Update the comments

2018-03-31 22:08:27 +08:00 · 2018-03-31 22:08:27 +08:00 · f1b5e94799
parent bc164d6369
commit f1b5e94799
1 changed files with 1 additions and 0 deletions
--- a/SDWebImage/SDWebImagePrefetcher.m
+++ b/SDWebImage/SDWebImagePrefetcher.m
@ -11,6 +11,7 @@

@interface SDWebImagePrefetchToken () {
    @public
+    // Though current implementation, `SDWebImageManager` completion block is always on main queue. But however, there is no guarantee in docs. And we may introduce config to specify custom queue in the future.
    // These value are just used as incrementing counter, keep thread-safe using memory_order_relaxed for performance.
    atomic_ulong _skippedCount;
    atomic_ulong _finishedCount;