1 #!/bin/sh
   2 
   3 #
   4 # Copyright (c) 2009, 2013 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 $1 {
  52     public static List<Object> objList = new ArrayList<Object>();
  53 
  54     private static void init(int numObjs) {
  55         for (int i = 0; i < numObjs; i++) {
  56             objList.add(new Object());
  57         }
  58     }
  59 
  60     public static void main(String[] args) {
  61         for (int i = 0; i < 10; i++) {
  62             System.out.println("top of loop");     // @1 breakpoint
  63             init(500000);
  64             objList.clear();
  65             System.gc();
  66             System.out.println("bottom of loop");  // @1 breakpoint
  67         }
  68         System.out.println("end of test");         // @1 breakpoint
  69     }
  70 }
  71 
  72 EOF
  73 }
  74 
  75 # This is called to feed cmds to jdb.
  76 dojdbCmds()
  77 {
  78     setBkpts @1
  79 
  80     # get to the first loop breakpoint
  81     runToBkpt
  82     # 19 "cont" commands gets us through all the loop breakpoints.
  83     # Use for-loop instead of while-loop to avoid creating processes
  84     # for '[' and 'expr'.
  85     for ii in 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19; do
  86         contToBkpt
  87     done
  88     # get to the last breakpoint
  89     contToBkpt
  90 }
  91 
  92 
  93 mysetup()
  94 {
  95     if [ -z "$TESTSRC" ] ; then
  96         TESTSRC=.
  97     fi
  98 
  99     for ii in . $TESTSRC $TESTSRC/.. ; do
 100         if [ -r "$ii/ShellScaffold.sh" ] ; then
 101             . $ii/ShellScaffold.sh
 102             break
 103         fi
 104     done
 105 }
 106 
 107 # You could replace this next line with the contents
 108 # of ShellScaffold.sh and this script will run just the same.
 109 mysetup
 110 
 111 runit
 112 
 113 # make sure we hit the first breakpoint at least once
 114 jdbFailIfNotPresent 'System\..*top of loop'
 115 
 116 # make sure we hit the second breakpoint at least once
 117 jdbFailIfNotPresent 'System\..*bottom of loop'
 118 
 119 # make sure we hit the last breakpoint
 120 jdbFailIfNotPresent 'System\..*end of test'
 121 
 122 # make sure we had at least one full GC
 123 debuggeeFailIfNotPresent 'Full GC'
 124 
 125 # check for error message due to thread ID change
 126 debuggeeFailIfPresent \
 127     'Exception in thread "event-handler" java.lang.NullPointerException'
 128 
 129 pass