initial version of lockfree::HashMap, methods operator[] and put are for now in the interface

data_structures/map/hashmap.hpp

@@ -0,0 +1,35 @@
+#ifndef MEMGRAPH_DATA_STRUCTURES_LOCKFREE_HASHMAP_HPP
+#define MEMGRAPH_DATA_STRUCTURES_LOCKFREE_HASHMAP_HPP
+
+#include <unordered_map>
+
+#include "threading/sync/lockable.hpp"
+#include "threading/sync/spinlock.hpp"
+
+namespace lockfree
+{
+
+template <class K, class V>
+class HashMap: Lockable<SpinLock> {
+public:
+    V operator[](const K& key)
+    {
+        auto guard = acquire();
+
+        return hashmap[key];
+    }
+
+    void put(const K& key, const K& value)
+    {
+        auto quard = acquire();
+
+        hashmap[key] = value;
+    }
+
+private:
+    std::unordered_map<K, V> hashmap;
+};
+
+}
+
+#endif

test/dynamic_bitset.cpp

@@ -4,11 +4,10 @@
 TEST_CASE("Dynamic bitset basic functionality")
 {
     DynamicBitset<> db;
-    db.set(2222255555, 1);
+    db.set(222555, 1);
-    bool value = db.at(2222255555, 1);
+    bool value = db.at(222555, 1);
     REQUIRE(value == true);
 
-
     db.set(32, 1);
     value = db.at(32, 1);
     REQUIRE(value == true);

test/lockfree_hashmap.cpp

@@ -0,0 +1,10 @@
+#include "catch.hpp"
+#include "data_structures/map/hashmap.hpp"
+
+TEST_CASE("Lockfree HashMap basic functionality")
+{
+    lockfree::HashMap<int, int> hashmap;
+    // hashmap[32] = 10;
+    hashmap.put(32, 10);
+    REQUIRE(hashmap[32] == 10);
+}