1 /* 2 * Copyright (c) 2014, 2017, 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_VM_SERVICES_NMT_COMMON_HPP 26 #define SHARE_VM_SERVICES_NMT_COMMON_HPP 27 28 #include "memory/allocation.hpp" 29 #include "utilities/align.hpp" 30 #include "utilities/globalDefinitions.hpp" 31 32 #define CALC_OBJ_SIZE_IN_TYPE(obj, type) (align_up_(sizeof(obj), sizeof(type))/sizeof(type)) 33 34 // Native memory tracking level 35 enum NMT_TrackingLevel { 36 NMT_unknown = 0xFF, 37 NMT_off = 0x00, 38 NMT_minimal = 0x01, 39 NMT_summary = 0x02, 40 NMT_detail = 0x03 41 }; 42 43 // Number of stack frames to capture. This is a 44 // build time decision. 45 const int NMT_TrackingStackDepth = 4; 46 47 // A few common utilities for native memory tracking 48 class NMTUtil : AllStatic { 49 public: 50 // Map memory type to index flag_to_index(MEMFLAGS flag)51 static inline int flag_to_index(MEMFLAGS flag) { 52 const int index = flag & 0xff; 53 assert(index >= 0 && index < (int)mt_number_of_types, "Index out of bounds"); 54 return index; 55 } 56 57 // Map memory type to human readable name flag_to_name(MEMFLAGS flag)58 static const char* flag_to_name(MEMFLAGS flag) { 59 return _memory_type_names[flag_to_index(flag)]; 60 } 61 62 // Map an index to memory type index_to_flag(int index)63 static MEMFLAGS index_to_flag(int index) { 64 assert(index >= 0 && index < (int) mt_number_of_types, "Index out of bounds"); 65 return (MEMFLAGS)index; 66 } 67 68 // Memory size scale 69 static const char* scale_name(size_t scale); 70 static size_t scale_from_name(const char* scale); 71 72 // Translate memory size in specified scale amount_in_scale(size_t amount,size_t scale)73 static size_t amount_in_scale(size_t amount, size_t scale) { 74 return (amount + scale / 2) / scale; 75 } 76 private: 77 static const char* _memory_type_names[mt_number_of_types]; 78 }; 79 80 81 #endif 82