test/hotspot/jtreg/gc/epsilon/TestMemoryPools.java
branchepsilon-gc-branch
changeset 55767 8e22715afabc
child 56029 f14caf614061
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/hotspot/jtreg/gc/epsilon/TestMemoryPools.java	Mon Nov 06 18:53:38 2017 +0100
@@ -0,0 +1,64 @@
+/*
+ * Copyright (c) 2017 Red Hat, Inc. and/or its affiliates.
+ *
+ * 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 TestMemoryPools
+ * @key gc
+ * @summary Test JMX memory pools
+ * @modules java.base/jdk.internal.misc
+ *          java.management
+ * @run main/othervm -XX:+UnlockExperimentalVMOptions -XX:+IgnoreUnrecognizedVMOptions -XX:+UseEpsilonGC -Xmx1g -Xms1g TestMemoryPools
+ */
+
+import java.lang.management.*;
+import java.util.*;
+
+public class TestMemoryPools {
+
+    public static void main(String[] args) throws Exception {
+        List<MemoryManagerMXBean> mms = ManagementFactory.getMemoryManagerMXBeans();
+        if (mms == null) {
+            throw new RuntimeException("getMemoryManagerMXBeans is null");
+        }
+        if (mms.isEmpty()) {
+            throw new RuntimeException("getMemoryManagerMXBeans is empty");
+        }
+        for (MemoryManagerMXBean mmBean : mms) {
+            String[] names = mmBean.getMemoryPoolNames();
+            if (names == null) {
+                throw new RuntimeException("getMemoryPoolNames() is null");
+            }
+            if (names.length == 0) {
+                throw new RuntimeException("getMemoryPoolNames() is empty");
+            }
+            for (String name : names) {
+                if (name == null) {
+                    throw new RuntimeException("pool name is null");
+                }
+                if (name.length() == 0) {
+                    throw new RuntimeException("pool name is empty");
+                }
+            }
+        }
+    }
+}