summaryrefslogtreecommitdiffstats
path: root/cpukit/posix/src/clockgettime.c
diff options
context:
space:
mode:
authorJoel Sherrill <joel.sherrill@OARcorp.com>1999-11-02 18:35:52 +0000
committerJoel Sherrill <joel.sherrill@OARcorp.com>1999-11-02 18:35:52 +0000
commit9f95a19a57f0f85212c320327636e93d70bbecc8 (patch)
treed62e1fc518777ce07e83994183d0d1b82a7f8a02 /cpukit/posix/src/clockgettime.c
parentSplit condition variables into multiple files. (diff)
downloadrtems-9f95a19a57f0f85212c320327636e93d70bbecc8.tar.bz2
Split time.c into multiple files.
Diffstat (limited to 'cpukit/posix/src/clockgettime.c')
-rw-r--r--cpukit/posix/src/clockgettime.c65
1 files changed, 65 insertions, 0 deletions
diff --git a/cpukit/posix/src/clockgettime.c b/cpukit/posix/src/clockgettime.c
new file mode 100644
index 0000000000..806a29caa3
--- /dev/null
+++ b/cpukit/posix/src/clockgettime.c
@@ -0,0 +1,65 @@
+/*
+ * $Id$
+ */
+
+#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_gettime(
+ clockid_t clock_id,
+ struct timespec *tp
+)
+{
+ ISR_Level level;
+ time_t seconds;
+ long ticks;
+
+ if ( !tp )
+ set_errno_and_return_minus_one( EINVAL );
+
+ switch ( clock_id ) {
+
+ case CLOCK_REALTIME:
+
+ _ISR_Disable( level );
+ seconds = _TOD_Seconds_since_epoch;
+ ticks = _TOD_Current.ticks;
+ _ISR_Enable( level );
+
+ tp->tv_sec = seconds + POSIX_TIME_SECONDS_1970_THROUGH_1988;
+ tp->tv_nsec = ticks * _TOD_Microseconds_per_tick *
+ TOD_NANOSECONDS_PER_MICROSECOND;
+ break;
+
+#ifdef _POSIX_CPUTIME
+ case CLOCK_PROCESS_CPUTIME:
+ /* don't base this on _Watchdog_Ticks_since_boot--duration is too short*/
+ return POSIX_NOT_IMPLEMENTED();
+ break;
+#endif
+
+#ifdef _POSIX_THREAD_CPUTIME
+ case CLOCK_THREAD_CPUTIME:
+ return POSIX_NOT_IMPLEMENTED();
+ break;
+#endif
+ default:
+ set_errno_and_return_minus_one( EINVAL );
+
+ }
+ return 0;
+}