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[/] [openrisc/] [trunk/] [rtos/] [rtems/] [c/] [src/] [exec/] [rtems/] [src/] [taskmode.c] - Blame information for rev 314

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/*
 *  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;
}

Line No.	Rev	Author	Line
1	30	unneback	`/*`
2			`* RTEMS Task Manager`
3			`*`
4			`*`
5			`* COPYRIGHT (c) 1989-1999.`
6			`* On-Line Applications Research Corporation (OAR).`
7			`*`
8			`* The license and distribution terms for this file may be`
9			`* found in the file LICENSE in this distribution or at`
10			`* http://www.OARcorp.com/rtems/license.html.`
11			`*`
12			`* $Id: taskmode.c,v 1.2 2001-09-27 11:59:19 chris Exp $`
13			`*/`
14
15			`#include <rtems/system.h>`
16			`#include <rtems/rtems/status.h>`
17			`#include <rtems/rtems/support.h>`
18			`#include <rtems/rtems/modes.h>`
19			`#include <rtems/score/object.h>`
20			`#include <rtems/score/stack.h>`
21			`#include <rtems/score/states.h>`
22			`#include <rtems/rtems/tasks.h>`
23			`#include <rtems/score/thread.h>`
24			`#include <rtems/score/threadq.h>`
25			`#include <rtems/score/tod.h>`
26			`#include <rtems/score/userext.h>`
27			`#include <rtems/score/wkspace.h>`
28			`#include <rtems/score/apiext.h>`
29			`#include <rtems/score/sysstate.h>`
30
31			`/*PAGE`
32			`*`
33			`* rtems_task_mode`
34			`*`
35			`* This directive enables and disables several modes of`
36			`* execution for the requesting thread.`
37			`*`
38			`* Input parameters:`
39			`* mode_set - new mode`
40			`* mask - mask`
41			`* previous_mode_set - address of previous mode set`
42			`*`
43			`* Output:`
44			`* *previous_mode_set - previous mode set`
45			`* always return RTEMS_SUCCESSFUL;`
46			`*/`
47
48			`rtems_status_code rtems_task_mode(`
49			`rtems_mode mode_set,`
50			`rtems_mode mask,`
51			`rtems_mode *previous_mode_set`
52			`)`
53			`{`
54			`Thread_Control *executing;`
55			`RTEMS_API_Control *api;`
56			`ASR_Information *asr;`
57			`boolean is_asr_enabled = FALSE;`
58			`boolean needs_asr_dispatching = FALSE;`
59			`rtems_mode old_mode;`
60
61			`executing = _Thread_Executing;`
62			`api = executing->API_Extensions[ THREAD_API_RTEMS ];`
63			`asr = &api->Signal;`
64
65			`old_mode = (executing->is_preemptible) ? RTEMS_PREEMPT : RTEMS_NO_PREEMPT;`
66
67			`if ( executing->budget_algorithm == THREAD_CPU_BUDGET_ALGORITHM_NONE )`
68			`old_mode \|= RTEMS_NO_TIMESLICE;`
69			`else`
70			`old_mode \|= RTEMS_TIMESLICE;`
71
72			`old_mode \|= (asr->is_enabled) ? RTEMS_ASR : RTEMS_NO_ASR;`
73			`old_mode \|= _ISR_Get_level();`
74
75			`*previous_mode_set = old_mode;`
76
77			`/*`
78			`* These are generic thread scheduling characteristics.`
79			`*/`
80
81			`if ( mask & RTEMS_PREEMPT_MASK )`
82			`executing->is_preemptible = _Modes_Is_preempt(mode_set) ? TRUE : FALSE;`
83
84			`if ( mask & RTEMS_TIMESLICE_MASK ) {`
85			`if ( _Modes_Is_timeslice(mode_set) )`
86			`executing->budget_algorithm = THREAD_CPU_BUDGET_ALGORITHM_RESET_TIMESLICE;`
87			`else`
88			`executing->budget_algorithm = THREAD_CPU_BUDGET_ALGORITHM_NONE;`
89			`}`
90
91			`/*`
92			`* Set the new interrupt level`
93			`*/`
94
95			`if ( mask & RTEMS_INTERRUPT_MASK )`
96			`_Modes_Set_interrupt_level( mode_set );`
97
98			`/*`
99			`* This is specific to the RTEMS API`
100			`*/`
101
102			`is_asr_enabled = FALSE;`
103			`needs_asr_dispatching = FALSE;`
104
105			`if ( mask & RTEMS_ASR_MASK ) {`
106			`is_asr_enabled = _Modes_Is_asr_disabled( mode_set ) ? FALSE : TRUE;`
107			`if ( is_asr_enabled != asr->is_enabled ) {`
108			`asr->is_enabled = is_asr_enabled;`
109			`_ASR_Swap_signals( asr );`
110			`if ( _ASR_Are_signals_pending( asr ) ) {`
111			`needs_asr_dispatching = TRUE;`
112			`executing->do_post_task_switch_extension = TRUE;`
113			`}`
114			`}`
115			`}`
116
117			`if ( _Thread_Evaluate_mode() \|\| needs_asr_dispatching )`
118			`_Thread_Dispatch();`
119
120			`return RTEMS_SUCCESSFUL;`
121			`}`

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[/] [openrisc/] [trunk/] [rtos/] [rtems/] [c/] [src/] [exec/] [rtems/] [src/] [taskmode.c] - Blame information for rev 314