jdk8-mips64-public/hotspot: src/share/vm/gc_implementation/g1/g1GCPhaseTimes.hpp@e864cc14ca75 (annotated)

src/share/vm/gc_implementation/g1/g1GCPhaseTimes.hpp@e864cc14ca75 (annotated)

src/share/vm/gc_implementation/g1/g1GCPhaseTimes.hpp

Tue, 19 Mar 2013 00:57:39 -0700

author: johnc
date: Tue, 19 Mar 2013 00:57:39 -0700
changeset 4788: e864cc14ca75
parent 4475: 7df93f7c14a5
child 5078: 194f52aa2f23
permissions: -rw-r--r--

8009940: G1: assert(_finger == _heap_end) failed, concurrentMark.cpp:809
Summary: Skip reference processing if the global marking stack overflows during remark. Refactor and rename set_phase(); move code that sets the concurrency level into its own routine. Do not call set_phase() from within parallel reference processing; use the concurrency level routine instead. The marking state should only set reset by CMTask[0] during the concurrent phase of the marking cycle; if an overflow occurs at any stage during the remark, the marking state will be reset after reference processing.
Reviewed-by: brutisso, jmasa

 /*
  * Copyright (c) 2012, 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_G1_G1GCPHASETIMESLOG_HPP
 #define SHARE_VM_GC_IMPLEMENTATION_G1_G1GCPHASETIMESLOG_HPP
 #include "memory/allocation.hpp"
 #include "gc_interface/gcCause.hpp"
 template <class T>
 class WorkerDataArray  : public CHeapObj<mtGC> {
   T*          _data;
   uint        _length;
   const char* _print_format;
   bool        _print_sum;
   NOT_PRODUCT(static const T _uninitialized;)
   // We are caching the sum and average to only have to calculate them once.
   // This is not done in an MT-safe way. It is intetened to allow single
   // threaded code to call sum() and average() multiple times in any order
   // without having to worry about the cost.
   bool   _has_new_data;
   T      _sum;
   double _average;
  public:
   WorkerDataArray(uint length, const char* print_format, bool print_sum = true) :
   _length(length), _print_format(print_format), _print_sum(print_sum), _has_new_data(true) {
     assert(length > 0, "Must have some workers to store data for");
     _data = NEW_C_HEAP_ARRAY(T, _length, mtGC);
   }
   ~WorkerDataArray() {
     FREE_C_HEAP_ARRAY(T, _data, mtGC);
   }
   void set(uint worker_i, T value) {
     assert(worker_i < _length, err_msg("Worker %d is greater than max: %d", worker_i, _length));
     assert(_data[worker_i] == (T)-1, err_msg("Overwriting data for worker %d", worker_i));
     _data[worker_i] = value;
     _has_new_data = true;
   }
   T get(uint worker_i) {
     assert(worker_i < _length, err_msg("Worker %d is greater than max: %d", worker_i, _length));
     assert(_data[worker_i] != (T)-1, err_msg("No data to add to for worker %d", worker_i));
     return _data[worker_i];
   }
   void add(uint worker_i, T value) {
     assert(worker_i < _length, err_msg("Worker %d is greater than max: %d", worker_i, _length));
     assert(_data[worker_i] != (T)-1, err_msg("No data to add to for worker %d", worker_i));
     _data[worker_i] += value;
     _has_new_data = true;
   }
   double average(){
     if (_has_new_data) {
       calculate_totals();
     }
     return _average;
   }
   T sum() {
     if (_has_new_data) {
       calculate_totals();
     }
     return _sum;
   }
   void print(int level, const char* title);
   void reset() PRODUCT_RETURN;
   void verify() PRODUCT_RETURN;
  private:
   void calculate_totals(){
     _sum = (T)0;
     for (uint i = 0; i < _length; ++i) {
       _sum += _data[i];
     }
     _average = (double)_sum / (double)_length;
     _has_new_data = false;
   }
 };
 class G1GCPhaseTimes : public CHeapObj<mtGC> {
  private:
   uint _active_gc_threads;
   uint _max_gc_threads;
   WorkerDataArray<double> _last_gc_worker_start_times_ms;
   WorkerDataArray<double> _last_ext_root_scan_times_ms;
   WorkerDataArray<double> _last_satb_filtering_times_ms;
   WorkerDataArray<double> _last_update_rs_times_ms;
   WorkerDataArray<int>    _last_update_rs_processed_buffers;
   WorkerDataArray<double> _last_scan_rs_times_ms;
   WorkerDataArray<double> _last_obj_copy_times_ms;
   WorkerDataArray<double> _last_termination_times_ms;
   WorkerDataArray<size_t> _last_termination_attempts;
   WorkerDataArray<double> _last_gc_worker_end_times_ms;
   WorkerDataArray<double> _last_gc_worker_times_ms;
   WorkerDataArray<double> _last_gc_worker_other_times_ms;
   double _cur_collection_par_time_ms;
   double _cur_collection_code_root_fixup_time_ms;
   double _cur_clear_ct_time_ms;
   double _cur_ref_proc_time_ms;
   double _cur_ref_enq_time_ms;
   // Card Table Count Cache stats
   double _min_clear_cc_time_ms;         // min
   double _max_clear_cc_time_ms;         // max
   double _cur_clear_cc_time_ms;         // clearing time during current pause
   double _cum_clear_cc_time_ms;         // cummulative clearing time
   jlong  _num_cc_clears;                // number of times the card count cache has been cleared
   double _cur_collection_start_sec;
   double _root_region_scan_wait_time_ms;
   double _recorded_young_cset_choice_time_ms;
   double _recorded_non_young_cset_choice_time_ms;
   double _recorded_young_free_cset_time_ms;
   double _recorded_non_young_free_cset_time_ms;
   double _cur_verify_before_time_ms;
   double _cur_verify_after_time_ms;
   // Helper methods for detailed logging
   void print_stats(int level, const char* str, double value);
   void print_stats(int level, const char* str, double value, int workers);
  public:
   G1GCPhaseTimes(uint max_gc_threads);
   void note_gc_start(uint active_gc_threads);
   void note_gc_end();
   void print(double pause_time_sec);
   void record_gc_worker_start_time(uint worker_i, double ms) {
     _last_gc_worker_start_times_ms.set(worker_i, ms);
   }
   void record_ext_root_scan_time(uint worker_i, double ms) {
     _last_ext_root_scan_times_ms.set(worker_i, ms);
   }
   void record_satb_filtering_time(uint worker_i, double ms) {
     _last_satb_filtering_times_ms.set(worker_i, ms);
   }
   void record_update_rs_time(uint worker_i, double ms) {
     _last_update_rs_times_ms.set(worker_i, ms);
   }
   void record_update_rs_processed_buffers(uint worker_i, int processed_buffers) {
     _last_update_rs_processed_buffers.set(worker_i, processed_buffers);
   }
   void record_scan_rs_time(uint worker_i, double ms) {
     _last_scan_rs_times_ms.set(worker_i, ms);
   }
   void record_obj_copy_time(uint worker_i, double ms) {
     _last_obj_copy_times_ms.set(worker_i, ms);
   }
   void add_obj_copy_time(uint worker_i, double ms) {
     _last_obj_copy_times_ms.add(worker_i, ms);
   }
   void record_termination(uint worker_i, double ms, size_t attempts) {
     _last_termination_times_ms.set(worker_i, ms);
     _last_termination_attempts.set(worker_i, attempts);
   }
   void record_gc_worker_end_time(uint worker_i, double ms) {
     _last_gc_worker_end_times_ms.set(worker_i, ms);
   }
   void record_clear_ct_time(double ms) {
     _cur_clear_ct_time_ms = ms;
   }
   void record_par_time(double ms) {
     _cur_collection_par_time_ms = ms;
   }
   void record_code_root_fixup_time(double ms) {
     _cur_collection_code_root_fixup_time_ms = ms;
   }
   void record_ref_proc_time(double ms) {
     _cur_ref_proc_time_ms = ms;
   }
   void record_ref_enq_time(double ms) {
     _cur_ref_enq_time_ms = ms;
   }
   void record_root_region_scan_wait_time(double time_ms) {
     _root_region_scan_wait_time_ms = time_ms;
   }
   void record_cc_clear_time_ms(double ms);
   void record_young_free_cset_time_ms(double time_ms) {
     _recorded_young_free_cset_time_ms = time_ms;
   }
   void record_non_young_free_cset_time_ms(double time_ms) {
     _recorded_non_young_free_cset_time_ms = time_ms;
   }
   void record_young_cset_choice_time_ms(double time_ms) {
     _recorded_young_cset_choice_time_ms = time_ms;
   }
   void record_non_young_cset_choice_time_ms(double time_ms) {
     _recorded_non_young_cset_choice_time_ms = time_ms;
   }
   void record_cur_collection_start_sec(double time_ms) {
     _cur_collection_start_sec = time_ms;
   }
   void record_verify_before_time_ms(double time_ms) {
     _cur_verify_before_time_ms = time_ms;
   }
   void record_verify_after_time_ms(double time_ms) {
     _cur_verify_after_time_ms = time_ms;
   }
   double accounted_time_ms();
   double cur_collection_start_sec() {
     return _cur_collection_start_sec;
   }
   double cur_collection_par_time_ms() {
     return _cur_collection_par_time_ms;
   }
   double cur_clear_ct_time_ms() {
     return _cur_clear_ct_time_ms;
   }
   double root_region_scan_wait_time_ms() {
     return _root_region_scan_wait_time_ms;
   }
   double young_cset_choice_time_ms() {
     return _recorded_young_cset_choice_time_ms;
   }
   double young_free_cset_time_ms() {
     return _recorded_young_free_cset_time_ms;
   }
   double non_young_cset_choice_time_ms() {
     return _recorded_non_young_cset_choice_time_ms;
   }
   double non_young_free_cset_time_ms() {
     return _recorded_non_young_free_cset_time_ms;
   }
   double average_last_update_rs_time() {
     return _last_update_rs_times_ms.average();
   }
   int sum_last_update_rs_processed_buffers() {
     return _last_update_rs_processed_buffers.sum();
   }
   double average_last_scan_rs_time(){
     return _last_scan_rs_times_ms.average();
   }
   double average_last_obj_copy_time() {
     return _last_obj_copy_times_ms.average();
   }
   double average_last_termination_time() {
     return _last_termination_times_ms.average();
   }
   double average_last_ext_root_scan_time() {
     return _last_ext_root_scan_times_ms.average();
   }
   double average_last_satb_filtering_times_ms() {
     return _last_satb_filtering_times_ms.average();
   }
 };
 #endif // SHARE_VM_GC_IMPLEMENTATION_G1_G1GCPHASETIMESLOG_HPP

Mercurial > jdk8-mips64-public > hotspot / annotate

src/share/vm/gc_implementation/g1/g1GCPhaseTimes.hpp@e864cc14ca75 (annotated)

src/share/vm/gc_implementation/g1/g1GCPhaseTimes.hpp