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/*
* Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2018, Google 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.
*/
package MyPackage;
/**
* @test
* @build Frame HeapMonitor
* @requires vm.jvmti
* @summary Verifies the JVMTI Heap Monitor events are only sent after enabling.
* @compile HeapMonitorStatSimpleTest.java
* @run main/othervm/native -agentlib:HeapMonitorTest MyPackage.HeapMonitorStatSimpleTest
*/
public class HeapMonitorStatSimpleTest {
private native static int areSamplingStatisticsZero();
public static void main(String[] args) {
HeapMonitor.allocate();
if (!HeapMonitor.eventStorageIsEmpty()) {
throw new RuntimeException("Statistics should be null to begin with.");
}
HeapMonitor.enableSamplingEvents();
HeapMonitor.allocate();
if (HeapMonitor.eventStorageIsEmpty()) {
throw new RuntimeException("Statistics should not be null now.");
}
}
}
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