src/share/vm/gc_implementation/shared/gcTrace.hpp

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rev 4873 : 8015972: Refactor the sending of the object count after GC event


  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 #ifndef SHARE_VM_GC_IMPLEMENTATION_SHARED_GCTRACE_HPP
  26 #define SHARE_VM_GC_IMPLEMENTATION_SHARED_GCTRACE_HPP
  27 
  28 #include "gc_interface/gcCause.hpp"
  29 #include "gc_interface/gcName.hpp"
  30 #include "gc_implementation/shared/gcWhen.hpp"
  31 #include "gc_implementation/shared/copyFailedInfo.hpp"
  32 #include "memory/allocation.hpp"
  33 #include "memory/klassInfoClosure.hpp"
  34 #include "memory/referenceType.hpp"
  35 #if INCLUDE_ALL_GCS
  36 #include "gc_implementation/g1/g1YCTypes.hpp"
  37 #endif
  38 #include "utilities/macros.hpp"
  39 
  40 typedef uint GCId;
  41 
  42 class EvacuationInfo;
  43 class GCHeapSummary;
  44 class MetaspaceSummary;
  45 class PSHeapSummary;
  46 class ReferenceProcessorStats;
  47 class TimePartitions;
  48 class BoolObjectClosure;
  49 
  50 class SharedGCInfo VALUE_OBJ_CLASS_SPEC {
  51   static const jlong UNSET_TIMESTAMP = -1;
  52 
  53  public:


  96     _dense_prefix = addr;
  97   }
  98   void* dense_prefix() const { return _dense_prefix; }
  99 };
 100 
 101 #if INCLUDE_ALL_GCS
 102 
 103 class G1YoungGCInfo VALUE_OBJ_CLASS_SPEC {
 104   G1YCType _type;
 105  public:
 106   G1YoungGCInfo() : _type(G1YCTypeEndSentinel) {}
 107   void set_type(G1YCType type) {
 108     _type = type;
 109   }
 110   G1YCType type() const { return _type; }
 111 };
 112 
 113 #endif // INCLUDE_ALL_GCS
 114 
 115 class GCTracer : public ResourceObj {
 116   friend class ObjectCountEventSenderClosure;
 117  protected:
 118   SharedGCInfo _shared_gc_info;
 119 
 120  public:
 121   void report_gc_start(GCCause::Cause cause, jlong timestamp);
 122   void report_gc_end(jlong timestamp, TimePartitions* time_partitions);
 123   void report_gc_heap_summary(GCWhen::Type when, const GCHeapSummary& heap_summary, const MetaspaceSummary& meta_space_summary) const;
 124   void report_gc_reference_stats(const ReferenceProcessorStats& rp) const;
 125   void report_object_count_after_gc(BoolObjectClosure* object_filter) NOT_SERVICES_RETURN;
 126 
 127   bool has_reported_gc_start() const;
 128 
 129  protected:
 130   GCTracer(GCName name) : _shared_gc_info(name) {}
 131   virtual void report_gc_start_impl(GCCause::Cause cause, jlong timestamp);
 132   virtual void report_gc_end_impl(jlong timestamp, TimePartitions* time_partitions);
 133 
 134  private:
 135   void send_garbage_collection_event() const;
 136   void send_gc_heap_summary_event(GCWhen::Type when, const GCHeapSummary& heap_summary) const;
 137   void send_meta_space_summary_event(GCWhen::Type when, const MetaspaceSummary& meta_space_summary) const;
 138   void send_reference_stats_event(ReferenceType type, size_t count) const;
 139   void send_phase_events(TimePartitions* time_partitions) const;
 140   void send_object_count_after_gc_event(Klass* klass, jlong count, julong total_size) const NOT_SERVICES_RETURN;
 141   bool should_send_object_count_after_gc_event() const;
 142 };
 143 
 144 class ObjectCountEventSenderClosure : public KlassInfoClosure {
 145   GCTracer* _gc_tracer;
 146   const double _size_threshold_percentage;
 147   const size_t _total_size_in_words;
 148  public:
 149   ObjectCountEventSenderClosure(GCTracer* gc_tracer, size_t total_size_in_words) :
 150     _gc_tracer(gc_tracer),
 151     _size_threshold_percentage(ObjectCountCutOffPercent / 100),
 152     _total_size_in_words(total_size_in_words)
 153   {}
 154   virtual void do_cinfo(KlassInfoEntry* entry);
 155  protected:
 156   virtual void send_event(KlassInfoEntry* entry);
 157  private:
 158   bool should_send_event(KlassInfoEntry* entry) const;
 159 };
 160 
 161 class YoungGCTracer : public GCTracer {
 162   static const uint UNSET_TENURING_THRESHOLD = (uint) -1;
 163 
 164   uint _tenuring_threshold;
 165 
 166  protected:
 167   YoungGCTracer(GCName name) : GCTracer(name), _tenuring_threshold(UNSET_TENURING_THRESHOLD) {}
 168   virtual void report_gc_end_impl(jlong timestamp, TimePartitions* time_partitions);
 169 
 170  public:
 171   void report_promotion_failed(const PromotionFailedInfo& pf_info);
 172   void report_tenuring_threshold(const uint tenuring_threshold);
 173 
 174  private:
 175   void send_young_gc_event() const;
 176   void send_promotion_failed_event(const PromotionFailedInfo& pf_info) const;
 177 };
 178 




  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 #ifndef SHARE_VM_GC_IMPLEMENTATION_SHARED_GCTRACE_HPP
  26 #define SHARE_VM_GC_IMPLEMENTATION_SHARED_GCTRACE_HPP
  27 
  28 #include "gc_interface/gcCause.hpp"
  29 #include "gc_interface/gcName.hpp"
  30 #include "gc_implementation/shared/gcWhen.hpp"
  31 #include "gc_implementation/shared/copyFailedInfo.hpp"
  32 #include "memory/allocation.hpp"

  33 #include "memory/referenceType.hpp"
  34 #if INCLUDE_ALL_GCS
  35 #include "gc_implementation/g1/g1YCTypes.hpp"
  36 #endif
  37 #include "utilities/macros.hpp"
  38 
  39 typedef uint GCId;
  40 
  41 class EvacuationInfo;
  42 class GCHeapSummary;
  43 class MetaspaceSummary;
  44 class PSHeapSummary;
  45 class ReferenceProcessorStats;
  46 class TimePartitions;
  47 class BoolObjectClosure;
  48 
  49 class SharedGCInfo VALUE_OBJ_CLASS_SPEC {
  50   static const jlong UNSET_TIMESTAMP = -1;
  51 
  52  public:


  95     _dense_prefix = addr;
  96   }
  97   void* dense_prefix() const { return _dense_prefix; }
  98 };
  99 
 100 #if INCLUDE_ALL_GCS
 101 
 102 class G1YoungGCInfo VALUE_OBJ_CLASS_SPEC {
 103   G1YCType _type;
 104  public:
 105   G1YoungGCInfo() : _type(G1YCTypeEndSentinel) {}
 106   void set_type(G1YCType type) {
 107     _type = type;
 108   }
 109   G1YCType type() const { return _type; }
 110 };
 111 
 112 #endif // INCLUDE_ALL_GCS
 113 
 114 class GCTracer : public ResourceObj {

 115  protected:
 116   SharedGCInfo _shared_gc_info;
 117 
 118  public:
 119   void report_gc_start(GCCause::Cause cause, jlong timestamp);
 120   void report_gc_end(jlong timestamp, TimePartitions* time_partitions);
 121   void report_gc_heap_summary(GCWhen::Type when, const GCHeapSummary& heap_summary, const MetaspaceSummary& meta_space_summary) const;
 122   void report_gc_reference_stats(const ReferenceProcessorStats& rp) const;
 123   void report_object_count_after_gc(BoolObjectClosure* object_filter) NOT_SERVICES_RETURN;

 124   bool has_reported_gc_start() const;
 125 
 126  protected:
 127   GCTracer(GCName name) : _shared_gc_info(name) {}
 128   virtual void report_gc_start_impl(GCCause::Cause cause, jlong timestamp);
 129   virtual void report_gc_end_impl(jlong timestamp, TimePartitions* time_partitions);
 130 
 131  private:
 132   void send_garbage_collection_event() const;
 133   void send_gc_heap_summary_event(GCWhen::Type when, const GCHeapSummary& heap_summary) const;
 134   void send_meta_space_summary_event(GCWhen::Type when, const MetaspaceSummary& meta_space_summary) const;
 135   void send_reference_stats_event(ReferenceType type, size_t count) const;
 136   void send_phase_events(TimePartitions* time_partitions) const;



















 137 };
 138 
 139 class YoungGCTracer : public GCTracer {
 140   static const uint UNSET_TENURING_THRESHOLD = (uint) -1;
 141 
 142   uint _tenuring_threshold;
 143 
 144  protected:
 145   YoungGCTracer(GCName name) : GCTracer(name), _tenuring_threshold(UNSET_TENURING_THRESHOLD) {}
 146   virtual void report_gc_end_impl(jlong timestamp, TimePartitions* time_partitions);
 147 
 148  public:
 149   void report_promotion_failed(const PromotionFailedInfo& pf_info);
 150   void report_tenuring_threshold(const uint tenuring_threshold);
 151 
 152  private:
 153   void send_young_gc_event() const;
 154   void send_promotion_failed_event(const PromotionFailedInfo& pf_info) const;
 155 };
 156