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concurrentify with LBQ

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zzz
2010-07-06 17:14:57 +00:00
parent d04ce7a2b7
commit 3a767d84df
1 changed files with 6 additions and 17 deletions
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23
core/java/src/net/i2p/crypto/SHA256Generator.java
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@ -2,8 +2,7 @@ package net.i2p.crypto;
import gnu.crypto.hash.Sha256Standalone;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.LinkedBlockingQueue;
import net.i2p.I2PAppContext;
import net.i2p.data.Base64;
@ -15,11 +14,9 @@ import net.i2p.data.Hash;
*
*/
public final class SHA256Generator {
private List _digests;
private final List _digestsGnu;
private final LinkedBlockingQueue<Sha256Standalone> _digestsGnu;
public SHA256Generator(I2PAppContext context) {
_digests = new ArrayList(32);
_digestsGnu = new ArrayList(32);
_digestsGnu = new LinkedBlockingQueue(32);
}
public static final SHA256Generator getInstance() {
@ -50,11 +47,7 @@ public final class SHA256Generator {
}
private Sha256Standalone acquireGnu() {
Sha256Standalone rv = null;
synchronized (_digestsGnu) {
if (!_digestsGnu.isEmpty())
rv = (Sha256Standalone)_digestsGnu.remove(0);
}
Sha256Standalone rv = _digestsGnu.poll();
if (rv != null)
rv.reset();
else
@ -63,11 +56,7 @@ public final class SHA256Generator {
}
private void releaseGnu(Sha256Standalone digest) {
synchronized (_digestsGnu) {
if (_digestsGnu.size() < 32) {
_digestsGnu.add(digest);
}
}
_digestsGnu.offer(digest);
}
public static void main(String args[]) {
@ -75,4 +64,4 @@ public final class SHA256Generator {
for (int i = 0; i < args.length; i++)
System.out.println("SHA256 [" + args[i] + "] = [" + Base64.encode(ctx.sha().calculateHash(args[i].getBytes()).getData()) + "]");
}
}
}