/*
* Copyright ( c ) 2018 , 2021 , Oracle and / or its affiliates . All rights reserved .
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER .
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* 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 ) .
*
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* 2 along with this work ; if not , write to the Free Software Foundation ,
* Inc . , 51 Franklin St , Fifth Floor , Boston , MA 02110 - 1301 USA .
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#ifndef SHARE_GC_SHARED_PARALLELCLEANING_HPP
#define SHARE_GC_SHARED_PARALLELCLEANING_HPP
#include "classfile/classLoaderDataGraph.hpp"
#include "code/codeCache.hpp"
#include "gc/shared/oopStorageParState.hpp"
#include "gc/shared/workerThread.hpp"
class CodeCacheUnloadingTask {
const bool _unloading_occurred;
const uint _num_workers;
// Variables used to claim nmethods.
CompiledMethod* _first_nmethod;
CompiledMethod* volatile _claimed_nmethod;
public :
CodeCacheUnloadingTask(uint num_workers, bool unloading_occurred);
~CodeCacheUnloadingTask();
private :
static const int MaxClaimNmethods = 16 ;
void claim_nmethods(CompiledMethod** claimed_nmethods, int *num_claimed_nmethods);
public :
// Cleaning and unloading of nmethods.
void work(uint worker_id);
};
class KlassCleaningTask : public StackObj {
volatile int _clean_klass_tree_claimed;
ClassLoaderDataGraphKlassIteratorAtomic _klass_iterator;
public :
KlassCleaningTask();
private :
bool claim_clean_klass_tree_task();
InstanceKlass* claim_next_klass();
public :
void clean_klass(InstanceKlass* ik) {
ik->clean_weak_instanceklass_links();
}
void work();
};
#endif // SHARE_GC_SHARED_PARALLELCLEANING_HPP
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