1 /*
2 * Copyright (c) 2011, 2013, 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_G1_G1MONITORINGSUPPORT_HPP
26 #define SHARE_VM_GC_IMPLEMENTATION_G1_G1MONITORINGSUPPORT_HPP
27
28 #include "gc_implementation/shared/hSpaceCounters.hpp"
29
30 class G1CollectedHeap;
31
32 // Class for monitoring logical spaces in G1. It provides data for
33 // both G1's jstat counters as well as G1's memory pools.
34 //
35 // G1 splits the heap into heap regions and each heap region belongs
36 // to one of the following categories:
37 //
38 // * eden : regions that have been allocated since the last GC
39 // * survivors : regions with objects that survived the last few GCs
40 // * old : long-lived non-humongous regions
41 // * humongous : humongous regions
42 // * free : free regions
43 //
44 // The combination of eden and survivor regions form the equivalent of
45 // the young generation in the other GCs. The combination of old and
46 // humongous regions form the equivalent of the old generation in the
47 // other GCs. Free regions do not have a good equivalent in the other
48 // GCs given that they can be allocated as any of the other region types.
249
250 public:
251 G1GenerationCounters(G1MonitoringSupport* g1mm,
252 const char* name, int ordinal, int spaces,
253 size_t min_capacity, size_t max_capacity,
254 size_t curr_capacity);
255 };
256
257 class G1YoungGenerationCounters: public G1GenerationCounters {
258 public:
259 G1YoungGenerationCounters(G1MonitoringSupport* g1mm, const char* name);
260 virtual void update_all();
261 };
262
263 class G1OldGenerationCounters: public G1GenerationCounters {
264 public:
265 G1OldGenerationCounters(G1MonitoringSupport* g1mm, const char* name);
266 virtual void update_all();
267 };
268
269 #endif // SHARE_VM_GC_IMPLEMENTATION_G1_G1MONITORINGSUPPORT_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_G1_G1MONITORINGSUPPORT_HPP
26 #define SHARE_VM_GC_G1_G1MONITORINGSUPPORT_HPP
27
28 #include "gc/shared/hSpaceCounters.hpp"
29
30 class G1CollectedHeap;
31
32 // Class for monitoring logical spaces in G1. It provides data for
33 // both G1's jstat counters as well as G1's memory pools.
34 //
35 // G1 splits the heap into heap regions and each heap region belongs
36 // to one of the following categories:
37 //
38 // * eden : regions that have been allocated since the last GC
39 // * survivors : regions with objects that survived the last few GCs
40 // * old : long-lived non-humongous regions
41 // * humongous : humongous regions
42 // * free : free regions
43 //
44 // The combination of eden and survivor regions form the equivalent of
45 // the young generation in the other GCs. The combination of old and
46 // humongous regions form the equivalent of the old generation in the
47 // other GCs. Free regions do not have a good equivalent in the other
48 // GCs given that they can be allocated as any of the other region types.
249
250 public:
251 G1GenerationCounters(G1MonitoringSupport* g1mm,
252 const char* name, int ordinal, int spaces,
253 size_t min_capacity, size_t max_capacity,
254 size_t curr_capacity);
255 };
256
257 class G1YoungGenerationCounters: public G1GenerationCounters {
258 public:
259 G1YoungGenerationCounters(G1MonitoringSupport* g1mm, const char* name);
260 virtual void update_all();
261 };
262
263 class G1OldGenerationCounters: public G1GenerationCounters {
264 public:
265 G1OldGenerationCounters(G1MonitoringSupport* g1mm, const char* name);
266 virtual void update_all();
267 };
268
269 #endif // SHARE_VM_GC_G1_G1MONITORINGSUPPORT_HPP
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