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* SDSCache: Use weak refs; increase size for pub keys

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This commit is contained in:
zzz
2011-09-06 12:13:33 +00:00
parent 5030a86311
commit fdc3af97aa
3 changed files with 10 additions and 5 deletions
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2
core/java/src/net/i2p/data/PublicKey.java
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@ -21,7 +21,7 @@ import java.io.IOException;
*/
public class PublicKey extends SimpleDataStructure {
public final static int KEYSIZE_BYTES = 256;
private static final int CACHE_SIZE = 256;
private static final int CACHE_SIZE = 1024;
private static final SDSCache<PublicKey> _cache = new SDSCache(PublicKey.class, KEYSIZE_BYTES, CACHE_SIZE);

11
core/java/src/net/i2p/data/SDSCache.java
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@ -3,6 +3,7 @@ package net.i2p.data;
import java.io.EOFException;
import java.io.IOException;
import java.io.InputStream;
import java.lang.ref.WeakReference;
import java.lang.reflect.Constructor;
import java.lang.reflect.InvocationTargetException;
import java.util.LinkedHashMap;
@ -56,7 +57,7 @@ public class SDSCache<V extends SimpleDataStructure> {
}
/** the LRU cache */
private final Map<Integer, V> _cache;
private final Map<Integer, WeakReference<V>> _cache;
/** the byte array length for the class we are caching */
private final int _datalen;
/** the constructor for the class we are caching */
@ -111,7 +112,11 @@ public class SDSCache<V extends SimpleDataStructure> {
V rv;
Integer key = hashCodeOf(data);
synchronized(_cache) {
rv = _cache.get(key);
WeakReference<V> ref = _cache.get(key);
if (ref != null)
rv = ref.get();
else
rv = null;
if (rv != null && DataHelper.eq(data, rv.getData())) {
// found it, we don't need the data passed in any more
SimpleByteCache.release(data);
@ -127,7 +132,7 @@ public class SDSCache<V extends SimpleDataStructure> {
} catch (InvocationTargetException e) {
throw new RuntimeException("SDSCache error", e);
}
_cache.put(key, rv);
_cache.put(key, new WeakReference(rv));
found = 0;
}
}

2
core/java/src/net/i2p/data/SigningPublicKey.java
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@ -22,7 +22,7 @@ import java.io.IOException;
*/
public class SigningPublicKey extends SimpleDataStructure {
public final static int KEYSIZE_BYTES = 128;
private static final int CACHE_SIZE = 256;
private static final int CACHE_SIZE = 1024;
private static final SDSCache<SigningPublicKey> _cache = new SDSCache(SigningPublicKey.class, KEYSIZE_BYTES, CACHE_SIZE);