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Class: Concurrent::Promises::ZipFuturesPromise

Constant Summary

InternalStates - Included

PENDING, RESERVED, RESOLVED

Class Attribute Summary

Synchronization::Object - Inherited

.safe_initialization?

Class Method Summary

BlockedPromise - Inherited

.add_delayed, .new, .new_blocked_by, .new_blocked_by1, .new_blocked_by2

AbstractPromise - Inherited

.new

Synchronization::Object - Inherited

.atomic_attribute?, .atomic_attributes,
.attr_atomic

Creates methods for reading and writing to a instance variable with volatile (Java) semantic as .attr_volatile does.
.attr_volatile

Creates methods for reading and writing (as attr_accessor does) to a instance variable with volatile (Java) semantic.
.ensure_safe_initialization_when_final_fields_are_present

For testing purposes, quite slow.
.new

Has to be called by children.
.safe_initialization!, .define_initialize_atomic_fields

Synchronization::AbstractObject - Inherited

.attr_volatile, .new

Instance Method Summary

BlockedPromise - Inherited

#blocked_by

for inspection only.
#delayed_because, #on_blocker_resolution, #touch, #clear_and_propagate_touch, #on_resolvable, #process_on_blocker_resolution, #resolvable?

AbstractPromise - Inherited

#default_executor, #delayed_because,
#event

Alias for AbstractPromise#future.
#future,
#inspect

Alias for AbstractPromise#to_s.
#state, #to_s, #touch, #evaluate_to, #resolve_with

Synchronization::Object - Inherited

#__initialize_atomic_fields__

Synchronization::Volatile - Included

#full_memory_barrier

Synchronization::AbstractObject - Inherited

#full_memory_barrier

Constructor Details

.new(delayed, blockers_count, default_executor) ⇒ ZipFuturesPromise (private)

[ GitHub ] 

  


# File 'lib/concurrent-ruby/concurrent/promises.rb', line 2000



def initialize(delayed, blockers_count, default_executor)
  super(delayed, blockers_count, Future.new(self, default_executor))
  @Resolutions = ::Array.new(blockers_count, nil)

  on_resolvable nil, nil if blockers_count == 0
end


  







Instance Method Details



  

    #on_resolvable(resolved_future, index)   (private)
  

  [ GitHub ]


  

  


# File 'lib/concurrent-ruby/concurrent/promises.rb', line 2013



def on_resolvable(resolved_future, index)
  all_fulfilled = true
  values        = ::Array.new(@Resolutions.size)
  reasons       = ::Array.new(@Resolutions.size)

  @Resolutions.each_with_index do |internal_state, i|
    fulfilled, values[i], reasons[i] = internal_state.result
    all_fulfilled                    &&= fulfilled
  end

  if all_fulfilled
    resolve_with FulfilledArray.new(values)
  else
    resolve_with PartiallyRejected.new(values, reasons)
  end
end


  








  

    #process_on_blocker_resolution(future, index)   (private)
  

  [ GitHub ]


  

  


# File 'lib/concurrent-ruby/concurrent/promises.rb', line 2007



def process_on_blocker_resolution(future, index)
  # TODO (pitr-ch 18-Dec-2016): Can we assume that array will never break under parallel access when never re-sized?
  @Resolutions[index] = future.internal_state # has to be set before countdown in super
  super future, index
end