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Comparing libev/ev.c (file contents):
Revision 1.479 by root, Sun Dec 20 01:31:17 2015 UTC vs.
Revision 1.520 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
165#endif 190# endif
191
192#endif
193
194/* OS X, in its infinite idiocy, actually HARDCODES
195 * a limit of 1024 into their select. Where people have brains,
196 * OS X engineers apparently have a vacuum. Or maybe they were
197 * ordered to have a vacuum, or they do anything for money.
198 * This might help. Or not.
199 * Note that this must be defined early, as other include files
200 * will rely on this define as well.
201 */
202#define _DARWIN_UNLIMITED_SELECT 1
166 203
167#include <stdlib.h> 204#include <stdlib.h>
168#include <string.h> 205#include <string.h>
169#include <fcntl.h> 206#include <fcntl.h>
170#include <stddef.h> 207#include <stddef.h>
… …
208# ifndef EV_SELECT_IS_WINSOCKET 245# ifndef EV_SELECT_IS_WINSOCKET
209# define EV_SELECT_IS_WINSOCKET 1 246# define EV_SELECT_IS_WINSOCKET 1
210# endif 247# endif
211# undef EV_AVOID_STDIO 248# undef EV_AVOID_STDIO
212#endif 249#endif
213
214/* OS X, in its infinite idiocy, actually HARDCODES
215 * a limit of 1024 into their select. Where people have brains,
216 * OS X engineers apparently have a vacuum. Or maybe they were
217 * ordered to have a vacuum, or they do anything for money.
218 * This might help. Or not.
219 */
220#define _DARWIN_UNLIMITED_SELECT 1
221 250
222/* this block tries to deduce configuration from header-defined symbols and defaults */ 251/* this block tries to deduce configuration from header-defined symbols and defaults */
223 252
224/* try to deduce the maximum number of signals on this platform */ 253/* try to deduce the maximum number of signals on this platform */
225#if defined EV_NSIG 254#if defined EV_NSIG
… …
313 342
314#ifndef EV_USE_PORT 343#ifndef EV_USE_PORT
315# define EV_USE_PORT 0 344# define EV_USE_PORT 0
316#endif 345#endif
317 346
347#ifndef EV_USE_LINUXAIO
348# if __linux /* libev currently assumes linux/aio_abi.h is always available on linux */
349# define EV_USE_LINUXAIO 0 /* was: 1, always off by default */
350# else
351# define EV_USE_LINUXAIO 0
352# endif
353#endif
354
355#ifndef EV_USE_IOURING
356# if __linux /* later checks might disable again */
357# define EV_USE_IOURING 1
358# else
359# define EV_USE_IOURING 0
360# endif
361#endif
362
318#ifndef EV_USE_INOTIFY 363#ifndef EV_USE_INOTIFY
319# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 364# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
320# define EV_USE_INOTIFY EV_FEATURE_OS 365# define EV_USE_INOTIFY EV_FEATURE_OS
321# else 366# else
322# define EV_USE_INOTIFY 0 367# define EV_USE_INOTIFY 0
… …
345# else 390# else
346# define EV_USE_SIGNALFD 0 391# define EV_USE_SIGNALFD 0
347# endif 392# endif
348#endif 393#endif
349 394
395#ifndef EV_USE_TIMERFD
396# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 8))
397# define EV_USE_TIMERFD EV_FEATURE_OS
398# else
399# define EV_USE_TIMERFD 0
400# endif
401#endif
402
350#if 0 /* debugging */ 403#if 0 /* debugging */
351# define EV_VERIFY 3 404# define EV_VERIFY 3
352# define EV_USE_4HEAP 1 405# define EV_USE_4HEAP 1
353# define EV_HEAP_CACHE_AT 1 406# define EV_HEAP_CACHE_AT 1
354#endif 407#endif
… …
363 416
364#ifndef EV_HEAP_CACHE_AT 417#ifndef EV_HEAP_CACHE_AT
365# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 418# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
366#endif 419#endif
367 420
368#ifdef ANDROID 421#ifdef __ANDROID__
369/* supposedly, android doesn't typedef fd_mask */ 422/* supposedly, android doesn't typedef fd_mask */
370# undef EV_USE_SELECT 423# undef EV_USE_SELECT
371# define EV_USE_SELECT 0 424# define EV_USE_SELECT 0
372/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */ 425/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
373# undef EV_USE_CLOCK_SYSCALL 426# undef EV_USE_CLOCK_SYSCALL
… …
387# include <sys/syscall.h> 440# include <sys/syscall.h>
388# ifdef SYS_clock_gettime 441# ifdef SYS_clock_gettime
389# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 442# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
390# undef EV_USE_MONOTONIC 443# undef EV_USE_MONOTONIC
391# define EV_USE_MONOTONIC 1 444# define EV_USE_MONOTONIC 1
445# define EV_NEED_SYSCALL 1
392# else 446# else
393# undef EV_USE_CLOCK_SYSCALL 447# undef EV_USE_CLOCK_SYSCALL
394# define EV_USE_CLOCK_SYSCALL 0 448# define EV_USE_CLOCK_SYSCALL 0
395# endif 449# endif
396#endif 450#endif
… …
410#if !EV_STAT_ENABLE 464#if !EV_STAT_ENABLE
411# undef EV_USE_INOTIFY 465# undef EV_USE_INOTIFY
412# define EV_USE_INOTIFY 0 466# define EV_USE_INOTIFY 0
413#endif 467#endif
414 468
469#if __linux && EV_USE_IOURING
470# include <linux/version.h>
471# if LINUX_VERSION_CODE < KERNEL_VERSION(4,14,0)
472# undef EV_USE_IOURING
473# define EV_USE_IOURING 0
474# endif
475#endif
476
415#if !EV_USE_NANOSLEEP 477#if !EV_USE_NANOSLEEP
416/* hp-ux has it in sys/time.h, which we unconditionally include above */ 478/* hp-ux has it in sys/time.h, which we unconditionally include above */
417# if !defined _WIN32 && !defined __hpux 479# if !defined _WIN32 && !defined __hpux
418# include <sys/select.h> 480# include <sys/select.h>
481# endif
482#endif
483
484#if EV_USE_LINUXAIO
485# include <sys/syscall.h>
486# if SYS_io_getevents && EV_USE_EPOLL /* linuxaio backend requires epoll backend */
487# define EV_NEED_SYSCALL 1
488# else
489# undef EV_USE_LINUXAIO
490# define EV_USE_LINUXAIO 0
491# endif
492#endif
493
494#if EV_USE_IOURING
495# include <sys/syscall.h>
496# if !SYS_io_uring_setup && __linux && !__alpha
497# define SYS_io_uring_setup 425
498# define SYS_io_uring_enter 426
499# define SYS_io_uring_wregister 427
500# endif
501# if SYS_io_uring_setup && EV_USE_EPOLL /* iouring backend requires epoll backend */
502# define EV_NEED_SYSCALL 1
503# else
504# undef EV_USE_IOURING
505# define EV_USE_IOURING 0
419# endif 506# endif
420#endif 507#endif
421 508
422#if EV_USE_INOTIFY 509#if EV_USE_INOTIFY
423# include <sys/statfs.h> 510# include <sys/statfs.h>
… …
428# define EV_USE_INOTIFY 0 515# define EV_USE_INOTIFY 0
429# endif 516# endif
430#endif 517#endif
431 518
432#if EV_USE_EVENTFD 519#if EV_USE_EVENTFD
433/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 520/* our minimum requirement is glibc 2.7 which has the stub, but not the full header */
434# include <stdint.h> 521# include <stdint.h>
435# ifndef EFD_NONBLOCK 522# ifndef EFD_NONBLOCK
436# define EFD_NONBLOCK O_NONBLOCK 523# define EFD_NONBLOCK O_NONBLOCK
437# endif 524# endif
438# ifndef EFD_CLOEXEC 525# ifndef EFD_CLOEXEC
… …
444# endif 531# endif
445EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags); 532EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
446#endif 533#endif
447 534
448#if EV_USE_SIGNALFD 535#if EV_USE_SIGNALFD
449/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 536/* our minimum requirement is glibc 2.7 which has the stub, but not the full header */
450# include <stdint.h> 537# include <stdint.h>
451# ifndef SFD_NONBLOCK 538# ifndef SFD_NONBLOCK
452# define SFD_NONBLOCK O_NONBLOCK 539# define SFD_NONBLOCK O_NONBLOCK
453# endif 540# endif
454# ifndef SFD_CLOEXEC 541# ifndef SFD_CLOEXEC
… …
456# define SFD_CLOEXEC O_CLOEXEC 543# define SFD_CLOEXEC O_CLOEXEC
457# else 544# else
458# define SFD_CLOEXEC 02000000 545# define SFD_CLOEXEC 02000000
459# endif 546# endif
460# endif 547# endif
461EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags); 548EV_CPP (extern "C") int (signalfd) (int fd, const sigset_t *mask, int flags);
462 549
463struct signalfd_siginfo 550struct signalfd_siginfo
464{ 551{
465 uint32_t ssi_signo; 552 uint32_t ssi_signo;
466 char pad[128 - sizeof (uint32_t)]; 553 char pad[128 - sizeof (uint32_t)];
467}; 554};
468#endif 555#endif
469 556
470/**/ 557/* for timerfd, libev core requires TFD_TIMER_CANCEL_ON_SET &c */
558#if EV_USE_TIMERFD
559# include <sys/timerfd.h>
560/* timerfd is only used for periodics */
561# if !(defined (TFD_TIMER_CANCEL_ON_SET) && defined (TFD_CLOEXEC) && defined (TFD_NONBLOCK)) || !EV_PERIODIC_ENABLE
562# undef EV_USE_TIMERFD
563# define EV_USE_TIMERFD 0
564# endif
565#endif
566
567/*****************************************************************************/
471 568
472#if EV_VERIFY >= 3 569#if EV_VERIFY >= 3
473# define EV_FREQUENT_CHECK ev_verify (EV_A) 570# define EV_FREQUENT_CHECK ev_verify (EV_A)
474#else 571#else
475# define EV_FREQUENT_CHECK do { } while (0) 572# define EV_FREQUENT_CHECK do { } while (0)
… …
480 * This value is good at least till the year 4000. 577 * This value is good at least till the year 4000.
481 */ 578 */
482#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */ 579#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
483/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */ 580/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
484 581
485#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 582#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
486#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 583#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
487 584
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
488#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)
489#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
490 602
491/* 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 */
492/* ECB.H BEGIN */ 604/* ECB.H BEGIN */
493/* 605/*
494 * libecb - http://software.schmorp.de/pkg/libecb 606 * libecb - http://software.schmorp.de/pkg/libecb
… …
532 644
533#ifndef ECB_H 645#ifndef ECB_H
534#define ECB_H 646#define ECB_H
535 647
536/* 16 bits major, 16 bits minor */ 648/* 16 bits major, 16 bits minor */
537#define ECB_VERSION 0x00010005 649#define ECB_VERSION 0x00010006
538 650
539#ifdef _WIN32 651#ifdef _WIN32
540 typedef signed char int8_t; 652 typedef signed char int8_t;
541 typedef unsigned char uint8_t; 653 typedef unsigned char uint8_t;
542 typedef signed short int16_t; 654 typedef signed short int16_t;
… …
607 #define ECB_CLANG_EXTENSION(x) 0 719 #define ECB_CLANG_EXTENSION(x) 0
608#endif 720#endif
609 721
610#define ECB_CPP (__cplusplus+0) 722#define ECB_CPP (__cplusplus+0)
611#define ECB_CPP11 (__cplusplus >= 201103L) 723#define ECB_CPP11 (__cplusplus >= 201103L)
724#define ECB_CPP14 (__cplusplus >= 201402L)
725#define ECB_CPP17 (__cplusplus >= 201703L)
612 726
613#if ECB_CPP 727#if ECB_CPP
614 #define ECB_C 0 728 #define ECB_C 0
615 #define ECB_STDC_VERSION 0 729 #define ECB_STDC_VERSION 0
616#else 730#else
… …
618 #define ECB_STDC_VERSION __STDC_VERSION__ 732 #define ECB_STDC_VERSION __STDC_VERSION__
619#endif 733#endif
620 734
621#define ECB_C99 (ECB_STDC_VERSION >= 199901L) 735#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
622#define ECB_C11 (ECB_STDC_VERSION >= 201112L) 736#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
737#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
623 738
624#if ECB_CPP 739#if ECB_CPP
625 #define ECB_EXTERN_C extern "C" 740 #define ECB_EXTERN_C extern "C"
626 #define ECB_EXTERN_C_BEG ECB_EXTERN_C { 741 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
627 #define ECB_EXTERN_C_END } 742 #define ECB_EXTERN_C_END }
… …
653 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */ 768 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
654#endif 769#endif
655 770
656#ifndef ECB_MEMORY_FENCE 771#ifndef ECB_MEMORY_FENCE
657 #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")
658 #if __i386 || __i386__ 774 #if __i386 || __i386__
659 #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")
660 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") 776 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
661 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 777 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
662 #elif ECB_GCC_AMD64 778 #elif ECB_GCC_AMD64
663 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 779 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
664 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") 780 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
665 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 781 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
666 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 782 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
667 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 783 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
668 #elif defined __ARM_ARCH_2__ \ 784 #elif defined __ARM_ARCH_2__ \
669 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \ 785 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
670 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \ 786 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
… …
712 #if ECB_GCC_VERSION(4,7) 828 #if ECB_GCC_VERSION(4,7)
713 /* see comment below (stdatomic.h) about the C11 memory model. */ 829 /* see comment below (stdatomic.h) about the C11 memory model. */
714 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST) 830 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
715 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE) 831 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
716 #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)
717 834
718 #elif ECB_CLANG_EXTENSION(c_atomic) 835 #elif ECB_CLANG_EXTENSION(c_atomic)
719 /* see comment below (stdatomic.h) about the C11 memory model. */ 836 /* see comment below (stdatomic.h) about the C11 memory model. */
720 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) 837 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
721 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE) 838 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
722 #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)
723 841
724 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ 842 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
725 #define ECB_MEMORY_FENCE __sync_synchronize () 843 #define ECB_MEMORY_FENCE __sync_synchronize ()
726 #elif _MSC_VER >= 1500 /* VC++ 2008 */ 844 #elif _MSC_VER >= 1500 /* VC++ 2008 */
727 /* 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... */
… …
737 #elif defined _WIN32 855 #elif defined _WIN32
738 #include <WinNT.h> 856 #include <WinNT.h>
739 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ 857 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
740 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 858 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
741 #include <mbarrier.h> 859 #include <mbarrier.h>
742 #define ECB_MEMORY_FENCE __machine_rw_barrier () 860 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
743 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier () 861 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
744 #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 ()
745 #elif __xlC__ 864 #elif __xlC__
746 #define ECB_MEMORY_FENCE __sync () 865 #define ECB_MEMORY_FENCE __sync ()
747 #endif 866 #endif
748#endif 867#endif
749 868
750#ifndef ECB_MEMORY_FENCE 869#ifndef ECB_MEMORY_FENCE
751 #if ECB_C11 && !defined __STDC_NO_ATOMICS__ 870 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
752 /* 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, */
753 /* not just C11 atomics and atomic accesses */ 872 /* not just C11 atomics and atomic accesses */
754 #include <stdatomic.h> 873 #include <stdatomic.h>
755 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
756 /* any fence other than seq_cst, which isn't very efficient for us. */
757 /* Why that is, we don't know - either the C11 memory model is quite useless */
758 /* for most usages, or gcc and clang have a bug */
759 /* I *currently* lean towards the latter, and inefficiently implement */
760 /* all three of ecb's fences as a seq_cst fence */
761 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
762 /* for all __atomic_thread_fence's except seq_cst */
763 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst) 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)
764 #endif 877 #endif
765#endif 878#endif
766 879
767#ifndef ECB_MEMORY_FENCE 880#ifndef ECB_MEMORY_FENCE
768 #if !ECB_AVOID_PTHREADS 881 #if !ECB_AVOID_PTHREADS
… …
786 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 899 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
787#endif 900#endif
788 901
789#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE 902#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
790 #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 */
791#endif 908#endif
792 909
793/*****************************************************************************/ 910/*****************************************************************************/
794 911
795#if ECB_CPP 912#if ECB_CPP
… …
1504/* ECB.H END */ 1621/* ECB.H END */
1505 1622
1506#if ECB_MEMORY_FENCE_NEEDS_PTHREADS 1623#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1507/* 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
1508 * 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
1509 * 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
1510 * libev, in which cases the memory fences become nops. 1627 * libev, in which cases the memory fences become nops.
1511 * alternatively, you can remove this #error and link against libpthread, 1628 * alternatively, you can remove this #error and link against libpthread,
1512 * which will then provide the memory fences. 1629 * which will then provide the memory fences.
1513 */ 1630 */
1514# error "memory fences not defined for your architecture, please report" 1631# error "memory fences not defined for your architecture, please report"
… …
1518# define ECB_MEMORY_FENCE do { } while (0) 1635# define ECB_MEMORY_FENCE do { } while (0)
1519# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 1636# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1520# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 1637# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1521#endif 1638#endif
1522 1639
1523#define expect_false(cond) ecb_expect_false (cond)
1524#define expect_true(cond) ecb_expect_true (cond)
1525#define noinline ecb_noinline
1526
1527#define inline_size ecb_inline 1640#define inline_size ecb_inline
1528 1641
1529#if EV_FEATURE_CODE 1642#if EV_FEATURE_CODE
1530# define inline_speed ecb_inline 1643# define inline_speed ecb_inline
1531#else 1644#else
1532# define inline_speed static noinline 1645# define inline_speed ecb_noinline static
1533#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/*****************************************************************************/
1534 1713
1535#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1714#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
1536 1715
1537#if EV_MINPRI == EV_MAXPRI 1716#if EV_MINPRI == EV_MAXPRI
1538# define ABSPRI(w) (((W)w), 0) 1717# define ABSPRI(w) (((W)w), 0)
1539#else 1718#else
1540# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1719# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
1541#endif 1720#endif
1542 1721
1543#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1722#define EMPTY /* required for microsofts broken pseudo-c compiler */
1544#define EMPTY2(a,b) /* used to suppress some warnings */
1545 1723
1546typedef ev_watcher *W; 1724typedef ev_watcher *W;
1547typedef ev_watcher_list *WL; 1725typedef ev_watcher_list *WL;
1548typedef ev_watcher_time *WT; 1726typedef ev_watcher_time *WT;
1549 1727
… …
1574# include "ev_win32.c" 1752# include "ev_win32.c"
1575#endif 1753#endif
1576 1754
1577/*****************************************************************************/ 1755/*****************************************************************************/
1578 1756
1757#if EV_USE_LINUXAIO
1758# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1759#endif
1760
1579/* define a suitable floor function (only used by periodics atm) */ 1761/* define a suitable floor function (only used by periodics atm) */
1580 1762
1581#if EV_USE_FLOOR 1763#if EV_USE_FLOOR
1582# include <math.h> 1764# include <math.h>
1583# define ev_floor(v) floor (v) 1765# define ev_floor(v) floor (v)
1584#else 1766#else
1585 1767
1586#include <float.h> 1768#include <float.h>
1587 1769
1588/* a floor() replacement function, should be independent of ev_tstamp type */ 1770/* a floor() replacement function, should be independent of ev_tstamp type */
1771ecb_noinline
1589static ev_tstamp noinline 1772static ev_tstamp
1590ev_floor (ev_tstamp v) 1773ev_floor (ev_tstamp v)
1591{ 1774{
1592 /* the choice of shift factor is not terribly important */ 1775 /* the choice of shift factor is not terribly important */
1593#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1776#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1594 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1777 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1595#else 1778#else
1596 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; 1779 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1597#endif 1780#endif
1598 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
1599 /* argument too large for an unsigned long? */ 1790 /* argument too large for an unsigned long? then reduce it */
1600 if (expect_false (v >= shift)) 1791 if (ecb_expect_false (v >= shift))
1601 { 1792 {
1602 ev_tstamp f; 1793 ev_tstamp f;
1603 1794
1604 if (v == v - 1.) 1795 if (v == v - 1.)
1605 return v; /* very large number */ 1796 return v; /* very large numbers are assumed to be integer */
1606 1797
1607 f = shift * ev_floor (v * (1. / shift)); 1798 f = shift * ev_floor (v * (1. / shift));
1608 return f + ev_floor (v - f); 1799 return f + ev_floor (v - f);
1609 } 1800 }
1610 1801
1611 /* special treatment for negative args? */
1612 if (expect_false (v < 0.))
1613 {
1614 ev_tstamp f = -ev_floor (-v);
1615
1616 return f - (f == v ? 0 : 1);
1617 }
1618
1619 /* fits into an unsigned long */ 1802 /* fits into an unsigned long */
1620 return (unsigned long)v; 1803 return (unsigned long)v;
1621} 1804}
1622 1805
1623#endif 1806#endif
… …
1626 1809
1627#ifdef __linux 1810#ifdef __linux
1628# include <sys/utsname.h> 1811# include <sys/utsname.h>
1629#endif 1812#endif
1630 1813
1631static unsigned int noinline ecb_cold 1814ecb_noinline ecb_cold
1815static unsigned int
1632ev_linux_version (void) 1816ev_linux_version (void)
1633{ 1817{
1634#ifdef __linux 1818#ifdef __linux
1635 unsigned int v = 0; 1819 unsigned int v = 0;
1636 struct utsname buf; 1820 struct utsname buf;
… …
1665} 1849}
1666 1850
1667/*****************************************************************************/ 1851/*****************************************************************************/
1668 1852
1669#if EV_AVOID_STDIO 1853#if EV_AVOID_STDIO
1670static void noinline ecb_cold 1854ecb_noinline ecb_cold
1855static void
1671ev_printerr (const char *msg) 1856ev_printerr (const char *msg)
1672{ 1857{
1673 write (STDERR_FILENO, msg, strlen (msg)); 1858 write (STDERR_FILENO, msg, strlen (msg));
1674} 1859}
1675#endif 1860#endif
1676 1861
1677static void (*syserr_cb)(const char *msg) EV_THROW; 1862static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
1678 1863
1679void ecb_cold 1864ecb_cold
1865void
1680ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW 1866ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
1681{ 1867{
1682 syserr_cb = cb; 1868 syserr_cb = cb;
1683} 1869}
1684 1870
1685static void noinline ecb_cold 1871ecb_noinline ecb_cold
1872static void
1686ev_syserr (const char *msg) 1873ev_syserr (const char *msg)
1687{ 1874{
1688 if (!msg) 1875 if (!msg)
1689 msg = "(libev) system error"; 1876 msg = "(libev) system error";
1690 1877
… …
1703 abort (); 1890 abort ();
1704 } 1891 }
1705} 1892}
1706 1893
1707static void * 1894static void *
1708ev_realloc_emul (void *ptr, long size) EV_THROW 1895ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
1709{ 1896{
1710 /* some systems, notably openbsd and darwin, fail to properly 1897 /* some systems, notably openbsd and darwin, fail to properly
1711 * implement realloc (x, 0) (as required by both ansi c-89 and 1898 * implement realloc (x, 0) (as required by both ansi c-89 and
1712 * the single unix specification, so work around them here. 1899 * the single unix specification, so work around them here.
1713 * recently, also (at least) fedora and debian started breaking it, 1900 * recently, also (at least) fedora and debian started breaking it,
… …
1719 1906
1720 free (ptr); 1907 free (ptr);
1721 return 0; 1908 return 0;
1722} 1909}
1723 1910
1724static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul; 1911static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
1725 1912
1726void ecb_cold 1913ecb_cold
1914void
1727ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW 1915ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
1728{ 1916{
1729 alloc = cb; 1917 alloc = cb;
1730} 1918}
1731 1919
1732inline_speed void * 1920inline_speed void *
… …
1759typedef struct 1947typedef struct
1760{ 1948{
1761 WL head; 1949 WL head;
1762 unsigned char events; /* the events watched for */ 1950 unsigned char events; /* the events watched for */
1763 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) */
1764 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 */
1765 unsigned char unused; 1953 unsigned char eflags; /* flags field for use by backends */
1766#if EV_USE_EPOLL 1954#if EV_USE_EPOLL
1767 unsigned int egen; /* generation counter to counter epoll bugs */ 1955 unsigned int egen; /* generation counter to counter epoll bugs */
1768#endif 1956#endif
1769#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 1957#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1770 SOCKET handle; 1958 SOCKET handle;
… …
1824 static struct ev_loop default_loop_struct; 2012 static struct ev_loop default_loop_struct;
1825 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */ 2013 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
1826 2014
1827#else 2015#else
1828 2016
1829 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 */
1830 #define VAR(name,decl) static decl; 2018 #define VAR(name,decl) static decl;
1831 #include "ev_vars.h" 2019 #include "ev_vars.h"
1832 #undef VAR 2020 #undef VAR
1833 2021
1834 static int ev_default_loop_ptr; 2022 static int ev_default_loop_ptr;
1835 2023
1836#endif 2024#endif
1837 2025
1838#if EV_FEATURE_API 2026#if EV_FEATURE_API
1839# 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)
1840# 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)
1841# define EV_INVOKE_PENDING invoke_cb (EV_A) 2029# define EV_INVOKE_PENDING invoke_cb (EV_A)
1842#else 2030#else
1843# define EV_RELEASE_CB (void)0 2031# define EV_RELEASE_CB (void)0
1844# define EV_ACQUIRE_CB (void)0 2032# define EV_ACQUIRE_CB (void)0
1845# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 2033# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
… …
1849 2037
1850/*****************************************************************************/ 2038/*****************************************************************************/
1851 2039
1852#ifndef EV_HAVE_EV_TIME 2040#ifndef EV_HAVE_EV_TIME
1853ev_tstamp 2041ev_tstamp
1854ev_time (void) EV_THROW 2042ev_time (void) EV_NOEXCEPT
1855{ 2043{
1856#if EV_USE_REALTIME 2044#if EV_USE_REALTIME
1857 if (expect_true (have_realtime)) 2045 if (ecb_expect_true (have_realtime))
1858 { 2046 {
1859 struct timespec ts; 2047 struct timespec ts;
1860 clock_gettime (CLOCK_REALTIME, &ts); 2048 clock_gettime (CLOCK_REALTIME, &ts);
1861 return ts.tv_sec + ts.tv_nsec * 1e-9; 2049 return EV_TS_GET (ts);
1862 } 2050 }
1863#endif 2051#endif
1864 2052
2053 {
1865 struct timeval tv; 2054 struct timeval tv;
1866 gettimeofday (&tv, 0); 2055 gettimeofday (&tv, 0);
1867 return tv.tv_sec + tv.tv_usec * 1e-6; 2056 return EV_TV_GET (tv);
2057 }
1868} 2058}
1869#endif 2059#endif
1870 2060
1871inline_size ev_tstamp 2061inline_size ev_tstamp
1872get_clock (void) 2062get_clock (void)
1873{ 2063{
1874#if EV_USE_MONOTONIC 2064#if EV_USE_MONOTONIC
1875 if (expect_true (have_monotonic)) 2065 if (ecb_expect_true (have_monotonic))
1876 { 2066 {
1877 struct timespec ts; 2067 struct timespec ts;
1878 clock_gettime (CLOCK_MONOTONIC, &ts); 2068 clock_gettime (CLOCK_MONOTONIC, &ts);
1879 return ts.tv_sec + ts.tv_nsec * 1e-9; 2069 return EV_TS_GET (ts);
1880 } 2070 }
1881#endif 2071#endif
1882 2072
1883 return ev_time (); 2073 return ev_time ();
1884} 2074}
1885 2075
1886#if EV_MULTIPLICITY 2076#if EV_MULTIPLICITY
1887ev_tstamp 2077ev_tstamp
1888ev_now (EV_P) EV_THROW 2078ev_now (EV_P) EV_NOEXCEPT
1889{ 2079{
1890 return ev_rt_now; 2080 return ev_rt_now;
1891} 2081}
1892#endif 2082#endif
1893 2083
1894void 2084void
1895ev_sleep (ev_tstamp delay) EV_THROW 2085ev_sleep (ev_tstamp delay) EV_NOEXCEPT
1896{ 2086{
1897 if (delay > 0.) 2087 if (delay > EV_TS_CONST (0.))
1898 { 2088 {
1899#if EV_USE_NANOSLEEP 2089#if EV_USE_NANOSLEEP
1900 struct timespec ts; 2090 struct timespec ts;
1901 2091
1902 EV_TS_SET (ts, delay); 2092 EV_TS_SET (ts, delay);
1903 nanosleep (&ts, 0); 2093 nanosleep (&ts, 0);
1904#elif defined _WIN32 2094#elif defined _WIN32
2095 /* maybe this should round up, as ms is very low resolution */
2096 /* compared to select (µs) or nanosleep (ns) */
1905 Sleep ((unsigned long)(delay * 1e3)); 2097 Sleep ((unsigned long)(EV_TS_TO_MSEC (delay)));
1906#else 2098#else
1907 struct timeval tv; 2099 struct timeval tv;
1908 2100
1909 /* 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 */
1910 /* something not guaranteed by newer posix versions, but guaranteed */ 2102 /* something not guaranteed by newer posix versions, but guaranteed */
… …
1940 } 2132 }
1941 2133
1942 return ncur; 2134 return ncur;
1943} 2135}
1944 2136
1945static void * noinline ecb_cold 2137ecb_noinline ecb_cold
2138static void *
1946array_realloc (int elem, void *base, int *cur, int cnt) 2139array_realloc (int elem, void *base, int *cur, int cnt)
1947{ 2140{
1948 *cur = array_nextsize (elem, *cur, cnt); 2141 *cur = array_nextsize (elem, *cur, cnt);
1949 return ev_realloc (base, elem * *cur); 2142 return ev_realloc (base, elem * *cur);
1950} 2143}
1951 2144
2145#define array_needsize_noinit(base,offset,count)
2146
1952#define array_init_zero(base,count) \ 2147#define array_needsize_zerofill(base,offset,count) \
1953 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2148 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
1954 2149
1955#define array_needsize(type,base,cur,cnt,init) \ 2150#define array_needsize(type,base,cur,cnt,init) \
1956 if (expect_false ((cnt) > (cur))) \ 2151 if (ecb_expect_false ((cnt) > (cur))) \
1957 { \ 2152 { \
1958 int ecb_unused ocur_ = (cur); \ 2153 ecb_unused int ocur_ = (cur); \
1959 (base) = (type *)array_realloc \ 2154 (base) = (type *)array_realloc \
1960 (sizeof (type), (base), &(cur), (cnt)); \ 2155 (sizeof (type), (base), &(cur), (cnt)); \
1961 init ((base) + (ocur_), (cur) - ocur_); \ 2156 init ((base), ocur_, ((cur) - ocur_)); \
1962 } 2157 }
1963 2158
1964#if 0 2159#if 0
1965#define array_slim(type,stem) \ 2160#define array_slim(type,stem) \
1966 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2161 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
1975 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2170 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
1976 2171
1977/*****************************************************************************/ 2172/*****************************************************************************/
1978 2173
1979/* dummy callback for pending events */ 2174/* dummy callback for pending events */
1980static void noinline 2175ecb_noinline
2176static void
1981pendingcb (EV_P_ ev_prepare *w, int revents) 2177pendingcb (EV_P_ ev_prepare *w, int revents)
1982{ 2178{
1983} 2179}
1984 2180
1985void noinline 2181ecb_noinline
2182void
1986ev_feed_event (EV_P_ void *w, int revents) EV_THROW 2183ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
1987{ 2184{
1988 W w_ = (W)w; 2185 W w_ = (W)w;
1989 int pri = ABSPRI (w_); 2186 int pri = ABSPRI (w_);
1990 2187
1991 if (expect_false (w_->pending)) 2188 if (ecb_expect_false (w_->pending))
1992 pendings [pri][w_->pending - 1].events |= revents; 2189 pendings [pri][w_->pending - 1].events |= revents;
1993 else 2190 else
1994 { 2191 {
1995 w_->pending = ++pendingcnt [pri]; 2192 w_->pending = ++pendingcnt [pri];
1996 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2193 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
1997 pendings [pri][w_->pending - 1].w = w_; 2194 pendings [pri][w_->pending - 1].w = w_;
1998 pendings [pri][w_->pending - 1].events = revents; 2195 pendings [pri][w_->pending - 1].events = revents;
1999 } 2196 }
2000 2197
2001 pendingpri = NUMPRI - 1; 2198 pendingpri = NUMPRI - 1;
2002} 2199}
2003 2200
2004inline_speed void 2201inline_speed void
2005feed_reverse (EV_P_ W w) 2202feed_reverse (EV_P_ W w)
2006{ 2203{
2007 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2204 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
2008 rfeeds [rfeedcnt++] = w; 2205 rfeeds [rfeedcnt++] = w;
2009} 2206}
2010 2207
2011inline_size void 2208inline_size void
2012feed_reverse_done (EV_P_ int revents) 2209feed_reverse_done (EV_P_ int revents)
… …
2047inline_speed void 2244inline_speed void
2048fd_event (EV_P_ int fd, int revents) 2245fd_event (EV_P_ int fd, int revents)
2049{ 2246{
2050 ANFD *anfd = anfds + fd; 2247 ANFD *anfd = anfds + fd;
2051 2248
2052 if (expect_true (!anfd->reify)) 2249 if (ecb_expect_true (!anfd->reify))
2053 fd_event_nocheck (EV_A_ fd, revents); 2250 fd_event_nocheck (EV_A_ fd, revents);
2054} 2251}
2055 2252
2056void 2253void
2057ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW 2254ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
2058{ 2255{
2059 if (fd >= 0 && fd < anfdmax) 2256 if (fd >= 0 && fd < anfdmax)
2060 fd_event_nocheck (EV_A_ fd, revents); 2257 fd_event_nocheck (EV_A_ fd, revents);
2061} 2258}
2062 2259
… …
2065inline_size void 2262inline_size void
2066fd_reify (EV_P) 2263fd_reify (EV_P)
2067{ 2264{
2068 int i; 2265 int i;
2069 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
2070#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 2279#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
2071 for (i = 0; i < fdchangecnt; ++i) 2280 for (i = 0; i < changecnt; ++i)
2072 { 2281 {
2073 int fd = fdchanges [i]; 2282 int fd = fdchanges [i];
2074 ANFD *anfd = anfds + fd; 2283 ANFD *anfd = anfds + fd;
2075 2284
2076 if (anfd->reify & EV__IOFDSET && anfd->head) 2285 if (anfd->reify & EV__IOFDSET && anfd->head)
… …
2090 } 2299 }
2091 } 2300 }
2092 } 2301 }
2093#endif 2302#endif
2094 2303
2095 for (i = 0; i < fdchangecnt; ++i) 2304 for (i = 0; i < changecnt; ++i)
2096 { 2305 {
2097 int fd = fdchanges [i]; 2306 int fd = fdchanges [i];
2098 ANFD *anfd = anfds + fd; 2307 ANFD *anfd = anfds + fd;
2099 ev_io *w; 2308 ev_io *w;
2100 2309
2101 unsigned char o_events = anfd->events; 2310 unsigned char o_events = anfd->events;
2102 unsigned char o_reify = anfd->reify; 2311 unsigned char o_reify = anfd->reify;
2103 2312
2104 anfd->reify = 0; 2313 anfd->reify = 0;
2105 2314
2106 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 2315 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
2107 { 2316 {
2108 anfd->events = 0; 2317 anfd->events = 0;
2109 2318
2110 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)
2111 anfd->events |= (unsigned char)w->events; 2320 anfd->events |= (unsigned char)w->events;
… …
2116 2325
2117 if (o_reify & EV__IOFDSET) 2326 if (o_reify & EV__IOFDSET)
2118 backend_modify (EV_A_ fd, o_events, anfd->events); 2327 backend_modify (EV_A_ fd, o_events, anfd->events);
2119 } 2328 }
2120 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
2121 fdchangecnt = 0; 2337 fdchangecnt -= changecnt;
2122} 2338}
2123 2339
2124/* something about the given fd changed */ 2340/* something about the given fd changed */
2125inline_size void 2341inline_size
2342void
2126fd_change (EV_P_ int fd, int flags) 2343fd_change (EV_P_ int fd, int flags)
2127{ 2344{
2128 unsigned char reify = anfds [fd].reify; 2345 unsigned char reify = anfds [fd].reify;
2129 anfds [fd].reify |= flags; 2346 anfds [fd].reify |= flags;
2130 2347
2131 if (expect_true (!reify)) 2348 if (ecb_expect_true (!reify))
2132 { 2349 {
2133 ++fdchangecnt; 2350 ++fdchangecnt;
2134 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2351 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
2135 fdchanges [fdchangecnt - 1] = fd; 2352 fdchanges [fdchangecnt - 1] = fd;
2136 } 2353 }
2137} 2354}
2138 2355
2139/* 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 */
2140inline_speed void ecb_cold 2357inline_speed ecb_cold void
2141fd_kill (EV_P_ int fd) 2358fd_kill (EV_P_ int fd)
2142{ 2359{
2143 ev_io *w; 2360 ev_io *w;
2144 2361
2145 while ((w = (ev_io *)anfds [fd].head)) 2362 while ((w = (ev_io *)anfds [fd].head))
… …
2148 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2365 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
2149 } 2366 }
2150} 2367}
2151 2368
2152/* check whether the given fd is actually valid, for error recovery */ 2369/* check whether the given fd is actually valid, for error recovery */
2153inline_size int ecb_cold 2370inline_size ecb_cold int
2154fd_valid (int fd) 2371fd_valid (int fd)
2155{ 2372{
2156#ifdef _WIN32 2373#ifdef _WIN32
2157 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2374 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
2158#else 2375#else
2159 return fcntl (fd, F_GETFD) != -1; 2376 return fcntl (fd, F_GETFD) != -1;
2160#endif 2377#endif
2161} 2378}
2162 2379
2163/* called on EBADF to verify fds */ 2380/* called on EBADF to verify fds */
2164static void noinline ecb_cold 2381ecb_noinline ecb_cold
2382static void
2165fd_ebadf (EV_P) 2383fd_ebadf (EV_P)
2166{ 2384{
2167 int fd; 2385 int fd;
2168 2386
2169 for (fd = 0; fd < anfdmax; ++fd) 2387 for (fd = 0; fd < anfdmax; ++fd)
… …
2171 if (!fd_valid (fd) && errno == EBADF) 2389 if (!fd_valid (fd) && errno == EBADF)
2172 fd_kill (EV_A_ fd); 2390 fd_kill (EV_A_ fd);
2173} 2391}
2174 2392
2175/* 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 */
2176static void noinline ecb_cold 2394ecb_noinline ecb_cold
2395static void
2177fd_enomem (EV_P) 2396fd_enomem (EV_P)
2178{ 2397{
2179 int fd; 2398 int fd;
2180 2399
2181 for (fd = anfdmax; fd--; ) 2400 for (fd = anfdmax; fd--; )
… …
2185 break; 2404 break;
2186 } 2405 }
2187} 2406}
2188 2407
2189/* 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 */
2190static void noinline 2409ecb_noinline
2410static void
2191fd_rearm_all (EV_P) 2411fd_rearm_all (EV_P)
2192{ 2412{
2193 int fd; 2413 int fd;
2194 2414
2195 for (fd = 0; fd < anfdmax; ++fd) 2415 for (fd = 0; fd < anfdmax; ++fd)
… …
2248 ev_tstamp minat; 2468 ev_tstamp minat;
2249 ANHE *minpos; 2469 ANHE *minpos;
2250 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2470 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
2251 2471
2252 /* find minimum child */ 2472 /* find minimum child */
2253 if (expect_true (pos + DHEAP - 1 < E)) 2473 if (ecb_expect_true (pos + DHEAP - 1 < E))
2254 { 2474 {
2255 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2475 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
2256 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));
2257 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));
2258 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));
2259 } 2479 }
2260 else if (pos < E) 2480 else if (pos < E)
2261 { 2481 {
2262 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2482 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
2263 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2483 if (pos + 1 < E && minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
2264 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2484 if (pos + 2 < E && minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
2265 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2485 if (pos + 3 < E && minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
2266 } 2486 }
2267 else 2487 else
2268 break; 2488 break;
2269 2489
2270 if (ANHE_at (he) <= minat) 2490 if (ANHE_at (he) <= minat)
… …
2278 2498
2279 heap [k] = he; 2499 heap [k] = he;
2280 ev_active (ANHE_w (he)) = k; 2500 ev_active (ANHE_w (he)) = k;
2281} 2501}
2282 2502
2283#else /* 4HEAP */ 2503#else /* not 4HEAP */
2284 2504
2285#define HEAP0 1 2505#define HEAP0 1
2286#define HPARENT(k) ((k) >> 1) 2506#define HPARENT(k) ((k) >> 1)
2287#define UPHEAP_DONE(p,k) (!(p)) 2507#define UPHEAP_DONE(p,k) (!(p))
2288 2508
… …
2376 2596
2377/*****************************************************************************/ 2597/*****************************************************************************/
2378 2598
2379#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2599#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2380 2600
2381static void noinline ecb_cold 2601ecb_noinline ecb_cold
2602static void
2382evpipe_init (EV_P) 2603evpipe_init (EV_P)
2383{ 2604{
2384 if (!ev_is_active (&pipe_w)) 2605 if (!ev_is_active (&pipe_w))
2385 { 2606 {
2386 int fds [2]; 2607 int fds [2];
… …
2426inline_speed void 2647inline_speed void
2427evpipe_write (EV_P_ EV_ATOMIC_T *flag) 2648evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2428{ 2649{
2429 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 */
2430 2651
2431 if (expect_true (*flag)) 2652 if (ecb_expect_true (*flag))
2432 return; 2653 return;
2433 2654
2434 *flag = 1; 2655 *flag = 1;
2435 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 */
2436 2657
… …
2457#endif 2678#endif
2458 { 2679 {
2459#ifdef _WIN32 2680#ifdef _WIN32
2460 WSABUF buf; 2681 WSABUF buf;
2461 DWORD sent; 2682 DWORD sent;
2462 buf.buf = &buf; 2683 buf.buf = (char *)&buf;
2463 buf.len = 1; 2684 buf.len = 1;
2464 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0); 2685 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2465#else 2686#else
2466 write (evpipe [1], &(evpipe [1]), 1); 2687 write (evpipe [1], &(evpipe [1]), 1);
2467#endif 2688#endif
… …
2513 sig_pending = 0; 2734 sig_pending = 0;
2514 2735
2515 ECB_MEMORY_FENCE; 2736 ECB_MEMORY_FENCE;
2516 2737
2517 for (i = EV_NSIG - 1; i--; ) 2738 for (i = EV_NSIG - 1; i--; )
2518 if (expect_false (signals [i].pending)) 2739 if (ecb_expect_false (signals [i].pending))
2519 ev_feed_signal_event (EV_A_ i + 1); 2740 ev_feed_signal_event (EV_A_ i + 1);
2520 } 2741 }
2521#endif 2742#endif
2522 2743
2523#if EV_ASYNC_ENABLE 2744#if EV_ASYNC_ENABLE
… …
2539} 2760}
2540 2761
2541/*****************************************************************************/ 2762/*****************************************************************************/
2542 2763
2543void 2764void
2544ev_feed_signal (int signum) EV_THROW 2765ev_feed_signal (int signum) EV_NOEXCEPT
2545{ 2766{
2546#if EV_MULTIPLICITY 2767#if EV_MULTIPLICITY
2547 EV_P; 2768 EV_P;
2548 ECB_MEMORY_FENCE_ACQUIRE; 2769 ECB_MEMORY_FENCE_ACQUIRE;
2549 EV_A = signals [signum - 1].loop; 2770 EV_A = signals [signum - 1].loop;
… …
2564#endif 2785#endif
2565 2786
2566 ev_feed_signal (signum); 2787 ev_feed_signal (signum);
2567} 2788}
2568 2789
2569void noinline 2790ecb_noinline
2791void
2570ev_feed_signal_event (EV_P_ int signum) EV_THROW 2792ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
2571{ 2793{
2572 WL w; 2794 WL w;
2573 2795
2574 if (expect_false (signum <= 0 || signum >= EV_NSIG)) 2796 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
2575 return; 2797 return;
2576 2798
2577 --signum; 2799 --signum;
2578 2800
2579#if EV_MULTIPLICITY 2801#if EV_MULTIPLICITY
2580 /* 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 */
2581 /* or, likely more useful, feeding a signal nobody is waiting for */ 2803 /* or, likely more useful, feeding a signal nobody is waiting for */
2582 2804
2583 if (expect_false (signals [signum].loop != EV_A)) 2805 if (ecb_expect_false (signals [signum].loop != EV_A))
2584 return; 2806 return;
2585#endif 2807#endif
2586 2808
2587 signals [signum].pending = 0; 2809 signals [signum].pending = 0;
2588 ECB_MEMORY_FENCE_RELEASE; 2810 ECB_MEMORY_FENCE_RELEASE;
… …
2672 2894
2673#endif 2895#endif
2674 2896
2675/*****************************************************************************/ 2897/*****************************************************************************/
2676 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
2677#if EV_USE_IOCP 2951#if EV_USE_IOCP
2678# include "ev_iocp.c" 2952# include "ev_iocp.c"
2679#endif 2953#endif
2680#if EV_USE_PORT 2954#if EV_USE_PORT
2681# include "ev_port.c" 2955# include "ev_port.c"
… …
2684# include "ev_kqueue.c" 2958# include "ev_kqueue.c"
2685#endif 2959#endif
2686#if EV_USE_EPOLL 2960#if EV_USE_EPOLL
2687# include "ev_epoll.c" 2961# include "ev_epoll.c"
2688#endif 2962#endif
2963#if EV_USE_LINUXAIO
2964# include "ev_linuxaio.c"
2965#endif
2966#if EV_USE_IOURING
2967# include "ev_iouring.c"
2968#endif
2689#if EV_USE_POLL 2969#if EV_USE_POLL
2690# include "ev_poll.c" 2970# include "ev_poll.c"
2691#endif 2971#endif
2692#if EV_USE_SELECT 2972#if EV_USE_SELECT
2693# include "ev_select.c" 2973# include "ev_select.c"
2694#endif 2974#endif
2695 2975
2696int ecb_cold 2976ecb_cold int
2697ev_version_major (void) EV_THROW 2977ev_version_major (void) EV_NOEXCEPT
2698{ 2978{
2699 return EV_VERSION_MAJOR; 2979 return EV_VERSION_MAJOR;
2700} 2980}
2701 2981
2702int ecb_cold 2982ecb_cold int
2703ev_version_minor (void) EV_THROW 2983ev_version_minor (void) EV_NOEXCEPT
2704{ 2984{
2705 return EV_VERSION_MINOR; 2985 return EV_VERSION_MINOR;
2706} 2986}
2707 2987
2708/* return true if we are running with elevated privileges and should ignore env variables */ 2988/* return true if we are running with elevated privileges and should ignore env variables */
2709int inline_size ecb_cold 2989inline_size ecb_cold int
2710enable_secure (void) 2990enable_secure (void)
2711{ 2991{
2712#ifdef _WIN32 2992#ifdef _WIN32
2713 return 0; 2993 return 0;
2714#else 2994#else
2715 return getuid () != geteuid () 2995 return getuid () != geteuid ()
2716 || getgid () != getegid (); 2996 || getgid () != getegid ();
2717#endif 2997#endif
2718} 2998}
2719 2999
2720unsigned int ecb_cold 3000ecb_cold
3001unsigned int
2721ev_supported_backends (void) EV_THROW 3002ev_supported_backends (void) EV_NOEXCEPT
2722{ 3003{
2723 unsigned int flags = 0; 3004 unsigned int flags = 0;
2724 3005
2725 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 3006 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2726 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 3007 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
2727 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 3008 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2728 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 3009 if (EV_USE_LINUXAIO ) flags |= EVBACKEND_LINUXAIO;
2729 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 3010 if (EV_USE_IOURING && ev_linux_version () >= 0x050601) flags |= EVBACKEND_IOURING; /* 5.6.1+ */
2730 3011 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
3012 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
3013
2731 return flags; 3014 return flags;
2732} 3015}
2733 3016
2734unsigned int ecb_cold 3017ecb_cold
3018unsigned int
2735ev_recommended_backends (void) EV_THROW 3019ev_recommended_backends (void) EV_NOEXCEPT
2736{ 3020{
2737 unsigned int flags = ev_supported_backends (); 3021 unsigned int flags = ev_supported_backends ();
2738 3022
2739#ifndef __NetBSD__ 3023#ifndef __NetBSD__
2740 /* kqueue is borked on everything but netbsd apparently */ 3024 /* kqueue is borked on everything but netbsd apparently */
… …
2748#endif 3032#endif
2749#ifdef __FreeBSD__ 3033#ifdef __FreeBSD__
2750 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) */
2751#endif 3035#endif
2752 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
2753 return flags; 3046 return flags;
2754} 3047}
2755 3048
2756unsigned int ecb_cold 3049ecb_cold
3050unsigned int
2757ev_embeddable_backends (void) EV_THROW 3051ev_embeddable_backends (void) EV_NOEXCEPT
2758{ 3052{
2759 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 3053 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2760 3054
2761 /* 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 */
2762 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 */
2763 flags &= ~EVBACKEND_EPOLL; 3057 flags &= ~EVBACKEND_EPOLL;
2764 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
2765 return flags; 3066 return flags;
2766} 3067}
2767 3068
2768unsigned int 3069unsigned int
2769ev_backend (EV_P) EV_THROW 3070ev_backend (EV_P) EV_NOEXCEPT
2770{ 3071{
2771 return backend; 3072 return backend;
2772} 3073}
2773 3074
2774#if EV_FEATURE_API 3075#if EV_FEATURE_API
2775unsigned int 3076unsigned int
2776ev_iteration (EV_P) EV_THROW 3077ev_iteration (EV_P) EV_NOEXCEPT
2777{ 3078{
2778 return loop_count; 3079 return loop_count;
2779} 3080}
2780 3081
2781unsigned int 3082unsigned int
2782ev_depth (EV_P) EV_THROW 3083ev_depth (EV_P) EV_NOEXCEPT
2783{ 3084{
2784 return loop_depth; 3085 return loop_depth;
2785} 3086}
2786 3087
2787void 3088void
2788ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW 3089ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2789{ 3090{
2790 io_blocktime = interval; 3091 io_blocktime = interval;
2791} 3092}
2792 3093
2793void 3094void
2794ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW 3095ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2795{ 3096{
2796 timeout_blocktime = interval; 3097 timeout_blocktime = interval;
2797} 3098}
2798 3099
2799void 3100void
2800ev_set_userdata (EV_P_ void *data) EV_THROW 3101ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2801{ 3102{
2802 userdata = data; 3103 userdata = data;
2803} 3104}
2804 3105
2805void * 3106void *
2806ev_userdata (EV_P) EV_THROW 3107ev_userdata (EV_P) EV_NOEXCEPT
2807{ 3108{
2808 return userdata; 3109 return userdata;
2809} 3110}
2810 3111
2811void 3112void
2812ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW 3113ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
2813{ 3114{
2814 invoke_cb = invoke_pending_cb; 3115 invoke_cb = invoke_pending_cb;
2815} 3116}
2816 3117
2817void 3118void
2818ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW 3119ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
2819{ 3120{
2820 release_cb = release; 3121 release_cb = release;
2821 acquire_cb = acquire; 3122 acquire_cb = acquire;
2822} 3123}
2823#endif 3124#endif
2824 3125
2825/* initialise a loop structure, must be zero-initialised */ 3126/* initialise a loop structure, must be zero-initialised */
2826static void noinline ecb_cold 3127ecb_noinline ecb_cold
3128static void
2827loop_init (EV_P_ unsigned int flags) EV_THROW 3129loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
2828{ 3130{
2829 if (!backend) 3131 if (!backend)
2830 { 3132 {
2831 origflags = flags; 3133 origflags = flags;
2832 3134
… …
2885 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3187 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2886#endif 3188#endif
2887#if EV_USE_SIGNALFD 3189#if EV_USE_SIGNALFD
2888 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 3190 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2889#endif 3191#endif
3192#if EV_USE_TIMERFD
3193 timerfd = flags & EVFLAG_NOTIMERFD ? -1 : -2;
3194#endif
2890 3195
2891 if (!(flags & EVBACKEND_MASK)) 3196 if (!(flags & EVBACKEND_MASK))
2892 flags |= ev_recommended_backends (); 3197 flags |= ev_recommended_backends ();
2893 3198
2894#if EV_USE_IOCP 3199#if EV_USE_IOCP
2895 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 3200 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2896#endif 3201#endif
2897#if EV_USE_PORT 3202#if EV_USE_PORT
2898 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3203 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
2899#endif 3204#endif
2900#if EV_USE_KQUEUE 3205#if EV_USE_KQUEUE
2901 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);
2902#endif 3213#endif
2903#if EV_USE_EPOLL 3214#if EV_USE_EPOLL
2904 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3215 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
2905#endif 3216#endif
2906#if EV_USE_POLL 3217#if EV_USE_POLL
2907 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3218 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
2908#endif 3219#endif
2909#if EV_USE_SELECT 3220#if EV_USE_SELECT
2910 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3221 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
2911#endif 3222#endif
2912 3223
2913 ev_prepare_init (&pending_w, pendingcb); 3224 ev_prepare_init (&pending_w, pendingcb);
2914 3225
2915#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3226#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
2918#endif 3229#endif
2919 } 3230 }
2920} 3231}
2921 3232
2922/* free up a loop structure */ 3233/* free up a loop structure */
2923void ecb_cold 3234ecb_cold
3235void
2924ev_loop_destroy (EV_P) 3236ev_loop_destroy (EV_P)
2925{ 3237{
2926 int i; 3238 int i;
2927 3239
2928#if EV_MULTIPLICITY 3240#if EV_MULTIPLICITY
… …
2931 return; 3243 return;
2932#endif 3244#endif
2933 3245
2934#if EV_CLEANUP_ENABLE 3246#if EV_CLEANUP_ENABLE
2935 /* queue cleanup watchers (and execute them) */ 3247 /* queue cleanup watchers (and execute them) */
2936 if (expect_false (cleanupcnt)) 3248 if (ecb_expect_false (cleanupcnt))
2937 { 3249 {
2938 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); 3250 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2939 EV_INVOKE_PENDING; 3251 EV_INVOKE_PENDING;
2940 } 3252 }
2941#endif 3253#endif
… …
2960#if EV_USE_SIGNALFD 3272#if EV_USE_SIGNALFD
2961 if (ev_is_active (&sigfd_w)) 3273 if (ev_is_active (&sigfd_w))
2962 close (sigfd); 3274 close (sigfd);
2963#endif 3275#endif
2964 3276
3277#if EV_USE_TIMERFD
3278 if (ev_is_active (&timerfd_w))
3279 close (timerfd);
3280#endif
3281
2965#if EV_USE_INOTIFY 3282#if EV_USE_INOTIFY
2966 if (fs_fd >= 0) 3283 if (fs_fd >= 0)
2967 close (fs_fd); 3284 close (fs_fd);
2968#endif 3285#endif
2969 3286
2970 if (backend_fd >= 0) 3287 if (backend_fd >= 0)
2971 close (backend_fd); 3288 close (backend_fd);
2972 3289
2973#if EV_USE_IOCP 3290#if EV_USE_IOCP
2974 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3291 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2975#endif 3292#endif
2976#if EV_USE_PORT 3293#if EV_USE_PORT
2977 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3294 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
2978#endif 3295#endif
2979#if EV_USE_KQUEUE 3296#if EV_USE_KQUEUE
2980 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);
2981#endif 3304#endif
2982#if EV_USE_EPOLL 3305#if EV_USE_EPOLL
2983 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3306 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
2984#endif 3307#endif
2985#if EV_USE_POLL 3308#if EV_USE_POLL
2986 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3309 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
2987#endif 3310#endif
2988#if EV_USE_SELECT 3311#if EV_USE_SELECT
2989 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3312 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
2990#endif 3313#endif
2991 3314
2992 for (i = NUMPRI; i--; ) 3315 for (i = NUMPRI; i--; )
2993 { 3316 {
2994 array_free (pending, [i]); 3317 array_free (pending, [i]);
… …
3036 3359
3037inline_size void 3360inline_size void
3038loop_fork (EV_P) 3361loop_fork (EV_P)
3039{ 3362{
3040#if EV_USE_PORT 3363#if EV_USE_PORT
3041 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3364 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
3042#endif 3365#endif
3043#if EV_USE_KQUEUE 3366#if EV_USE_KQUEUE
3044 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);
3045#endif 3374#endif
3046#if EV_USE_EPOLL 3375#if EV_USE_EPOLL
3047 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3376 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
3048#endif 3377#endif
3049#if EV_USE_INOTIFY 3378#if EV_USE_INOTIFY
3050 infy_fork (EV_A); 3379 infy_fork (EV_A);
3051#endif 3380#endif
3052 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
3053#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3403 #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
3054 if (ev_is_active (&pipe_w) && postfork != 2) 3404 if (ev_is_active (&pipe_w))
3055 { 3405 {
3056 /* 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 */
3057 3407
3058 ev_ref (EV_A); 3408 ev_ref (EV_A);
3059 ev_io_stop (EV_A_ &pipe_w); 3409 ev_io_stop (EV_A_ &pipe_w);
3060 3410
3061 if (evpipe [0] >= 0) 3411 if (evpipe [0] >= 0)
3062 EV_WIN32_CLOSE_FD (evpipe [0]); 3412 EV_WIN32_CLOSE_FD (evpipe [0]);
3063 3413
3064 evpipe_init (EV_A); 3414 evpipe_init (EV_A);
3065 /* iterate over everything, in case we missed something before */ 3415 /* iterate over everything, in case we missed something before */
3066 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3416 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3417 }
3418 #endif
3067 } 3419 }
3068#endif
3069 3420
3070 postfork = 0; 3421 postfork = 0;
3071} 3422}
3072 3423
3073#if EV_MULTIPLICITY 3424#if EV_MULTIPLICITY
3074 3425
3426ecb_cold
3075struct ev_loop * ecb_cold 3427struct ev_loop *
3076ev_loop_new (unsigned int flags) EV_THROW 3428ev_loop_new (unsigned int flags) EV_NOEXCEPT
3077{ 3429{
3078 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3430 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
3079 3431
3080 memset (EV_A, 0, sizeof (struct ev_loop)); 3432 memset (EV_A, 0, sizeof (struct ev_loop));
3081 loop_init (EV_A_ flags); 3433 loop_init (EV_A_ flags);
… …
3088} 3440}
3089 3441
3090#endif /* multiplicity */ 3442#endif /* multiplicity */
3091 3443
3092#if EV_VERIFY 3444#if EV_VERIFY
3093static void noinline ecb_cold 3445ecb_noinline ecb_cold
3446static void
3094verify_watcher (EV_P_ W w) 3447verify_watcher (EV_P_ W w)
3095{ 3448{
3096 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));
3097 3450
3098 if (w->pending) 3451 if (w->pending)
3099 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));
3100} 3453}
3101 3454
3102static void noinline ecb_cold 3455ecb_noinline ecb_cold
3456static void
3103verify_heap (EV_P_ ANHE *heap, int N) 3457verify_heap (EV_P_ ANHE *heap, int N)
3104{ 3458{
3105 int i; 3459 int i;
3106 3460
3107 for (i = HEAP0; i < N + HEAP0; ++i) 3461 for (i = HEAP0; i < N + HEAP0; ++i)
… …
3112 3466
3113 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3467 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
3114 } 3468 }
3115} 3469}
3116 3470
3117static void noinline ecb_cold 3471ecb_noinline ecb_cold
3472static void
3118array_verify (EV_P_ W *ws, int cnt) 3473array_verify (EV_P_ W *ws, int cnt)
3119{ 3474{
3120 while (cnt--) 3475 while (cnt--)
3121 { 3476 {
3122 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3477 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
3125} 3480}
3126#endif 3481#endif
3127 3482
3128#if EV_FEATURE_API 3483#if EV_FEATURE_API
3129void ecb_cold 3484void ecb_cold
3130ev_verify (EV_P) EV_THROW 3485ev_verify (EV_P) EV_NOEXCEPT
3131{ 3486{
3132#if EV_VERIFY 3487#if EV_VERIFY
3133 int i; 3488 int i;
3134 WL w, w2; 3489 WL w, w2;
3135 3490
… …
3211#endif 3566#endif
3212} 3567}
3213#endif 3568#endif
3214 3569
3215#if EV_MULTIPLICITY 3570#if EV_MULTIPLICITY
3571ecb_cold
3216struct ev_loop * ecb_cold 3572struct ev_loop *
3217#else 3573#else
3218int 3574int
3219#endif 3575#endif
3220ev_default_loop (unsigned int flags) EV_THROW 3576ev_default_loop (unsigned int flags) EV_NOEXCEPT
3221{ 3577{
3222 if (!ev_default_loop_ptr) 3578 if (!ev_default_loop_ptr)
3223 { 3579 {
3224#if EV_MULTIPLICITY 3580#if EV_MULTIPLICITY
3225 EV_P = ev_default_loop_ptr = &default_loop_struct; 3581 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
3244 3600
3245 return ev_default_loop_ptr; 3601 return ev_default_loop_ptr;
3246} 3602}
3247 3603
3248void 3604void
3249ev_loop_fork (EV_P) EV_THROW 3605ev_loop_fork (EV_P) EV_NOEXCEPT
3250{ 3606{
3251 postfork = 1; 3607 postfork = 1;
3252} 3608}
3253 3609
3254/*****************************************************************************/ 3610/*****************************************************************************/
… …
3258{ 3614{
3259 EV_CB_INVOKE ((W)w, revents); 3615 EV_CB_INVOKE ((W)w, revents);
3260} 3616}
3261 3617
3262unsigned int 3618unsigned int
3263ev_pending_count (EV_P) EV_THROW 3619ev_pending_count (EV_P) EV_NOEXCEPT
3264{ 3620{
3265 int pri; 3621 int pri;
3266 unsigned int count = 0; 3622 unsigned int count = 0;
3267 3623
3268 for (pri = NUMPRI; pri--; ) 3624 for (pri = NUMPRI; pri--; )
3269 count += pendingcnt [pri]; 3625 count += pendingcnt [pri];
3270 3626
3271 return count; 3627 return count;
3272} 3628}
3273 3629
3274void noinline 3630ecb_noinline
3631void
3275ev_invoke_pending (EV_P) 3632ev_invoke_pending (EV_P)
3276{ 3633{
3277 pendingpri = NUMPRI; 3634 pendingpri = NUMPRI;
3278 3635
3279 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */ 3636 do
3280 { 3637 {
3281 --pendingpri; 3638 --pendingpri;
3282 3639
3640 /* pendingpri possibly gets modified in the inner loop */
3283 while (pendingcnt [pendingpri]) 3641 while (pendingcnt [pendingpri])
3284 { 3642 {
3285 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri]; 3643 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
3286 3644
3287 p->w->pending = 0; 3645 p->w->pending = 0;
3288 EV_CB_INVOKE (p->w, p->events); 3646 EV_CB_INVOKE (p->w, p->events);
3289 EV_FREQUENT_CHECK; 3647 EV_FREQUENT_CHECK;
3290 } 3648 }
3291 } 3649 }
3650 while (pendingpri);
3292} 3651}
3293 3652
3294#if EV_IDLE_ENABLE 3653#if EV_IDLE_ENABLE
3295/* make idle watchers pending. this handles the "call-idle */ 3654/* make idle watchers pending. this handles the "call-idle */
3296/* only when higher priorities are idle" logic */ 3655/* only when higher priorities are idle" logic */
3297inline_size void 3656inline_size void
3298idle_reify (EV_P) 3657idle_reify (EV_P)
3299{ 3658{
3300 if (expect_false (idleall)) 3659 if (ecb_expect_false (idleall))
3301 { 3660 {
3302 int pri; 3661 int pri;
3303 3662
3304 for (pri = NUMPRI; pri--; ) 3663 for (pri = NUMPRI; pri--; )
3305 { 3664 {
… …
3335 { 3694 {
3336 ev_at (w) += w->repeat; 3695 ev_at (w) += w->repeat;
3337 if (ev_at (w) < mn_now) 3696 if (ev_at (w) < mn_now)
3338 ev_at (w) = mn_now; 3697 ev_at (w) = mn_now;
3339 3698
3340 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.)));
3341 3700
3342 ANHE_at_cache (timers [HEAP0]); 3701 ANHE_at_cache (timers [HEAP0]);
3343 downheap (timers, timercnt, HEAP0); 3702 downheap (timers, timercnt, HEAP0);
3344 } 3703 }
3345 else 3704 else
… …
3354 } 3713 }
3355} 3714}
3356 3715
3357#if EV_PERIODIC_ENABLE 3716#if EV_PERIODIC_ENABLE
3358 3717
3359static void noinline 3718ecb_noinline
3719static void
3360periodic_recalc (EV_P_ ev_periodic *w) 3720periodic_recalc (EV_P_ ev_periodic *w)
3361{ 3721{
3362 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3722 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3363 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); 3723 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3364 3724
… …
3366 while (at <= ev_rt_now) 3726 while (at <= ev_rt_now)
3367 { 3727 {
3368 ev_tstamp nat = at + w->interval; 3728 ev_tstamp nat = at + w->interval;
3369 3729
3370 /* when resolution fails us, we use ev_rt_now */ 3730 /* when resolution fails us, we use ev_rt_now */
3371 if (expect_false (nat == at)) 3731 if (ecb_expect_false (nat == at))
3372 { 3732 {
3373 at = ev_rt_now; 3733 at = ev_rt_now;
3374 break; 3734 break;
3375 } 3735 }
3376 3736
… …
3422 } 3782 }
3423} 3783}
3424 3784
3425/* simply recalculate all periodics */ 3785/* simply recalculate all periodics */
3426/* 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? */
3427static void noinline ecb_cold 3787ecb_noinline ecb_cold
3788static void
3428periodics_reschedule (EV_P) 3789periodics_reschedule (EV_P)
3429{ 3790{
3430 int i; 3791 int i;
3431 3792
3432 /* adjust periodics after time jump */ 3793 /* adjust periodics after time jump */
… …
3445 reheap (periodics, periodiccnt); 3806 reheap (periodics, periodiccnt);
3446} 3807}
3447#endif 3808#endif
3448 3809
3449/* adjust all timers by a given offset */ 3810/* adjust all timers by a given offset */
3450static void noinline ecb_cold 3811ecb_noinline ecb_cold
3812static void
3451timers_reschedule (EV_P_ ev_tstamp adjust) 3813timers_reschedule (EV_P_ ev_tstamp adjust)
3452{ 3814{
3453 int i; 3815 int i;
3454 3816
3455 for (i = 0; i < timercnt; ++i) 3817 for (i = 0; i < timercnt; ++i)
… …
3464/* also detect if there was a timejump, and act accordingly */ 3826/* also detect if there was a timejump, and act accordingly */
3465inline_speed void 3827inline_speed void
3466time_update (EV_P_ ev_tstamp max_block) 3828time_update (EV_P_ ev_tstamp max_block)
3467{ 3829{
3468#if EV_USE_MONOTONIC 3830#if EV_USE_MONOTONIC
3469 if (expect_true (have_monotonic)) 3831 if (ecb_expect_true (have_monotonic))
3470 { 3832 {
3471 int i; 3833 int i;
3472 ev_tstamp odiff = rtmn_diff; 3834 ev_tstamp odiff = rtmn_diff;
3473 3835
3474 mn_now = get_clock (); 3836 mn_now = get_clock ();
3475 3837
3476 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3838 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
3477 /* interpolate in the meantime */ 3839 /* interpolate in the meantime */
3478 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)))
3479 { 3841 {
3480 ev_rt_now = rtmn_diff + mn_now; 3842 ev_rt_now = rtmn_diff + mn_now;
3481 return; 3843 return;
3482 } 3844 }
3483 3845
… …
3497 ev_tstamp diff; 3859 ev_tstamp diff;
3498 rtmn_diff = ev_rt_now - mn_now; 3860 rtmn_diff = ev_rt_now - mn_now;
3499 3861
3500 diff = odiff - rtmn_diff; 3862 diff = odiff - rtmn_diff;
3501 3863
3502 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)))
3503 return; /* all is well */ 3865 return; /* all is well */
3504 3866
3505 ev_rt_now = ev_time (); 3867 ev_rt_now = ev_time ();
3506 mn_now = get_clock (); 3868 mn_now = get_clock ();
3507 now_floor = mn_now; 3869 now_floor = mn_now;
… …
3516 else 3878 else
3517#endif 3879#endif
3518 { 3880 {
3519 ev_rt_now = ev_time (); 3881 ev_rt_now = ev_time ();
3520 3882
3521 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)))
3522 { 3884 {
3523 /* 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 */
3524 timers_reschedule (EV_A_ ev_rt_now - mn_now); 3886 timers_reschedule (EV_A_ ev_rt_now - mn_now);
3525#if EV_PERIODIC_ENABLE 3887#if EV_PERIODIC_ENABLE
3526 periodics_reschedule (EV_A); 3888 periodics_reschedule (EV_A);
… …
3549#if EV_VERIFY >= 2 3911#if EV_VERIFY >= 2
3550 ev_verify (EV_A); 3912 ev_verify (EV_A);
3551#endif 3913#endif
3552 3914
3553#ifndef _WIN32 3915#ifndef _WIN32
3554 if (expect_false (curpid)) /* penalise the forking check even more */ 3916 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
3555 if (expect_false (getpid () != curpid)) 3917 if (ecb_expect_false (getpid () != curpid))
3556 { 3918 {
3557 curpid = getpid (); 3919 curpid = getpid ();
3558 postfork = 1; 3920 postfork = 1;
3559 } 3921 }
3560#endif 3922#endif
3561 3923
3562#if EV_FORK_ENABLE 3924#if EV_FORK_ENABLE
3563 /* we might have forked, so queue fork handlers */ 3925 /* we might have forked, so queue fork handlers */
3564 if (expect_false (postfork)) 3926 if (ecb_expect_false (postfork))
3565 if (forkcnt) 3927 if (forkcnt)
3566 { 3928 {
3567 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3929 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
3568 EV_INVOKE_PENDING; 3930 EV_INVOKE_PENDING;
3569 } 3931 }
3570#endif 3932#endif
3571 3933
3572#if EV_PREPARE_ENABLE 3934#if EV_PREPARE_ENABLE
3573 /* queue prepare watchers (and execute them) */ 3935 /* queue prepare watchers (and execute them) */
3574 if (expect_false (preparecnt)) 3936 if (ecb_expect_false (preparecnt))
3575 { 3937 {
3576 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3938 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
3577 EV_INVOKE_PENDING; 3939 EV_INVOKE_PENDING;
3578 } 3940 }
3579#endif 3941#endif
3580 3942
3581 if (expect_false (loop_done)) 3943 if (ecb_expect_false (loop_done))
3582 break; 3944 break;
3583 3945
3584 /* we might have forked, so reify kernel state if necessary */ 3946 /* we might have forked, so reify kernel state if necessary */
3585 if (expect_false (postfork)) 3947 if (ecb_expect_false (postfork))
3586 loop_fork (EV_A); 3948 loop_fork (EV_A);
3587 3949
3588 /* update fd-related kernel structures */ 3950 /* update fd-related kernel structures */
3589 fd_reify (EV_A); 3951 fd_reify (EV_A);
3590 3952
… …
3595 3957
3596 /* remember old timestamp for io_blocktime calculation */ 3958 /* remember old timestamp for io_blocktime calculation */
3597 ev_tstamp prev_mn_now = mn_now; 3959 ev_tstamp prev_mn_now = mn_now;
3598 3960
3599 /* update time to cancel out callback processing overhead */ 3961 /* update time to cancel out callback processing overhead */
3600 time_update (EV_A_ 1e100); 3962 time_update (EV_A_ EV_TS_CONST (EV_TSTAMP_HUGE));
3601 3963
3602 /* from now on, we want a pipe-wake-up */ 3964 /* from now on, we want a pipe-wake-up */
3603 pipe_write_wanted = 1; 3965 pipe_write_wanted = 1;
3604 3966
3605 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 */
3606 3968
3607 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) 3969 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
3608 { 3970 {
3609 waittime = MAX_BLOCKTIME; 3971 waittime = EV_TS_CONST (MAX_BLOCKTIME);
3610 3972
3611 if (timercnt) 3973 if (timercnt)
3612 { 3974 {
3613 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now; 3975 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
3614 if (waittime > to) waittime = to; 3976 if (waittime > to) waittime = to;
… …
3621 if (waittime > to) waittime = to; 3983 if (waittime > to) waittime = to;
3622 } 3984 }
3623#endif 3985#endif
3624 3986
3625 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3987 /* don't let timeouts decrease the waittime below timeout_blocktime */
3626 if (expect_false (waittime < timeout_blocktime)) 3988 if (ecb_expect_false (waittime < timeout_blocktime))
3627 waittime = timeout_blocktime; 3989 waittime = timeout_blocktime;
3628 3990
3629 /* at this point, we NEED to wait, so we have to ensure */ 3991 /* now there are two more special cases left, either we have
3630 /* 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 */
3631 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.)
3632 waittime = backend_mintime; 3999 : backend_mintime;
3633 4000
3634 /* extra check because io_blocktime is commonly 0 */ 4001 /* extra check because io_blocktime is commonly 0 */
3635 if (expect_false (io_blocktime)) 4002 if (ecb_expect_false (io_blocktime))
3636 { 4003 {
3637 sleeptime = io_blocktime - (mn_now - prev_mn_now); 4004 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3638 4005
3639 if (sleeptime > waittime - backend_mintime) 4006 if (sleeptime > waittime - backend_mintime)
3640 sleeptime = waittime - backend_mintime; 4007 sleeptime = waittime - backend_mintime;
3641 4008
3642 if (expect_true (sleeptime > 0.)) 4009 if (ecb_expect_true (sleeptime > EV_TS_CONST (0.)))
3643 { 4010 {
3644 ev_sleep (sleeptime); 4011 ev_sleep (sleeptime);
3645 waittime -= sleeptime; 4012 waittime -= sleeptime;
3646 } 4013 }
3647 } 4014 }
… …
3661 { 4028 {
3662 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)));
3663 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 4030 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3664 } 4031 }
3665 4032
3666
3667 /* update ev_rt_now, do magic */ 4033 /* update ev_rt_now, do magic */
3668 time_update (EV_A_ waittime + sleeptime); 4034 time_update (EV_A_ waittime + sleeptime);
3669 } 4035 }
3670 4036
3671 /* queue pending timers and reschedule them */ 4037 /* queue pending timers and reschedule them */
… …
3679 idle_reify (EV_A); 4045 idle_reify (EV_A);
3680#endif 4046#endif
3681 4047
3682#if EV_CHECK_ENABLE 4048#if EV_CHECK_ENABLE
3683 /* queue check watchers, to be executed first */ 4049 /* queue check watchers, to be executed first */
3684 if (expect_false (checkcnt)) 4050 if (ecb_expect_false (checkcnt))
3685 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 4051 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3686#endif 4052#endif
3687 4053
3688 EV_INVOKE_PENDING; 4054 EV_INVOKE_PENDING;
3689 } 4055 }
3690 while (expect_true ( 4056 while (ecb_expect_true (
3691 activecnt 4057 activecnt
3692 && !loop_done 4058 && !loop_done
3693 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) 4059 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
3694 )); 4060 ));
3695 4061
… …
3702 4068
3703 return activecnt; 4069 return activecnt;
3704} 4070}
3705 4071
3706void 4072void
3707ev_break (EV_P_ int how) EV_THROW 4073ev_break (EV_P_ int how) EV_NOEXCEPT
3708{ 4074{
3709 loop_done = how; 4075 loop_done = how;
3710} 4076}
3711 4077
3712void 4078void
3713ev_ref (EV_P) EV_THROW 4079ev_ref (EV_P) EV_NOEXCEPT
3714{ 4080{
3715 ++activecnt; 4081 ++activecnt;
3716} 4082}
3717 4083
3718void 4084void
3719ev_unref (EV_P) EV_THROW 4085ev_unref (EV_P) EV_NOEXCEPT
3720{ 4086{
3721 --activecnt; 4087 --activecnt;
3722} 4088}
3723 4089
3724void 4090void
3725ev_now_update (EV_P) EV_THROW 4091ev_now_update (EV_P) EV_NOEXCEPT
3726{ 4092{
3727 time_update (EV_A_ 1e100); 4093 time_update (EV_A_ EV_TSTAMP_HUGE);
3728} 4094}
3729 4095
3730void 4096void
3731ev_suspend (EV_P) EV_THROW 4097ev_suspend (EV_P) EV_NOEXCEPT
3732{ 4098{
3733 ev_now_update (EV_A); 4099 ev_now_update (EV_A);
3734} 4100}
3735 4101
3736void 4102void
3737ev_resume (EV_P) EV_THROW 4103ev_resume (EV_P) EV_NOEXCEPT
3738{ 4104{
3739 ev_tstamp mn_prev = mn_now; 4105 ev_tstamp mn_prev = mn_now;
3740 4106
3741 ev_now_update (EV_A); 4107 ev_now_update (EV_A);
3742 timers_reschedule (EV_A_ mn_now - mn_prev); 4108 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
3759inline_size void 4125inline_size void
3760wlist_del (WL *head, WL elem) 4126wlist_del (WL *head, WL elem)
3761{ 4127{
3762 while (*head) 4128 while (*head)
3763 { 4129 {
3764 if (expect_true (*head == elem)) 4130 if (ecb_expect_true (*head == elem))
3765 { 4131 {
3766 *head = elem->next; 4132 *head = elem->next;
3767 break; 4133 break;
3768 } 4134 }
3769 4135
… …
3781 w->pending = 0; 4147 w->pending = 0;
3782 } 4148 }
3783} 4149}
3784 4150
3785int 4151int
3786ev_clear_pending (EV_P_ void *w) EV_THROW 4152ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
3787{ 4153{
3788 W w_ = (W)w; 4154 W w_ = (W)w;
3789 int pending = w_->pending; 4155 int pending = w_->pending;
3790 4156
3791 if (expect_true (pending)) 4157 if (ecb_expect_true (pending))
3792 { 4158 {
3793 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4159 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3794 p->w = (W)&pending_w; 4160 p->w = (W)&pending_w;
3795 w_->pending = 0; 4161 w_->pending = 0;
3796 return p->events; 4162 return p->events;
… …
3823 w->active = 0; 4189 w->active = 0;
3824} 4190}
3825 4191
3826/*****************************************************************************/ 4192/*****************************************************************************/
3827 4193
3828void noinline 4194ecb_noinline
4195void
3829ev_io_start (EV_P_ ev_io *w) EV_THROW 4196ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
3830{ 4197{
3831 int fd = w->fd; 4198 int fd = w->fd;
3832 4199
3833 if (expect_false (ev_is_active (w))) 4200 if (ecb_expect_false (ev_is_active (w)))
3834 return; 4201 return;
3835 4202
3836 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4203 assert (("libev: ev_io_start called with negative fd", fd >= 0));
3837 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 4204 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
3838 4205
4206#if EV_VERIFY >= 2
4207 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4208#endif
3839 EV_FREQUENT_CHECK; 4209 EV_FREQUENT_CHECK;
3840 4210
3841 ev_start (EV_A_ (W)w, 1); 4211 ev_start (EV_A_ (W)w, 1);
3842 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4212 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
3843 wlist_add (&anfds[fd].head, (WL)w); 4213 wlist_add (&anfds[fd].head, (WL)w);
3844 4214
3845 /* common bug, apparently */ 4215 /* common bug, apparently */
3846 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));
3847 4217
… …
3849 w->events &= ~EV__IOFDSET; 4219 w->events &= ~EV__IOFDSET;
3850 4220
3851 EV_FREQUENT_CHECK; 4221 EV_FREQUENT_CHECK;
3852} 4222}
3853 4223
3854void noinline 4224ecb_noinline
4225void
3855ev_io_stop (EV_P_ ev_io *w) EV_THROW 4226ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
3856{ 4227{
3857 clear_pending (EV_A_ (W)w); 4228 clear_pending (EV_A_ (W)w);
3858 if (expect_false (!ev_is_active (w))) 4229 if (ecb_expect_false (!ev_is_active (w)))
3859 return; 4230 return;
3860 4231
3861 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));
3862 4233
4234#if EV_VERIFY >= 2
4235 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4236#endif
3863 EV_FREQUENT_CHECK; 4237 EV_FREQUENT_CHECK;
3864 4238
3865 wlist_del (&anfds[w->fd].head, (WL)w); 4239 wlist_del (&anfds[w->fd].head, (WL)w);
3866 ev_stop (EV_A_ (W)w); 4240 ev_stop (EV_A_ (W)w);
3867 4241
3868 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 4242 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3869 4243
3870 EV_FREQUENT_CHECK; 4244 EV_FREQUENT_CHECK;
3871} 4245}
3872 4246
3873void noinline 4247ecb_noinline
4248void
3874ev_timer_start (EV_P_ ev_timer *w) EV_THROW 4249ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
3875{ 4250{
3876 if (expect_false (ev_is_active (w))) 4251 if (ecb_expect_false (ev_is_active (w)))
3877 return; 4252 return;
3878 4253
3879 ev_at (w) += mn_now; 4254 ev_at (w) += mn_now;
3880 4255
3881 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.));
3882 4257
3883 EV_FREQUENT_CHECK; 4258 EV_FREQUENT_CHECK;
3884 4259
3885 ++timercnt; 4260 ++timercnt;
3886 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4261 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
3887 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4262 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
3888 ANHE_w (timers [ev_active (w)]) = (WT)w; 4263 ANHE_w (timers [ev_active (w)]) = (WT)w;
3889 ANHE_at_cache (timers [ev_active (w)]); 4264 ANHE_at_cache (timers [ev_active (w)]);
3890 upheap (timers, ev_active (w)); 4265 upheap (timers, ev_active (w));
3891 4266
3892 EV_FREQUENT_CHECK; 4267 EV_FREQUENT_CHECK;
3893 4268
3894 /*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));*/
3895} 4270}
3896 4271
3897void noinline 4272ecb_noinline
4273void
3898ev_timer_stop (EV_P_ ev_timer *w) EV_THROW 4274ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
3899{ 4275{
3900 clear_pending (EV_A_ (W)w); 4276 clear_pending (EV_A_ (W)w);
3901 if (expect_false (!ev_is_active (w))) 4277 if (ecb_expect_false (!ev_is_active (w)))
3902 return; 4278 return;
3903 4279
3904 EV_FREQUENT_CHECK; 4280 EV_FREQUENT_CHECK;
3905 4281
3906 { 4282 {
… …
3908 4284
3909 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));
3910 4286
3911 --timercnt; 4287 --timercnt;
3912 4288
3913 if (expect_true (active < timercnt + HEAP0)) 4289 if (ecb_expect_true (active < timercnt + HEAP0))
3914 { 4290 {
3915 timers [active] = timers [timercnt + HEAP0]; 4291 timers [active] = timers [timercnt + HEAP0];
3916 adjustheap (timers, timercnt, active); 4292 adjustheap (timers, timercnt, active);
3917 } 4293 }
3918 } 4294 }
… …
3922 ev_stop (EV_A_ (W)w); 4298 ev_stop (EV_A_ (W)w);
3923 4299
3924 EV_FREQUENT_CHECK; 4300 EV_FREQUENT_CHECK;
3925} 4301}
3926 4302
3927void noinline 4303ecb_noinline
4304void
3928ev_timer_again (EV_P_ ev_timer *w) EV_THROW 4305ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
3929{ 4306{
3930 EV_FREQUENT_CHECK; 4307 EV_FREQUENT_CHECK;
3931 4308
3932 clear_pending (EV_A_ (W)w); 4309 clear_pending (EV_A_ (W)w);
3933 4310
… …
3950 4327
3951 EV_FREQUENT_CHECK; 4328 EV_FREQUENT_CHECK;
3952} 4329}
3953 4330
3954ev_tstamp 4331ev_tstamp
3955ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW 4332ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
3956{ 4333{
3957 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.));
3958} 4335}
3959 4336
3960#if EV_PERIODIC_ENABLE 4337#if EV_PERIODIC_ENABLE
3961void noinline 4338ecb_noinline
4339void
3962ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW 4340ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
3963{ 4341{
3964 if (expect_false (ev_is_active (w))) 4342 if (ecb_expect_false (ev_is_active (w)))
3965 return; 4343 return;
4344
4345#if EV_USE_TIMERFD
4346 if (timerfd == -2)
4347 evtimerfd_init (EV_A);
4348#endif
3966 4349
3967 if (w->reschedule_cb) 4350 if (w->reschedule_cb)
3968 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4351 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
3969 else if (w->interval) 4352 else if (w->interval)
3970 { 4353 {
… …
3976 4359
3977 EV_FREQUENT_CHECK; 4360 EV_FREQUENT_CHECK;
3978 4361
3979 ++periodiccnt; 4362 ++periodiccnt;
3980 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4363 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
3981 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4364 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
3982 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4365 ANHE_w (periodics [ev_active (w)]) = (WT)w;
3983 ANHE_at_cache (periodics [ev_active (w)]); 4366 ANHE_at_cache (periodics [ev_active (w)]);
3984 upheap (periodics, ev_active (w)); 4367 upheap (periodics, ev_active (w));
3985 4368
3986 EV_FREQUENT_CHECK; 4369 EV_FREQUENT_CHECK;
3987 4370
3988 /*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));*/
3989} 4372}
3990 4373
3991void noinline 4374ecb_noinline
4375void
3992ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW 4376ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
3993{ 4377{
3994 clear_pending (EV_A_ (W)w); 4378 clear_pending (EV_A_ (W)w);
3995 if (expect_false (!ev_is_active (w))) 4379 if (ecb_expect_false (!ev_is_active (w)))
3996 return; 4380 return;
3997 4381
3998 EV_FREQUENT_CHECK; 4382 EV_FREQUENT_CHECK;
3999 4383
4000 { 4384 {
… …
4002 4386
4003 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));
4004 4388
4005 --periodiccnt; 4389 --periodiccnt;
4006 4390
4007 if (expect_true (active < periodiccnt + HEAP0)) 4391 if (ecb_expect_true (active < periodiccnt + HEAP0))
4008 { 4392 {
4009 periodics [active] = periodics [periodiccnt + HEAP0]; 4393 periodics [active] = periodics [periodiccnt + HEAP0];
4010 adjustheap (periodics, periodiccnt, active); 4394 adjustheap (periodics, periodiccnt, active);
4011 } 4395 }
4012 } 4396 }
… …
4014 ev_stop (EV_A_ (W)w); 4398 ev_stop (EV_A_ (W)w);
4015 4399
4016 EV_FREQUENT_CHECK; 4400 EV_FREQUENT_CHECK;
4017} 4401}
4018 4402
4019void noinline 4403ecb_noinline
4404void
4020ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW 4405ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
4021{ 4406{
4022 /* TODO: use adjustheap and recalculation */ 4407 /* TODO: use adjustheap and recalculation */
4023 ev_periodic_stop (EV_A_ w); 4408 ev_periodic_stop (EV_A_ w);
4024 ev_periodic_start (EV_A_ w); 4409 ev_periodic_start (EV_A_ w);
4025} 4410}
… …
4029# define SA_RESTART 0 4414# define SA_RESTART 0
4030#endif 4415#endif
4031 4416
4032#if EV_SIGNAL_ENABLE 4417#if EV_SIGNAL_ENABLE
4033 4418
4034void noinline 4419ecb_noinline
4420void
4035ev_signal_start (EV_P_ ev_signal *w) EV_THROW 4421ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
4036{ 4422{
4037 if (expect_false (ev_is_active (w))) 4423 if (ecb_expect_false (ev_is_active (w)))
4038 return; 4424 return;
4039 4425
4040 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));
4041 4427
4042#if EV_MULTIPLICITY 4428#if EV_MULTIPLICITY
… …
4111 } 4497 }
4112 4498
4113 EV_FREQUENT_CHECK; 4499 EV_FREQUENT_CHECK;
4114} 4500}
4115 4501
4116void noinline 4502ecb_noinline
4503void
4117ev_signal_stop (EV_P_ ev_signal *w) EV_THROW 4504ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
4118{ 4505{
4119 clear_pending (EV_A_ (W)w); 4506 clear_pending (EV_A_ (W)w);
4120 if (expect_false (!ev_is_active (w))) 4507 if (ecb_expect_false (!ev_is_active (w)))
4121 return; 4508 return;
4122 4509
4123 EV_FREQUENT_CHECK; 4510 EV_FREQUENT_CHECK;
4124 4511
4125 wlist_del (&signals [w->signum - 1].head, (WL)w); 4512 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
4153#endif 4540#endif
4154 4541
4155#if EV_CHILD_ENABLE 4542#if EV_CHILD_ENABLE
4156 4543
4157void 4544void
4158ev_child_start (EV_P_ ev_child *w) EV_THROW 4545ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
4159{ 4546{
4160#if EV_MULTIPLICITY 4547#if EV_MULTIPLICITY
4161 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));
4162#endif 4549#endif
4163 if (expect_false (ev_is_active (w))) 4550 if (ecb_expect_false (ev_is_active (w)))
4164 return; 4551 return;
4165 4552
4166 EV_FREQUENT_CHECK; 4553 EV_FREQUENT_CHECK;
4167 4554
4168 ev_start (EV_A_ (W)w, 1); 4555 ev_start (EV_A_ (W)w, 1);
… …
4170 4557
4171 EV_FREQUENT_CHECK; 4558 EV_FREQUENT_CHECK;
4172} 4559}
4173 4560
4174void 4561void
4175ev_child_stop (EV_P_ ev_child *w) EV_THROW 4562ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
4176{ 4563{
4177 clear_pending (EV_A_ (W)w); 4564 clear_pending (EV_A_ (W)w);
4178 if (expect_false (!ev_is_active (w))) 4565 if (ecb_expect_false (!ev_is_active (w)))
4179 return; 4566 return;
4180 4567
4181 EV_FREQUENT_CHECK; 4568 EV_FREQUENT_CHECK;
4182 4569
4183 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); 4570 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
… …
4197 4584
4198#define DEF_STAT_INTERVAL 5.0074891 4585#define DEF_STAT_INTERVAL 5.0074891
4199#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4586#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
4200#define MIN_STAT_INTERVAL 0.1074891 4587#define MIN_STAT_INTERVAL 0.1074891
4201 4588
4202static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4589ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
4203 4590
4204#if EV_USE_INOTIFY 4591#if EV_USE_INOTIFY
4205 4592
4206/* 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 */
4207# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4594# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
4208 4595
4209static void noinline 4596ecb_noinline
4597static void
4210infy_add (EV_P_ ev_stat *w) 4598infy_add (EV_P_ ev_stat *w)
4211{ 4599{
4212 w->wd = inotify_add_watch (fs_fd, w->path, 4600 w->wd = inotify_add_watch (fs_fd, w->path,
4213 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY 4601 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4214 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO 4602 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
… …
4278 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4666 if (ev_is_active (&w->timer)) ev_ref (EV_A);
4279 ev_timer_again (EV_A_ &w->timer); 4667 ev_timer_again (EV_A_ &w->timer);
4280 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4668 if (ev_is_active (&w->timer)) ev_unref (EV_A);
4281} 4669}
4282 4670
4283static void noinline 4671ecb_noinline
4672static void
4284infy_del (EV_P_ ev_stat *w) 4673infy_del (EV_P_ ev_stat *w)
4285{ 4674{
4286 int slot; 4675 int slot;
4287 int wd = w->wd; 4676 int wd = w->wd;
4288 4677
… …
4295 4684
4296 /* remove this watcher, if others are watching it, they will rearm */ 4685 /* remove this watcher, if others are watching it, they will rearm */
4297 inotify_rm_watch (fs_fd, wd); 4686 inotify_rm_watch (fs_fd, wd);
4298} 4687}
4299 4688
4300static void noinline 4689ecb_noinline
4690static void
4301infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4691infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
4302{ 4692{
4303 if (slot < 0) 4693 if (slot < 0)
4304 /* overflow, need to check for all hash slots */ 4694 /* overflow, need to check for all hash slots */
4305 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4695 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
4341 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4731 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4342 ofs += sizeof (struct inotify_event) + ev->len; 4732 ofs += sizeof (struct inotify_event) + ev->len;
4343 } 4733 }
4344} 4734}
4345 4735
4346inline_size void ecb_cold 4736inline_size ecb_cold
4737void
4347ev_check_2625 (EV_P) 4738ev_check_2625 (EV_P)
4348{ 4739{
4349 /* kernels < 2.6.25 are borked 4740 /* kernels < 2.6.25 are borked
4350 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4741 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
4351 */ 4742 */
… …
4441#else 4832#else
4442# define EV_LSTAT(p,b) lstat (p, b) 4833# define EV_LSTAT(p,b) lstat (p, b)
4443#endif 4834#endif
4444 4835
4445void 4836void
4446ev_stat_stat (EV_P_ ev_stat *w) EV_THROW 4837ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
4447{ 4838{
4448 if (lstat (w->path, &w->attr) < 0) 4839 if (lstat (w->path, &w->attr) < 0)
4449 w->attr.st_nlink = 0; 4840 w->attr.st_nlink = 0;
4450 else if (!w->attr.st_nlink) 4841 else if (!w->attr.st_nlink)
4451 w->attr.st_nlink = 1; 4842 w->attr.st_nlink = 1;
4452} 4843}
4453 4844
4454static void noinline 4845ecb_noinline
4846static void
4455stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4847stat_timer_cb (EV_P_ ev_timer *w_, int revents)
4456{ 4848{
4457 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4849 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
4458 4850
4459 ev_statdata prev = w->attr; 4851 ev_statdata prev = w->attr;
… …
4490 ev_feed_event (EV_A_ w, EV_STAT); 4882 ev_feed_event (EV_A_ w, EV_STAT);
4491 } 4883 }
4492} 4884}
4493 4885
4494void 4886void
4495ev_stat_start (EV_P_ ev_stat *w) EV_THROW 4887ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
4496{ 4888{
4497 if (expect_false (ev_is_active (w))) 4889 if (ecb_expect_false (ev_is_active (w)))
4498 return; 4890 return;
4499 4891
4500 ev_stat_stat (EV_A_ w); 4892 ev_stat_stat (EV_A_ w);
4501 4893
4502 if (w->interval < MIN_STAT_INTERVAL && w->interval) 4894 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
4521 4913
4522 EV_FREQUENT_CHECK; 4914 EV_FREQUENT_CHECK;
4523} 4915}
4524 4916
4525void 4917void
4526ev_stat_stop (EV_P_ ev_stat *w) EV_THROW 4918ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
4527{ 4919{
4528 clear_pending (EV_A_ (W)w); 4920 clear_pending (EV_A_ (W)w);
4529 if (expect_false (!ev_is_active (w))) 4921 if (ecb_expect_false (!ev_is_active (w)))
4530 return; 4922 return;
4531 4923
4532 EV_FREQUENT_CHECK; 4924 EV_FREQUENT_CHECK;
4533 4925
4534#if EV_USE_INOTIFY 4926#if EV_USE_INOTIFY
… …
4547} 4939}
4548#endif 4940#endif
4549 4941
4550#if EV_IDLE_ENABLE 4942#if EV_IDLE_ENABLE
4551void 4943void
4552ev_idle_start (EV_P_ ev_idle *w) EV_THROW 4944ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
4553{ 4945{
4554 if (expect_false (ev_is_active (w))) 4946 if (ecb_expect_false (ev_is_active (w)))
4555 return; 4947 return;
4556 4948
4557 pri_adjust (EV_A_ (W)w); 4949 pri_adjust (EV_A_ (W)w);
4558 4950
4559 EV_FREQUENT_CHECK; 4951 EV_FREQUENT_CHECK;
… …
4562 int active = ++idlecnt [ABSPRI (w)]; 4954 int active = ++idlecnt [ABSPRI (w)];
4563 4955
4564 ++idleall; 4956 ++idleall;
4565 ev_start (EV_A_ (W)w, active); 4957 ev_start (EV_A_ (W)w, active);
4566 4958
4567 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);
4568 idles [ABSPRI (w)][active - 1] = w; 4960 idles [ABSPRI (w)][active - 1] = w;
4569 } 4961 }
4570 4962
4571 EV_FREQUENT_CHECK; 4963 EV_FREQUENT_CHECK;
4572} 4964}
4573 4965
4574void 4966void
4575ev_idle_stop (EV_P_ ev_idle *w) EV_THROW 4967ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
4576{ 4968{
4577 clear_pending (EV_A_ (W)w); 4969 clear_pending (EV_A_ (W)w);
4578 if (expect_false (!ev_is_active (w))) 4970 if (ecb_expect_false (!ev_is_active (w)))
4579 return; 4971 return;
4580 4972
4581 EV_FREQUENT_CHECK; 4973 EV_FREQUENT_CHECK;
4582 4974
4583 { 4975 {
… …
4594} 4986}
4595#endif 4987#endif
4596 4988
4597#if EV_PREPARE_ENABLE 4989#if EV_PREPARE_ENABLE
4598void 4990void
4599ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW 4991ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
4600{ 4992{
4601 if (expect_false (ev_is_active (w))) 4993 if (ecb_expect_false (ev_is_active (w)))
4602 return; 4994 return;
4603 4995
4604 EV_FREQUENT_CHECK; 4996 EV_FREQUENT_CHECK;
4605 4997
4606 ev_start (EV_A_ (W)w, ++preparecnt); 4998 ev_start (EV_A_ (W)w, ++preparecnt);
4607 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4999 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
4608 prepares [preparecnt - 1] = w; 5000 prepares [preparecnt - 1] = w;
4609 5001
4610 EV_FREQUENT_CHECK; 5002 EV_FREQUENT_CHECK;
4611} 5003}
4612 5004
4613void 5005void
4614ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW 5006ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
4615{ 5007{
4616 clear_pending (EV_A_ (W)w); 5008 clear_pending (EV_A_ (W)w);
4617 if (expect_false (!ev_is_active (w))) 5009 if (ecb_expect_false (!ev_is_active (w)))
4618 return; 5010 return;
4619 5011
4620 EV_FREQUENT_CHECK; 5012 EV_FREQUENT_CHECK;
4621 5013
4622 { 5014 {
… …
4632} 5024}
4633#endif 5025#endif
4634 5026
4635#if EV_CHECK_ENABLE 5027#if EV_CHECK_ENABLE
4636void 5028void
4637ev_check_start (EV_P_ ev_check *w) EV_THROW 5029ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
4638{ 5030{
4639 if (expect_false (ev_is_active (w))) 5031 if (ecb_expect_false (ev_is_active (w)))
4640 return; 5032 return;
4641 5033
4642 EV_FREQUENT_CHECK; 5034 EV_FREQUENT_CHECK;
4643 5035
4644 ev_start (EV_A_ (W)w, ++checkcnt); 5036 ev_start (EV_A_ (W)w, ++checkcnt);
4645 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 5037 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
4646 checks [checkcnt - 1] = w; 5038 checks [checkcnt - 1] = w;
4647 5039
4648 EV_FREQUENT_CHECK; 5040 EV_FREQUENT_CHECK;
4649} 5041}
4650 5042
4651void 5043void
4652ev_check_stop (EV_P_ ev_check *w) EV_THROW 5044ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
4653{ 5045{
4654 clear_pending (EV_A_ (W)w); 5046 clear_pending (EV_A_ (W)w);
4655 if (expect_false (!ev_is_active (w))) 5047 if (ecb_expect_false (!ev_is_active (w)))
4656 return; 5048 return;
4657 5049
4658 EV_FREQUENT_CHECK; 5050 EV_FREQUENT_CHECK;
4659 5051
4660 { 5052 {
… …
4669 EV_FREQUENT_CHECK; 5061 EV_FREQUENT_CHECK;
4670} 5062}
4671#endif 5063#endif
4672 5064
4673#if EV_EMBED_ENABLE 5065#if EV_EMBED_ENABLE
4674void noinline 5066ecb_noinline
5067void
4675ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW 5068ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
4676{ 5069{
4677 ev_run (w->other, EVRUN_NOWAIT); 5070 ev_run (w->other, EVRUN_NOWAIT);
4678} 5071}
4679 5072
4680static void 5073static void
… …
4702 ev_run (EV_A_ EVRUN_NOWAIT); 5095 ev_run (EV_A_ EVRUN_NOWAIT);
4703 } 5096 }
4704 } 5097 }
4705} 5098}
4706 5099
5100#if EV_FORK_ENABLE
4707static void 5101static void
4708embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 5102embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
4709{ 5103{
4710 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));
4711 5105
… …
4718 ev_run (EV_A_ EVRUN_NOWAIT); 5112 ev_run (EV_A_ EVRUN_NOWAIT);
4719 } 5113 }
4720 5114
4721 ev_embed_start (EV_A_ w); 5115 ev_embed_start (EV_A_ w);
4722} 5116}
5117#endif
4723 5118
4724#if 0 5119#if 0
4725static void 5120static void
4726embed_idle_cb (EV_P_ ev_idle *idle, int revents) 5121embed_idle_cb (EV_P_ ev_idle *idle, int revents)
4727{ 5122{
4728 ev_idle_stop (EV_A_ idle); 5123 ev_idle_stop (EV_A_ idle);
4729} 5124}
4730#endif 5125#endif
4731 5126
4732void 5127void
4733ev_embed_start (EV_P_ ev_embed *w) EV_THROW 5128ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
4734{ 5129{
4735 if (expect_false (ev_is_active (w))) 5130 if (ecb_expect_false (ev_is_active (w)))
4736 return; 5131 return;
4737 5132
4738 { 5133 {
4739 EV_P = w->other; 5134 EV_P = w->other;
4740 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 ()));
… …
4748 5143
4749 ev_prepare_init (&w->prepare, embed_prepare_cb); 5144 ev_prepare_init (&w->prepare, embed_prepare_cb);
4750 ev_set_priority (&w->prepare, EV_MINPRI); 5145 ev_set_priority (&w->prepare, EV_MINPRI);
4751 ev_prepare_start (EV_A_ &w->prepare); 5146 ev_prepare_start (EV_A_ &w->prepare);
4752 5147
5148#if EV_FORK_ENABLE
4753 ev_fork_init (&w->fork, embed_fork_cb); 5149 ev_fork_init (&w->fork, embed_fork_cb);
4754 ev_fork_start (EV_A_ &w->fork); 5150 ev_fork_start (EV_A_ &w->fork);
5151#endif
4755 5152
4756 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 5153 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
4757 5154
4758 ev_start (EV_A_ (W)w, 1); 5155 ev_start (EV_A_ (W)w, 1);
4759 5156
4760 EV_FREQUENT_CHECK; 5157 EV_FREQUENT_CHECK;
4761} 5158}
4762 5159
4763void 5160void
4764ev_embed_stop (EV_P_ ev_embed *w) EV_THROW 5161ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
4765{ 5162{
4766 clear_pending (EV_A_ (W)w); 5163 clear_pending (EV_A_ (W)w);
4767 if (expect_false (!ev_is_active (w))) 5164 if (ecb_expect_false (!ev_is_active (w)))
4768 return; 5165 return;
4769 5166
4770 EV_FREQUENT_CHECK; 5167 EV_FREQUENT_CHECK;
4771 5168
4772 ev_io_stop (EV_A_ &w->io); 5169 ev_io_stop (EV_A_ &w->io);
4773 ev_prepare_stop (EV_A_ &w->prepare); 5170 ev_prepare_stop (EV_A_ &w->prepare);
5171#if EV_FORK_ENABLE
4774 ev_fork_stop (EV_A_ &w->fork); 5172 ev_fork_stop (EV_A_ &w->fork);
5173#endif
4775 5174
4776 ev_stop (EV_A_ (W)w); 5175 ev_stop (EV_A_ (W)w);
4777 5176
4778 EV_FREQUENT_CHECK; 5177 EV_FREQUENT_CHECK;
4779} 5178}
4780#endif 5179#endif
4781 5180
4782#if EV_FORK_ENABLE 5181#if EV_FORK_ENABLE
4783void 5182void
4784ev_fork_start (EV_P_ ev_fork *w) EV_THROW 5183ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
4785{ 5184{
4786 if (expect_false (ev_is_active (w))) 5185 if (ecb_expect_false (ev_is_active (w)))
4787 return; 5186 return;
4788 5187
4789 EV_FREQUENT_CHECK; 5188 EV_FREQUENT_CHECK;
4790 5189
4791 ev_start (EV_A_ (W)w, ++forkcnt); 5190 ev_start (EV_A_ (W)w, ++forkcnt);
4792 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5191 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
4793 forks [forkcnt - 1] = w; 5192 forks [forkcnt - 1] = w;
4794 5193
4795 EV_FREQUENT_CHECK; 5194 EV_FREQUENT_CHECK;
4796} 5195}
4797 5196
4798void 5197void
4799ev_fork_stop (EV_P_ ev_fork *w) EV_THROW 5198ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
4800{ 5199{
4801 clear_pending (EV_A_ (W)w); 5200 clear_pending (EV_A_ (W)w);
4802 if (expect_false (!ev_is_active (w))) 5201 if (ecb_expect_false (!ev_is_active (w)))
4803 return; 5202 return;
4804 5203
4805 EV_FREQUENT_CHECK; 5204 EV_FREQUENT_CHECK;
4806 5205
4807 { 5206 {
… …
4817} 5216}
4818#endif 5217#endif
4819 5218
4820#if EV_CLEANUP_ENABLE 5219#if EV_CLEANUP_ENABLE
4821void 5220void
4822ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW 5221ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4823{ 5222{
4824 if (expect_false (ev_is_active (w))) 5223 if (ecb_expect_false (ev_is_active (w)))
4825 return; 5224 return;
4826 5225
4827 EV_FREQUENT_CHECK; 5226 EV_FREQUENT_CHECK;
4828 5227
4829 ev_start (EV_A_ (W)w, ++cleanupcnt); 5228 ev_start (EV_A_ (W)w, ++cleanupcnt);
4830 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 5229 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
4831 cleanups [cleanupcnt - 1] = w; 5230 cleanups [cleanupcnt - 1] = w;
4832 5231
4833 /* cleanup watchers should never keep a refcount on the loop */ 5232 /* cleanup watchers should never keep a refcount on the loop */
4834 ev_unref (EV_A); 5233 ev_unref (EV_A);
4835 EV_FREQUENT_CHECK; 5234 EV_FREQUENT_CHECK;
4836} 5235}
4837 5236
4838void 5237void
4839ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW 5238ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4840{ 5239{
4841 clear_pending (EV_A_ (W)w); 5240 clear_pending (EV_A_ (W)w);
4842 if (expect_false (!ev_is_active (w))) 5241 if (ecb_expect_false (!ev_is_active (w)))
4843 return; 5242 return;
4844 5243
4845 EV_FREQUENT_CHECK; 5244 EV_FREQUENT_CHECK;
4846 ev_ref (EV_A); 5245 ev_ref (EV_A);
4847 5246
… …
4858} 5257}
4859#endif 5258#endif
4860 5259
4861#if EV_ASYNC_ENABLE 5260#if EV_ASYNC_ENABLE
4862void 5261void
4863ev_async_start (EV_P_ ev_async *w) EV_THROW 5262ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4864{ 5263{
4865 if (expect_false (ev_is_active (w))) 5264 if (ecb_expect_false (ev_is_active (w)))
4866 return; 5265 return;
4867 5266
4868 w->sent = 0; 5267 w->sent = 0;
4869 5268
4870 evpipe_init (EV_A); 5269 evpipe_init (EV_A);
4871 5270
4872 EV_FREQUENT_CHECK; 5271 EV_FREQUENT_CHECK;
4873 5272
4874 ev_start (EV_A_ (W)w, ++asynccnt); 5273 ev_start (EV_A_ (W)w, ++asynccnt);
4875 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5274 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
4876 asyncs [asynccnt - 1] = w; 5275 asyncs [asynccnt - 1] = w;
4877 5276
4878 EV_FREQUENT_CHECK; 5277 EV_FREQUENT_CHECK;
4879} 5278}
4880 5279
4881void 5280void
4882ev_async_stop (EV_P_ ev_async *w) EV_THROW 5281ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4883{ 5282{
4884 clear_pending (EV_A_ (W)w); 5283 clear_pending (EV_A_ (W)w);
4885 if (expect_false (!ev_is_active (w))) 5284 if (ecb_expect_false (!ev_is_active (w)))
4886 return; 5285 return;
4887 5286
4888 EV_FREQUENT_CHECK; 5287 EV_FREQUENT_CHECK;
4889 5288
4890 { 5289 {
… …
4898 5297
4899 EV_FREQUENT_CHECK; 5298 EV_FREQUENT_CHECK;
4900} 5299}
4901 5300
4902void 5301void
4903ev_async_send (EV_P_ ev_async *w) EV_THROW 5302ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
4904{ 5303{
4905 w->sent = 1; 5304 w->sent = 1;
4906 evpipe_write (EV_A_ &async_pending); 5305 evpipe_write (EV_A_ &async_pending);
4907} 5306}
4908#endif 5307#endif
… …
4945 5344
4946 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5345 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
4947} 5346}
4948 5347
4949void 5348void
4950ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW 5349ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
4951{ 5350{
4952 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));
4953
4954 if (expect_false (!once))
4955 {
4956 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
4957 return;
4958 }
4959 5352
4960 once->cb = cb; 5353 once->cb = cb;
4961 once->arg = arg; 5354 once->arg = arg;
4962 5355
4963 ev_init (&once->io, once_cb_io); 5356 ev_init (&once->io, once_cb_io);
… …
4976} 5369}
4977 5370
4978/*****************************************************************************/ 5371/*****************************************************************************/
4979 5372
4980#if EV_WALK_ENABLE 5373#if EV_WALK_ENABLE
4981void ecb_cold 5374ecb_cold
5375void
4982ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW 5376ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
4983{ 5377{
4984 int i, j; 5378 int i, j;
4985 ev_watcher_list *wl, *wn; 5379 ev_watcher_list *wl, *wn;
4986 5380
4987 if (types & (EV_IO | EV_EMBED)) 5381 if (types & (EV_IO | EV_EMBED))

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