From dfbfa2b029057682e63555751183f497cdc790b0 Mon Sep 17 00:00:00 2001
From: Joel Sherrill <joel.sherrill@OARcorp.com>
Date: Tue, 2 Nov 1999 20:36:11 +0000
Subject: Split threadq.c into multiple files.

---
 cpukit/score/src/threadqenqueuefifo.c | 102 ++++++++++++++++++++++++++++++++++
 1 file changed, 102 insertions(+)
 create mode 100644 cpukit/score/src/threadqenqueuefifo.c

(limited to 'cpukit/score/src/threadqenqueuefifo.c')

diff --git a/cpukit/score/src/threadqenqueuefifo.c b/cpukit/score/src/threadqenqueuefifo.c
new file mode 100644
index 0000000000..6ce57bec7f
--- /dev/null
+++ b/cpukit/score/src/threadqenqueuefifo.c
@@ -0,0 +1,102 @@
+/*
+ *  Thread Queue Handler
+ *
+ *
+ *  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/score/chain.h>
+#include <rtems/score/isr.h>
+#include <rtems/score/object.h>
+#include <rtems/score/states.h>
+#include <rtems/score/thread.h>
+#include <rtems/score/threadq.h>
+#include <rtems/score/tqdata.h>
+
+/*PAGE
+ *
+ *  _Thread_queue_Enqueue_fifo
+ *
+ *  This routine blocks a thread, places it on a thread, and optionally
+ *  starts a timeout timer.
+ *
+ *  Input parameters:
+ *    the_thread_queue - pointer to threadq
+ *    the_thread       - pointer to the thread to block
+ *    timeout          - interval to wait
+ *
+ *  Output parameters: NONE
+ *
+ *  INTERRUPT LATENCY:
+ *    only case
+ */
+
+void _Thread_queue_Enqueue_fifo (
+  Thread_queue_Control *the_thread_queue,
+  Thread_Control       *the_thread,
+  Watchdog_Interval    timeout
+)
+{
+  ISR_Level            level;
+  Thread_queue_States  sync_state;
+
+  _ISR_Disable( level );
+
+  sync_state = the_thread_queue->sync_state;
+  the_thread_queue->sync_state = THREAD_QUEUE_SYNCHRONIZED;
+
+  switch ( sync_state ) {
+    case THREAD_QUEUE_SYNCHRONIZED: 
+      /*
+       *  This should never happen.  It indicates that someone did not
+       *  enter a thread queue critical section.
+       */
+      break;
+
+    case THREAD_QUEUE_NOTHING_HAPPENED: 
+      _Chain_Append_unprotected(
+        &the_thread_queue->Queues.Fifo,
+        &the_thread->Object.Node
+      );
+      _ISR_Enable( level );
+      return;
+
+    case THREAD_QUEUE_TIMEOUT: 
+      the_thread->Wait.return_code = the_thread->Wait.queue->timeout_status;
+      _ISR_Enable( level );
+      break;
+
+    case THREAD_QUEUE_SATISFIED:
+      if ( _Watchdog_Is_active( &the_thread->Timer ) ) {
+        _Watchdog_Deactivate( &the_thread->Timer );
+        _ISR_Enable( level );
+        (void) _Watchdog_Remove( &the_thread->Timer );
+      } else
+        _ISR_Enable( level );
+      break;
+  }
+
+  /*
+   *  Global objects with thread queue's should not be operated on from an
+   *  ISR.  But the sync code still must allow short timeouts to be processed
+   *  correctly.
+   */
+
+  _Thread_Unblock( the_thread );
+
+#if defined(RTEMS_MULTIPROCESSING)
+  if ( !_Objects_Is_local_id( the_thread->Object.id ) )
+    _Thread_MP_Free_proxy( the_thread );
+#endif
+
+}
+
-- 
cgit v1.2.3