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package bpool
// BytePool implements a leaky pool of []byte in the form of a bounded
// channel.
type BytePool struct {
c chan []byte
w int
}
// NewBytePool creates a new BytePool bounded to the given maxSize, with new
// byte arrays sized based on width.
func NewBytePool(maxSize int, width int) (bp *BytePool) {
return &BytePool{
c: make(chan []byte, maxSize),
w: width,
}
}
// Get gets a []byte from the BytePool, or creates a new one if none are
// available in the pool.
func (bp *BytePool) Get() (b []byte) {
select {
case b = <-bp.c:
// reuse existing buffer
default:
// create new buffer
b = make([]byte, bp.w)
}
return
}
// Put returns the given Buffer to the BytePool.
func (bp *BytePool) Put(b []byte) {
select {
case bp.c <- b:
// buffer went back into pool
default:
// buffer didn't go back into pool, just discard
}
}
// Width returns the width of the byte arrays in this pool.
func (bp *BytePool) Width() (n int) {
return bp.w
}
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