Doom9's Forum - View Single Post

feisty2 · 21st November 2020, 20:10

I can't decide which is the correct design for message handlers.
should I bind the lifetime of a message handler to its descriptor, like a file descriptor?

Code:

auto md = Core.AddMessageHandler([](auto...) {});
// md is a stateful object
// automatically calls removeMessageHandler() in md's destructor when it goes out of scope

or should I let the user manage the handler's lifetime manually?

Code:

auto md = Core.AddMessageHandler([](auto...) {});
// md is a stateless integer ID / pointer

Core.Eject(md);
// explicitly ejects the handler when no longer needed.

21st November 2020, 20:10	#4186 \| Link
feisty2 I'm Siri Join Date: Oct 2012 Location: void Posts: 2,633	I can't decide which is the correct design for message handlers. should I bind the lifetime of a message handler to its descriptor, like a file descriptor? Code: auto md = Core.AddMessageHandler([](auto...) {}); // md is a stateful object // automatically calls removeMessageHandler() in md's destructor when it goes out of scope or should I let the user manage the handler's lifetime manually? Code: auto md = Core.AddMessageHandler([](auto...) {}); // md is a stateless integer ID / pointer Core.Eject(md); // explicitly ejects the handler when no longer needed.