presto-main/src/main/java/io/prestosql/operator/OperationTimer.java/OperationTimer/record
class OperationTimer:        void record(long wallNanos, long cpuNanos)
        {
            this.calls.incrementAndGet();
            this.wallNanos.addAndGet(wallNanos);
            this.cpuNanos.addAndGet(cpuNanos);
        }