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, 8 insertions, 0 deletions

diff --git a/src/vppinfra/types.h b/src/vppinfra/types.h
index 24dd5b30e02..e098db5fbaf 100644
--- a/src/vppinfra/types.h
+++ b/src/vppinfra/types.h
@@ -135,6 +135,14 @@ pointer_to_uword (const void *p)
   return (uword) (clib_address_t) p;
 }
 
+static inline __attribute__ ((always_inline)) uword
+pointer_is_aligned (void *p, uword align)
+{
+  if ((pointer_to_uword (p) & (align - 1)) == 0)
+    return 1;
+  return 0;
+}
+
 #define uword_to_pointer(u,type) ((type) (clib_address_t) (u))
 
 /* Any type: can be either word or pointer. */