4.115
Last change
on this file since 5472ad41 was
cae389ba,
checked in by Joel Sherrill <joel.sherrill@…>, on 09/01/11 at 18:24:47
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2011-09-01 Joel Sherrill <joel.sherrilL@…>
PR 1895/cpukit
- score/src/coretodmsecstoticks.c, score/src/coretodusectoticks.c,
score/src/timespectoticks.c: Ensure time conversions to ticks do not
ignore partial tick and return 1 less than desired.
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-
Property mode set to
100644
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File size:
924 bytes
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1 | /* COPYRIGHT (c) 1989-2011. |
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2 | * On-Line Applications Research Corporation (OAR). |
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3 | * |
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4 | * The license and distribution terms for this file may be |
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5 | * found in the file LICENSE in this distribution or at |
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6 | * http://www.rtems.com/license/LICENSE. |
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7 | * |
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8 | * $Id$ |
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9 | */ |
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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/system.h> |
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17 | #include <rtems/config.h> |
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18 | #include <rtems/score/tod.h> |
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19 | |
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20 | uint32_t TOD_MICROSECONDS_TO_TICKS( |
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21 | uint32_t microseconds |
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22 | ) |
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23 | { |
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24 | uint32_t ticks; |
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25 | uint32_t microseconds_per_tick; |
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26 | |
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27 | /** |
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28 | * We should ensure the ticks not be truncated by integer division. We |
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29 | * need to have it be greater than or equal to the requested time. It |
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30 | * should not be shorter. |
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31 | */ |
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32 | microseconds_per_tick = rtems_configuration_get_microseconds_per_tick(); |
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33 | ticks = microseconds / microseconds_per_tick; |
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34 | if ( (microseconds % microseconds_per_tick) != 0 ) |
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35 | ticks += 1; |
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36 | |
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37 | return ticks; |
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38 | } |
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