* lib/shell/process-controller.rb: fix thread synchronization problem for [ruby-dev:30477].

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@12003 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 5 insertions, 3 deletions

diff --git a/lib/shell/process-controller.rb b/lib/shell/process-controller.rb
index f74abfd686..8929805506 100644
--- a/lib/shell/process-controller.rb
+++ b/lib/shell/process-controller.rb
@@ -246,9 +246,11 @@ class Shell
 	    redo
 	  end
 	  Thread.exclusive do
-	    terminate_job(command)
-	    @job_condition.signal
-	    command.notify "job(%id) finish.", @shell.debug?
+	    @job_monitor.synchronize do 
+	      terminate_job(command)
+	      @job_condition.signal
+	      command.notify "job(%id) finish.", @shell.debug?
+	    end
 	  end
 	end
       }