1 files changed, 0 insertions, 164 deletions
diff --git a/lib/rake/thread_pool.rb b/lib/rake/thread_pool.rb
deleted file mode 100644
index d2ac6e7ac2..0000000000
--- a/lib/rake/thread_pool.rb
+++ /dev/null
@@ -1,164 +0,0 @@
-require 'thread'
-require 'set'
-
-require 'rake/promise'
-
-module Rake
-
-  class ThreadPool # :nodoc: all
-
-    # Creates a ThreadPool object.  The +thread_count+ parameter is the size
-    # of the pool.
-    def initialize(thread_count)
-      @max_active_threads = [thread_count, 0].max
-      @threads = Set.new
-      @threads_mon = Monitor.new
-      @queue = Queue.new
-      @join_cond = @threads_mon.new_cond
-
-      @history_start_time = nil
-      @history = []
-      @history_mon = Monitor.new
-      @total_threads_in_play = 0
-    end
-
-    # Creates a future executed by the +ThreadPool+.
-    #
-    # The args are passed to the block when executing (similarly to
-    # Thread#new) The return value is an object representing
-    # a future which has been created and added to the queue in the
-    # pool. Sending #value to the object will sleep the
-    # current thread until the future is finished and will return the
-    # result (or raise an exception thrown from the future)
-    def future(*args, &block)
-      promise = Promise.new(args, &block)
-      promise.recorder = lambda { |*stats| stat(*stats) }
-
-      @queue.enq promise
-      stat :queued, :item_id => promise.object_id
-      start_thread
-      promise
-    end
-
-    # Waits until the queue of futures is empty and all threads have exited.
-    def join
-      @threads_mon.synchronize do
-        begin
-          stat :joining
-          @join_cond.wait unless @threads.empty?
-          stat :joined
-        rescue Exception => e
-          stat :joined
-          $stderr.puts e
-          $stderr.print "Queue contains #{@queue.size} items. " +
-            "Thread pool contains #{@threads.count} threads\n"
-          $stderr.print "Current Thread #{Thread.current} status = " +
-            "#{Thread.current.status}\n"
-          $stderr.puts e.backtrace.join("\n")
-          @threads.each do |t|
-            $stderr.print "Thread #{t} status = #{t.status}\n"
-            # 1.8 doesn't support Thread#backtrace
-            $stderr.puts t.backtrace.join("\n") if t.respond_to? :backtrace
-          end
-          raise e
-        end
-      end
-    end
-
-    # Enable the gathering of history events.
-    def gather_history          #:nodoc:
-      @history_start_time = Time.now if @history_start_time.nil?
-    end
-
-    # Return a array of history events for the thread pool.
-    #
-    # History gathering must be enabled to be able to see the events
-    # (see #gather_history). Best to call this when the job is
-    # complete (i.e. after ThreadPool#join is called).
-    def history                 # :nodoc:
-      @history_mon.synchronize { @history.dup }.
-        sort_by { |i| i[:time] }.
-        each { |i| i[:time] -= @history_start_time }
-    end
-
-    # Return a hash of always collected statistics for the thread pool.
-    def statistics              #  :nodoc:
-      {
-        :total_threads_in_play => @total_threads_in_play,
-        :max_active_threads => @max_active_threads,
-      }
-    end
-
-    private
-
-    # processes one item on the queue. Returns true if there was an
-    # item to process, false if there was no item
-    def process_queue_item      #:nodoc:
-      return false if @queue.empty?
-
-      # Even though we just asked if the queue was empty, it
-      # still could have had an item which by this statement
-      # is now gone. For this reason we pass true to Queue#deq
-      # because we will sleep indefinitely if it is empty.
-      promise = @queue.deq(true)
-      stat :dequeued, :item_id => promise.object_id
-      promise.work
-      return true
-
-      rescue ThreadError # this means the queue is empty
-      false
-    end
-
-    def safe_thread_count
-      @threads_mon.synchronize do
-        @threads.count
-      end
-    end
-
-    def start_thread # :nodoc:
-      @threads_mon.synchronize do
-        next unless @threads.count < @max_active_threads
-
-        t = Thread.new do
-          begin
-            while safe_thread_count <= @max_active_threads
-              break unless process_queue_item
-            end
-          ensure
-            @threads_mon.synchronize do
-              @threads.delete Thread.current
-              stat :ended, :thread_count => @threads.count
-              @join_cond.broadcast if @threads.empty?
-            end
-          end
-        end
-
-        @threads << t
-        stat(
-          :spawned,
-          :new_thread   => t.object_id,
-          :thread_count => @threads.count)
-        @total_threads_in_play = @threads.count if
-          @threads.count > @total_threads_in_play
-      end
-    end
-
-    def stat(event, data=nil) # :nodoc:
-      return if @history_start_time.nil?
-      info = {
-        :event  => event,
-        :data   => data,
-        :time   => Time.now,
-        :thread => Thread.current.object_id,
-      }
-      @history_mon.synchronize { @history << info }
-    end
-
-    # for testing only
-
-    def __queue__ # :nodoc:
-      @queue
-    end
-  end
-
-end