src/v8/src/counters.cc

   1 // Copyright 2012 the V8 project authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "src/v8.h"
   6
   7 #include "src/counters.h"
   8 #include "src/isolate.h"
   9 #include "src/platform.h"
  10
  11 namespace v8 {
  12 namespace internal {
  13
  14 StatsTable::StatsTable()
  15     : lookup_function_(NULL),
  16       create_histogram_function_(NULL),
  17       add_histogram_sample_function_(NULL) {}
  18
  19
  20 int* StatsCounter::FindLocationInStatsTable() const {
  21   return isolate_->stats_table()->FindLocation(name_);
  22 }
  23
  24
  25 void Histogram::AddSample(int sample) {
  26   if (Enabled()) {
  27     isolate()->stats_table()->AddHistogramSample(histogram_, sample);
  28   }
  29 }
  30
  31 void* Histogram::CreateHistogram() const {
  32   return isolate()->stats_table()->
  33       CreateHistogram(name_, min_, max_, num_buckets_);
  34 }
  35
  36
  37 // Start the timer.
  38 void HistogramTimer::Start() {
  39   if (Enabled()) {
  40     timer_.Start();
  41   }
  42   isolate()->event_logger()(name(), Logger::START);
  43 }
  44
  45
  46 // Stop the timer and record the results.
  47 void HistogramTimer::Stop() {
  48   if (Enabled()) {
  49     // Compute the delta between start and stop, in milliseconds.
  50     AddSample(static_cast<int>(timer_.Elapsed().InMilliseconds()));
  51     timer_.Stop();
  52   }
  53   isolate()->event_logger()(name(), Logger::END);
  54 }
  55
  56
  57 Counters::Counters(Isolate* isolate) {
  58 #define HT(name, caption) \
  59     name##_ = HistogramTimer(#caption, 0, 10000, 50, isolate);
  60     HISTOGRAM_TIMER_LIST(HT)
  61 #undef HT
  62
  63 #define HP(name, caption) \
  64     name##_ = Histogram(#caption, 0, 101, 100, isolate);
  65     HISTOGRAM_PERCENTAGE_LIST(HP)
  66 #undef HP
  67
  68 #define HM(name, caption) \
  69     name##_ = Histogram(#caption, 1000, 500000, 50, isolate);
  70     HISTOGRAM_MEMORY_LIST(HM)
  71 #undef HM
  72
  73 #define SC(name, caption) \
  74     name##_ = StatsCounter(isolate, "c:" #caption);
  75
  76     STATS_COUNTER_LIST_1(SC)
  77     STATS_COUNTER_LIST_2(SC)
  78 #undef SC
  79
  80 #define SC(name) \
  81     count_of_##name##_ = StatsCounter(isolate, "c:" "V8.CountOf_" #name); \
  82     size_of_##name##_ = StatsCounter(isolate, "c:" "V8.SizeOf_" #name);
  83     INSTANCE_TYPE_LIST(SC)
  84 #undef SC
  85
  86 #define SC(name) \
  87     count_of_CODE_TYPE_##name##_ = \
  88         StatsCounter(isolate, "c:" "V8.CountOf_CODE_TYPE-" #name); \
  89     size_of_CODE_TYPE_##name##_ = \
  90         StatsCounter(isolate, "c:" "V8.SizeOf_CODE_TYPE-" #name);
  91     CODE_KIND_LIST(SC)
  92 #undef SC
  93
  94 #define SC(name) \
  95     count_of_FIXED_ARRAY_##name##_ = \
  96         StatsCounter(isolate, "c:" "V8.CountOf_FIXED_ARRAY-" #name); \
  97     size_of_FIXED_ARRAY_##name##_ = \
  98         StatsCounter(isolate, "c:" "V8.SizeOf_FIXED_ARRAY-" #name);
  99     FIXED_ARRAY_SUB_INSTANCE_TYPE_LIST(SC)
 100 #undef SC
 101
 102 #define SC(name) \
 103     count_of_CODE_AGE_##name##_ = \
 104         StatsCounter(isolate, "c:" "V8.CountOf_CODE_AGE-" #name); \
 105     size_of_CODE_AGE_##name##_ = \
 106         StatsCounter(isolate, "c:" "V8.SizeOf_CODE_AGE-" #name);
 107     CODE_AGE_LIST_COMPLETE(SC)
 108 #undef SC
 109 }
 110
 111
 112 void Counters::ResetHistograms() {
 113 #define HT(name, caption) name##_.Reset();
 114     HISTOGRAM_TIMER_LIST(HT)
 115 #undef HT
 116
 117 #define HP(name, caption) name##_.Reset();
 118     HISTOGRAM_PERCENTAGE_LIST(HP)
 119 #undef HP
 120
 121 #define HM(name, caption) name##_.Reset();
 122     HISTOGRAM_MEMORY_LIST(HM)
 123 #undef HM
 124 }
 125
 126 } }  // namespace v8::internal