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7977
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1 /*
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2 * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 */
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23
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24 /*
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25 * @test
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26 * @summary Test consistency of NMT by leaking a few select allocations of the Test type and then verify visibility with jcmd
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27 * @key nmt jcmd
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28 * @library /testlibrary
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29 * @run compile -J-XX:+UnlockDiagnosticVMOptions -J-XX:+WhiteBoxAPI AllocTestType.java
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30 * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:NativeMemoryTracking=detail AllocTestType
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31 */
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32
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33 import com.oracle.java.testlibrary.*;
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34 import sun.hotspot.WhiteBox;
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35
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36 public class AllocTestType {
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37
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38 public static void main(String args[]) throws Exception {
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39 OutputAnalyzer output;
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40
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41 // Grab my own PID
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42 String pid = Integer.toString(ProcessTools.getProcessId());
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43 ProcessBuilder pb = new ProcessBuilder();
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44
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45 // Use WB API to alloc with the mtTest type
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46 if (!WhiteBox.getWhiteBox().NMTAllocTest()) {
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47 throw new Exception("Call to WB API NMTAllocTest() failed");
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48 }
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49
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50 // Use WB API to ensure that all data has been merged before we continue
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51 if (!WhiteBox.getWhiteBox().NMTWaitForDataMerge()) {
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52 throw new Exception("Call to WB API NMTWaitForDataMerge() failed");
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53 }
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54
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55 // Run 'jcmd <pid> VM.native_memory summary'
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56 pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.native_memory", "summary"});
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57 output = new OutputAnalyzer(pb.start());
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58 output.shouldContain("Test (reserved=512KB, committed=512KB)");
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59
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60 // Free the memory allocated by NMTAllocTest
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61 if (!WhiteBox.getWhiteBox().NMTFreeTestMemory()) {
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62 throw new Exception("Call to WB API NMTFreeTestMemory() failed");
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63 }
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64
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65 // Use WB API to ensure that all data has been merged before we continue
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66 if (!WhiteBox.getWhiteBox().NMTWaitForDataMerge()) {
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67 throw new Exception("Call to WB API NMTWaitForDataMerge() failed");
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68 }
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69 output = new OutputAnalyzer(pb.start());
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70 output.shouldNotContain("Test (reserved=");
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71 }
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72 }
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