github.com/cloudwego/kitex@v0.9.0/pkg/utils/strbuf.go (about)

     1  /*
     2   * Copyright 2021 CloudWeGo Authors
     3   *
     4   * Licensed under the Apache License, Version 2.0 (the "License");
     5   * you may not use this file except in compliance with the License.
     6   * You may obtain a copy of the License at
     7   *
     8   *     http://www.apache.org/licenses/LICENSE-2.0
     9   *
    10   * Unless required by applicable law or agreed to in writing, software
    11   * distributed under the License is distributed on an "AS IS" BASIS,
    12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13   * See the License for the specific language governing permissions and
    14   * limitations under the License.
    15   */
    16  
    17  //lint:file-ignore SA6002 allocations cannot be avoided
    18  
    19  package utils
    20  
    21  import (
    22  	"strconv"
    23  	"strings"
    24  	"sync"
    25  )
    26  
    27  var intBytesPool = sync.Pool{
    28  	New: func() interface{} {
    29  		return make([]byte, 0, 20)
    30  	},
    31  }
    32  
    33  // WriteInt64ToStringBuilder writes a int64 to a strings.Builder.
    34  func WriteInt64ToStringBuilder(sb *strings.Builder, value int64) {
    35  	bs := intBytesPool.Get().([]byte)
    36  	bs = strconv.AppendInt(bs, value, 10)
    37  	sb.Write(bs)
    38  	intBytesPool.Put(bs[:0])
    39  }