diff options
Diffstat (limited to 'c/src/exec/score/src/threadqdequeuepriority.c')
-rw-r--r-- | c/src/exec/score/src/threadqdequeuepriority.c | 125 |
1 files changed, 0 insertions, 125 deletions
diff --git a/c/src/exec/score/src/threadqdequeuepriority.c b/c/src/exec/score/src/threadqdequeuepriority.c deleted file mode 100644 index 0ca29eeabf..0000000000 --- a/c/src/exec/score/src/threadqdequeuepriority.c +++ /dev/null @@ -1,125 +0,0 @@ -/* - * Thread Queue Handler - * - * - * COPYRIGHT (c) 1989-1999. - * On-Line Applications Research Corporation (OAR). - * - * 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_Dequeue_priority - * - * This routine removes a thread from the specified PRIORITY based - * threadq, unblocks it, and cancels its timeout timer. - * - * Input parameters: - * the_thread_queue - pointer to thread queue - * - * Output parameters: - * returns - thread dequeued or NULL - * - * INTERRUPT LATENCY: - * only case - */ - -Thread_Control *_Thread_queue_Dequeue_priority( - Thread_queue_Control *the_thread_queue -) -{ - unsigned32 index; - ISR_Level level; - Thread_Control *the_thread = NULL; /* just to remove warnings */ - Thread_Control *new_first_thread; - Chain_Node *new_first_node; - Chain_Node *new_second_node; - Chain_Node *last_node; - Chain_Node *next_node; - Chain_Node *previous_node; - - _ISR_Disable( level ); - for( index=0 ; - index < TASK_QUEUE_DATA_NUMBER_OF_PRIORITY_HEADERS ; - index++ ) { - if ( !_Chain_Is_empty( &the_thread_queue->Queues.Priority[ index ] ) ) { - the_thread = (Thread_Control *) - the_thread_queue->Queues.Priority[ index ].first; - goto dequeue; - } - } - - switch ( the_thread_queue->sync_state ) { - case THREAD_QUEUE_SYNCHRONIZED: - case THREAD_QUEUE_SATISFIED: - _ISR_Enable( level ); - return NULL; - - case THREAD_QUEUE_NOTHING_HAPPENED: - case THREAD_QUEUE_TIMEOUT: - the_thread_queue->sync_state = THREAD_QUEUE_SATISFIED; - _ISR_Enable( level ); - return _Thread_Executing; - } - -dequeue: - new_first_node = the_thread->Wait.Block2n.first; - new_first_thread = (Thread_Control *) new_first_node; - next_node = the_thread->Object.Node.next; - previous_node = the_thread->Object.Node.previous; - - if ( !_Chain_Is_empty( &the_thread->Wait.Block2n ) ) { - 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 - return( the_thread ); -} - |