Mercurial > hg-stable
changeset 31239:68c94f286e25
chg: document why we send SIGHUP and SIGINT to process group
This makes the code more consistent - other signals are documented.
| author | Jun Wu <quark@fb.com> |
|---|---|
| date | Wed, 08 Mar 2017 13:34:25 -0800 |
| parents | 51934fc796c0 |
| children | cc37b5a06e32 |
| files | contrib/chg/procutil.c |
| diffstat | 1 files changed, 5 insertions(+), 1 deletions(-) [+] |
line wrap: on
line diff
--- a/contrib/chg/procutil.c Wed Mar 08 14:29:25 2017 -0800 +++ b/contrib/chg/procutil.c Wed Mar 08 13:34:25 2017 -0800 @@ -91,11 +91,15 @@ struct sigaction sa; memset(&sa, 0, sizeof(sa)); + + /* deadly signals meant to be sent to a process group: + * - SIGHUP: usually generated by the kernel, when termination of a + * process causes that process group to become orphaned + * - SIGINT: usually generated by the terminal */ sa.sa_handler = forwardsignaltogroup; sa.sa_flags = SA_RESTART; if (sigemptyset(&sa.sa_mask) < 0) goto error; - if (sigaction(SIGHUP, &sa, NULL) < 0) goto error; if (sigaction(SIGINT, &sa, NULL) < 0)