File

plugins/mod_storage_none.lua @ 10571:cfeb0077c9e9

net.server_epoll: Avoid concatenating buffer with single item Saves creating a string that'll be identical to buffer[1] anyways, as well as a C function call. Depending on Lua version and length of the string, this could be reusing an interned string, but a longer one would probably be duplicated for no reason. Having exactly one item in the buffer seems like it would be fairly common, but I have not done an extensive study. If opportunistic writes are enabled then it will be even more likely. This special case could be optimized like this in table.concat but it does not look like it is.
author Kim Alvefur <zash@zash.se>
date Sat, 28 Dec 2019 06:18:58 +0100
parent 8061:ef671d337577
line wrap: on
line source

-- luacheck: ignore 212

local driver = {};
local driver_mt = { __index = driver };

function driver:open(store, typ)
	if typ and typ ~= "keyval" and typ ~= "archive" then
		return nil, "unsupported-store";
	end
	return setmetatable({ store = store, type = typ }, driver_mt);
end
function driver:get(user)
	return {};
end

function driver:set(user, data)
	return nil, "Storage disabled";
end

function driver:stores(username)
	return { "roster" };
end

function driver:purge(user)
	return true;
end

function driver:append()
	return nil, "Storage disabled";
end

function driver:find()
	return function () end, 0;
end

function driver:delete()
	return true;
end

module:provides("storage", driver);