jdk8-mips64-public/hotspot: src/share/vm/memory/classify.hpp@09d00c18e323

     1 /*

     2  * Copyright (c) 2003, 2010, 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  */

    25 #ifndef SHARE_VM_MEMORY_CLASSIFY_HPP

    26 #define SHARE_VM_MEMORY_CLASSIFY_HPP

    28 #include "oops/oop.inline.hpp"

    30 typedef enum oop_type {

    31   unknown_type,

    32   instance_type,

    33   instanceRef_type,

    34   objArray_type,

    35   symbol_type,

    36   klass_type,

    37   instanceKlass_type,

    38   method_type,

    39   constMethod_type,

    40   methodData_type,

    41   constantPool_type,

    42   constantPoolCache_type,

    43   typeArray_type,

    44   compiledICHolder_type,

    45   number_object_types

    46 } object_type;

    49 // Classify objects by type and keep counts.

    50 // Print the count and space taken for each type.

    53 class ClassifyObjectClosure : public ObjectClosure {

    54 private:

    56   static const char* object_type_name[number_object_types];

    58   int total_object_count;

    59   size_t total_object_size;

    60   int object_count[number_object_types];

    61   size_t object_size[number_object_types];

    63 public:

    64   ClassifyObjectClosure() { reset(); }

    65   void reset();

    66   void do_object(oop obj);

    67   static object_type classify_object(oop obj, bool count);

    68   size_t print();

    69 };

    72 // Count objects using the alloc_count field in the object's klass

    73 // object.

    75 class ClassifyInstanceKlassClosure : public ClassifyObjectClosure {

    76 private:

    77   int total_instances;

    78 public:

    79   ClassifyInstanceKlassClosure() { reset(); }

    80   void reset();

    81   void print();

    82   void do_object(oop obj);

    83 };

    86 // Clear the alloc_count fields in all classes so that the count can be

    87 // restarted.

    89 class ClearAllocCountClosure : public ObjectClosure {

    90 public:

    91   void do_object(oop obj) {

    92     if (obj->is_klass()) {

    93       Klass* k = Klass::cast((klassOop)obj);

    94       k->set_alloc_count(0);

    95     }

    96   }

    97 };

    99 #endif // SHARE_VM_MEMORY_CLASSIFY_HPP

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