+ raise ValueError("{} is not a power of two".format(a))
+
+
+def _check_log_level(log_level):
+ _check_int(log_level)
+
+ log_levels = (
+ bt2_logging.LoggingLevel.TRACE,
+ bt2_logging.LoggingLevel.DEBUG,
+ bt2_logging.LoggingLevel.INFO,
+ bt2_logging.LoggingLevel.WARNING,
+ bt2_logging.LoggingLevel.ERROR,
+ bt2_logging.LoggingLevel.FATAL,
+ bt2_logging.LoggingLevel.NONE,
+ )
+
+ if log_level not in log_levels:
+ raise ValueError("'{}' is not a valid logging level".format(log_level))
+
+
+def _handle_func_status(status, msg=None):
+ if status == native_bt.__BT_FUNC_STATUS_OK:
+ # no error
+ return
+
+ if status == native_bt.__BT_FUNC_STATUS_ERROR:
+ assert msg is not None
+ raise bt2._Error(msg)
+ elif status == native_bt.__BT_FUNC_STATUS_MEMORY_ERROR:
+ assert msg is not None
+ raise bt2._MemoryError(msg)
+ elif status == native_bt.__BT_FUNC_STATUS_END:
+ if msg is None:
+ raise bt2.Stop
+ else:
+ raise bt2.Stop(msg)
+ elif status == native_bt.__BT_FUNC_STATUS_AGAIN:
+ if msg is None:
+ raise bt2.TryAgain
+ else:
+ raise bt2.TryAgain(msg)
+ elif status == native_bt.__BT_FUNC_STATUS_OVERFLOW_ERROR:
+ if msg is None:
+ raise bt2._OverflowError
+ else:
+ raise bt2._OverflowError(msg)
+ elif status == native_bt.__BT_FUNC_STATUS_UNKNOWN_OBJECT:
+ if msg is None:
+ raise bt2.UnknownObject
+ else:
+ raise bt2.UnknownObject(msg)