uhd: created buffer pool to allocate aligned memory, and implemented in transports

3 files changed, 63 insertions, 3 deletions

diff --git a/host/include/uhd/transport/CMakeLists.txt b/host/include/uhd/transport/CMakeLists.txt
index 2c84c0724..adcfc7598 100644
--- a/host/include/uhd/transport/CMakeLists.txt
+++ b/host/include/uhd/transport/CMakeLists.txt
@@ -21,6 +21,7 @@ INSTALL(FILES
     alignment_buffer.ipp
     bounded_buffer.hpp
     bounded_buffer.ipp
+    buffer_pool.hpp
     convert_types.hpp
     convert_types.ipp
     if_addrs.hpp
diff --git a/host/include/uhd/transport/buffer_pool.hpp b/host/include/uhd/transport/buffer_pool.hpp
new file mode 100644
index 000000000..b6c683948
--- /dev/null
+++ b/host/include/uhd/transport/buffer_pool.hpp
@@ -0,0 +1,59 @@
+//
+// Copyright 2010 Ettus Research LLC
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+//
+
+#ifndef INCLUDED_UHD_TRANSPORT_BUFFER_POOL_HPP
+#define INCLUDED_UHD_TRANSPORT_BUFFER_POOL_HPP
+
+#include <uhd/config.hpp>
+#include <boost/utility.hpp>
+#include <boost/shared_ptr.hpp>
+
+namespace uhd{ namespace transport{
+
+    /*!
+     * A buffer pool manages memory for a homogeneous set of buffers.
+     * Each buffer is the pool start at a 16-byte alignment boundary.
+     */
+    class UHD_API buffer_pool : boost::noncopyable{
+    public:
+        typedef boost::shared_ptr<buffer_pool> sptr;
+        typedef void * ptr_type;
+
+        /*!
+         * Make a new buffer pool.
+         * \param num_buffs the number of buffers to allocate
+         * \param buff_size the size of each buffer in bytes
+         * \param alignment the alignment boundary in bytes
+         * \return a new buffer pool buff_size X num_buffs
+         */
+        static sptr make(
+            const size_t num_buffs,
+            const size_t buff_size,
+            const size_t alignment = 16
+        );
+
+        //! Get a pointer to the buffer start at the specified index
+        virtual ptr_type at(const size_t index) const = 0;
+
+        //! Get the number of buffers in this pool
+        virtual size_t size(void) const = 0;
+    };
+
+}} //namespace
+
+
+#endif /* INCLUDED_UHD_TRANSPORT_BUFFER_POOL_HPP */
diff --git a/host/include/uhd/transport/if_addrs.hpp b/host/include/uhd/transport/if_addrs.hpp
index fbbb35e1d..84f24cb5a 100644
--- a/host/include/uhd/transport/if_addrs.hpp
+++ b/host/include/uhd/transport/if_addrs.hpp
@@ -15,8 +15,8 @@
 // along with this program.  If not, see <http://www.gnu.org/licenses/>.
 //
 
-#ifndef INCLUDED_UHD_IFADDRS_HPP
-#define INCLUDED_UHD_IFADDRS_HPP
+#ifndef INCLUDED_UHD_TRANSPORT_IF_ADDRS_HPP
+#define INCLUDED_UHD_TRANSPORT_IF_ADDRS_HPP
 
 #include <uhd/config.hpp>
 #include <string>
@@ -44,4 +44,4 @@ namespace uhd{ namespace transport{
 }} //namespace
 
 
-#endif /* INCLUDED_UHD_IFADDRS_HPP */
+#endif /* INCLUDED_UHD_TRANSPORT_IF_ADDRS_HPP */