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/* Copyright (C) 2010 The giomm Development Team
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include <gio/gio.h>
#include <glibmm/exceptionhandler.h>
namespace // anonymous
{
using SocketControlMessage_deserialize_vfunc_functype = GSocketControlMessage* (*)
(int level, int type, gsize size, gpointer data);
SocketControlMessage_deserialize_vfunc_functype SocketControlMessage_deserialize_vfunc_funcptr;
extern "C"
{
static GSocketControlMessage*
SocketControlMessage_deserialize_vfunc_c_callback(int level, int type, gsize size, gpointer data)
{
return SocketControlMessage_deserialize_vfunc_funcptr(level, type, size, data);
}
} // extern "C"
} // anonymous namespace
namespace Gio
{
// static
std::set<SocketControlMessage::DeserializeFunc> SocketControlMessage::m_deserialize_funcs;
GSocketControlMessage* SocketControlMessage_Class::deserialize_vfunc_callback(
int level, int type, gsize size, gpointer data)
{
// Loop through all registered deserialize functions.
// Accept the returned message from the first function that has been able to
// deserialize the message. g_socket_control_message_deserialize() loops
// through all subclasses of GSocketControlMessage in this way.
for (auto deserialize_func : CppObjectType::m_deserialize_funcs)
{
try // Trap C++ exceptions which would normally be lost because this is a C callback.
{
// Call the function which has been registered with add_deserialize_func().
Glib::RefPtr<SocketControlMessage> msg = deserialize_func(level, type, size, data);
if (msg)
{
msg->reference(); // Give the caller a reference.
return msg->gobj();
}
}
catch (...)
{
Glib::exception_handlers_invoke();
}
}
// Don't call the original underlying C function (GSocketControlMessage.deserialize()).
// Let g_socket_control_message_deserialize() do that as a last resort,
// if it's appropriate.
return nullptr;
}
// static
void SocketControlMessage::add_deserialize_func(DeserializeFunc func)
{
// std::set never contains duplicates.
m_deserialize_funcs.insert(func);
}
} // namespace Gio
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