mirror of
https://git.savannah.gnu.org/git/guile.git
synced 2025-05-08 22:02:28 +02:00
a2b62b48ab
* test-suite/tests/gc.test ("gc"): Fix "lexical vars are collectable"
test. (Previously, the binding was getting inlined, so we weren't
testing what we meant to test. Besides that, the value was a
constant, not a closure, so it wasn't collectable in the first place!)
100 lines
3.1 KiB
Scheme
100 lines
3.1 KiB
Scheme
;;;; gc.test --- test guile's garbage collection -*- scheme -*-
|
|
;;;; Copyright (C) 2000, 2001, 2004, 2006, 2007, 2008, 2009,
|
|
;;;; 2011, 2012 Free Software Foundation, Inc.
|
|
;;;;
|
|
;;;; This library is free software; you can redistribute it and/or
|
|
;;;; modify it under the terms of the GNU Lesser General Public
|
|
;;;; License as published by the Free Software Foundation; either
|
|
;;;; version 3 of the License, or (at your option) any later version.
|
|
;;;;
|
|
;;;; This library is distributed in the hope that it will be useful,
|
|
;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
;;;; Lesser General Public License for more details.
|
|
;;;;
|
|
;;;; You should have received a copy of the GNU Lesser General Public
|
|
;;;; License along with this library; if not, write to the Free Software
|
|
;;;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
|
|
(define-module (test-suite tests gc)
|
|
#:use-module (ice-9 documentation)
|
|
#:use-module (test-suite lib)
|
|
#:use-module ((system base compile) #:select (compile)))
|
|
|
|
|
|
;;;
|
|
;;; miscellaneous
|
|
;;;
|
|
|
|
|
|
(define (documented? object)
|
|
(not (not (object-documentation object))))
|
|
|
|
;; In guile 1.6.4 this test bombed, due to the record in h being collected
|
|
;; by the gc, but not removed from h, leaving "x" as a freed cell.
|
|
;; The usual correct result here is for x to be #f, but there's always a
|
|
;; chance gc will mark something used when it isn't, so we allow x to be a
|
|
;; record too.
|
|
(pass-if "weak-values versus records"
|
|
(let ((rec-type (make-record-type "foo" '()))
|
|
(h (make-weak-value-hash-table 61)))
|
|
(hash-set! h "foo" ((record-constructor rec-type)))
|
|
(gc)
|
|
(let ((x (hash-ref h "foo")))
|
|
(or (not x)
|
|
((record-predicate rec-type) x)))))
|
|
|
|
|
|
;;;
|
|
;;;
|
|
;;;
|
|
|
|
(define (stack-cleanup depth)
|
|
;; Clean up stack space for DEPTH words. This is defined here so that
|
|
;; `peval' doesn't inline it.
|
|
(let cleanup ((i depth))
|
|
(and (> i 0)
|
|
(begin (cleanup (1- i)) i))))
|
|
|
|
(with-test-prefix "gc"
|
|
|
|
(pass-if "after-gc-hook gets called"
|
|
(let* ((foo #f)
|
|
(thunk (lambda () (set! foo #t))))
|
|
(add-hook! after-gc-hook thunk)
|
|
(gc)
|
|
(remove-hook! after-gc-hook thunk)
|
|
foo))
|
|
|
|
(pass-if "Unused modules are removed"
|
|
(let* ((guard (make-guardian))
|
|
(total 1000))
|
|
|
|
(for-each (lambda (x) (guard (make-module))) (iota total))
|
|
|
|
;; Avoid false references to the modules on the stack.
|
|
(stack-cleanup 20)
|
|
|
|
(gc)
|
|
(gc) ;; twice: have to kill the weak vectors.
|
|
(gc) ;; thrice: because the test doesn't succeed with only
|
|
;; one gc round. not sure why.
|
|
|
|
(= (let lp ((i 0))
|
|
(if (guard)
|
|
(lp (1+ i))
|
|
i))
|
|
total)))
|
|
|
|
(pass-if "Lexical vars are collectable"
|
|
(list?
|
|
(compile
|
|
'(begin
|
|
(define guardian (make-guardian))
|
|
(let ((f (list 'foo)))
|
|
;; Introduce a useless second reference to f to prevent the
|
|
;; optimizer from propagating the lexical binding.
|
|
f
|
|
(guardian f))
|
|
(gc)(gc)(gc)
|
|
(guardian))))))
|