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authorFlorin Coras <fcoras@cisco.com>2022-03-11 10:58:55 -0800
committerDamjan Marion <dmarion@me.com>2022-03-14 22:03:37 +0000
commit41a1bbffc6238b0ed52b55f58ba884fe2f26e11f (patch)
treeea254eca7e168fcec23bc9bfcec43086974025c7 /src/vppinfra/vec_bootstrap.h
parent58fd481d73dce9c276facb42b9a9c3488c25417d (diff)
vppinfra: fix vec capacity
Rename vec_capacity to vec_mem_size as it returned the size of the underlying memory allocation not the number of bytes that can be used for vector elements. Add new vec_max_elts macro that returns number of elements that can fit into generic vector. Type: fix Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: I2e53a2bfa6e56a89af62d6ddc073ead58b8c49bb
Diffstat (limited to 'src/vppinfra/vec_bootstrap.h')
-rw-r--r--src/vppinfra/vec_bootstrap.h36
1 files changed, 25 insertions, 11 deletions
diff --git a/src/vppinfra/vec_bootstrap.h b/src/vppinfra/vec_bootstrap.h
index e14c4be8e52..f2940288110 100644
--- a/src/vppinfra/vec_bootstrap.h
+++ b/src/vppinfra/vec_bootstrap.h
@@ -160,19 +160,33 @@ u32 vec_len_not_inline (void *v);
#define vec_bytes(v) (vec_len (v) * sizeof (v[0]))
-/** \brief Total number of bytes that can fit in vector with current allocation. */
-
-#define vec_capacity(v,b) \
-({ \
- void * _vec_capacity_v = (void *) (v); \
- uword _vec_capacity_b = (b); \
- _vec_capacity_b = sizeof (vec_header_t) + _vec_round_size (_vec_capacity_b); \
- _vec_capacity_v ? clib_mem_size (_vec_capacity_v - _vec_capacity_b) : 0; \
-})
+/**
+ * Return size of memory allocated for the vector
+ *
+ * @param v vector
+ * @param b extra header bytes
+ * @return memory size allocated for the vector
+ */
+#define vec_mem_size(v, b) \
+ ({ \
+ void *_vec_mem_v = (void *) (v); \
+ uword _vec_mem_b = (b); \
+ _vec_mem_b = sizeof (vec_header_t) + _vec_round_size (_vec_mem_b); \
+ _vec_mem_v ? clib_mem_size (_vec_mem_v - _vec_mem_b) : 0; \
+ })
+
+/**
+ * Number of elements that can fit into generic vector
+ *
+ * @param v vector
+ * @param b extra header bytes
+ * @return number of elements that can fit into vector
+ */
+#define vec_max_elts(v, b) \
+ (v ? (vec_mem_size (v, b) - vec_header_bytes (b)) / sizeof (v[0]) : 0)
/** \brief Total number of elements that can fit into vector. */
-#define vec_max_len(v) \
- ((v) ? (vec_capacity (v,0) - vec_header_bytes (0)) / sizeof (v[0]) : 0)
+#define vec_max_len(v) vec_max_elts (v, 0)
/** \brief Set vector length to a user-defined value */
#ifndef __COVERITY__ /* Coverity gets confused by ASSERT() */