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author | Joel Sherrill <joel.sherrill@OARcorp.com> | 1999-11-02 18:35:52 +0000 |
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committer | Joel Sherrill <joel.sherrill@OARcorp.com> | 1999-11-02 18:35:52 +0000 |
commit | 9f95a19a57f0f85212c320327636e93d70bbecc8 (patch) | |
tree | d62e1fc518777ce07e83994183d0d1b82a7f8a02 /c/src/exec/posix/src/clockgetres.c | |
parent | Split condition variables into multiple files. (diff) | |
download | rtems-9f95a19a57f0f85212c320327636e93d70bbecc8.tar.bz2 |
Split time.c into multiple files.
Diffstat (limited to 'c/src/exec/posix/src/clockgetres.c')
-rw-r--r-- | c/src/exec/posix/src/clockgetres.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/c/src/exec/posix/src/clockgetres.c b/c/src/exec/posix/src/clockgetres.c new file mode 100644 index 0000000000..3be3439cdb --- /dev/null +++ b/c/src/exec/posix/src/clockgetres.c @@ -0,0 +1,48 @@ +/* + * $Id$ + */ + +#include <assert.h> +#include <time.h> +#include <errno.h> + +#include <rtems/system.h> +#include <rtems/score/isr.h> +#include <rtems/score/thread.h> +#include <rtems/score/tod.h> + +#include <rtems/posix/seterr.h> +#include <rtems/posix/time.h> + +/*PAGE + * + * 14.2.1 Clocks, P1003.1b-1993, p. 263 + */ + +int clock_getres( + clockid_t clock_id, + struct timespec *res +) +{ + if ( !res ) + set_errno_and_return_minus_one( EINVAL ); + + switch ( clock_id ) { + + /* + * All time in rtems is based on the same clock tick. + */ + + case CLOCK_REALTIME: + case CLOCK_PROCESS_CPUTIME: + case CLOCK_THREAD_CPUTIME: + if ( res ) + _POSIX_Interval_to_timespec( _TOD_Microseconds_per_tick, res ); + break; + + default: + set_errno_and_return_minus_one( EINVAL ); + + } + return 0; +} |