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author | Joel Sherrill <joel.sherrill@OARcorp.com> | 1999-11-02 20:36:11 +0000 |
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committer | Joel Sherrill <joel.sherrill@OARcorp.com> | 1999-11-02 20:36:11 +0000 |
commit | dfbfa2b029057682e63555751183f497cdc790b0 (patch) | |
tree | 70c9bcc0aeedf4b7c5caab6485a8ce83ab1db652 /c/src/exec/score/src/threadqfirstpriority.c | |
parent | The object memfile.o was being included in the miniIMFS even though it (diff) | |
download | rtems-dfbfa2b029057682e63555751183f497cdc790b0.tar.bz2 |
Split threadq.c into multiple files.
Diffstat (limited to 'c/src/exec/score/src/threadqfirstpriority.c')
-rw-r--r-- | c/src/exec/score/src/threadqfirstpriority.c | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/c/src/exec/score/src/threadqfirstpriority.c b/c/src/exec/score/src/threadqfirstpriority.c new file mode 100644 index 0000000000..a914e7a398 --- /dev/null +++ b/c/src/exec/score/src/threadqfirstpriority.c @@ -0,0 +1,53 @@ +/* + * 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_priority + * + * This routines returns a pointer to the first thread on the + * specified threadq. + * + * Input parameters: + * the_thread_queue - pointer to thread queue + * + * Output parameters: + * returns - first thread or NULL + */ + +Thread_Control *_Thread_queue_First_priority ( + Thread_queue_Control *the_thread_queue +) +{ + unsigned32 index; + + for( index=0 ; + index < TASK_QUEUE_DATA_NUMBER_OF_PRIORITY_HEADERS ; + index++ ) { + if ( !_Chain_Is_empty( &the_thread_queue->Queues.Priority[ index ] ) ) + return (Thread_Control *) + the_thread_queue->Queues.Priority[ index ].first; + } + return NULL; +} |