diff -r 746229cc1ab0 -r cc29d7717e3a test/hotspot/jtreg/vmTestbase/nsk/monitoring/RuntimeMXBean/RuntimeMXBean001/RuntimeMXBean001.java --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/test/hotspot/jtreg/vmTestbase/nsk/monitoring/RuntimeMXBean/RuntimeMXBean001/RuntimeMXBean001.java Wed May 02 16:43:56 2018 -0700 @@ -0,0 +1,121 @@ +/* + * Copyright (c) 2007, 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. + * + * 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. + */ + + +/* + * @test + * + * @summary converted from VM Testbase nsk/monitoring/RuntimeMXBean/RuntimeMXBean001. + * VM Testbase keywords: [quick, monitoring] + * + * @library /vmTestbase + * /test/lib + * @run driver jdk.test.lib.FileInstaller . . + * @run main/othervm + * nsk.monitoring.RuntimeMXBean.RuntimeMXBean001.RuntimeMXBean001 + * -testMode=directly + */ + +package nsk.monitoring.RuntimeMXBean.RuntimeMXBean001; + +import nsk.share.*; +import nsk.share.test.*; +import nsk.monitoring.share.*; +import java.lang.management.*; + +/** + * Test functions of RuntimeMXBean. + * + * + * Checks that values returned by getStartTime() and getUptime() + * measure actual uptime well enough, i.e. + * - start time does not change with time + * - start time + uptime is approximately current time + */ +public class RuntimeMXBean001 extends MonitoringTestBase implements Initializable { + private static final long NANO_MS = 1000000; + + private RuntimeMXBean runtime; + private int iterations = 10; + private long maxDiff = 5000; + private int fail_count = 0; + + public void initialize() { + runtime = monitoringFactory.getRuntimeMXBean(); + } + + private static final long getMillis() { + return System.nanoTime() / NANO_MS; + } + + private void checkTimes(long startTime, long upTime, String msg) { + if (startTime <= 0) + throw new TestFailure("Invalid start time: " + startTime); + if (upTime <= 0) + throw new TestFailure("Invalid uptime: " + upTime); + } + + private void testUptimeOne(long sleepTime) { + long startTime1 = runtime.getStartTime(); + long uptime1 = runtime.getUptime(); + long time1 = getMillis(); + log.info("startTime: " + startTime1 + ", uptime1: " + uptime1 + ", time1: " + time1); + checkTimes(startTime1, uptime1, "Before sleep"); + try { + Thread.sleep(sleepTime); + } catch (InterruptedException e) { + throw new TestFailure("Sleep was interrupted", e); + } + long startTime2 = runtime.getStartTime(); + long uptime2 = runtime.getUptime(); + long time2 = getMillis(); + checkTimes(startTime2, uptime2, "After sleep"); + + if (startTime1 != startTime2) + throw new TestFailure("Start time before sleep: " + startTime1 + " start time after sleep: " + startTime2); + if (uptime2 < uptime1) + throw new TestFailure("Uptime before sleep: " + uptime1 + " uptime after sleep: " + uptime2); + + long utDiff = (uptime2 - uptime1); + long tDiff = (time2 - time1); + long flowDiff = Math.abs(utDiff -tDiff); + if (flowDiff > maxDiff) { + throw new TestFailure("Difference between timeflow of uptime and current time is too big: " + flowDiff + ", expecting at most " + maxDiff); + } + } + + private void testUptime() { + for (int i = 0; i < iterations; ++i) { + log.info("Iteration: " + i); + testUptimeOne(LocalRandom.randomPauseTime()); + } + } + + public void run() { + testUptime(); + } + + public static void main(String[] args) { + Monitoring.runTest(new RuntimeMXBean001(), args); + } +}