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commit-graph: return 64-bit generation number

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In a preparatory step for introducing corrected commit dates, let's
return timestamp_t values from commit_graph_generation(), use
timestamp_t for local variables and define GENERATION_NUMBER_INFINITY
as (2 ^ 63 - 1) instead.

We rename GENERATION_NUMBER_MAX to GENERATION_NUMBER_V1_MAX to
represent the largest topological level we can store in the commit data
chunk.

With corrected commit dates implemented, we will have two such *_MAX
variables to denote the largest offset and largest topological level
that can be stored.

Signed-off-by: Abhishek Kumar <abhishekkumar8222@gmail.com>
Reviewed-by: Taylor Blau <me@ttaylorr.com>
Reviewed-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Abhishek Kumar
2021-01-16 18:11:13 +00:00
committed by Junio C Hamano
parent 72a2bfcaf0
commit d7f92784c6
8 changed files with 42 additions and 42 deletions
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4
commit-graph.h
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@ -145,12 +145,12 @@ void disable_commit_graph(struct repository *r);
struct commit_graph_data {
uint32_t graph_pos;
uint32_t generation;
timestamp_t generation;
};
/*
* Commits should be parsed before accessing generation, graph positions.
*/
uint32_t commit_graph_generation(const struct commit *);
timestamp_t commit_graph_generation(const struct commit *);
uint32_t commit_graph_position(const struct commit *);
#endif