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Class: ActiveSupport::Reloader

Relationships & Source Files
Super Chains via Extension / Inclusion / Inheritance
Class Chain:
self, ExecutionWrapper, DescendantsTracker
Instance Chain:
self, ExecutionWrapper, Callbacks
Inherits: ActiveSupport::ExecutionWrapper
Defined in: activesupport/lib/active_support/reloader.rb

Constant Summary

Callbacks - Included

CALLBACK_FILTER_TYPES

Class Attribute Summary

ExecutionWrapper - Inherited

.__callbacks, .__callbacks?, .active

Class Method Summary

ExecutionWrapper - Inherited

.register_hook

Register an object to be invoked during both the run and complete steps.
.run!

Run this execution.
.to_complete, .to_run,
.wrap

Perform the work in the supplied block as an execution.

DescendantsTracker - Inherited

clear, descendants, direct_descendants,
store_inherited

This is the only method that is not thread safe, but is only ever called during the eager loading phase.

Instance Attribute Summary

ExecutionWrapper - Inherited

#__callbacks, #__callbacks?

Instance Method Summary

ExecutionWrapper - Inherited

#complete!

Complete this in-flight execution.

Callbacks - Included

#run_callbacks

Runs the callbacks for the given event.

Constructor Details

.new ⇒ Reloader

[ GitHub ] 

  


# File 'activesupport/lib/active_support/reloader.rb', line 92



def initialize
  super
  @locked = false
end


  







Class Attribute Details



  

    .check   (rw)
  

  [ GitHub ]


  

  


# File 'activesupport/lib/active_support/reloader.rb', line 78



class_attribute :check, default: lambda { false }


  








  

    .check?  ⇒ Boolean  (rw)
  

  [ GitHub ]


  

  


# File 'activesupport/lib/active_support/reloader.rb', line 78



class_attribute :check, default: lambda { false }


  








  

    .executor   (rw)
  

  [ GitHub ]


  

  


# File 'activesupport/lib/active_support/reloader.rb', line 77



class_attribute :executor, default: Executor


  








  

    .executor?  ⇒ Boolean  (rw)
  

  [ GitHub ]


  

  


# File 'activesupport/lib/active_support/reloader.rb', line 77



class_attribute :executor, default: Executor


  







Class Method Details



  

    .after_class_unload(*args, &block)  
  



  

    

Registers a callback that will run immediately after the classes are unloaded.


  



  [ GitHub ]


  

  


# File 'activesupport/lib/active_support/reloader.rb', line 42



def self.after_class_unload(*args, &block)
  set_callback(:class_unload, :after, *args, &block)
end


  








  

    .before_class_unload(*args, &block)  
  



  

    

Registers a callback that will run immediately before the classes are unloaded.


  



  [ GitHub ]


  

  


# File 'activesupport/lib/active_support/reloader.rb', line 37



def self.before_class_unload(*args, &block)
  set_callback(:class_unload, *args, &block)
end


  








  

    .reload!  
  



  

    

Initiate a manual reload


  



  [ GitHub ]


  

  


# File 'activesupport/lib/active_support/reloader.rb', line 49



def self.reload!
  executor.wrap do
    new.tap do |instance|
      begin
        instance.run!
      ensure
        instance.complete!
      end
    end
  end
  prepare!
end


  








  

    .to_prepare(*args, &block)  
  



  

    

Registers a callback that will run once at application startup and every time the code is reloaded.


  



  [ GitHub ]


  

  


# File 'activesupport/lib/active_support/reloader.rb', line 32



def self.to_prepare(*args, &block)
  set_callback(:prepare, *args, &block)
end


  








  

    .wrap  
  



  

    

Run the supplied block as a work unit, reloading code as needed


  



  [ GitHub ]


  

  


# File 'activesupport/lib/active_support/reloader.rb', line 71



def self.wrap
  executor.wrap do
    super
  end
end


  







Instance Attribute Details



  

    #check   (rw)
  

  [ GitHub ]


  

  


# File 'activesupport/lib/active_support/reloader.rb', line 78



class_attribute :check, default: lambda { false }


  








  

    #check?  ⇒ Boolean  (rw)
  

  [ GitHub ]


  

  


# File 'activesupport/lib/active_support/reloader.rb', line 78



class_attribute :check, default: lambda { false }


  








  

    #executor   (rw)
  

  [ GitHub ]


  

  


# File 'activesupport/lib/active_support/reloader.rb', line 77



class_attribute :executor, default: Executor


  








  

    #executor?  ⇒ Boolean  (rw)
  

  [ GitHub ]


  

  


# File 'activesupport/lib/active_support/reloader.rb', line 77



class_attribute :executor, default: Executor


  







Instance Method Details



  

    #release_unload_lock!  
  



  

    

Release the unload lock if it has been previously obtained


  



  [ GitHub ]


  

  


# File 'activesupport/lib/active_support/reloader.rb', line 107



def release_unload_lock!
  if @locked
    @locked = false
    ActiveSupport::Dependencies.interlock.done_unloading
  end
end


  








  

    #require_unload_lock!  
  



  

    

Acquire the Dependencies::Interlock unload lock, ensuring it will be released automatically


  



  [ GitHub ]


  

  


# File 'activesupport/lib/active_support/reloader.rb', line 99



def require_unload_lock!
  unless @locked
    ActiveSupport::Dependencies.interlock.start_unloading
    @locked = true
  end
end