summaryrefslogtreecommitdiffstats
path: root/cpukit/score/src/schedulerdefaulttick.c
diff options
context:
space:
mode:
Diffstat (limited to 'cpukit/score/src/schedulerdefaulttick.c')
-rw-r--r--cpukit/score/src/schedulerdefaulttick.c81
1 files changed, 0 insertions, 81 deletions
diff --git a/cpukit/score/src/schedulerdefaulttick.c b/cpukit/score/src/schedulerdefaulttick.c
deleted file mode 100644
index f4b6ba8578..0000000000
--- a/cpukit/score/src/schedulerdefaulttick.c
+++ /dev/null
@@ -1,81 +0,0 @@
-/**
- * @file
- *
- * @ingroup RTEMSScoreScheduler
- *
- * @brief This source file contains the implementation of
- * _Scheduler_default_Tick().
- */
-
-/*
- * COPYRIGHT (c) 1989-2009.
- * 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.rtems.org/license/LICENSE.
- */
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-
-#include <rtems/score/schedulerimpl.h>
-#include <rtems/score/threadimpl.h>
-#include <rtems/score/smp.h>
-#include <rtems/config.h>
-
-void _Scheduler_default_Tick(
- const Scheduler_Control *scheduler,
- Thread_Control *executing
-)
-{
- (void) scheduler;
-
- /*
- * If the thread is not preemptible or is not ready, then
- * just return.
- */
-
- if ( !executing->is_preemptible )
- return;
-
- if ( !_States_Is_ready( executing->current_state ) )
- return;
-
- /*
- * The cpu budget algorithm determines what happens next.
- */
-
- switch ( executing->budget_algorithm ) {
- case THREAD_CPU_BUDGET_ALGORITHM_NONE:
- break;
-
- case THREAD_CPU_BUDGET_ALGORITHM_RESET_TIMESLICE:
- #if defined(RTEMS_SCORE_THREAD_ENABLE_EXHAUST_TIMESLICE)
- case THREAD_CPU_BUDGET_ALGORITHM_EXHAUST_TIMESLICE:
- #endif
- if ( (int)(--executing->cpu_time_budget) <= 0 ) {
-
- /*
- * A yield performs the ready chain mechanics needed when
- * resetting a timeslice. If no other thread's are ready
- * at the priority of the currently executing thread, then the
- * executing thread's timeslice is reset. Otherwise, the
- * currently executing thread is placed at the rear of the
- * FIFO for this priority and a new heir is selected.
- */
- _Thread_Yield( executing );
- executing->cpu_time_budget =
- rtems_configuration_get_ticks_per_timeslice();
- }
- break;
-
- #if defined(RTEMS_SCORE_THREAD_ENABLE_SCHEDULER_CALLOUT)
- case THREAD_CPU_BUDGET_ALGORITHM_CALLOUT:
- if ( --executing->cpu_time_budget == 0 )
- (*executing->budget_callout)( executing );
- break;
- #endif
- }
-}