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authorLibravatar Jameson Miller <jamill@microsoft.com>2018-07-02 19:49:34 +0000
committerLibravatar Junio C Hamano <gitster@pobox.com>2018-07-03 10:58:27 -0700
commit158dfeff3dc1d155b84e68b265a9b6c265717e1e (patch)
treebc4f3dee7fa51f28ea50645d59668a59799c2899 /t/t4018/cpp-function-returning-nested
parentmem-pool: only search head block for available space (diff)
downloadtgif-158dfeff3dc1d155b84e68b265a9b6c265717e1e.tar.xz
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 <jamill@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
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