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src/share/vm/services/nmtCommon.hpp@833b0f92429a (annotated)
src/share/vm/services/nmtCommon.hpp
Wed, 27 Aug 2014 08:19:12 -0400
- author
- zgu
- date
- Wed, 27 Aug 2014 08:19:12 -0400
- changeset 7074
- 833b0f92429a
- child 7078
- c6211b707068
- permissions
- -rw-r--r--
8046598: Scalable Native memory tracking development
Summary: Enhance scalability of native memory tracking
Reviewed-by: coleenp, ctornqvi, gtriantafill
| zgu@7074 | 1 | /* |
| zgu@7074 | 2 | * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved. |
| zgu@7074 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| zgu@7074 | 4 | * |
| zgu@7074 | 5 | * This code is free software; you can redistribute it and/or modify it |
| zgu@7074 | 6 | * under the terms of the GNU General Public License version 2 only, as |
| zgu@7074 | 7 | * published by the Free Software Foundation. |
| zgu@7074 | 8 | * |
| zgu@7074 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| zgu@7074 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| zgu@7074 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| zgu@7074 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
| zgu@7074 | 13 | * accompanied this code). |
| zgu@7074 | 14 | * |
| zgu@7074 | 15 | * You should have received a copy of the GNU General Public License version |
| zgu@7074 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
| zgu@7074 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| zgu@7074 | 18 | * |
| zgu@7074 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| zgu@7074 | 20 | * or visit www.oracle.com if you need additional information or have any |
| zgu@7074 | 21 | * questions. |
| zgu@7074 | 22 | * |
| zgu@7074 | 23 | */ |
| zgu@7074 | 24 | |
| zgu@7074 | 25 | #ifndef SHARE_VM_SERVICES_NMT_COMMON_HPP |
| zgu@7074 | 26 | #define SHARE_VM_SERVICES_NMT_COMMON_HPP |
| zgu@7074 | 27 | |
| zgu@7074 | 28 | #include "memory/allocation.hpp" |
| zgu@7074 | 29 | #include "utilities/globalDefinitions.hpp" |
| zgu@7074 | 30 | |
| zgu@7074 | 31 | #define CALC_OBJ_SIZE_IN_TYPE(obj, type) (align_size_up_(sizeof(obj), sizeof(type))/sizeof(type)) |
| zgu@7074 | 32 | |
| zgu@7074 | 33 | // Data type for memory counters |
| zgu@7074 | 34 | #ifdef _LP64 |
| zgu@7074 | 35 | typedef jlong MemoryCounterType; |
| zgu@7074 | 36 | #else |
| zgu@7074 | 37 | typedef jint MemoryCounterType; |
| zgu@7074 | 38 | #endif |
| zgu@7074 | 39 | |
| zgu@7074 | 40 | // Native memory tracking level |
| zgu@7074 | 41 | enum NMT_TrackingLevel { |
| zgu@7074 | 42 | NMT_unknown = 0xFF, |
| zgu@7074 | 43 | NMT_off = 0x00, |
| zgu@7074 | 44 | NMT_minimal = 0x01, |
| zgu@7074 | 45 | NMT_summary = 0x02, |
| zgu@7074 | 46 | NMT_detail = 0x03 |
| zgu@7074 | 47 | }; |
| zgu@7074 | 48 | |
| zgu@7074 | 49 | // Number of stack frames to capture. This is a |
| zgu@7074 | 50 | // build time decision. |
| zgu@7074 | 51 | const int NMT_TrackingStackDepth = 4; |
| zgu@7074 | 52 | |
| zgu@7074 | 53 | class NativeCallStack; |
| zgu@7074 | 54 | extern NativeCallStack emptyStack; |
| zgu@7074 | 55 | |
| zgu@7074 | 56 | // A few common utilities for native memory tracking |
| zgu@7074 | 57 | class NMTUtil : AllStatic { |
| zgu@7074 | 58 | public: |
| zgu@7074 | 59 | // Map memory type to index |
| zgu@7074 | 60 | static inline int flag_to_index(MEMFLAGS flag) { |
| zgu@7074 | 61 | return (flag & 0xff); |
| zgu@7074 | 62 | } |
| zgu@7074 | 63 | |
| zgu@7074 | 64 | // Map memory type to human readable name |
| zgu@7074 | 65 | static const char* flag_to_name(MEMFLAGS flag) { |
| zgu@7074 | 66 | return _memory_type_names[flag_to_index(flag)]; |
| zgu@7074 | 67 | } |
| zgu@7074 | 68 | |
| zgu@7074 | 69 | // Map an index to memory type |
| zgu@7074 | 70 | static MEMFLAGS index_to_flag(int index) { |
| zgu@7074 | 71 | return (MEMFLAGS)index; |
| zgu@7074 | 72 | } |
| zgu@7074 | 73 | |
| zgu@7074 | 74 | // Memory size scale |
| zgu@7074 | 75 | static const char* scale_name(size_t scale); |
| zgu@7074 | 76 | static size_t scale_from_name(const char* scale); |
| zgu@7074 | 77 | |
| zgu@7074 | 78 | // Translate memory size in specified scale |
| zgu@7074 | 79 | static size_t amount_in_scale(size_t amount, size_t scale) { |
| zgu@7074 | 80 | return (amount + scale / 2) / scale; |
| zgu@7074 | 81 | } |
| zgu@7074 | 82 | private: |
| zgu@7074 | 83 | static const char* _memory_type_names[mt_number_of_types]; |
| zgu@7074 | 84 | }; |
| zgu@7074 | 85 | |
| zgu@7074 | 86 | |
| zgu@7074 | 87 | #endif |
