140 lines
5.2 KiB
C++
140 lines
5.2 KiB
C++
/*
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* Copyright (c) 2012, 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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#include "precompiled.hpp"
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#include "memory/metaspaceCounters.hpp"
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#include "memory/resourceArea.hpp"
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#include "runtime/globals.hpp"
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#include "runtime/perfData.hpp"
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#include "utilities/exceptions.hpp"
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class MetaspacePerfCounters: public CHeapObj<mtInternal> {
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friend class VMStructs;
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PerfVariable* _capacity;
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PerfVariable* _used;
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PerfVariable* _max_capacity;
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PerfVariable* create_variable(const char *ns, const char *name, size_t value, TRAPS) {
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const char *path = PerfDataManager::counter_name(ns, name);
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return PerfDataManager::create_variable(SUN_GC, path, PerfData::U_Bytes, value, THREAD);
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}
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void create_constant(const char *ns, const char *name, size_t value, TRAPS) {
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const char *path = PerfDataManager::counter_name(ns, name);
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PerfDataManager::create_constant(SUN_GC, path, PerfData::U_Bytes, value, THREAD);
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}
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public:
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MetaspacePerfCounters(const char* ns, size_t min_capacity, size_t curr_capacity, size_t max_capacity, size_t used) {
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EXCEPTION_MARK;
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ResourceMark rm;
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create_constant(ns, "minCapacity", min_capacity, THREAD);
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_capacity = create_variable(ns, "capacity", curr_capacity, THREAD);
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_max_capacity = create_variable(ns, "maxCapacity", max_capacity, THREAD);
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_used = create_variable(ns, "used", used, THREAD);
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}
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void update(size_t capacity, size_t max_capacity, size_t used) {
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_capacity->set_value(capacity);
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_max_capacity->set_value(max_capacity);
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_used->set_value(used);
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}
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};
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MetaspacePerfCounters* MetaspaceCounters::_perf_counters = NULL;
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size_t MetaspaceCounters::calculate_capacity() {
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// The total capacity is the sum of
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// 1) capacity of Metachunks in use by all Metaspaces
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// 2) unused space at the end of each Metachunk
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// 3) space in the freelist
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size_t total_capacity = MetaspaceAux::allocated_capacity_bytes()
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+ MetaspaceAux::free_bytes() + MetaspaceAux::free_chunks_total_in_bytes();
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return total_capacity;
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}
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void MetaspaceCounters::initialize_performance_counters() {
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if (UsePerfData) {
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assert(_perf_counters == NULL, "Should only be initialized once");
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size_t min_capacity = MetaspaceAux::min_chunk_size();
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size_t capacity = calculate_capacity();
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size_t max_capacity = MetaspaceAux::reserved_in_bytes();
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size_t used = MetaspaceAux::allocated_used_bytes();
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_perf_counters = new MetaspacePerfCounters("metaspace", min_capacity, capacity, max_capacity, used);
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}
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}
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void MetaspaceCounters::update_performance_counters() {
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if (UsePerfData) {
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assert(_perf_counters != NULL, "Should be initialized");
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size_t capacity = calculate_capacity();
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size_t max_capacity = MetaspaceAux::reserved_in_bytes();
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size_t used = MetaspaceAux::allocated_used_bytes();
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_perf_counters->update(capacity, max_capacity, used);
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}
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}
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MetaspacePerfCounters* CompressedClassSpaceCounters::_perf_counters = NULL;
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size_t CompressedClassSpaceCounters::calculate_capacity() {
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return MetaspaceAux::allocated_capacity_bytes(_class_type) +
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MetaspaceAux::free_bytes(_class_type) +
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MetaspaceAux::free_chunks_total_in_bytes(_class_type);
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}
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void CompressedClassSpaceCounters::update_performance_counters() {
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if (UsePerfData && UseCompressedKlassPointers) {
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assert(_perf_counters != NULL, "Should be initialized");
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size_t capacity = calculate_capacity();
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size_t max_capacity = MetaspaceAux::reserved_in_bytes(_class_type);
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size_t used = MetaspaceAux::allocated_used_bytes(_class_type);
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_perf_counters->update(capacity, max_capacity, used);
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}
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}
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void CompressedClassSpaceCounters::initialize_performance_counters() {
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if (UsePerfData) {
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assert(_perf_counters == NULL, "Should only be initialized once");
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const char* ns = "compressedclassspace";
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if (UseCompressedKlassPointers) {
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size_t min_capacity = MetaspaceAux::min_chunk_size();
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size_t capacity = calculate_capacity();
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size_t max_capacity = MetaspaceAux::reserved_in_bytes(_class_type);
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size_t used = MetaspaceAux::allocated_used_bytes(_class_type);
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_perf_counters = new MetaspacePerfCounters(ns, min_capacity, capacity, max_capacity, used);
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} else {
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_perf_counters = new MetaspacePerfCounters(ns, 0, 0, 0, 0);
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}
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}
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}
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