Update CHANGELOG for v0.3.9

CHANGELOG.md

@@ -1,7 +1,27 @@
 
+<a name="v0.3.9"></a>
+## [v0.3.9](https://github.com/prologic/bitcask/compare/v0.3.8...v0.3.9) (2020-11-17)
+
+### Bug Fixes
+
+* Fix a race condition around .Close() and .Sync()
+
+
+<a name="v0.3.8"></a>
+## [v0.3.8](https://github.com/prologic/bitcask/compare/v0.3.7...v0.3.8) (2020-11-17)
+
+### Updates
+
+* Update CHANGELOG for v0.3.8
+
+
 <a name="v0.3.7"></a>
 ## [v0.3.7](https://github.com/prologic/bitcask/compare/v0.3.6...v0.3.7) (2020-11-17)
 
+### Updates
+
+* Update CHANGELOG for v0.3.7
+
 
 <a name="v0.3.6"></a>
 ## [v0.3.6](https://github.com/prologic/bitcask/compare/v0.3.5...v0.3.6) (2020-11-17)

bitcask.go

@@ -87,7 +87,10 @@ func (b *Bitcask) Stats() (stats Stats, err error) {
 // Close() as this is the only way to cleanup the lock held by the open
 // database.
 func (b *Bitcask) Close() error {
+	b.mu.RLock()
+
 	defer func() {
+		b.mu.RUnlock()
 		b.Flock.Unlock()
 		os.Remove(b.Flock.Path())
 	}()
@@ -107,6 +110,8 @@ func (b *Bitcask) Close() error {
 
 // Sync flushes all buffers to disk ensuring all data is written
 func (b *Bitcask) Sync() error {
+	b.mu.RLock()
+	defer b.mu.RUnlock()
 	return b.curr.Sync()
 }