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 #  @key intermittent
  33 #  @run shell BreakpointWithFullGC.sh
  34 
  35 compileOptions=-g
  36 # Hijacking the mode parameter to make sure we use a small amount
  37 # of memory and can see what GC is doing.
  38 mode="-Xmx32m -verbose:gc"
  39 # Force use of a GC framework collector to see the original failure.
  40 #mode="$mode -XX:+UseSerialGC"
  41 
  42 # Uncomment this to see the JDI trace
  43 #jdbOptions=-dbgtrace
  44 
  45 createJavaFile()
  46 {
  47     cat <<EOF > $1.java.1
  48 
  49 import java.util.ArrayList;
  50 import java.util.List;
  51 
  52 public class $1 {
  53     public static List<Object> objList = new ArrayList<Object>();
  54 
  55     private static void init(int numObjs) {
  56         for (int i = 0; i < numObjs; i++) {
  57             objList.add(new Object());
  58         }
  59     }
  60 
  61     public static void main(String[] args) {
  62         for (int i = 0; i < 10; i++) {
  63             System.out.println("top of loop");     // @1 breakpoint
  64             init(500000);
  65             objList.clear();
  66             System.gc();
  67             System.out.println("bottom of loop");  // @1 breakpoint
  68         }
  69         System.out.println("end of test");         // @1 breakpoint
  70     }
  71 }
  72 
  73 EOF
  74 }
  75 
  76 # This is called to feed cmds to jdb.
  77 dojdbCmds()
  78 {
  79     setBkpts @1
  80 
  81     # get to the first loop breakpoint
  82     runToBkpt
  83     # 19 "cont" commands gets us through all the loop breakpoints.
  84     # Use for-loop instead of while-loop to avoid creating processes
  85     # for '[' and 'expr'.
  86     for ii in 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19; do
  87         contToBkpt
  88     done
  89     # get to the last breakpoint
  90     contToBkpt
  91 }
  92 
  93 
  94 mysetup()
  95 {
  96     if [ -z "$TESTSRC" ] ; then
  97         TESTSRC=.
  98     fi
  99 
 100     for ii in . $TESTSRC $TESTSRC/.. ; do
 101         if [ -r "$ii/ShellScaffold.sh" ] ; then
 102             . $ii/ShellScaffold.sh
 103             break
 104         fi
 105     done
 106 }
 107 
 108 # You could replace this next line with the contents
 109 # of ShellScaffold.sh and this script will run just the same.
 110 mysetup
 111 
 112 runit
 113 
 114 # make sure we hit the first breakpoint at least once
 115 jdbFailIfNotPresent 'System\..*top of loop'
 116 
 117 # make sure we hit the second breakpoint at least once
 118 jdbFailIfNotPresent 'System\..*bottom of loop'
 119 
 120 # make sure we hit the last breakpoint
 121 jdbFailIfNotPresent 'System\..*end of test'
 122 
 123 # make sure we had at least one full GC
 124 # Prior to JDK9-B95, the pattern was 'Full GC'
 125 debuggeeMatchRegexp '^.*?\bPause Full\b\(System.gc\(\)\)\b.*?$'
 126 
 127 # check for error message due to thread ID change
 128 debuggeeFailIfPresent \
 129     'Exception in thread "event-handler" java.lang.NullPointerException'
 130 
 131 pass