static void
handle_method_call (GDBusConnection *connection,
const gchar *sender,
const gchar *object_path,
const gchar *interface_name,
const gchar *method_name,
GVariant *parameters,
GDBusMethodInvocation *invocation,
gpointer user_data)
{
SensorData *data = user_data;
DriverType driver_type;
GHashTable *ht;
guint watch_id;
if (g_strcmp0 (method_name, "ClaimAccelerometer") == 0 ||
g_strcmp0 (method_name, "ReleaseAccelerometer") == 0)
driver_type = DRIVER_TYPE_ACCEL;
else if (g_strcmp0 (method_name, "ClaimLight") == 0 ||
g_strcmp0 (method_name, "ClaimAccelerometer") == 0)
driver_type = DRIVER_TYPE_LIGHT;
else {
g_dbus_method_invocation_return_error (invocation,
G_DBUS_ERROR,
G_DBUS_ERROR_UNKNOWN_METHOD,
"Method '%s' does not exist", method_name);
return;
}
ht = data->clients[driver_type];
if (g_str_has_prefix (method_name, "Claim")) {
watch_id = GPOINTER_TO_UINT (g_hash_table_lookup (ht, sender));
if (watch_id > 0) {
g_dbus_method_invocation_return_value (invocation, NULL);
return;
}
/* No other clients for this sensor? Start it */
if (driver_type_exists (data, driver_type) &&
g_hash_table_size (ht) == 0)
driver_set_polling (DRIVER_FOR_TYPE(driver_type), TRUE);
watch_id = g_bus_watch_name_on_connection (data->connection,
sender,
G_BUS_NAME_WATCHER_FLAGS_NONE,
NULL,
client_vanished_cb,
data,
NULL);
g_hash_table_insert (ht, g_strdup (sender), GUINT_TO_POINTER (watch_id));
g_dbus_method_invocation_return_value (invocation, NULL);
} else if (g_str_has_prefix (method_name, "Release")) {
client_release (data, sender, driver_type);
g_dbus_method_invocation_return_value (invocation, NULL);
}
}
static void
handle_generic_method_call (SensorData *data,
const gchar *sender,
const gchar *object_path,
const gchar *interface_name,
const gchar *method_name,
GVariant *parameters,
GDBusMethodInvocation *invocation,
DriverType driver_type)
{
GHashTable *ht;
guint watch_id;
g_debug ("Handling driver refcounting method '%s' for %s device",
method_name, driver_type_to_str (driver_type));
ht = data->clients[driver_type];
if (g_str_has_prefix (method_name, "Claim")) {
watch_id = GPOINTER_TO_UINT (g_hash_table_lookup (ht, sender));
if (watch_id > 0) {
g_dbus_method_invocation_return_value (invocation, NULL);
return;
}
/* No other clients for this sensor? Start it */
if (driver_type_exists (data, driver_type) &&
g_hash_table_size (ht) == 0)
driver_set_polling (DRIVER_FOR_TYPE(driver_type), TRUE);
watch_id = g_bus_watch_name_on_connection (data->connection,
sender,
G_BUS_NAME_WATCHER_FLAGS_NONE,
NULL,
client_vanished_cb,
data,
NULL);
g_hash_table_insert (ht, g_strdup (sender), GUINT_TO_POINTER (watch_id));
g_dbus_method_invocation_return_value (invocation, NULL);
} else if (g_str_has_prefix (method_name, "Release")) {
client_release (data, sender, driver_type);
g_dbus_method_invocation_return_value (invocation, NULL);
}
}
static void
client_release (SensorData *data,
const char *sender,
DriverType driver_type)
{
GHashTable *ht;
guint watch_id;
ht = data->clients[driver_type];
watch_id = GPOINTER_TO_UINT (g_hash_table_lookup (ht, sender));
if (watch_id == 0)
return;
g_hash_table_remove (ht, sender);
if (g_hash_table_size (ht) == 0)
driver_set_polling (DRIVER_FOR_TYPE(driver_type), FALSE);
}
static void
sensor_changes (GUdevClient *client,
gchar *action,
GUdevDevice *device,
SensorData *data)
{
guint i;
if (g_strcmp0 (action, "remove") == 0) {
for (i = 0; i < NUM_SENSOR_TYPES; i++) {
GUdevDevice *dev = DEVICE_FOR_TYPE(i);
if (!dev)
continue;
if (g_strcmp0 (g_udev_device_get_sysfs_path (device), g_udev_device_get_sysfs_path (dev)) == 0) {
g_debug ("Sensor type %s got removed (%s)",
driver_type_to_str (i),
g_udev_device_get_sysfs_path (dev));
g_clear_object (&DEVICE_FOR_TYPE(i));
DRIVER_FOR_TYPE(i) = NULL;
g_clear_pointer (&data->clients[i], g_hash_table_unref);
data->clients[i] = create_clients_hash_table ();
send_driver_changed_dbus_event (data, i);
}
}
if (!any_sensors_left (data))
g_main_loop_quit (data->loop);
} else if (g_strcmp0 (action, "add") == 0) {
guint i;
for (i = 0; i < G_N_ELEMENTS(drivers); i++) {
SensorDriver *driver = (SensorDriver *) drivers[i];
if (!driver_type_exists (data, driver->type) &&
driver_discover (driver, device)) {
g_debug ("Found hotplugged device %s of type %s at %s",
g_udev_device_get_sysfs_path (device),
driver_type_to_str (driver->type),
driver->name);
if (driver_open (driver, device,
driver_type_to_callback_func (driver->type), data)) {
GHashTable *ht;
DEVICE_FOR_TYPE(driver->type) = g_object_ref (device);
DRIVER_FOR_TYPE(driver->type) = (SensorDriver *) driver;
send_driver_changed_dbus_event (data, driver->type);
ht = data->clients[driver->type];
if (g_hash_table_size (ht) > 0)
driver_set_polling (DRIVER_FOR_TYPE(driver->type), TRUE);
}
break;
}
}
}
}
