internal static bool Read(string filename, ReadHandler handler, VoidDelegate onFail = null)
        {
            if (!File.Exists(filename))
            {
                return(false);
            }

            try
            {
                using (Stream stream = File.Open(filename, FileMode.Open, FileAccess.Read, FileShare.Read))
                    using (SerializationReader reader = new SerializationReader(stream))
                    {
                        handler(reader);
                        return(true);
                    }
            }
            catch (Exception e)
            {
                onFail?.Invoke();

                try
                {
                    GeneralHelper.CreateBackup(filename);
                }
                catch { }

                ErrorSubmission.Submit(new OsuError(e)
                {
                    Feedback = "database-corrupt"
                });
                return(false);
            }
        }
 internal static bool Write(string filename, WriteHandler handler)
 {
     try
     {
         using (SafeWriteStream stream = new SafeWriteStream(filename))
             using (SerializationWriter writer = new SerializationWriter(stream))
             {
                 try
                 {
                     handler(writer);
                     return(true);
                 }
                 catch
                 {
                     stream.Abort();
                     throw;
                 }
             }
     }
     catch (Exception e)
     {
         ErrorSubmission.Submit(new OsuError(e)
         {
             Feedback = "database-entry"
         });
         return(false);
     }
 }
        /// <summary>
        /// Saves user settings and database data to disk.
        /// </summary>
        internal bool Save()
        {
            try
            {
                ConfigManager.SaveConfig();

                BeatmapManager.DatabaseSerialize();
                PresenceCache.DatabaseSerialize();

                CollectionManager.SaveToDisk();
                ScoreManager.SaveToDisk();
                return(true);
            }
            catch (Exception e)
            {
                ErrorSubmission.Submit(new OsuError(e)
                {
                    Feedback = "background-save"
                });
                return(false);
            }
            finally
            {
                lastSave        = GameBase.Time;
                modeChangeCount = 0;
            }
        }