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| author | Ian Lance Taylor <ian@gcc.gnu.org> | 2011-03-24 23:46:17 +0000 |
|---|---|---|
| committer | Ian Lance Taylor <ian@gcc.gnu.org> | 2011-03-24 23:46:17 +0000 |
| commit | 8039ca76a5705ae5052b20cee64110c32545c4fc (patch) | |
| tree | 9319bca77115a32f6a0b5e8bcd651465b14c76da /libgo/go/gob/timing_test.go | |
| parent | 7114321ee4f521ea9fbdd08a4c23b361181f3658 (diff) | |
| download | gcc-8039ca76a5705ae5052b20cee64110c32545c4fc.zip gcc-8039ca76a5705ae5052b20cee64110c32545c4fc.tar.gz gcc-8039ca76a5705ae5052b20cee64110c32545c4fc.tar.bz2 | |
Update to current version of Go library.
From-SVN: r171427
Diffstat (limited to 'libgo/go/gob/timing_test.go')
| -rw-r--r-- | libgo/go/gob/timing_test.go | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/libgo/go/gob/timing_test.go b/libgo/go/gob/timing_test.go new file mode 100644 index 0000000..645f4fe --- /dev/null +++ b/libgo/go/gob/timing_test.go @@ -0,0 +1,90 @@ +// 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. + +package gob + +import ( + "bytes" + "fmt" + "io" + "os" + "runtime" + "testing" +) + +type Bench struct { + A int + B float64 + C string + D []byte +} + +func benchmarkEndToEnd(r io.Reader, w io.Writer, b *testing.B) { + b.StopTimer() + enc := NewEncoder(w) + dec := NewDecoder(r) + bench := &Bench{7, 3.2, "now is the time", []byte("for all good men")} + b.StartTimer() + for i := 0; i < b.N; i++ { + if enc.Encode(bench) != nil { + panic("encode error") + } + if dec.Decode(bench) != nil { + panic("decode error") + } + } +} + +func BenchmarkEndToEndPipe(b *testing.B) { + r, w, err := os.Pipe() + if err != nil { + panic("can't get pipe:" + err.String()) + } + benchmarkEndToEnd(r, w, b) +} + +func BenchmarkEndToEndByteBuffer(b *testing.B) { + var buf bytes.Buffer + benchmarkEndToEnd(&buf, &buf, b) +} + +func TestCountEncodeMallocs(t *testing.T) { + var buf bytes.Buffer + enc := NewEncoder(&buf) + bench := &Bench{7, 3.2, "now is the time", []byte("for all good men")} + mallocs := 0 - runtime.MemStats.Mallocs + const count = 1000 + for i := 0; i < count; i++ { + err := enc.Encode(bench) + if err != nil { + t.Fatal("encode:", err) + } + } + mallocs += runtime.MemStats.Mallocs + fmt.Printf("mallocs per encode of type Bench: %d\n", mallocs/count) +} + +func TestCountDecodeMallocs(t *testing.T) { + var buf bytes.Buffer + enc := NewEncoder(&buf) + bench := &Bench{7, 3.2, "now is the time", []byte("for all good men")} + const count = 1000 + for i := 0; i < count; i++ { + err := enc.Encode(bench) + if err != nil { + t.Fatal("encode:", err) + } + } + dec := NewDecoder(&buf) + mallocs := 0 - runtime.MemStats.Mallocs + for i := 0; i < count; i++ { + *bench = Bench{} + err := dec.Decode(&bench) + if err != nil { + t.Fatal("decode:", err) + } + } + mallocs += runtime.MemStats.Mallocs + fmt.Printf("mallocs per decode of type Bench: %d\n", mallocs/count) +} |