def verify_valid_gdb_subprocess(self):
if not self.gdb_process:<EOL><INDENT>raise NoGdbProcessError("<STR_LIT>")<EOL><DEDENT>elif self.gdb_process.poll() is not None:<EOL><INDENT>raise NoGdbProcessError(<EOL>"<STR_LIT>"<EOL>% str(self.gdb_process.poll())<EOL>)<EOL><DEDENT>
Verify there is a process object, and that it is still running.
        Raise NoGdbProcessError if either of the above are not true.