1 files changed, 72 insertions, 0 deletions
diff --git a/odb/session.cxx b/odb/session.cxx
new file mode 100644
index 0000000..b34c1d7
--- /dev/null
+++ b/odb/session.cxx
@@ -0,0 +1,72 @@
+// file      : odb/session.cxx
+// author    : Boris Kolpackov <boris@codesynthesis.com>
+// copyright : Copyright (c) 2009-2010 Code Synthesis Tools CC
+// license   : GNU GPL v2; see accompanying LICENSE file
+
+#include <odb/exceptions.hxx>
+#include <odb/session.hxx>
+
+#include <odb/details/tls.hxx>
+
+namespace odb
+{
+  using namespace details;
+
+  static ODB_TLS_POINTER (session) current_session;
+
+  session::
+  session ()
+  {
+    if (has_current ())
+      throw already_in_session ();
+
+    current (*this);
+  }
+
+  session::
+  ~session ()
+  {
+    // If we are the current thread's session, reset it.
+    //
+    if (has_current () && &current () == this)
+      reset_current ();
+  }
+
+  bool session::
+  has_current ()
+  {
+    return tls_get (current_session) != 0;
+  }
+
+  session& session::
+  current ()
+  {
+    session* cur (tls_get (current_session));
+
+    if (cur == 0)
+      throw not_in_session ();
+
+    return *cur;
+  }
+
+  void session::
+  current (session& s)
+  {
+    tls_set (current_session, &s);
+  }
+
+  void session::
+  reset_current ()
+  {
+    session* s (0);
+    tls_set (current_session, s);
+  }
+
+  //
+  // object_map_base
+  //
+  session::object_map_base::
+  ~object_map_base ()
+  {
+  }
+}