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ðŸ“„ application.rb(24.53 KB)
ðŸ“„ backtrace.rb(896 B)
ðŸ“„ clean.rb(2.03 KB)
ðŸ“„ cloneable.rb(448 B)
ðŸ“„ cpu_counter.rb(2.33 KB)
ðŸ“„ default_loader.rb(265 B)
ðŸ“„ dsl_definition.rb(5.48 KB)
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ðŸ“ ext
ðŸ“„ file_creation_task.rb(699 B)
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ðŸ“„ file_task.rb(1.5 KB)
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ðŸ“„ file_utils_ext.rb(3.84 KB)
ðŸ“„ invocation_chain.rb(1.19 KB)
ðŸ“„ invocation_exception_mixin.rb(461 B)
ðŸ“„ late_time.rb(295 B)
ðŸ“„ linked_list.rb(2.77 KB)
ðŸ“ loaders
ðŸ“„ multi_task.rb(345 B)
ðŸ“„ name_space.rb(702 B)
ðŸ“„ packagetask.rb(6.02 KB)
ðŸ“„ phony.rb(381 B)
ðŸ“„ private_reader.rb(394 B)
ðŸ“„ promise.rb(2.28 KB)
ðŸ“„ pseudo_status.rb(405 B)
ðŸ“„ rake_module.rb(1.49 KB)
ðŸ“„ rake_test_loader.rb(505 B)
ðŸ“„ rule_recursion_overflow_error.rb(382 B)
ðŸ“„ scope.rb(898 B)
ðŸ“„ task.rb(12.74 KB)
ðŸ“„ task_argument_error.rb(149 B)
ðŸ“„ task_arguments.rb(2.41 KB)
ðŸ“„ task_manager.rb(10.01 KB)
ðŸ“„ tasklib.rb(165 B)
ðŸ“„ testtask.rb(5.19 KB)
ðŸ“„ thread_history_display.rb(1.13 KB)
ðŸ“„ thread_pool.rb(4.67 KB)
ðŸ“„ trace_output.rb(575 B)
ðŸ“„ version.rb(208 B)
ðŸ“„ win32.rb(1.52 KB)

Editing: promise.rb

# frozen_string_literal: true
module Rake

# A Promise object represents a promise to do work (a chore) in the
  # future. The promise is created with a block and a list of
  # arguments for the block. Calling value will return the value of
  # the promised chore.
  #
  # Used by ThreadPool.
  #
  class Promise               # :nodoc: all
    NOT_SET = Object.new.freeze # :nodoc:

attr_accessor :recorder

# Create a promise to do the chore specified by the block.
    def initialize(args, &block)
      @mutex = Mutex.new
      @result = NOT_SET
      @error = NOT_SET
      @args = args
      @block = block
    end

# Return the value of this promise.
    #
    # If the promised chore is not yet complete, then do the work
    # synchronously. We will wait.
    def value
      unless complete?
        stat :sleeping_on, item_id: object_id
        @mutex.synchronize do
          stat :has_lock_on, item_id: object_id
          chore
          stat :releasing_lock_on, item_id: object_id
        end
      end
      error? ? raise(@error) : @result
    end

# If no one else is working this promise, go ahead and do the chore.
    def work
      stat :attempting_lock_on, item_id: object_id
      if @mutex.try_lock
        stat :has_lock_on, item_id: object_id
        chore
        stat :releasing_lock_on, item_id: object_id
        @mutex.unlock
      else
        stat :bailed_on, item_id: object_id
      end
    end

private

# Perform the chore promised
    def chore
      if complete?
        stat :found_completed, item_id: object_id
        return
      end
      stat :will_execute, item_id: object_id
      begin
        @result = @block.call(*@args)
      rescue Exception => e
        @error = e
      end
      stat :did_execute, item_id: object_id
      discard
    end

# Do we have a result for the promise
    def result?
      !@result.equal?(NOT_SET)
    end

# Did the promise throw an error
    def error?
      !@error.equal?(NOT_SET)
    end

# Are we done with the promise
    def complete?
      result? || error?
    end

# free up these items for the GC
    def discard
      @args = nil
      @block = nil
    end

# Record execution statistics if there is a recorder
    def stat(*args)
      @recorder.call(*args) if @recorder
    end

end

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Editing: promise.rb

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