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Comparing libev/ev.c (file contents):
Revision 1.493 by root, Sun Jun 23 02:02:24 2019 UTC vs.
Revision 1.524 by root, Wed Jan 22 02:20:47 2020 UTC

… …
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 120# if HAVE_LINUX_AIO_ABI_H
121# ifndef EV_USE_LINUXAIO 121# ifndef EV_USE_LINUXAIO
122# define EV_USE_LINUXAIO EV_FEATURE_BACKENDS 122# define EV_USE_LINUXAIO 0 /* was: EV_FEATURE_BACKENDS, always off by default */
123# endif 123# endif
124# else 124# else
125# undef EV_USE_LINUXAIO 125# undef EV_USE_LINUXAIO
126# define EV_USE_LINUXAIO 0 126# define EV_USE_LINUXAIO 0
127# endif 127# endif
128 128
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
129# if HAVE_KQUEUE && HAVE_SYS_EVENT_H 138# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
130# ifndef EV_USE_KQUEUE 139# ifndef EV_USE_KQUEUE
131# define EV_USE_KQUEUE EV_FEATURE_BACKENDS 140# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
132# endif 141# endif
133# else 142# else
… …
168# endif 177# endif
169# else 178# else
170# undef EV_USE_EVENTFD 179# undef EV_USE_EVENTFD
171# define EV_USE_EVENTFD 0 180# define EV_USE_EVENTFD 0
172# endif 181# endif
173 182
183# if HAVE_SYS_TIMERFD_H
184# ifndef EV_USE_TIMERFD
185# define EV_USE_TIMERFD EV_FEATURE_OS
186# endif
187# else
188# undef EV_USE_TIMERFD
189# define EV_USE_TIMERFD 0
190# endif
191
174#endif 192#endif
175 193
176/* OS X, in its infinite idiocy, actually HARDCODES 194/* OS X, in its infinite idiocy, actually HARDCODES
177 * a limit of 1024 into their select. Where people have brains, 195 * a limit of 1024 into their select. Where people have brains,
178 * OS X engineers apparently have a vacuum. Or maybe they were 196 * OS X engineers apparently have a vacuum. Or maybe they were
… …
326# define EV_USE_PORT 0 344# define EV_USE_PORT 0
327#endif 345#endif
328 346
329#ifndef EV_USE_LINUXAIO 347#ifndef EV_USE_LINUXAIO
330# if __linux /* libev currently assumes linux/aio_abi.h is always available on linux */ 348# if __linux /* libev currently assumes linux/aio_abi.h is always available on linux */
331# define EV_USE_LINUXAIO 1 349# define EV_USE_LINUXAIO 0 /* was: 1, always off by default */
332# else 350# else
333# define EV_USE_LINUXAIO 0 351# 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
334# endif 360# endif
335#endif 361#endif
336 362
337#ifndef EV_USE_INOTIFY 363#ifndef EV_USE_INOTIFY
338# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 364# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
… …
361#ifndef EV_USE_SIGNALFD 387#ifndef EV_USE_SIGNALFD
362# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 388# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
363# define EV_USE_SIGNALFD EV_FEATURE_OS 389# define EV_USE_SIGNALFD EV_FEATURE_OS
364# else 390# else
365# define EV_USE_SIGNALFD 0 391# define EV_USE_SIGNALFD 0
392# endif
393#endif
394
395#ifndef EV_USE_TIMERFD
396# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 8))
397# define EV_USE_TIMERFD EV_FEATURE_OS
398# else
399# define EV_USE_TIMERFD 0
366# endif 400# endif
367#endif 401#endif
368 402
369#if 0 /* debugging */ 403#if 0 /* debugging */
370# define EV_VERIFY 3 404# define EV_VERIFY 3
… …
406# include <sys/syscall.h> 440# include <sys/syscall.h>
407# ifdef SYS_clock_gettime 441# ifdef SYS_clock_gettime
408# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 442# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
409# undef EV_USE_MONOTONIC 443# undef EV_USE_MONOTONIC
410# define EV_USE_MONOTONIC 1 444# define EV_USE_MONOTONIC 1
445# define EV_NEED_SYSCALL 1
411# else 446# else
412# undef EV_USE_CLOCK_SYSCALL 447# undef EV_USE_CLOCK_SYSCALL
413# define EV_USE_CLOCK_SYSCALL 0 448# define EV_USE_CLOCK_SYSCALL 0
414# endif 449# endif
415#endif 450#endif
… …
427#endif 462#endif
428 463
429#if !EV_STAT_ENABLE 464#if !EV_STAT_ENABLE
430# undef EV_USE_INOTIFY 465# undef EV_USE_INOTIFY
431# define EV_USE_INOTIFY 0 466# define EV_USE_INOTIFY 0
467#endif
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
432#endif 475#endif
433 476
434#if !EV_USE_NANOSLEEP 477#if !EV_USE_NANOSLEEP
435/* 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 */
436# if !defined _WIN32 && !defined __hpux 479# if !defined _WIN32 && !defined __hpux
… …
438# endif 481# endif
439#endif 482#endif
440 483
441#if EV_USE_LINUXAIO 484#if EV_USE_LINUXAIO
442# include <sys/syscall.h> 485# include <sys/syscall.h>
443# if !SYS_io_getevents || !EV_USE_EPOLL 486# if SYS_io_getevents && EV_USE_EPOLL /* linuxaio backend requires epoll backend */
487# define EV_NEED_SYSCALL 1
488# else
444# undef EV_USE_LINUXAIO 489# undef EV_USE_LINUXAIO
445# define EV_USE_LINUXAIO 0 490# 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
446# endif 506# endif
447#endif 507#endif
448 508
449#if EV_USE_INOTIFY 509#if EV_USE_INOTIFY
450# include <sys/statfs.h> 510# include <sys/statfs.h>
… …
455# define EV_USE_INOTIFY 0 515# define EV_USE_INOTIFY 0
456# endif 516# endif
457#endif 517#endif
458 518
459#if EV_USE_EVENTFD 519#if EV_USE_EVENTFD
460/* 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 */
461# include <stdint.h> 521# include <stdint.h>
462# ifndef EFD_NONBLOCK 522# ifndef EFD_NONBLOCK
463# define EFD_NONBLOCK O_NONBLOCK 523# define EFD_NONBLOCK O_NONBLOCK
464# endif 524# endif
465# ifndef EFD_CLOEXEC 525# ifndef EFD_CLOEXEC
… …
471# endif 531# endif
472EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags); 532EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
473#endif 533#endif
474 534
475#if EV_USE_SIGNALFD 535#if EV_USE_SIGNALFD
476/* 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 */
477# include <stdint.h> 537# include <stdint.h>
478# ifndef SFD_NONBLOCK 538# ifndef SFD_NONBLOCK
479# define SFD_NONBLOCK O_NONBLOCK 539# define SFD_NONBLOCK O_NONBLOCK
480# endif 540# endif
481# ifndef SFD_CLOEXEC 541# ifndef SFD_CLOEXEC
… …
483# define SFD_CLOEXEC O_CLOEXEC 543# define SFD_CLOEXEC O_CLOEXEC
484# else 544# else
485# define SFD_CLOEXEC 02000000 545# define SFD_CLOEXEC 02000000
486# endif 546# endif
487# endif 547# endif
488EV_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);
489 549
490struct signalfd_siginfo 550struct signalfd_siginfo
491{ 551{
492 uint32_t ssi_signo; 552 uint32_t ssi_signo;
493 char pad[128 - sizeof (uint32_t)]; 553 char pad[128 - sizeof (uint32_t)];
494}; 554};
495#endif 555#endif
496 556
497/**/ 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/*****************************************************************************/
498 568
499#if EV_VERIFY >= 3 569#if EV_VERIFY >= 3
500# define EV_FREQUENT_CHECK ev_verify (EV_A) 570# define EV_FREQUENT_CHECK ev_verify (EV_A)
501#else 571#else
502# define EV_FREQUENT_CHECK do { } while (0) 572# define EV_FREQUENT_CHECK do { } while (0)
… …
507 * This value is good at least till the year 4000. 577 * This value is good at least till the year 4000.
508 */ 578 */
509#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */ 579#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
510/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */ 580/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
511 581
512#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) */
513#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 583#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
584#define MAX_BLOCKTIME2 1500001.07 /* same, but when timerfd is used to detect jumps, also safe delay to not overflow */
514 585
586/* find a portable timestamp that is "always" in the future but fits into time_t.
587 * this is quite hard, and we are mostly guessing - we handle 32 bit signed/unsigned time_t,
588 * and sizes larger than 32 bit, and maybe the unlikely floating point time_t */
589#define EV_TSTAMP_HUGE \
590 (sizeof (time_t) >= 8 ? 10000000000000. \
591 : 0 < (time_t)4294967295 ? 4294967295. \
592 : 2147483647.) \
593
594#ifndef EV_TS_CONST
595# define EV_TS_CONST(nv) nv
596# define EV_TS_TO_MSEC(a) a * 1e3 + 0.9999
597# define EV_TS_FROM_USEC(us) us * 1e-6
515#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) 598# define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
516#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0) 599# define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
600# define EV_TV_GET(tv) ((tv).tv_sec + (tv).tv_usec * 1e-6)
601# define EV_TS_GET(ts) ((ts).tv_sec + (ts).tv_nsec * 1e-9)
602#endif
517 603
518/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ 604/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
519/* ECB.H BEGIN */ 605/* ECB.H BEGIN */
520/* 606/*
521 * libecb - http://software.schmorp.de/pkg/libecb 607 * libecb - http://software.schmorp.de/pkg/libecb
… …
559 645
560#ifndef ECB_H 646#ifndef ECB_H
561#define ECB_H 647#define ECB_H
562 648
563/* 16 bits major, 16 bits minor */ 649/* 16 bits major, 16 bits minor */
564#define ECB_VERSION 0x00010005 650#define ECB_VERSION 0x00010008
651
652#include <string.h> /* for memcpy */
565 653
566#ifdef _WIN32 654#ifdef _WIN32
567 typedef signed char int8_t; 655 typedef signed char int8_t;
568 typedef unsigned char uint8_t; 656 typedef unsigned char uint8_t;
657 typedef signed char int_fast8_t;
658 typedef unsigned char uint_fast8_t;
569 typedef signed short int16_t; 659 typedef signed short int16_t;
570 typedef unsigned short uint16_t; 660 typedef unsigned short uint16_t;
661 typedef signed int int_fast16_t;
662 typedef unsigned int uint_fast16_t;
571 typedef signed int int32_t; 663 typedef signed int int32_t;
572 typedef unsigned int uint32_t; 664 typedef unsigned int uint32_t;
665 typedef signed int int_fast32_t;
666 typedef unsigned int uint_fast32_t;
573 #if __GNUC__ 667 #if __GNUC__
574 typedef signed long long int64_t; 668 typedef signed long long int64_t;
575 typedef unsigned long long uint64_t; 669 typedef unsigned long long uint64_t;
576 #else /* _MSC_VER || __BORLANDC__ */ 670 #else /* _MSC_VER || __BORLANDC__ */
577 typedef signed __int64 int64_t; 671 typedef signed __int64 int64_t;
578 typedef unsigned __int64 uint64_t; 672 typedef unsigned __int64 uint64_t;
579 #endif 673 #endif
674 typedef int64_t int_fast64_t;
675 typedef uint64_t uint_fast64_t;
580 #ifdef _WIN64 676 #ifdef _WIN64
581 #define ECB_PTRSIZE 8 677 #define ECB_PTRSIZE 8
582 typedef uint64_t uintptr_t; 678 typedef uint64_t uintptr_t;
583 typedef int64_t intptr_t; 679 typedef int64_t intptr_t;
584 #else 680 #else
… …
596#endif 692#endif
597 693
598#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__) 694#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
599#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64) 695#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
600 696
697#ifndef ECB_OPTIMIZE_SIZE
698 #if __OPTIMIZE_SIZE__
699 #define ECB_OPTIMIZE_SIZE 1
700 #else
701 #define ECB_OPTIMIZE_SIZE 0
702 #endif
703#endif
704
601/* work around x32 idiocy by defining proper macros */ 705/* work around x32 idiocy by defining proper macros */
602#if ECB_GCC_AMD64 || ECB_MSVC_AMD64 706#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
603 #if _ILP32 707 #if _ILP32
604 #define ECB_AMD64_X32 1 708 #define ECB_AMD64_X32 1
605 #else 709 #else
… …
683 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */ 787 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
684#endif 788#endif
685 789
686#ifndef ECB_MEMORY_FENCE 790#ifndef ECB_MEMORY_FENCE
687 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 791 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
792 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
688 #if __i386 || __i386__ 793 #if __i386 || __i386__
689 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") 794 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
690 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") 795 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
691 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory") 796 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
692 #elif ECB_GCC_AMD64 797 #elif ECB_GCC_AMD64
… …
742 #if ECB_GCC_VERSION(4,7) 847 #if ECB_GCC_VERSION(4,7)
743 /* see comment below (stdatomic.h) about the C11 memory model. */ 848 /* see comment below (stdatomic.h) about the C11 memory model. */
744 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST) 849 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
745 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE) 850 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
746 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE) 851 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
852 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
747 853
748 #elif ECB_CLANG_EXTENSION(c_atomic) 854 #elif ECB_CLANG_EXTENSION(c_atomic)
749 /* see comment below (stdatomic.h) about the C11 memory model. */ 855 /* see comment below (stdatomic.h) about the C11 memory model. */
750 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) 856 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
751 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE) 857 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
752 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE) 858 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
859 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
753 860
754 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ 861 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
755 #define ECB_MEMORY_FENCE __sync_synchronize () 862 #define ECB_MEMORY_FENCE __sync_synchronize ()
756 #elif _MSC_VER >= 1500 /* VC++ 2008 */ 863 #elif _MSC_VER >= 1500 /* VC++ 2008 */
757 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */ 864 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
… …
767 #elif defined _WIN32 874 #elif defined _WIN32
768 #include <WinNT.h> 875 #include <WinNT.h>
769 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ 876 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
770 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 877 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
771 #include <mbarrier.h> 878 #include <mbarrier.h>
772 #define ECB_MEMORY_FENCE __machine_rw_barrier () 879 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
773 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier () 880 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
774 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier () 881 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
882 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
775 #elif __xlC__ 883 #elif __xlC__
776 #define ECB_MEMORY_FENCE __sync () 884 #define ECB_MEMORY_FENCE __sync ()
777 #endif 885 #endif
778#endif 886#endif
779 887
780#ifndef ECB_MEMORY_FENCE 888#ifndef ECB_MEMORY_FENCE
781 #if ECB_C11 && !defined __STDC_NO_ATOMICS__ 889 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
782 /* we assume that these memory fences work on all variables/all memory accesses, */ 890 /* we assume that these memory fences work on all variables/all memory accesses, */
783 /* not just C11 atomics and atomic accesses */ 891 /* not just C11 atomics and atomic accesses */
784 #include <stdatomic.h> 892 #include <stdatomic.h>
785 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
786 /* any fence other than seq_cst, which isn't very efficient for us. */
787 /* Why that is, we don't know - either the C11 memory model is quite useless */
788 /* for most usages, or gcc and clang have a bug */
789 /* I *currently* lean towards the latter, and inefficiently implement */
790 /* all three of ecb's fences as a seq_cst fence */
791 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
792 /* for all __atomic_thread_fence's except seq_cst */
793 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst) 893 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
894 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
895 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
794 #endif 896 #endif
795#endif 897#endif
796 898
797#ifndef ECB_MEMORY_FENCE 899#ifndef ECB_MEMORY_FENCE
798 #if !ECB_AVOID_PTHREADS 900 #if !ECB_AVOID_PTHREADS
… …
816 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 918 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
817#endif 919#endif
818 920
819#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE 921#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
820 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 922 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
923#endif
924
925#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
926 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
821#endif 927#endif
822 928
823/*****************************************************************************/ 929/*****************************************************************************/
824 930
825#if ECB_CPP 931#if ECB_CPP
… …
1109ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } 1215ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1110ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } 1216ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1111ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } 1217ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1112ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } 1218ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1113 1219
1220#if ECB_CPP
1221
1222inline uint8_t ecb_ctz (uint8_t v) { return ecb_ctz32 (v); }
1223inline uint16_t ecb_ctz (uint16_t v) { return ecb_ctz32 (v); }
1224inline uint32_t ecb_ctz (uint32_t v) { return ecb_ctz32 (v); }
1225inline uint64_t ecb_ctz (uint64_t v) { return ecb_ctz64 (v); }
1226
1227inline bool ecb_is_pot (uint8_t v) { return ecb_is_pot32 (v); }
1228inline bool ecb_is_pot (uint16_t v) { return ecb_is_pot32 (v); }
1229inline bool ecb_is_pot (uint32_t v) { return ecb_is_pot32 (v); }
1230inline bool ecb_is_pot (uint64_t v) { return ecb_is_pot64 (v); }
1231
1232inline int ecb_ld (uint8_t v) { return ecb_ld32 (v); }
1233inline int ecb_ld (uint16_t v) { return ecb_ld32 (v); }
1234inline int ecb_ld (uint32_t v) { return ecb_ld32 (v); }
1235inline int ecb_ld (uint64_t v) { return ecb_ld64 (v); }
1236
1237inline int ecb_popcount (uint8_t v) { return ecb_popcount32 (v); }
1238inline int ecb_popcount (uint16_t v) { return ecb_popcount32 (v); }
1239inline int ecb_popcount (uint32_t v) { return ecb_popcount32 (v); }
1240inline int ecb_popcount (uint64_t v) { return ecb_popcount64 (v); }
1241
1242inline uint8_t ecb_bitrev (uint8_t v) { return ecb_bitrev8 (v); }
1243inline uint16_t ecb_bitrev (uint16_t v) { return ecb_bitrev16 (v); }
1244inline uint32_t ecb_bitrev (uint32_t v) { return ecb_bitrev32 (v); }
1245
1246inline uint8_t ecb_rotl (uint8_t v, unsigned int count) { return ecb_rotl8 (v, count); }
1247inline uint16_t ecb_rotl (uint16_t v, unsigned int count) { return ecb_rotl16 (v, count); }
1248inline uint32_t ecb_rotl (uint32_t v, unsigned int count) { return ecb_rotl32 (v, count); }
1249inline uint64_t ecb_rotl (uint64_t v, unsigned int count) { return ecb_rotl64 (v, count); }
1250
1251inline uint8_t ecb_rotr (uint8_t v, unsigned int count) { return ecb_rotr8 (v, count); }
1252inline uint16_t ecb_rotr (uint16_t v, unsigned int count) { return ecb_rotr16 (v, count); }
1253inline uint32_t ecb_rotr (uint32_t v, unsigned int count) { return ecb_rotr32 (v, count); }
1254inline uint64_t ecb_rotr (uint64_t v, unsigned int count) { return ecb_rotr64 (v, count); }
1255
1256#endif
1257
1114#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64)) 1258#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1115 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16) 1259 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1116 #define ecb_bswap16(x) __builtin_bswap16 (x) 1260 #define ecb_bswap16(x) __builtin_bswap16 (x)
1117 #else 1261 #else
1118 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 1262 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
… …
1189ecb_inline ecb_const ecb_bool ecb_big_endian (void); 1333ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1190ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; } 1334ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1191ecb_inline ecb_const ecb_bool ecb_little_endian (void); 1335ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1192ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; } 1336ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1193 1337
1338/*****************************************************************************/
1339/* unaligned load/store */
1340
1341ecb_inline uint_fast16_t ecb_be_u16_to_host (uint_fast16_t v) { return ecb_little_endian () ? ecb_bswap16 (v) : v; }
1342ecb_inline uint_fast32_t ecb_be_u32_to_host (uint_fast32_t v) { return ecb_little_endian () ? ecb_bswap32 (v) : v; }
1343ecb_inline uint_fast64_t ecb_be_u64_to_host (uint_fast64_t v) { return ecb_little_endian () ? ecb_bswap64 (v) : v; }
1344
1345ecb_inline uint_fast16_t ecb_le_u16_to_host (uint_fast16_t v) { return ecb_big_endian () ? ecb_bswap16 (v) : v; }
1346ecb_inline uint_fast32_t ecb_le_u32_to_host (uint_fast32_t v) { return ecb_big_endian () ? ecb_bswap32 (v) : v; }
1347ecb_inline uint_fast64_t ecb_le_u64_to_host (uint_fast64_t v) { return ecb_big_endian () ? ecb_bswap64 (v) : v; }
1348
1349ecb_inline uint_fast16_t ecb_peek_u16_u (const void *ptr) { uint16_t v; memcpy (&v, ptr, sizeof (v)); return v; }
1350ecb_inline uint_fast32_t ecb_peek_u32_u (const void *ptr) { uint32_t v; memcpy (&v, ptr, sizeof (v)); return v; }
1351ecb_inline uint_fast64_t ecb_peek_u64_u (const void *ptr) { uint64_t v; memcpy (&v, ptr, sizeof (v)); return v; }
1352
1353ecb_inline uint_fast16_t ecb_peek_be_u16_u (const void *ptr) { return ecb_be_u16_to_host (ecb_peek_u16_u (ptr)); }
1354ecb_inline uint_fast32_t ecb_peek_be_u32_u (const void *ptr) { return ecb_be_u32_to_host (ecb_peek_u32_u (ptr)); }
1355ecb_inline uint_fast64_t ecb_peek_be_u64_u (const void *ptr) { return ecb_be_u64_to_host (ecb_peek_u64_u (ptr)); }
1356
1357ecb_inline uint_fast16_t ecb_peek_le_u16_u (const void *ptr) { return ecb_le_u16_to_host (ecb_peek_u16_u (ptr)); }
1358ecb_inline uint_fast32_t ecb_peek_le_u32_u (const void *ptr) { return ecb_le_u32_to_host (ecb_peek_u32_u (ptr)); }
1359ecb_inline uint_fast64_t ecb_peek_le_u64_u (const void *ptr) { return ecb_le_u64_to_host (ecb_peek_u64_u (ptr)); }
1360
1361ecb_inline uint_fast16_t ecb_host_to_be_u16 (uint_fast16_t v) { return ecb_little_endian () ? ecb_bswap16 (v) : v; }
1362ecb_inline uint_fast32_t ecb_host_to_be_u32 (uint_fast32_t v) { return ecb_little_endian () ? ecb_bswap32 (v) : v; }
1363ecb_inline uint_fast64_t ecb_host_to_be_u64 (uint_fast64_t v) { return ecb_little_endian () ? ecb_bswap64 (v) : v; }
1364
1365ecb_inline uint_fast16_t ecb_host_to_le_u16 (uint_fast16_t v) { return ecb_big_endian () ? ecb_bswap16 (v) : v; }
1366ecb_inline uint_fast32_t ecb_host_to_le_u32 (uint_fast32_t v) { return ecb_big_endian () ? ecb_bswap32 (v) : v; }
1367ecb_inline uint_fast64_t ecb_host_to_le_u64 (uint_fast64_t v) { return ecb_big_endian () ? ecb_bswap64 (v) : v; }
1368
1369ecb_inline void ecb_poke_u16_u (void *ptr, uint16_t v) { memcpy (ptr, &v, sizeof (v)); }
1370ecb_inline void ecb_poke_u32_u (void *ptr, uint32_t v) { memcpy (ptr, &v, sizeof (v)); }
1371ecb_inline void ecb_poke_u64_u (void *ptr, uint64_t v) { memcpy (ptr, &v, sizeof (v)); }
1372
1373ecb_inline void ecb_poke_be_u16_u (void *ptr, uint_fast16_t v) { ecb_poke_u16_u (ptr, ecb_host_to_be_u16 (v)); }
1374ecb_inline void ecb_poke_be_u32_u (void *ptr, uint_fast32_t v) { ecb_poke_u32_u (ptr, ecb_host_to_be_u32 (v)); }
1375ecb_inline void ecb_poke_be_u64_u (void *ptr, uint_fast64_t v) { ecb_poke_u64_u (ptr, ecb_host_to_be_u64 (v)); }
1376
1377ecb_inline void ecb_poke_le_u16_u (void *ptr, uint_fast16_t v) { ecb_poke_u16_u (ptr, ecb_host_to_le_u16 (v)); }
1378ecb_inline void ecb_poke_le_u32_u (void *ptr, uint_fast32_t v) { ecb_poke_u32_u (ptr, ecb_host_to_le_u32 (v)); }
1379ecb_inline void ecb_poke_le_u64_u (void *ptr, uint_fast64_t v) { ecb_poke_u64_u (ptr, ecb_host_to_le_u64 (v)); }
1380
1381#if ECB_CPP
1382
1383inline uint8_t ecb_bswap (uint8_t v) { return v; }
1384inline uint16_t ecb_bswap (uint16_t v) { return ecb_bswap16 (v); }
1385inline uint32_t ecb_bswap (uint32_t v) { return ecb_bswap32 (v); }
1386inline uint64_t ecb_bswap (uint64_t v) { return ecb_bswap64 (v); }
1387
1388template<typename T> inline T ecb_be_to_host (T v) { return ecb_little_endian () ? ecb_bswap (v) : v; }
1389template<typename T> inline T ecb_le_to_host (T v) { return ecb_big_endian () ? ecb_bswap (v) : v; }
1390template<typename T> inline T ecb_peek (const void *ptr) { return *(const T *)ptr; }
1391template<typename T> inline T ecb_peek_be (const void *ptr) { return ecb_be_to_host (ecb_peek <T> (ptr)); }
1392template<typename T> inline T ecb_peek_le (const void *ptr) { return ecb_le_to_host (ecb_peek <T> (ptr)); }
1393template<typename T> inline T ecb_peek_u (const void *ptr) { T v; memcpy (&v, ptr, sizeof (v)); return v; }
1394template<typename T> inline T ecb_peek_be_u (const void *ptr) { return ecb_be_to_host (ecb_peek_u<T> (ptr)); }
1395template<typename T> inline T ecb_peek_le_u (const void *ptr) { return ecb_le_to_host (ecb_peek_u<T> (ptr)); }
1396
1397template<typename T> inline T ecb_host_to_be (T v) { return ecb_little_endian () ? ecb_bswap (v) : v; }
1398template<typename T> inline T ecb_host_to_le (T v) { return ecb_big_endian () ? ecb_bswap (v) : v; }
1399template<typename T> inline void ecb_poke (void *ptr, T v) { *(T *)ptr = v; }
1400template<typename T> inline void ecb_poke_be (void *ptr, T v) { return ecb_poke <T> (ptr, ecb_host_to_be (v)); }
1401template<typename T> inline void ecb_poke_le (void *ptr, T v) { return ecb_poke <T> (ptr, ecb_host_to_le (v)); }
1402template<typename T> inline void ecb_poke_u (void *ptr, T v) { memcpy (ptr, &v, sizeof (v)); }
1403template<typename T> inline void ecb_poke_be_u (void *ptr, T v) { return ecb_poke_u<T> (ptr, ecb_host_to_be (v)); }
1404template<typename T> inline void ecb_poke_le_u (void *ptr, T v) { return ecb_poke_u<T> (ptr, ecb_host_to_le (v)); }
1405
1406#endif
1407
1408/*****************************************************************************/
1409
1194#if ECB_GCC_VERSION(3,0) || ECB_C99 1410#if ECB_GCC_VERSION(3,0) || ECB_C99
1195 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) 1411 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1196#else 1412#else
1197 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) 1413 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1198#endif 1414#endif
… …
1221 return N; 1437 return N;
1222 } 1438 }
1223#else 1439#else
1224 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1440 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1225#endif 1441#endif
1442
1443/*****************************************************************************/
1226 1444
1227ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x); 1445ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1228ecb_function_ ecb_const uint32_t 1446ecb_function_ ecb_const uint32_t
1229ecb_binary16_to_binary32 (uint32_t x) 1447ecb_binary16_to_binary32 (uint32_t x)
1230{ 1448{
… …
1339 || defined __sh__ \ 1557 || defined __sh__ \
1340 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \ 1558 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1341 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \ 1559 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1342 || defined __aarch64__ 1560 || defined __aarch64__
1343 #define ECB_STDFP 1 1561 #define ECB_STDFP 1
1344 #include <string.h> /* for memcpy */
1345#else 1562#else
1346 #define ECB_STDFP 0 1563 #define ECB_STDFP 0
1347#endif 1564#endif
1348 1565
1349#ifndef ECB_NO_LIBM 1566#ifndef ECB_NO_LIBM
… …
1534/* ECB.H END */ 1751/* ECB.H END */
1535 1752
1536#if ECB_MEMORY_FENCE_NEEDS_PTHREADS 1753#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1537/* if your architecture doesn't need memory fences, e.g. because it is 1754/* if your architecture doesn't need memory fences, e.g. because it is
1538 * single-cpu/core, or if you use libev in a project that doesn't use libev 1755 * single-cpu/core, or if you use libev in a project that doesn't use libev
1539 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling 1756 * from multiple threads, then you can define ECB_NO_THREADS when compiling
1540 * libev, in which cases the memory fences become nops. 1757 * libev, in which cases the memory fences become nops.
1541 * alternatively, you can remove this #error and link against libpthread, 1758 * alternatively, you can remove this #error and link against libpthread,
1542 * which will then provide the memory fences. 1759 * which will then provide the memory fences.
1543 */ 1760 */
1544# error "memory fences not defined for your architecture, please report" 1761# error "memory fences not defined for your architecture, please report"
… …
1548# define ECB_MEMORY_FENCE do { } while (0) 1765# define ECB_MEMORY_FENCE do { } while (0)
1549# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 1766# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1550# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 1767# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1551#endif 1768#endif
1552 1769
1553#define expect_false(cond) ecb_expect_false (cond)
1554#define expect_true(cond) ecb_expect_true (cond)
1555#define noinline ecb_noinline
1556
1557#define inline_size ecb_inline 1770#define inline_size ecb_inline
1558 1771
1559#if EV_FEATURE_CODE 1772#if EV_FEATURE_CODE
1560# define inline_speed ecb_inline 1773# define inline_speed ecb_inline
1561#else 1774#else
1562# define inline_speed noinline static 1775# define inline_speed ecb_noinline static
1563#endif 1776#endif
1777
1778/*****************************************************************************/
1779/* raw syscall wrappers */
1780
1781#if EV_NEED_SYSCALL
1782
1783#include <sys/syscall.h>
1784
1785/*
1786 * define some syscall wrappers for common architectures
1787 * this is mostly for nice looks during debugging, not performance.
1788 * our syscalls return < 0, not == -1, on error. which is good
1789 * enough for linux aio.
1790 * TODO: arm is also common nowadays, maybe even mips and x86
1791 * TODO: after implementing this, it suddenly looks like overkill, but its hard to remove...
1792 */
1793#if __GNUC__ && __linux && ECB_AMD64 && !EV_FEATURE_CODE
1794 /* the costly errno access probably kills this for size optimisation */
1795
1796 #define ev_syscall(nr,narg,arg1,arg2,arg3,arg4,arg5,arg6) \
1797 ({ \
1798 long res; \
1799 register unsigned long r6 __asm__ ("r9" ); \
1800 register unsigned long r5 __asm__ ("r8" ); \
1801 register unsigned long r4 __asm__ ("r10"); \
1802 register unsigned long r3 __asm__ ("rdx"); \
1803 register unsigned long r2 __asm__ ("rsi"); \
1804 register unsigned long r1 __asm__ ("rdi"); \
1805 if (narg >= 6) r6 = (unsigned long)(arg6); \
1806 if (narg >= 5) r5 = (unsigned long)(arg5); \
1807 if (narg >= 4) r4 = (unsigned long)(arg4); \
1808 if (narg >= 3) r3 = (unsigned long)(arg3); \
1809 if (narg >= 2) r2 = (unsigned long)(arg2); \
1810 if (narg >= 1) r1 = (unsigned long)(arg1); \
1811 __asm__ __volatile__ ( \
1812 "syscall\n\t" \
1813 : "=a" (res) \
1814 : "0" (nr), "r" (r1), "r" (r2), "r" (r3), "r" (r4), "r" (r5) \
1815 : "cc", "r11", "cx", "memory"); \
1816 errno = -res; \
1817 res; \
1818 })
1819
1820#endif
1821
1822#ifdef ev_syscall
1823 #define ev_syscall0(nr) ev_syscall (nr, 0, 0, 0, 0, 0, 0, 0)
1824 #define ev_syscall1(nr,arg1) ev_syscall (nr, 1, arg1, 0, 0, 0, 0, 0)
1825 #define ev_syscall2(nr,arg1,arg2) ev_syscall (nr, 2, arg1, arg2, 0, 0, 0, 0)
1826 #define ev_syscall3(nr,arg1,arg2,arg3) ev_syscall (nr, 3, arg1, arg2, arg3, 0, 0, 0)
1827 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) ev_syscall (nr, 3, arg1, arg2, arg3, arg4, 0, 0)
1828 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) ev_syscall (nr, 5, arg1, arg2, arg3, arg4, arg5, 0)
1829 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) ev_syscall (nr, 6, arg1, arg2, arg3, arg4, arg5,arg6)
1830#else
1831 #define ev_syscall0(nr) syscall (nr)
1832 #define ev_syscall1(nr,arg1) syscall (nr, arg1)
1833 #define ev_syscall2(nr,arg1,arg2) syscall (nr, arg1, arg2)
1834 #define ev_syscall3(nr,arg1,arg2,arg3) syscall (nr, arg1, arg2, arg3)
1835 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) syscall (nr, arg1, arg2, arg3, arg4)
1836 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) syscall (nr, arg1, arg2, arg3, arg4, arg5)
1837 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) syscall (nr, arg1, arg2, arg3, arg4, arg5,arg6)
1838#endif
1839
1840#endif
1841
1842/*****************************************************************************/
1564 1843
1565#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1844#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
1566 1845
1567#if EV_MINPRI == EV_MAXPRI 1846#if EV_MINPRI == EV_MAXPRI
1568# define ABSPRI(w) (((W)w), 0) 1847# define ABSPRI(w) (((W)w), 0)
… …
1617#else 1896#else
1618 1897
1619#include <float.h> 1898#include <float.h>
1620 1899
1621/* a floor() replacement function, should be independent of ev_tstamp type */ 1900/* a floor() replacement function, should be independent of ev_tstamp type */
1622noinline 1901ecb_noinline
1623static ev_tstamp 1902static ev_tstamp
1624ev_floor (ev_tstamp v) 1903ev_floor (ev_tstamp v)
1625{ 1904{
1626 /* the choice of shift factor is not terribly important */ 1905 /* the choice of shift factor is not terribly important */
1627#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1906#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1628 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1907 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1629#else 1908#else
1630 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; 1909 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1631#endif 1910#endif
1632 1911
1912 /* special treatment for negative arguments */
1913 if (ecb_expect_false (v < 0.))
1914 {
1915 ev_tstamp f = -ev_floor (-v);
1916
1917 return f - (f == v ? 0 : 1);
1918 }
1919
1633 /* argument too large for an unsigned long? */ 1920 /* argument too large for an unsigned long? then reduce it */
1634 if (expect_false (v >= shift)) 1921 if (ecb_expect_false (v >= shift))
1635 { 1922 {
1636 ev_tstamp f; 1923 ev_tstamp f;
1637 1924
1638 if (v == v - 1.) 1925 if (v == v - 1.)
1639 return v; /* very large number */ 1926 return v; /* very large numbers are assumed to be integer */
1640 1927
1641 f = shift * ev_floor (v * (1. / shift)); 1928 f = shift * ev_floor (v * (1. / shift));
1642 return f + ev_floor (v - f); 1929 return f + ev_floor (v - f);
1643 } 1930 }
1644 1931
1645 /* special treatment for negative args? */
1646 if (expect_false (v < 0.))
1647 {
1648 ev_tstamp f = -ev_floor (-v);
1649
1650 return f - (f == v ? 0 : 1);
1651 }
1652
1653 /* fits into an unsigned long */ 1932 /* fits into an unsigned long */
1654 return (unsigned long)v; 1933 return (unsigned long)v;
1655} 1934}
1656 1935
1657#endif 1936#endif
… …
1660 1939
1661#ifdef __linux 1940#ifdef __linux
1662# include <sys/utsname.h> 1941# include <sys/utsname.h>
1663#endif 1942#endif
1664 1943
1665noinline ecb_cold 1944ecb_noinline ecb_cold
1666static unsigned int 1945static unsigned int
1667ev_linux_version (void) 1946ev_linux_version (void)
1668{ 1947{
1669#ifdef __linux 1948#ifdef __linux
1670 unsigned int v = 0; 1949 unsigned int v = 0;
… …
1700} 1979}
1701 1980
1702/*****************************************************************************/ 1981/*****************************************************************************/
1703 1982
1704#if EV_AVOID_STDIO 1983#if EV_AVOID_STDIO
1705noinline ecb_cold 1984ecb_noinline ecb_cold
1706static void 1985static void
1707ev_printerr (const char *msg) 1986ev_printerr (const char *msg)
1708{ 1987{
1709 write (STDERR_FILENO, msg, strlen (msg)); 1988 write (STDERR_FILENO, msg, strlen (msg));
1710} 1989}
… …
1717ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT 1996ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
1718{ 1997{
1719 syserr_cb = cb; 1998 syserr_cb = cb;
1720} 1999}
1721 2000
1722noinline ecb_cold 2001ecb_noinline ecb_cold
1723static void 2002static void
1724ev_syserr (const char *msg) 2003ev_syserr (const char *msg)
1725{ 2004{
1726 if (!msg) 2005 if (!msg)
1727 msg = "(libev) system error"; 2006 msg = "(libev) system error";
… …
1799{ 2078{
1800 WL head; 2079 WL head;
1801 unsigned char events; /* the events watched for */ 2080 unsigned char events; /* the events watched for */
1802 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 2081 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
1803 unsigned char emask; /* some backends store the actual kernel mask in here */ 2082 unsigned char emask; /* some backends store the actual kernel mask in here */
1804 unsigned char unused; 2083 unsigned char eflags; /* flags field for use by backends */
1805#if EV_USE_EPOLL 2084#if EV_USE_EPOLL
1806 unsigned int egen; /* generation counter to counter epoll bugs */ 2085 unsigned int egen; /* generation counter to counter epoll bugs */
1807#endif 2086#endif
1808#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 2087#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1809 SOCKET handle; 2088 SOCKET handle;
… …
1863 static struct ev_loop default_loop_struct; 2142 static struct ev_loop default_loop_struct;
1864 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */ 2143 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
1865 2144
1866#else 2145#else
1867 2146
1868 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */ 2147 EV_API_DECL ev_tstamp ev_rt_now = EV_TS_CONST (0.); /* needs to be initialised to make it a definition despite extern */
1869 #define VAR(name,decl) static decl; 2148 #define VAR(name,decl) static decl;
1870 #include "ev_vars.h" 2149 #include "ev_vars.h"
1871 #undef VAR 2150 #undef VAR
1872 2151
1873 static int ev_default_loop_ptr; 2152 static int ev_default_loop_ptr;
1874 2153
1875#endif 2154#endif
1876 2155
1877#if EV_FEATURE_API 2156#if EV_FEATURE_API
1878# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 2157# define EV_RELEASE_CB if (ecb_expect_false (release_cb)) release_cb (EV_A)
1879# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 2158# define EV_ACQUIRE_CB if (ecb_expect_false (acquire_cb)) acquire_cb (EV_A)
1880# define EV_INVOKE_PENDING invoke_cb (EV_A) 2159# define EV_INVOKE_PENDING invoke_cb (EV_A)
1881#else 2160#else
1882# define EV_RELEASE_CB (void)0 2161# define EV_RELEASE_CB (void)0
1883# define EV_ACQUIRE_CB (void)0 2162# define EV_ACQUIRE_CB (void)0
1884# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 2163# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
… …
1891#ifndef EV_HAVE_EV_TIME 2170#ifndef EV_HAVE_EV_TIME
1892ev_tstamp 2171ev_tstamp
1893ev_time (void) EV_NOEXCEPT 2172ev_time (void) EV_NOEXCEPT
1894{ 2173{
1895#if EV_USE_REALTIME 2174#if EV_USE_REALTIME
1896 if (expect_true (have_realtime)) 2175 if (ecb_expect_true (have_realtime))
1897 { 2176 {
1898 struct timespec ts; 2177 struct timespec ts;
1899 clock_gettime (CLOCK_REALTIME, &ts); 2178 clock_gettime (CLOCK_REALTIME, &ts);
1900 return ts.tv_sec + ts.tv_nsec * 1e-9; 2179 return EV_TS_GET (ts);
1901 } 2180 }
1902#endif 2181#endif
1903 2182
2183 {
1904 struct timeval tv; 2184 struct timeval tv;
1905 gettimeofday (&tv, 0); 2185 gettimeofday (&tv, 0);
1906 return tv.tv_sec + tv.tv_usec * 1e-6; 2186 return EV_TV_GET (tv);
2187 }
1907} 2188}
1908#endif 2189#endif
1909 2190
1910inline_size ev_tstamp 2191inline_size ev_tstamp
1911get_clock (void) 2192get_clock (void)
1912{ 2193{
1913#if EV_USE_MONOTONIC 2194#if EV_USE_MONOTONIC
1914 if (expect_true (have_monotonic)) 2195 if (ecb_expect_true (have_monotonic))
1915 { 2196 {
1916 struct timespec ts; 2197 struct timespec ts;
1917 clock_gettime (CLOCK_MONOTONIC, &ts); 2198 clock_gettime (CLOCK_MONOTONIC, &ts);
1918 return ts.tv_sec + ts.tv_nsec * 1e-9; 2199 return EV_TS_GET (ts);
1919 } 2200 }
1920#endif 2201#endif
1921 2202
1922 return ev_time (); 2203 return ev_time ();
1923} 2204}
… …
1931#endif 2212#endif
1932 2213
1933void 2214void
1934ev_sleep (ev_tstamp delay) EV_NOEXCEPT 2215ev_sleep (ev_tstamp delay) EV_NOEXCEPT
1935{ 2216{
1936 if (delay > 0.) 2217 if (delay > EV_TS_CONST (0.))
1937 { 2218 {
1938#if EV_USE_NANOSLEEP 2219#if EV_USE_NANOSLEEP
1939 struct timespec ts; 2220 struct timespec ts;
1940 2221
1941 EV_TS_SET (ts, delay); 2222 EV_TS_SET (ts, delay);
1942 nanosleep (&ts, 0); 2223 nanosleep (&ts, 0);
1943#elif defined _WIN32 2224#elif defined _WIN32
1944 /* maybe this should round up, as ms is very low resolution */ 2225 /* maybe this should round up, as ms is very low resolution */
1945 /* compared to select (µs) or nanosleep (ns) */ 2226 /* compared to select (µs) or nanosleep (ns) */
1946 Sleep ((unsigned long)(delay * 1e3)); 2227 Sleep ((unsigned long)(EV_TS_TO_MSEC (delay)));
1947#else 2228#else
1948 struct timeval tv; 2229 struct timeval tv;
1949 2230
1950 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 2231 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
1951 /* something not guaranteed by newer posix versions, but guaranteed */ 2232 /* something not guaranteed by newer posix versions, but guaranteed */
… …
1981 } 2262 }
1982 2263
1983 return ncur; 2264 return ncur;
1984} 2265}
1985 2266
1986noinline ecb_cold 2267ecb_noinline ecb_cold
1987static void * 2268static void *
1988array_realloc (int elem, void *base, int *cur, int cnt) 2269array_realloc (int elem, void *base, int *cur, int cnt)
1989{ 2270{
1990 *cur = array_nextsize (elem, *cur, cnt); 2271 *cur = array_nextsize (elem, *cur, cnt);
1991 return ev_realloc (base, elem * *cur); 2272 return ev_realloc (base, elem * *cur);
1992} 2273}
1993 2274
1994#define array_needsize_noinit(base,count) 2275#define array_needsize_noinit(base,offset,count)
1995 2276
1996#define array_needsize_zerofill(base,count) \ 2277#define array_needsize_zerofill(base,offset,count) \
1997 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2278 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
1998 2279
1999#define array_needsize(type,base,cur,cnt,init) \ 2280#define array_needsize(type,base,cur,cnt,init) \
2000 if (expect_false ((cnt) > (cur))) \ 2281 if (ecb_expect_false ((cnt) > (cur))) \
2001 { \ 2282 { \
2002 ecb_unused int ocur_ = (cur); \ 2283 ecb_unused int ocur_ = (cur); \
2003 (base) = (type *)array_realloc \ 2284 (base) = (type *)array_realloc \
2004 (sizeof (type), (base), &(cur), (cnt)); \ 2285 (sizeof (type), (base), &(cur), (cnt)); \
2005 init ((base) + (ocur_), (cur) - ocur_); \ 2286 init ((base), ocur_, ((cur) - ocur_)); \
2006 } 2287 }
2007 2288
2008#if 0 2289#if 0
2009#define array_slim(type,stem) \ 2290#define array_slim(type,stem) \
2010 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2291 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
2019 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2300 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
2020 2301
2021/*****************************************************************************/ 2302/*****************************************************************************/
2022 2303
2023/* dummy callback for pending events */ 2304/* dummy callback for pending events */
2024noinline 2305ecb_noinline
2025static void 2306static void
2026pendingcb (EV_P_ ev_prepare *w, int revents) 2307pendingcb (EV_P_ ev_prepare *w, int revents)
2027{ 2308{
2028} 2309}
2029 2310
2030noinline 2311ecb_noinline
2031void 2312void
2032ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT 2313ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
2033{ 2314{
2034 W w_ = (W)w; 2315 W w_ = (W)w;
2035 int pri = ABSPRI (w_); 2316 int pri = ABSPRI (w_);
2036 2317
2037 if (expect_false (w_->pending)) 2318 if (ecb_expect_false (w_->pending))
2038 pendings [pri][w_->pending - 1].events |= revents; 2319 pendings [pri][w_->pending - 1].events |= revents;
2039 else 2320 else
2040 { 2321 {
2041 w_->pending = ++pendingcnt [pri]; 2322 w_->pending = ++pendingcnt [pri];
2042 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit); 2323 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
… …
2093inline_speed void 2374inline_speed void
2094fd_event (EV_P_ int fd, int revents) 2375fd_event (EV_P_ int fd, int revents)
2095{ 2376{
2096 ANFD *anfd = anfds + fd; 2377 ANFD *anfd = anfds + fd;
2097 2378
2098 if (expect_true (!anfd->reify)) 2379 if (ecb_expect_true (!anfd->reify))
2099 fd_event_nocheck (EV_A_ fd, revents); 2380 fd_event_nocheck (EV_A_ fd, revents);
2100} 2381}
2101 2382
2102void 2383void
2103ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT 2384ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
… …
2111inline_size void 2392inline_size void
2112fd_reify (EV_P) 2393fd_reify (EV_P)
2113{ 2394{
2114 int i; 2395 int i;
2115 2396
2397 /* most backends do not modify the fdchanges list in backend_modfiy.
2398 * except io_uring, which has fixed-size buffers which might force us
2399 * to handle events in backend_modify, causing fdchanges to be amended,
2400 * which could result in an endless loop.
2401 * to avoid this, we do not dynamically handle fds that were added
2402 * during fd_reify. that means that for those backends, fdchangecnt
2403 * might be non-zero during poll, which must cause them to not block.
2404 * to not put too much of a burden on other backends, this detail
2405 * needs to be handled in the backend.
2406 */
2407 int changecnt = fdchangecnt;
2408
2116#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 2409#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
2117 for (i = 0; i < fdchangecnt; ++i) 2410 for (i = 0; i < changecnt; ++i)
2118 { 2411 {
2119 int fd = fdchanges [i]; 2412 int fd = fdchanges [i];
2120 ANFD *anfd = anfds + fd; 2413 ANFD *anfd = anfds + fd;
2121 2414
2122 if (anfd->reify & EV__IOFDSET && anfd->head) 2415 if (anfd->reify & EV__IOFDSET && anfd->head)
… …
2136 } 2429 }
2137 } 2430 }
2138 } 2431 }
2139#endif 2432#endif
2140 2433
2141 for (i = 0; i < fdchangecnt; ++i) 2434 for (i = 0; i < changecnt; ++i)
2142 { 2435 {
2143 int fd = fdchanges [i]; 2436 int fd = fdchanges [i];
2144 ANFD *anfd = anfds + fd; 2437 ANFD *anfd = anfds + fd;
2145 ev_io *w; 2438 ev_io *w;
2146 2439
2147 unsigned char o_events = anfd->events; 2440 unsigned char o_events = anfd->events;
2148 unsigned char o_reify = anfd->reify; 2441 unsigned char o_reify = anfd->reify;
2149 2442
2150 anfd->reify = 0; 2443 anfd->reify = 0;
2151 2444
2152 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 2445 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
2153 { 2446 {
2154 anfd->events = 0; 2447 anfd->events = 0;
2155 2448
2156 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2449 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
2157 anfd->events |= (unsigned char)w->events; 2450 anfd->events |= (unsigned char)w->events;
… …
2162 2455
2163 if (o_reify & EV__IOFDSET) 2456 if (o_reify & EV__IOFDSET)
2164 backend_modify (EV_A_ fd, o_events, anfd->events); 2457 backend_modify (EV_A_ fd, o_events, anfd->events);
2165 } 2458 }
2166 2459
2460 /* normally, fdchangecnt hasn't changed. if it has, then new fds have been added.
2461 * this is a rare case (see beginning comment in this function), so we copy them to the
2462 * front and hope the backend handles this case.
2463 */
2464 if (ecb_expect_false (fdchangecnt != changecnt))
2465 memmove (fdchanges, fdchanges + changecnt, (fdchangecnt - changecnt) * sizeof (*fdchanges));
2466
2167 fdchangecnt = 0; 2467 fdchangecnt -= changecnt;
2168} 2468}
2169 2469
2170/* something about the given fd changed */ 2470/* something about the given fd changed */
2171inline_size 2471inline_size
2172void 2472void
2173fd_change (EV_P_ int fd, int flags) 2473fd_change (EV_P_ int fd, int flags)
2174{ 2474{
2175 unsigned char reify = anfds [fd].reify; 2475 unsigned char reify = anfds [fd].reify;
2176 anfds [fd].reify |= flags; 2476 anfds [fd].reify |= flags;
2177 2477
2178 if (expect_true (!reify)) 2478 if (ecb_expect_true (!reify))
2179 { 2479 {
2180 ++fdchangecnt; 2480 ++fdchangecnt;
2181 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit); 2481 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
2182 fdchanges [fdchangecnt - 1] = fd; 2482 fdchanges [fdchangecnt - 1] = fd;
2183 } 2483 }
… …
2206 return fcntl (fd, F_GETFD) != -1; 2506 return fcntl (fd, F_GETFD) != -1;
2207#endif 2507#endif
2208} 2508}
2209 2509
2210/* called on EBADF to verify fds */ 2510/* called on EBADF to verify fds */
2211noinline ecb_cold 2511ecb_noinline ecb_cold
2212static void 2512static void
2213fd_ebadf (EV_P) 2513fd_ebadf (EV_P)
2214{ 2514{
2215 int fd; 2515 int fd;
2216 2516
… …
2219 if (!fd_valid (fd) && errno == EBADF) 2519 if (!fd_valid (fd) && errno == EBADF)
2220 fd_kill (EV_A_ fd); 2520 fd_kill (EV_A_ fd);
2221} 2521}
2222 2522
2223/* called on ENOMEM in select/poll to kill some fds and retry */ 2523/* called on ENOMEM in select/poll to kill some fds and retry */
2224noinline ecb_cold 2524ecb_noinline ecb_cold
2225static void 2525static void
2226fd_enomem (EV_P) 2526fd_enomem (EV_P)
2227{ 2527{
2228 int fd; 2528 int fd;
2229 2529
… …
2234 break; 2534 break;
2235 } 2535 }
2236} 2536}
2237 2537
2238/* usually called after fork if backend needs to re-arm all fds from scratch */ 2538/* usually called after fork if backend needs to re-arm all fds from scratch */
2239noinline 2539ecb_noinline
2240static void 2540static void
2241fd_rearm_all (EV_P) 2541fd_rearm_all (EV_P)
2242{ 2542{
2243 int fd; 2543 int fd;
2244 2544
… …
2298 ev_tstamp minat; 2598 ev_tstamp minat;
2299 ANHE *minpos; 2599 ANHE *minpos;
2300 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2600 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
2301 2601
2302 /* find minimum child */ 2602 /* find minimum child */
2303 if (expect_true (pos + DHEAP - 1 < E)) 2603 if (ecb_expect_true (pos + DHEAP - 1 < E))
2304 { 2604 {
2305 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2605 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
2306 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2606 if ( minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
2307 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2607 if ( minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
2308 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2608 if ( minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
2309 } 2609 }
2310 else if (pos < E) 2610 else if (pos < E)
2311 { 2611 {
2312 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2612 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
2313 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2613 if (pos + 1 < E && minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
2314 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2614 if (pos + 2 < E && minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
2315 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2615 if (pos + 3 < E && minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
2316 } 2616 }
2317 else 2617 else
2318 break; 2618 break;
2319 2619
2320 if (ANHE_at (he) <= minat) 2620 if (ANHE_at (he) <= minat)
… …
2328 2628
2329 heap [k] = he; 2629 heap [k] = he;
2330 ev_active (ANHE_w (he)) = k; 2630 ev_active (ANHE_w (he)) = k;
2331} 2631}
2332 2632
2333#else /* 4HEAP */ 2633#else /* not 4HEAP */
2334 2634
2335#define HEAP0 1 2635#define HEAP0 1
2336#define HPARENT(k) ((k) >> 1) 2636#define HPARENT(k) ((k) >> 1)
2337#define UPHEAP_DONE(p,k) (!(p)) 2637#define UPHEAP_DONE(p,k) (!(p))
2338 2638
… …
2410 upheap (heap, i + HEAP0); 2710 upheap (heap, i + HEAP0);
2411} 2711}
2412 2712
2413/*****************************************************************************/ 2713/*****************************************************************************/
2414 2714
2415/* associate signal watchers to a signal signal */ 2715/* associate signal watchers to a signal */
2416typedef struct 2716typedef struct
2417{ 2717{
2418 EV_ATOMIC_T pending; 2718 EV_ATOMIC_T pending;
2419#if EV_MULTIPLICITY 2719#if EV_MULTIPLICITY
2420 EV_P; 2720 EV_P;
… …
2426 2726
2427/*****************************************************************************/ 2727/*****************************************************************************/
2428 2728
2429#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2729#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2430 2730
2431noinline ecb_cold 2731ecb_noinline ecb_cold
2432static void 2732static void
2433evpipe_init (EV_P) 2733evpipe_init (EV_P)
2434{ 2734{
2435 if (!ev_is_active (&pipe_w)) 2735 if (!ev_is_active (&pipe_w))
2436 { 2736 {
… …
2477inline_speed void 2777inline_speed void
2478evpipe_write (EV_P_ EV_ATOMIC_T *flag) 2778evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2479{ 2779{
2480 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */ 2780 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2481 2781
2482 if (expect_true (*flag)) 2782 if (ecb_expect_true (*flag))
2483 return; 2783 return;
2484 2784
2485 *flag = 1; 2785 *flag = 1;
2486 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */ 2786 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2487 2787
… …
2564 sig_pending = 0; 2864 sig_pending = 0;
2565 2865
2566 ECB_MEMORY_FENCE; 2866 ECB_MEMORY_FENCE;
2567 2867
2568 for (i = EV_NSIG - 1; i--; ) 2868 for (i = EV_NSIG - 1; i--; )
2569 if (expect_false (signals [i].pending)) 2869 if (ecb_expect_false (signals [i].pending))
2570 ev_feed_signal_event (EV_A_ i + 1); 2870 ev_feed_signal_event (EV_A_ i + 1);
2571 } 2871 }
2572#endif 2872#endif
2573 2873
2574#if EV_ASYNC_ENABLE 2874#if EV_ASYNC_ENABLE
… …
2615#endif 2915#endif
2616 2916
2617 ev_feed_signal (signum); 2917 ev_feed_signal (signum);
2618} 2918}
2619 2919
2620noinline 2920ecb_noinline
2621void 2921void
2622ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT 2922ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
2623{ 2923{
2624 WL w; 2924 WL w;
2625 2925
2626 if (expect_false (signum <= 0 || signum >= EV_NSIG)) 2926 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
2627 return; 2927 return;
2628 2928
2629 --signum; 2929 --signum;
2630 2930
2631#if EV_MULTIPLICITY 2931#if EV_MULTIPLICITY
2632 /* it is permissible to try to feed a signal to the wrong loop */ 2932 /* it is permissible to try to feed a signal to the wrong loop */
2633 /* or, likely more useful, feeding a signal nobody is waiting for */ 2933 /* or, likely more useful, feeding a signal nobody is waiting for */
2634 2934
2635 if (expect_false (signals [signum].loop != EV_A)) 2935 if (ecb_expect_false (signals [signum].loop != EV_A))
2636 return; 2936 return;
2637#endif 2937#endif
2638 2938
2639 signals [signum].pending = 0; 2939 signals [signum].pending = 0;
2640 ECB_MEMORY_FENCE_RELEASE; 2940 ECB_MEMORY_FENCE_RELEASE;
… …
2724 3024
2725#endif 3025#endif
2726 3026
2727/*****************************************************************************/ 3027/*****************************************************************************/
2728 3028
3029#if EV_USE_TIMERFD
3030
3031static void periodics_reschedule (EV_P);
3032
3033static void
3034timerfdcb (EV_P_ ev_io *iow, int revents)
3035{
3036 struct itimerspec its = { 0 };
3037
3038 its.it_value.tv_sec = ev_rt_now + (int)MAX_BLOCKTIME2;
3039 timerfd_settime (timerfd, TFD_TIMER_ABSTIME | TFD_TIMER_CANCEL_ON_SET, &its, 0);
3040
3041 ev_rt_now = ev_time ();
3042 /* periodics_reschedule only needs ev_rt_now */
3043 /* but maybe in the future we want the full treatment. */
3044 /*
3045 now_floor = EV_TS_CONST (0.);
3046 time_update (EV_A_ EV_TSTAMP_HUGE);
3047 */
3048 periodics_reschedule (EV_A);
3049}
3050
3051ecb_noinline ecb_cold
3052static void
3053evtimerfd_init (EV_P)
3054{
3055 if (!ev_is_active (&timerfd_w))
3056 {
3057 timerfd = timerfd_create (CLOCK_REALTIME, TFD_NONBLOCK | TFD_CLOEXEC);
3058
3059 if (timerfd >= 0)
3060 {
3061 fd_intern (timerfd); /* just to be sure */
3062
3063 ev_io_init (&timerfd_w, timerfdcb, timerfd, EV_READ);
3064 ev_set_priority (&timerfd_w, EV_MINPRI);
3065 ev_io_start (EV_A_ &timerfd_w);
3066 ev_unref (EV_A); /* watcher should not keep loop alive */
3067
3068 /* (re-) arm timer */
3069 timerfdcb (EV_A_ 0, 0);
3070 }
3071 }
3072}
3073
3074#endif
3075
3076/*****************************************************************************/
3077
2729#if EV_USE_IOCP 3078#if EV_USE_IOCP
2730# include "ev_iocp.c" 3079# include "ev_iocp.c"
2731#endif 3080#endif
2732#if EV_USE_PORT 3081#if EV_USE_PORT
2733# include "ev_port.c" 3082# include "ev_port.c"
… …
2738#if EV_USE_EPOLL 3087#if EV_USE_EPOLL
2739# include "ev_epoll.c" 3088# include "ev_epoll.c"
2740#endif 3089#endif
2741#if EV_USE_LINUXAIO 3090#if EV_USE_LINUXAIO
2742# include "ev_linuxaio.c" 3091# include "ev_linuxaio.c"
3092#endif
3093#if EV_USE_IOURING
3094# include "ev_iouring.c"
2743#endif 3095#endif
2744#if EV_USE_POLL 3096#if EV_USE_POLL
2745# include "ev_poll.c" 3097# include "ev_poll.c"
2746#endif 3098#endif
2747#if EV_USE_SELECT 3099#if EV_USE_SELECT
… …
2776unsigned int 3128unsigned int
2777ev_supported_backends (void) EV_NOEXCEPT 3129ev_supported_backends (void) EV_NOEXCEPT
2778{ 3130{
2779 unsigned int flags = 0; 3131 unsigned int flags = 0;
2780 3132
2781 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 3133 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2782 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE; 3134 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
2783 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 3135 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2784 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO; 3136 if (EV_USE_LINUXAIO ) flags |= EVBACKEND_LINUXAIO;
2785 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 3137 if (EV_USE_IOURING && ev_linux_version () >= 0x050601) flags |= EVBACKEND_IOURING; /* 5.6.1+ */
2786 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT; 3138 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
2787 3139 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
3140
2788 return flags; 3141 return flags;
2789} 3142}
2790 3143
2791ecb_cold 3144ecb_cold
2792unsigned int 3145unsigned int
… …
2807#ifdef __FreeBSD__ 3160#ifdef __FreeBSD__
2808 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ 3161 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2809#endif 3162#endif
2810 3163
2811 /* TODO: linuxaio is very experimental */ 3164 /* TODO: linuxaio is very experimental */
3165#if !EV_RECOMMEND_LINUXAIO
2812 flags &= ~EVBACKEND_LINUXAIO; 3166 flags &= ~EVBACKEND_LINUXAIO;
3167#endif
3168 /* TODO: linuxaio is super experimental */
3169#if !EV_RECOMMEND_IOURING
3170 flags &= ~EVBACKEND_IOURING;
3171#endif
2813 3172
2814 return flags; 3173 return flags;
2815} 3174}
2816 3175
2817ecb_cold 3176ecb_cold
2818unsigned int 3177unsigned int
2819ev_embeddable_backends (void) EV_NOEXCEPT 3178ev_embeddable_backends (void) EV_NOEXCEPT
2820{ 3179{
2821 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 3180 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT | EVBACKEND_IOURING;
2822 3181
2823 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 3182 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2824 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 3183 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2825 flags &= ~EVBACKEND_EPOLL; 3184 flags &= ~EVBACKEND_EPOLL;
2826 3185
3186 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
3187
2827 return flags; 3188 return flags;
2828} 3189}
2829 3190
2830unsigned int 3191unsigned int
2831ev_backend (EV_P) EV_NOEXCEPT 3192ev_backend (EV_P) EV_NOEXCEPT
… …
2883 acquire_cb = acquire; 3244 acquire_cb = acquire;
2884} 3245}
2885#endif 3246#endif
2886 3247
2887/* initialise a loop structure, must be zero-initialised */ 3248/* initialise a loop structure, must be zero-initialised */
2888noinline ecb_cold 3249ecb_noinline ecb_cold
2889static void 3250static void
2890loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT 3251loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
2891{ 3252{
2892 if (!backend) 3253 if (!backend)
2893 { 3254 {
… …
2948 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3309 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2949#endif 3310#endif
2950#if EV_USE_SIGNALFD 3311#if EV_USE_SIGNALFD
2951 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 3312 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2952#endif 3313#endif
3314#if EV_USE_TIMERFD
3315 timerfd = flags & EVFLAG_NOTIMERFD ? -1 : -2;
3316#endif
2953 3317
2954 if (!(flags & EVBACKEND_MASK)) 3318 if (!(flags & EVBACKEND_MASK))
2955 flags |= ev_recommended_backends (); 3319 flags |= ev_recommended_backends ();
2956 3320
2957#if EV_USE_IOCP 3321#if EV_USE_IOCP
… …
2960#if EV_USE_PORT 3324#if EV_USE_PORT
2961 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3325 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
2962#endif 3326#endif
2963#if EV_USE_KQUEUE 3327#if EV_USE_KQUEUE
2964 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags); 3328 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
3329#endif
3330#if EV_USE_IOURING
3331 if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
2965#endif 3332#endif
2966#if EV_USE_LINUXAIO 3333#if EV_USE_LINUXAIO
2967 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags); 3334 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
2968#endif 3335#endif
2969#if EV_USE_EPOLL 3336#if EV_USE_EPOLL
… …
2998 return; 3365 return;
2999#endif 3366#endif
3000 3367
3001#if EV_CLEANUP_ENABLE 3368#if EV_CLEANUP_ENABLE
3002 /* queue cleanup watchers (and execute them) */ 3369 /* queue cleanup watchers (and execute them) */
3003 if (expect_false (cleanupcnt)) 3370 if (ecb_expect_false (cleanupcnt))
3004 { 3371 {
3005 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); 3372 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
3006 EV_INVOKE_PENDING; 3373 EV_INVOKE_PENDING;
3007 } 3374 }
3008#endif 3375#endif
… …
3027#if EV_USE_SIGNALFD 3394#if EV_USE_SIGNALFD
3028 if (ev_is_active (&sigfd_w)) 3395 if (ev_is_active (&sigfd_w))
3029 close (sigfd); 3396 close (sigfd);
3030#endif 3397#endif
3031 3398
3399#if EV_USE_TIMERFD
3400 if (ev_is_active (&timerfd_w))
3401 close (timerfd);
3402#endif
3403
3032#if EV_USE_INOTIFY 3404#if EV_USE_INOTIFY
3033 if (fs_fd >= 0) 3405 if (fs_fd >= 0)
3034 close (fs_fd); 3406 close (fs_fd);
3035#endif 3407#endif
3036 3408
… …
3043#if EV_USE_PORT 3415#if EV_USE_PORT
3044 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3416 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
3045#endif 3417#endif
3046#if EV_USE_KQUEUE 3418#if EV_USE_KQUEUE
3047 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A); 3419 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3420#endif
3421#if EV_USE_IOURING
3422 if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
3048#endif 3423#endif
3049#if EV_USE_LINUXAIO 3424#if EV_USE_LINUXAIO
3050 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A); 3425 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
3051#endif 3426#endif
3052#if EV_USE_EPOLL 3427#if EV_USE_EPOLL
… …
3111 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3486 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
3112#endif 3487#endif
3113#if EV_USE_KQUEUE 3488#if EV_USE_KQUEUE
3114 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A); 3489 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3115#endif 3490#endif
3491#if EV_USE_IOURING
3492 if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
3493#endif
3116#if EV_USE_LINUXAIO 3494#if EV_USE_LINUXAIO
3117 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A); 3495 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
3118#endif 3496#endif
3119#if EV_USE_EPOLL 3497#if EV_USE_EPOLL
3120 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3498 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
3121#endif 3499#endif
3122#if EV_USE_INOTIFY 3500#if EV_USE_INOTIFY
3123 infy_fork (EV_A); 3501 infy_fork (EV_A);
3124#endif 3502#endif
3125 3503
3504 if (postfork != 2)
3505 {
3506 #if EV_USE_SIGNALFD
3507 /* surprisingly, nothing needs to be done for signalfd, accoridng to docs, it does the right thing on fork */
3508 #endif
3509
3510 #if EV_USE_TIMERFD
3511 if (ev_is_active (&timerfd_w))
3512 {
3513 ev_ref (EV_A);
3514 ev_io_stop (EV_A_ &timerfd_w);
3515
3516 close (timerfd);
3517 timerfd = -2;
3518
3519 evtimerfd_init (EV_A);
3520 /* reschedule periodics, in case we missed something */
3521 ev_feed_event (EV_A_ &timerfd_w, EV_CUSTOM);
3522 }
3523 #endif
3524
3126#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3525 #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
3127 if (ev_is_active (&pipe_w) && postfork != 2) 3526 if (ev_is_active (&pipe_w))
3128 { 3527 {
3129 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 3528 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
3130 3529
3131 ev_ref (EV_A); 3530 ev_ref (EV_A);
3132 ev_io_stop (EV_A_ &pipe_w); 3531 ev_io_stop (EV_A_ &pipe_w);
3133 3532
3134 if (evpipe [0] >= 0) 3533 if (evpipe [0] >= 0)
3135 EV_WIN32_CLOSE_FD (evpipe [0]); 3534 EV_WIN32_CLOSE_FD (evpipe [0]);
3136 3535
3137 evpipe_init (EV_A); 3536 evpipe_init (EV_A);
3138 /* iterate over everything, in case we missed something before */ 3537 /* iterate over everything, in case we missed something before */
3139 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3538 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3539 }
3540 #endif
3140 } 3541 }
3141#endif
3142 3542
3143 postfork = 0; 3543 postfork = 0;
3144} 3544}
3145 3545
3146#if EV_MULTIPLICITY 3546#if EV_MULTIPLICITY
… …
3162} 3562}
3163 3563
3164#endif /* multiplicity */ 3564#endif /* multiplicity */
3165 3565
3166#if EV_VERIFY 3566#if EV_VERIFY
3167noinline ecb_cold 3567ecb_noinline ecb_cold
3168static void 3568static void
3169verify_watcher (EV_P_ W w) 3569verify_watcher (EV_P_ W w)
3170{ 3570{
3171 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3571 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
3172 3572
3173 if (w->pending) 3573 if (w->pending)
3174 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3574 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
3175} 3575}
3176 3576
3177noinline ecb_cold 3577ecb_noinline ecb_cold
3178static void 3578static void
3179verify_heap (EV_P_ ANHE *heap, int N) 3579verify_heap (EV_P_ ANHE *heap, int N)
3180{ 3580{
3181 int i; 3581 int i;
3182 3582
… …
3188 3588
3189 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3589 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
3190 } 3590 }
3191} 3591}
3192 3592
3193noinline ecb_cold 3593ecb_noinline ecb_cold
3194static void 3594static void
3195array_verify (EV_P_ W *ws, int cnt) 3595array_verify (EV_P_ W *ws, int cnt)
3196{ 3596{
3197 while (cnt--) 3597 while (cnt--)
3198 { 3598 {
… …
3347 count += pendingcnt [pri]; 3747 count += pendingcnt [pri];
3348 3748
3349 return count; 3749 return count;
3350} 3750}
3351 3751
3352noinline 3752ecb_noinline
3353void 3753void
3354ev_invoke_pending (EV_P) 3754ev_invoke_pending (EV_P)
3355{ 3755{
3356 pendingpri = NUMPRI; 3756 pendingpri = NUMPRI;
3357 3757
… …
3376/* make idle watchers pending. this handles the "call-idle */ 3776/* make idle watchers pending. this handles the "call-idle */
3377/* only when higher priorities are idle" logic */ 3777/* only when higher priorities are idle" logic */
3378inline_size void 3778inline_size void
3379idle_reify (EV_P) 3779idle_reify (EV_P)
3380{ 3780{
3381 if (expect_false (idleall)) 3781 if (ecb_expect_false (idleall))
3382 { 3782 {
3383 int pri; 3783 int pri;
3384 3784
3385 for (pri = NUMPRI; pri--; ) 3785 for (pri = NUMPRI; pri--; )
3386 { 3786 {
… …
3416 { 3816 {
3417 ev_at (w) += w->repeat; 3817 ev_at (w) += w->repeat;
3418 if (ev_at (w) < mn_now) 3818 if (ev_at (w) < mn_now)
3419 ev_at (w) = mn_now; 3819 ev_at (w) = mn_now;
3420 3820
3421 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 3821 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > EV_TS_CONST (0.)));
3422 3822
3423 ANHE_at_cache (timers [HEAP0]); 3823 ANHE_at_cache (timers [HEAP0]);
3424 downheap (timers, timercnt, HEAP0); 3824 downheap (timers, timercnt, HEAP0);
3425 } 3825 }
3426 else 3826 else
… …
3435 } 3835 }
3436} 3836}
3437 3837
3438#if EV_PERIODIC_ENABLE 3838#if EV_PERIODIC_ENABLE
3439 3839
3440noinline 3840ecb_noinline
3441static void 3841static void
3442periodic_recalc (EV_P_ ev_periodic *w) 3842periodic_recalc (EV_P_ ev_periodic *w)
3443{ 3843{
3444 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3844 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3445 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); 3845 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
… …
3448 while (at <= ev_rt_now) 3848 while (at <= ev_rt_now)
3449 { 3849 {
3450 ev_tstamp nat = at + w->interval; 3850 ev_tstamp nat = at + w->interval;
3451 3851
3452 /* when resolution fails us, we use ev_rt_now */ 3852 /* when resolution fails us, we use ev_rt_now */
3453 if (expect_false (nat == at)) 3853 if (ecb_expect_false (nat == at))
3454 { 3854 {
3455 at = ev_rt_now; 3855 at = ev_rt_now;
3456 break; 3856 break;
3457 } 3857 }
3458 3858
… …
3504 } 3904 }
3505} 3905}
3506 3906
3507/* simply recalculate all periodics */ 3907/* simply recalculate all periodics */
3508/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3908/* TODO: maybe ensure that at least one event happens when jumping forward? */
3509noinline ecb_cold 3909ecb_noinline ecb_cold
3510static void 3910static void
3511periodics_reschedule (EV_P) 3911periodics_reschedule (EV_P)
3512{ 3912{
3513 int i; 3913 int i;
3514 3914
… …
3528 reheap (periodics, periodiccnt); 3928 reheap (periodics, periodiccnt);
3529} 3929}
3530#endif 3930#endif
3531 3931
3532/* adjust all timers by a given offset */ 3932/* adjust all timers by a given offset */
3533noinline ecb_cold 3933ecb_noinline ecb_cold
3534static void 3934static void
3535timers_reschedule (EV_P_ ev_tstamp adjust) 3935timers_reschedule (EV_P_ ev_tstamp adjust)
3536{ 3936{
3537 int i; 3937 int i;
3538 3938
… …
3548/* also detect if there was a timejump, and act accordingly */ 3948/* also detect if there was a timejump, and act accordingly */
3549inline_speed void 3949inline_speed void
3550time_update (EV_P_ ev_tstamp max_block) 3950time_update (EV_P_ ev_tstamp max_block)
3551{ 3951{
3552#if EV_USE_MONOTONIC 3952#if EV_USE_MONOTONIC
3553 if (expect_true (have_monotonic)) 3953 if (ecb_expect_true (have_monotonic))
3554 { 3954 {
3555 int i; 3955 int i;
3556 ev_tstamp odiff = rtmn_diff; 3956 ev_tstamp odiff = rtmn_diff;
3557 3957
3558 mn_now = get_clock (); 3958 mn_now = get_clock ();
3559 3959
3560 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3960 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
3561 /* interpolate in the meantime */ 3961 /* interpolate in the meantime */
3562 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3962 if (ecb_expect_true (mn_now - now_floor < EV_TS_CONST (MIN_TIMEJUMP * .5)))
3563 { 3963 {
3564 ev_rt_now = rtmn_diff + mn_now; 3964 ev_rt_now = rtmn_diff + mn_now;
3565 return; 3965 return;
3566 } 3966 }
3567 3967
… …
3581 ev_tstamp diff; 3981 ev_tstamp diff;
3582 rtmn_diff = ev_rt_now - mn_now; 3982 rtmn_diff = ev_rt_now - mn_now;
3583 3983
3584 diff = odiff - rtmn_diff; 3984 diff = odiff - rtmn_diff;
3585 3985
3586 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP)) 3986 if (ecb_expect_true ((diff < EV_TS_CONST (0.) ? -diff : diff) < EV_TS_CONST (MIN_TIMEJUMP)))
3587 return; /* all is well */ 3987 return; /* all is well */
3588 3988
3589 ev_rt_now = ev_time (); 3989 ev_rt_now = ev_time ();
3590 mn_now = get_clock (); 3990 mn_now = get_clock ();
3591 now_floor = mn_now; 3991 now_floor = mn_now;
… …
3600 else 4000 else
3601#endif 4001#endif
3602 { 4002 {
3603 ev_rt_now = ev_time (); 4003 ev_rt_now = ev_time ();
3604 4004
3605 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 4005 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + EV_TS_CONST (MIN_TIMEJUMP)))
3606 { 4006 {
3607 /* adjust timers. this is easy, as the offset is the same for all of them */ 4007 /* adjust timers. this is easy, as the offset is the same for all of them */
3608 timers_reschedule (EV_A_ ev_rt_now - mn_now); 4008 timers_reschedule (EV_A_ ev_rt_now - mn_now);
3609#if EV_PERIODIC_ENABLE 4009#if EV_PERIODIC_ENABLE
3610 periodics_reschedule (EV_A); 4010 periodics_reschedule (EV_A);
… …
3633#if EV_VERIFY >= 2 4033#if EV_VERIFY >= 2
3634 ev_verify (EV_A); 4034 ev_verify (EV_A);
3635#endif 4035#endif
3636 4036
3637#ifndef _WIN32 4037#ifndef _WIN32
3638 if (expect_false (curpid)) /* penalise the forking check even more */ 4038 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
3639 if (expect_false (getpid () != curpid)) 4039 if (ecb_expect_false (getpid () != curpid))
3640 { 4040 {
3641 curpid = getpid (); 4041 curpid = getpid ();
3642 postfork = 1; 4042 postfork = 1;
3643 } 4043 }
3644#endif 4044#endif
3645 4045
3646#if EV_FORK_ENABLE 4046#if EV_FORK_ENABLE
3647 /* we might have forked, so queue fork handlers */ 4047 /* we might have forked, so queue fork handlers */
3648 if (expect_false (postfork)) 4048 if (ecb_expect_false (postfork))
3649 if (forkcnt) 4049 if (forkcnt)
3650 { 4050 {
3651 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 4051 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
3652 EV_INVOKE_PENDING; 4052 EV_INVOKE_PENDING;
3653 } 4053 }
3654#endif 4054#endif
3655 4055
3656#if EV_PREPARE_ENABLE 4056#if EV_PREPARE_ENABLE
3657 /* queue prepare watchers (and execute them) */ 4057 /* queue prepare watchers (and execute them) */
3658 if (expect_false (preparecnt)) 4058 if (ecb_expect_false (preparecnt))
3659 { 4059 {
3660 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 4060 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
3661 EV_INVOKE_PENDING; 4061 EV_INVOKE_PENDING;
3662 } 4062 }
3663#endif 4063#endif
3664 4064
3665 if (expect_false (loop_done)) 4065 if (ecb_expect_false (loop_done))
3666 break; 4066 break;
3667 4067
3668 /* we might have forked, so reify kernel state if necessary */ 4068 /* we might have forked, so reify kernel state if necessary */
3669 if (expect_false (postfork)) 4069 if (ecb_expect_false (postfork))
3670 loop_fork (EV_A); 4070 loop_fork (EV_A);
3671 4071
3672 /* update fd-related kernel structures */ 4072 /* update fd-related kernel structures */
3673 fd_reify (EV_A); 4073 fd_reify (EV_A);
3674 4074
… …
3679 4079
3680 /* remember old timestamp for io_blocktime calculation */ 4080 /* remember old timestamp for io_blocktime calculation */
3681 ev_tstamp prev_mn_now = mn_now; 4081 ev_tstamp prev_mn_now = mn_now;
3682 4082
3683 /* update time to cancel out callback processing overhead */ 4083 /* update time to cancel out callback processing overhead */
3684 time_update (EV_A_ 1e100); 4084 time_update (EV_A_ EV_TS_CONST (EV_TSTAMP_HUGE));
3685 4085
3686 /* from now on, we want a pipe-wake-up */ 4086 /* from now on, we want a pipe-wake-up */
3687 pipe_write_wanted = 1; 4087 pipe_write_wanted = 1;
3688 4088
3689 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */ 4089 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3690 4090
3691 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) 4091 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
3692 { 4092 {
3693 waittime = MAX_BLOCKTIME; 4093 waittime = EV_TS_CONST (MAX_BLOCKTIME);
4094
4095#if EV_USE_TIMERFD
4096 /* sleep a lot longer when we can reliably detect timejumps */
4097 if (ecb_expect_true (timerfd >= 0))
4098 waittime = EV_TS_CONST (MAX_BLOCKTIME2);
4099#endif
3694 4100
3695 if (timercnt) 4101 if (timercnt)
3696 { 4102 {
3697 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now; 4103 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
3698 if (waittime > to) waittime = to; 4104 if (waittime > to) waittime = to;
… …
3705 if (waittime > to) waittime = to; 4111 if (waittime > to) waittime = to;
3706 } 4112 }
3707#endif 4113#endif
3708 4114
3709 /* don't let timeouts decrease the waittime below timeout_blocktime */ 4115 /* don't let timeouts decrease the waittime below timeout_blocktime */
3710 if (expect_false (waittime < timeout_blocktime)) 4116 if (ecb_expect_false (waittime < timeout_blocktime))
3711 waittime = timeout_blocktime; 4117 waittime = timeout_blocktime;
3712 4118
3713 /* at this point, we NEED to wait, so we have to ensure */ 4119 /* now there are two more special cases left, either we have
3714 /* to pass a minimum nonzero value to the backend */ 4120 * already-expired timers, so we should not sleep, or we have timers
4121 * that expire very soon, in which case we need to wait for a minimum
4122 * amount of time for some event loop backends.
4123 */
3715 if (expect_false (waittime < backend_mintime)) 4124 if (ecb_expect_false (waittime < backend_mintime))
4125 waittime = waittime <= EV_TS_CONST (0.)
4126 ? EV_TS_CONST (0.)
3716 waittime = backend_mintime; 4127 : backend_mintime;
3717 4128
3718 /* extra check because io_blocktime is commonly 0 */ 4129 /* extra check because io_blocktime is commonly 0 */
3719 if (expect_false (io_blocktime)) 4130 if (ecb_expect_false (io_blocktime))
3720 { 4131 {
3721 sleeptime = io_blocktime - (mn_now - prev_mn_now); 4132 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3722 4133
3723 if (sleeptime > waittime - backend_mintime) 4134 if (sleeptime > waittime - backend_mintime)
3724 sleeptime = waittime - backend_mintime; 4135 sleeptime = waittime - backend_mintime;
3725 4136
3726 if (expect_true (sleeptime > 0.)) 4137 if (ecb_expect_true (sleeptime > EV_TS_CONST (0.)))
3727 { 4138 {
3728 ev_sleep (sleeptime); 4139 ev_sleep (sleeptime);
3729 waittime -= sleeptime; 4140 waittime -= sleeptime;
3730 } 4141 }
3731 } 4142 }
… …
3745 { 4156 {
3746 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 4157 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3747 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 4158 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3748 } 4159 }
3749 4160
3750
3751 /* update ev_rt_now, do magic */ 4161 /* update ev_rt_now, do magic */
3752 time_update (EV_A_ waittime + sleeptime); 4162 time_update (EV_A_ waittime + sleeptime);
3753 } 4163 }
3754 4164
3755 /* queue pending timers and reschedule them */ 4165 /* queue pending timers and reschedule them */
… …
3763 idle_reify (EV_A); 4173 idle_reify (EV_A);
3764#endif 4174#endif
3765 4175
3766#if EV_CHECK_ENABLE 4176#if EV_CHECK_ENABLE
3767 /* queue check watchers, to be executed first */ 4177 /* queue check watchers, to be executed first */
3768 if (expect_false (checkcnt)) 4178 if (ecb_expect_false (checkcnt))
3769 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 4179 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3770#endif 4180#endif
3771 4181
3772 EV_INVOKE_PENDING; 4182 EV_INVOKE_PENDING;
3773 } 4183 }
3774 while (expect_true ( 4184 while (ecb_expect_true (
3775 activecnt 4185 activecnt
3776 && !loop_done 4186 && !loop_done
3777 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) 4187 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
3778 )); 4188 ));
3779 4189
… …
3806} 4216}
3807 4217
3808void 4218void
3809ev_now_update (EV_P) EV_NOEXCEPT 4219ev_now_update (EV_P) EV_NOEXCEPT
3810{ 4220{
3811 time_update (EV_A_ 1e100); 4221 time_update (EV_A_ EV_TSTAMP_HUGE);
3812} 4222}
3813 4223
3814void 4224void
3815ev_suspend (EV_P) EV_NOEXCEPT 4225ev_suspend (EV_P) EV_NOEXCEPT
3816{ 4226{
… …
3843inline_size void 4253inline_size void
3844wlist_del (WL *head, WL elem) 4254wlist_del (WL *head, WL elem)
3845{ 4255{
3846 while (*head) 4256 while (*head)
3847 { 4257 {
3848 if (expect_true (*head == elem)) 4258 if (ecb_expect_true (*head == elem))
3849 { 4259 {
3850 *head = elem->next; 4260 *head = elem->next;
3851 break; 4261 break;
3852 } 4262 }
3853 4263
… …
3870ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT 4280ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
3871{ 4281{
3872 W w_ = (W)w; 4282 W w_ = (W)w;
3873 int pending = w_->pending; 4283 int pending = w_->pending;
3874 4284
3875 if (expect_true (pending)) 4285 if (ecb_expect_true (pending))
3876 { 4286 {
3877 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4287 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3878 p->w = (W)&pending_w; 4288 p->w = (W)&pending_w;
3879 w_->pending = 0; 4289 w_->pending = 0;
3880 return p->events; 4290 return p->events;
… …
3907 w->active = 0; 4317 w->active = 0;
3908} 4318}
3909 4319
3910/*****************************************************************************/ 4320/*****************************************************************************/
3911 4321
3912noinline 4322ecb_noinline
3913void 4323void
3914ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT 4324ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
3915{ 4325{
3916 int fd = w->fd; 4326 int fd = w->fd;
3917 4327
3918 if (expect_false (ev_is_active (w))) 4328 if (ecb_expect_false (ev_is_active (w)))
3919 return; 4329 return;
3920 4330
3921 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4331 assert (("libev: ev_io_start called with negative fd", fd >= 0));
3922 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 4332 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
3923 4333
4334#if EV_VERIFY >= 2
4335 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4336#endif
3924 EV_FREQUENT_CHECK; 4337 EV_FREQUENT_CHECK;
3925 4338
3926 ev_start (EV_A_ (W)w, 1); 4339 ev_start (EV_A_ (W)w, 1);
3927 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill); 4340 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
3928 wlist_add (&anfds[fd].head, (WL)w); 4341 wlist_add (&anfds[fd].head, (WL)w);
… …
3934 w->events &= ~EV__IOFDSET; 4347 w->events &= ~EV__IOFDSET;
3935 4348
3936 EV_FREQUENT_CHECK; 4349 EV_FREQUENT_CHECK;
3937} 4350}
3938 4351
3939noinline 4352ecb_noinline
3940void 4353void
3941ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT 4354ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
3942{ 4355{
3943 clear_pending (EV_A_ (W)w); 4356 clear_pending (EV_A_ (W)w);
3944 if (expect_false (!ev_is_active (w))) 4357 if (ecb_expect_false (!ev_is_active (w)))
3945 return; 4358 return;
3946 4359
3947 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4360 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
3948 4361
4362#if EV_VERIFY >= 2
4363 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4364#endif
3949 EV_FREQUENT_CHECK; 4365 EV_FREQUENT_CHECK;
3950 4366
3951 wlist_del (&anfds[w->fd].head, (WL)w); 4367 wlist_del (&anfds[w->fd].head, (WL)w);
3952 ev_stop (EV_A_ (W)w); 4368 ev_stop (EV_A_ (W)w);
3953 4369
3954 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 4370 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3955 4371
3956 EV_FREQUENT_CHECK; 4372 EV_FREQUENT_CHECK;
3957} 4373}
3958 4374
3959noinline 4375ecb_noinline
3960void 4376void
3961ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT 4377ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
3962{ 4378{
3963 if (expect_false (ev_is_active (w))) 4379 if (ecb_expect_false (ev_is_active (w)))
3964 return; 4380 return;
3965 4381
3966 ev_at (w) += mn_now; 4382 ev_at (w) += mn_now;
3967 4383
3968 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4384 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
… …
3979 EV_FREQUENT_CHECK; 4395 EV_FREQUENT_CHECK;
3980 4396
3981 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4397 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
3982} 4398}
3983 4399
3984noinline 4400ecb_noinline
3985void 4401void
3986ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT 4402ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
3987{ 4403{
3988 clear_pending (EV_A_ (W)w); 4404 clear_pending (EV_A_ (W)w);
3989 if (expect_false (!ev_is_active (w))) 4405 if (ecb_expect_false (!ev_is_active (w)))
3990 return; 4406 return;
3991 4407
3992 EV_FREQUENT_CHECK; 4408 EV_FREQUENT_CHECK;
3993 4409
3994 { 4410 {
… …
3996 4412
3997 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4413 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
3998 4414
3999 --timercnt; 4415 --timercnt;
4000 4416
4001 if (expect_true (active < timercnt + HEAP0)) 4417 if (ecb_expect_true (active < timercnt + HEAP0))
4002 { 4418 {
4003 timers [active] = timers [timercnt + HEAP0]; 4419 timers [active] = timers [timercnt + HEAP0];
4004 adjustheap (timers, timercnt, active); 4420 adjustheap (timers, timercnt, active);
4005 } 4421 }
4006 } 4422 }
… …
4010 ev_stop (EV_A_ (W)w); 4426 ev_stop (EV_A_ (W)w);
4011 4427
4012 EV_FREQUENT_CHECK; 4428 EV_FREQUENT_CHECK;
4013} 4429}
4014 4430
4015noinline 4431ecb_noinline
4016void 4432void
4017ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT 4433ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
4018{ 4434{
4019 EV_FREQUENT_CHECK; 4435 EV_FREQUENT_CHECK;
4020 4436
… …
4041} 4457}
4042 4458
4043ev_tstamp 4459ev_tstamp
4044ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT 4460ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
4045{ 4461{
4046 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4462 return ev_at (w) - (ev_is_active (w) ? mn_now : EV_TS_CONST (0.));
4047} 4463}
4048 4464
4049#if EV_PERIODIC_ENABLE 4465#if EV_PERIODIC_ENABLE
4050noinline 4466ecb_noinline
4051void 4467void
4052ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT 4468ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
4053{ 4469{
4054 if (expect_false (ev_is_active (w))) 4470 if (ecb_expect_false (ev_is_active (w)))
4055 return; 4471 return;
4472
4473#if EV_USE_TIMERFD
4474 if (timerfd == -2)
4475 evtimerfd_init (EV_A);
4476#endif
4056 4477
4057 if (w->reschedule_cb) 4478 if (w->reschedule_cb)
4058 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4479 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
4059 else if (w->interval) 4480 else if (w->interval)
4060 { 4481 {
… …
4076 EV_FREQUENT_CHECK; 4497 EV_FREQUENT_CHECK;
4077 4498
4078 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4499 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
4079} 4500}
4080 4501
4081noinline 4502ecb_noinline
4082void 4503void
4083ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT 4504ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
4084{ 4505{
4085 clear_pending (EV_A_ (W)w); 4506 clear_pending (EV_A_ (W)w);
4086 if (expect_false (!ev_is_active (w))) 4507 if (ecb_expect_false (!ev_is_active (w)))
4087 return; 4508 return;
4088 4509
4089 EV_FREQUENT_CHECK; 4510 EV_FREQUENT_CHECK;
4090 4511
4091 { 4512 {
… …
4093 4514
4094 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4515 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
4095 4516
4096 --periodiccnt; 4517 --periodiccnt;
4097 4518
4098 if (expect_true (active < periodiccnt + HEAP0)) 4519 if (ecb_expect_true (active < periodiccnt + HEAP0))
4099 { 4520 {
4100 periodics [active] = periodics [periodiccnt + HEAP0]; 4521 periodics [active] = periodics [periodiccnt + HEAP0];
4101 adjustheap (periodics, periodiccnt, active); 4522 adjustheap (periodics, periodiccnt, active);
4102 } 4523 }
4103 } 4524 }
… …
4105 ev_stop (EV_A_ (W)w); 4526 ev_stop (EV_A_ (W)w);
4106 4527
4107 EV_FREQUENT_CHECK; 4528 EV_FREQUENT_CHECK;
4108} 4529}
4109 4530
4110noinline 4531ecb_noinline
4111void 4532void
4112ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT 4533ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
4113{ 4534{
4114 /* TODO: use adjustheap and recalculation */ 4535 /* TODO: use adjustheap and recalculation */
4115 ev_periodic_stop (EV_A_ w); 4536 ev_periodic_stop (EV_A_ w);
… …
4121# define SA_RESTART 0 4542# define SA_RESTART 0
4122#endif 4543#endif
4123 4544
4124#if EV_SIGNAL_ENABLE 4545#if EV_SIGNAL_ENABLE
4125 4546
4126noinline 4547ecb_noinline
4127void 4548void
4128ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT 4549ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
4129{ 4550{
4130 if (expect_false (ev_is_active (w))) 4551 if (ecb_expect_false (ev_is_active (w)))
4131 return; 4552 return;
4132 4553
4133 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4554 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
4134 4555
4135#if EV_MULTIPLICITY 4556#if EV_MULTIPLICITY
… …
4204 } 4625 }
4205 4626
4206 EV_FREQUENT_CHECK; 4627 EV_FREQUENT_CHECK;
4207} 4628}
4208 4629
4209noinline 4630ecb_noinline
4210void 4631void
4211ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT 4632ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
4212{ 4633{
4213 clear_pending (EV_A_ (W)w); 4634 clear_pending (EV_A_ (W)w);
4214 if (expect_false (!ev_is_active (w))) 4635 if (ecb_expect_false (!ev_is_active (w)))
4215 return; 4636 return;
4216 4637
4217 EV_FREQUENT_CHECK; 4638 EV_FREQUENT_CHECK;
4218 4639
4219 wlist_del (&signals [w->signum - 1].head, (WL)w); 4640 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
4252ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT 4673ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
4253{ 4674{
4254#if EV_MULTIPLICITY 4675#if EV_MULTIPLICITY
4255 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4676 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
4256#endif 4677#endif
4257 if (expect_false (ev_is_active (w))) 4678 if (ecb_expect_false (ev_is_active (w)))
4258 return; 4679 return;
4259 4680
4260 EV_FREQUENT_CHECK; 4681 EV_FREQUENT_CHECK;
4261 4682
4262 ev_start (EV_A_ (W)w, 1); 4683 ev_start (EV_A_ (W)w, 1);
… …
4267 4688
4268void 4689void
4269ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT 4690ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
4270{ 4691{
4271 clear_pending (EV_A_ (W)w); 4692 clear_pending (EV_A_ (W)w);
4272 if (expect_false (!ev_is_active (w))) 4693 if (ecb_expect_false (!ev_is_active (w)))
4273 return; 4694 return;
4274 4695
4275 EV_FREQUENT_CHECK; 4696 EV_FREQUENT_CHECK;
4276 4697
4277 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); 4698 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
… …
4291 4712
4292#define DEF_STAT_INTERVAL 5.0074891 4713#define DEF_STAT_INTERVAL 5.0074891
4293#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4714#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
4294#define MIN_STAT_INTERVAL 0.1074891 4715#define MIN_STAT_INTERVAL 0.1074891
4295 4716
4296noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4717ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
4297 4718
4298#if EV_USE_INOTIFY 4719#if EV_USE_INOTIFY
4299 4720
4300/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4721/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
4301# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4722# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
4302 4723
4303noinline 4724ecb_noinline
4304static void 4725static void
4305infy_add (EV_P_ ev_stat *w) 4726infy_add (EV_P_ ev_stat *w)
4306{ 4727{
4307 w->wd = inotify_add_watch (fs_fd, w->path, 4728 w->wd = inotify_add_watch (fs_fd, w->path,
4308 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY 4729 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
… …
4373 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4794 if (ev_is_active (&w->timer)) ev_ref (EV_A);
4374 ev_timer_again (EV_A_ &w->timer); 4795 ev_timer_again (EV_A_ &w->timer);
4375 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4796 if (ev_is_active (&w->timer)) ev_unref (EV_A);
4376} 4797}
4377 4798
4378noinline 4799ecb_noinline
4379static void 4800static void
4380infy_del (EV_P_ ev_stat *w) 4801infy_del (EV_P_ ev_stat *w)
4381{ 4802{
4382 int slot; 4803 int slot;
4383 int wd = w->wd; 4804 int wd = w->wd;
… …
4391 4812
4392 /* remove this watcher, if others are watching it, they will rearm */ 4813 /* remove this watcher, if others are watching it, they will rearm */
4393 inotify_rm_watch (fs_fd, wd); 4814 inotify_rm_watch (fs_fd, wd);
4394} 4815}
4395 4816
4396noinline 4817ecb_noinline
4397static void 4818static void
4398infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4819infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
4399{ 4820{
4400 if (slot < 0) 4821 if (slot < 0)
4401 /* overflow, need to check for all hash slots */ 4822 /* overflow, need to check for all hash slots */
… …
4547 w->attr.st_nlink = 0; 4968 w->attr.st_nlink = 0;
4548 else if (!w->attr.st_nlink) 4969 else if (!w->attr.st_nlink)
4549 w->attr.st_nlink = 1; 4970 w->attr.st_nlink = 1;
4550} 4971}
4551 4972
4552noinline 4973ecb_noinline
4553static void 4974static void
4554stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4975stat_timer_cb (EV_P_ ev_timer *w_, int revents)
4555{ 4976{
4556 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4977 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
4557 4978
… …
4591} 5012}
4592 5013
4593void 5014void
4594ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT 5015ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
4595{ 5016{
4596 if (expect_false (ev_is_active (w))) 5017 if (ecb_expect_false (ev_is_active (w)))
4597 return; 5018 return;
4598 5019
4599 ev_stat_stat (EV_A_ w); 5020 ev_stat_stat (EV_A_ w);
4600 5021
4601 if (w->interval < MIN_STAT_INTERVAL && w->interval) 5022 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
4623 5044
4624void 5045void
4625ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT 5046ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
4626{ 5047{
4627 clear_pending (EV_A_ (W)w); 5048 clear_pending (EV_A_ (W)w);
4628 if (expect_false (!ev_is_active (w))) 5049 if (ecb_expect_false (!ev_is_active (w)))
4629 return; 5050 return;
4630 5051
4631 EV_FREQUENT_CHECK; 5052 EV_FREQUENT_CHECK;
4632 5053
4633#if EV_USE_INOTIFY 5054#if EV_USE_INOTIFY
… …
4648 5069
4649#if EV_IDLE_ENABLE 5070#if EV_IDLE_ENABLE
4650void 5071void
4651ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT 5072ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
4652{ 5073{
4653 if (expect_false (ev_is_active (w))) 5074 if (ecb_expect_false (ev_is_active (w)))
4654 return; 5075 return;
4655 5076
4656 pri_adjust (EV_A_ (W)w); 5077 pri_adjust (EV_A_ (W)w);
4657 5078
4658 EV_FREQUENT_CHECK; 5079 EV_FREQUENT_CHECK;
… …
4672 5093
4673void 5094void
4674ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT 5095ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
4675{ 5096{
4676 clear_pending (EV_A_ (W)w); 5097 clear_pending (EV_A_ (W)w);
4677 if (expect_false (!ev_is_active (w))) 5098 if (ecb_expect_false (!ev_is_active (w)))
4678 return; 5099 return;
4679 5100
4680 EV_FREQUENT_CHECK; 5101 EV_FREQUENT_CHECK;
4681 5102
4682 { 5103 {
… …
4695 5116
4696#if EV_PREPARE_ENABLE 5117#if EV_PREPARE_ENABLE
4697void 5118void
4698ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT 5119ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
4699{ 5120{
4700 if (expect_false (ev_is_active (w))) 5121 if (ecb_expect_false (ev_is_active (w)))
4701 return; 5122 return;
4702 5123
4703 EV_FREQUENT_CHECK; 5124 EV_FREQUENT_CHECK;
4704 5125
4705 ev_start (EV_A_ (W)w, ++preparecnt); 5126 ev_start (EV_A_ (W)w, ++preparecnt);
… …
4711 5132
4712void 5133void
4713ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT 5134ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
4714{ 5135{
4715 clear_pending (EV_A_ (W)w); 5136 clear_pending (EV_A_ (W)w);
4716 if (expect_false (!ev_is_active (w))) 5137 if (ecb_expect_false (!ev_is_active (w)))
4717 return; 5138 return;
4718 5139
4719 EV_FREQUENT_CHECK; 5140 EV_FREQUENT_CHECK;
4720 5141
4721 { 5142 {
… …
4733 5154
4734#if EV_CHECK_ENABLE 5155#if EV_CHECK_ENABLE
4735void 5156void
4736ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT 5157ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
4737{ 5158{
4738 if (expect_false (ev_is_active (w))) 5159 if (ecb_expect_false (ev_is_active (w)))
4739 return; 5160 return;
4740 5161
4741 EV_FREQUENT_CHECK; 5162 EV_FREQUENT_CHECK;
4742 5163
4743 ev_start (EV_A_ (W)w, ++checkcnt); 5164 ev_start (EV_A_ (W)w, ++checkcnt);
… …
4749 5170
4750void 5171void
4751ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT 5172ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
4752{ 5173{
4753 clear_pending (EV_A_ (W)w); 5174 clear_pending (EV_A_ (W)w);
4754 if (expect_false (!ev_is_active (w))) 5175 if (ecb_expect_false (!ev_is_active (w)))
4755 return; 5176 return;
4756 5177
4757 EV_FREQUENT_CHECK; 5178 EV_FREQUENT_CHECK;
4758 5179
4759 { 5180 {
… …
4768 EV_FREQUENT_CHECK; 5189 EV_FREQUENT_CHECK;
4769} 5190}
4770#endif 5191#endif
4771 5192
4772#if EV_EMBED_ENABLE 5193#if EV_EMBED_ENABLE
4773noinline 5194ecb_noinline
4774void 5195void
4775ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT 5196ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
4776{ 5197{
4777 ev_run (w->other, EVRUN_NOWAIT); 5198 ev_run (w->other, EVRUN_NOWAIT);
4778} 5199}
… …
4802 ev_run (EV_A_ EVRUN_NOWAIT); 5223 ev_run (EV_A_ EVRUN_NOWAIT);
4803 } 5224 }
4804 } 5225 }
4805} 5226}
4806 5227
5228#if EV_FORK_ENABLE
4807static void 5229static void
4808embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 5230embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
4809{ 5231{
4810 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 5232 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
4811 5233
… …
4818 ev_run (EV_A_ EVRUN_NOWAIT); 5240 ev_run (EV_A_ EVRUN_NOWAIT);
4819 } 5241 }
4820 5242
4821 ev_embed_start (EV_A_ w); 5243 ev_embed_start (EV_A_ w);
4822} 5244}
5245#endif
4823 5246
4824#if 0 5247#if 0
4825static void 5248static void
4826embed_idle_cb (EV_P_ ev_idle *idle, int revents) 5249embed_idle_cb (EV_P_ ev_idle *idle, int revents)
4827{ 5250{
… …
4830#endif 5253#endif
4831 5254
4832void 5255void
4833ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT 5256ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
4834{ 5257{
4835 if (expect_false (ev_is_active (w))) 5258 if (ecb_expect_false (ev_is_active (w)))
4836 return; 5259 return;
4837 5260
4838 { 5261 {
4839 EV_P = w->other; 5262 EV_P = w->other;
4840 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 5263 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
… …
4848 5271
4849 ev_prepare_init (&w->prepare, embed_prepare_cb); 5272 ev_prepare_init (&w->prepare, embed_prepare_cb);
4850 ev_set_priority (&w->prepare, EV_MINPRI); 5273 ev_set_priority (&w->prepare, EV_MINPRI);
4851 ev_prepare_start (EV_A_ &w->prepare); 5274 ev_prepare_start (EV_A_ &w->prepare);
4852 5275
5276#if EV_FORK_ENABLE
4853 ev_fork_init (&w->fork, embed_fork_cb); 5277 ev_fork_init (&w->fork, embed_fork_cb);
4854 ev_fork_start (EV_A_ &w->fork); 5278 ev_fork_start (EV_A_ &w->fork);
5279#endif
4855 5280
4856 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 5281 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
4857 5282
4858 ev_start (EV_A_ (W)w, 1); 5283 ev_start (EV_A_ (W)w, 1);
4859 5284
… …
4862 5287
4863void 5288void
4864ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT 5289ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
4865{ 5290{
4866 clear_pending (EV_A_ (W)w); 5291 clear_pending (EV_A_ (W)w);
4867 if (expect_false (!ev_is_active (w))) 5292 if (ecb_expect_false (!ev_is_active (w)))
4868 return; 5293 return;
4869 5294
4870 EV_FREQUENT_CHECK; 5295 EV_FREQUENT_CHECK;
4871 5296
4872 ev_io_stop (EV_A_ &w->io); 5297 ev_io_stop (EV_A_ &w->io);
4873 ev_prepare_stop (EV_A_ &w->prepare); 5298 ev_prepare_stop (EV_A_ &w->prepare);
5299#if EV_FORK_ENABLE
4874 ev_fork_stop (EV_A_ &w->fork); 5300 ev_fork_stop (EV_A_ &w->fork);
5301#endif
4875 5302
4876 ev_stop (EV_A_ (W)w); 5303 ev_stop (EV_A_ (W)w);
4877 5304
4878 EV_FREQUENT_CHECK; 5305 EV_FREQUENT_CHECK;
4879} 5306}
… …
4881 5308
4882#if EV_FORK_ENABLE 5309#if EV_FORK_ENABLE
4883void 5310void
4884ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT 5311ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
4885{ 5312{
4886 if (expect_false (ev_is_active (w))) 5313 if (ecb_expect_false (ev_is_active (w)))
4887 return; 5314 return;
4888 5315
4889 EV_FREQUENT_CHECK; 5316 EV_FREQUENT_CHECK;
4890 5317
4891 ev_start (EV_A_ (W)w, ++forkcnt); 5318 ev_start (EV_A_ (W)w, ++forkcnt);
… …
4897 5324
4898void 5325void
4899ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT 5326ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
4900{ 5327{
4901 clear_pending (EV_A_ (W)w); 5328 clear_pending (EV_A_ (W)w);
4902 if (expect_false (!ev_is_active (w))) 5329 if (ecb_expect_false (!ev_is_active (w)))
4903 return; 5330 return;
4904 5331
4905 EV_FREQUENT_CHECK; 5332 EV_FREQUENT_CHECK;
4906 5333
4907 { 5334 {
… …
4919 5346
4920#if EV_CLEANUP_ENABLE 5347#if EV_CLEANUP_ENABLE
4921void 5348void
4922ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT 5349ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4923{ 5350{
4924 if (expect_false (ev_is_active (w))) 5351 if (ecb_expect_false (ev_is_active (w)))
4925 return; 5352 return;
4926 5353
4927 EV_FREQUENT_CHECK; 5354 EV_FREQUENT_CHECK;
4928 5355
4929 ev_start (EV_A_ (W)w, ++cleanupcnt); 5356 ev_start (EV_A_ (W)w, ++cleanupcnt);
… …
4937 5364
4938void 5365void
4939ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT 5366ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4940{ 5367{
4941 clear_pending (EV_A_ (W)w); 5368 clear_pending (EV_A_ (W)w);
4942 if (expect_false (!ev_is_active (w))) 5369 if (ecb_expect_false (!ev_is_active (w)))
4943 return; 5370 return;
4944 5371
4945 EV_FREQUENT_CHECK; 5372 EV_FREQUENT_CHECK;
4946 ev_ref (EV_A); 5373 ev_ref (EV_A);
4947 5374
… …
4960 5387
4961#if EV_ASYNC_ENABLE 5388#if EV_ASYNC_ENABLE
4962void 5389void
4963ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT 5390ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4964{ 5391{
4965 if (expect_false (ev_is_active (w))) 5392 if (ecb_expect_false (ev_is_active (w)))
4966 return; 5393 return;
4967 5394
4968 w->sent = 0; 5395 w->sent = 0;
4969 5396
4970 evpipe_init (EV_A); 5397 evpipe_init (EV_A);
… …
4980 5407
4981void 5408void
4982ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT 5409ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4983{ 5410{
4984 clear_pending (EV_A_ (W)w); 5411 clear_pending (EV_A_ (W)w);
4985 if (expect_false (!ev_is_active (w))) 5412 if (ecb_expect_false (!ev_is_active (w)))
4986 return; 5413 return;
4987 5414
4988 EV_FREQUENT_CHECK; 5415 EV_FREQUENT_CHECK;
4989 5416
4990 { 5417 {

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