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70 lines
2.2 KiB
C++
70 lines
2.2 KiB
C++
/*
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* Copyright (c) 1998, 2021, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*
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*/
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#ifndef SHARE_UTILITIES_PRESERVEEXCEPTION_HPP
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#define SHARE_UTILITIES_PRESERVEEXCEPTION_HPP
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#include "runtime/handles.hpp"
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// This file provides more support for exception handling; see also exceptions.hpp
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class PreserveExceptionMark {
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private:
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Thread* _thread;
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Handle _preserved_exception_oop;
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int _preserved_exception_line;
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const char* _preserved_exception_file;
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public:
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PreserveExceptionMark(Thread* thread);
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~PreserveExceptionMark();
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};
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// Like PreserveExceptionMark but allows new exceptions to be generated in
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// the body of the mark. If a new exception is generated then the original one
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// is discarded.
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class WeakPreserveExceptionMark {
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private:
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Thread* _thread;
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Handle _preserved_exception_oop;
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int _preserved_exception_line;
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const char* _preserved_exception_file;
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void preserve();
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void restore();
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public:
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WeakPreserveExceptionMark(Thread* thread) : _thread(thread) {
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if (thread->has_pending_exception()) {
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preserve();
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}
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}
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~WeakPreserveExceptionMark() {
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if (_preserved_exception_oop.not_null()) {
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restore();
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}
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}
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};
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#endif // SHARE_UTILITIES_PRESERVEEXCEPTION_HPP
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