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-rw-r--r--rts/sm/HeapAlloc.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/rts/sm/HeapAlloc.h b/rts/sm/HeapAlloc.h
index b9f7c468be..32210d1297 100644
--- a/rts/sm/HeapAlloc.h
+++ b/rts/sm/HeapAlloc.h
@@ -10,6 +10,14 @@
#include "BeginPrivate.h"
+#if defined(THREADED_RTS)
+// needed for HEAP_ALLOCED below
+extern SpinLock gc_alloc_block_sync;
+#endif
+
+#define ACQUIRE_ALLOC_BLOCK_SPIN_LOCK() ACQUIRE_SPIN_LOCK(&gc_alloc_block_sync)
+#define RELEASE_ALLOC_BLOCK_SPIN_LOCK() RELEASE_SPIN_LOCK(&gc_alloc_block_sync)
+
/* -----------------------------------------------------------------------------
The HEAP_ALLOCED() test.