uhd: removed instances of shared_from_this() in transports

Its known to be slow and using sptrs of large objects.
This should be a slight performance improvement
for libusb and usrp_e100_mmap implementation.

2 files changed, 3 insertions, 4 deletions

diff --git a/host/lib/transport/gen_vrt_if_packet.py b/host/lib/transport/gen_vrt_if_packet.py
index 3ba562d68..3ba562d68 100644..100755
--- a/host/lib/transport/gen_vrt_if_packet.py
+++ b/host/lib/transport/gen_vrt_if_packet.py
diff --git a/host/lib/transport/libusb1_zero_copy.cpp b/host/lib/transport/libusb1_zero_copy.cpp
index d4c82617c..5ae6db39e 100644
--- a/host/lib/transport/libusb1_zero_copy.cpp
+++ b/host/lib/transport/libusb1_zero_copy.cpp
@@ -23,7 +23,6 @@
 #include <uhd/utils/assert.hpp>
 #include <boost/foreach.hpp>
 #include <boost/thread.hpp>
-#include <boost/enable_shared_from_this.hpp>
 #include <vector>
 #include <iostream>
 
@@ -279,7 +278,7 @@ libusb_transfer *usb_endpoint::get_lut_with_wait(double timeout){
 /***********************************************************************
  * USB zero_copy device class
  **********************************************************************/
-class libusb_zero_copy_impl : public usb_zero_copy, public boost::enable_shared_from_this<libusb_zero_copy_impl> {
+class libusb_zero_copy_impl : public usb_zero_copy{
 public:
 
     libusb_zero_copy_impl(
@@ -400,7 +399,7 @@ managed_recv_buffer::sptr libusb_zero_copy_impl::get_recv_buff(double timeout){
     else {
         return managed_recv_buffer::make_safe(
             boost::asio::const_buffer(lut->buffer, lut->actual_length),
-            boost::bind(&libusb_zero_copy_impl::release, shared_from_this(), lut)
+            boost::bind(&libusb_zero_copy_impl::release, this, lut)
         );
     }
 }
@@ -420,7 +419,7 @@ managed_send_buffer::sptr libusb_zero_copy_impl::get_send_buff(double timeout){
     else {
         return managed_send_buffer::make_safe(
             boost::asio::mutable_buffer(lut->buffer, this->get_send_frame_size()),
-            boost::bind(&libusb_zero_copy_impl::commit, shared_from_this(), lut, _1)
+            boost::bind(&libusb_zero_copy_impl::commit, this, lut, _1)
         );
     }
 }