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Showing content from http://ruby-concurrency.github.io/concurrent-ruby/master/Concurrent/Tuple.html below:

Class: Concurrent::Tuple — Concurrent Ruby

Inherits:

Object

• Object
• Concurrent::Tuple

show all

Includes:

Enumerable

Defined in:

lib/concurrent-ruby/concurrent/tuple.rb

A fixed size array with volatile (synchronized, thread safe) getters/setters. Mixes in Ruby's Enumerable module for enhanced search, sort, and traversal.

• #size ⇒ undocumented readonly

  The (fixed) size of the tuple.

• #compare_and_set(i, old_value, new_value) ⇒ Boolean (also: #cas)

  Set the value at the given index to the new value if and only if the current value matches the given old value.

• #each {|ref| ... } ⇒ undocumented

  Calls the given block once for each element in self, passing that element as a parameter.

• #get(i) ⇒ Object (also: #volatile_get)

  Get the value of the element at the given index.

• #initialize(size) ⇒ Tuple constructor

  Create a new tuple of the given size.

• #set(i, value) ⇒ Object (also: #volatile_set)

  Set the element at the given index to the given value.

Create a new tuple of the given size.

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# File 'lib/concurrent-ruby/concurrent/tuple.rb', line 29

def initialize(size)
  @size = size
  @tuple = tuple = ::Array.new(size)
  i = 0
  while i < size
    tuple[i] = Concurrent::AtomicReference.new
    i += 1
  end
end

The (fixed) size of the tuple.

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# File 'lib/concurrent-ruby/concurrent/tuple.rb', line 24

def size
  @size
end

Set the value at the given index to the new value if and only if the current value matches the given old value.

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# File 'lib/concurrent-ruby/concurrent/tuple.rb', line 69

def compare_and_set(i, old_value, new_value)
  return false if i >= @size || i < 0
  @tuple[i].compare_and_set(old_value, new_value)
end

Calls the given block once for each element in self, passing that element as a parameter.

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# File 'lib/concurrent-ruby/concurrent/tuple.rb', line 78

def each
  @tuple.each {|ref| yield ref.get}
end

Get the value of the element at the given index.

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# File 'lib/concurrent-ruby/concurrent/tuple.rb', line 43

def get(i)
  return nil if i >= @size || i < 0
  @tuple[i].get
end

Set the element at the given index to the given value

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# File 'lib/concurrent-ruby/concurrent/tuple.rb', line 55

def set(i, value)
  return nil if i >= @size || i < 0
  @tuple[i].set(value)
end

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