Re: [Chicken-users] lambda names in profile-output

[Andre Kuehne]

Andre Kuehne wrote:
> Andre Kuehne wrote:
> > I haven't figured out yet under what circumstances lambda-calls get 
> > profiled.
> > Sometimes i get lots of profile-entries like these:
> >
> > ...
> > g1710                                      10100     0.512     0.069  
> > 77.1084
> > g1708                                        101     0.512     0.005  
> > 77.1084
> > g1905                                      10000     0.336     0.36e  
> > 50.6024
> > ...
> >
> > However, some tests showed me, that not all lambdas get profiled. Can 
> > someone tell me, what the restrictions are?
>
> I did some further tests and found that the inclusion of "(use 
> syntax-case)"
> makes the lambda-names disappear:

I digged some more and noticed that all syntax-extensions produce different 
lambda-names:

alexpander           _func_43
syntactic-closures   .func.2
syntax-case          g1531

Since the syntax-case-name looks like a plain gensym, it wasn't too difficult to
find the code where the name is generated. The attached patch to syntax-case 
makes the lambda-names similar to those produced by the syntactic-closures 
extension. This solves my problem at least, but i know next to nothing about the 
inner workings of chicken or syntax-case, so maybe this is not optimal.

Greetings
Andre Kuehne

Index: psyntax.scm
===================================================================
--- psyntax.scm (revision 3893)
+++ psyntax.scm (working copy)
@@ -626,7 +626,7 @@
 
 (define-syntax build-lexical-var
   (syntax-rules ()
-    ((_ src id) (##syncase#source-context src (gensym)))))
+    ((_ src id) (##syncase#source-context src (string->symbol (string-append 
"." (symbol->string id) "." (symbol->string (gensym ""))))))))
 
 (define-syntax self-evaluating?
   (syntax-rules ()