jdk

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/*
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 * Copyright (c) 1998, 2023, 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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#include "precompiled.hpp"
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#include "memory/resourceArea.hpp"
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#include "oops/oop.hpp"
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#include "runtime/handles.inline.hpp"
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#include "utilities/preserveException.hpp"
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PreserveExceptionMark::PreserveExceptionMark(Thread* thread) {
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  _thread = thread;
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  _preserved_exception_oop = Handle(thread, _thread->pending_exception());
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  _preserved_exception_line = _thread->exception_line();
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  _preserved_exception_file = _thread->exception_file();
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  _thread->clear_pending_exception(); // Pending exceptions are checked in the destructor
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}
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PreserveExceptionMark::~PreserveExceptionMark() {
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  if (_thread->has_pending_exception()) {
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    oop exception = _thread->pending_exception();
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    _thread->clear_pending_exception(); // Needed to avoid infinite recursion
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    ResourceMark rm(_thread);
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    assert(false, "PreserveExceptionMark destructor expects no pending exceptions %s",
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                  exception->print_string());
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  }
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  if (_preserved_exception_oop() != nullptr) {
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    _thread->set_pending_exception(_preserved_exception_oop(), _preserved_exception_file, _preserved_exception_line);
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  }
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}
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void WeakPreserveExceptionMark::preserve() {
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  _preserved_exception_oop = Handle(_thread, _thread->pending_exception());
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  _preserved_exception_line = _thread->exception_line();
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  _preserved_exception_file = _thread->exception_file();
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  _thread->clear_pending_exception();
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}
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void WeakPreserveExceptionMark::restore() {
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  if (!_thread->has_pending_exception()) {
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    _thread->set_pending_exception(_preserved_exception_oop(), _preserved_exception_file, _preserved_exception_line);
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  }
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}
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