diff -r 746229cc1ab0 -r cc29d7717e3a test/hotspot/jtreg/vmTestbase/nsk/monitoring/stress/lowmem/lowmem007/TestDescription.java --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/test/hotspot/jtreg/vmTestbase/nsk/monitoring/stress/lowmem/lowmem007/TestDescription.java Wed May 02 16:43:56 2018 -0700 @@ -0,0 +1,62 @@ +/* + * Copyright (c) 2017, 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 + * @key stress + * + * @summary converted from VM Testbase nsk/monitoring/stress/lowmem/lowmem007. + * VM Testbase keywords: [stress, monitoring, nonconcurrent] + * VM Testbase readme: + * DESCRIPTION + * The test checks that enabling of low memory detection does not lead to + * unexpected behaviour: crashes of the VM and undocumented exceptions. + * The test enables low memory detection: it adds NotificationListener + * to the MemoryMBean for notification mechanism of monitoring, or starts + * a special thread for polling mechanism. After that, it starts eating memory. + * Objects are allocated, if "heap" memory is tested; classes are loaded, + * if "nonheap" memory is tested; objects are allocated and classes are + * loaded, if "mixed" memory is tested. + * Notifications are received by the listener in notification mechanism and + * crossing of thresholds are detected in polling mechanism. The thresholds + * are updated as soon as notification is received, or crossing of a threshold + * is detected. + * The test also checks stderr to be empty. Otherwise, it fails. The test + * exits as soon as OutOfMemoryError is caught (if heap memory is tested) or + * all classes are loaded (if nonheap or mixed memory is tested). + * All options of the test are specified in *.cfg file. this particular test + * - performs directly access to the MBeans' methods; + * - fills both heap and nonheap memory; + * - implements notifcation mechanism of monitoring; + * - tests usage thresholds. + * COMMENTS + * Fixed the bug + * 4969687 TEST_BUG: The spec is updated accoring to 4956978, 4957000, 4959889 + * + * @library /vmTestbase + * /test/lib + * @run driver jdk.test.lib.FileInstaller . . + * @run main/othervm -XX:-UseGCOverheadLimit nsk.monitoring.stress.lowmem.lowmem001 -memory=mixed + */ +