1 /*

     2  * Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    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:

    54   static const GCId UNSET_GCID = (GCId)-1;

    55 

    56  private:

    57   GCId _id;

    58   GCName _name;

    59   GCCause::Cause _cause;

    60   jlong _start_timestamp;

    61   jlong _end_timestamp;

    62   jlong _sum_of_pauses;

    63   jlong _longest_pause;

    64 

    65  public:

    66   SharedGCInfo(GCName name) : _id(UNSET_GCID), _name(name), _cause(GCCause::_last_gc_cause),

    67       _start_timestamp(UNSET_TIMESTAMP), _end_timestamp(UNSET_TIMESTAMP), _sum_of_pauses(0), _longest_pause(0) {}

    68 

    69   void set_id(GCId id) { _id = id; }

    70   GCId id() const { return _id; }

    71 

    72   void set_start_timestamp(jlong timestamp) { _start_timestamp = timestamp; }

    73   jlong start_timestamp() const { return _start_timestamp; }

    74 

    75   void set_end_timestamp(jlong timestamp) { _end_timestamp = timestamp; }

    76   jlong end_timestamp() const { return _end_timestamp; }

    77 

    78   void set_name(GCName name) { _name = name; }

    79   GCName name() const { return _name; }

    80 

    81   void set_cause(GCCause::Cause cause) { _cause = cause; }

    82   GCCause::Cause cause() const { return _cause; }

    83 

    84   void set_sum_of_pauses(jlong duration) { _sum_of_pauses = duration; }

    85   jlong sum_of_pauses() const { return _sum_of_pauses; }

    86 

    87   void set_longest_pause(jlong duration) { _longest_pause = duration; }

    88   jlong longest_pause() const { return _longest_pause; }

    89 };

    90 

    91 class ParallelOldGCInfo VALUE_OBJ_CLASS_SPEC {

    92   void* _dense_prefix;

    93  public:

    94   ParallelOldGCInfo() : _dense_prefix(NULL) {}

    95   void report_dense_prefix(void* addr) {

    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 

   179 class OldGCTracer : public GCTracer {

   180  protected:

   181   OldGCTracer(GCName name) : GCTracer(name) {}

   182   virtual void report_gc_end_impl(jlong timestamp, TimePartitions* time_partitions);

   183 

   184  public:

   185   void report_concurrent_mode_failure();

   186 

   187  private:

   188   void send_old_gc_event() const;

   189   void send_concurrent_mode_failure_event();

   190 };

   191 

   192 class ParallelOldTracer : public OldGCTracer {

   193   ParallelOldGCInfo _parallel_old_gc_info;

   194 

   195  public:

   196   ParallelOldTracer() : OldGCTracer(ParallelOld) {}

   197   void report_dense_prefix(void* dense_prefix);

   198 

   199  protected:

   200   void report_gc_end_impl(jlong timestamp, TimePartitions* time_partitions);

   201 

   202  private:

   203   void send_parallel_old_event() const;

   204 };

   205 

   206 class SerialOldTracer : public OldGCTracer {

   207  public:

   208   SerialOldTracer() : OldGCTracer(SerialOld) {}

   209 };

   210 

   211 class ParallelScavengeTracer : public YoungGCTracer {

   212  public:

   213   ParallelScavengeTracer() : YoungGCTracer(ParallelScavenge) {}

   214 };

   215 

   216 class DefNewTracer : public YoungGCTracer {

   217  public:

   218   DefNewTracer() : YoungGCTracer(DefNew) {}

   219 };

   220 

   221 class ParNewTracer : public YoungGCTracer {

   222  public:

   223   ParNewTracer() : YoungGCTracer(ParNew) {}

   224 };

   225 

   226 #if INCLUDE_ALL_GCS

   227 class G1NewTracer : public YoungGCTracer {

   228   G1YoungGCInfo _g1_young_gc_info;

   229 

   230  public:

   231   G1NewTracer() : YoungGCTracer(G1New) {}

   232 

   233   void report_yc_type(G1YCType type);

   234   void report_gc_end_impl(jlong timestamp, TimePartitions* time_partitions);

   235   void report_evacuation_info(EvacuationInfo* info);

   236   void report_evacuation_failed(EvacuationFailedInfo& ef_info);

   237 

   238  private:

   239   void send_g1_young_gc_event();

   240   void send_evacuation_info_event(EvacuationInfo* info);

   241   void send_evacuation_failed_event(const EvacuationFailedInfo& ef_info) const;

   242 };

   243 #endif

   244 

   245 class CMSTracer : public OldGCTracer {

   246  public:

   247   CMSTracer() : OldGCTracer(ConcurrentMarkSweep) {}

   248 };

   249 

   250 class G1OldTracer : public OldGCTracer {

   251  public:

   252   G1OldTracer() : OldGCTracer(G1Old) {}

   253 };

   254 

   255 #endif // SHARE_VM_GC_IMPLEMENTATION_SHARED_GCTRACE_HPP