+/* Licensed under BSD-MIT - see LICENSE file for details */
#include <ccan/time/time.h>
#include <stdlib.h>
-#include <assert.h>
+#include <stdio.h>
-struct timeval time_now(void)
+#if !HAVE_CLOCK_GETTIME && !HAVE_CLOCK_GETTIME_IN_LIBRT
+#include <sys/time.h>
+
+struct timeabs time_now(void)
{
struct timeval now;
+ struct timeabs ret;
gettimeofday(&now, NULL);
- return now;
-}
-
-bool time_greater(struct timeval a, struct timeval b)
-{
- if (a.tv_sec > b.tv_sec)
- return true;
- else if (a.tv_sec < b.tv_sec)
- return false;
-
- return a.tv_usec > b.tv_usec;
-}
-
-bool time_less(struct timeval a, struct timeval b)
-{
- if (a.tv_sec < b.tv_sec)
- return true;
- else if (a.tv_sec > b.tv_sec)
- return false;
-
- return a.tv_usec < b.tv_usec;
+ ret.ts.tv_sec = now.tv_sec;
+ ret.ts.tv_nsec = now.tv_usec * 1000;
+ return TIMEABS_CHECK(ret);
}
-
-bool time_eq(struct timeval a, struct timeval b)
+#else
+#include <time.h>
+struct timeabs time_now(void)
{
- return a.tv_sec == b.tv_sec && a.tv_usec == b.tv_usec;
+ struct timeabs ret;
+ clock_gettime(CLOCK_REALTIME, &ret.ts);
+ return TIMEABS_CHECK(ret);
}
+#endif /* HAVE_CLOCK_GETTIME || HAVE_CLOCK_GETTIME_IN_LIBRT */
-struct timeval time_sub(struct timeval recent, struct timeval old)
+struct timerel time_divide(struct timerel t, unsigned long div)
{
- struct timeval diff;
-
- diff.tv_sec = recent.tv_sec - old.tv_sec;
- if (old.tv_usec > recent.tv_usec) {
- diff.tv_sec--;
- diff.tv_usec = 1000000 + recent.tv_usec - old.tv_usec;
- } else
- diff.tv_usec = recent.tv_usec - old.tv_usec;
-
- assert(diff.tv_sec >= 0);
- return diff;
-}
-
-struct timeval time_add(struct timeval a, struct timeval b)
-{
- struct timeval sum;
-
- sum.tv_sec = a.tv_sec + b.tv_sec;
- sum.tv_usec = a.tv_usec + b.tv_usec;
- if (sum.tv_usec > 1000000) {
- sum.tv_sec++;
- sum.tv_usec -= 1000000;
+ struct timerel res;
+ uint64_t rem, ns;
+
+ /* Dividing seconds is simple. */
+ res.ts.tv_sec = TIMEREL_CHECK(t).ts.tv_sec / div;
+ rem = t.ts.tv_sec % div;
+
+ /* If we can't fit remainder * 1,000,000,000 in 64 bits? */
+#if 0 /* ilog is great, but we use fp for multiply anyway. */
+ bits = ilog64(rem);
+ if (bits + 30 >= 64) {
+ /* Reduce accuracy slightly */
+ rem >>= (bits - (64 - 30));
+ div >>= (bits - (64 - 30));
}
- return sum;
+#endif
+ if (rem & ~(((uint64_t)1 << 30) - 1)) {
+ /* FIXME: fp is cheating! */
+ double nsec = rem * 1000000000.0 + t.ts.tv_nsec;
+ res.ts.tv_nsec = nsec / div;
+ } else {
+ ns = rem * 1000000000 + t.ts.tv_nsec;
+ res.ts.tv_nsec = ns / div;
+ }
+ return TIMEREL_CHECK(res);
}
-struct timeval time_divide(struct timeval t, unsigned long div)
+struct timerel time_multiply(struct timerel t, unsigned long mult)
{
- return time_from_usec(time_to_usec(t) / div);
-}
+ struct timerel res;
-struct timeval time_multiply(struct timeval t, unsigned long mult)
-{
- return time_from_usec(time_to_usec(t) * mult);
-}
+ /* Are we going to overflow if we multiply nsec? */
+ if (mult & ~((1UL << 30) - 1)) {
+ /* FIXME: fp is cheating! */
+ double nsec = (double)t.ts.tv_nsec * mult;
-uint64_t time_to_msec(struct timeval t)
-{
- uint64_t msec;
+ res.ts.tv_sec = nsec / 1000000000.0;
+ res.ts.tv_nsec = nsec - (res.ts.tv_sec * 1000000000.0);
+ } else {
+ uint64_t nsec = t.ts.tv_nsec * mult;
- msec = t.tv_usec / 1000 + (uint64_t)t.tv_sec * 1000;
- return msec;
+ res.ts.tv_nsec = nsec % 1000000000;
+ res.ts.tv_sec = nsec / 1000000000;
+ }
+ res.ts.tv_sec += TIMEREL_CHECK(t).ts.tv_sec * mult;
+ return TIMEREL_CHECK(res);
}
-uint64_t time_to_usec(struct timeval t)
+struct timespec time_check_(struct timespec t, const char *abortstr)
{
- uint64_t usec;
-
- usec = t.tv_usec + (uint64_t)t.tv_sec * 1000000;
- return usec;
+ if (t.tv_sec < 0 || t.tv_nsec >= 1000000000) {
+ if (abortstr) {
+ fprintf(stderr, "%s: malformed time %li.%09li\n",
+ abortstr,
+ (long)t.tv_sec, (long)t.tv_nsec);
+ abort();
+ } else {
+ struct timespec old = t;
+
+ if (t.tv_nsec >= 1000000000) {
+ t.tv_sec += t.tv_nsec / 1000000000;
+ t.tv_nsec %= 1000000000;
+ }
+ if (t.tv_sec < 0)
+ t.tv_sec = 0;
+
+ fprintf(stderr, "WARNING: malformed time"
+ " %li seconds %li ns converted to %li.%09li.\n",
+ (long)old.tv_sec, (long)old.tv_nsec,
+ (long)t.tv_sec, (long)t.tv_nsec);
+ }
+ }
+ return t;
}
-struct timeval time_from_msec(uint64_t msec)
+struct timerel timerel_check(struct timerel t, const char *abortstr)
{
- struct timeval t;
+ struct timerel ret;
- t.tv_usec = (msec % 1000) * 1000;
- t.tv_sec = msec / 1000;
- return t;
+ ret.ts = time_check_(t.ts, abortstr);
+ return ret;
}
-struct timeval time_from_usec(uint64_t usec)
+struct timeabs timeabs_check(struct timeabs t, const char *abortstr)
{
- struct timeval t;
+ struct timeabs ret;
- t.tv_usec = usec % 1000000;
- t.tv_sec = usec / 1000000;
- return t;
+ ret.ts = time_check_(t.ts, abortstr);
+ return ret;
}
projects / ccan / blobdiff