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cs: cache object-name for procedures

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Extracting the name from a procedure involves `string->symbol` and
possibly some string parsing. Map the code object to the result
symbol to speed up multiple requests for the same code object.
This commit is contained in:
Matthew Flatt 2020-05-14 19:11:23 -06:00
parent f5f2cd9345
commit 272271f36f
1 changed files with 12 additions and 4 deletions
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16
racket/src/cs/rumble/object-name.ss
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@ -24,6 +24,8 @@
"(or/c exact-nonnegative-integer? (procedure-arity-includes/c 1))"
v)]))))
(define-thread-local procedure-names (make-weak-eq-hashtable))
(define (object-name v)
(cond
[(object-name? v)
@ -38,10 +40,16 @@
[(wrapper-procedure? v)
(extract-wrapper-procedure-name v)]
[else
(let ([name (#%$code-name (#%$closure-code v))])
(and name
(let ([n (procedure-name-string->visible-name-string name)])
(and n (string->symbol n)))))])]
(let ([names procedure-names]
[code (#%$closure-code v)])
(or (eq-hashtable-ref names code #f)
(let ([name (#%$code-name code)])
(and name
(let ([n (procedure-name-string->visible-name-string name)])
(and n
(let ([sym (string->symbol n)])
(eq-hashtable-set! names code sym)
sym)))))))])]
[(impersonator? v)
(object-name (impersonator-val v))]
[(procedure? v)