From: Florin Coras <fcoras@cisco.com>
Date: Wed, 28 Nov 2018 01:11:37 +0000 (-0800)
Subject: vppinfra: add pool_dup macro
X-Git-Tag: v19.04-rc0~285
X-Git-Url: https://gerrit.fd.io/r/gitweb?p=vpp.git;a=commitdiff_plain;h=8be6c40cf39f0d637a9dbfaa40ccec1d72bff34a

vppinfra: add pool_dup macro

Change-Id: I192e340bd072d27bf6ddc382347ad5c3ca411bad
Signed-off-by: Florin Coras <fcoras@cisco.com>
---

diff --git a/src/vppinfra/pool.h b/src/vppinfra/pool.h
index 75d4c95ce11..47bae07add0 100644
--- a/src/vppinfra/pool.h
+++ b/src/vppinfra/pool.h
@@ -340,6 +340,41 @@ do {									\
 /** Allocate N more free elements to pool (unspecified alignment). */
 #define pool_alloc(P,N) pool_alloc_aligned(P,N,0)
 
+/**
+ * Return copy of pool with alignment
+ *
+ * @param P pool to copy
+ * @param A alignment (may be zero)
+ * @return copy of pool
+ */
+#define pool_dup_aligned(P,A)						\
+({									\
+  typeof (P) _pool_var (new) = 0;					\
+  pool_header_t * _pool_var (ph), * _pool_var (new_ph);			\
+  u32 _pool_var (n) = pool_len (P);					\
+  _pool_var (new) = _vec_resize (_pool_var (new), _pool_var (n),	\
+				 _pool_var (n) * sizeof ((P)[0]), 	\
+				 pool_aligned_header_bytes, (A));	\
+  clib_memcpy_fast (_pool_var (new), (P), 				\
+		    _pool_var (n) * sizeof ((P)[0]));			\
+  _pool_var (ph) = pool_header (P);					\
+  _pool_var (new_ph) = pool_header (_pool_var (new));			\
+  _pool_var (new_ph)->free_bitmap = 					\
+    clib_bitmap_dup (_pool_var (ph)->free_bitmap);			\
+  _pool_var (new_ph)->free_indices = 					\
+    vec_dup (_pool_var (ph)->free_indices);				\
+  _pool_var (new_ph)->max_elts = _pool_var (ph)->max_elts;		\
+  _pool_var (new);							\
+})
+
+/**
+ * Return copy of pool without alignment
+ *
+ * @param P pool to copy
+ * @return copy of pool
+ */
+#define pool_dup(P) pool_dup_aligned(P, 0)
+
 /** Low-level free pool operator (do not call directly). */
 always_inline void *
 _pool_free (void *v)