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authorDave Barach <dbarach@cisco.com>2018-05-03 08:26:39 -0400
committerDave Barach <openvpp@barachs.net>2018-05-18 12:14:55 +0000
commit01b2c23faecee4a60cccf8219bf37fa588009b8d (patch)
treef247c2ae2beec0a9770337511c8d187b64a5aac0 /src/vppinfra
parent6a4b97a6162994a5759ab1014fa2005439bb3ee3 (diff)
Harmonize vec/pool_get_aligned object sizes and alignment requests
Object sizes must evenly divide alignment requests, or vice versa. Otherwise, only the first object will be aligned as requested. Three choices: add CLIB_CACHE_LINE_ALIGN_MARK(align_me) at the end of structures, manually pad to an even divisor or multiple of the alignment request, or use plain vectors/pools. static assert for enforcement. Change-Id: I41aa6ff1a58267301d32aaf4b9cd24678ac1c147 Signed-off-by: Dave Barach <dbarach@cisco.com>
Diffstat (limited to 'src/vppinfra')
-rw-r--r--src/vppinfra/pool.h2
-rw-r--r--src/vppinfra/vec.h2
2 files changed, 4 insertions, 0 deletions
diff --git a/src/vppinfra/pool.h b/src/vppinfra/pool.h
index 14c6a75c13b..8b39a914eb5 100644
--- a/src/vppinfra/pool.h
+++ b/src/vppinfra/pool.h
@@ -190,6 +190,8 @@ do { \
pool_header_t * _pool_var (p) = pool_header (P); \
uword _pool_var (l); \
\
+ STATIC_ASSERT(A==0 || ((A % sizeof(P[0]))==0) || ((sizeof(P[0]) % A) == 0), \
+ "Pool aligned alloc of incorrectly sized object"); \
_pool_var (l) = 0; \
if (P) \
_pool_var (l) = vec_len (_pool_var (p)->free_indices); \
diff --git a/src/vppinfra/vec.h b/src/vppinfra/vec.h
index e2cb24c5ce7..a029630559c 100644
--- a/src/vppinfra/vec.h
+++ b/src/vppinfra/vec.h
@@ -411,6 +411,8 @@ do { \
#define vec_validate_ha(V,I,H,A) \
do { \
+ STATIC_ASSERT(A==0 || ((A % sizeof(V[0]))==0) || ((sizeof(V[0]) % A) == 0),\
+ "vector validate aligned on incorrectly sized object"); \
word _v(i) = (I); \
word _v(l) = vec_len (V); \
if (_v(i) >= _v(l)) \