vppinfra: vector allocator rework

- support of in-place growth of vectors (if there is available space next to
  existing alloc)
- drops the need for alloc_aligned_at_offset from memory allocator,
  which allows easier swap to different memory allocator and reduces
  malloc overhead
- rework of pool and vec macros to inline functions to improve debuggability
- fix alignment - in many cases macros were not using native alignment
  of the particular datatype. Explicitly setting alignment with XXX_aligned()
  versions of the macro is not needed anymore in > 99% of cases
- fix ASAN usage
- avoid use of vector of voids, this was root cause of several bugs
  found in vec_* and pool_* function where sizeof() was used on voids
  instead of real vector data type
- introduce minimal alignment which is currently 8 bytes, vectors will
  be always aligned at least to that value (underlay allocator actually always
  provide 16-byte aligned allocs)

Type: improvement
Change-Id: I20f4b081bb13bbf7bc0ace85cc4e301787f12fdf
Signed-off-by: Damjan Marion <damarion@cisco.com>

1 files changed, 3 insertions, 5 deletions

diff --git a/src/vppinfra/sparse_vec.h b/src/vppinfra/sparse_vec.h
index 4bc2cbdeaea..6cab868a8b2 100644
--- a/src/vppinfra/sparse_vec.h
+++ b/src/vppinfra/sparse_vec.h
@@ -76,11 +76,9 @@ sparse_vec_new (uword elt_bytes, uword sparse_index_bits)
 
   ASSERT (sparse_index_bits <= 16);
 
-  v = _vec_resize ((void *) 0,
-		   /* length increment */ 8,
-		   /* data bytes */ 8 * elt_bytes,
-		   /* header bytes */ sizeof (h[0]),
-		   /* data align */ 0);
+  v = _vec_realloc (0, /* data bytes */ 8, elt_bytes,
+		    /* header bytes */ sizeof (h[0]), /* data align */ 0,
+		    /* heap */ 0);
 
   /* Make space for invalid entry (entry 0). */
   _vec_len (v) = 1;