Class: Supervision::Atomic

Inherits:

Object

• Object
• Supervision::Atomic

Defined in:

lib/supervision/atomic.rb

Overview

A class responsible for creating threadsafe value objects

Instance Method Summary

• #get ⇒ Object (also: #value)

  Retrieve value.

• #initialize(value = nil) ⇒ Atomic constructor

  Initialize an Atomic instance.

• #set(new_value) ⇒ Object (also: #value=)

  Set value.

• #update ⇒ Object

  Update value.

Constructor Details

#initialize(value = nil) ⇒ Atomic

Initialize an Atomic instance

Parameters:

• value (Numeric) (defaults to: nil)

# File 'lib/supervision/atomic.rb', line 12

def initialize(value = nil)
  @mutex = Mutex.new
  @value = value
end

Instance Method Details

#get ⇒ Object Also known as: value

Retrieve value

# File 'lib/supervision/atomic.rb', line 20

def get
  @mutex.synchronize { @value }
end

#set(new_value) ⇒ Object Also known as: value=

Set value

# File 'lib/supervision/atomic.rb', line 28

def set(new_value)
  @mutex.synchronize { @value = new_value}
end

#update ⇒ Object

Update value

# File 'lib/supervision/atomic.rb', line 36

def update
  set(new_value = yield(get)) if block_given?
  new_value
end