(in-package "SB!THREAD")
+;;; used bu debug-int.lisp to access interrupt contexts
+#!-sb-fluid (declaim (inline sb!vm::current-thread-offset-sap))
+(defun sb!vm::current-thread-offset-sap (n)
+ (declare (type (unsigned-byte 27) n))
+ (sb!sys:sap-ref-sap (alien-sap (extern-alien "all_threads" (* t)))
+ (* n 4)))
+
(defun current-thread-id ()
- (sb!sys:sap-int
- (sb!vm::current-thread-offset-sap sb!vm::thread-pid-slot)))
+ (sb!sys:sap-ref-32 (alien-sap (extern-alien "all_threads" (* t)))
+ (* sb!vm::thread-pid-slot 4)))
;;;; queues, locks
(setf old-value t1))))
(defmacro with-mutex ((mutex &key value (wait-p t)) &body body)
- (declare (ignore mutex value wait-p))
- `(progn ,@body))
+ (cond ((not wait-p)
+ `(unless (mutex-value ,mutex)
+ (unwind-protect
+ (progn
+ (setf (mutex-value ,mutex) (or ,value t))
+ ,@body)
+ (setf (mutex-value ,mutex) nil))))
+ (t
+ `(progn ,@body))))
;;; what's the best thing to do with these on unithread?
#+NIl