src/3rdparty/v8/src/heap-profiler.cc

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  27
  28 #include "v8.h"
  29
  30 #include "heap-profiler.h"
  31 #include "profile-generator.h"
  32
  33 namespace v8 {
  34 namespace internal {
  35
  36 HeapProfiler::HeapProfiler()
  37     : snapshots_(new HeapSnapshotsCollection()),
  38       next_snapshot_uid_(1) {
  39 }
  40
  41
  42 HeapProfiler::~HeapProfiler() {
  43   delete snapshots_;
  44 }
  45
  46
  47 void HeapProfiler::ResetSnapshots() {
  48   delete snapshots_;
  49   snapshots_ = new HeapSnapshotsCollection();
  50 }
  51
  52
  53 void HeapProfiler::SetUp() {
  54   Isolate* isolate = Isolate::Current();
  55   if (isolate->heap_profiler() == NULL) {
  56     isolate->set_heap_profiler(new HeapProfiler());
  57   }
  58 }
  59
  60
  61 void HeapProfiler::TearDown() {
  62   Isolate* isolate = Isolate::Current();
  63   delete isolate->heap_profiler();
  64   isolate->set_heap_profiler(NULL);
  65 }
  66
  67
  68 HeapSnapshot* HeapProfiler::TakeSnapshot(const char* name,
  69                                          int type,
  70                                          v8::ActivityControl* control) {
  71   ASSERT(Isolate::Current()->heap_profiler() != NULL);
  72   return Isolate::Current()->heap_profiler()->TakeSnapshotImpl(name,
  73                                                                type,
  74                                                                control);
  75 }
  76
  77
  78 HeapSnapshot* HeapProfiler::TakeSnapshot(String* name,
  79                                          int type,
  80                                          v8::ActivityControl* control) {
  81   ASSERT(Isolate::Current()->heap_profiler() != NULL);
  82   return Isolate::Current()->heap_profiler()->TakeSnapshotImpl(name,
  83                                                                type,
  84                                                                control);
  85 }
  86
  87
  88 void HeapProfiler::StartHeapObjectsTracking() {
  89   ASSERT(Isolate::Current()->heap_profiler() != NULL);
  90   Isolate::Current()->heap_profiler()->StartHeapObjectsTrackingImpl();
  91 }
  92
  93
  94 void HeapProfiler::StopHeapObjectsTracking() {
  95   ASSERT(Isolate::Current()->heap_profiler() != NULL);
  96   Isolate::Current()->heap_profiler()->StopHeapObjectsTrackingImpl();
  97 }
  98
  99
 100 void HeapProfiler::PushHeapObjectsStats(v8::OutputStream* stream) {
 101   ASSERT(Isolate::Current()->heap_profiler() != NULL);
 102   return Isolate::Current()->heap_profiler()->PushHeapObjectsStatsImpl(stream);
 103 }
 104
 105
 106 void HeapProfiler::DefineWrapperClass(
 107     uint16_t class_id, v8::HeapProfiler::WrapperInfoCallback callback) {
 108   ASSERT(class_id != v8::HeapProfiler::kPersistentHandleNoClassId);
 109   if (wrapper_callbacks_.length() <= class_id) {
 110     wrapper_callbacks_.AddBlock(
 111         NULL, class_id - wrapper_callbacks_.length() + 1);
 112   }
 113   wrapper_callbacks_[class_id] = callback;
 114 }
 115
 116
 117 v8::RetainedObjectInfo* HeapProfiler::ExecuteWrapperClassCallback(
 118     uint16_t class_id, Object** wrapper) {
 119   if (wrapper_callbacks_.length() <= class_id) return NULL;
 120   return wrapper_callbacks_[class_id](
 121       class_id, Utils::ToLocal(Handle<Object>(wrapper)));
 122 }
 123
 124
 125 HeapSnapshot* HeapProfiler::TakeSnapshotImpl(const char* name,
 126                                              int type,
 127                                              v8::ActivityControl* control) {
 128   HeapSnapshot::Type s_type = static_cast<HeapSnapshot::Type>(type);
 129   HeapSnapshot* result =
 130       snapshots_->NewSnapshot(s_type, name, next_snapshot_uid_++);
 131   bool generation_completed = true;
 132   switch (s_type) {
 133     case HeapSnapshot::kFull: {
 134       HeapSnapshotGenerator generator(result, control);
 135       generation_completed = generator.GenerateSnapshot();
 136       break;
 137     }
 138     default:
 139       UNREACHABLE();
 140   }
 141   if (!generation_completed) {
 142     delete result;
 143     result = NULL;
 144   }
 145   snapshots_->SnapshotGenerationFinished(result);
 146   return result;
 147 }
 148
 149
 150 HeapSnapshot* HeapProfiler::TakeSnapshotImpl(String* name,
 151                                              int type,
 152                                              v8::ActivityControl* control) {
 153   return TakeSnapshotImpl(snapshots_->names()->GetName(name), type, control);
 154 }
 155
 156 void HeapProfiler::StartHeapObjectsTrackingImpl() {
 157   snapshots_->StartHeapObjectsTracking();
 158 }
 159
 160
 161 void HeapProfiler::PushHeapObjectsStatsImpl(OutputStream* stream) {
 162   snapshots_->PushHeapObjectsStats(stream);
 163 }
 164
 165
 166 void HeapProfiler::StopHeapObjectsTrackingImpl() {
 167   snapshots_->StopHeapObjectsTracking();
 168 }
 169
 170
 171 int HeapProfiler::GetSnapshotsCount() {
 172   HeapProfiler* profiler = Isolate::Current()->heap_profiler();
 173   ASSERT(profiler != NULL);
 174   return profiler->snapshots_->snapshots()->length();
 175 }
 176
 177
 178 HeapSnapshot* HeapProfiler::GetSnapshot(int index) {
 179   HeapProfiler* profiler = Isolate::Current()->heap_profiler();
 180   ASSERT(profiler != NULL);
 181   return profiler->snapshots_->snapshots()->at(index);
 182 }
 183
 184
 185 HeapSnapshot* HeapProfiler::FindSnapshot(unsigned uid) {
 186   HeapProfiler* profiler = Isolate::Current()->heap_profiler();
 187   ASSERT(profiler != NULL);
 188   return profiler->snapshots_->GetSnapshot(uid);
 189 }
 190
 191
 192 SnapshotObjectId HeapProfiler::GetSnapshotObjectId(Handle<Object> obj) {
 193   if (!obj->IsHeapObject())
 194     return v8::HeapProfiler::kUnknownObjectId;
 195   HeapProfiler* profiler = Isolate::Current()->heap_profiler();
 196   ASSERT(profiler != NULL);
 197   return profiler->snapshots_->FindObjectId(HeapObject::cast(*obj)->address());
 198 }
 199
 200
 201 void HeapProfiler::DeleteAllSnapshots() {
 202   HeapProfiler* profiler = Isolate::Current()->heap_profiler();
 203   ASSERT(profiler != NULL);
 204   profiler->ResetSnapshots();
 205 }
 206
 207
 208 void HeapProfiler::ObjectMoveEvent(Address from, Address to) {
 209   snapshots_->ObjectMoveEvent(from, to);
 210 }
 211
 212
 213 } }  // namespace v8::internal