+;;; KLUDGE: These need to use DX-LET, because the cleanup form that
+;;; closes over GOT-IT causes a value-cell to be allocated for it --
+;;; and we prefer that to go on the stack since it can.
+(progn
+ (macrolet ((def (name &optional variant)
+ `(defun ,(if variant (symbolicate name "/" variant) name) (function mutex)
+ (declare (function function))
+ (flet ((%call-with-system-mutex ()
+ (dx-let (got-it)
+ (unwind-protect
+ (when (setf got-it (get-mutex mutex))
+ (funcall function))
+ (when got-it
+ (release-mutex mutex))))))
+ (declare (inline %call-with-system-mutex))
+ ,(ecase variant
+ (:without-gcing
+ `(without-gcing (%call-with-system-mutex)))
+ (:allow-with-interrupts
+ `(without-interrupts (allow-with-interrupts (%call-with-system-mutex))))
+ ((nil)
+ `(without-interrupts (%call-with-system-mutex))))))))
+ (def call-with-system-mutex)
+ (def call-with-system-mutex :without-gcing)
+ (def call-with-system-mutex :allow-with-interrupts))
+
+ (defun call-with-system-spinlock (function spinlock)
+ (declare (function function))
+ (without-interrupts
+ (dx-let (got-it)
+ (unwind-protect
+ (when (setf got-it (get-spinlock spinlock))
+ (funcall function))
+ (when got-it
+ (release-spinlock spinlock))))))
+
+ (macrolet ((def (name &optional variant)
+ `(defun ,(if variant (symbolicate name "/" variant) name) (function spinlock)
+ (declare (function function))
+ (flet ((%call-with-system-spinlock ()
+ (dx-let ((inner-lock-p (eq *current-thread* (spinlock-value spinlock)))
+ (got-it nil))
+ (unwind-protect
+ (when (or inner-lock-p (setf got-it (get-spinlock spinlock)))
+ (funcall function))
+ (when got-it
+ (release-spinlock spinlock))))))
+ (declare (inline %call-with-system-spinlock))
+ ,(ecase variant
+ (:without-gcing
+ `(without-gcing (%call-with-system-spinlock)))
+ ((nil)
+ `(without-interrupts (%call-with-system-spinlock))))))))
+ (def call-with-recursive-system-spinlock)
+ (def call-with-recursive-system-spinlock :without-gcing))
+
+ (defun call-with-spinlock (function spinlock)
+ (declare (function function))
+ (dx-let ((got-it nil))
+ (without-interrupts
+ (unwind-protect
+ (when (setf got-it (allow-with-interrupts
+ (get-spinlock spinlock)))
+ (with-local-interrupts (funcall function)))
+ (when got-it
+ (release-spinlock spinlock))))))
+
+ (defun call-with-mutex (function mutex value waitp)
+ (declare (function function))
+ (dx-let ((got-it nil))
+ (without-interrupts
+ (unwind-protect
+ (when (setq got-it (allow-with-interrupts
+ (get-mutex mutex value waitp)))
+ (with-local-interrupts (funcall function)))
+ (when got-it
+ (release-mutex mutex))))))
+
+ (defun call-with-recursive-lock (function mutex)
+ (declare (function function))
+ (dx-let ((inner-lock-p (eq (mutex-%owner mutex) *current-thread*))
+ (got-it nil))
+ (without-interrupts
+ (unwind-protect
+ (when (or inner-lock-p (setf got-it (allow-with-interrupts
+ (get-mutex mutex))))
+ (with-local-interrupts (funcall function)))
+ (when got-it
+ (release-mutex mutex))))))
+
+
+
+ (defun call-with-recursive-spinlock (function spinlock)
+ (declare (function function))
+ (dx-let ((inner-lock-p (eq (spinlock-value spinlock) *current-thread*))
+ (got-it nil))
+ (without-interrupts
+ (unwind-protect
+ (when (or inner-lock-p (setf got-it (allow-with-interrupts
+ (get-spinlock spinlock))))
+ (with-local-interrupts (funcall function)))
+ (when got-it
+ (release-spinlock spinlock)))))))