RE: HELP - leak in lua 5.0.3
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- Subject: RE: HELP - leak in lua 5.0.3
- From: Mikołaj Dawidowski <dawm@...>
- Date: 2006年7月13日 18:44:33 +0200
Hi,
Thanks for the tool,
however it seems it uses lua 5.1 syntax -
line 10: module("gc", package.seeall) => I commented it out
line 67:for i=1, #comefrom[to] do => I changed it to for i=1,
table.getn(comefrom[to]) do
line 90:for i=1, #ignoreobjs do => I changed it to for i=1,
table.getn(ignoreobjs) do
It doesn't get rejected by the lua 5.0.3 interpreter, however it breaked in
line 96: table is nil
line 96: env.marked[gc] = true
So I changed at line 10 module("gc", package.seeall) => gc = _G
Now it breaks in line: 138: local mtable = debug.getmetatable(obj) =>
attempt to call field 'getmetatable' (a nil value).
Hmmm, I'll go ahead and try some more "comment out" tricks :)
But maybe you have a version for 5.0.3 of this tool? :)
Nick
________________________________
From: Alexandra Barros [mailto:alexandra.barros@gmail.com]
Sent: Thursday, July 13, 2006 4:53 PM
To: Lua list
Subject: Re: HELP - leak in lua 5.0.3
Hi,
Here is the tool. You can implement a function that gives you the
information you want and then call the function traverse passing your
function as a parameter. As an example, you can look at the functions
'countreferences' and 'findallpaths'. But if these functions already gives
you all the information you want... well.. that's better =)
But it hasn't been fully tested yet. Please, report me if you find any bugs.
Thanks,
Alexandra.
On 7/12/06, Roberto Ierusalimschy < roberto@inf.puc-rio.br
<mailto:roberto@inf.puc-rio.br> > wrote:
> Sorry, no insights into this leak specifically, but it
> does bring up a possible suggestion for Lua 5.2 (or 6.0,
> or whatever) - the ability to programatically walk or otherwise
> instrument the not-dead object set in a similar manner to how the
> GC does.
You can do that in Lua itself, using some reflexive facilities. I
guess
someone in the list did some tool for this. A student of mine also
wrote such tool (to traverse all live objects of a state). If she is
not in the list, you may contact her directly:
Alexandra Barros <abarros at inf dot puc-rio dot br>
-- Roberto