X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=tests%2Fthreads.impure.lisp;h=cbf5ce6a34cbe1226bb1c88f817facacbbdebd2f;hb=828bcd9589641a560e01c2f2bc9134a0aaacd552;hp=dd2544c6d5a5e867ca69c57d050a6693021ac3a2;hpb=9a0a0d199e9fbecd1b5acd65293af5132b6825ac;p=sbcl.git

diff --git a/tests/threads.impure.lisp b/tests/threads.impure.lisp
index dd2544c..cbf5ce6 100644
--- a/tests/threads.impure.lisp
+++ b/tests/threads.impure.lisp
@@ -13,6 +13,57 @@
 
 (in-package "SB-THREAD") ; this is white-box testing, really
 
+;;; compare-and-swap
+
+(defmacro defincf (name accessor &rest args)
+  `(defun ,name (x)
+     (let* ((old (,accessor x ,@args))
+	 (new (1+ old)))
+    (loop until (eq old (sb-ext:compare-and-swap (,accessor x ,@args) old new))
+       do (setf old (,accessor x ,@args)
+		new (1+ old)))
+    new)))
+
+(defstruct cas-struct (slot 0))
+
+(defincf incf-car car)
+(defincf incf-cdr cdr)
+(defincf incf-slot cas-struct-slot)
+(defincf incf-symbol-value symbol-value)
+(defincf incf-svref/1 svref 1)
+(defincf incf-svref/0 svref 0)
+
+(defmacro def-test-cas (name init incf op)
+  `(progn
+     (defun ,name (n)
+       (declare (fixnum n))
+       (let* ((x ,init)
+	      (run nil)
+	      (threads
+	       (loop repeat 10
+		     collect (sb-thread:make-thread 
+			      (lambda () 
+				(loop until run)
+				(loop repeat n do (,incf x)))))))
+	 (setf run t)
+	 (dolist (th threads) 
+	   (sb-thread:join-thread th))
+	 (assert (= (,op x) (* 10 n)))))
+     (,name 200000)))
+
+(def-test-cas test-cas-car (cons 0 nil) incf-car car)
+(def-test-cas test-cas-cdr (cons nil 0) incf-cdr cdr)
+(def-test-cas test-cas-slot (make-cas-struct) incf-slot cas-struct-slot)
+(def-test-cas test-cas-value (let ((x '.x.))
+			       (set x 0)
+			       x)
+  incf-symbol-value symbol-value)
+(def-test-cas test-cas-svref/0 (vector 0 nil) incf-svref/0 (lambda (x)
+							     (svref x 0)))
+(def-test-cas test-cas-svref/1 (vector nil 0) incf-svref/1 (lambda (x)
+							     (svref x 1)))
+(format t "~&compare-and-swap tests done~%")
+
 (use-package :test-util)
 (use-package "ASSERTOID")