posix: refactor timespec_to_timeoutms() to use tp_diff()
Use the tp_diff() macro as a means of converting an absolute timeout
with respect to a specific clock to a relative timeout, in ms.
Clamp the result between 0 and UINT32_MAX.
Signed-off-by: Chris Friedt <cfriedt@tenstorrent.com>
diff --git a/lib/posix/options/timespec_to_timeout.c b/lib/posix/options/timespec_to_timeout.c
index d307efa..068646c 100644
--- a/lib/posix/options/timespec_to_timeout.c
+++ b/lib/posix/options/timespec_to_timeout.c
@@ -6,24 +6,19 @@
#include "posix_clock.h"
-#include <zephyr/kernel.h>
-#include <ksched.h>
+#include <limits.h>
+#include <stdint.h>
+
#include <zephyr/posix/time.h>
+#include <zephyr/sys/util.h>
uint32_t timespec_to_timeoutms(clockid_t clock_id, const struct timespec *abstime)
{
- int64_t milli_secs, secs, nsecs;
struct timespec curtime;
- clock_gettime(clock_id, &curtime);
- secs = abstime->tv_sec - curtime.tv_sec;
- nsecs = abstime->tv_nsec - curtime.tv_nsec;
-
- if (secs < 0 || (secs == 0 && nsecs < NSEC_PER_MSEC)) {
- milli_secs = 0;
- } else {
- milli_secs = secs * MSEC_PER_SEC + nsecs / NSEC_PER_MSEC;
+ if (clock_gettime(clock_id, &curtime) < 0) {
+ return 0;
}
- return milli_secs;
+ return CLAMP(tp_diff(abstime, &curtime) / NSEC_PER_MSEC, 0, UINT32_MAX);
}
