jdk

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/*
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 * Copyright (c) 2015, 2019, Red Hat, Inc. 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 "gc/shared/collectorCounters.hpp"
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#include "gc/shared/generationCounters.hpp"
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#include "gc/shared/hSpaceCounters.hpp"
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#include "gc/shenandoah/shenandoahMonitoringSupport.hpp"
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#include "gc/shenandoah/shenandoahHeap.inline.hpp"
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#include "gc/shenandoah/shenandoahHeapRegionCounters.hpp"
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#include "memory/metaspaceCounters.hpp"
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#include "services/memoryService.hpp"
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class ShenandoahYoungGenerationCounters : public GenerationCounters {
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public:
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  ShenandoahYoungGenerationCounters() :
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          GenerationCounters("Young", 0, 0, 0, (size_t)0, (size_t)0) {};
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  void update_all() override {
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    // no update
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  }
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};
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class ShenandoahGenerationCounters : public GenerationCounters {
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private:
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  ShenandoahHeap* _heap;
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public:
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  explicit ShenandoahGenerationCounters(ShenandoahHeap* heap) :
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          GenerationCounters("Heap", 1, 1, heap->initial_capacity(), heap->max_capacity(), heap->capacity()),
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          _heap(heap)
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  {};
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  void update_all() override {
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    _current_size->set_value(_heap->capacity());
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  }
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};
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ShenandoahMonitoringSupport::ShenandoahMonitoringSupport(ShenandoahHeap* heap) :
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        _partial_counters(nullptr),
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        _full_counters(nullptr),
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        _counters_update_task(this)
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{
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  // Collection counters do not fit Shenandoah very well.
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  // We record partial cycles as "young", and full cycles (including full STW GC) as "old".
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  _partial_counters  = new CollectorCounters("Shenandoah partial", 0);
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  _full_counters     = new CollectorCounters("Shenandoah full",    1);
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  // We report young gen as unused.
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  _young_counters = new ShenandoahYoungGenerationCounters();
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  _heap_counters  = new ShenandoahGenerationCounters(heap);
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  _space_counters = new HSpaceCounters(_heap_counters->name_space(), "Heap", 0, heap->max_capacity(), heap->initial_capacity());
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  _heap_region_counters = new ShenandoahHeapRegionCounters();
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  _counters_update_task.enroll();
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}
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CollectorCounters* ShenandoahMonitoringSupport::stw_collection_counters() {
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  return _full_counters;
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}
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CollectorCounters* ShenandoahMonitoringSupport::full_stw_collection_counters() {
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  return _full_counters;
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}
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CollectorCounters* ShenandoahMonitoringSupport::concurrent_collection_counters() {
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  return _full_counters;
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}
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CollectorCounters* ShenandoahMonitoringSupport::partial_collection_counters() {
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  return _partial_counters;
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}
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void ShenandoahMonitoringSupport::update_counters() {
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  MemoryService::track_memory_usage();
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  if (UsePerfData) {
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    ShenandoahHeap* heap = ShenandoahHeap::heap();
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    size_t used = heap->used();
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    size_t capacity = heap->max_capacity();
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    _heap_counters->update_all();
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    _space_counters->update_all(capacity, used);
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    _heap_region_counters->update();
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    MetaspaceCounters::update_performance_counters();
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  }
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}
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void ShenandoahMonitoringSupport::notify_heap_changed() {
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  _counters_update_task.notify_heap_changed();
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}
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void ShenandoahMonitoringSupport::set_forced_counters_update(bool value) {
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  _counters_update_task.set_forced_counters_update(value);
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}
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void ShenandoahMonitoringSupport::handle_force_counters_update() {
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  _counters_update_task.handle_force_counters_update();
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}
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void ShenandoahPeriodicCountersUpdateTask::task() {
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  handle_force_counters_update();
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  handle_counters_update();
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}
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void ShenandoahPeriodicCountersUpdateTask::handle_counters_update() {
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  if (_do_counters_update.is_set()) {
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    _do_counters_update.unset();
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    _monitoring_support->update_counters();
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  }
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}
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void ShenandoahPeriodicCountersUpdateTask::handle_force_counters_update() {
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  if (_force_counters_update.is_set()) {
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    _do_counters_update.unset(); // reset these too, we do update now!
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    _monitoring_support->update_counters();
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  }
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}
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void ShenandoahPeriodicCountersUpdateTask::notify_heap_changed() {
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  if (_do_counters_update.is_unset()) {
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    _do_counters_update.set();
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  }
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}
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void ShenandoahPeriodicCountersUpdateTask::set_forced_counters_update(bool value) {
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  _force_counters_update.set_cond(value);
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}
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