uhd: add cut-down rpclib source tree and import tool

1 files changed, 44 insertions, 0 deletions

diff --git a/host/lib/deps/rpclib/include/rpc/this_session.h b/host/lib/deps/rpclib/include/rpc/this_session.h
new file mode 100644
index 000000000..d391c1838
--- /dev/null
+++ b/host/lib/deps/rpclib/include/rpc/this_session.h
@@ -0,0 +1,44 @@
+#pragma once
+
+#ifndef THIS_SESSION_H_HTS95N7G
+#define THIS_SESSION_H_HTS95N7G
+
+#include <atomic>
+#include "rpc/config.h"
+
+namespace rpc {
+
+namespace detail {
+class server_session;
+}
+
+//! \brief Encapsulates information about the server session/connection
+//! this handler is running in. This is the interface through which bound
+//! functions may interact with the session.
+//! \note Accessing the this_session() object is thread safe, but incurs some
+//! syncrhonization cost in the form of atomic flags. (usually not a concern)
+class this_session_t {
+public:
+    //! \brief Gracefully exits the session (i.e. ongoing writes and reads are
+    //! completed; queued writes and reads are not).
+    //! \note Use this function if you need to close the connection from a
+    //! handler.
+    void post_exit();
+
+    friend class rpc::detail::server_session;
+
+private:
+    void clear();
+
+    std::atomic_bool exit_{false};
+};
+
+//! \brief A thread-local object that can be used to control the currently
+//! active server session.
+//! \note Accessing this object outside of handlers while a server is
+//! running is potentially unsafe.
+this_session_t &this_session();
+
+} /* rpc */
+
+#endif /* end of include guard: THIS_SESSION_H_HTS95N7G */