Replace class Queue with the struct Queue

source/tanya/async/event/epoll.d

@@ -26,6 +26,13 @@ import core.sys.posix.unistd;
 import core.time;
 import std.algorithm.comparison;
 
+extern (C) nothrow @nogc
+{
+	int epoll_create1(int flags);
+	int epoll_ctl (int epfd, int op, int fd, epoll_event *event);
+	int epoll_wait (int epfd, epoll_event *events, int maxevents, int timeout);
+}
+
 class EpollLoop : SelectorLoop
 {
 	protected int fd;
@@ -34,7 +41,7 @@ class EpollLoop : SelectorLoop
 	/**
 	 * Initializes the loop.
 	 */
-	this()
+	this() @nogc
 	{
 		if ((fd = epoll_create1(EPOLL_CLOEXEC)) < 0)
 		{
@@ -47,7 +54,7 @@ class EpollLoop : SelectorLoop
 	/**
 	 * Free loop internals.
 	 */
-	~this()
+	~this() @nogc
 	{
 		MmapPool.instance.dispose(events);
 		close(fd);
@@ -63,7 +70,9 @@ class EpollLoop : SelectorLoop
 	 *
 	 * Returns: $(D_KEYWORD true) if the operation was successful.
 	 */
-	protected override bool reify(ConnectionWatcher watcher, EventMask oldEvents, EventMask events)
+	protected override bool reify(ConnectionWatcher watcher,
+	                              EventMask oldEvents,
+	                              EventMask events) @nogc
 	in
 	{
 		assert(watcher !is null);
@@ -97,7 +106,7 @@ class EpollLoop : SelectorLoop
 	/**
 	 * Does the actual polling.
 	 */
-	protected override void poll()
+	protected override void poll() @nogc
 	{
 		// Don't block
 		immutable timeout = cast(immutable int) blockTime.total!"msecs";

source/tanya/async/event/iocp.d

@@ -37,7 +37,7 @@ class IOCPStreamTransport : StreamTransport
 	 * Params:
 	 * 	socket = Socket.
 	 */
-	this(OverlappedConnectedSocket socket)
+	this(OverlappedConnectedSocket socket) @nogc
 	in
 	{
 		assert(socket !is null);
@@ -53,7 +53,8 @@ class IOCPStreamTransport : StreamTransport
 		MmapPool.instance.dispose(input);
 	}
 
-	@property inout(OverlappedConnectedSocket) socket() inout pure nothrow @safe @nogc
+	@property inout(OverlappedConnectedSocket) socket()
+	inout pure nothrow @safe @nogc
 	{
 		return socket_;
 	}
@@ -64,7 +65,7 @@ class IOCPStreamTransport : StreamTransport
 	 * Params:
 	 * 	data = Data to send.
 	 */
-	void write(ubyte[] data)
+	void write(ubyte[] data) @nogc
 	{
 		immutable empty = input.length == 0;
 		input ~= data;
@@ -85,8 +86,8 @@ class IOCPStreamTransport : StreamTransport
 	}
 }
 
-	class IOCPLoop : Loop
-	{
+class IOCPLoop : Loop
+{
 	protected HANDLE completionPort;
 
 	protected OVERLAPPED overlap;
@@ -94,7 +95,7 @@ class IOCPStreamTransport : StreamTransport
 	/**
 	 * Initializes the loop.
 	 */
-	this()
+	this() @nogc
 	{
 		super();
 
@@ -118,7 +119,7 @@ class IOCPStreamTransport : StreamTransport
 	 */
 	override protected bool reify(ConnectionWatcher watcher,
 								  EventMask oldEvents,
-								  EventMask events)
+								  EventMask events) @nogc
 	{
 		SocketState overlapped;
 		if (!(oldEvents & Event.accept) && (events & Event.accept))
@@ -185,7 +186,7 @@ class IOCPStreamTransport : StreamTransport
 	/**
 	 * Does the actual polling.
 	 */
-	override protected void poll()
+	override protected void poll() @nogc
 	{
 		DWORD lpNumberOfBytes;
 		ULONG_PTR key;

source/tanya/async/event/kqueue.d

@@ -151,12 +151,13 @@ class KqueueLoop : SelectorLoop
 	 * Returns: Maximal event count can be got at a time
 	 *          (should be supported by the backend).
 	 */
-	override protected @property inout(uint) maxEvents() inout const pure nothrow @safe @nogc
+	override protected @property inout(uint) maxEvents()
+	inout const pure nothrow @safe @nogc
 	{
 		return cast(uint) events.length;
 	}
 
-	this()
+	this() @nogc
 	{
 		super();
 
@@ -171,14 +172,14 @@ class KqueueLoop : SelectorLoop
 	/**
 	 * Free loop internals.
 	 */
-	~this()
+	~this() @nogc
 	{
 		MmapPool.instance.dispose(events);
 		MmapPool.instance.dispose(changes);
 		close(fd);
 	}
 
-	private void set(socket_t socket, short filter, ushort flags)
+	private void set(socket_t socket, short filter, ushort flags) @nogc
 	{
 		if (changes.length <= changeCount)
 		{
@@ -206,7 +207,7 @@ class KqueueLoop : SelectorLoop
 	 */
 	override protected bool reify(ConnectionWatcher watcher,
 								  EventMask oldEvents,
-								  EventMask events)
+								  EventMask events) @nogc
 	{
 		if (events != oldEvents)
 		{
@@ -233,7 +234,7 @@ class KqueueLoop : SelectorLoop
 	/**
 	 * Does the actual polling.
 	 */
-	protected override void poll()
+	protected override void poll() @nogc
 	{
 		timespec ts;
 		blockTime.split!("seconds", "nsecs")(ts.tv_sec, ts.tv_nsec);
@@ -316,7 +317,7 @@ class KqueueLoop : SelectorLoop
 	 * Returns: The blocking time.
 	 */
 	override protected @property inout(Duration) blockTime()
-	inout @safe pure nothrow
+	inout @nogc @safe pure nothrow
 	{
 		return min(super.blockTime, 1.dur!"seconds");
 	}
@@ -333,7 +334,8 @@ class KqueueLoop : SelectorLoop
 	 *          completed or scheduled, $(D_KEYWORD false) otherwise (the
 	 *          transport is be destroyed then).
 	 */
-	protected override bool feed(SelectorStreamTransport transport, SocketException exception = null)
+	protected override bool feed(SelectorStreamTransport transport,
+	                             SocketException exception = null) @nogc
 	{
 		if (!super.feed(transport, exception))
 		{

source/tanya/async/event/selector.d

@@ -42,7 +42,7 @@ class SelectorStreamTransport : StreamTransport
 	 * 	loop     = Event loop.
 	 * 	socket   = Socket.
 	 */
-	this(SelectorLoop loop, ConnectedSocket socket)
+	this(SelectorLoop loop, ConnectedSocket socket) @nogc
 	{
 		socket_ = socket;
 		this.loop = loop;
@@ -52,7 +52,7 @@ class SelectorStreamTransport : StreamTransport
 	/**
 	 * Close the transport and deallocate the data buffers.
 	 */
-	~this()
+	~this() @nogc
 	{
 		MmapPool.instance.dispose(input);
 	}
@@ -71,7 +71,7 @@ class SelectorStreamTransport : StreamTransport
 	 * Params:
 	 * 	data = Data to send.
 	 */
-	void write(ubyte[] data)
+	void write(ubyte[] data) @nogc
 	{
 		if (!data.length)
 		{
@@ -113,13 +113,13 @@ abstract class SelectorLoop : Loop
 	/// Pending connections.
 	protected ConnectionWatcher[] connections;
 
-	this()
+	this() @nogc
 	{
 		super();
 		connections = MmapPool.instance.makeArray!ConnectionWatcher(maxEvents);
 	}
 
-	~this()
+	~this() @nogc
 	{
 		foreach (ref connection; connections)
 		{
@@ -147,7 +147,8 @@ abstract class SelectorLoop : Loop
 	 *          completed or scheduled, $(D_KEYWORD false) otherwise (the
 	 *          transport will be destroyed then).
 	 */
-	protected bool feed(SelectorStreamTransport transport, SocketException exception = null)
+	protected bool feed(SelectorStreamTransport transport,
+	                    SocketException exception = null) @nogc
 	{
 		while (transport.input.length && transport.writeReady)
 		{
@@ -186,7 +187,7 @@ abstract class SelectorLoop : Loop
 	 * Params:
 	 * 	watcher = Watcher.
 	 */
-	override void start(ConnectionWatcher watcher)
+	override void start(ConnectionWatcher watcher) @nogc
 	{
 		if (watcher.active)
 		{
@@ -208,7 +209,7 @@ abstract class SelectorLoop : Loop
 	 * Params:
 	 * 	connection = Connection watcher ready to accept.
 	 */
-	package void acceptConnections(ConnectionWatcher connection)
+	package void acceptConnections(ConnectionWatcher connection) @nogc
 	in
 	{
 		assert(connection !is null);

source/tanya/async/loop.d

@@ -131,15 +131,16 @@ alias EventMask = BitFlags!Event;
 abstract class Loop
 {
 	/// Pending watchers.
-	protected Queue!Watcher pendings;
+	protected Queue!Watcher* pendings;
 
-	protected Queue!Watcher swapPendings;
+	protected Queue!Watcher* swapPendings;
 
 	/**
 	 * Returns: Maximal event count can be got at a time
 	 *          (should be supported by the backend).
 	 */
-	protected @property inout(uint) maxEvents() inout const pure nothrow @safe @nogc
+	protected @property inout(uint) maxEvents()
+	inout const pure nothrow @safe @nogc
 	{
 		return 128U;
 	}
@@ -147,7 +148,7 @@ abstract class Loop
 	/**
 	 * Initializes the loop.
 	 */
-	this()
+	this() @nogc
 	{
 		pendings = MmapPool.instance.make!(Queue!Watcher);
 		swapPendings = MmapPool.instance.make!(Queue!Watcher);
@@ -156,15 +157,15 @@ abstract class Loop
 	/**
 	 * Frees loop internals.
 	 */
-	~this()
+	~this() @nogc
 	{
-		foreach (w; pendings)
+		foreach (w; *pendings)
 		{
 			MmapPool.instance.dispose(w);
 		}
 		MmapPool.instance.dispose(pendings);
 
-		foreach (w; swapPendings)
+		foreach (w; *swapPendings)
 		{
 			MmapPool.instance.dispose(w);
 		}
@@ -174,7 +175,7 @@ abstract class Loop
 	/**
 	 * Starts the loop.
 	 */
-	void run()
+	void run() @nogc
 	{
 		done_ = false;
 		do
@@ -182,7 +183,7 @@ abstract class Loop
 			poll();
 
 			// Invoke pendings
-			swapPendings.each!((ref p) => p.invoke());
+			swapPendings.each!((ref p) @nogc => p.invoke());
 
 			swap(pendings, swapPendings);
 		}
@@ -192,7 +193,7 @@ abstract class Loop
 	/**
 	 * Break out of the loop.
 	 */
-	void unloop() @safe pure nothrow
+	void unloop() @safe pure nothrow @nogc
 	{
 		done_ = true;
 	}
@@ -203,7 +204,7 @@ abstract class Loop
 	 * Params:
 	 * 	watcher = Watcher.
 	 */
-	void start(ConnectionWatcher watcher)
+	void start(ConnectionWatcher watcher) @nogc
 	{
 		if (watcher.active)
 		{
@@ -219,7 +220,7 @@ abstract class Loop
 	 * Params:
 	 * 	watcher = Watcher.
 	 */
-	void stop(ConnectionWatcher watcher)
+	void stop(ConnectionWatcher watcher) @nogc
 	{
 		if (!watcher.active)
 		{
@@ -242,13 +243,13 @@ abstract class Loop
 	 */
 	abstract protected bool reify(ConnectionWatcher watcher,
 								  EventMask oldEvents,
-								  EventMask events);
+								  EventMask events) @nogc;
 
 	/**
 	 * Returns: The blocking time.
 	 */
 	protected @property inout(Duration) blockTime()
-	inout @safe pure nothrow
+	inout @safe pure nothrow @nogc
 	{
 		// Don't block if we have to do.
 		return swapPendings.empty ? blockTime_ : Duration.zero;
@@ -261,7 +262,7 @@ abstract class Loop
 	 * 	blockTime = The blocking time. Cannot be larger than
 	 * 	            $(D_PSYMBOL maxBlockTime).
 	 */
-	protected @property void blockTime(in Duration blockTime) @safe pure nothrow
+	protected @property void blockTime(in Duration blockTime) @safe pure nothrow @nogc
 	in
 	{
 		assert(blockTime <= 1.dur!"hours", "Too long to wait.");
@@ -275,7 +276,7 @@ abstract class Loop
 	/**
 	 * Kills the watcher and closes the connection.
 	 */
-	protected void kill(IOWatcher watcher, SocketException exception)
+	protected void kill(IOWatcher watcher, SocketException exception) @nogc
 	{
 		watcher.socket.shutdown();
 		defaultAllocator.dispose(watcher.socket);
@@ -287,7 +288,7 @@ abstract class Loop
 	/**
 	 * Does the actual polling.
 	 */
-	abstract protected void poll();
+	abstract protected void poll() @nogc;
 
 	/// Whether the event loop should be stopped.
 	private bool done_;
@@ -321,7 +322,7 @@ class BadLoopException : Exception
  *
  * Returns: The default event loop.
  */
-@property Loop defaultLoop()
+@property Loop defaultLoop() @nogc
 {
 	if (defaultLoop_ !is null)
 	{
@@ -354,7 +355,7 @@ class BadLoopException : Exception
  * Params:
  * 	loop = The event loop.
  */
-@property void defaultLoop(Loop loop)
+@property void defaultLoop(Loop loop) @nogc
 in
 {
 	assert(loop !is null);

source/tanya/async/protocol.d

@@ -22,7 +22,7 @@ interface Protocol
 	 * Params:
 	 * 	data = Read data.
 	 */
-	void received(ubyte[] data);
+	void received(ubyte[] data) @nogc;
 
 	/**
 	 * Called when a connection is made.
@@ -30,7 +30,7 @@ interface Protocol
 	 * Params:
 	 * 	transport = Protocol transport.
 	 */
-	void connected(DuplexTransport transport);
+	void connected(DuplexTransport transport) @nogc;
 
 	/**
 	 * Called when a connection is lost.
@@ -39,7 +39,7 @@ interface Protocol
 	 * 	exception = $(D_PSYMBOL Exception) if an error caused
 	 * 	            the disconnect, $(D_KEYWORD null) otherwise.
 	 */
-	void disconnected(SocketException exception = null);
+	void disconnected(SocketException exception = null) @nogc;
 }
 
 /**

source/tanya/async/transport.d

@@ -37,7 +37,7 @@ interface WriteTransport : Transport
 	 * Params:
 	 * 	data = Data to send.
 	 */
-	void write(ubyte[] data);
+	void write(ubyte[] data) @nogc;
 }
 
 /**

source/tanya/async/watcher.d

@@ -42,7 +42,7 @@ abstract class Watcher
 	/**
 	 * Invoke some action on event.
 	 */
-	void invoke();
+	void invoke() @nogc;
 }
 
 class ConnectionWatcher : Watcher
@@ -51,28 +51,28 @@ class ConnectionWatcher : Watcher
 	private Socket socket_;
 
 	/// Protocol factory.
-	protected Protocol delegate() protocolFactory;
+	protected Protocol delegate() @nogc protocolFactory;
 
-	package Queue!IOWatcher incoming;
+	package Queue!IOWatcher* incoming;
 
 	/**
 	 * Params:
 	 * 	socket = Socket.
 	 */
-	this(Socket socket)
+	this(Socket socket) @nogc
 	{
 		socket_ = socket;
 		incoming = MmapPool.instance.make!(Queue!IOWatcher);
 	}
 
 	/// Ditto.
-	protected this()
+	protected this() pure nothrow @safe @nogc
 	{
 	}
 
-	~this()
+	~this() @nogc
 	{
-		foreach (w; incoming)
+		foreach (w; *incoming)
 		{
 			MmapPool.instance.dispose(w);
 		}
@@ -83,9 +83,9 @@ class ConnectionWatcher : Watcher
 	 * Params:
 	 * 	P = Protocol should be used.
 	 */
-	void setProtocol(P : Protocol)()
+	void setProtocol(P : Protocol)() @nogc
 	{
-		this.protocolFactory = () => cast(Protocol) MmapPool.instance.make!P;
+		this.protocolFactory = () @nogc => cast(Protocol) MmapPool.instance.make!P;
 	}
 
 	/**
@@ -99,7 +99,7 @@ class ConnectionWatcher : Watcher
 	/**
 	 * Returns: New protocol instance.
 	 */
-	@property Protocol protocol()
+	@property Protocol protocol() @nogc
 	in
 	{
 		assert(protocolFactory !is null, "Protocol isn't set.");
@@ -112,9 +112,9 @@ class ConnectionWatcher : Watcher
 	/**
 	 * Invokes new connection callback.
 	 */
-	override void invoke()
+	override void invoke() @nogc
 	{
-		foreach (io; incoming)
+		foreach (io; *incoming)
 		{
 			io.protocol.connected(cast(DuplexTransport) io.transport);
 		}
@@ -146,7 +146,7 @@ class IOWatcher : ConnectionWatcher
 	 * 	transport = Transport.
 	 * 	protocol  = New instance of the application protocol.
 	 */
-	this(StreamTransport transport, Protocol protocol)
+	this(StreamTransport transport, Protocol protocol) @nogc
 	in
 	{
 		assert(transport !is null);
@@ -164,7 +164,7 @@ class IOWatcher : ConnectionWatcher
 	/**
 	 * Destroys the watcher.
 	 */
-	protected ~this()
+	protected ~this() @nogc
 	{
 		MmapPool.instance.dispose(output);
 		MmapPool.instance.dispose(protocol_);
@@ -179,7 +179,8 @@ class IOWatcher : ConnectionWatcher
 	 *
 	 * Returns: $(D_KEYWORD this).
 	 */
-	IOWatcher opCall(StreamTransport transport, Protocol protocol) pure nothrow @nogc
+	IOWatcher opCall(StreamTransport transport, Protocol protocol)
+	pure nothrow @nogc
 	in
 	{
 		assert(transport !is null);
@@ -231,7 +232,7 @@ class IOWatcher : ConnectionWatcher
 	/**
 	 * Invokes the watcher callback.
 	 */
-	override void invoke()
+	override void invoke() @nogc
 	{
 		if (output.length)
 		{