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#!/bin/sh
#
# Copyright (c) 2009, 2013, Oracle and/or its affiliates. All rights reserved.
# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
#
# This code is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License version 2 only, as
# published by the Free Software Foundation.
#
# This code is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
# version 2 for more details (a copy is included in the LICENSE file that
# accompanied this code).
#
# You should have received a copy of the GNU General Public License version
# 2 along with this work; if not, write to the Free Software Foundation,
# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
#
# Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
# or visit www.oracle.com if you need additional information or have any
# questions.
#
# @test
# @bug 6862295
# @summary Verify breakpoints still work after a full GC.
# @author dcubed (based on the test program posted to the following
# Eclipse thread https://bugs.eclipse.org/bugs/show_bug.cgi?id=279137)
#
# @key intermittent
# @run shell BreakpointWithFullGC.sh
compileOptions=-g
# Hijacking the mode parameter to make sure we use a small amount
# of memory and can see what GC is doing.
mode="-Xmx32m -verbose:gc"
# Force use of a GC framework collector to see the original failure.
#mode="$mode -XX:+UseSerialGC"
# Uncomment this to see the JDI trace
#jdbOptions=-dbgtrace
createJavaFile()
{
cat <<EOF > $1.java.1
import java.util.ArrayList;
import java.util.List;
public class $1 {
public static List<Object> objList = new ArrayList<Object>();
private static void init(int numObjs) {
for (int i = 0; i < numObjs; i++) {
objList.add(new Object());
}
}
public static void main(String[] args) {
for (int i = 0; i < 10; i++) {
System.out.println("top of loop"); // @1 breakpoint
init(500000);
objList.clear();
System.gc();
System.out.println("bottom of loop"); // @1 breakpoint
}
System.out.println("end of test"); // @1 breakpoint
}
}
EOF
}
# This is called to feed cmds to jdb.
dojdbCmds()
{
setBkpts @1
# get to the first loop breakpoint
runToBkpt
# 19 "cont" commands gets us through all the loop breakpoints.
# Use for-loop instead of while-loop to avoid creating processes
# for '[' and 'expr'.
for ii in 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19; do
contToBkpt
done
# get to the last breakpoint
contToBkpt
}
mysetup()
{
if [ -z "$TESTSRC" ] ; then
TESTSRC=.
fi
for ii in . $TESTSRC $TESTSRC/.. ; do
if [ -r "$ii/ShellScaffold.sh" ] ; then
. $ii/ShellScaffold.sh
break
fi
done
}
# You could replace this next line with the contents
# of ShellScaffold.sh and this script will run just the same.
mysetup
runit
# make sure we hit the first breakpoint at least once
jdbFailIfNotPresent 'System\..*top of loop'
# make sure we hit the second breakpoint at least once
jdbFailIfNotPresent 'System\..*bottom of loop'
# make sure we hit the last breakpoint
jdbFailIfNotPresent 'System\..*end of test'
# make sure we had at least one full GC
# Prior to JDK9-B95, the pattern was 'Full GC'
debuggeeMatchRegexp '^.*?\bPause Full\b\(System.gc\(\)\)\b.*?$'
# check for error message due to thread ID change
debuggeeFailIfPresent \
'Exception in thread "event-handler" java.lang.NullPointerException'
pass
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