1 /* 2 * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 /** 25 * @test 26 * @bug 8208499 27 * @summary NMT should report safepoint polling page(s) 28 * @key nmt jcmd 29 * @library /test/lib 30 * @modules java.base/jdk.internal.misc 31 * java.management 32 * @comment On ppc, with UseSIGTRAP on, no polling pages are used, but trap instructions instead. 33 * @run main/othervm -XX:-UseSIGTRAP -XX:+IgnoreUnrecognizedVMOptions -Xbootclasspath/a:. -XX:NativeMemoryTracking=summary -XX:+ThreadLocalHandshakes SafepointPollingPages 34 * @run main/othervm -XX:-UseSIGTRAP -XX:+IgnoreUnrecognizedVMOptions -Xbootclasspath/a:. -XX:NativeMemoryTracking=summary -XX:-ThreadLocalHandshakes SafepointPollingPages 35 */ 36 37 import jdk.test.lib.process.ProcessTools; 38 import jdk.test.lib.process.OutputAnalyzer; 39 import jdk.test.lib.JDKToolFinder; 40 import jdk.internal.misc.Unsafe; 41 42 public class SafepointPollingPages { 43 public static void main(String args[]) throws Exception { 44 OutputAnalyzer output; 45 46 // Grab my own PID 47 String pid = Long.toString(ProcessTools.getProcessId()); 48 ProcessBuilder pb = new ProcessBuilder(); 49 50 // Run 'jcmd <pid> VM.native_memory summary' 51 pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.native_memory", "summary"}); 52 output = new OutputAnalyzer(pb.start()); 53 output.shouldContain("Safepoint (reserved="); 54 } 55 } 56