Ydb stable 22-4-2122.4.21

x-stable-origin-commit: e89099581237299a132feafb5b58af59ebd0468a

1 files changed, 17 insertions, 0 deletions

diff --git a/util/datetime/cputimer.cpp b/util/datetime/cputimer.cpp
index a032dbd3df..32ccfd4740 100644
--- a/util/datetime/cputimer.cpp
+++ b/util/datetime/cputimer.cpp
@@ -49,10 +49,27 @@ TDuration CyclesToDuration(ui64 cycles) {
     return TDuration::MicroSeconds(cycles * 1000000 / GetCyclesPerSecond());
 }
 
+TDuration CyclesToDurationSafe(ui64 cycles)
+{
+    constexpr ui64 cyclesLimit = std::numeric_limits<ui64>::max() / 1000000;
+    if (cycles <= cyclesLimit) {
+        return CyclesToDuration(cycles);
+    }
+    return TDuration::MicroSeconds(cycles / GetCyclesPerSecond() * 1000000);
+}
+
 ui64 DurationToCycles(TDuration duration) {
     return duration.MicroSeconds() * GetCyclesPerSecond() / 1000000;
 }
 
+ui64 DurationToCyclesSafe(TDuration duration)
+{
+    if (duration.MicroSeconds() <= std::numeric_limits<ui64>::max() / GetCyclesPerSecond()) {
+        return DurationToCycles(duration);
+    }
+    return duration.MicroSeconds() / 1000000 * GetCyclesPerSecond();
+}
+
 TPrecisionTimer::TPrecisionTimer()
     : Start(::GetCycleCount())
 {