Hi, in the method usrp2::eth_buffer::open in case the attempt to use the socket option PACKET_RX_RING fails an mmap is performed instead of a malloc.
The method usrp2::eth_buffer::close however has to perform a munmap in order to let the kernel release the mapped memory, indeed only closing the file descriptor isn't enough. I suggest to change (inside the close method): if (!d_using_tpring && d_buf) free(d_buf); to: if (!d_using_tpring) { free(d_buf); } else { if (d_buf) munmap(d_buf, d_buflen); } note that there is no need to test for d_buf in case of free call indeed freeing a pointer to 0 is perfect valid code, the standard say that in case of free(NULL) no action is taken, to the other side munmap a NULL pointer is not permitted (hence the test). Regards Gaetano Mendola -- cpp-today.blogspot.com _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio