{
#if i386_HOST_ARCH || x86_64_HOST_ARCH
__asm__ __volatile__ (
- "lock/cmpxchg %3,%1"
+ "lock\ncmpxchg %3,%1"
:"=a"(o), "=m" (*(volatile unsigned int *)p)
:"0" (o), "r" (n));
return o;
// spin locks to check for contention.
// acquire spin lock
-INLINE_HEADER void acquireSpinLock(StgSync * p)
+INLINE_HEADER void ACQUIRE_SPIN_LOCK(StgSync * p)
{
StgWord32 r = 0;
do {
}
// release spin lock
-INLINE_HEADER void releaseSpinLock(StgSync * p)
+INLINE_HEADER void RELEASE_SPIN_LOCK(StgSync * p)
{
write_barrier();
p->lock = 1;
#else
// acquire spin lock
-INLINE_HEADER void acquireSpinLock(StgSync * p)
+INLINE_HEADER void ACQUIRE_SPIN_LOCK(StgSync * p)
{
StgWord32 r = 0;
do {
}
// release spin lock
-INLINE_HEADER void releaseSpinLock(StgSync * p)
+INLINE_HEADER void RELEASE_SPIN_LOCK(StgSync * p)
{
write_barrier();
(*p) = 1;
unlockClosure(StgClosure *p STG_UNUSED, StgInfoTable *info STG_UNUSED)
{ /* nothing */ }
-INLINE_HEADER void acquireSpinLock(void * p STG_UNUSED)
-{ /* nothing */ }
-
-INLINE_HEADER void releaseSpinLock(void * p STG_UNUSED)
-{ /* nothing */ }
+// Using macros here means we don't have to ensure the argument is in scope
+#define ACQUIRE_SPIN_LOCK(p) /* nothing */
+#define RELEASE_SPIN_LOCK(p) /* nothing */
INLINE_HEADER void initSpinLock(void * p STG_UNUSED)
{ /* nothing */ }