| /* |
| * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* |
| * @test |
| * @bug 8171385 |
| * @summary Test JShell#stop |
| * @modules jdk.jshell/jdk.internal.jshell.tool |
| * @build KullaTesting TestingInputStream |
| * @run testng StopExecutionTest |
| */ |
| |
| import java.io.IOException; |
| import java.io.PipedInputStream; |
| import java.io.PipedOutputStream; |
| import java.io.PrintWriter; |
| import java.io.StringWriter; |
| import java.util.Random; |
| import java.util.concurrent.CountDownLatch; |
| import java.util.function.Consumer; |
| |
| import jdk.internal.jshell.tool.StopDetectingInputStream; |
| import jdk.internal.jshell.tool.StopDetectingInputStream.State; |
| import jdk.jshell.JShell; |
| import org.testng.annotations.Test; |
| |
| import static org.testng.Assert.assertEquals; |
| import static org.testng.Assert.fail; |
| |
| @Test |
| public class StopExecutionTest extends KullaTesting { |
| |
| private final Object lock = new Object(); |
| private boolean isStopped; |
| |
| @Test(enabled = false) // TODO 8129546 |
| public void testStopLoop() throws InterruptedException { |
| scheduleStop("while (true) ;"); |
| } |
| |
| @Test(enabled = false) // TODO 8129546 |
| public void testStopASleep() throws InterruptedException { |
| scheduleStop("while (true) { try { Thread.sleep(100); } catch (InterruptedException ex) { } }"); |
| } |
| |
| @Test(enabled = false) // TODO 8129546 |
| public void testScriptCatchesStop() throws Exception { |
| scheduleStop("for (int i = 0; i < 30; i++) { try { Thread.sleep(100); } catch (Throwable ex) { } }"); |
| } |
| |
| private void scheduleStop(String src) throws InterruptedException { |
| JShell state = getState(); |
| isStopped = false; |
| StringWriter writer = new StringWriter(); |
| PrintWriter out = new PrintWriter(writer); |
| Thread t = new Thread(() -> { |
| int i = 1; |
| int n = 30; |
| synchronized (lock) { |
| do { |
| state.stop(); |
| if (!isStopped) { |
| out.println("Not stopped. Try again: " + i); |
| try { |
| lock.wait(1000); |
| } catch (InterruptedException ignored) { |
| } |
| } |
| } while (i++ < n && !isStopped); |
| if (!isStopped) { |
| System.err.println(writer.toString()); |
| fail("Evaluation was not stopped: '" + src + "'"); |
| } |
| } |
| }); |
| t.start(); |
| assertEval(src); |
| synchronized (lock) { |
| out.println("Evaluation was stopped successfully: '" + src + "'"); |
| isStopped = true; |
| lock.notify(); |
| } |
| // wait until the background thread finishes to prevent from calling 'stop' on closed state. |
| t.join(); |
| } |
| |
| public void testStopDetectingInputRandom() throws IOException { |
| long seed = System.nanoTime(); |
| Random r = new Random(seed); |
| |
| for (int m = 0; m < 10; m++) { |
| StopDetectingInputStream buffer = new StopDetectingInputStream(null, null); |
| |
| buffer.setState(State.BUFFER); |
| |
| for (int i = 0; i < 1000; i++) { |
| int chunkSize = r.nextInt(StopDetectingInputStream.INITIAL_SIZE * 3); |
| |
| doChunk(buffer, chunkSize); |
| } |
| } |
| } |
| |
| private void doChunk(StopDetectingInputStream buffer, int chunkSize) throws IOException { |
| for (int c = 0; c < chunkSize; c++) { |
| buffer.write(c); |
| } |
| |
| for (int c = 0; c < chunkSize; c++) { |
| int read = buffer.read(); |
| |
| assertEquals(read, c); |
| } |
| } |
| |
| public void testStopDetectingInputBufferWaitStop() throws Exception { |
| Runnable shouldNotHappenRun = |
| () -> { throw new AssertionError("Should not happen."); }; |
| Consumer<Exception> shouldNotHappenExc = |
| exc -> { throw new AssertionError("Should not happen.", exc); }; |
| StopDetectingInputStream sd = new StopDetectingInputStream(shouldNotHappenRun, shouldNotHappenExc); |
| CountDownLatch reading = new CountDownLatch(1); |
| PipedInputStream is = new PipedInputStream() { |
| @Override |
| public int read() throws IOException { |
| reading.countDown(); |
| return super.read(); |
| } |
| }; |
| PipedOutputStream os = new PipedOutputStream(is); |
| |
| sd.setInputStream(is); |
| sd.setState(State.BUFFER); |
| reading.await(); |
| sd.setState(State.WAIT); |
| os.write(3); |
| int value = sd.read(); |
| |
| if (value != 3) { |
| throw new AssertionError(); |
| } |
| } |
| } |