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1package thumbnail
2
3import "sync"
4
5var thumbnailLocks = struct {
6 sync.Mutex
7 locks map[string]*sync.Mutex
8}{
9 locks: make(map[string]*sync.Mutex),
10}
11
12// GetThumbnailLock returns a mutex for the given user
13func GetThumbnailLock(handle string) *sync.Mutex {
14 thumbnailLocks.Lock()
15 defer thumbnailLocks.Unlock()
16
17 if lock, exists := thumbnailLocks.locks[handle]; exists {
18 return lock
19 }
20
21 lock := &sync.Mutex{}
22 thumbnailLocks.locks[handle] = lock
23 return lock
24}