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 #  @summary JDWP: Mixing application suspends and debugger suspends can cause hangs
  29 # 
  30 #  @author Jim Holmlund
  31 # 
  32 #  @modules jdk.jdi
  33 #  @run build TestScaffold VMConnection TargetListener TargetAdapter
  34 #  @run shell MixedSuspendTest.sh
  35 
  36 classname=MixedSuspendTarg
  37 
  38 createJavaFile()
  39 {
  40     cat <<EOF > $classname.java.1
  41 
  42 import java.util.*;
  43 
  44 public class $classname extends Thread {
  45 
  46     static volatile boolean started = true;
  47     static String lock = "startLock";
  48 
  49     public static void main(String[] args){
  50         System.out.println("Howdy from MixedSuspendTarg");
  51 
  52         MixedSuspendTarg mytarg = new MixedSuspendTarg();
  53 
  54         synchronized(lock) {
  55             mytarg.start();
  56             try {
  57                 lock.wait();
  58             } catch(InterruptedException ee) {
  59             }
  60         }
  61         mytarg.suspend();
  62         bkpt();
  63         System.out.println("Debuggee: resuming thread");
  64 
  65         // If the bug occurs, this resume hangs in the back-end
  66         mytarg.resume();
  67         System.out.println("Debuggee: resumed thread");
  68         synchronized(lock) {
  69             started = false;
  70         }
  71         System.out.println("Debuggee: exitting, started = " + started);
  72     }
  73 
  74     public void run() {
  75         synchronized(lock) {
  76             lock.notifyAll();
  77         }
  78         while (true) {
  79             synchronized(lock) {
  80                 if (!started) {
  81                     break;
  82                 }
  83                 int i = 0;
  84             }
  85         }
  86             
  87         System.out.println("Debuggee: end of thread");
  88     }
  89 
  90     static void bkpt() {
  91         //System.out.println("bkpt reached, thread = " + this.getName());
  92         int i = 0;   // @1 breakpoint
  93     }
  94 }
  95 
  96 EOF
  97 }
  98 
  99 dojdbCmds()
 100 {
 101     setBkpts @1
 102     runToBkpt @1
 103     cmd allowExit cont
 104 }
 105 
 106 
 107 mysetup()
 108 {
 109     if [ -z "$TESTSRC" ] ; then
 110         TESTSRC=.
 111     fi
 112 
 113     for ii in . $TESTSRC $TESTSRC/.. ; do
 114         if [ -r "$ii/ShellScaffold.sh" ] ; then
 115             . $ii/ShellScaffold.sh 
 116             break
 117         fi
 118     done
 119 }
 120 
 121 # You could replace this next line with the contents
 122 # of ShellScaffold.sh and this script will run just the same.
 123 mysetup
 124 
 125 runit
 126 ## This test fails by timing out.
 127 pass