/*
* Copyright ( c ) 1998 , 2021 , 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 "memory/resourceArea.hpp"
#include "oops/oop.hpp"
#include "runtime/handles.inline.hpp"
#include "utilities/preserveException.hpp"
PreserveExceptionMark::PreserveExceptionMark(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
}
PreserveExceptionMark::~PreserveExceptionMark() {
if (_thread->has_pending_exception()) {
oop exception = _thread->pending_exception();
_thread->clear_pending_exception(); // Needed to avoid infinite recursion
ResourceMark rm(_thread);
assert(false, "PreserveExceptionMark destructor expects no pending exceptions %s" ,
exception->print_string());
}
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);
}
}
Messung V0.5 in Prozent C=96 H=100 G=97
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