diff options
Diffstat (limited to 'benchmarks/src')
-rw-r--r-- | benchmarks/src/benchmarks/ReferenceGetBenchmark.java | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/benchmarks/src/benchmarks/ReferenceGetBenchmark.java b/benchmarks/src/benchmarks/ReferenceGetBenchmark.java new file mode 100644 index 0000000..80142a1 --- /dev/null +++ b/benchmarks/src/benchmarks/ReferenceGetBenchmark.java @@ -0,0 +1,60 @@ +/* + * Copyright (C) 2014 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License + */ + +package benchmarks; + +import com.google.caliper.Param; +import com.google.caliper.SimpleBenchmark; + +import java.lang.ref.Reference; +import java.lang.ref.SoftReference; +import java.lang.ref.WeakReference; +import java.lang.reflect.*; + +public class ReferenceGetBenchmark extends SimpleBenchmark { + @Param boolean intrinsicDisabled; + + private Object obj = "str"; + + protected void setUp() throws Exception { + Field intrinsicDisabledField = Reference.class.getDeclaredField("disableIntrinsic"); + intrinsicDisabledField.setAccessible(true); + intrinsicDisabledField.setBoolean(null, intrinsicDisabled); + } + + public void timeSoftReferenceGet(int reps) throws Exception { + Reference soft = new SoftReference(obj); + for (int i = 0; i < reps; i++) { + Object o = soft.get(); + } + } + + public void timeWeakReferenceGet(int reps) throws Exception { + Reference weak = new WeakReference(obj); + for (int i = 0; i < reps; i++) { + Object o = weak.get(); + } + } + + public void timeNonPreservedWeakReferenceGet(int reps) throws Exception { + Reference weak = new WeakReference(obj); + obj = null; + Runtime.getRuntime().gc(); + for (int i = 0; i < reps; i++) { + Object o = weak.get(); + } + } +} |