1 #!/bin/sh
   2 
   3 #
   4 # Copyright (c) 2009, 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 6862295
  28 #  @summary Verify breakpoints still work after a full GC.
  29 #  @author dcubed (based on the test program posted to the following
  30 #  Eclipse thread https://bugs.eclipse.org/bugs/show_bug.cgi?id=279137)
  31 #
  32 #  @run shell BreakpointWithFullGC.sh
  33 
  34 compileOptions=-g
  35 # Hijacking the mode parameter to make sure we use a small amount
  36 # of memory and can see what GC is doing.
  37 mode="-Xmx32m -verbose:gc"
  38 # Force use of a GC framework collector to see the original failure.
  39 #mode="$mode -XX:+UseSerialGC"
  40 
  41 # Uncomment this to see the JDI trace
  42 #jdbOptions=-dbgtrace
  43 
  44 createJavaFile()
  45 {
  46     cat <<EOF > $1.java.1
  47 
  48 import java.util.ArrayList;
  49 import java.util.List;
  50 
  51 public class $1 {
  52     public static List<Object> objList = new ArrayList<Object>();
  53 
  54     private static void init(int numObjs) {
  55         for (int i = 0; i < numObjs; i++) {
  56             objList.add(new Object());
  57         }
  58     }
  59 
  60     public static void main(String[] args) {
  61         for (int i = 0; i < 10; i++) {
  62             System.out.println("top of loop");     // @1 breakpoint
  63             init(1000000);
  64             objList.clear();
  65             System.out.println("bottom of loop");  // @1 breakpoint
  66         }
  67         System.out.println("end of test");         // @1 breakpoint
  68     }
  69 }
  70 
  71 EOF
  72 }
  73 
  74 # This is called to feed cmds to jdb.
  75 dojdbCmds()
  76 {
  77     setBkpts @1
  78 
  79     # get to the first loop breakpoint
  80     runToBkpt
  81     # 19 "cont" commands gets us through all the loop breakpoints.
  82     # Use for-loop instead of while-loop to avoid creating processes
  83     # for '[' and 'expr'.
  84     for ii in 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19; do
  85         contToBkpt
  86     done
  87     # get to the last breakpoint
  88     contToBkpt
  89 }
  90 
  91 
  92 mysetup()
  93 {
  94     if [ -z "$TESTSRC" ] ; then
  95         TESTSRC=.
  96     fi
  97 
  98     for ii in . $TESTSRC $TESTSRC/.. ; do
  99         if [ -r "$ii/ShellScaffold.sh" ] ; then
 100             . $ii/ShellScaffold.sh
 101             break
 102         fi
 103     done
 104 }
 105 
 106 # You could replace this next line with the contents
 107 # of ShellScaffold.sh and this script will run just the same.
 108 mysetup
 109 
 110 runit
 111 
 112 # make sure we hit the first breakpoint at least once
 113 jdbFailIfNotPresent 'System\..*top of loop'
 114 
 115 # make sure we hit the second breakpoint at least once
 116 jdbFailIfNotPresent 'System\..*bottom of loop'
 117 
 118 # make sure we hit the last breakpoint
 119 jdbFailIfNotPresent 'System\..*end of test'
 120 
 121 # make sure we had at least one full GC
 122 debuggeeFailIfNotPresent 'Full GC'
 123 
 124 # check for error message due to thread ID change
 125 debuggeeFailIfPresent \
 126     'Exception in thread "event-handler" java.lang.NullPointerException'
 127 
 128 pass