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fix post class_init interface initialization logic for child types.

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Thu Oct  2 07:37:12 2003  Tim Janik  <timj@gtk.org>

        * gtype.c: fix post class_init interface initialization logic
        for child types.
This commit is contained in:
Tim Janik 2003-10-02 05:41:04 +00:00 committed by Tim Janik
parent 3e61c90b59
commit 96a7e24043
2 changed files with 78 additions and 53 deletions
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5
gobject/ChangeLog
View File

@ -1,3 +1,8 @@
Thu Oct 2 07:37:12 2003 Tim Janik <timj@gtk.org>
* gtype.c: fix post class_init interface initialization logic
for child types.
Thu Oct 2 01:16:50 2003 Owen Taylor <otaylor@redhat.com>
* gtype.[ch]: Add g_type_add/remove_interface_check(),

126
gobject/gtype.c
View File

@ -151,6 +151,10 @@ static inline void type_set_qdata_W (TypeNode *node,
gpointer data);
static IFaceHolder* type_iface_peek_holder_L (TypeNode *iface,
GType instance_type);
static gboolean type_iface_vtable_base_init_Wm (TypeNode *iface,
TypeNode *node);
static void type_iface_vtable_iface_init_Wm (TypeNode *iface,
TypeNode *node);
static gboolean type_node_is_a_L (TypeNode *node,
TypeNode *iface_node);
@ -1104,8 +1108,9 @@ type_data_unref_Wm (TypeNode *node,
}
static void
type_node_add_iface_entry_W (TypeNode *node,
GType iface_type)
type_node_add_iface_entry_W (TypeNode *node,
GType iface_type,
IFaceEntry *parent_entry)
{
IFaceEntry *entries;
guint i;
@ -1116,13 +1121,23 @@ type_node_add_iface_entry_W (TypeNode *node,
for (i = 0; i < CLASSED_NODE_N_IFACES (node); i++)
if (entries[i].iface_type == iface_type)
{
/* this can (should) only happen if our parent type already conformed
* to iface_type and node got it's own holder info. here, our
* children should already have entries with NULL vtables, so
* we're actually done.
/* this can happen in two cases:
* - our parent type already conformed to iface_type and node
* got it's own holder info. here, our children already have
* entries and NULL vtables, since this will only work for
* uninitialized classes.
* - an interface type is added to an ancestor after it was
* added to a child type.
*/
g_assert (entries[i].vtable == NULL);
return;
if (!parent_entry)
g_assert (entries[i].vtable == NULL && entries[i].init_state == UNINITIALIZED);
else
{
/* sick, interface is added to ancestor *after* child type;
* nothing todo, the entry and our children were already setup correctly
*/
}
return;
}
else if (entries[i].iface_type > iface_type)
break;
@ -1135,22 +1150,29 @@ type_node_add_iface_entry_W (TypeNode *node,
entries[i].iface_type = iface_type;
entries[i].vtable = NULL;
entries[i].init_state = UNINITIALIZED;
for (i = 0; i < node->n_children; i++)
type_node_add_iface_entry_W (lookup_type_node_I (node->children[i]), iface_type);
if (parent_entry)
{
if (node->data && node->data->class.init_state >= BASE_IFACE_INIT)
{
entries[i].init_state = INITIALIZED;
entries[i].vtable = parent_entry->vtable;
}
for (i = 0; i < node->n_children; i++)
type_node_add_iface_entry_W (lookup_type_node_I (node->children[i]), iface_type, &entries[i]);
}
}
static void
type_add_interface_W (TypeNode *node,
TypeNode *iface,
const GInterfaceInfo *info,
GTypePlugin *plugin)
type_add_interface_Wm (TypeNode *node,
TypeNode *iface,
const GInterfaceInfo *info,
GTypePlugin *plugin)
{
IFaceHolder *iholder = g_new0 (IFaceHolder, 1);
IFaceEntry *entry;
guint i;
/* we must not call any functions of GInterfaceInfo from within here, since
* we got most probably called from _within_ a type registration function
*/
g_assert (node->is_instantiatable && NODE_IS_IFACE (iface) && ((info && !plugin) || (!info && plugin)));
iholder->next = iface_node_get_holders_L (iface);
@ -1158,8 +1180,28 @@ type_add_interface_W (TypeNode *node,
iholder->instance_type = NODE_TYPE (node);
iholder->info = info ? g_memdup (info, sizeof (*info)) : NULL;
iholder->plugin = plugin;
/* create an iface entry for this type */
type_node_add_iface_entry_W (node, NODE_TYPE (iface), NULL);
type_node_add_iface_entry_W (node, NODE_TYPE (iface));
/* if the class is already (partly) initialized, we may need to base
* initalize and/or initialize the new interface.
*/
if (node->data)
{
InitState class_state = node->data->class.init_state;
if (class_state >= BASE_IFACE_INIT)
type_iface_vtable_base_init_Wm (iface, node);
if (class_state >= IFACE_INIT)
type_iface_vtable_iface_init_Wm (iface, node);
}
/* create iface entries for children of this type */
entry = type_lookup_iface_entry_L (node, iface);
for (i = 0; i < node->n_children; i++)
type_node_add_iface_entry_W (lookup_type_node_I (node->children[i]), NODE_TYPE (iface), entry);
}
static void
@ -1675,6 +1717,9 @@ type_iface_vtable_base_init_Wm (TypeNode *iface,
/* Finishes what type_iface_vtable_base_init_Wm started by
* calling the interface init function.
* this function may only be called for types with their
* own interface holder info, i.e. types for which
* g_type_add_interface*() was called and not children thereof.
*/
static void
type_iface_vtable_iface_init_Wm (TypeNode *iface,
@ -1687,6 +1732,7 @@ type_iface_vtable_iface_init_Wm (TypeNode *iface,
/* iholder->info should have been filled in by type_iface_vtable_base_init_Wm() */
g_assert (iface->data && entry && iholder && iholder->info);
g_assert (entry->init_state == IFACE_INIT); /* assert prior base_init() */
entry->init_state = INITIALIZED;
@ -1861,10 +1907,14 @@ type_class_init_Wm (TypeNode *node,
node->data->class.class_init (class, (gpointer) node->data->class.class_data);
G_WRITE_LOCK (&type_rw_lock);
node->data->class.init_state = IFACE_INIT;
/* finish initialize the interfaces through our holder info
/* finish initializing the interfaces through our holder info.
* inherited interfaces are already init_state == INITIALIZED, because
* they either got setup in the above base_init loop, or during
* class_init from within type_add_interface_Wm() for this or
* an anchestor type.
*/
i = 0;
while (TRUE)
@ -1892,26 +1942,6 @@ type_class_init_Wm (TypeNode *node,
node->data->class.init_state = INITIALIZED;
}
/* This function is called when we add a new interface to an existing type;
* depending on whether the type already has a class or not, we call
* base-init and interface-init functions. If we are called *while* the
* class is being initialized, then we need to update an array saying which
* interfaces for the class have been initialized.
*/
static void
type_iface_vtable_init_Wm (TypeNode *node,
TypeNode *iface)
{
InitState class_state =
node->data ? node->data->class.init_state : UNINITIALIZED;
if (class_state >= BASE_IFACE_INIT)
type_iface_vtable_base_init_Wm (iface, node);
if (class_state >= IFACE_INIT)
type_iface_vtable_iface_init_Wm (iface, node);
}
static void
type_data_finalize_class_ifaces_Wm (TypeNode *node)
{
@ -2295,13 +2325,7 @@ g_type_add_interface_static (GType instance_type,
TypeNode *iface = lookup_type_node_I (interface_type);
if (check_interface_info_I (iface, NODE_TYPE (node), info))
{
type_add_interface_W (node, iface, info, NULL);
/* If we have a class already, we may need to base initalize
* and/or initialize the new interface.
*/
type_iface_vtable_init_Wm (node, iface);
}
type_add_interface_Wm (node, iface, info, NULL);
}
G_WRITE_UNLOCK (&type_rw_lock);
}
@ -2326,11 +2350,7 @@ g_type_add_interface_dynamic (GType instance_type,
{
TypeNode *iface = lookup_type_node_I (interface_type);
type_add_interface_W (node, iface, NULL, plugin);
/* If we have a class already, we may need to base initalize
* and/or initialize the new interface.
*/
type_iface_vtable_init_Wm (node, iface);
type_add_interface_Wm (node, iface, NULL, plugin);
}
G_WRITE_UNLOCK (&type_rw_lock);
}