Added rtems_message_queue_get_number_pending directive.

c/src/exec/rtems/headers/message.h

@@ -241,6 +241,23 @@ rtems_status_code rtems_message_queue_flush(
   unsigned32 *count
 );
 
+/*
+ *  rtems_message_queue_get_number_pending
+ *
+ *  DESCRIPTION:
+ *
+ *  This routine implements the rtems_message_queue_get_number_pending
+ *  directive.  This directive returns the number of pending 
+ *  messages for the message queue indicated by ID 
+ *  chain.  The number of messages pending is returned in COUNT.
+ */
+
+rtems_status_code rtems_message_queue_get_number_pending(
+  Objects_Id  id,
+  unsigned32 *count
+);
+
+
 /*
  *  _Message_queue_Submit
  *

c/src/exec/rtems/headers/msgmp.h

@@ -46,7 +46,9 @@ typedef enum {
   MESSAGE_QUEUE_MP_BROADCAST_REQUEST           =  9,
   MESSAGE_QUEUE_MP_BROADCAST_RESPONSE          = 10,
   MESSAGE_QUEUE_MP_FLUSH_REQUEST               = 11,
-  MESSAGE_QUEUE_MP_FLUSH_RESPONSE      = 12
+  MESSAGE_QUEUE_MP_FLUSH_RESPONSE              = 12,
+  MESSAGE_QUEUE_MP_GET_NUMBER_PENDING_REQUEST  = 13,
+  MESSAGE_QUEUE_MP_GET_NUMBER_PENDING_RESPONSE = 14
 }   Message_queue_MP_Remote_operations;
 
 /*

c/src/exec/rtems/include/rtems/rtems/message.h

@@ -241,6 +241,23 @@ rtems_status_code rtems_message_queue_flush(
   unsigned32 *count
 );
 
+/*
+ *  rtems_message_queue_get_number_pending
+ *
+ *  DESCRIPTION:
+ *
+ *  This routine implements the rtems_message_queue_get_number_pending
+ *  directive.  This directive returns the number of pending 
+ *  messages for the message queue indicated by ID 
+ *  chain.  The number of messages pending is returned in COUNT.
+ */
+
+rtems_status_code rtems_message_queue_get_number_pending(
+  Objects_Id  id,
+  unsigned32 *count
+);
+
+
 /*
  *  _Message_queue_Submit
  *

c/src/exec/rtems/include/rtems/rtems/msgmp.h

@@ -46,7 +46,9 @@ typedef enum {
   MESSAGE_QUEUE_MP_BROADCAST_REQUEST           =  9,
   MESSAGE_QUEUE_MP_BROADCAST_RESPONSE          = 10,
   MESSAGE_QUEUE_MP_FLUSH_REQUEST               = 11,
-  MESSAGE_QUEUE_MP_FLUSH_RESPONSE      = 12
+  MESSAGE_QUEUE_MP_FLUSH_RESPONSE              = 12,
+  MESSAGE_QUEUE_MP_GET_NUMBER_PENDING_REQUEST  = 13,
+  MESSAGE_QUEUE_MP_GET_NUMBER_PENDING_RESPONSE = 14
 }   Message_queue_MP_Remote_operations;
 
 /*

c/src/exec/rtems/src/msg.c

@@ -549,6 +549,56 @@ rtems_status_code rtems_message_queue_flush(
   return RTEMS_INTERNAL_ERROR;   /* unreached - only to remove warnings */
 }
 
+/*PAGE
+ *
+ *  rtems_message_queue_get_number_pending
+ *
+ *  This directive returns the number of messages pending.
+ *
+ *  Input parameters:
+ *    id    - queue id
+ *    count - return area for count
+ *
+ *  Output parameters:
+ *    count             - number of messages removed ( 0 = empty queue )
+ *    RTEMS_SUCCESSFUL - if successful
+ *    error code        - if unsuccessful
+ */
+
+rtems_status_code rtems_message_queue_get_number_pending(
+  Objects_Id  id,
+  unsigned32 *count
+)
+{
+  register Message_queue_Control *the_message_queue;
+  Objects_Locations               location;
+
+  the_message_queue = _Message_queue_Get( id, &location );
+  switch ( location ) {
+    case OBJECTS_ERROR:
+      return RTEMS_INVALID_ID;
+    case OBJECTS_REMOTE:
+      _Thread_Executing->Wait.return_argument = count;
+
+      return
+        _Message_queue_MP_Send_request_packet(
+          MESSAGE_QUEUE_MP_GET_NUMBER_PENDING_REQUEST,
+          id,
+          0,                               /* buffer not used */
+          0,                               /* size */
+          0,                               /* option_set not used */
+          MPCI_DEFAULT_TIMEOUT
+        );
+
+    case OBJECTS_LOCAL:
+      *count = the_message_queue->message_queue.number_of_pending_messages;
+      _Thread_Enable_dispatch();
+      return RTEMS_SUCCESSFUL;
+  }
+
+  return RTEMS_INTERNAL_ERROR;   /* unreached - only to remove warnings */
+}
+
 /*PAGE
  *
  *  _Message_queue_Submit

c/src/exec/rtems/src/msgmp.c

@@ -73,6 +73,8 @@ void _Message_queue_MP_Send_process_packet (
     case MESSAGE_QUEUE_MP_BROADCAST_RESPONSE:
     case MESSAGE_QUEUE_MP_FLUSH_REQUEST:
     case MESSAGE_QUEUE_MP_FLUSH_RESPONSE:
+    case MESSAGE_QUEUE_MP_GET_NUMBER_PENDING_REQUEST:
+    case MESSAGE_QUEUE_MP_GET_NUMBER_PENDING_RESPONSE:
       break;
 
   }
@@ -101,6 +103,7 @@ rtems_status_code _Message_queue_MP_Send_request_packet (
     case MESSAGE_QUEUE_MP_URGENT_REQUEST:
     case MESSAGE_QUEUE_MP_BROADCAST_REQUEST:
     case MESSAGE_QUEUE_MP_FLUSH_REQUEST:
+    case MESSAGE_QUEUE_MP_GET_NUMBER_PENDING_REQUEST:
 
       the_packet                    = _Message_queue_MP_Get_packet();
       the_packet->Prefix.the_class  = MP_PACKET_MESSAGE_QUEUE;
@@ -180,6 +183,7 @@ rtems_status_code _Message_queue_MP_Send_request_packet (
     case MESSAGE_QUEUE_MP_URGENT_RESPONSE:
     case MESSAGE_QUEUE_MP_BROADCAST_RESPONSE:
     case MESSAGE_QUEUE_MP_FLUSH_RESPONSE:
+    case MESSAGE_QUEUE_MP_GET_NUMBER_PENDING_RESPONSE:
       break;
   }
 
@@ -207,6 +211,7 @@ void _Message_queue_MP_Send_response_packet (
     case MESSAGE_QUEUE_MP_URGENT_RESPONSE:
     case MESSAGE_QUEUE_MP_BROADCAST_RESPONSE:
     case MESSAGE_QUEUE_MP_FLUSH_RESPONSE:
+    case MESSAGE_QUEUE_MP_GET_NUMBER_PENDING_RESPONSE:
 
       the_packet = ( Message_queue_MP_Packet *) the_thread->receive_packet;
 
@@ -237,6 +242,7 @@ void _Message_queue_MP_Send_response_packet (
     case MESSAGE_QUEUE_MP_URGENT_REQUEST:
     case MESSAGE_QUEUE_MP_BROADCAST_REQUEST:
     case MESSAGE_QUEUE_MP_FLUSH_REQUEST:
+    case MESSAGE_QUEUE_MP_GET_NUMBER_PENDING_REQUEST:
       break;
 
   }
@@ -382,6 +388,7 @@ void _Message_queue_MP_Process_packet (
 
     case MESSAGE_QUEUE_MP_BROADCAST_RESPONSE:
     case MESSAGE_QUEUE_MP_FLUSH_RESPONSE:
+    case MESSAGE_QUEUE_MP_GET_NUMBER_PENDING_RESPONSE:
 
       the_thread = _MPCI_Process_response( the_packet_prefix );
 
@@ -404,6 +411,20 @@ void _Message_queue_MP_Process_packet (
       );
       break;
 
+    case MESSAGE_QUEUE_MP_GET_NUMBER_PENDING_REQUEST:
+
+      the_packet->Prefix.return_code = rtems_message_queue_get_number_pending(
+        the_packet->Prefix.id,
+        &the_packet->count
+      );
+
+      _Message_queue_MP_Send_response_packet(
+        MESSAGE_QUEUE_MP_GET_NUMBER_PENDING_RESPONSE,
+        the_packet->Prefix.id,
+        _Thread_Executing
+      );
+      break;
+
   }
 }
 

cpukit/rtems/include/rtems/rtems/message.h

@@ -241,6 +241,23 @@ rtems_status_code rtems_message_queue_flush(
   unsigned32 *count
 );
 
+/*
+ *  rtems_message_queue_get_number_pending
+ *
+ *  DESCRIPTION:
+ *
+ *  This routine implements the rtems_message_queue_get_number_pending
+ *  directive.  This directive returns the number of pending 
+ *  messages for the message queue indicated by ID 
+ *  chain.  The number of messages pending is returned in COUNT.
+ */
+
+rtems_status_code rtems_message_queue_get_number_pending(
+  Objects_Id  id,
+  unsigned32 *count
+);
+
+
 /*
  *  _Message_queue_Submit
  *

cpukit/rtems/include/rtems/rtems/msgmp.h

@@ -46,7 +46,9 @@ typedef enum {
   MESSAGE_QUEUE_MP_BROADCAST_REQUEST           =  9,
   MESSAGE_QUEUE_MP_BROADCAST_RESPONSE          = 10,
   MESSAGE_QUEUE_MP_FLUSH_REQUEST               = 11,
-  MESSAGE_QUEUE_MP_FLUSH_RESPONSE      = 12
+  MESSAGE_QUEUE_MP_FLUSH_RESPONSE              = 12,
+  MESSAGE_QUEUE_MP_GET_NUMBER_PENDING_REQUEST  = 13,
+  MESSAGE_QUEUE_MP_GET_NUMBER_PENDING_RESPONSE = 14
 }   Message_queue_MP_Remote_operations;
 
 /*

cpukit/rtems/src/msg.c

@@ -549,6 +549,56 @@ rtems_status_code rtems_message_queue_flush(
   return RTEMS_INTERNAL_ERROR;   /* unreached - only to remove warnings */
 }
 
+/*PAGE
+ *
+ *  rtems_message_queue_get_number_pending
+ *
+ *  This directive returns the number of messages pending.
+ *
+ *  Input parameters:
+ *    id    - queue id
+ *    count - return area for count
+ *
+ *  Output parameters:
+ *    count             - number of messages removed ( 0 = empty queue )
+ *    RTEMS_SUCCESSFUL - if successful
+ *    error code        - if unsuccessful
+ */
+
+rtems_status_code rtems_message_queue_get_number_pending(
+  Objects_Id  id,
+  unsigned32 *count
+)
+{
+  register Message_queue_Control *the_message_queue;
+  Objects_Locations               location;
+
+  the_message_queue = _Message_queue_Get( id, &location );
+  switch ( location ) {
+    case OBJECTS_ERROR:
+      return RTEMS_INVALID_ID;
+    case OBJECTS_REMOTE:
+      _Thread_Executing->Wait.return_argument = count;
+
+      return
+        _Message_queue_MP_Send_request_packet(
+          MESSAGE_QUEUE_MP_GET_NUMBER_PENDING_REQUEST,
+          id,
+          0,                               /* buffer not used */
+          0,                               /* size */
+          0,                               /* option_set not used */
+          MPCI_DEFAULT_TIMEOUT
+        );
+
+    case OBJECTS_LOCAL:
+      *count = the_message_queue->message_queue.number_of_pending_messages;
+      _Thread_Enable_dispatch();
+      return RTEMS_SUCCESSFUL;
+  }
+
+  return RTEMS_INTERNAL_ERROR;   /* unreached - only to remove warnings */
+}
+
 /*PAGE
  *
  *  _Message_queue_Submit

cpukit/rtems/src/msgmp.c

@@ -73,6 +73,8 @@ void _Message_queue_MP_Send_process_packet (
     case MESSAGE_QUEUE_MP_BROADCAST_RESPONSE:
     case MESSAGE_QUEUE_MP_FLUSH_REQUEST:
     case MESSAGE_QUEUE_MP_FLUSH_RESPONSE:
+    case MESSAGE_QUEUE_MP_GET_NUMBER_PENDING_REQUEST:
+    case MESSAGE_QUEUE_MP_GET_NUMBER_PENDING_RESPONSE:
       break;
 
   }
@@ -101,6 +103,7 @@ rtems_status_code _Message_queue_MP_Send_request_packet (
     case MESSAGE_QUEUE_MP_URGENT_REQUEST:
     case MESSAGE_QUEUE_MP_BROADCAST_REQUEST:
     case MESSAGE_QUEUE_MP_FLUSH_REQUEST:
+    case MESSAGE_QUEUE_MP_GET_NUMBER_PENDING_REQUEST:
 
       the_packet                    = _Message_queue_MP_Get_packet();
       the_packet->Prefix.the_class  = MP_PACKET_MESSAGE_QUEUE;
@@ -180,6 +183,7 @@ rtems_status_code _Message_queue_MP_Send_request_packet (
     case MESSAGE_QUEUE_MP_URGENT_RESPONSE:
     case MESSAGE_QUEUE_MP_BROADCAST_RESPONSE:
     case MESSAGE_QUEUE_MP_FLUSH_RESPONSE:
+    case MESSAGE_QUEUE_MP_GET_NUMBER_PENDING_RESPONSE:
       break;
   }
 
@@ -207,6 +211,7 @@ void _Message_queue_MP_Send_response_packet (
     case MESSAGE_QUEUE_MP_URGENT_RESPONSE:
     case MESSAGE_QUEUE_MP_BROADCAST_RESPONSE:
     case MESSAGE_QUEUE_MP_FLUSH_RESPONSE:
+    case MESSAGE_QUEUE_MP_GET_NUMBER_PENDING_RESPONSE:
 
       the_packet = ( Message_queue_MP_Packet *) the_thread->receive_packet;
 
@@ -237,6 +242,7 @@ void _Message_queue_MP_Send_response_packet (
     case MESSAGE_QUEUE_MP_URGENT_REQUEST:
     case MESSAGE_QUEUE_MP_BROADCAST_REQUEST:
     case MESSAGE_QUEUE_MP_FLUSH_REQUEST:
+    case MESSAGE_QUEUE_MP_GET_NUMBER_PENDING_REQUEST:
       break;
 
   }
@@ -382,6 +388,7 @@ void _Message_queue_MP_Process_packet (
 
     case MESSAGE_QUEUE_MP_BROADCAST_RESPONSE:
     case MESSAGE_QUEUE_MP_FLUSH_RESPONSE:
+    case MESSAGE_QUEUE_MP_GET_NUMBER_PENDING_RESPONSE:
 
       the_thread = _MPCI_Process_response( the_packet_prefix );
 
@@ -404,6 +411,20 @@ void _Message_queue_MP_Process_packet (
       );
       break;
 
+    case MESSAGE_QUEUE_MP_GET_NUMBER_PENDING_REQUEST:
+
+      the_packet->Prefix.return_code = rtems_message_queue_get_number_pending(
+        the_packet->Prefix.id,
+        &the_packet->count
+      );
+
+      _Message_queue_MP_Send_response_packet(
+        MESSAGE_QUEUE_MP_GET_NUMBER_PENDING_RESPONSE,
+        the_packet->Prefix.id,
+        _Thread_Executing
+      );
+      break;
+
   }
 }