Introduce a way to grab heap stats.

src/heap-profiler.cc

 // Copyright 2009-2010 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 15 matching lines @@
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #include "v8.h"
 
 #include "heap-profiler.h"
 #include "profile-generator.h"
 
 namespace v8 {
 namespace internal {
 
-
 HeapProfiler::HeapProfiler()
     : snapshots_(new HeapSnapshotsCollection()),
       next_snapshot_uid_(1) {
 }
 
 
 HeapProfiler::~HeapProfiler() {
   delete snapshots_;
 }
 
@@ skipping 32 matching lines @@
 HeapSnapshot* HeapProfiler::TakeSnapshot(String* name,
                                          int type,
                                          v8::ActivityControl* control) {
   ASSERT(Isolate::Current()->heap_profiler() != NULL);
   return Isolate::Current()->heap_profiler()->TakeSnapshotImpl(name,
                                                                type,
                                                                control);
 }
 
 
+void HeapProfiler::StartHeapObjectsTracking() {
+  ASSERT(Isolate::Current()->heap_profiler() != NULL);
+  Isolate::Current()->heap_profiler()->StartHeapObjectsTrackingImpl();
+}
+
+
+void HeapProfiler::StopHeapObjectsTracking() {
+  ASSERT(Isolate::Current()->heap_profiler() != NULL);
+  Isolate::Current()->heap_profiler()->StopHeapObjectsTrackingImpl();
+}
+
+
+void HeapProfiler::PushHeapObjectsStats(v8::OutputStream* stream) {
+  ASSERT(Isolate::Current()->heap_profiler() != NULL);
+  return Isolate::Current()->heap_profiler()->PushHeapObjectsStatsImpl(stream);
+}
+
+
 void HeapProfiler::DefineWrapperClass(
     uint16_t class_id, v8::HeapProfiler::WrapperInfoCallback callback) {
   ASSERT(class_id != v8::HeapProfiler::kPersistentHandleNoClassId);
   if (wrapper_callbacks_.length() <= class_id) {
     wrapper_callbacks_.AddBlock(
         NULL, class_id - wrapper_callbacks_.length() + 1);
   }
   wrapper_callbacks_[class_id] = callback;
 }
 
@@ skipping 30 matching lines @@
   return result;
 }
 
 
 HeapSnapshot* HeapProfiler::TakeSnapshotImpl(String* name,
                                              int type,
                                              v8::ActivityControl* control) {
   return TakeSnapshotImpl(snapshots_->names()->GetName(name), type, control);
 }
 
+void HeapProfiler::StartHeapObjectsTrackingImpl() {
+  snapshots_->StartHeapObjectsTracking();
+}
+
+
+void HeapProfiler::PushHeapObjectsStatsImpl(OutputStream* stream) {
+  snapshots_->PushHeapObjectsStats(stream);
+}
+
+
+void HeapProfiler::StopHeapObjectsTrackingImpl() {
+  snapshots_->StopHeapObjectsTracking();
+}
+
 
 int HeapProfiler::GetSnapshotsCount() {
   HeapProfiler* profiler = Isolate::Current()->heap_profiler();
   ASSERT(profiler != NULL);
   return profiler->snapshots_->snapshots()->length();
 }
 
 
 HeapSnapshot* HeapProfiler::GetSnapshot(int index) {
   HeapProfiler* profiler = Isolate::Current()->heap_profiler();
@@ skipping 15 matching lines @@
   profiler->ResetSnapshots();
 }
 
 
 void HeapProfiler::ObjectMoveEvent(Address from, Address to) {
   snapshots_->ObjectMoveEvent(from, to);
 }
 
 
 } }  // namespace v8::internal