services.window(4)                                       services.window(4)




 NAME    [Toc]    [Back]
      services.window - file containing applications and their associated
      memory window id

 DESCRIPTION    [Toc]    [Back]
      The files /etc/services.window is used by applications using memory
      windows.

      Each line in the /etc/services.window file associates an application
      with a memory window id.  A line in the /etc/services.window file
      cannot start with a space or tab.  The format is a unique name,
      defining the application, followed by a space/tab, followed by a
      unique window_id.  See the sample file in EXAMPLES.

      Memory windows allows for the starting of a process in a unique or
      existing memory window where it can create and share objects with
      other applications in the same memory window.

      The creation of memory windows removes the system wide restriction on
      shared resources.  Without memory windows, 32-bit processes were
      limited to 1.75 gigabytes of shared resources.  Each memory window
      allows for the definition of a unique 1 gigabyte quadrant and since
      multiple memory windows can be defined in a system, the system total
      for shared resources can exceed the 1.75 gigabyte limitation for 32
      bit processes.

      The definition of a memory window is only available for 32-bit
      processes.

      The /etc/services.window file provides a central place for memory
      window applications to associate their memory window ids.  In the
      event there are any collisions, only a change in /etc/services.window
      is necessary to select another memory window for the entire
      application.  If /etc/services.window is not used, and user
      applications hard code window id's in their startup scripts,
      collisions are not easily detected or easily fixed.

      A memory window application uses the command getmemwindow(1M) to
      extract the application's window_id from the /etc/services.window
      file, and then passes that id to the setmemwindow(1M).

      Using the same window id places applications in the same memory
      window.

 EXAMPLE    [Toc]    [Back]
      Below is a example /etc/services.window file.

      # /etc/services.window
      #
      application1  20
      application2  30



 Hewlett-Packard Company            - 1 -   HP-UX 11i Version 2: August 2003






 services.window(4)                                       services.window(4)




      application3  40

 AUTHOR    [Toc]    [Back]
      services.window was developed by HP.

 FILES    [Toc]    [Back]
      /etc/services.window          File containing applications' associated
                                    window id.

 SEE ALSO    [Toc]    [Back]
      setmemwindow(1M), getmemwindow(1M), 11.0 Memory Window White Paper.


 Hewlett-Packard Company            - 2 -   HP-UX 11i Version 2: August 2003