Re: Luajit memory leak bug.
- From: Juan Carlos González Amestoy <jcgamestoy@xxxxxxxxx>
- To: luajit@xxxxxxxxxxxxx
- Date: Tue, 28 Aug 2012 02:05:18 +0200
A simple test case without upvalues...
Works Ok with -joff
local ffi=require('ffi')
local function object(n)
local r={
b=ffi.new('uint8_t[?]',n*n)
}
function r.test(n)
for i=0,n do r.b[0]=0 end
end
return r
end
local o=object(1024)
--o.test(50) -- this works
o.test(100) -- Memory leak
o=nil
for i=1,10 do
collectgarbage('collect')
print(collectgarbage('count'))
end
2012/8/27 Juan Carlos González Amestoy <jcgamestoy@xxxxxxxxx>
> I think i find a bug in luajit.
>
> On the following code:
>
> local ffi=require('ffi')
>
> local function buffer(n)
> return ffi.new('uint8_t[?]',n)
> end
>
> local function object(n)
> local b=buffer(n*n)
>
> local function test(n) -- if n>50 memory leak.
> for i=0,n do b[0]=0 end
> end
>
> return {
> b=b,
> test=test
> }
> end
>
> local function testCreate()
> local o=object(1024)
>
> o.test(50)
> o.test(100) -- if comment this line memory is released.
> end
>
> testCreate()
>
> for i=1,10 do
> collectgarbage('collect')
> print(collectgarbage('count'))
> end
>
>
> If i call the 'test' method with a value greater than 50 the memory buffer
> is never released (the print line prints >1000kb).
>
> I test this in Mac Os X x64 and Linux x64.
>
> PD: Sorry for the bad english
>
> --
> Juan Carlos González Amestoy
>
>
>
--
Juan Carlos González Amestoy
(Servicio Informática Universidad de Alicante)
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