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