From 3ae8e37b8ca2b9a7769d659e134ee2711dc94b89 Mon Sep 17 00:00:00 2001 From: Luke Shumaker Date: Sun, 14 Aug 2022 20:52:33 -0600 Subject: Borrow more test files [ci-skip] --- compat/json/borrowed_bench_test.go | 410 +++++++++++++++++++++++++++++++++++++ 1 file changed, 410 insertions(+) create mode 100644 compat/json/borrowed_bench_test.go (limited to 'compat/json/borrowed_bench_test.go') diff --git a/compat/json/borrowed_bench_test.go b/compat/json/borrowed_bench_test.go new file mode 100644 index 0000000..9560914 --- /dev/null +++ b/compat/json/borrowed_bench_test.go @@ -0,0 +1,410 @@ +// Copyright 2011 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// Large data benchmark. +// The JSON data is a summary of agl's changes in the +// go, webkit, and chromium open source projects. +// We benchmark converting between the JSON form +// and in-memory data structures. + +package json + +import ( + "bytes" + "compress/gzip" + "fmt" + "internal/testenv" + "io" + "os" + "reflect" + "runtime" + "strings" + "sync" + "testing" +) + +type codeResponse struct { + Tree *codeNode `json:"tree"` + Username string `json:"username"` +} + +type codeNode struct { + Name string `json:"name"` + Kids []*codeNode `json:"kids"` + CLWeight float64 `json:"cl_weight"` + Touches int `json:"touches"` + MinT int64 `json:"min_t"` + MaxT int64 `json:"max_t"` + MeanT int64 `json:"mean_t"` +} + +var codeJSON []byte +var codeStruct codeResponse + +func codeInit() { + f, err := os.Open("testdata/code.json.gz") + if err != nil { + panic(err) + } + defer f.Close() + gz, err := gzip.NewReader(f) + if err != nil { + panic(err) + } + data, err := io.ReadAll(gz) + if err != nil { + panic(err) + } + + codeJSON = data + + if err := Unmarshal(codeJSON, &codeStruct); err != nil { + panic("unmarshal code.json: " + err.Error()) + } + + if data, err = Marshal(&codeStruct); err != nil { + panic("marshal code.json: " + err.Error()) + } + + if !bytes.Equal(data, codeJSON) { + println("different lengths", len(data), len(codeJSON)) + for i := 0; i < len(data) && i < len(codeJSON); i++ { + if data[i] != codeJSON[i] { + println("re-marshal: changed at byte", i) + println("orig: ", string(codeJSON[i-10:i+10])) + println("new: ", string(data[i-10:i+10])) + break + } + } + panic("re-marshal code.json: different result") + } +} + +func BenchmarkCodeEncoder(b *testing.B) { + b.ReportAllocs() + if codeJSON == nil { + b.StopTimer() + codeInit() + b.StartTimer() + } + b.RunParallel(func(pb *testing.PB) { + enc := NewEncoder(io.Discard) + for pb.Next() { + if err := enc.Encode(&codeStruct); err != nil { + b.Fatal("Encode:", err) + } + } + }) + b.SetBytes(int64(len(codeJSON))) +} + +func BenchmarkCodeMarshal(b *testing.B) { + b.ReportAllocs() + if codeJSON == nil { + b.StopTimer() + codeInit() + b.StartTimer() + } + b.RunParallel(func(pb *testing.PB) { + for pb.Next() { + if _, err := Marshal(&codeStruct); err != nil { + b.Fatal("Marshal:", err) + } + } + }) + b.SetBytes(int64(len(codeJSON))) +} + +func benchMarshalBytes(n int) func(*testing.B) { + sample := []byte("hello world") + // Use a struct pointer, to avoid an allocation when passing it as an + // interface parameter to Marshal. + v := &struct { + Bytes []byte + }{ + bytes.Repeat(sample, (n/len(sample))+1)[:n], + } + return func(b *testing.B) { + for i := 0; i < b.N; i++ { + if _, err := Marshal(v); err != nil { + b.Fatal("Marshal:", err) + } + } + } +} + +func BenchmarkMarshalBytes(b *testing.B) { + b.ReportAllocs() + // 32 fits within encodeState.scratch. + b.Run("32", benchMarshalBytes(32)) + // 256 doesn't fit in encodeState.scratch, but is small enough to + // allocate and avoid the slower base64.NewEncoder. + b.Run("256", benchMarshalBytes(256)) + // 4096 is large enough that we want to avoid allocating for it. + b.Run("4096", benchMarshalBytes(4096)) +} + +func BenchmarkCodeDecoder(b *testing.B) { + b.ReportAllocs() + if codeJSON == nil { + b.StopTimer() + codeInit() + b.StartTimer() + } + b.RunParallel(func(pb *testing.PB) { + var buf bytes.Buffer + dec := NewDecoder(&buf) + var r codeResponse + for pb.Next() { + buf.Write(codeJSON) + // hide EOF + buf.WriteByte('\n') + buf.WriteByte('\n') + buf.WriteByte('\n') + if err := dec.Decode(&r); err != nil { + b.Fatal("Decode:", err) + } + } + }) + b.SetBytes(int64(len(codeJSON))) +} + +func BenchmarkUnicodeDecoder(b *testing.B) { + b.ReportAllocs() + j := []byte(`"\uD83D\uDE01"`) + b.SetBytes(int64(len(j))) + r := bytes.NewReader(j) + dec := NewDecoder(r) + var out string + b.ResetTimer() + for i := 0; i < b.N; i++ { + if err := dec.Decode(&out); err != nil { + b.Fatal("Decode:", err) + } + r.Seek(0, 0) + } +} + +func BenchmarkDecoderStream(b *testing.B) { + b.ReportAllocs() + b.StopTimer() + var buf bytes.Buffer + dec := NewDecoder(&buf) + buf.WriteString(`"` + strings.Repeat("x", 1000000) + `"` + "\n\n\n") + var x any + if err := dec.Decode(&x); err != nil { + b.Fatal("Decode:", err) + } + ones := strings.Repeat(" 1\n", 300000) + "\n\n\n" + b.StartTimer() + for i := 0; i < b.N; i++ { + if i%300000 == 0 { + buf.WriteString(ones) + } + x = nil + if err := dec.Decode(&x); err != nil || x != 1.0 { + b.Fatalf("Decode: %v after %d", err, i) + } + } +} + +func BenchmarkCodeUnmarshal(b *testing.B) { + b.ReportAllocs() + if codeJSON == nil { + b.StopTimer() + codeInit() + b.StartTimer() + } + b.RunParallel(func(pb *testing.PB) { + for pb.Next() { + var r codeResponse + if err := Unmarshal(codeJSON, &r); err != nil { + b.Fatal("Unmarshal:", err) + } + } + }) + b.SetBytes(int64(len(codeJSON))) +} + +func BenchmarkCodeUnmarshalReuse(b *testing.B) { + b.ReportAllocs() + if codeJSON == nil { + b.StopTimer() + codeInit() + b.StartTimer() + } + b.RunParallel(func(pb *testing.PB) { + var r codeResponse + for pb.Next() { + if err := Unmarshal(codeJSON, &r); err != nil { + b.Fatal("Unmarshal:", err) + } + } + }) + b.SetBytes(int64(len(codeJSON))) +} + +func BenchmarkUnmarshalString(b *testing.B) { + b.ReportAllocs() + data := []byte(`"hello, world"`) + b.RunParallel(func(pb *testing.PB) { + var s string + for pb.Next() { + if err := Unmarshal(data, &s); err != nil { + b.Fatal("Unmarshal:", err) + } + } + }) +} + +func BenchmarkUnmarshalFloat64(b *testing.B) { + b.ReportAllocs() + data := []byte(`3.14`) + b.RunParallel(func(pb *testing.PB) { + var f float64 + for pb.Next() { + if err := Unmarshal(data, &f); err != nil { + b.Fatal("Unmarshal:", err) + } + } + }) +} + +func BenchmarkUnmarshalInt64(b *testing.B) { + b.ReportAllocs() + data := []byte(`3`) + b.RunParallel(func(pb *testing.PB) { + var x int64 + for pb.Next() { + if err := Unmarshal(data, &x); err != nil { + b.Fatal("Unmarshal:", err) + } + } + }) +} + +func BenchmarkIssue10335(b *testing.B) { + b.ReportAllocs() + j := []byte(`{"a":{ }}`) + b.RunParallel(func(pb *testing.PB) { + var s struct{} + for pb.Next() { + if err := Unmarshal(j, &s); err != nil { + b.Fatal(err) + } + } + }) +} + +func BenchmarkIssue34127(b *testing.B) { + b.ReportAllocs() + j := struct { + Bar string `json:"bar,string"` + }{ + Bar: `foobar`, + } + b.RunParallel(func(pb *testing.PB) { + for pb.Next() { + if _, err := Marshal(&j); err != nil { + b.Fatal(err) + } + } + }) +} + +func BenchmarkUnmapped(b *testing.B) { + b.ReportAllocs() + j := []byte(`{"s": "hello", "y": 2, "o": {"x": 0}, "a": [1, 99, {"x": 1}]}`) + b.RunParallel(func(pb *testing.PB) { + var s struct{} + for pb.Next() { + if err := Unmarshal(j, &s); err != nil { + b.Fatal(err) + } + } + }) +} + +func BenchmarkTypeFieldsCache(b *testing.B) { + b.ReportAllocs() + var maxTypes int = 1e6 + if testenv.Builder() != "" { + maxTypes = 1e3 // restrict cache sizes on builders + } + + // Dynamically generate many new types. + types := make([]reflect.Type, maxTypes) + fs := []reflect.StructField{{ + Type: reflect.TypeOf(""), + Index: []int{0}, + }} + for i := range types { + fs[0].Name = fmt.Sprintf("TypeFieldsCache%d", i) + types[i] = reflect.StructOf(fs) + } + + // clearClear clears the cache. Other JSON operations, must not be running. + clearCache := func() { + fieldCache = sync.Map{} + } + + // MissTypes tests the performance of repeated cache misses. + // This measures the time to rebuild a cache of size nt. + for nt := 1; nt <= maxTypes; nt *= 10 { + ts := types[:nt] + b.Run(fmt.Sprintf("MissTypes%d", nt), func(b *testing.B) { + nc := runtime.GOMAXPROCS(0) + for i := 0; i < b.N; i++ { + clearCache() + var wg sync.WaitGroup + for j := 0; j < nc; j++ { + wg.Add(1) + go func(j int) { + for _, t := range ts[(j*len(ts))/nc : ((j+1)*len(ts))/nc] { + cachedTypeFields(t) + } + wg.Done() + }(j) + } + wg.Wait() + } + }) + } + + // HitTypes tests the performance of repeated cache hits. + // This measures the average time of each cache lookup. + for nt := 1; nt <= maxTypes; nt *= 10 { + // Pre-warm a cache of size nt. + clearCache() + for _, t := range types[:nt] { + cachedTypeFields(t) + } + b.Run(fmt.Sprintf("HitTypes%d", nt), func(b *testing.B) { + b.RunParallel(func(pb *testing.PB) { + for pb.Next() { + cachedTypeFields(types[0]) + } + }) + }) + } +} + +func BenchmarkEncodeMarshaler(b *testing.B) { + b.ReportAllocs() + + m := struct { + A int + B RawMessage + }{} + + b.RunParallel(func(pb *testing.PB) { + enc := NewEncoder(io.Discard) + + for pb.Next() { + if err := enc.Encode(&m); err != nil { + b.Fatal("Encode:", err) + } + } + }) +} -- cgit v1.2.3-54-g00ecf