ThreadResourcesBalancer

java.lang.Object

org.apache.maven.surefire.junitcore.pc.ThreadResourcesBalancer

All Implemented Interfaces:: Balancer

final class ThreadResourcesBalancer extends Object implements Balancer

Since:

2.16

See Also:

Balancer

Field Summary

Fields

Modifier and Type

Field

Description

private final Semaphore

balancer

private final int

numPermits
Constructor Summary

Constructors

Constructor

Description

ThreadResourcesBalancer(int numPermits)

fair set to false.

ThreadResourcesBalancer(int numPermits, boolean fair)
Method Summary

Modifier and Type

Method

Description

boolean

acquirePermit()

Acquires a permit from this balancer, blocking until one is available.

void

releaseAllPermits()

void

releasePermit()

Releases a permit, returning it to the balancer.

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

Field Details
- balancer
  
  private final Semaphore balancer
- numPermits
  
  private final int numPermits
Constructor Details
- ThreadResourcesBalancer
  
  ThreadResourcesBalancer(int numPermits)
  
  fair set to false.
  Parameters:
  
  numPermits - number of permits to acquire when maintaining concurrency on tests. Must be >0 and < Integer.MAX_VALUE.
  
  See Also:
  
  ThreadResourcesBalancer(int, boolean)
- ThreadResourcesBalancer
  
  ThreadResourcesBalancer(int numPermits, boolean fair)
  
  Parameters:
  
  numPermits - number of permits to acquire when maintaining concurrency on tests. Must be >0 and < Integer.MAX_VALUE.
  
  fair - true guarantees the waiting schedulers to wake up in order they acquired a permit
  
  Throws:
  
  IllegalArgumentException - if numPermits is not positive number
Method Details
- acquirePermit
  
  public boolean acquirePermit()
  
  Acquires a permit from this balancer, blocking until one is available.
  
  Specified by:
  
  acquirePermit in interface Balancer
  
  Returns:
  
  true if current thread is NOT interrupted while waiting for a permit.
- releasePermit
  
  public void releasePermit()
  
  Releases a permit, returning it to the balancer.
  
  Specified by:
  
  releasePermit in interface Balancer
- releaseAllPermits
  
  public void releaseAllPermits()
  
  Specified by:
  
  releaseAllPermits in interface Balancer