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| author |   Dave Barach <dave@barachs.net> | 2017-02-06 09:28:03 -0500 |
|---|---|---|
| committer |   Damjan Marion <dmarion.lists@gmail.com> | 2017-02-06 23:34:56 +0000 |
| commit | 614ac5da53bca8c8fad5733e6749ec8753c52f28 (patch) | |
| tree | 86daea64a2865d5cb363f2735a4381b1a6b3952e /src/vppinfra/pool.h | |
| parent | 104543fa6a836df84b5b6d9b1909df3d5226a1e7 (diff) | |
Add pool_get[_aligned]_will_expand(...)
Change-Id: Iefffcf7843dc11803d69a875a72704a2543911a1
Signed-off-by: Dave Barach <dave@barachs.net>
Diffstat (limited to 'src/vppinfra/pool.h')
| -rw-r--r-- | src/vppinfra/pool.h | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/src/vppinfra/pool.h b/src/vppinfra/pool.h index e1c89e0a5fa..586d13e73a9 100644 --- a/src/vppinfra/pool.h +++ b/src/vppinfra/pool.h @@ -199,6 +199,33 @@ do { \ /** Allocate an object E from a pool P (unspecified alignment). */ #define pool_get(P,E) pool_get_aligned(P,E,0) +/** See if pool_get will expand the pool or not */ +#define pool_get_aligned_will_expand (P,YESNO,A) \ +do { \ + pool_header_t * _pool_var (p) = pool_header (P); \ + uword _pool_var (l); \ + \ + _pool_var (l) = 0; \ + if (P) \ + _pool_var (l) = vec_len (_pool_var (p)->free_indices); \ + \ + /* Free elements, certainly won't expand */ \ + if (_pool_var (l) > 0) \ + YESNO=0; \ + else \ + { \ + /* Nothing on free list, make a new element and return it. */ \ + YESNO = _vec_resize_will_expand \ + (P, \ + /* length_increment */ 1, \ + /* new size */ (vec_len (P) + 1) * sizeof (P[0]), \ + pool_aligned_header_bytes, \ + /* align */ (A)); \ + } \ +} while (0) + +#define pool_get_will_expand(P,YESNO) pool_get_aligned_will_expand(P,YESNO,0) + /** Use free bitmap to query whether given element is free. */ #define pool_is_free(P,E) \ ({ \ |