1 /*

     2  * Copyright (c) 2007, 2015, 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_VM_SERVICES_PSMEMORYPOOL_HPP

    26 #define SHARE_VM_SERVICES_PSMEMORYPOOL_HPP

    27 

    28 #include "utilities/macros.hpp"

    29 #if INCLUDE_ALL_GCS

    30 #include "gc/parallel/mutableSpace.hpp"

    31 #include "gc/parallel/psOldGen.hpp"

    32 #include "gc/parallel/psYoungGen.hpp"

    33 #include "gc/serial/defNewGeneration.hpp"

    34 #include "gc/shared/space.hpp"

    35 #include "memory/heap.hpp"

    36 #include "services/memoryPool.hpp"

    37 #include "services/memoryUsage.hpp"

    38 #endif // INCLUDE_ALL_GCS

    39 

    40 class PSGenerationPool : public CollectedMemoryPool {

    41 private:

    42   PSOldGen* _old_gen;

    43 

    44 public:

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

    46 

    47   MemoryUsage get_memory_usage();

    48   size_t used_in_bytes()              { return _old_gen->used_in_bytes(); }

    49   size_t max_size() const             { return _old_gen->reserved().byte_size(); }

    50 };

    51 

    52 class EdenMutableSpacePool : public CollectedMemoryPool {

    53 private:

    54   PSYoungGen*   _young_gen;

    55   MutableSpace* _space;

    56 

    57 public:

    58   EdenMutableSpacePool(PSYoungGen* young_gen,

    59                        MutableSpace* space,

    60                        const char* name,

    61                        PoolType type,

    62                        bool support_usage_threshold);

    63 

    64   MutableSpace* space()                     { return _space; }

    65   MemoryUsage get_memory_usage();

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

    67   size_t max_size() const {

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

    69     return _young_gen->max_size() - _young_gen->from_space()->capacity_in_bytes() - _young_gen->to_space()->capacity_in_bytes();

    70   }

    71 };

    72 

    73 class SurvivorMutableSpacePool : public CollectedMemoryPool {

    74 private:

    75   PSYoungGen*   _young_gen;

    76 

    77 public:

    78   SurvivorMutableSpacePool(PSYoungGen* young_gen,

    79                            const char* name,

    80                            PoolType type,

    81                            bool support_usage_threshold);

    82 

    83   MemoryUsage get_memory_usage();

    84 

    85   size_t used_in_bytes() {

    86     return _young_gen->from_space()->used_in_bytes();

    87   }

    88   size_t committed_in_bytes() {

    89     return _young_gen->from_space()->capacity_in_bytes();

    90   }

    91   size_t max_size() const {

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

    93     return _young_gen->from_space()->capacity_in_bytes();

    94   }

    95 };

    96 

    97 #endif // SHARE_VM_SERVICES_PSMEMORYPOOL_HPP