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-rw-r--r--src/vppinfra/vec.h15
1 files changed, 15 insertions, 0 deletions
diff --git a/src/vppinfra/vec.h b/src/vppinfra/vec.h
index 1fcb5f1a374..e8146af7098 100644
--- a/src/vppinfra/vec.h
+++ b/src/vppinfra/vec.h
@@ -209,6 +209,21 @@ _vec_resize_will_expand (void *v,
return 1;
}
+/** \brief Determine if vector will resize with next allocation
+
+ @param V pointer to a vector
+ @param N number of elements to add
+ @return 1 if vector will resize 0 otherwise
+*/
+
+#define vec_resize_will_expand(V, N) \
+ ({ \
+ word _v (n) = (N); \
+ word _v (l) = vec_len (V); \
+ _vec_resize_will_expand ((V), _v (n), \
+ (_v (l) + _v (n)) * sizeof ((V)[0]), 0, 0); \
+ })
+
/** \brief Predicate function, says whether the supplied vector is a clib heap
object (general version).