Import Upstream version 2.72.4

gmodule/gmodule.h

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+/* GMODULE - GLIB wrapper code for dynamic module loading
+ * Copyright (C) 1998 Tim Janik
+ *
+ * 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/>.
+ */
+
+/*
+ * Modified by the GLib Team and others 1997-2000.  See the AUTHORS
+ * file for a list of people on the GLib Team.  See the ChangeLog
+ * files for a list of changes.  These files are distributed with
+ * GLib at ftp://ftp.gtk.org/pub/gtk/. 
+ */
+
+#ifndef __GMODULE_H__
+#define __GMODULE_H__
+
+#include <glib.h>
+
+G_BEGIN_DECLS
+
+/* exporting and importing functions, this is special cased
+ * to feature Windows dll stubs.
+ */
+#define	G_MODULE_IMPORT		extern
+#ifdef G_PLATFORM_WIN32
+#  define	G_MODULE_EXPORT		__declspec(dllexport)
+#elif __GNUC__ >= 4
+#  define	G_MODULE_EXPORT		__attribute__((visibility("default")))
+#else /* !G_PLATFORM_WIN32 && __GNUC__ < 4 */
+#  define	G_MODULE_EXPORT
+#endif /* !G_PLATFORM_WIN32 */
+
+/**
+ * GModuleFlags:
+ * @G_MODULE_BIND_LAZY: specifies that symbols are only resolved when
+ *     needed. The default action is to bind all symbols when the module
+ *     is loaded.
+ * @G_MODULE_BIND_LOCAL: specifies that symbols in the module should
+ *     not be added to the global name space. The default action on most
+ *     platforms is to place symbols in the module in the global name space,
+ *     which may cause conflicts with existing symbols.
+ * @G_MODULE_BIND_MASK: mask for all flags.
+ *
+ * Flags passed to g_module_open().
+ * Note that these flags are not supported on all platforms.
+ */
+typedef enum
+{
+  G_MODULE_BIND_LAZY	= 1 << 0,
+  G_MODULE_BIND_LOCAL	= 1 << 1,
+  G_MODULE_BIND_MASK	= 0x03
+} GModuleFlags;
+
+typedef	struct _GModule			 GModule;
+typedef const gchar* (*GModuleCheckInit) (GModule	*module);
+typedef void	     (*GModuleUnload)	 (GModule	*module);
+
+#define G_MODULE_ERROR g_module_error_quark () GLIB_AVAILABLE_MACRO_IN_2_70
+GLIB_AVAILABLE_IN_2_70
+GQuark g_module_error_quark (void);
+
+/**
+ * GModuleError:
+ * @G_MODULE_ERROR_FAILED: there was an error loading or opening a module file
+ * @G_MODULE_ERROR_CHECK_FAILED: a module returned an error from its `g_module_check_init()` function
+ *
+ * Errors returned by g_module_open_full().
+ *
+ * Since: 2.70
+ */
+typedef enum
+{
+  G_MODULE_ERROR_FAILED,
+  G_MODULE_ERROR_CHECK_FAILED,
+} GModuleError
+GLIB_AVAILABLE_ENUMERATOR_IN_2_70;
+
+/* return TRUE if dynamic module loading is supported */
+GLIB_AVAILABLE_IN_ALL
+gboolean	g_module_supported	   (void) G_GNUC_CONST;
+
+/* open a module 'file_name' and return handle, which is NULL on error */
+GLIB_AVAILABLE_IN_ALL
+GModule*              g_module_open          (const gchar  *file_name,
+					      GModuleFlags  flags);
+
+GLIB_AVAILABLE_IN_2_70
+GModule              *g_module_open_full     (const gchar   *file_name,
+                                              GModuleFlags   flags,
+                                              GError       **error);
+
+/* close a previously opened module, returns TRUE on success */
+GLIB_AVAILABLE_IN_ALL
+gboolean              g_module_close         (GModule      *module);
+
+/* make a module resident so g_module_close on it will be ignored */
+GLIB_AVAILABLE_IN_ALL
+void                  g_module_make_resident (GModule      *module);
+
+/* query the last module error as a string */
+GLIB_AVAILABLE_IN_ALL
+const gchar *         g_module_error         (void);
+
+/* retrieve a symbol pointer from 'module', returns TRUE on success */
+GLIB_AVAILABLE_IN_ALL
+gboolean              g_module_symbol        (GModule      *module,
+					      const gchar  *symbol_name,
+					      gpointer     *symbol);
+
+/* retrieve the file name from an existing module */
+GLIB_AVAILABLE_IN_ALL
+const gchar *         g_module_name          (GModule      *module);
+
+/* Build the actual file name containing a module. 'directory' is the
+ * directory where the module file is supposed to be, or NULL or empty
+ * in which case it should either be in the current directory or, on
+ * some operating systems, in some standard place, for instance on the
+ * PATH. Hence, to be absolutely sure to get the correct module,
+ * always pass in a directory. The file name consists of the directory,
+ * if supplied, and 'module_name' suitably decorated according to
+ * the operating system's conventions (for instance lib*.so or *.dll).
+ *
+ * No checks are made that the file exists, or is of correct type.
+ */
+GLIB_AVAILABLE_IN_ALL
+gchar*                g_module_build_path    (const gchar  *directory,
+					      const gchar  *module_name);
+
+G_END_DECLS
+
+#endif /* __GMODULE_H__ */