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package dht
// Slab memory allocation
// Initialise the slab as a channel of blocks, allocating them as required and
// pushing them back on the slab. This reduces garbage collection.
type slab chan []byte
func newSlab(blockSize int, numBlocks int) slab {
s := make(slab, numBlocks)
for i := 0; i < numBlocks; i++ {
s <- make([]byte, blockSize)
}
return s
}
func (s slab) alloc() (x []byte) {
return <-s
}
func (s slab) free(x []byte) {
// Check we are using the right dimensions
x = x[:cap(x)]
s <- x
}
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