summaryrefslogtreecommitdiffstats
path: root/cpukit/rtems/src/regionmp.c
diff options
context:
space:
mode:
Diffstat (limited to 'cpukit/rtems/src/regionmp.c')
-rw-r--r--cpukit/rtems/src/regionmp.c308
1 files changed, 308 insertions, 0 deletions
diff --git a/cpukit/rtems/src/regionmp.c b/cpukit/rtems/src/regionmp.c
new file mode 100644
index 0000000000..558ae1639a
--- /dev/null
+++ b/cpukit/rtems/src/regionmp.c
@@ -0,0 +1,308 @@
+/*
+ * Multiprocessing Support for the Region 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/mpci.h>
+#include <rtems/mppkt.h>
+#include <rtems/object.h>
+#include <rtems/options.h>
+#include <rtems/region.h>
+#include <rtems/thread.h>
+
+/*PAGE
+ *
+ * _Region_MP_Send_process_packet
+ *
+ */
+
+void _Region_MP_Send_process_packet (
+ Region_MP_Remote_operations operation,
+ Objects_Id region_id,
+ Objects_Name name,
+ Objects_Id proxy_id
+)
+{
+ Region_MP_Packet *the_packet;
+ unsigned32 node;
+
+ switch ( operation ) {
+
+ case REGION_MP_ANNOUNCE_CREATE:
+ case REGION_MP_ANNOUNCE_DELETE:
+ case REGION_MP_EXTRACT_PROXY:
+
+ the_packet = _Region_MP_Get_packet();
+ the_packet->Prefix.the_class = RTEMS_MP_PACKET_REGION;
+ the_packet->Prefix.length = sizeof ( Region_MP_Packet );
+ the_packet->Prefix.to_convert = sizeof ( Region_MP_Packet );
+ the_packet->operation = operation;
+ the_packet->Prefix.id = region_id;
+ the_packet->name = name;
+ the_packet->proxy_id = proxy_id;
+
+ if ( operation == REGION_MP_EXTRACT_PROXY )
+ node = rtems_get_node( region_id );
+ else
+ node = MPCI_ALL_NODES;
+
+ _MPCI_Send_process_packet( node, &the_packet->Prefix );
+ break;
+
+ case REGION_MP_GET_SEGMENT_REQUEST:
+ case REGION_MP_GET_SEGMENT_RESPONSE:
+ case REGION_MP_RETURN_SEGMENT_REQUEST:
+ case REGION_MP_RETURN_SEGMENT_RESPONSE:
+ break;
+ }
+}
+
+/*PAGE
+ *
+ * _Region_MP_Send_request_packet
+ *
+ */
+
+rtems_status_code _Region_MP_Send_request_packet (
+ Region_MP_Remote_operations operation,
+ Objects_Id region_id,
+ void *segment,
+ unsigned32 size,
+ rtems_option option_set,
+ rtems_interval timeout
+)
+{
+ Region_MP_Packet *the_packet;
+
+ switch ( operation ) {
+
+ case REGION_MP_GET_SEGMENT_REQUEST:
+ case REGION_MP_RETURN_SEGMENT_REQUEST:
+
+ the_packet = _Region_MP_Get_packet();
+ the_packet->Prefix.the_class = RTEMS_MP_PACKET_REGION;
+ the_packet->Prefix.length = sizeof ( Region_MP_Packet );
+ the_packet->Prefix.to_convert = sizeof ( Region_MP_Packet );
+ if ( ! _Options_Is_no_wait(option_set))
+ the_packet->Prefix.timeout = timeout;
+
+ the_packet->operation = operation;
+ the_packet->Prefix.id = region_id;
+ the_packet->segment = segment;
+ the_packet->size = size;
+ the_packet->option_set = option_set;
+
+ return _MPCI_Send_request_packet(
+ rtems_get_node( region_id ),
+ &the_packet->Prefix,
+ STATES_READY /* Not used */
+ );
+ break;
+
+ case REGION_MP_ANNOUNCE_CREATE:
+ case REGION_MP_ANNOUNCE_DELETE:
+ case REGION_MP_EXTRACT_PROXY:
+ case REGION_MP_GET_SEGMENT_RESPONSE:
+ case REGION_MP_RETURN_SEGMENT_RESPONSE:
+ break;
+
+ }
+ /*
+ * The following line is included to satisfy compilers which
+ * produce warnings when a function does not end with a return.
+ */
+ return RTEMS_INTERNAL_ERROR;
+}
+
+/*PAGE
+ *
+ * _Region_MP_Send_response_packet
+ *
+ */
+
+void _Region_MP_Send_response_packet (
+ Region_MP_Remote_operations operation,
+ Objects_Id region_id,
+ Thread_Control *the_thread
+)
+{
+ Region_MP_Packet *the_packet;
+
+ switch ( operation ) {
+
+ case REGION_MP_GET_SEGMENT_RESPONSE:
+ case REGION_MP_RETURN_SEGMENT_RESPONSE:
+
+ the_packet = ( Region_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(
+ rtems_get_node( the_packet->Prefix.source_tid ),
+ &the_packet->Prefix
+ );
+ break;
+
+ case REGION_MP_ANNOUNCE_CREATE:
+ case REGION_MP_ANNOUNCE_DELETE:
+ case REGION_MP_EXTRACT_PROXY:
+ case REGION_MP_GET_SEGMENT_REQUEST:
+ case REGION_MP_RETURN_SEGMENT_REQUEST:
+ break;
+
+ }
+}
+
+/*PAGE
+ *
+ *
+ * _Region_MP_Process_packet
+ *
+ */
+
+void _Region_MP_Process_packet (
+ rtems_packet_prefix *the_packet_prefix
+)
+{
+ Region_MP_Packet *the_packet;
+ Thread_Control *the_thread;
+ boolean ignored;
+
+ the_packet = (Region_MP_Packet *) the_packet_prefix;
+
+ switch ( the_packet->operation ) {
+
+ case REGION_MP_ANNOUNCE_CREATE:
+
+ ignored = _Objects_MP_Open(
+ &_Region_Information,
+ the_packet->name,
+ the_packet->Prefix.id,
+ TRUE
+ );
+
+ _MPCI_Return_packet( the_packet_prefix );
+ break;
+
+ case REGION_MP_ANNOUNCE_DELETE:
+
+ _Objects_MP_Close( &_Region_Information, the_packet->Prefix.id );
+
+ _MPCI_Return_packet( the_packet_prefix );
+ break;
+
+ case REGION_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 REGION_MP_GET_SEGMENT_REQUEST:
+
+ the_packet->Prefix.return_code = rtems_region_get_segment(
+ the_packet->Prefix.id,
+ the_packet->size,
+ the_packet->option_set,
+ the_packet->Prefix.timeout,
+ &the_packet->segment
+ );
+
+ _Region_MP_Send_response_packet(
+ REGION_MP_GET_SEGMENT_RESPONSE,
+ the_packet->Prefix.id,
+ _Thread_Executing
+ );
+ break;
+
+ case REGION_MP_GET_SEGMENT_RESPONSE:
+
+ the_thread = _MPCI_Process_response( the_packet_prefix );
+
+ *(void **)the_thread->Wait.return_argument = the_packet->segment;
+
+ _MPCI_Return_packet( the_packet_prefix );
+ break;
+
+ case REGION_MP_RETURN_SEGMENT_REQUEST:
+
+ the_packet->Prefix.return_code = rtems_region_return_segment(
+ the_packet->Prefix.id,
+ the_packet->segment
+ );
+
+ _Region_MP_Send_response_packet(
+ REGION_MP_RETURN_SEGMENT_RESPONSE,
+ the_packet->Prefix.id,
+ _Thread_Executing
+ );
+ break;
+
+ case REGION_MP_RETURN_SEGMENT_RESPONSE:
+
+ the_thread = _MPCI_Process_response( the_packet_prefix );
+
+ _MPCI_Return_packet( the_packet_prefix );
+ break;
+
+ }
+}
+
+/*PAGE
+ *
+ * _Region_MP_Send_object_was_deleted
+ *
+ * This routine is not needed by the Region since a region
+ * cannot be deleted when segments are in use.
+ *
+ */
+
+/*PAGE
+ *
+ * _Region_MP_Send_extract_proxy
+ *
+ */
+
+void _Region_MP_Send_extract_proxy (
+ Thread_Control *the_thread
+)
+{
+ _Region_MP_Send_process_packet(
+ REGION_MP_EXTRACT_PROXY,
+ the_thread->Wait.id,
+ (Objects_Name) 0,
+ the_thread->Object.id
+ );
+}
+
+/*PAGE
+ *
+ * _Region_MP_Get_packet
+ *
+ */
+
+Region_MP_Packet *_Region_MP_Get_packet ( void )
+{
+ return ( (Region_MP_Packet *) _MPCI_Get_packet() );
+}
+
+/* end of file */
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-19 13:01:10 +0000