Sleep for unused tick time & optional realtime

- Optional luasocket dependency for realtime measurements (instead of CPU time)
- lua_async.run() will wait for the time to be ready

1 files changed, 8 insertions, 0 deletions

diff --git a/init.lua b/init.lua
index 07bea3e..368ffa9 100644
--- a/init.lua
+++ b/init.lua
@@ -1,5 +1,13 @@
 lua_async = {}
 
+if rawget(_G, "require") then
+	lua_async.socket = require("socket")
+end
+
+function lua_async.clock()
+	return lua_async.socket and lua_async.socket.gettime() or os.clock()
+end
+
 function lua_async.step(dtime)
 	-- timers phase
 	lua_async.timeouts.step(dtime)