4.104.114.84.95
Line | |
---|
1 | /* |
---|
2 | * $Id$ |
---|
3 | */ |
---|
4 | |
---|
5 | #if HAVE_CONFIG_H |
---|
6 | #include "config.h" |
---|
7 | #endif |
---|
8 | |
---|
9 | #include <assert.h> |
---|
10 | #include <time.h> |
---|
11 | #include <errno.h> |
---|
12 | |
---|
13 | #include <rtems/system.h> |
---|
14 | #include <rtems/score/isr.h> |
---|
15 | #include <rtems/score/thread.h> |
---|
16 | #include <rtems/score/tod.h> |
---|
17 | |
---|
18 | #include <rtems/seterr.h> |
---|
19 | #include <rtems/posix/time.h> |
---|
20 | |
---|
21 | /*PAGE |
---|
22 | * |
---|
23 | * 14.2.1 Clocks, P1003.1b-1993, p. 263 |
---|
24 | */ |
---|
25 | |
---|
26 | int clock_gettime( |
---|
27 | clockid_t clock_id, |
---|
28 | struct timespec *tp |
---|
29 | ) |
---|
30 | { |
---|
31 | ISR_Level level; |
---|
32 | time_t seconds; |
---|
33 | long ticks; |
---|
34 | |
---|
35 | if ( !tp ) |
---|
36 | rtems_set_errno_and_return_minus_one( EINVAL ); |
---|
37 | |
---|
38 | switch ( clock_id ) { |
---|
39 | |
---|
40 | case CLOCK_REALTIME: |
---|
41 | |
---|
42 | _ISR_Disable( level ); |
---|
43 | seconds = _TOD_Seconds_since_epoch; |
---|
44 | ticks = _TOD_Current.ticks; |
---|
45 | _ISR_Enable( level ); |
---|
46 | |
---|
47 | tp->tv_sec = seconds + POSIX_TIME_SECONDS_1970_THROUGH_1988; |
---|
48 | tp->tv_nsec = ticks * _TOD_Microseconds_per_tick * |
---|
49 | TOD_NANOSECONDS_PER_MICROSECOND; |
---|
50 | break; |
---|
51 | |
---|
52 | #ifdef _POSIX_CPUTIME |
---|
53 | case CLOCK_PROCESS_CPUTIME: |
---|
54 | /* don't base this on _Watchdog_Ticks_since_boot--duration is too short*/ |
---|
55 | return POSIX_NOT_IMPLEMENTED(); |
---|
56 | break; |
---|
57 | #endif |
---|
58 | |
---|
59 | #ifdef _POSIX_THREAD_CPUTIME |
---|
60 | case CLOCK_THREAD_CPUTIME: |
---|
61 | return POSIX_NOT_IMPLEMENTED(); |
---|
62 | break; |
---|
63 | #endif |
---|
64 | default: |
---|
65 | rtems_set_errno_and_return_minus_one( EINVAL ); |
---|
66 | |
---|
67 | } |
---|
68 | return 0; |
---|
69 | } |
---|
Note: See
TracBrowser
for help on using the repository browser.