prosody
aac4c6147647
util/async.lua

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util/async.lua @ 5792:aac4c6147647

util.async: waiter: Remove restriction about wait() being called before done()
author Matthew Wild <mwild1@gmail.com>
date Mon, 12 Aug 2013 12:08:51 +0100
parent 5791:2c98061b6b1e
child 5793:e8c79796ead9
comparison
equal deleted inserted replaced
5791:2c98061b6b1e 5792:aac4c6147647
26 local thread = coroutine.running(); 26 local thread = coroutine.running();
27 if not thread then 27 if not thread then
28 error("Not running in an async context, see http://prosody.im/doc/developers/async"); 28 error("Not running in an async context, see http://prosody.im/doc/developers/async");
29 end 29 end
30 num = num or 1; 30 num = num or 1;
31 local waiting;
31 return function () 32 return function ()
33 if num == 0 then return; end -- already done
34 waiting = true;
32 coroutine.yield("wait"); 35 coroutine.yield("wait");
33 end, function () 36 end, function ()
34 num = num - 1; 37 num = num - 1;
35 if num == 0 then 38 if num == 0 and waiting then
36 if not runner_continue(thread) then 39 runner_continue(thread);
37 error("done() called without wait()!");
38 end
39 end 40 end
40 end; 41 end;
41 end 42 end
42 43
43 local runner_mt = {}; 44 local runner_mt = {};