From 8d5b438b9e9b410872123ff421c3b38bba3c36dd Mon Sep 17 00:00:00 2001
From: Joel Sherrill <joel.sherrill@OARcorp.com>
Date: Thu, 6 Jul 2000 19:27:03 +0000
Subject: Added _CORE_semaphore_Seize_isr_disable.

---
 cpukit/score/inline/rtems/score/coresem.inl | 56 +++++++++++++++++++++++++++++
 1 file changed, 56 insertions(+)

(limited to 'cpukit')

diff --git a/cpukit/score/inline/rtems/score/coresem.inl b/cpukit/score/inline/rtems/score/coresem.inl
index d2e0542281..ec7d7f011b 100644
--- a/cpukit/score/inline/rtems/score/coresem.inl
+++ b/cpukit/score/inline/rtems/score/coresem.inl
@@ -16,6 +16,9 @@
 #ifndef __INLINE_CORE_SEMAPHORE_inl
 #define __INLINE_CORE_SEMAPHORE_inl
 
+#include <rtems/score/thread.h>
+#include <rtems/score/threadq.h>
+
 /*PAGE
  *
  *  _CORE_semaphore_Is_priority
@@ -49,5 +52,58 @@ RTEMS_INLINE_ROUTINE unsigned32 _CORE_semaphore_Get_count(
   return the_semaphore->count;
 }
 
+/*PAGE
+ *
+ *  _CORE_semaphore_Seize_isr_disable
+ *
+ *  DESCRIPTION:
+ *
+ *  This routine attempts to receive a unit from the_semaphore.
+ *  If a unit is available or if the wait flag is FALSE, then the routine
+ *  returns.  Otherwise, the calling task is blocked until a unit becomes
+ *  available.
+ *
+ *  NOTE: There is currently no MACRO version of this routine.
+ */
+ 
+RTEMS_INLINE_ROUTINE void _CORE_semaphore_Seize_isr_disable(
+  CORE_semaphore_Control  *the_semaphore,
+  Objects_Id               id,
+  boolean                  wait,
+  Watchdog_Interval        timeout,
+  ISR_Level               *level_p
+) 
+{ 
+  Thread_Control *executing;
+  ISR_Level       level = *level_p;
+
+  /* disabled when you get here */
+  
+  executing = _Thread_Executing;
+  executing->Wait.return_code = CORE_SEMAPHORE_STATUS_SUCCESSFUL;
+  if ( the_semaphore->count != 0 ) {
+    the_semaphore->count -= 1;
+    _ISR_Enable( level );
+    return;
+  }
+
+  if ( !wait ) {
+    _ISR_Enable( level );
+    executing->Wait.return_code = CORE_SEMAPHORE_STATUS_UNSATISFIED_NOWAIT;
+    return;
+  }
+
+  _Thread_Disable_dispatch();
+  _ISR_Enable( level );
+  _Thread_queue_Enter_critical_section( &the_semaphore->Wait_queue );
+  executing->Wait.queue          = &the_semaphore->Wait_queue;
+  executing->Wait.id             = id;
+  _ISR_Enable( level );
+
+  _Thread_queue_Enqueue( &the_semaphore->Wait_queue, timeout );
+  _Thread_Enable_dispatch();
+}
+#endif
+
 #endif
 /* end of include file */
-- 
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