调优性能

librf/src/counted_ptr.h

@@ -101,7 +101,7 @@ namespace resumef
 	private:
 		void _unlock()
 		{
-			if (_p != nullptr)
+			if (likely(_p != nullptr))
 			{
 				auto t = _p;
 				_p = nullptr;

librf/src/macro_def.inl

@@ -16,18 +16,18 @@
 #define root_state() (co_await ::resumef::get_root_state())
 #define current_task() (co_await ::resumef::get_current_task())
 
-#ifdef _MSC_VER
+#if defined(__clang__) || defined(__GNUC__)
 #ifndef likely
-#define likely(x) x
+#define likely(x) __builtin_expect(!!(x), 1)
 #endif // likely
 #ifndef unlikely
-#define unlikely(x) x
+#define unlikely(x) __builtin_expect(!!(x), 0)
 #endif // unlikely
-#else  // _MSC_VER
+#else  // defined(__clang__) || defined(__GNUC__)
 #ifndef likely
-#define likely(x) __builtin_expect(!!(x), 1)
+#define likely(x) x
 #endif // likely
 #ifndef unlikely
-#define unlikely(x) __builtin_expect(!!(x), 0)
+#define unlikely(x) x
 #endif // unlikely
-#endif // _MSC_VER
+#endif // defined(__clang__) || defined(__GNUC__)

librf/src/state.h

@@ -13,11 +13,11 @@ namespace resumef
 	public:
 		void lock() noexcept
 		{
-			++_count;
+			_count.fetch_add(1, std::memory_order_acq_rel);
 		}
 		void unlock()
 		{
-			if (--_count == 0)
+			if (unlikely(_count.fetch_sub(1, std::memory_order_acq_rel) == 1))
 			{
 				destroy_deallocate();
 			}