Revert "Revert "ART: Add ThreadGroup API support""
This reverts commit 87071bfb6c1b708bdfa2a5f91d4744667b3a0443.
Add an ObjectLock, which corresponds to the synchronized(this)
implementation on the Java side. Wait for the expected five
child threads in the root group before running the actual
child test.
Bug: 31455788
Change-Id: Ib7a065d6a11f06f0325e3a8db040629f3ca69407
Test: m test-art-host-run-test-925-threadgroups
diff --git a/test/925-threadgroups/src/Main.java b/test/925-threadgroups/src/Main.java
new file mode 100644
index 0000000..c59efe2
--- /dev/null
+++ b/test/925-threadgroups/src/Main.java
@@ -0,0 +1,113 @@
+/*
+ * Copyright (C) 2017 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.Arrays;
+import java.util.Comparator;
+
+public class Main {
+ public static void main(String[] args) throws Exception {
+ System.loadLibrary(args[1]);
+
+ doTest();
+ }
+
+ private static void doTest() throws Exception {
+ Thread t1 = Thread.currentThread();
+ ThreadGroup curGroup = t1.getThreadGroup();
+
+ ThreadGroup rootGroup = curGroup;
+ while (rootGroup.getParent() != null) {
+ rootGroup = rootGroup.getParent();
+ }
+
+ ThreadGroup topGroups[] = getTopThreadGroups();
+ if (topGroups == null || topGroups.length != 1 || topGroups[0] != rootGroup) {
+ System.out.println(Arrays.toString(topGroups));
+ throw new RuntimeException("Unexpected topGroups");
+ }
+
+ printThreadGroupInfo(curGroup);
+ printThreadGroupInfo(rootGroup);
+
+ waitGroupChildren(rootGroup, 5 /* # daemons */, 30 /* timeout in seconds */);
+
+ checkChildren(curGroup);
+ }
+
+ private static void printThreadGroupInfo(ThreadGroup tg) {
+ Object[] threadGroupInfo = getThreadGroupInfo(tg);
+ if (threadGroupInfo == null || threadGroupInfo.length != 4) {
+ System.out.println(Arrays.toString(threadGroupInfo));
+ throw new RuntimeException("threadGroupInfo length wrong");
+ }
+
+ System.out.println(tg);
+ System.out.println(" " + threadGroupInfo[0]); // Parent
+ System.out.println(" " + threadGroupInfo[1]); // Name
+ System.out.println(" " + threadGroupInfo[2]); // Priority
+ System.out.println(" " + threadGroupInfo[3]); // Daemon
+ }
+
+ private static void checkChildren(ThreadGroup tg) {
+ Object[] data = getThreadGroupChildren(tg);
+ Thread[] threads = (Thread[])data[0];
+ ThreadGroup[] groups = (ThreadGroup[])data[1];
+
+ Arrays.sort(threads, THREAD_COMP);
+ Arrays.sort(groups, THREADGROUP_COMP);
+ System.out.println(tg.getName() + ":");
+ System.out.println(" " + Arrays.toString(threads));
+ System.out.println(" " + Arrays.toString(groups));
+
+ if (tg.getParent() != null) {
+ checkChildren(tg.getParent());
+ }
+ }
+
+ private static void waitGroupChildren(ThreadGroup tg, int expectedChildCount, int timeoutS)
+ throws Exception {
+ for (int i = 0; i < timeoutS; i++) {
+ Object[] data = getThreadGroupChildren(tg);
+ Thread[] threads = (Thread[])data[0];
+ if (threads.length == expectedChildCount) {
+ return;
+ }
+ Thread.sleep(1000);
+ }
+
+ Object[] data = getThreadGroupChildren(tg);
+ Thread[] threads = (Thread[])data[0];
+ System.out.println(Arrays.toString(threads));
+ throw new RuntimeException("Waited unsuccessfully for " + expectedChildCount + " children.");
+ }
+
+ private final static Comparator<Thread> THREAD_COMP = new Comparator<Thread>() {
+ public int compare(Thread o1, Thread o2) {
+ return o1.getName().compareTo(o2.getName());
+ }
+ };
+
+ private final static Comparator<ThreadGroup> THREADGROUP_COMP = new Comparator<ThreadGroup>() {
+ public int compare(ThreadGroup o1, ThreadGroup o2) {
+ return o1.getName().compareTo(o2.getName());
+ }
+ };
+
+ private static native ThreadGroup[] getTopThreadGroups();
+ private static native Object[] getThreadGroupInfo(ThreadGroup tg);
+ // Returns an array where element 0 is an array of threads and element 1 is an array of groups.
+ private static native Object[] getThreadGroupChildren(ThreadGroup tg);
+}