Examples of etch.util.core.nio.History.used()

etch.util.core.nio.History.used()
Adjusts the number of items being used. This is the number of items which have been allocated but not yet released. @param k positive if items are being allocated, negative if items arebeing released. Items might be released by being returned to some system facility, or they might be saved in a pool. @return true if the new value of used does not exceed the limit. @throws IllegalStateException if the new value of used would be < 0.

  public void suggested3() throws Exception
  {
    History h = new History( 0, 10, 5 );
    assertEquals( 0, h.suggested() );
    
    assertTrue( h.used( 10 ) );
    assertEquals( 10, h.getUsed() );
    
    assertEquals( 0, h.suggested() ); // avg(0, 0, 0, 0, 0) == 0
    h.tickle();
    assertEquals( 2, h.suggested() ); // avg(10, 0, 0, 0, 0) == 2

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    h.tickle();
    assertEquals( 10, h.suggested() ); // avg(10, 10, 10, 10, 10) == 10
    h.tickle();
    assertEquals( 10, h.suggested() ); // avg(10, 10, 10, 10, 10) == 10
    
    assertTrue( h.used( -10 ) );
    assertEquals( 0, h.getUsed() );
    
    h.tickle();
    assertEquals( 10, h.suggested() ); // avg(10, 10, 10, 10, 10) == 10
    h.tickle();

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  public void suggested4() throws Exception
  {
    History h = new History( 2, 10, 5 );
    assertEquals( 2, h.suggested() );
    
    assertTrue( h.used( 10 ) );
    assertEquals( 10, h.getUsed() );
    
    assertEquals( 2, h.suggested() ); // avg(2, 2, 2, 2, 2) == 2
    h.tickle();
    assertEquals( 3, h.suggested() ); // avg(10, 2, 2, 2, 2) == 3

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