1 files changed, 62 insertions, 0 deletions
diff --git a/test/148-multithread-gc-annotations/src/MovingGCThread.java b/test/148-multithread-gc-annotations/src/MovingGCThread.java
new file mode 100644
index 0000000000..87de9f4ec6
--- /dev/null
+++ b/test/148-multithread-gc-annotations/src/MovingGCThread.java
@@ -0,0 +1,62 @@
+/*
+ * Copyright (C) 2016 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.util.TreeMap;
+
+public class MovingGCThread implements Runnable {
+    private static TreeMap treeMap = new TreeMap();
+
+    public void run() {
+        for (int i = 0; i < 20; i++) {
+            testHomogeneousCompaction();
+        }
+    }
+
+    public static void testHomogeneousCompaction() {
+        final boolean supportHSC = supportHomogeneousSpaceCompact();
+        if (!supportHSC) {
+            return;
+        }
+        Object o = new Object();
+        long addressBefore = objectAddress(o);
+        allocateStuff();
+        final boolean success = performHomogeneousSpaceCompact();
+        allocateStuff();
+        if (!success) {
+            System.out.println("error: Expected " + supportHSC + " but got " + success);
+        }
+        allocateStuff();
+        long addressAfter = objectAddress(o);
+        // This relies on the compaction copying from one space to another space and there being
+        // no overlap.
+        if (addressBefore == addressAfter) {
+            System.out.println("error: Expected different adddress " + addressBefore + " vs " +
+                    addressAfter);
+        }
+    }
+
+    private static void allocateStuff() {
+        for (int i = 0; i < 1000; ++i) {
+            Object o = new Object();
+            treeMap.put(o.hashCode(), o);
+        }
+    }
+
+    // Methods to get access to ART internals.
+    private static native boolean supportHomogeneousSpaceCompact();
+    private static native boolean performHomogeneousSpaceCompact();
+    private static native long objectAddress(Object object);
+}