1 /*
   2  * Copyright (c) 2002, 2017, 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 package sun.jvm.hotspot.tools;
  26 
  27 import sun.jvm.hotspot.debugger.*;
  28 import sun.jvm.hotspot.runtime.*;
  29 import sun.jvm.hotspot.oops.*;
  30 
  31 /** Traverses and prints the stack traces for all Java threads in the
  32  * remote VM */
  33 public class StackTrace extends Tool {
  34     // in non-verbose mode pc, sp and Method* are not printed
  35     public StackTrace(boolean v, boolean concurrentLocks) {
  36         this.verbose = v;
  37         this.concurrentLocks = concurrentLocks;
  38     }
  39 
  40     public StackTrace() {
  41         this(true, true);
  42     }
  43 
  44     public void run() {
  45         run(System.out);
  46     }
  47 
  48     public StackTrace(JVMDebugger d) {
  49         super(d);
  50     }
  51 
  52     public StackTrace(JVMDebugger d, boolean v, boolean concurrentLocks) {
  53         super(d);
  54         this.verbose = v;
  55         this.concurrentLocks = concurrentLocks;
  56     }
  57 
  58     public void run(java.io.PrintStream tty) {
  59         // Ready to go with the database...
  60         try {
  61             // print deadlock information before stack trace
  62             DeadlockDetector.print(tty);
  63         } catch (Exception exp) {
  64             exp.printStackTrace();
  65             tty.println("Can't print deadlocks:" + exp.getMessage());
  66         }
  67 
  68         try {
  69             ConcurrentLocksPrinter concLocksPrinter = null;
  70             if (concurrentLocks) {
  71                 concLocksPrinter = new ConcurrentLocksPrinter();
  72             }
  73             Threads threads = VM.getVM().getThreads();
  74             int i = 1;
  75             for (JavaThread cur = threads.first(); cur != null; cur = cur.next(), i++) {
  76                 if (cur.isJavaThread()) {
  77                     cur.printThreadInfoOn(tty);
  78                     try {
  79                         int count = 0;
  80 
  81                         for (JavaVFrame vf = cur.getLastJavaVFrameDbg(); vf != null; vf = vf.javaSender()) {
  82                             Method method = vf.getMethod();
  83                             tty.print(" - " + method.externalNameAndSignature() +
  84                             " @bci=" + vf.getBCI());
  85 
  86                             int lineNumber = method.getLineNumberFromBCI(vf.getBCI());
  87                             if (lineNumber != -1) {
  88                                 tty.print(", line=" + lineNumber);
  89                             }
  90 
  91                             if (verbose) {
  92                                 Address pc = vf.getFrame().getPC();
  93                                 if (pc != null) {
  94                                     tty.print(", pc=" + pc);
  95                                 }
  96 
  97                                 tty.print(", Method*=" + method.getAddress());
  98                             }
  99 
 100                             if (vf.isCompiledFrame()) {
 101                                 tty.print(" (Compiled frame");
 102                                 if (vf.isDeoptimized()) {
 103                                   tty.print(" [deoptimized]");
 104                                 }
 105                             }
 106                             if (vf.isInterpretedFrame()) {
 107                                 tty.print(" (Interpreted frame");
 108                             }
 109                             if (vf.mayBeImpreciseDbg()) {
 110                                 tty.print("; information may be imprecise");
 111                             }
 112 
 113                             tty.println(")");
 114                             vf.printLockInfo(tty, count++);
 115                         }
 116                     } catch (Exception e) {
 117                         tty.println("Error occurred during stack walking:");
 118                         e.printStackTrace();
 119                     }
 120                     tty.println();
 121                     if (concurrentLocks) {
 122                         concLocksPrinter.print(cur, tty);
 123                     }
 124                     tty.println();
 125               }
 126           }
 127       }
 128       catch (AddressException e) {
 129         System.err.println("Error accessing address 0x" + Long.toHexString(e.getAddress()));
 130         e.printStackTrace();
 131       }
 132    }
 133 
 134    public static void main(String[] args) {
 135       StackTrace st = new StackTrace();
 136       st.execute(args);
 137    }
 138 
 139    private boolean verbose;
 140    private boolean concurrentLocks;
 141 }
--- EOF ---