def io_counters()

in ambari-metrics-host-monitoring/src/main/python/psutil/psutil/_pslinux.py [0:0]

• 23 lines of code
• 12 McCabe index (conditional complexity)

        def io_counters(self):
            fname = "/proc/%s/io" % self.pid
            f = open(fname, 'rb')
            SYSCR, SYSCW = b("syscr"), b("syscw")
            READ_BYTES, WRITE_BYTES = b("read_bytes"), b("write_bytes")
            try:
                rcount = wcount = rbytes = wbytes = None
                for line in f:
                    if rcount is None and line.startswith(SYSCR):
                        rcount = int(line.split()[1])
                    elif wcount is None and line.startswith(SYSCW):
                        wcount = int(line.split()[1])
                    elif rbytes is None and line.startswith(READ_BYTES):
                        rbytes = int(line.split()[1])
                    elif wbytes is None and line.startswith(WRITE_BYTES):
                        wbytes = int(line.split()[1])
                for x in (rcount, wcount, rbytes, wbytes):
                    if x is None:
                        raise NotImplementedError(
                            "couldn't read all necessary info from %r" % fname)
                return _common.pio(rcount, wcount, rbytes, wbytes)
            finally:
                f.close()