/*+
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 * Copyright (c) 2017, 2018, 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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/*+
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 * @test+
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 * @key stress+
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 *+
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 * @summary converted from VM Testbase nsk/monitoring/stress/lowmem/lowmem025.+
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 * VM Testbase keywords: [stress, monitoring, nonconcurrent]+
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 * VM Testbase readme:+
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 * DESCRIPTION+
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 *     The test checks that enabling of low memory detection does not lead to+
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 *     unexpected behaviour: crashes of the VM and undocumented exceptions.+
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 *     The test enables low memory detection: it adds NotificationListener+
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 *     to the MemoryMBean for notification mechanism of monitoring, or starts+
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 *     a special thread for polling mechanism. After that, it starts eating memory.+
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 *     Objects are allocated, if "heap" memory is tested; classes are loaded,+
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 *     if "nonheap" memory is tested; objects are allocated and classes are+
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 *     loaded, if "mixed" memory is tested.+
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 *     Notifications are received by the listener in notification mechanism and+
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 *     crossing of thresholds are detected in polling mechanism. The thresholds+
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 *     are updated as soon as notification is received, or crossing of a threshold+
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 *     is detected.+
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 *     The test also checks stderr to be empty. Otherwise, it fails. The test+
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 *     exits as soon as OutOfMemoryError is caught (if heap memory is tested) or+
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 *     all classes are loaded (if nonheap or mixed memory is tested).+
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 *     All options of the test are specified in *.cfg file. this particular test+
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 *         - performs directly access to the MBeans' methods;+
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 *         - fills mixed memory;+
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 *         - implements notifcation mechanism of monitoring;+
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 *         - tests collection usage thresholds.+
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 * COMMENTS+
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 *     Fixed the bug+
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 *     4969687 TEST_BUG: The spec is updated accoring to 4956978, 4957000, 4959889+
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 *+
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 * @library /vmTestbase+
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 *          /test/lib+
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 * @run driver jdk.test.lib.FileInstaller . .+
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 * @run main/othervm+
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 *      -XX:-UseGCOverheadLimit+
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 *      nsk.monitoring.stress.lowmem.lowmem001+
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 *      -testMode=directly+
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 *      -memory=mixed+
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 *      -monitoring=notification+
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 *      -threshold=collection+
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 */+
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+
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