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-rw-r--r--cpukit/posix/src/time.c192
1 files changed, 192 insertions, 0 deletions
diff --git a/cpukit/posix/src/time.c b/cpukit/posix/src/time.c
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+/* time.c
+ *
+ */
+
+#include <time.h>
+#include <rtems/score/tod.h>
+
+/*
+ * Seconds from January 1, 1970 to January 1, 1988. Used to account for
+ * differences between POSIX API and RTEMS core.
+ */
+
+#define POSIX_TIME_SECONDS_1970_THROUGH_1988 \
+ (((1987 - 1970 + 1) * TOD_SECONDS_PER_NON_LEAP_YEAR) + \
+ (4 * TOD_SECONDS_PER_DAY))
+
+/*
+ * 4.5.1 Get System Time, P1003.1b-1993, p. 91
+ */
+
+time_t time(
+ time_t *tloc
+)
+{
+ time_t seconds_since_epoch;
+
+ if ( !_TOD_Is_set() ) {
+ /* XXX set errno */
+ return -1;
+ }
+
+ /*
+ * Internally the RTEMS epoch is 1988. This must be taken into account.
+ */
+
+ seconds_since_epoch = _TOD_Seconds_since_epoch;
+
+ seconds_since_epoch += POSIX_TIME_SECONDS_1970_THROUGH_1988;
+
+ if ( tloc )
+ *tloc = seconds_since_epoch;
+
+ return seconds_since_epoch;
+}
+
+#ifdef NOT_IMPLEMENTED_YET
+/*
+ * 14.2.1 Clocks, P1003.1b-1993, p. 263
+ */
+
+int clock_settime(
+ clockid_t clock_id,
+ const struct timespec *tp
+)
+{
+ return POSIX_NOT_IMPLEMENTED();
+}
+
+/*
+ * 14.2.1 Clocks, P1003.1b-1993, p. 263
+ */
+
+int clock_gettime(
+ clockid_t clock_id,
+ struct timespec *tp
+)
+{
+ return POSIX_NOT_IMPLEMENTED();
+}
+
+/*
+ * 14.2.1 Clocks, P1003.1b-1993, p. 263
+ */
+
+int clock_getres(
+ clockid_t clock_id,
+ struct timespec *res
+)
+{
+ return POSIX_NOT_IMPLEMENTED();
+}
+
+/*
+ * 14.2.2 Create a Per-Process Timer, P1003.1b-1993, p. 264
+ */
+
+int timer_create(
+ clockid_t clock_id,
+ struct sigevent *evp,
+ timer_t *timerid
+)
+{
+ return POSIX_NOT_IMPLEMENTED();
+}
+
+/*
+ * 14.2.3 Delete a Per_process Timer, P1003.1b-1993, p. 266
+ */
+
+int timer_delete(
+ timer_t timerid
+)
+{
+ return POSIX_NOT_IMPLEMENTED();
+}
+
+/*
+ * 14.2.4 Per-Process Timers, P1003.1b-1993, p. 267
+ */
+
+int timer_settime(
+ timer_t timerid,
+ int flags,
+ const struct itimerspec *value,
+ struct itimerspec *ovalue
+)
+{
+ return POSIX_NOT_IMPLEMENTED();
+}
+
+/*
+ * 14.2.4 Per-Process Timers, P1003.1b-1993, p. 267
+ */
+
+int timer_gettime(
+ timer_t timerid,
+ struct itimerspec *value
+)
+{
+ return POSIX_NOT_IMPLEMENTED();
+}
+
+/*
+ * 14.2.4 Per-Process Timers, P1003.1b-1993, p. 267
+ */
+
+int timer_getoverrun(
+ timer_t timerid
+)
+{
+ return POSIX_NOT_IMPLEMENTED();
+}
+
+/*
+ * 14.2.5 High Resolution Sleep, P1003.1b-1993, p. 269
+ */
+
+int nanosleep(
+ const struct timespec *rqtp,
+ struct timespec *rmtp
+)
+{
+ return POSIX_NOT_IMPLEMENTED();
+}
+
+/*
+ * 20.1.3 Accessing a Process CPU-time CLock, P1003.4b/D8, p. 55
+ */
+
+int clock_getcpuclockid(
+ pid_t pid,
+ clockid_t *clock_id
+)
+{
+ return POSIX_NOT_IMPLEMENTED();
+}
+
+/*
+ * 20.1.5 CPU-time Clock Attribute Access, P1003.4b/D8, p. 58
+ */
+
+int clock_setenable_attr(
+ clockid_t clock_id,
+ int attr
+)
+{
+ return POSIX_NOT_IMPLEMENTED();
+}
+
+/*
+ * 20.1.5 CPU-time Clock Attribute Access, P1003.4b/D8, p. 58
+ */
+
+int clock_getenable_attr(
+ clockid_t clock_id,
+ int *attr
+)
+{
+ return POSIX_NOT_IMPLEMENTED();
+}
+
+#endif