1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/share/vm/classfile/metadataOnStackMark.hpp Wed Jan 23 10:34:29 2013 -0500
1.3 @@ -0,0 +1,45 @@
1.4 +/*
1.5 + * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation.
1.11 + *
1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.14 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.15 + * version 2 for more details (a copy is included in the LICENSE file that
1.16 + * accompanied this code).
1.17 + *
1.18 + * You should have received a copy of the GNU General Public License version
1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.21 + *
1.22 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.23 + * or visit www.oracle.com if you need additional information or have any
1.24 + * questions.
1.25 + *
1.26 + */
1.27 +
1.28 +#ifndef SHARE_VM_CLASSFILE_METADATAONSTACKMARK_HPP
1.29 +#define SHARE_VM_CLASSFILE_METADATAONSTACKMARK_HPP
1.30 +
1.31 +#include "memory/allocation.hpp"
1.32 +
1.33 +class Metadata;
1.34 +
1.35 +// Helper class to mark and unmark metadata used on the stack as either handles
1.36 +// or executing methods, so that it can't be deleted during class redefinition
1.37 +// and class unloading.
1.38 +// This is also used for other things that can be deallocated, like class
1.39 +// metadata during parsing, relocated methods, and methods in backtraces.
1.40 +class MetadataOnStackMark : public StackObj {
1.41 + NOT_PRODUCT(static bool _is_active;)
1.42 + public:
1.43 + MetadataOnStackMark();
1.44 + ~MetadataOnStackMark();
1.45 + static void record(Metadata* m);
1.46 +};
1.47 +
1.48 +#endif // SHARE_VM_CLASSFILE_METADATAONSTACKMARK_HPP
