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-rw-r--r--erts/emulator/beam/erl_term.h15
1 files changed, 13 insertions, 2 deletions
diff --git a/erts/emulator/beam/erl_term.h b/erts/emulator/beam/erl_term.h
index a602a8f7c6..097d580d99 100644
--- a/erts/emulator/beam/erl_term.h
+++ b/erts/emulator/beam/erl_term.h
@@ -873,6 +873,12 @@ typedef union {
ErtsORefThing o;
} ErtsRefThing;
+/* for copy sharing */
+#define BOXED_VISITED_MASK ((Eterm) 3)
+#define BOXED_VISITED ((Eterm) 1)
+#define BOXED_SHARED_UNPROCESSED ((Eterm) 2)
+#define BOXED_SHARED_PROCESSED ((Eterm) 3)
+
#define ERTS_REF_THING_SIZE (sizeof(ErtsORefThing)/sizeof(Uint))
#define ERTS_MAGIC_REF_THING_SIZE (sizeof(ErtsMRefThing)/sizeof(Uint))
#define ERTS_MAX_INTERNAL_REF_SIZE (sizeof(ErtsRefThing)/sizeof(Uint))
@@ -888,9 +894,14 @@ typedef union {
# define is_ref_thing_header(x) ((x) == ERTS_REF_THING_HEADER)
-#define is_ordinary_ref_thing(x) \
- (ASSERT(is_ref_thing_header(*((Eterm *)(x)))), \
+#ifdef SHCOPY
+#define is_ordinary_ref_thing(x) \
+ (((ErtsRefThing *) (x))->o.marker == ERTS_ORDINARY_REF_MARKER)
+#else
+#define is_ordinary_ref_thing(x) \
+ (ASSERT(is_ref_thing_header((*((Eterm *)(x))) & ~BOXED_VISITED_MASK)), \
((ErtsRefThing *) (x))->o.marker == ERTS_ORDINARY_REF_MARKER)
+#endif
#define is_magic_ref_thing(x) \
(!is_ordinary_ref_thing((x)))