set alias for Thread during eval execution

(cherry picked from commit 56e1a3f)

bin/rdebug-ide

@@ -131,6 +131,14 @@ else
   Debugger::PROG_SCRIPT = $0
 end
 
+if RUBY_VERSION < "1.9"
+   lib_path = File.expand_path(File.dirname(__FILE__) + "/../lib/")
+   $: << lib_path unless $:.include? lib_path
+   require 'ruby-debug-ide/thread_alias.rb'
+else
+  require_relative '../lib/ruby-debug-ide/thread_alias'
+end
+
 if options.dispatcher_port != -1
   ENV['IDE_PROCESS_DISPATCHER'] = options.dispatcher_port.to_s
   if RUBY_VERSION < "1.9"

lib/ruby-debug-ide/command.rb

@@ -128,9 +128,18 @@ def debug_eval(str, b = get_binding)
         to_inspect = Command.unescape_incoming(str)
         max_time = Debugger.evaluation_timeout
         @printer.print_debug("Evaluating %s with timeout after %i sec", str, max_time)
+
+        Debugger::TimeoutHandler.do_thread_alias
+
+        eval_result = nil
+
         timeout(max_time) do
-          eval(to_inspect, b)
+          eval_result = eval(to_inspect, b)
         end
+
+        Debugger::TimeoutHandler.undo_thread_alias
+
+        return eval_result
       rescue StandardError, ScriptError => e
         @printer.print_exception(e, @state.binding) 
         throw :debug_error

lib/ruby-debug-ide/thread-alias/alias_thread.rb

@@ -0,0 +1,2 @@
+OldThread = Thread
+Thread = Debugger::DebugThread

lib/ruby-debug-ide/thread-alias/unalias_thread.rb

@@ -0,0 +1 @@
+Thread = OldThread

lib/ruby-debug-ide/thread_alias.rb

@@ -0,0 +1,13 @@
+module Debugger
+  module TimeoutHandler
+    class << self
+      def do_thread_alias
+        load File.expand_path(File.dirname(__FILE__) + '/thread-alias/alias_thread.rb')
+      end
+
+      def undo_thread_alias
+        load File.expand_path(File.dirname(__FILE__) + '/thread-alias/unalias_thread.rb')
+      end
+    end
+  end
+end