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-rw-r--r--src/vppinfra/pool.h27
1 files changed, 27 insertions, 0 deletions
diff --git a/src/vppinfra/pool.h b/src/vppinfra/pool.h
index e1c89e0a5fa..586d13e73a9 100644
--- a/src/vppinfra/pool.h
+++ b/src/vppinfra/pool.h
@@ -199,6 +199,33 @@ do { \
/** Allocate an object E from a pool P (unspecified alignment). */
#define pool_get(P,E) pool_get_aligned(P,E,0)
+/** See if pool_get will expand the pool or not */
+#define pool_get_aligned_will_expand (P,YESNO,A) \
+do { \
+ pool_header_t * _pool_var (p) = pool_header (P); \
+ uword _pool_var (l); \
+ \
+ _pool_var (l) = 0; \
+ if (P) \
+ _pool_var (l) = vec_len (_pool_var (p)->free_indices); \
+ \
+ /* Free elements, certainly won't expand */ \
+ if (_pool_var (l) > 0) \
+ YESNO=0; \
+ else \
+ { \
+ /* Nothing on free list, make a new element and return it. */ \
+ YESNO = _vec_resize_will_expand \
+ (P, \
+ /* length_increment */ 1, \
+ /* new size */ (vec_len (P) + 1) * sizeof (P[0]), \
+ pool_aligned_header_bytes, \
+ /* align */ (A)); \
+ } \
+} while (0)
+
+#define pool_get_will_expand(P,YESNO) pool_get_aligned_will_expand(P,YESNO,0)
+
/** Use free bitmap to query whether given element is free. */
#define pool_is_free(P,E) \
({ \