1 | /* |
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2 | * COPYRIGHT (c) 1989-2007. |
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3 | * On-Line Applications Research Corporation (OAR). |
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4 | * |
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5 | * The license and distribution terms for this file may be |
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6 | * found in the file LICENSE in this distribution or at |
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7 | * http://www.rtems.com/license/LICENSE. |
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8 | * |
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9 | * $Id$ |
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10 | */ |
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11 | |
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12 | #if HAVE_CONFIG_H |
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13 | #include "config.h" |
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14 | #endif |
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15 | |
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16 | #include <rtems/itron.h> |
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17 | |
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18 | #include <rtems/score/thread.h> |
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19 | #include <rtems/score/userext.h> |
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20 | #include <rtems/score/wkspace.h> |
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21 | #include <rtems/score/apiext.h> |
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22 | #include <rtems/score/sysstate.h> |
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23 | |
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24 | #include <rtems/itron/task.h> |
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25 | |
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26 | /* |
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27 | * chg_pri - Change Task Priority |
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28 | */ |
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29 | |
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30 | ER chg_pri( |
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31 | ID tskid, |
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32 | PRI tskpri |
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33 | ) |
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34 | { |
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35 | register Thread_Control *the_thread; |
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36 | Objects_Locations location; |
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37 | Priority_Control new_priority; |
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38 | |
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39 | the_thread = _ITRON_Task_Get( tskid, &location ); |
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40 | switch ( location ) { |
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41 | #if defined(RTEMS_MULTIPROCESSING) |
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42 | case OBJECTS_REMOTE: |
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43 | #endif |
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44 | case OBJECTS_ERROR: |
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45 | return _ITRON_Task_Clarify_get_id_error( tskid ); |
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46 | |
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47 | case OBJECTS_LOCAL: |
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48 | if (_States_Is_dormant( the_thread->current_state )) |
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49 | _ITRON_return_errorno( E_OBJ ); |
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50 | |
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51 | if (( tskpri <= 0 ) || ( tskpri >= PRIORITY_MAXIMUM-1 )) |
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52 | _ITRON_return_errorno( E_PAR ); |
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53 | |
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54 | new_priority = _ITRON_Task_Priority_to_Core( tskpri ); |
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55 | the_thread->real_priority = new_priority; |
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56 | |
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57 | /* |
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58 | * The priority should not be changed until later if priority |
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59 | * inheratance has occured. |
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60 | */ |
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61 | |
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62 | if ( the_thread->resource_count == 0 || |
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63 | the_thread->current_priority > new_priority ) |
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64 | _Thread_Change_priority( the_thread, new_priority, false ); |
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65 | |
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66 | break; |
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67 | } |
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68 | |
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69 | _ITRON_return_errorno( E_OK ); |
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70 | } |
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