initial commit

1 files changed, 76 insertions, 0 deletions

diff --git a/src/safe_object.cpp b/src/safe_object.cpp
new file mode 100644
index 0000000..a7c72e6
--- /dev/null
+++ b/src/safe_object.cpp
@@ -0,0 +1,76 @@
+/*
+    Copyright (c) 2007-2009 FastMQ Inc.
+
+    This file is part of 0MQ.
+
+    0MQ is free software; you can redistribute it and/or modify it under
+    the terms of the Lesser GNU General Public License as published by
+    the Free Software Foundation; either version 3 of the License, or
+    (at your option) any later version.
+
+    0MQ 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
+    Lesser GNU General Public License for more details.
+
+    You should have received a copy of the Lesser GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "safe_object.hpp"
+
+zs::safe_object_t::safe_object_t (class dispatcher_t *dispatcher_,
+      int thread_slot_) :
+    object_t (dispatcher_, thread_slot_),
+    processed_seqnum (0),
+    terminating (false)
+{
+}
+
+zs::safe_object_t::safe_object_t (object_t *parent_) :
+    object_t (parent_),
+    processed_seqnum (0),
+    terminating (false)
+{
+}
+
+void zs::safe_object_t::inc_seqnum ()
+{
+    //  This function is called from the sender thread to ensure that this
+    //  object will still exist when the command sent to it arrives in the
+    //  destination thread.
+    sent_seqnum.add (1);
+}
+
+void zs::safe_object_t::process_command (struct command_t &cmd_)
+{
+    object_t::process_command (cmd_);
+
+    //  Adjust sequence number of the last processed command.
+    processed_seqnum++;
+
+    //  If we are already in the termination phase and all commands sent to
+    //  this object are processed, it's safe to deallocate it.
+    if (terminating && sent_seqnum.get () == processed_seqnum)
+        delete this;
+}
+
+void zs::safe_object_t::terminate ()
+{
+    //  Wait till all commands sent to this session are processed.
+    terminating = true;
+
+    //  If there's no pending command we can deallocate the session
+    //  straight saway.
+    if (sent_seqnum.get () == processed_seqnum)
+        delete this;
+}
+
+bool zs::safe_object_t::is_terminating ()
+{
+    return terminating;
+}
+
+zs::safe_object_t::~safe_object_t ()
+{
+}