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
|
package util
import "log"
type BytePool struct {
pool chan []byte
width int
}
func NewBytePool(width int, depth int) *BytePool {
return &BytePool{
pool: make(chan []byte, depth),
width: width,
}
}
func (p *BytePool) Close() {
close(p.pool)
}
func (p *BytePool) Get() (b []byte) {
select {
case b = <-p.pool:
default:
b = make([]byte, p.width)
}
return b
}
func (p *BytePool) Put(b []byte) {
// avoid panic: send on closed channel in case we're still processing
// packets when the channel is closed
defer func() {
if err := recover(); err != nil {
log.Printf("bytepool: %v", err)
}
}()
select {
case p.pool <- b:
default:
}
}
|
