What is the best way to reallocate memory for char array?

[kay]

Thanks.

Is it necessary to use ngx_pfree(str) at the end of my function?

Maxim Dounin Wrote:
-------------------------------------------------------
> Hello!
> 
> On Mon, Nov 17, 2014 at 09:09:34AM -0500, kay wrote:
> 
> > For example I've allocated memory for char *str:
> > 
> > str = ngx_pnalloc(r->pool, len1);
> > 
> > Then I've added some data to "str":
> > 
> > ngx_sprintf(str, "abc");
> > 
> > How should I reallocate this memory? Should I use:
> > 
> > str = ngx_pnalloc(r->pool, len2);
> > 
> > ? And I would like to keep the str's "abc" data as well.
> 
> Best strategy is to allocate len1 + len2 from the start.  E.g., 
> you may try looking into autoindex module: it calculates size of a 
> buffer it will need, and then allocates the buffer.
> 
> -- 
> Maxim Dounin
> http://nginx.org/
> 
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Posted at Nginx Forum: http://forum.nginx.org/read.php?2,254851,254854#msg-254854