1 /* 2 * Copyright (c) 2013, 2015, 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 * @summary Test Reserve/Commit/Uncommit/Release of virtual memory and that we track it correctly 27 * @key nmt jcmd 28 * @library /testlibrary /../../test/lib 29 * @modules java.base/sun.misc 30 * java.management 31 * @build VirtualAllocTestType 32 * @run main ClassFileInstaller sun.hotspot.WhiteBox 33 * sun.hotspot.WhiteBox$WhiteBoxPermission 34 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:NativeMemoryTracking=detail VirtualAllocTestType 35 */ 36 37 import jdk.test.lib.*; 38 import sun.hotspot.WhiteBox; 39 40 public class VirtualAllocTestType { 41 42 public static WhiteBox wb = WhiteBox.getWhiteBox(); 43 public static void main(String args[]) throws Exception { 44 OutputAnalyzer output; 45 long commitSize = 128 * 1024; 46 long reserveSize = 256 * 1024; 47 long addr; 48 49 String pid = Integer.toString(ProcessTools.getProcessId()); 50 ProcessBuilder pb = new ProcessBuilder(); 51 52 addr = wb.NMTReserveMemory(reserveSize); 53 pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.native_memory", "detail"}); 54 55 output = new OutputAnalyzer(pb.start()); 56 output.shouldContain("Test (reserved=256KB, committed=0KB)"); 57 output.shouldMatch("\\[0x[0]*" + Long.toHexString(addr) + " - 0x[0]*" + Long.toHexString(addr + reserveSize) + "\\] reserved 256KB for Test"); 58 59 wb.NMTCommitMemory(addr, commitSize); 60 61 62 output = new OutputAnalyzer(pb.start()); 63 output.shouldContain("Test (reserved=256KB, committed=128KB)"); 64 output.shouldMatch("\\[0x[0]*" + Long.toHexString(addr) + " - 0x[0]*" + Long.toHexString(addr + commitSize) + "\\] committed 128KB"); 65 66 wb.NMTUncommitMemory(addr, commitSize); 67 68 69 output = new OutputAnalyzer(pb.start()); 70 output.shouldContain("Test (reserved=256KB, committed=0KB)"); 71 output.shouldNotMatch("\\[0x[0]*" + Long.toHexString(addr) + " - 0x[0]*" + Long.toHexString(addr + commitSize) + "\\] committed"); 72 73 wb.NMTReleaseMemory(addr, reserveSize); 74 75 output = new OutputAnalyzer(pb.start()); 76 output.shouldNotContain("Test (reserved="); 77 output.shouldNotMatch("\\[0x[0]*" + Long.toHexString(addr) + " - 0x[0]*" + Long.toHexString(addr + reserveSize) + "\\] reserved"); 78 } 79 }