Re: [Caml-list] ::how to locate the function in profile generated by gprof

["Török Edwin" <edwin+ml-ocaml@etorok.net>]

On 2013-02-01 14:11, rixed@happyleptic.org wrote:
> -[ Fri, Feb 01, 2013 at 06:09:21PM +0800, ?????? ]----
>> For example, I have a module Misc, so there are function name like camlMisc__fun_1201.
>> So how can I locate the this function in source code?
> 
> What I'd do is recompile the Misc module with -S to have the assembly temporary
> file and look in there camlMisc__fun_1201.  First I'd note if this anonymous
> function does raise some exception or allocate some memory (it's easy to tell
> from the asm version), then I'd follow up the caller chain up to the first
> named function.  Then back to the definition of this named function in misc.ml,
> I'd look for all anonymous functions available from there that have the same
> caracteristics reguarding exceptions and allocation.
> 
> In case there are many anonymous functions in there or because of inlining this
> may be hard but in general it's quite easy to find out the culprit from there.
> 

With OCaml 4.00.1 it might work to add -g to ocamlopt and use gdb to find out, for example:
$ ocamlopt x.ml -g -p -o x
$ gdb ./x
(gdb) b camlPrintf__fun_1770
Breakpoint 1 at 0x411ed0: file printf.ml, line 651.

--Edwin