SharedExecutors (ONOS Java API (2.5.6))

java.lang.Object
- org.onlab.util.SharedExecutors

```
public final class SharedExecutors
extends Object
```
Utility for managing a set of shared execution resources, such as a timer, single thread executor and thread pool executor for use by various parts of the platform or by applications.
Whenever possible, use of these shared resources is encouraged over creating separate ones.

Field Summary

Fields
Modifier and Type Field Description

static int DEFAULT_POOL_SIZE

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static ExecutorService`	`getPoolThreadExecutor()`	Returns the shared thread pool executor.
`static ExecutorService`	`getSingleThreadExecutor()`	Returns the shared single thread executor.
`static Timer`	`getTimer()`	Returns the shared timer.
`static void`	`setMetricsService(MetricsService metricsService)`	Enables or disables calculation of the pool performance metrics.
`static void`	`setPoolSize(int poolSize)`	Sets the shared thread pool size.
`static void`	`shutdown()`	Shuts down all shared timers and executors and therefore should be called only by the framework.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - DEFAULT_POOL_SIZE
```
public static final int DEFAULT_POOL_SIZE
```
    See Also:
    
    Constant Field Values
- Method Detail
  - getSingleThreadExecutor
```
public static ExecutorService getSingleThreadExecutor()
```
    Returns the shared single thread executor.
    
    Returns:
    
    shared single thread executor
  - getPoolThreadExecutor
```
public static ExecutorService getPoolThreadExecutor()
```
    Returns the shared thread pool executor.
    
    Returns:
    
    shared executor pool
  - getTimer
```
public static Timer getTimer()
```
    Returns the shared timer.
    
    Returns:
    
    shared timer
  - setPoolSize
```
public static void setPoolSize(int poolSize)
```
    Sets the shared thread pool size.
    
    Parameters:
    
    poolSize - new pool size
  - setMetricsService
```
public static void setMetricsService(MetricsService metricsService)
```
    Enables or disables calculation of the pool performance metrics. If the metrics service is not null metric collection will be enabled; otherwise it will be disabled.
    
    Parameters:
    
    metricsService - optional metric service
  - shutdown
```
public static void shutdown()
```
    Shuts down all shared timers and executors and therefore should be called only by the framework.