rake.rb in drake-0.8.2.1.0.7

- old
+ new

@@ -27,11 +27,11 @@
 #
 # This is the main file for the Rake application.  Normally it is referenced
 # as a library via a require statement, but it can be distributed
 # independently as an application.
 
-RAKEVERSION = '0.8.2.1.0.6'
+RAKEVERSION = '0.8.2.1.0.7'
 
 require 'rbconfig'
 require 'getoptlong'
 require 'fileutils'
 require 'singleton'
@@ -593,17 +593,23 @@
         if application.options.trace and application.num_threads == 1
           puts "** Invoke #{name} #{format_trace_flags}"
         end
         return if @already_invoked
         @already_invoked = true
+
+        if application.options.randomize
+          @prerequisites = @prerequisites.sort_by { rand }
+        end
+
         prereqs = 
           if application.num_threads == 1
             invoke_prerequisites(task_args, new_chain)
             nil
           else
             invoke_prerequisites_parallel(task_args, new_chain)
           end
+
         if needed?
           if application.num_threads == 1
             execute(task_args) 
           else
             # gather tasks for batch execution
@@ -2274,12 +2280,18 @@
           lambda { |value| eval(value) }            
         ],
         ['--threads', '-j N', "Specifies the number of threads to run simultaneously.",
           lambda { |value| self.num_threads = value.to_i }
         ],
-        #['--fork', '-k', "When --threads=N given, run each thread in a separate process.",
-        #  lambda { options.fork = true }
-        #],
+        ['--rand[=SEED]', "Randomize task prerequisite orders",
+          lambda { |value|
+            MultiTask.class_eval { remove_method(:invoke_prerequisites) }
+            options.randomize = true
+            if value
+              srand(value.to_i)
+            end
+          }
+        ],
         ['--libdir', '-I LIBDIR', "Include LIBDIR in the search path for required modules.",
           lambda { |value| $:.push(value) }
         ],
         ['--prereqs', '-P', "Display the tasks and dependencies, then exit.",
           lambda { |value| options.show_prereqs = true }