log: add SetOutput method on Logger

Fixes golang#9629 Change-Id: I66091003b97742ca6d857fe51d609833ab727216 Reviewed-on: https://go-review.googlesource.com/3023 Reviewed-by: Rob Pike <[email protected]>
AlexandrSalin · Jan 30, 2015 · 56ba3fb · 56ba3fb
1 parent 7980779
commit 56ba3fb
Showing 1 changed file with 7 additions and 0 deletions.
diff --git a/src/log/log.go b/src/log/log.go
@@ -60,6 +60,13 @@ func New(out io.Writer, prefix string, flag int) *Logger {
 	return &Logger{out: out, prefix: prefix, flag: flag}
 }
 
+// SetOutput sets the output destination for the logger.
+func (l *Logger) SetOutput(w io.Writer) {
+	l.mu.Lock()
+	defer l.mu.Unlock()
+	l.out = w
+}
+
 var std = New(os.Stderr, "", LstdFlags)
 
 // Cheap integer to fixed-width decimal ASCII.  Give a negative width to avoid zero-padding.