| /* |
| * 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.io.File; |
| |
| public class Main { |
| public static void main(String[] args) throws Exception { |
| if (args.length != 3) { |
| throw new AssertionError("Unexpected number of args: " + args.length); |
| } |
| |
| if (!"--stack-trace-dir".equals(args[1])) { |
| throw new AssertionError("Unexpected argument in position 1: " + args[1]); |
| } |
| |
| // Send ourselves signal 3, which forces stack traces to be written to disk. |
| android.system.Os.kill(android.system.Os.getpid(), 3); |
| |
| File[] files = null; |
| final String stackTraceDir = args[2]; |
| for (int i = 0; i < 5; ++i) { |
| // Give the signal handler some time to run and dump traces - up to a maximum |
| // of 5 seconds. This is a kludge, but it's hard to do this without using things |
| // like inotify / WatchService and the like. |
| Thread.sleep(1000); |
| |
| files = (new File(stackTraceDir)).listFiles(); |
| if (files != null && files.length == 1) { |
| break; |
| } |
| } |
| |
| |
| if (files == null) { |
| throw new AssertionError("Gave up waiting for traces: " + java.util.Arrays.toString(files)); |
| } |
| |
| final String fileName = files[0].getName(); |
| if (!fileName.startsWith("anr-pid")) { |
| throw new AssertionError("Unexpected prefix: " + fileName); |
| } |
| |
| if (!fileName.contains(String.valueOf(android.system.Os.getpid()))) { |
| throw new AssertionError("File name does not contain process PID: " + fileName); |
| } |
| } |
| } |