" stwcx. %2, 0, %3\n"
" bne- 1b\n"
"2:"
- :"=r" (result)
+ :"=&r" (result)
:"r" (o), "r" (n), "r" (p)
+ :"cc", "memory"
);
return result;
#else
* that require it (not x86 or x86_64).
*/
INLINE_HEADER void
-wb(void) {
+write_barrier(void) {
#if i386_HOST_ARCH || x86_64_HOST_ARCH
__asm__ __volatile__ ("" : : : "memory");
#elif powerpc_HOST_ARCH
{
#if i386_HOST_ARCH || x86_64_HOST_ARCH || powerpc_HOST_ARCH
// This is a strictly ordered write, so we need a wb():
- wb();
+ write_barrier();
p->header.info = info;
#else
RELEASE_SM_LOCK;
#else /* !THREADED_RTS */
-#define wb() /* nothing */
+#define write_barrier() /* nothing */
INLINE_HEADER StgWord
xchg(StgPtr p, StgWord w)
return old;
}
+INLINE_HEADER StgInfoTable *
+lockClosure(StgClosure *p)
+{ return (StgInfoTable *)p->header.info; }
+
+INLINE_HEADER void
+unlockClosure(StgClosure *p STG_UNUSED, StgInfoTable *info STG_UNUSED)
+{ /* nothing */ }
+
#endif /* !THREADED_RTS */
+// Handy specialised versions of lockClosure()/unlockClosure()
+INLINE_HEADER void lockTSO(StgTSO *tso)
+{ lockClosure((StgClosure *)tso); }
+
+INLINE_HEADER void unlockTSO(StgTSO *tso)
+{ unlockClosure((StgClosure*)tso, (StgInfoTable*)&stg_TSO_info); }
+
#endif /* SMP_H */