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/**
* @file
*
* @brief Signal MP Support
* @ingroup ClassicSignalMP
*/
/*
* COPYRIGHT (c) 1989-2008.
* On-Line Applications Research Corporation (OAR).
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.org/license/LICENSE.
*/
#if HAVE_CONFIG_H
#include "config.h"
#endif
#include <rtems/rtems/signalimpl.h>
#include <rtems/rtems/optionsimpl.h>
#include <rtems/score/statesimpl.h>
#include <rtems/score/threadimpl.h>
#include <rtems/score/threadqimpl.h>
/**
* The following enumerated type defines the list of
* remote signal operations.
*/
typedef enum {
SIGNAL_MP_SEND_REQUEST = 0,
SIGNAL_MP_SEND_RESPONSE = 1
} Signal_MP_Remote_operations;
/**
* The following data structure defines the packet used to perform
* remote signal operations.
*/
typedef struct {
rtems_packet_prefix Prefix;
Signal_MP_Remote_operations operation;
rtems_signal_set signal_set;
} Signal_MP_Packet;
RTEMS_STATIC_ASSERT(
sizeof(Signal_MP_Packet) <= MP_PACKET_MINIMUM_PACKET_SIZE,
Signal_MP_Packet
);
static Signal_MP_Packet *_Signal_MP_Get_packet( Objects_Id id )
{
if ( !_Thread_MP_Is_remote( id ) ) {
return NULL;
}
return (Signal_MP_Packet *) _MPCI_Get_packet();
}
/*
* _Signal_MP_Send_process_packet
*
* This subprogram is not needed since there are no process
* packets to be sent by this manager.
*
*/
rtems_status_code _Signal_MP_Send(
rtems_id id,
rtems_signal_set signal_set
)
{
Signal_MP_Packet *the_packet;
the_packet = _Signal_MP_Get_packet( id );
if ( the_packet == NULL ) {
return RTEMS_INVALID_ID;
}
the_packet->Prefix.the_class = MP_PACKET_SIGNAL;
the_packet->Prefix.length = sizeof( *the_packet );
the_packet->Prefix.to_convert = sizeof( *the_packet );
the_packet->operation = SIGNAL_MP_SEND_REQUEST;
the_packet->Prefix.id = id;
the_packet->signal_set = signal_set;
return (rtems_status_code) _MPCI_Send_request_packet(
_Objects_Get_node( id ),
&the_packet->Prefix,
STATES_READY,
RTEMS_TIMEOUT
);
}
static void _Signal_MP_Send_response_packet (
Signal_MP_Remote_operations operation,
Thread_Control *the_thread
)
{
Signal_MP_Packet *the_packet;
switch ( operation ) {
case SIGNAL_MP_SEND_RESPONSE:
the_packet = ( Signal_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.
*/
the_packet->operation = operation;
the_packet->Prefix.id = the_packet->Prefix.source_tid;
_MPCI_Send_response_packet(
_Objects_Get_node( the_packet->Prefix.source_tid ),
&the_packet->Prefix
);
break;
case SIGNAL_MP_SEND_REQUEST:
break;
}
}
void _Signal_MP_Process_packet (
rtems_packet_prefix *the_packet_prefix
)
{
Signal_MP_Packet *the_packet;
the_packet = (Signal_MP_Packet *) the_packet_prefix;
switch ( the_packet->operation ) {
case SIGNAL_MP_SEND_REQUEST:
the_packet->Prefix.return_code = rtems_signal_send(
the_packet->Prefix.id,
the_packet->signal_set
);
_Signal_MP_Send_response_packet(
SIGNAL_MP_SEND_RESPONSE,
_Thread_Executing
);
break;
case SIGNAL_MP_SEND_RESPONSE:
_MPCI_Process_response( the_packet_prefix );
_MPCI_Return_packet( the_packet_prefix );
break;
}
}
/*
* _Signal_MP_Send_object_was_deleted
*
* This subprogram is not needed since there are no objects
* deleted by this manager.
*
*/
/*
* _Signal_MP_Send_extract_proxy
*
* This subprogram is not needed since there are no objects
* deleted by this manager.
*
*/
/* end of file */
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