On 19/10/2010, at 1:14 PM, john skaller wrote:
>
> Well i have just run the webserver with FLX_DEBUG on and I got a crash
> whilst garbage collecting:
>
> ....
> Garbage 0x10010e8c0=address
> Garbage 0x10010e8d0=address
> Garbage 0x10010e900=_at19582
> Segmentation fault
Well I know where it is crashing now, roughly:
unsigned long flx_collector_t::sweep()
{
if(debug)
fprintf(stderr,"Collector: Sweep, garbage bit value=%d\n",(int)parity);
unsigned long sweeped = 0;
void *current = NULL;
Word_t *pshape = (Word_t*)JudyLFirst(j_shape,(Word_t*)¤t,&je);
if(pshape==(Word_t*)PPJERR)judyerror("sweep");
while(pshape!=NULL)
{
if((*pshape & 1) == (parity & 1UL))
{
if(debug)
fprintf(stderr,"Garbage %p=%s\n",current,((gc_shape_t*)(*pshape &
~1UL))->cname);
++ sweeped;
unlink(current);
post_delete(current);
}
else
if(debug)
fprintf(stderr,"Reachable %p=%s\n",current,((gc_shape_t*)(*pshape &
~1UL))->cname);
fprintf(stderr,"Calling Judy for next object\n");
pshape = (Word_t*)JudyLNext(j_shape,(Word_t*)(void*)¤t,&je);
fprintf(stderr,"Judy got next object %p\n",pshape);
}
parity = !parity;
if(debug)
fprintf(stderr,"Sweeped %ld\n",sweeped);
return reap();
}
As you can see the "Sweeped" message isn't printed so it has to be crashing
INSIDE the loop.. I sure hope it isn't Judy that is causing the problem,
because I cannot debug Judy and I cannot do without it either: the gc can't
be made to function efficiently with any other data structure.
BTW: Erick, the build system isn't recompiling C++ library files when I change
them in the src.. it isn't copying them either. I have to rebuild the whole
thing
after rm -rf build which is a bit slow ..
--
john skaller
[email protected]
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