archive/jdk
1
0
Fork 0
mirror of https://github.com/openjdk/jdk.git synced 2025-08-27 06:45:07 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions

8329597: C2: Intrinsify Reference.clear

Browse source 
Reviewed-by: rcastanedalo, eosterlund, kvn
This commit is contained in:
Aleksey Shipilev 2024-10-16 14:08:10 +00:00
parent 1cc32237ae
commit 7625b29920
26 changed files with 362 additions and 21 deletions
Download patch file Download diff file Expand all files Collapse all files

81
test/micro/org/openjdk/bench/java/lang/ref/ReferenceClear.java Normal file
View file

@ -0,0 +1,81 @@
/*
* Copyright Amazon.com Inc. or its affiliates. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package org.openjdk.bench.java.lang.ref;
import java.lang.ref.*;
import java.util.concurrent.TimeUnit;
import org.openjdk.jmh.annotations.*;
import org.openjdk.jmh.infra.Blackhole;
@OutputTimeUnit(TimeUnit.NANOSECONDS)
@State(Scope.Thread)
@BenchmarkMode(Mode.AverageTime)
@Warmup(iterations = 3, time = 1, timeUnit = TimeUnit.SECONDS)
@Measurement(iterations = 3, time = 1, timeUnit = TimeUnit.SECONDS)
@Fork(3)
public class ReferenceClear {
final Reference<Object> soft = new SoftReference<>(new Object());
final Reference<Object> weak = new WeakReference<>(new Object());
final Reference<Object> phantom = new PhantomReference<>(new Object(), null);
@Benchmark
public void soft() {
soft.clear();
}
@Benchmark
public void soft_new(Blackhole bh) {
Object ref = new Object();
bh.consume(ref);
Reference<Object> soft = new SoftReference<>(ref);
soft.clear();
}
@Benchmark
public void weak() {
weak.clear();
}
@Benchmark
public void weak_new(Blackhole bh) {
Object ref = new Object();
bh.consume(ref);
Reference<Object> weak = new WeakReference<>(ref);
weak.clear();
}
@Benchmark
public void phantom() {
phantom.clear();
}
@Benchmark
public void phantom_new(Blackhole bh) {
Object ref = new Object();
bh.consume(ref);
Reference<Object> phantom = new PhantomReference<>(ref, null);
phantom.clear();
}
}