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When SIGTERM or SIGINT is received, terminate worker processes.

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MFC after:	2 weeks
Obtained from:	Wheel Systems Sp. z o.o. http://www.wheelsystems.com
This commit is contained in:
Pawel Jakub Dawidek 2010-08-27 21:28:02 +00:00
parent 4767ee29f1
commit 5da2320932
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=211899
1 changed files with 30 additions and 0 deletions
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30
sbin/hastd/hastd.c
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@ -82,6 +82,10 @@ sighandler(int sig)
{
switch (sig) {
case SIGINT:
case SIGTERM:
sigexit_received = true;
break;
case SIGCHLD:
sigchld_received = true;
break;
@ -373,6 +377,25 @@ failed:
pjdlog_warning("Configuration not reloaded.");
}
static void
terminate_workers(void)
{
struct hast_resource *res;
pjdlog_info("Termination signal received, exiting.");
TAILQ_FOREACH(res, &cfg->hc_resources, hr_next) {
if (res->hr_workerpid == 0)
continue;
pjdlog_info("Terminating worker process (resource=%s, role=%s, pid=%u).",
res->hr_name, role2str(res->hr_role), res->hr_workerpid);
if (kill(res->hr_workerpid, SIGTERM) == 0)
continue;
pjdlog_errno(LOG_WARNING,
"Unable to send signal to worker process (resource=%s, role=%s, pid=%u).",
res->hr_name, role2str(res->hr_role), res->hr_workerpid);
}
}
static void
listen_accept(void)
{
@ -599,6 +622,11 @@ main_loop(void)
int cfd, lfd, maxfd, ret;
for (;;) {
if (sigexit_received) {
sigexit_received = false;
terminate_workers();
exit(EX_OK);
}
if (sigchld_received) {
sigchld_received = false;
child_exit();
@ -692,6 +720,8 @@ main(int argc, char *argv[])
cfg = yy_config_parse(cfgpath, true);
assert(cfg != NULL);
signal(SIGINT, sighandler);
signal(SIGTERM, sighandler);
signal(SIGHUP, sighandler);
signal(SIGCHLD, sighandler);