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/*
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* Copyright 1998-2006 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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* CA 95054 USA or visit www.sun.com if you need additional information or
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* have any questions.
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*
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*/
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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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// This is a clone of PreserveExceptionMark which asserts instead
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// of failing when what it wraps generates a pending exception.
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// It also addresses bug 6431341.
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class CautiouslyPreserveExceptionMark {
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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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CautiouslyPreserveExceptionMark(Thread* thread);
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~CautiouslyPreserveExceptionMark();
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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* pThread) : _thread(pThread), _preserved_exception_oop() {
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if (pThread->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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// use global exception mark when allowing pending exception to be set and
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// saving and restoring them
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#define PRESERVE_EXCEPTION_MARK Thread* THREAD; PreserveExceptionMark __em(THREAD);
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