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-rw-r--r--cpukit/sapi/src/extension.c156
1 files changed, 156 insertions, 0 deletions
diff --git a/cpukit/sapi/src/extension.c b/cpukit/sapi/src/extension.c
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+++ b/cpukit/sapi/src/extension.c
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+/*
+ * Extension 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/object.h>
+#include <rtems/thread.h>
+#include <rtems/extension.h>
+
+/*PAGE
+ *
+ * _Extension_Manager_initialization
+ *
+ * This routine initializes all extension manager related data structures.
+ *
+ * Input parameters:
+ * maximum_extensions - number of extensions to initialize
+ *
+ * Output parameters: NONE
+ */
+
+void _Extension_Manager_initialization(
+ unsigned32 maximum_extensions
+)
+{
+ _Objects_Initialize_information(
+ &_Extension_Information,
+ FALSE,
+ maximum_extensions,
+ sizeof( Extension_Control )
+ );
+}
+
+/*PAGE
+ *
+ * rtems_extension_create
+ *
+ * This directive creates a extension and performs some initialization.
+ *
+ * Input parameters:
+ * name - extension name
+ * extension_table - pointer to extension set information
+ * id - pointer to extension id
+ *
+ * Output parameters:
+ * id - extension id
+ * RTEMS_SUCCESSFUL - if successful
+ * error code - if unsuccessful
+ */
+
+rtems_status_code rtems_extension_create(
+ Objects_Name name,
+ rtems_extensions_table *extension_table,
+ Objects_Id *id
+)
+{
+ Extension_Control *the_extension;
+
+ if ( !_Objects_Is_name_valid( name ) )
+ return ( RTEMS_INVALID_NAME );
+
+ _Thread_Disable_dispatch(); /* to prevent deletion */
+
+ the_extension = _Extension_Allocate();
+
+ if ( !the_extension ) {
+ _Thread_Enable_dispatch();
+ return( RTEMS_TOO_MANY );
+ }
+
+ _User_extensions_Add_set( &the_extension->Extension, extension_table );
+
+ _Objects_Open( &_Extension_Information, &the_extension->Object, name );
+
+ *id = the_extension->Object.id;
+ _Thread_Enable_dispatch();
+ return( RTEMS_SUCCESSFUL );
+}
+
+/*PAGE
+ *
+ * rtems_extension_ident
+ *
+ * This directive returns the system ID associated with
+ * the extension name.
+ *
+ * Input parameters:
+ * name - user defined message queue name
+ * id - pointer to extension id
+ *
+ * Output parameters:
+ * *id - message queue id
+ * RTEMS_SUCCESSFUL - if successful
+ * error code - if unsuccessful
+ */
+
+rtems_status_code rtems_extension_ident(
+ Objects_Name name,
+ Objects_Id *id
+)
+{
+ return _Objects_Name_to_id(
+ &_Extension_Information,
+ name,
+ RTEMS_SEARCH_LOCAL_NODE,
+ id
+ );
+}
+
+/*PAGE
+ *
+ * rtems_extension_delete
+ *
+ * This directive allows a thread to delete a extension.
+ *
+ * Input parameters:
+ * id - extension id
+ *
+ * Output parameters:
+ * RTEMS_SUCCESSFUL - if successful
+ * error code - if unsuccessful
+ */
+
+rtems_status_code rtems_extension_delete(
+ Objects_Id id
+)
+{
+ Extension_Control *the_extension;
+ Objects_Locations location;
+
+ the_extension = _Extension_Get( id, &location );
+ switch ( location ) {
+ case OBJECTS_ERROR:
+ case OBJECTS_REMOTE: /* should never return this */
+ return( RTEMS_INVALID_ID );
+ case OBJECTS_LOCAL:
+ _User_extensions_Remove_set( &the_extension->Extension );
+ _Objects_Close( &_Extension_Information, &the_extension->Object );
+ _Extension_Free( the_extension );
+ _Thread_Enable_dispatch();
+ return( RTEMS_SUCCESSFUL );
+ }
+
+ return( RTEMS_INTERNAL_ERROR ); /* unreached - only to remove warnings */
+}