elf_symbolizer.py 文件源码

def __init__(self, symbolizer):
      self._symbolizer = symbolizer
      self._lib_file_name = posixpath.basename(symbolizer.elf_file_path)

      # The request queue (i.e. addresses pushed to addr2line's stdin and not
      # yet retrieved on stdout)
      self._request_queue = collections.deque()

      # This is essentially len(self._request_queue). It has been optimized to a
      # separate field because turned out to be a perf hot-spot.
      self.queue_size = 0

      # Keep track of the number of symbols a process has processed to
      # avoid a single process growing too big and using all the memory.
      self._processed_symbols_count = 0

      # Objects required to handle the addr2line subprocess.
      self._proc = None  # Subprocess.Popen(...) instance.
      self._thread = None  # Threading.thread instance.
      self._out_queue = None  # Queue.Queue instance (for buffering a2l stdout).
      self._RestartAddr2LineProcess()