-
-
Notifications
You must be signed in to change notification settings - Fork 78
/
bufferpool.go
69 lines (55 loc) · 1.07 KB
/
bufferpool.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
package buffutil
import (
"bytes"
"io/fs"
"sync"
)
const defaultInitSize = 1024 * 1024
type BufferPool struct {
buffInitSize int
pool sync.Pool
}
func NewBufferPoolWithSize(buffInitSize int) *BufferPool {
return &BufferPool{
buffInitSize: buffInitSize,
pool: sync.Pool{
New: func() any {
return &bytes.Buffer{}
},
},
}
}
func NewBufferPool() *BufferPool {
return NewBufferPoolWithSize(defaultInitSize)
}
func (p *BufferPool) Get() RecyclableBuffer {
buff := p.pool.Get().(*bytes.Buffer)
buff.Grow(p.buffInitSize)
return RecyclableBuffer{
Buffer: buff,
pool: p,
}
}
func (p *BufferPool) Put(b RecyclableBuffer) {
if b.Buffer == nil {
panic("BufferPool.Put: RecyclableBuffer was already recycled")
}
b.Buffer.Reset()
p.pool.Put(b.Buffer)
b.pool = nil
b.Buffer = nil
}
type RecyclableBuffer struct {
*bytes.Buffer
pool *BufferPool
}
func (b RecyclableBuffer) Closed() bool {
return b.Buffer != nil
}
func (b RecyclableBuffer) Close() error {
if b.Buffer == nil || b.pool == nil {
return fs.ErrClosed
}
b.pool.Put(b)
return nil
}