1// Copyright 2009 The Go Authors. All rights reserved. 2// Use of this source code is governed by a BSD-style 3// license that can be found in the LICENSE file. 4 5// +build windows 6 7// Package windows contains an interface to the low-level operating system 8// primitives. OS details vary depending on the underlying system, and 9// by default, godoc will display the OS-specific documentation for the current 10// system. If you want godoc to display syscall documentation for another 11// system, set $GOOS and $GOARCH to the desired system. For example, if 12// you want to view documentation for freebsd/arm on linux/amd64, set $GOOS 13// to freebsd and $GOARCH to arm. 14// The primary use of this package is inside other packages that provide a more 15// portable interface to the system, such as "os", "time" and "net". Use 16// those packages rather than this one if you can. 17// For details of the functions and data types in this package consult 18// the manuals for the appropriate operating system. 19// These calls return err == nil to indicate success; otherwise 20// err represents an operating system error describing the failure and 21// holds a value of type syscall.Errno. 22package windows // import "golang.org/x/sys/windows" 23 24import ( 25 "syscall" 26) 27 28// ByteSliceFromString returns a NUL-terminated slice of bytes 29// containing the text of s. If s contains a NUL byte at any 30// location, it returns (nil, syscall.EINVAL). 31func ByteSliceFromString(s string) ([]byte, error) { 32 for i := 0; i < len(s); i++ { 33 if s[i] == 0 { 34 return nil, syscall.EINVAL 35 } 36 } 37 a := make([]byte, len(s)+1) 38 copy(a, s) 39 return a, nil 40} 41 42// BytePtrFromString returns a pointer to a NUL-terminated array of 43// bytes containing the text of s. If s contains a NUL byte at any 44// location, it returns (nil, syscall.EINVAL). 45func BytePtrFromString(s string) (*byte, error) { 46 a, err := ByteSliceFromString(s) 47 if err != nil { 48 return nil, err 49 } 50 return &a[0], nil 51} 52 53// Single-word zero for use when we need a valid pointer to 0 bytes. 54// See mksyscall.pl. 55var _zero uintptr 56 57func (ts *Timespec) Unix() (sec int64, nsec int64) { 58 return int64(ts.Sec), int64(ts.Nsec) 59} 60 61func (tv *Timeval) Unix() (sec int64, nsec int64) { 62 return int64(tv.Sec), int64(tv.Usec) * 1000 63} 64 65func (ts *Timespec) Nano() int64 { 66 return int64(ts.Sec)*1e9 + int64(ts.Nsec) 67} 68 69func (tv *Timeval) Nano() int64 { 70 return int64(tv.Sec)*1e9 + int64(tv.Usec)*1000 71} 72