X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fcode%2Fthread.lisp;h=1d751ac667a9243affd2cbdc524733bbf7f08a4f;hb=94e0f68a627ce839d59e88b4c8faad486e75af91;hp=fcf433b394ef91e9e23db8721dee0191533daa4f;hpb=f2847d6ed16e60390d000410d36ec7fb2570cdaf;p=sbcl.git

diff --git a/src/code/thread.lisp b/src/code/thread.lisp
index fcf433b..1d751ac 100644
--- a/src/code/thread.lisp
+++ b/src/code/thread.lisp
@@ -15,10 +15,30 @@
   #!+sb-doc
   "Mutex type."
   (name nil :type (or null simple-string))
-  (value nil)
+  (%owner nil :type (or null thread))
+  #!+(and (not sb-lutex) sb-thread)
+  (state 0 :type fixnum)
   #!+(and sb-lutex sb-thread)
   (lutex (make-lutex)))
 
+;;; FIXME: We probably want to rename the accessor MUTEX-OWNER.
+(defun mutex-value (mutex)
+  "Current owner of the mutex, NIL if the mutex is free."
+  (mutex-%owner mutex))
+
+(defsetf mutex-value set-mutex-value)
+
+(declaim (inline set-mutex-value))
+(defun set-mutex-value (mutex value)
+  (declare (ignore mutex value))
+  (error "~S is no longer supported." '(setf mutex-value)))
+
+(define-compiler-macro set-mutex-value (&whole form mutex value)
+  (declare (ignore mutex value))
+  (warn "~S is no longer supported, and will signal an error at runtime."
+        '(setf mutex-value))
+  form)
+
 (def!struct spinlock
   #!+sb-doc
   "Spinlock type."
@@ -91,6 +111,15 @@ provided the default value is used for the mutex."
         (without-interrupts
           (allow-with-interrupts (funcall function)))))
 
+  (defun call-with-system-spinlock (function spinlock &optional without-gcing-p)
+    (declare (ignore spinlock)
+             (function function))
+    (if without-gcing-p
+        (without-gcing
+          (funcall function))
+        (without-interrupts
+          (allow-with-interrupts (funcall function)))))
+
   (defun call-with-recursive-system-spinlock (function lock
                                               &optional without-gcing-p)
     (declare (ignore lock)
@@ -138,6 +167,21 @@ provided the default value is used for the mutex."
           (without-interrupts
             (allow-with-interrupts (%call-with-system-mutex))))))
 
+  (defun call-with-system-spinlock (function spinlock &optional without-gcing-p)
+    (declare (function function))
+    (flet ((%call-with-system-spinlock ()
+             (dx-let (got-it)
+               (unwind-protect
+                    (when (setf got-it (get-spinlock spinlock))
+                      (funcall function))
+                 (when got-it
+                   (release-spinlock spinlock))))))
+      (if without-gcing-p
+          (without-gcing
+            (%call-with-system-spinlock))
+          (without-interrupts
+            (allow-with-interrupts (%call-with-system-spinlock))))))
+
   (defun call-with-recursive-system-spinlock (function lock
                                               &optional without-gcing-p)
     (declare (function function))
@@ -179,7 +223,7 @@ provided the default value is used for the mutex."
 
   (defun call-with-recursive-lock (function mutex)
     (declare (function function))
-    (dx-let ((inner-lock-p (eq (mutex-value mutex) *current-thread*))
+    (dx-let ((inner-lock-p (eq (mutex-%owner mutex) *current-thread*))
              (got-it nil))
       (without-interrupts
         (unwind-protect