Merge "Add test 096, added to dalvik since we started on art." into ics-mr1-plus-art
diff --git a/test/096-array-copy-concurrent-gc/expected.txt b/test/096-array-copy-concurrent-gc/expected.txt
new file mode 100644
index 0000000..23b9dab
--- /dev/null
+++ b/test/096-array-copy-concurrent-gc/expected.txt
@@ -0,0 +1,3 @@
+Initializing...
+Starting the test
+Test OK
diff --git a/test/096-array-copy-concurrent-gc/info.txt b/test/096-array-copy-concurrent-gc/info.txt
new file mode 100644
index 0000000..37dd8be
--- /dev/null
+++ b/test/096-array-copy-concurrent-gc/info.txt
@@ -0,0 +1,2 @@
+This is a test to verify that System.arraycopy works nice together with
+the concurrent gc.
diff --git a/test/096-array-copy-concurrent-gc/src/Main.java b/test/096-array-copy-concurrent-gc/src/Main.java
new file mode 100644
index 0000000..c8e538b
--- /dev/null
+++ b/test/096-array-copy-concurrent-gc/src/Main.java
@@ -0,0 +1,86 @@
+/*
+ * Copyright (C) 2011 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.
+ */
+
+/**
+ * Running concurrent gc and doing some System.arraycopy
+ * Several threads is created in order to increase the probability
+ * of thread switches at critical points. Without creating several
+ * threads the test case usually passed even when there were bugs.
+ * Size of array and amount of garbage created is based on experimental
+ * numbers and is a tradeoff between time that the test takes when
+ * it succeeds and the probability that the test discovers a problem.
+ */
+public class Main {
+ public static void main(String args[]) {
+ new ObjectCreatorThread(true).start();
+ new ObjectCreatorThread(false).start();
+ new ObjectCreatorThread(false).start();
+ }
+
+ static class ObjectCreatorThread extends Thread {
+ boolean mDoLog;
+ public ObjectCreatorThread(boolean doLog) {
+ mDoLog = doLog;
+ }
+
+ @Override
+ public void run() {
+ new Main().stressArray(mDoLog);
+ }
+ }
+
+ Object [] array = new Object[10000];
+
+ void stressArray(boolean doLog) {
+ // We want many references in the array
+ // We also want elements close to each other to have large
+ // diff in address so lets skip every 2:nd address so it is null
+ if (doLog) {
+ System.out.println("Initializing...");
+ }
+ for (int i = 0; i < array.length; i+=2) {
+ array[i] = new String("Creating some garbage" + i);
+ }
+
+ if (doLog) {
+ System.out.println("Starting the test");
+ }
+
+ for (int j = 0; j < array.length; j++) {
+ Object obj = array[array.length - 1];
+ System.arraycopy(array, 0, array, 1, array.length - 1);
+ array[0] = obj;
+ new String("Creating some garbage" + Math.random());
+ new String("Creating some garbage" + Math.random());
+ new String("Creating some garbage" + Math.random());
+ new String("Creating some garbage" + Math.random());
+ }
+
+ for (int j = 0; j < array.length; j++) {
+ Object obj = array[0];
+ System.arraycopy(array, 1, array, 0, array.length - 1);
+ array[array.length - 1] = obj;
+ new String("Creating some garbage" + Math.random());
+ new String("Creating some garbage" + Math.random());
+ new String("Creating some garbage" + Math.random());
+ new String("Creating some garbage" + Math.random());
+ }
+
+ if (doLog) {
+ System.out.println("Test OK");
+ }
+ }
+}
