forked from Shiloh/githaven
39 lines
893 B
Go
39 lines
893 B
Go
|
package render
|
||
|
|
|
||
|
|
import "bytes"
|
||
|
|
|
||
|
|
// BufferPool implements a pool of bytes.Buffers in the form of a bounded channel.
|
||
|
|
// Pulled from the github.com/oxtoacart/bpool package (Apache licensed).
|
||
|
|
type BufferPool struct {
|
||
|
|
c chan *bytes.Buffer
|
||
|
|
}
|
||
|
|
|
||
|
|
// NewBufferPool creates a new BufferPool bounded to the given size.
|
||
|
|
func NewBufferPool(size int) (bp *BufferPool) {
|
||
|
|
return &BufferPool{
|
||
|
|
c: make(chan *bytes.Buffer, size),
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Get gets a Buffer from the BufferPool, or creates a new one if none are
|
||
|
|
// available in the pool.
|
||
|
|
func (bp *BufferPool) Get() (b *bytes.Buffer) {
|
||
|
|
select {
|
||
|
|
case b = <-bp.c:
|
||
|
|
// reuse existing buffer
|
||
|
|
default:
|
||
|
|
// create new buffer
|
||
|
|
b = bytes.NewBuffer([]byte{})
|
||
|
|
}
|
||
|
|
return
|
||
|
|
}
|
||
|
|
|
||
|
|
// Put returns the given Buffer to the BufferPool.
|
||
|
|
func (bp *BufferPool) Put(b *bytes.Buffer) {
|
||
|
|
b.Reset()
|
||
|
|
select {
|
||
|
|
case bp.c <- b:
|
||
|
|
default: // Discard the buffer if the pool is full.
|
||
|
|
}
|
||
|
|
}
|