82 lines
2.6 KiB
C++
82 lines
2.6 KiB
C++
/*
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* Copyright (c) 2014, 2017, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*
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*/
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#ifndef SHARE_VM_SERVICES_NMT_COMMON_HPP
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#define SHARE_VM_SERVICES_NMT_COMMON_HPP
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#include "memory/allocation.hpp"
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#include "utilities/align.hpp"
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#include "utilities/globalDefinitions.hpp"
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#define CALC_OBJ_SIZE_IN_TYPE(obj, type) (align_up_(sizeof(obj), sizeof(type))/sizeof(type))
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// Native memory tracking level
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enum NMT_TrackingLevel {
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NMT_unknown = 0xFF,
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NMT_off = 0x00,
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NMT_minimal = 0x01,
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NMT_summary = 0x02,
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NMT_detail = 0x03
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};
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// Number of stack frames to capture. This is a
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// build time decision.
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const int NMT_TrackingStackDepth = 4;
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// A few common utilities for native memory tracking
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class NMTUtil : AllStatic {
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public:
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// Map memory type to index
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static inline int flag_to_index(MEMFLAGS flag) {
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const int index = flag & 0xff;
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assert(index >= 0 && index < (int)mt_number_of_types, "Index out of bounds");
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return index;
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}
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// Map memory type to human readable name
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static const char* flag_to_name(MEMFLAGS flag) {
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return _memory_type_names[flag_to_index(flag)];
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}
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// Map an index to memory type
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static MEMFLAGS index_to_flag(int index) {
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assert(index >= 0 && index < (int) mt_number_of_types, "Index out of bounds");
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return (MEMFLAGS)index;
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}
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// Memory size scale
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static const char* scale_name(size_t scale);
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static size_t scale_from_name(const char* scale);
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// Translate memory size in specified scale
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static size_t amount_in_scale(size_t amount, size_t scale) {
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return (amount + scale / 2) / scale;
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}
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private:
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static const char* _memory_type_names[mt_number_of_types];
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};
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#endif
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