lock the Disjoint Pool bucket before accessing its internals

Author: bratpiorka

test/pools/disjoint_pool.cpp

@@ -138,6 +138,8 @@ TEST_F(test, internals) {
     EXPECT_NE(bucket, nullptr);
 
     // check bucket stats
+    // NOTE: we have to lock the bucket to properly access its internals
+    utils_mutex_lock(&bucket->bucket_lock);
     EXPECT_EQ(bucket->alloc_count, 1);
 
     // first allocation will always use external memory (newly added to the
@@ -160,6 +162,8 @@ TEST_F(test, internals) {
     EXPECT_EQ(slab->chunks[1], false);
     EXPECT_EQ(slab->first_free_chunk_idx, 1);
 
+    utils_mutex_unlock(&bucket->bucket_lock);
+
     // TODO:
     // * multiple alloc + free from single bucket
     // * alignments