From 228f699fabb9962c13e116e3b7e57c11b7c77b72 Mon Sep 17 00:00:00 2001
From: Alexandre Fiori <fiorix@gmail.com>
Date: Fri, 21 Nov 2014 07:46:13 -0500
Subject: [PATCH] Fix for calling concurrent Date and sendError

For some reason I used Lock instead of RLock for Date. That's wrong.
---
 db.go | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/db.go b/db.go
index 5cefb42..5417e23 100644
--- a/db.go
+++ b/db.go
@@ -263,8 +263,8 @@ func (db *DB) renameFile(name string) error {
 // Date returns the UTC date the database file was last modified.
 // If no database file has been opened the behaviour of Date is undefined.
 func (db *DB) Date() time.Time {
-	db.mu.Lock()
-	defer db.mu.Unlock()
+	db.mu.RLock()
+	defer db.mu.RUnlock()
 	return db.lastUpdated
 }
 
@@ -287,8 +287,8 @@ func (db *DB) NotifyError() (errChan <-chan error) {
 }
 
 func (db *DB) sendError(err error) {
-	db.mu.Lock()
-	defer db.mu.Unlock()
+	db.mu.RLock()
+	defer db.mu.RUnlock()
 	if db.closed {
 		return
 	}