| commit | 7b91929ba0422435c193c506dbaa593964be6e84 | [log] [tgz] |
|---|---|---|
| author | Jeff King <peff@peff.net> | Fri Mar 17 19:20:04 2017 -0400 |
| committer | Junio C Hamano <gitster@pobox.com> | Sat Mar 18 10:29:15 2017 -0700 |
| tree | 33eca4e54f034cf2d6a96067950f02b5787a8244 | |
| parent | 46df6906f3aaf74dafe2026b028c8c5c1a0d5f58 [diff] |
run-command: fix segfault when cleaning forked async process Callers of the run-command API may mark a child as "clean_on_exit"; it gets added to a list and killed when the main process dies. Since commit 46df6906f (execv_dashed_external: wait for child on signal death, 2017-01-06), we respect an extra "wait_after_clean" flag, which we expect to find in the child_process struct. When Git is built with NO_PTHREADS, we start "struct async" processes by forking rather than spawning a thread. The resulting processes get added to the cleanup list but they don't have a child_process struct, and the cleanup function ends up dereferencing NULL. We should notice this case and assume that the processes do not need to be waited for (i.e., the same behavior they had before 46df6906f). Reported-by: Brandon Williams <bmwill@google.com> Signed-off-by: Jeff King <peff@peff.net> Reviewed-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Git is a fast, scalable, distributed revision control system with an unusually rich command set that provides both high-level operations and full access to internals.
Git is an Open Source project covered by the GNU General Public License version 2 (some parts of it are under different licenses, compatible with the GPLv2). It was originally written by Linus Torvalds with help of a group of hackers around the net.
Please read the file INSTALL for installation instructions.
Many Git online resources are accessible from http://git-scm.com/ including full documentation and Git related tools.
See Documentation/gittutorial.txt to get started, then see Documentation/giteveryday.txt for a useful minimum set of commands, and Documentation/git-.txt for documentation of each command. If git has been correctly installed, then the tutorial can also be read with man gittutorial or git help tutorial, and the documentation of each command with man git-<commandname> or git help <commandname>.
CVS users may also want to read Documentation/gitcvs-migration.txt (man gitcvs-migration or git help cvs-migration if git is installed).
The user discussion and development of Git take place on the Git mailing list -- everyone is welcome to post bug reports, feature requests, comments and patches to git@vger.kernel.org (read Documentation/SubmittingPatches for instructions on patch submission). To subscribe to the list, send an email with just “subscribe git” in the body to majordomo@vger.kernel.org. The mailing list archives are available at http://news.gmane.org/gmane.comp.version-control.git/, http://marc.info/?l=git and other archival sites.
The maintainer frequently sends the “What's cooking” reports that list the current status of various development topics to the mailing list. The discussion following them give a good reference for project status, development direction and remaining tasks.
The name “git” was given by Linus Torvalds when he wrote the very first version. He described the tool as “the stupid content tracker” and the name as (depending on your mood):