jdk8-mips64-public/hotspot: src/share/vm/gc_implementation/parallelScavenge/asPSOldGen.hpp@5534bd30c151

6725714: par compact - add a table to speed up bitmap searches
Reviewed-by: jmasa, tschatzl

     1 /*

     2  * Copyright (c) 2003, 2010, 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  */

    25 #ifndef SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_ASPSOLDGEN_HPP

    26 #define SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_ASPSOLDGEN_HPP

    28 #include "gc_implementation/parallelScavenge/objectStartArray.hpp"

    29 #include "gc_implementation/parallelScavenge/psOldGen.hpp"

    30 #include "gc_implementation/parallelScavenge/psVirtualspace.hpp"

    31 #include "gc_implementation/shared/generationCounters.hpp"

    32 #include "gc_implementation/shared/mutableSpace.hpp"

    33 #include "gc_implementation/shared/spaceCounters.hpp"

    35 class ASPSOldGen : public PSOldGen {

    36   friend class VMStructs;

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

    38                            // can grow.

    39  public:

    40   ASPSOldGen(size_t initial_byte_size,

    41              size_t minimum_byte_size,

    42              size_t byte_size_limit,

    43              const char* gen_name, int level);

    44   ASPSOldGen(PSVirtualSpace* vs,

    45              size_t initial_byte_size,

    46              size_t minimum_byte_size,

    47              size_t byte_size_limit,

    48              const char* gen_name, int level);

    49   size_t gen_size_limit()               { return _gen_size_limit; }

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

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

    53   // After a shrink or expand reset the generation

    54   void reset_after_change();

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

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

    58   // decisions about adjusting the virtual space.

    59   size_t available_for_expansion();

    60   size_t available_for_contraction();

    62   // Accessors

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

    65   // Debugging support

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

    67 };

    69 #endif // SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_ASPSOLDGEN_HPP

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