commit | 8e16effe97f9963a77aa977a38318d8a50d96312 | [log] [tgz] |
---|---|---|
author | Rafael Silva <rafaeloliveira.cs@gmail.com> | Wed Feb 17 15:54:43 2021 +0100 |
committer | Junio C Hamano <gitster@pobox.com> | Wed Feb 17 11:04:17 2021 -0800 |
tree | 4f46511642aaa737081e70d9574e251379e248ad | |
parent | 59ec22464f6c2b170b05f287e00740ea2288fe5c [diff] |
blame: remove unnecessary use of get_commit_info() When `git blame --color-by-age`, the determine_line_heat() is called to select how to color the output based on the commit's author date. It uses the get_commit_info() to parse the information into a `commit_info` structure, however, this is actually unnecessary because the determine_line_heat() caller also does the same. Instead, let's change the determine_line_heat() to take a `commit_info` structure and remove the internal call to get_commit_info() thus cleaning up and optimizing the code path. Enabling Git's trace2 API in order to record the execution time for every call to determine_line_heat() function: + trace2_region_enter("blame", "determine_line_heat", the_repository); determine_line_heat(ent, &default_color); + trace2_region_enter("blame", "determine_line_heat", the_repository); Then, running `git blame` for "kernel/fork.c" in linux.git and summing all the execution time for every call (around 1.3k calls) resulted in 2.6x faster execution (best out 3): git built from 328c109303 (The eighth batch, 2021-02-12) = 42ms git built from 328c109303 + this change = 16ms Signed-off-by: Rafael Silva <rafaeloliveira.cs@gmail.com> Reviewed-by: Taylor Blau <me@ttaylorr.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
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