1 /*

     2  * Copyright (c) 2018, 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

    21  * questions.

    22  *

    23  */

    24 

    25 #ifndef SHARE_GC_SHARED_GENARGUMENTS_HPP

    26 #define SHARE_GC_SHARED_GENARGUMENTS_HPP

    27 

    28 #include "gc/shared/gcArguments.hpp"

    29 #include "utilities/debug.hpp"

    30 

    31 extern size_t MinNewSize;

    32 

    33 extern size_t MinOldSize;

    34 extern size_t MaxOldSize;

    35 

    36 extern size_t GenAlignment;

    37 

    38 class GenArguments : public GCArguments {

    39   friend class TestGenCollectorPolicy; // Testing

    40 private:

    41   virtual void initialize_alignments();

    42   virtual void initialize_size_info();

    43 

    44   // Return the (conservative) maximum heap alignment

    45   virtual size_t conservative_max_heap_alignment();

    46 

    47   DEBUG_ONLY(void assert_flags();)

    48   DEBUG_ONLY(void assert_size_info();)

    49 

    50   static size_t scale_by_NewRatio_aligned(size_t base_size, size_t alignment);

    51 

    52 protected:

    53   virtual void initialize_heap_flags_and_sizes();

    54 };

    55 

    56 #endif // SHARE_GC_SHARED_GENARGUMENTS_HPP