Ruby client updated

[redis.git] / client-libraries / ruby / lib / better_timeout.rb

diff --git a/client-libraries/ruby/lib/better_timeout.rb b/client-libraries/ruby/lib/better_timeout.rb
deleted file mode 100644 (file)
index 818909a..0000000
--- a/client-libraries/ruby/lib/better_timeout.rb
+++ /dev/null
@@ -1,191 +0,0 @@
-#--
-# = timeout.rb
-#
-# execution timeout
-#
-# = Copyright
-#
-# Copyright - (C) 2008  Evan Phoenix
-# Copyright:: (C) 2000  Network Applied Communication Laboratory, Inc.
-# Copyright:: (C) 2000  Information-technology Promotion Agency, Japan
-#
-#++
-#
-# = Description
-#
-# A way of performing a potentially long-running operation in a thread, and
-# terminating it's execution if it hasn't finished within fixed amount of
-# time.
-#
-# Previous versions of timeout didn't use a module for namespace. This version
-# provides both Timeout.timeout, and a backwards-compatible #timeout.
-#
-# = Synopsis
-#
-#   require 'timeout'
-#   status = Timeout::timeout(5) {
-#     # Something that should be interrupted if it takes too much time...
-#   }
-#
-
-require 'thread'
-
-module Timeout
-
-  ##
-  # Raised by Timeout#timeout when the block times out.
-
-  class Error<Interrupt
-  end
-
-  # A mutex to protect @requests
-  @mutex = Mutex.new
-
-  # All the outstanding TimeoutRequests
-  @requests = []
-
-  # Represents +thr+ asking for it to be timeout at in +secs+
-  # seconds. At timeout, raise +exc+.
-  class TimeoutRequest
-    def initialize(secs, thr, exc)
-      @left = secs
-      @thread = thr
-      @exception = exc
-    end
-
-    attr_reader :thread, :left
-
-    # Called because +time+ seconds have gone by. Returns
-    # true if the request has no more time left to run.
-    def elapsed(time)
-      @left -= time
-      @left <= 0
-    end
-
-    # Raise @exception if @thread.
-    def cancel
-      if @thread and @thread.alive?
-        @thread.raise @exception, "execution expired"
-      end
-
-      @left = 0
-    end
-
-    # Abort this request, ie, we don't care about tracking
-    # the thread anymore.
-    def abort
-      @thread = nil
-      @left = 0
-    end
-  end
-
-  def self.add_timeout(time, exc)
-
-    @controller ||= Thread.new do
-      while true
-        if @requests.empty?
-          sleep
-          next
-        end
-
-        min = nil
-
-        @mutex.synchronize do
-          min = @requests.min { |a,b| a.left <=> b.left }
-        end
-
-        slept_for = sleep(min.left)
-
-        @mutex.synchronize do
-          @requests.delete_if do |r|
-            if r.elapsed(slept_for)
-              r.cancel
-              true
-            else
-              false
-            end
-          end
-        end
-
-      end
-    end
-
-    req = TimeoutRequest.new(time, Thread.current, exc)
-
-    @mutex.synchronize do
-      @requests << req
-    end
-
-    @controller.run
-
-    return req
-  end
-
-  ##
-  # Executes the method's block. If the block execution terminates before +sec+
-  # seconds has passed, it returns true. If not, it terminates the execution
-  # and raises +exception+ (which defaults to Timeout::Error).
-  #
-  # Note that this is both a method of module Timeout, so you can 'include
-  # Timeout' into your classes so they have a #timeout method, as well as a
-  # module method, so you can call it directly as Timeout.timeout().
-  
-  def timeout(sec, exception=Error)
-    return yield if sec == nil or sec.zero?
-    raise ThreadError, "timeout within critical session" if Thread.critical
-
-    req = Timeout.add_timeout sec, exception
-    
-    begin
-      yield sec
-    ensure
-      req.abort
-    end
-  end
-
-  module_function :timeout
-
-end
-
-##
-# Identical to:
-#
-#   Timeout::timeout(n, e, &block).
-#
-# Defined for backwards compatibility with earlier versions of timeout.rb, see
-# Timeout#timeout.
-
-def timeout(n, e=Timeout::Error, &block) # :nodoc:
-  Timeout::timeout(n, e, &block)
-end
-
-##
-# Another name for Timeout::Error, defined for backwards compatibility with
-# earlier versions of timeout.rb.
-
-class Object
-  remove_const(:TimeoutError) if const_defined?(:TimeoutError)
-end
-TimeoutError = Timeout::Error # :nodoc:
-
-if __FILE__ == $0
-  p timeout(5) {
-    45
-  }
-  p timeout(5, TimeoutError) {
-    45
-  }
-  p timeout(nil) {
-    54
-  }
-  p timeout(0) {
-    54
-  }
-  p timeout(5) {
-    loop {
-      p 10
-      sleep 1
-    }
-  }
-end
-