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我正在开发 Rails 3.2.9 app 。在这里,我们必须执行选定的测试用例。这是通过调用一个名为 execute_testcases 的操作来完成的。互斥锁用于避免不同执行中的冲突。但突然执行停止工作,它只是弹出一个 cmd 窗口 n 将其关闭(打开 cmd 是代码的一部分,但执行完成后它会关闭)。有时在浏览器中我会收到此错误

Attempt to unlock a mutex which is locked by another thread
WEBrick/1.3.1 (Ruby/1.9.3/2012-11-10) at localhost:3000

当我跟踪执行代码时,我看到它要么停在第 1 点或第 2 点(在下面的代码中提到)所以我只添加了所需的代码供您参考。如果您需要更多代码,请告诉我..

相同的代码在其他机器上也能正常工作。就在我的机器上,我得到了这个错误。请帮我解决这个错误

帐户控制器.rb:

 @@lock = Mutex.new
 @@another_test_running = false

 def execute_testcases
    file_names = []
    originalfile_filewithtime = []
    original_file_map = {}
    originalfile_filewithtime = params[:excelfile]
    for value in originalfile_filewithtime
      original_file, file_with_time = value.split(',')
      original_file_map[file_with_time] = original_file
      file_names << file_with_time
    end
    copy_selected_excel_sheets_to_isaf(file_names)
    i = 0
    while(@@another_test_running && i < MAX_TIMEOUT) do
      sleep 1
      i = i + 1
    end
    @@another_test_running = true
    puts "STARTED EXECUTING #{file_names}"
    @@lock.synchronize do ###### POINT 1
      update_master_suite_file(file_names)
      Dir.chdir(SAF_DIR)
      system("START cmd /C ant ^| tee #{self.current_user.username}.log 2>&1")
      sleep 15 #To avoid collision with other SAF executions
      @@another_test_running = false
   end
   wait_for_test_execution_to_complete(900) ###### POINT 2
   show_output(file_names, original_file_map)

    render :update do |page|
      page.replace_html :subject_list, :partial => 'show_output', :locals => {:new_file_map => @new_file_map}
      page.visual_effect :highlight,  'subject_list', :duration => 2
    end
  end  

 def wait_for_test_execution_to_complete(timeout)
   test_exec_log_file = SAF_DIR + self.current_user.username + ".log"
   i = 0
   text =  File.exist?(test_exec_log_file)? File.read(test_exec_log_file) : "" 
   while(!text.include?("stop-server:") && i < timeout)#### POINT 2
     sleep 2
     i = i + 2
     text =  File.exist?(test_exec_log_file)? File.read(test_exec_log_file) : ""
   end
   #Further, wait to see BUILD SUCCESSFUL or FAILED message
   j = 0
   while(!(text.include?("BUILD SUCCESSFUL") || text.include?("BUILD FAILED")) && j < 30 )
     sleep 2
     j = j + 2
     text =  File.exist?(test_exec_log_file)? File.read(test_exec_log_file) : ""
   end
   #delete the log file 
   File.delete(test_exec_log_file)
end
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