d0e96358ea
It's not acceptable to assume that the underlying implementation uses a GTask, so we have to defer the finish function to the implementation as well
138 lines
3.9 KiB
C
138 lines
3.9 KiB
C
/* WirePlumber
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*
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* Copyright © 2023 Collabora Ltd.
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* @author George Kiagiadakis <george.kiagiadakis@collabora.com>
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*
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* SPDX-License-Identifier: MIT
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*/
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#include "internal-comp-loader.h"
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#include "wp.h"
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#include "registry.h"
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WP_DEFINE_LOCAL_LOG_TOPIC ("wp-internal-comp-loader")
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struct _WpInternalCompLoader
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{
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GObject parent;
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};
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static void wp_internal_comp_loader_iface_init (WpComponentLoaderInterface * iface);
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G_DEFINE_TYPE_WITH_CODE (WpInternalCompLoader, wp_internal_comp_loader,
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G_TYPE_OBJECT, G_IMPLEMENT_INTERFACE (
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WP_TYPE_COMPONENT_LOADER,
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wp_internal_comp_loader_iface_init))
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#define WP_MODULE_INIT_SYMBOL "wireplumber__module_init"
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typedef GObject * (*WpModuleInitFunc) (WpCore *, WpSpaJson *, GError **);
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static void
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wp_internal_comp_loader_init (WpInternalCompLoader * self)
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{
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}
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static void
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wp_internal_comp_loader_class_init (WpInternalCompLoaderClass * klass)
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{
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}
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static GObject *
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load_module (WpCore * core, const gchar * module_name, WpSpaJson * args,
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GError ** error)
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{
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g_autofree gchar *module_path = NULL;
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GModule *gmodule;
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gpointer module_init;
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if (!g_file_test (module_name, G_FILE_TEST_EXISTS))
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module_path = g_module_build_path (wp_get_module_dir (), module_name);
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else
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module_path = g_strdup (module_name);
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wp_debug_object (core, "loading %s from %s", module_name, module_path);
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gmodule = g_module_open (module_path, G_MODULE_BIND_LOCAL);
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if (!gmodule) {
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g_set_error (error, WP_DOMAIN_LIBRARY, WP_LIBRARY_ERROR_OPERATION_FAILED,
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"Failed to open %s: %s", module_path, g_module_error ());
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return NULL;
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}
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if (!g_module_symbol (gmodule, WP_MODULE_INIT_SYMBOL, &module_init)) {
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g_set_error (error, WP_DOMAIN_LIBRARY, WP_LIBRARY_ERROR_OPERATION_FAILED,
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"Failed to locate symbol " WP_MODULE_INIT_SYMBOL " in %s",
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module_path);
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g_module_close (gmodule);
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return NULL;
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}
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return ((WpModuleInitFunc) module_init) (core, args, error);
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}
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static void
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on_object_activated (WpObject *object, GAsyncResult *res, gpointer data)
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{
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g_autoptr (GTask) task = G_TASK (data);
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g_autoptr (GError) error = NULL;
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if (!wp_object_activate_finish (object, res, &error)) {
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g_task_return_error (task, g_steal_pointer (&error));
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return;
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}
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g_task_return_pointer (task, g_object_ref (object), g_object_unref);
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}
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static gboolean
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wp_internal_comp_loader_supports_type (WpComponentLoader * cl,
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const gchar * type)
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{
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return g_str_equal (type, "module");
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}
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static void
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wp_internal_comp_loader_load (WpComponentLoader * self, WpCore * core,
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const gchar * component, const gchar * type, WpSpaJson * args,
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GCancellable * cancellable, GAsyncReadyCallback callback, gpointer data)
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{
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g_autoptr (GTask) task = g_task_new (self, cancellable, callback, data);
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g_autoptr (GError) error = NULL;
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g_autoptr (GObject) o = NULL;
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g_task_set_source_tag (task, wp_internal_comp_loader_load);
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/* load Module */
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o = load_module (core, component, args, &error);
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if (!o) {
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g_task_return_error (task, g_steal_pointer (&error));
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return;
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}
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/* store object in the registry */
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wp_registry_register_object (wp_core_get_registry (core), g_object_ref (o));
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if (WP_IS_OBJECT (o)) {
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/* WpObject needs to be activated */
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wp_object_activate (WP_OBJECT (o), WP_OBJECT_FEATURES_ALL, NULL,
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(GAsyncReadyCallback) on_object_activated, g_object_ref (task));
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}
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}
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static GObject *
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wp_internal_comp_loader_load_finish (WpComponentLoader * self,
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GAsyncResult * res, GError ** error)
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{
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g_return_val_if_fail (
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g_async_result_is_tagged (res, wp_internal_comp_loader_load), NULL);
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return g_task_propagate_pointer (G_TASK (res), error);
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}
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static void
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wp_internal_comp_loader_iface_init (WpComponentLoaderInterface * iface)
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{
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iface->supports_type = wp_internal_comp_loader_supports_type;
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iface->load = wp_internal_comp_loader_load;
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iface->load_finish = wp_internal_comp_loader_load_finish;
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}
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