V8 Project
statistics-extension.cc
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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() && args[0]->ToBoolean()->Value()) {
57  heap->CollectAllGarbage(Heap::kNoGCFlags, "counters extension");
58  }
59  }
60 
61  Counters* counters = isolate->counters();
62  v8::Local<v8::Object> result = v8::Object::New(args.GetIsolate());
63 
64 #define ADD_COUNTER(name, caption) \
65  AddCounter(args.GetIsolate(), result, counters->name(), #name);
66 
67  STATS_COUNTER_LIST_1(ADD_COUNTER)
68  STATS_COUNTER_LIST_2(ADD_COUNTER)
69 #undef ADD_COUNTER
70 #define ADD_COUNTER(name) \
71  AddCounter(args.GetIsolate(), result, counters->count_of_##name(), \
72  "count_of_" #name); \
73  AddCounter(args.GetIsolate(), result, counters->size_of_##name(), \
74  "size_of_" #name);
75 
76  INSTANCE_TYPE_LIST(ADD_COUNTER)
77 #undef ADD_COUNTER
78 #define ADD_COUNTER(name) \
79  AddCounter(args.GetIsolate(), result, counters->count_of_CODE_TYPE_##name(), \
80  "count_of_CODE_TYPE_" #name); \
81  AddCounter(args.GetIsolate(), result, counters->size_of_CODE_TYPE_##name(), \
82  "size_of_CODE_TYPE_" #name);
83 
84  CODE_KIND_LIST(ADD_COUNTER)
85 #undef ADD_COUNTER
86 #define ADD_COUNTER(name) \
87  AddCounter(args.GetIsolate(), result, \
88  counters->count_of_FIXED_ARRAY_##name(), \
89  "count_of_FIXED_ARRAY_" #name); \
90  AddCounter(args.GetIsolate(), result, \
91  counters->size_of_FIXED_ARRAY_##name(), \
92  "size_of_FIXED_ARRAY_" #name);
93 
94  FIXED_ARRAY_SUB_INSTANCE_TYPE_LIST(ADD_COUNTER)
95 #undef ADD_COUNTER
96 
97  AddNumber(args.GetIsolate(), result, isolate->memory_allocator()->Size(),
98  "total_committed_bytes");
99  AddNumber(args.GetIsolate(), result, heap->new_space()->Size(),
100  "new_space_live_bytes");
101  AddNumber(args.GetIsolate(), result, heap->new_space()->Available(),
102  "new_space_available_bytes");
103  AddNumber(args.GetIsolate(), result, heap->new_space()->CommittedMemory(),
104  "new_space_commited_bytes");
105  AddNumber(args.GetIsolate(), result, heap->old_pointer_space()->Size(),
106  "old_pointer_space_live_bytes");
107  AddNumber(args.GetIsolate(), result, heap->old_pointer_space()->Available(),
108  "old_pointer_space_available_bytes");
109  AddNumber(args.GetIsolate(), result,
110  heap->old_pointer_space()->CommittedMemory(),
111  "old_pointer_space_commited_bytes");
112  AddNumber(args.GetIsolate(), result, heap->old_data_space()->Size(),
113  "old_data_space_live_bytes");
114  AddNumber(args.GetIsolate(), result, heap->old_data_space()->Available(),
115  "old_data_space_available_bytes");
116  AddNumber(args.GetIsolate(), result,
117  heap->old_data_space()->CommittedMemory(),
118  "old_data_space_commited_bytes");
119  AddNumber(args.GetIsolate(), result, heap->code_space()->Size(),
120  "code_space_live_bytes");
121  AddNumber(args.GetIsolate(), result, heap->code_space()->Available(),
122  "code_space_available_bytes");
123  AddNumber(args.GetIsolate(), result, heap->code_space()->CommittedMemory(),
124  "code_space_commited_bytes");
125  AddNumber(args.GetIsolate(), result, heap->cell_space()->Size(),
126  "cell_space_live_bytes");
127  AddNumber(args.GetIsolate(), result, heap->cell_space()->Available(),
128  "cell_space_available_bytes");
129  AddNumber(args.GetIsolate(), result, heap->cell_space()->CommittedMemory(),
130  "cell_space_commited_bytes");
131  AddNumber(args.GetIsolate(), result, heap->property_cell_space()->Size(),
132  "property_cell_space_live_bytes");
133  AddNumber(args.GetIsolate(), result, heap->property_cell_space()->Available(),
134  "property_cell_space_available_bytes");
135  AddNumber(args.GetIsolate(), result,
136  heap->property_cell_space()->CommittedMemory(),
137  "property_cell_space_commited_bytes");
138  AddNumber(args.GetIsolate(), result, heap->lo_space()->Size(),
139  "lo_space_live_bytes");
140  AddNumber(args.GetIsolate(), result, heap->lo_space()->Available(),
141  "lo_space_available_bytes");
142  AddNumber(args.GetIsolate(), result, heap->lo_space()->CommittedMemory(),
143  "lo_space_commited_bytes");
144  AddNumber64(args.GetIsolate(), result,
145  heap->amount_of_external_allocated_memory(),
146  "amount_of_external_allocated_memory");
147  args.GetReturnValue().Set(result);
148 }
149 
150 } } // namespace v8::internal
v8::FunctionCallbackInfo
The argument information given to function call callbacks.
Definition: v8.h:2650
v8::FunctionCallbackInfo::GetReturnValue
ReturnValue< T > GetReturnValue() const
Definition: v8.h:6348
v8::FunctionCallbackInfo::GetIsolate
Isolate * GetIsolate() const
Definition: v8.h:6342
v8::FunctionCallbackInfo::Length
int Length() const
Definition: v8.h:6360
v8::FunctionTemplate::New
static Local< FunctionTemplate > New(Isolate *isolate, FunctionCallback callback=0, Handle< Value > data=Handle< Value >(), Handle< Signature > signature=Handle< Signature >(), int length=0)
Creates a function template.
Definition: api.cc:904
v8::Handle
An object reference managed by the v8 garbage collector.
Definition: v8.h:198
v8::Isolate
Isolate represents an isolated instance of the V8 engine.
Definition: v8.h:4356
v8::Local
A light-weight stack-allocated object handle.
Definition: v8.h:334
v8::Number::New
static Local< Number > New(Isolate *isolate, double value)
Definition: api.cc:6268
v8::Object::New
static Local< Object > New(Isolate *isolate)
Definition: api.cc:5610
v8::String::Utf8Value
Converts an object to a UTF-8-encoded character array.
Definition: v8.h:2048
v8::String::NewFromUtf8
static Local< String > NewFromUtf8(Isolate *isolate, const char *data, NewStringType type=kNormalString, int length=-1)
Allocates a new string from UTF-8 data.
Definition: api.cc:5447
v8::internal::Heap::old_pointer_space
OldSpace * old_pointer_space()
Definition: heap.h:594
v8::internal::Heap::property_cell_space
PropertyCellSpace * property_cell_space()
Definition: heap.h:599
v8::internal::Heap::amount_of_external_allocated_memory
int64_t amount_of_external_allocated_memory()
Definition: heap.h:1276
v8::internal::Heap::code_space
OldSpace * code_space()
Definition: heap.h:596
v8::internal::Heap::lo_space
LargeObjectSpace * lo_space()
Definition: heap.h:600
v8::internal::Heap::cell_space
CellSpace * cell_space()
Definition: heap.h:598
v8::internal::Heap::kNoGCFlags
static const int kNoGCFlags
Definition: heap.h:716
v8::internal::Heap::old_data_space
OldSpace * old_data_space()
Definition: heap.h:595
v8::internal::Heap::new_space
NewSpace * new_space()
Definition: heap.h:593
v8::internal::Heap::CollectAllGarbage
void CollectAllGarbage(int flags, const char *gc_reason=NULL, const GCCallbackFlags gc_callback_flags=kNoGCCallbackFlags)
Definition: heap.cc:724
v8::internal::Isolate::memory_allocator
MemoryAllocator * memory_allocator()
Definition: isolate.h:883
v8::internal::Isolate::counters
Counters * counters()
Definition: isolate.h:857
v8::internal::LargeObjectSpace::Size
virtual intptr_t Size()
Definition: spaces.h:2740
v8::internal::NewSpace::Available
intptr_t Available()
Definition: spaces.h:2400
v8::internal::NewSpace::CommittedMemory
intptr_t CommittedMemory()
Definition: spaces.h:2385
v8::internal::NewSpace::Size
virtual intptr_t Size()
Definition: spaces.h:2360
v8::internal::PagedSpace::CommittedMemory
intptr_t CommittedMemory()
Definition: spaces.h:1692
v8::internal::PagedSpace::Available
intptr_t Available()
Definition: spaces.h:1733
v8::internal::PagedSpace::Size
virtual intptr_t Size()
Definition: spaces.h:1739
v8::internal::StatisticsExtension::GetNativeFunctionTemplate
virtual v8::Handle< v8::FunctionTemplate > GetNativeFunctionTemplate(v8::Isolate *isolate, v8::Handle< v8::String > name)
Definition: statistics-extension.cc:14
v8::internal::StatisticsExtension::GetCounters
static void GetCounters(const v8::FunctionCallbackInfo< v8::Value > &args)
Definition: statistics-extension.cc:50
STATS_COUNTER_LIST_1
#define STATS_COUNTER_LIST_1(SC)
Definition: counters.h:380
STATS_COUNTER_LIST_2
#define STATS_COUNTER_LIST_2(SC)
Definition: counters.h:433
name
enable harmony numeric enable harmony object literal extensions Optimize object Array DOM strings and string trace pretenuring decisions of HAllocate instructions Enables optimizations which favor memory size over execution speed maximum source size in bytes considered for a single inlining maximum cumulative number of AST nodes considered for inlining trace the tracking of allocation sites deoptimize every n garbage collections perform array bounds checks elimination analyze liveness of environment slots and zap dead values flushes the cache of optimized code for closures on every GC allow uint32 values on optimize frames if they are used only in safe operations track concurrent recompilation artificial compilation delay in ms do not emit check maps for constant values that have a leaf deoptimize the optimized code if the layout of the maps changes enable context specialization in TurboFan execution budget before interrupt is triggered max percentage of megamorphic generic ICs to allow optimization enable use of SAHF instruction if enable use of VFP3 instructions if available enable use of NEON instructions if enable use of SDIV and UDIV instructions if enable use of MLS instructions if enable loading bit constant by means of movw movt instruction enable unaligned accesses for enable use of d16 d31 registers on ARM this requires VFP3 force all emitted branches to be in long enable alignment of csp to bytes on platforms which prefer the register to always be expose gc extension under the specified name show built in functions in stack traces use random jit cookie to mask large constants minimum length for automatic enable preparsing CPU profiler sampling interval in microseconds trace out of bounds accesses to external arrays default size of stack region v8 is allowed to maximum length of function source code printed in a stack trace min size of a semi the new space consists of two semi spaces print one trace line following each garbage collection do not print trace line after scavenger collection print cumulative GC statistics in name
Definition: flag-definitions.h:504
DCHECK
#define DCHECK(condition)
Definition: logging.h:205
v8::internal::AddCounter
static void AddCounter(v8::Isolate *isolate, v8::Local< v8::Object > object, StatsCounter *counter, const char *name)
Definition: statistics-extension.cc:22
v8::internal::AddNumber64
static void AddNumber64(v8::Isolate *isolate, v8::Local< v8::Object > object, int64_t value, const char *name)
Definition: statistics-extension.cc:41
v8::internal::AddNumber
static void AddNumber(v8::Isolate *isolate, v8::Local< v8::Object > object, intptr_t value, const char *name)
Definition: statistics-extension.cc:32
v8
Debugger support for the V8 JavaScript engine.
Definition: accessors.cc:20
INSTANCE_TYPE_LIST
#define INSTANCE_TYPE_LIST(V)
Definition: objects.h:339
CODE_KIND_LIST
#define CODE_KIND_LIST(V)
Definition: objects.h:4950
FIXED_ARRAY_SUB_INSTANCE_TYPE_LIST
#define FIXED_ARRAY_SUB_INSTANCE_TYPE_LIST(V)
Definition: objects.h:800
ADD_COUNTER
#define ADD_COUNTER(name, caption)