minetest/builtin/async_event.lua
ShadowNinja 6ab3b4c838 Remove dependency on marshal and many other async changes
This makes a number of changes:
  * Remove the dependency on marshal by using string.dump and loadstring.
  * Use lua_tolstring rather than having Lua functions pass string lengths to C++.
  * Move lua_api/l_async_events.* to cpp_api/s_async.*, where it belongs.
  * Make AsyncWorkerThread a child of ScriptApiBase, this removes some duplicate functionality.
  * Don't wait for async threads to shut down.  (Is this safe?  Might result in corruption if the thread is writing to a file.)
  * Pop more unused items from the stack
  * Code style fixes
  * Other misc changes
2014-04-27 16:15:53 -04:00

46 lines
1015 B
Lua

local tbl = engine or minetest
local SCRIPTDIR = SCRIPTDIR or tbl.get_scriptdir()
minetest = tbl
dofile(SCRIPTDIR .. DIR_DELIM .. "serialize.lua")
tbl.async_jobs = {}
local function handle_job(jobid, serialized_retval)
local retval = tbl.deserialize(serialized_retval)
assert(type(tbl.async_jobs[jobid]) == "function")
tbl.async_jobs[jobid](retval)
tbl.async_jobs[jobid] = nil
end
if engine ~= nil then
tbl.async_event_handler = handle_job
else
minetest.register_globalstep(function(dtime)
for i, job in ipairs(tbl.get_finished_jobs()) do
handle_job(job.jobid, job.retval)
end
end)
end
function tbl.handle_async(func, parameter, callback)
-- Serialize function
local serialized_func = string.dump(func)
assert(serialized_func ~= nil)
-- Serialize parameters
local serialized_param = tbl.serialize(parameter)
if serialized_param == nil then
return false
end
local jobid = tbl.do_async_callback(serialized_func, serialized_param)
tbl.async_jobs[jobid] = callback
return true
end