internal TimeCheckPointThreshold(long thresholdMillis, SystemNanoClock clock) : base("time threshold")
{
this._timeMillisThreshold = thresholdMillis;
this._clock = clock;
// The random start offset means database in a cluster will not all check-point at the same time.
long randomStartOffset = thresholdMillis > 0 ? ThreadLocalRandom.current().nextLong(thresholdMillis) : 0;
this._lastCheckPointTimeNanos = clock.Nanos() + TimeUnit.MILLISECONDS.toNanos(randomStartOffset);
}
public TransactionExecutionStatistic(KernelTransactionImplementation tx, SystemNanoClock clock, long startTimeMillis)
{
long nowMillis = clock.Millis();
long nowNanos = clock.Nanos();
KernelTransactionImplementation.Statistics statistics = tx.GetStatistics();
this._waitTimeMillis = NANOSECONDS.toMillis(statistics.GetWaitingTimeNanos(nowNanos));
this._heapAllocatedBytes = NullIfNegative(statistics.HeapAllocatedBytes());
this._directAllocatedBytes = NullIfNegative(statistics.DirectAllocatedBytes());
this._cpuTimeMillis = NullIfNegative(statistics.CpuTimeMillis());
this._pageFaults = statistics.TotalTransactionPageCacheFaults();
this._pageHits = statistics.TotalTransactionPageCacheHits();
this._elapsedTimeMillis = nowMillis - startTimeMillis;
this._idleTimeMillis = this._cpuTimeMillis != null ? _elapsedTimeMillis - this._cpuTimeMillis - _waitTimeMillis : null;
}