86 lines
2.5 KiB
Scheme
86 lines
2.5 KiB
Scheme
;;; Ikarus Scheme -- A compiler for R6RS Scheme.
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;;; Copyright (C) 2006,2007,2008 Abdulaziz Ghuloum
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;;;
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;;; This program is free software: you can redistribute it and/or modify
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;;; it under the terms of the GNU General Public License version 3 as
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;;; published by the Free Software Foundation.
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;;;
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;;; This program is distributed in the hope that it will be useful, but
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;;; WITHOUT ANY WARRANTY; without even the implied warranty of
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;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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;;; General Public License for more details.
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;;;
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;;; You should have received a copy of the GNU General Public License
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;;; along with this program. If not, see <http://www.gnu.org/licenses/>.
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(library (ikarus collect)
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(export do-overflow do-overflow-words do-vararg-overflow collect
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do-stack-overflow collect-key post-gc-hooks)
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(import
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(except (ikarus) collect collect-key post-gc-hooks)
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(ikarus system $fx)
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(ikarus system $arg-list))
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(define post-gc-hooks
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(make-parameter '()
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(lambda (ls)
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;;; null? check so that we don't reference list? and andmap
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;;; at this stage of booting.
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(if (or (null? ls) (and (list? ls) (andmap procedure? ls)))
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ls
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(die 'post-gc-hooks "not a list of procedures" ls)))))
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(define (do-post-gc ls n)
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(let ([k0 (collect-key)])
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(parameterize ([post-gc-hooks '()])
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(for-each (lambda (x) (x)) ls))
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(if (eq? k0 (collect-key))
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(let ([was-enough? (foreign-call "ik_collect_check" n)])
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;;; handlers ran without GC but there is was not enough
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;;; space in the nursery for the pending allocation,
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(unless was-enough? (do-post-gc ls n)))
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(let ()
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;;; handlers did cause a GC, so, do the handlers again.
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(do-post-gc ls n)))))
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(define do-overflow
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(lambda (n)
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(foreign-call "ik_collect" n)
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(let ([ls (post-gc-hooks)])
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(unless (null? ls) (do-post-gc ls n)))))
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(define do-overflow-words
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(lambda (n)
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(let ([n ($fxsll n 2)])
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(foreign-call "ik_collect" n)
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(let ([ls (post-gc-hooks)])
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(unless (null? ls) (do-post-gc ls n))))))
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(define do-vararg-overflow do-overflow)
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(define collect
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(lambda ()
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(do-overflow 4096)))
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(define do-stack-overflow
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(lambda ()
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(foreign-call "ik_stack_overflow")))
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(define dump-metatable
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(lambda ()
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(foreign-call "ik_dump_metatable")))
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(define dump-dirty-vector
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(lambda ()
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(foreign-call "ik_dump_dirty_vector")))
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(define (collect-key)
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(or ($collect-key)
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(begin
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($collect-key (gensym))
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(collect-key))))
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)
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