GlobalValues

GlobalValue objects provide a mechanism for default values not associated with particular object instantiations. This is useful, for example, when working with global functions.

Specific Types

Doubles

To declare a double valued global parameter, do something like the following:

#include "ns3/global-value.h"
#include "ns3/double.h"

GlobalValue g_sampleInterval("SampleInterval",
		             "How frequently samples are made.",
			     Double(2.0),
			     MakeDoubleChecker<double>(0.0));

The optional parameter to MakeDoubleChecker defines the minimum for the value. A second optional parameter would define the maximum. By creating a Double object w/ value 2, we set 2 as the default for this parameter.

To fetch the value at any point, do something like:

  Simulator::Schedule(Seconds(((Double)(g_sampleInterval
					.GetValue())).Get()),
		      Example::Sample);