1 | /** |
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2 | * @file |
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3 | * |
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4 | * @brief RTEMS Timer Reset |
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5 | * @ingroup ClassicTimer Timers |
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6 | */ |
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7 | |
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8 | /* |
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9 | * COPYRIGHT (c) 1989-2007. |
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10 | * On-Line Applications Research Corporation (OAR). |
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11 | * |
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12 | * The license and distribution terms for this file may be |
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13 | * found in the file LICENSE in this distribution or at |
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14 | * http://www.rtems.org/license/LICENSE. |
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15 | */ |
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16 | |
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17 | #if HAVE_CONFIG_H |
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18 | #include "config.h" |
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19 | #endif |
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20 | |
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21 | #include <rtems/system.h> |
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22 | #include <rtems/rtems/status.h> |
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23 | #include <rtems/rtems/support.h> |
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24 | #include <rtems/score/thread.h> |
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25 | #include <rtems/rtems/timerimpl.h> |
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26 | #include <rtems/score/watchdogimpl.h> |
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27 | |
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28 | /* |
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29 | * rtems_timer_reset |
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30 | * |
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31 | * This directive allows a thread to reset a timer. |
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32 | * |
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33 | * Input parameters: |
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34 | * id - timer id |
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35 | * |
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36 | * Output parameters: |
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37 | * RTEMS_SUCCESSFUL - if successful |
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38 | * error code - if unsuccessful |
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39 | */ |
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40 | |
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41 | rtems_status_code rtems_timer_reset( |
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42 | rtems_id id |
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43 | ) |
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44 | { |
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45 | Timer_Control *the_timer; |
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46 | Objects_Locations location; |
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47 | ISR_lock_Context lock_context; |
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48 | Per_CPU_Control *cpu; |
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49 | rtems_status_code status; |
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50 | |
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51 | the_timer = _Timer_Get( id, &location, &lock_context ); |
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52 | switch ( location ) { |
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53 | |
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54 | case OBJECTS_LOCAL: |
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55 | cpu = _Timer_Acquire_critical( the_timer, &lock_context ); |
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56 | |
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57 | if ( _Timer_Is_interval_class( the_timer->the_class ) ) { |
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58 | _Timer_Cancel( cpu, the_timer ); |
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59 | _Watchdog_Insert( |
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60 | &cpu->Watchdog.Header[ PER_CPU_WATCHDOG_RELATIVE ], |
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61 | &the_timer->Ticker, |
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62 | cpu->Watchdog.ticks + the_timer->initial |
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63 | ); |
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64 | status = RTEMS_SUCCESSFUL; |
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65 | } else { |
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66 | status = RTEMS_NOT_DEFINED; |
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67 | } |
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68 | |
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69 | _Timer_Release( cpu, &lock_context ); |
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70 | return status; |
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71 | |
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72 | #if defined(RTEMS_MULTIPROCESSING) |
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73 | case OBJECTS_REMOTE: /* should never return this */ |
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74 | #endif |
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75 | case OBJECTS_ERROR: |
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76 | break; |
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77 | } |
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78 | |
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79 | return RTEMS_INVALID_ID; |
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80 | } |
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