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 #include "precompiled.hpp"
26 #include "gc/parallel/psMemoryPool.hpp"
27
PSGenerationPool(PSOldGen * old_gen,const char * name,bool support_usage_threshold)28 PSGenerationPool::PSGenerationPool(PSOldGen* old_gen,
29 const char* name,
30 bool support_usage_threshold) :
31 CollectedMemoryPool(name, old_gen->capacity_in_bytes(),
32 old_gen->reserved().byte_size(), support_usage_threshold), _old_gen(old_gen) {
33 }
34
get_memory_usage()35 MemoryUsage PSGenerationPool::get_memory_usage() {
36 size_t maxSize = (available_for_allocation() ? max_size() : 0);
37 size_t used = used_in_bytes();
38 size_t committed = _old_gen->capacity_in_bytes();
39
40 return MemoryUsage(initial_size(), used, committed, maxSize);
41 }
42
43 // The max size of EdenMutableSpacePool =
44 // max size of the PSYoungGen - capacity of two survivor spaces
45 //
46 // Max size of PS eden space is changing due to ergonomic.
47 // PSYoungGen, PSOldGen, Eden, Survivor spaces are all resizable.
48 //
EdenMutableSpacePool(PSYoungGen * young_gen,MutableSpace * space,const char * name,bool support_usage_threshold)49 EdenMutableSpacePool::EdenMutableSpacePool(PSYoungGen* young_gen,
50 MutableSpace* space,
51 const char* name,
52 bool support_usage_threshold) :
53 CollectedMemoryPool(name, space->capacity_in_bytes(),
54 (young_gen->max_size() - young_gen->from_space()->capacity_in_bytes() - young_gen->to_space()->capacity_in_bytes()),
55 support_usage_threshold),
56 _young_gen(young_gen),
57 _space(space) {
58 }
59
get_memory_usage()60 MemoryUsage EdenMutableSpacePool::get_memory_usage() {
61 size_t maxSize = (available_for_allocation() ? max_size() : 0);
62 size_t used = used_in_bytes();
63 size_t committed = _space->capacity_in_bytes();
64
65 return MemoryUsage(initial_size(), used, committed, maxSize);
66 }
67
68 // The max size of SurvivorMutableSpacePool =
69 // current capacity of the from-space
70 //
71 // PS from and to survivor spaces could have different sizes.
72 //
SurvivorMutableSpacePool(PSYoungGen * young_gen,const char * name,bool support_usage_threshold)73 SurvivorMutableSpacePool::SurvivorMutableSpacePool(PSYoungGen* young_gen,
74 const char* name,
75 bool support_usage_threshold) :
76 CollectedMemoryPool(name, young_gen->from_space()->capacity_in_bytes(),
77 young_gen->from_space()->capacity_in_bytes(),
78 support_usage_threshold), _young_gen(young_gen) {
79 }
80
get_memory_usage()81 MemoryUsage SurvivorMutableSpacePool::get_memory_usage() {
82 size_t maxSize = (available_for_allocation() ? max_size() : 0);
83 size_t used = used_in_bytes();
84 size_t committed = committed_in_bytes();
85 return MemoryUsage(initial_size(), used, committed, maxSize);
86 }
87