The Tor Browser / file revision

 function run_test() {

   set_process_running_environment();

   var file = get_test_program("TestQuickReturn");

   var thread = Components.classes["@mozilla.org/thread-manager;1"]

                          .getService().currentThread;

   for (var i = 0; i < 1000; i++) {

     var process = Components.classes["@mozilla.org/process/util;1"]

                           .createInstance(Components.interfaces.nsIProcess);

     process.init(file);

     process.run(false, [], 0);

     try {

       process.kill();

     }

     catch (e) { }

     // We need to ensure that we process any events on the main thread -

     // this allow threads to clean up properly and avoid out of memory

     // errors during the test.

     while (thread.hasPendingEvents())

       thread.processNextEvent(false);

   }

 }