grumble, pkg/freezer: more stable freezing on Windows.

freeze_unix.go

@@ -0,0 +1,49 @@
+// Copyright (c) 2012 The Grumble Authors
+// The use of this source code is goverened by a BSD-style
+// license that can be found in the LICENSE-file.
+
+// +build !windows
+
+package main
+
+func (server *Server) freezeToFile() (err error) {
+	// Close the log file, if it's open
+	if server.freezelog != nil {
+		err = server.freezelog.Close()
+		if err != nil {
+			return err
+		}
+	}
+
+	// Make sure the whole server is synced to disk
+	fs, err := server.Freeze()
+	if err != nil {
+		return err
+	}
+	f, err := ioutil.TempFile(filepath.Join(Args.DataDir, "servers", strconv.FormatInt(server.Id, 10)), ".main.fz_")
+	if err != nil {
+		return err
+	}
+	buf, err := proto.Marshal(fs)
+	if err != nil {
+		return err
+	}
+	_, err = f.Write(buf)
+	if err != nil {
+		return err
+	}
+	err = f.Sync()
+	if err != nil {
+		return err
+	}
+	err = f.Close()
+	if err != nil {
+		return err
+	}
+	err = os.Rename(f.Name(), filepath.Join(Args.DataDir, "servers", strconv.FormatInt(server.Id, 10), "main.fz"))
+	if err != nil {
+		return err
+	}
+
+	return nil
+}