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block: improve performance of duplicate tx check.

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This commit is contained in:
Christopher Jeffrey 2014-05-23 23:13:16 -05:00
parent 44774e7c6b
commit e3e324441b
1 changed files with 4 additions and 7 deletions
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11
lib/bcoin/block.js
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@ -232,14 +232,11 @@ Block.prototype._checkBlock = function checkBlock() {
this.merkleTree = this._buildMerkle(); this.merkleTree = this._buildMerkle();
// Check for duplicate tx ids // Check for duplicate tx ids
var unique = []; var unique = {};
for (var i = 0; i < this.txs.length; i++) { for (var i = 0; i < this.txs.length; i++) {
if (!~unique.indexOf(this.txs[i].hash('hex'))) { var hash = this.txs[i].hash('hex');
unique.push(this.txs[i].hash('hex')); if (unique[hash]) return false;
} unique[hash] = true;
}
if (unique.length !== this.txs.length) {
return false;
} }
// Check to make sure block does not have more opcodes than MAX_BLOCK_SIGOPS // Check to make sure block does not have more opcodes than MAX_BLOCK_SIGOPS