| /* |
| * Copyright (c) 2013, 2018, 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. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * 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. |
| */ |
| package jdk.jfr.api.consumer; |
| |
| import java.nio.file.Path; |
| import java.time.Duration; |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import jdk.jfr.Recording; |
| import jdk.jfr.consumer.RecordedEvent; |
| import jdk.jfr.consumer.RecordedFrame; |
| import jdk.jfr.consumer.RecordedStackTrace; |
| import jdk.jfr.consumer.RecordingFile; |
| import jdk.test.lib.Asserts; |
| import jdk.test.lib.Utils; |
| import jdk.test.lib.jfr.EventNames; |
| import jdk.test.lib.jfr.Events; |
| import jdk.test.lib.jfr.RecurseThread; |
| |
| /** |
| * @test |
| * @key jfr |
| * @requires vm.hasJFR |
| * @library /test/lib |
| * @run main/othervm jdk.jfr.api.consumer.TestRecordedFullStackTrace |
| */ |
| public class TestRecordedFullStackTrace { |
| |
| private final static String EVENT_NAME = EventNames.ExecutionSample; |
| private final static int MAX_DEPTH = 64; // currently hardcoded in jvm |
| |
| public static void main(String[] args) throws Throwable { |
| |
| RecurseThread[] threads = new RecurseThread[3]; |
| for (int i = 0; i < threads.length; ++i) { |
| int depth = MAX_DEPTH - 1 + i; |
| threads[i] = new RecurseThread(depth); |
| threads[i].setName("recursethread-" + depth); |
| threads[i].start(); |
| } |
| |
| for (RecurseThread thread : threads) { |
| while (!thread.isInRunLoop()) { |
| Thread.sleep(20); |
| } |
| } |
| |
| assertStackTraces(threads); |
| |
| for (RecurseThread thread : threads) { |
| thread.quit(); |
| thread.join(); |
| } |
| } |
| |
| private static void assertStackTraces(RecurseThread[] threads) throws Throwable { |
| Path path = null; |
| do { |
| Recording recording = new Recording(); |
| recording.enable(EVENT_NAME).withPeriod(Duration.ofMillis(50)); |
| recording.start(); |
| Thread.sleep(500); |
| recording.stop(); |
| // Dump the recording to a file |
| path = Utils.createTempFile("execution-stack-trace", ".jfr"); |
| System.out.println("Dumping to " + path); |
| recording.dump(path); |
| recording.close(); |
| } while (!hasValidStackTraces(path, threads)); |
| } |
| |
| private static boolean hasValidStackTraces(Path path, RecurseThread[] threads) throws Throwable { |
| boolean[] isEventFound = new boolean[threads.length]; |
| |
| for (RecordedEvent event : RecordingFile.readAllEvents(path)) { |
| //System.out.println("Event: " + event); |
| String threadName = Events.assertField(event, "sampledThread.javaName").getValue(); |
| long threadId = Events.assertField(event, "sampledThread.javaThreadId").getValue(); |
| |
| for (int threadIndex = 0; threadIndex < threads.length; ++threadIndex) { |
| RecurseThread currThread = threads[threadIndex]; |
| if (threadId == currThread.getId()) { |
| System.out.println("ThreadName=" + currThread.getName() + ", depth=" + currThread.totalDepth); |
| Asserts.assertEquals(threadName, currThread.getName(), "Wrong thread name"); |
| if ("recurseEnd".equals(getTopMethodName(event))) { |
| isEventFound[threadIndex] = true; |
| checkEvent(event, currThread.totalDepth); |
| break; |
| } |
| } |
| } |
| } |
| |
| for (int i = 0; i < threads.length; ++i) { |
| String msg = "threadIndex=%d, recurseDepth=%d, isEventFound=%b%n"; |
| System.out.printf(msg, i, threads[i].totalDepth, isEventFound[i]); |
| } |
| for (int i = 0; i < threads.length; ++i) { |
| if (!isEventFound[i]) { |
| // no assertion, let's retry. |
| // Could be race condition, i.e safe point during Thread.sleep |
| System.out.println("Falied to validate all threads, will retry."); |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| public static String getTopMethodName(RecordedEvent event) { |
| List<RecordedFrame> frames = event.getStackTrace().getFrames(); |
| Asserts.assertFalse(frames.isEmpty(), "JavaFrames was empty"); |
| return frames.get(0).getMethod().getName(); |
| } |
| |
| private static void checkEvent(RecordedEvent event, int expectedDepth) throws Throwable { |
| RecordedStackTrace stacktrace = null; |
| try { |
| stacktrace = event.getStackTrace(); |
| List<RecordedFrame> frames = stacktrace.getFrames(); |
| Asserts.assertEquals(Math.min(MAX_DEPTH, expectedDepth), frames.size(), "Wrong stacktrace depth. Expected:" + expectedDepth); |
| List<String> expectedMethods = getExpectedMethods(expectedDepth); |
| Asserts.assertEquals(expectedMethods.size(), frames.size(), "Wrong expectedMethods depth. Test error."); |
| |
| for (int i = 0; i < frames.size(); ++i) { |
| String name = frames.get(i).getMethod().getName(); |
| String expectedName = expectedMethods.get(i); |
| System.out.printf("method[%d]=%s, expected=%s%n", i, name, expectedName); |
| Asserts.assertEquals(name, expectedName, "Wrong method name"); |
| } |
| |
| boolean isTruncated = stacktrace.isTruncated(); |
| boolean isTruncateExpected = expectedDepth > MAX_DEPTH; |
| Asserts.assertEquals(isTruncated, isTruncateExpected, "Wrong value for isTruncated. Expected:" + isTruncateExpected); |
| |
| String firstMethod = frames.get(frames.size() - 1).getMethod().getName(); |
| boolean isFullTrace = "run".equals(firstMethod); |
| String msg = String.format("Wrong values for isTruncated=%b, isFullTrace=%b", isTruncated, isFullTrace); |
| Asserts.assertTrue(isTruncated != isFullTrace, msg); |
| } catch (Throwable t) { |
| System.out.println(String.format("stacktrace:%n%s", stacktrace)); |
| throw t; |
| } |
| } |
| |
| private static List<String> getExpectedMethods(int depth) { |
| List<String> methods = new ArrayList<>(); |
| methods.add("recurseEnd"); |
| for (int i = 0; i < depth - 2; ++i) { |
| methods.add((i % 2) == 0 ? "recurseA" : "recurseB"); |
| } |
| methods.add("run"); |
| if (depth > MAX_DEPTH) { |
| methods = methods.subList(0, MAX_DEPTH); |
| } |
| return methods; |
| } |
| } |