Changeset 438 for trunk/kernel/kern/rpc.h

Timestamp:

Apr 4, 2018, 2:49:02 PM (6 years ago)

Author:

alain

Message:

Fix a bug in scheduler related to RPC blocking.

File:

• trunk/kernel/kern/rpc.h (modified) (2 diffs)

trunk/kernel/kern/rpc.h

@@ -111 +111 @@
 {
         rpc_index_t         index;       /*! index of requested RPC service           */
-        volatile uint32_t   response;    /*! all responses received when 0            */
+        volatile uint32_t   responses;   /*! number of expected responses             */
     struct thread_s   * thread;      /*! local pointer on client thread           */
     uint32_t            lid;         /*! index of core running the calling thread */ 
@@ -150 +150 @@
 
 /***********************************************************************************
- * This function is the entry point for RPC handling on the server side.
- * It is executed by a core receiving an IPI, and each time the core enters,
- * or exit the kernel to handle .
- * It does nothing and return if the RPC_FIFO is empty.
- * The calling thread checks if it exist at least one non-blocked RPC thread,
- * creates a new RPC if required, and deschedule to allow the RPC thead to execute.
+ * This function is the entry point for RPC handling on the server cluster.
+ * It is executed by the core receiving the IPI sent by the client thread.
+ * - If the RPC FIFO is empty, it deschedules.
+ * - If the RPC FIFO is not empty, it checks if it exist a non-blocked RPC thread
+ *   in the cluster, creates a new one if required, and deschedule to allow
+ *   the RPC thead to execute.
  **********************************************************************************/
 void rpc_check();