include/wvlockdev.h

   1 /* -*- Mode: C++ -*-
   2  * Worldvisions Weaver Software:
   3  *   Copyright (C) 1997-2002 Net Integration Technologies, Inc.
   4  *
   5  * Some handy functions to create/remove /var/lock lockfiles.
   6  */
   7 #ifndef __WVLOCKDEV_H
   8 #define __WVLOCKDEV_H
   9
  10 #include "wvstring.h"
  11
  12 /**
  13  * Class to handle Lock files - useful for WvDial and other places where we
  14  * need to guarantee exclusive access to a file or device.  Creates/Removes
  15  * lockfiles in /var/lock.
  16  */
  17 class WvLockDev
  18 {
  19     WvString devicename, filename;
  20     int lock_count;
  21 public:
  22     WvLockDev(WvString _devicename);
  23     ~WvLockDev();
  24
  25     bool lock();
  26     void unlock();
  27     bool islocked() const
  28        { return lock_count != 0; }
  29 };
  30
  31 #endif // __WVLOCKDEV_H