From: Tomi Ollila <tomi.ollila@iki.fi>
To: David Bremner <david@tethera.net>, notmuch@notmuchmail.org
Cc: David Bremner <david@tethera.net>
Subject: Re: [PATCH] test: Fix race condition in T568-lib-thread.sh
Date: Mon, 15 Feb 2021 22:24:29 +0200 [thread overview]
Message-ID: <m2blclaxky.fsf@guru.guru-group.fi> (raw)
In-Reply-To: <20210215005555.4038380-1-david@tethera.net>
On Sun, Feb 14 2021, David Bremner wrote:
> The assignment of thread-ids is (apparently) non-deterministic in a
> way that mostly seems to show up on multicore machines. In my tests
> the number is different from that previously assumed by this test
> about 15% of the time on a 50 thread (25 core) Xeon.
>
> Since message id's are fixed, use a message known to be in the thread
> of interest to pick out the correct thread-id.
LGTM.
Tomi
> ---
> test/T568-lib-thread.sh | 10 ++++++++--
> 1 file changed, 8 insertions(+), 2 deletions(-)
>
> diff --git a/test/T568-lib-thread.sh b/test/T568-lib-thread.sh
> index ac13d986..088e66dd 100755
> --- a/test/T568-lib-thread.sh
> +++ b/test/T568-lib-thread.sh
> @@ -8,6 +8,11 @@ add_email_corpus
> test_begin_subtest "building database"
> test_expect_success "NOTMUCH_NEW"
>
> +test_begin_subtest "finding thread"
> +THREAD=$(notmuch search --output=threads id:20091117190054.GU3165@dottiness.seas.harvard.edu)
> +count=$(notmuch count $THREAD)
> +test_expect_equal "$count" "7"
> +
> cat <<'EOF' > c_tail
> if (stat) {
> const char *stat_str = notmuch_database_status_string (db);
> @@ -30,7 +35,7 @@ int main (int argc, char** argv)
> notmuch_thread_t *thread = NULL;
> notmuch_threads_t *threads = NULL;
> notmuch_query_t *query = NULL;
> - const char *id = "thread:0000000000000009";
> + const char *id = "${THREAD}";
>
> stat = notmuch_database_open_verbose (argv[1], NOTMUCH_DATABASE_MODE_READ_WRITE, &db, &msg);
> if (stat != NOTMUCH_STATUS_SUCCESS) {
> @@ -52,10 +57,11 @@ cat c_head - c_tail <<'EOF' | test_C ${MAIL_DIR}
> printf("%d\n%s\n", thread != NULL, id2);
> }
> EOF
> +thread_num=${THREAD#thread:}
> cat <<EOF > EXPECTED
> == stdout ==
> 1
> -0000000000000009
> +${thread_num}
> == stderr ==
> EOF
> test_expect_equal_file EXPECTED OUTPUT
> --
> 2.30.0
> _______________________________________________
> notmuch mailing list -- notmuch@notmuchmail.org
> To unsubscribe send an email to notmuch-leave@notmuchmail.org
prev parent reply other threads:[~2021-02-15 20:24 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-15 0:55 [PATCH] test: Fix race condition in T568-lib-thread.sh David Bremner
2021-02-15 20:24 ` Tomi Ollila [this message]
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