;;; Of the WITH-PINNED-OBJECTS in this file, not every single one is
;;; necessary because threads are only supported with the conservative
;;; gencgc and numbers on the stack (returned by GET-LISP-OBJ-ADDRESS)
-;;; are treated as references. In fact, I think there isn't one that's
-;;; truly important as of now.
+;;; are treated as references.
;;; set the doc here because in early-thread FDOCUMENTATION is not
;;; available, yet
;;;; spinlocks
-(defstruct spinlock
- #!+sb-doc
- "Spinlock type."
- (name nil :type (or null simple-string))
- (value 0))
-
(declaim (inline get-spinlock release-spinlock))
;;; The bare 2 here and below are offsets of the slots in the struct.
;;; There ought to be some better way to get these numbers
-(defun get-spinlock (spinlock new-value)
+(defun get-spinlock (spinlock)
(declare (optimize (speed 3) (safety 0))
#!-sb-thread
(ignore spinlock new-value))
;; store any value
#!+sb-thread
(loop until
- (eql (sb!vm::%instance-set-conditional spinlock 2 0 new-value) 0)))
+ (eql (sb!vm::%instance-set-conditional spinlock 2 0 1) 0)))
(defun release-spinlock (spinlock)
(declare (optimize (speed 3) (safety 0))
(defmacro with-spinlock ((spinlock) &body body)
(sb!int:with-unique-names (lock)
`(let ((,lock ,spinlock))
- (get-spinlock ,lock *current-thread*)
+ (get-spinlock ,lock)
(unwind-protect
(progn ,@body)
(release-spinlock ,lock)))))
;;;; mutexes
-(defstruct mutex
- #!+sb-doc
- "Mutex type."
- (name nil :type (or null simple-string))
- (value nil))
-
#!+sb-doc
(setf (sb!kernel:fdocumentation 'make-mutex 'function)
"Create a mutex."
;; reference to this thread
(handle-thread-exit thread)))))))
(values))))
- (let ((os-thread
- (with-pinned-objects (initial-function)
+ ;; Keep INITIAL-FUNCTION pinned until the child thread is
+ ;; initialized properly.
+ (with-pinned-objects (initial-function)
+ (let ((os-thread
(%create-thread
- (sb!kernel:get-lisp-obj-address initial-function)))))
- (when (zerop os-thread)
- (error "Can't create a new thread"))
- (wait-on-semaphore setup-sem)
- thread)))
+ (sb!kernel:get-lisp-obj-address initial-function))))
+ (when (zerop os-thread)
+ (error "Can't create a new thread"))
+ (wait-on-semaphore setup-sem)
+ thread))))
(defun destroy-thread (thread)
#!+sb-doc