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Don't pre-calculate the hash in the Transaction parse code. Speeds up processing of large blocks with no relevant transactions.

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This commit is contained in:
Mike Hearn 2011-07-10 17:38:18 +00:00
parent 53d5d7572b
commit ea8cbd7465
2 changed files with 1 additions and 3 deletions
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3
src/com/google/bitcoin/core/Transaction.java
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@ -232,9 +232,6 @@ public class Transaction extends Message implements Serializable {
cursor += output.getMessageSize(); cursor += output.getMessageSize();
} }
lockTime = readUint32(); lockTime = readUint32();
// Store a hash, it may come in useful later (want to avoid reserialization costs).
hash = new Sha256Hash(reverseBytes(doubleDigest(bytes, offset, cursor - offset)));
} }
/** /**

1
tests/com/google/bitcoin/core/BlockChainTest.java
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@ -106,6 +106,7 @@ public class BlockChainTest {
Block b2 = createFakeBlock(unitTestParams, blockStore, tx2).block; Block b2 = createFakeBlock(unitTestParams, blockStore, tx2).block;
hash = b2.getMerkleRoot(); hash = b2.getMerkleRoot();
b2.setMerkleRoot(Sha256Hash.ZERO_HASH); b2.setMerkleRoot(Sha256Hash.ZERO_HASH);
b2.solve();
chain.add(b2); // Broken block is accepted because its contents don't matter to us. chain.add(b2); // Broken block is accepted because its contents don't matter to us.
} }