1 /*

     2  * Copyright (c) 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 #include "precompiled.hpp"

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

    27 #include "gc/shared/generation.hpp"

    28 #include "gc/shared/genMemoryPools.hpp"

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

    30 

    31 ContiguousSpacePool::ContiguousSpacePool(ContiguousSpace* space,

    32                                          const char* name,

    33                                          size_t max_size,

    34                                          bool support_usage_threshold) :

    35   CollectedMemoryPool(name, space->capacity(), max_size,

    36                       support_usage_threshold), _space(space) {

    37 }

    38 

    39 size_t ContiguousSpacePool::used_in_bytes() {

    40   return space()->used();

    41 }

    42 

    43 MemoryUsage ContiguousSpacePool::get_memory_usage() {

    44   size_t maxSize   = (available_for_allocation() ? max_size() : 0);

    45   size_t used      = used_in_bytes();

    46   size_t committed = _space->capacity();

    47 

    48   return MemoryUsage(initial_size(), used, committed, maxSize);

    49 }

    50 

    51 SurvivorContiguousSpacePool::SurvivorContiguousSpacePool(DefNewGeneration* young_gen,

    52                                                          const char* name,

    53                                                          size_t max_size,

    54                                                          bool support_usage_threshold) :

    55   CollectedMemoryPool(name, young_gen->from()->capacity(), max_size,

    56                       support_usage_threshold), _young_gen(young_gen) {

    57 }

    58 

    59 size_t SurvivorContiguousSpacePool::used_in_bytes() {

    60   return _young_gen->from()->used();

    61 }

    62 

    63 size_t SurvivorContiguousSpacePool::committed_in_bytes() {

    64   return _young_gen->from()->capacity();

    65 }

    66 

    67 MemoryUsage SurvivorContiguousSpacePool::get_memory_usage() {

    68   size_t maxSize = (available_for_allocation() ? max_size() : 0);

    69   size_t used    = used_in_bytes();

    70   size_t committed = committed_in_bytes();

    71 

    72   return MemoryUsage(initial_size(), used, committed, maxSize);

    73 }

    74 

    75 GenerationPool::GenerationPool(Generation* gen,

    76                                const char* name,

    77                                bool support_usage_threshold) :

    78   CollectedMemoryPool(name, gen->capacity(), gen->max_capacity(),

    79                       support_usage_threshold), _gen(gen) {

    80 }

    81 

    82 size_t GenerationPool::used_in_bytes() {

    83   return _gen->used();

    84 }

    85 

    86 MemoryUsage GenerationPool::get_memory_usage() {

    87   size_t used      = used_in_bytes();

    88   size_t committed = _gen->capacity();

    89   size_t maxSize   = (available_for_allocation() ? max_size() : 0);

    90 

    91   return MemoryUsage(initial_size(), used, committed, maxSize);

    92 }