author | akulyakh |
Thu, 21 Jan 2016 14:17:49 +0300 | |
changeset 35535 | 82db90419728 |
parent 35493 | 863fb33f9940 |
child 35945 | f532c5c62540 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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|
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/* |
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* @test |
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* @summary Test checks output displayed with jstat -gccause. |
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* Test scenario: |
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* test several times provokes garbage collection in the debuggee application and after each garbage |
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* collection runs jstat. jstat should show that after garbage collection number of GC events and garbage |
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* collection time increase. |
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* @library /test/lib/share/classes |
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* @library ../share |
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* @ignore 8147848 |
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* @build common.* |
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* @build utils.* |
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* |
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* @run main/othervm -XX:+UsePerfData GcCauseTest01 |
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*/ |
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import utils.*; |
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public class GcCauseTest01 { |
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public static void main(String[] args) throws Exception { |
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// We will be running "jstat -gc" tool |
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JstatGcCauseTool jstatGcTool = new JstatGcCauseTool(ProcessHandle.current().getPid()); |
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// Run once and get the results asserting that they are reasonable |
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JstatGcCauseResults measurement1 = jstatGcTool.measure(); |
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measurement1.assertConsistency(); |
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GcProvoker gcProvoker = GcProvoker.createGcProvoker(); |
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// Provoke GC then run the tool again and get the results asserting that they are reasonable |
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gcProvoker.provokeGc(); |
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JstatGcCauseResults measurement2 = jstatGcTool.measure(); |
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measurement2.assertConsistency(); |
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// Assert the increase in GC events and time between the measurements |
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JstatResults.assertGCEventsIncreased(measurement1, measurement2); |
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JstatResults.assertGCTimeIncreased(measurement1, measurement2); |
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// Provoke GC 3rd time then run the tool 3rd time twice and get the results |
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// asserting that they are reasonable |
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gcProvoker.provokeGc(); |
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JstatGcCauseResults measurement3 = jstatGcTool.measure(); |
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measurement3.assertConsistency(); |
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// Assert the increase in GC events and time between the measurements |
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JstatResults.assertGCEventsIncreased(measurement2, measurement3); |
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JstatResults.assertGCTimeIncreased(measurement2, measurement3); |
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} |
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} |