mirror of
https://github.com/golang/go
synced 2024-11-19 15:14:45 -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>
184 lines
2.9 KiB
Go
184 lines
2.9 KiB
Go
// created by cgo -cdefs and then converted to Go
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// cgo -cdefs defs_netbsd.go defs_netbsd_arm.go
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package runtime
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const (
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_EINTR = 0x4
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_EFAULT = 0xe
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_PROT_NONE = 0x0
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_PROT_READ = 0x1
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_PROT_WRITE = 0x2
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_PROT_EXEC = 0x4
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_MAP_ANON = 0x1000
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_MAP_PRIVATE = 0x2
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_MAP_FIXED = 0x10
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_MADV_FREE = 0x6
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_SA_SIGINFO = 0x40
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_SA_RESTART = 0x2
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_SA_ONSTACK = 0x1
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_SIGHUP = 0x1
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_SIGINT = 0x2
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_SIGQUIT = 0x3
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_SIGILL = 0x4
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_SIGTRAP = 0x5
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_SIGABRT = 0x6
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_SIGEMT = 0x7
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_SIGFPE = 0x8
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_SIGKILL = 0x9
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_SIGBUS = 0xa
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_SIGSEGV = 0xb
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_SIGSYS = 0xc
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_SIGPIPE = 0xd
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_SIGALRM = 0xe
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_SIGTERM = 0xf
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_SIGURG = 0x10
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_SIGSTOP = 0x11
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_SIGTSTP = 0x12
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_SIGCONT = 0x13
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_SIGCHLD = 0x14
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_SIGTTIN = 0x15
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_SIGTTOU = 0x16
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_SIGIO = 0x17
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_SIGXCPU = 0x18
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_SIGXFSZ = 0x19
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_SIGVTALRM = 0x1a
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_SIGPROF = 0x1b
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_SIGWINCH = 0x1c
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_SIGINFO = 0x1d
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_SIGUSR1 = 0x1e
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_SIGUSR2 = 0x1f
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_FPE_INTDIV = 0x1
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_FPE_INTOVF = 0x2
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_FPE_FLTDIV = 0x3
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_FPE_FLTOVF = 0x4
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_FPE_FLTUND = 0x5
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_FPE_FLTRES = 0x6
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_FPE_FLTINV = 0x7
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_FPE_FLTSUB = 0x8
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_BUS_ADRALN = 0x1
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_BUS_ADRERR = 0x2
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_BUS_OBJERR = 0x3
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_SEGV_MAPERR = 0x1
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_SEGV_ACCERR = 0x2
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_ITIMER_REAL = 0x0
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_ITIMER_VIRTUAL = 0x1
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_ITIMER_PROF = 0x2
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_EV_ADD = 0x1
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_EV_DELETE = 0x2
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_EV_CLEAR = 0x20
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_EV_RECEIPT = 0
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_EV_ERROR = 0x4000
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_EV_EOF = 0x8000
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_EVFILT_READ = 0x0
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_EVFILT_WRITE = 0x1
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)
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type sigset struct {
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__bits [4]uint32
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}
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type siginfo struct {
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_signo int32
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_code int32
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_errno int32
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_reason uintptr
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_reasonx [16]byte
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}
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type stackt struct {
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ss_sp uintptr
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ss_size uintptr
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ss_flags int32
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}
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type timespec struct {
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tv_sec int64
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tv_nsec int32
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_ [4]byte // EABI
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}
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func (ts *timespec) set_sec(x int32) {
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ts.tv_sec = int64(x)
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}
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func (ts *timespec) set_nsec(x int32) {
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ts.tv_nsec = x
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}
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type timeval struct {
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tv_sec int64
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tv_usec int32
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_ [4]byte // EABI
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}
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func (tv *timeval) set_usec(x int32) {
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tv.tv_usec = x
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}
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type itimerval struct {
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it_interval timeval
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it_value timeval
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}
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type mcontextt struct {
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__gregs [17]uint32
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_ [4]byte // EABI
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__fpu [272]byte // EABI
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_mc_tlsbase uint32
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_ [4]byte // EABI
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}
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type ucontextt struct {
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uc_flags uint32
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uc_link *ucontextt
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uc_sigmask sigset
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uc_stack stackt
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_ [4]byte // EABI
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uc_mcontext mcontextt
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__uc_pad [2]int32
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}
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type keventt struct {
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ident uint32
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filter uint32
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flags uint32
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fflags uint32
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data int64
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udata *byte
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_ [4]byte // EABI
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}
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// created by cgo -cdefs and then converted to Go
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// cgo -cdefs defs_netbsd.go defs_netbsd_arm.go
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const (
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_REG_R0 = 0x0
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_REG_R1 = 0x1
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_REG_R2 = 0x2
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_REG_R3 = 0x3
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_REG_R4 = 0x4
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_REG_R5 = 0x5
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_REG_R6 = 0x6
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_REG_R7 = 0x7
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_REG_R8 = 0x8
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_REG_R9 = 0x9
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_REG_R10 = 0xa
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_REG_R11 = 0xb
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_REG_R12 = 0xc
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_REG_R13 = 0xd
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_REG_R14 = 0xe
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_REG_R15 = 0xf
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_REG_CPSR = 0x10
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)
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