internal int WaitAction(IntPtr userData, IntPtr arg)
{
int proceed = 1;
// Extract the condition list from the pointer and add the condition to it.
GCHandle argGCHandle = GCHandle.FromIntPtr(arg);
WaitActionArg actionArg = (WaitActionArg)argGCHandle.Target;
if (userData == IntPtr.Zero)
{
foreach (IGuardCondition guardCond in actionArg.attachedGuards)
{
if (guardCond.GetTriggerValue())
{
actionArg.Add(guardCond);
}
}
proceed = (actionArg.nrTriggeredConditions == 0) ? 1 : 0;
}
else
{
GCHandle condGCHandle = GCHandle.FromIntPtr(userData);
ICondition cond = condGCHandle.Target as ICondition;
actionArg.Add(cond);
}
argGCHandle.Target = actionArg;
return(proceed);
}
/// <summary>
/// This operation allows an application thread to wait for the occurrence of at least one
/// of the conditions that is attached to the WaitSet.
/// </summary>
/// <param name="activeConditions">a sequence which is used to pass the list of all the attached
/// conditions that have a trigger_value of true.</param>
/// <param name="timeout">the maximum duration to block for the wait, after which the application thread
/// is unblocked. The special constant Infinite can be used when the maximum waiting time does not
/// need to be bounded.</param>
/// <returns>Possible return codes for the operation are:
/// Ok, Error, OutOfResources, Timeout or PreconditionNotMet</returns>
public ReturnCode Wait(ref ICondition[] activeConditions, Duration timeout)
{
ReturnCode result = DDS.ReturnCode.Ok;
ReportStack.Start();
WaitActionArg arg = new WaitActionArg(activeConditions);
if (QosManager.countErrors(timeout) > 0)
{
result = DDS.ReturnCode.BadParameter;
ReportStack.Report(result, "Duration timeout incorrect");
}
while (result == DDS.ReturnCode.Ok && arg.nrTriggeredConditions == 0)
{
lock (this)
{
arg.maxConditions = conditionList.Count + guardList.Count;
arg.attachedGuards = guardList.ToArray();
if (activeConditions == null)
{
activeConditions = new ICondition[arg.maxConditions];
}
}
GCHandle argGCHandle = GCHandle.Alloc(arg, GCHandleType.Normal);
V_RESULT uResult = DDS.OpenSplice.User.WaitSet.WaitAction2(
rlReq_UserPeer,
WaitAction,
GCHandle.ToIntPtr(argGCHandle),
timeout.OsDuration);
if (uResult == V_RESULT.DETACHING)
{
arg = (WaitActionArg)argGCHandle.Target;
lock (this)
{
foreach (ICondition cond in conditionList)
{
Condition condImpl = cond as Condition;
if (condImpl.IsAlive() == DDS.ReturnCode.AlreadyDeleted)
{
arg.Add(cond);
}
}
}
result = DDS.ReturnCode.Ok;
}
else
{
result = SacsSuperClass.uResultToReturnCode(uResult);
arg = (WaitActionArg)argGCHandle.Target;
}
argGCHandle.Free();
activeConditions = arg.Finalize();
}
ReportStack.Flush(this, (result != ReturnCode.Ok) && (result != ReturnCode.Timeout));
return(result);
}