/*
* Copyright (c) 2015, 2020, 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.
*/
#ifndef SHARE_GC_Z_ZROOTSITERATOR_HPP
#define SHARE_GC_Z_ZROOTSITERATOR_HPP
#include "gc/shared/oopStorageSetParState.hpp"
#include "logging/log.hpp"
#include "memory/iterator.hpp"
#include "runtime/threadSMR.hpp"
template <typename Iterator>
class ZParallelApply {
private:
Iterator _iter;
volatile bool _completed;
public:
ZParallelApply() :
_iter(),
_completed(false) {}
template <typename ClosureType>
void apply(ClosureType* cl);
Iterator& iter() {
return _iter;
}
};
class ZStrongOopStorageSetIterator {
OopStorageSetStrongParState<true /* concurrent */, false /* is_const */> _iter;
public:
ZStrongOopStorageSetIterator();
void apply(OopClosure* cl);
};
class ZStrongCLDsIterator {
public:
void apply(CLDClosure* cl);
};
class ZJavaThreadsIterator {
private:
ThreadsListHandle _threads;
volatile uint _claimed;
uint claim();
public:
ZJavaThreadsIterator();
void apply(ThreadClosure* cl);
};
class ZNMethodsIterator {
public:
ZNMethodsIterator();
~ZNMethodsIterator();
void apply(NMethodClosure* cl);
};
class ZRootsIterator {
private:
ZParallelApply<ZStrongOopStorageSetIterator> _oop_storage_set;
ZParallelApply<ZStrongCLDsIterator> _class_loader_data_graph;
ZParallelApply<ZJavaThreadsIterator> _java_threads;
ZParallelApply<ZNMethodsIterator> _nmethods;
public:
ZRootsIterator(int cld_claim);
void apply(OopClosure* cl,
CLDClosure* cld_cl,
ThreadClosure* thread_cl,
NMethodClosure* nm_cl);
};
class ZWeakOopStorageSetIterator {
private:
OopStorageSetWeakParState<true /* concurrent */, false /* is_const */> _iter;
public:
ZWeakOopStorageSetIterator();
void apply(OopClosure* cl);
void report_num_dead();
};
class ZWeakRootsIterator {
private:
ZParallelApply<ZWeakOopStorageSetIterator> _oop_storage_set;
public:
void apply(OopClosure* cl);
void report_num_dead();
};
#endif // SHARE_GC_Z_ZROOTSITERATOR_HPP
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