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src/hotspot/share/gc/g1/g1HeterogeneousHeapPolicy.hpp
author sangheki
Fri, 21 Dec 2018 08:18:59 -0800
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permissions -rw-r--r--
8211425: Allocation of old generation of java heap on alternate memory devices - G1 GC 8202286: Allocation of old generation of Java heap on alternate memory devices Summary: Enable an experimental feature in HotSpot JVM to allocate old generation of G1 GC on an alternative memory device, such as NV-DIMMs. Reviewed-by: sangheki, sjohanss Contributed-by: kishor.kharbas@intel.com
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/*
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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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#ifndef SHARE_VM_GC_G1_G1HETEROGENEOUSHEAPPOLICY_HPP













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#define SHARE_VM_GC_G1_G1HETEROGENEOUSHEAPPOLICY_HPP













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#include "gc/g1/g1CollectorPolicy.hpp"













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#include "gc/g1/g1Policy.hpp"













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#include "gc/g1/heterogeneousHeapRegionManager.hpp"













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class G1HeterogeneousHeapPolicy : public G1Policy {













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  // Stash a pointer to the hrm.













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  HeterogeneousHeapRegionManager* _manager;













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public:













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  G1HeterogeneousHeapPolicy(G1CollectorPolicy* policy, STWGCTimer* gc_timer);













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  // initialize policy













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  virtual void init(G1CollectedHeap* g1h, G1CollectionSet* collection_set);













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  // Record end of an evacuation pause.













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  virtual void record_collection_pause_end(double pause_time_ms, size_t cards_scanned, size_t heap_used_bytes_before_gc);













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  // Record the end of full collection.













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  virtual void record_full_collection_end();













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  virtual bool force_upgrade_to_full();













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};













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#endif // SHARE_VM_GC_G1_G1HETEROGENEOUSHEAPPOLICY_HPP















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