X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fruntime%2Fx86-arch.h;h=1200ef1435578ad196bda0a0be0f7535799360bd;hb=0285aa5ff8416027932daa001b84429be2ca559b;hp=1a51e6b43162bab7a7279071ac756af84b5bd4cd;hpb=4d633465231c79adeb3e4e59bf30c011d1d0e9dd;p=sbcl.git

diff --git a/src/runtime/x86-arch.h b/src/runtime/x86-arch.h
index 1a51e6b..1200ef1 100644
--- a/src/runtime/x86-arch.h
+++ b/src/runtime/x86-arch.h
@@ -18,7 +18,8 @@
  * here? (The answer wasn't obvious to me when merging the
  * architecture-abstracting patches for CSR's SPARC port. -- WHN 2002-02-15) */
 
-#include "interr.h"
+#define COMPILER_BARRIER \
+    do { __asm__ __volatile__ ( "" : : : "memory"); } while (0)
 
 static inline void
 get_spinlock(volatile lispobj *word, unsigned long value)
@@ -51,11 +52,12 @@ get_spinlock(volatile lispobj *word, unsigned long value)
 static inline void
 release_spinlock(volatile lispobj *word)
 {
+    /* See comment in RELEASE-SPINLOCK in target-thread.lisp. */
+    COMPILER_BARRIER;
     *word=0;
+    COMPILER_BARRIER;
 }
 
-#include <stdio.h>
-
 static inline lispobj
 swap_lispobjs(volatile lispobj *dest, lispobj value)
 {