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time-util: rename usec_sub() to usec_sub_signed() and add usec_sub_unsigned()

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Quite often we just want to subtract two normal usec_t values, hence
provide an implementation for that.
This commit is contained in:
Lennart Poettering
2017-06-22 20:51:06 +02:00
parent 8825742c44
commit 54d8ef14d8
4 changed files with 49 additions and 23 deletions
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src/basic/time-util.c
+6 -6
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@@ -107,7 +107,7 @@ dual_timestamp* dual_timestamp_from_realtime(dual_timestamp *ts, usec_t u) {
ts->realtime = u;
delta = (int64_t) now(CLOCK_REALTIME) - (int64_t) u;
ts->monotonic = usec_sub(now(CLOCK_MONOTONIC), delta);
ts->monotonic = usec_sub_signed(now(CLOCK_MONOTONIC), delta);
return ts;
}
@@ -124,8 +124,8 @@ triple_timestamp* triple_timestamp_from_realtime(triple_timestamp *ts, usec_t u)
ts->realtime = u;
delta = (int64_t) now(CLOCK_REALTIME) - (int64_t) u;
ts->monotonic = usec_sub(now(CLOCK_MONOTONIC), delta);
ts->boottime = clock_boottime_supported() ? usec_sub(now(CLOCK_BOOTTIME), delta) : USEC_INFINITY;
ts->monotonic = usec_sub_signed(now(CLOCK_MONOTONIC), delta);
ts->boottime = clock_boottime_supported() ? usec_sub_signed(now(CLOCK_BOOTTIME), delta) : USEC_INFINITY;
return ts;
}
@@ -141,7 +141,7 @@ dual_timestamp* dual_timestamp_from_monotonic(dual_timestamp *ts, usec_t u) {
ts->monotonic = u;
delta = (int64_t) now(CLOCK_MONOTONIC) - (int64_t) u;
ts->realtime = usec_sub(now(CLOCK_REALTIME), delta);
ts->realtime = usec_sub_signed(now(CLOCK_REALTIME), delta);
return ts;
}
@@ -156,8 +156,8 @@ dual_timestamp* dual_timestamp_from_boottime_or_monotonic(dual_timestamp *ts, us
dual_timestamp_get(ts);
delta = (int64_t) now(clock_boottime_or_monotonic()) - (int64_t) u;
ts->realtime = usec_sub(ts->realtime, delta);
ts->monotonic = usec_sub(ts->monotonic, delta);
ts->realtime = usec_sub_signed(ts->realtime, delta);
ts->monotonic = usec_sub_signed(ts->monotonic, delta);
return ts;
}