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Re: [Qemu-devel] [PATCH] json-parser: don't replicate tokens at each lev
From: |
Michael Roth |
Subject: |
Re: [Qemu-devel] [PATCH] json-parser: don't replicate tokens at each level of recursion |
Date: |
Wed, 15 Aug 2012 12:50:06 -0500 |
User-agent: |
Mutt/1.5.21 (2010-09-15) |
On Mon, Aug 13, 2012 at 09:25:44PM -0500, Michael Roth wrote:
> On Mon, Aug 13, 2012 at 03:01:56PM -0300, Luiz Capitulino wrote:
> > On Fri, 10 Aug 2012 18:24:10 -0500
> > Michael Roth <address@hidden> wrote:
> >
> > > + qlist_iter(tokens, tokens_count_from_iter, &count);
> > > + if (count == 0) {
> > > + return NULL;
> > > + }
> >
> > Please, add qlist_size() instead.
> >
>
> Gladly :) I spent a good amount for a function that did this, not sure
> how I missed it.
>
Heh, read that as "please, use qlist_size() instead". I've added it
after further searching for it :)
> > > +
> > > + ctxt = g_malloc0(sizeof(JSONParserContext));
> > > + ctxt->tokens.pos = 0;
> > > + ctxt->tokens.count = count;
> > > + ctxt->tokens.buf = g_malloc(count * sizeof(QObject *));
> > > + qlist_iter(tokens, tokens_append_from_iter, ctxt);
> > > + ctxt->tokens.pos = 0;
> > > +
> > > + return ctxt;
> > > +}
> > > +
> > > +static void parser_context_free(JSONParserContext *ctxt)
> > > +{
> > > + int i;
> > > + if (ctxt) {
> > > + for (i = 0; i < ctxt->tokens.count; i++) {
> > > + qobject_decref(ctxt->tokens.buf[i]);
> > > + }
> > > + g_free(ctxt->tokens.buf);
> > > + g_free(ctxt);
> >
> > Isn't this leaking ctxt->err?
> >
>
> Indeed. Looks like we were leaking this previously as well. I'll get it
> in V2.
>
Apparently not, actually. It looks like error_propagate() handles
whether to free the error or pass it up the stack, so we can't mess with
it in the free function. I've added a comment to note that ctxt->err
needs to be freed seperately.
V2 is incoming with comments addressed.