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diff --git a/src/share/vm/gc_implementation/shared/gcTrace.hpp b/src/share/vm/gc_implementation/shared/gcTrace.hpp
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+/*
+ * Copyright (c) 2012, 2013, 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.
+ *
+ */
+
+#ifndef SHARE_VM_GC_IMPLEMENTATION_SHARED_GCTRACE_HPP
+#define SHARE_VM_GC_IMPLEMENTATION_SHARED_GCTRACE_HPP
+
+#include "gc_interface/gcCause.hpp"
+#include "gc_interface/gcName.hpp"
+#include "gc_implementation/shared/gcWhen.hpp"
+#include "gc_implementation/shared/copyFailedInfo.hpp"
+#include "memory/allocation.hpp"
+#include "memory/klassInfoClosure.hpp"
+#include "memory/referenceType.hpp"
+#if INCLUDE_ALL_GCS
+#include "gc_implementation/g1/g1YCTypes.hpp"
+#endif
+#include "utilities/macros.hpp"
+
+typedef uint GCId;
+
+class EvacuationInfo;
+class GCHeapSummary;
+class MetaspaceSummary;
+class PSHeapSummary;
+class ReferenceProcessorStats;
+class TimePartitions;
+class BoolObjectClosure;
+
+class SharedGCInfo VALUE_OBJ_CLASS_SPEC {
+  static const jlong UNSET_TIMESTAMP = -1;
+
+ public:
+  static const GCId UNSET_GCID = (GCId)-1;
+
+ private:
+  GCId _id;
+  GCName _name;
+  GCCause::Cause _cause;
+  jlong _start_timestamp;
+  jlong _end_timestamp;
+  jlong _sum_of_pauses;
+  jlong _longest_pause;
+
+ public:
+  SharedGCInfo(GCName name) : _id(UNSET_GCID), _name(name), _cause(GCCause::_last_gc_cause),
+      _start_timestamp(UNSET_TIMESTAMP), _end_timestamp(UNSET_TIMESTAMP), _sum_of_pauses(0), _longest_pause(0) {}
+
+  void set_id(GCId id) { _id = id; }
+  GCId id() const { return _id; }
+
+  void set_start_timestamp(jlong timestamp) { _start_timestamp = timestamp; }
+  jlong start_timestamp() const { return _start_timestamp; }
+
+  void set_end_timestamp(jlong timestamp) { _end_timestamp = timestamp; }
+  jlong end_timestamp() const { return _end_timestamp; }
+
+  void set_name(GCName name) { _name = name; }
+  GCName name() const { return _name; }
+
+  void set_cause(GCCause::Cause cause) { _cause = cause; }
+  GCCause::Cause cause() const { return _cause; }
+
+  void set_sum_of_pauses(jlong duration) { _sum_of_pauses = duration; }
+  jlong sum_of_pauses() const { return _sum_of_pauses; }
+
+  void set_longest_pause(jlong duration) { _longest_pause = duration; }
+  jlong longest_pause() const { return _longest_pause; }
+};
+
+class ParallelOldGCInfo VALUE_OBJ_CLASS_SPEC {
+  void* _dense_prefix;
+ public:
+  ParallelOldGCInfo() : _dense_prefix(NULL) {}
+  void report_dense_prefix(void* addr) {
+    _dense_prefix = addr;
+  }
+  void* dense_prefix() const { return _dense_prefix; }
+};
+
+#if INCLUDE_ALL_GCS
+
+class G1YoungGCInfo VALUE_OBJ_CLASS_SPEC {
+  G1YCType _type;
+ public:
+  G1YoungGCInfo() : _type(G1YCTypeEndSentinel) {}
+  void set_type(G1YCType type) {
+    _type = type;
+  }
+  G1YCType type() const { return _type; }
+};
+
+#endif // INCLUDE_ALL_GCS
+
+class GCTracer : public ResourceObj {
+  friend class ObjectCountEventSenderClosure;
+ protected:
+  SharedGCInfo _shared_gc_info;
+
+ public:
+  void report_gc_start(GCCause::Cause cause, jlong timestamp);
+  void report_gc_end(jlong timestamp, TimePartitions* time_partitions);
+  void report_gc_heap_summary(GCWhen::Type when, const GCHeapSummary& heap_summary, const MetaspaceSummary& meta_space_summary) const;
+  void report_gc_reference_stats(const ReferenceProcessorStats& rp) const;
+  void report_object_count_after_gc(BoolObjectClosure* object_filter) NOT_SERVICES_RETURN;
+
+  bool has_reported_gc_start() const;
+
+ protected:
+  GCTracer(GCName name) : _shared_gc_info(name) {}
+  virtual void report_gc_start_impl(GCCause::Cause cause, jlong timestamp);
+  virtual void report_gc_end_impl(jlong timestamp, TimePartitions* time_partitions);
+
+ private:
+  void send_garbage_collection_event() const;
+  void send_gc_heap_summary_event(GCWhen::Type when, const GCHeapSummary& heap_summary) const;
+  void send_meta_space_summary_event(GCWhen::Type when, const MetaspaceSummary& meta_space_summary) const;
+  void send_reference_stats_event(ReferenceType type, size_t count) const;
+  void send_phase_events(TimePartitions* time_partitions) const;
+  void send_object_count_after_gc_event(Klass* klass, jlong count, julong total_size) const NOT_SERVICES_RETURN;
+  bool should_send_object_count_after_gc_event() const;
+};
+
+class ObjectCountEventSenderClosure : public KlassInfoClosure {
+  GCTracer* _gc_tracer;
+  const double _size_threshold_percentage;
+  const size_t _total_size_in_words;
+ public:
+  ObjectCountEventSenderClosure(GCTracer* gc_tracer, size_t total_size_in_words) :
+    _gc_tracer(gc_tracer),
+    _size_threshold_percentage(ObjectCountCutOffPercent / 100),
+    _total_size_in_words(total_size_in_words)
+  {}
+  virtual void do_cinfo(KlassInfoEntry* entry);
+ protected:
+  virtual void send_event(KlassInfoEntry* entry);
+ private:
+  bool should_send_event(KlassInfoEntry* entry) const;
+};
+
+class YoungGCTracer : public GCTracer {
+  static const uint UNSET_TENURING_THRESHOLD = (uint) -1;
+
+  uint _tenuring_threshold;
+
+ protected:
+  YoungGCTracer(GCName name) : GCTracer(name), _tenuring_threshold(UNSET_TENURING_THRESHOLD) {}
+  virtual void report_gc_end_impl(jlong timestamp, TimePartitions* time_partitions);
+
+ public:
+  void report_promotion_failed(const PromotionFailedInfo& pf_info);
+  void report_tenuring_threshold(const uint tenuring_threshold);
+
+ private:
+  void send_young_gc_event() const;
+  void send_promotion_failed_event(const PromotionFailedInfo& pf_info) const;
+};
+
+class OldGCTracer : public GCTracer {
+ protected:
+  OldGCTracer(GCName name) : GCTracer(name) {}
+  virtual void report_gc_end_impl(jlong timestamp, TimePartitions* time_partitions);
+
+ public:
+  void report_concurrent_mode_failure();
+
+ private:
+  void send_old_gc_event() const;
+  void send_concurrent_mode_failure_event();
+};
+
+class ParallelOldTracer : public OldGCTracer {
+  ParallelOldGCInfo _parallel_old_gc_info;
+
+ public:
+  ParallelOldTracer() : OldGCTracer(ParallelOld) {}
+  void report_dense_prefix(void* dense_prefix);
+
+ protected:
+  void report_gc_end_impl(jlong timestamp, TimePartitions* time_partitions);
+
+ private:
+  void send_parallel_old_event() const;
+};
+
+class SerialOldTracer : public OldGCTracer {
+ public:
+  SerialOldTracer() : OldGCTracer(SerialOld) {}
+};
+
+class ParallelScavengeTracer : public YoungGCTracer {
+ public:
+  ParallelScavengeTracer() : YoungGCTracer(ParallelScavenge) {}
+};
+
+class DefNewTracer : public YoungGCTracer {
+ public:
+  DefNewTracer() : YoungGCTracer(DefNew) {}
+};
+
+class ParNewTracer : public YoungGCTracer {
+ public:
+  ParNewTracer() : YoungGCTracer(ParNew) {}
+};
+
+#if INCLUDE_ALL_GCS
+class G1NewTracer : public YoungGCTracer {
+  G1YoungGCInfo _g1_young_gc_info;
+
+ public:
+  G1NewTracer() : YoungGCTracer(G1New) {}
+
+  void report_yc_type(G1YCType type);
+  void report_gc_end_impl(jlong timestamp, TimePartitions* time_partitions);
+  void report_evacuation_info(EvacuationInfo* info);
+  void report_evacuation_failed(EvacuationFailedInfo& ef_info);
+
+ private:
+  void send_g1_young_gc_event();
+  void send_evacuation_info_event(EvacuationInfo* info);
+  void send_evacuation_failed_event(const EvacuationFailedInfo& ef_info) const;
+};
+#endif
+
+class CMSTracer : public OldGCTracer {
+ public:
+  CMSTracer() : OldGCTracer(ConcurrentMarkSweep) {}
+};
+
+class G1OldTracer : public OldGCTracer {
+ public:
+  G1OldTracer() : OldGCTracer(G1Old) {}
+};
+
+#endif // SHARE_VM_GC_IMPLEMENTATION_SHARED_GCTRACE_HPP