From: "Pranit Bauva via GitGitGadget" <gitgitgadget@gmail.com>
To: git@vger.kernel.org
Cc: Junio C Hamano <gitster@pobox.com>,
Pranit Bauva <pranit.bauva@gmail.com>
Subject: [PATCH 07/26] bisect.c: libify `check_good_are_ancestors_of_bad` and its dependents
Date: Sun, 24 Feb 2019 02:11:20 -0800 (PST) [thread overview]
Message-ID: <7b878b71d57104e4a2db78c74530e982469a9c9a.1551003074.git.gitgitgadget@gmail.com> (raw)
In-Reply-To: <pull.117.git.gitgitgadget@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 <negetive-value>`. Follow POSIX conventions to return
<negative-value> to indicate error.
Turn `exit()` to `return` calls in `check_good_are_ancestors_of_bad()`.
In `check_merge_bases()` there is an early success special case,
so we have introduced special error code `-11` which indicates early
success. This `-11` is converted back to `0` in `cmd_bisect_helper()`.
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>
---
bisect.c | 41 +++++++++++++++++++++++++---------------
builtin/bisect--helper.c | 12 ++++++++++--
2 files changed, 36 insertions(+), 17 deletions(-)
diff --git a/bisect.c b/bisect.c
index 1134854fe2..87db1cc4be 100644
--- a/bisect.c
+++ b/bisect.c
@@ -859,17 +859,24 @@ static int check_ancestors(int rev_nr, struct commit **rev, const char *prefix)
*
* 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(const char *prefix, int no_checkout)
+static int check_good_are_ancestors_of_bad(const char *prefix, int no_checkout)
{
char *filename = git_pathdup("BISECT_ANCESTORS_OK");
struct stat st;
int fd, rev_nr, res = 0;
struct commit **rev;
- if (!current_bad_oid)
- die(_("a %s revision is needed"), term_bad);
+ /*
+ * 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) {
+ res = error(_("a %s revision is needed"), term_bad);
+ goto done;
+ }
/* Check if file BISECT_ANCESTORS_OK exists. */
if (!stat(filename, &st) && S_ISREG(st.st_mode))
@@ -884,18 +891,20 @@ static void check_good_are_ancestors_of_bad(const char *prefix, int no_checkout)
if (check_ancestors(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;
}
/*
@@ -973,7 +982,9 @@ int bisect_next_all(const char *prefix, int no_checkout)
if (read_bisect_refs())
die(_("reading bisect refs failed"));
- check_good_are_ancestors_of_bad(prefix, no_checkout);
+ res = check_good_are_ancestors_of_bad(prefix, no_checkout);
+ if (res)
+ return res;
bisect_rev_setup(&revs, prefix, "%s", "^%s", 1);
revs.limited = 1;
diff --git a/builtin/bisect--helper.c b/builtin/bisect--helper.c
index f441ea85ff..ffb5dbe4b3 100644
--- a/builtin/bisect--helper.c
+++ b/builtin/bisect--helper.c
@@ -663,7 +663,8 @@ int cmd_bisect__helper(int argc, const char **argv, const char *prefix)
switch (cmdmode) {
case NEXT_ALL:
- return bisect_next_all(prefix, no_checkout);
+ res = bisect_next_all(prefix, no_checkout);
+ break;
case WRITE_TERMS:
if (argc != 2)
return error(_("--write-terms requires two arguments"));
@@ -710,5 +711,12 @@ 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;
}
--
gitgitgadget
next prev parent reply other threads:[~2019-02-24 10:11 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-24 10:11 [PATCH 00/26] Git bisect part3 Tanushree Tumane via GitGitGadget
2019-02-24 10:11 ` [PATCH 01/26] bisect--helper: refer branch.buf before strbuf_release(...) Tanushree Tumane via GitGitGadget
2019-02-24 10:11 ` [PATCH 02/26] bisect--helper: change `retval` to `res` Tanushree Tumane via GitGitGadget
2019-02-24 10:11 ` [PATCH 03/26] bisect--helper: `decide_next()` helper function Tanushree Tumane via GitGitGadget
2019-02-24 10:11 ` [PATCH 04/26] bisect.c: libify `exit_if_skipped_commits` to `error_if_skipped...` Pranit Bauva via GitGitGadget
2019-02-24 10:11 ` [PATCH 05/26] bisect.c: libify `bisect_checkout` and its dependants Pranit Bauva via GitGitGadget
2019-02-24 10:11 ` Pranit Bauva via GitGitGadget [this message]
2019-02-24 10:11 ` [PATCH 06/26] bisect.c: libify `check_merge_bases` and its dependents Pranit Bauva via GitGitGadget
2019-02-24 10:11 ` [PATCH 08/26] bisect.c: libify `handle_bad_merge_base` and its dependants Pranit Bauva via GitGitGadget
2019-02-24 10:11 ` [PATCH 09/26] bisect.c: libify `bisect_next_all` " Pranit Bauva via GitGitGadget
2019-02-24 10:11 ` [PATCH 10/26] bisect--helper: `bisect_next` and `bisect_auto_next` shell function in C Pranit Bauva via GitGitGadget
2019-02-24 10:11 ` [PATCH 11/26] bisect--helper: Finish `bisect_start()` conversion Pranit Bauva via GitGitGadget
2019-02-24 10:11 ` [PATCH 12/26] bisect--helper: dequote arguments in `bisect-start` Pranit Bauva via GitGitGadget
2019-02-24 10:11 ` [PATCH 13/26] bisect--helper: retire `--bisect-clean-state` subcommand Pranit Bauva via GitGitGadget
2019-02-24 10:11 ` [PATCH 15/26] bisect--helper: `bisect_autostart` shell function in C Pranit Bauva via GitGitGadget
2019-02-24 10:11 ` [PATCH 14/26] bisect--helper: retire `--next-all` subcommand Pranit Bauva via GitGitGadget
2019-02-24 10:11 ` [PATCH 16/26] bisect--helper: `bisect_state` & `bisect_head` shell function in C Pranit Bauva via GitGitGadget
2019-02-24 10:11 ` [PATCH 17/26] bisect--helper: retire `--check-expected-revs` subcommand Pranit Bauva via GitGitGadget
2019-02-24 10:11 ` [PATCH 18/26] bisect--helper: retire `--write-terms` subcommand Pranit Bauva via GitGitGadget
2019-02-24 10:11 ` [PATCH 19/26] bisect--helper: `bisect_log` shell function in C Pranit Bauva via GitGitGadget
2019-02-24 10:11 ` [PATCH 20/26] bisect--helper: `bisect_replay` " Pranit Bauva via GitGitGadget
2019-02-24 10:11 ` [PATCH 21/26] bisect--helper: retire `--bisect-write` subcommand Pranit Bauva via GitGitGadget
2019-02-24 10:11 ` [PATCH 22/26] bisect--helper: retire `--bisect-autostart` subcommand Pranit Bauva via GitGitGadget
2019-02-24 10:11 ` [PATCH 24/26] bisect--helper: remove the dequote in bisect_start() Pranit Bauva via GitGitGadget
2019-02-24 10:11 ` [PATCH 23/26] bisect--helper: retire `--bisect-auto-next` subcommand Pranit Bauva via GitGitGadget
2019-02-24 10:11 ` [PATCH 25/26] bisect--helper: `bisect_skip` shell function in C Pranit Bauva via GitGitGadget
2019-02-24 10:11 ` [PATCH 26/26] bisect--helper: retire `--check-and-set-terms` subcommand Pranit Bauva via GitGitGadget
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
List information: http://vger.kernel.org/majordomo-info.html
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=7b878b71d57104e4a2db78c74530e982469a9c9a.1551003074.git.gitgitgadget@gmail.com \
--to=gitgitgadget@gmail.com \
--cc=git@vger.kernel.org \
--cc=gitster@pobox.com \
--cc=pranit.bauva@gmail.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
Code repositories for project(s) associated with this public inbox
https://80x24.org/mirrors/git.git
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).