1 // Copyright 2011 The Go Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style 3 // license that can be found in the LICENSE file. 4 5 // This benchmark tests JSON encoding and decoding performance. 6 7 package go1 8 9 import ( 10 "bytes" 11 "compress/bzip2" 12 "encoding/base64" 13 "encoding/json" 14 "io" 15 "io/ioutil" 16 "testing" 17 ) 18 19 var ( 20 jsonbytes = makeJsonBytes() 21 jsondata = makeJsonData() 22 ) 23 24 func makeJsonBytes() []byte { 25 var r io.Reader 26 r = bytes.NewReader(bytes.Replace(jsonbz2_base64, []byte{'\n'}, nil, -1)) 27 r = base64.NewDecoder(base64.StdEncoding, r) 28 r = bzip2.NewReader(r) 29 b, err := ioutil.ReadAll(r) 30 if err != nil { 31 panic(err) 32 } 33 return b 34 } 35 36 func makeJsonData() JSONResponse { 37 var v JSONResponse 38 if err := json.Unmarshal(jsonbytes, &v); err != nil { 39 panic(err) 40 } 41 return v 42 } 43 44 type JSONResponse struct { 45 Tree *JSONNode `json:"tree"` 46 Username string `json:"username"` 47 } 48 49 type JSONNode struct { 50 Name string `json:"name"` 51 Kids []*JSONNode `json:"kids"` 52 CLWeight float64 `json:"cl_weight"` 53 Touches int `json:"touches"` 54 MinT int64 `json:"min_t"` 55 MaxT int64 `json:"max_t"` 56 MeanT int64 `json:"mean_t"` 57 } 58 59 func jsondec() { 60 var r JSONResponse 61 if err := json.Unmarshal(jsonbytes, &r); err != nil { 62 panic(err) 63 } 64 _ = r 65 } 66 67 func jsonenc() { 68 buf, err := json.Marshal(&jsondata) 69 if err != nil { 70 panic(err) 71 } 72 _ = buf 73 } 74 75 func BenchmarkJSONEncode(b *testing.B) { 76 b.SetBytes(int64(len(jsonbytes))) 77 for i := 0; i < b.N; i++ { 78 jsonenc() 79 } 80 } 81 82 func BenchmarkJSONDecode(b *testing.B) { 83 b.SetBytes(int64(len(jsonbytes))) 84 for i := 0; i < b.N; i++ { 85 jsondec() 86 } 87 } 88
