1 /*

     2  * Copyright (c) 2018, 2019 SAP and/or its affiliates.

     3  * Copyright (c) 2018, 2019 Oracle and/or its affiliates. All rights reserved.

     4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     5  *

     6  * This code is free software; you can redistribute it and/or modify it

     7  * under the terms of the GNU General Public License version 2 only, as

     8  * published by the Free Software Foundation.

     9  *

    10  * This code is distributed in the hope that it will be useful, but WITHOUT

    11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    13  * version 2 for more details (a copy is included in the LICENSE file that

    14  * accompanied this code).

    15  *

    16  * You should have received a copy of the GNU General Public License version

    17  * 2 along with this work; if not, write to the Free Software Foundation,

    18  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    19  *

    20  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    21  * or visit www.oracle.com if you need additional information or have any

    22  * questions.

    23  *

    24  */

    25 

    26 #ifndef SHARE_MEMORY_METASPACE_METASPACEREPORT_HPP

    27 #define SHARE_MEMORY_METASPACE_METASPACEREPORT_HPP

    28 

    29 #include "memory/allocation.hpp"

    30 

    31 namespace metaspace {

    32 

    33 class MetaspaceReporter : public AllStatic {

    34 public:

    35 

    36   // Flags for print_report().

    37   enum ReportFlag {

    38     // Show usage by class loader.

    39     rf_show_loaders                 = (1 << 0),

    40     // Breaks report down by chunk type (small, medium, ...).

    41     rf_break_down_by_chunktype      = (1 << 1),

    42     // Breaks report down by space type (anonymous, reflection, ...).

    43     rf_break_down_by_spacetype      = (1 << 2),

    44     // Print details about the underlying virtual spaces.

    45     rf_show_vslist                  = (1 << 3),

    46     // Print metaspace map.

    47     rf_show_vsmap                   = (1 << 4),

    48     // If show_loaders: show loaded classes for each loader.

    49     rf_show_classes                 = (1 << 5)

    50   };

    51 

    52   // This will print out a basic metaspace usage report but

    53   // unlike print_report() is guaranteed not to lock or to walk the CLDG.

    54   static void print_basic_report(outputStream* st, size_t scale);

    55 

    56   // Prints a report about the current metaspace state.

    57   // Optional parts can be enabled via flags.

    58   // Function will walk the CLDG and will lock the expand lock; if that is not

    59   // convenient, use print_basic_report() instead.

    60   static void print_report(outputStream* out, size_t scale = 0, int flags = 0);

    61 

    62 };

    63 

    64 } // namespace metaspace

    65 

    66 #endif // SHARE_MEMORY_METASPACE_METASPACEREPORT_HPP