Changeset 455f190 in mainline

Timestamp:

2011-08-17T13:36:03Z (13 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

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

Children:

2bc13887

Parents:

26fbb7bb

Message:

Add interfaces for safe accessing foreign client data.

• Add async_get_client_data_by_hash() to get a reference to some client and pointer to its client data.
• Add async_put_client_data_by_hash() to drop a reference to some client by its client hash.

Location:

uspace/lib/c

Files:

• generic/async.c (modified) (2 diffs)
• include/async.h (modified) (1 diff)

uspace/lib/c/generic/async.c

@@ -201 +201 @@
 {
         async_client_data_destroy = dtor;
-}
-
-void *async_get_client_data(void)
-{
-        assert(fibril_connection);
-        return fibril_connection->client->data;
 }
 
@@ -626 +620 @@
                 free(client);
         }
+}
+
+void *async_get_client_data(void)
+{
+        assert(fibril_connection);
+        return fibril_connection->client->data;
+}
+
+void *async_get_client_data_by_hash(sysarg_t client_hash)
+{
+        client_t *client = async_client_get(client_hash, false);
+        if (!client)
+                return NULL;
+        if (!client->data) {
+                async_client_put(client);
+                return NULL;
+        }
+
+        return client->data;
+}
+
+void async_put_client_data_by_hash(sysarg_t client_hash)
+{
+        client_t *client = async_client_get(client_hash, false);
+
+        assert(client);
+        assert(client->data);
+
+        async_client_put(client);
 }
 

uspace/lib/c/include/async.h

@@ -186 +186 @@
 extern void async_set_client_data_destructor(async_client_data_dtor_t);
 extern void *async_get_client_data(void);
+extern void *async_get_client_data_by_hash(sysarg_t);
+extern void async_put_client_data_by_hash(sysarg_t);
 
 extern void async_set_client_connection(async_client_conn_t);