hotspot/src/share/vm/gc/shared/gcTrace.hpp
author pliden
Wed, 13 May 2015 15:16:06 +0200
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child 31344 2316eb7a0358
permissions -rw-r--r--
8079792: GC directory structure cleanup Reviewed-by: brutisso, stefank, david
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/*
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 * Copyright (c) 2012, 2015, 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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#ifndef SHARE_VM_GC_SHARED_GCTRACE_HPP
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#define SHARE_VM_GC_SHARED_GCTRACE_HPP
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#include "gc/shared/copyFailedInfo.hpp"
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#include "gc/shared/gcCause.hpp"
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#include "gc/shared/gcId.hpp"
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#include "gc/shared/gcName.hpp"
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#include "gc/shared/gcWhen.hpp"
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#include "memory/allocation.hpp"
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#include "memory/metaspace.hpp"
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#include "memory/referenceType.hpp"
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#include "utilities/macros.hpp"
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#include "utilities/ticks.hpp"
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#if INCLUDE_ALL_GCS
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#include "gc/g1/g1YCTypes.hpp"
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#endif
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class EvacuationInfo;
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class GCHeapSummary;
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class MetaspaceChunkFreeListSummary;
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class MetaspaceSummary;
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class PSHeapSummary;
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class ReferenceProcessorStats;
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class TimePartitions;
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class BoolObjectClosure;
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class SharedGCInfo VALUE_OBJ_CLASS_SPEC {
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  GCId _gc_id;
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  GCName _name;
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  GCCause::Cause _cause;
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  Ticks     _start_timestamp;
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  Ticks     _end_timestamp;
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  Tickspan  _sum_of_pauses;
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  Tickspan  _longest_pause;
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  SharedGCInfo(GCName name) :
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    _gc_id(GCId::undefined()),
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    _name(name),
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    _cause(GCCause::_last_gc_cause),
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    _start_timestamp(),
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    _end_timestamp(),
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    _sum_of_pauses(),
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    _longest_pause() {
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  }
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  void set_gc_id(GCId gc_id) { _gc_id = gc_id; }
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  const GCId& gc_id() const { return _gc_id; }
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  void set_start_timestamp(const Ticks& timestamp) { _start_timestamp = timestamp; }
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  const Ticks start_timestamp() const { return _start_timestamp; }
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  void set_end_timestamp(const Ticks& timestamp) { _end_timestamp = timestamp; }
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  const Ticks end_timestamp() const { return _end_timestamp; }
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  void set_name(GCName name) { _name = name; }
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  GCName name() const { return _name; }
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  void set_cause(GCCause::Cause cause) { _cause = cause; }
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  GCCause::Cause cause() const { return _cause; }
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  void set_sum_of_pauses(const Tickspan& duration) { _sum_of_pauses = duration; }
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  const Tickspan sum_of_pauses() const { return _sum_of_pauses; }
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  void set_longest_pause(const Tickspan& duration) { _longest_pause = duration; }
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  const Tickspan longest_pause() const { return _longest_pause; }
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};
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class ParallelOldGCInfo VALUE_OBJ_CLASS_SPEC {
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  void* _dense_prefix;
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  ParallelOldGCInfo() : _dense_prefix(NULL) {}
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  void report_dense_prefix(void* addr) {
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    _dense_prefix = addr;
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  }
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  void* dense_prefix() const { return _dense_prefix; }
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};
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#if INCLUDE_ALL_GCS
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class G1YoungGCInfo VALUE_OBJ_CLASS_SPEC {
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  G1YCType _type;
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  G1YoungGCInfo() : _type(G1YCTypeEndSentinel) {}
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  void set_type(G1YCType type) {
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    _type = type;
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  }
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  G1YCType type() const { return _type; }
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};
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#endif // INCLUDE_ALL_GCS
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class GCTracer : public ResourceObj {
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  SharedGCInfo _shared_gc_info;
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  void report_gc_start(GCCause::Cause cause, const Ticks& timestamp);
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  void report_gc_end(const Ticks& timestamp, TimePartitions* time_partitions);
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  void report_gc_heap_summary(GCWhen::Type when, const GCHeapSummary& heap_summary) const;
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  void report_metaspace_summary(GCWhen::Type when, const MetaspaceSummary& metaspace_summary) const;
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  void report_gc_reference_stats(const ReferenceProcessorStats& rp) const;
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  void report_object_count_after_gc(BoolObjectClosure* object_filter) NOT_SERVICES_RETURN;
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  bool has_reported_gc_start() const;
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  const GCId& gc_id() { return _shared_gc_info.gc_id(); }
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  GCTracer(GCName name) : _shared_gc_info(name) {}
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  void report_gc_start_impl(GCCause::Cause cause, const Ticks& timestamp);
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  virtual void report_gc_end_impl(const Ticks& timestamp, TimePartitions* time_partitions);
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  void send_garbage_collection_event() const;
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  void send_gc_heap_summary_event(GCWhen::Type when, const GCHeapSummary& heap_summary) const;
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  void send_meta_space_summary_event(GCWhen::Type when, const MetaspaceSummary& meta_space_summary) const;
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  void send_metaspace_chunk_free_list_summary(GCWhen::Type when, Metaspace::MetadataType mdtype, const MetaspaceChunkFreeListSummary& summary) const;
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  void send_reference_stats_event(ReferenceType type, size_t count) const;
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  void send_phase_events(TimePartitions* time_partitions) const;
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};
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class YoungGCTracer : public GCTracer {
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  static const uint UNSET_TENURING_THRESHOLD = (uint) -1;
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  uint _tenuring_threshold;
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  YoungGCTracer(GCName name) : GCTracer(name), _tenuring_threshold(UNSET_TENURING_THRESHOLD) {}
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  virtual void report_gc_end_impl(const Ticks& timestamp, TimePartitions* time_partitions);
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  void report_promotion_failed(const PromotionFailedInfo& pf_info) const;
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  void report_tenuring_threshold(const uint tenuring_threshold);
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  /*
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   * Methods for reporting Promotion in new or outside PLAB Events.
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   *
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   * The object age is always required as it is not certain that the mark word
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   * of the oop can be trusted at this stage.
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   *
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   * obj_size is the size of the promoted object in bytes.
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   *
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   * tenured should be true if the object has been promoted to the old
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   * space during this GC, if the object is copied to survivor space
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   * from young space or survivor space (aging) tenured should be false.
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   *
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   * plab_size is the size of the newly allocated PLAB in bytes.
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   */
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  bool should_report_promotion_in_new_plab_event() const;
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  bool should_report_promotion_outside_plab_event() const;
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  void report_promotion_in_new_plab_event(Klass* klass, size_t obj_size,
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                                          uint age, bool tenured,
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                                          size_t plab_size) const;
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  void report_promotion_outside_plab_event(Klass* klass, size_t obj_size,
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                                           uint age, bool tenured) const;
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  void send_young_gc_event() const;
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  void send_promotion_failed_event(const PromotionFailedInfo& pf_info) const;
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  bool should_send_promotion_in_new_plab_event() const;
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  bool should_send_promotion_outside_plab_event() const;
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  void send_promotion_in_new_plab_event(Klass* klass, size_t obj_size,
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                                        uint age, bool tenured,
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                                        size_t plab_size) const;
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  void send_promotion_outside_plab_event(Klass* klass, size_t obj_size,
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                                         uint age, bool tenured) const;
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};
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class OldGCTracer : public GCTracer {
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  OldGCTracer(GCName name) : GCTracer(name) {}
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  virtual void report_gc_end_impl(const Ticks& timestamp, TimePartitions* time_partitions);
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  void report_concurrent_mode_failure();
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  void send_old_gc_event() const;
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  void send_concurrent_mode_failure_event();
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};
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class ParallelOldTracer : public OldGCTracer {
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  ParallelOldGCInfo _parallel_old_gc_info;
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  ParallelOldTracer() : OldGCTracer(ParallelOld) {}
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  void report_dense_prefix(void* dense_prefix);
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  void report_gc_end_impl(const Ticks& timestamp, TimePartitions* time_partitions);
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  void send_parallel_old_event() const;
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};
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class SerialOldTracer : public OldGCTracer {
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  SerialOldTracer() : OldGCTracer(SerialOld) {}
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};
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class ParallelScavengeTracer : public YoungGCTracer {
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  ParallelScavengeTracer() : YoungGCTracer(ParallelScavenge) {}
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};
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class DefNewTracer : public YoungGCTracer {
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  DefNewTracer() : YoungGCTracer(DefNew) {}
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};
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class ParNewTracer : public YoungGCTracer {
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  ParNewTracer() : YoungGCTracer(ParNew) {}
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};
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#if INCLUDE_ALL_GCS
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class G1NewTracer : public YoungGCTracer {
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  G1YoungGCInfo _g1_young_gc_info;
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  G1NewTracer() : YoungGCTracer(G1New) {}
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  void report_yc_type(G1YCType type);
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  void report_gc_end_impl(const Ticks& timestamp, TimePartitions* time_partitions);
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  void report_evacuation_info(EvacuationInfo* info);
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  void report_evacuation_failed(EvacuationFailedInfo& ef_info);
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  void send_g1_young_gc_event();
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  void send_evacuation_info_event(EvacuationInfo* info);
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  void send_evacuation_failed_event(const EvacuationFailedInfo& ef_info) const;
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};
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#endif
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class CMSTracer : public OldGCTracer {
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  CMSTracer() : OldGCTracer(ConcurrentMarkSweep) {}
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};
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class G1OldTracer : public OldGCTracer {
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  G1OldTracer() : OldGCTracer(G1Old) {}
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};
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#endif // SHARE_VM_GC_SHARED_GCTRACE_HPP