jdk8-mips64-public/hotspot: src/share/vm/services/nmtCommon.hpp@833b0f92429a

8046598: Scalable Native memory tracking development
Summary: Enhance scalability of native memory tracking
Reviewed-by: coleenp, ctornqvi, gtriantafill

     1 /*

     2  * Copyright (c) 2014, 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_SERVICES_NMT_COMMON_HPP

    26 #define SHARE_VM_SERVICES_NMT_COMMON_HPP

    28 #include "memory/allocation.hpp"

    29 #include "utilities/globalDefinitions.hpp"

    31 #define CALC_OBJ_SIZE_IN_TYPE(obj, type) (align_size_up_(sizeof(obj), sizeof(type))/sizeof(type))

    33 // Data type for memory counters

    34 #ifdef _LP64

    35   typedef jlong    MemoryCounterType;

    36 #else

    37   typedef jint     MemoryCounterType;

    38 #endif

    40 // Native memory tracking level

    41 enum NMT_TrackingLevel {

    42   NMT_unknown = 0xFF,

    43   NMT_off     = 0x00,

    44   NMT_minimal = 0x01,

    45   NMT_summary = 0x02,

    46   NMT_detail  = 0x03

    47 };

    49 // Number of stack frames to capture. This is a

    50 // build time decision.

    51 const int NMT_TrackingStackDepth = 4;

    53 class NativeCallStack;

    54 extern NativeCallStack emptyStack;

    56 // A few common utilities for native memory tracking

    57 class NMTUtil : AllStatic {

    58  public:

    59   // Map memory type to index

    60   static inline int flag_to_index(MEMFLAGS flag) {

    61     return (flag & 0xff);

    62   }

    64   // Map memory type to human readable name

    65   static const char* flag_to_name(MEMFLAGS flag) {

    66     return _memory_type_names[flag_to_index(flag)];

    67   }

    69   // Map an index to memory type

    70   static MEMFLAGS index_to_flag(int index) {

    71     return (MEMFLAGS)index;

    72   }

    74   // Memory size scale

    75   static const char* scale_name(size_t scale);

    76   static size_t scale_from_name(const char* scale);

    78   // Translate memory size in specified scale

    79   static size_t amount_in_scale(size_t amount, size_t scale) {

    80     return (amount + scale / 2) / scale;

    81   }

    82  private:

    83   static const char* _memory_type_names[mt_number_of_types];

    84 };

    87 #endif

Mercurial > jdk8-mips64-public > hotspot / file revision

src/share/vm/services/nmtCommon.hpp@833b0f92429a

src/share/vm/services/nmtCommon.hpp