* 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.
+ * Public License along with this library; if not, see <http://www.gnu.org/licenses/>.
*
* Author: Alexander Larsson <alexl@redhat.com>
*/
#include "gsocks5proxy.h"
#include "gtlsbackend.h"
#include "gvfs.h"
+#include "gnotificationbackend.h"
#ifdef G_OS_WIN32
#include "gregistrysettingsbackend.h"
#endif
* SECTION:extensionpoints
* @short_description: Extension Points
* @include: gio.h
- * @see_also: <link linkend="extending-gio">Extending GIO</link>
+ * @see_also: [Extending GIO][extending-gio]
*
* #GIOExtensionPoint provides a mechanism for modules to extend the
* functionality of the library or application that loaded it in an
* organized fashion.
*
* An extension point is identified by a name, and it may optionally
- * require that any implementation must by of a certain type (or derived
+ * require that any implementation must be of a certain type (or derived
* thereof). Use g_io_extension_point_register() to register an
* extension point, and g_io_extension_point_set_required_type() to
* set a required type.
* of an extension point has a name, and a priority. Use
* g_io_extension_point_implement() to implement an extension point.
*
- * |[
+ * |[<!-- language="C" -->
* GIOExtensionPoint *ep;
*
- * /* Register an extension point */
+ * // Register an extension point
* ep = g_io_extension_point_register ("my-extension-point");
* g_io_extension_point_set_required_type (ep, MY_TYPE_EXAMPLE);
* ]|
*
- * |[
- * /* Implement an extension point */
+ * |[<!-- language="C" -->
+ * // Implement an extension point
* G_DEFINE_TYPE (MyExampleImpl, my_example_impl, MY_TYPE_EXAMPLE);
* g_io_extension_point_implement ("my-extension-point",
* my_example_impl_get_type (),
*
* To avoid opening all modules just to find out what extension
* points they implement, GIO makes use of a caching mechanism,
- * see <link linkend="gio-querymodules">gio-querymodules</link>.
+ * see [gio-querymodules][gio-querymodules].
* You are expected to run this command after installing a
* GIO module.
*
- * The <envar>GIO_EXTRA_MODULES</envar> environment variable can be
- * used to specify additional directories to automatically load modules
+ * The `GIO_EXTRA_MODULES` environment variable can be used to
+ * specify additional directories to automatically load modules
* from. This environment variable has the same syntax as the
- * <envar>PATH</envar>. If two modules have the same base name in different
+ * `PATH`. If two modules have the same base name in different
* directories, then the latter one will be ignored. If additional
* directories are specified GIO will load modules from the built-in
* directory last.
* Create a new scope for loading of IO modules. A scope can be used for
* blocking duplicate modules, or blocking a module you don't want to load.
*
- * Specify the %G_IO_MODULES_SCOPE_BLOCK_DUPLICATES flag to block modules
+ * Specify the %G_IO_MODULE_SCOPE_BLOCK_DUPLICATES flag to block modules
* which have the same base name as a module that has already been seen
* in this scope.
*
return g_io_modules_load_all_in_directory_with_scope (dirname, NULL);
}
-GRecMutex default_modules_lock;
-GHashTable *default_modules;
+static gpointer
+try_class (GIOExtension *extension,
+ guint is_supported_offset)
+{
+ GType type = g_io_extension_get_type (extension);
+ typedef gboolean (*verify_func) (void);
+ gpointer class;
+
+ class = g_type_class_ref (type);
+ if (!is_supported_offset || (* G_STRUCT_MEMBER(verify_func, class, is_supported_offset)) ())
+ return class;
+
+ g_type_class_unref (class);
+ return NULL;
+}
+
+/**
+ * _g_io_module_get_default_type:
+ * @extension_point: the name of an extension point
+ * @envvar: (allow-none): the name of an environment variable to
+ * override the default implementation.
+ * @is_supported_offset: a vtable offset, or zero
+ *
+ * Retrieves the default class implementing @extension_point.
+ *
+ * If @envvar is not %NULL, and the environment variable with that
+ * name is set, then the implementation it specifies will be tried
+ * first. After that, or if @envvar is not set, all other
+ * implementations will be tried in order of decreasing priority.
+ *
+ * If @is_supported_offset is non-zero, then it is the offset into the
+ * class vtable at which there is a function that takes no arguments and
+ * returns a boolean. This function will be called on each candidate
+ * implementation to check if it is actually usable or not.
+ *
+ * The result is cached after it is generated the first time, and
+ * the function is thread-safe.
+ *
+ * Returns: (transfer none): an object implementing
+ * @extension_point, or %NULL if there are no usable
+ * implementations.
+ */
+GType
+_g_io_module_get_default_type (const gchar *extension_point,
+ const gchar *envvar,
+ guint is_supported_offset)
+{
+ static GRecMutex default_modules_lock;
+ static GHashTable *default_modules;
+ const char *use_this;
+ GList *l;
+ GIOExtensionPoint *ep;
+ GIOExtension *extension, *preferred;
+ gpointer impl;
+
+ g_rec_mutex_lock (&default_modules_lock);
+ if (default_modules)
+ {
+ gpointer key;
+
+ if (g_hash_table_lookup_extended (default_modules, extension_point, &key, &impl))
+ {
+ g_rec_mutex_unlock (&default_modules_lock);
+ return impl ? G_OBJECT_CLASS_TYPE (impl) : G_TYPE_INVALID;
+ }
+ }
+ else
+ {
+ default_modules = g_hash_table_new (g_str_hash, g_str_equal);
+ }
+
+ _g_io_modules_ensure_loaded ();
+ ep = g_io_extension_point_lookup (extension_point);
+
+ if (!ep)
+ {
+ g_warn_if_reached ();
+ g_rec_mutex_unlock (&default_modules_lock);
+ return G_TYPE_INVALID;
+ }
+
+ use_this = envvar ? g_getenv (envvar) : NULL;
+ if (use_this)
+ {
+ preferred = g_io_extension_point_get_extension_by_name (ep, use_this);
+ if (preferred)
+ {
+ impl = try_class (preferred, is_supported_offset);
+ if (impl)
+ goto done;
+ }
+ else
+ g_warning ("Can't find module '%s' specified in %s", use_this, envvar);
+ }
+ else
+ preferred = NULL;
+
+ for (l = g_io_extension_point_get_extensions (ep); l != NULL; l = l->next)
+ {
+ extension = l->data;
+ if (extension == preferred)
+ continue;
+
+ impl = try_class (extension, is_supported_offset);
+ if (impl)
+ goto done;
+ }
+
+ impl = NULL;
+
+ done:
+ g_hash_table_insert (default_modules, g_strdup (extension_point), impl);
+ g_rec_mutex_unlock (&default_modules_lock);
+
+ return impl ? G_OBJECT_CLASS_TYPE (impl) : G_TYPE_INVALID;
+}
static gpointer
try_implementation (GIOExtension *extension,
* The result is cached after it is generated the first time, and
* the function is thread-safe.
*
- * Return value: (transfer none): an object implementing
+ * Returns: (transfer none): an object implementing
* @extension_point, or %NULL if there are no usable
* implementations.
*/
const gchar *envvar,
GIOModuleVerifyFunc verify_func)
{
+ static GRecMutex default_modules_lock;
+ static GHashTable *default_modules;
const char *use_this;
GList *l;
GIOExtensionPoint *ep;
extern GType _g_fen_file_monitor_get_type (void);
extern GType _g_inotify_directory_monitor_get_type (void);
extern GType _g_inotify_file_monitor_get_type (void);
+extern GType _g_kqueue_directory_monitor_get_type (void);
+extern GType _g_kqueue_file_monitor_get_type (void);
extern GType _g_unix_volume_monitor_get_type (void);
extern GType _g_local_vfs_get_type (void);
extern GType _g_dummy_proxy_resolver_get_type (void);
extern GType _g_dummy_tls_backend_get_type (void);
+extern GType g_network_monitor_base_get_type (void);
+#ifdef HAVE_NETLINK
+extern GType _g_network_monitor_netlink_get_type (void);
+#endif
+
+#ifdef G_OS_UNIX
+extern GType g_fdo_notification_backend_get_type (void);
+extern GType g_gtk_notification_backend_get_type (void);
+#endif
#ifdef G_PLATFORM_WIN32
#ifdef DLL_EXPORT
+BOOL WINAPI DllMain (HINSTANCE hinstDLL,
+ DWORD fdwReason,
+ LPVOID lpvReserved);
+
BOOL WINAPI
DllMain (HINSTANCE hinstDLL,
DWORD fdwReason,
#endif
+void *
+_g_io_win32_get_module (void)
+{
+ if (!gio_dll)
+ GetModuleHandleExA (GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS,
+ (const char *) _g_io_win32_get_module,
+ &gio_dll);
+ return gio_dll;
+}
+
#undef GIO_MODULE_DIR
/* GIO_MODULE_DIR is used only in code called just once,
#ifdef G_OS_UNIX
#if !GLIB_CHECK_VERSION (3, 0, 0)
ep = g_io_extension_point_register (G_DESKTOP_APP_INFO_LOOKUP_EXTENSION_POINT_NAME);
+ G_GNUC_BEGIN_IGNORE_DEPRECATIONS
g_io_extension_point_set_required_type (ep, G_TYPE_DESKTOP_APP_INFO_LOOKUP);
+ G_GNUC_END_IGNORE_DEPRECATIONS
#endif
#endif
ep = g_io_extension_point_register (G_LOCAL_FILE_MONITOR_EXTENSION_POINT_NAME);
g_io_extension_point_set_required_type (ep, G_TYPE_LOCAL_FILE_MONITOR);
+ ep = g_io_extension_point_register (G_NFS_DIRECTORY_MONITOR_EXTENSION_POINT_NAME);
+ g_io_extension_point_set_required_type (ep, G_TYPE_LOCAL_DIRECTORY_MONITOR);
+
+ ep = g_io_extension_point_register (G_NFS_FILE_MONITOR_EXTENSION_POINT_NAME);
+ g_io_extension_point_set_required_type (ep, G_TYPE_LOCAL_FILE_MONITOR);
+
ep = g_io_extension_point_register (G_VOLUME_MONITOR_EXTENSION_POINT_NAME);
g_io_extension_point_set_required_type (ep, G_TYPE_VOLUME_MONITOR);
ep = g_io_extension_point_register (G_TLS_BACKEND_EXTENSION_POINT_NAME);
g_io_extension_point_set_required_type (ep, G_TYPE_TLS_BACKEND);
+
+ ep = g_io_extension_point_register (G_NETWORK_MONITOR_EXTENSION_POINT_NAME);
+ g_io_extension_point_set_required_type (ep, G_TYPE_NETWORK_MONITOR);
+
+ ep = g_io_extension_point_register (G_NOTIFICATION_BACKEND_EXTENSION_POINT_NAME);
+ g_io_extension_point_set_required_type (ep, G_TYPE_NOTIFICATION_BACKEND);
}
G_UNLOCK (registered_extensions);
- }
+}
void
_g_io_modules_ensure_loaded (void)
static gboolean loaded_dirs = FALSE;
const char *module_path;
GIOModuleScope *scope;
+ const gchar *module_dir;
_g_io_modules_ensure_extension_points_registered ();
}
/* Then load the compiled in path */
- g_io_modules_scan_all_in_directory_with_scope (GIO_MODULE_DIR, scope);
+ module_dir = g_getenv ("GIO_MODULE_DIR");
+ if (module_dir == NULL)
+ module_dir = GIO_MODULE_DIR;
+
+ g_io_modules_scan_all_in_directory_with_scope (module_dir, scope);
g_io_module_scope_free (scope);
/* Initialize types from built-in "modules" */
- g_null_settings_backend_get_type ();
- g_memory_settings_backend_get_type ();
-#if defined(HAVE_SYS_INOTIFY_H) || defined(HAVE_LINUX_INOTIFY_H)
- _g_inotify_directory_monitor_get_type ();
- _g_inotify_file_monitor_get_type ();
+ g_type_ensure (g_null_settings_backend_get_type ());
+ g_type_ensure (g_memory_settings_backend_get_type ());
+#if defined(HAVE_INOTIFY_INIT1)
+ g_type_ensure (_g_inotify_directory_monitor_get_type ());
+ g_type_ensure (_g_inotify_file_monitor_get_type ());
+#endif
+#if defined(HAVE_KQUEUE)
+ g_type_ensure (_g_kqueue_directory_monitor_get_type ());
+ g_type_ensure (_g_kqueue_file_monitor_get_type ());
#endif
#if defined(HAVE_FEN)
- _g_fen_directory_monitor_get_type ();
- _g_fen_file_monitor_get_type ();
+ g_type_ensure (_g_fen_directory_monitor_get_type ());
+ g_type_ensure (_g_fen_file_monitor_get_type ());
#endif
#ifdef G_OS_WIN32
- _g_win32_volume_monitor_get_type ();
- g_win32_directory_monitor_get_type ();
- g_registry_backend_get_type ();
+ g_type_ensure (_g_win32_volume_monitor_get_type ());
+ g_type_ensure (g_win32_directory_monitor_get_type ());
+ g_type_ensure (g_registry_backend_get_type ());
+#endif
+#ifdef HAVE_COCOA
+ g_nextstep_settings_backend_get_type ();
#endif
#ifdef G_OS_UNIX
- _g_unix_volume_monitor_get_type ();
+ g_type_ensure (_g_unix_volume_monitor_get_type ());
+ g_type_ensure (g_fdo_notification_backend_get_type ());
+ g_type_ensure (g_gtk_notification_backend_get_type ());
#endif
#ifdef G_OS_WIN32
- _g_winhttp_vfs_get_type ();
+ g_type_ensure (_g_winhttp_vfs_get_type ());
+#endif
+ g_type_ensure (_g_local_vfs_get_type ());
+ g_type_ensure (_g_dummy_proxy_resolver_get_type ());
+ g_type_ensure (_g_socks4a_proxy_get_type ());
+ g_type_ensure (_g_socks4_proxy_get_type ());
+ g_type_ensure (_g_socks5_proxy_get_type ());
+ g_type_ensure (_g_dummy_tls_backend_get_type ());
+ g_type_ensure (g_network_monitor_base_get_type ());
+#ifdef HAVE_NETLINK
+ g_type_ensure (_g_network_monitor_netlink_get_type ());
#endif
- _g_local_vfs_get_type ();
- _g_dummy_proxy_resolver_get_type ();
- _g_socks4a_proxy_get_type ();
- _g_socks4_proxy_get_type ();
- _g_socks5_proxy_get_type ();
- _g_dummy_tls_backend_get_type ();
}
G_UNLOCK (loaded_dirs);
* The list is sorted by priority, beginning with the highest priority.
*
* Returns: (element-type GIOExtension) (transfer none): a #GList of
- * #GIOExtension<!-- -->s. The list is owned by GIO and should not be
- * modified.
+ * #GIOExtensions. The list is owned by GIO and should not be
+ * modified.
*/
GList *
g_io_extension_point_get_extensions (GIOExtensionPoint *extension_point)
{
GList *l;
+ g_return_val_if_fail (name != NULL, NULL);
+
lazy_load_modules (extension_point);
for (l = extension_point->extensions; l != NULL; l = l->next)
{
projects / platform / upstream / glib.git / blobdiff