jdk8-mips64-public/hotspot: src/share/vm/gc_implementation/parallelScavenge/psGCAdaptivePolicyCounters.hpp@4dfb2df418f2 (annotated)

src/share/vm/gc_implementation/parallelScavenge/psGCAdaptivePolicyCounters.hpp@4dfb2df418f2 (annotated)

src/share/vm/gc_implementation/parallelScavenge/psGCAdaptivePolicyCounters.hpp

Thu, 22 Sep 2011 10:57:37 -0700

author: johnc
date: Thu, 22 Sep 2011 10:57:37 -0700
changeset 3175: 4dfb2df418f2
parent 2314: f95d63e2154a
child 5192: 14d3f71f831d
permissions: -rw-r--r--

6484982: G1: process references during evacuation pauses
Summary: G1 now uses two reference processors - one is used by concurrent marking and the other is used by STW GCs (both full and incremental evacuation pauses). In an evacuation pause, the reference processor is embedded into the closures used to scan objects. Doing so causes causes reference objects to be 'discovered' by the reference processor. At the end of the evacuation pause, these discovered reference objects are processed - preserving (and copying) referent objects (and their reachable graphs) as appropriate.
Reviewed-by: ysr, jwilhelm, brutisso, stefank, tonyp

 /*
  * Copyright (c) 2003, 2010, 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
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 #ifndef SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_PSGCADAPTIVEPOLICYCOUNTERS_HPP
 #define SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_PSGCADAPTIVEPOLICYCOUNTERS_HPP
 #include "gc_implementation/parallelScavenge/psAdaptiveSizePolicy.hpp"
 #include "gc_implementation/shared/gcAdaptivePolicyCounters.hpp"
 #include "gc_implementation/shared/gcPolicyCounters.hpp"
 // PSGCAdaptivePolicyCounters is a holder class for performance counters
 // that track the data and decisions for the ergonomics policy for the
 // parallel scavenge collector.
 class PSGCAdaptivePolicyCounters : public GCAdaptivePolicyCounters {
   friend class VMStructs;
  private:
   // survivor space vs. tenuring threshold
   PerfVariable* _old_promo_size;
   PerfVariable* _old_eden_size;
   PerfVariable* _avg_promoted_avg_counter;
   PerfVariable* _avg_promoted_dev_counter;
   PerfVariable* _avg_promoted_padded_avg_counter;
   PerfVariable* _avg_pretenured_padded_avg;
   // young gen vs. old gen sizing
   PerfVariable* _avg_major_pause;
   PerfVariable* _avg_major_interval;
   PerfVariable* _live_space;
   PerfVariable* _free_space;
   PerfVariable* _avg_base_footprint;
   PerfVariable* _gc_overhead_limit_exceeded_counter;
   PerfVariable* _live_at_last_full_gc_counter;
   PerfVariable* _old_capacity;
   PerfVariable* _boundary_moved;
   PerfVariable* _change_old_gen_for_min_pauses;
   PerfVariable* _change_young_gen_for_maj_pauses_counter;
   PerfVariable* _major_pause_old_slope;
   PerfVariable* _minor_pause_old_slope;
   PerfVariable* _major_pause_young_slope;
   PerfVariable* _scavenge_skipped;
   PerfVariable* _full_follows_scavenge;
   // Use this time stamp if the gc time stamp is not available.
   TimeStamp     _counter_time_stamp;
  protected:
   PSAdaptiveSizePolicy* ps_size_policy() {
     return (PSAdaptiveSizePolicy*)_size_policy;
   }
  public:
   PSGCAdaptivePolicyCounters(const char* name, int collectors, int generations,
                              PSAdaptiveSizePolicy* size_policy);
   inline void update_old_capacity(size_t size_in_bytes) {
     _old_capacity->set_value(size_in_bytes);
   }
   inline void update_old_eden_size(size_t old_size) {
     _old_eden_size->set_value(old_size);
   }
   inline void update_old_promo_size(size_t old_size) {
     _old_promo_size->set_value(old_size);
   }
   inline void update_boundary_moved(int size_in_bytes) {
     _boundary_moved->set_value(size_in_bytes);
   }
   inline void update_avg_promoted_avg() {
     _avg_promoted_avg_counter->set_value(
       (jlong)(ps_size_policy()->avg_promoted()->average())
     );
   }
   inline void update_avg_promoted_dev() {
     _avg_promoted_dev_counter->set_value(
       (jlong)(ps_size_policy()->avg_promoted()->deviation())
     );
   }
   inline void update_avg_promoted_padded_avg() {
     _avg_promoted_padded_avg_counter->set_value(
       (jlong)(ps_size_policy()->avg_promoted()->padded_average())
     );
   }
   inline void update_avg_pretenured_padded_avg() {
     _avg_pretenured_padded_avg->set_value(
       (jlong)(ps_size_policy()->_avg_pretenured->padded_average())
     );
   }
   inline void update_change_young_gen_for_maj_pauses() {
     _change_young_gen_for_maj_pauses_counter->set_value(
       ps_size_policy()->change_young_gen_for_maj_pauses());
   }
   inline void update_change_old_gen_for_min_pauses() {
     _change_old_gen_for_min_pauses->set_value(
       ps_size_policy()->change_old_gen_for_min_pauses());
   }
   // compute_generation_free_space() statistics
   inline void update_avg_major_pause() {
     _avg_major_pause->set_value(
       (jlong)(ps_size_policy()->_avg_major_pause->average() * 1000.0)
     );
   }
   inline void update_avg_major_interval() {
     _avg_major_interval->set_value(
       (jlong)(ps_size_policy()->_avg_major_interval->average() * 1000.0)
     );
   }
   inline void update_major_gc_cost_counter() {
     _major_gc_cost_counter->set_value(
       (jlong)(ps_size_policy()->major_gc_cost() * 100.0)
     );
   }
   inline void update_mutator_cost_counter() {
     _mutator_cost_counter->set_value(
       (jlong)(ps_size_policy()->mutator_cost() * 100.0)
     );
   }
   inline void update_live_space() {
     _live_space->set_value(ps_size_policy()->live_space());
   }
   inline void update_free_space() {
     _free_space->set_value(ps_size_policy()->free_space());
   }
   inline void update_avg_base_footprint() {
     _avg_base_footprint->set_value(
       (jlong)(ps_size_policy()->avg_base_footprint()->average())
     );
   }
   inline void update_avg_old_live() {
     _avg_old_live_counter->set_value(
       (jlong)(ps_size_policy()->avg_old_live()->average())
     );
   }
   // Scale up all the slopes
   inline void update_major_pause_old_slope() {
     _major_pause_old_slope->set_value(
       (jlong)(ps_size_policy()->major_pause_old_slope() * 1000)
     );
   }
   inline void update_minor_pause_old_slope() {
     _minor_pause_old_slope->set_value(
       (jlong)(ps_size_policy()->minor_pause_old_slope() * 1000)
     );
   }
   inline void update_major_pause_young_slope() {
     _major_pause_young_slope->set_value(
       (jlong)(ps_size_policy()->major_pause_young_slope() * 1000)
     );
   }
   inline void update_gc_overhead_limit_exceeded_counter() {
     _gc_overhead_limit_exceeded_counter->set_value(
       (jlong) ps_size_policy()->gc_overhead_limit_exceeded());
   }
   inline void update_live_at_last_full_gc_counter() {
     _live_at_last_full_gc_counter->set_value(
       (jlong)(ps_size_policy()->live_at_last_full_gc()));
   }
   inline void update_scavenge_skipped(int cause) {
     _scavenge_skipped->set_value(cause);
   }
   inline void update_full_follows_scavenge(int event) {
     _full_follows_scavenge->set_value(event);
   }
   // Update all the counters that can be updated from the size policy.
   // This should be called after all policy changes have been made
   // and reflected internall in the size policy.
   void update_counters_from_policy();
   // Update counters that can be updated from fields internal to the
   // counter or from globals.  This is distinguished from counters
   // that are updated via input parameters.
   void update_counters();
   virtual GCPolicyCounters::Name kind() const {
     return GCPolicyCounters::PSGCAdaptivePolicyCountersKind;
   }
 };
 #endif // SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_PSGCADAPTIVEPOLICYCOUNTERS_HPP

Mercurial > jdk8-mips64-public > hotspot / annotate

src/share/vm/gc_implementation/parallelScavenge/psGCAdaptivePolicyCounters.hpp@4dfb2df418f2 (annotated)

src/share/vm/gc_implementation/parallelScavenge/psGCAdaptivePolicyCounters.hpp