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src/share/vm/gc/g1/g1CollectedHeap.inline.hpp
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@@ -302,6 +302,23 @@
set_humongous_reclaim_candidate(region, false);
_in_cset_fast_test.clear_humongous(region);
}
}
+bool G1CollectedHeap::requires_marking(const void* entry) const {
+ // Includes rejection of NULL pointers.
+ assert(is_in_reserved(entry),
+ "Non-heap pointer in SATB buffer: " PTR_FORMAT, p2i(entry));
+
+ HeapRegion* region = heap_region_containing(entry);
+ assert(region != NULL, "No region for " PTR_FORMAT, p2i(entry));
+ if (entry >= region->next_top_at_mark_start()) {
+ return false;
+ }
+
+ assert(((oop)entry)->is_oop(true /* ignore mark word */),
+ "Invalid oop in SATB buffer: " PTR_FORMAT, p2i(entry));
+
+ return ! isMarkedNext((oop) entry);
+}
+
#endif // SHARE_VM_GC_G1_G1COLLECTEDHEAP_INLINE_HPP
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