Re: Yield from debug hook

["Thiago L." <fakedme@...>]

On 16/06/2014 08:16, Thomas Jericke wrote:
> On 06/16/2014 01:11 PM, Thiago L. wrote:
> > On 16/06/2014 03:14, Thomas Jericke wrote:
> > > On 06/15/2014 04:20 PM, Thiago L. wrote:
> > > > I'm messing with coroutines and sandboxing and I need a way to 
> > > > yield from a debug hook. This would let my code check for 
> > > > interrupts on every instruction and stuff... Does anyone have a 
> > > > patch for doing this?
> > >
> > > You don't need a patch to do this, at least not in Lua 5.2
> > > --
> > > Thomas
> > Uhh really? Why didn't it work then? (tested w/ lua 5.2.3)
> You have to call your Lua script with lua_resume. Using lua_call or 
> lua_pcall will give you an error when you try to yield.
> --
> Thomas
Lua 5.2.3  Copyright (C) 1994-2013 Lua.org, PUC-Rio
> co = coroutine.create(function() while true do end end) 
debug.sethook(co,funct
ion() coroutine.yield() end, "clr", 1) print(coroutine.resume(co)) 
print(debug.t
raceback(co))
false   attempt to yield across a C-call boundary
stack traceback:
        [C]: in function 'yield'
        stdin:1: in function <stdin:1>
        stdin:1: in function <stdin:1>