start refactoring

utils/pool/pool.go

@@ -0,0 +1,58 @@
+// Copyright 2016 fatedier, fatedier@gmail.com
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package pool
+
+import "sync"
+
+var (
+	bufPool5k sync.Pool
+	bufPool2k sync.Pool
+	bufPool1k sync.Pool
+	bufPool   sync.Pool
+)
+
+func GetBuf(size int) []byte {
+	var x interface{}
+	if size >= 5*1024 {
+		x = bufPool5k.Get()
+	} else if size >= 2*1024 {
+		x = bufPool2k.Get()
+	} else if size >= 1*1024 {
+		x = bufPool1k.Get()
+	} else {
+		x = bufPool.Get()
+	}
+	if x == nil {
+		return make([]byte, size)
+	}
+	buf := x.([]byte)
+	if cap(buf) < size {
+		return make([]byte, size)
+	}
+	return buf[:size]
+}
+
+func PutBuf(buf []byte) {
+	size := cap(buf)
+	if size >= 5*1024 {
+		bufPool5k.Put(buf)
+	} else if size >= 2*1024 {
+		bufPool2k.Put(buf)
+	} else if size >= 1*1024 {
+		bufPool1k.Put(buf)
+	} else {
+		bufPool.Put(buf)
+	}
+}

utils/pool/pool_test.go

@@ -0,0 +1,51 @@
+// Copyright 2016 fatedier, fatedier@gmail.com
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package pool
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestPutBuf(t *testing.T) {
+	buf := make([]byte, 512)
+	PutBuf(buf)
+
+	buf = make([]byte, 1025)
+	PutBuf(buf)
+
+	buf = make([]byte, 2*1025)
+	PutBuf(buf)
+
+	buf = make([]byte, 5*1025)
+	PutBuf(buf)
+}
+
+func TestGetBuf(t *testing.T) {
+	assert := assert.New(t)
+
+	buf := GetBuf(200)
+	assert.Len(buf, 200)
+
+	buf = GetBuf(1025)
+	assert.Len(buf, 1025)
+
+	buf = GetBuf(2 * 1024)
+	assert.Len(buf, 2*1024)
+
+	buf = GetBuf(5 * 2000)
+	assert.Len(buf, 5*2000)
+}