1 /*
2 * Copyright (c) 2011, 2014, 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_GC_IMPLEMENTATION_SHARED_HSPACECOUNTERS_HPP
26 #define SHARE_VM_GC_IMPLEMENTATION_SHARED_HSPACECOUNTERS_HPP
27
28 #include "utilities/macros.hpp"
29 #include "gc_implementation/shared/generationCounters.hpp"
30 #include "memory/generation.hpp"
31 #include "runtime/perfData.hpp"
32
33 // A HSpaceCounter is a holder class for performance counters
34 // that track a collections (logical spaces) in a heap;
35
36 class HeapSpaceUsedHelper;
37 class G1SpaceMonitoringSupport;
38
39 class HSpaceCounters: public CHeapObj<mtGC> {
40 friend class VMStructs;
41
42 private:
43 PerfVariable* _capacity;
44 PerfVariable* _used;
45
46 // Constant PerfData types don't need to retain a reference.
47 // However, it's a good idea to document them here.
48
49 char* _name_space;
50
51 public:
66 }
67
68 debug_only(
69 // for security reasons, we do not allow arbitrary reads from
70 // the counters as they may live in shared memory.
71 jlong used() {
72 return _used->get_value();
73 }
74 jlong capacity() {
75 return _used->get_value();
76 }
77 )
78
79 inline void update_all(size_t capacity, size_t used) {
80 update_capacity(capacity);
81 update_used(used);
82 }
83
84 const char* name_space() const { return _name_space; }
85 };
86 #endif // SHARE_VM_GC_IMPLEMENTATION_SHARED_HSPACECOUNTERS_HPP
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1 /*
2 * Copyright (c) 2011, 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_GC_SHARED_HSPACECOUNTERS_HPP
26 #define SHARE_VM_GC_SHARED_HSPACECOUNTERS_HPP
27
28 #include "gc/shared/generation.hpp"
29 #include "gc/shared/generationCounters.hpp"
30 #include "runtime/perfData.hpp"
31 #include "utilities/macros.hpp"
32
33 // A HSpaceCounter is a holder class for performance counters
34 // that track a collections (logical spaces) in a heap;
35
36 class HeapSpaceUsedHelper;
37 class G1SpaceMonitoringSupport;
38
39 class HSpaceCounters: public CHeapObj<mtGC> {
40 friend class VMStructs;
41
42 private:
43 PerfVariable* _capacity;
44 PerfVariable* _used;
45
46 // Constant PerfData types don't need to retain a reference.
47 // However, it's a good idea to document them here.
48
49 char* _name_space;
50
51 public:
66 }
67
68 debug_only(
69 // for security reasons, we do not allow arbitrary reads from
70 // the counters as they may live in shared memory.
71 jlong used() {
72 return _used->get_value();
73 }
74 jlong capacity() {
75 return _used->get_value();
76 }
77 )
78
79 inline void update_all(size_t capacity, size_t used) {
80 update_capacity(capacity);
81 update_used(used);
82 }
83
84 const char* name_space() const { return _name_space; }
85 };
86 #endif // SHARE_VM_GC_SHARED_HSPACECOUNTERS_HPP
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