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-rw-r--r--test/802-deoptimization/src/DeoptimizationController.java86
1 files changed, 86 insertions, 0 deletions
diff --git a/test/802-deoptimization/src/DeoptimizationController.java b/test/802-deoptimization/src/DeoptimizationController.java
new file mode 100644
index 0000000..c031c07
--- /dev/null
+++ b/test/802-deoptimization/src/DeoptimizationController.java
@@ -0,0 +1,86 @@
+/*
+ * Copyright (C) 2015 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.
+ */
+
+import java.io.File;
+import java.io.IOException;
+import java.lang.reflect.Method;
+
+/**
+ * Controls deoptimization using dalvik.system.VMDebug class.
+ */
+public class DeoptimizationController {
+ public static void startDeoptomization() {
+ try {
+ File tempFile;
+ try {
+ tempFile = File.createTempFile("test", ".trace");
+ } catch (IOException e) {
+ System.setProperty("java.io.tmpdir", "/sdcard");
+ tempFile = File.createTempFile("test", ".trace");
+ }
+ tempFile.deleteOnExit();
+ String tempFileName = tempFile.getPath();
+
+ VMDebug.startMethodTracing(tempFileName, 0, 0, false, 1000);
+ if (VMDebug.getMethodTracingMode() == 0) {
+ throw new IllegalStateException("Not tracing.");
+ }
+ } catch (Exception exc) {
+ exc.printStackTrace(System.err);
+ }
+ }
+
+ public static void stopDeoptomization() {
+ try {
+ VMDebug.stopMethodTracing();
+ if (VMDebug.getMethodTracingMode() != 0) {
+ throw new IllegalStateException("Still tracing.");
+ }
+ } catch (Exception exc) {
+ exc.printStackTrace(System.err);
+ }
+ }
+
+ private static class VMDebug {
+ private static final Method startMethodTracingMethod;
+ private static final Method stopMethodTracingMethod;
+ private static final Method getMethodTracingModeMethod;
+
+ static {
+ try {
+ Class<?> c = Class.forName("dalvik.system.VMDebug");
+ startMethodTracingMethod = c.getDeclaredMethod("startMethodTracing", String.class,
+ Integer.TYPE, Integer.TYPE, Boolean.TYPE, Integer.TYPE);
+ stopMethodTracingMethod = c.getDeclaredMethod("stopMethodTracing");
+ getMethodTracingModeMethod = c.getDeclaredMethod("getMethodTracingMode");
+ } catch (Exception e) {
+ throw new RuntimeException(e);
+ }
+ }
+
+ public static void startMethodTracing(String filename, int bufferSize, int flags,
+ boolean samplingEnabled, int intervalUs) throws Exception {
+ startMethodTracingMethod.invoke(null, filename, bufferSize, flags, samplingEnabled,
+ intervalUs);
+ }
+ public static void stopMethodTracing() throws Exception {
+ stopMethodTracingMethod.invoke(null);
+ }
+ public static int getMethodTracingMode() throws Exception {
+ return (int) getMethodTracingModeMethod.invoke(null);
+ }
+ }
+}