Make CollectionParent::generate_key() threadsafe

realm · May 15, 2023 · 1731af1 · 1731af1
1 parent 69814d7
commit 1731af1
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/src/realm/collection_parent.cpp b/src/realm/collection_parent.cpp
@@ -265,8 +265,10 @@ CollectionBasePtr CollectionParent::get_collection_ptr(ColKey col_key) const
 int64_t CollectionParent::generate_key(size_t sz) const
 {
     static std::mt19937 gen32;
+    static std::mutex mutex;
 
     int64_t key;
+    const std::lock_guard<std::mutex> lock(mutex);
     do {
         if (sz < 0x10) {
             key = int8_t(gen32());