diff options
Diffstat (limited to 'c/src/exec/score/src/threadqfirstfifo.c')
-rw-r--r-- | c/src/exec/score/src/threadqfirstfifo.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/c/src/exec/score/src/threadqfirstfifo.c b/c/src/exec/score/src/threadqfirstfifo.c new file mode 100644 index 0000000000..a448ef79de --- /dev/null +++ b/c/src/exec/score/src/threadqfirstfifo.c @@ -0,0 +1,48 @@ +/* + * 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_First_fifo + * + * This routines returns a pointer to the first thread on the + * specified threadq. + * + * Input parameters: + * the_thread_queue - pointer to threadq + * + * Output parameters: + * returns - first thread or NULL + */ + +Thread_Control *_Thread_queue_First_fifo( + Thread_queue_Control *the_thread_queue +) +{ + if ( !_Chain_Is_empty( &the_thread_queue->Queues.Fifo ) ) + return (Thread_Control *) the_thread_queue->Queues.Fifo.first; + + return NULL; +} + |