Changeset e89a06a in mainline for uspace/lib/c/generic/loc.c

Timestamp:

2018-07-06T22:13:20Z (6 years ago)

Author:

Jiri Svoboda <jiri@…>

Branches:

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

Children:

be0f5e4

Parents:

6419c6e

Message:

Encapsulate partitions list in volume server. (Global state is not good coding practice.)

File:

• uspace/lib/c/generic/loc.c (modified) (5 diffs)

uspace/lib/c/generic/loc.c

@@ -48 +48 @@
 static bool loc_callback_created = false;
 static loc_cat_change_cb_t cat_change_cb = NULL;
+static void *cat_change_arg = NULL;
 
 static async_sess_t *loc_supp_block_sess = NULL;
@@ -70 +71 @@
                         fibril_mutex_lock(&loc_callback_mutex);
                         loc_cat_change_cb_t cb_fun = cat_change_cb;
+                        void *cb_arg = cat_change_arg;
                         fibril_mutex_unlock(&loc_callback_mutex);
 
@@ -75 +77 @@
 
                         if (cb_fun != NULL)
-                                (*cb_fun)();
+                                (*cb_fun)(cb_arg);
 
                         break;
@@ -859 +861 @@
 }
 
-errno_t loc_register_cat_change_cb(loc_cat_change_cb_t cb_fun)
+errno_t loc_register_cat_change_cb(loc_cat_change_cb_t cb_fun, void *cb_arg)
 {
         fibril_mutex_lock(&loc_callback_mutex);
+        if (cat_change_cb != NULL) {
+                fibril_mutex_unlock(&loc_callback_mutex);
+                return EEXIST;
+        }
+
         if (loc_callback_create() != EOK) {
                 fibril_mutex_unlock(&loc_callback_mutex);
@@ -868 +875 @@
 
         cat_change_cb = cb_fun;
+        cat_change_arg = cb_arg;
         fibril_mutex_unlock(&loc_callback_mutex);