4.104.114.84.95
Last change
on this file since 98dca75 was
98dca75,
checked in by Joel Sherrill <joel.sherrill@…>, on 11/02/99 at 18:25:26
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Split condition variables into multiple files.
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-
Property mode set to
100644
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File size:
1.2 KB
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1 | /* |
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2 | * $Id$ |
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3 | */ |
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4 | |
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5 | #include <pthread.h> |
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6 | #include <errno.h> |
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7 | |
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8 | #include <rtems/system.h> |
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9 | #include <rtems/score/object.h> |
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10 | #include <rtems/score/states.h> |
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11 | #include <rtems/score/watchdog.h> |
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12 | #include <rtems/posix/cond.h> |
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13 | #include <rtems/posix/time.h> |
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14 | #include <rtems/posix/mutex.h> |
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15 | |
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16 | /*PAGE |
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17 | * |
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18 | * 11.4.4 Waiting on a Condition, P1003.1c/Draft 10, p. 105 |
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19 | */ |
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20 | |
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21 | int pthread_cond_timedwait( |
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22 | pthread_cond_t *cond, |
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23 | pthread_mutex_t *mutex, |
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24 | const struct timespec *abstime |
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25 | ) |
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26 | { |
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27 | Watchdog_Interval timeout; |
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28 | struct timespec current_time; |
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29 | struct timespec difference; |
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30 | boolean already_timedout = FALSE; |
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31 | |
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32 | if ( !abstime ) |
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33 | return EINVAL; |
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34 | |
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35 | /* |
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36 | * The abstime is a walltime. We turn it into an interval. |
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37 | */ |
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38 | |
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39 | (void) clock_gettime( CLOCK_REALTIME, ¤t_time ); |
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40 | |
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41 | /* XXX probably some error checking should go here */ |
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42 | |
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43 | _POSIX_Timespec_subtract( ¤t_time, abstime, &difference ); |
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44 | |
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45 | if ( ( difference.tv_sec < 0 ) || ( ( difference.tv_sec == 0 ) && |
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46 | ( difference.tv_nsec < 0 ) ) ) |
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47 | already_timedout = TRUE; |
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48 | |
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49 | timeout = _POSIX_Timespec_to_interval( &difference ); |
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50 | |
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51 | return _POSIX_Condition_variables_Wait_support( |
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52 | cond, |
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53 | mutex, |
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54 | timeout, |
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55 | already_timedout |
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56 | ); |
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57 | } |
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