jdk8-mips64-public/hotspot: src/share/vm/services/psMemoryPool.hpp@4102b59539ce

8005012: Add WB APIs to better support NMT testing
Summary: Add WB API functions to enable better NMT testing
Reviewed-by: dholmes, zgu

     1 /*

     2  * Copyright (c) 2007, 2012, 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

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    23  */

    25 #ifndef SHARE_VM_SERVICES_PSMEMORYPOOL_HPP

    26 #define SHARE_VM_SERVICES_PSMEMORYPOOL_HPP

    28 #ifndef SERIALGC

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

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

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

    32 #include "memory/defNewGeneration.hpp"

    33 #include "memory/heap.hpp"

    34 #include "memory/space.hpp"

    35 #include "services/memoryPool.hpp"

    36 #include "services/memoryUsage.hpp"

    37 #endif

    39 class PSGenerationPool : public CollectedMemoryPool {

    40 private:

    41   PSOldGen* _gen;

    43 public:

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

    46   MemoryUsage get_memory_usage();

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

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

    49 };

    51 class EdenMutableSpacePool : public CollectedMemoryPool {

    52 private:

    53   PSYoungGen*   _gen;

    54   MutableSpace* _space;

    56 public:

    57   EdenMutableSpacePool(PSYoungGen* gen,

    58                        MutableSpace* space,

    59                        const char* name,

    60                        PoolType type,

    61                        bool support_usage_threshold);

    63   MutableSpace* space()                     { return _space; }

    64   MemoryUsage get_memory_usage();

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

    66   size_t max_size() const {

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

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

    69   }

    70 };

    72 class SurvivorMutableSpacePool : public CollectedMemoryPool {

    73 private:

    74   PSYoungGen*   _gen;

    76 public:

    77   SurvivorMutableSpacePool(PSYoungGen* gen,

    78                            const char* name,

    79                            PoolType type,

    80                            bool support_usage_threshold);

    82   MemoryUsage get_memory_usage();

    84   size_t used_in_bytes() {

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

    86   }

    87   size_t committed_in_bytes() {

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

    89   }

    90   size_t max_size() const {

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

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

    93   }

    94 };

    96 #endif // SHARE_VM_SERVICES_PSMEMORYPOOL_HPP

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