--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/test/jdk/jdk/jfr/api/event/TestShouldCommit.java Tue May 15 20:24:34 2018 +0200
@@ -0,0 +1,194 @@
+/*
+ * 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.event;
+
+import java.time.Duration;
+
+import jdk.jfr.Event;
+import jdk.jfr.Recording;
+import jdk.test.lib.Asserts;
+
+/*
+ * @test
+ * @summary Test enable/disable event and verify recording has expected events.
+ * @key jfr
+ * @library /test/lib
+ * @run main/othervm -Xlog:jfr+event+setting=trace jdk.jfr.api.event.TestShouldCommit
+ */
+
+public class TestShouldCommit {
+
+ public static void main(String[] args) throws Exception {
+ Recording rA = new Recording();
+
+ verifyShouldCommitFalse(); // No active recordings
+
+ rA.start();
+ rA.enable(MyEvent.class).withoutThreshold(); // recA=all
+ verifyShouldCommitTrue();
+
+ setThreshold(rA, 100); // recA=100
+ verifyThreshold(100);
+
+ setThreshold(rA, 200); // recA=200
+ verifyThreshold(200);
+
+ Recording rB = new Recording();
+ verifyThreshold(200); // recA=200, recB=not started
+
+ rB.start();
+ verifyThreshold(200); // recA=200, recB=not specified, settings from recA is used.
+
+ setThreshold(rB, 100); // recA=200, recB=100
+ verifyThreshold(100);
+
+ setThreshold(rB, 300); // recA=200, recB=300
+ verifyThreshold(200);
+
+ rA.disable(MyEvent.class); // recA=disabled, recB=300
+
+ verifyThreshold(300);
+
+ rB.disable(MyEvent.class); // recA=disabled, recB=disabled
+ verifyShouldCommitFalse();
+
+ setThreshold(rA, 200); // recA=200, recB=disabled
+ verifyThreshold(200);
+
+ rB.enable(MyEvent.class).withoutThreshold(); // recA=200, recB=all
+ verifyShouldCommitTrue();
+
+ setThreshold(rB, 100); // recA=200, recB=100
+ verifyThreshold(100);
+
+ rB.stop(); // recA=200, recB=stopped
+ verifyThreshold(200);
+
+ rA.stop(); // recA=stopped, recB=stopped
+ verifyShouldCommitFalse();
+
+ rA.close();
+ rB.close();
+
+ verifyShouldCommitFalse();
+ }
+
+ private static void setThreshold(Recording r, long millis) {
+ r.enable(MyEvent.class).withThreshold(Duration.ofMillis(millis));
+ }
+
+ private static void verifyThreshold(long threshold) throws Exception {
+ // Create 2 events, with different sleep time between begin() and end()
+ // First event ends just before threshold, the other just after.
+ verifyThreshold(threshold-5, threshold);
+ verifyThreshold(threshold+5, threshold);
+ }
+
+ private static void verifyThreshold(long sleepMs, long thresholdMs) throws Exception {
+ MyEvent event = new MyEvent();
+
+ long beforeStartNanos = System.nanoTime();
+ event.begin();
+ long afterStartNanos = System.nanoTime();
+
+ Thread.sleep(sleepMs);
+
+ long beforeStopNanos = System.nanoTime();
+ event.end();
+ long afterStopNanos = System.nanoTime();
+
+ boolean actualShouldCommit = event.shouldCommit();
+
+ final long safetyMarginNanos = 2000000; // Allow an error of 2 ms. May have to be tuned.
+
+ //Duration of event has been at least minDurationMicros
+ long minDurationMicros = (beforeStopNanos - afterStartNanos - safetyMarginNanos) / 1000;
+ //Duration of event has been at most maxDurationMicros
+ long maxDurationMicros = (afterStopNanos - beforeStartNanos + safetyMarginNanos) / 1000;
+ Asserts.assertLessThanOrEqual(minDurationMicros, maxDurationMicros, "Wrong min/max duration. Test error.");
+
+ long thresholdMicros = thresholdMs * 1000;
+ Boolean shouldCommit = null;
+ if (minDurationMicros > thresholdMicros) {
+ shouldCommit = new Boolean(true); // shouldCommit() must be true
+ } else if (maxDurationMicros < thresholdMicros) {
+ shouldCommit = new Boolean(false); // shouldCommit() must be false
+ } else {
+ // Too close to call. No checks are done since we are not sure of expected shouldCommit().
+ }
+
+ System.out.printf(
+ "threshold=%d, duration=[%d-%d], shouldCommit()=%b, expected=%s%n",
+ thresholdMicros, minDurationMicros, maxDurationMicros, actualShouldCommit,
+ (shouldCommit!=null ? shouldCommit : "too close to call"));
+
+ try {
+ if (shouldCommit != null) {
+ Asserts.assertEquals(shouldCommit.booleanValue(), actualShouldCommit, "Wrong shouldCommit()");
+ }
+ } catch (Exception e) {
+ System.out.println("Unexpected value of shouldCommit(). Searching for active threshold...");
+ searchThreshold(thresholdMs, 2000+thresholdMs);
+ throw e;
+ }
+ }
+
+ // Sleeps until shouldCommit() is true, or give up. Used for logging.
+ private static void searchThreshold(long expectedMs, long maxMs) throws Exception {
+ long start = System.nanoTime();
+ long stop = start + maxMs * 1000000;
+
+ MyEvent event = new MyEvent();
+ event.begin();
+ event.end();
+
+ while (!event.shouldCommit() && System.nanoTime() < stop) {
+ Thread.sleep(1);
+ event.end();
+ }
+ long durationMicros = (System.nanoTime() - start) / 1000;
+ long expectedMicros = expectedMs * 1000;
+ System.out.printf("shouldCommit()=%b after %,d ms, expected %,d%n", event.shouldCommit(), durationMicros, expectedMicros);
+ }
+
+ private static void verifyShouldCommitFalse() {
+ MyEvent event = new MyEvent();
+ event.begin();
+ event.end();
+ Asserts.assertFalse(event.shouldCommit(), "shouldCommit() expected false");
+ }
+
+ private static void verifyShouldCommitTrue() {
+ MyEvent event = new MyEvent();
+ event.begin();
+ event.end();
+ Asserts.assertTrue(event.shouldCommit(), "shouldCommit() expected true");
+ }
+
+ private static class MyEvent extends Event {
+ }
+
+}