deps/v8/src/extensions/statistics-extension.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/extensions/statistics-extension.h"
   6
   7 namespace v8 {
   8 namespace internal {
   9
  10 const char* const StatisticsExtension::kSource =
  11     "native function getV8Statistics();";
  12
  13
  14 v8::Handle<v8::FunctionTemplate> StatisticsExtension::GetNativeFunctionTemplate(
  15     v8::Isolate* isolate,
  16     v8::Handle<v8::String> str) {
  17   DCHECK(strcmp(*v8::String::Utf8Value(str), "getV8Statistics") == 0);
  18   return v8::FunctionTemplate::New(isolate, StatisticsExtension::GetCounters);
  19 }
  20
  21
  22 static void AddCounter(v8::Isolate* isolate,
  23                        v8::Local<v8::Object> object,
  24                        StatsCounter* counter,
  25                        const char* name) {
  26   if (counter->Enabled()) {
  27     object->Set(v8::String::NewFromUtf8(isolate, name),
  28                 v8::Number::New(isolate, *counter->GetInternalPointer()));
  29   }
  30 }
  31
  32 static void AddNumber(v8::Isolate* isolate,
  33                       v8::Local<v8::Object> object,
  34                       intptr_t value,
  35                       const char* name) {
  36   object->Set(v8::String::NewFromUtf8(isolate, name),
  37               v8::Number::New(isolate, static_cast<double>(value)));
  38 }
  39
  40
  41 static void AddNumber64(v8::Isolate* isolate,
  42                         v8::Local<v8::Object> object,
  43                         int64_t value,
  44                         const char* name) {
  45   object->Set(v8::String::NewFromUtf8(isolate, name),
  46               v8::Number::New(isolate, static_cast<double>(value)));
  47 }
  48
  49
  50 void StatisticsExtension::GetCounters(
  51     const v8::FunctionCallbackInfo<v8::Value>& args) {
  52   Isolate* isolate = reinterpret_cast<Isolate*>(args.GetIsolate());
  53   Heap* heap = isolate->heap();
  54
  55   if (args.Length() > 0) {  // GC if first argument evaluates to true.
  56     if (args[0]->IsBoolean() &&
  57         args[0]->ToBoolean(args.GetIsolate())->Value()) {
  58       heap->CollectAllGarbage(Heap::kNoGCFlags, "counters extension");
  59     }
  60   }
  61
  62   Counters* counters = isolate->counters();
  63   v8::Local<v8::Object> result = v8::Object::New(args.GetIsolate());
  64
  65   struct StatisticsCounter {
  66     v8::internal::StatsCounter* counter;
  67     const char* name;
  68   };
  69   const StatisticsCounter counter_list[] = {
  70 #define ADD_COUNTER(name, caption) \
  71   { counters->name(), #name }      \
  72   ,
  73
  74       STATS_COUNTER_LIST_1(ADD_COUNTER) STATS_COUNTER_LIST_2(ADD_COUNTER)
  75 #undef ADD_COUNTER
  76 #define ADD_COUNTER(name)                            \
  77   { counters->count_of_##name(), "count_of_" #name } \
  78   , {counters->size_of_##name(), "size_of_" #name},
  79
  80           INSTANCE_TYPE_LIST(ADD_COUNTER)
  81 #undef ADD_COUNTER
  82 #define ADD_COUNTER(name)                                                \
  83   { counters->count_of_CODE_TYPE_##name(), "count_of_CODE_TYPE_" #name } \
  84   , {counters->size_of_CODE_TYPE_##name(), "size_of_CODE_TYPE_" #name},
  85
  86               CODE_KIND_LIST(ADD_COUNTER)
  87 #undef ADD_COUNTER
  88 #define ADD_COUNTER(name)                                                    \
  89   { counters->count_of_FIXED_ARRAY_##name(), "count_of_FIXED_ARRAY_" #name } \
  90   , {counters->size_of_FIXED_ARRAY_##name(), "size_of_FIXED_ARRAY_" #name},
  91
  92                   FIXED_ARRAY_SUB_INSTANCE_TYPE_LIST(ADD_COUNTER)
  93 #undef ADD_COUNTER
  94   };  // End counter_list array.
  95
  96   for (size_t i = 0; i < arraysize(counter_list); i++) {
  97     AddCounter(args.GetIsolate(), result, counter_list[i].counter,
  98                counter_list[i].name);
  99   }
 100
 101   struct StatisticNumber {
 102     intptr_t number;
 103     const char* name;
 104   };
 105
 106   const StatisticNumber numbers[] = {
 107       {isolate->memory_allocator()->Size(), "total_committed_bytes"},
 108       {heap->new_space()->Size(), "new_space_live_bytes"},
 109       {heap->new_space()->Available(), "new_space_available_bytes"},
 110       {heap->new_space()->CommittedMemory(), "new_space_commited_bytes"},
 111       {heap->old_pointer_space()->Size(), "old_pointer_space_live_bytes"},
 112       {heap->old_pointer_space()->Available(),
 113        "old_pointer_space_available_bytes"},
 114       {heap->old_pointer_space()->CommittedMemory(),
 115        "old_pointer_space_commited_bytes"},
 116       {heap->old_data_space()->Size(), "old_data_space_live_bytes"},
 117       {heap->old_data_space()->Available(), "old_data_space_available_bytes"},
 118       {heap->old_data_space()->CommittedMemory(),
 119        "old_data_space_commited_bytes"},
 120       {heap->code_space()->Size(), "code_space_live_bytes"},
 121       {heap->code_space()->Available(), "code_space_available_bytes"},
 122       {heap->code_space()->CommittedMemory(), "code_space_commited_bytes"},
 123       {heap->cell_space()->Size(), "cell_space_live_bytes"},
 124       {heap->cell_space()->Available(), "cell_space_available_bytes"},
 125       {heap->cell_space()->CommittedMemory(), "cell_space_commited_bytes"},
 126       {heap->lo_space()->Size(), "lo_space_live_bytes"},
 127       {heap->lo_space()->Available(), "lo_space_available_bytes"},
 128       {heap->lo_space()->CommittedMemory(), "lo_space_commited_bytes"},
 129   };
 130
 131   for (size_t i = 0; i < arraysize(numbers); i++) {
 132     AddNumber(args.GetIsolate(), result, numbers[i].number, numbers[i].name);
 133   }
 134
 135   AddNumber64(args.GetIsolate(), result,
 136               heap->amount_of_external_allocated_memory(),
 137               "amount_of_external_allocated_memory");
 138   args.GetReturnValue().Set(result);
 139 }
 140
 141 } }  // namespace v8::internal