[cache] Use atomic writes in clear()

To help TSan.
2018-09-27 16:54:23 -04:00 · 2018-09-27 16:54:23 -04:00 · 305468708d
parent 9e9a36ee65
commit 305468708d
1 changed files with 4 additions and 1 deletions
--- a/src/hb-cache.hh
+++ b/src/hb-cache.hh
@ -42,7 +42,10 @@ struct hb_cache_t
  inline void fini (void) {}

  inline void clear (void)
-  { memset (values, 255, sizeof (values)); }
+  {
+    for (unsigned i = 0; i < ARRAY_LENGTH (values); i++)
+      values[i].set_relaxed (-1);
+  }

  inline bool get (unsigned int key, unsigned int *value) const
  {