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// Copyright (c) 2012, 2013 Ugorji Nwoke. All rights reserved.
// Use of this source code is governed by a BSD-style license found in the LICENSE file.
package codec
import (
"bytes"
"encoding/gob"
"encoding/json"
"flag"
"fmt"
"reflect"
"runtime"
"testing"
"time"
)
// Sample way to run:
// go test -bi -bv -bd=1 -benchmem -bench=.
var (
_ = fmt.Printf
benchTs *TestStruc
approxSize int
benchDoInitBench bool
benchVerify bool
benchUnscientificRes bool = false
//depth of 0 maps to ~400bytes json-encoded string, 1 maps to ~1400 bytes, etc
//For depth>1, we likely trigger stack growth for encoders, making benchmarking unreliable.
benchDepth int
benchInitDebug bool
benchCheckers []benchChecker
)
type benchEncFn func(interface{}) ([]byte, error)
type benchDecFn func([]byte, interface{}) error
type benchIntfFn func() interface{}
type benchChecker struct {
name string
encodefn benchEncFn
decodefn benchDecFn
}
func benchInitFlags() {
flag.BoolVar(&benchInitDebug, "bg", false, "Bench Debug")
flag.IntVar(&benchDepth, "bd", 1, "Bench Depth: If >1, potential unreliable results due to stack growth")
flag.BoolVar(&benchDoInitBench, "bi", false, "Run Bench Init")
flag.BoolVar(&benchVerify, "bv", false, "Verify Decoded Value during Benchmark")
flag.BoolVar(&benchUnscientificRes, "bu", false, "Show Unscientific Results during Benchmark")
}
func benchInit() {
benchTs = newTestStruc(benchDepth, true)
approxSize = approxDataSize(reflect.ValueOf(benchTs))
bytesLen := 1024 * 4 * (benchDepth + 1) * (benchDepth + 1)
if bytesLen < approxSize {
bytesLen = approxSize
}
benchCheckers = append(benchCheckers,
benchChecker{"msgpack", fnMsgpackEncodeFn, fnMsgpackDecodeFn},
benchChecker{"binc-nosym", fnBincNoSymEncodeFn, fnBincNoSymDecodeFn},
benchChecker{"binc-sym", fnBincSymEncodeFn, fnBincSymDecodeFn},
benchChecker{"simple", fnSimpleEncodeFn, fnSimpleDecodeFn},
benchChecker{"gob", fnGobEncodeFn, fnGobDecodeFn},
benchChecker{"json", fnJsonEncodeFn, fnJsonDecodeFn},
)
if benchDoInitBench {
runBenchInit()
}
}
func runBenchInit() {
logT(nil, "..............................................")
logT(nil, "BENCHMARK INIT: %v", time.Now())
logT(nil, "To run full benchmark comparing encodings (MsgPack, Binc, Simple, JSON, GOB, etc), "+
"use: \"go test -bench=.\"")
logT(nil, "Benchmark: ")
logT(nil, "\tStruct recursive Depth: %d", benchDepth)
if approxSize > 0 {
logT(nil, "\tApproxDeepSize Of benchmark Struct: %d bytes", approxSize)
}
if benchUnscientificRes {
logT(nil, "Benchmark One-Pass Run (with Unscientific Encode/Decode times): ")
} else {
logT(nil, "Benchmark One-Pass Run:")
}
for _, bc := range benchCheckers {
doBenchCheck(bc.name, bc.encodefn, bc.decodefn)
}
logT(nil, "..............................................")
if benchInitDebug {
logT(nil, "<<<<====>>>> depth: %v, ts: %#v\n", benchDepth, benchTs)
}
}
func fnBenchNewTs() interface{} {
return new(TestStruc)
}
func doBenchCheck(name string, encfn benchEncFn, decfn benchDecFn) {
runtime.GC()
tnow := time.Now()
buf, err := encfn(benchTs)
if err != nil {
logT(nil, "\t%10s: **** Error encoding benchTs: %v", name, err)
}
encDur := time.Now().Sub(tnow)
encLen := len(buf)
runtime.GC()
if !benchUnscientificRes {
logT(nil, "\t%10s: len: %d bytes\n", name, encLen)
return
}
tnow = time.Now()
if err = decfn(buf, new(TestStruc)); err != nil {
logT(nil, "\t%10s: **** Error decoding into new TestStruc: %v", name, err)
}
decDur := time.Now().Sub(tnow)
logT(nil, "\t%10s: len: %d bytes, encode: %v, decode: %v\n", name, encLen, encDur, decDur)
}
func fnBenchmarkEncode(b *testing.B, encName string, ts interface{}, encfn benchEncFn) {
runtime.GC()
b.ResetTimer()
for i := 0; i < b.N; i++ {
_, err := encfn(ts)
if err != nil {
logT(b, "Error encoding benchTs: %s: %v", encName, err)
b.FailNow()
}
}
}
func fnBenchmarkDecode(b *testing.B, encName string, ts interface{},
encfn benchEncFn, decfn benchDecFn, newfn benchIntfFn,
) {
buf, err := encfn(ts)
if err != nil {
logT(b, "Error encoding benchTs: %s: %v", encName, err)
b.FailNow()
}
runtime.GC()
b.ResetTimer()
for i := 0; i < b.N; i++ {
ts = newfn()
if err = decfn(buf, ts); err != nil {
logT(b, "Error decoding into new TestStruc: %s: %v", encName, err)
b.FailNow()
}
if benchVerify {
if vts, vok := ts.(*TestStruc); vok {
verifyTsTree(b, vts)
}
}
}
}
func verifyTsTree(b *testing.B, ts *TestStruc) {
var ts0, ts1m, ts2m, ts1s, ts2s *TestStruc
ts0 = ts
if benchDepth > 0 {
ts1m, ts1s = verifyCheckAndGet(b, ts0)
}
if benchDepth > 1 {
ts2m, ts2s = verifyCheckAndGet(b, ts1m)
}
for _, tsx := range []*TestStruc{ts0, ts1m, ts2m, ts1s, ts2s} {
if tsx != nil {
verifyOneOne(b, tsx)
}
}
}
func verifyCheckAndGet(b *testing.B, ts0 *TestStruc) (ts1m *TestStruc, ts1s *TestStruc) {
// if len(ts1m.Ms) <= 2 {
// logT(b, "Error: ts1m.Ms len should be > 2. Got: %v", len(ts1m.Ms))
// b.FailNow()
// }
if len(ts0.Its) == 0 {
logT(b, "Error: ts0.Islice len should be > 0. Got: %v", len(ts0.Its))
b.FailNow()
}
ts1m = ts0.Mtsptr["0"]
ts1s = ts0.Its[0]
if ts1m == nil || ts1s == nil {
logT(b, "Error: At benchDepth 1, No *TestStruc found")
b.FailNow()
}
return
}
func verifyOneOne(b *testing.B, ts *TestStruc) {
if ts.I64slice[2] != int64(3) {
logT(b, "Error: Decode failed by checking values")
b.FailNow()
}
}
func fnMsgpackEncodeFn(ts interface{}) (bs []byte, err error) {
err = NewEncoderBytes(&bs, testMsgpackH).Encode(ts)
return
}
func fnMsgpackDecodeFn(buf []byte, ts interface{}) error {
return NewDecoderBytes(buf, testMsgpackH).Decode(ts)
}
func fnBincEncodeFn(ts interface{}, sym AsSymbolFlag) (bs []byte, err error) {
tSym := testBincH.AsSymbols
testBincH.AsSymbols = sym
err = NewEncoderBytes(&bs, testBincH).Encode(ts)
testBincH.AsSymbols = tSym
return
}
func fnBincDecodeFn(buf []byte, ts interface{}, sym AsSymbolFlag) (err error) {
tSym := testBincH.AsSymbols
testBincH.AsSymbols = sym
err = NewDecoderBytes(buf, testBincH).Decode(ts)
testBincH.AsSymbols = tSym
return
}
func fnBincNoSymEncodeFn(ts interface{}) (bs []byte, err error) {
return fnBincEncodeFn(ts, AsSymbolNone)
}
func fnBincNoSymDecodeFn(buf []byte, ts interface{}) error {
return fnBincDecodeFn(buf, ts, AsSymbolNone)
}
func fnBincSymEncodeFn(ts interface{}) (bs []byte, err error) {
return fnBincEncodeFn(ts, AsSymbolAll)
}
func fnBincSymDecodeFn(buf []byte, ts interface{}) error {
return fnBincDecodeFn(buf, ts, AsSymbolAll)
}
func fnSimpleEncodeFn(ts interface{}) (bs []byte, err error) {
err = NewEncoderBytes(&bs, testSimpleH).Encode(ts)
return
}
func fnSimpleDecodeFn(buf []byte, ts interface{}) error {
return NewDecoderBytes(buf, testSimpleH).Decode(ts)
}
func fnGobEncodeFn(ts interface{}) ([]byte, error) {
bbuf := new(bytes.Buffer)
err := gob.NewEncoder(bbuf).Encode(ts)
return bbuf.Bytes(), err
}
func fnGobDecodeFn(buf []byte, ts interface{}) error {
return gob.NewDecoder(bytes.NewBuffer(buf)).Decode(ts)
}
func fnJsonEncodeFn(ts interface{}) ([]byte, error) {
return json.Marshal(ts)
}
func fnJsonDecodeFn(buf []byte, ts interface{}) error {
return json.Unmarshal(buf, ts)
}
func Benchmark__Msgpack____Encode(b *testing.B) {
fnBenchmarkEncode(b, "msgpack", benchTs, fnMsgpackEncodeFn)
}
func Benchmark__Msgpack____Decode(b *testing.B) {
fnBenchmarkDecode(b, "msgpack", benchTs, fnMsgpackEncodeFn, fnMsgpackDecodeFn, fnBenchNewTs)
}
func Benchmark__Binc_NoSym_Encode(b *testing.B) {
fnBenchmarkEncode(b, "binc", benchTs, fnBincNoSymEncodeFn)
}
func Benchmark__Binc_NoSym_Decode(b *testing.B) {
fnBenchmarkDecode(b, "binc", benchTs, fnBincNoSymEncodeFn, fnBincNoSymDecodeFn, fnBenchNewTs)
}
func Benchmark__Binc_Sym___Encode(b *testing.B) {
fnBenchmarkEncode(b, "binc", benchTs, fnBincSymEncodeFn)
}
func Benchmark__Binc_Sym___Decode(b *testing.B) {
fnBenchmarkDecode(b, "binc", benchTs, fnBincSymEncodeFn, fnBincSymDecodeFn, fnBenchNewTs)
}
func Benchmark__Simple____Encode(b *testing.B) {
fnBenchmarkEncode(b, "simple", benchTs, fnSimpleEncodeFn)
}
func Benchmark__Simple____Decode(b *testing.B) {
fnBenchmarkDecode(b, "simple", benchTs, fnSimpleEncodeFn, fnSimpleDecodeFn, fnBenchNewTs)
}
func Benchmark__Gob________Encode(b *testing.B) {
fnBenchmarkEncode(b, "gob", benchTs, fnGobEncodeFn)
}
func Benchmark__Gob________Decode(b *testing.B) {
fnBenchmarkDecode(b, "gob", benchTs, fnGobEncodeFn, fnGobDecodeFn, fnBenchNewTs)
}
func Benchmark__Json_______Encode(b *testing.B) {
fnBenchmarkEncode(b, "json", benchTs, fnJsonEncodeFn)
}
func Benchmark__Json_______Decode(b *testing.B) {
fnBenchmarkDecode(b, "json", benchTs, fnJsonEncodeFn, fnJsonDecodeFn, fnBenchNewTs)
}
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