jdk8-mips64-public/hotspot: src/share/vm/gc_implementation/parallelScavenge/asPSOldGen.hpp@850fdf70db2b

     1 /*

     2  * Copyright 2003 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

    20  * CA 95054 USA or visit www.sun.com if you need additional information or

    21  * have any questions.

    22  *

    23  */

    25 class ASPSOldGen : public PSOldGen {

    26   friend class VMStructs;

    27   size_t _gen_size_limit;  // Largest size the generation's reserved size

    28                            // can grow.

    29  public:

    30   ASPSOldGen(size_t initial_byte_size,

    31              size_t minimum_byte_size,

    32              size_t byte_size_limit,

    33              const char* gen_name, int level);

    34   ASPSOldGen(PSVirtualSpace* vs,

    35              size_t initial_byte_size,

    36              size_t minimum_byte_size,

    37              size_t byte_size_limit,

    38              const char* gen_name, int level);

    39   size_t gen_size_limit()               { return _gen_size_limit; }

    40   size_t max_gen_size()                 { return _reserved.byte_size(); }

    41   void set_gen_size_limit(size_t v)     { _gen_size_limit = v; }

    43   // After a shrink or expand reset the generation

    44   void reset_after_change();

    46   // Return number of bytes that the virtual space in the generation is willing

    47   // to expand or contract.  The results from these methods should feed into the

    48   // decisions about adjusting the virtual space.

    49   size_t available_for_expansion();

    50   size_t available_for_contraction();

    52   // Accessors

    53   void set_reserved(MemRegion v) { _reserved = v; }

    55   // Debugging support

    56   virtual const char* short_name() const { return "ASPSOldGen"; }

    57 };

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