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-rw-r--r--cpukit/score/src/threadsetstate.c84
1 files changed, 84 insertions, 0 deletions
diff --git a/cpukit/score/src/threadsetstate.c b/cpukit/score/src/threadsetstate.c
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+/*
+ * Thread 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 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/apiext.h>
+#include <rtems/score/context.h>
+#include <rtems/score/interr.h>
+#include <rtems/score/isr.h>
+#include <rtems/score/object.h>
+#include <rtems/score/priority.h>
+#include <rtems/score/states.h>
+#include <rtems/score/sysstate.h>
+#include <rtems/score/thread.h>
+#include <rtems/score/threadq.h>
+#include <rtems/score/userext.h>
+#include <rtems/score/wkspace.h>
+
+/*PAGE
+ *
+ * _Thread_Set_state
+ *
+ * This kernel routine sets the requested state in the THREAD. The
+ * THREAD chain is adjusted if necessary.
+ *
+ * Input parameters:
+ * the_thread - pointer to thread control block
+ * state - state to be set
+ *
+ * Output parameters: NONE
+ *
+ * INTERRUPT LATENCY:
+ * ready chain
+ * select map
+ */
+
+void _Thread_Set_state(
+ Thread_Control *the_thread,
+ States_Control state
+)
+{
+ ISR_Level level;
+ Chain_Control *ready;
+
+ ready = the_thread->ready;
+ _ISR_Disable( level );
+ if ( !_States_Is_ready( the_thread->current_state ) ) {
+ the_thread->current_state =
+ _States_Set( state, the_thread->current_state );
+ _ISR_Enable( level );
+ return;
+ }
+
+ the_thread->current_state = state;
+
+ if ( _Chain_Has_only_one_node( ready ) ) {
+
+ _Chain_Initialize_empty( ready );
+ _Priority_Remove_from_bit_map( &the_thread->Priority_map );
+
+ } else
+ _Chain_Extract_unprotected( &the_thread->Object.Node );
+
+ _ISR_Flash( level );
+
+ if ( _Thread_Is_heir( the_thread ) )
+ _Thread_Calculate_heir();
+
+ if ( _Thread_Is_executing( the_thread ) )
+ _Context_Switch_necessary = TRUE;
+
+ _ISR_Enable( level );
+}