/*
* Multiprocessing Support for the Message Queue Manager
*
*
* COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994.
* On-Line Applications Research Corporation (OAR).
* All rights assigned to U.S. Government, 1994.
*
* This material may be reproduced by or for the U.S. Government pursuant
* to the copyright license under the clause at DFARS 252.227-7013. This
* notice must appear in all copies of this file and its derivatives.
*
* $Id$
*/
#include <rtems/system.h>
#include <rtems/message.h>
#include <rtems/mpci.h>
#include <rtems/msgmp.h>
#include <rtems/object.h>
#include <rtems/options.h>
#include <rtems/thread.h>
#include <rtems/watchdog.h>
#include <rtems/config.h>
/*PAGE
*
* _Message_queue_MP_Send_process_packet
*
*/
void _Message_queue_MP_Send_process_packet (
Message_queue_MP_Remote_operations operation,
Objects_Id message_queue_id,
Objects_Name name,
Objects_Id proxy_id
)
{
Message_queue_MP_Packet *the_packet;
unsigned32 node;
switch ( operation ) {
case MESSAGE_QUEUE_MP_ANNOUNCE_CREATE:
case MESSAGE_QUEUE_MP_ANNOUNCE_DELETE:
case MESSAGE_QUEUE_MP_EXTRACT_PROXY:
the_packet = _Message_queue_MP_Get_packet();
the_packet->Prefix.the_class = RTEMS_MP_PACKET_MESSAGE_QUEUE;
the_packet->Prefix.length = sizeof ( Message_queue_MP_Packet );
the_packet->Prefix.to_convert = sizeof ( Message_queue_MP_Packet );
the_packet->operation = operation;
the_packet->Prefix.id = message_queue_id;
the_packet->name = name;
the_packet->proxy_id = proxy_id;
if ( operation == MESSAGE_QUEUE_MP_EXTRACT_PROXY )
node = rtems_get_node( message_queue_id );
else
node = MPCI_ALL_NODES;
_MPCI_Send_process_packet( node, &the_packet->Prefix );
break;
case MESSAGE_QUEUE_MP_RECEIVE_REQUEST:
case MESSAGE_QUEUE_MP_RECEIVE_RESPONSE:
case MESSAGE_QUEUE_MP_SEND_REQUEST:
case MESSAGE_QUEUE_MP_SEND_RESPONSE:
case MESSAGE_QUEUE_MP_URGENT_REQUEST:
case MESSAGE_QUEUE_MP_URGENT_RESPONSE:
case MESSAGE_QUEUE_MP_BROADCAST_REQUEST:
case MESSAGE_QUEUE_MP_BROADCAST_RESPONSE:
case MESSAGE_QUEUE_MP_FLUSH_REQUEST:
case MESSAGE_QUEUE_MP_FLUSH_RESPONSE:
break;
}
}
/*PAGE
*
* _Message_queue_MP_Send_request_packet
*
*/
rtems_status_code _Message_queue_MP_Send_request_packet (
Message_queue_MP_Remote_operations operation,
Objects_Id message_queue_id,
void *buffer,
unsigned32 *size_p,
rtems_option option_set,
rtems_interval timeout
)
{
Message_queue_MP_Packet *the_packet;
switch ( operation ) {
case MESSAGE_QUEUE_MP_SEND_REQUEST:
case MESSAGE_QUEUE_MP_URGENT_REQUEST:
case MESSAGE_QUEUE_MP_BROADCAST_REQUEST:
case MESSAGE_QUEUE_MP_FLUSH_REQUEST:
the_packet = _Message_queue_MP_Get_packet();
the_packet->Prefix.the_class = RTEMS_MP_PACKET_MESSAGE_QUEUE;
the_packet->Prefix.length = sizeof(Message_queue_MP_Packet);
if ( size_p )
the_packet->Prefix.length += *size_p;
the_packet->Prefix.to_convert = sizeof(Message_queue_MP_Packet);
/*
* make sure message is not too big for our MPCI driver
* We have to check it here instead of waiting for MPCI because
* we are about to slam in the payload
*/
if (the_packet->Prefix.length >
_Configuration_MPCI_table->maximum_packet_size)
{
_Thread_Enable_dispatch();
return RTEMS_INVALID_SIZE;
}
if ( ! _Options_Is_no_wait(option_set))
the_packet->Prefix.timeout = timeout;
the_packet->operation = operation;
the_packet->Prefix.id = message_queue_id;
the_packet->option_set = option_set;
/*
* Copy the data into place if needed
*/
if (buffer)
{
the_packet->Buffer.size = *size_p;
_Message_queue_Copy_buffer(buffer,
the_packet->Buffer.buffer,
*size_p);
}
return _MPCI_Send_request_packet(rtems_get_node(message_queue_id),
&the_packet->Prefix,
STATES_WAITING_FOR_MESSAGE);
break;
case MESSAGE_QUEUE_MP_RECEIVE_REQUEST:
the_packet = _Message_queue_MP_Get_packet();
the_packet->Prefix.the_class = RTEMS_MP_PACKET_MESSAGE_QUEUE;
the_packet->Prefix.length = sizeof(Message_queue_MP_Packet);
the_packet->Prefix.to_convert = sizeof(Message_queue_MP_Packet);
if ( ! _Options_Is_no_wait(option_set))
the_packet->Prefix.timeout = timeout;
the_packet->operation = MESSAGE_QUEUE_MP_RECEIVE_REQUEST;
the_packet->Prefix.id = message_queue_id;
the_packet->option_set = option_set;
the_packet->size = 0; /* just in case of an error */
_Thread_Executing->Wait.return_argument = (unsigned32 *)buffer;
_Thread_Executing->Wait.Extra.message_size_p = size_p;
return _MPCI_Send_request_packet(rtems_get_node(message_queue_id),
&the_packet->Prefix,
STATES_WAITING_FOR_MESSAGE);
break;
case MESSAGE_QUEUE_MP_ANNOUNCE_CREATE:
case MESSAGE_QUEUE_MP_ANNOUNCE_DELETE:
case MESSAGE_QUEUE_MP_EXTRACT_PROXY:
case MESSAGE_QUEUE_MP_RECEIVE_RESPONSE:
case MESSAGE_QUEUE_MP_SEND_RESPONSE:
case MESSAGE_QUEUE_MP_URGENT_RESPONSE:
case MESSAGE_QUEUE_MP_BROADCAST_RESPONSE:
case MESSAGE_QUEUE_MP_FLUSH_RESPONSE:
break;
}
return RTEMS_SUCCESSFUL;
}
/*PAGE
*
* _Message_queue_MP_Send_response_packet
*
*/
void _Message_queue_MP_Send_response_packet (
Message_queue_MP_Remote_operations operation,
Objects_Id message_queue_id,
Thread_Control *the_thread
)
{
Message_queue_MP_Packet *the_packet;
switch ( operation ) {
case MESSAGE_QUEUE_MP_RECEIVE_RESPONSE:
case MESSAGE_QUEUE_MP_SEND_RESPONSE:
case MESSAGE_QUEUE_MP_URGENT_RESPONSE:
case MESSAGE_QUEUE_MP_BROADCAST_RESPONSE:
case MESSAGE_QUEUE_MP_FLUSH_RESPONSE:
the_packet = ( Message_queue_MP_Packet *) the_thread->receive_packet;
/*
* The packet being returned already contains the class, length, and
* to_convert fields, therefore they are not set in this routine.
*
* Exception: MESSAGE_QUEUE_MP_RECEIVE_RESPONSE needs payload length
* added to 'length'
*/
the_packet->operation = operation;
the_packet->Prefix.id = the_packet->Prefix.source_tid;
if (operation == MESSAGE_QUEUE_MP_RECEIVE_RESPONSE)
the_packet->Prefix.length += the_packet->size;
_MPCI_Send_response_packet(
rtems_get_node( the_packet->Prefix.source_tid ),
&the_packet->Prefix
);
break;
case MESSAGE_QUEUE_MP_ANNOUNCE_CREATE:
case MESSAGE_QUEUE_MP_ANNOUNCE_DELETE:
case MESSAGE_QUEUE_MP_EXTRACT_PROXY:
case MESSAGE_QUEUE_MP_RECEIVE_REQUEST:
case MESSAGE_QUEUE_MP_SEND_REQUEST:
case MESSAGE_QUEUE_MP_URGENT_REQUEST:
case MESSAGE_QUEUE_MP_BROADCAST_REQUEST:
case MESSAGE_QUEUE_MP_FLUSH_REQUEST:
break;
}
}
/*PAGE
*
*
* _Message_queue_MP_Process_packet
*
*/
void _Message_queue_MP_Process_packet (
rtems_packet_prefix *the_packet_prefix
)
{
Message_queue_MP_Packet *the_packet;
Thread_Control *the_thread;
boolean ignored;
the_packet = (Message_queue_MP_Packet *) the_packet_prefix;
switch ( the_packet->operation ) {
case MESSAGE_QUEUE_MP_ANNOUNCE_CREATE:
ignored = _Objects_MP_Open(
&_Message_queue_Information,
the_packet->name,
the_packet->Prefix.id,
TRUE
);
_MPCI_Return_packet( the_packet_prefix );
break;
case MESSAGE_QUEUE_MP_ANNOUNCE_DELETE:
_Objects_MP_Close( &_Message_queue_Information, the_packet->Prefix.id );
_MPCI_Return_packet( the_packet_prefix );
break;
case MESSAGE_QUEUE_MP_EXTRACT_PROXY:
the_thread = _Thread_MP_Find_proxy( the_packet->proxy_id );
if ( ! _Thread_Is_null( the_thread ) )
_Thread_queue_Extract( the_thread->Wait.queue, the_thread );
_MPCI_Return_packet( the_packet_prefix );
break;
case MESSAGE_QUEUE_MP_RECEIVE_REQUEST:
the_packet->Prefix.return_code = rtems_message_queue_receive(
the_packet->Prefix.id,
the_packet->Buffer.buffer,
&the_packet->size,
the_packet->option_set,
the_packet->Prefix.timeout
);
if ( ! _Status_Is_proxy_blocking( the_packet->Prefix.return_code ) )
_Message_queue_MP_Send_response_packet(
MESSAGE_QUEUE_MP_RECEIVE_RESPONSE,
the_packet->Prefix.id,
_Thread_Executing
);
break;
case MESSAGE_QUEUE_MP_RECEIVE_RESPONSE:
the_thread = _MPCI_Process_response( the_packet_prefix );
if (the_packet->Prefix.return_code == RTEMS_SUCCESSFUL) {
*the_thread->Wait.Extra.message_size_p = the_packet->size;
_Message_queue_Copy_buffer(
the_packet->Buffer.buffer,
the_thread->Wait.return_argument,
the_packet->size
);
}
_MPCI_Return_packet( the_packet_prefix );
break;
case MESSAGE_QUEUE_MP_SEND_REQUEST:
the_packet->Prefix.return_code = rtems_message_queue_send(
the_packet->Prefix.id,
the_packet->Buffer.buffer,
the_packet->Buffer.size
);
_Message_queue_MP_Send_response_packet(
MESSAGE_QUEUE_MP_SEND_RESPONSE,
the_packet->Prefix.id,
_Thread_Executing
);
break;
case MESSAGE_QUEUE_MP_SEND_RESPONSE:
case MESSAGE_QUEUE_MP_URGENT_RESPONSE:
the_thread = _MPCI_Process_response( the_packet_prefix );
_MPCI_Return_packet( the_packet_prefix );
break;
case MESSAGE_QUEUE_MP_URGENT_REQUEST:
the_packet->Prefix.return_code = rtems_message_queue_urgent(
the_packet->Prefix.id,
the_packet->Buffer.buffer,
the_packet->Buffer.size
);
_Message_queue_MP_Send_response_packet(
MESSAGE_QUEUE_MP_URGENT_RESPONSE,
the_packet->Prefix.id,
_Thread_Executing
);
break;
case MESSAGE_QUEUE_MP_BROADCAST_REQUEST:
the_packet->Prefix.return_code = rtems_message_queue_broadcast(
the_packet->Prefix.id,
the_packet->Buffer.buffer,
the_packet->Buffer.size,
&the_packet->count
);
_Message_queue_MP_Send_response_packet(
MESSAGE_QUEUE_MP_BROADCAST_RESPONSE,
the_packet->Prefix.id,
_Thread_Executing
);
break;
case MESSAGE_QUEUE_MP_BROADCAST_RESPONSE:
case MESSAGE_QUEUE_MP_FLUSH_RESPONSE:
the_thread = _MPCI_Process_response( the_packet_prefix );
*(unsigned32 *)the_thread->Wait.return_argument = the_packet->count;
_MPCI_Return_packet( the_packet_prefix );
break;
case MESSAGE_QUEUE_MP_FLUSH_REQUEST:
the_packet->Prefix.return_code = rtems_message_queue_flush(
the_packet->Prefix.id,
&the_packet->count
);
_Message_queue_MP_Send_response_packet(
MESSAGE_QUEUE_MP_FLUSH_RESPONSE,
the_packet->Prefix.id,
_Thread_Executing
);
break;
}
}
/*PAGE
*
* _Message_queue_MP_Send_object_was_deleted
*
*/
void _Message_queue_MP_Send_object_was_deleted (
Thread_Control *the_proxy
)
{
the_proxy->receive_packet->return_code = RTEMS_OBJECT_WAS_DELETED;
_Message_queue_MP_Send_response_packet(
MESSAGE_QUEUE_MP_RECEIVE_RESPONSE,
the_proxy->Wait.id,
the_proxy
);
}
/*PAGE
*
* _Message_queue_MP_Send_extract_proxy
*
*/
void _Message_queue_MP_Send_extract_proxy (
Thread_Control *the_thread
)
{
_Message_queue_MP_Send_process_packet(
MESSAGE_QUEUE_MP_EXTRACT_PROXY,
the_thread->Wait.id,
(Objects_Name) 0,
the_thread->Object.id
);
}
/*PAGE
*
* _Message_queue_MP_Get_packet
*
*/
Message_queue_MP_Packet *_Message_queue_MP_Get_packet ( void )
{
return ( (Message_queue_MP_Packet *) _MPCI_Get_packet() );
}
/* end of file */
