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[/] [openrisc/] [trunk/] [rtos/] [rtems/] [c/] [src/] [exec/] [rtems/] [src/] [taskgetnote.c] - Blame information for rev 373

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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: taskgetnote.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_get_note
 *
 *  This directive obtains the note from the specified notepad
 *  of the specified thread.
 *
 *  Input parameters:
 *    id      - thread id
 *    notepad - notepad number
 *    note    - pointer to note
 *
 *  Output parameters:
 *    note              - filled in if successful
 *    RTEMS_SUCCESSFUL - if successful
 *    error code        - if unsuccessful
 */
 
rtems_status_code rtems_task_get_note(
  Objects_Id  id,
  unsigned32  notepad,
  unsigned32 *note
)
{
  register Thread_Control *the_thread;
  Objects_Locations        location;
  RTEMS_API_Control       *api;
 
  /*
   *  NOTE:  There is no check for < RTEMS_NOTEPAD_FIRST because that would
   *         be checking an unsigned number for being negative.
   */
 
  if ( notepad > RTEMS_NOTEPAD_LAST )
    return RTEMS_INVALID_NUMBER;
 
  /*
   *  Optimize the most likely case to avoid the Thread_Dispatch.
   */
 
  if ( _Objects_Are_ids_equal( id, OBJECTS_ID_OF_SELF ) ||
       _Objects_Are_ids_equal( id, _Thread_Executing->Object.id ) ) {
      api = _Thread_Executing->API_Extensions[ THREAD_API_RTEMS ];
      *note = api->Notepads[ notepad ];
      return RTEMS_SUCCESSFUL;
  }
 
  the_thread = _Thread_Get( id, &location );
  switch ( location ) {
 
    case OBJECTS_REMOTE:
#if defined(RTEMS_MULTIPROCESSING)
      _Thread_Executing->Wait.return_argument = note;
 
      return _RTEMS_tasks_MP_Send_request_packet(
        RTEMS_TASKS_MP_GET_NOTE_REQUEST,
        id,
        0,          /* Not used */
        notepad,
 
      );
#endif
 
    case OBJECTS_ERROR:
      return RTEMS_INVALID_ID;
 
    case OBJECTS_LOCAL:
      api = the_thread->API_Extensions[ THREAD_API_RTEMS ];
      *note = api->Notepads[ notepad ];
      _Thread_Enable_dispatch();
      return RTEMS_SUCCESSFUL;
  }
 
  return RTEMS_INTERNAL_ERROR;   /* unreached - only to remove warnings */
}

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: taskgetnote.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_get_note`
34			`*`
35			`* This directive obtains the note from the specified notepad`
36			`* of the specified thread.`
37			`*`
38			`* Input parameters:`
39			`* id - thread id`
40			`* notepad - notepad number`
41			`* note - pointer to note`
42			`*`
43			`* Output parameters:`
44			`* note - filled in if successful`
45			`* RTEMS_SUCCESSFUL - if successful`
46			`* error code - if unsuccessful`
47			`*/`
48
49			`rtems_status_code rtems_task_get_note(`
50			`Objects_Id id,`
51			`unsigned32 notepad,`
52			`unsigned32 *note`
53			`)`
54			`{`
55			`register Thread_Control *the_thread;`
56			`Objects_Locations location;`
57			`RTEMS_API_Control *api;`
58
59			`/*`
60			`* NOTE: There is no check for < RTEMS_NOTEPAD_FIRST because that would`
61			`* be checking an unsigned number for being negative.`
62			`*/`
63
64			`if ( notepad > RTEMS_NOTEPAD_LAST )`
65			`return RTEMS_INVALID_NUMBER;`
66
67			`/*`
68			`* Optimize the most likely case to avoid the Thread_Dispatch.`
69			`*/`
70
71			`if ( _Objects_Are_ids_equal( id, OBJECTS_ID_OF_SELF ) \|\|`
72			`_Objects_Are_ids_equal( id, _Thread_Executing->Object.id ) ) {`
73			`api = _Thread_Executing->API_Extensions[ THREAD_API_RTEMS ];`
74			`*note = api->Notepads[ notepad ];`
75			`return RTEMS_SUCCESSFUL;`
76			`}`
77
78			`the_thread = _Thread_Get( id, &location );`
79			`switch ( location ) {`
80
81			`case OBJECTS_REMOTE:`
82			`#if defined(RTEMS_MULTIPROCESSING)`
83			`_Thread_Executing->Wait.return_argument = note;`
84
85			`return _RTEMS_tasks_MP_Send_request_packet(`
86			`RTEMS_TASKS_MP_GET_NOTE_REQUEST,`
87			`id,`
88			`0, /* Not used */`
89			`notepad,`
90
91			`);`
92			`#endif`
93
94			`case OBJECTS_ERROR:`
95			`return RTEMS_INVALID_ID;`
96
97			`case OBJECTS_LOCAL:`
98			`api = the_thread->API_Extensions[ THREAD_API_RTEMS ];`
99			`*note = api->Notepads[ notepad ];`
100			`_Thread_Enable_dispatch();`
101			`return RTEMS_SUCCESSFUL;`
102			`}`
103
104			`return RTEMS_INTERNAL_ERROR; /* unreached - only to remove warnings */`
105			`}`

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[/] [openrisc/] [trunk/] [rtos/] [rtems/] [c/] [src/] [exec/] [rtems/] [src/] [taskgetnote.c] - Blame information for rev 373