1 #!/bin/sh
   2 
   3 #
   4 # Copyright (c) 2005, 2015 Oracle and/or its affiliates. All rights reserved.
   5 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   6 #
   7 # This code is free software; you can redistribute it and/or modify it
   8 # under the terms of the GNU General Public License version 2 only, as
   9 # published by the Free Software Foundation.
  10 #
  11 # This code is distributed in the hope that it will be useful, but WITHOUT
  12 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13 # FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14 # version 2 for more details (a copy is included in the LICENSE file that
  15 # accompanied this code).
  16 #
  17 # You should have received a copy of the GNU General Public License version
  18 # 2 along with this work; if not, write to the Free Software Foundation,
  19 # Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20 #
  21 # Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22 # or visit www.oracle.com if you need additional information or have any
  23 # questions.
  24 #
  25 
  26 # @test
  27 # @bug 6224859
  28 # @key intermittent
  29 # @summary JDWP: Mixing application suspends and debugger suspends can cause hangs
  30 # @author Jim Holmlund
  31 #
  32 # @run build TestScaffold VMConnection TargetListener TargetAdapter
  33 # @run shell MixedSuspendTest.sh
  34 
  35 classname=MixedSuspendTarg
  36 
  37 createJavaFile()
  38 {
  39     cat <<EOF > $classname.java.1
  40 
  41 import java.util.*;
  42 
  43 public class $classname extends Thread {
  44 
  45     static volatile boolean started = true;
  46     static String lock = "startLock";
  47 
  48     public static void main(String[] args){
  49         System.out.println("Howdy from MixedSuspendTarg");
  50 
  51         MixedSuspendTarg mytarg = new MixedSuspendTarg();
  52 
  53         synchronized(lock) {
  54             mytarg.start();
  55             try {
  56                 lock.wait();
  57             } catch(InterruptedException ee) {
  58             }
  59         }
  60         mytarg.suspend();
  61         bkpt();
  62         System.out.println("Debuggee: resuming thread");
  63 
  64         // If the bug occurs, this resume hangs in the back-end
  65         mytarg.resume();
  66         System.out.println("Debuggee: resumed thread");
  67         synchronized(lock) {
  68             started = false;
  69         }
  70         System.out.println("Debuggee: exitting, started = " + started);
  71     }
  72 
  73     public void run() {
  74         synchronized(lock) {
  75             lock.notifyAll();
  76         }
  77         while (true) {
  78             synchronized(lock) {
  79                 if (!started) {
  80                     break;
  81                 }
  82                 int i = 0;
  83             }
  84         }
  85 
  86         System.out.println("Debuggee: end of thread");
  87     }
  88 
  89     static void bkpt() {
  90         //System.out.println("bkpt reached, thread = " + this.getName());
  91         int i = 0;   // @1 breakpoint
  92     }
  93 }
  94 
  95 EOF
  96 }
  97 
  98 dojdbCmds()
  99 {
 100     setBkpts @1
 101     runToBkpt @1
 102     cmd allowExit cont
 103 }
 104 
 105 
 106 mysetup()
 107 {
 108     if [ -z "$TESTSRC" ] ; then
 109         TESTSRC=.
 110     fi
 111 
 112     for ii in . $TESTSRC $TESTSRC/.. ; do
 113         if [ -r "$ii/ShellScaffold.sh" ] ; then
 114             . $ii/ShellScaffold.sh
 115             break
 116         fi
 117     done
 118 }
 119 
 120 # You could replace this next line with the contents
 121 # of ShellScaffold.sh and this script will run just the same.
 122 mysetup
 123 
 124 runit
 125 ## This test fails by timing out.
 126 pass