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/threadqextractpriority.c | 105 ++++++++++++++++++++++++++++++
 1 file changed, 105 insertions(+)
 create mode 100644 cpukit/score/src/threadqextractpriority.c

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

diff --git a/cpukit/score/src/threadqextractpriority.c b/cpukit/score/src/threadqextractpriority.c
new file mode 100644
index 0000000000..2b41dd97dc
--- /dev/null
+++ b/cpukit/score/src/threadqextractpriority.c
@@ -0,0 +1,105 @@
+/*
+ *  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_Extract_priority
+ *
+ *  This routine removes a specific thread from the specified threadq,
+ *  deletes any timeout, and unblocks the thread.
+ *
+ *  Input parameters:
+ *    the_thread_queue - pointer to a threadq header
+ *    the_thread       - pointer to a thread control block
+ *
+ *  Output parameters: NONE
+ *
+ *  INTERRUPT LATENCY:
+ *    EXTRACT_PRIORITY
+ */
+
+void _Thread_queue_Extract_priority(
+  Thread_queue_Control *the_thread_queue,
+  Thread_Control       *the_thread
+)
+{
+  ISR_Level              level;
+  Chain_Node     *the_node;
+  Chain_Node     *next_node;
+  Chain_Node     *previous_node;
+  Thread_Control *new_first_thread;
+  Chain_Node     *new_first_node;
+  Chain_Node     *new_second_node;
+  Chain_Node     *last_node;
+
+  the_node = (Chain_Node *) the_thread;
+  _ISR_Disable( level );
+  if ( _States_Is_waiting_on_thread_queue( the_thread->current_state ) ) {
+    next_node     = the_node->next;
+    previous_node = the_node->previous;
+
+    if ( !_Chain_Is_empty( &the_thread->Wait.Block2n ) ) {
+      new_first_node   = the_thread->Wait.Block2n.first;
+      new_first_thread = (Thread_Control *) new_first_node;
+      last_node        = the_thread->Wait.Block2n.last;
+      new_second_node  = new_first_node->next;
+
+      previous_node->next      = new_first_node;
+      next_node->previous      = new_first_node;
+      new_first_node->next     = next_node;
+      new_first_node->previous = previous_node;
+
+      if ( !_Chain_Has_only_one_node( &the_thread->Wait.Block2n ) ) {
+                                          /* > two threads on 2-n */
+        new_second_node->previous =
+                  _Chain_Head( &new_first_thread->Wait.Block2n );
+        new_first_thread->Wait.Block2n.first = new_second_node;
+
+        new_first_thread->Wait.Block2n.last = last_node;
+        last_node->next = _Chain_Tail( &new_first_thread->Wait.Block2n );
+      }
+    } else {
+      previous_node->next = next_node;
+      next_node->previous = previous_node;
+    }
+
+    if ( !_Watchdog_Is_active( &the_thread->Timer ) ) {
+      _ISR_Enable( level );
+      _Thread_Unblock( the_thread );
+    } else {
+      _Watchdog_Deactivate( &the_thread->Timer );
+      _ISR_Enable( level );
+      (void) _Watchdog_Remove( &the_thread->Timer );
+      _Thread_Unblock( the_thread );
+    }
+
+#if defined(RTEMS_MULTIPROCESSING)
+    if ( !_Objects_Is_local_id( the_thread->Object.id ) )
+      _Thread_MP_Free_proxy( the_thread );
+#endif
+  }
+  else
+    _ISR_Enable( level );
+}
+
-- 
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