score: Add Status_Control for all APIs

Unify the status codes of the Classic and POSIX API to use the new enum
Status_Control.  This eliminates the Thread_Control::Wait::timeout_code
field and the timeout parameter of _Thread_queue_Enqueue_critical() and
_MPCI_Send_request_packet().  It gets rid of the status code translation
tables and instead uses simple bit operations to get the status for a
particular API.  This enables translation of status code constants at
compile time.  Add _Thread_Wait_get_status() to avoid direct access of
thread internal data structures.

1 files changed, 4 insertions, 28 deletions

diff --git a/cpukit/score/include/rtems/score/corerwlockimpl.h b/cpukit/score/include/rtems/score/corerwlockimpl.h
index 67084c136a..e80ab0ef0c 100644
--- a/cpukit/score/include/rtems/score/corerwlockimpl.h
+++ b/cpukit/score/include/rtems/score/corerwlockimpl.h
@@ -22,6 +22,7 @@
 #include <rtems/score/corerwlock.h>
 #include <rtems/score/thread.h>
 #include <rtems/score/threadqimpl.h>
+#include <rtems/score/status.h>
 #include <rtems/score/watchdog.h>
 
 #ifdef __cplusplus
@@ -36,27 +37,6 @@ extern "C" {
 #define CORE_RWLOCK_TQ_OPERATIONS &_Thread_queue_Operations_FIFO
 
 /**
- *  Core RWLock handler return statuses.
- */
-typedef enum {
-  /** This status indicates that the operation completed successfully. */
-  CORE_RWLOCK_SUCCESSFUL,
-  /** This status indicates that the thread was blocked waiting for an */
-  CORE_RWLOCK_WAS_DELETED,
-  /** This status indicates that the rwlock was not immediately available. */
-  CORE_RWLOCK_UNAVAILABLE,
-  /** This status indicates that the calling task was willing to block
-   *  but the operation was unable to complete within the time allotted
-   *  because the resource never became available.
-   */
-  CORE_RWLOCK_TIMEOUT
-}   CORE_RWLock_Status;
-
-/** This is the last status value.
- */
-#define CORE_RWLOCK_STATUS_LAST CORE_RWLOCK_TIMEOUT
-
-/**
  *  This is used to denote that a thread is blocking waiting for
  *  read-only access to the RWLock.
  */
@@ -117,11 +97,9 @@ RTEMS_INLINE_ROUTINE void _CORE_RWLock_Release(
  *  @param[in] wait is true if the calling thread is willing to wait
  *  @param[in] timeout is the number of ticks the calling thread is willing
  *         to wait if @a wait is true.
- *
- * @note Status is returned via the thread control block.
  */
 
-void _CORE_RWLock_Seize_for_reading(
+Status_Control _CORE_RWLock_Seize_for_reading(
   CORE_RWLock_Control  *the_rwlock,
   Thread_Control       *executing,
   bool                  wait,
@@ -138,10 +116,8 @@ void _CORE_RWLock_Seize_for_reading(
  *  @param[in] wait is true if the calling thread is willing to wait
  *  @param[in] timeout is the number of ticks the calling thread is willing
  *         to wait if @a wait is true.
- *
- * @note Status is returned via the thread control block.
  */
-void _CORE_RWLock_Seize_for_writing(
+Status_Control _CORE_RWLock_Seize_for_writing(
   CORE_RWLock_Control  *the_rwlock,
   Thread_Control       *executing,
   bool                  wait,
@@ -159,7 +135,7 @@ void _CORE_RWLock_Seize_for_writing(
  *
  *  @retval Status is returned to indicate successful or failure.
  */
-CORE_RWLock_Status _CORE_RWLock_Surrender(
+Status_Control _CORE_RWLock_Surrender(
   CORE_RWLock_Control  *the_rwlock,
   Thread_queue_Context *queue_context
 );