1 /*

     2  * Copyright (c) 2019, 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 #include "precompiled.hpp"

    26 #include "gc/g1/g1EvacuationInfo.hpp"

    27 #include "gc/g1/g1Trace.hpp"

    28 #include "gc/g1/g1YCTypes.hpp"

    29 #include "gc/shared/gcHeapSummary.hpp"

    30 #include "jfr/jfrEvents.hpp"

    31 

    32 void G1NewTracer::report_yc_type(G1YCType type) {

    33   _g1_young_gc_info.set_type(type);

    34 }

    35 

    36 void G1NewTracer::report_gc_end_impl(const Ticks& timestamp, TimePartitions* time_partitions) {

    37   YoungGCTracer::report_gc_end_impl(timestamp, time_partitions);

    38   send_g1_young_gc_event();

    39 }

    40 

    41 void G1NewTracer::report_evacuation_info(G1EvacuationInfo* info) {

    42   send_evacuation_info_event(info);

    43 }

    44 

    45 void G1NewTracer::report_evacuation_failed(EvacuationFailedInfo& ef_info) {

    46   send_evacuation_failed_event(ef_info);

    47   ef_info.reset();

    48 }

    49 

    50 void G1NewTracer::report_evacuation_statistics(const G1EvacSummary& young_summary, const G1EvacSummary& old_summary) const {

    51   send_young_evacuation_statistics(young_summary);

    52   send_old_evacuation_statistics(old_summary);

    53 }

    54 

    55 void G1NewTracer::report_basic_ihop_statistics(size_t threshold,

    56                                                size_t target_ccupancy,

    57                                                size_t current_occupancy,

    58                                                size_t last_allocation_size,

    59                                                double last_allocation_duration,

    60                                                double last_marking_length) {

    61   send_basic_ihop_statistics(threshold,

    62                              target_ccupancy,

    63                              current_occupancy,

    64                              last_allocation_size,

    65                              last_allocation_duration,

    66                              last_marking_length);

    67 }

    68 

    69 void G1NewTracer::report_adaptive_ihop_statistics(size_t threshold,

    70                                                   size_t internal_target_occupancy,

    71                                                   size_t current_occupancy,

    72                                                   size_t additional_buffer_size,

    73                                                   double predicted_allocation_rate,

    74                                                   double predicted_marking_length,

    75                                                   bool prediction_active) {

    76   send_adaptive_ihop_statistics(threshold,

    77                                 internal_target_occupancy,

    78                                 additional_buffer_size,

    79                                 current_occupancy,

    80                                 predicted_allocation_rate,

    81                                 predicted_marking_length,

    82                                 prediction_active);

    83 }

    84 

    85 void G1NewTracer::send_g1_young_gc_event() {

    86   EventG1GarbageCollection e(UNTIMED);

    87   if (e.should_commit()) {

    88     e.set_gcId(GCId::current());

    89     e.set_type(_g1_young_gc_info.type());

    90     e.set_starttime(_shared_gc_info.start_timestamp());

    91     e.set_endtime(_shared_gc_info.end_timestamp());

    92     e.commit();

    93   }

    94 }

    95 

    96 void G1NewTracer::send_evacuation_info_event(G1EvacuationInfo* info) {

    97   EventEvacuationInformation e;

    98   if (e.should_commit()) {

    99     e.set_gcId(GCId::current());

   100     e.set_cSetRegions(info->collectionset_regions());

   101     e.set_cSetUsedBefore(info->collectionset_used_before());

   102     e.set_cSetUsedAfter(info->collectionset_used_after());

   103     e.set_allocationRegions(info->allocation_regions());

   104     e.set_allocationRegionsUsedBefore(info->alloc_regions_used_before());

   105     e.set_allocationRegionsUsedAfter(info->alloc_regions_used_before() + info->bytes_copied());

   106     e.set_bytesCopied(info->bytes_copied());

   107     e.set_regionsFreed(info->regions_freed());

   108     e.commit();

   109   }

   110 }

   111 

   112 void G1NewTracer::send_evacuation_failed_event(const EvacuationFailedInfo& ef_info) const {

   113   EventEvacuationFailed e;

   114   if (e.should_commit()) {

   115     // Create JFR structured failure data

   116     JfrStructCopyFailed evac_failed;

   117     evac_failed.set_objectCount(ef_info.failed_count());

   118     evac_failed.set_firstSize(ef_info.first_size());

   119     evac_failed.set_smallestSize(ef_info.smallest_size());

   120     evac_failed.set_totalSize(ef_info.total_size());

   121     // Add to the event

   122     e.set_gcId(GCId::current());

   123     e.set_evacuationFailed(evac_failed);

   124     e.commit();

   125   }

   126 }

   127 

   128 static JfrStructG1EvacuationStatistics

   129 create_g1_evacstats(unsigned gcid, const G1EvacSummary& summary) {

   130   JfrStructG1EvacuationStatistics s;

   131   s.set_gcId(gcid);

   132   s.set_allocated(summary.allocated() * HeapWordSize);

   133   s.set_wasted(summary.wasted() * HeapWordSize);

   134   s.set_used(summary.used() * HeapWordSize);

   135   s.set_undoWaste(summary.undo_wasted() * HeapWordSize);

   136   s.set_regionEndWaste(summary.region_end_waste() * HeapWordSize);

   137   s.set_regionsRefilled(summary.regions_filled());

   138   s.set_directAllocated(summary.direct_allocated() * HeapWordSize);

   139   s.set_failureUsed(summary.failure_used() * HeapWordSize);

   140   s.set_failureWaste(summary.failure_waste() * HeapWordSize);

   141   return s;

   142 }

   143 

   144 void G1NewTracer::send_young_evacuation_statistics(const G1EvacSummary& summary) const {

   145   EventG1EvacuationYoungStatistics surv_evt;

   146   if (surv_evt.should_commit()) {

   147     surv_evt.set_statistics(create_g1_evacstats(GCId::current(), summary));

   148     surv_evt.commit();

   149   }

   150 }

   151 

   152 void G1NewTracer::send_old_evacuation_statistics(const G1EvacSummary& summary) const {

   153   EventG1EvacuationOldStatistics old_evt;

   154   if (old_evt.should_commit()) {

   155     old_evt.set_statistics(create_g1_evacstats(GCId::current(), summary));

   156     old_evt.commit();

   157   }

   158 }

   159 

   160 void G1NewTracer::send_basic_ihop_statistics(size_t threshold,

   161                                              size_t target_occupancy,

   162                                              size_t current_occupancy,

   163                                              size_t last_allocation_size,

   164                                              double last_allocation_duration,

   165                                              double last_marking_length) {

   166   EventG1BasicIHOP evt;

   167   if (evt.should_commit()) {

   168     evt.set_gcId(GCId::current());

   169     evt.set_threshold(threshold);

   170     evt.set_targetOccupancy(target_occupancy);

   171     evt.set_thresholdPercentage(target_occupancy > 0 ? ((double)threshold / target_occupancy) : 0.0);

   172     evt.set_currentOccupancy(current_occupancy);

   173     evt.set_recentMutatorAllocationSize(last_allocation_size);

   174     evt.set_recentMutatorDuration(last_allocation_duration * MILLIUNITS);

   175     evt.set_recentAllocationRate(last_allocation_duration != 0.0 ? last_allocation_size / last_allocation_duration : 0.0);

   176     evt.set_lastMarkingDuration(last_marking_length * MILLIUNITS);

   177     evt.commit();

   178   }

   179 }

   180 

   181 void G1NewTracer::send_adaptive_ihop_statistics(size_t threshold,

   182                                                 size_t internal_target_occupancy,

   183                                                 size_t current_occupancy,

   184                                                 size_t additional_buffer_size,

   185                                                 double predicted_allocation_rate,

   186                                                 double predicted_marking_length,

   187                                                 bool prediction_active) {

   188   EventG1AdaptiveIHOP evt;

   189   if (evt.should_commit()) {

   190     evt.set_gcId(GCId::current());

   191     evt.set_threshold(threshold);

   192     evt.set_thresholdPercentage(internal_target_occupancy > 0 ? ((double)threshold / internal_target_occupancy) : 0.0);

   193     evt.set_ihopTargetOccupancy(internal_target_occupancy);

   194     evt.set_currentOccupancy(current_occupancy);

   195     evt.set_additionalBufferSize(additional_buffer_size);

   196     evt.set_predictedAllocationRate(predicted_allocation_rate);

   197     evt.set_predictedMarkingDuration(predicted_marking_length * MILLIUNITS);

   198     evt.set_predictionActive(prediction_active);

   199     evt.commit();

   200   }

   201 }

   202 

   203 void G1OldTracer::report_gc_start_impl(GCCause::Cause cause, const Ticks& timestamp) {

   204   _shared_gc_info.set_start_timestamp(timestamp);

   205 }

   206 

   207 void G1OldTracer::set_gc_cause(GCCause::Cause cause) {

   208   _shared_gc_info.set_cause(cause);

   209 }

   210 

   211 void G1MMUTracer::report_mmu(double time_slice_sec, double gc_time_sec, double max_time_sec) {

   212   send_g1_mmu_event(time_slice_sec * MILLIUNITS,

   213                     gc_time_sec * MILLIUNITS,

   214                     max_time_sec * MILLIUNITS);

   215 }

   216 

   217 void G1MMUTracer::send_g1_mmu_event(double time_slice_ms, double gc_time_ms, double max_time_ms) {

   218   EventG1MMU e;

   219   if (e.should_commit()) {

   220     e.set_gcId(GCId::current());

   221     e.set_timeSlice(time_slice_ms);

   222     e.set_gcTime(gc_time_ms);

   223     e.set_pauseTarget(max_time_ms);

   224     e.commit();

   225   }

   226 }