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2020-06-08commit-slab: add a function to deep free entries on the slabLibravatar SZEDER Gábor1-0/+13
clear_##slabname() frees only the memory allocated for a commit slab itself, but entries in the commit slab might own additional memory outside the slab that should be freed as well. We already have (at least) one such commit slab, and this patch series is about to add one more. To free all additional memory owned by entries on the commit slab the user of such a slab could iterate over all commits it knows about, peek whether there is a valid entry associated with each commit, and free the additional memory, if any. Or it could rely on intimate knowledge about the internals of the commit slab implementation, and could itself iterate directly through all entries in the slab, and free the additional memory. Or it could just leak the additional memory... Introduce deep_clear_##slabname() to allow releasing memory owned by commit slab entries by invoking the 'void free_fn(elemtype *ptr)' function specified as parameter for each entry in the slab. Use it in get_shallow_commits() in 'shallow.c' to replace an open-coded iteration over a commit slab's entries. Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com> Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-10-24commit-slabs: move MAYBE_UNUSED outLibravatar Carlo Marcelo Arenas Belón1-2/+2
after 36da893114 ("config.mak.dev: enable -Wunused-function", 2018-10-18) it is expected to be used to prevent -Wunused-function warnings for code that was macro generated Signed-off-by: Carlo Marcelo Arenas Belón <carenas@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-06-29commit-slabs: remove realloc counter outside of slab structLibravatar Stefan Beller1-3/+0
The realloc counter is declared outside the struct for the given slabname, which makes it harder for a follow up patch to move the declaration of the struct around as then the counter variable would need special treatment. As the reallocation counter is currently unused we can just remove it. If we ever need to count the reallocations again, we can reintroduce the counter as part of 'struct slabname' in commit-slab-decl.h. Signed-off-by: Stefan Beller <sbeller@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-05-21commit-slab: support shared commit-slabLibravatar Nguyễn Thái Ngọc Duy1-8/+14
define_shared_commit_slab() could be used in a header file to define a commit-slab. One of these C files must include commit-slab-impl.h and "call" implement_shared_commit_slab(). Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-05-21commit-slab.h: code splitLibravatar Nguyễn Thái Ngọc Duy1-0/+91
The struct declaration and implementation macros are moved to commit-slab-hdr.h and commit-slab-impl.h respectively. This right now is not needed for current users but if we make a public commit-slab type, we may want to avoid including the slab implementation in a header file which gets replicated in every c file that includes it. Signed-off-by: Junio C Hamano <gitster@pobox.com>