[ANN] atomic 0.0.1 - An atomic reference for Ruby

Ruby JRuby
1

atomic: An atomic reference implementation for JRuby and green or
GIL-threaded
Ruby implementations (MRI 1.8/1.9, Rubinius)

== Summary ==

This library provides:

  • an Atomic class that guarantees atomic updates to its contained value

The Atomic class provides accessors for the contained “value” plus two
update
methods:

  • update will run the provided block, passing the current value and
    replacing
    it with the block result iff the value has not been changed in the mean
    time.
    It may run the block repeatedly if there are other concurrent updates
    in
    progress.
  • try_update will run the provided block, passing the current value and
    replacing it with the block result. If the value changes before the
    update
    can happen, it will throw Atomic::ConcurrentUpdateError.

The atomic repository is at GitHub - headius/ruby-atomic: Atomic reference implementation for Ruby.

== Usage ==

gem install atomic

require ‘atomic’

my_atomic = Atomic.new(0)
my_atomic.update {|v| v + 1}
begin
my_atomic.try_update {|v| v + 1}
rescue Atomic::ConcurrentUpdateError => cue

deal with it (retry, propagate, etc)

end

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2

And just pushed a minor update in 0.0.2 :slight_smile:

On Tue, Jun 8, 2010 at 12:07 AM, Charles Oliver N.
[email protected] wrote:

methods:

 # deal with it (retry, propagate, etc)
end

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