nobu	2017-04-05 10:36:21 +0900 (Wed, 05 Apr 2017)

  New Revision: 58251

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=58251

  Log:
    default.mspec: job server
    
    * spec/default.mspec: override MSpecScript#cores by the tokens
      from the parent make job server.

  Modified files:
    trunk/spec/default.mspec
Index: spec/default.mspec
===================================================================
--- spec/default.mspec	(revision 58250)
+++ spec/default.mspec	(revision 58251)
@@ -24,3 +24,28 @@ class MSpecScript https://github.com/ruby/ruby/blob/trunk/spec/default.mspec#L24
     --
   ]
 end
+
+class MSpecScript
+  if /(?:\A|\s)--jobserver-(?:auth|fds)=(\d+),(\d+)/ =~ ENV["MAKEFLAGS"]
+    begin
+      r = IO.for_fd($1.to_i(10), "rb", autoclose: false)
+      w = IO.for_fd($2.to_i(10), "wb", autoclose: false)
+    rescue
+      r.close if r
+    else
+      jobtokens = r.read_nonblock(1024)
+      cores = jobtokens.size
+      if cores > 0
+        jobserver = w
+        at_exit {
+          jobserver.print(jobtokens)
+          jobserver.close
+        }
+      end
+      remove_method :cores
+      define_method(:cores) do
+        cores
+      end
+    end
+  end
+end

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