To increase coverage of the multi-pack-index feature, add a GIT_TEST_MULTI_PACK_INDEX environment variable similar to other GIT_TEST_* variables.
After creating the environment variable and running the test suite with it enabled, I found a few bugs in the multi-pack-index implementation. These are handled by the first two patches. I have set up a CI build on Azure Pipelines [1] that runs the test suite with a few optional features enabled, including GIT_TEST_MULTI_PACK_INDEX and GIT_TEST_COMMIT_GRAPH. I'll use this to watch the features and ensure they work well with the rest of the ongoing work. Eventually, we can add these variables to the Travis CI scripts. [1] https://git.visualstudio.com/git/_build?definitionId=4 Derrick Stolee (3): midx: fix broken free() in close_midx() midx: close multi-pack-index on repack multi-pack-index: define GIT_TEST_MULTI_PACK_INDEX builtin/repack.c | 7 +++++-- midx.c | 26 ++++++++++++++++++++------ midx.h | 6 +++++- t/README | 4 ++++ t/t5310-pack-bitmaps.sh | 1 + t/t5319-multi-pack-index.sh | 2 +- t/t9300-fast-import.sh | 2 +- 7 files changed, 37 insertions(+), 11 deletions(-) base-commit: 5a0cc8aca797dbd7d2be3b67458ff880ed45cddf Published-As: https://github.com/gitgitgadget/git/releases/tags/pr-27%2Fderrickstolee%2Fmidx-test%2Fupstream-v2 Fetch-It-Via: git fetch https://github.com/gitgitgadget/git pr-27/derrickstolee/midx-test/upstream-v2 Pull-Request: https://github.com/gitgitgadget/git/pull/27 Range-diff vs v1: 1: 9fcbbe336d = 1: 8bd672fe26 midx: fix broken free() in close_midx() 2: 725ebadc92 ! 2: 2d8f26679d midx: close multi-pack-index on repack @@ -15,16 +15,15 @@ --- a/builtin/repack.c +++ b/builtin/repack.c @@ + char *fname, *fname_old; if (!midx_cleared) { - /* if we move a packfile, it will invalidated the midx */ -+ if (the_repository->objects) { -+ close_midx(the_repository->objects->multi_pack_index); -+ the_repository->objects->multi_pack_index = NULL; -+ } - clear_midx_file(get_object_directory()); +- /* if we move a packfile, it will invalidated the midx */ +- clear_midx_file(get_object_directory()); ++ clear_midx_file(the_repository); midx_cleared = 1; } + diff --git a/midx.c b/midx.c --- a/midx.c @@ -44,13 +43,34 @@ munmap((unsigned char *)m->data, m->data_len); close(m->fd); m->fd = -1; +@@ + return 0; + } + +-void clear_midx_file(const char *object_dir) ++void clear_midx_file(struct repository *r) + { +- char *midx = get_midx_filename(object_dir); ++ char *midx = get_midx_filename(r->objects->objectdir); ++ ++ if (r->objects && r->objects->multi_pack_index) { ++ close_midx(r->objects->multi_pack_index); ++ r->objects->multi_pack_index = NULL; ++ } + + if (remove_path(midx)) { + UNLEAK(midx); diff --git a/midx.h b/midx.h --- a/midx.h +++ b/midx.h @@ + int prepare_multi_pack_index_one(struct repository *r, const char *object_dir, int local); + int write_midx_file(const char *object_dir); - void clear_midx_file(const char *object_dir); +-void clear_midx_file(const char *object_dir); ++void clear_midx_file(struct repository *r); + int verify_midx_file(const char *object_dir); +void close_midx(struct multi_pack_index *m); + 3: 04e3e91082 = 3: 57c64e814c multi-pack-index: define GIT_TEST_MULTI_PACK_INDEX -- gitgitgadget
