duke@435: /*
stefank@2314:  * Copyright (c) 1998, 2010, Oracle and/or its affiliates. All rights reserved.
duke@435:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435:  *
duke@435:  * This code is free software; you can redistribute it and/or modify it
duke@435:  * under the terms of the GNU General Public License version 2 only, as
duke@435:  * published by the Free Software Foundation.
duke@435:  *
duke@435:  * This code is distributed in the hope that it will be useful, but WITHOUT
duke@435:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
duke@435:  * version 2 for more details (a copy is included in the LICENSE file that
duke@435:  * accompanied this code).
duke@435:  *
duke@435:  * You should have received a copy of the GNU General Public License version
duke@435:  * 2 along with this work; if not, write to the Free Software Foundation,
duke@435:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435:  *
trims@1907:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907:  * or visit www.oracle.com if you need additional information or have any
trims@1907:  * questions.
duke@435:  *
duke@435:  */
duke@435: 
stefank@2314: #ifndef SHARE_VM_UTILITIES_PRESERVEEXCEPTION_HPP
stefank@2314: #define SHARE_VM_UTILITIES_PRESERVEEXCEPTION_HPP
stefank@2314: 
stefank@2314: #include "runtime/handles.hpp"
stefank@2314: #ifdef TARGET_OS_FAMILY_linux
stefank@2314: # include "thread_linux.inline.hpp"
stefank@2314: #endif
stefank@2314: #ifdef TARGET_OS_FAMILY_solaris
stefank@2314: # include "thread_solaris.inline.hpp"
stefank@2314: #endif
stefank@2314: #ifdef TARGET_OS_FAMILY_windows
stefank@2314: # include "thread_windows.inline.hpp"
stefank@2314: #endif
stefank@2314: 
duke@435: // This file provides more support for exception handling; see also exceptions.hpp
duke@435: class PreserveExceptionMark {
duke@435:  private:
duke@435:   Thread*     _thread;
duke@435:   Handle      _preserved_exception_oop;
duke@435:   int         _preserved_exception_line;
duke@435:   const char* _preserved_exception_file;
duke@435: 
duke@435:  public:
duke@435:   PreserveExceptionMark(Thread*& thread);
duke@435:   ~PreserveExceptionMark();
duke@435: };
duke@435: 
duke@435: 
duke@435: // This is a clone of PreserveExceptionMark which asserts instead
duke@435: // of failing when what it wraps generates a pending exception.
duke@435: // It also addresses bug 6431341.
duke@435: class CautiouslyPreserveExceptionMark {
duke@435:  private:
duke@435:   Thread*     _thread;
duke@435:   Handle      _preserved_exception_oop;
duke@435:   int         _preserved_exception_line;
duke@435:   const char* _preserved_exception_file;
duke@435: 
duke@435:  public:
duke@435:   CautiouslyPreserveExceptionMark(Thread* thread);
duke@435:   ~CautiouslyPreserveExceptionMark();
duke@435: };
duke@435: 
duke@435: 
duke@435: // Like PreserveExceptionMark but allows new exceptions to be generated in
duke@435: // the body of the mark. If a new exception is generated then the original one
duke@435: // is discarded.
duke@435: class WeakPreserveExceptionMark {
duke@435: private:
duke@435:   Thread*     _thread;
duke@435:   Handle      _preserved_exception_oop;
duke@435:   int         _preserved_exception_line;
duke@435:   const char* _preserved_exception_file;
duke@435: 
duke@435:   void        preserve();
duke@435:   void        restore();
duke@435: 
duke@435:   public:
duke@435:     WeakPreserveExceptionMark(Thread* pThread) :  _thread(pThread), _preserved_exception_oop()  {
duke@435:       if (pThread->has_pending_exception()) {
duke@435:         preserve();
duke@435:       }
duke@435:     }
duke@435:     ~WeakPreserveExceptionMark() {
duke@435:       if (_preserved_exception_oop.not_null()) {
duke@435:         restore();
duke@435:       }
duke@435:     }
duke@435: };
duke@435: 
duke@435: 
duke@435: 
duke@435: // use global exception mark when allowing pending exception to be set and
duke@435: // saving and restoring them
duke@435: #define PRESERVE_EXCEPTION_MARK                    Thread* THREAD; PreserveExceptionMark __em(THREAD);
stefank@2314: 
stefank@2314: #endif // SHARE_VM_UTILITIES_PRESERVEEXCEPTION_HPP