From 158dfeff3dc1d155b84e68b265a9b6c265717e1e Mon Sep 17 00:00:00 2001 From: Jameson Miller Date: Mon, 2 Jul 2018 19:49:34 +0000 Subject: mem-pool: add life cycle management functions Add initialization and discard functions to mem_pool type. As the memory allocated by mem_pool can now be freed, we also track the large allocations. If the there are existing mp_blocks in the mem_poo's linked list of mp_blocksl, then the mp_block for a large allocation is inserted behind the head block. This is because only the head mp_block is considered when searching for availble space. This results in the following desirable properties: 1) The mp_block allocated for the large request will not be included not included in the search for available in future requests, the large mp_block is sized for the specific request and does not contain any spare space. 2) The head mp_block will not bumped from considation for future memory requests just because a request for a large chunk of memory came in. These changes are in preparation for a future commit that will utilize creating and discarding memory pool. Signed-off-by: Jameson Miller Signed-off-by: Junio C Hamano --- mem-pool.h | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'mem-pool.h') diff --git a/mem-pool.h b/mem-pool.h index 829ad58ecf..f75b3365d5 100644 --- a/mem-pool.h +++ b/mem-pool.h @@ -21,6 +21,16 @@ struct mem_pool { size_t pool_alloc; }; +/* + * Initialize mem_pool with specified initial size. + */ +void mem_pool_init(struct mem_pool **mem_pool, size_t initial_size); + +/* + * Discard a memory pool and free all the memory it is responsible for. + */ +void mem_pool_discard(struct mem_pool *mem_pool); + /* * Alloc memory from the mem_pool. */ -- cgit v1.2.3