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author | Derrick Stolee <dstolee@microsoft.com> | 2018-04-25 14:37:55 +0000 |
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committer | Junio C Hamano <gitster@pobox.com> | 2018-05-22 12:36:25 +0900 |
commit | 83073cc994cc3cd364f3f213478b9162476e8e44 (patch) | |
tree | e5b239f23a72baa58e0dd3a76f8fc391a6ca2fb1 /bundle.h | |
parent | ref-filter: fix outdated comment on in_commit_list (diff) | |
download | tgif-83073cc994cc3cd364f3f213478b9162476e8e44.tar.xz |
commit: add generation number to struct commit
The generation number of a commit is defined recursively as follows:
* If a commit A has no parents, then the generation number of A is one.
* If a commit A has parents, then the generation number of A is one
more than the maximum generation number among the parents of A.
Add a uint32_t generation field to struct commit so we can pass this
information to revision walks. We use three special values to signal
the generation number is invalid:
GENERATION_NUMBER_INFINITY 0xFFFFFFFF
GENERATION_NUMBER_MAX 0x3FFFFFFF
GENERATION_NUMBER_ZERO 0
The first (_INFINITY) means the generation number has not been loaded or
computed. The second (_MAX) means the generation number is too large to
store in the commit-graph file. The third (_ZERO) means the generation
number was loaded from a commit graph file that was written by a version
of git that did not support generation numbers.
Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'bundle.h')
0 files changed, 0 insertions, 0 deletions