1 /*
2  * Copyright (C) 2011 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package art;
18 
19 public class Test1919 {
20     public static final boolean PRINT_ALL_THREADS = false;
21 
run()22     public static void run() throws Exception {
23         Thread testing_thread = getTestingThread();
24         // TODO(b/124284724): For unknown reasons the testing thread will sometimes SEGV after the
25         // test has otherwise completed successfully. This has only been observed on the release
26         // version of art (libart.so) and I haven't had any luck reproing it. I assume it has
27         // something to do with racing between the DetachCurrentThread and shutdown but I'm not
28         // sure. Since the runtime normally never shuts down anyway for now I'll just ensure
29         // everything gets cleaned up early to prevent the problem from showing up.
30         testing_thread.join();
31         for (Event e : getEvents()) {
32             if (e.thr != null) {
33                 if (PRINT_ALL_THREADS ||
34                         e.thr.equals(Thread.currentThread()) ||
35                         e.thr.equals(testing_thread)) {
36                     System.out.println(e.name + ": " + e.thr.getName());
37                 }
38             }
39         }
40     }
41 
42     static class Event {
43         public final String name;
44         public final Thread thr;
Event(String name, Thread thr)45         public Event(String name, Thread thr) {
46             this.name = name;
47             this.thr = thr;
48         }
49     }
50 
getEvents()51     public static Event[] getEvents() {
52         String[] ns = getEventNames();
53         Thread[] ts = getEventThreads();
54         Event[] es = new Event[Math.min(ns.length, ts.length)];
55         for (int i = 0; i < es.length; i++) {
56             es[i] = new Event(ns[i], ts[i]);
57         }
58         return es;
59     }
60 
getEventNames()61     public static native String[] getEventNames();
getEventThreads()62     public static native Thread[] getEventThreads();
63 
getTestingThread()64     public static native Thread getTestingThread();
65 }
66