coleenp@4037: /*
katleman@4376:  * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
coleenp@4037:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
coleenp@4037:  *
coleenp@4037:  * This code is free software; you can redistribute it and/or modify it
coleenp@4037:  * under the terms of the GNU General Public License version 2 only, as
coleenp@4037:  * published by the Free Software Foundation.
coleenp@4037:  *
coleenp@4037:  * This code is distributed in the hope that it will be useful, but WITHOUT
coleenp@4037:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
coleenp@4037:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
coleenp@4037:  * version 2 for more details (a copy is included in the LICENSE file that
coleenp@4037:  * accompanied this code).
coleenp@4037:  *
coleenp@4037:  * You should have received a copy of the GNU General Public License version
coleenp@4037:  * 2 along with this work; if not, write to the Free Software Foundation,
coleenp@4037:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
coleenp@4037:  *
coleenp@4037:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
coleenp@4037:  * or visit www.oracle.com if you need additional information or have any
coleenp@4037:  * questions.
coleenp@4037:  *
coleenp@4037:  */
coleenp@4037: 
coleenp@4037: #include "precompiled.hpp"
coleenp@4037: #include "memory/metaspaceCounters.hpp"
coleenp@4037: #include "memory/resourceArea.hpp"
ehelin@5531: #include "runtime/globals.hpp"
ehelin@5531: #include "runtime/perfData.hpp"
ehelin@4680: #include "utilities/exceptions.hpp"
coleenp@4037: 
ehelin@5531: class MetaspacePerfCounters: public CHeapObj<mtInternal> {
ehelin@5531:   friend class VMStructs;
ehelin@5531:   PerfVariable*      _capacity;
ehelin@5531:   PerfVariable*      _used;
ehelin@5531:   PerfVariable*      _max_capacity;
coleenp@4037: 
ehelin@5531:   PerfVariable* create_variable(const char *ns, const char *name, size_t value, TRAPS) {
ehelin@5531:     const char *path = PerfDataManager::counter_name(ns, name);
ehelin@5531:     return PerfDataManager::create_variable(SUN_GC, path, PerfData::U_Bytes, value, THREAD);
ehelin@5531:   }
ehelin@5531: 
ehelin@5531:   void create_constant(const char *ns, const char *name, size_t value, TRAPS) {
ehelin@5531:     const char *path = PerfDataManager::counter_name(ns, name);
ehelin@5531:     PerfDataManager::create_constant(SUN_GC, path, PerfData::U_Bytes, value, THREAD);
ehelin@5531:   }
ehelin@5531: 
ehelin@5531:  public:
ehelin@5531:   MetaspacePerfCounters(const char* ns, size_t min_capacity, size_t curr_capacity, size_t max_capacity, size_t used) {
ehelin@5531:     EXCEPTION_MARK;
ehelin@5531:     ResourceMark rm;
ehelin@5531: 
ehelin@5531:     create_constant(ns, "minCapacity", min_capacity, THREAD);
ehelin@5531:     _capacity = create_variable(ns, "capacity", curr_capacity, THREAD);
ehelin@5531:     _max_capacity = create_variable(ns, "maxCapacity", max_capacity, THREAD);
ehelin@5531:     _used = create_variable(ns, "used", used, THREAD);
ehelin@5531:   }
ehelin@5531: 
ehelin@5531:   void update(size_t capacity, size_t max_capacity, size_t used) {
ehelin@5531:     _capacity->set_value(capacity);
ehelin@5531:     _max_capacity->set_value(max_capacity);
ehelin@5531:     _used->set_value(used);
ehelin@5531:   }
ehelin@5531: };
ehelin@5531: 
ehelin@5531: MetaspacePerfCounters* MetaspaceCounters::_perf_counters = NULL;
ehelin@5531: 
ehelin@5531: size_t MetaspaceCounters::calculate_capacity() {
jmasa@5015:   // The total capacity is the sum of
jmasa@5015:   //   1) capacity of Metachunks in use by all Metaspaces
jmasa@5015:   //   2) unused space at the end of each Metachunk
jmasa@5015:   //   3) space in the freelist
jmasa@5015:   size_t total_capacity = MetaspaceAux::allocated_capacity_bytes()
jmasa@5015:     + MetaspaceAux::free_bytes() + MetaspaceAux::free_chunks_total_in_bytes();
jmasa@5015:   return total_capacity;
jmasa@5015: }
jmasa@5015: 
ehelin@5531: void MetaspaceCounters::initialize_performance_counters() {
coleenp@4037:   if (UsePerfData) {
ehelin@5531:     assert(_perf_counters == NULL, "Should only be initialized once");
ehelin@5531: 
coleenp@4037:     size_t min_capacity = MetaspaceAux::min_chunk_size();
ehelin@5531:     size_t capacity = calculate_capacity();
coleenp@4037:     size_t max_capacity = MetaspaceAux::reserved_in_bytes();
jmasa@5015:     size_t used = MetaspaceAux::allocated_used_bytes();
coleenp@4037: 
ehelin@5531:     _perf_counters = new MetaspacePerfCounters("metaspace", min_capacity, capacity, max_capacity, used);
coleenp@4037:   }
coleenp@4037: }
coleenp@4037: 
coleenp@4037: void MetaspaceCounters::update_performance_counters() {
coleenp@4037:   if (UsePerfData) {
ehelin@5531:     assert(_perf_counters != NULL, "Should be initialized");
ehelin@5531: 
ehelin@5531:     size_t capacity = calculate_capacity();
ehelin@5531:     size_t max_capacity = MetaspaceAux::reserved_in_bytes();
ehelin@5531:     size_t used = MetaspaceAux::allocated_used_bytes();
ehelin@5531: 
ehelin@5531:     _perf_counters->update(capacity, max_capacity, used);
coleenp@4037:   }
coleenp@4037: }
coleenp@4037: 
ehelin@5531: MetaspacePerfCounters* CompressedClassSpaceCounters::_perf_counters = NULL;
ehelin@5531: 
ehelin@5531: size_t CompressedClassSpaceCounters::calculate_capacity() {
ehelin@5531:     return MetaspaceAux::allocated_capacity_bytes(_class_type) +
ehelin@5531:            MetaspaceAux::free_bytes(_class_type) +
ehelin@5531:            MetaspaceAux::free_chunks_total_in_bytes(_class_type);
ehelin@5531: }
ehelin@5531: 
ehelin@5531: void CompressedClassSpaceCounters::update_performance_counters() {
ehelin@5694:   if (UsePerfData && UseCompressedClassPointers) {
ehelin@5531:     assert(_perf_counters != NULL, "Should be initialized");
ehelin@5531: 
ehelin@5531:     size_t capacity = calculate_capacity();
ehelin@5531:     size_t max_capacity = MetaspaceAux::reserved_in_bytes(_class_type);
ehelin@5531:     size_t used = MetaspaceAux::allocated_used_bytes(_class_type);
ehelin@5531: 
ehelin@5531:     _perf_counters->update(capacity, max_capacity, used);
ehelin@5531:   }
ehelin@5531: }
ehelin@5531: 
ehelin@5531: void CompressedClassSpaceCounters::initialize_performance_counters() {
ehelin@5531:   if (UsePerfData) {
ehelin@5531:     assert(_perf_counters == NULL, "Should only be initialized once");
ehelin@5531:     const char* ns = "compressedclassspace";
ehelin@5531: 
ehelin@5694:     if (UseCompressedClassPointers) {
ehelin@5531:       size_t min_capacity = MetaspaceAux::min_chunk_size();
ehelin@5531:       size_t capacity = calculate_capacity();
ehelin@5531:       size_t max_capacity = MetaspaceAux::reserved_in_bytes(_class_type);
ehelin@5531:       size_t used = MetaspaceAux::allocated_used_bytes(_class_type);
ehelin@5531: 
ehelin@5531:       _perf_counters = new MetaspacePerfCounters(ns, min_capacity, capacity, max_capacity, used);
ehelin@5531:     } else {
ehelin@5531:       _perf_counters = new MetaspacePerfCounters(ns, 0, 0, 0, 0);
ehelin@5531:     }
ehelin@5531:   }
ehelin@5531: }