1 /*
   2  * Copyright (c) 2020, 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_MEMORY_DUMPALLOCSTATS_HPP
  26 #define SHARE_MEMORY_DUMPALLOCSTATS_HPP
  27 
  28 #include "memory/allocation.hpp"
  29 
  30 // This is for dumping detailed statistics for the allocations
  31 // in the shared spaces.
  32 class DumpAllocStats : public ResourceObj {
  33 public:
  34 
  35   // Here's poor man's enum inheritance
  36 #define SHAREDSPACE_OBJ_TYPES_DO(f) \
  37   METASPACE_OBJ_TYPES_DO(f) \
  38   f(SymbolHashentry) \
  39   f(SymbolBucket) \
  40   f(StringHashentry) \
  41   f(StringBucket) \
  42   f(ModulesNatives) \
  43   f(Other)
  44 
  45   enum Type {
  46     // Types are MetaspaceObj::ClassType, MetaspaceObj::SymbolType, etc
  47     SHAREDSPACE_OBJ_TYPES_DO(METASPACE_OBJ_TYPE_DECLARE)
  48     _number_of_types
  49   };
  50 
  51   static const char* type_name(Type type) {
  52     switch(type) {
  53     SHAREDSPACE_OBJ_TYPES_DO(METASPACE_OBJ_TYPE_NAME_CASE)
  54     default:
  55       ShouldNotReachHere();
  56       return NULL;
  57     }
  58   }
  59 
  60 public:
  61   enum { RO = 0, RW = 1 };
  62 
  63   int _counts[2][_number_of_types];
  64   int _bytes [2][_number_of_types];
  65 
  66   DumpAllocStats() {
  67     memset(_counts, 0, sizeof(_counts));
  68     memset(_bytes,  0, sizeof(_bytes));
  69   };
  70 
  71   void record(MetaspaceObj::Type type, int byte_size, bool read_only) {
  72     assert(int(type) >= 0 && type < MetaspaceObj::_number_of_types, "sanity");
  73     int which = (read_only) ? RO : RW;
  74     _counts[which][type] ++;
  75     _bytes [which][type] += byte_size;
  76   }
  77 
  78   void record_modules(int byte_size, bool read_only) {
  79     int which = (read_only) ? RO : RW;
  80     _bytes [which][ModulesNativesType] += byte_size;
  81   }
  82 
  83   void record_other_type(int byte_size, bool read_only) {
  84     int which = (read_only) ? RO : RW;
  85     _bytes [which][OtherType] += byte_size;
  86   }
  87   void print_stats(int ro_all, int rw_all, int mc_all);
  88 };
  89 
  90 #endif // SHARE_MEMORY_DUMPALLOCSTATS_HPP