Class: Semaphore

Inherits:
Object
  • Object
show all
Defined in:
lib/farcall/monitor_lock.rb

Overview

:nodoc:

Instance Method Summary collapse

Constructor Details

#initialize(state_set = false) ⇒ Semaphore

Returns a new instance of Semaphore.



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# File 'lib/farcall/monitor_lock.rb', line 29

def initialize state_set=false
  @monitor = MontorLock.new
  @state_set = state_set
end

Instance Method Details

#clear ⇒ Object 



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# File 'lib/farcall/monitor_lock.rb', line 71

def clear
  set false
end

#clear? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/farcall/monitor_lock.rb', line 38

def clear?
  !set?
end

#set(new_state = true) ⇒ Object 



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# File 'lib/farcall/monitor_lock.rb', line 64

def set new_state=true
  if @state_set != new_state
    @state_set = new_state
    @monitor.notify
  end
end

#set? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/farcall/monitor_lock.rb', line 34

def set?
  @state_set
end

#wait(state) ⇒ Object 



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# File 'lib/farcall/monitor_lock.rb', line 42

def wait state
  while @state_set != state do
    @monitor.wait
  end
  @state_set
end

#wait_change(&block) ⇒ Object 



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# File 'lib/farcall/monitor_lock.rb', line 57

def wait_change &block
  @monitor.wait {
    block.call(@state_set) if block
  }
  @state_set
end

#wait_clear ⇒ Object 



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# File 'lib/farcall/monitor_lock.rb', line 53

def wait_clear
  wait false
end

#wait_set ⇒ Object 



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# File 'lib/farcall/monitor_lock.rb', line 49

def wait_set
  wait true
end