public override Stream AcquireLock()
{
if (m_stream == null)
{
try
{
using (CurrentAppender.SecurityContext.Impersonate(this))
{
string directoryFullName = Path.GetDirectoryName(m_filename);
if (!Directory.Exists(directoryFullName))
{
Directory.CreateDirectory(directoryFullName);
}
if (c_stream == null)
{
c_stream = ConcurrentStream.GetInstance(m_filename, m_append, FileAccess.Write, FileShare.Read);
c_stream.IsOpen = true;
}
m_stream = c_stream;
m_append = true;
}
}
catch (Exception e1)
{
CurrentAppender.ErrorHandler.Error("Unable to acquire lock on file " + m_filename + ". " + e1.Message);
}
}
return(m_stream);
}
public static ConcurrentStream GetInstance(string path, bool append, FileAccess access, FileShare share)
{
if (instance == null)
{
instance = new ConcurrentStream(path, append, access, share);
}
return(instance);
}