1 /*
2 * Copyright (c) 2019, 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_G1_NODE_TIMES_HPP
26 #define SHARE_VM_GC_G1_NODE_TIMES_HPP
27
28 #include "memory/allocation.hpp"
29
30 // Manages statistics of multi nodes.
31 class G1NUMAStats : public CHeapObj<mtGC> {
32 struct Stat {
33 // Hit count: if requested id equals to returned id.
34 size_t _hit;
35 // Total request count
36 size_t _requested;
37
38 // Hit count / total request count
39 double rate() const;
40 };
41
42 // Holds data array which has a size of (node count) * (node count + 1) to
43 // represent request node * allocated node. The request node includes any node case.
44 // All operations are NOT thread-safe.
45 // The row index indicates a requested node index while the column node index
46 // indicates an allocated node index. The last row is for any node index request.
47 // E.g. (req, alloc) = (0,0) (1,0) (2,0) (0,1) (Any, 3) (0,2) (0,3) (0,3) (3,3)
48 // Allocated node index 0 1 2 3 Total
49 // Requested node index 0 1 1 1 2 5
50 // 1 1 0 0 0 1
51 // 2 1 0 0 0 1
52 // 3 0 0 0 1 1
53 // Any 0 0 0 1 1
54 class NodeDataArray : public CHeapObj<mtGC> {
55 // The number of nodes.
56 uint _num_column;
57 // The number of nodes + 1 (for any node request)
58 uint _num_row;
59 // 2-dimension array that holds count of allocated / requested node index.
60 size_t** _data;
61
62 public:
63 NodeDataArray(uint num_nodes);
64 ~NodeDataArray();
65
66 // Create Stat result of hit count, requested count and hit rate.
67 // The result is copied to the given result parameter.
68 void create_hit_rate(Stat* result) const;
69 // Create Stat result of hit count, requested count and hit rate of the given index.
70 // The result is copied to the given result parameter.
71 void create_hit_rate(Stat* result, uint req_index) const;
72 // Return sum of the given index.
73 size_t sum(uint req_index) const;
74 // Increase at the request / allocated index.
75 void increase(uint req_index, uint alloc_index);
76 // Clear all data.
77 void clear();
78 // Return current value of the given request / allocated index.
79 size_t get(uint req_index, uint alloc_index);
80 // Copy values of the given request index.
81 void copy(uint req_index, size_t* stat);
82 };
83
84 public:
85 enum NodeDataItems {
86 // Statistics of a new region allocation.
87 NewRegionAlloc,
88 // Statistics of object processing during copy to survivor region.
89 LocalObjProcessAtCopyToSurv,
90 NodeDataItemsSentinel
91 };
92
93 private:
94 const int* _node_ids;
95 uint _num_node_ids;
96
97 NodeDataArray* _node_data[NodeDataItemsSentinel];
98
99 void print_info(G1NUMAStats::NodeDataItems phase);
100
101 void print_mutator_alloc_stat_debug();
102
103 public:
104 G1NUMAStats(const int* node_ids, uint num_node_ids);
105 ~G1NUMAStats();
106
107 void clear(G1NUMAStats::NodeDataItems phase);
108
109 // Update the given phase of requested and allocated node index.
110 void update(G1NUMAStats::NodeDataItems phase, uint requested_node_index, uint allocated_node_index);
111
112 // Copy all allocated statistics of the given phase and requested node.
113 // Precondition: allocated_stat should have same length of active nodes.
114 void copy(G1NUMAStats::NodeDataItems phase, uint requested_node_index, size_t* allocated_stat);
115
116 void print_statistics();
117 };
118
119 #endif // SHARE_VM_GC_G1_NODE_TIMES_HPP