github.com/tachunwu/scale@v0.0.0-20230215135019-20d7de63a560/pkg/database/rawalloc/rawalloc.go (about)

     1  package rawalloc
     2  
     3  // Copyright 2018 The Cockroach Authors.
     4  //
     5  // Licensed under the Apache License, Version 2.0 (the "License");
     6  // you may not use this file except in compliance with the License.
     7  // You may obtain a copy of the License at
     8  //
     9  //     http://www.apache.org/licenses/LICENSE-2.0
    10  //
    11  // Unless required by applicable law or agreed to in writing, software
    12  // distributed under the License is distributed on an "AS IS" BASIS,
    13  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
    14  // implied. See the License for the specific language governing
    15  // permissions and limitations under the License.
    16  
    17  // New returns a new byte slice of the specified length and capacity where the
    18  // backing memory is uninitialized. This differs from make([]byte) which
    19  // guarantees that the backing memory for the slice is initialized to zero. Use
    20  // carefully.
    21  func New(len, cap int) []byte {
    22  	ptr := mallocgc(uintptr(cap), nil, false)
    23  	return (*[maxArrayLen]byte)(ptr)[:len:cap]
    24  }