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author | Joel Sherrill <joel.sherrill@OARcorp.com> | 2006-09-25 13:38:24 +0000 |
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committer | Joel Sherrill <joel.sherrill@OARcorp.com> | 2006-09-25 13:38:24 +0000 |
commit | 8042961d87b10e0bf0b0f021e24dbb8eb1979841 (patch) | |
tree | 975fa83004c5c30404880036836cdfae88e775ab /cpukit/rtems/src/barrierrelease.c | |
parent | Add name. (diff) | |
download | rtems-8042961d87b10e0bf0b0f021e24dbb8eb1979841.tar.bz2 |
2006-09-25 Joel Sherrill <joel.sherrill@oarcorp.com>
* rtems/Makefile.am, rtems/preinstall.am, rtems/include/rtems.h,
rtems/include/rtems/rtems/attr.h, rtems/include/rtems/rtems/config.h,
rtems/inline/rtems/rtems/attr.inl, rtems/macros/rtems/rtems/attr.inl:
Add Classic API Barriers.
* rtems/include/rtems/rtems/barrier.h,
rtems/include/rtems/rtems/barriermp.h,
rtems/inline/rtems/rtems/barrier.inl,
rtems/macros/rtems/rtems/barrier.inl, rtems/src/barrier.c,
rtems/src/barriercreate.c, rtems/src/barrierdelete.c,
rtems/src/barrierident.c, rtems/src/barrierrelease.c,
rtems/src/barriertranslatereturncode.c, rtems/src/barrierwait.c:
New files.
Diffstat (limited to 'cpukit/rtems/src/barrierrelease.c')
-rw-r--r-- | cpukit/rtems/src/barrierrelease.c | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/cpukit/rtems/src/barrierrelease.c b/cpukit/rtems/src/barrierrelease.c new file mode 100644 index 0000000000..0d7f7622ef --- /dev/null +++ b/cpukit/rtems/src/barrierrelease.c @@ -0,0 +1,66 @@ +/* + * Barrier Manager -- Release Tasks Waitng at a Barrier + * + * COPYRIGHT (c) 1989-2006. + * 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.com/license/LICENSE. + * + * $Id$ + */ + +#if HAVE_CONFIG_H +#include "config.h" +#endif + +#include <rtems/system.h> +#include <rtems/rtems/status.h> +#include <rtems/rtems/support.h> +#include <rtems/rtems/barrier.h> +#include <rtems/score/thread.h> +#include <rtems/score/threadq.h> + +/* + * rtems_barrier_release + * + * This directive releases all threads waiting at a barrier. + * + * Input parameters: + * id - barrier id + * released - pointer to number of threads unblocked + * + * Output parameters: + * RTEMS_SUCCESSFUL - if successful + * error code - if unsuccessful + * *released - number of threads unblocked + */ + +rtems_status_code rtems_barrier_release( + rtems_id id, + rtems_unsigned32 *released +) +{ + Barrier_Control *the_barrier; + Objects_Locations location; + + if ( !released ) + return RTEMS_INVALID_ADDRESS; + + the_barrier = _Barrier_Get( id, &location ); + switch ( location ) { + case OBJECTS_REMOTE: + case OBJECTS_ERROR: + return RTEMS_INVALID_ID; + + case OBJECTS_LOCAL: + *released = _CORE_barrier_Release( &the_barrier->Barrier, id, NULL ); + _Thread_Enable_dispatch(); + return _Barrier_Translate_core_barrier_return_code( + _Thread_Executing->Wait.return_code ); + + } + + return RTEMS_INTERNAL_ERROR; /* unreached - only to remove warnings */ +} |