class MemoryIO::Process

def bases
  file = "/proc/#{@pid}/maps"
  stat = MemoryIO::Util.file_permission(file)
  return {} unless stat&.readable?
  maps = ::IO.binread(file).split("\n").map do |line|
    # 7f76515cf000-7f76515da000 r-xp 00000000 fd:01 29360257  /lib/x86_64-linux-gnu/libnss_files-2.24.so
    addr, _perm, _offset, _dev, _inode, pathname = line.strip.split(' ', 6)
    next nil if pathname.nil?
    addr = addr.to_i(16)
    pathname = pathname[1..-2] if pathname =~ /^\[.+\]$/
    pathname = ::File.basename(pathname)
    [MemoryIO::Util.trim_libname(pathname).to_sym, addr]
  end
  maps.compact.reverse.to_h
end