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author | Joel Sherrill <joel.sherrill@OARcorp.com> | 1999-05-17 23:15:20 +0000 |
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committer | Joel Sherrill <joel.sherrill@OARcorp.com> | 1999-05-17 23:15:20 +0000 |
commit | 842db5f391f323b49ff2fc6157f89135d4662506 (patch) | |
tree | 3a30015625c2caa01e470b72fd98874663c2485f /cpukit/rtems/src/partreturnbuffer.c | |
parent | Split Timer Manager into one routine per file. (diff) | |
download | rtems-842db5f391f323b49ff2fc6157f89135d4662506.tar.bz2 |
Split Partition Manager into one routine per file.
Diffstat (limited to 'cpukit/rtems/src/partreturnbuffer.c')
-rw-r--r-- | cpukit/rtems/src/partreturnbuffer.c | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/cpukit/rtems/src/partreturnbuffer.c b/cpukit/rtems/src/partreturnbuffer.c new file mode 100644 index 0000000000..3b68e53bff --- /dev/null +++ b/cpukit/rtems/src/partreturnbuffer.c @@ -0,0 +1,76 @@ +/* + * Partition Manager + * + * + * COPYRIGHT (c) 1989-1998. + * On-Line Applications Research Corporation (OAR). + * Copyright assigned to U.S. Government, 1994. + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.OARcorp.com/rtems/license.html. + * + * $Id$ + */ + +#include <rtems/system.h> +#include <rtems/rtems/status.h> +#include <rtems/rtems/support.h> +#include <rtems/score/address.h> +#include <rtems/score/object.h> +#include <rtems/rtems/part.h> +#include <rtems/score/thread.h> +#include <rtems/score/sysstate.h> + +/*PAGE + * + * rtems_partition_return_buffer + * + * This directive will return the given buffer to the specified + * buffer partition. + * + * Input parameters: + * id - partition id + * buffer - pointer to buffer address + * + * Output parameters: + * RTEMS_SUCCESSFUL - if successful + * error code - if unsuccessful + */ + +rtems_status_code rtems_partition_return_buffer( + Objects_Id id, + void *buffer +) +{ + register Partition_Control *the_partition; + Objects_Locations location; + + the_partition = _Partition_Get( id, &location ); + switch ( location ) { + + case OBJECTS_REMOTE: +#if defined(RTEMS_MULTIPROCESSING) + return _Partition_MP_Send_request_packet( + PARTITION_MP_RETURN_BUFFER_REQUEST, + id, + buffer + ); +#endif + + case OBJECTS_ERROR: + return RTEMS_INVALID_ID; + + case OBJECTS_LOCAL: + if ( _Partition_Is_buffer_valid( buffer, the_partition ) ) { + _Partition_Free_buffer( the_partition, buffer ); + the_partition->number_of_used_blocks -= 1; + _Thread_Enable_dispatch(); + return RTEMS_SUCCESSFUL; + } + _Thread_Enable_dispatch(); + return RTEMS_INVALID_ADDRESS; + } + + return RTEMS_INTERNAL_ERROR; /* unreached - only to remove warnings */ +} |