Changeset 58cbb0c8 in mainline for uspace/srv/devman/devman.h

Timestamp:

2011-09-01T22:19:21Z (13 years ago)

Author:

Jiri Svoboda <jiri@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

aff587f

Parents:

5f6e25e

Message:

Reference counting of device and function nodes in devman.

File:

• uspace/srv/devman/devman.h (modified) (5 diffs)

uspace/srv/devman/devman.h

@@ -128 +128 @@
 /** Device node in the device tree. */
 struct dev_node {
+        /** Reference count */
+        atomic_t refcnt;
+        
         /** The global unique identifier of the device. */
         devman_handle_t handle;
@@ -156 +159 @@
 /** Function node in the device tree. */
 struct fun_node {
+        /** Reference count */
+        atomic_t refcnt;
+        
         /** The global unique identifier of the function */
         devman_handle_t handle;
@@ -239 +245 @@
 
 extern void add_driver(driver_list_t *, driver_t *);
-extern void attach_driver(dev_node_t *, driver_t *);
-extern void detach_driver(dev_node_t *);
+extern void attach_driver(dev_tree_t *, dev_node_t *, driver_t *);
+extern void detach_driver(dev_tree_t *, dev_node_t *);
 extern void add_device(driver_t *, dev_node_t *, dev_tree_t *);
 extern bool start_driver(driver_t *);
-extern int driver_dev_remove(dev_node_t *);
-extern int driver_fun_online(fun_node_t *);
-extern int driver_fun_offline(fun_node_t *);
+extern int driver_dev_remove(dev_tree_t *, dev_node_t *);
+extern int driver_fun_online(dev_tree_t *, fun_node_t *);
+extern int driver_fun_offline(dev_tree_t *, fun_node_t *);
 
 extern driver_t *find_driver(driver_list_t *, const char *);
@@ -258 +264 @@
 extern dev_node_t *create_dev_node(void);
 extern void delete_dev_node(dev_node_t *node);
+extern void dev_add_ref(dev_node_t *);
+extern void dev_del_ref(dev_node_t *);
 extern dev_node_t *find_dev_node_no_lock(dev_tree_t *tree,
     devman_handle_t handle);
@@ -267 +275 @@
 extern fun_node_t *create_fun_node(void);
 extern void delete_fun_node(fun_node_t *);
+extern void fun_add_ref(fun_node_t *);
+extern void fun_del_ref(fun_node_t *);
 extern fun_node_t *find_fun_node_no_lock(dev_tree_t *tree,
     devman_handle_t handle);
 extern fun_node_t *find_fun_node(dev_tree_t *tree, devman_handle_t handle);
 extern fun_node_t *find_fun_node_by_path(dev_tree_t *, char *);
-extern fun_node_t *find_fun_node_in_device(dev_node_t *, const char *);
+extern fun_node_t *find_fun_node_in_device(dev_tree_t *tree, dev_node_t *,
+    const char *);
 
 /* Device tree */