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Comparing libev/ev.c (file contents):
Revision 1.486 by root, Thu Oct 25 03:11:04 2018 UTC vs.
Revision 1.528 by root, Sat Jan 25 19:40:46 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
190# endif
191
165#endif 192#endif
166 193
167/* OS X, in its infinite idiocy, actually HARDCODES 194/* OS X, in its infinite idiocy, actually HARDCODES
168 * a limit of 1024 into their select. Where people have brains, 195 * a limit of 1024 into their select. Where people have brains,
169 * OS X engineers apparently have a vacuum. Or maybe they were 196 * OS X engineers apparently have a vacuum. Or maybe they were
… …
315 342
316#ifndef EV_USE_PORT 343#ifndef EV_USE_PORT
317# define EV_USE_PORT 0 344# define EV_USE_PORT 0
318#endif 345#endif
319 346
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
320#ifndef EV_USE_INOTIFY 363#ifndef EV_USE_INOTIFY
321# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 364# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
322# define EV_USE_INOTIFY EV_FEATURE_OS 365# define EV_USE_INOTIFY EV_FEATURE_OS
323# else 366# else
324# define EV_USE_INOTIFY 0 367# define EV_USE_INOTIFY 0
… …
344#ifndef EV_USE_SIGNALFD 387#ifndef EV_USE_SIGNALFD
345# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 388# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
346# define EV_USE_SIGNALFD EV_FEATURE_OS 389# define EV_USE_SIGNALFD EV_FEATURE_OS
347# else 390# else
348# define EV_USE_SIGNALFD 0 391# define EV_USE_SIGNALFD 0
392# endif
393#endif
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
349# endif 400# endif
350#endif 401#endif
351 402
352#if 0 /* debugging */ 403#if 0 /* debugging */
353# define EV_VERIFY 3 404# define EV_VERIFY 3
… …
389# include <sys/syscall.h> 440# include <sys/syscall.h>
390# ifdef SYS_clock_gettime 441# ifdef SYS_clock_gettime
391# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 442# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
392# undef EV_USE_MONOTONIC 443# undef EV_USE_MONOTONIC
393# define EV_USE_MONOTONIC 1 444# define EV_USE_MONOTONIC 1
445# define EV_NEED_SYSCALL 1
394# else 446# else
395# undef EV_USE_CLOCK_SYSCALL 447# undef EV_USE_CLOCK_SYSCALL
396# define EV_USE_CLOCK_SYSCALL 0 448# define EV_USE_CLOCK_SYSCALL 0
397# endif 449# endif
398#endif 450#endif
… …
412#if !EV_STAT_ENABLE 464#if !EV_STAT_ENABLE
413# undef EV_USE_INOTIFY 465# undef EV_USE_INOTIFY
414# define EV_USE_INOTIFY 0 466# define EV_USE_INOTIFY 0
415#endif 467#endif
416 468
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
417#if !EV_USE_NANOSLEEP 477#if !EV_USE_NANOSLEEP
418/* 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 */
419# if !defined _WIN32 && !defined __hpux 479# if !defined _WIN32 && !defined __hpux
420# 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
421# endif 506# endif
422#endif 507#endif
423 508
424#if EV_USE_INOTIFY 509#if EV_USE_INOTIFY
425# include <sys/statfs.h> 510# include <sys/statfs.h>
… …
430# define EV_USE_INOTIFY 0 515# define EV_USE_INOTIFY 0
431# endif 516# endif
432#endif 517#endif
433 518
434#if EV_USE_EVENTFD 519#if EV_USE_EVENTFD
435/* 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 */
436# include <stdint.h> 521# include <stdint.h>
437# ifndef EFD_NONBLOCK 522# ifndef EFD_NONBLOCK
438# define EFD_NONBLOCK O_NONBLOCK 523# define EFD_NONBLOCK O_NONBLOCK
439# endif 524# endif
440# ifndef EFD_CLOEXEC 525# ifndef EFD_CLOEXEC
… …
446# endif 531# endif
447EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags); 532EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
448#endif 533#endif
449 534
450#if EV_USE_SIGNALFD 535#if EV_USE_SIGNALFD
451/* 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 */
452# include <stdint.h> 537# include <stdint.h>
453# ifndef SFD_NONBLOCK 538# ifndef SFD_NONBLOCK
454# define SFD_NONBLOCK O_NONBLOCK 539# define SFD_NONBLOCK O_NONBLOCK
455# endif 540# endif
456# ifndef SFD_CLOEXEC 541# ifndef SFD_CLOEXEC
… …
458# define SFD_CLOEXEC O_CLOEXEC 543# define SFD_CLOEXEC O_CLOEXEC
459# else 544# else
460# define SFD_CLOEXEC 02000000 545# define SFD_CLOEXEC 02000000
461# endif 546# endif
462# endif 547# endif
463EV_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);
464 549
465struct signalfd_siginfo 550struct signalfd_siginfo
466{ 551{
467 uint32_t ssi_signo; 552 uint32_t ssi_signo;
468 char pad[128 - sizeof (uint32_t)]; 553 char pad[128 - sizeof (uint32_t)];
469}; 554};
470#endif 555#endif
471 556
472/**/ 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/*****************************************************************************/
473 568
474#if EV_VERIFY >= 3 569#if EV_VERIFY >= 3
475# define EV_FREQUENT_CHECK ev_verify (EV_A) 570# define EV_FREQUENT_CHECK ev_verify (EV_A)
476#else 571#else
477# define EV_FREQUENT_CHECK do { } while (0) 572# define EV_FREQUENT_CHECK do { } while (0)
… …
482 * This value is good at least till the year 4000. 577 * This value is good at least till the year 4000.
483 */ 578 */
484#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */ 579#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
485/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */ 580/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
486 581
487#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) */
488#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 */
489 585
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
490#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)
491#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
492 603
493/* 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 */
494/* ECB.H BEGIN */ 605/* ECB.H BEGIN */
495/* 606/*
496 * libecb - http://software.schmorp.de/pkg/libecb 607 * libecb - http://software.schmorp.de/pkg/libecb
497 * 608 *
498 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de> 609 * Copyright (©) 2009-2015,2018-2020 Marc Alexander Lehmann <libecb@schmorp.de>
499 * Copyright (©) 2011 Emanuele Giaquinta 610 * Copyright (©) 2011 Emanuele Giaquinta
500 * All rights reserved. 611 * All rights reserved.
501 * 612 *
502 * 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-
503 * tion, are permitted provided that the following conditions are met: 614 * tion, are permitted provided that the following conditions are met:
… …
534 645
535#ifndef ECB_H 646#ifndef ECB_H
536#define ECB_H 647#define ECB_H
537 648
538/* 16 bits major, 16 bits minor */ 649/* 16 bits major, 16 bits minor */
539#define ECB_VERSION 0x00010005 650#define ECB_VERSION 0x00010008
540 651
541#ifdef _WIN32 652#include <string.h> /* for memcpy */
653
654#if defined (_WIN32) && !defined (__MINGW32__)
542 typedef signed char int8_t; 655 typedef signed char int8_t;
543 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;
544 typedef signed short int16_t; 659 typedef signed short int16_t;
545 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;
546 typedef signed int int32_t; 663 typedef signed int int32_t;
547 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;
548 #if __GNUC__ 667 #if __GNUC__
549 typedef signed long long int64_t; 668 typedef signed long long int64_t;
550 typedef unsigned long long uint64_t; 669 typedef unsigned long long uint64_t;
551 #else /* _MSC_VER || __BORLANDC__ */ 670 #else /* _MSC_VER || __BORLANDC__ */
552 typedef signed __int64 int64_t; 671 typedef signed __int64 int64_t;
553 typedef unsigned __int64 uint64_t; 672 typedef unsigned __int64 uint64_t;
554 #endif 673 #endif
674 typedef int64_t int_fast64_t;
675 typedef uint64_t uint_fast64_t;
555 #ifdef _WIN64 676 #ifdef _WIN64
556 #define ECB_PTRSIZE 8 677 #define ECB_PTRSIZE 8
557 typedef uint64_t uintptr_t; 678 typedef uint64_t uintptr_t;
558 typedef int64_t intptr_t; 679 typedef int64_t intptr_t;
559 #else 680 #else
… …
571#endif 692#endif
572 693
573#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__) 694#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
574#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64) 695#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
575 696
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
576/* work around x32 idiocy by defining proper macros */ 705/* work around x32 idiocy by defining proper macros */
577#if ECB_GCC_AMD64 || ECB_MSVC_AMD64 706#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
578 #if _ILP32 707 #if _ILP32
579 #define ECB_AMD64_X32 1 708 #define ECB_AMD64_X32 1
580 #else 709 #else
… …
609 #define ECB_CLANG_EXTENSION(x) 0 738 #define ECB_CLANG_EXTENSION(x) 0
610#endif 739#endif
611 740
612#define ECB_CPP (__cplusplus+0) 741#define ECB_CPP (__cplusplus+0)
613#define ECB_CPP11 (__cplusplus >= 201103L) 742#define ECB_CPP11 (__cplusplus >= 201103L)
743#define ECB_CPP14 (__cplusplus >= 201402L)
744#define ECB_CPP17 (__cplusplus >= 201703L)
614 745
615#if ECB_CPP 746#if ECB_CPP
616 #define ECB_C 0 747 #define ECB_C 0
617 #define ECB_STDC_VERSION 0 748 #define ECB_STDC_VERSION 0
618#else 749#else
… …
620 #define ECB_STDC_VERSION __STDC_VERSION__ 751 #define ECB_STDC_VERSION __STDC_VERSION__
621#endif 752#endif
622 753
623#define ECB_C99 (ECB_STDC_VERSION >= 199901L) 754#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
624#define ECB_C11 (ECB_STDC_VERSION >= 201112L) 755#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
756#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
625 757
626#if ECB_CPP 758#if ECB_CPP
627 #define ECB_EXTERN_C extern "C" 759 #define ECB_EXTERN_C extern "C"
628 #define ECB_EXTERN_C_BEG ECB_EXTERN_C { 760 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
629 #define ECB_EXTERN_C_END } 761 #define ECB_EXTERN_C_END }
… …
655 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */ 787 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
656#endif 788#endif
657 789
658#ifndef ECB_MEMORY_FENCE 790#ifndef ECB_MEMORY_FENCE
659 #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")
660 #if __i386 || __i386__ 793 #if __i386 || __i386__
661 #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")
662 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") 795 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
663 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 796 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
664 #elif ECB_GCC_AMD64 797 #elif ECB_GCC_AMD64
665 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 798 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
666 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") 799 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
667 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 800 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
668 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 801 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
669 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 802 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
670 #elif defined __ARM_ARCH_2__ \ 803 #elif defined __ARM_ARCH_2__ \
671 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \ 804 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
672 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \ 805 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
… …
714 #if ECB_GCC_VERSION(4,7) 847 #if ECB_GCC_VERSION(4,7)
715 /* see comment below (stdatomic.h) about the C11 memory model. */ 848 /* see comment below (stdatomic.h) about the C11 memory model. */
716 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST) 849 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
717 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE) 850 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
718 #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)
719 853
720 #elif ECB_CLANG_EXTENSION(c_atomic) 854 #elif ECB_CLANG_EXTENSION(c_atomic)
721 /* see comment below (stdatomic.h) about the C11 memory model. */ 855 /* see comment below (stdatomic.h) about the C11 memory model. */
722 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) 856 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
723 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE) 857 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
724 #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)
725 860
726 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ 861 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
727 #define ECB_MEMORY_FENCE __sync_synchronize () 862 #define ECB_MEMORY_FENCE __sync_synchronize ()
728 #elif _MSC_VER >= 1500 /* VC++ 2008 */ 863 #elif _MSC_VER >= 1500 /* VC++ 2008 */
729 /* 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... */
… …
739 #elif defined _WIN32 874 #elif defined _WIN32
740 #include <WinNT.h> 875 #include <WinNT.h>
741 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ 876 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
742 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 877 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
743 #include <mbarrier.h> 878 #include <mbarrier.h>
744 #define ECB_MEMORY_FENCE __machine_rw_barrier () 879 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
745 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier () 880 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
746 #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 ()
747 #elif __xlC__ 883 #elif __xlC__
748 #define ECB_MEMORY_FENCE __sync () 884 #define ECB_MEMORY_FENCE __sync ()
749 #endif 885 #endif
750#endif 886#endif
751 887
752#ifndef ECB_MEMORY_FENCE 888#ifndef ECB_MEMORY_FENCE
753 #if ECB_C11 && !defined __STDC_NO_ATOMICS__ 889 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
754 /* 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, */
755 /* not just C11 atomics and atomic accesses */ 891 /* not just C11 atomics and atomic accesses */
756 #include <stdatomic.h> 892 #include <stdatomic.h>
757 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
758 /* any fence other than seq_cst, which isn't very efficient for us. */
759 /* Why that is, we don't know - either the C11 memory model is quite useless */
760 /* for most usages, or gcc and clang have a bug */
761 /* I *currently* lean towards the latter, and inefficiently implement */
762 /* all three of ecb's fences as a seq_cst fence */
763 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
764 /* for all __atomic_thread_fence's except seq_cst */
765 #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)
766 #endif 896 #endif
767#endif 897#endif
768 898
769#ifndef ECB_MEMORY_FENCE 899#ifndef ECB_MEMORY_FENCE
770 #if !ECB_AVOID_PTHREADS 900 #if !ECB_AVOID_PTHREADS
… …
788 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 918 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
789#endif 919#endif
790 920
791#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE 921#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
792 #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 */
793#endif 927#endif
794 928
795/*****************************************************************************/ 929/*****************************************************************************/
796 930
797#if ECB_CPP 931#if ECB_CPP
… …
1081ecb_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); }
1082ecb_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); }
1083ecb_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); }
1084ecb_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); }
1085 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
1086#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))
1087 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16) 1259 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1088 #define ecb_bswap16(x) __builtin_bswap16 (x) 1260 #define ecb_bswap16(x) __builtin_bswap16 (x)
1089 #else 1261 #else
1090 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 1262 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
… …
1161ecb_inline ecb_const ecb_bool ecb_big_endian (void); 1333ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1162ecb_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; }
1163ecb_inline ecb_const ecb_bool ecb_little_endian (void); 1335ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1164ecb_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; }
1165 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
1166#if ECB_GCC_VERSION(3,0) || ECB_C99 1410#if ECB_GCC_VERSION(3,0) || ECB_C99
1167 #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))
1168#else 1412#else
1169 #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)))
1170#endif 1414#endif
… …
1193 return N; 1437 return N;
1194 } 1438 }
1195#else 1439#else
1196 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1440 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1197#endif 1441#endif
1442
1443/*****************************************************************************/
1198 1444
1199ecb_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);
1200ecb_function_ ecb_const uint32_t 1446ecb_function_ ecb_const uint32_t
1201ecb_binary16_to_binary32 (uint32_t x) 1447ecb_binary16_to_binary32 (uint32_t x)
1202{ 1448{
… …
1311 || defined __sh__ \ 1557 || defined __sh__ \
1312 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \ 1558 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1313 || (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__)) \
1314 || defined __aarch64__ 1560 || defined __aarch64__
1315 #define ECB_STDFP 1 1561 #define ECB_STDFP 1
1316 #include <string.h> /* for memcpy */
1317#else 1562#else
1318 #define ECB_STDFP 0 1563 #define ECB_STDFP 0
1319#endif 1564#endif
1320 1565
1321#ifndef ECB_NO_LIBM 1566#ifndef ECB_NO_LIBM
… …
1506/* ECB.H END */ 1751/* ECB.H END */
1507 1752
1508#if ECB_MEMORY_FENCE_NEEDS_PTHREADS 1753#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1509/* 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
1510 * 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
1511 * 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
1512 * libev, in which cases the memory fences become nops. 1757 * libev, in which cases the memory fences become nops.
1513 * alternatively, you can remove this #error and link against libpthread, 1758 * alternatively, you can remove this #error and link against libpthread,
1514 * which will then provide the memory fences. 1759 * which will then provide the memory fences.
1515 */ 1760 */
1516# error "memory fences not defined for your architecture, please report" 1761# error "memory fences not defined for your architecture, please report"
… …
1520# define ECB_MEMORY_FENCE do { } while (0) 1765# define ECB_MEMORY_FENCE do { } while (0)
1521# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 1766# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1522# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 1767# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1523#endif 1768#endif
1524 1769
1525#define expect_false(cond) ecb_expect_false (cond)
1526#define expect_true(cond) ecb_expect_true (cond)
1527#define noinline ecb_noinline
1528
1529#define inline_size ecb_inline 1770#define inline_size ecb_inline
1530 1771
1531#if EV_FEATURE_CODE 1772#if EV_FEATURE_CODE
1532# define inline_speed ecb_inline 1773# define inline_speed ecb_inline
1533#else 1774#else
1534# define inline_speed noinline static 1775# define inline_speed ecb_noinline static
1535#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/*****************************************************************************/
1536 1843
1537#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1844#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
1538 1845
1539#if EV_MINPRI == EV_MAXPRI 1846#if EV_MINPRI == EV_MAXPRI
1540# define ABSPRI(w) (((W)w), 0) 1847# define ABSPRI(w) (((W)w), 0)
1541#else 1848#else
1542# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1849# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
1543#endif 1850#endif
1544 1851
1545#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1852#define EMPTY /* required for microsofts broken pseudo-c compiler */
1546#define EMPTY2(a,b) /* used to suppress some warnings */
1547 1853
1548typedef ev_watcher *W; 1854typedef ev_watcher *W;
1549typedef ev_watcher_list *WL; 1855typedef ev_watcher_list *WL;
1550typedef ev_watcher_time *WT; 1856typedef ev_watcher_time *WT;
1551 1857
… …
1576# include "ev_win32.c" 1882# include "ev_win32.c"
1577#endif 1883#endif
1578 1884
1579/*****************************************************************************/ 1885/*****************************************************************************/
1580 1886
1887#if EV_USE_LINUXAIO
1888# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1889#endif
1890
1581/* define a suitable floor function (only used by periodics atm) */ 1891/* define a suitable floor function (only used by periodics atm) */
1582 1892
1583#if EV_USE_FLOOR 1893#if EV_USE_FLOOR
1584# include <math.h> 1894# include <math.h>
1585# define ev_floor(v) floor (v) 1895# define ev_floor(v) floor (v)
1586#else 1896#else
1587 1897
1588#include <float.h> 1898#include <float.h>
1589 1899
1590/* a floor() replacement function, should be independent of ev_tstamp type */ 1900/* a floor() replacement function, should be independent of ev_tstamp type */
1591noinline 1901ecb_noinline
1592static ev_tstamp 1902static ev_tstamp
1593ev_floor (ev_tstamp v) 1903ev_floor (ev_tstamp v)
1594{ 1904{
1595 /* the choice of shift factor is not terribly important */ 1905 /* the choice of shift factor is not terribly important */
1596#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1906#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1597 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1907 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1598#else 1908#else
1599 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; 1909 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1600#endif 1910#endif
1601 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
1602 /* argument too large for an unsigned long? */ 1920 /* argument too large for an unsigned long? then reduce it */
1603 if (expect_false (v >= shift)) 1921 if (ecb_expect_false (v >= shift))
1604 { 1922 {
1605 ev_tstamp f; 1923 ev_tstamp f;
1606 1924
1607 if (v == v - 1.) 1925 if (v == v - 1.)
1608 return v; /* very large number */ 1926 return v; /* very large numbers are assumed to be integer */
1609 1927
1610 f = shift * ev_floor (v * (1. / shift)); 1928 f = shift * ev_floor (v * (1. / shift));
1611 return f + ev_floor (v - f); 1929 return f + ev_floor (v - f);
1612 } 1930 }
1613 1931
1614 /* special treatment for negative args? */
1615 if (expect_false (v < 0.))
1616 {
1617 ev_tstamp f = -ev_floor (-v);
1618
1619 return f - (f == v ? 0 : 1);
1620 }
1621
1622 /* fits into an unsigned long */ 1932 /* fits into an unsigned long */
1623 return (unsigned long)v; 1933 return (unsigned long)v;
1624} 1934}
1625 1935
1626#endif 1936#endif
… …
1629 1939
1630#ifdef __linux 1940#ifdef __linux
1631# include <sys/utsname.h> 1941# include <sys/utsname.h>
1632#endif 1942#endif
1633 1943
1634noinline ecb_cold 1944ecb_noinline ecb_cold
1635static unsigned int 1945static unsigned int
1636ev_linux_version (void) 1946ev_linux_version (void)
1637{ 1947{
1638#ifdef __linux 1948#ifdef __linux
1639 unsigned int v = 0; 1949 unsigned int v = 0;
… …
1669} 1979}
1670 1980
1671/*****************************************************************************/ 1981/*****************************************************************************/
1672 1982
1673#if EV_AVOID_STDIO 1983#if EV_AVOID_STDIO
1674noinline ecb_cold 1984ecb_noinline ecb_cold
1675static void 1985static void
1676ev_printerr (const char *msg) 1986ev_printerr (const char *msg)
1677{ 1987{
1678 write (STDERR_FILENO, msg, strlen (msg)); 1988 write (STDERR_FILENO, msg, strlen (msg));
1679} 1989}
… …
1686ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT 1996ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
1687{ 1997{
1688 syserr_cb = cb; 1998 syserr_cb = cb;
1689} 1999}
1690 2000
1691noinline ecb_cold 2001ecb_noinline ecb_cold
1692static void 2002static void
1693ev_syserr (const char *msg) 2003ev_syserr (const char *msg)
1694{ 2004{
1695 if (!msg) 2005 if (!msg)
1696 msg = "(libev) system error"; 2006 msg = "(libev) system error";
… …
1767typedef struct 2077typedef struct
1768{ 2078{
1769 WL head; 2079 WL head;
1770 unsigned char events; /* the events watched for */ 2080 unsigned char events; /* the events watched for */
1771 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) */
1772 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 */
1773 unsigned char unused; 2083 unsigned char eflags; /* flags field for use by backends */
1774#if EV_USE_EPOLL 2084#if EV_USE_EPOLL
1775 unsigned int egen; /* generation counter to counter epoll bugs */ 2085 unsigned int egen; /* generation counter to counter epoll bugs */
1776#endif 2086#endif
1777#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 2087#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1778 SOCKET handle; 2088 SOCKET handle;
… …
1832 static struct ev_loop default_loop_struct; 2142 static struct ev_loop default_loop_struct;
1833 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 */
1834 2144
1835#else 2145#else
1836 2146
1837 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 */
1838 #define VAR(name,decl) static decl; 2148 #define VAR(name,decl) static decl;
1839 #include "ev_vars.h" 2149 #include "ev_vars.h"
1840 #undef VAR 2150 #undef VAR
1841 2151
1842 static int ev_default_loop_ptr; 2152 static int ev_default_loop_ptr;
1843 2153
1844#endif 2154#endif
1845 2155
1846#if EV_FEATURE_API 2156#if EV_FEATURE_API
1847# 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)
1848# 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)
1849# define EV_INVOKE_PENDING invoke_cb (EV_A) 2159# define EV_INVOKE_PENDING invoke_cb (EV_A)
1850#else 2160#else
1851# define EV_RELEASE_CB (void)0 2161# define EV_RELEASE_CB (void)0
1852# define EV_ACQUIRE_CB (void)0 2162# define EV_ACQUIRE_CB (void)0
1853# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 2163# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
… …
1860#ifndef EV_HAVE_EV_TIME 2170#ifndef EV_HAVE_EV_TIME
1861ev_tstamp 2171ev_tstamp
1862ev_time (void) EV_NOEXCEPT 2172ev_time (void) EV_NOEXCEPT
1863{ 2173{
1864#if EV_USE_REALTIME 2174#if EV_USE_REALTIME
1865 if (expect_true (have_realtime)) 2175 if (ecb_expect_true (have_realtime))
1866 { 2176 {
1867 struct timespec ts; 2177 struct timespec ts;
1868 clock_gettime (CLOCK_REALTIME, &ts); 2178 clock_gettime (CLOCK_REALTIME, &ts);
1869 return ts.tv_sec + ts.tv_nsec * 1e-9; 2179 return EV_TS_GET (ts);
1870 } 2180 }
1871#endif 2181#endif
1872 2182
2183 {
1873 struct timeval tv; 2184 struct timeval tv;
1874 gettimeofday (&tv, 0); 2185 gettimeofday (&tv, 0);
1875 return tv.tv_sec + tv.tv_usec * 1e-6; 2186 return EV_TV_GET (tv);
2187 }
1876} 2188}
1877#endif 2189#endif
1878 2190
1879inline_size ev_tstamp 2191inline_size ev_tstamp
1880get_clock (void) 2192get_clock (void)
1881{ 2193{
1882#if EV_USE_MONOTONIC 2194#if EV_USE_MONOTONIC
1883 if (expect_true (have_monotonic)) 2195 if (ecb_expect_true (have_monotonic))
1884 { 2196 {
1885 struct timespec ts; 2197 struct timespec ts;
1886 clock_gettime (CLOCK_MONOTONIC, &ts); 2198 clock_gettime (CLOCK_MONOTONIC, &ts);
1887 return ts.tv_sec + ts.tv_nsec * 1e-9; 2199 return EV_TS_GET (ts);
1888 } 2200 }
1889#endif 2201#endif
1890 2202
1891 return ev_time (); 2203 return ev_time ();
1892} 2204}
… …
1900#endif 2212#endif
1901 2213
1902void 2214void
1903ev_sleep (ev_tstamp delay) EV_NOEXCEPT 2215ev_sleep (ev_tstamp delay) EV_NOEXCEPT
1904{ 2216{
1905 if (delay > 0.) 2217 if (delay > EV_TS_CONST (0.))
1906 { 2218 {
1907#if EV_USE_NANOSLEEP 2219#if EV_USE_NANOSLEEP
1908 struct timespec ts; 2220 struct timespec ts;
1909 2221
1910 EV_TS_SET (ts, delay); 2222 EV_TS_SET (ts, delay);
1911 nanosleep (&ts, 0); 2223 nanosleep (&ts, 0);
1912#elif defined _WIN32 2224#elif defined _WIN32
1913 /* maybe this should round up, as ms is very low resolution */ 2225 /* maybe this should round up, as ms is very low resolution */
1914 /* compared to select (µs) or nanosleep (ns) */ 2226 /* compared to select (µs) or nanosleep (ns) */
1915 Sleep ((unsigned long)(delay * 1e3)); 2227 Sleep ((unsigned long)(EV_TS_TO_MSEC (delay)));
1916#else 2228#else
1917 struct timeval tv; 2229 struct timeval tv;
1918 2230
1919 /* 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 */
1920 /* something not guaranteed by newer posix versions, but guaranteed */ 2232 /* something not guaranteed by newer posix versions, but guaranteed */
… …
1950 } 2262 }
1951 2263
1952 return ncur; 2264 return ncur;
1953} 2265}
1954 2266
1955noinline ecb_cold 2267ecb_noinline ecb_cold
1956static void * 2268static void *
1957array_realloc (int elem, void *base, int *cur, int cnt) 2269array_realloc (int elem, void *base, int *cur, int cnt)
1958{ 2270{
1959 *cur = array_nextsize (elem, *cur, cnt); 2271 *cur = array_nextsize (elem, *cur, cnt);
1960 return ev_realloc (base, elem * *cur); 2272 return ev_realloc (base, elem * *cur);
1961} 2273}
1962 2274
2275#define array_needsize_noinit(base,offset,count)
2276
1963#define array_init_zero(base,count) \ 2277#define array_needsize_zerofill(base,offset,count) \
1964 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2278 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
1965 2279
1966#define array_needsize(type,base,cur,cnt,init) \ 2280#define array_needsize(type,base,cur,cnt,init) \
1967 if (expect_false ((cnt) > (cur))) \ 2281 if (ecb_expect_false ((cnt) > (cur))) \
1968 { \ 2282 { \
1969 ecb_unused int ocur_ = (cur); \ 2283 ecb_unused int ocur_ = (cur); \
1970 (base) = (type *)array_realloc \ 2284 (base) = (type *)array_realloc \
1971 (sizeof (type), (base), &(cur), (cnt)); \ 2285 (sizeof (type), (base), &(cur), (cnt)); \
1972 init ((base) + (ocur_), (cur) - ocur_); \ 2286 init ((base), ocur_, ((cur) - ocur_)); \
1973 } 2287 }
1974 2288
1975#if 0 2289#if 0
1976#define array_slim(type,stem) \ 2290#define array_slim(type,stem) \
1977 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2291 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
1986 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
1987 2301
1988/*****************************************************************************/ 2302/*****************************************************************************/
1989 2303
1990/* dummy callback for pending events */ 2304/* dummy callback for pending events */
1991noinline 2305ecb_noinline
1992static void 2306static void
1993pendingcb (EV_P_ ev_prepare *w, int revents) 2307pendingcb (EV_P_ ev_prepare *w, int revents)
1994{ 2308{
1995} 2309}
1996 2310
1997noinline 2311ecb_noinline
1998void 2312void
1999ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT 2313ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
2000{ 2314{
2001 W w_ = (W)w; 2315 W w_ = (W)w;
2002 int pri = ABSPRI (w_); 2316 int pri = ABSPRI (w_);
2003 2317
2004 if (expect_false (w_->pending)) 2318 if (ecb_expect_false (w_->pending))
2005 pendings [pri][w_->pending - 1].events |= revents; 2319 pendings [pri][w_->pending - 1].events |= revents;
2006 else 2320 else
2007 { 2321 {
2008 w_->pending = ++pendingcnt [pri]; 2322 w_->pending = ++pendingcnt [pri];
2009 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2323 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
2010 pendings [pri][w_->pending - 1].w = w_; 2324 pendings [pri][w_->pending - 1].w = w_;
2011 pendings [pri][w_->pending - 1].events = revents; 2325 pendings [pri][w_->pending - 1].events = revents;
2012 } 2326 }
2013 2327
2014 pendingpri = NUMPRI - 1; 2328 pendingpri = NUMPRI - 1;
2015} 2329}
2016 2330
2017inline_speed void 2331inline_speed void
2018feed_reverse (EV_P_ W w) 2332feed_reverse (EV_P_ W w)
2019{ 2333{
2020 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2334 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
2021 rfeeds [rfeedcnt++] = w; 2335 rfeeds [rfeedcnt++] = w;
2022} 2336}
2023 2337
2024inline_size void 2338inline_size void
2025feed_reverse_done (EV_P_ int revents) 2339feed_reverse_done (EV_P_ int revents)
… …
2060inline_speed void 2374inline_speed void
2061fd_event (EV_P_ int fd, int revents) 2375fd_event (EV_P_ int fd, int revents)
2062{ 2376{
2063 ANFD *anfd = anfds + fd; 2377 ANFD *anfd = anfds + fd;
2064 2378
2065 if (expect_true (!anfd->reify)) 2379 if (ecb_expect_true (!anfd->reify))
2066 fd_event_nocheck (EV_A_ fd, revents); 2380 fd_event_nocheck (EV_A_ fd, revents);
2067} 2381}
2068 2382
2069void 2383void
2070ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT 2384ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
… …
2078inline_size void 2392inline_size void
2079fd_reify (EV_P) 2393fd_reify (EV_P)
2080{ 2394{
2081 int i; 2395 int i;
2082 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
2083#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 2409#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
2084 for (i = 0; i < fdchangecnt; ++i) 2410 for (i = 0; i < changecnt; ++i)
2085 { 2411 {
2086 int fd = fdchanges [i]; 2412 int fd = fdchanges [i];
2087 ANFD *anfd = anfds + fd; 2413 ANFD *anfd = anfds + fd;
2088 2414
2089 if (anfd->reify & EV__IOFDSET && anfd->head) 2415 if (anfd->reify & EV__IOFDSET && anfd->head)
… …
2103 } 2429 }
2104 } 2430 }
2105 } 2431 }
2106#endif 2432#endif
2107 2433
2108 for (i = 0; i < fdchangecnt; ++i) 2434 for (i = 0; i < changecnt; ++i)
2109 { 2435 {
2110 int fd = fdchanges [i]; 2436 int fd = fdchanges [i];
2111 ANFD *anfd = anfds + fd; 2437 ANFD *anfd = anfds + fd;
2112 ev_io *w; 2438 ev_io *w;
2113 2439
2114 unsigned char o_events = anfd->events; 2440 unsigned char o_events = anfd->events;
2115 unsigned char o_reify = anfd->reify; 2441 unsigned char o_reify = anfd->reify;
2116 2442
2117 anfd->reify = 0; 2443 anfd->reify = 0;
2118 2444
2119 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 2445 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
2120 { 2446 {
2121 anfd->events = 0; 2447 anfd->events = 0;
2122 2448
2123 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)
2124 anfd->events |= (unsigned char)w->events; 2450 anfd->events |= (unsigned char)w->events;
… …
2129 2455
2130 if (o_reify & EV__IOFDSET) 2456 if (o_reify & EV__IOFDSET)
2131 backend_modify (EV_A_ fd, o_events, anfd->events); 2457 backend_modify (EV_A_ fd, o_events, anfd->events);
2132 } 2458 }
2133 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
2134 fdchangecnt = 0; 2467 fdchangecnt -= changecnt;
2135} 2468}
2136 2469
2137/* something about the given fd changed */ 2470/* something about the given fd changed */
2138inline_size 2471inline_size
2139void 2472void
2140fd_change (EV_P_ int fd, int flags) 2473fd_change (EV_P_ int fd, int flags)
2141{ 2474{
2142 unsigned char reify = anfds [fd].reify; 2475 unsigned char reify = anfds [fd].reify;
2143 anfds [fd].reify |= flags; 2476 anfds [fd].reify = reify | flags;
2144 2477
2145 if (expect_true (!reify)) 2478 if (ecb_expect_true (!reify))
2146 { 2479 {
2147 ++fdchangecnt; 2480 ++fdchangecnt;
2148 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2481 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
2149 fdchanges [fdchangecnt - 1] = fd; 2482 fdchanges [fdchangecnt - 1] = fd;
2150 } 2483 }
2151} 2484}
2152 2485
2153/* 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 */
… …
2173 return fcntl (fd, F_GETFD) != -1; 2506 return fcntl (fd, F_GETFD) != -1;
2174#endif 2507#endif
2175} 2508}
2176 2509
2177/* called on EBADF to verify fds */ 2510/* called on EBADF to verify fds */
2178noinline ecb_cold 2511ecb_noinline ecb_cold
2179static void 2512static void
2180fd_ebadf (EV_P) 2513fd_ebadf (EV_P)
2181{ 2514{
2182 int fd; 2515 int fd;
2183 2516
… …
2186 if (!fd_valid (fd) && errno == EBADF) 2519 if (!fd_valid (fd) && errno == EBADF)
2187 fd_kill (EV_A_ fd); 2520 fd_kill (EV_A_ fd);
2188} 2521}
2189 2522
2190/* 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 */
2191noinline ecb_cold 2524ecb_noinline ecb_cold
2192static void 2525static void
2193fd_enomem (EV_P) 2526fd_enomem (EV_P)
2194{ 2527{
2195 int fd; 2528 int fd;
2196 2529
… …
2201 break; 2534 break;
2202 } 2535 }
2203} 2536}
2204 2537
2205/* 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 */
2206noinline 2539ecb_noinline
2207static void 2540static void
2208fd_rearm_all (EV_P) 2541fd_rearm_all (EV_P)
2209{ 2542{
2210 int fd; 2543 int fd;
2211 2544
… …
2265 ev_tstamp minat; 2598 ev_tstamp minat;
2266 ANHE *minpos; 2599 ANHE *minpos;
2267 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2600 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
2268 2601
2269 /* find minimum child */ 2602 /* find minimum child */
2270 if (expect_true (pos + DHEAP - 1 < E)) 2603 if (ecb_expect_true (pos + DHEAP - 1 < E))
2271 { 2604 {
2272 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2605 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
2273 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));
2274 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));
2275 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));
2276 } 2609 }
2277 else if (pos < E) 2610 else if (pos < E)
2278 { 2611 {
2279 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2612 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
2280 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));
2281 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));
2282 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));
2283 } 2616 }
2284 else 2617 else
2285 break; 2618 break;
2286 2619
2287 if (ANHE_at (he) <= minat) 2620 if (ANHE_at (he) <= minat)
… …
2295 2628
2296 heap [k] = he; 2629 heap [k] = he;
2297 ev_active (ANHE_w (he)) = k; 2630 ev_active (ANHE_w (he)) = k;
2298} 2631}
2299 2632
2300#else /* 4HEAP */ 2633#else /* not 4HEAP */
2301 2634
2302#define HEAP0 1 2635#define HEAP0 1
2303#define HPARENT(k) ((k) >> 1) 2636#define HPARENT(k) ((k) >> 1)
2304#define UPHEAP_DONE(p,k) (!(p)) 2637#define UPHEAP_DONE(p,k) (!(p))
2305 2638
… …
2377 upheap (heap, i + HEAP0); 2710 upheap (heap, i + HEAP0);
2378} 2711}
2379 2712
2380/*****************************************************************************/ 2713/*****************************************************************************/
2381 2714
2382/* associate signal watchers to a signal signal */ 2715/* associate signal watchers to a signal */
2383typedef struct 2716typedef struct
2384{ 2717{
2385 EV_ATOMIC_T pending; 2718 EV_ATOMIC_T pending;
2386#if EV_MULTIPLICITY 2719#if EV_MULTIPLICITY
2387 EV_P; 2720 EV_P;
… …
2393 2726
2394/*****************************************************************************/ 2727/*****************************************************************************/
2395 2728
2396#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2729#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2397 2730
2398noinline ecb_cold 2731ecb_noinline ecb_cold
2399static void 2732static void
2400evpipe_init (EV_P) 2733evpipe_init (EV_P)
2401{ 2734{
2402 if (!ev_is_active (&pipe_w)) 2735 if (!ev_is_active (&pipe_w))
2403 { 2736 {
… …
2444inline_speed void 2777inline_speed void
2445evpipe_write (EV_P_ EV_ATOMIC_T *flag) 2778evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2446{ 2779{
2447 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 */
2448 2781
2449 if (expect_true (*flag)) 2782 if (ecb_expect_true (*flag))
2450 return; 2783 return;
2451 2784
2452 *flag = 1; 2785 *flag = 1;
2453 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 */
2454 2787
… …
2531 sig_pending = 0; 2864 sig_pending = 0;
2532 2865
2533 ECB_MEMORY_FENCE; 2866 ECB_MEMORY_FENCE;
2534 2867
2535 for (i = EV_NSIG - 1; i--; ) 2868 for (i = EV_NSIG - 1; i--; )
2536 if (expect_false (signals [i].pending)) 2869 if (ecb_expect_false (signals [i].pending))
2537 ev_feed_signal_event (EV_A_ i + 1); 2870 ev_feed_signal_event (EV_A_ i + 1);
2538 } 2871 }
2539#endif 2872#endif
2540 2873
2541#if EV_ASYNC_ENABLE 2874#if EV_ASYNC_ENABLE
… …
2582#endif 2915#endif
2583 2916
2584 ev_feed_signal (signum); 2917 ev_feed_signal (signum);
2585} 2918}
2586 2919
2587noinline 2920ecb_noinline
2588void 2921void
2589ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT 2922ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
2590{ 2923{
2591 WL w; 2924 WL w;
2592 2925
2593 if (expect_false (signum <= 0 || signum >= EV_NSIG)) 2926 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
2594 return; 2927 return;
2595 2928
2596 --signum; 2929 --signum;
2597 2930
2598#if EV_MULTIPLICITY 2931#if EV_MULTIPLICITY
2599 /* 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 */
2600 /* or, likely more useful, feeding a signal nobody is waiting for */ 2933 /* or, likely more useful, feeding a signal nobody is waiting for */
2601 2934
2602 if (expect_false (signals [signum].loop != EV_A)) 2935 if (ecb_expect_false (signals [signum].loop != EV_A))
2603 return; 2936 return;
2604#endif 2937#endif
2605 2938
2606 signals [signum].pending = 0; 2939 signals [signum].pending = 0;
2607 ECB_MEMORY_FENCE_RELEASE; 2940 ECB_MEMORY_FENCE_RELEASE;
… …
2691 3024
2692#endif 3025#endif
2693 3026
2694/*****************************************************************************/ 3027/*****************************************************************************/
2695 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
2696#if EV_USE_IOCP 3080#if EV_USE_IOCP
2697# include "ev_iocp.c" 3081# include "ev_iocp.c"
2698#endif 3082#endif
2699#if EV_USE_PORT 3083#if EV_USE_PORT
2700# include "ev_port.c" 3084# include "ev_port.c"
… …
2702#if EV_USE_KQUEUE 3086#if EV_USE_KQUEUE
2703# include "ev_kqueue.c" 3087# include "ev_kqueue.c"
2704#endif 3088#endif
2705#if EV_USE_EPOLL 3089#if EV_USE_EPOLL
2706# include "ev_epoll.c" 3090# include "ev_epoll.c"
3091#endif
3092#if EV_USE_LINUXAIO
3093# include "ev_linuxaio.c"
3094#endif
3095#if EV_USE_IOURING
3096# include "ev_iouring.c"
2707#endif 3097#endif
2708#if EV_USE_POLL 3098#if EV_USE_POLL
2709# include "ev_poll.c" 3099# include "ev_poll.c"
2710#endif 3100#endif
2711#if EV_USE_SELECT 3101#if EV_USE_SELECT
… …
2740unsigned int 3130unsigned int
2741ev_supported_backends (void) EV_NOEXCEPT 3131ev_supported_backends (void) EV_NOEXCEPT
2742{ 3132{
2743 unsigned int flags = 0; 3133 unsigned int flags = 0;
2744 3134
2745 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 3135 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2746 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 3136 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
2747 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 3137 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2748 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 3138 if (EV_USE_LINUXAIO ) flags |= EVBACKEND_LINUXAIO;
2749 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 3139 if (EV_USE_IOURING && ev_linux_version () >= 0x050601) flags |= EVBACKEND_IOURING; /* 5.6.1+ */
2750 3140 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
3141 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
3142
2751 return flags; 3143 return flags;
2752} 3144}
2753 3145
2754ecb_cold 3146ecb_cold
2755unsigned int 3147unsigned int
… …
2769#endif 3161#endif
2770#ifdef __FreeBSD__ 3162#ifdef __FreeBSD__
2771 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) */
2772#endif 3164#endif
2773 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
2774 return flags; 3175 return flags;
2775} 3176}
2776 3177
2777ecb_cold 3178ecb_cold
2778unsigned int 3179unsigned int
2779ev_embeddable_backends (void) EV_NOEXCEPT 3180ev_embeddable_backends (void) EV_NOEXCEPT
2780{ 3181{
2781 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 3182 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT | EVBACKEND_IOURING;
2782 3183
2783 /* 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 */
2784 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 */
2785 flags &= ~EVBACKEND_EPOLL; 3186 flags &= ~EVBACKEND_EPOLL;
2786 3187
3188 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
3189
2787 return flags; 3190 return flags;
2788} 3191}
2789 3192
2790unsigned int 3193unsigned int
2791ev_backend (EV_P) EV_NOEXCEPT 3194ev_backend (EV_P) EV_NOEXCEPT
… …
2843 acquire_cb = acquire; 3246 acquire_cb = acquire;
2844} 3247}
2845#endif 3248#endif
2846 3249
2847/* initialise a loop structure, must be zero-initialised */ 3250/* initialise a loop structure, must be zero-initialised */
2848noinline ecb_cold 3251ecb_noinline ecb_cold
2849static void 3252static void
2850loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT 3253loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
2851{ 3254{
2852 if (!backend) 3255 if (!backend)
2853 { 3256 {
… …
2908 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3311 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2909#endif 3312#endif
2910#if EV_USE_SIGNALFD 3313#if EV_USE_SIGNALFD
2911 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 3314 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2912#endif 3315#endif
3316#if EV_USE_TIMERFD
3317 timerfd = flags & EVFLAG_NOTIMERFD ? -1 : -2;
3318#endif
2913 3319
2914 if (!(flags & EVBACKEND_MASK)) 3320 if (!(flags & EVBACKEND_MASK))
2915 flags |= ev_recommended_backends (); 3321 flags |= ev_recommended_backends ();
2916 3322
2917#if EV_USE_IOCP 3323#if EV_USE_IOCP
2918 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 3324 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2919#endif 3325#endif
2920#if EV_USE_PORT 3326#if EV_USE_PORT
2921 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3327 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
2922#endif 3328#endif
2923#if EV_USE_KQUEUE 3329#if EV_USE_KQUEUE
2924 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);
2925#endif 3337#endif
2926#if EV_USE_EPOLL 3338#if EV_USE_EPOLL
2927 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3339 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
2928#endif 3340#endif
2929#if EV_USE_POLL 3341#if EV_USE_POLL
2930 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3342 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
2931#endif 3343#endif
2932#if EV_USE_SELECT 3344#if EV_USE_SELECT
2933 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3345 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
2934#endif 3346#endif
2935 3347
2936 ev_prepare_init (&pending_w, pendingcb); 3348 ev_prepare_init (&pending_w, pendingcb);
2937 3349
2938#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3350#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
2955 return; 3367 return;
2956#endif 3368#endif
2957 3369
2958#if EV_CLEANUP_ENABLE 3370#if EV_CLEANUP_ENABLE
2959 /* queue cleanup watchers (and execute them) */ 3371 /* queue cleanup watchers (and execute them) */
2960 if (expect_false (cleanupcnt)) 3372 if (ecb_expect_false (cleanupcnt))
2961 { 3373 {
2962 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); 3374 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2963 EV_INVOKE_PENDING; 3375 EV_INVOKE_PENDING;
2964 } 3376 }
2965#endif 3377#endif
… …
2984#if EV_USE_SIGNALFD 3396#if EV_USE_SIGNALFD
2985 if (ev_is_active (&sigfd_w)) 3397 if (ev_is_active (&sigfd_w))
2986 close (sigfd); 3398 close (sigfd);
2987#endif 3399#endif
2988 3400
3401#if EV_USE_TIMERFD
3402 if (ev_is_active (&timerfd_w))
3403 close (timerfd);
3404#endif
3405
2989#if EV_USE_INOTIFY 3406#if EV_USE_INOTIFY
2990 if (fs_fd >= 0) 3407 if (fs_fd >= 0)
2991 close (fs_fd); 3408 close (fs_fd);
2992#endif 3409#endif
2993 3410
2994 if (backend_fd >= 0) 3411 if (backend_fd >= 0)
2995 close (backend_fd); 3412 close (backend_fd);
2996 3413
2997#if EV_USE_IOCP 3414#if EV_USE_IOCP
2998 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3415 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2999#endif 3416#endif
3000#if EV_USE_PORT 3417#if EV_USE_PORT
3001 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3418 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
3002#endif 3419#endif
3003#if EV_USE_KQUEUE 3420#if EV_USE_KQUEUE
3004 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);
3005#endif 3428#endif
3006#if EV_USE_EPOLL 3429#if EV_USE_EPOLL
3007 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3430 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
3008#endif 3431#endif
3009#if EV_USE_POLL 3432#if EV_USE_POLL
3010 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3433 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
3011#endif 3434#endif
3012#if EV_USE_SELECT 3435#if EV_USE_SELECT
3013 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3436 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
3014#endif 3437#endif
3015 3438
3016 for (i = NUMPRI; i--; ) 3439 for (i = NUMPRI; i--; )
3017 { 3440 {
3018 array_free (pending, [i]); 3441 array_free (pending, [i]);
… …
3060 3483
3061inline_size void 3484inline_size void
3062loop_fork (EV_P) 3485loop_fork (EV_P)
3063{ 3486{
3064#if EV_USE_PORT 3487#if EV_USE_PORT
3065 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3488 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
3066#endif 3489#endif
3067#if EV_USE_KQUEUE 3490#if EV_USE_KQUEUE
3068 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);
3069#endif 3498#endif
3070#if EV_USE_EPOLL 3499#if EV_USE_EPOLL
3071 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3500 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
3072#endif 3501#endif
3073#if EV_USE_INOTIFY 3502#if EV_USE_INOTIFY
3074 infy_fork (EV_A); 3503 infy_fork (EV_A);
3075#endif 3504#endif
3076 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
3077#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3527 #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
3078 if (ev_is_active (&pipe_w) && postfork != 2) 3528 if (ev_is_active (&pipe_w))
3079 { 3529 {
3080 /* 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 */
3081 3531
3082 ev_ref (EV_A); 3532 ev_ref (EV_A);
3083 ev_io_stop (EV_A_ &pipe_w); 3533 ev_io_stop (EV_A_ &pipe_w);
3084 3534
3085 if (evpipe [0] >= 0) 3535 if (evpipe [0] >= 0)
3086 EV_WIN32_CLOSE_FD (evpipe [0]); 3536 EV_WIN32_CLOSE_FD (evpipe [0]);
3087 3537
3088 evpipe_init (EV_A); 3538 evpipe_init (EV_A);
3089 /* iterate over everything, in case we missed something before */ 3539 /* iterate over everything, in case we missed something before */
3090 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3540 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3541 }
3542 #endif
3091 } 3543 }
3092#endif
3093 3544
3094 postfork = 0; 3545 postfork = 0;
3095} 3546}
3096 3547
3097#if EV_MULTIPLICITY 3548#if EV_MULTIPLICITY
… …
3113} 3564}
3114 3565
3115#endif /* multiplicity */ 3566#endif /* multiplicity */
3116 3567
3117#if EV_VERIFY 3568#if EV_VERIFY
3118noinline ecb_cold 3569ecb_noinline ecb_cold
3119static void 3570static void
3120verify_watcher (EV_P_ W w) 3571verify_watcher (EV_P_ W w)
3121{ 3572{
3122 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));
3123 3574
3124 if (w->pending) 3575 if (w->pending)
3125 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));
3126} 3577}
3127 3578
3128noinline ecb_cold 3579ecb_noinline ecb_cold
3129static void 3580static void
3130verify_heap (EV_P_ ANHE *heap, int N) 3581verify_heap (EV_P_ ANHE *heap, int N)
3131{ 3582{
3132 int i; 3583 int i;
3133 3584
… …
3139 3590
3140 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3591 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
3141 } 3592 }
3142} 3593}
3143 3594
3144noinline ecb_cold 3595ecb_noinline ecb_cold
3145static void 3596static void
3146array_verify (EV_P_ W *ws, int cnt) 3597array_verify (EV_P_ W *ws, int cnt)
3147{ 3598{
3148 while (cnt--) 3599 while (cnt--)
3149 { 3600 {
… …
3298 count += pendingcnt [pri]; 3749 count += pendingcnt [pri];
3299 3750
3300 return count; 3751 return count;
3301} 3752}
3302 3753
3303noinline 3754ecb_noinline
3304void 3755void
3305ev_invoke_pending (EV_P) 3756ev_invoke_pending (EV_P)
3306{ 3757{
3307 pendingpri = NUMPRI; 3758 pendingpri = NUMPRI;
3308 3759
… …
3327/* make idle watchers pending. this handles the "call-idle */ 3778/* make idle watchers pending. this handles the "call-idle */
3328/* only when higher priorities are idle" logic */ 3779/* only when higher priorities are idle" logic */
3329inline_size void 3780inline_size void
3330idle_reify (EV_P) 3781idle_reify (EV_P)
3331{ 3782{
3332 if (expect_false (idleall)) 3783 if (ecb_expect_false (idleall))
3333 { 3784 {
3334 int pri; 3785 int pri;
3335 3786
3336 for (pri = NUMPRI; pri--; ) 3787 for (pri = NUMPRI; pri--; )
3337 { 3788 {
… …
3367 { 3818 {
3368 ev_at (w) += w->repeat; 3819 ev_at (w) += w->repeat;
3369 if (ev_at (w) < mn_now) 3820 if (ev_at (w) < mn_now)
3370 ev_at (w) = mn_now; 3821 ev_at (w) = mn_now;
3371 3822
3372 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.)));
3373 3824
3374 ANHE_at_cache (timers [HEAP0]); 3825 ANHE_at_cache (timers [HEAP0]);
3375 downheap (timers, timercnt, HEAP0); 3826 downheap (timers, timercnt, HEAP0);
3376 } 3827 }
3377 else 3828 else
… …
3386 } 3837 }
3387} 3838}
3388 3839
3389#if EV_PERIODIC_ENABLE 3840#if EV_PERIODIC_ENABLE
3390 3841
3391noinline 3842ecb_noinline
3392static void 3843static void
3393periodic_recalc (EV_P_ ev_periodic *w) 3844periodic_recalc (EV_P_ ev_periodic *w)
3394{ 3845{
3395 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3846 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3396 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);
… …
3399 while (at <= ev_rt_now) 3850 while (at <= ev_rt_now)
3400 { 3851 {
3401 ev_tstamp nat = at + w->interval; 3852 ev_tstamp nat = at + w->interval;
3402 3853
3403 /* when resolution fails us, we use ev_rt_now */ 3854 /* when resolution fails us, we use ev_rt_now */
3404 if (expect_false (nat == at)) 3855 if (ecb_expect_false (nat == at))
3405 { 3856 {
3406 at = ev_rt_now; 3857 at = ev_rt_now;
3407 break; 3858 break;
3408 } 3859 }
3409 3860
… …
3455 } 3906 }
3456} 3907}
3457 3908
3458/* simply recalculate all periodics */ 3909/* simply recalculate all periodics */
3459/* 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? */
3460noinline ecb_cold 3911ecb_noinline ecb_cold
3461static void 3912static void
3462periodics_reschedule (EV_P) 3913periodics_reschedule (EV_P)
3463{ 3914{
3464 int i; 3915 int i;
3465 3916
… …
3479 reheap (periodics, periodiccnt); 3930 reheap (periodics, periodiccnt);
3480} 3931}
3481#endif 3932#endif
3482 3933
3483/* adjust all timers by a given offset */ 3934/* adjust all timers by a given offset */
3484noinline ecb_cold 3935ecb_noinline ecb_cold
3485static void 3936static void
3486timers_reschedule (EV_P_ ev_tstamp adjust) 3937timers_reschedule (EV_P_ ev_tstamp adjust)
3487{ 3938{
3488 int i; 3939 int i;
3489 3940
… …
3499/* also detect if there was a timejump, and act accordingly */ 3950/* also detect if there was a timejump, and act accordingly */
3500inline_speed void 3951inline_speed void
3501time_update (EV_P_ ev_tstamp max_block) 3952time_update (EV_P_ ev_tstamp max_block)
3502{ 3953{
3503#if EV_USE_MONOTONIC 3954#if EV_USE_MONOTONIC
3504 if (expect_true (have_monotonic)) 3955 if (ecb_expect_true (have_monotonic))
3505 { 3956 {
3506 int i; 3957 int i;
3507 ev_tstamp odiff = rtmn_diff; 3958 ev_tstamp odiff = rtmn_diff;
3508 3959
3509 mn_now = get_clock (); 3960 mn_now = get_clock ();
3510 3961
3511 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3962 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
3512 /* interpolate in the meantime */ 3963 /* interpolate in the meantime */
3513 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)))
3514 { 3965 {
3515 ev_rt_now = rtmn_diff + mn_now; 3966 ev_rt_now = rtmn_diff + mn_now;
3516 return; 3967 return;
3517 } 3968 }
3518 3969
… …
3532 ev_tstamp diff; 3983 ev_tstamp diff;
3533 rtmn_diff = ev_rt_now - mn_now; 3984 rtmn_diff = ev_rt_now - mn_now;
3534 3985
3535 diff = odiff - rtmn_diff; 3986 diff = odiff - rtmn_diff;
3536 3987
3537 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)))
3538 return; /* all is well */ 3989 return; /* all is well */
3539 3990
3540 ev_rt_now = ev_time (); 3991 ev_rt_now = ev_time ();
3541 mn_now = get_clock (); 3992 mn_now = get_clock ();
3542 now_floor = mn_now; 3993 now_floor = mn_now;
… …
3551 else 4002 else
3552#endif 4003#endif
3553 { 4004 {
3554 ev_rt_now = ev_time (); 4005 ev_rt_now = ev_time ();
3555 4006
3556 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)))
3557 { 4008 {
3558 /* 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 */
3559 timers_reschedule (EV_A_ ev_rt_now - mn_now); 4010 timers_reschedule (EV_A_ ev_rt_now - mn_now);
3560#if EV_PERIODIC_ENABLE 4011#if EV_PERIODIC_ENABLE
3561 periodics_reschedule (EV_A); 4012 periodics_reschedule (EV_A);
… …
3584#if EV_VERIFY >= 2 4035#if EV_VERIFY >= 2
3585 ev_verify (EV_A); 4036 ev_verify (EV_A);
3586#endif 4037#endif
3587 4038
3588#ifndef _WIN32 4039#ifndef _WIN32
3589 if (expect_false (curpid)) /* penalise the forking check even more */ 4040 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
3590 if (expect_false (getpid () != curpid)) 4041 if (ecb_expect_false (getpid () != curpid))
3591 { 4042 {
3592 curpid = getpid (); 4043 curpid = getpid ();
3593 postfork = 1; 4044 postfork = 1;
3594 } 4045 }
3595#endif 4046#endif
3596 4047
3597#if EV_FORK_ENABLE 4048#if EV_FORK_ENABLE
3598 /* we might have forked, so queue fork handlers */ 4049 /* we might have forked, so queue fork handlers */
3599 if (expect_false (postfork)) 4050 if (ecb_expect_false (postfork))
3600 if (forkcnt) 4051 if (forkcnt)
3601 { 4052 {
3602 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 4053 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
3603 EV_INVOKE_PENDING; 4054 EV_INVOKE_PENDING;
3604 } 4055 }
3605#endif 4056#endif
3606 4057
3607#if EV_PREPARE_ENABLE 4058#if EV_PREPARE_ENABLE
3608 /* queue prepare watchers (and execute them) */ 4059 /* queue prepare watchers (and execute them) */
3609 if (expect_false (preparecnt)) 4060 if (ecb_expect_false (preparecnt))
3610 { 4061 {
3611 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 4062 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
3612 EV_INVOKE_PENDING; 4063 EV_INVOKE_PENDING;
3613 } 4064 }
3614#endif 4065#endif
3615 4066
3616 if (expect_false (loop_done)) 4067 if (ecb_expect_false (loop_done))
3617 break; 4068 break;
3618 4069
3619 /* we might have forked, so reify kernel state if necessary */ 4070 /* we might have forked, so reify kernel state if necessary */
3620 if (expect_false (postfork)) 4071 if (ecb_expect_false (postfork))
3621 loop_fork (EV_A); 4072 loop_fork (EV_A);
3622 4073
3623 /* update fd-related kernel structures */ 4074 /* update fd-related kernel structures */
3624 fd_reify (EV_A); 4075 fd_reify (EV_A);
3625 4076
… …
3630 4081
3631 /* remember old timestamp for io_blocktime calculation */ 4082 /* remember old timestamp for io_blocktime calculation */
3632 ev_tstamp prev_mn_now = mn_now; 4083 ev_tstamp prev_mn_now = mn_now;
3633 4084
3634 /* update time to cancel out callback processing overhead */ 4085 /* update time to cancel out callback processing overhead */
3635 time_update (EV_A_ 1e100); 4086 time_update (EV_A_ EV_TS_CONST (EV_TSTAMP_HUGE));
3636 4087
3637 /* from now on, we want a pipe-wake-up */ 4088 /* from now on, we want a pipe-wake-up */
3638 pipe_write_wanted = 1; 4089 pipe_write_wanted = 1;
3639 4090
3640 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 */
3641 4092
3642 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) 4093 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
3643 { 4094 {
3644 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
3645 4108
3646 if (timercnt) 4109 if (timercnt)
3647 { 4110 {
3648 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now; 4111 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
3649 if (waittime > to) waittime = to; 4112 if (waittime > to) waittime = to;
… …
3656 if (waittime > to) waittime = to; 4119 if (waittime > to) waittime = to;
3657 } 4120 }
3658#endif 4121#endif
3659 4122
3660 /* don't let timeouts decrease the waittime below timeout_blocktime */ 4123 /* don't let timeouts decrease the waittime below timeout_blocktime */
3661 if (expect_false (waittime < timeout_blocktime)) 4124 if (ecb_expect_false (waittime < timeout_blocktime))
3662 waittime = timeout_blocktime; 4125 waittime = timeout_blocktime;
3663 4126
3664 /* at this point, we NEED to wait, so we have to ensure */ 4127 /* now there are two more special cases left, either we have
3665 /* 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 */
3666 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.)
3667 waittime = backend_mintime; 4135 : backend_mintime;
3668 4136
3669 /* extra check because io_blocktime is commonly 0 */ 4137 /* extra check because io_blocktime is commonly 0 */
3670 if (expect_false (io_blocktime)) 4138 if (ecb_expect_false (io_blocktime))
3671 { 4139 {
3672 sleeptime = io_blocktime - (mn_now - prev_mn_now); 4140 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3673 4141
3674 if (sleeptime > waittime - backend_mintime) 4142 if (sleeptime > waittime - backend_mintime)
3675 sleeptime = waittime - backend_mintime; 4143 sleeptime = waittime - backend_mintime;
3676 4144
3677 if (expect_true (sleeptime > 0.)) 4145 if (ecb_expect_true (sleeptime > EV_TS_CONST (0.)))
3678 { 4146 {
3679 ev_sleep (sleeptime); 4147 ev_sleep (sleeptime);
3680 waittime -= sleeptime; 4148 waittime -= sleeptime;
3681 } 4149 }
3682 } 4150 }
… …
3696 { 4164 {
3697 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)));
3698 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 4166 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3699 } 4167 }
3700 4168
3701
3702 /* update ev_rt_now, do magic */ 4169 /* update ev_rt_now, do magic */
3703 time_update (EV_A_ waittime + sleeptime); 4170 time_update (EV_A_ waittime + sleeptime);
3704 } 4171 }
3705 4172
3706 /* queue pending timers and reschedule them */ 4173 /* queue pending timers and reschedule them */
… …
3714 idle_reify (EV_A); 4181 idle_reify (EV_A);
3715#endif 4182#endif
3716 4183
3717#if EV_CHECK_ENABLE 4184#if EV_CHECK_ENABLE
3718 /* queue check watchers, to be executed first */ 4185 /* queue check watchers, to be executed first */
3719 if (expect_false (checkcnt)) 4186 if (ecb_expect_false (checkcnt))
3720 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 4187 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3721#endif 4188#endif
3722 4189
3723 EV_INVOKE_PENDING; 4190 EV_INVOKE_PENDING;
3724 } 4191 }
3725 while (expect_true ( 4192 while (ecb_expect_true (
3726 activecnt 4193 activecnt
3727 && !loop_done 4194 && !loop_done
3728 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) 4195 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
3729 )); 4196 ));
3730 4197
… …
3757} 4224}
3758 4225
3759void 4226void
3760ev_now_update (EV_P) EV_NOEXCEPT 4227ev_now_update (EV_P) EV_NOEXCEPT
3761{ 4228{
3762 time_update (EV_A_ 1e100); 4229 time_update (EV_A_ EV_TSTAMP_HUGE);
3763} 4230}
3764 4231
3765void 4232void
3766ev_suspend (EV_P) EV_NOEXCEPT 4233ev_suspend (EV_P) EV_NOEXCEPT
3767{ 4234{
… …
3794inline_size void 4261inline_size void
3795wlist_del (WL *head, WL elem) 4262wlist_del (WL *head, WL elem)
3796{ 4263{
3797 while (*head) 4264 while (*head)
3798 { 4265 {
3799 if (expect_true (*head == elem)) 4266 if (ecb_expect_true (*head == elem))
3800 { 4267 {
3801 *head = elem->next; 4268 *head = elem->next;
3802 break; 4269 break;
3803 } 4270 }
3804 4271
… …
3821ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT 4288ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
3822{ 4289{
3823 W w_ = (W)w; 4290 W w_ = (W)w;
3824 int pending = w_->pending; 4291 int pending = w_->pending;
3825 4292
3826 if (expect_true (pending)) 4293 if (ecb_expect_true (pending))
3827 { 4294 {
3828 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4295 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3829 p->w = (W)&pending_w; 4296 p->w = (W)&pending_w;
3830 w_->pending = 0; 4297 w_->pending = 0;
3831 return p->events; 4298 return p->events;
… …
3858 w->active = 0; 4325 w->active = 0;
3859} 4326}
3860 4327
3861/*****************************************************************************/ 4328/*****************************************************************************/
3862 4329
3863noinline 4330ecb_noinline
3864void 4331void
3865ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT 4332ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
3866{ 4333{
3867 int fd = w->fd; 4334 int fd = w->fd;
3868 4335
3869 if (expect_false (ev_is_active (w))) 4336 if (ecb_expect_false (ev_is_active (w)))
3870 return; 4337 return;
3871 4338
3872 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4339 assert (("libev: ev_io_start called with negative fd", fd >= 0));
3873 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))));
3874 4341
4342#if EV_VERIFY >= 2
4343 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4344#endif
3875 EV_FREQUENT_CHECK; 4345 EV_FREQUENT_CHECK;
3876 4346
3877 ev_start (EV_A_ (W)w, 1); 4347 ev_start (EV_A_ (W)w, 1);
3878 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4348 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
3879 wlist_add (&anfds[fd].head, (WL)w); 4349 wlist_add (&anfds[fd].head, (WL)w);
3880 4350
3881 /* common bug, apparently */ 4351 /* common bug, apparently */
3882 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));
3883 4353
… …
3885 w->events &= ~EV__IOFDSET; 4355 w->events &= ~EV__IOFDSET;
3886 4356
3887 EV_FREQUENT_CHECK; 4357 EV_FREQUENT_CHECK;
3888} 4358}
3889 4359
3890noinline 4360ecb_noinline
3891void 4361void
3892ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT 4362ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
3893{ 4363{
3894 clear_pending (EV_A_ (W)w); 4364 clear_pending (EV_A_ (W)w);
3895 if (expect_false (!ev_is_active (w))) 4365 if (ecb_expect_false (!ev_is_active (w)))
3896 return; 4366 return;
3897 4367
3898 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));
3899 4369
4370#if EV_VERIFY >= 2
4371 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4372#endif
3900 EV_FREQUENT_CHECK; 4373 EV_FREQUENT_CHECK;
3901 4374
3902 wlist_del (&anfds[w->fd].head, (WL)w); 4375 wlist_del (&anfds[w->fd].head, (WL)w);
3903 ev_stop (EV_A_ (W)w); 4376 ev_stop (EV_A_ (W)w);
3904 4377
3905 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 4378 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3906 4379
3907 EV_FREQUENT_CHECK; 4380 EV_FREQUENT_CHECK;
3908} 4381}
3909 4382
3910noinline 4383ecb_noinline
3911void 4384void
3912ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT 4385ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
3913{ 4386{
3914 if (expect_false (ev_is_active (w))) 4387 if (ecb_expect_false (ev_is_active (w)))
3915 return; 4388 return;
3916 4389
3917 ev_at (w) += mn_now; 4390 ev_at (w) += mn_now;
3918 4391
3919 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.));
3920 4393
3921 EV_FREQUENT_CHECK; 4394 EV_FREQUENT_CHECK;
3922 4395
3923 ++timercnt; 4396 ++timercnt;
3924 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4397 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
3925 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4398 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
3926 ANHE_w (timers [ev_active (w)]) = (WT)w; 4399 ANHE_w (timers [ev_active (w)]) = (WT)w;
3927 ANHE_at_cache (timers [ev_active (w)]); 4400 ANHE_at_cache (timers [ev_active (w)]);
3928 upheap (timers, ev_active (w)); 4401 upheap (timers, ev_active (w));
3929 4402
3930 EV_FREQUENT_CHECK; 4403 EV_FREQUENT_CHECK;
3931 4404
3932 /*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));*/
3933} 4406}
3934 4407
3935noinline 4408ecb_noinline
3936void 4409void
3937ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT 4410ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
3938{ 4411{
3939 clear_pending (EV_A_ (W)w); 4412 clear_pending (EV_A_ (W)w);
3940 if (expect_false (!ev_is_active (w))) 4413 if (ecb_expect_false (!ev_is_active (w)))
3941 return; 4414 return;
3942 4415
3943 EV_FREQUENT_CHECK; 4416 EV_FREQUENT_CHECK;
3944 4417
3945 { 4418 {
… …
3947 4420
3948 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));
3949 4422
3950 --timercnt; 4423 --timercnt;
3951 4424
3952 if (expect_true (active < timercnt + HEAP0)) 4425 if (ecb_expect_true (active < timercnt + HEAP0))
3953 { 4426 {
3954 timers [active] = timers [timercnt + HEAP0]; 4427 timers [active] = timers [timercnt + HEAP0];
3955 adjustheap (timers, timercnt, active); 4428 adjustheap (timers, timercnt, active);
3956 } 4429 }
3957 } 4430 }
… …
3961 ev_stop (EV_A_ (W)w); 4434 ev_stop (EV_A_ (W)w);
3962 4435
3963 EV_FREQUENT_CHECK; 4436 EV_FREQUENT_CHECK;
3964} 4437}
3965 4438
3966noinline 4439ecb_noinline
3967void 4440void
3968ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT 4441ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
3969{ 4442{
3970 EV_FREQUENT_CHECK; 4443 EV_FREQUENT_CHECK;
3971 4444
… …
3992} 4465}
3993 4466
3994ev_tstamp 4467ev_tstamp
3995ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT 4468ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
3996{ 4469{
3997 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.));
3998} 4471}
3999 4472
4000#if EV_PERIODIC_ENABLE 4473#if EV_PERIODIC_ENABLE
4001noinline 4474ecb_noinline
4002void 4475void
4003ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT 4476ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
4004{ 4477{
4005 if (expect_false (ev_is_active (w))) 4478 if (ecb_expect_false (ev_is_active (w)))
4006 return; 4479 return;
4480
4481#if EV_USE_TIMERFD
4482 if (timerfd == -2)
4483 evtimerfd_init (EV_A);
4484#endif
4007 4485
4008 if (w->reschedule_cb) 4486 if (w->reschedule_cb)
4009 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4487 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
4010 else if (w->interval) 4488 else if (w->interval)
4011 { 4489 {
… …
4017 4495
4018 EV_FREQUENT_CHECK; 4496 EV_FREQUENT_CHECK;
4019 4497
4020 ++periodiccnt; 4498 ++periodiccnt;
4021 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4499 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
4022 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4500 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
4023 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4501 ANHE_w (periodics [ev_active (w)]) = (WT)w;
4024 ANHE_at_cache (periodics [ev_active (w)]); 4502 ANHE_at_cache (periodics [ev_active (w)]);
4025 upheap (periodics, ev_active (w)); 4503 upheap (periodics, ev_active (w));
4026 4504
4027 EV_FREQUENT_CHECK; 4505 EV_FREQUENT_CHECK;
4028 4506
4029 /*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));*/
4030} 4508}
4031 4509
4032noinline 4510ecb_noinline
4033void 4511void
4034ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT 4512ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
4035{ 4513{
4036 clear_pending (EV_A_ (W)w); 4514 clear_pending (EV_A_ (W)w);
4037 if (expect_false (!ev_is_active (w))) 4515 if (ecb_expect_false (!ev_is_active (w)))
4038 return; 4516 return;
4039 4517
4040 EV_FREQUENT_CHECK; 4518 EV_FREQUENT_CHECK;
4041 4519
4042 { 4520 {
… …
4044 4522
4045 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));
4046 4524
4047 --periodiccnt; 4525 --periodiccnt;
4048 4526
4049 if (expect_true (active < periodiccnt + HEAP0)) 4527 if (ecb_expect_true (active < periodiccnt + HEAP0))
4050 { 4528 {
4051 periodics [active] = periodics [periodiccnt + HEAP0]; 4529 periodics [active] = periodics [periodiccnt + HEAP0];
4052 adjustheap (periodics, periodiccnt, active); 4530 adjustheap (periodics, periodiccnt, active);
4053 } 4531 }
4054 } 4532 }
… …
4056 ev_stop (EV_A_ (W)w); 4534 ev_stop (EV_A_ (W)w);
4057 4535
4058 EV_FREQUENT_CHECK; 4536 EV_FREQUENT_CHECK;
4059} 4537}
4060 4538
4061noinline 4539ecb_noinline
4062void 4540void
4063ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT 4541ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
4064{ 4542{
4065 /* TODO: use adjustheap and recalculation */ 4543 /* TODO: use adjustheap and recalculation */
4066 ev_periodic_stop (EV_A_ w); 4544 ev_periodic_stop (EV_A_ w);
… …
4072# define SA_RESTART 0 4550# define SA_RESTART 0
4073#endif 4551#endif
4074 4552
4075#if EV_SIGNAL_ENABLE 4553#if EV_SIGNAL_ENABLE
4076 4554
4077noinline 4555ecb_noinline
4078void 4556void
4079ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT 4557ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
4080{ 4558{
4081 if (expect_false (ev_is_active (w))) 4559 if (ecb_expect_false (ev_is_active (w)))
4082 return; 4560 return;
4083 4561
4084 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));
4085 4563
4086#if EV_MULTIPLICITY 4564#if EV_MULTIPLICITY
… …
4155 } 4633 }
4156 4634
4157 EV_FREQUENT_CHECK; 4635 EV_FREQUENT_CHECK;
4158} 4636}
4159 4637
4160noinline 4638ecb_noinline
4161void 4639void
4162ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT 4640ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
4163{ 4641{
4164 clear_pending (EV_A_ (W)w); 4642 clear_pending (EV_A_ (W)w);
4165 if (expect_false (!ev_is_active (w))) 4643 if (ecb_expect_false (!ev_is_active (w)))
4166 return; 4644 return;
4167 4645
4168 EV_FREQUENT_CHECK; 4646 EV_FREQUENT_CHECK;
4169 4647
4170 wlist_del (&signals [w->signum - 1].head, (WL)w); 4648 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
4203ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT 4681ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
4204{ 4682{
4205#if EV_MULTIPLICITY 4683#if EV_MULTIPLICITY
4206 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));
4207#endif 4685#endif
4208 if (expect_false (ev_is_active (w))) 4686 if (ecb_expect_false (ev_is_active (w)))
4209 return; 4687 return;
4210 4688
4211 EV_FREQUENT_CHECK; 4689 EV_FREQUENT_CHECK;
4212 4690
4213 ev_start (EV_A_ (W)w, 1); 4691 ev_start (EV_A_ (W)w, 1);
… …
4218 4696
4219void 4697void
4220ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT 4698ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
4221{ 4699{
4222 clear_pending (EV_A_ (W)w); 4700 clear_pending (EV_A_ (W)w);
4223 if (expect_false (!ev_is_active (w))) 4701 if (ecb_expect_false (!ev_is_active (w)))
4224 return; 4702 return;
4225 4703
4226 EV_FREQUENT_CHECK; 4704 EV_FREQUENT_CHECK;
4227 4705
4228 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); 4706 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
… …
4242 4720
4243#define DEF_STAT_INTERVAL 5.0074891 4721#define DEF_STAT_INTERVAL 5.0074891
4244#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4722#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
4245#define MIN_STAT_INTERVAL 0.1074891 4723#define MIN_STAT_INTERVAL 0.1074891
4246 4724
4247noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4725ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
4248 4726
4249#if EV_USE_INOTIFY 4727#if EV_USE_INOTIFY
4250 4728
4251/* 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 */
4252# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4730# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
4253 4731
4254noinline 4732ecb_noinline
4255static void 4733static void
4256infy_add (EV_P_ ev_stat *w) 4734infy_add (EV_P_ ev_stat *w)
4257{ 4735{
4258 w->wd = inotify_add_watch (fs_fd, w->path, 4736 w->wd = inotify_add_watch (fs_fd, w->path,
4259 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY 4737 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
… …
4324 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4802 if (ev_is_active (&w->timer)) ev_ref (EV_A);
4325 ev_timer_again (EV_A_ &w->timer); 4803 ev_timer_again (EV_A_ &w->timer);
4326 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4804 if (ev_is_active (&w->timer)) ev_unref (EV_A);
4327} 4805}
4328 4806
4329noinline 4807ecb_noinline
4330static void 4808static void
4331infy_del (EV_P_ ev_stat *w) 4809infy_del (EV_P_ ev_stat *w)
4332{ 4810{
4333 int slot; 4811 int slot;
4334 int wd = w->wd; 4812 int wd = w->wd;
… …
4342 4820
4343 /* remove this watcher, if others are watching it, they will rearm */ 4821 /* remove this watcher, if others are watching it, they will rearm */
4344 inotify_rm_watch (fs_fd, wd); 4822 inotify_rm_watch (fs_fd, wd);
4345} 4823}
4346 4824
4347noinline 4825ecb_noinline
4348static void 4826static void
4349infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4827infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
4350{ 4828{
4351 if (slot < 0) 4829 if (slot < 0)
4352 /* overflow, need to check for all hash slots */ 4830 /* overflow, need to check for all hash slots */
… …
4498 w->attr.st_nlink = 0; 4976 w->attr.st_nlink = 0;
4499 else if (!w->attr.st_nlink) 4977 else if (!w->attr.st_nlink)
4500 w->attr.st_nlink = 1; 4978 w->attr.st_nlink = 1;
4501} 4979}
4502 4980
4503noinline 4981ecb_noinline
4504static void 4982static void
4505stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4983stat_timer_cb (EV_P_ ev_timer *w_, int revents)
4506{ 4984{
4507 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4985 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
4508 4986
… …
4542} 5020}
4543 5021
4544void 5022void
4545ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT 5023ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
4546{ 5024{
4547 if (expect_false (ev_is_active (w))) 5025 if (ecb_expect_false (ev_is_active (w)))
4548 return; 5026 return;
4549 5027
4550 ev_stat_stat (EV_A_ w); 5028 ev_stat_stat (EV_A_ w);
4551 5029
4552 if (w->interval < MIN_STAT_INTERVAL && w->interval) 5030 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
4574 5052
4575void 5053void
4576ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT 5054ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
4577{ 5055{
4578 clear_pending (EV_A_ (W)w); 5056 clear_pending (EV_A_ (W)w);
4579 if (expect_false (!ev_is_active (w))) 5057 if (ecb_expect_false (!ev_is_active (w)))
4580 return; 5058 return;
4581 5059
4582 EV_FREQUENT_CHECK; 5060 EV_FREQUENT_CHECK;
4583 5061
4584#if EV_USE_INOTIFY 5062#if EV_USE_INOTIFY
… …
4599 5077
4600#if EV_IDLE_ENABLE 5078#if EV_IDLE_ENABLE
4601void 5079void
4602ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT 5080ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
4603{ 5081{
4604 if (expect_false (ev_is_active (w))) 5082 if (ecb_expect_false (ev_is_active (w)))
4605 return; 5083 return;
4606 5084
4607 pri_adjust (EV_A_ (W)w); 5085 pri_adjust (EV_A_ (W)w);
4608 5086
4609 EV_FREQUENT_CHECK; 5087 EV_FREQUENT_CHECK;
… …
4612 int active = ++idlecnt [ABSPRI (w)]; 5090 int active = ++idlecnt [ABSPRI (w)];
4613 5091
4614 ++idleall; 5092 ++idleall;
4615 ev_start (EV_A_ (W)w, active); 5093 ev_start (EV_A_ (W)w, active);
4616 5094
4617 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);
4618 idles [ABSPRI (w)][active - 1] = w; 5096 idles [ABSPRI (w)][active - 1] = w;
4619 } 5097 }
4620 5098
4621 EV_FREQUENT_CHECK; 5099 EV_FREQUENT_CHECK;
4622} 5100}
4623 5101
4624void 5102void
4625ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT 5103ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
4626{ 5104{
4627 clear_pending (EV_A_ (W)w); 5105 clear_pending (EV_A_ (W)w);
4628 if (expect_false (!ev_is_active (w))) 5106 if (ecb_expect_false (!ev_is_active (w)))
4629 return; 5107 return;
4630 5108
4631 EV_FREQUENT_CHECK; 5109 EV_FREQUENT_CHECK;
4632 5110
4633 { 5111 {
… …
4646 5124
4647#if EV_PREPARE_ENABLE 5125#if EV_PREPARE_ENABLE
4648void 5126void
4649ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT 5127ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
4650{ 5128{
4651 if (expect_false (ev_is_active (w))) 5129 if (ecb_expect_false (ev_is_active (w)))
4652 return; 5130 return;
4653 5131
4654 EV_FREQUENT_CHECK; 5132 EV_FREQUENT_CHECK;
4655 5133
4656 ev_start (EV_A_ (W)w, ++preparecnt); 5134 ev_start (EV_A_ (W)w, ++preparecnt);
4657 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 5135 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
4658 prepares [preparecnt - 1] = w; 5136 prepares [preparecnt - 1] = w;
4659 5137
4660 EV_FREQUENT_CHECK; 5138 EV_FREQUENT_CHECK;
4661} 5139}
4662 5140
4663void 5141void
4664ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT 5142ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
4665{ 5143{
4666 clear_pending (EV_A_ (W)w); 5144 clear_pending (EV_A_ (W)w);
4667 if (expect_false (!ev_is_active (w))) 5145 if (ecb_expect_false (!ev_is_active (w)))
4668 return; 5146 return;
4669 5147
4670 EV_FREQUENT_CHECK; 5148 EV_FREQUENT_CHECK;
4671 5149
4672 { 5150 {
… …
4684 5162
4685#if EV_CHECK_ENABLE 5163#if EV_CHECK_ENABLE
4686void 5164void
4687ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT 5165ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
4688{ 5166{
4689 if (expect_false (ev_is_active (w))) 5167 if (ecb_expect_false (ev_is_active (w)))
4690 return; 5168 return;
4691 5169
4692 EV_FREQUENT_CHECK; 5170 EV_FREQUENT_CHECK;
4693 5171
4694 ev_start (EV_A_ (W)w, ++checkcnt); 5172 ev_start (EV_A_ (W)w, ++checkcnt);
4695 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 5173 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
4696 checks [checkcnt - 1] = w; 5174 checks [checkcnt - 1] = w;
4697 5175
4698 EV_FREQUENT_CHECK; 5176 EV_FREQUENT_CHECK;
4699} 5177}
4700 5178
4701void 5179void
4702ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT 5180ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
4703{ 5181{
4704 clear_pending (EV_A_ (W)w); 5182 clear_pending (EV_A_ (W)w);
4705 if (expect_false (!ev_is_active (w))) 5183 if (ecb_expect_false (!ev_is_active (w)))
4706 return; 5184 return;
4707 5185
4708 EV_FREQUENT_CHECK; 5186 EV_FREQUENT_CHECK;
4709 5187
4710 { 5188 {
… …
4719 EV_FREQUENT_CHECK; 5197 EV_FREQUENT_CHECK;
4720} 5198}
4721#endif 5199#endif
4722 5200
4723#if EV_EMBED_ENABLE 5201#if EV_EMBED_ENABLE
4724noinline 5202ecb_noinline
4725void 5203void
4726ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT 5204ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
4727{ 5205{
4728 ev_run (w->other, EVRUN_NOWAIT); 5206 ev_run (w->other, EVRUN_NOWAIT);
4729} 5207}
… …
4753 ev_run (EV_A_ EVRUN_NOWAIT); 5231 ev_run (EV_A_ EVRUN_NOWAIT);
4754 } 5232 }
4755 } 5233 }
4756} 5234}
4757 5235
5236#if EV_FORK_ENABLE
4758static void 5237static void
4759embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 5238embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
4760{ 5239{
4761 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));
4762 5241
… …
4769 ev_run (EV_A_ EVRUN_NOWAIT); 5248 ev_run (EV_A_ EVRUN_NOWAIT);
4770 } 5249 }
4771 5250
4772 ev_embed_start (EV_A_ w); 5251 ev_embed_start (EV_A_ w);
4773} 5252}
5253#endif
4774 5254
4775#if 0 5255#if 0
4776static void 5256static void
4777embed_idle_cb (EV_P_ ev_idle *idle, int revents) 5257embed_idle_cb (EV_P_ ev_idle *idle, int revents)
4778{ 5258{
… …
4781#endif 5261#endif
4782 5262
4783void 5263void
4784ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT 5264ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
4785{ 5265{
4786 if (expect_false (ev_is_active (w))) 5266 if (ecb_expect_false (ev_is_active (w)))
4787 return; 5267 return;
4788 5268
4789 { 5269 {
4790 EV_P = w->other; 5270 EV_P = w->other;
4791 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 ()));
… …
4799 5279
4800 ev_prepare_init (&w->prepare, embed_prepare_cb); 5280 ev_prepare_init (&w->prepare, embed_prepare_cb);
4801 ev_set_priority (&w->prepare, EV_MINPRI); 5281 ev_set_priority (&w->prepare, EV_MINPRI);
4802 ev_prepare_start (EV_A_ &w->prepare); 5282 ev_prepare_start (EV_A_ &w->prepare);
4803 5283
5284#if EV_FORK_ENABLE
4804 ev_fork_init (&w->fork, embed_fork_cb); 5285 ev_fork_init (&w->fork, embed_fork_cb);
4805 ev_fork_start (EV_A_ &w->fork); 5286 ev_fork_start (EV_A_ &w->fork);
5287#endif
4806 5288
4807 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 5289 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
4808 5290
4809 ev_start (EV_A_ (W)w, 1); 5291 ev_start (EV_A_ (W)w, 1);
4810 5292
… …
4813 5295
4814void 5296void
4815ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT 5297ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
4816{ 5298{
4817 clear_pending (EV_A_ (W)w); 5299 clear_pending (EV_A_ (W)w);
4818 if (expect_false (!ev_is_active (w))) 5300 if (ecb_expect_false (!ev_is_active (w)))
4819 return; 5301 return;
4820 5302
4821 EV_FREQUENT_CHECK; 5303 EV_FREQUENT_CHECK;
4822 5304
4823 ev_io_stop (EV_A_ &w->io); 5305 ev_io_stop (EV_A_ &w->io);
4824 ev_prepare_stop (EV_A_ &w->prepare); 5306 ev_prepare_stop (EV_A_ &w->prepare);
5307#if EV_FORK_ENABLE
4825 ev_fork_stop (EV_A_ &w->fork); 5308 ev_fork_stop (EV_A_ &w->fork);
5309#endif
4826 5310
4827 ev_stop (EV_A_ (W)w); 5311 ev_stop (EV_A_ (W)w);
4828 5312
4829 EV_FREQUENT_CHECK; 5313 EV_FREQUENT_CHECK;
4830} 5314}
… …
4832 5316
4833#if EV_FORK_ENABLE 5317#if EV_FORK_ENABLE
4834void 5318void
4835ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT 5319ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
4836{ 5320{
4837 if (expect_false (ev_is_active (w))) 5321 if (ecb_expect_false (ev_is_active (w)))
4838 return; 5322 return;
4839 5323
4840 EV_FREQUENT_CHECK; 5324 EV_FREQUENT_CHECK;
4841 5325
4842 ev_start (EV_A_ (W)w, ++forkcnt); 5326 ev_start (EV_A_ (W)w, ++forkcnt);
4843 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5327 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
4844 forks [forkcnt - 1] = w; 5328 forks [forkcnt - 1] = w;
4845 5329
4846 EV_FREQUENT_CHECK; 5330 EV_FREQUENT_CHECK;
4847} 5331}
4848 5332
4849void 5333void
4850ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT 5334ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
4851{ 5335{
4852 clear_pending (EV_A_ (W)w); 5336 clear_pending (EV_A_ (W)w);
4853 if (expect_false (!ev_is_active (w))) 5337 if (ecb_expect_false (!ev_is_active (w)))
4854 return; 5338 return;
4855 5339
4856 EV_FREQUENT_CHECK; 5340 EV_FREQUENT_CHECK;
4857 5341
4858 { 5342 {
… …
4870 5354
4871#if EV_CLEANUP_ENABLE 5355#if EV_CLEANUP_ENABLE
4872void 5356void
4873ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT 5357ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4874{ 5358{
4875 if (expect_false (ev_is_active (w))) 5359 if (ecb_expect_false (ev_is_active (w)))
4876 return; 5360 return;
4877 5361
4878 EV_FREQUENT_CHECK; 5362 EV_FREQUENT_CHECK;
4879 5363
4880 ev_start (EV_A_ (W)w, ++cleanupcnt); 5364 ev_start (EV_A_ (W)w, ++cleanupcnt);
4881 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 5365 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
4882 cleanups [cleanupcnt - 1] = w; 5366 cleanups [cleanupcnt - 1] = w;
4883 5367
4884 /* cleanup watchers should never keep a refcount on the loop */ 5368 /* cleanup watchers should never keep a refcount on the loop */
4885 ev_unref (EV_A); 5369 ev_unref (EV_A);
4886 EV_FREQUENT_CHECK; 5370 EV_FREQUENT_CHECK;
… …
4888 5372
4889void 5373void
4890ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT 5374ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4891{ 5375{
4892 clear_pending (EV_A_ (W)w); 5376 clear_pending (EV_A_ (W)w);
4893 if (expect_false (!ev_is_active (w))) 5377 if (ecb_expect_false (!ev_is_active (w)))
4894 return; 5378 return;
4895 5379
4896 EV_FREQUENT_CHECK; 5380 EV_FREQUENT_CHECK;
4897 ev_ref (EV_A); 5381 ev_ref (EV_A);
4898 5382
… …
4911 5395
4912#if EV_ASYNC_ENABLE 5396#if EV_ASYNC_ENABLE
4913void 5397void
4914ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT 5398ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4915{ 5399{
4916 if (expect_false (ev_is_active (w))) 5400 if (ecb_expect_false (ev_is_active (w)))
4917 return; 5401 return;
4918 5402
4919 w->sent = 0; 5403 w->sent = 0;
4920 5404
4921 evpipe_init (EV_A); 5405 evpipe_init (EV_A);
4922 5406
4923 EV_FREQUENT_CHECK; 5407 EV_FREQUENT_CHECK;
4924 5408
4925 ev_start (EV_A_ (W)w, ++asynccnt); 5409 ev_start (EV_A_ (W)w, ++asynccnt);
4926 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5410 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
4927 asyncs [asynccnt - 1] = w; 5411 asyncs [asynccnt - 1] = w;
4928 5412
4929 EV_FREQUENT_CHECK; 5413 EV_FREQUENT_CHECK;
4930} 5414}
4931 5415
4932void 5416void
4933ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT 5417ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4934{ 5418{
4935 clear_pending (EV_A_ (W)w); 5419 clear_pending (EV_A_ (W)w);
4936 if (expect_false (!ev_is_active (w))) 5420 if (ecb_expect_false (!ev_is_active (w)))
4937 return; 5421 return;
4938 5422
4939 EV_FREQUENT_CHECK; 5423 EV_FREQUENT_CHECK;
4940 5424
4941 { 5425 {
… …
4999 5483
5000void 5484void
5001ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT 5485ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
5002{ 5486{
5003 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));
5004
5005 if (expect_false (!once))
5006 {
5007 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
5008 return;
5009 }
5010 5488
5011 once->cb = cb; 5489 once->cb = cb;
5012 once->arg = arg; 5490 once->arg = arg;
5013 5491
5014 ev_init (&once->io, once_cb_io); 5492 ev_init (&once->io, once_cb_io);

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