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

Wed, 31 Jul 2019 14:28:51 -0400

author
kbarrett
date
Wed, 31 Jul 2019 14:28:51 -0400
changeset 9787
9f28a4cac6d9
parent 6904
0982ec23da03
child 7535
7ae4e26cb1e0
child 9858
b985cbb00e68
permissions
-rw-r--r--

8048556: Unnecessary GCLocker-initiated young GCs
Summary: Fixed recognition of unnecessary GCLocker collections.
Reviewed-by: pliden, tschatzl
Contributed-by: johnc@azul.com

     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  */
    25 #ifndef SHARE_VM_GC_IMPLEMENTATION_SHARED_GCTRACE_HPP
    26 #define SHARE_VM_GC_IMPLEMENTATION_SHARED_GCTRACE_HPP
    28 #include "gc_interface/gcCause.hpp"
    29 #include "gc_interface/gcName.hpp"
    30 #include "gc_implementation/shared/gcId.hpp"
    31 #include "gc_implementation/shared/gcWhen.hpp"
    32 #include "gc_implementation/shared/copyFailedInfo.hpp"
    33 #include "memory/allocation.hpp"
    34 #include "memory/metaspace.hpp"
    35 #include "memory/referenceType.hpp"
    36 #if INCLUDE_ALL_GCS
    37 #include "gc_implementation/g1/g1YCTypes.hpp"
    38 #endif
    39 #include "utilities/macros.hpp"
    40 #include "utilities/ticks.hpp"
    43 class EvacuationInfo;
    44 class GCHeapSummary;
    45 class MetaspaceChunkFreeListSummary;
    46 class MetaspaceSummary;
    47 class PSHeapSummary;
    48 class ReferenceProcessorStats;
    49 class TimePartitions;
    50 class BoolObjectClosure;
    52 class SharedGCInfo VALUE_OBJ_CLASS_SPEC {
    53  private:
    54   GCId _gc_id;
    55   GCName _name;
    56   GCCause::Cause _cause;
    57   Ticks     _start_timestamp;
    58   Ticks     _end_timestamp;
    59   Tickspan  _sum_of_pauses;
    60   Tickspan  _longest_pause;
    62  public:
    63   SharedGCInfo(GCName name) :
    64     _gc_id(GCId::undefined()),
    65     _name(name),
    66     _cause(GCCause::_last_gc_cause),
    67     _start_timestamp(),
    68     _end_timestamp(),
    69     _sum_of_pauses(),
    70     _longest_pause() {
    71   }
    73   void set_gc_id(GCId gc_id) { _gc_id = gc_id; }
    74   const GCId& gc_id() const { return _gc_id; }
    76   void set_start_timestamp(const Ticks& timestamp) { _start_timestamp = timestamp; }
    77   const Ticks start_timestamp() const { return _start_timestamp; }
    79   void set_end_timestamp(const Ticks& timestamp) { _end_timestamp = timestamp; }
    80   const Ticks end_timestamp() const { return _end_timestamp; }
    82   void set_name(GCName name) { _name = name; }
    83   GCName name() const { return _name; }
    85   void set_cause(GCCause::Cause cause) { _cause = cause; }
    86   GCCause::Cause cause() const { return _cause; }
    88   void set_sum_of_pauses(const Tickspan& duration) { _sum_of_pauses = duration; }
    89   const Tickspan sum_of_pauses() const { return _sum_of_pauses; }
    91   void set_longest_pause(const Tickspan& duration) { _longest_pause = duration; }
    92   const Tickspan longest_pause() const { return _longest_pause; }
    93 };
    95 class ParallelOldGCInfo VALUE_OBJ_CLASS_SPEC {
    96   void* _dense_prefix;
    97  public:
    98   ParallelOldGCInfo() : _dense_prefix(NULL) {}
    99   void report_dense_prefix(void* addr) {
   100     _dense_prefix = addr;
   101   }
   102   void* dense_prefix() const { return _dense_prefix; }
   103 };
   105 #if INCLUDE_ALL_GCS
   107 class G1YoungGCInfo VALUE_OBJ_CLASS_SPEC {
   108   G1YCType _type;
   109  public:
   110   G1YoungGCInfo() : _type(G1YCTypeEndSentinel) {}
   111   void set_type(G1YCType type) {
   112     _type = type;
   113   }
   114   G1YCType type() const { return _type; }
   115 };
   117 #endif // INCLUDE_ALL_GCS
   119 class GCTracer : public ResourceObj {
   120  protected:
   121   SharedGCInfo _shared_gc_info;
   123  public:
   124   void report_gc_start(GCCause::Cause cause, const Ticks& timestamp);
   125   void report_gc_end(const Ticks& timestamp, TimePartitions* time_partitions);
   126   void report_gc_heap_summary(GCWhen::Type when, const GCHeapSummary& heap_summary) const;
   127   void report_metaspace_summary(GCWhen::Type when, const MetaspaceSummary& metaspace_summary) const;
   128   void report_gc_reference_stats(const ReferenceProcessorStats& rp) const;
   129   void report_object_count_after_gc(BoolObjectClosure* object_filter) NOT_SERVICES_RETURN;
   130   bool has_reported_gc_start() const;
   131   const GCId& gc_id() { return _shared_gc_info.gc_id(); }
   133  protected:
   134   GCTracer(GCName name) : _shared_gc_info(name) {}
   135   void report_gc_start_impl(GCCause::Cause cause, const Ticks& timestamp);
   136   virtual void report_gc_end_impl(const Ticks& timestamp, TimePartitions* time_partitions);
   138  private:
   139   void send_garbage_collection_event() const;
   140   void send_gc_heap_summary_event(GCWhen::Type when, const GCHeapSummary& heap_summary) const;
   141   void send_meta_space_summary_event(GCWhen::Type when, const MetaspaceSummary& meta_space_summary) const;
   142   void send_metaspace_chunk_free_list_summary(GCWhen::Type when, Metaspace::MetadataType mdtype, const MetaspaceChunkFreeListSummary& summary) const;
   143   void send_reference_stats_event(ReferenceType type, size_t count) const;
   144   void send_phase_events(TimePartitions* time_partitions) const;
   145 };
   147 class YoungGCTracer : public GCTracer {
   148   static const uint UNSET_TENURING_THRESHOLD = (uint) -1;
   150   uint _tenuring_threshold;
   152  protected:
   153   YoungGCTracer(GCName name) : GCTracer(name), _tenuring_threshold(UNSET_TENURING_THRESHOLD) {}
   154   virtual void report_gc_end_impl(const Ticks& timestamp, TimePartitions* time_partitions);
   156  public:
   157   void report_promotion_failed(const PromotionFailedInfo& pf_info);
   158   void report_tenuring_threshold(const uint tenuring_threshold);
   160  private:
   161   void send_young_gc_event() const;
   162   void send_promotion_failed_event(const PromotionFailedInfo& pf_info) const;
   163 };
   165 class OldGCTracer : public GCTracer {
   166  protected:
   167   OldGCTracer(GCName name) : GCTracer(name) {}
   168   virtual void report_gc_end_impl(const Ticks& timestamp, TimePartitions* time_partitions);
   170  public:
   171   void report_concurrent_mode_failure();
   173  private:
   174   void send_old_gc_event() const;
   175   void send_concurrent_mode_failure_event();
   176 };
   178 class ParallelOldTracer : public OldGCTracer {
   179   ParallelOldGCInfo _parallel_old_gc_info;
   181  public:
   182   ParallelOldTracer() : OldGCTracer(ParallelOld) {}
   183   void report_dense_prefix(void* dense_prefix);
   185  protected:
   186   void report_gc_end_impl(const Ticks& timestamp, TimePartitions* time_partitions);
   188  private:
   189   void send_parallel_old_event() const;
   190 };
   192 class SerialOldTracer : public OldGCTracer {
   193  public:
   194   SerialOldTracer() : OldGCTracer(SerialOld) {}
   195 };
   197 class ParallelScavengeTracer : public YoungGCTracer {
   198  public:
   199   ParallelScavengeTracer() : YoungGCTracer(ParallelScavenge) {}
   200 };
   202 class DefNewTracer : public YoungGCTracer {
   203  public:
   204   DefNewTracer() : YoungGCTracer(DefNew) {}
   205 };
   207 class ParNewTracer : public YoungGCTracer {
   208  public:
   209   ParNewTracer() : YoungGCTracer(ParNew) {}
   210 };
   212 #if INCLUDE_ALL_GCS
   213 class G1NewTracer : public YoungGCTracer {
   214   G1YoungGCInfo _g1_young_gc_info;
   216  public:
   217   G1NewTracer() : YoungGCTracer(G1New) {}
   219   void report_yc_type(G1YCType type);
   220   void report_gc_end_impl(const Ticks& timestamp, TimePartitions* time_partitions);
   221   void report_evacuation_info(EvacuationInfo* info);
   222   void report_evacuation_failed(EvacuationFailedInfo& ef_info);
   224  private:
   225   void send_g1_young_gc_event();
   226   void send_evacuation_info_event(EvacuationInfo* info);
   227   void send_evacuation_failed_event(const EvacuationFailedInfo& ef_info) const;
   228 };
   229 #endif
   231 class CMSTracer : public OldGCTracer {
   232  public:
   233   CMSTracer() : OldGCTracer(ConcurrentMarkSweep) {}
   234 };
   236 class G1OldTracer : public OldGCTracer {
   237  public:
   238   G1OldTracer() : OldGCTracer(G1Old) {}
   239 };
   241 #endif // SHARE_VM_GC_IMPLEMENTATION_SHARED_GCTRACE_HPP

mercurial