Mercurial > jdk8-mips64-public > hotspot / file revision

 /*

  * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.

  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

  *

  * This code is free software; you can redistribute it and/or modify it

  * under the terms of the GNU General Public License version 2 only, as

  * published by the Free Software Foundation.

  *

  * This code is distributed in the hope that it will be useful, but WITHOUT

  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

  * version 2 for more details (a copy is included in the LICENSE file that

  * accompanied this code).

  *

  * You should have received a copy of the GNU General Public License version

  * 2 along with this work; if not, write to the Free Software Foundation,

  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

  *

  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

  * or visit www.oracle.com if you need additional information or have any

  * questions.

  *

  */

 #include "precompiled.hpp"

 #include "memory/metaspaceCounters.hpp"

 #include "memory/resourceArea.hpp"

 #include "runtime/globals.hpp"

 #include "runtime/perfData.hpp"

 #include "utilities/exceptions.hpp"

 class MetaspacePerfCounters: public CHeapObj<mtInternal> {

   friend class VMStructs;

   PerfVariable*      _capacity;

   PerfVariable*      _used;

   PerfVariable*      _max_capacity;

   PerfVariable* create_variable(const char *ns, const char *name, size_t value, TRAPS) {

     const char *path = PerfDataManager::counter_name(ns, name);

     return PerfDataManager::create_variable(SUN_GC, path, PerfData::U_Bytes, value, THREAD);

   }

   void create_constant(const char *ns, const char *name, size_t value, TRAPS) {

     const char *path = PerfDataManager::counter_name(ns, name);

     PerfDataManager::create_constant(SUN_GC, path, PerfData::U_Bytes, value, THREAD);

   }

  public:

   MetaspacePerfCounters(const char* ns, size_t min_capacity, size_t curr_capacity, size_t max_capacity, size_t used) {

     EXCEPTION_MARK;

     ResourceMark rm;

     create_constant(ns, "minCapacity", min_capacity, THREAD);

     _capacity = create_variable(ns, "capacity", curr_capacity, THREAD);

     _max_capacity = create_variable(ns, "maxCapacity", max_capacity, THREAD);

     _used = create_variable(ns, "used", used, THREAD);

   }

   void update(size_t capacity, size_t max_capacity, size_t used) {

     _capacity->set_value(capacity);

     _max_capacity->set_value(max_capacity);

     _used->set_value(used);

   }

 };

 MetaspacePerfCounters* MetaspaceCounters::_perf_counters = NULL;

 size_t MetaspaceCounters::calculate_capacity() {

   // The total capacity is the sum of

   //   1) capacity of Metachunks in use by all Metaspaces

   //   2) unused space at the end of each Metachunk

   //   3) space in the freelist

   size_t total_capacity = MetaspaceAux::allocated_capacity_bytes()

     + MetaspaceAux::free_bytes() + MetaspaceAux::free_chunks_total_in_bytes();

   return total_capacity;

 }

 void MetaspaceCounters::initialize_performance_counters() {

   if (UsePerfData) {

     assert(_perf_counters == NULL, "Should only be initialized once");

     size_t min_capacity = MetaspaceAux::min_chunk_size();

     size_t capacity = calculate_capacity();

     size_t max_capacity = MetaspaceAux::reserved_in_bytes();

     size_t used = MetaspaceAux::allocated_used_bytes();

     _perf_counters = new MetaspacePerfCounters("metaspace", min_capacity, capacity, max_capacity, used);

   }

 }

 void MetaspaceCounters::update_performance_counters() {

   if (UsePerfData) {

     assert(_perf_counters != NULL, "Should be initialized");

     size_t capacity = calculate_capacity();

     size_t max_capacity = MetaspaceAux::reserved_in_bytes();

     size_t used = MetaspaceAux::allocated_used_bytes();

     _perf_counters->update(capacity, max_capacity, used);

   }

 }

 MetaspacePerfCounters* CompressedClassSpaceCounters::_perf_counters = NULL;

 size_t CompressedClassSpaceCounters::calculate_capacity() {

     return MetaspaceAux::allocated_capacity_bytes(_class_type) +

            MetaspaceAux::free_bytes(_class_type) +

            MetaspaceAux::free_chunks_total_in_bytes(_class_type);

 }

 void CompressedClassSpaceCounters::update_performance_counters() {

   if (UsePerfData && UseCompressedClassPointers) {

     assert(_perf_counters != NULL, "Should be initialized");

     size_t capacity = calculate_capacity();

     size_t max_capacity = MetaspaceAux::reserved_in_bytes(_class_type);

     size_t used = MetaspaceAux::allocated_used_bytes(_class_type);

     _perf_counters->update(capacity, max_capacity, used);

   }

 }

 void CompressedClassSpaceCounters::initialize_performance_counters() {

   if (UsePerfData) {

     assert(_perf_counters == NULL, "Should only be initialized once");

     const char* ns = "compressedclassspace";

     if (UseCompressedClassPointers) {

       size_t min_capacity = MetaspaceAux::min_chunk_size();

       size_t capacity = calculate_capacity();

       size_t max_capacity = MetaspaceAux::reserved_in_bytes(_class_type);

       size_t used = MetaspaceAux::allocated_used_bytes(_class_type);

       _perf_counters = new MetaspacePerfCounters(ns, min_capacity, capacity, max_capacity, used);

     } else {

       _perf_counters = new MetaspacePerfCounters(ns, 0, 0, 0, 0);

     }

   }

 }