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Diffstat (limited to '')
-rw-r--r-- | c/src/exec/score/src/threadsettransient.c | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/c/src/exec/score/src/threadsettransient.c b/c/src/exec/score/src/threadsettransient.c new file mode 100644 index 0000000000..5a2cf22a94 --- /dev/null +++ b/c/src/exec/score/src/threadsettransient.c @@ -0,0 +1,74 @@ +/* + * 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_transient + * + * This kernel routine places the requested thread in the transient state + * which will remove it from the ready queue, if necessary. No + * rescheduling is necessary because it is assumed that the transient + * state will be cleared before dispatching is enabled. + * + * Input parameters: + * the_thread - pointer to thread control block + * + * Output parameters: NONE + * + * INTERRUPT LATENCY: + * only case + */ + +void _Thread_Set_transient( + Thread_Control *the_thread +) +{ + ISR_Level level; + unsigned32 old_state; + Chain_Control *ready; + + ready = the_thread->ready; + _ISR_Disable( level ); + + old_state = the_thread->current_state; + the_thread->current_state = _States_Set( STATES_TRANSIENT, old_state ); + + if ( _States_Is_ready( old_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_Enable( level ); + +} |