int SoapyRemoteDevice::acquireWriteBuffer(
SoapySDR::Stream *stream,
size_t &handle,
void **buffs,
const long timeoutUs)
{
auto data = (ClientStreamData *)stream;
auto ep = data->endpoint;
if (not ep->waitSend(timeoutUs)) return SOAPY_SDR_TIMEOUT;
return ep->acquireSend(handle, buffs);
}
/*!
Starts sending the data to the specified rank
\param dstRank is the destination rank
*/
void DataCommunicator::startSend(int dstRank)
{
// Wait for the previous send to finish
waitSend(dstRank);
// Id of the buffer
int id = m_sendIds.at(dstRank);
// If the buffer is a double buffer, swap it
SendBuffer &sendBuffer = m_sendBuffers[id];
if (sendBuffer.isDouble()) {
sendBuffer.swap();
}
// Start the send
OBinaryStream &buffer = sendBuffer.getBack();
MPI_Isend(buffer.rawData(), buffer.capacity(), MPI_CHAR, dstRank, m_tag,
m_communicator, &m_sendRequests[id]);
}
