1 /*
2  * Copyright (c) 2012, 2018, 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_JFR_RECORDER_SERVICE_JFRMEMORYSIZER_HPP
26 #define SHARE_VM_JFR_RECORDER_SERVICE_JFRMEMORYSIZER_HPP
27 
28 #include "memory/allocation.hpp"
29 #include "utilities/globalDefinitions.hpp"
30 
31 extern const julong MIN_BUFFER_COUNT;
32 extern const julong MIN_GLOBAL_BUFFER_SIZE;
33 extern const julong MIN_MEMORY_SIZE;
34 extern const julong MIN_THREAD_BUFFER_SIZE;
35 
36 struct JfrMemoryOptions {
37   julong memory_size;
38   julong global_buffer_size;
39   julong buffer_count;
40   julong thread_buffer_size;
41   bool memory_size_configured;
42   bool global_buffer_size_configured;
43   bool buffer_count_configured;
44   bool thread_buffer_size_configured;
45 };
46 
47 //
48 // Encapsulates sizing of memory options
49 // The options parameter is modified with updated values.
50 //
51 class JfrMemorySizer : AllStatic {
52  public:
53   static bool adjust_options(JfrMemoryOptions* options);
54 };
55 
56 #endif // SHARE_VM_JFR_RECORDER_SERVICE_JFRMEMORYSIZER_HPP
57