mirror of
https://github.com/golang/go
synced 2024-11-18 07:34:53 -07:00
6b4ae1d28e
We can't depend on init() order, and certainly we don't want to register all future benchmarks that use jsonbytes or jsondata to init() in json_test.go, so we use a more general solution: make generation of jsonbytes and jsondata their own function so that the compiler will take care of the order. R=golang-dev, dave, rsc CC=golang-dev https://golang.org/cl/6282046
94 lines
1.8 KiB
Go
94 lines
1.8 KiB
Go
// Copyright 2011 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// This benchmark tests gob encoding and decoding performance.
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package go1
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import (
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"bytes"
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"encoding/gob"
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"encoding/json"
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"io/ioutil"
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"log"
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"reflect"
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"testing"
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)
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var (
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gobbytes []byte
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gobdata *JSONResponse
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)
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func init() {
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gobdata = gobResponse(&jsondata)
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var buf bytes.Buffer
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if err := gob.NewEncoder(&buf).Encode(gobdata); err != nil {
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panic(err)
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}
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gobbytes = buf.Bytes()
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var r JSONResponse
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if err := gob.NewDecoder(bytes.NewBuffer(gobbytes)).Decode(&r); err != nil {
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panic(err)
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}
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if !reflect.DeepEqual(gobdata, &r) {
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log.Printf("%v\n%v", jsondata, r)
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b, _ := json.Marshal(&jsondata)
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br, _ := json.Marshal(&r)
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log.Printf("%s\n%s\n", b, br)
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panic("gob: encode+decode lost data")
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}
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}
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// gob turns [] into null, so make a copy of the data structure like that
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func gobResponse(r *JSONResponse) *JSONResponse {
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return &JSONResponse{gobNode(r.Tree), r.Username}
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}
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func gobNode(n *JSONNode) *JSONNode {
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n1 := new(JSONNode)
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*n1 = *n
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if len(n1.Kids) == 0 {
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n1.Kids = nil
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} else {
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for i, k := range n1.Kids {
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n1.Kids[i] = gobNode(k)
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}
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}
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return n1
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}
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func gobdec() {
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if gobbytes == nil {
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panic("gobdata not initialized")
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}
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var r JSONResponse
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if err := gob.NewDecoder(bytes.NewBuffer(gobbytes)).Decode(&r); err != nil {
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panic(err)
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}
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_ = r
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}
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func gobenc() {
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if err := gob.NewEncoder(ioutil.Discard).Encode(&gobdata); err != nil {
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panic(err)
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}
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}
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func BenchmarkGobDecode(b *testing.B) {
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b.SetBytes(int64(len(gobbytes)))
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for i := 0; i < b.N; i++ {
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gobdec()
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}
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}
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func BenchmarkGobEncode(b *testing.B) {
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b.SetBytes(int64(len(gobbytes)))
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for i := 0; i < b.N; i++ {
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gobenc()
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}
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}
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