mirror of
https://github.com/golang/go
synced 2024-11-08 11:16:19 -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>
166 lines
2.5 KiB
Go
166 lines
2.5 KiB
Go
// created by cgo -cdefs and then converted to Go
|
|
// cgo -cdefs defs_openbsd.go
|
|
|
|
package runtime
|
|
|
|
import "unsafe"
|
|
|
|
const (
|
|
_EINTR = 0x4
|
|
_EFAULT = 0xe
|
|
|
|
_PROT_NONE = 0x0
|
|
_PROT_READ = 0x1
|
|
_PROT_WRITE = 0x2
|
|
_PROT_EXEC = 0x4
|
|
|
|
_MAP_ANON = 0x1000
|
|
_MAP_PRIVATE = 0x2
|
|
_MAP_FIXED = 0x10
|
|
|
|
_MADV_FREE = 0x6
|
|
|
|
_SA_SIGINFO = 0x40
|
|
_SA_RESTART = 0x2
|
|
_SA_ONSTACK = 0x1
|
|
|
|
_SIGHUP = 0x1
|
|
_SIGINT = 0x2
|
|
_SIGQUIT = 0x3
|
|
_SIGILL = 0x4
|
|
_SIGTRAP = 0x5
|
|
_SIGABRT = 0x6
|
|
_SIGEMT = 0x7
|
|
_SIGFPE = 0x8
|
|
_SIGKILL = 0x9
|
|
_SIGBUS = 0xa
|
|
_SIGSEGV = 0xb
|
|
_SIGSYS = 0xc
|
|
_SIGPIPE = 0xd
|
|
_SIGALRM = 0xe
|
|
_SIGTERM = 0xf
|
|
_SIGURG = 0x10
|
|
_SIGSTOP = 0x11
|
|
_SIGTSTP = 0x12
|
|
_SIGCONT = 0x13
|
|
_SIGCHLD = 0x14
|
|
_SIGTTIN = 0x15
|
|
_SIGTTOU = 0x16
|
|
_SIGIO = 0x17
|
|
_SIGXCPU = 0x18
|
|
_SIGXFSZ = 0x19
|
|
_SIGVTALRM = 0x1a
|
|
_SIGPROF = 0x1b
|
|
_SIGWINCH = 0x1c
|
|
_SIGINFO = 0x1d
|
|
_SIGUSR1 = 0x1e
|
|
_SIGUSR2 = 0x1f
|
|
|
|
_FPE_INTDIV = 0x1
|
|
_FPE_INTOVF = 0x2
|
|
_FPE_FLTDIV = 0x3
|
|
_FPE_FLTOVF = 0x4
|
|
_FPE_FLTUND = 0x5
|
|
_FPE_FLTRES = 0x6
|
|
_FPE_FLTINV = 0x7
|
|
_FPE_FLTSUB = 0x8
|
|
|
|
_BUS_ADRALN = 0x1
|
|
_BUS_ADRERR = 0x2
|
|
_BUS_OBJERR = 0x3
|
|
|
|
_SEGV_MAPERR = 0x1
|
|
_SEGV_ACCERR = 0x2
|
|
|
|
_ITIMER_REAL = 0x0
|
|
_ITIMER_VIRTUAL = 0x1
|
|
_ITIMER_PROF = 0x2
|
|
|
|
_EV_ADD = 0x1
|
|
_EV_DELETE = 0x2
|
|
_EV_CLEAR = 0x20
|
|
_EV_ERROR = 0x4000
|
|
_EV_EOF = 0x8000
|
|
_EVFILT_READ = -0x1
|
|
_EVFILT_WRITE = -0x2
|
|
)
|
|
|
|
type tforkt struct {
|
|
tf_tcb unsafe.Pointer
|
|
tf_tid *int32
|
|
tf_stack uintptr
|
|
}
|
|
|
|
type sigcontext struct {
|
|
__sc_unused int32
|
|
sc_mask int32
|
|
|
|
sc_spsr uint32
|
|
sc_r0 uint32
|
|
sc_r1 uint32
|
|
sc_r2 uint32
|
|
sc_r3 uint32
|
|
sc_r4 uint32
|
|
sc_r5 uint32
|
|
sc_r6 uint32
|
|
sc_r7 uint32
|
|
sc_r8 uint32
|
|
sc_r9 uint32
|
|
sc_r10 uint32
|
|
sc_r11 uint32
|
|
sc_r12 uint32
|
|
sc_usr_sp uint32
|
|
sc_usr_lr uint32
|
|
sc_svc_lr uint32
|
|
sc_pc uint32
|
|
}
|
|
|
|
type siginfo struct {
|
|
si_signo int32
|
|
si_code int32
|
|
si_errno int32
|
|
_data [116]byte
|
|
}
|
|
|
|
type stackt struct {
|
|
ss_sp uintptr
|
|
ss_size uintptr
|
|
ss_flags int32
|
|
}
|
|
|
|
type timespec struct {
|
|
tv_sec int64
|
|
tv_nsec int32
|
|
}
|
|
|
|
func (ts *timespec) set_sec(x int64) {
|
|
ts.tv_sec = x
|
|
}
|
|
|
|
func (ts *timespec) set_nsec(x int32) {
|
|
ts.tv_nsec = x
|
|
}
|
|
|
|
type timeval struct {
|
|
tv_sec int64
|
|
tv_usec int32
|
|
}
|
|
|
|
func (tv *timeval) set_usec(x int32) {
|
|
tv.tv_usec = x
|
|
}
|
|
|
|
type itimerval struct {
|
|
it_interval timeval
|
|
it_value timeval
|
|
}
|
|
|
|
type keventt struct {
|
|
ident uint32
|
|
filter int16
|
|
flags uint16
|
|
fflags uint32
|
|
data int64
|
|
udata *byte
|
|
}
|