StgClosurePtr stolen;
StgWord b,t;
- ASSERT_SPARK_POOL_INVARIANTS(deque);
+// Can't do this on someone else's spark pool:
+// ASSERT_SPARK_POOL_INVARIANTS(deque);
b = deque->bottom;
t = deque->top;
+
if (b - t <= 0 ) {
return NULL; /* already looks empty, abort */
}
return NULL;
} /* else: OK, top has been incremented by the cas call */
- ASSERT_SPARK_POOL_INVARIANTS(deque);
+// Can't do this on someone else's spark pool:
+// ASSERT_SPARK_POOL_INVARIANTS(deque);
+
/* return stolen element */
return stolen;
}
/* INVARIANTS, in this order: reasonable size,
- topBound consistent, space pointer, space accessible to us */
+ topBound consistent, space pointer, space accessible to us.
+
+ NB. This is safe to use only (a) on a spark pool owned by the
+ current thread, or (b) when there's only one thread running, or no
+ stealing going on (e.g. during GC).
+*/
#define ASSERT_SPARK_POOL_INVARIANTS(p) \
ASSERT((p)->size > 0); \
ASSERT((p)->topBound <= (p)->top); \