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/*
(c) Copyright 2006-2007 directfb.org
All rights reserved.
Written by Denis Oliver Kropp <dok@directfb.org>.
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 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, write to the
Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
*/
#include <config.h>
#include <unistd.h>
#include <fusiondale.h>
#include <direct/interface.h>
#include <direct/mem.h>
#include <fusion/shmalloc.h>
#include <core/dale_core.h>
#include <core/messenger.h>
#include <core/messenger_port.h>
#include "ifusiondalemessenger.h"
/**********************************************************************************************************************/
static void
IFusionDaleMessenger_Destruct( IFusionDaleMessenger *thiz )
{
IFusionDaleMessenger_data *data = thiz->priv;
fd_messenger_port_detach( data->port, &data->port->local_reaction );
fd_messenger_port_unref( data->port );
fd_messenger_unref( data->messenger );
DIRECT_DEALLOCATE_INTERFACE( thiz );
}
static DirectResult
IFusionDaleMessenger_AddRef( IFusionDaleMessenger *thiz )
{
DIRECT_INTERFACE_GET_DATA (IFusionDaleMessenger)
data->ref++;
return DR_OK;
}
static DirectResult
IFusionDaleMessenger_Release( IFusionDaleMessenger *thiz )
{
DIRECT_INTERFACE_GET_DATA (IFusionDaleMessenger)
if (--data->ref == 0)
IFusionDaleMessenger_Destruct( thiz );
return DR_OK;
}
static DirectResult
IFusionDaleMessenger_RegisterEvent( IFusionDaleMessenger *thiz,
const char *name,
FDMessengerEventID *ret_id )
{
DirectResult ret;
CoreMessengerEvent *event;
DIRECT_INTERFACE_GET_DATA(IFusionDaleMessenger)
/* Check arguments. */
if (!name || !ret_id)
return DR_INVARG;
/* Lock the messenger. */
ret = fd_messenger_lock( data->messenger );
if (ret)
return ret;
/* Try to lookup event by name. */
ret = fd_messenger_lookup_event( data->messenger, name, &event );
switch (ret) {
case DR_OK:
/* Event is found (already registered). */
ret = DR_BUSY;
break;
case DR_ITEMNOTFOUND:
/* Create a new event. */
ret = fd_messenger_create_event( data->messenger, name, &event );
if (ret == DR_OK)
break;
/* fall through */
default:
/* Unexpected result. */
fd_messenger_unlock( data->messenger );
return ret;
}
/* Keep track of our registration. */
fd_messenger_port_add_event( data->port, event );
/* Return the event id. */
*ret_id = event->id;
/* Unlock the messenger. */
fd_messenger_unlock( data->messenger );
return ret;
}
static DirectResult
IFusionDaleMessenger_UnregisterEvent( IFusionDaleMessenger *thiz,
FDMessengerEventID event_id )
{
DirectResult ret;
DIRECT_INTERFACE_GET_DATA(IFusionDaleMessenger)
/* Check arguments */
if (!event_id)
return DR_INVARG;
/* Lock the messenger (has to happen before port is locked!). */
ret = fd_messenger_lock( data->messenger );
if (ret)
return ret;
/* Let it go. */
ret = fd_messenger_port_remove_event( data->port, event_id );
/* Unlock the messenger. */
fd_messenger_unlock( data->messenger );
return ret;
}
static DirectResult
IFusionDaleMessenger_IsEventRegistered( IFusionDaleMessenger *thiz,
const char *name )
{
DirectResult ret;
DIRECT_INTERFACE_GET_DATA(IFusionDaleMessenger)
/* Check arguments */
if (!name)
return DR_INVARG;
/* Lock the messenger. */
ret = fd_messenger_lock( data->messenger );
if (ret)
return ret;
/* Try to lookup event by name. */
ret = fd_messenger_lookup_event( data->messenger, name, NULL );
/* Unlock the messenger. */
fd_messenger_unlock( data->messenger );
return ret;
}
static DirectResult
IFusionDaleMessenger_RegisterListener( IFusionDaleMessenger *thiz,
FDMessengerEventID event_id,
FDMessengerEventCallback callback,
void *context,
FDMessengerListenerID *ret_id )
{
DirectResult ret;
DIRECT_INTERFACE_GET_DATA(IFusionDaleMessenger)
/* Check arguments */
if (!event_id || !callback || !ret_id)
return DR_INVARG;
/* Lock the messenger (has to happen before port is locked!). */
ret = fd_messenger_lock( data->messenger );
if (ret)
return ret;
ret = fd_messenger_port_add_listener( data->port, event_id, callback, context, ret_id );
/* Unlock the messenger. */
fd_messenger_unlock( data->messenger );
return ret;
}
static DirectResult
IFusionDaleMessenger_UnregisterListener( IFusionDaleMessenger *thiz,
FDMessengerListenerID listener_id )
{
DirectResult ret;
DIRECT_INTERFACE_GET_DATA(IFusionDaleMessenger)
/* Check arguments */
if (!listener_id)
return DR_INVARG;
/* Lock the messenger (has to happen before port is locked!). */
ret = fd_messenger_lock( data->messenger );
if (ret)
return ret;
ret = fd_messenger_port_remove_listener( data->port, listener_id );
/* Unlock the messenger. */
fd_messenger_unlock( data->messenger );
return ret;
}
static DirectResult
IFusionDaleMessenger_SendSimpleEvent( IFusionDaleMessenger *thiz,
FDMessengerEventID event_id,
int param )
{
DirectResult ret;
DIRECT_INTERFACE_GET_DATA(IFusionDaleMessenger)
/* Check arguments */
if (!event_id)
return DR_INVARG;
/* Lock the messenger (has to happen before port is locked!). */
ret = fd_messenger_lock( data->messenger );
if (ret)
return ret;
/* Send the event. */
ret = fd_messenger_port_send_event( data->port, event_id, param, NULL, 0 );
/* Unlock the messenger. */
fd_messenger_unlock( data->messenger );
return ret;
}
static DirectResult
IFusionDaleMessenger_SendEvent( IFusionDaleMessenger *thiz,
FDMessengerEventID event_id,
int param,
void *data_ptr,
unsigned int data_size )
{
DirectResult ret;
DIRECT_INTERFACE_GET_DATA(IFusionDaleMessenger)
/* Check arguments */
if (!event_id || !data_ptr || !data_size)
return DR_INVARG;
/* Lock the messenger (has to happen before port is locked!). */
ret = fd_messenger_lock( data->messenger );
if (ret)
return ret;
/* Send the event. */
ret = fd_messenger_port_send_event( data->port, event_id, param, data_ptr, data_size );
/* Unlock the messenger. */
fd_messenger_unlock( data->messenger );
return ret;
}
static DirectResult
IFusionDaleMessenger_AllocateData( IFusionDaleMessenger *thiz,
unsigned int data_size,
void **ret_data )
{
DirectResult ret;
void *data_ptr;
DIRECT_INTERFACE_GET_DATA(IFusionDaleMessenger)
/* Check arguments */
if (!data_size || !ret_data)
return DR_INVARG;
/* Lock the messenger. */
ret = fd_messenger_lock( data->messenger );
if (ret)
return ret;
/* Allocate the message data. */
data_ptr = SHCALLOC( data->messenger->shmpool, 1, data_size );
/* Unlock the messenger. */
fd_messenger_unlock( data->messenger );
if (!data_ptr)
return D_OOSHM();
*ret_data = data_ptr;
return DR_OK;
}
DirectResult
IFusionDaleMessenger_Construct( IFusionDaleMessenger *thiz,
CoreDale *core,
CoreMessenger *messenger )
{
DirectResult ret;
CoreMessengerPort *port;
/* Allocate interface data. */
DIRECT_ALLOCATE_INTERFACE_DATA( thiz, IFusionDaleMessenger );
/* Increase messenger's reference counter. */
ret = fd_messenger_ref( messenger );
if (ret)
goto error;
/* Create our port for the messenger. */
ret = fd_messenger_port_create( core, messenger, &port );
if (ret)
goto error_port;
/* Initialize interface data. */
data->ref = 1;
data->core = core;
data->messenger = messenger;
data->port = port;
/* Assign interface pointers. */
thiz->AddRef = IFusionDaleMessenger_AddRef;
thiz->Release = IFusionDaleMessenger_Release;
thiz->RegisterEvent = IFusionDaleMessenger_RegisterEvent;
thiz->UnregisterEvent = IFusionDaleMessenger_UnregisterEvent;
thiz->IsEventRegistered = IFusionDaleMessenger_IsEventRegistered;
thiz->RegisterListener = IFusionDaleMessenger_RegisterListener;
thiz->UnregisterListener = IFusionDaleMessenger_UnregisterListener;
thiz->SendSimpleEvent = IFusionDaleMessenger_SendSimpleEvent;
thiz->SendEvent = IFusionDaleMessenger_SendEvent;
thiz->AllocateData = IFusionDaleMessenger_AllocateData;
return DR_OK;
error_port:
fd_messenger_unref( messenger );
error:
DIRECT_DEALLOCATE_INTERFACE( thiz );
return ret;
}
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