github.com/MerlinKodo/gvisor@v0.0.0-20231110090155-957f62ecf90e/pkg/gohacks/slice_go120_unsafe.go (about)

     1  // Copyright 2023 The gVisor Authors.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  //go:build go1.20
    16  
    17  package gohacks
    18  
    19  import (
    20  	"unsafe"
    21  )
    22  
    23  // Slice returns a slice whose underlying array starts at ptr an which length
    24  // and capacity are len.
    25  //
    26  // Slice is a wrapper around unsafe.Slice. Prefer to use unsafe.Slice directly
    27  // if possible.
    28  func Slice[T any](ptr *T, length int) []T {
    29  	return unsafe.Slice(ptr, length)
    30  }