go unsafeheader 源码
golang unsafeheader 代码
文件路径：/src/internal/unsafeheader/unsafeheader.go
// Copyright 2020 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 unsafeheader contains header declarations for the Go runtime's slice
// and string implementations.
//
// This package allows packages that cannot import "reflect" to use types that
// are tested to be equivalent to reflect.SliceHeader and reflect.StringHeader.
package unsafeheader
import (
"unsafe"
)
// Slice is the runtime representation of a slice.
// It cannot be used safely or portably and its representation may
// change in a later release.
//
// Unlike reflect.SliceHeader, its Data field is sufficient to guarantee the
// data it references will not be garbage collected.
type Slice struct {
Data unsafe.Pointer
Len int
Cap int
}
// String is the runtime representation of a string.
// It cannot be used safely or portably and its representation may
// change in a later release.
//
// Unlike reflect.StringHeader, its Data field is sufficient to guarantee the
// data it references will not be garbage collected.
type String struct {
Data unsafe.Pointer
Len int
}
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