1 /*
   2  * Copyright (c) 2014, 2015, 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_G1_G1STRINGDEDUPSTAT_HPP
  26 #define SHARE_VM_GC_G1_G1STRINGDEDUPSTAT_HPP
  27 
  28 #include "memory/allocation.hpp"
  29 #include "runtime/os.hpp"
  30 
  31 // Macros for GC log output formating
  32 #define G1_STRDEDUP_OBJECTS_FORMAT         UINTX_FORMAT_W(12)
  33 #define G1_STRDEDUP_TIME_FORMAT            "%1.7lf secs"
  34 #define G1_STRDEDUP_PERCENT_FORMAT         "%5.1lf%%"
  35 #define G1_STRDEDUP_PERCENT_FORMAT_NS      "%.1lf%%"
  36 #define G1_STRDEDUP_BYTES_FORMAT           "%8.1lf%s"
  37 #define G1_STRDEDUP_BYTES_FORMAT_NS        "%.1lf%s"
  38 #define G1_STRDEDUP_BYTES_PARAM(bytes)     byte_size_in_proper_unit((double)(bytes)), proper_unit_for_byte_size((bytes))
  39 
  40 //
  41 // Statistics gathered by the deduplication thread.
  42 //
  43 class G1StringDedupStat : public StackObj {
  44 private:
  45   // Counters
  46   uintx  _inspected;
  47   uintx  _skipped;
  48   uintx  _hashed;
  49   uintx  _known;
  50   uintx  _new;
  51   uintx  _new_bytes;
  52   uintx  _deduped;
  53   uintx  _deduped_bytes;
  54   uintx  _deduped_young;
  55   uintx  _deduped_young_bytes;
  56   uintx  _deduped_old;
  57   uintx  _deduped_old_bytes;
  58   uintx  _idle;
  59   uintx  _exec;
  60   uintx  _block;
  61 
  62   // Time spent by the deduplication thread in different phases
  63   double _start;
  64   double _idle_elapsed;
  65   double _exec_elapsed;
  66   double _block_elapsed;
  67 
  68 public:
  69   G1StringDedupStat();
  70 
  71   void inc_inspected() {
  72     _inspected++;
  73   }
  74 
  75   void inc_skipped() {
  76     _skipped++;
  77   }
  78 
  79   void inc_hashed() {
  80     _hashed++;
  81   }
  82 
  83   void inc_known() {
  84     _known++;
  85   }
  86 
  87   void inc_new(uintx bytes) {
  88     _new++;
  89     _new_bytes += bytes;
  90   }
  91 
  92   void inc_deduped_young(uintx bytes) {
  93     _deduped++;
  94     _deduped_bytes += bytes;
  95     _deduped_young++;
  96     _deduped_young_bytes += bytes;
  97   }
  98 
  99   void inc_deduped_old(uintx bytes) {
 100     _deduped++;
 101     _deduped_bytes += bytes;
 102     _deduped_old++;
 103     _deduped_old_bytes += bytes;
 104   }
 105 
 106   void mark_idle() {
 107     _start = os::elapsedTime();
 108     _idle++;
 109   }
 110 
 111   void mark_exec() {
 112     double now = os::elapsedTime();
 113     _idle_elapsed = now - _start;
 114     _start = now;
 115     _exec++;
 116   }
 117 
 118   void mark_block() {
 119     double now = os::elapsedTime();
 120     _exec_elapsed += now - _start;
 121     _start = now;
 122     _block++;
 123   }
 124 
 125   void mark_unblock() {
 126     double now = os::elapsedTime();
 127     _block_elapsed += now - _start;
 128     _start = now;
 129   }
 130 
 131   void mark_done() {
 132     double now = os::elapsedTime();
 133     _exec_elapsed += now - _start;
 134   }
 135 
 136   void add(const G1StringDedupStat& stat);
 137 
 138   static void print_summary(const G1StringDedupStat& last_stat, const G1StringDedupStat& total_stat);
 139   static void print_statistics(const G1StringDedupStat& stat, bool total);
 140 };
 141 
 142 #endif // SHARE_VM_GC_G1_G1STRINGDEDUPSTAT_HPP