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wire: reduce allocs in BlockHash()

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This commit is contained in:
David Hill 2016-11-16 11:04:47 -05:00 • committed by Dave Collins
parent 807d344fe9
commit 187355448a
1 changed files with 2 additions and 2 deletions

4
wire/blockheader.go
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@ -53,8 +53,8 @@ func (h *BlockHeader) BlockHash() chainhash.Hash {
// transactions. Ignore the error returns since there is no way the // transactions. Ignore the error returns since there is no way the
// encode could fail except being out of memory which would cause a // encode could fail except being out of memory which would cause a
// run-time panic. // run-time panic.
var buf bytes.Buffer buf := bytes.NewBuffer(make([]byte, 0, MaxBlockHeaderPayload))
_ = writeBlockHeader(&buf, 0, h) _ = writeBlockHeader(buf, 0, h)
return chainhash.DoubleHashH(buf.Bytes()) return chainhash.DoubleHashH(buf.Bytes())
} }