New heap profiler: add support for progress reporting and control.

src/profile-generator-inl.h

 // Copyright 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 104 matching lines @@
     // To avoid confusing people, let's put all these entries into
     // one bucket.
     case OTHER:
     case EXTERNAL:
       return program_entry_;
     default: return NULL;
   }
 }
 
 
-inline uint64_t HeapEntry::id() {
+uint64_t HeapEntry::id() {
   union {
     Id stored_id;
     uint64_t returned_id;
   } id_adaptor = {id_};
   return id_adaptor.returned_id;
 }
 
 
 template<class Visitor>
 void HeapEntriesMap::UpdateEntries(Visitor* visitor) {
   for (HashMap::Entry* p = entries_.Start();
        p != NULL;
        p = entries_.Next(p)) {
     EntryInfo* entry_info = reinterpret_cast<EntryInfo*>(p->value);
     entry_info->entry = visitor->GetEntry(
         reinterpret_cast<HeapObject*>(p->key),
         entry_info->children_count,
         entry_info->retainers_count);
     entry_info->children_count = 0;
     entry_info->retainers_count = 0;
   }
 }
 
+
+bool HeapSnapshotGenerator::ReportProgress(bool force) {
+  const int kProgressReportGranularity = 10000;
+  if (control_ != NULL
+      && (force || progress_counter_ % kProgressReportGranularity == 0)) {
+      return
+          control_->ReportProgressValue(progress_counter_, progress_total_) ==
+          v8::ActivityControl::kContinue;
+  }
+  return true;
+}
+
 } }  // namespace v8::internal
 
 #endif  // ENABLE_LOGGING_AND_PROFILING
 
 #endif  // V8_PROFILE_GENERATOR_INL_H_