prevent copying various ffi wrapper classes (#48195)

Author: jkarneges

src/core/eventloop.h

@@ -32,6 +32,10 @@ class EventLoop
 	EventLoop(int capacity);
 	~EventLoop();
 
+	// disable copying
+	EventLoop(const EventLoop &) = delete;
+	EventLoop & operator=(const EventLoop &) = delete;
+
 	std::optional<int> step();
 	int exec();
 	void exit(int code);

src/core/tcplistener.h

@@ -31,6 +31,10 @@ class TcpListener
 	TcpListener();
 	~TcpListener();
 
+	// disable copying
+	TcpListener(const TcpListener &) = delete;
+	TcpListener & operator=(const TcpListener &) = delete;
+
 	bool bind(const QHostAddress &addr, uint16_t port);
 	std::tuple<QHostAddress, uint16_t> localAddress() const;
 	std::unique_ptr<TcpStream> accept();

src/core/tcpstream.h

@@ -34,6 +34,10 @@ class TcpStream : public ReadWrite
 	TcpStream();
 	~TcpStream();
 
+	// disable copying
+	TcpStream(const TcpStream &) = delete;
+	TcpStream & operator=(const TcpStream &) = delete;
+
 	// returns true if connection starting, false on error
 	bool connect(const QHostAddress &addr, uint16_t port);
 

src/core/timerwheel.h

@@ -42,6 +42,10 @@ class TimerWheel
 	TimerWheel(int capacity);
 	~TimerWheel();
 
+	// disable copying
+	TimerWheel(const TimerWheel &) = delete;
+	TimerWheel & operator=(const TimerWheel &) = delete;
+
 	// returns <0 if no capacity
 	int add(quint64 expires, size_t userData);
 

src/core/unixlistener.h

@@ -31,6 +31,10 @@ class UnixListener
 	UnixListener();
 	~UnixListener();
 
+	// disable copying
+	UnixListener(const UnixListener &) = delete;
+	UnixListener & operator=(const UnixListener &) = delete;
+
 	bool bind(const QString &path);
 	std::unique_ptr<UnixStream> accept();
 	int errorCondition() const { return errorCondition_; }

src/core/unixstream.h

@@ -32,6 +32,10 @@ class UnixStream : public ReadWrite
 	UnixStream();
 	~UnixStream();
 
+	// disable copying
+	UnixStream(const UnixStream &) = delete;
+	UnixStream & operator=(const UnixStream &) = delete;
+
 	// returns true if connection starting, false on error
 	bool connect(const QString &path);