From 09101e4e44d5dbd87e4ef88bc8ef422e6642eb7b Mon Sep 17 00:00:00 2001
From: "Guillermo J. Rozas" <edu/mit/csail/zurich/gjr>
Date: Fri, 25 Jun 1993 21:08:38 +0000
Subject: [PATCH] Add queue->list and queue->list/unsafe operations.
---
v7/src/runtime/queue.scm | 17 +++++++++++++----
1 file changed, 13 insertions(+), 4 deletions(-)
diff --git a/v7/src/runtime/queue.scm b/v7/src/runtime/queue.scm
index 5347f56eb..21dd0d451 100644
--- a/v7/src/runtime/queue.scm
+++ b/v7/src/runtime/queue.scm
@@ -1,8 +1,8 @@
#| -*-Scheme-*-
-$Header: /Users/cph/tmp/foo/mit-scheme/mit-scheme/v7/src/runtime/queue.scm,v 14.2 1988/06/13 11:50:28 cph Rel $
+$Id: queue.scm,v 14.3 1993/06/25 21:08:38 gjr Exp $
-Copyright (c) 1988 Massachusetts Institute of Technology
+Copyright (c) 1988-1993 Massachusetts Institute of Technology
This material was developed by the Scheme project at the Massachusetts
Institute of Technology, Department of Electrical Engineering and
@@ -51,7 +51,8 @@ MIT in each case. |#
(if (null? (cdr queue))
(set-car! queue next)
(set-cdr! (cdr queue) next))
- (set-cdr! queue next)))
+ (set-cdr! queue next)
+ unspecific))
(define (dequeue!/unsafe queue)
(let ((next (car queue)))
@@ -68,6 +69,9 @@ MIT in each case. |#
(if (not (queue-empty? queue))
(begin (procedure (dequeue!/unsafe queue))
(loop)))))
+
+(define-integrable (queue->list/unsafe queue)
+ (car queue))
;;; Safe (interrupt locked) versions of the above operations.
@@ -91,4 +95,9 @@ MIT in each case. |#
(dequeue!/unsafe queue))))))
(if (not (eq? item empty))
(begin (procedure item)
- (loop)))))))
\ No newline at end of file
+ (loop)))))))
+
+(define (queue->list queue)
+ (without-interrupts
+ (lambda ()
+ (list-copy (queue->list/unsafe queue)))))
\ No newline at end of file
--
2.25.1