 if (expect_false ((cnt) > (cur))) \ 2281 if (ecb_expect_false ((cnt) > (cur))) \
1957 { \ 2282 { \
1958 int ecb_unused ocur_ = (cur); \ 2283 ecb_unused int ocur_ = (cur); \
1959 (base) = (type *)array_realloc \ 2284 (base) = (type *)array_realloc \
1960 (sizeof (type), (base), &(cur), (cnt)); \ 2285 (sizeof (type), (base), &(cur), (cnt)); \
1961 init ((base) + (ocur_), (cur) - ocur_); \ 2286 init ((base), ocur_, ((cur) - ocur_)); \
1962 } 2287 }
1963 2288
1964#if 0 2289#if 0
1965#define array_slim(type,stem) \ 2290#define array_slim(type,stem) \
1966 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2291 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
1975 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
1976 2301
1977/*****************************************************************************/ 2302/*****************************************************************************/
1978 2303
1979/* dummy callback for pending events */ 2304/* dummy callback for pending events */
1980static void noinline 2305ecb_noinline
2306static void
1981pendingcb (EV_P_ ev_prepare *w, int revents) 2307pendingcb (EV_P_ ev_prepare *w, int revents)
1982{ 2308{
1983} 2309}
1984 2310
1985void noinline 2311ecb_noinline
2312void
1986ev_feed_event (EV_P_ void *w, int revents) EV_THROW 2313ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
1987{ 2314{
1988 W w_ = (W)w; 2315 W w_ = (W)w;
1989 int pri = ABSPRI (w_); 2316 int pri = ABSPRI (w_);
1990 2317
1991 if (expect_false (w_->pending)) 2318 if (ecb_expect_false (w_->pending))
1992 pendings [pri][w_->pending - 1].events |= revents; 2319 pendings [pri][w_->pending - 1].events |= revents;
1993 else 2320 else
1994 { 2321 {
1995 w_->pending = ++pendingcnt [pri]; 2322 w_->pending = ++pendingcnt [pri];
1996 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2323 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
1997 pendings [pri][w_->pending - 1].w = w_; 2324 pendings [pri][w_->pending - 1].w = w_;
1998 pendings [pri][w_->pending - 1].events = revents; 2325 pendings [pri][w_->pending - 1].events = revents;
1999 } 2326 }
2000 2327
2001 pendingpri = NUMPRI - 1; 2328 pendingpri = NUMPRI - 1;
2002} 2329}
2003 2330
2004inline_speed void 2331inline_speed void
2005feed_reverse (EV_P_ W w) 2332feed_reverse (EV_P_ W w)
2006{ 2333{
2007 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2334 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
2008 rfeeds [rfeedcnt++] = w; 2335 rfeeds [rfeedcnt++] = w;
2009} 2336}
2010 2337
2011inline_size void 2338inline_size void
2012feed_reverse_done (EV_P_ int revents) 2339feed_reverse_done (EV_P_ int revents)
… …
2047inline_speed void 2374inline_speed void
2048fd_event (EV_P_ int fd, int revents) 2375fd_event (EV_P_ int fd, int revents)
2049{ 2376{
2050 ANFD *anfd = anfds + fd; 2377 ANFD *anfd = anfds + fd;
2051 2378
2052 if (expect_true (!anfd->reify)) 2379 if (ecb_expect_true (!anfd->reify))
2053 fd_event_nocheck (EV_A_ fd, revents); 2380 fd_event_nocheck (EV_A_ fd, revents);
2054} 2381}
2055 2382
2056void 2383void
2057ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW 2384ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
2058{ 2385{
2059 if (fd >= 0 && fd < anfdmax) 2386 if (fd >= 0 && fd < anfdmax)
2060 fd_event_nocheck (EV_A_ fd, revents); 2387 fd_event_nocheck (EV_A_ fd, revents);
2061} 2388}
2062 2389
… …
2065inline_size void 2392inline_size void
2066fd_reify (EV_P) 2393fd_reify (EV_P)
2067{ 2394{
2068 int i; 2395 int i;
2069 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
2070#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 2409#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
2071 for (i = 0; i < fdchangecnt; ++i) 2410 for (i = 0; i < changecnt; ++i)
2072 { 2411 {
2073 int fd = fdchanges [i]; 2412 int fd = fdchanges [i];
2074 ANFD *anfd = anfds + fd; 2413 ANFD *anfd = anfds + fd;
2075 2414
2076 if (anfd->reify & EV__IOFDSET && anfd->head) 2415 if (anfd->reify & EV__IOFDSET && anfd->head)
… …
2090 } 2429 }
2091 } 2430 }
2092 } 2431 }
2093#endif 2432#endif
2094 2433
2095 for (i = 0; i < fdchangecnt; ++i) 2434 for (i = 0; i < changecnt; ++i)
2096 { 2435 {
2097 int fd = fdchanges [i]; 2436 int fd = fdchanges [i];
2098 ANFD *anfd = anfds + fd; 2437 ANFD *anfd = anfds + fd;
2099 ev_io *w; 2438 ev_io *w;
2100 2439
2101 unsigned char o_events = anfd->events; 2440 unsigned char o_events = anfd->events;
2102 unsigned char o_reify = anfd->reify; 2441 unsigned char o_reify = anfd->reify;
2103 2442
2104 anfd->reify = 0; 2443 anfd->reify = 0;
2105 2444
2106 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 2445 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
2107 { 2446 {
2108 anfd->events = 0; 2447 anfd->events = 0;
2109 2448
2110 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)
2111 anfd->events |= (unsigned char)w->events; 2450 anfd->events |= (unsigned char)w->events;
… …
2116 2455
2117 if (o_reify & EV__IOFDSET) 2456 if (o_reify & EV__IOFDSET)
2118 backend_modify (EV_A_ fd, o_events, anfd->events); 2457 backend_modify (EV_A_ fd, o_events, anfd->events);
2119 } 2458 }
2120 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
2121 fdchangecnt = 0; 2467 fdchangecnt -= changecnt;
2122} 2468}
2123 2469
2124/* something about the given fd changed */ 2470/* something about the given fd changed */
2125inline_size void 2471inline_size
2472void
2126fd_change (EV_P_ int fd, int flags) 2473fd_change (EV_P_ int fd, int flags)
2127{ 2474{
2128 unsigned char reify = anfds [fd].reify; 2475 unsigned char reify = anfds [fd].reify;
2129 anfds [fd].reify |= flags; 2476 anfds [fd].reify = reify | flags;
2130 2477
2131 if (expect_true (!reify)) 2478 if (ecb_expect_true (!reify))
2132 { 2479 {
2133 ++fdchangecnt; 2480 ++fdchangecnt;
2134 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2481 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
2135 fdchanges [fdchangecnt - 1] = fd; 2482 fdchanges [fdchangecnt - 1] = fd;
2136 } 2483 }
2137} 2484}
2138 2485
2139/* 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 */
2140inline_speed void ecb_cold 2487inline_speed ecb_cold void
2141fd_kill (EV_P_ int fd) 2488fd_kill (EV_P_ int fd)
2142{ 2489{
2143 ev_io *w; 2490 ev_io *w;
2144 2491
2145 while ((w = (ev_io *)anfds [fd].head)) 2492 while ((w = (ev_io *)anfds [fd].head))
… …
2148 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);
2149 } 2496 }
2150} 2497}
2151 2498
2152/* check whether the given fd is actually valid, for error recovery */ 2499/* check whether the given fd is actually valid, for error recovery */
2153inline_size int ecb_cold 2500inline_size ecb_cold int
2154fd_valid (int fd) 2501fd_valid (int fd)
2155{ 2502{
2156#ifdef _WIN32 2503#ifdef _WIN32
2157 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2504 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
2158#else 2505#else
2159 return fcntl (fd, F_GETFD) != -1; 2506 return fcntl (fd, F_GETFD) != -1;
2160#endif 2507#endif
2161} 2508}
2162 2509
2163/* called on EBADF to verify fds */ 2510/* called on EBADF to verify fds */
2164static void noinline ecb_cold 2511ecb_noinline ecb_cold
2512static void
2165fd_ebadf (EV_P) 2513fd_ebadf (EV_P)
2166{ 2514{
2167 int fd; 2515 int fd;
2168 2516
2169 for (fd = 0; fd < anfdmax; ++fd) 2517 for (fd = 0; fd < anfdmax; ++fd)
… …
2171 if (!fd_valid (fd) && errno == EBADF) 2519 if (!fd_valid (fd) && errno == EBADF)
2172 fd_kill (EV_A_ fd); 2520 fd_kill (EV_A_ fd);
2173} 2521}
2174 2522
2175/* 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 */
2176static void noinline ecb_cold 2524ecb_noinline ecb_cold
2525static void
2177fd_enomem (EV_P) 2526fd_enomem (EV_P)
2178{ 2527{
2179 int fd; 2528 int fd;
2180 2529
2181 for (fd = anfdmax; fd--; ) 2530 for (fd = anfdmax; fd--; )
… …
2185 break; 2534 break;
2186 } 2535 }
2187} 2536}
2188 2537
2189/* 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 */
2190static void noinline 2539ecb_noinline
2540static void
2191fd_rearm_all (EV_P) 2541fd_rearm_all (EV_P)
2192{ 2542{
2193 int fd; 2543 int fd;
2194 2544
2195 for (fd = 0; fd < anfdmax; ++fd) 2545 for (fd = 0; fd < anfdmax; ++fd)
… …
2248 ev_tstamp minat; 2598 ev_tstamp minat;
2249 ANHE *minpos; 2599 ANHE *minpos;
2250 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2600 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
2251 2601
2252 /* find minimum child */ 2602 /* find minimum child */
2253 if (expect_true (pos + DHEAP - 1 < E)) 2603 if (ecb_expect_true (pos + DHEAP - 1 < E))
2254 { 2604 {
2255 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2605 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
2256 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));
2257 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));
2258 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));
2259 } 2609 }
2260 else if (pos < E) 2610 else if (pos < E)
2261 { 2611 {
2262 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2612 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
2263 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));
2264 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));
2265 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));
2266 } 2616 }
2267 else 2617 else
2268 break; 2618 break;
2269 2619
2270 if (ANHE_at (he) <= minat) 2620 if (ANHE_at (he) <= minat)
… …
2278 2628
2279 heap [k] = he; 2629 heap [k] = he;
2280 ev_active (ANHE_w (he)) = k; 2630 ev_active (ANHE_w (he)) = k;
2281} 2631}
2282 2632
2283#else /* 4HEAP */ 2633#else /* not 4HEAP */
2284 2634
2285#define HEAP0 1 2635#define HEAP0 1
2286#define HPARENT(k) ((k) >> 1) 2636#define HPARENT(k) ((k) >> 1)
2287#define UPHEAP_DONE(p,k) (!(p)) 2637#define UPHEAP_DONE(p,k) (!(p))
2288 2638
… …
2360 upheap (heap, i + HEAP0); 2710 upheap (heap, i + HEAP0);
2361} 2711}
2362 2712
2363/*****************************************************************************/ 2713/*****************************************************************************/
2364 2714
2365/* associate signal watchers to a signal signal */ 2715/* associate signal watchers to a signal */
2366typedef struct 2716typedef struct
2367{ 2717{
2368 EV_ATOMIC_T pending; 2718 EV_ATOMIC_T pending;
2369#if EV_MULTIPLICITY 2719#if EV_MULTIPLICITY
2370 EV_P; 2720 EV_P;
… …
2376 2726
2377/*****************************************************************************/ 2727/*****************************************************************************/
2378 2728
2379#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2729#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2380 2730
2381static void noinline ecb_cold 2731ecb_noinline ecb_cold
2732static void
2382evpipe_init (EV_P) 2733evpipe_init (EV_P)
2383{ 2734{
2384 if (!ev_is_active (&pipe_w)) 2735 if (!ev_is_active (&pipe_w))
2385 { 2736 {
2386 int fds [2]; 2737 int fds [2];
… …
2426inline_speed void 2777inline_speed void
2427evpipe_write (EV_P_ EV_ATOMIC_T *flag) 2778evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2428{ 2779{
2429 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 */
2430 2781
2431 if (expect_true (*flag)) 2782 if (ecb_expect_true (*flag))
2432 return; 2783 return;
2433 2784
2434 *flag = 1; 2785 *flag = 1;
2435 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 */
2436 2787
… …
2457#endif 2808#endif
2458 { 2809 {
2459#ifdef _WIN32 2810#ifdef _WIN32
2460 WSABUF buf; 2811 WSABUF buf;
2461 DWORD sent; 2812 DWORD sent;
2462 buf.buf = &buf; 2813 buf.buf = (char *)&buf;
2463 buf.len = 1; 2814 buf.len = 1;
2464 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);
2465#else 2816#else
2466 write (evpipe [1], &(evpipe [1]), 1); 2817 write (evpipe [1], &(evpipe [1]), 1);
2467#endif 2818#endif
… …
2513 sig_pending = 0; 2864 sig_pending = 0;
2514 2865
2515 ECB_MEMORY_FENCE; 2866 ECB_MEMORY_FENCE;
2516 2867
2517 for (i = EV_NSIG - 1; i--; ) 2868 for (i = EV_NSIG - 1; i--; )
2518 if (expect_false (signals [i].pending)) 2869 if (ecb_expect_false (signals [i].pending))
2519 ev_feed_signal_event (EV_A_ i + 1); 2870 ev_feed_signal_event (EV_A_ i + 1);
2520 } 2871 }
2521#endif 2872#endif
2522 2873
2523#if EV_ASYNC_ENABLE 2874#if EV_ASYNC_ENABLE
… …
2539} 2890}
2540 2891
2541/*****************************************************************************/ 2892/*****************************************************************************/
2542 2893
2543void 2894void
2544ev_feed_signal (int signum) EV_THROW 2895ev_feed_signal (int signum) EV_NOEXCEPT
2545{ 2896{
2546#if EV_MULTIPLICITY 2897#if EV_MULTIPLICITY
2547 EV_P; 2898 EV_P;
2548 ECB_MEMORY_FENCE_ACQUIRE; 2899 ECB_MEMORY_FENCE_ACQUIRE;
2549 EV_A = signals [signum - 1].loop; 2900 EV_A = signals [signum - 1].loop;
… …
2564#endif 2915#endif
2565 2916
2566 ev_feed_signal (signum); 2917 ev_feed_signal (signum);
2567} 2918}
2568 2919
2569void noinline 2920ecb_noinline
2921void
2570ev_feed_signal_event (EV_P_ int signum) EV_THROW 2922ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
2571{ 2923{
2572 WL w; 2924 WL w;
2573 2925
2574 if (expect_false (signum <= 0 || signum >= EV_NSIG)) 2926 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
2575 return; 2927 return;
2576 2928
2577 --signum; 2929 --signum;
2578 2930
2579#if EV_MULTIPLICITY 2931#if EV_MULTIPLICITY
2580 /* 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 */
2581 /* or, likely more useful, feeding a signal nobody is waiting for */ 2933 /* or, likely more useful, feeding a signal nobody is waiting for */
2582 2934
2583 if (expect_false (signals [signum].loop != EV_A)) 2935 if (ecb_expect_false (signals [signum].loop != EV_A))
2584 return; 2936 return;
2585#endif 2937#endif
2586 2938
2587 signals [signum].pending = 0; 2939 signals [signum].pending = 0;
2588 ECB_MEMORY_FENCE_RELEASE; 2940 ECB_MEMORY_FENCE_RELEASE;
… …
2672 3024
2673#endif 3025#endif
2674 3026
2675/*****************************************************************************/ 3027/*****************************************************************************/
2676 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
2677#if EV_USE_IOCP 3080#if EV_USE_IOCP
2678# include "ev_iocp.c" 3081# include "ev_iocp.c"
2679#endif 3082#endif
2680#if EV_USE_PORT 3083#if EV_USE_PORT
2681# include "ev_port.c" 3084# include "ev_port.c"
… …
2684# include "ev_kqueue.c" 3087# include "ev_kqueue.c"
2685#endif 3088#endif
2686#if EV_USE_EPOLL 3089#if EV_USE_EPOLL
2687# include "ev_epoll.c" 3090# include "ev_epoll.c"
2688#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
2689#if EV_USE_POLL 3098#if EV_USE_POLL
2690# include "ev_poll.c" 3099# include "ev_poll.c"
2691#endif 3100#endif
2692#if EV_USE_SELECT 3101#if EV_USE_SELECT
2693# include "ev_select.c" 3102# include "ev_select.c"
2694#endif 3103#endif
2695 3104
2696int ecb_cold 3105ecb_cold int
2697ev_version_major (void) EV_THROW 3106ev_version_major (void) EV_NOEXCEPT
2698{ 3107{
2699 return EV_VERSION_MAJOR; 3108 return EV_VERSION_MAJOR;
2700} 3109}
2701 3110
2702int ecb_cold 3111ecb_cold int
2703ev_version_minor (void) EV_THROW 3112ev_version_minor (void) EV_NOEXCEPT
2704{ 3113{
2705 return EV_VERSION_MINOR; 3114 return EV_VERSION_MINOR;
2706} 3115}
2707 3116
2708/* 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 */
2709int inline_size ecb_cold 3118inline_size ecb_cold int
2710enable_secure (void) 3119enable_secure (void)
2711{ 3120{
2712#ifdef _WIN32 3121#ifdef _WIN32
2713 return 0; 3122 return 0;
2714#else 3123#else
2715 return getuid () != geteuid () 3124 return getuid () != geteuid ()
2716 || getgid () != getegid (); 3125 || getgid () != getegid ();
2717#endif 3126#endif
2718} 3127}
2719 3128
2720unsigned int ecb_cold 3129ecb_cold
3130unsigned int
2721ev_supported_backends (void) EV_THROW 3131ev_supported_backends (void) EV_NOEXCEPT
2722{ 3132{
2723 unsigned int flags = 0; 3133 unsigned int flags = 0;
2724 3134
2725 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 3135 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2726 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 3136 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
2727 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 3137 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2728 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 3138 if (EV_USE_LINUXAIO ) flags |= EVBACKEND_LINUXAIO;
2729 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 3139 if (EV_USE_IOURING && ev_linux_version () >= 0x050601) flags |= EVBACKEND_IOURING; /* 5.6.1+ */
2730 3140 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
3141 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
3142
2731 return flags; 3143 return flags;
2732} 3144}
2733 3145
2734unsigned int ecb_cold 3146ecb_cold
3147unsigned int
2735ev_recommended_backends (void) EV_THROW 3148ev_recommended_backends (void) EV_NOEXCEPT
2736{ 3149{
2737 unsigned int flags = ev_supported_backends (); 3150 unsigned int flags = ev_supported_backends ();
2738 3151
2739#ifndef __NetBSD__ 3152#ifndef __NetBSD__
2740 /* kqueue is borked on everything but netbsd apparently */ 3153 /* kqueue is borked on everything but netbsd apparently */
… …
2748#endif 3161#endif
2749#ifdef __FreeBSD__ 3162#ifdef __FreeBSD__
2750 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) */
2751#endif 3164#endif
2752 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
2753 return flags; 3175 return flags;
2754} 3176}
2755 3177
2756unsigned int ecb_cold 3178ecb_cold
3179unsigned int
2757ev_embeddable_backends (void) EV_THROW 3180ev_embeddable_backends (void) EV_NOEXCEPT
2758{ 3181{
2759 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 3182 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT | EVBACKEND_IOURING;
2760 3183
2761 /* 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 */
2762 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 */
2763 flags &= ~EVBACKEND_EPOLL; 3186 flags &= ~EVBACKEND_EPOLL;
2764 3187
3188 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
3189
2765 return flags; 3190 return flags;
2766} 3191}
2767 3192
2768unsigned int 3193unsigned int
2769ev_backend (EV_P) EV_THROW 3194ev_backend (EV_P) EV_NOEXCEPT
2770{ 3195{
2771 return backend; 3196 return backend;
2772} 3197}
2773 3198
2774#if EV_FEATURE_API 3199#if EV_FEATURE_API
2775unsigned int 3200unsigned int
2776ev_iteration (EV_P) EV_THROW 3201ev_iteration (EV_P) EV_NOEXCEPT
2777{ 3202{
2778 return loop_count; 3203 return loop_count;
2779} 3204}
2780 3205
2781unsigned int 3206unsigned int
2782ev_depth (EV_P) EV_THROW 3207ev_depth (EV_P) EV_NOEXCEPT
2783{ 3208{
2784 return loop_depth; 3209 return loop_depth;
2785} 3210}
2786 3211
2787void 3212void
2788ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW 3213ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2789{ 3214{
2790 io_blocktime = interval; 3215 io_blocktime = interval;
2791} 3216}
2792 3217
2793void 3218void
2794ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW 3219ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2795{ 3220{
2796 timeout_blocktime = interval; 3221 timeout_blocktime = interval;
2797} 3222}
2798 3223
2799void 3224void
2800ev_set_userdata (EV_P_ void *data) EV_THROW 3225ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2801{ 3226{
2802 userdata = data; 3227 userdata = data;
2803} 3228}
2804 3229
2805void * 3230void *
2806ev_userdata (EV_P) EV_THROW 3231ev_userdata (EV_P) EV_NOEXCEPT
2807{ 3232{
2808 return userdata; 3233 return userdata;
2809} 3234}
2810 3235
2811void 3236void
2812ev_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
2813{ 3238{
2814 invoke_cb = invoke_pending_cb; 3239 invoke_cb = invoke_pending_cb;
2815} 3240}
2816 3241
2817void 3242void
2818ev_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
2819{ 3244{
2820 release_cb = release; 3245 release_cb = release;
2821 acquire_cb = acquire; 3246 acquire_cb = acquire;
2822} 3247}
2823#endif 3248#endif
2824 3249
2825/* initialise a loop structure, must be zero-initialised */ 3250/* initialise a loop structure, must be zero-initialised */
2826static void noinline ecb_cold 3251ecb_noinline ecb_cold
3252static void
2827loop_init (EV_P_ unsigned int flags) EV_THROW 3253loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
2828{ 3254{
2829 if (!backend) 3255 if (!backend)
2830 { 3256 {
2831 origflags = flags; 3257 origflags = flags;
2832 3258
… …
2885 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3311 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2886#endif 3312#endif
2887#if EV_USE_SIGNALFD 3313#if EV_USE_SIGNALFD
2888 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 3314 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2889#endif 3315#endif
3316#if EV_USE_TIMERFD
3317 timerfd = flags & EVFLAG_NOTIMERFD ? -1 : -2;
3318#endif
2890 3319
2891 if (!(flags & EVBACKEND_MASK)) 3320 if (!(flags & EVBACKEND_MASK))
2892 flags |= ev_recommended_backends (); 3321 flags |= ev_recommended_backends ();
2893 3322
2894#if EV_USE_IOCP 3323#if EV_USE_IOCP
2895 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 3324 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2896#endif 3325#endif
2897#if EV_USE_PORT 3326#if EV_USE_PORT
2898 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3327 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
2899#endif 3328#endif
2900#if EV_USE_KQUEUE 3329#if EV_USE_KQUEUE
2901 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);
2902#endif 3337#endif
2903#if EV_USE_EPOLL 3338#if EV_USE_EPOLL
2904 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3339 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
2905#endif 3340#endif
2906#if EV_USE_POLL 3341#if EV_USE_POLL
2907 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3342 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
2908#endif 3343#endif
2909#if EV_USE_SELECT 3344#if EV_USE_SELECT
2910 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3345 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
2911#endif 3346#endif
2912 3347
2913 ev_prepare_init (&pending_w, pendingcb); 3348 ev_prepare_init (&pending_w, pendingcb);
2914 3349
2915#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3350#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
2918#endif 3353#endif
2919 } 3354 }
2920} 3355}
2921 3356
2922/* free up a loop structure */ 3357/* free up a loop structure */
2923void ecb_cold 3358ecb_cold
3359void
2924ev_loop_destroy (EV_P) 3360ev_loop_destroy (EV_P)
2925{ 3361{
2926 int i; 3362 int i;
2927 3363
2928#if EV_MULTIPLICITY 3364#if EV_MULTIPLICITY
… …
2931 return; 3367 return;
2932#endif 3368#endif
2933 3369
2934#if EV_CLEANUP_ENABLE 3370#if EV_CLEANUP_ENABLE
2935 /* queue cleanup watchers (and execute them) */ 3371 /* queue cleanup watchers (and execute them) */
2936 if (expect_false (cleanupcnt)) 3372 if (ecb_expect_false (cleanupcnt))
2937 { 3373 {
2938 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); 3374 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2939 EV_INVOKE_PENDING; 3375 EV_INVOKE_PENDING;
2940 } 3376 }
2941#endif 3377#endif
… …
2960#if EV_USE_SIGNALFD 3396#if EV_USE_SIGNALFD
2961 if (ev_is_active (&sigfd_w)) 3397 if (ev_is_active (&sigfd_w))
2962 close (sigfd); 3398 close (sigfd);
2963#endif 3399#endif
2964 3400
3401#if EV_USE_TIMERFD
3402 if (ev_is_active (&timerfd_w))
3403 close (timerfd);
3404#endif
3405
2965#if EV_USE_INOTIFY 3406#if EV_USE_INOTIFY
2966 if (fs_fd >= 0) 3407 if (fs_fd >= 0)
2967 close (fs_fd); 3408 close (fs_fd);
2968#endif 3409#endif
2969 3410
2970 if (backend_fd >= 0) 3411 if (backend_fd >= 0)
2971 close (backend_fd); 3412 close (backend_fd);
2972 3413
2973#if EV_USE_IOCP 3414#if EV_USE_IOCP
2974 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3415 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2975#endif 3416#endif
2976#if EV_USE_PORT 3417#if EV_USE_PORT
2977 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3418 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
2978#endif 3419#endif
2979#if EV_USE_KQUEUE 3420#if EV_USE_KQUEUE
2980 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);
2981#endif 3428#endif
2982#if EV_USE_EPOLL 3429#if EV_USE_EPOLL
2983 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3430 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
2984#endif 3431#endif
2985#if EV_USE_POLL 3432#if EV_USE_POLL
2986 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3433 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
2987#endif 3434#endif
2988#if EV_USE_SELECT 3435#if EV_USE_SELECT
2989 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3436 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
2990#endif 3437#endif
2991 3438
2992 for (i = NUMPRI; i--; ) 3439 for (i = NUMPRI; i--; )
2993 { 3440 {
2994 array_free (pending, [i]); 3441 array_free (pending, [i]);
… …
3036 3483
3037inline_size void 3484inline_size void
3038loop_fork (EV_P) 3485loop_fork (EV_P)
3039{ 3486{
3040#if EV_USE_PORT 3487#if EV_USE_PORT
3041 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3488 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
3042#endif 3489#endif
3043#if EV_USE_KQUEUE 3490#if EV_USE_KQUEUE
3044 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);
3045#endif 3498#endif
3046#if EV_USE_EPOLL 3499#if EV_USE_EPOLL
3047 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3500 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
3048#endif 3501#endif
3049#if EV_USE_INOTIFY 3502#if EV_USE_INOTIFY
3050 infy_fork (EV_A); 3503 infy_fork (EV_A);
3051#endif 3504#endif
3052 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
3053#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3527 #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
3054 if (ev_is_active (&pipe_w) && postfork != 2) 3528 if (ev_is_active (&pipe_w))
3055 { 3529 {
3056 /* 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 */
3057 3531
3058 ev_ref (EV_A); 3532 ev_ref (EV_A);
3059 ev_io_stop (EV_A_ &pipe_w); 3533 ev_io_stop (EV_A_ &pipe_w);
3060 3534
3061 if (evpipe [0] >= 0) 3535 if (evpipe [0] >= 0)
3062 EV_WIN32_CLOSE_FD (evpipe [0]); 3536 EV_WIN32_CLOSE_FD (evpipe [0]);
3063 3537
3064 evpipe_init (EV_A); 3538 evpipe_init (EV_A);
3065 /* iterate over everything, in case we missed something before */ 3539 /* iterate over everything, in case we missed something before */
3066 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3540 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3541 }
3542 #endif
3067 } 3543 }
3068#endif
3069 3544
3070 postfork = 0; 3545 postfork = 0;
3071} 3546}
3072 3547
3073#if EV_MULTIPLICITY 3548#if EV_MULTIPLICITY
3074 3549
3550ecb_cold
3075struct ev_loop * ecb_cold 3551struct ev_loop *
3076ev_loop_new (unsigned int flags) EV_THROW 3552ev_loop_new (unsigned int flags) EV_NOEXCEPT
3077{ 3553{
3078 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3554 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
3079 3555
3080 memset (EV_A, 0, sizeof (struct ev_loop)); 3556 memset (EV_A, 0, sizeof (struct ev_loop));
3081 loop_init (EV_A_ flags); 3557 loop_init (EV_A_ flags);
… …
3088} 3564}
3089 3565
3090#endif /* multiplicity */ 3566#endif /* multiplicity */
3091 3567
3092#if EV_VERIFY 3568#if EV_VERIFY
3093static void noinline ecb_cold 3569ecb_noinline ecb_cold
3570static void
3094verify_watcher (EV_P_ W w) 3571verify_watcher (EV_P_ W w)
3095{ 3572{
3096 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));
3097 3574
3098 if (w->pending) 3575 if (w->pending)
3099 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));
3100} 3577}
3101 3578
3102static void noinline ecb_cold 3579ecb_noinline ecb_cold
3580static void
3103verify_heap (EV_P_ ANHE *heap, int N) 3581verify_heap (EV_P_ ANHE *heap, int N)
3104{ 3582{
3105 int i; 3583 int i;
3106 3584
3107 for (i = HEAP0; i < N + HEAP0; ++i) 3585 for (i = HEAP0; i < N + HEAP0; ++i)
… …
3112 3590
3113 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3591 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
3114 } 3592 }
3115} 3593}
3116 3594
3117static void noinline ecb_cold 3595ecb_noinline ecb_cold
3596static void
3118array_verify (EV_P_ W *ws, int cnt) 3597array_verify (EV_P_ W *ws, int cnt)
3119{ 3598{
3120 while (cnt--) 3599 while (cnt--)
3121 { 3600 {
3122 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3601 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
3125} 3604}
3126#endif 3605#endif
3127 3606
3128#if EV_FEATURE_API 3607#if EV_FEATURE_API
3129void ecb_cold 3608void ecb_cold
3130ev_verify (EV_P) EV_THROW 3609ev_verify (EV_P) EV_NOEXCEPT
3131{ 3610{
3132#if EV_VERIFY 3611#if EV_VERIFY
3133 int i; 3612 int i;
3134 WL w, w2; 3613 WL w, w2;
3135 3614
… …
3211#endif 3690#endif
3212} 3691}
3213#endif 3692#endif
3214 3693
3215#if EV_MULTIPLICITY 3694#if EV_MULTIPLICITY
3695ecb_cold
3216struct ev_loop * ecb_cold 3696struct ev_loop *
3217#else 3697#else
3218int 3698int
3219#endif 3699#endif
3220ev_default_loop (unsigned int flags) EV_THROW 3700ev_default_loop (unsigned int flags) EV_NOEXCEPT
3221{ 3701{
3222 if (!ev_default_loop_ptr) 3702 if (!ev_default_loop_ptr)
3223 { 3703 {
3224#if EV_MULTIPLICITY 3704#if EV_MULTIPLICITY
3225 EV_P = ev_default_loop_ptr = &default_loop_struct; 3705 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
3244 3724
3245 return ev_default_loop_ptr; 3725 return ev_default_loop_ptr;
3246} 3726}
3247 3727
3248void 3728void
3249ev_loop_fork (EV_P) EV_THROW 3729ev_loop_fork (EV_P) EV_NOEXCEPT
3250{ 3730{
3251 postfork = 1; 3731 postfork = 1;
3252} 3732}
3253 3733
3254/*****************************************************************************/ 3734/*****************************************************************************/
… …
3258{ 3738{
3259 EV_CB_INVOKE ((W)w, revents); 3739 EV_CB_INVOKE ((W)w, revents);
3260} 3740}
3261 3741
3262unsigned int 3742unsigned int
3263ev_pending_count (EV_P) EV_THROW 3743ev_pending_count (EV_P) EV_NOEXCEPT
3264{ 3744{
3265 int pri; 3745 int pri;
3266 unsigned int count = 0; 3746 unsigned int count = 0;
3267 3747
3268 for (pri = NUMPRI; pri--; ) 3748 for (pri = NUMPRI; pri--; )
3269 count += pendingcnt [pri]; 3749 count += pendingcnt [pri];
3270 3750
3271 return count; 3751 return count;
3272} 3752}
3273 3753
3274void noinline 3754ecb_noinline
3755void
3275ev_invoke_pending (EV_P) 3756ev_invoke_pending (EV_P)
3276{ 3757{
3277 pendingpri = NUMPRI; 3758 pendingpri = NUMPRI;
3278 3759
3279 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */ 3760 do
3280 { 3761 {
3281 --pendingpri; 3762 --pendingpri;
3282 3763
3764 /* pendingpri possibly gets modified in the inner loop */
3283 while (pendingcnt [pendingpri]) 3765 while (pendingcnt [pendingpri])
3284 { 3766 {
3285 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri]; 3767 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
3286 3768
3287 p->w->pending = 0; 3769 p->w->pending = 0;
3288 EV_CB_INVOKE (p->w, p->events); 3770 EV_CB_INVOKE (p->w, p->events);
3289 EV_FREQUENT_CHECK; 3771 EV_FREQUENT_CHECK;
3290 } 3772 }
3291 } 3773 }
3774 while (pendingpri);
3292} 3775}
3293 3776
3294#if EV_IDLE_ENABLE 3777#if EV_IDLE_ENABLE
3295/* make idle watchers pending. this handles the "call-idle */ 3778/* make idle watchers pending. this handles the "call-idle */
3296/* only when higher priorities are idle" logic */ 3779/* only when higher priorities are idle" logic */
3297inline_size void 3780inline_size void
3298idle_reify (EV_P) 3781idle_reify (EV_P)
3299{ 3782{
3300 if (expect_false (idleall)) 3783 if (ecb_expect_false (idleall))
3301 { 3784 {
3302 int pri; 3785 int pri;
3303 3786
3304 for (pri = NUMPRI; pri--; ) 3787 for (pri = NUMPRI; pri--; )
3305 { 3788 {
… …
3335 { 3818 {
3336 ev_at (w) += w->repeat; 3819 ev_at (w) += w->repeat;
3337 if (ev_at (w) < mn_now) 3820 if (ev_at (w) < mn_now)
3338 ev_at (w) = mn_now; 3821 ev_at (w) = mn_now;
3339 3822
3340 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.)));
3341 3824
3342 ANHE_at_cache (timers [HEAP0]); 3825 ANHE_at_cache (timers [HEAP0]);
3343 downheap (timers, timercnt, HEAP0); 3826 downheap (timers, timercnt, HEAP0);
3344 } 3827 }
3345 else 3828 else
… …
3354 } 3837 }
3355} 3838}
3356 3839
3357#if EV_PERIODIC_ENABLE 3840#if EV_PERIODIC_ENABLE
3358 3841
3359static void noinline 3842ecb_noinline
3843static void
3360periodic_recalc (EV_P_ ev_periodic *w) 3844periodic_recalc (EV_P_ ev_periodic *w)
3361{ 3845{
3362 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3846 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3363 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);
3364 3848
… …
3366 while (at <= ev_rt_now) 3850 while (at <= ev_rt_now)
3367 { 3851 {
3368 ev_tstamp nat = at + w->interval; 3852 ev_tstamp nat = at + w->interval;
3369 3853
3370 /* when resolution fails us, we use ev_rt_now */ 3854 /* when resolution fails us, we use ev_rt_now */
3371 if (expect_false (nat == at)) 3855 if (ecb_expect_false (nat == at))
3372 { 3856 {
3373 at = ev_rt_now; 3857 at = ev_rt_now;
3374 break; 3858 break;
3375 } 3859 }
3376 3860
… …
3422 } 3906 }
3423} 3907}
3424 3908
3425/* simply recalculate all periodics */ 3909/* simply recalculate all periodics */
3426/* 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? */
3427static void noinline ecb_cold 3911ecb_noinline ecb_cold
3912static void
3428periodics_reschedule (EV_P) 3913periodics_reschedule (EV_P)
3429{ 3914{
3430 int i; 3915 int i;
3431 3916
3432 /* adjust periodics after time jump */ 3917 /* adjust periodics after time jump */
… …
3445 reheap (periodics, periodiccnt); 3930 reheap (periodics, periodiccnt);
3446} 3931}
3447#endif 3932#endif
3448 3933
3449/* adjust all timers by a given offset */ 3934/* adjust all timers by a given offset */
3450static void noinline ecb_cold 3935ecb_noinline ecb_cold
3936static void
3451timers_reschedule (EV_P_ ev_tstamp adjust) 3937timers_reschedule (EV_P_ ev_tstamp adjust)
3452{ 3938{
3453 int i; 3939 int i;
3454 3940
3455 for (i = 0; i < timercnt; ++i) 3941 for (i = 0; i < timercnt; ++i)
… …
3464/* also detect if there was a timejump, and act accordingly */ 3950/* also detect if there was a timejump, and act accordingly */
3465inline_speed void 3951inline_speed void
3466time_update (EV_P_ ev_tstamp max_block) 3952time_update (EV_P_ ev_tstamp max_block)
3467{ 3953{
3468#if EV_USE_MONOTONIC 3954#if EV_USE_MONOTONIC
3469 if (expect_true (have_monotonic)) 3955 if (ecb_expect_true (have_monotonic))
3470 { 3956 {
3471 int i; 3957 int i;
3472 ev_tstamp odiff = rtmn_diff; 3958 ev_tstamp odiff = rtmn_diff;
3473 3959
3474 mn_now = get_clock (); 3960 mn_now = get_clock ();
3475 3961
3476 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3962 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
3477 /* interpolate in the meantime */ 3963 /* interpolate in the meantime */
3478 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)))
3479 { 3965 {
3480 ev_rt_now = rtmn_diff + mn_now; 3966 ev_rt_now = rtmn_diff + mn_now;
3481 return; 3967 return;
3482 } 3968 }
3483 3969
… …
3497 ev_tstamp diff; 3983 ev_tstamp diff;
3498 rtmn_diff = ev_rt_now - mn_now; 3984 rtmn_diff = ev_rt_now - mn_now;
3499 3985
3500 diff = odiff - rtmn_diff; 3986 diff = odiff - rtmn_diff;
3501 3987
3502 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)))
3503 return; /* all is well */ 3989 return; /* all is well */
3504 3990
3505 ev_rt_now = ev_time (); 3991 ev_rt_now = ev_time ();
3506 mn_now = get_clock (); 3992 mn_now = get_clock ();
3507 now_floor = mn_now; 3993 now_floor = mn_now;
… …
3516 else 4002 else
3517#endif 4003#endif
3518 { 4004 {
3519 ev_rt_now = ev_time (); 4005 ev_rt_now = ev_time ();
3520 4006
3521 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)))
3522 { 4008 {
3523 /* 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 */
3524 timers_reschedule (EV_A_ ev_rt_now - mn_now); 4010 timers_reschedule (EV_A_ ev_rt_now - mn_now);
3525#if EV_PERIODIC_ENABLE 4011#if EV_PERIODIC_ENABLE
3526 periodics_reschedule (EV_A); 4012 periodics_reschedule (EV_A);
… …
3549#if EV_VERIFY >= 2 4035#if EV_VERIFY >= 2
3550 ev_verify (EV_A); 4036 ev_verify (EV_A);
3551#endif 4037#endif
3552 4038
3553#ifndef _WIN32 4039#ifndef _WIN32
3554 if (expect_false (curpid)) /* penalise the forking check even more */ 4040 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
3555 if (expect_false (getpid () != curpid)) 4041 if (ecb_expect_false (getpid () != curpid))
3556 { 4042 {
3557 curpid = getpid (); 4043 curpid = getpid ();
3558 postfork = 1; 4044 postfork = 1;
3559 } 4045 }
3560#endif 4046#endif
3561 4047
3562#if EV_FORK_ENABLE 4048#if EV_FORK_ENABLE
3563 /* we might have forked, so queue fork handlers */ 4049 /* we might have forked, so queue fork handlers */
3564 if (expect_false (postfork)) 4050 if (ecb_expect_false (postfork))
3565 if (forkcnt) 4051 if (forkcnt)
3566 { 4052 {
3567 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 4053 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
3568 EV_INVOKE_PENDING; 4054 EV_INVOKE_PENDING;
3569 } 4055 }
3570#endif 4056#endif
3571 4057
3572#if EV_PREPARE_ENABLE 4058#if EV_PREPARE_ENABLE
3573 /* queue prepare watchers (and execute them) */ 4059 /* queue prepare watchers (and execute them) */
3574 if (expect_false (preparecnt)) 4060 if (ecb_expect_false (preparecnt))
3575 { 4061 {
3576 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 4062 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
3577 EV_INVOKE_PENDING; 4063 EV_INVOKE_PENDING;
3578 } 4064 }
3579#endif 4065#endif
3580 4066
3581 if (expect_false (loop_done)) 4067 if (ecb_expect_false (loop_done))
3582 break; 4068 break;
3583 4069
3584 /* we might have forked, so reify kernel state if necessary */ 4070 /* we might have forked, so reify kernel state if necessary */
3585 if (expect_false (postfork)) 4071 if (ecb_expect_false (postfork))
3586 loop_fork (EV_A); 4072 loop_fork (EV_A);
3587 4073
3588 /* update fd-related kernel structures */ 4074 /* update fd-related kernel structures */
3589 fd_reify (EV_A); 4075 fd_reify (EV_A);
3590 4076
… …
3595 4081
3596 /* remember old timestamp for io_blocktime calculation */ 4082 /* remember old timestamp for io_blocktime calculation */
3597 ev_tstamp prev_mn_now = mn_now; 4083 ev_tstamp prev_mn_now = mn_now;
3598 4084
3599 /* update time to cancel out callback processing overhead */ 4085 /* update time to cancel out callback processing overhead */
3600 time_update (EV_A_ 1e100); 4086 time_update (EV_A_ EV_TS_CONST (EV_TSTAMP_HUGE));
3601 4087
3602 /* from now on, we want a pipe-wake-up */ 4088 /* from now on, we want a pipe-wake-up */
3603 pipe_write_wanted = 1; 4089 pipe_write_wanted = 1;
3604 4090
3605 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 */
3606 4092
3607 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) 4093 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
3608 { 4094 {
3609 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
3610 4108
3611 if (timercnt) 4109 if (timercnt)
3612 { 4110 {
3613 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now; 4111 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
3614 if (waittime > to) waittime = to; 4112 if (waittime > to) waittime = to;
… …
3621 if (waittime > to) waittime = to; 4119 if (waittime > to) waittime = to;
3622 } 4120 }
3623#endif 4121#endif
3624 4122
3625 /* don't let timeouts decrease the waittime below timeout_blocktime */ 4123 /* don't let timeouts decrease the waittime below timeout_blocktime */
3626 if (expect_false (waittime < timeout_blocktime)) 4124 if (ecb_expect_false (waittime < timeout_blocktime))
3627 waittime = timeout_blocktime; 4125 waittime = timeout_blocktime;
3628 4126
3629 /* at this point, we NEED to wait, so we have to ensure */ 4127 /* now there are two more special cases left, either we have
3630 /* 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 */
3631 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.)
3632 waittime = backend_mintime; 4135 : backend_mintime;
3633 4136
3634 /* extra check because io_blocktime is commonly 0 */ 4137 /* extra check because io_blocktime is commonly 0 */
3635 if (expect_false (io_blocktime)) 4138 if (ecb_expect_false (io_blocktime))
3636 { 4139 {
3637 sleeptime = io_blocktime - (mn_now - prev_mn_now); 4140 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3638 4141
3639 if (sleeptime > waittime - backend_mintime) 4142 if (sleeptime > waittime - backend_mintime)
3640 sleeptime = waittime - backend_mintime; 4143 sleeptime = waittime - backend_mintime;
3641 4144
3642 if (expect_true (sleeptime > 0.)) 4145 if (ecb_expect_true (sleeptime > EV_TS_CONST (0.)))
3643 { 4146 {
3644 ev_sleep (sleeptime); 4147 ev_sleep (sleeptime);
3645 waittime -= sleeptime; 4148 waittime -= sleeptime;
3646 } 4149 }
3647 } 4150 }
… …
3661 { 4164 {
3662 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)));
3663 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 4166 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3664 } 4167 }
3665 4168
3666
3667 /* update ev_rt_now, do magic */ 4169 /* update ev_rt_now, do magic */
3668 time_update (EV_A_ waittime + sleeptime); 4170 time_update (EV_A_ waittime + sleeptime);
3669 } 4171 }
3670 4172
3671 /* queue pending timers and reschedule them */ 4173 /* queue pending timers and reschedule them */
… …
3679 idle_reify (EV_A); 4181 idle_reify (EV_A);
3680#endif 4182#endif
3681 4183
3682#if EV_CHECK_ENABLE 4184#if EV_CHECK_ENABLE
3683 /* queue check watchers, to be executed first */ 4185 /* queue check watchers, to be executed first */
3684 if (expect_false (checkcnt)) 4186 if (ecb_expect_false (checkcnt))
3685 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 4187 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3686#endif 4188#endif
3687 4189
3688 EV_INVOKE_PENDING; 4190 EV_INVOKE_PENDING;
3689 } 4191 }
3690 while (expect_true ( 4192 while (ecb_expect_true (
3691 activecnt 4193 activecnt
3692 && !loop_done 4194 && !loop_done
3693 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) 4195 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
3694 )); 4196 ));
3695 4197
… …
3702 4204
3703 return activecnt; 4205 return activecnt;
3704} 4206}
3705 4207
3706void 4208void
3707ev_break (EV_P_ int how) EV_THROW 4209ev_break (EV_P_ int how) EV_NOEXCEPT
3708{ 4210{
3709 loop_done = how; 4211 loop_done = how;
3710} 4212}
3711 4213
3712void 4214void
3713ev_ref (EV_P) EV_THROW 4215ev_ref (EV_P) EV_NOEXCEPT
3714{ 4216{
3715 ++activecnt; 4217 ++activecnt;
3716} 4218}
3717 4219
3718void 4220void
3719ev_unref (EV_P) EV_THROW 4221ev_unref (EV_P) EV_NOEXCEPT
3720{ 4222{
3721 --activecnt; 4223 --activecnt;
3722} 4224}
3723 4225
3724void 4226void
3725ev_now_update (EV_P) EV_THROW 4227ev_now_update (EV_P) EV_NOEXCEPT
3726{ 4228{
3727 time_update (EV_A_ 1e100); 4229 time_update (EV_A_ EV_TSTAMP_HUGE);
3728} 4230}
3729 4231
3730void 4232void
3731ev_suspend (EV_P) EV_THROW 4233ev_suspend (EV_P) EV_NOEXCEPT
3732{ 4234{
3733 ev_now_update (EV_A); 4235 ev_now_update (EV_A);
3734} 4236}
3735 4237
3736void 4238void
3737ev_resume (EV_P) EV_THROW 4239ev_resume (EV_P) EV_NOEXCEPT
3738{ 4240{
3739 ev_tstamp mn_prev = mn_now; 4241 ev_tstamp mn_prev = mn_now;
3740 4242
3741 ev_now_update (EV_A); 4243 ev_now_update (EV_A);
3742 timers_reschedule (EV_A_ mn_now - mn_prev); 4244 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
3759inline_size void 4261inline_size void
3760wlist_del (WL *head, WL elem) 4262wlist_del (WL *head, WL elem)
3761{ 4263{
3762 while (*head) 4264 while (*head)
3763 { 4265 {
3764 if (expect_true (*head == elem)) 4266 if (ecb_expect_true (*head == elem))
3765 { 4267 {
3766 *head = elem->next; 4268 *head = elem->next;
3767 break; 4269 break;
3768 } 4270 }
3769 4271
… …
3781 w->pending = 0; 4283 w->pending = 0;
3782 } 4284 }
3783} 4285}
3784 4286
3785int 4287int
3786ev_clear_pending (EV_P_ void *w) EV_THROW 4288ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
3787{ 4289{
3788 W w_ = (W)w; 4290 W w_ = (W)w;
3789 int pending = w_->pending; 4291 int pending = w_->pending;
3790 4292
3791 if (expect_true (pending)) 4293 if (ecb_expect_true (pending))
3792 { 4294 {
3793 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4295 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3794 p->w = (W)&pending_w; 4296 p->w = (W)&pending_w;
3795 w_->pending = 0; 4297 w_->pending = 0;
3796 return p->events; 4298 return p->events;
… …
3823 w->active = 0; 4325 w->active = 0;
3824} 4326}
3825 4327
3826/*****************************************************************************/ 4328/*****************************************************************************/
3827 4329
3828void noinline 4330ecb_noinline
4331void
3829ev_io_start (EV_P_ ev_io *w) EV_THROW 4332ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
3830{ 4333{
3831 int fd = w->fd; 4334 int fd = w->fd;
3832 4335
3833 if (expect_false (ev_is_active (w))) 4336 if (ecb_expect_false (ev_is_active (w)))
3834 return; 4337 return;
3835 4338
3836 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4339 assert (("libev: ev_io_start called with negative fd", fd >= 0));
3837 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))));
3838 4341
4342#if EV_VERIFY >= 2
4343 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4344#endif
3839 EV_FREQUENT_CHECK; 4345 EV_FREQUENT_CHECK;
3840 4346
3841 ev_start (EV_A_ (W)w, 1); 4347 ev_start (EV_A_ (W)w, 1);
3842 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4348 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
3843 wlist_add (&anfds[fd].head, (WL)w); 4349 wlist_add (&anfds[fd].head, (WL)w);
3844 4350
3845 /* common bug, apparently */ 4351 /* common bug, apparently */
3846 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));
3847 4353
… …
3849 w->events &= ~EV__IOFDSET; 4355 w->events &= ~EV__IOFDSET;
3850 4356
3851 EV_FREQUENT_CHECK; 4357 EV_FREQUENT_CHECK;
3852} 4358}
3853 4359
3854void noinline 4360ecb_noinline
4361void
3855ev_io_stop (EV_P_ ev_io *w) EV_THROW 4362ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
3856{ 4363{
3857 clear_pending (EV_A_ (W)w); 4364 clear_pending (EV_A_ (W)w);
3858 if (expect_false (!ev_is_active (w))) 4365 if (ecb_expect_false (!ev_is_active (w)))
3859 return; 4366 return;
3860 4367
3861 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));
3862 4369
4370#if EV_VERIFY >= 2
4371 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4372#endif
3863 EV_FREQUENT_CHECK; 4373 EV_FREQUENT_CHECK;
3864 4374
3865 wlist_del (&anfds[w->fd].head, (WL)w); 4375 wlist_del (&anfds[w->fd].head, (WL)w);
3866 ev_stop (EV_A_ (W)w); 4376 ev_stop (EV_A_ (W)w);
3867 4377
3868 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 4378 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3869 4379
3870 EV_FREQUENT_CHECK; 4380 EV_FREQUENT_CHECK;
3871} 4381}
3872 4382
3873void noinline 4383ecb_noinline
4384void
3874ev_timer_start (EV_P_ ev_timer *w) EV_THROW 4385ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
3875{ 4386{
3876 if (expect_false (ev_is_active (w))) 4387 if (ecb_expect_false (ev_is_active (w)))
3877 return; 4388 return;
3878 4389
3879 ev_at (w) += mn_now; 4390 ev_at (w) += mn_now;
3880 4391
3881 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.));
3882 4393
3883 EV_FREQUENT_CHECK; 4394 EV_FREQUENT_CHECK;
3884 4395
3885 ++timercnt; 4396 ++timercnt;
3886 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4397 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
3887 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4398 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
3888 ANHE_w (timers [ev_active (w)]) = (WT)w; 4399 ANHE_w (timers [ev_active (w)]) = (WT)w;
3889 ANHE_at_cache (timers [ev_active (w)]); 4400 ANHE_at_cache (timers [ev_active (w)]);
3890 upheap (timers, ev_active (w)); 4401 upheap (timers, ev_active (w));
3891 4402
3892 EV_FREQUENT_CHECK; 4403 EV_FREQUENT_CHECK;
3893 4404
3894 /*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));*/
3895} 4406}
3896 4407
3897void noinline 4408ecb_noinline
4409void
3898ev_timer_stop (EV_P_ ev_timer *w) EV_THROW 4410ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
3899{ 4411{
3900 clear_pending (EV_A_ (W)w); 4412 clear_pending (EV_A_ (W)w);
3901 if (expect_false (!ev_is_active (w))) 4413 if (ecb_expect_false (!ev_is_active (w)))
3902 return; 4414 return;
3903 4415
3904 EV_FREQUENT_CHECK; 4416 EV_FREQUENT_CHECK;
3905 4417
3906 { 4418 {
… …
3908 4420
3909 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));
3910 4422
3911 --timercnt; 4423 --timercnt;
3912 4424
3913 if (expect_true (active < timercnt + HEAP0)) 4425 if (ecb_expect_true (active < timercnt + HEAP0))
3914 { 4426 {
3915 timers [active] = timers [timercnt + HEAP0]; 4427 timers [active] = timers [timercnt + HEAP0];
3916 adjustheap (timers, timercnt, active); 4428 adjustheap (timers, timercnt, active);
3917 } 4429 }
3918 } 4430 }
… …
3922 ev_stop (EV_A_ (W)w); 4434 ev_stop (EV_A_ (W)w);
3923 4435
3924 EV_FREQUENT_CHECK; 4436 EV_FREQUENT_CHECK;
3925} 4437}
3926 4438
3927void noinline 4439ecb_noinline
4440void
3928ev_timer_again (EV_P_ ev_timer *w) EV_THROW 4441ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
3929{ 4442{
3930 EV_FREQUENT_CHECK; 4443 EV_FREQUENT_CHECK;
3931 4444
3932 clear_pending (EV_A_ (W)w); 4445 clear_pending (EV_A_ (W)w);
3933 4446
… …
3950 4463
3951 EV_FREQUENT_CHECK; 4464 EV_FREQUENT_CHECK;
3952} 4465}
3953 4466
3954ev_tstamp 4467ev_tstamp
3955ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW 4468ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
3956{ 4469{
3957 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.));
3958} 4471}
3959 4472
3960#if EV_PERIODIC_ENABLE 4473#if EV_PERIODIC_ENABLE
3961void noinline 4474ecb_noinline
4475void
3962ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW 4476ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
3963{ 4477{
3964 if (expect_false (ev_is_active (w))) 4478 if (ecb_expect_false (ev_is_active (w)))
3965 return; 4479 return;
4480
4481#if EV_USE_TIMERFD
4482 if (timerfd == -2)
4483 evtimerfd_init (EV_A);
4484#endif
3966 4485
3967 if (w->reschedule_cb) 4486 if (w->reschedule_cb)
3968 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4487 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
3969 else if (w->interval) 4488 else if (w->interval)
3970 { 4489 {
… …
3976 4495
3977 EV_FREQUENT_CHECK; 4496 EV_FREQUENT_CHECK;
3978 4497
3979 ++periodiccnt; 4498 ++periodiccnt;
3980 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4499 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
3981 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4500 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
3982 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4501 ANHE_w (periodics [ev_active (w)]) = (WT)w;
3983 ANHE_at_cache (periodics [ev_active (w)]); 4502 ANHE_at_cache (periodics [ev_active (w)]);
3984 upheap (periodics, ev_active (w)); 4503 upheap (periodics, ev_active (w));
3985 4504
3986 EV_FREQUENT_CHECK; 4505 EV_FREQUENT_CHECK;
3987 4506
3988 /*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));*/
3989} 4508}
3990 4509
3991void noinline 4510ecb_noinline
4511void
3992ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW 4512ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
3993{ 4513{
3994 clear_pending (EV_A_ (W)w); 4514 clear_pending (EV_A_ (W)w);
3995 if (expect_false (!ev_is_active (w))) 4515 if (ecb_expect_false (!ev_is_active (w)))
3996 return; 4516 return;
3997 4517
3998 EV_FREQUENT_CHECK; 4518 EV_FREQUENT_CHECK;
3999 4519
4000 { 4520 {
… …
4002 4522
4003 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));
4004 4524
4005 --periodiccnt; 4525 --periodiccnt;
4006 4526
4007 if (expect_true (active < periodiccnt + HEAP0)) 4527 if (ecb_expect_true (active < periodiccnt + HEAP0))
4008 { 4528 {
4009 periodics [active] = periodics [periodiccnt + HEAP0]; 4529 periodics [active] = periodics [periodiccnt + HEAP0];
4010 adjustheap (periodics, periodiccnt, active); 4530 adjustheap (periodics, periodiccnt, active);
4011 } 4531 }
4012 } 4532 }
… …
4014 ev_stop (EV_A_ (W)w); 4534 ev_stop (EV_A_ (W)w);
4015 4535
4016 EV_FREQUENT_CHECK; 4536 EV_FREQUENT_CHECK;
4017} 4537}
4018 4538
4019void noinline 4539ecb_noinline
4540void
4020ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW 4541ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
4021{ 4542{
4022 /* TODO: use adjustheap and recalculation */ 4543 /* TODO: use adjustheap and recalculation */
4023 ev_periodic_stop (EV_A_ w); 4544 ev_periodic_stop (EV_A_ w);
4024 ev_periodic_start (EV_A_ w); 4545 ev_periodic_start (EV_A_ w);
4025} 4546}
… …
4029# define SA_RESTART 0 4550# define SA_RESTART 0
4030#endif 4551#endif
4031 4552
4032#if EV_SIGNAL_ENABLE 4553#if EV_SIGNAL_ENABLE
4033 4554
4034void noinline 4555ecb_noinline
4556void
4035ev_signal_start (EV_P_ ev_signal *w) EV_THROW 4557ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
4036{ 4558{
4037 if (expect_false (ev_is_active (w))) 4559 if (ecb_expect_false (ev_is_active (w)))
4038 return; 4560 return;
4039 4561
4040 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));
4041 4563
4042#if EV_MULTIPLICITY 4564#if EV_MULTIPLICITY
… …
4111 } 4633 }
4112 4634
4113 EV_FREQUENT_CHECK; 4635 EV_FREQUENT_CHECK;
4114} 4636}
4115 4637
4116void noinline 4638ecb_noinline
4639void
4117ev_signal_stop (EV_P_ ev_signal *w) EV_THROW 4640ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
4118{ 4641{
4119 clear_pending (EV_A_ (W)w); 4642 clear_pending (EV_A_ (W)w);
4120 if (expect_false (!ev_is_active (w))) 4643 if (ecb_expect_false (!ev_is_active (w)))
4121 return; 4644 return;
4122 4645
4123 EV_FREQUENT_CHECK; 4646 EV_FREQUENT_CHECK;
4124 4647
4125 wlist_del (&signals [w->signum - 1].head, (WL)w); 4648 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
4153#endif 4676#endif
4154 4677
4155#if EV_CHILD_ENABLE 4678#if EV_CHILD_ENABLE
4156 4679
4157void 4680void
4158ev_child_start (EV_P_ ev_child *w) EV_THROW 4681ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
4159{ 4682{
4160#if EV_MULTIPLICITY 4683#if EV_MULTIPLICITY
4161 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));
4162#endif 4685#endif
4163 if (expect_false (ev_is_active (w))) 4686 if (ecb_expect_false (ev_is_active (w)))
4164 return; 4687 return;
4165 4688
4166 EV_FREQUENT_CHECK; 4689 EV_FREQUENT_CHECK;
4167 4690
4168 ev_start (EV_A_ (W)w, 1); 4691 ev_start (EV_A_ (W)w, 1);
… …
4170 4693
4171 EV_FREQUENT_CHECK; 4694 EV_FREQUENT_CHECK;
4172} 4695}
4173 4696
4174void 4697void
4175ev_child_stop (EV_P_ ev_child *w) EV_THROW 4698ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
4176{ 4699{
4177 clear_pending (EV_A_ (W)w); 4700 clear_pending (EV_A_ (W)w);
4178 if (expect_false (!ev_is_active (w))) 4701 if (ecb_expect_false (!ev_is_active (w)))
4179 return; 4702 return;
4180 4703
4181 EV_FREQUENT_CHECK; 4704 EV_FREQUENT_CHECK;
4182 4705
4183 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); 4706 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
… …
4197 4720
4198#define DEF_STAT_INTERVAL 5.0074891 4721#define DEF_STAT_INTERVAL 5.0074891
4199#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4722#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
4200#define MIN_STAT_INTERVAL 0.1074891 4723#define MIN_STAT_INTERVAL 0.1074891
4201 4724
4202static 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);
4203 4726
4204#if EV_USE_INOTIFY 4727#if EV_USE_INOTIFY
4205 4728
4206/* 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 */
4207# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4730# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
4208 4731
4209static void noinline 4732ecb_noinline
4733static void
4210infy_add (EV_P_ ev_stat *w) 4734infy_add (EV_P_ ev_stat *w)
4211{ 4735{
4212 w->wd = inotify_add_watch (fs_fd, w->path, 4736 w->wd = inotify_add_watch (fs_fd, w->path,
4213 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY 4737 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4214 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO 4738 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
… …
4278 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4802 if (ev_is_active (&w->timer)) ev_ref (EV_A);
4279 ev_timer_again (EV_A_ &w->timer); 4803 ev_timer_again (EV_A_ &w->timer);
4280 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4804 if (ev_is_active (&w->timer)) ev_unref (EV_A);
4281} 4805}
4282 4806
4283static void noinline 4807ecb_noinline
4808static void
4284infy_del (EV_P_ ev_stat *w) 4809infy_del (EV_P_ ev_stat *w)
4285{ 4810{
4286 int slot; 4811 int slot;
4287 int wd = w->wd; 4812 int wd = w->wd;
4288 4813
… …
4295 4820
4296 /* remove this watcher, if others are watching it, they will rearm */ 4821 /* remove this watcher, if others are watching it, they will rearm */
4297 inotify_rm_watch (fs_fd, wd); 4822 inotify_rm_watch (fs_fd, wd);
4298} 4823}
4299 4824
4300static void noinline 4825ecb_noinline
4826static void
4301infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4827infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
4302{ 4828{
4303 if (slot < 0) 4829 if (slot < 0)
4304 /* overflow, need to check for all hash slots */ 4830 /* overflow, need to check for all hash slots */
4305 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4831 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
4341 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4867 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4342 ofs += sizeof (struct inotify_event) + ev->len; 4868 ofs += sizeof (struct inotify_event) + ev->len;
4343 } 4869 }
4344} 4870}
4345 4871
4346inline_size void ecb_cold 4872inline_size ecb_cold
4873void
4347ev_check_2625 (EV_P) 4874ev_check_2625 (EV_P)
4348{ 4875{
4349 /* kernels < 2.6.25 are borked 4876 /* kernels < 2.6.25 are borked
4350 * 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
4351 */ 4878 */
… …
4441#else 4968#else
4442# define EV_LSTAT(p,b) lstat (p, b) 4969# define EV_LSTAT(p,b) lstat (p, b)
4443#endif 4970#endif
4444 4971
4445void 4972void
4446ev_stat_stat (EV_P_ ev_stat *w) EV_THROW 4973ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
4447{ 4974{
4448 if (lstat (w->path, &w->attr) < 0) 4975 if (lstat (w->path, &w->attr) < 0)
4449 w->attr.st_nlink = 0; 4976 w->attr.st_nlink = 0;
4450 else if (!w->attr.st_nlink) 4977 else if (!w->attr.st_nlink)
4451 w->attr.st_nlink = 1; 4978 w->attr.st_nlink = 1;
4452} 4979}
4453 4980
4454static void noinline 4981ecb_noinline
4982static void
4455stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4983stat_timer_cb (EV_P_ ev_timer *w_, int revents)
4456{ 4984{
4457 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4985 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
4458 4986
4459 ev_statdata prev = w->attr; 4987 ev_statdata prev = w->attr;
… …
4490 ev_feed_event (EV_A_ w, EV_STAT); 5018 ev_feed_event (EV_A_ w, EV_STAT);
4491 } 5019 }
4492} 5020}
4493 5021
4494void 5022void
4495ev_stat_start (EV_P_ ev_stat *w) EV_THROW 5023ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
4496{ 5024{
4497 if (expect_false (ev_is_active (w))) 5025 if (ecb_expect_false (ev_is_active (w)))
4498 return; 5026 return;
4499 5027
4500 ev_stat_stat (EV_A_ w); 5028 ev_stat_stat (EV_A_ w);
4501 5029
4502 if (w->interval < MIN_STAT_INTERVAL && w->interval) 5030 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
4521 5049
4522 EV_FREQUENT_CHECK; 5050 EV_FREQUENT_CHECK;
4523} 5051}
4524 5052
4525void 5053void
4526ev_stat_stop (EV_P_ ev_stat *w) EV_THROW 5054ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
4527{ 5055{
4528 clear_pending (EV_A_ (W)w); 5056 clear_pending (EV_A_ (W)w);
4529 if (expect_false (!ev_is_active (w))) 5057 if (ecb_expect_false (!ev_is_active (w)))
4530 return; 5058 return;
4531 5059
4532 EV_FREQUENT_CHECK; 5060 EV_FREQUENT_CHECK;
4533 5061
4534#if EV_USE_INOTIFY 5062#if EV_USE_INOTIFY
… …
4547} 5075}
4548#endif 5076#endif
4549 5077
4550#if EV_IDLE_ENABLE 5078#if EV_IDLE_ENABLE
4551void 5079void
4552ev_idle_start (EV_P_ ev_idle *w) EV_THROW 5080ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
4553{ 5081{
4554 if (expect_false (ev_is_active (w))) 5082 if (ecb_expect_false (ev_is_active (w)))
4555 return; 5083 return;
4556 5084
4557 pri_adjust (EV_A_ (W)w); 5085 pri_adjust (EV_A_ (W)w);
4558 5086
4559 EV_FREQUENT_CHECK; 5087 EV_FREQUENT_CHECK;
… …
4562 int active = ++idlecnt [ABSPRI (w)]; 5090 int active = ++idlecnt [ABSPRI (w)];
4563 5091
4564 ++idleall; 5092 ++idleall;
4565 ev_start (EV_A_ (W)w, active); 5093 ev_start (EV_A_ (W)w, active);
4566 5094
4567 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);
4568 idles [ABSPRI (w)][active - 1] = w; 5096 idles [ABSPRI (w)][active - 1] = w;
4569 } 5097 }
4570 5098
4571 EV_FREQUENT_CHECK; 5099 EV_FREQUENT_CHECK;
4572} 5100}
4573 5101
4574void 5102void
4575ev_idle_stop (EV_P_ ev_idle *w) EV_THROW 5103ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
4576{ 5104{
4577 clear_pending (EV_A_ (W)w); 5105 clear_pending (EV_A_ (W)w);
4578 if (expect_false (!ev_is_active (w))) 5106 if (ecb_expect_false (!ev_is_active (w)))
4579 return; 5107 return;
4580 5108
4581 EV_FREQUENT_CHECK; 5109 EV_FREQUENT_CHECK;
4582 5110
4583 { 5111 {
… …
4594} 5122}
4595#endif 5123#endif
4596 5124
4597#if EV_PREPARE_ENABLE 5125#if EV_PREPARE_ENABLE
4598void 5126void
4599ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW 5127ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
4600{ 5128{
4601 if (expect_false (ev_is_active (w))) 5129 if (ecb_expect_false (ev_is_active (w)))
4602 return; 5130 return;
4603 5131
4604 EV_FREQUENT_CHECK; 5132 EV_FREQUENT_CHECK;
4605 5133
4606 ev_start (EV_A_ (W)w, ++preparecnt); 5134 ev_start (EV_A_ (W)w, ++preparecnt);
4607 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 5135 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
4608 prepares [preparecnt - 1] = w; 5136 prepares [preparecnt - 1] = w;
4609 5137
4610 EV_FREQUENT_CHECK; 5138 EV_FREQUENT_CHECK;
4611} 5139}
4612 5140
4613void 5141void
4614ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW 5142ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
4615{ 5143{
4616 clear_pending (EV_A_ (W)w); 5144 clear_pending (EV_A_ (W)w);
4617 if (expect_false (!ev_is_active (w))) 5145 if (ecb_expect_false (!ev_is_active (w)))
4618 return; 5146 return;
4619 5147
4620 EV_FREQUENT_CHECK; 5148 EV_FREQUENT_CHECK;
4621 5149
4622 { 5150 {
… …
4632} 5160}
4633#endif 5161#endif
4634 5162
4635#if EV_CHECK_ENABLE 5163#if EV_CHECK_ENABLE
4636void 5164void
4637ev_check_start (EV_P_ ev_check *w) EV_THROW 5165ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
4638{ 5166{
4639 if (expect_false (ev_is_active (w))) 5167 if (ecb_expect_false (ev_is_active (w)))
4640 return; 5168 return;
4641 5169
4642 EV_FREQUENT_CHECK; 5170 EV_FREQUENT_CHECK;
4643 5171
4644 ev_start (EV_A_ (W)w, ++checkcnt); 5172 ev_start (EV_A_ (W)w, ++checkcnt);
4645 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 5173 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
4646 checks [checkcnt - 1] = w; 5174 checks [checkcnt - 1] = w;
4647 5175
4648 EV_FREQUENT_CHECK; 5176 EV_FREQUENT_CHECK;
4649} 5177}
4650 5178
4651void 5179void
4652ev_check_stop (EV_P_ ev_check *w) EV_THROW 5180ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
4653{ 5181{
4654 clear_pending (EV_A_ (W)w); 5182 clear_pending (EV_A_ (W)w);
4655 if (expect_false (!ev_is_active (w))) 5183 if (ecb_expect_false (!ev_is_active (w)))
4656 return; 5184 return;
4657 5185
4658 EV_FREQUENT_CHECK; 5186 EV_FREQUENT_CHECK;
4659 5187
4660 { 5188 {
… …
4669 EV_FREQUENT_CHECK; 5197 EV_FREQUENT_CHECK;
4670} 5198}
4671#endif 5199#endif
4672 5200
4673#if EV_EMBED_ENABLE 5201#if EV_EMBED_ENABLE
4674void noinline 5202ecb_noinline
5203void
4675ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW 5204ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
4676{ 5205{
4677 ev_run (w->other, EVRUN_NOWAIT); 5206 ev_run (w->other, EVRUN_NOWAIT);
4678} 5207}
4679 5208
4680static void 5209static void
… …
4702 ev_run (EV_A_ EVRUN_NOWAIT); 5231 ev_run (EV_A_ EVRUN_NOWAIT);
4703 } 5232 }
4704 } 5233 }
4705} 5234}
4706 5235
5236#if EV_FORK_ENABLE
4707static void 5237static void
4708embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 5238embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
4709{ 5239{
4710 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));
4711 5241
… …
4718 ev_run (EV_A_ EVRUN_NOWAIT); 5248 ev_run (EV_A_ EVRUN_NOWAIT);
4719 } 5249 }
4720 5250
4721 ev_embed_start (EV_A_ w); 5251 ev_embed_start (EV_A_ w);
4722} 5252}
5253#endif
4723 5254
4724#if 0 5255#if 0
4725static void 5256static void
4726embed_idle_cb (EV_P_ ev_idle *idle, int revents) 5257embed_idle_cb (EV_P_ ev_idle *idle, int revents)
4727{ 5258{
4728 ev_idle_stop (EV_A_ idle); 5259 ev_idle_stop (EV_A_ idle);
4729} 5260}
4730#endif 5261#endif
4731 5262
4732void 5263void
4733ev_embed_start (EV_P_ ev_embed *w) EV_THROW 5264ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
4734{ 5265{
4735 if (expect_false (ev_is_active (w))) 5266 if (ecb_expect_false (ev_is_active (w)))
4736 return; 5267 return;
4737 5268
4738 { 5269 {
4739 EV_P = w->other; 5270 EV_P = w->other;
4740 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 ()));
… …
4748 5279
4749 ev_prepare_init (&w->prepare, embed_prepare_cb); 5280 ev_prepare_init (&w->prepare, embed_prepare_cb);
4750 ev_set_priority (&w->prepare, EV_MINPRI); 5281 ev_set_priority (&w->prepare, EV_MINPRI);
4751 ev_prepare_start (EV_A_ &w->prepare); 5282 ev_prepare_start (EV_A_ &w->prepare);
4752 5283
5284#if EV_FORK_ENABLE
4753 ev_fork_init (&w->fork, embed_fork_cb); 5285 ev_fork_init (&w->fork, embed_fork_cb);
4754 ev_fork_start (EV_A_ &w->fork); 5286 ev_fork_start (EV_A_ &w->fork);
5287#endif
4755 5288
4756 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 5289 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
4757 5290
4758 ev_start (EV_A_ (W)w, 1); 5291 ev_start (EV_A_ (W)w, 1);
4759 5292
4760 EV_FREQUENT_CHECK; 5293 EV_FREQUENT_CHECK;
4761} 5294}
4762 5295
4763void 5296void
4764ev_embed_stop (EV_P_ ev_embed *w) EV_THROW 5297ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
4765{ 5298{
4766 clear_pending (EV_A_ (W)w); 5299 clear_pending (EV_A_ (W)w);
4767 if (expect_false (!ev_is_active (w))) 5300 if (ecb_expect_false (!ev_is_active (w)))
4768 return; 5301 return;
4769 5302
4770 EV_FREQUENT_CHECK; 5303 EV_FREQUENT_CHECK;
4771 5304
4772 ev_io_stop (EV_A_ &w->io); 5305 ev_io_stop (EV_A_ &w->io);
4773 ev_prepare_stop (EV_A_ &w->prepare); 5306 ev_prepare_stop (EV_A_ &w->prepare);
5307#if EV_FORK_ENABLE
4774 ev_fork_stop (EV_A_ &w->fork); 5308 ev_fork_stop (EV_A_ &w->fork);
5309#endif
4775 5310
4776 ev_stop (EV_A_ (W)w); 5311 ev_stop (EV_A_ (W)w);
4777 5312
4778 EV_FREQUENT_CHECK; 5313 EV_FREQUENT_CHECK;
4779} 5314}
4780#endif 5315#endif
4781 5316
4782#if EV_FORK_ENABLE 5317#if EV_FORK_ENABLE
4783void 5318void
4784ev_fork_start (EV_P_ ev_fork *w) EV_THROW 5319ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
4785{ 5320{
4786 if (expect_false (ev_is_active (w))) 5321 if (ecb_expect_false (ev_is_active (w)))
4787 return; 5322 return;
4788 5323
4789 EV_FREQUENT_CHECK; 5324 EV_FREQUENT_CHECK;
4790 5325
4791 ev_start (EV_A_ (W)w, ++forkcnt); 5326 ev_start (EV_A_ (W)w, ++forkcnt);
4792 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5327 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
4793 forks [forkcnt - 1] = w; 5328 forks [forkcnt - 1] = w;
4794 5329
4795 EV_FREQUENT_CHECK; 5330 EV_FREQUENT_CHECK;
4796} 5331}
4797 5332
4798void 5333void
4799ev_fork_stop (EV_P_ ev_fork *w) EV_THROW 5334ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
4800{ 5335{
4801 clear_pending (EV_A_ (W)w); 5336 clear_pending (EV_A_ (W)w);
4802 if (expect_false (!ev_is_active (w))) 5337 if (ecb_expect_false (!ev_is_active (w)))
4803 return; 5338 return;
4804 5339
4805 EV_FREQUENT_CHECK; 5340 EV_FREQUENT_CHECK;
4806 5341
4807 { 5342 {
… …
4817} 5352}
4818#endif 5353#endif
4819 5354
4820#if EV_CLEANUP_ENABLE 5355#if EV_CLEANUP_ENABLE
4821void 5356void
4822ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW 5357ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4823{ 5358{
4824 if (expect_false (ev_is_active (w))) 5359 if (ecb_expect_false (ev_is_active (w)))
4825 return; 5360 return;
4826 5361
4827 EV_FREQUENT_CHECK; 5362 EV_FREQUENT_CHECK;
4828 5363
4829 ev_start (EV_A_ (W)w, ++cleanupcnt); 5364 ev_start (EV_A_ (W)w, ++cleanupcnt);
4830 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 5365 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
4831 cleanups [cleanupcnt - 1] = w; 5366 cleanups [cleanupcnt - 1] = w;
4832 5367
4833 /* cleanup watchers should never keep a refcount on the loop */ 5368 /* cleanup watchers should never keep a refcount on the loop */
4834 ev_unref (EV_A); 5369 ev_unref (EV_A);
4835 EV_FREQUENT_CHECK; 5370 EV_FREQUENT_CHECK;
4836} 5371}
4837 5372
4838void 5373void
4839ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW 5374ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4840{ 5375{
4841 clear_pending (EV_A_ (W)w); 5376 clear_pending (EV_A_ (W)w);
4842 if (expect_false (!ev_is_active (w))) 5377 if (ecb_expect_false (!ev_is_active (w)))
4843 return; 5378 return;
4844 5379
4845 EV_FREQUENT_CHECK; 5380 EV_FREQUENT_CHECK;
4846 ev_ref (EV_A); 5381 ev_ref (EV_A);
4847 5382
… …
4858} 5393}
4859#endif 5394#endif
4860 5395
4861#if EV_ASYNC_ENABLE 5396#if EV_ASYNC_ENABLE
4862void 5397void
4863ev_async_start (EV_P_ ev_async *w) EV_THROW 5398ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4864{ 5399{
4865 if (expect_false (ev_is_active (w))) 5400 if (ecb_expect_false (ev_is_active (w)))
4866 return; 5401 return;
4867 5402
4868 w->sent = 0; 5403 w->sent = 0;
4869 5404
4870 evpipe_init (EV_A); 5405 evpipe_init (EV_A);
4871 5406
4872 EV_FREQUENT_CHECK; 5407 EV_FREQUENT_CHECK;
4873 5408
4874 ev_start (EV_A_ (W)w, ++asynccnt); 5409 ev_start (EV_A_ (W)w, ++asynccnt);
4875 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5410 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
4876 asyncs [asynccnt - 1] = w; 5411 asyncs [asynccnt - 1] = w;
4877 5412
4878 EV_FREQUENT_CHECK; 5413 EV_FREQUENT_CHECK;
4879} 5414}
4880 5415
4881void 5416void
4882ev_async_stop (EV_P_ ev_async *w) EV_THROW 5417ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4883{ 5418{
4884 clear_pending (EV_A_ (W)w); 5419 clear_pending (EV_A_ (W)w);
4885 if (expect_false (!ev_is_active (w))) 5420 if (ecb_expect_false (!ev_is_active (w)))
4886 return; 5421 return;
4887 5422
4888 EV_FREQUENT_CHECK; 5423 EV_FREQUENT_CHECK;
4889 5424
4890 { 5425 {
… …
4898 5433
4899 EV_FREQUENT_CHECK; 5434 EV_FREQUENT_CHECK;
4900} 5435}
4901 5436
4902void 5437void
4903ev_async_send (EV_P_ ev_async *w) EV_THROW 5438ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
4904{ 5439{
4905 w->sent = 1; 5440 w->sent = 1;
4906 evpipe_write (EV_A_ &async_pending); 5441 evpipe_write (EV_A_ &async_pending);
4907} 5442}
4908#endif 5443#endif
… …
4945 5480
4946 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));
4947} 5482}
4948 5483
4949void 5484void
4950ev_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
4951{ 5486{
4952 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));
4953
4954 if (expect_false (!once))
4955 {
4956 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
4957 return;
4958 }
4959 5488
4960 once->cb = cb; 5489 once->cb = cb;
4961 once->arg = arg; 5490 once->arg = arg;
4962 5491
4963 ev_init (&once->io, once_cb_io); 5492 ev_init (&once->io, once_cb_io);
… …
4976} 5505}
4977 5506
4978/*****************************************************************************/ 5507/*****************************************************************************/
4979 5508
4980#if EV_WALK_ENABLE 5509#if EV_WALK_ENABLE
4981void ecb_cold 5510ecb_cold
5511void
4982ev_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
4983{ 5513{
4984 int i, j; 5514 int i, j;
4985 ev_watcher_list *wl, *wn; 5515 ev_watcher_list *wl, *wn;
4986 5516
4987 if (types & (EV_IO | EV_EMBED)) 5517 if (types & (EV_IO | EV_EMBED))

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