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