changeset 35962:193850999306

8149025: JFR - Event based tracing should cover monitor inflation Reviewed-by: dcubed, egahlin, mgronlun
author dsimms
date Thu, 04 Feb 2016 18:33:02 +0100
parents 9a2d83d45bb4
children 039e2b5f6fd8
files jdk/com/oracle/jfr/runtime/TestJavaMonitorInflateEvent.java
diffstat 1 files changed, 105 insertions(+), 0 deletions(-) [+]
line wrap: on
line diff
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/com/oracle/jfr/runtime/TestJavaMonitorInflateEvent.java	Thu Feb 04 18:33:02 2016 +0100
@@ -0,0 +1,105 @@
+/*
+ * Copyright (c) 2013, 2015, Oracle and/or its affiliates. All rights reserved.
+ * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
+ */
+
+import java.util.List;
+import java.util.concurrent.CountDownLatch;
+
+import jrockit.Asserts;
+import jrockit.TestThread;
+import jrockit.XRun;
+import jrockit.jfr.TestRecording;
+import jrockit.jfr.ValueFilter;
+import oracle.jrockit.jfr.parser.FLREvent;
+import oracle.jrockit.jfr.parser.FLRStruct;
+
+/*
+ * @test TestJavaMonitorInflateEvent
+ * @key jfr
+ * @library ../common
+ * @modules jdk.jfr/oracle.jrockit.jfr
+ *          jdk.jfr/oracle.jrockit.jfr.parser
+ * @build jrockit.* jrockit.jfr.*
+ * @run main/othervm -XX:+UnlockCommercialFeatures -XX:+FlightRecorder TestJavaMonitorInflateEvent
+ */
+public class TestJavaMonitorInflateEvent {
+
+    private static final String FIELD_CLASS_NAME = "name";
+    private static final String FIELD_KLASS      = "klass";
+    private static final String FIELD_ADDRESS    = "address";
+    private static final String FIELD_CAUSE      = "cause";
+
+    private final static String EVENT_PATH = "java/monitor_inflate";
+
+    static class Lock {
+    }
+
+    public static void main(String[] args) throws Exception {
+        TestRecording r = new TestRecording();
+        try {
+            r.createJVMSetting(EVENT_PATH, true, true, 0, 0);
+
+            final Lock lock = new Lock();
+            final CountDownLatch latch = new CountDownLatch(1);
+
+            // create a thread that waits
+            TestThread waitThread = new TestThread(new XRun() {
+                @Override
+                public void xrun() throws Throwable {
+                    synchronized (lock) {
+                        latch.countDown();
+                        lock.wait(123456);
+                    }
+                }
+            });
+            try {
+                r.start();
+                waitThread.start();
+                latch.await();
+                synchronized (lock) {
+                    lock.notifyAll();
+                }
+            } finally {
+                waitThread.join();
+                r.stop();
+            }
+
+            List<FLREvent> events = r.parser().findJVMEvents(EVENT_PATH);
+            System.out.println(events);
+            if (events.isEmpty()) {
+                throw new Exception("Expected event");
+            }
+
+            String thisThreadName = Thread.currentThread().getName();
+            String waitThreadName = waitThread.getName();
+
+            // Find at least one event with the correct monitor class and check the other fields
+            boolean foundEvent = false;
+            for (FLREvent event : events) {
+                if (!String.valueOf(event.getThread().getResolvedValue("name")).equals(waitThreadName)) {
+                    continue;
+                }
+                // Check lock class
+                FLRStruct klassStruct = (FLRStruct) event.getResolvedValue(FIELD_KLASS);
+                String recordedLockClass = String.valueOf(klassStruct.getResolvedValue(FIELD_CLASS_NAME));
+                String lockClass = lock.getClass().getName();
+                if (!recordedLockClass.equals(lockClass)) {
+                    continue;
+                }
+
+                foundEvent = true;
+                // Check address
+                Asserts.assertNotEquals(0L, event.getResolvedValue(FIELD_ADDRESS), FIELD_ADDRESS + " should not be 0");
+                // Check cause
+                Asserts.assertNotNull(event.getValue(FIELD_CAUSE), FIELD_CAUSE + " should not be null");
+            }
+            Asserts.assertTrue(foundEvent, "Excepted event from test thread");
+        } catch (Throwable e) {
+            r.copyTo("failed.jfr");
+            throw e;
+        } finally {
+            r.close();
+        }
+    }
+}