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Class: Concurrent::Promises::RunFuturePromise

Constant Summary

InternalStates - Included

PENDING, RESERVED, RESOLVED

Class Attribute Summary

Synchronization::Object - Inherited

.safe_initialization?

Class Method Summary

AbstractFlatPromise - Inherited

.new

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 Attribute Summary

AbstractFlatPromise - Inherited

#touched?

Instance Method Summary

AbstractFlatPromise - Inherited

#touch, #add_delayed_of, #on_resolvable, #resolvable?

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, run_test) ⇒ RunFuturePromise (private)

[ GitHub ] 

  


# File 'lib/concurrent-ruby/concurrent/promises.rb', line 1913



def initialize(delayed, blockers_count, default_executor, run_test)
  super delayed, 1, Future.new(self, default_executor)
  @RunTest = run_test
end


  







Instance Method Details



  

    #process_on_blocker_resolution(future, index)   (private)
  

  [ GitHub ]


  

  


# File 'lib/concurrent-ruby/concurrent/promises.rb', line 1918



def process_on_blocker_resolution(future, index)
  internal_state = future.internal_state

  unless internal_state.fulfilled?
    resolve_with internal_state
    return 0
  end

  value               = internal_state.value
  continuation_future = @RunTest.call value

  if continuation_future
    add_delayed_of continuation_future
    continuation_future.add_callback_notify_blocked self, nil
  else
    resolve_with internal_state
  end

  1
end