Organize builtin into subdirectories

1 files changed, 42 insertions, 0 deletions

diff --git a/builtin/common/async_event.lua b/builtin/common/async_event.lua
new file mode 100644
index 000000000..ef4bf4354
--- /dev/null
+++ b/builtin/common/async_event.lua
@@ -0,0 +1,42 @@
+
+local core = engine or minetest
+
+core.async_jobs = {}
+
+local function handle_job(jobid, serialized_retval)
+	local retval = core.deserialize(serialized_retval)
+	assert(type(core.async_jobs[jobid]) == "function")
+	core.async_jobs[jobid](retval)
+	core.async_jobs[jobid] = nil
+end
+
+if engine ~= nil then
+	core.async_event_handler = handle_job
+else
+	minetest.register_globalstep(function(dtime)
+		for i, job in ipairs(core.get_finished_jobs()) do
+			handle_job(job.jobid, job.retval)
+		end
+	end)
+end
+
+function core.handle_async(func, parameter, callback)
+	-- Serialize function
+	local serialized_func = string.dump(func)
+
+	assert(serialized_func ~= nil)
+
+	-- Serialize parameters
+	local serialized_param = core.serialize(parameter)
+
+	if serialized_param == nil then
+		return false
+	end
+
+	local jobid = core.do_async_callback(serialized_func, serialized_param)
+
+	core.async_jobs[jobid] = callback
+
+	return true
+end
+