From: Miriam Rubio <mirucam@gmail.com>
To: git@vger.kernel.org
Cc: Pranit Bauva <pranit.bauva@gmail.com>,
Christian Couder <chriscool@tuxfamily.org>,
Tanushree Tumane <tanushreetumane@gmail.com>,
Miriam Rubio <mirucam@gmail.com>
Subject: [PATCH v2 09/11] bisect: libify `check_good_are_ancestors_of_bad` and its dependents
Date: Tue, 28 Jan 2020 15:40:24 +0100 [thread overview]
Message-ID: <20200128144026.53128-10-mirucam@gmail.com> (raw)
In-Reply-To: <20200128144026.53128-1-mirucam@gmail.com>
From: Pranit Bauva <pranit.bauva@gmail.com>
Since we want to get rid of git-bisect.sh it would be necessary to
convert those exit() calls to return statements so that errors can be
reported.
Emulate try catch in C by converting `exit(<positive-value>)` to
`return <negative-value>`. Follow POSIX conventions to return
<negative-value> to indicate error.
Code that turns -11(early success code) to 0 from
`check_good_are_ancestors_of_bad()` has been moved to
`cmd_bisect__helper()`.
Handle the return value in dependent function `bisect_next_all()`.
Mentored-by: Christian Couder <chriscool@tuxfamily.org>
Mentored by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Pranit Bauva <pranit.bauva@gmail.com>
Signed-off-by: Tanushree Tumane <tanushreetumane@gmail.com>
Signed-off-by: Miriam Rubio <mirucam@gmail.com>
---
bisect.c | 40 ++++++++++++++++++++++++++--------------
builtin/bisect--helper.c | 12 ++++++++++--
2 files changed, 36 insertions(+), 16 deletions(-)
diff --git a/bisect.c b/bisect.c
index 2a6566d066..d519e10827 100644
--- a/bisect.c
+++ b/bisect.c
@@ -865,19 +865,27 @@ static int check_ancestors(struct repository *r, int rev_nr,
*
* If that's not the case, we need to check the merge bases.
* If a merge base must be tested by the user, its source code will be
- * checked out to be tested by the user and we will exit.
+ * checked out to be tested by the user and we will return.
*/
-static void check_good_are_ancestors_of_bad(struct repository *r,
+
+static int check_good_are_ancestors_of_bad(struct repository *r,
const char *prefix,
int no_checkout)
{
- char *filename = git_pathdup("BISECT_ANCESTORS_OK");
+ char *filename;
struct stat st;
int fd, rev_nr, res = 0;
struct commit **rev;
+ /*
+ * We don't want to clean the bisection state
+ * as we need to get back to where we started
+ * by using `git bisect reset`.
+ */
if (!current_bad_oid)
- die(_("a %s revision is needed"), term_bad);
+ return error(_("a %s revision is needed"), term_bad);
+
+ filename = git_pathdup("BISECT_ANCESTORS_OK");
/* Check if file BISECT_ANCESTORS_OK exists. */
if (!stat(filename, &st) && S_ISREG(st.st_mode))
@@ -893,18 +901,20 @@ static void check_good_are_ancestors_of_bad(struct repository *r,
if (check_ancestors(r, rev_nr, rev, prefix))
res = check_merge_bases(rev_nr, rev, no_checkout);
free(rev);
- if (res)
- exit(res == -11 ? 0 : -res);
- /* Create file BISECT_ANCESTORS_OK. */
- fd = open(filename, O_CREAT | O_TRUNC | O_WRONLY, 0600);
- if (fd < 0)
- warning_errno(_("could not create file '%s'"),
- filename);
- else
- close(fd);
+ if (!res)
+ {
+ /* Create file BISECT_ANCESTORS_OK. */
+ fd = open(filename, O_CREAT | O_TRUNC | O_WRONLY, 0600);
+ if (fd < 0)
+ warning_errno(_("could not create file '%s'"),
+ filename);
+ else
+ close(fd);
+ }
done:
free(filename);
+ return res;
}
/*
@@ -975,7 +985,9 @@ int bisect_next_all(struct repository *r, const char *prefix, int no_checkout)
if (read_bisect_refs())
die(_("reading bisect refs failed"));
- check_good_are_ancestors_of_bad(r, prefix, no_checkout);
+ res = check_good_are_ancestors_of_bad(r, prefix, no_checkout);
+ if (res)
+ return res;
bisect_rev_setup(r, &revs, prefix, "%s", "^%s", 1);
revs.limited = 1;
diff --git a/builtin/bisect--helper.c b/builtin/bisect--helper.c
index 826fcba2ed..3442bfe2cb 100644
--- a/builtin/bisect--helper.c
+++ b/builtin/bisect--helper.c
@@ -666,7 +666,8 @@ int cmd_bisect__helper(int argc, const char **argv, const char *prefix)
switch (cmdmode) {
case NEXT_ALL:
- return bisect_next_all(the_repository, prefix, no_checkout);
+ res = bisect_next_all(the_repository, prefix, no_checkout);
+ break;
case WRITE_TERMS:
if (argc != 2)
return error(_("--write-terms requires two arguments"));
@@ -713,5 +714,12 @@ int cmd_bisect__helper(int argc, const char **argv, const char *prefix)
return error("BUG: unknown subcommand '%d'", cmdmode);
}
free_terms(&terms);
- return !!res;
+ /*
+ * Handle early success
+ * From check_merge_bases > check_good_are_ancestors_of_bad > bisect_next_all
+ */
+ if (res == -11)
+ res = 0;
+
+ return res < 0 ? -res : res;
}
--
2.21.1 (Apple Git-122.3)
next prev parent reply other threads:[~2020-01-28 14:41 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-28 14:40 [Outreachy][PATCH v2 00/11] Finish converting git bisect to C part 1 Miriam Rubio
2020-01-28 14:40 ` [PATCH v2 01/11] bisect--helper: convert `vocab_*` char pointers to char arrays Miriam Rubio
2020-01-28 14:40 ` [PATCH v2 02/11] bisect--helper: change `retval` to `res` Miriam Rubio
2020-01-28 14:40 ` [PATCH v2 03/11] bisect: use the standard 'if (!var)' way to check for 0 Miriam Rubio
2020-01-28 14:40 ` [PATCH v2 04/11] run-command: make `exists_in_PATH()` non-static Miriam Rubio
2020-01-30 12:36 ` Johannes Schindelin
[not found] ` <CAN7CjDCiG6KZU+yHGxQ26TESb1yfvc7aWh0EKhE=owSV7D-C0Q@mail.gmail.com>
2020-01-30 14:41 ` Fwd: " Miriam R.
2020-01-28 14:40 ` [PATCH v2 05/11] bisect--helper: introduce new `decide_next()` function Miriam Rubio
2020-01-30 12:31 ` Johannes Schindelin
2020-01-30 14:05 ` Miriam R.
2020-01-28 14:40 ` [PATCH v2 06/11] bisect: libify `exit_if_skipped_commits` to `error_if_skipped*` and its dependents Miriam Rubio
2020-01-31 18:22 ` Junio C Hamano
2020-01-28 14:40 ` [PATCH v2 07/11] bisect: libify `bisect_checkout` Miriam Rubio
2020-01-31 18:31 ` Junio C Hamano
2020-01-28 14:40 ` [PATCH v2 08/11] bisect: libify `check_merge_bases` and its dependents Miriam Rubio
2020-01-31 18:40 ` Junio C Hamano
2020-01-28 14:40 ` Miriam Rubio [this message]
2020-01-30 13:46 ` [PATCH v2 09/11] bisect: libify `check_good_are_ancestors_of_bad` " Johannes Schindelin
2020-01-30 14:40 ` Miriam R.
2020-01-30 15:01 ` Johannes Schindelin
2020-01-30 15:26 ` Miriam R.
2020-01-30 21:59 ` Christian Couder
2020-01-31 9:07 ` Johannes Schindelin
2020-01-31 9:15 ` Christian Couder
[not found] ` <CAN7CjDC7ijMDtJdShRB+P0d0GRYYrQXktdH2Og9XGDqJ-OZxzw@mail.gmail.com>
2020-01-31 10:21 ` Fwd: " Miriam R.
2020-01-28 14:40 ` [PATCH v2 10/11] bisect: libify `handle_bad_merge_base` " Miriam Rubio
2020-01-28 14:40 ` [PATCH v2 11/11] bisect: libify `bisect_next_all` Miriam Rubio
2020-01-30 15:04 ` [Outreachy][PATCH v2 00/11] Finish converting git bisect to C part 1 Johannes Schindelin
2020-01-30 15:18 ` Miriam R.
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