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authorNicolas Schodet2012-12-05 00:14:56 +0100
committerNicolas Schodet2012-12-05 00:28:21 +0100
commitf9624f37283dbfd9489205ba0e3f8d29b0f83db2 (patch)
tree31ffda3cd97fec1e08bf441d9dde2a68bab27fa9 /digital/ucoolib/ucoolib/arch/host/mex/mex_node.hh
parentb937879b60f88a67e580b054071c099f66ff32e2 (diff)
digital/ucoolib/ucoolib/arch/host/mex: add mex module
Diffstat (limited to 'digital/ucoolib/ucoolib/arch/host/mex/mex_node.hh')
-rw-r--r--digital/ucoolib/ucoolib/arch/host/mex/mex_node.hh123
1 files changed, 123 insertions, 0 deletions
diff --git a/digital/ucoolib/ucoolib/arch/host/mex/mex_node.hh b/digital/ucoolib/ucoolib/arch/host/mex/mex_node.hh
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+#ifndef ucoolib_arch_host_mex_mex_node_hh
+#define ucoolib_arch_host_mex_mex_node_hh
+// ucoolib - Microcontroller object oriented library. {{{
+//
+// Copyright (C) 2012 Nicolas Schodet
+//
+// APBTeam:
+// Web: http://apbteam.org/
+// Email: team AT apbteam DOT org
+//
+// 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 2 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, write to the Free Software
+// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+//
+// }}}
+#include "ucoolib/common.hh"
+#include "mex_msg.hh"
+#include "mex_socket.hh"
+
+#include <memory>
+#include <map>
+
+namespace ucoo {
+namespace mex {
+
+class Node;
+
+/// Abstract message reception handler.
+class Handler
+{
+ public:
+ /// Handle a received message or request.
+ virtual void handle (Msg &msg) = 0;
+};
+
+/// Helper class for member function reception handler.
+template<class T>
+class HandlerMemfun : public Handler
+{
+ public:
+ HandlerMemfun (T &obj, void (T::*f) (Msg &))
+ : obj_ (obj), f_ (f) { }
+ void handle (Msg &msg) { (obj_.*f_) (msg); }
+ private:
+ T &obj_;
+ void (T::*f_) (Msg &);
+};
+
+/// Helper class for static function reception handler.
+class HandlerPtrfun : public Handler
+{
+ public:
+ HandlerPtrfun (void (*f) (Msg &)) : f_ (f) { }
+ void handle (Msg &msg) { f_ (msg); }
+ private:
+ void (*f_) (Msg &);
+};
+
+/// Mex node, singleton.
+class Node
+{
+ public:
+ /// Connect to mex hub.
+ Node ();
+ /// Disconnect.
+ ~Node ();
+ /// Get single instance, may return NULL if none constructed.
+ static Node *instance () { return instance_; }
+ /// Wait forever.
+ void wait ();
+ /// Wait until date is reached.
+ void wait (uint32_t date);
+ /// Return current date.
+ uint32_t date () const { return date_; }
+ /// Send a message.
+ void send (Msg &msg);
+ /// Send a request and return response.
+ std::auto_ptr<Msg> request (Msg &msg);
+ /// Send a response while handling a request.
+ void response (Msg &msg);
+ /// Reserve a message type.
+ mtype_t reserve (const char *name);
+ /// Register an handler for a message type.
+ void handler_register (mtype_t mtype, Handler &handler);
+ private:
+ /// Receive one message.
+ std::auto_ptr<Msg> recv ();
+ /// Dispatch message to the right handler.
+ void dispatch (Msg &msg);
+ /// Handle an incomming DATE message.
+ void handle_date (Msg &msg);
+ /// Handle an incomming REQ message.
+ void handle_req (Msg &msg);
+ private:
+ /// Pointer to single instance.
+ static Node *instance_;
+ /// Connection to hub.
+ Socket socket_;
+ /// Current date.
+ uint32_t date_;
+ /// When handling a request, this is the request identifier, else -1.
+ int req_;
+ /// Registered handlers.
+ typedef std::map<mtype_t, Handler *> handlers_type;
+ handlers_type handlers_;
+ /// Handlers objects.
+ HandlerMemfun<Node> handler_date, handler_req;
+};
+
+} // namespace mex
+} // namespace ucoo
+
+#endif // ucoolib_arch_host_mex_mex_node_hh