记录一下，这里学的BytePoolCap, 和sync.Pool
总之就是这个BytePoolCap比sync.Pool快一些，目前不会测试，后面测试了再来填坑。
package main
import (
"fmt"
)
func main() {
// var bpool BytePoolCap
bp := NewBytePoolCap(500,1024,1024)
buf := bp.Get()
defer bp.Put(buf)
fmt.Println()
}
type BytePoolCap struct {
c chan []byte
w int
wcap int
}
func (bp *BytePoolCap) Get() (b []byte) {
select {
case b = <- bp.c:
// ?
default:
// create new buffer
if bp.wcap > 0 {
b = make([]byte, bp.w, bp.wcap)
} else {
b = make([]byte, bp.w)
}
}
return
}
func (bp *BytePoolCap) Put(b []byte) {
select {
case bp.c <- b:
// buffer went back into pool
default:
// buffer didn't go back into pool, just discard
}
}
func NewBytePoolCap(maxSize int, width int, capWidth int) (bp *BytePoolCap) {
return &BytePoolCap{
c: make(chan []byte,maxSize),
w: width,
wcap: capWidth,
}
}