--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/test/jdk/jdk/jfr/event/gc/collection/GCGarbageCollectionUtil.java Tue May 15 20:24:34 2018 +0200
@@ -0,0 +1,104 @@
+/*
+ * 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.event.gc.collection;
+
+import static jdk.test.lib.Asserts.assertGreaterThan;
+import static jdk.test.lib.Asserts.assertTrue;
+
+import java.io.File;
+import java.nio.file.Paths;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Set;
+
+import jdk.jfr.consumer.RecordedEvent;
+import jdk.jfr.consumer.RecordingFile;
+import jdk.test.lib.jfr.AppExecutorHelper;
+import jdk.test.lib.jfr.Events;
+import jdk.test.lib.process.OutputAnalyzer;
+
+
+/**
+ * Class to verify GarbageCollection event.
+ * It starts the application provoking GCGarbageCollection with enabled JFR,
+ * collects events and verify the 'name' and 'cause' fields to be expected.
+ * It's supposed to be invoked from tests.
+ */
+public class GCGarbageCollectionUtil {
+ private final static String EVENT_SETTINGS_FILE =
+ System.getProperty("test.src", ".") + File.separator + "gc-testsettings.jfc";
+
+ /**
+ * Verifies the 'name' and 'cause' fields of received events to be expected.
+ * @param testID - a string to identify test
+ * @param testFlags - VM flags including GC to start the app
+ * @param gcNames - expected values for the 'name' field
+ * @param gcCauses - expected values for the 'cause' field
+ * @throws Exception in case of any failure
+ */
+ public static void test(String testID, String[] testFlags,
+ String[] gcNames, String... gcCauses) throws Exception {
+
+ String jfrFile = testID + ".jfr";
+
+ List<String> summaryFlags = new ArrayList<>();
+ Collections.addAll(summaryFlags, testFlags);
+ summaryFlags.add("-Xmx100m");
+ summaryFlags.add("-XX:+UnlockExperimentalVMOptions");
+ summaryFlags.add("-XX:-UseFastUnorderedTimeStamps");
+ summaryFlags.add("-Xlog:gc*=debug");
+
+
+ String args[] = {};
+ OutputAnalyzer analyzer = AppExecutorHelper.executeAndRecord(EVENT_SETTINGS_FILE, jfrFile,
+ (String[])summaryFlags.toArray(new String[0]), AppGCProvoker.class.getName(), args);
+ analyzer.shouldHaveExitValue(0);
+
+ Set<String> gcValidNames = new HashSet<>();
+ for (String n: gcNames) {
+ gcValidNames.add(n);
+ }
+ Set<String> gcValidCauses = new HashSet<>();
+ for (String n: gcCauses) {
+ gcValidCauses.add(n);
+ }
+
+ int total = 0;
+ for (RecordedEvent event : RecordingFile.readAllEvents(Paths.get(jfrFile))) {
+ total++;
+ System.out.println("Event: " + event);
+
+ final String name = Events.assertField(event, "name").notEmpty().getValue();
+ assertTrue(gcValidNames.contains(name), "GC name '" + name + "' not in the valid list" + gcValidNames);
+
+ final String cause = Events.assertField(event, "cause").notEmpty().getValue();
+ assertTrue(gcValidCauses.contains(cause), "GC cause '" + cause + "' not in the valid causes" + gcValidCauses);
+ }
+ assertGreaterThan(total, 0, "Expected at least one event");
+ }
+}