1 files changed, 122 insertions, 0 deletions
diff --git a/ruby_1_8_6/lib/timeout.rb b/ruby_1_8_6/lib/timeout.rb
new file mode 100644
index 0000000000..5a99c28092
--- /dev/null
+++ b/ruby_1_8_6/lib/timeout.rb
@@ -0,0 +1,122 @@
+#--
+# = timeout.rb
+#
+# execution timeout
+#
+# = Copyright
+#
+# 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...
+#   }
+#
+
+module Timeout
+
+  ##
+  # Raised by Timeout#timeout when the block times out.
+
+  class Error < Interrupt
+  end
+  class ExitException < ::Exception # :nodoc:
+  end
+
+  THIS_FILE = /\A#{Regexp.quote(__FILE__)}:/o
+  CALLER_OFFSET = ((c = caller[0]) && THIS_FILE =~ c) ? 1 : 0
+
+  ##
+  # 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, klass = nil)
+    return yield if sec == nil or sec.zero?
+    raise ThreadError, "timeout within critical session" if Thread.critical
+    exception = klass || Class.new(ExitException)
+    begin
+      x = Thread.current
+      y = Thread.start {
+        sleep sec
+        x.raise exception, "execution expired" if x.alive?
+      }
+      yield sec
+      #    return true
+    rescue exception => e
+      rej = /\A#{Regexp.quote(__FILE__)}:#{__LINE__-4}\z/o
+      (bt = e.backtrace).reject! {|m| rej =~ m}
+      level = -caller(CALLER_OFFSET).size
+      while THIS_FILE =~ bt[level]
+        bt.delete_at(level)
+        level += 1
+      end
+      raise if klass            # if exception class is specified, it
+                                # would be expected outside.
+      raise Error, e.message, e.backtrace
+    ensure
+      y.kill if y and y.alive?
+    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 = nil, &block) # :nodoc:
+  Timeout::timeout(n, e, &block)
+end
+
+##
+# Another name for Timeout::Error, defined for backwards compatibility with
+# earlier versions of timeout.rb.
+
+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
+