34 lines
725 B
Go
34 lines
725 B
Go
package bytepool
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import "sync"
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// BytePool is a cached pool of reusable byte slices.
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type BytePool struct {
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sync.Pool
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}
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// New allocates a new BytePool with slices of equal length and capacity.
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func New(length int) *BytePool {
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var bp BytePool
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bp.Pool.New = func() interface{} {
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return make([]byte, length)
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}
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return &bp
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}
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// Get returns a byte slice from the pool.
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func (bp *BytePool) Get() []byte {
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return bp.Pool.Get().([]byte)
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}
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// Put returns a byte slice to the pool.
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func (bp *BytePool) Put(b []byte) {
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b = b[:cap(b)]
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// Zero out the bytes.
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// Apparently this specific expression is optimized by the compiler, see
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// github.com/golang/go/issues/5373.
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for i := range b {
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b[i] = 0
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}
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bp.Pool.Put(b)
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}
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