1 /*

     2  * Copyright (c) 2007, 2017, 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 "gc/parallel/mutableSpace.hpp"

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

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

    31 #include "services/memoryPool.hpp"

    32 #include "services/memoryUsage.hpp"

    33 

    34 class PSGenerationPool : public CollectedMemoryPool {

    35 private:

    36   PSOldGen* _old_gen;

    37 

    38 public:

    39   PSGenerationPool(PSOldGen* pool, const char* name, bool support_usage_threshold);

    40 

    41   MemoryUsage get_memory_usage();

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

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

    44 };

    45 

    46 class EdenMutableSpacePool : public CollectedMemoryPool {

    47 private:

    48   PSYoungGen*   _young_gen;

    49   MutableSpace* _space;

    50 

    51 public:

    52   EdenMutableSpacePool(PSYoungGen* young_gen,

    53                        MutableSpace* space,

    54                        const char* name,

    55                        bool support_usage_threshold);

    56 

    57   MutableSpace* space()                     { return _space; }

    58   MemoryUsage get_memory_usage();

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

    60   size_t max_size() const {

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

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

    63   }

    64 };

    65 

    66 class SurvivorMutableSpacePool : public CollectedMemoryPool {

    67 private:

    68   PSYoungGen*   _young_gen;

    69 

    70 public:

    71   SurvivorMutableSpacePool(PSYoungGen* young_gen,

    72                            const char* name,

    73                            bool support_usage_threshold);

    74 

    75   MemoryUsage get_memory_usage();

    76 

    77   size_t used_in_bytes() {

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

    79   }

    80   size_t committed_in_bytes() {

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

    82   }

    83   size_t max_size() const {

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

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

    86   }

    87 };

    88 

    89 #endif // SHARE_VM_SERVICES_PSMEMORYPOOL_HPP