uhd: replaced std::vector<type> for buffer arguments in send/recv

Created new type ref_vector for representing a vector of pointers.
Can be created from std::vector or a pointer.

Removes the convenience constrcutors for send/recv, its not needed.

Removes malloc/free overhead when using send/recv with pointer.

1 files changed, 1 insertions, 1 deletions

diff --git a/host/examples/tx_waveforms.cpp b/host/examples/tx_waveforms.cpp
index dd18d3174..05d49a8b3 100644
--- a/host/examples/tx_waveforms.cpp
+++ b/host/examples/tx_waveforms.cpp
@@ -171,7 +171,7 @@ int UHD_SAFE_MAIN(int argc, char *argv[]){
     //send a mini EOB packet
     md.start_of_burst = false;
     md.end_of_burst   = true;
-    usrp->get_device()->send(NULL, 0, md,
+    usrp->get_device()->send("", 0, md,
         uhd::io_type_t::COMPLEX_FLOAT32,
         uhd::device::SEND_MODE_FULL_BUFF
     );