1 /* 2 * Copyright (c) 2014, 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 * @key nmt jcmd 27 * @library /testlibrary /testlibrary/whitebox 28 * @build ThreadedVirtualAllocTestType 29 * @run main/othervm/bootclasspath -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:NativeMemoryTracking=detail ThreadedVirtualAllocTestType 30 */ 31 32 import com.oracle.java.testlibrary.*; 33 import sun.hotspot.WhiteBox; 34 35 public class ThreadedVirtualAllocTestType { 36 public static long addr; 37 public static final WhiteBox wb = WhiteBox.getWhiteBox(); 38 public static final long commitSize = 128 * 1024; 39 public static final long reserveSize = 512 * 1024; 40 41 public static void main(String args[]) throws Exception { 42 OutputAnalyzer output; 43 44 String pid = Integer.toString(ProcessTools.getProcessId()); 45 ProcessBuilder pb = new ProcessBuilder(); 46 47 boolean has_nmt_detail = wb.NMTIsDetailSupported(); 48 if (has_nmt_detail) { 49 System.out.println("NMT detail support detected."); 50 } else { 51 System.out.println("NMT detail support not detected."); 52 } 53 54 Thread reserveThread = new Thread() { 55 public void run() { 56 addr = wb.NMTReserveMemory(reserveSize); 57 } 58 }; 59 reserveThread.start(); 60 reserveThread.join(); 61 62 mergeData(); 63 64 pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.native_memory", "detail"}); 65 output = new OutputAnalyzer(pb.start()); 66 output.shouldContain("Test (reserved=512KB, committed=0KB)"); 67 if (has_nmt_detail) { 68 output.shouldMatch("\\[0x[0]*" + Long.toHexString(addr) + " - 0x[0]*" + Long.toHexString(addr + reserveSize) + "\\] reserved 512KB for Test"); 69 } 70 71 Thread commitThread = new Thread() { 72 public void run() { 73 wb.NMTCommitMemory(addr, commitSize); 74 } 75 }; 76 commitThread.start(); 77 commitThread.join(); 78 79 mergeData(); 80 81 output = new OutputAnalyzer(pb.start()); 82 output.shouldContain("Test (reserved=512KB, committed=128KB)"); 83 if (has_nmt_detail) { 84 output.shouldMatch("\\[0x[0]*" + Long.toHexString(addr) + " - 0x[0]*" + Long.toHexString(addr + commitSize) + "\\] committed 128KB"); 85 } 86 87 Thread uncommitThread = new Thread() { 88 public void run() { 89 wb.NMTUncommitMemory(addr, commitSize); 90 } 91 }; 92 uncommitThread.start(); 93 uncommitThread.join(); 94 95 mergeData(); 96 97 output = new OutputAnalyzer(pb.start()); 98 output.shouldContain("Test (reserved=512KB, committed=0KB)"); 99 output.shouldNotMatch("\\[0x[0]*" + Long.toHexString(addr) + " - 0x[0]*" + Long.toHexString(addr + commitSize) + "\\] committed"); 100 101 Thread releaseThread = new Thread() { 102 public void run() { 103 wb.NMTReleaseMemory(addr, reserveSize); 104 } 105 }; 106 releaseThread.start(); 107 releaseThread.join(); 108 109 mergeData(); 110 111 output = new OutputAnalyzer(pb.start()); 112 output.shouldNotContain("Test (reserved="); 113 output.shouldNotContain("\\[0x[0]*" + Long.toHexString(addr) + " - 0x[0]*" + Long.toHexString(addr + reserveSize) + "\\] reserved"); 114 } 115 116 public static void mergeData() throws Exception { 117 // Use WB API to ensure that all data has been merged before we continue 118 if (!wb.NMTWaitForDataMerge()) { 119 throw new Exception("Call to WB API NMTWaitForDataMerge() failed"); 120 } 121 } 122 }