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reuse allocated buffer #271

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merged 4 commits into from
Jul 6, 2021
Merged

reuse allocated buffer #271

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acbda69
reuse buffer avoid allocate
Jun 29, 2021
aaa7c36
reuse buffer clean
Jul 2, 2021
08b037b
typo
Jul 2, 2021
91610ac
reuse buf size 512
Jul 5, 2021
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18 changes: 16 additions & 2 deletions encode.go
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Original file line number Diff line number Diff line change
Expand Up @@ -21,9 +21,7 @@ import (
"reflect"
"time"
"unsafe"
)

import (
perrors "github.com/pkg/errors"
)

Expand Down Expand Up @@ -56,6 +54,22 @@ func (e *Encoder) Clean() {
e.refMap = make(map[unsafe.Pointer]_refElem, 7)
}

// ReuseBufferClean reuse the Encoder for a new object encoding.
// it reuse allocated buffer and reduce memory-allocation.
func (e *Encoder) ReuseBufferClean() {
var buffer []byte
if cap(e.buffer) <= 128 {
// reuse buffer, avoid allocate
buffer = e.buffer[:0]
} else {
// avoiding memory leak caused by growth of underlying array
buffer = make([]byte, 64)
}
e.classInfoList = nil
e.buffer = buffer[:0]
e.refMap = make(map[unsafe.Pointer]_refElem, 7)
}

// Buffer returns byte buffer
func (e *Encoder) Buffer() []byte {
return e.buffer[:]
Expand Down