Mercurial > hg > truffle
view src/share/vm/utilities/preserveException.cpp @ 13370:3e67710a6d08
SchedulePhase: remove old memory aware scheudling
author | Bernhard Urban <bernhard.urban@jku.at> |
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date | Tue, 17 Dec 2013 21:39:01 +0100 |
parents | b9a9ed0f8eeb |
children |
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/* * Copyright (c) 1998, 2012, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. * */ #include "precompiled.hpp" #include "runtime/handles.inline.hpp" #include "utilities/preserveException.hpp" // TODO: These three classes should be refactored PreserveExceptionMark::PreserveExceptionMark(Thread*& thread) { thread = Thread::current(); _thread = thread; _preserved_exception_oop = Handle(thread, _thread->pending_exception()); _preserved_exception_line = _thread->exception_line(); _preserved_exception_file = _thread->exception_file(); _thread->clear_pending_exception(); // Needed to avoid infinite recursion } PreserveExceptionMark::~PreserveExceptionMark() { if (_thread->has_pending_exception()) { oop exception = _thread->pending_exception(); _thread->clear_pending_exception(); // Needed to avoid infinite recursion exception->print(); fatal("PreserveExceptionMark destructor expects no pending exceptions"); } if (_preserved_exception_oop() != NULL) { _thread->set_pending_exception(_preserved_exception_oop(), _preserved_exception_file, _preserved_exception_line); } } // This code is cloned from PreserveExceptionMark, except that: // returned pending exceptions do not cause a crash. // thread is passed in, not set (not a reference parameter) // and bug 6431341 has been addressed. CautiouslyPreserveExceptionMark::CautiouslyPreserveExceptionMark(Thread* thread) { _thread = thread; _preserved_exception_oop = Handle(thread, _thread->pending_exception()); _preserved_exception_line = _thread->exception_line(); _preserved_exception_file = _thread->exception_file(); _thread->clear_pending_exception(); // Pending exceptions are checked in the destructor } CautiouslyPreserveExceptionMark::~CautiouslyPreserveExceptionMark() { assert(!_thread->has_pending_exception(), "unexpected exception generated"); if (_thread->has_pending_exception()) { _thread->clear_pending_exception(); } if (_preserved_exception_oop() != NULL) { _thread->set_pending_exception(_preserved_exception_oop(), _preserved_exception_file, _preserved_exception_line); } } void WeakPreserveExceptionMark::preserve() { _preserved_exception_oop = Handle(_thread, _thread->pending_exception()); _preserved_exception_line = _thread->exception_line(); _preserved_exception_file = _thread->exception_file(); _thread->clear_pending_exception(); } void WeakPreserveExceptionMark::restore() { if (!_thread->has_pending_exception()) { _thread->set_pending_exception(_preserved_exception_oop(), _preserved_exception_file, _preserved_exception_line); } }