Add userData!T properties for all descriptor based primitives.

source/eventcore/driver.d

@@ -327,11 +327,6 @@ interface EventDriverSockets {
 	/// ditto
 	bool setOption(StreamSocketFD socket, StreamSocketOption option, bool enable);
 
-	/// Low-level user data access. Use `getUserData` instead.
-	protected void* rawUserData(StreamSocketFD descriptor, size_t size, DataInitializer initialize, DataInitializer destroy) @system;
-	/// ditto
-	protected void* rawUserData(DatagramSocketFD descriptor, size_t size, DataInitializer initialize, DataInitializer destroy) @system;
-
 	/** Retrieves a reference to a user-defined value associated with a descriptor.
 	*/
 	@property final ref T userData(T, FD)(FD descriptor)
@@ -341,6 +336,13 @@ interface EventDriverSockets {
 		static void destr(void* ptr) { destroy(*cast(T*)ptr); }
 		return *cast(T*)rawUserData(descriptor, T.sizeof, &init, &destr);
 	}
+
+	/// Low-level user data access. Use `getUserData` instead.
+	protected void* rawUserData(StreamSocketFD descriptor, size_t size, DataInitializer initialize, DataInitializer destroy) @system;
+	/// ditto
+	protected void* rawUserData(StreamListenSocketFD descriptor, size_t size, DataInitializer initialize, DataInitializer destroy) @system;
+	/// ditto
+	protected void* rawUserData(DatagramSocketFD descriptor, size_t size, DataInitializer initialize, DataInitializer destroy) @system;
 }
 
 
@@ -384,8 +386,22 @@ interface EventDriverFiles {
 			Returns `false` $(I iff) the last reference was removed by this call.
 	*/
 	bool releaseRef(FileFD descriptor);
+
+	/** Retrieves a reference to a user-defined value associated with a descriptor.
+	*/
+	@property final ref T userData(T)(FileFD descriptor)
+	@trusted {
+		import std.conv : emplace;
+		static void init(void* ptr) { emplace(cast(T*)ptr); }
+		static void destr(void* ptr) { destroy(*cast(T*)ptr); }
+		return *cast(T*)rawUserData(descriptor, T.sizeof, &init, &destr);
+	}
+
+	/// Low-level user data access. Use `userData` instead.
+	protected void* rawUserData(FileFD descriptor, size_t size, DataInitializer initialize, DataInitializer destroy) @system;
 }
 
+
 /** Cross-thread notifications
 
 	"Events" can be used to wake up the event loop of a foreign thread. This is
@@ -428,6 +444,19 @@ interface EventDriverEvents {
 			Returns `false` $(I iff) the last reference was removed by this call.
 	*/
 	bool releaseRef(EventID descriptor);
+
+	/** Retrieves a reference to a user-defined value associated with a descriptor.
+	*/
+	@property final ref T userData(T)(EventID descriptor)
+	@trusted {
+		import std.conv : emplace;
+		static void init(void* ptr) { emplace(cast(T*)ptr); }
+		static void destr(void* ptr) { destroy(*cast(T*)ptr); }
+		return *cast(T*)rawUserData(descriptor, T.sizeof, &init, &destr);
+	}
+
+	/// Low-level user data access. Use `userData` instead.
+	protected void* rawUserData(EventID descriptor, size_t size, DataInitializer initialize, DataInitializer destroy) @system;
 }
 
 
@@ -496,6 +525,19 @@ interface EventDriverTimers {
 
 	/// Determines if the given timer's reference count equals one.
 	bool isUnique(TimerID descriptor) const;
+
+	/** Retrieves a reference to a user-defined value associated with a descriptor.
+	*/
+	@property final ref T userData(T)(TimerID descriptor)
+	@trusted {
+		import std.conv : emplace;
+		static void init(void* ptr) { emplace(cast(T*)ptr); }
+		static void destr(void* ptr) { destroy(*cast(T*)ptr); }
+		return *cast(T*)rawUserData(descriptor, T.sizeof, &init, &destr);
+	}
+
+	/// Low-level user data access. Use `userData` instead.
+	protected void* rawUserData(TimerID descriptor, size_t size, DataInitializer initialize, DataInitializer destroy) @system;
 }
 
 interface EventDriverWatchers {
@@ -516,6 +558,19 @@ interface EventDriverWatchers {
 			Returns `false` $(I iff) the last reference was removed by this call.
 	*/
 	bool releaseRef(WatcherID descriptor);
+
+	/** Retrieves a reference to a user-defined value associated with a descriptor.
+	*/
+	@property final ref T userData(T)(WatcherID descriptor)
+	@trusted {
+		import std.conv : emplace;
+		static void init(void* ptr) { emplace(cast(T*)ptr); }
+		static void destr(void* ptr) { destroy(*cast(T*)ptr); }
+		return *cast(T*)rawUserData(descriptor, T.sizeof, &init, &destr);
+	}
+
+	/// Low-level user data access. Use `userData` instead.
+	protected void* rawUserData(WatcherID descriptor, size_t size, DataInitializer initialize, DataInitializer destroy) @system;
 }
 
 

source/eventcore/drivers/posix/driver.d

@@ -192,18 +192,9 @@ final class PosixEventDriverCore(Loop : PosixEventLoop, Timers : EventDriverTime
 		return rawUserDataImpl(descriptor, size, initialize, destroy);
 	}
 
-	private void* rawUserDataImpl(FD descriptor, size_t size, DataInitializer initialize, DataInitializer destroy)
+	protected final void* rawUserDataImpl(FD descriptor, size_t size, DataInitializer initialize, DataInitializer destroy)
 	@system {
-		FDSlot* fds = &m_loop.m_fds[descriptor].common;
+		return m_loop.rawUserDataImpl(descriptor, size, initialize, destroy);
-		assert(fds.userDataDestructor is null || fds.userDataDestructor is destroy,
-			"Requesting user data with differing type (destructor).");
-		assert(size <= FDSlot.userData.length, "Requested user data is too large.");
-		if (size > FDSlot.userData.length) assert(false);
-		if (!fds.userDataDestructor) {
-			initialize(fds.userData.ptr);
-			fds.userDataDestructor = destroy;
-		}
-		return m_loop.m_fds[descriptor].common.userData.ptr;
 	}
 }
 
@@ -281,6 +272,20 @@ package class PosixEventLoop {
 					m_waiterCount--;
 		*slot = m_fds.FullField.init;
 	}
+
+	package final void* rawUserDataImpl(size_t descriptor, size_t size, DataInitializer initialize, DataInitializer destroy)
+	@system {
+		FDSlot* fds = &m_fds[descriptor].common;
+		assert(fds.userDataDestructor is null || fds.userDataDestructor is destroy,
+			"Requesting user data with differing type (destructor).");
+		assert(size <= FDSlot.userData.length, "Requested user data is too large.");
+		if (size > FDSlot.userData.length) assert(false);
+		if (!fds.userDataDestructor) {
+			initialize(fds.userData.ptr);
+			fds.userDataDestructor = destroy;
+		}
+		return fds.userData.ptr;
+	}
 }
 
 

source/eventcore/drivers/posix/events.d

@@ -227,6 +227,11 @@ final class PosixEventDriverEvents(Loop : PosixEventLoop, Sockets : EventDriverS
 		return true;
 	}
 
+	final protected override void* rawUserData(EventID descriptor, size_t size, DataInitializer initialize, DataInitializer destroy)
+	@system {
+		return m_loop.rawUserDataImpl(descriptor, size, initialize, destroy);
+	}
+
 	private EventSlot* getSlot(EventID id)
 	{
 		nogc_assert(id < m_loop.m_fds.length, "Invalid event ID.");

source/eventcore/drivers/posix/sockets.d

@@ -799,8 +799,9 @@ final class PosixEventDriverSockets(Loop : PosixEventLoop) : EventDriverSockets
 
 	final override void addRef(SocketFD fd)
 	{
-		assert(m_loop.m_fds[fd].common.refCount > 0, "Adding reference to unreferenced socket FD.");
+		auto slot = () @trusted { return &m_loop.m_fds[fd]; } ();
-		m_loop.m_fds[fd].common.refCount++;
+		assert(slot.common.refCount > 0, "Adding reference to unreferenced socket FD.");
+		slot.common.refCount++;
 	}
 
 	final override bool releaseRef(SocketFD fd)
@@ -843,26 +844,17 @@ final class PosixEventDriverSockets(Loop : PosixEventLoop) : EventDriverSockets
 
 	final protected override void* rawUserData(StreamSocketFD descriptor, size_t size, DataInitializer initialize, DataInitializer destroy)
 	@system {
-		return rawUserDataImpl(descriptor, size, initialize, destroy);
+		return m_loop.rawUserDataImpl(descriptor, size, initialize, destroy);
+	}
+
+	final protected override void* rawUserData(StreamListenSocketFD descriptor, size_t size, DataInitializer initialize, DataInitializer destroy)
+	@system {
+		return m_loop.rawUserDataImpl(descriptor, size, initialize, destroy);
 	}
 
 	final protected override void* rawUserData(DatagramSocketFD descriptor, size_t size, DataInitializer initialize, DataInitializer destroy)
 	@system {
-		return rawUserDataImpl(descriptor, size, initialize, destroy);
+		return m_loop.rawUserDataImpl(descriptor, size, initialize, destroy);
-	}
-
-	private void* rawUserDataImpl(FD descriptor, size_t size, DataInitializer initialize, DataInitializer destroy)
-	@system {
-		auto fds = &m_loop.m_fds[descriptor].common;
-		assert(fds.userDataDestructor is null || fds.userDataDestructor is destroy,
-			"Requesting user data with differing type (destructor).");
-		assert(size <= fds.userData.length, "Requested user data is too large.");
-		if (size > fds.userData.length) assert(false);
-		if (!fds.userDataDestructor) {
-			initialize(fds.userData.ptr);
-			fds.userDataDestructor = destroy;
-		}
-		return m_loop.m_fds[descriptor].common.userData.ptr;
 	}
 
 	private sock_t createSocket(AddressFamily family, int type)

source/eventcore/drivers/posix/watchers.d

@@ -77,6 +77,11 @@ final class InotifyEventDriverWatchers(Events : EventDriverEvents) : EventDriver
 		return true;
 	}
 
+	final protected override void* rawUserData(WatcherID descriptor, size_t size, DataInitializer initialize, DataInitializer destroy)
+	@system {
+		return m_loop.rawUserDataImpl(descriptor, size, initialize, destroy);
+	}
+
 	private void onChanges(FD fd)
 	{
 		processEvents(cast(WatcherID)fd);
@@ -211,6 +216,12 @@ final class FSEventsEventDriverWatchers(Events : EventDriverEvents) : EventDrive
 		FSEventStreamRelease*/
 		assert(false, "TODO!");
 	}
+
+	final protected override void* rawUserData(WatcherID descriptor, size_t size, DataInitializer initialize, DataInitializer destroy)
+	@system {
+		return m_loop.rawUserDataImpl(descriptor, size, initialize, destroy);
+	}
+
 }
 
 
@@ -294,6 +305,11 @@ final class PollEventDriverWatchers(Events : EventDriverEvents) : EventDriverWat
 		return true;
 	}
 
+	final protected override void* rawUserData(WatcherID descriptor, size_t size, DataInitializer initialize, DataInitializer destroy)
+	@system {
+		return m_events.loop.rawUserDataImpl(cast(EventID)descriptor, size, initialize, destroy);
+	}
+
 	private void onEvent(EventID evt)
 	{
 		import std.algorithm.mutation : swap;

source/eventcore/drivers/threadedfile.d

@@ -101,11 +101,14 @@ final class ThreadedFileEventDriver(Events : EventDriverEvents) : EventDriverFil
 		static struct FileInfo {
 			IOInfo read;
 			IOInfo write;
+
 			int refCount;
+			DataInitializer userDataDestructor;
+			ubyte[16*size_t.sizeof] userData;
 		}
 
 		TaskPool m_fileThreadPool;
-		ChoppedVector!FileInfo m_files;
+		ChoppedVector!FileInfo m_files; // TODO: use the one from the posix loop
 		SmallIntegerSet!FileFD m_activeReads;
 		SmallIntegerSet!FileFD m_activeWrites;
 		EventID m_readyEvent = EventID.invalid;
@@ -268,6 +271,20 @@ final class ThreadedFileEventDriver(Events : EventDriverEvents) : EventDriverFil
 		return true;
 	}
 
+	protected final override void* rawUserData(FileFD descriptor, size_t size, DataInitializer initialize, DataInitializer destroy)
+	@system {
+		FileInfo* fds = &m_files[descriptor];
+		assert(fds.userDataDestructor is null || fds.userDataDestructor is destroy,
+			"Requesting user data with differing type (destructor).");
+		assert(size <= FileInfo.userData.length, "Requested user data is too large.");
+		if (size > FileInfo.userData.length) assert(false);
+		if (!fds.userDataDestructor) {
+			initialize(fds.userData.ptr);
+			fds.userDataDestructor = destroy;
+		}
+		return fds.userData.ptr;
+	}
+
 	/// private
 	static void taskFun(string op, UB)(ThreadedFileEventDriver fd, FileFD file, ulong offset, UB[] buffer)
 	{

source/eventcore/drivers/timer.d

@@ -170,6 +170,20 @@ final class LoopTimeoutTimerDriver : EventDriverTimers {
 		return m_timers[descriptor].refCount == 1;
 	}
 
+	protected final override void* rawUserData(TimerID descriptor, size_t size, DataInitializer initialize, DataInitializer destroy)
+	@system {
+		TimerSlot* fds = m_timers[descriptor];
+		assert(fds.userDataDestructor is null || fds.userDataDestructor is destroy,
+			"Requesting user data with differing type (destructor).");
+		assert(size <= TimerSlot.userData.length, "Requested user data is too large.");
+		if (size > TimerSlot.userData.length) assert(false);
+		if (!fds.userDataDestructor) {
+			initialize(fds.userData.ptr);
+			fds.userDataDestructor = destroy;
+		}
+		return fds.userData.ptr;
+	}
+
 	private void enqueueTimer(TimerSlot* tm)
 	nothrow {
 		TimerSlot* ns;
@@ -192,4 +206,7 @@ struct TimerSlot {
 	long timeout; // stdtime
 	long repeatDuration;
 	TimerCallback callback; // TODO: use a list with small-value optimization
+
+	DataInitializer userDataDestructor;
+	ubyte[16*size_t.sizeof] userData;
 }

source/eventcore/drivers/winapi/core.d

@@ -98,6 +98,20 @@ final class WinAPIEventDriverCore : EventDriverCore {
 		m_exit = false;
 	}
 
+	package void* rawUserDataImpl(HANDLE handle, size_t size, DataInitializer initialize, DataInitializer destroy)
+	@system {
+		HandleSlot* fds = &m_handles[handle];
+		assert(fds.userDataDestructor is null || fds.userDataDestructor is destroy,
+			"Requesting user data with differing type (destructor).");
+		assert(size <= HandleSlot.userData.length, "Requested user data is too large.");
+		if (size > HandleSlot.userData.length) assert(false);
+		if (!fds.userDataDestructor) {
+			initialize(fds.userData.ptr);
+			fds.userDataDestructor = destroy;
+		}
+		return fds.userData.ptr;
+	}
+
 	protected override void* rawUserData(StreamSocketFD descriptor, size_t size, DataInitializer initialize, DataInitializer destroy) @system
 	{
 		assert(false, "TODO!");
@@ -208,6 +222,9 @@ private struct HandleSlot {
 	int refCount;
 	TaggedAlgebraic!SpecificTypes specific;
 
+	DataInitializer userDataDestructor;
+	ubyte[16*size_t.sizeof] userData;
+
 	@safe nothrow:
 
 	@property ref FileSlot file() { return specific.get!FileSlot; }

source/eventcore/drivers/winapi/events.d

@@ -126,6 +126,11 @@ final class WinAPIEventDriverEvents : EventDriverEvents {
 		return true;
 	}
 
+	protected override void* rawUserData(EventID descriptor, size_t size, DataInitializer initialize, DataInitializer destroy)
+	@system {
+		return m_core.rawUserDataImpl(idToHandle(descriptor), size, initialize, destroy);
+	}
+
 	private void triggerPending()
 	{
 		while (true) {

source/eventcore/drivers/winapi/files.d

@@ -154,6 +154,11 @@ final class WinAPIEventDriverFiles : EventDriverFiles {
 		});
 	}
 
+	protected override void* rawUserData(FileFD descriptor, size_t size, DataInitializer initialize, DataInitializer destroy)
+	@system {
+		return m_core.rawUserDataImpl(idToHandle(descriptor), size, initialize, destroy);
+	}
+
 	private static void startIO(alias fun, bool RO)(HANDLE h, FileSlot.Direction!RO* slot)
 	{
 		import std.algorithm.comparison : min;

source/eventcore/drivers/winapi/sockets.d

@@ -754,6 +754,11 @@ final class WinAPIEventDriverSockets : EventDriverSockets {
 		return rawUserDataImpl(descriptor, size, initialize, destroy);
 	}
 
+	final protected override void* rawUserData(StreamListenSocketFD descriptor, size_t size, DataInitializer initialize, DataInitializer destroy)
+	@system {
+		return rawUserDataImpl(descriptor, size, initialize, destroy);
+	}
+
 	final protected override void* rawUserData(DatagramSocketFD descriptor, size_t size, DataInitializer initialize, DataInitializer destroy)
 	@system {
 		return rawUserDataImpl(descriptor, size, initialize, destroy);
@@ -770,7 +775,7 @@ final class WinAPIEventDriverSockets : EventDriverSockets {
 			initialize(fds.userData.ptr);
 			fds.userDataDestructor = destroy;
 		}
-		return m_sockets[descriptor].common.userData.ptr;
+		return fds.userData.ptr;
 	}
 
 	private void initSocketSlot(SocketFD fd)

source/eventcore/drivers/winapi/watchers.d

@@ -69,6 +69,11 @@ final class WinAPIEventDriverWatchers : EventDriverWatchers {
 		return doReleaseRef(idToHandle(descriptor));
 	}
 
+	protected override void* rawUserData(WatcherID descriptor, size_t size, DataInitializer initialize, DataInitializer destroy)
+	@system {
+		return m_core.rawUserDataImpl(idToHandle(descriptor), size, initialize, destroy);
+	}
+
 	private static bool doReleaseRef(HANDLE handle)
 	{
 		auto core = WinAPIEventDriver.threadInstance.core;