public virtual ReturnCode ReturnLoan(
ref T[] data,
ref SampleInfo[] sampleInfos)
{
ReturnCode result = DDS.ReturnCode.AlreadyDeleted;
ReportStack.Start();
lock (this)
{
if (this.rlReq_isAlive)
{
if (data != null && sampleInfos != null)
{
if (data.Length == sampleInfos.Length)
{
data = null;
sampleInfos = null;
result = DDS.ReturnCode.Ok;
}
else
{
result = DDS.ReturnCode.PreconditionNotMet;
ReportStack.Report(result, "data and sampleInfo arrays have unequal length");
}
}
else
{
result = DDS.ReturnCode.PreconditionNotMet;
ReportStack.Report(result, "data and/or sampleInfo arrays may not be null");
}
}
}
ReportStack.Flush(this, result != ReturnCode.Ok);
return(result);
}
public ReturnCode GetMatchedSubscriptionData(
ref SubscriptionBuiltinTopicData subscriptionData,
InstanceHandle subscriptionHandle)
{
ReturnCode result = DDS.ReturnCode.BadParameter;
ReportStack.Start();
if (this.rlReq_isAlive)
{
if (subscriptionHandle != InstanceHandle.Nil)
{
GCHandle dataGCHandle = GCHandle.Alloc(subscriptionData, GCHandleType.Normal);
result = uResultToReturnCode(
User.Writer.GetMatchedSubscriptionData(
rlReq_UserPeer,
subscriptionHandle,
CopyMatchedSubscriptionData,
GCHandle.ToIntPtr(dataGCHandle)));
subscriptionData = dataGCHandle.Target as SubscriptionBuiltinTopicData;
dataGCHandle.Free();
}
else
{
result = ReturnCode.BadParameter;
ReportStack.Report(result, "subscriptionHandle = DDS.InstanceHandle.Nil.");
}
}
else
{
result = DDS.ReturnCode.AlreadyDeleted;
}
ReportStack.Flush(this, result != ReturnCode.Ok);
return(result);
}
public virtual ReturnCode TakeNextInstanceWithCondition(
ref T[] data,
ref SampleInfo[] sampleInfos,
int maxSamples,
InstanceHandle instanceHandle,
IReadCondition condition)
{
ReturnCode result;
ReadCondition rcObj = condition as ReadCondition;
ReportStack.Start();
if (rcObj == null)
{
result = DDS.ReturnCode.BadParameter;
ReportStack.Report(result, "condition is invalid (null), or not of type " +
"DDS::OpenSplice::ReadCondition.");
}
else
{
IntPtr sampleList = Common.SampleList.New(0);
if (sampleList == IntPtr.Zero)
{
result = DDS.ReturnCode.OutOfResources;
ReportStack.Report(result, "Unable to allocate sampleList.");
}
else
{
lock (this)
{
if (this.rlReq_isAlive)
{
result = wlReq_CheckReaderPreConditions(data, sampleInfos, maxSamples, rcObj);
if (result == DDS.ReturnCode.Ok)
{
int realMax = RealMaxSamples(data, maxSamples);
Common.SampleList.Reset(sampleList, realMax);
result = rcObj.TakeNextInstance(instanceHandle, sampleList);
}
}
else
{
result = DDS.ReturnCode.AlreadyDeleted;
}
}
if (result == DDS.ReturnCode.Ok || result == ReturnCode.NoData)
{
result = ReaderCopy(sampleList, ref data, ref sampleInfos);
}
Common.SampleList.Free(sampleList);
}
}
ReportStack.Flush(this, (result != ReturnCode.Ok) && (result != ReturnCode.NoData));
return(result);
}
public virtual ReturnCode TakeNextInstance(
ref T[] data,
ref SampleInfo[] sampleInfos,
int maxSamples,
InstanceHandle instanceHandle,
SampleStateKind sampleStates,
ViewStateKind viewStates,
InstanceStateKind instanceStates)
{
ReturnCode result;
ReportStack.Start();
IntPtr sampleList = Common.SampleList.New(0);
if (sampleList == IntPtr.Zero)
{
result = DDS.ReturnCode.OutOfResources;
ReportStack.Report(result, "Unable to allocate sampleList.");
}
else
{
lock (this)
{
if (this.rlReq_isAlive)
{
result = CheckReaderPreConditions(data, sampleInfos, maxSamples, sampleStates, viewStates, instanceStates);
if (result == DDS.ReturnCode.Ok)
{
uint mask = StateMask(sampleStates, viewStates, instanceStates);
int realMax = RealMaxSamples(data, maxSamples);
Common.SampleList.Reset(sampleList, realMax);
result = uResultToReturnCode(
User.Reader.TakeNextInstance(
rlReq_UserPeer,
instanceHandle,
mask,
Common.SampleList.ReaderAction,
sampleList, DDS.Duration.Zero.OsDuration));
}
}
else
{
result = DDS.ReturnCode.AlreadyDeleted;
}
}
if (result == DDS.ReturnCode.Ok || result == ReturnCode.NoData)
{
result = ReaderCopy(sampleList, ref data, ref sampleInfos);
}
Common.SampleList.Free(sampleList);
}
ReportStack.Flush(this, (result != ReturnCode.Ok) && (result != ReturnCode.NoData));
return(result);
}