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20360
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1 /*
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2 * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 *
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23 */
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24
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25 #ifndef SHARE_VM_SERVICES_NMT_COMMON_HPP
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26 #define SHARE_VM_SERVICES_NMT_COMMON_HPP
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27
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28 #include "memory/allocation.hpp"
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29 #include "utilities/globalDefinitions.hpp"
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30
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31 #define CALC_OBJ_SIZE_IN_TYPE(obj, type) (align_size_up_(sizeof(obj), sizeof(type))/sizeof(type))
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32
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33 // Data type for memory counters
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34 #ifdef _LP64
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35 typedef jlong MemoryCounterType;
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36 #else
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37 typedef jint MemoryCounterType;
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38 #endif
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39
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40 // Native memory tracking level
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41 enum NMT_TrackingLevel {
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42 NMT_unknown = 0xFF,
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43 NMT_off = 0x00,
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44 NMT_minimal = 0x01,
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45 NMT_summary = 0x02,
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46 NMT_detail = 0x03
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47 };
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48
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49 // Number of stack frames to capture. This is a
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50 // build time decision.
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51 const int NMT_TrackingStackDepth = 4;
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52
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53 // A few common utilities for native memory tracking
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54 class NMTUtil : AllStatic {
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55 public:
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56 // Map memory type to index
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57 static inline int flag_to_index(MEMFLAGS flag) {
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58 return (flag & 0xff);
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59 }
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60
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61 // Map memory type to human readable name
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62 static const char* flag_to_name(MEMFLAGS flag) {
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63 return _memory_type_names[flag_to_index(flag)];
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64 }
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65
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66 // Map an index to memory type
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67 static MEMFLAGS index_to_flag(int index) {
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68 return (MEMFLAGS)index;
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69 }
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70
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71 // Memory size scale
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72 static const char* scale_name(size_t scale);
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73 static size_t scale_from_name(const char* scale);
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74
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75 // Translate memory size in specified scale
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76 static size_t amount_in_scale(size_t amount, size_t scale) {
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77 return (amount + scale / 2) / scale;
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78 }
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79 private:
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80 static const char* _memory_type_names[mt_number_of_types];
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81 };
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82
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83
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84 #endif
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