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