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Extend the mixed-dependency check to modules as well

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This helps prevent accidents with GTK_PATH.
This commit is contained in:
Matthias Clasen 2011-02-08 18:02:48 -05:00
parent bd0f159b6c
commit 64adba6e3e
3 changed files with 39 additions and 11 deletions
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27
gtk/gtkmain.c
View File

@ -628,20 +628,30 @@ setlocale_initialization (void)
}
}
static void
check_mixed_deps (void)
/* Return TRUE if module_to_check causes version conflicts.
* If module_to_check is NULL, check the main module.
*/
gboolean
_gtk_module_has_mixed_deps (GModule *module_to_check)
{
GModule *module;
gpointer func;
gboolean result;
module = g_module_open (NULL, 0);
if (!module_to_check)
module = g_module_open (NULL, 0);
else
module = module_to_check;
if (g_module_symbol (module, "gtk_widget_device_is_shadowed", &func))
{
g_error ("GTK+ 3 symbols detected. Using GTK+ 2.x and GTK+ 3 in the same process is not supported");
}
result = TRUE;
else
result = FALSE;
g_module_close (module);
if (!module_to_check)
g_module_close (module);
return result;
}
static void
@ -662,7 +672,8 @@ do_pre_parse_initialization (int *argc,
pre_initialized = TRUE;
check_mixed_deps ();
if (_gtk_module_has_mixed_deps (NULL))
g_error ("GTK+ 2.x symbols detected. Using GTK+ 2.x and GTK+ 3 in the same process is not supported");
gdk_pre_parse_libgtk_only ();
gdk_event_handler_set ((GdkEventFunc)gtk_main_do_event, NULL, NULL);

3
gtk/gtkmain.h
View File

@ -225,6 +225,9 @@ gboolean _gtk_boolean_handled_accumulator (GSignalInvocationHint *ihint,
gchar *_gtk_get_lc_ctype (void);
gboolean _gtk_module_has_mixed_deps (GModule *module);
G_END_DECLS
#endif /* __GTK_MAIN_H__ */

20
gtk/gtkmodules.c
View File

@ -237,7 +237,16 @@ find_module (const gchar *name)
}
module = g_module_open (module_name, G_MODULE_BIND_LOCAL | G_MODULE_BIND_LAZY);
g_free(module_name);
if (_gtk_module_has_mixed_deps (module))
{
g_warning ("GTK+ module %s cannot be loaded.\n"
"GTK+ 2.x symbols detected. Using GTK+ 2.x and GTK+ 3 in the same process is not supported.", module_name);
g_module_close (module);
module = NULL;
}
g_free (module_name);
return module;
}
@ -354,8 +363,13 @@ load_module (GSList *module_list,
}
}
else
g_message ("Failed to load module \"%s\": %s", name, g_module_error ());
{
const gchar *error = g_module_error ();
g_message ("Failed to load module \"%s\"%s%s",
name, error ? ": " : "", error ? error : "");
}
return module_list;
}