test/hotspot/jtreg/runtime/NMT/ReleaseNoCommit.java
changeset 47216 71c04702a3d5
parent 40631 ed82623d7831
child 48791 6e079ff6c83c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/hotspot/jtreg/runtime/NMT/ReleaseNoCommit.java	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,66 @@
+/*
+ * Copyright (c) 2014, 2016, 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
+ * @summary Release uncommitted memory and make sure NMT handles it correctly
+ * @key nmt regression
+ * @library /test/lib
+ * @modules java.base/jdk.internal.misc
+ *          java.management
+ * @build sun.hotspot.WhiteBox
+ * @run main ClassFileInstaller sun.hotspot.WhiteBox
+ * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:NativeMemoryTracking=summary ReleaseNoCommit
+ */
+
+import jdk.test.lib.JDKToolFinder;
+import jdk.test.lib.process.OutputAnalyzer;
+import jdk.test.lib.process.ProcessTools;
+
+import sun.hotspot.WhiteBox;
+
+public class ReleaseNoCommit {
+
+    public static void main(String args[]) throws Exception {
+        WhiteBox wb = WhiteBox.getWhiteBox();
+        long reserveSize = 256 * 1024;
+        long addr;
+
+        ProcessBuilder pb = new ProcessBuilder();
+        OutputAnalyzer output;
+        // Grab my own PID
+        String pid = Long.toString(ProcessTools.getProcessId());
+
+        addr = wb.NMTReserveMemory(reserveSize);
+        // Check for reserved
+        pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.native_memory", "scale=KB"});
+        output = new OutputAnalyzer(pb.start());
+        output.shouldContain(" Test (reserved=256KB, committed=0KB)");
+
+        wb.NMTReleaseMemory(addr, reserveSize);
+
+        pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.native_memory", "scale=KB"});
+        output = new OutputAnalyzer(pb.start());
+        output.shouldNotContain("Test (reserved=");
+    }
+}