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supervise-daemon: make respawn-max and respawn-period independent settings

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This commit is contained in:
William Hubbs 2018-11-30 17:10:47 -06:00
parent 77262c359c
commit 1b5a3b4ef4
2 changed files with 25 additions and 24 deletions
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15
man/supervise-daemon.8
View File

@ -107,16 +107,19 @@ Data can be from 0 to 7 inclusive.
.It Fl k , -umask Ar mode
Set the umask of the daemon.
.It Fl m , -respawn-max Ar count
Sets the maximum number of times a daemon will be respawned during a
respawn period. If a daemon dies more than this number of times during a
respawn period,
Sets the maximum number of times a daemon will be respawned. If a daemon
crashes more than this number of times,
.Nm
will give up trying to respawn it and exit. The default is 10, and 0
means unlimited.
will give up and exit. The default is 10 and 0 means unlimited.
.Pp
If respawn-period is also set, more than respawn-max crashes must occur
during respawn-period seconds to cause
.Nm
to give up and exit.
.It Fl N , -nicelevel Ar level
Modifies the scheduling priority of the daemon.
.It Fl P , -respawn-period Ar seconds
Sets the length of a respawn period. The default is 10 seconds. See the
Sets the length of a respawn period. See the
description of --respawn-max for more information.
.It Fl R , -retry Ar timeout | Ar signal Ns / Ns Ar timeout
The retry specification can be either a timeout in seconds or multiple

16
src/rc/supervise-daemon.c
View File

@ -143,7 +143,7 @@ static pid_t child_pid;
static int respawn_count = 0;
static int respawn_delay = 0;
static int respawn_max = 10;
static int respawn_period = 5;
static int respawn_period = 0;
static char *fifopath = NULL;
static int fifo_fd = 0;
static char *pidfile = NULL;
@ -563,23 +563,21 @@ static void supervisor(char *exec, char **argv)
do_healthcheck = 0;
healthcheck_respawn = 0;
alarm(0);
if (respawn_max > 0 && respawn_period > 0) {
respawn_now = time(NULL);
if (first_spawn == 0)
first_spawn = respawn_now;
if (respawn_now - first_spawn > respawn_period) {
if ((respawn_period > 0)
&& (respawn_now - first_spawn > respawn_period)) {
respawn_count = 0;
first_spawn = 0;
} else
respawn_count++;
if (respawn_count > respawn_max) {
syslog(LOG_WARNING,
"respawned \"%s\" too many times, exiting", exec);
if (respawn_max > 0 && respawn_count > respawn_max) {
syslog(LOG_WARNING, "respawned \"%s\" too many times, exiting",
exec);
exiting = 1;
continue;
}
}
alarm(0);
ts.tv_sec = respawn_delay;
ts.tv_nsec = 0;
nanosleep(&ts, NULL);
@ -930,7 +928,7 @@ int main(int argc, char **argv)
0, false, true) > 0)
eerrorx("%s: %s is already running", applet, exec);
if (respawn_delay * respawn_max > respawn_period)
if (respawn_period > 0 && respawn_delay * respawn_max > respawn_period)
ewarn("%s: Please increase the value of --respawn-period to more "
"than %d to avoid infinite respawning", applet,
respawn_delay * respawn_max);