1/* 2 * Copyright (c) 2004, 2013, 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 25package sun.jvm.hotspot.tools; 26 27import java.io.*; 28import java.util.*; 29import java.util.stream.*; 30import sun.jvm.hotspot.debugger.JVMDebugger; 31import sun.jvm.hotspot.runtime.*; 32 33public class JSnap extends Tool { 34 35 private boolean all; 36 37 public JSnap() { 38 super(); 39 } 40 41 public JSnap(JVMDebugger d) { 42 super(d); 43 } 44 45 public void run() { 46 final PrintStream out = System.out; 47 if (PerfMemory.initialized()) { 48 PerfDataPrologue prologue = PerfMemory.prologue(); 49 if (prologue.accessible()) { 50 PerfMemory.iterate(new PerfMemory.PerfDataEntryVisitor() { 51 public boolean visit(PerfDataEntry pde) { 52 if (all || pde.supported()) { 53 out.print(pde.name()); 54 out.print('='); 55 out.println(pde.valueAsString()); 56 } 57 // goto next entry 58 return true; 59 } 60 }); 61 } else { 62 out.println("PerfMemory is not accessible"); 63 } 64 } else { 65 out.println("PerfMemory is not initialized"); 66 } 67 } 68 69 @Override 70 protected void printFlagsUsage() { 71 System.out.println(" -a\tto print all performance counters"); 72 super.printFlagsUsage(); 73 } 74 75 public static void main(String[] args) { 76 JSnap js = new JSnap(); 77 js.all = Arrays.stream(args) 78 .anyMatch(s -> s.equals("-a")); 79 80 if (js.all) { 81 args = Arrays.stream(args) 82 .filter(s -> !s.equals("-a")) 83 .collect(Collectors.toList()) 84 .toArray(new String[0]); 85 } 86 87 js.execute(args); 88 } 89} 90