/*
* 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_ZPAGECACHE_HPP
#define SHARE_GC_Z_ZPAGECACHE_HPP
#include "gc/z/zList.hpp"
#include "gc/z/zPage.hpp"
#include "gc/z/zValue.hpp"
class ZPageCacheFlushClosure;
class ZPageCache {
private :
ZPerNUMA<ZList<ZPage> > _small;
ZList<ZPage> _medium;
ZList<ZPage> _large;
uint64_t _last_commit;
ZPage* alloc_small_page();
ZPage* alloc_medium_page();
ZPage* alloc_large_page(size_t size);
ZPage* alloc_oversized_medium_page(size_t size);
ZPage* alloc_oversized_large_page(size_t size);
ZPage* alloc_oversized_page(size_t size);
bool flush_list_inner(ZPageCacheFlushClosure* cl, ZList<ZPage>* from, ZList<ZPage>* to);
void flush_list(ZPageCacheFlushClosure* cl, ZList<ZPage>* from, ZList<ZPage>* to);
void flush_per_numa_lists(ZPageCacheFlushClosure* cl, ZPerNUMA<ZList<ZPage> >* from, ZList<ZPage>* to);
void flush(ZPageCacheFlushClosure* cl, ZList<ZPage>* to);
public :
ZPageCache();
ZPage* alloc_page(uint8_t type, size_t size);
void free_page(ZPage* page);
void flush_for_allocation(size_t requested, ZList<ZPage>* to);
size_t flush_for_uncommit(size_t requested, ZList<ZPage>* to, uint64_t* timeout);
void set_last_commit();
void pages_do(ZPageClosure* cl) const ;
};
#endif // SHARE_GC_Z_ZPAGECACHE_HPP
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