fix buffer pool

core/buffer_pool.go

@@ -0,0 +1,23 @@
+package core
+
+import (
+	"sync"
+)
+
+const defaultBufferSize = 2 * 1024
+
+var bufPool = sync.Pool{New: func() interface{} { return make([]byte, defaultBufferSize) }}
+
+func newBytes(size int) []byte {
+	if size <= defaultBufferSize {
+		return bufPool.Get().([]byte)
+	} else {
+		return make([]byte, size)
+	}
+}
+
+func freeBytes(b []byte) {
+	if len(b) >= defaultBufferSize {
+		bufPool.Put(b)
+	}
+}