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1 | /** |
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2 | * @file |
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3 | * |
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4 | * @brief Adjust the Time of Time |
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5 | * @ingroup ScoreTOD |
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6 | */ |
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7 | |
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8 | /* |
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9 | * COPYRIGHT (c) 1989-2014. |
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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/score/todimpl.h> |
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22 | |
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23 | void _TOD_Adjust( |
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24 | const Timestamp_Control *delta |
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25 | ) |
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26 | { |
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27 | Timestamp_Control tod; |
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28 | ISR_lock_Context lock_context; |
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29 | |
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30 | /* |
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31 | * Currently, RTEMS does the adjustment in one movement. |
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32 | * Given interest, requirements, and sponsorship, a future |
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33 | * enhancement would be to adjust the time in smaller increments |
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34 | * at each clock tick. Until then, there is no outstanding |
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35 | * adjustment. |
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36 | */ |
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37 | |
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38 | _TOD_Lock(); |
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39 | _TOD_Acquire( &lock_context ); |
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40 | _TOD_Get( &tod ); |
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41 | _Timestamp_Add_to( &tod, delta ); |
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42 | _TOD_Set( &tod, &lock_context ); |
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43 | _TOD_Unlock(); |
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44 | } |
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