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go/src/pkg/syscall/syscall_unix.go
Ian Lance Taylor 4fd41e494a syscall: Permit non-blocking syscalls.
Permit system calls to be designated as non-blocking, meaning
that we simply call them without involving the scheduler.

This change by itself is mostly performance neutral.  In
combination with a following change to the net package there
is a performance advantage.

R=rsc, dfc, r2, iant2, rsc1
CC=golang-dev
https://golang.org/cl/4278055
2011-03-16 19:03:01 -07:00

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634 B
Go

// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package syscall
var (
Stdin = 0
Stdout = 1
Stderr = 2
)
func Syscall(trap, a1, a2, a3 uintptr) (r1, r2, err uintptr)
func Syscall6(trap, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2, err uintptr)
func RawSyscall(trap, a1, a2, a3 uintptr) (r1, r2, err uintptr)
func RawSyscall6(trap, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2, err uintptr)
func Errstr(errno int) string {
if errno < 0 || errno >= int(len(errors)) {
return "error " + str(errno)
}
return errors[errno]
}