/// <summary>
/// Captures a snapshot of the program state.
/// </summary>
/// <param name="state">Captured state</param>
/// <param name="fingerprint">Fingerprint</param>
/// <param name="fingerprintIndexMap">Fingerprint to schedule step index map</param>
/// <param name="scheduleStep">ScheduleStep</param>
/// <param name="monitors">List of monitors</param>
/// <returns>True if state already exists</returns>
internal bool CaptureState(out State state, out Fingerprint fingerprint, Dictionary <Fingerprint, List <int> > fingerprintIndexMap,
ScheduleStep scheduleStep, List <Monitor> monitors)
{
fingerprint = Runtime.GetProgramState();
var enabledMachineIds = Runtime.Scheduler.GetEnabledSchedulableIds();
state = new State(fingerprint, enabledMachineIds, GetMonitorStatus(monitors));
if (Debug.IsEnabled)
{
if (scheduleStep.Type == ScheduleStepType.SchedulingChoice)
{
Debug.WriteLine("<LivenessDebug> Captured program state '{0}' at " +
"scheduling choice.", fingerprint.GetHashCode());
}
else if (scheduleStep.Type == ScheduleStepType.NondeterministicChoice &&
scheduleStep.BooleanChoice != null)
{
Debug.WriteLine("<LivenessDebug> Captured program state '{0}' at nondeterministic " +
"choice '{1}'.", fingerprint.GetHashCode(), scheduleStep.BooleanChoice.Value);
}
else if (scheduleStep.Type == ScheduleStepType.FairNondeterministicChoice &&
scheduleStep.BooleanChoice != null)
{
Debug.WriteLine("<LivenessDebug> Captured program state '{0}' at fair nondeterministic choice " +
"'{1}-{2}'.", fingerprint.GetHashCode(), scheduleStep.NondetId, scheduleStep.BooleanChoice.Value);
}
else if (scheduleStep.Type == ScheduleStepType.NondeterministicChoice &&
scheduleStep.IntegerChoice != null)
{
Debug.WriteLine("<LivenessDebug> Captured program state '{0}' at nondeterministic " +
"choice '{1}'.", fingerprint.GetHashCode(), scheduleStep.IntegerChoice.Value);
}
}
var stateExists = Fingerprints.Contains(fingerprint);
Fingerprints.Add(fingerprint);
scheduleStep.State = state;
if (!fingerprintIndexMap.ContainsKey(fingerprint))
{
var hs = new List <int> {
scheduleStep.Index
};
fingerprintIndexMap.Add(fingerprint, hs);
}
else
{
fingerprintIndexMap[fingerprint].Add(scheduleStep.Index);
}
return(stateExists);
}
