Ur/Web: tests/rpchan.ur annotate

Fix a read-after-free bug using a timestamp check

author	Adam Chlipala <adam@chlipala.net>
date	Thu, 19 Nov 2015 13:18:58 -0500
parents	3dd041b00087
children

rev	line source
adam@2064	1 fun remote () =
adam@2064	2 ch <- channel;
adam@2064	3 send ch "Hello World!";
adam@2064	4 return ch
adam@2064	5
adam@2064	6 fun remoter () =
adam@2064	7 ch <- channel;
adam@2064	8 send ch "Hello World!";
adam@2064	9 return <xml><active code={spawn (s <- recv ch; alert s); return <xml/>}/></xml>
adam@2064	10
adam@2064	11 fun main () =
adam@2064	12 x <- source <xml/>;
adam@2064	13 return <xml><body>
adam@2064	14 <button onclick={fn _ => ch <- rpc (remote ()); s <- recv ch; alert s}>TEST</button>
adam@2064	15 <button onclick={fn _ => y <- rpc (remoter ()); set x y}>TESTER</button>
adam@2064	16 <hr/>
adam@2064	17 <dyn signal={signal x}/>
adam@2064	18 </body></xml>

Mercurial > urweb