--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/test/jdk/jdk/jfr/api/recording/event/TestReEnableName.java Tue May 15 20:24:34 2018 +0200
@@ -0,0 +1,96 @@
+/*
+ * Copyright (c) 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.recording.event;
+
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+
+import jdk.jfr.Recording;
+import jdk.jfr.consumer.RecordedEvent;
+import jdk.test.lib.Asserts;
+import jdk.test.lib.jfr.EventNames;
+import jdk.test.lib.jfr.Events;
+
+/*
+ * @test
+ * @summary Enable/disable event by name during recording.
+ * @key jfr
+ * @library /test/lib
+ * @run main/othervm jdk.jfr.api.recording.event.TestReEnableName
+ */
+public class TestReEnableName {
+
+ public static void main(String[] args) throws Throwable {
+ testRecordingWithEnabledEvent(EventNames.FileWrite, false);
+ testRecordingWithEnabledEvent(EventNames.FileWrite, true);
+ }
+
+ // Loop and enable/disable events. Create events each loop.
+ // Verify we only get events created during enabled.
+ private static void testRecordingWithEnabledEvent(String eventname, boolean enabled) throws Exception {
+ System.out.println("Testing enabled=" + enabled + " for " + eventname);
+ final Path pathDisabled = Paths.get(".", "disabled.txt").toAbsolutePath();
+ final Path pathEnabled = Paths.get(".", "enabled.txt").toAbsolutePath();
+
+ Recording r = new Recording();
+ if (enabled) {
+ r.enable(eventname).withoutThreshold().withoutStackTrace();
+ } else {
+ r.disable(eventname).withoutThreshold().withoutStackTrace();
+ }
+ r.start();
+
+ // We should only get events for pathEnabled, not for pathDisabled.
+ int countExpectedEvents = 0;
+ for (int i = 0; i < 10; ++i) {
+ if (enabled) {
+ Files.write(pathEnabled, "E".getBytes());
+ ++countExpectedEvents;
+ r.disable(eventname);
+ } else {
+ Files.write(pathDisabled, "D".getBytes());
+ r.enable(eventname);
+ }
+ enabled = !enabled;
+ }
+ r.stop();
+
+ int countFoundEvents = 0;
+ for (RecordedEvent event : Events.fromRecording(r)) {
+ System.out.printf("Event %s%n", event);
+ Asserts.assertEquals(eventname, event.getEventType().getName(), "Wrong event type");
+ String path = Events.assertField(event, "path").getValue();
+ System.out.println(path);
+ if (pathEnabled.toString().equals(path)) {
+ ++countFoundEvents;
+ }
+ }
+ Asserts.assertGreaterThanOrEqual(countFoundEvents, countExpectedEvents, "Too few events found");
+
+ r.close();
+ }
+}