1 files changed, 85 insertions, 0 deletions
diff --git a/test/2239-varhandle-perf-vh-gaa/src/BenchmarkBase.java b/test/2239-varhandle-perf-vh-gaa/src/BenchmarkBase.java
new file mode 100644
index 0000000000..ee390b46ad
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+++ b/test/2239-varhandle-perf-vh-gaa/src/BenchmarkBase.java
@@ -0,0 +1,85 @@
+/*
+ * 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.
+ */
+
+public class BenchmarkBase {
+  public final String name;
+
+  // Empty constructor.
+  public BenchmarkBase(String name) {
+    this.name = name;
+  }
+
+  // The benchmark code.
+  // This function is not used, if both [warmup] and [exercise] are overwritten.
+  public void run() throws Throwable { }
+
+  // Runs a short version of the benchmark. By default invokes [run] once.
+  public void warmup() throws Throwable {
+    run();
+  }
+
+  // Exercises the benchmark. By default invokes [run] 10 times.
+  public void exercise() throws Throwable {
+    for (int i = 0; i < 10; ++i) {
+      run();
+    }
+  }
+
+  // Not measured setup code executed prior to the benchmark runs.
+  public void setup() throws Throwable { }
+
+  // Not measures teardown code executed after the benchark runs.
+  public void teardown() throws Throwable { }
+
+  // Measures the score for this benchmark by executing it repeatedly until
+  // time minimum has been reached.
+  protected double measureFor(boolean doWarmup, long timeMinimum) throws Throwable {
+    int iter = 0;
+    long startTime = System.currentTimeMillis();
+    long elapsed = 0;
+    while (elapsed < timeMinimum) {
+      if (doWarmup) {
+        warmup();
+      } else {
+        exercise();
+      }
+      elapsed = System.currentTimeMillis() - startTime;
+      iter++;
+    }
+    return 1000.0 * elapsed / iter;
+  }
+
+  // Measures the score for the benchmark and returns it.
+  public double measure() throws Throwable {
+    setup();
+    // Warmup for at least 100ms. Discard result.
+    measureFor(true, 100);
+    // Run the benchmark for at least 1000ms.
+    double result = measureFor(false, 1000);
+    teardown();
+    return result;
+  }
+
+  // Allow subclasses to override how the name is printed.
+  public String getName() {
+    return name;
+  }
+
+  public void report() throws Throwable {
+    double score = measure();
+    System.out.println(getName() + "(RunTime): " + score + " us.");
+  }
+}
+\ No newline at end of file