jdk8-mips64-public/hotspot: src/share/vm/services/psMemoryPool.hpp@7bb995fbd3c0

     1 /*

     2  * Copyright (c) 2007 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 PSGenerationPool : public CollectedMemoryPool {

    26 private:

    27   PSOldGen* _gen;

    29 public:

    30   PSGenerationPool(PSOldGen* pool, const char* name, PoolType type, bool support_usage_threshold);

    31   PSGenerationPool(PSPermGen* pool, const char* name, PoolType type, bool support_usage_threshold);

    33   MemoryUsage get_memory_usage();

    34   size_t used_in_bytes()              { return _gen->used_in_bytes(); }

    35   size_t max_size() const             { return _gen->reserved().byte_size(); }

    36 };

    38 class EdenMutableSpacePool : public CollectedMemoryPool {

    39 private:

    40   PSYoungGen*   _gen;

    41   MutableSpace* _space;

    43 public:

    44   EdenMutableSpacePool(PSYoungGen* gen,

    45                        MutableSpace* space,

    46                        const char* name,

    47                        PoolType type,

    48                        bool support_usage_threshold);

    50   MutableSpace* space()                     { return _space; }

    51   MemoryUsage get_memory_usage();

    52   size_t used_in_bytes()                    { return space()->used_in_bytes(); }

    53   size_t max_size() const {

    54     // Eden's max_size = max_size of Young Gen - the current committed size of survivor spaces

    55     return _gen->max_size() - _gen->from_space()->capacity_in_bytes() - _gen->to_space()->capacity_in_bytes();

    56   }

    57 };

    59 class SurvivorMutableSpacePool : public CollectedMemoryPool {

    60 private:

    61   PSYoungGen*   _gen;

    63 public:

    64   SurvivorMutableSpacePool(PSYoungGen* gen,

    65                            const char* name,

    66                            PoolType type,

    67                            bool support_usage_threshold);

    69   MemoryUsage get_memory_usage();

    71   size_t used_in_bytes() {

    72     return _gen->from_space()->used_in_bytes();

    73   }

    74   size_t committed_in_bytes() {

    75     return _gen->from_space()->capacity_in_bytes();

    76   }

    77   size_t max_size() const {

    78     // Return current committed size of the from-space

    79     return _gen->from_space()->capacity_in_bytes();

    80   }

    81 };

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