Changes in uspace/lib/c/generic/async.c [df956b9b:d768d4c8] in mainline

File:

• uspace/lib/c/generic/async.c (modified) (4 diffs)

uspace/lib/c/generic/async.c

@@ -2090 +2090 @@
  * @param arg   User defined argument.
  * @param flags Storage for the received flags. Can be NULL.
- * @param dst   Address of the storage for the destination address space area
- *              base address. Cannot be NULL.
+ * @param dst   Destination address space area base. Cannot be NULL.
  *
  * @return Zero on success or a negative error code from errno.h.
@@ -2219 +2218 @@
  *
  * @param callid Hash of the IPC_M_DATA_WRITE call to answer.
- * @param dst    Address of the storage for the destination address space area
- *               base address.
+ * @param dst    Destination address space area base address.
  *
  * @return Zero on success or a value from @ref errno.h on failure.
@@ -2281 +2279 @@
 bool async_data_read_receive(ipc_callid_t *callid, size_t *size)
 {
+        ipc_call_t data;
+        return async_data_read_receive_call(callid, &data, size);
+}
+
+/** Wrapper for receiving the IPC_M_DATA_READ calls using the async framework.
+ *
+ * This wrapper only makes it more comfortable to receive IPC_M_DATA_READ
+ * calls so that the user doesn't have to remember the meaning of each IPC
+ * argument.
+ *
+ * So far, this wrapper is to be used from within a connection fibril.
+ *
+ * @param callid Storage for the hash of the IPC_M_DATA_READ.
+ * @param size   Storage for the maximum size. Can be NULL.
+ *
+ * @return True on success, false on failure.
+ *
+ */
+bool async_data_read_receive_call(ipc_callid_t *callid, ipc_call_t *data,
+    size_t *size)
+{
         assert(callid);
-        
-        ipc_call_t data;
-        *callid = async_get_call(&data);
-        
-        if (IPC_GET_IMETHOD(data) != IPC_M_DATA_READ)
+        assert(data);
+        
+        *callid = async_get_call(data);
+        
+        if (IPC_GET_IMETHOD(*data) != IPC_M_DATA_READ)
                 return false;
         
         if (size)
-                *size = (size_t) IPC_GET_ARG2(data);
+                *size = (size_t) IPC_GET_ARG2(*data);
         
         return true;
@@ -2385 +2404 @@
 bool async_data_write_receive(ipc_callid_t *callid, size_t *size)
 {
+        ipc_call_t data;
+        return async_data_write_receive_call(callid, &data, size);
+}
+
+/** Wrapper for receiving the IPC_M_DATA_WRITE calls using the async framework.
+ *
+ * This wrapper only makes it more comfortable to receive IPC_M_DATA_WRITE
+ * calls so that the user doesn't have to remember the meaning of each IPC
+ * argument.
+ *
+ * So far, this wrapper is to be used from within a connection fibril.
+ *
+ * @param callid Storage for the hash of the IPC_M_DATA_WRITE.
+ * @param data   Storage for the ipc call data.
+ * @param size   Storage for the suggested size. May be NULL.
+ *
+ * @return True on success, false on failure.
+ *
+ */
+bool async_data_write_receive_call(ipc_callid_t *callid, ipc_call_t *data,
+    size_t *size)
+{
         assert(callid);
-        
-        ipc_call_t data;
-        *callid = async_get_call(&data);
-        
-        if (IPC_GET_IMETHOD(data) != IPC_M_DATA_WRITE)
+        assert(data);
+        
+        *callid = async_get_call(data);
+        
+        if (IPC_GET_IMETHOD(*data) != IPC_M_DATA_WRITE)
                 return false;
         
         if (size)
-                *size = (size_t) IPC_GET_ARG2(data);
+                *size = (size_t) IPC_GET_ARG2(*data);
         
         return true;