Use RTM instructions (skylake+)

Utilities/sysinfo.cpp

@@ -46,5 +46,16 @@ std::string utils::get_system_info()
 #endif
 
 	fmt::append(result, "%s | %d Threads | %.2f GiB RAM", brand, num_proc, mem_total / (1024.0f * 1024 * 1024));
+
+	if (has_avx())
+	{
+		result += " | AVX";
+	}
+
+	if (has_rtm())
+	{
+		result += " | TSX";
+	}
+
 	return result;
 }

Utilities/sysinfo.h

@@ -28,7 +28,26 @@ namespace utils
 
 	inline bool has_rtm()
 	{
-		return get_cpuid(0, 0)[0] >= 0x7 && get_cpuid(7, 0)[1] & 0x800;
+		// Check RTM and MPX extensions in order to filter out TSX on Haswell CPUs
+		return get_cpuid(0, 0)[0] >= 0x7 && (get_cpuid(7, 0)[1] & 0x4800) == 0x4800;
+	}
+
+	inline bool transaction_enter()
+	{
+		while (true)
+		{
+			const auto status = _xbegin();
+
+			if (status == _XBEGIN_STARTED)
+			{
+				return true;
+			}
+
+			if (!(status & _XABORT_RETRY))
+			{
+				return false;
+			}
+		}
 	}
 
 	std::string get_system_info();