scron

simple cron daemon
git clone git://git.2f30.org/scron.git
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commit 4642d21ffe85cbc88b28c446084dbaeb5753cd1f
parent 08dadfafe70820ddfff4a19cca43119a51a832b8
Author: sin <sin@2f30.org>
Date:   Mon Jul  7 08:32:10 +0100

Reap children as early as possible

Don't do it on minute boundaries.

Diffstat:
crond.c | 23++++++++++++++++++-----
1 file changed, 18 insertions(+), 5 deletions(-)
diff --git a/crond.c b/crond.c @@ -40,6 +40,7 @@ struct ctabentry { char *argv0; static sig_atomic_t reload; +static sig_atomic_t chldreap; static TAILQ_HEAD(, ctabentry) ctabhead = TAILQ_HEAD_INITIALIZER(ctabhead); static char *config = "/etc/crontab"; static int nflag; @@ -352,6 +353,13 @@ reloadentries(void) } static void +sigchld(int sig) +{ + if (sig == SIGCHLD) + chldreap = 1; +} + +static void sighup(int sig) { if (sig == SIGHUP) @@ -394,6 +402,7 @@ main(int argc, char *argv[]) daemon(0, 0); } + signal(SIGCHLD, sigchld); signal(SIGHUP, sighup); loadentries(); @@ -402,9 +411,15 @@ main(int argc, char *argv[]) t = time(NULL); sleep(60 - t % 60); - if (reload == 1) { - reloadentries(); - reload = 0; + if (reload == 1 || chldreap == 1) { + if (reload == 1) { + reloadentries(); + reload = 0; + } + if (chldreap == 1) { + waitjob(); + chldreap = 0; + } continue; } @@ -414,8 +429,6 @@ main(int argc, char *argv[]) if (matchentry(cte, tm) == 1) runjob(cte->cmd); } - - waitjob(); } if (nflag == 0)