URL
https://opencores.org/ocsvn/openrisc/openrisc/trunk
Subversion Repositories openrisc
[/] [openrisc/] [trunk/] [rtos/] [rtems/] [c/] [src/] [exec/] [rtems/] [src/] [taskmode.c] - Rev 751
Go to most recent revision | Compare with Previous | Blame | View Log
/* * RTEMS Task Manager * * * 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: taskmode.c,v 1.2 2001-09-27 11:59:19 chris Exp $ */ #include <rtems/system.h> #include <rtems/rtems/status.h> #include <rtems/rtems/support.h> #include <rtems/rtems/modes.h> #include <rtems/score/object.h> #include <rtems/score/stack.h> #include <rtems/score/states.h> #include <rtems/rtems/tasks.h> #include <rtems/score/thread.h> #include <rtems/score/threadq.h> #include <rtems/score/tod.h> #include <rtems/score/userext.h> #include <rtems/score/wkspace.h> #include <rtems/score/apiext.h> #include <rtems/score/sysstate.h> /*PAGE * * rtems_task_mode * * This directive enables and disables several modes of * execution for the requesting thread. * * Input parameters: * mode_set - new mode * mask - mask * previous_mode_set - address of previous mode set * * Output: * *previous_mode_set - previous mode set * always return RTEMS_SUCCESSFUL; */ rtems_status_code rtems_task_mode( rtems_mode mode_set, rtems_mode mask, rtems_mode *previous_mode_set ) { Thread_Control *executing; RTEMS_API_Control *api; ASR_Information *asr; boolean is_asr_enabled = FALSE; boolean needs_asr_dispatching = FALSE; rtems_mode old_mode; executing = _Thread_Executing; api = executing->API_Extensions[ THREAD_API_RTEMS ]; asr = &api->Signal; old_mode = (executing->is_preemptible) ? RTEMS_PREEMPT : RTEMS_NO_PREEMPT; if ( executing->budget_algorithm == THREAD_CPU_BUDGET_ALGORITHM_NONE ) old_mode |= RTEMS_NO_TIMESLICE; else old_mode |= RTEMS_TIMESLICE; old_mode |= (asr->is_enabled) ? RTEMS_ASR : RTEMS_NO_ASR; old_mode |= _ISR_Get_level(); *previous_mode_set = old_mode; /* * These are generic thread scheduling characteristics. */ if ( mask & RTEMS_PREEMPT_MASK ) executing->is_preemptible = _Modes_Is_preempt(mode_set) ? TRUE : FALSE; if ( mask & RTEMS_TIMESLICE_MASK ) { if ( _Modes_Is_timeslice(mode_set) ) executing->budget_algorithm = THREAD_CPU_BUDGET_ALGORITHM_RESET_TIMESLICE; else executing->budget_algorithm = THREAD_CPU_BUDGET_ALGORITHM_NONE; } /* * Set the new interrupt level */ if ( mask & RTEMS_INTERRUPT_MASK ) _Modes_Set_interrupt_level( mode_set ); /* * This is specific to the RTEMS API */ is_asr_enabled = FALSE; needs_asr_dispatching = FALSE; if ( mask & RTEMS_ASR_MASK ) { is_asr_enabled = _Modes_Is_asr_disabled( mode_set ) ? FALSE : TRUE; if ( is_asr_enabled != asr->is_enabled ) { asr->is_enabled = is_asr_enabled; _ASR_Swap_signals( asr ); if ( _ASR_Are_signals_pending( asr ) ) { needs_asr_dispatching = TRUE; executing->do_post_task_switch_extension = TRUE; } } } if ( _Thread_Evaluate_mode() || needs_asr_dispatching ) _Thread_Dispatch(); return RTEMS_SUCCESSFUL; }
Go to most recent revision | Compare with Previous | Blame | View Log