mirror of
https://github.com/VictoriaMetrics/VictoriaMetrics.git
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7f4fb34182
It is better developing vmctl tool in VictoriaMetrics repository, so it could be released together with the rest of vmutils tools such as vmalert, vmagent, vmbackup, vmrestore and vmauth.
113 lines
3.3 KiB
Go
113 lines
3.3 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 windows
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// Package windows contains an interface to the low-level operating system
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// primitives. OS details vary depending on the underlying system, and
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// by default, godoc will display the OS-specific documentation for the current
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// system. If you want godoc to display syscall documentation for another
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// system, set $GOOS and $GOARCH to the desired system. For example, if
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// you want to view documentation for freebsd/arm on linux/amd64, set $GOOS
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// to freebsd and $GOARCH to arm.
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//
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// The primary use of this package is inside other packages that provide a more
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// portable interface to the system, such as "os", "time" and "net". Use
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// those packages rather than this one if you can.
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//
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// For details of the functions and data types in this package consult
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// the manuals for the appropriate operating system.
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//
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// These calls return err == nil to indicate success; otherwise
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// err represents an operating system error describing the failure and
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// holds a value of type syscall.Errno.
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package windows // import "golang.org/x/sys/windows"
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import (
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"bytes"
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"strings"
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"syscall"
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"unsafe"
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"golang.org/x/sys/internal/unsafeheader"
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)
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// ByteSliceFromString returns a NUL-terminated slice of bytes
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// containing the text of s. If s contains a NUL byte at any
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// location, it returns (nil, syscall.EINVAL).
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func ByteSliceFromString(s string) ([]byte, error) {
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if strings.IndexByte(s, 0) != -1 {
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return nil, syscall.EINVAL
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}
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a := make([]byte, len(s)+1)
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copy(a, s)
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return a, nil
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}
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// BytePtrFromString returns a pointer to a NUL-terminated array of
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// bytes containing the text of s. If s contains a NUL byte at any
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// location, it returns (nil, syscall.EINVAL).
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func BytePtrFromString(s string) (*byte, error) {
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a, err := ByteSliceFromString(s)
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if err != nil {
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return nil, err
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}
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return &a[0], nil
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}
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// ByteSliceToString returns a string form of the text represented by the slice s, with a terminating NUL and any
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// bytes after the NUL removed.
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func ByteSliceToString(s []byte) string {
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if i := bytes.IndexByte(s, 0); i != -1 {
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s = s[:i]
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}
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return string(s)
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}
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// BytePtrToString takes a pointer to a sequence of text and returns the corresponding string.
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// If the pointer is nil, it returns the empty string. It assumes that the text sequence is terminated
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// at a zero byte; if the zero byte is not present, the program may crash.
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func BytePtrToString(p *byte) string {
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if p == nil {
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return ""
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}
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if *p == 0 {
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return ""
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}
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// Find NUL terminator.
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n := 0
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for ptr := unsafe.Pointer(p); *(*byte)(ptr) != 0; n++ {
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ptr = unsafe.Pointer(uintptr(ptr) + 1)
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}
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var s []byte
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h := (*unsafeheader.Slice)(unsafe.Pointer(&s))
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h.Data = unsafe.Pointer(p)
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h.Len = n
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h.Cap = n
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return string(s)
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}
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// Single-word zero for use when we need a valid pointer to 0 bytes.
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// See mksyscall.pl.
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var _zero uintptr
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func (ts *Timespec) Unix() (sec int64, nsec int64) {
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return int64(ts.Sec), int64(ts.Nsec)
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}
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func (tv *Timeval) Unix() (sec int64, nsec int64) {
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return int64(tv.Sec), int64(tv.Usec) * 1000
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}
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func (ts *Timespec) Nano() int64 {
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return int64(ts.Sec)*1e9 + int64(ts.Nsec)
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}
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func (tv *Timeval) Nano() int64 {
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return int64(tv.Sec)*1e9 + int64(tv.Usec)*1000
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}
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