ec5bfaba53
Reviewed-by: tschatzl, kvn
73 lines
2.1 KiB
C++
73 lines
2.1 KiB
C++
/*
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* Copyright (c) 2018, 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 "code/compiledMethod.hpp"
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#include "code/nmethod.hpp"
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#include "gc/shared/gcBehaviours.hpp"
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IsUnloadingBehaviour* IsUnloadingBehaviour::_current = NULL;
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class IsCompiledMethodUnloadingOopClosure: public OopClosure {
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BoolObjectClosure *_cl;
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bool _is_unloading;
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public:
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IsCompiledMethodUnloadingOopClosure(BoolObjectClosure* cl)
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: _cl(cl),
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_is_unloading(false)
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{ }
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virtual void do_oop(oop* p) {
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if (_is_unloading) {
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return;
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}
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oop obj = *p;
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if (obj == NULL) {
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return;
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}
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if (!_cl->do_object_b(obj)) {
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_is_unloading = true;
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}
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}
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virtual void do_oop(narrowOop* p) {
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ShouldNotReachHere();
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}
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bool is_unloading() const {
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return _is_unloading;
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}
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};
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bool ClosureIsUnloadingBehaviour::is_unloading(CompiledMethod* cm) const {
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if (cm->is_nmethod()) {
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IsCompiledMethodUnloadingOopClosure cl(_cl);
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static_cast<nmethod*>(cm)->oops_do(&cl, true /* allow_dead */);
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return cl.is_unloading();
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} else {
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return false;
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}
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}
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