TimingSource (Hibernate Search 6.1.5.Final)

```
public interface TimingSource
```
Since:

4.1

Author:

Sanne Grinovero (C) 2012 Red Hat Inc.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`ensureTimeEstimateIsInitialized()`	Needs to be invoked at least once before `monotonicTimeEstimate()` can be used.
`long`	`monotonicTimeEstimate()`	Returns an approximation of `System.nanoTime()`.
`long`	`nanoTime()`	Returns current system time in nanoseconds.
`void`	`stop()`	Invoked on engine integration shutdown.

- Method Detail
  - monotonicTimeEstimate
```
long monotonicTimeEstimate()
```
    Returns an approximation of System.nanoTime(). Performance should be preferred over accuracy by the implementation, but the value is monotonic and expresses time in milliseconds, however, subsequent invocations could return the same value.
    
    Returns:
    
    an increasing value related to time in milliseconds. Only meaningful to compare time intervals, with no guarantees of high precision.
  - stop
```
void stop()
```
    Invoked on engine integration shutdown. There is no start method as it's expected to be lazily initialized
  - ensureTimeEstimateIsInitialized
```
void ensureTimeEstimateIsInitialized()
```
    Needs to be invoked at least once before monotonicTimeEstimate() can be used. Safe to be invoked multiple times.
  - nanoTime
```
long nanoTime()
```
    Returns current system time in nanoseconds. Accuracy is preferred over performance by the implementation.
    
    Returns:
    
    high precision current time in nanoseconds.