Changeset 8869f7b in mainline for uspace/lib/c/generic/async.c

Timestamp:

2011-06-08T19:44:33Z (13 years ago)

Author:

Martin Decky <martin@…>

Branches:

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

Children:

4a4c8bcf

Parents:

0eff68e

Message:

async framework: add support for in-band IPC_M_CONNECT_TO_ME processing

File:

• uspace/lib/c/generic/async.c (modified) (2 diffs)

uspace/lib/c/generic/async.c

@@ -2339 +2339 @@
  * @param mgmt Exchange management style.
  *
- * @return New async session or NULL on failure.
+ * @return New async session.
+ * @return NULL on failure.
  *
  */
@@ -2377 +2378 @@
 }
 
+/** Wrapper for receiving the IPC_M_CONNECT_TO_ME calls.
+ *
+ * If the call is IPC_M_CONNECT_TO_ME then a new
+ * async session is created. However, the phone is
+ * not accepted automatically.
+ *
+ * @param mgmt   Exchange management style.
+ * @param call   Call data.
+ *
+ * @return New async session.
+ * @return NULL on failure.
+ * @return NULL if the call is not IPC_M_CONNECT_TO_ME.
+ *
+ */
+async_sess_t *async_callback_receive_start(exch_mgmt_t mgmt, ipc_call_t *call)
+{
+        int phone = (int) IPC_GET_ARG5(*call);
+        
+        if ((IPC_GET_IMETHOD(*call) != IPC_M_CONNECT_TO_ME) ||
+            (phone < 0))
+                return NULL;
+        
+        async_sess_t *sess = (async_sess_t *) malloc(sizeof(async_sess_t));
+        if (sess == NULL)
+                return NULL;
+        
+        sess->mgmt = mgmt;
+        sess->phone = phone;
+        sess->arg1 = 0;
+        sess->arg2 = 0;
+        sess->arg3 = 0;
+        
+        list_initialize(&sess->exch_list);
+        fibril_mutex_initialize(&sess->mutex);
+        atomic_set(&sess->refcnt, 0);
+        
+        return sess;
+}
+
 /** @}
  */