From 8682e7deb579dce4f0a4ebfab5deaaed212bbd10 Mon Sep 17 00:00:00 2001
From: zzz <zzz@mail.i2p>
Date: Fri, 27 Nov 2009 16:29:15 +0000
Subject: [PATCH] cache the hash of the Hash
---
core/java/src/net/i2p/data/Hash.java | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/core/java/src/net/i2p/data/Hash.java b/core/java/src/net/i2p/data/Hash.java
index a99f5ceb5a..10856d0c2d 100644
--- a/core/java/src/net/i2p/data/Hash.java
+++ b/core/java/src/net/i2p/data/Hash.java
@@ -32,6 +32,7 @@ public class Hash extends DataStructureImpl {
private volatile String _stringified;
private volatile String _base64ed;
private /* FIXME final FIXME */ Map _xorCache;
+ private int _cachedHashCode;
public final static int HASH_LENGTH = 32;
public final static Hash FAKE_HASH = new Hash(new byte[HASH_LENGTH]);
@@ -54,6 +55,7 @@ public class Hash extends DataStructureImpl {
_data = data;
_stringified = null;
_base64ed = null;
+ _cachedHashCode = calcHashCode();
}
/**
@@ -133,6 +135,7 @@ public class Hash extends DataStructureImpl {
_base64ed = null;
int read = read(in, _data);
if (read != HASH_LENGTH) throw new DataFormatException("Not enough bytes to read the hash");
+ _cachedHashCode = calcHashCode();
}
public void writeBytes(OutputStream out) throws DataFormatException, IOException {
@@ -150,6 +153,11 @@ public class Hash extends DataStructureImpl {
/** a Hash is a hash, so just use the first 4 bytes for speed */
@Override
public int hashCode() {
+ return _cachedHashCode;
+ }
+
+ /** a Hash is a hash, so just use the first 4 bytes for speed */
+ private int calcHashCode() {
int rv = 0;
if (_data != null) {
for (int i = 0; i < 4; i++)
--
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