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From: Taylor Blau <me@ttaylorr.com>
To: Derrick Stolee via GitGitGadget <gitgitgadget@gmail.com>
Cc: git@vger.kernel.org, me@ttaylorr.com, jnareb@gmail.com,
	garimasigit@gmail.com, Derrick Stolee <dstolee@microsoft.com>
Subject: Re: [PATCH v2 2/4] commit: write commit-graph with Bloom filters
Date: Mon, 13 Apr 2020 10:12:45 -0600	[thread overview]
Message-ID: <20200413161245.GE59601@syl.local> (raw)
In-Reply-To: <7e8f1aed1138ab2a52a8957ac95895ac9effd933.1586789126.git.gitgitgadget@gmail.com>

On Mon, Apr 13, 2020 at 02:45:24PM +0000, Derrick Stolee via GitGitGadget wrote:
> From: Derrick Stolee <dstolee@microsoft.com>
>
> The GIT_TEST_COMMIT_GRAPH environment variable updates the commit-
> graph file whenever "git commit" is run, ensuring that we always
> have an updated commit-graph throughout the test suite. The
> GIT_TEST_COMMIT_GRAPH_CHANGED_PATHS environment variable was
> introduced to write the changed-path Bloom filters whenever "git
> commit-graph write" is run. However, the GIT_TEST_COMMIT_GRAPH
> trick doesn't launch a separate process and instead writes it
> directly.
>
> Update the "git commit" builtin to write changed-path Bloom filters
> when both GIT_TEST_COMMIT_GRAPH and GIT_TEST_COMMIT_GRAPH_CHANGED_PATHS
> are enabled.
>
> Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
> ---
>  commit-graph.c | 2 ++
>  1 file changed, 2 insertions(+)
>
> diff --git a/commit-graph.c b/commit-graph.c
> index 77668629e27..3e8f36ce5c8 100644
> --- a/commit-graph.c
> +++ b/commit-graph.c
> @@ -1968,6 +1968,8 @@ int write_commit_graph(struct object_directory *odb,
>  	ctx->check_oids = flags & COMMIT_GRAPH_WRITE_CHECK_OIDS ? 1 : 0;
>  	ctx->split_opts = split_opts;
>  	ctx->changed_paths = flags & COMMIT_GRAPH_WRITE_BLOOM_FILTERS ? 1 : 0;
> +	if (git_env_bool(GIT_TEST_COMMIT_GRAPH_CHANGED_PATHS, 0))
> +		ctx->changed_paths = 1;

Hmm. I'm not crazy about a library function looking at 'GIT_TEST_*'
environment variables and potentially ignoring its arguments, but given
the discussion we had in v1, I don't feel strongly enough to recommend
that you change this.

For what it's worth, I think that 'write_commit_graph' could behave more
purely if callers checked 'GIT_TEST_COMMIT_GRAPH_CHANGED_PATHS' and set
'flags' appropriately from the outside, but I can understand also why
it's preferred to do it in this style, too.

>  	ctx->total_bloom_filter_data_size = 0;
>
>  	if (ctx->split) {
> --
> gitgitgadget
>

Thanks,
Taylor

  reply	other threads:[~2020-04-13 16:12 UTC|newest]

Thread overview: 48+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-04-11  1:02 [PATCH 0/3] Integrate changed-path Bloom filters with 'git blame' Derrick Stolee via GitGitGadget
2020-04-11  1:02 ` [PATCH 1/3] revision: complicated pathspecs disable filters Derrick Stolee via GitGitGadget
2020-04-11 21:40   ` Junio C Hamano
2020-04-13 11:49     ` Derrick Stolee
2020-04-14 18:25       ` Junio C Hamano
2020-04-15 13:27         ` Derrick Stolee
2020-04-15 18:37           ` Derrick Stolee
2020-04-15 19:32             ` Junio C Hamano
2020-04-15 19:39               ` Junio C Hamano
2020-04-15 21:25             ` Junio C Hamano
2020-04-16  0:56               ` Taylor Blau
2020-04-15 22:18             ` Jakub Narębski
2020-04-16  0:52               ` Taylor Blau
2020-04-16 13:26                 ` Derrick Stolee
2020-04-16 16:33                   ` Taylor Blau
2020-04-16 18:02                     ` Junio C Hamano
2020-04-12 22:22   ` Taylor Blau
2020-04-12 22:30     ` Junio C Hamano
2020-04-13  0:07       ` Taylor Blau
2020-04-13 11:54         ` Derrick Stolee
2020-04-11  1:03 ` [PATCH 2/3] commit: write commit-graph with bloom filters Derrick Stolee via GitGitGadget
2020-04-11 21:57   ` Junio C Hamano
2020-04-12 20:51     ` Taylor Blau
2020-04-13 12:08       ` Derrick Stolee
2020-04-13 22:11         ` Junio C Hamano
2020-04-11  1:03 ` [PATCH 3/3] blame: use changed-path Bloom filters Derrick Stolee via GitGitGadget
2020-04-11 22:03   ` Junio C Hamano
2020-04-12  7:39     ` Eric Sunshine
2020-04-11 21:30 ` [PATCH 0/3] Integrate changed-path Bloom filters with 'git blame' Junio C Hamano
2020-04-13 14:45 ` [PATCH v2 0/4] " Derrick Stolee via GitGitGadget
2020-04-13 14:45   ` [PATCH v2 1/4] revision: complicated pathspecs disable filters Derrick Stolee via GitGitGadget
2020-04-13 16:09     ` Taylor Blau
2020-04-13 22:18       ` Junio C Hamano
2020-04-13 14:45   ` [PATCH v2 2/4] commit: write commit-graph with Bloom filters Derrick Stolee via GitGitGadget
2020-04-13 16:12     ` Taylor Blau [this message]
2020-04-13 22:21       ` Junio C Hamano
2020-04-14 15:04         ` Derrick Stolee
2020-04-14 17:26           ` Junio C Hamano
2020-04-14 17:40             ` Derrick Stolee
2020-04-15  0:17               ` Taylor Blau
2020-04-13 14:45   ` [PATCH v2 3/4] commit-graph: write commit-graph in more tests Derrick Stolee via GitGitGadget
2020-04-13 14:45   ` [PATCH v2 4/4] blame: use changed-path Bloom filters Derrick Stolee via GitGitGadget
2020-04-13 16:21   ` [PATCH v2 0/4] Integrate changed-path Bloom filters with 'git blame' Taylor Blau
2020-04-16 20:14   ` [PATCH v3 0/3] " Derrick Stolee via GitGitGadget
2020-04-16 20:14     ` [PATCH v3 1/3] revision: complicated pathspecs disable filters Derrick Stolee via GitGitGadget
2020-06-07 20:33       ` SZEDER Gábor
2020-04-16 20:14     ` [PATCH v3 2/3] tests: write commit-graph with Bloom filters Derrick Stolee via GitGitGadget
2020-04-16 20:14     ` [PATCH v3 3/3] blame: use changed-path " Derrick Stolee via GitGitGadget

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