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Telegram/lib_crl/crl/winapi/crl_winapi_semaphore.h

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+// This file is part of Desktop App Toolkit,
+// a set of libraries for developing nice desktop applications.
+//
+// For license and copyright information please follow this link:
+// https://github.com/desktop-app/legal/blob/master/LEGAL
+//
+#pragma once
+
+#include <crl/common/crl_common_config.h>
+
+#ifdef CRL_USE_WINAPI
+
+#include <memory>
+
+namespace crl {
+
+class semaphore {
+public:
+	semaphore() : _handle(implementation::create()) {
+	}
+	semaphore(const semaphore &other) = delete;
+	semaphore &operator=(const semaphore &other) = delete;
+	semaphore(semaphore &&other) noexcept
+	: _handle(std::move(other._handle)) {
+	}
+	semaphore &operator=(semaphore &&other) noexcept {
+		_handle = std::move(other._handle);
+		return *this;
+	}
+
+	void acquire();
+	void release();
+
+private:
+	// Hide WinAPI HANDLE
+	struct implementation {
+		using pointer = void*;
+		static pointer create();
+		void operator()(pointer value);
+	};
+	std::unique_ptr<implementation::pointer, implementation> _handle;
+
+};
+
+} // namespace crl
+
+#endif // CRL_USE_WINAPI