/// <summary>
/// Defeats the protocol by removing the file and replacing it with one that contains the
/// new process identifier -
/// </summary>
/// <param name="sem">A FileSempahore</param>
/// <returns>True if successfull.</returns>
private static bool ForceLock(ref FileSemaphore sem)
{
if (sem.RemoveLock() == false)
{
return(false);
}
return(Lock(ref sem));
}
/// <summary>
/// Lock a semaphore file. You can only UnLock a semaphore that either does not exists, or that your process
/// has previously Locked.
/// </summary>
/// <param name="sem">A semaphore file (context)</param>
/// <returns>True if the semaphore file was released.</returns>
public static bool UnLock(ref FileSemaphore sem)
{
// STEP: If the semaphore file is not there, then the resource is unlocked.
if (sem.IsLocked() == false)
{
return(true);
}
// STEP: The general public can ONLY remove a semaphore file IF it is theirs
if (sem.iSemCode == sem.GetSemaphore())
{
return(sem.RemoveLock());
}
// Otherwise the user CANNOT unlock it!
return(false);
}
/// <summary>
/// Should not be used. Here just in case things go VERY wrong.
/// </summary>
/// <returns></returns>
public bool RemoveLocks()
{
return(fSem.RemoveLock());
}
