jdk8-mips64-public/hotspot: src/share/vm/gc_implementation/g1/g1GCPhaseTimes.cpp@8a5ea0a9ccc4 (annotated)

src/share/vm/gc_implementation/g1/g1GCPhaseTimes.cpp@8a5ea0a9ccc4 (annotated)

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

Sat, 06 Oct 2012 01:17:44 -0700

author: johnc
date: Sat, 06 Oct 2012 01:17:44 -0700
changeset 4173: 8a5ea0a9ccc4
parent 4097: 5baec2e69518
child 4475: 7df93f7c14a5
permissions: -rw-r--r--

7127708: G1: change task num types from int to uint in concurrent mark
Summary: Change the type of various task num fields, parameters etc to unsigned and rename them to be more consistent with the other collectors. Code changes were also reviewed by Vitaly Davidovich.
Reviewed-by: johnc
Contributed-by: Kaushik Srenevasan <kaushik@twitter.com>

 /*
  * 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.
  *
  */
 #include "precompiled.hpp"
 #include "gc_implementation/g1/g1CollectedHeap.inline.hpp"
 #include "gc_implementation/g1/g1GCPhaseTimes.hpp"
 #include "gc_implementation/g1/g1Log.hpp"
 // Helper class for avoiding interleaved logging
 class LineBuffer: public StackObj {
 private:
   static const int BUFFER_LEN = 1024;
   static const int INDENT_CHARS = 3;
   char _buffer[BUFFER_LEN];
   int _indent_level;
   int _cur;
   void vappend(const char* format, va_list ap) {
     int res = vsnprintf(&_buffer[_cur], BUFFER_LEN - _cur, format, ap);
     if (res != -1) {
       _cur += res;
     } else {
       DEBUG_ONLY(warning("buffer too small in LineBuffer");)
       _buffer[BUFFER_LEN -1] = 0;
       _cur = BUFFER_LEN; // vsnprintf above should not add to _buffer if we are called again
     }
   }
 public:
   explicit LineBuffer(int indent_level): _indent_level(indent_level), _cur(0) {
     for (; (_cur < BUFFER_LEN && _cur < (_indent_level * INDENT_CHARS)); _cur++) {
       _buffer[_cur] = ' ';
     }
   }
 #ifndef PRODUCT
   ~LineBuffer() {
     assert(_cur == _indent_level * INDENT_CHARS, "pending data in buffer - append_and_print_cr() not called?");
   }
 #endif
   void append(const char* format, ...) {
     va_list ap;
     va_start(ap, format);
     vappend(format, ap);
     va_end(ap);
   }
   void append_and_print_cr(const char* format, ...) {
     va_list ap;
     va_start(ap, format);
     vappend(format, ap);
     va_end(ap);
     gclog_or_tty->print_cr("%s", _buffer);
     _cur = _indent_level * INDENT_CHARS;
   }
 };
 template <class T>
 void WorkerDataArray<T>::print(int level, const char* title) {
   if (_length == 1) {
     // No need for min, max, average and sum for only one worker
     LineBuffer buf(level);
     buf.append("[%s:  ", title);
     buf.append(_print_format, _data[0]);
     buf.append_and_print_cr("]");
     return;
   }
   T min = _data[0];
   T max = _data[0];
   T sum = 0;
   LineBuffer buf(level);
   buf.append("[%s:", title);
   for (uint i = 0; i < _length; ++i) {
     T val = _data[i];
     min = MIN2(val, min);
     max = MAX2(val, max);
     sum += val;
     if (G1Log::finest()) {
       buf.append("  ");
       buf.append(_print_format, val);
     }
   }
   if (G1Log::finest()) {
     buf.append_and_print_cr("");
   }
   double avg = (double)sum / (double)_length;
   buf.append(" Min: ");
   buf.append(_print_format, min);
   buf.append(", Avg: ");
   buf.append("%.1lf", avg); // Always print average as a double
   buf.append(", Max: ");
   buf.append(_print_format, max);
   buf.append(", Diff: ");
   buf.append(_print_format, max - min);
   if (_print_sum) {
     // for things like the start and end times the sum is not
     // that relevant
     buf.append(", Sum: ");
     buf.append(_print_format, sum);
   }
   buf.append_and_print_cr("]");
 }
 #ifndef PRODUCT
 template <class T>
 void WorkerDataArray<T>::reset() {
   for (uint i = 0; i < _length; i++) {
     _data[i] = (T)-1;
   }
 }
 template <class T>
 void WorkerDataArray<T>::verify() {
   for (uint i = 0; i < _length; i++) {
     assert(_data[i] >= (T)0, err_msg("Invalid data for worker %d", i));
   }
 }
 #endif
 G1GCPhaseTimes::G1GCPhaseTimes(uint max_gc_threads) :
   _max_gc_threads(max_gc_threads),
   _min_clear_cc_time_ms(-1.0),
   _max_clear_cc_time_ms(-1.0),
   _cur_clear_cc_time_ms(0.0),
   _cum_clear_cc_time_ms(0.0),
   _num_cc_clears(0L),
   _last_gc_worker_start_times_ms(_max_gc_threads, "%.1lf", false),
   _last_ext_root_scan_times_ms(_max_gc_threads, "%.1lf"),
   _last_satb_filtering_times_ms(_max_gc_threads, "%.1lf"),
   _last_update_rs_times_ms(_max_gc_threads, "%.1lf"),
   _last_update_rs_processed_buffers(_max_gc_threads, "%d"),
   _last_scan_rs_times_ms(_max_gc_threads, "%.1lf"),
   _last_obj_copy_times_ms(_max_gc_threads, "%.1lf"),
   _last_termination_times_ms(_max_gc_threads, "%.1lf"),
   _last_termination_attempts(_max_gc_threads, SIZE_FORMAT),
   _last_gc_worker_end_times_ms(_max_gc_threads, "%.1lf", false),
   _last_gc_worker_times_ms(_max_gc_threads, "%.1lf"),
   _last_gc_worker_other_times_ms(_max_gc_threads, "%.1lf")
 {
   assert(max_gc_threads > 0, "Must have some GC threads");
 }
 void G1GCPhaseTimes::note_gc_start(uint active_gc_threads) {
   assert(active_gc_threads > 0, "The number of threads must be > 0");
   assert(active_gc_threads <= _max_gc_threads, "The number of active threads must be <= the max nubmer of threads");
   _active_gc_threads = active_gc_threads;
   _last_gc_worker_start_times_ms.reset();
   _last_ext_root_scan_times_ms.reset();
   _last_satb_filtering_times_ms.reset();
   _last_update_rs_times_ms.reset();
   _last_update_rs_processed_buffers.reset();
   _last_scan_rs_times_ms.reset();
   _last_obj_copy_times_ms.reset();
   _last_termination_times_ms.reset();
   _last_termination_attempts.reset();
   _last_gc_worker_end_times_ms.reset();
   _last_gc_worker_times_ms.reset();
   _last_gc_worker_other_times_ms.reset();
 }
 void G1GCPhaseTimes::note_gc_end() {
   _last_gc_worker_start_times_ms.verify();
   _last_ext_root_scan_times_ms.verify();
   _last_satb_filtering_times_ms.verify();
   _last_update_rs_times_ms.verify();
   _last_update_rs_processed_buffers.verify();
   _last_scan_rs_times_ms.verify();
   _last_obj_copy_times_ms.verify();
   _last_termination_times_ms.verify();
   _last_termination_attempts.verify();
   _last_gc_worker_end_times_ms.verify();
     for (uint i = 0; i < _active_gc_threads; i++) {
       double worker_time = _last_gc_worker_end_times_ms.get(i) - _last_gc_worker_start_times_ms.get(i);
       _last_gc_worker_times_ms.set(i, worker_time);
       double worker_known_time = _last_ext_root_scan_times_ms.get(i) +
         _last_satb_filtering_times_ms.get(i) +
         _last_update_rs_times_ms.get(i) +
         _last_scan_rs_times_ms.get(i) +
         _last_obj_copy_times_ms.get(i) +
         _last_termination_times_ms.get(i);
       double worker_other_time = worker_time - worker_known_time;
       _last_gc_worker_other_times_ms.set(i, worker_other_time);
     }
   _last_gc_worker_times_ms.verify();
   _last_gc_worker_other_times_ms.verify();
 }
 void G1GCPhaseTimes::print_stats(int level, const char* str, double value) {
   LineBuffer(level).append_and_print_cr("[%s: %.1lf ms]", str, value);
 }
 void G1GCPhaseTimes::print_stats(int level, const char* str, double value, int workers) {
   LineBuffer(level).append_and_print_cr("[%s: %.1lf ms, GC Workers: %d]", str, value, workers);
 }
 double G1GCPhaseTimes::accounted_time_ms() {
     // Subtract the root region scanning wait time. It's initialized to
     // zero at the start of the pause.
     double misc_time_ms = _root_region_scan_wait_time_ms;
     misc_time_ms += _cur_collection_par_time_ms;
     // Now subtract the time taken to fix up roots in generated code
     misc_time_ms += _cur_collection_code_root_fixup_time_ms;
     // Subtract the time taken to clean the card table from the
     // current value of "other time"
     misc_time_ms += _cur_clear_ct_time_ms;
     return misc_time_ms;
 }
 void G1GCPhaseTimes::print(double pause_time_sec) {
   if (_root_region_scan_wait_time_ms > 0.0) {
     print_stats(1, "Root Region Scan Waiting", _root_region_scan_wait_time_ms);
   }
   if (G1CollectedHeap::use_parallel_gc_threads()) {
     print_stats(1, "Parallel Time", _cur_collection_par_time_ms, _active_gc_threads);
     _last_gc_worker_start_times_ms.print(2, "GC Worker Start (ms)");
     _last_ext_root_scan_times_ms.print(2, "Ext Root Scanning (ms)");
     if (_last_satb_filtering_times_ms.sum() > 0.0) {
       _last_satb_filtering_times_ms.print(2, "SATB Filtering (ms)");
     }
     _last_update_rs_times_ms.print(2, "Update RS (ms)");
       _last_update_rs_processed_buffers.print(3, "Processed Buffers");
     _last_scan_rs_times_ms.print(2, "Scan RS (ms)");
     _last_obj_copy_times_ms.print(2, "Object Copy (ms)");
     _last_termination_times_ms.print(2, "Termination (ms)");
     if (G1Log::finest()) {
       _last_termination_attempts.print(3, "Termination Attempts");
     }
     _last_gc_worker_other_times_ms.print(2, "GC Worker Other (ms)");
     _last_gc_worker_times_ms.print(2, "GC Worker Total (ms)");
     _last_gc_worker_end_times_ms.print(2, "GC Worker End (ms)");
   } else {
     _last_ext_root_scan_times_ms.print(1, "Ext Root Scanning (ms)");
     if (_last_satb_filtering_times_ms.sum() > 0.0) {
       _last_satb_filtering_times_ms.print(1, "SATB Filtering (ms)");
     }
     _last_update_rs_times_ms.print(1, "Update RS (ms)");
       _last_update_rs_processed_buffers.print(2, "Processed Buffers");
     _last_scan_rs_times_ms.print(1, "Scan RS (ms)");
     _last_obj_copy_times_ms.print(1, "Object Copy (ms)");
   }
   print_stats(1, "Code Root Fixup", _cur_collection_code_root_fixup_time_ms);
   print_stats(1, "Clear CT", _cur_clear_ct_time_ms);
   if (Verbose && G1Log::finest()) {
     print_stats(1, "Cur Clear CC", _cur_clear_cc_time_ms);
     print_stats(1, "Cum Clear CC", _cum_clear_cc_time_ms);
     print_stats(1, "Min Clear CC", _min_clear_cc_time_ms);
     print_stats(1, "Max Clear CC", _max_clear_cc_time_ms);
     if (_num_cc_clears > 0) {
       print_stats(1, "Avg Clear CC", _cum_clear_cc_time_ms / ((double)_num_cc_clears));
     }
   }
   double misc_time_ms = pause_time_sec * MILLIUNITS - accounted_time_ms();
   print_stats(1, "Other", misc_time_ms);
   if (_cur_verify_before_time_ms > 0.0) {
     print_stats(2, "Verify Before", _cur_verify_before_time_ms);
   }
   print_stats(2, "Choose CSet",
     (_recorded_young_cset_choice_time_ms +
     _recorded_non_young_cset_choice_time_ms));
   print_stats(2, "Ref Proc", _cur_ref_proc_time_ms);
   print_stats(2, "Ref Enq", _cur_ref_enq_time_ms);
   print_stats(2, "Free CSet",
     (_recorded_young_free_cset_time_ms +
     _recorded_non_young_free_cset_time_ms));
   if (_cur_verify_after_time_ms > 0.0) {
     print_stats(2, "Verify After", _cur_verify_after_time_ms);
   }
 }
 void G1GCPhaseTimes::record_cc_clear_time_ms(double ms) {
   if (!(Verbose && G1Log::finest())) {
     return;
   }
   if (_min_clear_cc_time_ms < 0.0 || ms <= _min_clear_cc_time_ms) {
     _min_clear_cc_time_ms = ms;
   }
   if (_max_clear_cc_time_ms < 0.0 || ms >= _max_clear_cc_time_ms) {
     _max_clear_cc_time_ms = ms;
   }
   _cur_clear_cc_time_ms = ms;
   _cum_clear_cc_time_ms += ms;
   _num_cc_clears++;
 }

Mercurial > jdk8-mips64-public > hotspot / annotate

src/share/vm/gc_implementation/g1/g1GCPhaseTimes.cpp@8a5ea0a9ccc4 (annotated)

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