1 /*

     2  * Copyright (c) 2018, 2019, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

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    23  */

    24 

    25 #ifndef SHARE_GC_PARALLEL_HETEROGENEOUSGENERATIONSIZER_HPP

    26 #define SHARE_GC_PARALLEL_HETEROGENEOUSGENERATIONSIZER_HPP

    27 

    28 #include "gc/parallel/generationSizer.hpp"

    29 

    30 // There is a nice batch of tested generation sizing code in

    31 // GenCollectorPolicy. Lets reuse it!

    32 

    33 class HeterogeneousGenerationSizer : public GenerationSizer {

    34 private:

    35   // Max fraction of dram to use for young generation when MaxRAMFraction and

    36   // MaxRAMPercentage are not specified on commandline.

    37   static const double MaxRamFractionForYoung;

    38 

    39 protected:

    40   virtual void initialize_flags();

    41 

    42 public:

    43   virtual size_t heap_reserved_size_bytes() const;

    44   virtual bool is_hetero_heap() const;

    45 };

    46 #endif // SHARE_GC_PARALLEL_HETEROGENEOUSGENERATIONSIZER_HPP