/* static */
int daemon::start(const char *cwd, const char *pidfile /* = NULL */, const char *logfile /* = NULL */)
{
int fdpid = -1;
if (pidfile)
{
stored_pidfile = strdup(pidfile);
if (NULL == stored_pidfile)
LOGGER_ERROR_STR_EXIT(EXIT_FAILURE, "daemon::start, strdup");
if ((fdpid = create_pidfile(pidfile)) < 0)
exit(EXIT_FAILURE);
}
pid_t pid = fork();
if (pid < 0)
{
logger::perror("daemon::start, fork");
exit(EXIT_FAILURE);
}
if (pid > 0)
{
logger::log("daemon started (pid=%d)", pid);
exit(EXIT_SUCCESS);
}
umask(0);
if (0 > setsid())
{
logger::perror("setsid");
exit(EXIT_FAILURE);
}
if (NULL != cwd && 0 > chdir("/"))
{
logger::perror("chdir");
exit(EXIT_FAILURE);
}
reset_fds();
init_logfile(logfile);
pid = getpid();
if (fdpid >= 0)
{
dprintf(fdpid, "%d", pid);
::close(fdpid);
}
logger::log("child process started (pid=%d)", pid);
return 0;
}
static void
test_gpoll (void)
{
SOCKET sockets[NUM_POLLEES];
GPollFD fds[NUM_POLLFDS];
SOCKET opp_sockets[NUM_POLLEES];
gint i;
gint activatable;
gint64 times[REPEAT][2];
#define BUCKET_COUNT 25
gint64 bucket_limits[BUCKET_COUNT] = {3, 5, 10, 15, 20, 25, 30, 35, 40, 50, 60, 70, 80, 90, 100, 120, 150, 180, 220, 280, 350, 450, 600, 800, 1000};
gint buckets[BUCKET_COUNT];
gint64 times_avg = 0, times_min = G_MAXINT64, times_max = 0;
prepare_sockets (sockets, opp_sockets, fds, NUM_POLLEES);
prepare_fds (sockets, fds, NUM_POLLEES);
times_avg = 0;
times_min = G_MAXINT64;
times_max = 0;
memset (buckets, 0, sizeof (gint) * BUCKET_COUNT);
for (i = 0; i < REPEAT; i++)
{
gint r;
gint64 diff;
reset_fds (fds, NUM_POLLEES);
reset_fds_msg (fds, NUM_POLLFDS);
times[i][0] = g_get_monotonic_time ();
r = g_poll (fds, NUM_POLLFDS, 0);
times[i][1] = g_get_monotonic_time ();
g_assert (r == 0);
diff = times[i][1] - times[i][0];
if (times_min > diff)
times_min = diff;
if (times_max < diff)
times_max = diff;
times_avg += diff;
bucketize (diff, buckets, bucket_limits, BUCKET_COUNT);
}
times_avg /= NUM_POLLEES;
g_print ("\nempty poll time:\n%4lldns - %4lldns, average %4lldns\n", times_min, times_max, times_avg);
print_buckets (buckets, bucket_limits, BUCKET_COUNT);
times_avg = 0;
times_min = G_MAXINT64;
times_max = 0;
memset (buckets, 0, sizeof (gint) * BUCKET_COUNT);
activatable = 0;
for (i = 0; i < REPEAT; i++)
{
gint r, s, v, t;
gint64 diff;
MSG msg;
gboolean found_app;
reset_fds (fds, NUM_POLLEES);
reset_fds_msg (fds, NUM_POLLFDS);
s = send (opp_sockets[activatable], (const char *) &t, 1, 0);
g_assert (PostMessage (NULL, WM_APP, 1, 2));
/* This is to ensure that all sockets catch up, otherwise some might not poll active */
g_usleep (G_USEC_PER_SEC / 1000);
times[i][0] = g_get_monotonic_time ();
r = g_poll (fds, NUM_POLLFDS, 1000);
times[i][1] = g_get_monotonic_time ();
check_fds (sockets, fds, NUM_POLLEES);
v = recv (sockets[activatable], (char *) &t, 1, 0);
found_app = FALSE;
while (!found_app && PeekMessage (&msg, NULL, 0, 0, PM_REMOVE))
if (msg.message == WM_APP && msg.wParam == 1 && msg.lParam == 2)
found_app = TRUE;
g_assert (s == 1);
g_assert (r == 2);
g_assert (v == 1);
g_assert (found_app);
reset_fds (fds, NUM_POLLEES);
reset_fds_msg (fds, NUM_POLLFDS);
r = g_poll (fds, NUM_POLLFDS, 0);
check_fds (sockets, fds, NUM_POLLEES);
g_assert (r == 0);
diff = times[i][1] - times[i][0];
if (times_min > diff)
times_min = diff;
if (times_max < diff)
times_max = diff;
times_avg += diff;
activatable = (activatable + 1) % NUM_POLLEES;
bucketize (diff, buckets, bucket_limits, BUCKET_COUNT);
}
times_avg /= NUM_POLLEES;
g_print ("1-socket + msg poll time:\n%4lldns - %4lldns, average %4lldns\n", times_min, times_max, times_avg);
print_buckets (buckets, bucket_limits, BUCKET_COUNT);
times_avg = 0;
times_min = G_MAXINT64;
times_max = 0;
memset (buckets, 0, sizeof (gint) * BUCKET_COUNT);
activatable = 0;
for (i = 0; i < REPEAT; i++)
{
gint r, s, v, t;
gint64 diff;
reset_fds (fds, NUM_POLLEES);
reset_fds_msg (fds, NUM_POLLFDS);
s = send (opp_sockets[activatable], (const char *) &t, 1, 0);
g_usleep (G_USEC_PER_SEC / 1000);
times[i][0] = g_get_monotonic_time ();
r = g_poll (fds, NUM_POLLFDS, 1000);
times[i][1] = g_get_monotonic_time ();
check_fds (sockets, fds, NUM_POLLEES);
v = recv (sockets[activatable], (char *) &t, 1, 0);
g_assert (s == 1);
g_assert (r == 1);
g_assert (v == 1);
reset_fds (fds, NUM_POLLEES);
reset_fds_msg (fds, NUM_POLLFDS);
r = g_poll (fds, NUM_POLLFDS, 0);
check_fds (sockets, fds, NUM_POLLEES);
g_assert (r == 0);
diff = times[i][1] - times[i][0];
if (times_min > diff)
times_min = diff;
if (times_max < diff)
times_max = diff;
times_avg += diff;
activatable = (activatable + 1) % NUM_POLLEES;
bucketize (diff, buckets, bucket_limits, BUCKET_COUNT);
}
times_avg /= NUM_POLLEES;
g_print ("1-socket poll time:\n%4lldns - %4lldns, average %4lldns\n", times_min, times_max, times_avg);
print_buckets (buckets, bucket_limits, BUCKET_COUNT);
times_avg = 0;
times_min = G_MAXINT64;
times_max = 0;
memset (buckets, 0, sizeof (gint) * BUCKET_COUNT);
for (i = 0; i < REPEAT; i++)
{
gint r, s, v, t;
gint64 diff;
gint j;
reset_fds (fds, NUM_POLLEES);
reset_fds_msg (fds, NUM_POLLFDS);
s = v = 0;
for (j = 0; j < NUM_POLLEES / 2; j++)
s += send (opp_sockets[j], (const char *) &t, 1, 0) == 1 ? 1 : 0;
g_usleep (G_USEC_PER_SEC / 1000);
times[i][0] = g_get_monotonic_time ();
r = g_poll (fds, NUM_POLLFDS, 1000);
times[i][1] = g_get_monotonic_time ();
check_fds (sockets, fds, NUM_POLLEES);
for (j = 0; j < NUM_POLLEES / 2; j++)
v += recv (sockets[j], (char *) &t, 1, 0) == 1 ? 1 : 0;
g_assert (s == NUM_POLLEES / 2);
g_assert (r == NUM_POLLEES / 2);
g_assert (v == NUM_POLLEES / 2);
reset_fds (fds, NUM_POLLEES);
reset_fds_msg (fds, NUM_POLLFDS);
r = g_poll (fds, NUM_POLLFDS, 0);
check_fds (sockets, fds, NUM_POLLEES);
g_assert (r == 0);
diff = times[i][1] - times[i][0];
if (times_min > diff)
times_min = diff;
if (times_max < diff)
times_max = diff;
times_avg += diff;
bucketize (diff, buckets, bucket_limits, BUCKET_COUNT);
}
times_avg /= NUM_POLLEES;
g_print ("half-socket poll time:\n%4lldns - %4lldns, average %4lldns\n", times_min, times_max, times_avg);
print_buckets (buckets, bucket_limits, BUCKET_COUNT);
times_avg = 0;
times_min = G_MAXINT64;
times_max = 0;
memset (buckets, 0, sizeof (gint) * BUCKET_COUNT);
for (i = 0; i < REPEAT; i++)
{
gint r, s, v, t;
gint64 diff;
gint j;
MSG msg;
gboolean found_app;
reset_fds (fds, NUM_POLLEES);
reset_fds_msg (fds, NUM_POLLFDS);
s = v = 0;
for (j = 0; j < NUM_POLLEES / 2; j++)
s += send (opp_sockets[j], (const char *) &t, 1, 0) == 1 ? 1 : 0;
g_assert (PostMessage (NULL, WM_APP, 1, 2));
/* This is to ensure that all sockets catch up, otherwise some might not poll active */
g_usleep (G_USEC_PER_SEC / 1000);
times[i][0] = g_get_monotonic_time ();
r = g_poll (fds, NUM_POLLFDS, 1000);
times[i][1] = g_get_monotonic_time ();
check_fds (sockets, fds, NUM_POLLEES);
for (j = 0; j < NUM_POLLEES / 2; j++)
v += recv (sockets[j], (char *) &t, 1, 0) == 1 ? 1 : 0;
found_app = FALSE;
while (!found_app && PeekMessage (&msg, NULL, 0, 0, PM_REMOVE))
if (msg.message == WM_APP && msg.wParam == 1 && msg.lParam == 2)
found_app = TRUE;
g_assert (s == NUM_POLLEES / 2);
g_assert (r == NUM_POLLEES / 2 + 1);
g_assert (v == NUM_POLLEES / 2);
g_assert (found_app);
reset_fds (fds, NUM_POLLEES);
reset_fds_msg (fds, NUM_POLLFDS);
r = g_poll (fds, NUM_POLLFDS, 0);
check_fds (sockets, fds, NUM_POLLEES);
g_assert (r == 0);
diff = times[i][1] - times[i][0];
if (times_min > diff)
times_min = diff;
if (times_max < diff)
times_max = diff;
times_avg += diff;
bucketize (diff, buckets, bucket_limits, BUCKET_COUNT);
}
times_avg /= NUM_POLLEES;
g_print ("half-socket + msg poll time:\n%4lldns - %4lldns, average %4lldns\n", times_min, times_max, times_avg);
print_buckets (buckets, bucket_limits, BUCKET_COUNT);
times_avg = 0;
times_min = G_MAXINT64;
times_max = 0;
memset (buckets, 0, sizeof (gint) * BUCKET_COUNT);
for (i = 0; i < REPEAT; i++)
{
gint r, s, v, t;
gint64 diff;
gint j;
reset_fds (fds, NUM_POLLEES);
reset_fds_msg (fds, NUM_POLLFDS);
s = v = 0;
for (j = 0; j < NUM_POLLEES; j++)
s += send (opp_sockets[j], (const char *) &t, 1, 0) == 1 ? 1 : 0;
g_usleep (G_USEC_PER_SEC / 1000);
times[i][0] = g_get_monotonic_time ();
r = g_poll (fds, NUM_POLLFDS, 1000);
times[i][1] = g_get_monotonic_time ();
check_fds (sockets, fds, NUM_POLLEES);
for (j = 0; j < NUM_POLLEES; j++)
v += recv (sockets[j], (char *) &t, 1, 0) == 1 ? 1 : 0;
g_assert (s == NUM_POLLEES);
g_assert (r == NUM_POLLEES);
g_assert (v == NUM_POLLEES);
reset_fds (fds, NUM_POLLEES);
reset_fds_msg (fds, NUM_POLLFDS);
r = g_poll (fds, NUM_POLLFDS, 0);
check_fds (sockets, fds, NUM_POLLEES);
g_assert (r == 0);
diff = times[i][1] - times[i][0];
if (times_min > diff)
times_min = diff;
if (times_max < diff)
times_max = diff;
times_avg += diff;
bucketize (diff, buckets, bucket_limits, BUCKET_COUNT);
}
times_avg /= NUM_POLLEES;
g_print ("%d-socket poll time: \n%4lldns - %4lldns, average %4lldns\n", NUM_POLLEES, times_min, times_max, times_avg);
print_buckets (buckets, bucket_limits, BUCKET_COUNT);
activatable = 0;
times_avg = 0;
times_min = G_MAXINT64;
times_max = 0;
memset (buckets, 0, sizeof (gint) * BUCKET_COUNT);
for (i = 0; i < REPEAT; i++)
{
gint r, s, v, t;
gint64 diff;
gint j;
MSG msg;
gboolean found_app;
reset_fds (fds, NUM_POLLEES);
reset_fds_msg (fds, NUM_POLLFDS);
s = v = 0;
for (j = 0; j < activatable; j++)
s += send (opp_sockets[j], (const char *) &t, 1, 0) == 1 ? 1 : 0;
g_assert (PostMessage (NULL, WM_APP, 1, 2));
g_usleep (G_USEC_PER_SEC / 1000);
times[i][0] = g_get_monotonic_time ();
r = g_poll (fds, NUM_POLLFDS, 1000);
times[i][1] = g_get_monotonic_time ();
check_fds (sockets, fds, NUM_POLLEES);
for (j = 0; j < activatable; j++)
v += recv (sockets[j], (char *) &t, 1, 0) == 1 ? 1 : 0;
found_app = FALSE;
while (!found_app && PeekMessage (&msg, NULL, 0, 0, PM_REMOVE))
if (msg.message == WM_APP && msg.wParam == 1 && msg.lParam == 2)
found_app = TRUE;
g_assert (s == activatable);
g_assert (r == activatable + 1);
g_assert (v == activatable);
g_assert (found_app);
reset_fds (fds, NUM_POLLEES);
reset_fds_msg (fds, NUM_POLLFDS);
r = g_poll (fds, NUM_POLLFDS, 0);
check_fds (sockets, fds, NUM_POLLEES);
g_assert (r == 0);
diff = times[i][1] - times[i][0];
if (times_min > diff)
times_min = diff;
if (times_max < diff)
times_max = diff;
times_avg += diff;
bucketize (diff, buckets, bucket_limits, BUCKET_COUNT);
activatable = (activatable + 1) % NUM_POLLEES;
}
times_avg /= NUM_POLLEES;
g_print ("variable socket number + msg poll time: \n%4lldns - %4lldns, average %4lldns\n", times_min, times_max, times_avg);
print_buckets (buckets, bucket_limits, BUCKET_COUNT);
cleanup_sockets (sockets, opp_sockets, NUM_POLLEES);
}
