0N/A/*
1879N/A * Copyright (c) 1998, 2010, Oracle and/or its affiliates. All rights reserved.
0N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
0N/A *
0N/A * This code is free software; you can redistribute it and/or modify it
0N/A * under the terms of the GNU General Public License version 2 only, as
0N/A * published by the Free Software Foundation.
0N/A *
0N/A * This code is distributed in the hope that it will be useful, but WITHOUT
0N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
0N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
0N/A * version 2 for more details (a copy is included in the LICENSE file that
0N/A * accompanied this code).
0N/A *
0N/A * You should have received a copy of the GNU General Public License version
0N/A * 2 along with this work; if not, write to the Free Software Foundation,
0N/A * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
0N/A *
1472N/A * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1472N/A * or visit www.oracle.com if you need additional information or have any
1472N/A * questions.
0N/A *
0N/A */
0N/A
1879N/A#include "precompiled.hpp"
1879N/A#include "runtime/handles.inline.hpp"
1879N/A#include "utilities/preserveException.hpp"
0N/A
0N/A// TODO: These three classes should be refactored
0N/A
0N/APreserveExceptionMark::PreserveExceptionMark(Thread*& thread) {
0N/A thread = Thread::current();
0N/A _thread = thread;
0N/A _preserved_exception_oop = Handle(thread, _thread->pending_exception());
0N/A _preserved_exception_line = _thread->exception_line();
0N/A _preserved_exception_file = _thread->exception_file();
3205N/A _thread->clear_pending_exception(); // Needed to avoid infinite recursion
0N/A}
0N/A
0N/A
0N/APreserveExceptionMark::~PreserveExceptionMark() {
0N/A if (_thread->has_pending_exception()) {
0N/A oop exception = _thread->pending_exception();
0N/A _thread->clear_pending_exception(); // Needed to avoid infinite recursion
0N/A exception->print();
0N/A fatal("PreserveExceptionMark destructor expects no pending exceptions");
0N/A }
0N/A if (_preserved_exception_oop() != NULL) {
0N/A _thread->set_pending_exception(_preserved_exception_oop(), _preserved_exception_file, _preserved_exception_line);
0N/A }
0N/A}
0N/A
0N/A
0N/A// This code is cloned from PreserveExceptionMark, except that:
0N/A// returned pending exceptions do not cause a crash.
0N/A// thread is passed in, not set (not a reference parameter)
0N/A// and bug 6431341 has been addressed.
0N/A
0N/ACautiouslyPreserveExceptionMark::CautiouslyPreserveExceptionMark(Thread* thread) {
0N/A _thread = thread;
0N/A _preserved_exception_oop = Handle(thread, _thread->pending_exception());
0N/A _preserved_exception_line = _thread->exception_line();
0N/A _preserved_exception_file = _thread->exception_file();
0N/A _thread->clear_pending_exception(); // Pending exceptions are checked in the destructor
0N/A}
0N/A
0N/A
0N/ACautiouslyPreserveExceptionMark::~CautiouslyPreserveExceptionMark() {
0N/A assert(!_thread->has_pending_exception(), "unexpected exception generated");
0N/A if (_thread->has_pending_exception()) {
0N/A _thread->clear_pending_exception();
0N/A }
0N/A if (_preserved_exception_oop() != NULL) {
0N/A _thread->set_pending_exception(_preserved_exception_oop(), _preserved_exception_file, _preserved_exception_line);
0N/A }
0N/A}
0N/A
0N/A
0N/Avoid WeakPreserveExceptionMark::preserve() {
0N/A _preserved_exception_oop = Handle(_thread, _thread->pending_exception());
0N/A _preserved_exception_line = _thread->exception_line();
0N/A _preserved_exception_file = _thread->exception_file();
0N/A _thread->clear_pending_exception();
0N/A}
0N/A
0N/Avoid WeakPreserveExceptionMark::restore() {
0N/A if (!_thread->has_pending_exception()) {
0N/A _thread->set_pending_exception(_preserved_exception_oop(), _preserved_exception_file, _preserved_exception_line);
0N/A }
0N/A}