segfault.cc

unsigned long dump(
  FileOutputStream* fninfo_stream,
  const HeapProfiler* profiler,
  const HeapGraphNode* node,
  unsigned int visited_count = 0, 
  unsigned int seen_closures = false,
  std::set<SnapshotObjectId>* visited = NULL,
  StringSet* strings = new StringSet
) {
  bool cleanup = visited == NULL;
  if (cleanup) {
    visited = new std::set<SnapshotObjectId>();
  }
  SnapshotObjectId id = node->GetId();
  //if (node->GetName()->IsString()==false) printf("TYPE OF NAME %s\n", strForValueType(node->GetName()));
  const char* node_name = *String::Utf8Value(node->GetName());

  std::set<SnapshotObjectId>::iterator pos = visited->find(id);
  if (pos != visited->end()) {
    return visited_count;
  }
  visited->insert(id);
  visited_count++;

  HeapGraphNode::Type node_type = node->GetType();
  if (node_type == HeapGraphNode::Type::kClosure) {
    if (seen_closures) {
      fninfo_stream->WriteAsciiChunk(",\n", 2);
    }
    dumpHeapGraphNode(fninfo_stream, profiler, node, strings); 
    seen_closures = true;
  }
  for (unsigned int i = 0; i < node->GetChildrenCount(); i++) {
    const HeapGraphEdge* edge = node->GetChild(i); // this causes a segfault?
    const String::Utf8Value utf8(edge->GetName());
    const char* name = *utf8;
    const HeapGraphNode* child = edge->GetToNode();
    visited_count = dump(fninfo_stream, profiler, child, visited_count, seen_closures, visited, strings); 
  }
  // fprintf(stderr, "<<\n");
  if (cleanup) {
    free(visited);
  }
  return visited_count;
}