1 /*

     2  * Copyright (c) 2017, 2018, Red Hat, Inc. All rights reserved.

     3  *

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

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

     6  * published by the Free Software Foundation.

     7  *

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

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

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

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

    12  * accompanied this code).

    13  *

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

    15  * 2 along with this work; if not, write to the Free Software Foundation,

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

    17  *

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

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

    20  * questions.

    21  *

    22  */

    23 

    24 #ifndef SHARE_VM_GC_EPSILON_COLLECTORPOLICY_HPP

    25 #define SHARE_VM_GC_EPSILON_COLLECTORPOLICY_HPP

    26 

    27 #include "gc/shared/collectorPolicy.hpp"

    28 

    29 class EpsilonCollectorPolicy: public CollectorPolicy {

    30 protected:

    31   virtual void initialize_alignments() {

    32     size_t page_size = UseLargePages ? os::large_page_size() : os::vm_page_size();

    33     size_t align = MAX2((size_t)os::vm_allocation_granularity(), page_size);

    34     _space_alignment = align;

    35     _heap_alignment  = align;

    36   }

    37 

    38 public:

    39   EpsilonCollectorPolicy() : CollectorPolicy() {};

    40 };

    41 

    42 #endif // SHARE_VM_GC_EPSILON_COLLECTORPOLICY_HPP