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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 1.520 by root, Sat Dec 28 07:44:15 2019 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010,2011,2012,2013 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007-2019 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
… …
115# else 115# else
116# undef EV_USE_EPOLL 116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0 117# define EV_USE_EPOLL 0
118# endif 118# endif
119 119
120# if HAVE_LINUX_AIO_ABI_H
121# ifndef EV_USE_LINUXAIO
122# define EV_USE_LINUXAIO 0 /* was: EV_FEATURE_BACKENDS, always off by default */
123# endif
124# else
125# undef EV_USE_LINUXAIO
126# define EV_USE_LINUXAIO 0
127# endif
128
129# if HAVE_LINUX_FS_H && HAVE_SYS_TIMERFD_H && HAVE_KERNEL_RWF_T
130# ifndef EV_USE_IOURING
131# define EV_USE_IOURING EV_FEATURE_BACKENDS
132# endif
133# else
134# undef EV_USE_IOURING
135# define EV_USE_IOURING 0
136# endif
137
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H 138# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
121# ifndef EV_USE_KQUEUE 139# ifndef EV_USE_KQUEUE
122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS 140# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
123# endif 141# endif
124# else 142# else
… …
159# endif 177# endif
160# else 178# else
161# undef EV_USE_EVENTFD 179# undef EV_USE_EVENTFD
162# define EV_USE_EVENTFD 0 180# define EV_USE_EVENTFD 0
163# endif 181# endif
164 182
183# if HAVE_SYS_TIMERFD_H
184# ifndef EV_USE_TIMERFD
185# define EV_USE_TIMERFD EV_FEATURE_OS
186# endif
187# else
188# undef EV_USE_TIMERFD
189# define EV_USE_TIMERFD 0
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) */
489 584
585/* find a portable timestamp that is "always" in the future but fits into time_t.
586 * this is quite hard, and we are mostly guessing - we handle 32 bit signed/unsigned time_t,
587 * and sizes larger than 32 bit, and maybe the unlikely floating point time_t */
588#define EV_TSTAMP_HUGE \
589 (sizeof (time_t) >= 8 ? 10000000000000. \
590 : 0 < (time_t)4294967295 ? 4294967295. \
591 : 2147483647.) \
592
593#ifndef EV_TS_CONST
594# define EV_TS_CONST(nv) nv
595# define EV_TS_TO_MSEC(a) a * 1e3 + 0.9999
596# define EV_TS_FROM_USEC(us) us * 1e-6
490#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) 597# define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
491#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0) 598# define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
599# define EV_TV_GET(tv) ((tv).tv_sec + (tv).tv_usec * 1e-6)
600# define EV_TS_GET(ts) ((ts).tv_sec + (ts).tv_nsec * 1e-9)
601#endif
492 602
493/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ 603/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
494/* ECB.H BEGIN */ 604/* ECB.H BEGIN */
495/* 605/*
496 * libecb - http://software.schmorp.de/pkg/libecb 606 * libecb - http://software.schmorp.de/pkg/libecb
… …
534 644
535#ifndef ECB_H 645#ifndef ECB_H
536#define ECB_H 646#define ECB_H
537 647
538/* 16 bits major, 16 bits minor */ 648/* 16 bits major, 16 bits minor */
539#define ECB_VERSION 0x00010005 649#define ECB_VERSION 0x00010006
540 650
541#ifdef _WIN32 651#ifdef _WIN32
542 typedef signed char int8_t; 652 typedef signed char int8_t;
543 typedef unsigned char uint8_t; 653 typedef unsigned char uint8_t;
544 typedef signed short int16_t; 654 typedef signed short int16_t;
… …
609 #define ECB_CLANG_EXTENSION(x) 0 719 #define ECB_CLANG_EXTENSION(x) 0
610#endif 720#endif
611 721
612#define ECB_CPP (__cplusplus+0) 722#define ECB_CPP (__cplusplus+0)
613#define ECB_CPP11 (__cplusplus >= 201103L) 723#define ECB_CPP11 (__cplusplus >= 201103L)
724#define ECB_CPP14 (__cplusplus >= 201402L)
725#define ECB_CPP17 (__cplusplus >= 201703L)
614 726
615#if ECB_CPP 727#if ECB_CPP
616 #define ECB_C 0 728 #define ECB_C 0
617 #define ECB_STDC_VERSION 0 729 #define ECB_STDC_VERSION 0
618#else 730#else
… …
620 #define ECB_STDC_VERSION __STDC_VERSION__ 732 #define ECB_STDC_VERSION __STDC_VERSION__
621#endif 733#endif
622 734
623#define ECB_C99 (ECB_STDC_VERSION >= 199901L) 735#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
624#define ECB_C11 (ECB_STDC_VERSION >= 201112L) 736#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
737#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
625 738
626#if ECB_CPP 739#if ECB_CPP
627 #define ECB_EXTERN_C extern "C" 740 #define ECB_EXTERN_C extern "C"
628 #define ECB_EXTERN_C_BEG ECB_EXTERN_C { 741 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
629 #define ECB_EXTERN_C_END } 742 #define ECB_EXTERN_C_END }
… …
655 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */ 768 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
656#endif 769#endif
657 770
658#ifndef ECB_MEMORY_FENCE 771#ifndef ECB_MEMORY_FENCE
659 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 772 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
773 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
660 #if __i386 || __i386__ 774 #if __i386 || __i386__
661 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") 775 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
662 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") 776 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
663 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 777 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
664 #elif ECB_GCC_AMD64 778 #elif ECB_GCC_AMD64
665 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 779 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
666 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") 780 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
667 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 781 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
668 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 782 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
669 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 783 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
670 #elif defined __ARM_ARCH_2__ \ 784 #elif defined __ARM_ARCH_2__ \
671 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \ 785 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
672 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \ 786 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
… …
714 #if ECB_GCC_VERSION(4,7) 828 #if ECB_GCC_VERSION(4,7)
715 /* see comment below (stdatomic.h) about the C11 memory model. */ 829 /* see comment below (stdatomic.h) about the C11 memory model. */
716 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST) 830 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
717 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE) 831 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
718 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE) 832 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
833 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
719 834
720 #elif ECB_CLANG_EXTENSION(c_atomic) 835 #elif ECB_CLANG_EXTENSION(c_atomic)
721 /* see comment below (stdatomic.h) about the C11 memory model. */ 836 /* see comment below (stdatomic.h) about the C11 memory model. */
722 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) 837 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
723 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE) 838 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
724 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE) 839 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
840 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
725 841
726 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ 842 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
727 #define ECB_MEMORY_FENCE __sync_synchronize () 843 #define ECB_MEMORY_FENCE __sync_synchronize ()
728 #elif _MSC_VER >= 1500 /* VC++ 2008 */ 844 #elif _MSC_VER >= 1500 /* VC++ 2008 */
729 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */ 845 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
… …
739 #elif defined _WIN32 855 #elif defined _WIN32
740 #include <WinNT.h> 856 #include <WinNT.h>
741 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ 857 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
742 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 858 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
743 #include <mbarrier.h> 859 #include <mbarrier.h>
744 #define ECB_MEMORY_FENCE __machine_rw_barrier () 860 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
745 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier () 861 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
746 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier () 862 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
863 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
747 #elif __xlC__ 864 #elif __xlC__
748 #define ECB_MEMORY_FENCE __sync () 865 #define ECB_MEMORY_FENCE __sync ()
749 #endif 866 #endif
750#endif 867#endif
751 868
752#ifndef ECB_MEMORY_FENCE 869#ifndef ECB_MEMORY_FENCE
753 #if ECB_C11 && !defined __STDC_NO_ATOMICS__ 870 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
754 /* we assume that these memory fences work on all variables/all memory accesses, */ 871 /* we assume that these memory fences work on all variables/all memory accesses, */
755 /* not just C11 atomics and atomic accesses */ 872 /* not just C11 atomics and atomic accesses */
756 #include <stdatomic.h> 873 #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) 874 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
875 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
876 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
766 #endif 877 #endif
767#endif 878#endif
768 879
769#ifndef ECB_MEMORY_FENCE 880#ifndef ECB_MEMORY_FENCE
770 #if !ECB_AVOID_PTHREADS 881 #if !ECB_AVOID_PTHREADS
… …
788 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 899 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
789#endif 900#endif
790 901
791#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE 902#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
792 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 903 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
904#endif
905
906#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
907 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
793#endif 908#endif
794 909
795/*****************************************************************************/ 910/*****************************************************************************/
796 911
797#if ECB_CPP 912#if ECB_CPP
… …
1506/* ECB.H END */ 1621/* ECB.H END */
1507 1622
1508#if ECB_MEMORY_FENCE_NEEDS_PTHREADS 1623#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1509/* if your architecture doesn't need memory fences, e.g. because it is 1624/* if your architecture doesn't need memory fences, e.g. because it is
1510 * single-cpu/core, or if you use libev in a project that doesn't use libev 1625 * single-cpu/core, or if you use libev in a project that doesn't use libev
1511 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling 1626 * from multiple threads, then you can define ECB_NO_THREADS when compiling
1512 * libev, in which cases the memory fences become nops. 1627 * libev, in which cases the memory fences become nops.
1513 * alternatively, you can remove this #error and link against libpthread, 1628 * alternatively, you can remove this #error and link against libpthread,
1514 * which will then provide the memory fences. 1629 * which will then provide the memory fences.
1515 */ 1630 */
1516# error "memory fences not defined for your architecture, please report" 1631# error "memory fences not defined for your architecture, please report"
… …
1520# define ECB_MEMORY_FENCE do { } while (0) 1635# define ECB_MEMORY_FENCE do { } while (0)
1521# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 1636# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1522# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 1637# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1523#endif 1638#endif
1524 1639
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 1640#define inline_size ecb_inline
1530 1641
1531#if EV_FEATURE_CODE 1642#if EV_FEATURE_CODE
1532# define inline_speed ecb_inline 1643# define inline_speed ecb_inline
1533#else 1644#else
1534# define inline_speed noinline static 1645# define inline_speed ecb_noinline static
1535#endif 1646#endif
1647
1648/*****************************************************************************/
1649/* raw syscall wrappers */
1650
1651#if EV_NEED_SYSCALL
1652
1653#include <sys/syscall.h>
1654
1655/*
1656 * define some syscall wrappers for common architectures
1657 * this is mostly for nice looks during debugging, not performance.
1658 * our syscalls return < 0, not == -1, on error. which is good
1659 * enough for linux aio.
1660 * TODO: arm is also common nowadays, maybe even mips and x86
1661 * TODO: after implementing this, it suddenly looks like overkill, but its hard to remove...
1662 */
1663#if __GNUC__ && __linux && ECB_AMD64 && !EV_FEATURE_CODE
1664 /* the costly errno access probably kills this for size optimisation */
1665
1666 #define ev_syscall(nr,narg,arg1,arg2,arg3,arg4,arg5,arg6) \
1667 ({ \
1668 long res; \
1669 register unsigned long r6 __asm__ ("r9" ); \
1670 register unsigned long r5 __asm__ ("r8" ); \
1671 register unsigned long r4 __asm__ ("r10"); \
1672 register unsigned long r3 __asm__ ("rdx"); \
1673 register unsigned long r2 __asm__ ("rsi"); \
1674 register unsigned long r1 __asm__ ("rdi"); \
1675 if (narg >= 6) r6 = (unsigned long)(arg6); \
1676 if (narg >= 5) r5 = (unsigned long)(arg5); \
1677 if (narg >= 4) r4 = (unsigned long)(arg4); \
1678 if (narg >= 3) r3 = (unsigned long)(arg3); \
1679 if (narg >= 2) r2 = (unsigned long)(arg2); \
1680 if (narg >= 1) r1 = (unsigned long)(arg1); \
1681 __asm__ __volatile__ ( \
1682 "syscall\n\t" \
1683 : "=a" (res) \
1684 : "0" (nr), "r" (r1), "r" (r2), "r" (r3), "r" (r4), "r" (r5) \
1685 : "cc", "r11", "cx", "memory"); \
1686 errno = -res; \
1687 res; \
1688 })
1689
1690#endif
1691
1692#ifdef ev_syscall
1693 #define ev_syscall0(nr) ev_syscall (nr, 0, 0, 0, 0, 0, 0, 0)
1694 #define ev_syscall1(nr,arg1) ev_syscall (nr, 1, arg1, 0, 0, 0, 0, 0)
1695 #define ev_syscall2(nr,arg1,arg2) ev_syscall (nr, 2, arg1, arg2, 0, 0, 0, 0)
1696 #define ev_syscall3(nr,arg1,arg2,arg3) ev_syscall (nr, 3, arg1, arg2, arg3, 0, 0, 0)
1697 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) ev_syscall (nr, 3, arg1, arg2, arg3, arg4, 0, 0)
1698 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) ev_syscall (nr, 5, arg1, arg2, arg3, arg4, arg5, 0)
1699 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) ev_syscall (nr, 6, arg1, arg2, arg3, arg4, arg5,arg6)
1700#else
1701 #define ev_syscall0(nr) syscall (nr)
1702 #define ev_syscall1(nr,arg1) syscall (nr, arg1)
1703 #define ev_syscall2(nr,arg1,arg2) syscall (nr, arg1, arg2)
1704 #define ev_syscall3(nr,arg1,arg2,arg3) syscall (nr, arg1, arg2, arg3)
1705 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) syscall (nr, arg1, arg2, arg3, arg4)
1706 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) syscall (nr, arg1, arg2, arg3, arg4, arg5)
1707 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) syscall (nr, arg1, arg2, arg3, arg4, arg5,arg6)
1708#endif
1709
1710#endif
1711
1712/*****************************************************************************/
1536 1713
1537#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1714#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
1538 1715
1539#if EV_MINPRI == EV_MAXPRI 1716#if EV_MINPRI == EV_MAXPRI
1540# define ABSPRI(w) (((W)w), 0) 1717# define ABSPRI(w) (((W)w), 0)
1541#else 1718#else
1542# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1719# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
1543#endif 1720#endif
1544 1721
1545#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1722#define EMPTY /* required for microsofts broken pseudo-c compiler */
1546#define EMPTY2(a,b) /* used to suppress some warnings */
1547 1723
1548typedef ev_watcher *W; 1724typedef ev_watcher *W;
1549typedef ev_watcher_list *WL; 1725typedef ev_watcher_list *WL;
1550typedef ev_watcher_time *WT; 1726typedef ev_watcher_time *WT;
1551 1727
… …
1576# include "ev_win32.c" 1752# include "ev_win32.c"
1577#endif 1753#endif
1578 1754
1579/*****************************************************************************/ 1755/*****************************************************************************/
1580 1756
1757#if EV_USE_LINUXAIO
1758# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1759#endif
1760
1581/* define a suitable floor function (only used by periodics atm) */ 1761/* define a suitable floor function (only used by periodics atm) */
1582 1762
1583#if EV_USE_FLOOR 1763#if EV_USE_FLOOR
1584# include <math.h> 1764# include <math.h>
1585# define ev_floor(v) floor (v) 1765# define ev_floor(v) floor (v)
1586#else 1766#else
1587 1767
1588#include <float.h> 1768#include <float.h>
1589 1769
1590/* a floor() replacement function, should be independent of ev_tstamp type */ 1770/* a floor() replacement function, should be independent of ev_tstamp type */
1591noinline 1771ecb_noinline
1592static ev_tstamp 1772static ev_tstamp
1593ev_floor (ev_tstamp v) 1773ev_floor (ev_tstamp v)
1594{ 1774{
1595 /* the choice of shift factor is not terribly important */ 1775 /* the choice of shift factor is not terribly important */
1596#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1776#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1597 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1777 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1598#else 1778#else
1599 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; 1779 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1600#endif 1780#endif
1601 1781
1782 /* special treatment for negative arguments */
1783 if (ecb_expect_false (v < 0.))
1784 {
1785 ev_tstamp f = -ev_floor (-v);
1786
1787 return f - (f == v ? 0 : 1);
1788 }
1789
1602 /* argument too large for an unsigned long? */ 1790 /* argument too large for an unsigned long? then reduce it */
1603 if (expect_false (v >= shift)) 1791 if (ecb_expect_false (v >= shift))
1604 { 1792 {
1605 ev_tstamp f; 1793 ev_tstamp f;
1606 1794
1607 if (v == v - 1.) 1795 if (v == v - 1.)
1608 return v; /* very large number */ 1796 return v; /* very large numbers are assumed to be integer */
1609 1797
1610 f = shift * ev_floor (v * (1. / shift)); 1798 f = shift * ev_floor (v * (1. / shift));
1611 return f + ev_floor (v - f); 1799 return f + ev_floor (v - f);
1612 } 1800 }
1613 1801
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 */ 1802 /* fits into an unsigned long */
1623 return (unsigned long)v; 1803 return (unsigned long)v;
1624} 1804}
1625 1805
1626#endif 1806#endif
… …
1629 1809
1630#ifdef __linux 1810#ifdef __linux
1631# include <sys/utsname.h> 1811# include <sys/utsname.h>
1632#endif 1812#endif
1633 1813
1634noinline ecb_cold 1814ecb_noinline ecb_cold
1635static unsigned int 1815static unsigned int
1636ev_linux_version (void) 1816ev_linux_version (void)
1637{ 1817{
1638#ifdef __linux 1818#ifdef __linux
1639 unsigned int v = 0; 1819 unsigned int v = 0;
… …
1669} 1849}
1670 1850
1671/*****************************************************************************/ 1851/*****************************************************************************/
1672 1852
1673#if EV_AVOID_STDIO 1853#if EV_AVOID_STDIO
1674noinline ecb_cold 1854ecb_noinline ecb_cold
1675static void 1855static void
1676ev_printerr (const char *msg) 1856ev_printerr (const char *msg)
1677{ 1857{
1678 write (STDERR_FILENO, msg, strlen (msg)); 1858 write (STDERR_FILENO, msg, strlen (msg));
1679} 1859}
… …
1686ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT 1866ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
1687{ 1867{
1688 syserr_cb = cb; 1868 syserr_cb = cb;
1689} 1869}
1690 1870
1691noinline ecb_cold 1871ecb_noinline ecb_cold
1692static void 1872static void
1693ev_syserr (const char *msg) 1873ev_syserr (const char *msg)
1694{ 1874{
1695 if (!msg) 1875 if (!msg)
1696 msg = "(libev) system error"; 1876 msg = "(libev) system error";
… …
1767typedef struct 1947typedef struct
1768{ 1948{
1769 WL head; 1949 WL head;
1770 unsigned char events; /* the events watched for */ 1950 unsigned char events; /* the events watched for */
1771 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 1951 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
1772 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1952 unsigned char emask; /* some backends store the actual kernel mask in here */
1773 unsigned char unused; 1953 unsigned char eflags; /* flags field for use by backends */
1774#if EV_USE_EPOLL 1954#if EV_USE_EPOLL
1775 unsigned int egen; /* generation counter to counter epoll bugs */ 1955 unsigned int egen; /* generation counter to counter epoll bugs */
1776#endif 1956#endif
1777#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 1957#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1778 SOCKET handle; 1958 SOCKET handle;
… …
1832 static struct ev_loop default_loop_struct; 2012 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 */ 2013 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
1834 2014
1835#else 2015#else
1836 2016
1837 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */ 2017 EV_API_DECL ev_tstamp ev_rt_now = EV_TS_CONST (0.); /* needs to be initialised to make it a definition despite extern */
1838 #define VAR(name,decl) static decl; 2018 #define VAR(name,decl) static decl;
1839 #include "ev_vars.h" 2019 #include "ev_vars.h"
1840 #undef VAR 2020 #undef VAR
1841 2021
1842 static int ev_default_loop_ptr; 2022 static int ev_default_loop_ptr;
1843 2023
1844#endif 2024#endif
1845 2025
1846#if EV_FEATURE_API 2026#if EV_FEATURE_API
1847# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 2027# define EV_RELEASE_CB if (ecb_expect_false (release_cb)) release_cb (EV_A)
1848# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 2028# define EV_ACQUIRE_CB if (ecb_expect_false (acquire_cb)) acquire_cb (EV_A)
1849# define EV_INVOKE_PENDING invoke_cb (EV_A) 2029# define EV_INVOKE_PENDING invoke_cb (EV_A)
1850#else 2030#else
1851# define EV_RELEASE_CB (void)0 2031# define EV_RELEASE_CB (void)0
1852# define EV_ACQUIRE_CB (void)0 2032# define EV_ACQUIRE_CB (void)0
1853# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 2033# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
… …
1860#ifndef EV_HAVE_EV_TIME 2040#ifndef EV_HAVE_EV_TIME
1861ev_tstamp 2041ev_tstamp
1862ev_time (void) EV_NOEXCEPT 2042ev_time (void) EV_NOEXCEPT
1863{ 2043{
1864#if EV_USE_REALTIME 2044#if EV_USE_REALTIME
1865 if (expect_true (have_realtime)) 2045 if (ecb_expect_true (have_realtime))
1866 { 2046 {
1867 struct timespec ts; 2047 struct timespec ts;
1868 clock_gettime (CLOCK_REALTIME, &ts); 2048 clock_gettime (CLOCK_REALTIME, &ts);
1869 return ts.tv_sec + ts.tv_nsec * 1e-9; 2049 return EV_TS_GET (ts);
1870 } 2050 }
1871#endif 2051#endif
1872 2052
2053 {
1873 struct timeval tv; 2054 struct timeval tv;
1874 gettimeofday (&tv, 0); 2055 gettimeofday (&tv, 0);
1875 return tv.tv_sec + tv.tv_usec * 1e-6; 2056 return EV_TV_GET (tv);
2057 }
1876} 2058}
1877#endif 2059#endif
1878 2060
1879inline_size ev_tstamp 2061inline_size ev_tstamp
1880get_clock (void) 2062get_clock (void)
1881{ 2063{
1882#if EV_USE_MONOTONIC 2064#if EV_USE_MONOTONIC
1883 if (expect_true (have_monotonic)) 2065 if (ecb_expect_true (have_monotonic))
1884 { 2066 {
1885 struct timespec ts; 2067 struct timespec ts;
1886 clock_gettime (CLOCK_MONOTONIC, &ts); 2068 clock_gettime (CLOCK_MONOTONIC, &ts);
1887 return ts.tv_sec + ts.tv_nsec * 1e-9; 2069 return EV_TS_GET (ts);
1888 } 2070 }
1889#endif 2071#endif
1890 2072
1891 return ev_time (); 2073 return ev_time ();
1892} 2074}
… …
1900#endif 2082#endif
1901 2083
1902void 2084void
1903ev_sleep (ev_tstamp delay) EV_NOEXCEPT 2085ev_sleep (ev_tstamp delay) EV_NOEXCEPT
1904{ 2086{
1905 if (delay > 0.) 2087 if (delay > EV_TS_CONST (0.))
1906 { 2088 {
1907#if EV_USE_NANOSLEEP 2089#if EV_USE_NANOSLEEP
1908 struct timespec ts; 2090 struct timespec ts;
1909 2091
1910 EV_TS_SET (ts, delay); 2092 EV_TS_SET (ts, delay);
1911 nanosleep (&ts, 0); 2093 nanosleep (&ts, 0);
1912#elif defined _WIN32 2094#elif defined _WIN32
1913 /* maybe this should round up, as ms is very low resolution */ 2095 /* maybe this should round up, as ms is very low resolution */
1914 /* compared to select (µs) or nanosleep (ns) */ 2096 /* compared to select (µs) or nanosleep (ns) */
1915 Sleep ((unsigned long)(delay * 1e3)); 2097 Sleep ((unsigned long)(EV_TS_TO_MSEC (delay)));
1916#else 2098#else
1917 struct timeval tv; 2099 struct timeval tv;
1918 2100
1919 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 2101 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
1920 /* something not guaranteed by newer posix versions, but guaranteed */ 2102 /* something not guaranteed by newer posix versions, but guaranteed */
… …
1950 } 2132 }
1951 2133
1952 return ncur; 2134 return ncur;
1953} 2135}
1954 2136
1955noinline ecb_cold 2137ecb_noinline ecb_cold
1956static void * 2138static void *
1957array_realloc (int elem, void *base, int *cur, int cnt) 2139array_realloc (int elem, void *base, int *cur, int cnt)
1958{ 2140{
1959 *cur = array_nextsize (elem, *cur, cnt); 2141 *cur = array_nextsize (elem, *cur, cnt);
1960 return ev_realloc (base, elem * *cur); 2142 return ev_realloc (base, elem * *cur);
1961} 2143}
1962 2144
2145#define array_needsize_noinit(base,offset,count)
2146
1963#define array_init_zero(base,count) \ 2147#define array_needsize_zerofill(base,offset,count) \
1964 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2148 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
1965 2149
1966#define array_needsize(type,base,cur,cnt,init) \ 2150#define array_needsize(type,base,cur,cnt,init) \
1967 if (expect_false ((cnt) > (cur))) \ 2151 if (ecb_expect_false ((cnt) > (cur))) \
1968 { \ 2152 { \
1969 ecb_unused int ocur_ = (cur); \ 2153 ecb_unused int ocur_ = (cur); \
1970 (base) = (type *)array_realloc \ 2154 (base) = (type *)array_realloc \
1971 (sizeof (type), (base), &(cur), (cnt)); \ 2155 (sizeof (type), (base), &(cur), (cnt)); \
1972 init ((base) + (ocur_), (cur) - ocur_); \ 2156 init ((base), ocur_, ((cur) - ocur_)); \
1973 } 2157 }
1974 2158
1975#if 0 2159#if 0
1976#define array_slim(type,stem) \ 2160#define array_slim(type,stem) \
1977 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2161 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 2170 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
1987 2171
1988/*****************************************************************************/ 2172/*****************************************************************************/
1989 2173
1990/* dummy callback for pending events */ 2174/* dummy callback for pending events */
1991noinline 2175ecb_noinline
1992static void 2176static void
1993pendingcb (EV_P_ ev_prepare *w, int revents) 2177pendingcb (EV_P_ ev_prepare *w, int revents)
1994{ 2178{
1995} 2179}
1996 2180
1997noinline 2181ecb_noinline
1998void 2182void
1999ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT 2183ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
2000{ 2184{
2001 W w_ = (W)w; 2185 W w_ = (W)w;
2002 int pri = ABSPRI (w_); 2186 int pri = ABSPRI (w_);
2003 2187
2004 if (expect_false (w_->pending)) 2188 if (ecb_expect_false (w_->pending))
2005 pendings [pri][w_->pending - 1].events |= revents; 2189 pendings [pri][w_->pending - 1].events |= revents;
2006 else 2190 else
2007 { 2191 {
2008 w_->pending = ++pendingcnt [pri]; 2192 w_->pending = ++pendingcnt [pri];
2009 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2193 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
2010 pendings [pri][w_->pending - 1].w = w_; 2194 pendings [pri][w_->pending - 1].w = w_;
2011 pendings [pri][w_->pending - 1].events = revents; 2195 pendings [pri][w_->pending - 1].events = revents;
2012 } 2196 }
2013 2197
2014 pendingpri = NUMPRI - 1; 2198 pendingpri = NUMPRI - 1;
2015} 2199}
2016 2200
2017inline_speed void 2201inline_speed void
2018feed_reverse (EV_P_ W w) 2202feed_reverse (EV_P_ W w)
2019{ 2203{
2020 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2204 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
2021 rfeeds [rfeedcnt++] = w; 2205 rfeeds [rfeedcnt++] = w;
2022} 2206}
2023 2207
2024inline_size void 2208inline_size void
2025feed_reverse_done (EV_P_ int revents) 2209feed_reverse_done (EV_P_ int revents)
… …
2060inline_speed void 2244inline_speed void
2061fd_event (EV_P_ int fd, int revents) 2245fd_event (EV_P_ int fd, int revents)
2062{ 2246{
2063 ANFD *anfd = anfds + fd; 2247 ANFD *anfd = anfds + fd;
2064 2248
2065 if (expect_true (!anfd->reify)) 2249 if (ecb_expect_true (!anfd->reify))
2066 fd_event_nocheck (EV_A_ fd, revents); 2250 fd_event_nocheck (EV_A_ fd, revents);
2067} 2251}
2068 2252
2069void 2253void
2070ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT 2254ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
… …
2078inline_size void 2262inline_size void
2079fd_reify (EV_P) 2263fd_reify (EV_P)
2080{ 2264{
2081 int i; 2265 int i;
2082 2266
2267 /* most backends do not modify the fdchanges list in backend_modfiy.
2268 * except io_uring, which has fixed-size buffers which might force us
2269 * to handle events in backend_modify, causing fdchangesd to be amended,
2270 * which could result in an endless loop.
2271 * to avoid this, we do not dynamically handle fds that were added
2272 * during fd_reify. that menas thast for those backends, fdchangecnt
2273 * might be non-zero during poll, which must cause them to not block.
2274 * to not put too much of a burden on other backends, this detail
2275 * needs to be handled in the backend.
2276 */
2277 int changecnt = fdchangecnt;
2278
2083#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 2279#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
2084 for (i = 0; i < fdchangecnt; ++i) 2280 for (i = 0; i < changecnt; ++i)
2085 { 2281 {
2086 int fd = fdchanges [i]; 2282 int fd = fdchanges [i];
2087 ANFD *anfd = anfds + fd; 2283 ANFD *anfd = anfds + fd;
2088 2284
2089 if (anfd->reify & EV__IOFDSET && anfd->head) 2285 if (anfd->reify & EV__IOFDSET && anfd->head)
… …
2103 } 2299 }
2104 } 2300 }
2105 } 2301 }
2106#endif 2302#endif
2107 2303
2108 for (i = 0; i < fdchangecnt; ++i) 2304 for (i = 0; i < changecnt; ++i)
2109 { 2305 {
2110 int fd = fdchanges [i]; 2306 int fd = fdchanges [i];
2111 ANFD *anfd = anfds + fd; 2307 ANFD *anfd = anfds + fd;
2112 ev_io *w; 2308 ev_io *w;
2113 2309
2114 unsigned char o_events = anfd->events; 2310 unsigned char o_events = anfd->events;
2115 unsigned char o_reify = anfd->reify; 2311 unsigned char o_reify = anfd->reify;
2116 2312
2117 anfd->reify = 0; 2313 anfd->reify = 0;
2118 2314
2119 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 2315 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
2120 { 2316 {
2121 anfd->events = 0; 2317 anfd->events = 0;
2122 2318
2123 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2319 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
2124 anfd->events |= (unsigned char)w->events; 2320 anfd->events |= (unsigned char)w->events;
… …
2129 2325
2130 if (o_reify & EV__IOFDSET) 2326 if (o_reify & EV__IOFDSET)
2131 backend_modify (EV_A_ fd, o_events, anfd->events); 2327 backend_modify (EV_A_ fd, o_events, anfd->events);
2132 } 2328 }
2133 2329
2330 /* normally, fdchangecnt hasn't changed. if it has, then new fds have been added.
2331 * this is a rare case (see beginning comment in this function), so we copy them to the
2332 * front and hope the backend handles this case.
2333 */
2334 if (ecb_expect_false (fdchangecnt != changecnt))
2335 memmove (fdchanges, fdchanges + changecnt, (fdchangecnt - changecnt) * sizeof (*fdchanges));
2336
2134 fdchangecnt = 0; 2337 fdchangecnt -= changecnt;
2135} 2338}
2136 2339
2137/* something about the given fd changed */ 2340/* something about the given fd changed */
2138inline_size 2341inline_size
2139void 2342void
2140fd_change (EV_P_ int fd, int flags) 2343fd_change (EV_P_ int fd, int flags)
2141{ 2344{
2142 unsigned char reify = anfds [fd].reify; 2345 unsigned char reify = anfds [fd].reify;
2143 anfds [fd].reify |= flags; 2346 anfds [fd].reify |= flags;
2144 2347
2145 if (expect_true (!reify)) 2348 if (ecb_expect_true (!reify))
2146 { 2349 {
2147 ++fdchangecnt; 2350 ++fdchangecnt;
2148 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2351 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
2149 fdchanges [fdchangecnt - 1] = fd; 2352 fdchanges [fdchangecnt - 1] = fd;
2150 } 2353 }
2151} 2354}
2152 2355
2153/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2356/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
… …
2173 return fcntl (fd, F_GETFD) != -1; 2376 return fcntl (fd, F_GETFD) != -1;
2174#endif 2377#endif
2175} 2378}
2176 2379
2177/* called on EBADF to verify fds */ 2380/* called on EBADF to verify fds */
2178noinline ecb_cold 2381ecb_noinline ecb_cold
2179static void 2382static void
2180fd_ebadf (EV_P) 2383fd_ebadf (EV_P)
2181{ 2384{
2182 int fd; 2385 int fd;
2183 2386
… …
2186 if (!fd_valid (fd) && errno == EBADF) 2389 if (!fd_valid (fd) && errno == EBADF)
2187 fd_kill (EV_A_ fd); 2390 fd_kill (EV_A_ fd);
2188} 2391}
2189 2392
2190/* called on ENOMEM in select/poll to kill some fds and retry */ 2393/* called on ENOMEM in select/poll to kill some fds and retry */
2191noinline ecb_cold 2394ecb_noinline ecb_cold
2192static void 2395static void
2193fd_enomem (EV_P) 2396fd_enomem (EV_P)
2194{ 2397{
2195 int fd; 2398 int fd;
2196 2399
… …
2201 break; 2404 break;
2202 } 2405 }
2203} 2406}
2204 2407
2205/* usually called after fork if backend needs to re-arm all fds from scratch */ 2408/* usually called after fork if backend needs to re-arm all fds from scratch */
2206noinline 2409ecb_noinline
2207static void 2410static void
2208fd_rearm_all (EV_P) 2411fd_rearm_all (EV_P)
2209{ 2412{
2210 int fd; 2413 int fd;
2211 2414
… …
2265 ev_tstamp minat; 2468 ev_tstamp minat;
2266 ANHE *minpos; 2469 ANHE *minpos;
2267 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2470 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
2268 2471
2269 /* find minimum child */ 2472 /* find minimum child */
2270 if (expect_true (pos + DHEAP - 1 < E)) 2473 if (ecb_expect_true (pos + DHEAP - 1 < E))
2271 { 2474 {
2272 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2475 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
2273 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2476 if ( minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
2274 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2477 if ( minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
2275 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2478 if ( minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
2276 } 2479 }
2277 else if (pos < E) 2480 else if (pos < E)
2278 { 2481 {
2279 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2482 /* 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)); 2483 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)); 2484 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)); 2485 if (pos + 3 < E && minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
2283 } 2486 }
2284 else 2487 else
2285 break; 2488 break;
2286 2489
2287 if (ANHE_at (he) <= minat) 2490 if (ANHE_at (he) <= minat)
… …
2295 2498
2296 heap [k] = he; 2499 heap [k] = he;
2297 ev_active (ANHE_w (he)) = k; 2500 ev_active (ANHE_w (he)) = k;
2298} 2501}
2299 2502
2300#else /* 4HEAP */ 2503#else /* not 4HEAP */
2301 2504
2302#define HEAP0 1 2505#define HEAP0 1
2303#define HPARENT(k) ((k) >> 1) 2506#define HPARENT(k) ((k) >> 1)
2304#define UPHEAP_DONE(p,k) (!(p)) 2507#define UPHEAP_DONE(p,k) (!(p))
2305 2508
… …
2393 2596
2394/*****************************************************************************/ 2597/*****************************************************************************/
2395 2598
2396#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2599#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2397 2600
2398noinline ecb_cold 2601ecb_noinline ecb_cold
2399static void 2602static void
2400evpipe_init (EV_P) 2603evpipe_init (EV_P)
2401{ 2604{
2402 if (!ev_is_active (&pipe_w)) 2605 if (!ev_is_active (&pipe_w))
2403 { 2606 {
… …
2444inline_speed void 2647inline_speed void
2445evpipe_write (EV_P_ EV_ATOMIC_T *flag) 2648evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2446{ 2649{
2447 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */ 2650 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2448 2651
2449 if (expect_true (*flag)) 2652 if (ecb_expect_true (*flag))
2450 return; 2653 return;
2451 2654
2452 *flag = 1; 2655 *flag = 1;
2453 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */ 2656 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2454 2657
… …
2531 sig_pending = 0; 2734 sig_pending = 0;
2532 2735
2533 ECB_MEMORY_FENCE; 2736 ECB_MEMORY_FENCE;
2534 2737
2535 for (i = EV_NSIG - 1; i--; ) 2738 for (i = EV_NSIG - 1; i--; )
2536 if (expect_false (signals [i].pending)) 2739 if (ecb_expect_false (signals [i].pending))
2537 ev_feed_signal_event (EV_A_ i + 1); 2740 ev_feed_signal_event (EV_A_ i + 1);
2538 } 2741 }
2539#endif 2742#endif
2540 2743
2541#if EV_ASYNC_ENABLE 2744#if EV_ASYNC_ENABLE
… …
2582#endif 2785#endif
2583 2786
2584 ev_feed_signal (signum); 2787 ev_feed_signal (signum);
2585} 2788}
2586 2789
2587noinline 2790ecb_noinline
2588void 2791void
2589ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT 2792ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
2590{ 2793{
2591 WL w; 2794 WL w;
2592 2795
2593 if (expect_false (signum <= 0 || signum >= EV_NSIG)) 2796 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
2594 return; 2797 return;
2595 2798
2596 --signum; 2799 --signum;
2597 2800
2598#if EV_MULTIPLICITY 2801#if EV_MULTIPLICITY
2599 /* it is permissible to try to feed a signal to the wrong loop */ 2802 /* it is permissible to try to feed a signal to the wrong loop */
2600 /* or, likely more useful, feeding a signal nobody is waiting for */ 2803 /* or, likely more useful, feeding a signal nobody is waiting for */
2601 2804
2602 if (expect_false (signals [signum].loop != EV_A)) 2805 if (ecb_expect_false (signals [signum].loop != EV_A))
2603 return; 2806 return;
2604#endif 2807#endif
2605 2808
2606 signals [signum].pending = 0; 2809 signals [signum].pending = 0;
2607 ECB_MEMORY_FENCE_RELEASE; 2810 ECB_MEMORY_FENCE_RELEASE;
… …
2691 2894
2692#endif 2895#endif
2693 2896
2694/*****************************************************************************/ 2897/*****************************************************************************/
2695 2898
2899#if EV_USE_TIMERFD
2900
2901static void periodics_reschedule (EV_P);
2902
2903static void
2904timerfdcb (EV_P_ ev_io *iow, int revents)
2905{
2906 struct itimerspec its = { 0 };
2907
2908 /* since we can't easily come zup with a (portable) maximum value of time_t,
2909 * we wake up once per month, which hopefully is rare enough to not
2910 * be a problem. */
2911 its.it_value.tv_sec = ev_rt_now + 86400 * 30;
2912 timerfd_settime (timerfd, TFD_TIMER_ABSTIME | TFD_TIMER_CANCEL_ON_SET, &its, 0);
2913
2914 ev_rt_now = ev_time ();
2915 /* periodics_reschedule only needs ev_rt_now */
2916 /* but maybe in the future we want the full treatment. */
2917 /*
2918 now_floor = EV_TS_CONST (0.);
2919 time_update (EV_A_ EV_TSTAMP_HUGE);
2920 */
2921 periodics_reschedule (EV_A);
2922}
2923
2924ecb_noinline ecb_cold
2925static void
2926evtimerfd_init (EV_P)
2927{
2928 if (!ev_is_active (&timerfd_w))
2929 {
2930 timerfd = timerfd_create (CLOCK_REALTIME, TFD_NONBLOCK | TFD_CLOEXEC);
2931
2932 if (timerfd >= 0)
2933 {
2934 fd_intern (timerfd); /* just to be sure */
2935
2936 ev_io_init (&timerfd_w, timerfdcb, timerfd, EV_READ);
2937 ev_set_priority (&timerfd_w, EV_MINPRI);
2938 ev_io_start (EV_A_ &timerfd_w);
2939 ev_unref (EV_A); /* watcher should not keep loop alive */
2940
2941 /* (re-) arm timer */
2942 timerfdcb (EV_A_ 0, 0);
2943 }
2944 }
2945}
2946
2947#endif
2948
2949/*****************************************************************************/
2950
2696#if EV_USE_IOCP 2951#if EV_USE_IOCP
2697# include "ev_iocp.c" 2952# include "ev_iocp.c"
2698#endif 2953#endif
2699#if EV_USE_PORT 2954#if EV_USE_PORT
2700# include "ev_port.c" 2955# include "ev_port.c"
… …
2702#if EV_USE_KQUEUE 2957#if EV_USE_KQUEUE
2703# include "ev_kqueue.c" 2958# include "ev_kqueue.c"
2704#endif 2959#endif
2705#if EV_USE_EPOLL 2960#if EV_USE_EPOLL
2706# include "ev_epoll.c" 2961# include "ev_epoll.c"
2962#endif
2963#if EV_USE_LINUXAIO
2964# include "ev_linuxaio.c"
2965#endif
2966#if EV_USE_IOURING
2967# include "ev_iouring.c"
2707#endif 2968#endif
2708#if EV_USE_POLL 2969#if EV_USE_POLL
2709# include "ev_poll.c" 2970# include "ev_poll.c"
2710#endif 2971#endif
2711#if EV_USE_SELECT 2972#if EV_USE_SELECT
… …
2740unsigned int 3001unsigned int
2741ev_supported_backends (void) EV_NOEXCEPT 3002ev_supported_backends (void) EV_NOEXCEPT
2742{ 3003{
2743 unsigned int flags = 0; 3004 unsigned int flags = 0;
2744 3005
2745 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 3006 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2746 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 3007 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
2747 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 3008 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2748 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 3009 if (EV_USE_LINUXAIO ) flags |= EVBACKEND_LINUXAIO;
2749 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 3010 if (EV_USE_IOURING && ev_linux_version () >= 0x050601) flags |= EVBACKEND_IOURING; /* 5.6.1+ */
2750 3011 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
3012 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
3013
2751 return flags; 3014 return flags;
2752} 3015}
2753 3016
2754ecb_cold 3017ecb_cold
2755unsigned int 3018unsigned int
… …
2769#endif 3032#endif
2770#ifdef __FreeBSD__ 3033#ifdef __FreeBSD__
2771 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ 3034 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2772#endif 3035#endif
2773 3036
3037 /* TODO: linuxaio is very experimental */
3038#if !EV_RECOMMEND_LINUXAIO
3039 flags &= ~EVBACKEND_LINUXAIO;
3040#endif
3041 /* TODO: linuxaio is super experimental */
3042#if !EV_RECOMMEND_IOURING
3043 flags &= ~EVBACKEND_IOURING;
3044#endif
3045
2774 return flags; 3046 return flags;
2775} 3047}
2776 3048
2777ecb_cold 3049ecb_cold
2778unsigned int 3050unsigned int
… …
2782 3054
2783 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 3055 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2784 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 3056 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2785 flags &= ~EVBACKEND_EPOLL; 3057 flags &= ~EVBACKEND_EPOLL;
2786 3058
3059 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
3060
3061 /* EVBACKEND_IOURING is practically embeddable, but the current implementation is not
3062 * because our backend_fd is the epoll fd we need as fallback.
3063 * if the kernel ever is fixed, this might change...
3064 */
3065
2787 return flags; 3066 return flags;
2788} 3067}
2789 3068
2790unsigned int 3069unsigned int
2791ev_backend (EV_P) EV_NOEXCEPT 3070ev_backend (EV_P) EV_NOEXCEPT
… …
2843 acquire_cb = acquire; 3122 acquire_cb = acquire;
2844} 3123}
2845#endif 3124#endif
2846 3125
2847/* initialise a loop structure, must be zero-initialised */ 3126/* initialise a loop structure, must be zero-initialised */
2848noinline ecb_cold 3127ecb_noinline ecb_cold
2849static void 3128static void
2850loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT 3129loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
2851{ 3130{
2852 if (!backend) 3131 if (!backend)
2853 { 3132 {
… …
2908 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3187 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2909#endif 3188#endif
2910#if EV_USE_SIGNALFD 3189#if EV_USE_SIGNALFD
2911 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 3190 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2912#endif 3191#endif
3192#if EV_USE_TIMERFD
3193 timerfd = flags & EVFLAG_NOTIMERFD ? -1 : -2;
3194#endif
2913 3195
2914 if (!(flags & EVBACKEND_MASK)) 3196 if (!(flags & EVBACKEND_MASK))
2915 flags |= ev_recommended_backends (); 3197 flags |= ev_recommended_backends ();
2916 3198
2917#if EV_USE_IOCP 3199#if EV_USE_IOCP
2918 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 3200 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2919#endif 3201#endif
2920#if EV_USE_PORT 3202#if EV_USE_PORT
2921 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3203 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
2922#endif 3204#endif
2923#if EV_USE_KQUEUE 3205#if EV_USE_KQUEUE
2924 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 3206 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
3207#endif
3208#if EV_USE_IOURING
3209 if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
3210#endif
3211#if EV_USE_LINUXAIO
3212 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
2925#endif 3213#endif
2926#if EV_USE_EPOLL 3214#if EV_USE_EPOLL
2927 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3215 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
2928#endif 3216#endif
2929#if EV_USE_POLL 3217#if EV_USE_POLL
2930 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3218 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
2931#endif 3219#endif
2932#if EV_USE_SELECT 3220#if EV_USE_SELECT
2933 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3221 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
2934#endif 3222#endif
2935 3223
2936 ev_prepare_init (&pending_w, pendingcb); 3224 ev_prepare_init (&pending_w, pendingcb);
2937 3225
2938#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3226#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
2955 return; 3243 return;
2956#endif 3244#endif
2957 3245
2958#if EV_CLEANUP_ENABLE 3246#if EV_CLEANUP_ENABLE
2959 /* queue cleanup watchers (and execute them) */ 3247 /* queue cleanup watchers (and execute them) */
2960 if (expect_false (cleanupcnt)) 3248 if (ecb_expect_false (cleanupcnt))
2961 { 3249 {
2962 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); 3250 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2963 EV_INVOKE_PENDING; 3251 EV_INVOKE_PENDING;
2964 } 3252 }
2965#endif 3253#endif
… …
2984#if EV_USE_SIGNALFD 3272#if EV_USE_SIGNALFD
2985 if (ev_is_active (&sigfd_w)) 3273 if (ev_is_active (&sigfd_w))
2986 close (sigfd); 3274 close (sigfd);
2987#endif 3275#endif
2988 3276
3277#if EV_USE_TIMERFD
3278 if (ev_is_active (&timerfd_w))
3279 close (timerfd);
3280#endif
3281
2989#if EV_USE_INOTIFY 3282#if EV_USE_INOTIFY
2990 if (fs_fd >= 0) 3283 if (fs_fd >= 0)
2991 close (fs_fd); 3284 close (fs_fd);
2992#endif 3285#endif
2993 3286
2994 if (backend_fd >= 0) 3287 if (backend_fd >= 0)
2995 close (backend_fd); 3288 close (backend_fd);
2996 3289
2997#if EV_USE_IOCP 3290#if EV_USE_IOCP
2998 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3291 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2999#endif 3292#endif
3000#if EV_USE_PORT 3293#if EV_USE_PORT
3001 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3294 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
3002#endif 3295#endif
3003#if EV_USE_KQUEUE 3296#if EV_USE_KQUEUE
3004 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3297 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3298#endif
3299#if EV_USE_IOURING
3300 if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
3301#endif
3302#if EV_USE_LINUXAIO
3303 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
3005#endif 3304#endif
3006#if EV_USE_EPOLL 3305#if EV_USE_EPOLL
3007 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3306 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
3008#endif 3307#endif
3009#if EV_USE_POLL 3308#if EV_USE_POLL
3010 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3309 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
3011#endif 3310#endif
3012#if EV_USE_SELECT 3311#if EV_USE_SELECT
3013 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3312 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
3014#endif 3313#endif
3015 3314
3016 for (i = NUMPRI; i--; ) 3315 for (i = NUMPRI; i--; )
3017 { 3316 {
3018 array_free (pending, [i]); 3317 array_free (pending, [i]);
… …
3060 3359
3061inline_size void 3360inline_size void
3062loop_fork (EV_P) 3361loop_fork (EV_P)
3063{ 3362{
3064#if EV_USE_PORT 3363#if EV_USE_PORT
3065 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3364 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
3066#endif 3365#endif
3067#if EV_USE_KQUEUE 3366#if EV_USE_KQUEUE
3068 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3367 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3368#endif
3369#if EV_USE_IOURING
3370 if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
3371#endif
3372#if EV_USE_LINUXAIO
3373 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
3069#endif 3374#endif
3070#if EV_USE_EPOLL 3375#if EV_USE_EPOLL
3071 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3376 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
3072#endif 3377#endif
3073#if EV_USE_INOTIFY 3378#if EV_USE_INOTIFY
3074 infy_fork (EV_A); 3379 infy_fork (EV_A);
3075#endif 3380#endif
3076 3381
3382 if (postfork != 2)
3383 {
3384 #if EV_USE_SIGNALFD
3385 /* surprisingly, nothing needs to be done for signalfd, accoridng to docs, it does the right thing on fork */
3386 #endif
3387
3388 #if EV_USE_TIMERFD
3389 if (ev_is_active (&timerfd_w))
3390 {
3391 ev_ref (EV_A);
3392 ev_io_stop (EV_A_ &timerfd_w);
3393
3394 close (timerfd);
3395 timerfd = -2;
3396
3397 evtimerfd_init (EV_A);
3398 /* reschedule periodics, in case we missed something */
3399 ev_feed_event (EV_A_ &timerfd_w, EV_CUSTOM);
3400 }
3401 #endif
3402
3077#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3403 #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
3078 if (ev_is_active (&pipe_w) && postfork != 2) 3404 if (ev_is_active (&pipe_w))
3079 { 3405 {
3080 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 3406 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
3081 3407
3082 ev_ref (EV_A); 3408 ev_ref (EV_A);
3083 ev_io_stop (EV_A_ &pipe_w); 3409 ev_io_stop (EV_A_ &pipe_w);
3084 3410
3085 if (evpipe [0] >= 0) 3411 if (evpipe [0] >= 0)
3086 EV_WIN32_CLOSE_FD (evpipe [0]); 3412 EV_WIN32_CLOSE_FD (evpipe [0]);
3087 3413
3088 evpipe_init (EV_A); 3414 evpipe_init (EV_A);
3089 /* iterate over everything, in case we missed something before */ 3415 /* iterate over everything, in case we missed something before */
3090 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3416 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3417 }
3418 #endif
3091 } 3419 }
3092#endif
3093 3420
3094 postfork = 0; 3421 postfork = 0;
3095} 3422}
3096 3423
3097#if EV_MULTIPLICITY 3424#if EV_MULTIPLICITY
… …
3113} 3440}
3114 3441
3115#endif /* multiplicity */ 3442#endif /* multiplicity */
3116 3443
3117#if EV_VERIFY 3444#if EV_VERIFY
3118noinline ecb_cold 3445ecb_noinline ecb_cold
3119static void 3446static void
3120verify_watcher (EV_P_ W w) 3447verify_watcher (EV_P_ W w)
3121{ 3448{
3122 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3449 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
3123 3450
3124 if (w->pending) 3451 if (w->pending)
3125 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3452 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
3126} 3453}
3127 3454
3128noinline ecb_cold 3455ecb_noinline ecb_cold
3129static void 3456static void
3130verify_heap (EV_P_ ANHE *heap, int N) 3457verify_heap (EV_P_ ANHE *heap, int N)
3131{ 3458{
3132 int i; 3459 int i;
3133 3460
… …
3139 3466
3140 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3467 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
3141 } 3468 }
3142} 3469}
3143 3470
3144noinline ecb_cold 3471ecb_noinline ecb_cold
3145static void 3472static void
3146array_verify (EV_P_ W *ws, int cnt) 3473array_verify (EV_P_ W *ws, int cnt)
3147{ 3474{
3148 while (cnt--) 3475 while (cnt--)
3149 { 3476 {
… …
3298 count += pendingcnt [pri]; 3625 count += pendingcnt [pri];
3299 3626
3300 return count; 3627 return count;
3301} 3628}
3302 3629
3303noinline 3630ecb_noinline
3304void 3631void
3305ev_invoke_pending (EV_P) 3632ev_invoke_pending (EV_P)
3306{ 3633{
3307 pendingpri = NUMPRI; 3634 pendingpri = NUMPRI;
3308 3635
… …
3327/* make idle watchers pending. this handles the "call-idle */ 3654/* make idle watchers pending. this handles the "call-idle */
3328/* only when higher priorities are idle" logic */ 3655/* only when higher priorities are idle" logic */
3329inline_size void 3656inline_size void
3330idle_reify (EV_P) 3657idle_reify (EV_P)
3331{ 3658{
3332 if (expect_false (idleall)) 3659 if (ecb_expect_false (idleall))
3333 { 3660 {
3334 int pri; 3661 int pri;
3335 3662
3336 for (pri = NUMPRI; pri--; ) 3663 for (pri = NUMPRI; pri--; )
3337 { 3664 {
… …
3367 { 3694 {
3368 ev_at (w) += w->repeat; 3695 ev_at (w) += w->repeat;
3369 if (ev_at (w) < mn_now) 3696 if (ev_at (w) < mn_now)
3370 ev_at (w) = mn_now; 3697 ev_at (w) = mn_now;
3371 3698
3372 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 3699 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > EV_TS_CONST (0.)));
3373 3700
3374 ANHE_at_cache (timers [HEAP0]); 3701 ANHE_at_cache (timers [HEAP0]);
3375 downheap (timers, timercnt, HEAP0); 3702 downheap (timers, timercnt, HEAP0);
3376 } 3703 }
3377 else 3704 else
… …
3386 } 3713 }
3387} 3714}
3388 3715
3389#if EV_PERIODIC_ENABLE 3716#if EV_PERIODIC_ENABLE
3390 3717
3391noinline 3718ecb_noinline
3392static void 3719static void
3393periodic_recalc (EV_P_ ev_periodic *w) 3720periodic_recalc (EV_P_ ev_periodic *w)
3394{ 3721{
3395 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3722 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); 3723 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
… …
3399 while (at <= ev_rt_now) 3726 while (at <= ev_rt_now)
3400 { 3727 {
3401 ev_tstamp nat = at + w->interval; 3728 ev_tstamp nat = at + w->interval;
3402 3729
3403 /* when resolution fails us, we use ev_rt_now */ 3730 /* when resolution fails us, we use ev_rt_now */
3404 if (expect_false (nat == at)) 3731 if (ecb_expect_false (nat == at))
3405 { 3732 {
3406 at = ev_rt_now; 3733 at = ev_rt_now;
3407 break; 3734 break;
3408 } 3735 }
3409 3736
… …
3455 } 3782 }
3456} 3783}
3457 3784
3458/* simply recalculate all periodics */ 3785/* simply recalculate all periodics */
3459/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3786/* TODO: maybe ensure that at least one event happens when jumping forward? */
3460noinline ecb_cold 3787ecb_noinline ecb_cold
3461static void 3788static void
3462periodics_reschedule (EV_P) 3789periodics_reschedule (EV_P)
3463{ 3790{
3464 int i; 3791 int i;
3465 3792
… …
3479 reheap (periodics, periodiccnt); 3806 reheap (periodics, periodiccnt);
3480} 3807}
3481#endif 3808#endif
3482 3809
3483/* adjust all timers by a given offset */ 3810/* adjust all timers by a given offset */
3484noinline ecb_cold 3811ecb_noinline ecb_cold
3485static void 3812static void
3486timers_reschedule (EV_P_ ev_tstamp adjust) 3813timers_reschedule (EV_P_ ev_tstamp adjust)
3487{ 3814{
3488 int i; 3815 int i;
3489 3816
… …
3499/* also detect if there was a timejump, and act accordingly */ 3826/* also detect if there was a timejump, and act accordingly */
3500inline_speed void 3827inline_speed void
3501time_update (EV_P_ ev_tstamp max_block) 3828time_update (EV_P_ ev_tstamp max_block)
3502{ 3829{
3503#if EV_USE_MONOTONIC 3830#if EV_USE_MONOTONIC
3504 if (expect_true (have_monotonic)) 3831 if (ecb_expect_true (have_monotonic))
3505 { 3832 {
3506 int i; 3833 int i;
3507 ev_tstamp odiff = rtmn_diff; 3834 ev_tstamp odiff = rtmn_diff;
3508 3835
3509 mn_now = get_clock (); 3836 mn_now = get_clock ();
3510 3837
3511 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3838 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
3512 /* interpolate in the meantime */ 3839 /* interpolate in the meantime */
3513 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3840 if (ecb_expect_true (mn_now - now_floor < EV_TS_CONST (MIN_TIMEJUMP * .5)))
3514 { 3841 {
3515 ev_rt_now = rtmn_diff + mn_now; 3842 ev_rt_now = rtmn_diff + mn_now;
3516 return; 3843 return;
3517 } 3844 }
3518 3845
… …
3532 ev_tstamp diff; 3859 ev_tstamp diff;
3533 rtmn_diff = ev_rt_now - mn_now; 3860 rtmn_diff = ev_rt_now - mn_now;
3534 3861
3535 diff = odiff - rtmn_diff; 3862 diff = odiff - rtmn_diff;
3536 3863
3537 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP)) 3864 if (ecb_expect_true ((diff < EV_TS_CONST (0.) ? -diff : diff) < EV_TS_CONST (MIN_TIMEJUMP)))
3538 return; /* all is well */ 3865 return; /* all is well */
3539 3866
3540 ev_rt_now = ev_time (); 3867 ev_rt_now = ev_time ();
3541 mn_now = get_clock (); 3868 mn_now = get_clock ();
3542 now_floor = mn_now; 3869 now_floor = mn_now;
… …
3551 else 3878 else
3552#endif 3879#endif
3553 { 3880 {
3554 ev_rt_now = ev_time (); 3881 ev_rt_now = ev_time ();
3555 3882
3556 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 3883 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + EV_TS_CONST (MIN_TIMEJUMP)))
3557 { 3884 {
3558 /* adjust timers. this is easy, as the offset is the same for all of them */ 3885 /* 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); 3886 timers_reschedule (EV_A_ ev_rt_now - mn_now);
3560#if EV_PERIODIC_ENABLE 3887#if EV_PERIODIC_ENABLE
3561 periodics_reschedule (EV_A); 3888 periodics_reschedule (EV_A);
… …
3584#if EV_VERIFY >= 2 3911#if EV_VERIFY >= 2
3585 ev_verify (EV_A); 3912 ev_verify (EV_A);
3586#endif 3913#endif
3587 3914
3588#ifndef _WIN32 3915#ifndef _WIN32
3589 if (expect_false (curpid)) /* penalise the forking check even more */ 3916 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
3590 if (expect_false (getpid () != curpid)) 3917 if (ecb_expect_false (getpid () != curpid))
3591 { 3918 {
3592 curpid = getpid (); 3919 curpid = getpid ();
3593 postfork = 1; 3920 postfork = 1;
3594 } 3921 }
3595#endif 3922#endif
3596 3923
3597#if EV_FORK_ENABLE 3924#if EV_FORK_ENABLE
3598 /* we might have forked, so queue fork handlers */ 3925 /* we might have forked, so queue fork handlers */
3599 if (expect_false (postfork)) 3926 if (ecb_expect_false (postfork))
3600 if (forkcnt) 3927 if (forkcnt)
3601 { 3928 {
3602 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3929 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
3603 EV_INVOKE_PENDING; 3930 EV_INVOKE_PENDING;
3604 } 3931 }
3605#endif 3932#endif
3606 3933
3607#if EV_PREPARE_ENABLE 3934#if EV_PREPARE_ENABLE
3608 /* queue prepare watchers (and execute them) */ 3935 /* queue prepare watchers (and execute them) */
3609 if (expect_false (preparecnt)) 3936 if (ecb_expect_false (preparecnt))
3610 { 3937 {
3611 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3938 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
3612 EV_INVOKE_PENDING; 3939 EV_INVOKE_PENDING;
3613 } 3940 }
3614#endif 3941#endif
3615 3942
3616 if (expect_false (loop_done)) 3943 if (ecb_expect_false (loop_done))
3617 break; 3944 break;
3618 3945
3619 /* we might have forked, so reify kernel state if necessary */ 3946 /* we might have forked, so reify kernel state if necessary */
3620 if (expect_false (postfork)) 3947 if (ecb_expect_false (postfork))
3621 loop_fork (EV_A); 3948 loop_fork (EV_A);
3622 3949
3623 /* update fd-related kernel structures */ 3950 /* update fd-related kernel structures */
3624 fd_reify (EV_A); 3951 fd_reify (EV_A);
3625 3952
… …
3630 3957
3631 /* remember old timestamp for io_blocktime calculation */ 3958 /* remember old timestamp for io_blocktime calculation */
3632 ev_tstamp prev_mn_now = mn_now; 3959 ev_tstamp prev_mn_now = mn_now;
3633 3960
3634 /* update time to cancel out callback processing overhead */ 3961 /* update time to cancel out callback processing overhead */
3635 time_update (EV_A_ 1e100); 3962 time_update (EV_A_ EV_TS_CONST (EV_TSTAMP_HUGE));
3636 3963
3637 /* from now on, we want a pipe-wake-up */ 3964 /* from now on, we want a pipe-wake-up */
3638 pipe_write_wanted = 1; 3965 pipe_write_wanted = 1;
3639 3966
3640 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */ 3967 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3641 3968
3642 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) 3969 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
3643 { 3970 {
3644 waittime = MAX_BLOCKTIME; 3971 waittime = EV_TS_CONST (MAX_BLOCKTIME);
3645 3972
3646 if (timercnt) 3973 if (timercnt)
3647 { 3974 {
3648 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now; 3975 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
3649 if (waittime > to) waittime = to; 3976 if (waittime > to) waittime = to;
… …
3656 if (waittime > to) waittime = to; 3983 if (waittime > to) waittime = to;
3657 } 3984 }
3658#endif 3985#endif
3659 3986
3660 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3987 /* don't let timeouts decrease the waittime below timeout_blocktime */
3661 if (expect_false (waittime < timeout_blocktime)) 3988 if (ecb_expect_false (waittime < timeout_blocktime))
3662 waittime = timeout_blocktime; 3989 waittime = timeout_blocktime;
3663 3990
3664 /* at this point, we NEED to wait, so we have to ensure */ 3991 /* now there are two more special cases left, either we have
3665 /* to pass a minimum nonzero value to the backend */ 3992 * already-expired timers, so we should not sleep, or we have timers
3993 * that expire very soon, in which case we need to wait for a minimum
3994 * amount of time for some event loop backends.
3995 */
3666 if (expect_false (waittime < backend_mintime)) 3996 if (ecb_expect_false (waittime < backend_mintime))
3997 waittime = waittime <= EV_TS_CONST (0.)
3998 ? EV_TS_CONST (0.)
3667 waittime = backend_mintime; 3999 : backend_mintime;
3668 4000
3669 /* extra check because io_blocktime is commonly 0 */ 4001 /* extra check because io_blocktime is commonly 0 */
3670 if (expect_false (io_blocktime)) 4002 if (ecb_expect_false (io_blocktime))
3671 { 4003 {
3672 sleeptime = io_blocktime - (mn_now - prev_mn_now); 4004 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3673 4005
3674 if (sleeptime > waittime - backend_mintime) 4006 if (sleeptime > waittime - backend_mintime)
3675 sleeptime = waittime - backend_mintime; 4007 sleeptime = waittime - backend_mintime;
3676 4008
3677 if (expect_true (sleeptime > 0.)) 4009 if (ecb_expect_true (sleeptime > EV_TS_CONST (0.)))
3678 { 4010 {
3679 ev_sleep (sleeptime); 4011 ev_sleep (sleeptime);
3680 waittime -= sleeptime; 4012 waittime -= sleeptime;
3681 } 4013 }
3682 } 4014 }
… …
3696 { 4028 {
3697 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 4029 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); 4030 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3699 } 4031 }
3700 4032
3701
3702 /* update ev_rt_now, do magic */ 4033 /* update ev_rt_now, do magic */
3703 time_update (EV_A_ waittime + sleeptime); 4034 time_update (EV_A_ waittime + sleeptime);
3704 } 4035 }
3705 4036
3706 /* queue pending timers and reschedule them */ 4037 /* queue pending timers and reschedule them */
… …
3714 idle_reify (EV_A); 4045 idle_reify (EV_A);
3715#endif 4046#endif
3716 4047
3717#if EV_CHECK_ENABLE 4048#if EV_CHECK_ENABLE
3718 /* queue check watchers, to be executed first */ 4049 /* queue check watchers, to be executed first */
3719 if (expect_false (checkcnt)) 4050 if (ecb_expect_false (checkcnt))
3720 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 4051 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3721#endif 4052#endif
3722 4053
3723 EV_INVOKE_PENDING; 4054 EV_INVOKE_PENDING;
3724 } 4055 }
3725 while (expect_true ( 4056 while (ecb_expect_true (
3726 activecnt 4057 activecnt
3727 && !loop_done 4058 && !loop_done
3728 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) 4059 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
3729 )); 4060 ));
3730 4061
… …
3757} 4088}
3758 4089
3759void 4090void
3760ev_now_update (EV_P) EV_NOEXCEPT 4091ev_now_update (EV_P) EV_NOEXCEPT
3761{ 4092{
3762 time_update (EV_A_ 1e100); 4093 time_update (EV_A_ EV_TSTAMP_HUGE);
3763} 4094}
3764 4095
3765void 4096void
3766ev_suspend (EV_P) EV_NOEXCEPT 4097ev_suspend (EV_P) EV_NOEXCEPT
3767{ 4098{
… …
3794inline_size void 4125inline_size void
3795wlist_del (WL *head, WL elem) 4126wlist_del (WL *head, WL elem)
3796{ 4127{
3797 while (*head) 4128 while (*head)
3798 { 4129 {
3799 if (expect_true (*head == elem)) 4130 if (ecb_expect_true (*head == elem))
3800 { 4131 {
3801 *head = elem->next; 4132 *head = elem->next;
3802 break; 4133 break;
3803 } 4134 }
3804 4135
… …
3821ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT 4152ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
3822{ 4153{
3823 W w_ = (W)w; 4154 W w_ = (W)w;
3824 int pending = w_->pending; 4155 int pending = w_->pending;
3825 4156
3826 if (expect_true (pending)) 4157 if (ecb_expect_true (pending))
3827 { 4158 {
3828 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4159 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3829 p->w = (W)&pending_w; 4160 p->w = (W)&pending_w;
3830 w_->pending = 0; 4161 w_->pending = 0;
3831 return p->events; 4162 return p->events;
… …
3858 w->active = 0; 4189 w->active = 0;
3859} 4190}
3860 4191
3861/*****************************************************************************/ 4192/*****************************************************************************/
3862 4193
3863noinline 4194ecb_noinline
3864void 4195void
3865ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT 4196ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
3866{ 4197{
3867 int fd = w->fd; 4198 int fd = w->fd;
3868 4199
3869 if (expect_false (ev_is_active (w))) 4200 if (ecb_expect_false (ev_is_active (w)))
3870 return; 4201 return;
3871 4202
3872 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4203 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)))); 4204 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
3874 4205
4206#if EV_VERIFY >= 2
4207 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4208#endif
3875 EV_FREQUENT_CHECK; 4209 EV_FREQUENT_CHECK;
3876 4210
3877 ev_start (EV_A_ (W)w, 1); 4211 ev_start (EV_A_ (W)w, 1);
3878 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4212 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
3879 wlist_add (&anfds[fd].head, (WL)w); 4213 wlist_add (&anfds[fd].head, (WL)w);
3880 4214
3881 /* common bug, apparently */ 4215 /* common bug, apparently */
3882 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w)); 4216 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3883 4217
… …
3885 w->events &= ~EV__IOFDSET; 4219 w->events &= ~EV__IOFDSET;
3886 4220
3887 EV_FREQUENT_CHECK; 4221 EV_FREQUENT_CHECK;
3888} 4222}
3889 4223
3890noinline 4224ecb_noinline
3891void 4225void
3892ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT 4226ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
3893{ 4227{
3894 clear_pending (EV_A_ (W)w); 4228 clear_pending (EV_A_ (W)w);
3895 if (expect_false (!ev_is_active (w))) 4229 if (ecb_expect_false (!ev_is_active (w)))
3896 return; 4230 return;
3897 4231
3898 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4232 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
3899 4233
4234#if EV_VERIFY >= 2
4235 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4236#endif
3900 EV_FREQUENT_CHECK; 4237 EV_FREQUENT_CHECK;
3901 4238
3902 wlist_del (&anfds[w->fd].head, (WL)w); 4239 wlist_del (&anfds[w->fd].head, (WL)w);
3903 ev_stop (EV_A_ (W)w); 4240 ev_stop (EV_A_ (W)w);
3904 4241
3905 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 4242 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3906 4243
3907 EV_FREQUENT_CHECK; 4244 EV_FREQUENT_CHECK;
3908} 4245}
3909 4246
3910noinline 4247ecb_noinline
3911void 4248void
3912ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT 4249ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
3913{ 4250{
3914 if (expect_false (ev_is_active (w))) 4251 if (ecb_expect_false (ev_is_active (w)))
3915 return; 4252 return;
3916 4253
3917 ev_at (w) += mn_now; 4254 ev_at (w) += mn_now;
3918 4255
3919 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4256 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
3920 4257
3921 EV_FREQUENT_CHECK; 4258 EV_FREQUENT_CHECK;
3922 4259
3923 ++timercnt; 4260 ++timercnt;
3924 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4261 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
3925 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4262 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
3926 ANHE_w (timers [ev_active (w)]) = (WT)w; 4263 ANHE_w (timers [ev_active (w)]) = (WT)w;
3927 ANHE_at_cache (timers [ev_active (w)]); 4264 ANHE_at_cache (timers [ev_active (w)]);
3928 upheap (timers, ev_active (w)); 4265 upheap (timers, ev_active (w));
3929 4266
3930 EV_FREQUENT_CHECK; 4267 EV_FREQUENT_CHECK;
3931 4268
3932 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4269 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
3933} 4270}
3934 4271
3935noinline 4272ecb_noinline
3936void 4273void
3937ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT 4274ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
3938{ 4275{
3939 clear_pending (EV_A_ (W)w); 4276 clear_pending (EV_A_ (W)w);
3940 if (expect_false (!ev_is_active (w))) 4277 if (ecb_expect_false (!ev_is_active (w)))
3941 return; 4278 return;
3942 4279
3943 EV_FREQUENT_CHECK; 4280 EV_FREQUENT_CHECK;
3944 4281
3945 { 4282 {
… …
3947 4284
3948 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4285 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
3949 4286
3950 --timercnt; 4287 --timercnt;
3951 4288
3952 if (expect_true (active < timercnt + HEAP0)) 4289 if (ecb_expect_true (active < timercnt + HEAP0))
3953 { 4290 {
3954 timers [active] = timers [timercnt + HEAP0]; 4291 timers [active] = timers [timercnt + HEAP0];
3955 adjustheap (timers, timercnt, active); 4292 adjustheap (timers, timercnt, active);
3956 } 4293 }
3957 } 4294 }
… …
3961 ev_stop (EV_A_ (W)w); 4298 ev_stop (EV_A_ (W)w);
3962 4299
3963 EV_FREQUENT_CHECK; 4300 EV_FREQUENT_CHECK;
3964} 4301}
3965 4302
3966noinline 4303ecb_noinline
3967void 4304void
3968ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT 4305ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
3969{ 4306{
3970 EV_FREQUENT_CHECK; 4307 EV_FREQUENT_CHECK;
3971 4308
… …
3992} 4329}
3993 4330
3994ev_tstamp 4331ev_tstamp
3995ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT 4332ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
3996{ 4333{
3997 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4334 return ev_at (w) - (ev_is_active (w) ? mn_now : EV_TS_CONST (0.));
3998} 4335}
3999 4336
4000#if EV_PERIODIC_ENABLE 4337#if EV_PERIODIC_ENABLE
4001noinline 4338ecb_noinline
4002void 4339void
4003ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT 4340ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
4004{ 4341{
4005 if (expect_false (ev_is_active (w))) 4342 if (ecb_expect_false (ev_is_active (w)))
4006 return; 4343 return;
4344
4345#if EV_USE_TIMERFD
4346 if (timerfd == -2)
4347 evtimerfd_init (EV_A);
4348#endif
4007 4349
4008 if (w->reschedule_cb) 4350 if (w->reschedule_cb)
4009 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4351 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
4010 else if (w->interval) 4352 else if (w->interval)
4011 { 4353 {
… …
4017 4359
4018 EV_FREQUENT_CHECK; 4360 EV_FREQUENT_CHECK;
4019 4361
4020 ++periodiccnt; 4362 ++periodiccnt;
4021 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4363 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
4022 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4364 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
4023 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4365 ANHE_w (periodics [ev_active (w)]) = (WT)w;
4024 ANHE_at_cache (periodics [ev_active (w)]); 4366 ANHE_at_cache (periodics [ev_active (w)]);
4025 upheap (periodics, ev_active (w)); 4367 upheap (periodics, ev_active (w));
4026 4368
4027 EV_FREQUENT_CHECK; 4369 EV_FREQUENT_CHECK;
4028 4370
4029 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4371 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
4030} 4372}
4031 4373
4032noinline 4374ecb_noinline
4033void 4375void
4034ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT 4376ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
4035{ 4377{
4036 clear_pending (EV_A_ (W)w); 4378 clear_pending (EV_A_ (W)w);
4037 if (expect_false (!ev_is_active (w))) 4379 if (ecb_expect_false (!ev_is_active (w)))
4038 return; 4380 return;
4039 4381
4040 EV_FREQUENT_CHECK; 4382 EV_FREQUENT_CHECK;
4041 4383
4042 { 4384 {
… …
4044 4386
4045 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4387 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
4046 4388
4047 --periodiccnt; 4389 --periodiccnt;
4048 4390
4049 if (expect_true (active < periodiccnt + HEAP0)) 4391 if (ecb_expect_true (active < periodiccnt + HEAP0))
4050 { 4392 {
4051 periodics [active] = periodics [periodiccnt + HEAP0]; 4393 periodics [active] = periodics [periodiccnt + HEAP0];
4052 adjustheap (periodics, periodiccnt, active); 4394 adjustheap (periodics, periodiccnt, active);
4053 } 4395 }
4054 } 4396 }
… …
4056 ev_stop (EV_A_ (W)w); 4398 ev_stop (EV_A_ (W)w);
4057 4399
4058 EV_FREQUENT_CHECK; 4400 EV_FREQUENT_CHECK;
4059} 4401}
4060 4402
4061noinline 4403ecb_noinline
4062void 4404void
4063ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT 4405ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
4064{ 4406{
4065 /* TODO: use adjustheap and recalculation */ 4407 /* TODO: use adjustheap and recalculation */
4066 ev_periodic_stop (EV_A_ w); 4408 ev_periodic_stop (EV_A_ w);
… …
4072# define SA_RESTART 0 4414# define SA_RESTART 0
4073#endif 4415#endif
4074 4416
4075#if EV_SIGNAL_ENABLE 4417#if EV_SIGNAL_ENABLE
4076 4418
4077noinline 4419ecb_noinline
4078void 4420void
4079ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT 4421ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
4080{ 4422{
4081 if (expect_false (ev_is_active (w))) 4423 if (ecb_expect_false (ev_is_active (w)))
4082 return; 4424 return;
4083 4425
4084 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4426 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
4085 4427
4086#if EV_MULTIPLICITY 4428#if EV_MULTIPLICITY
… …
4155 } 4497 }
4156 4498
4157 EV_FREQUENT_CHECK; 4499 EV_FREQUENT_CHECK;
4158} 4500}
4159 4501
4160noinline 4502ecb_noinline
4161void 4503void
4162ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT 4504ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
4163{ 4505{
4164 clear_pending (EV_A_ (W)w); 4506 clear_pending (EV_A_ (W)w);
4165 if (expect_false (!ev_is_active (w))) 4507 if (ecb_expect_false (!ev_is_active (w)))
4166 return; 4508 return;
4167 4509
4168 EV_FREQUENT_CHECK; 4510 EV_FREQUENT_CHECK;
4169 4511
4170 wlist_del (&signals [w->signum - 1].head, (WL)w); 4512 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
4203ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT 4545ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
4204{ 4546{
4205#if EV_MULTIPLICITY 4547#if EV_MULTIPLICITY
4206 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4548 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
4207#endif 4549#endif
4208 if (expect_false (ev_is_active (w))) 4550 if (ecb_expect_false (ev_is_active (w)))
4209 return; 4551 return;
4210 4552
4211 EV_FREQUENT_CHECK; 4553 EV_FREQUENT_CHECK;
4212 4554
4213 ev_start (EV_A_ (W)w, 1); 4555 ev_start (EV_A_ (W)w, 1);
… …
4218 4560
4219void 4561void
4220ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT 4562ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
4221{ 4563{
4222 clear_pending (EV_A_ (W)w); 4564 clear_pending (EV_A_ (W)w);
4223 if (expect_false (!ev_is_active (w))) 4565 if (ecb_expect_false (!ev_is_active (w)))
4224 return; 4566 return;
4225 4567
4226 EV_FREQUENT_CHECK; 4568 EV_FREQUENT_CHECK;
4227 4569
4228 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); 4570 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
… …
4242 4584
4243#define DEF_STAT_INTERVAL 5.0074891 4585#define DEF_STAT_INTERVAL 5.0074891
4244#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4586#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
4245#define MIN_STAT_INTERVAL 0.1074891 4587#define MIN_STAT_INTERVAL 0.1074891
4246 4588
4247noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4589ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
4248 4590
4249#if EV_USE_INOTIFY 4591#if EV_USE_INOTIFY
4250 4592
4251/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4593/* 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) 4594# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
4253 4595
4254noinline 4596ecb_noinline
4255static void 4597static void
4256infy_add (EV_P_ ev_stat *w) 4598infy_add (EV_P_ ev_stat *w)
4257{ 4599{
4258 w->wd = inotify_add_watch (fs_fd, w->path, 4600 w->wd = inotify_add_watch (fs_fd, w->path,
4259 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY 4601 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
… …
4324 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4666 if (ev_is_active (&w->timer)) ev_ref (EV_A);
4325 ev_timer_again (EV_A_ &w->timer); 4667 ev_timer_again (EV_A_ &w->timer);
4326 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4668 if (ev_is_active (&w->timer)) ev_unref (EV_A);
4327} 4669}
4328 4670
4329noinline 4671ecb_noinline
4330static void 4672static void
4331infy_del (EV_P_ ev_stat *w) 4673infy_del (EV_P_ ev_stat *w)
4332{ 4674{
4333 int slot; 4675 int slot;
4334 int wd = w->wd; 4676 int wd = w->wd;
… …
4342 4684
4343 /* remove this watcher, if others are watching it, they will rearm */ 4685 /* remove this watcher, if others are watching it, they will rearm */
4344 inotify_rm_watch (fs_fd, wd); 4686 inotify_rm_watch (fs_fd, wd);
4345} 4687}
4346 4688
4347noinline 4689ecb_noinline
4348static void 4690static void
4349infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4691infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
4350{ 4692{
4351 if (slot < 0) 4693 if (slot < 0)
4352 /* overflow, need to check for all hash slots */ 4694 /* overflow, need to check for all hash slots */
… …
4498 w->attr.st_nlink = 0; 4840 w->attr.st_nlink = 0;
4499 else if (!w->attr.st_nlink) 4841 else if (!w->attr.st_nlink)
4500 w->attr.st_nlink = 1; 4842 w->attr.st_nlink = 1;
4501} 4843}
4502 4844
4503noinline 4845ecb_noinline
4504static void 4846static void
4505stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4847stat_timer_cb (EV_P_ ev_timer *w_, int revents)
4506{ 4848{
4507 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4849 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
4508 4850
… …
4542} 4884}
4543 4885
4544void 4886void
4545ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT 4887ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
4546{ 4888{
4547 if (expect_false (ev_is_active (w))) 4889 if (ecb_expect_false (ev_is_active (w)))
4548 return; 4890 return;
4549 4891
4550 ev_stat_stat (EV_A_ w); 4892 ev_stat_stat (EV_A_ w);
4551 4893
4552 if (w->interval < MIN_STAT_INTERVAL && w->interval) 4894 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
4574 4916
4575void 4917void
4576ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT 4918ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
4577{ 4919{
4578 clear_pending (EV_A_ (W)w); 4920 clear_pending (EV_A_ (W)w);
4579 if (expect_false (!ev_is_active (w))) 4921 if (ecb_expect_false (!ev_is_active (w)))
4580 return; 4922 return;
4581 4923
4582 EV_FREQUENT_CHECK; 4924 EV_FREQUENT_CHECK;
4583 4925
4584#if EV_USE_INOTIFY 4926#if EV_USE_INOTIFY
… …
4599 4941
4600#if EV_IDLE_ENABLE 4942#if EV_IDLE_ENABLE
4601void 4943void
4602ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT 4944ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
4603{ 4945{
4604 if (expect_false (ev_is_active (w))) 4946 if (ecb_expect_false (ev_is_active (w)))
4605 return; 4947 return;
4606 4948
4607 pri_adjust (EV_A_ (W)w); 4949 pri_adjust (EV_A_ (W)w);
4608 4950
4609 EV_FREQUENT_CHECK; 4951 EV_FREQUENT_CHECK;
… …
4612 int active = ++idlecnt [ABSPRI (w)]; 4954 int active = ++idlecnt [ABSPRI (w)];
4613 4955
4614 ++idleall; 4956 ++idleall;
4615 ev_start (EV_A_ (W)w, active); 4957 ev_start (EV_A_ (W)w, active);
4616 4958
4617 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4959 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
4618 idles [ABSPRI (w)][active - 1] = w; 4960 idles [ABSPRI (w)][active - 1] = w;
4619 } 4961 }
4620 4962
4621 EV_FREQUENT_CHECK; 4963 EV_FREQUENT_CHECK;
4622} 4964}
4623 4965
4624void 4966void
4625ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT 4967ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
4626{ 4968{
4627 clear_pending (EV_A_ (W)w); 4969 clear_pending (EV_A_ (W)w);
4628 if (expect_false (!ev_is_active (w))) 4970 if (ecb_expect_false (!ev_is_active (w)))
4629 return; 4971 return;
4630 4972
4631 EV_FREQUENT_CHECK; 4973 EV_FREQUENT_CHECK;
4632 4974
4633 { 4975 {
… …
4646 4988
4647#if EV_PREPARE_ENABLE 4989#if EV_PREPARE_ENABLE
4648void 4990void
4649ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT 4991ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
4650{ 4992{
4651 if (expect_false (ev_is_active (w))) 4993 if (ecb_expect_false (ev_is_active (w)))
4652 return; 4994 return;
4653 4995
4654 EV_FREQUENT_CHECK; 4996 EV_FREQUENT_CHECK;
4655 4997
4656 ev_start (EV_A_ (W)w, ++preparecnt); 4998 ev_start (EV_A_ (W)w, ++preparecnt);
4657 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4999 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
4658 prepares [preparecnt - 1] = w; 5000 prepares [preparecnt - 1] = w;
4659 5001
4660 EV_FREQUENT_CHECK; 5002 EV_FREQUENT_CHECK;
4661} 5003}
4662 5004
4663void 5005void
4664ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT 5006ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
4665{ 5007{
4666 clear_pending (EV_A_ (W)w); 5008 clear_pending (EV_A_ (W)w);
4667 if (expect_false (!ev_is_active (w))) 5009 if (ecb_expect_false (!ev_is_active (w)))
4668 return; 5010 return;
4669 5011
4670 EV_FREQUENT_CHECK; 5012 EV_FREQUENT_CHECK;
4671 5013
4672 { 5014 {
… …
4684 5026
4685#if EV_CHECK_ENABLE 5027#if EV_CHECK_ENABLE
4686void 5028void
4687ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT 5029ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
4688{ 5030{
4689 if (expect_false (ev_is_active (w))) 5031 if (ecb_expect_false (ev_is_active (w)))
4690 return; 5032 return;
4691 5033
4692 EV_FREQUENT_CHECK; 5034 EV_FREQUENT_CHECK;
4693 5035
4694 ev_start (EV_A_ (W)w, ++checkcnt); 5036 ev_start (EV_A_ (W)w, ++checkcnt);
4695 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 5037 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
4696 checks [checkcnt - 1] = w; 5038 checks [checkcnt - 1] = w;
4697 5039
4698 EV_FREQUENT_CHECK; 5040 EV_FREQUENT_CHECK;
4699} 5041}
4700 5042
4701void 5043void
4702ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT 5044ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
4703{ 5045{
4704 clear_pending (EV_A_ (W)w); 5046 clear_pending (EV_A_ (W)w);
4705 if (expect_false (!ev_is_active (w))) 5047 if (ecb_expect_false (!ev_is_active (w)))
4706 return; 5048 return;
4707 5049
4708 EV_FREQUENT_CHECK; 5050 EV_FREQUENT_CHECK;
4709 5051
4710 { 5052 {
… …
4719 EV_FREQUENT_CHECK; 5061 EV_FREQUENT_CHECK;
4720} 5062}
4721#endif 5063#endif
4722 5064
4723#if EV_EMBED_ENABLE 5065#if EV_EMBED_ENABLE
4724noinline 5066ecb_noinline
4725void 5067void
4726ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT 5068ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
4727{ 5069{
4728 ev_run (w->other, EVRUN_NOWAIT); 5070 ev_run (w->other, EVRUN_NOWAIT);
4729} 5071}
… …
4753 ev_run (EV_A_ EVRUN_NOWAIT); 5095 ev_run (EV_A_ EVRUN_NOWAIT);
4754 } 5096 }
4755 } 5097 }
4756} 5098}
4757 5099
5100#if EV_FORK_ENABLE
4758static void 5101static void
4759embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 5102embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
4760{ 5103{
4761 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 5104 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
4762 5105
… …
4769 ev_run (EV_A_ EVRUN_NOWAIT); 5112 ev_run (EV_A_ EVRUN_NOWAIT);
4770 } 5113 }
4771 5114
4772 ev_embed_start (EV_A_ w); 5115 ev_embed_start (EV_A_ w);
4773} 5116}
5117#endif
4774 5118
4775#if 0 5119#if 0
4776static void 5120static void
4777embed_idle_cb (EV_P_ ev_idle *idle, int revents) 5121embed_idle_cb (EV_P_ ev_idle *idle, int revents)
4778{ 5122{
… …
4781#endif 5125#endif
4782 5126
4783void 5127void
4784ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT 5128ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
4785{ 5129{
4786 if (expect_false (ev_is_active (w))) 5130 if (ecb_expect_false (ev_is_active (w)))
4787 return; 5131 return;
4788 5132
4789 { 5133 {
4790 EV_P = w->other; 5134 EV_P = w->other;
4791 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 5135 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
… …
4799 5143
4800 ev_prepare_init (&w->prepare, embed_prepare_cb); 5144 ev_prepare_init (&w->prepare, embed_prepare_cb);
4801 ev_set_priority (&w->prepare, EV_MINPRI); 5145 ev_set_priority (&w->prepare, EV_MINPRI);
4802 ev_prepare_start (EV_A_ &w->prepare); 5146 ev_prepare_start (EV_A_ &w->prepare);
4803 5147
5148#if EV_FORK_ENABLE
4804 ev_fork_init (&w->fork, embed_fork_cb); 5149 ev_fork_init (&w->fork, embed_fork_cb);
4805 ev_fork_start (EV_A_ &w->fork); 5150 ev_fork_start (EV_A_ &w->fork);
5151#endif
4806 5152
4807 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 5153 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
4808 5154
4809 ev_start (EV_A_ (W)w, 1); 5155 ev_start (EV_A_ (W)w, 1);
4810 5156
… …
4813 5159
4814void 5160void
4815ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT 5161ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
4816{ 5162{
4817 clear_pending (EV_A_ (W)w); 5163 clear_pending (EV_A_ (W)w);
4818 if (expect_false (!ev_is_active (w))) 5164 if (ecb_expect_false (!ev_is_active (w)))
4819 return; 5165 return;
4820 5166
4821 EV_FREQUENT_CHECK; 5167 EV_FREQUENT_CHECK;
4822 5168
4823 ev_io_stop (EV_A_ &w->io); 5169 ev_io_stop (EV_A_ &w->io);
4824 ev_prepare_stop (EV_A_ &w->prepare); 5170 ev_prepare_stop (EV_A_ &w->prepare);
5171#if EV_FORK_ENABLE
4825 ev_fork_stop (EV_A_ &w->fork); 5172 ev_fork_stop (EV_A_ &w->fork);
5173#endif
4826 5174
4827 ev_stop (EV_A_ (W)w); 5175 ev_stop (EV_A_ (W)w);
4828 5176
4829 EV_FREQUENT_CHECK; 5177 EV_FREQUENT_CHECK;
4830} 5178}
… …
4832 5180
4833#if EV_FORK_ENABLE 5181#if EV_FORK_ENABLE
4834void 5182void
4835ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT 5183ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
4836{ 5184{
4837 if (expect_false (ev_is_active (w))) 5185 if (ecb_expect_false (ev_is_active (w)))
4838 return; 5186 return;
4839 5187
4840 EV_FREQUENT_CHECK; 5188 EV_FREQUENT_CHECK;
4841 5189
4842 ev_start (EV_A_ (W)w, ++forkcnt); 5190 ev_start (EV_A_ (W)w, ++forkcnt);
4843 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5191 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
4844 forks [forkcnt - 1] = w; 5192 forks [forkcnt - 1] = w;
4845 5193
4846 EV_FREQUENT_CHECK; 5194 EV_FREQUENT_CHECK;
4847} 5195}
4848 5196
4849void 5197void
4850ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT 5198ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
4851{ 5199{
4852 clear_pending (EV_A_ (W)w); 5200 clear_pending (EV_A_ (W)w);
4853 if (expect_false (!ev_is_active (w))) 5201 if (ecb_expect_false (!ev_is_active (w)))
4854 return; 5202 return;
4855 5203
4856 EV_FREQUENT_CHECK; 5204 EV_FREQUENT_CHECK;
4857 5205
4858 { 5206 {
… …
4870 5218
4871#if EV_CLEANUP_ENABLE 5219#if EV_CLEANUP_ENABLE
4872void 5220void
4873ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT 5221ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4874{ 5222{
4875 if (expect_false (ev_is_active (w))) 5223 if (ecb_expect_false (ev_is_active (w)))
4876 return; 5224 return;
4877 5225
4878 EV_FREQUENT_CHECK; 5226 EV_FREQUENT_CHECK;
4879 5227
4880 ev_start (EV_A_ (W)w, ++cleanupcnt); 5228 ev_start (EV_A_ (W)w, ++cleanupcnt);
4881 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 5229 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
4882 cleanups [cleanupcnt - 1] = w; 5230 cleanups [cleanupcnt - 1] = w;
4883 5231
4884 /* cleanup watchers should never keep a refcount on the loop */ 5232 /* cleanup watchers should never keep a refcount on the loop */
4885 ev_unref (EV_A); 5233 ev_unref (EV_A);
4886 EV_FREQUENT_CHECK; 5234 EV_FREQUENT_CHECK;
… …
4888 5236
4889void 5237void
4890ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT 5238ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4891{ 5239{
4892 clear_pending (EV_A_ (W)w); 5240 clear_pending (EV_A_ (W)w);
4893 if (expect_false (!ev_is_active (w))) 5241 if (ecb_expect_false (!ev_is_active (w)))
4894 return; 5242 return;
4895 5243
4896 EV_FREQUENT_CHECK; 5244 EV_FREQUENT_CHECK;
4897 ev_ref (EV_A); 5245 ev_ref (EV_A);
4898 5246
… …
4911 5259
4912#if EV_ASYNC_ENABLE 5260#if EV_ASYNC_ENABLE
4913void 5261void
4914ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT 5262ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4915{ 5263{
4916 if (expect_false (ev_is_active (w))) 5264 if (ecb_expect_false (ev_is_active (w)))
4917 return; 5265 return;
4918 5266
4919 w->sent = 0; 5267 w->sent = 0;
4920 5268
4921 evpipe_init (EV_A); 5269 evpipe_init (EV_A);
4922 5270
4923 EV_FREQUENT_CHECK; 5271 EV_FREQUENT_CHECK;
4924 5272
4925 ev_start (EV_A_ (W)w, ++asynccnt); 5273 ev_start (EV_A_ (W)w, ++asynccnt);
4926 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5274 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
4927 asyncs [asynccnt - 1] = w; 5275 asyncs [asynccnt - 1] = w;
4928 5276
4929 EV_FREQUENT_CHECK; 5277 EV_FREQUENT_CHECK;
4930} 5278}
4931 5279
4932void 5280void
4933ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT 5281ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4934{ 5282{
4935 clear_pending (EV_A_ (W)w); 5283 clear_pending (EV_A_ (W)w);
4936 if (expect_false (!ev_is_active (w))) 5284 if (ecb_expect_false (!ev_is_active (w)))
4937 return; 5285 return;
4938 5286
4939 EV_FREQUENT_CHECK; 5287 EV_FREQUENT_CHECK;
4940 5288
4941 { 5289 {
… …
4999 5347
5000void 5348void
5001ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT 5349ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
5002{ 5350{
5003 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5351 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 5352
5011 once->cb = cb; 5353 once->cb = cb;
5012 once->arg = arg; 5354 once->arg = arg;
5013 5355
5014 ev_init (&once->io, once_cb_io); 5356 ev_init (&once->io, once_cb_io);

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