mirror of
https://github.com/golang/go
synced 2024-11-19 14:04:46 -07:00
23aad448b1
On systems that use kqueue, we always register descriptors for both EVFILT_READ and EVFILT_WRITE. On at least FreeBSD and OpenBSD, when the write end of a pipe is registered for EVFILT_READ and EVFILT_WRITE events, and the read end of the pipe is closed, kqueue reports an EVFILT_READ event with EV_EOF set, but does not report an EVFILT_WRITE event. Since the write to the pipe is waiting for an EVFILT_WRITE event, closing the read end of a pipe can cause the write end to hang rather than attempt another write which will fail with EPIPE. Fix this by treating EVFILT_READ with EV_EOF set as making both reads and writes ready to proceed. The real test for this is in CL 71770, which tests using various timeouts with pipes. Updates #22114 Change-Id: Ib23fbaaddbccd8eee77bdf18f27a7f0aa50e2742 Reviewed-on: https://go-review.googlesource.com/71973 Reviewed-by: Matthew Dempsky <mdempsky@google.com>
126 lines
2.5 KiB
Go
126 lines
2.5 KiB
Go
// Copyright 2009 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// +build ignore
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/*
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Input to cgo.
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GOARCH=amd64 go tool cgo -cdefs defs_dragonfly.go >defs_dragonfly_amd64.h
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*/
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package runtime
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/*
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#include <sys/user.h>
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#include <sys/time.h>
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#include <sys/event.h>
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#include <sys/mman.h>
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#include <sys/ucontext.h>
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#include <sys/rtprio.h>
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#include <sys/signal.h>
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#include <sys/unistd.h>
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#include <errno.h>
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#include <signal.h>
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*/
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import "C"
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const (
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EINTR = C.EINTR
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EFAULT = C.EFAULT
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EBUSY = C.EBUSY
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EAGAIN = C.EAGAIN
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PROT_NONE = C.PROT_NONE
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PROT_READ = C.PROT_READ
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PROT_WRITE = C.PROT_WRITE
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PROT_EXEC = C.PROT_EXEC
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MAP_ANON = C.MAP_ANON
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MAP_PRIVATE = C.MAP_PRIVATE
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MAP_FIXED = C.MAP_FIXED
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MADV_FREE = C.MADV_FREE
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SA_SIGINFO = C.SA_SIGINFO
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SA_RESTART = C.SA_RESTART
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SA_ONSTACK = C.SA_ONSTACK
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SIGHUP = C.SIGHUP
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SIGINT = C.SIGINT
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SIGQUIT = C.SIGQUIT
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SIGILL = C.SIGILL
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SIGTRAP = C.SIGTRAP
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SIGABRT = C.SIGABRT
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SIGEMT = C.SIGEMT
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SIGFPE = C.SIGFPE
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SIGKILL = C.SIGKILL
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SIGBUS = C.SIGBUS
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SIGSEGV = C.SIGSEGV
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SIGSYS = C.SIGSYS
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SIGPIPE = C.SIGPIPE
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SIGALRM = C.SIGALRM
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SIGTERM = C.SIGTERM
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SIGURG = C.SIGURG
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SIGSTOP = C.SIGSTOP
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SIGTSTP = C.SIGTSTP
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SIGCONT = C.SIGCONT
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SIGCHLD = C.SIGCHLD
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SIGTTIN = C.SIGTTIN
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SIGTTOU = C.SIGTTOU
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SIGIO = C.SIGIO
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SIGXCPU = C.SIGXCPU
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SIGXFSZ = C.SIGXFSZ
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SIGVTALRM = C.SIGVTALRM
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SIGPROF = C.SIGPROF
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SIGWINCH = C.SIGWINCH
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SIGINFO = C.SIGINFO
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SIGUSR1 = C.SIGUSR1
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SIGUSR2 = C.SIGUSR2
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FPE_INTDIV = C.FPE_INTDIV
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FPE_INTOVF = C.FPE_INTOVF
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FPE_FLTDIV = C.FPE_FLTDIV
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FPE_FLTOVF = C.FPE_FLTOVF
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FPE_FLTUND = C.FPE_FLTUND
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FPE_FLTRES = C.FPE_FLTRES
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FPE_FLTINV = C.FPE_FLTINV
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FPE_FLTSUB = C.FPE_FLTSUB
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BUS_ADRALN = C.BUS_ADRALN
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BUS_ADRERR = C.BUS_ADRERR
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BUS_OBJERR = C.BUS_OBJERR
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SEGV_MAPERR = C.SEGV_MAPERR
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SEGV_ACCERR = C.SEGV_ACCERR
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ITIMER_REAL = C.ITIMER_REAL
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ITIMER_VIRTUAL = C.ITIMER_VIRTUAL
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ITIMER_PROF = C.ITIMER_PROF
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EV_ADD = C.EV_ADD
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EV_DELETE = C.EV_DELETE
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EV_CLEAR = C.EV_CLEAR
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EV_ERROR = C.EV_ERROR
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EV_EOF = C.EV_EOF
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EVFILT_READ = C.EVFILT_READ
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EVFILT_WRITE = C.EVFILT_WRITE
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)
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type Rtprio C.struct_rtprio
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type Lwpparams C.struct_lwp_params
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type Sigset C.struct___sigset
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type StackT C.stack_t
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type Siginfo C.siginfo_t
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type Mcontext C.mcontext_t
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type Ucontext C.ucontext_t
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type Timespec C.struct_timespec
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type Timeval C.struct_timeval
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type Itimerval C.struct_itimerval
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type Kevent C.struct_kevent
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