static void jz_set_mode(enum clock_event_mode mode,
struct clock_event_device *clkevt)
{
struct jz_timerevent *evt_dev = container_of(clkevt,struct jz_timerevent,clkevt);
unsigned long flags;
unsigned int latch = (evt_dev->rate + (HZ >> 1)) / HZ;
spin_lock_irqsave(&evt_dev->lock,flags);
switch (mode) {
case CLOCK_EVT_MODE_PERIODIC:
evt_dev->curmode = mode;
resettimer(latch - 1);
break;
case CLOCK_EVT_MODE_ONESHOT:
evt_dev->curmode = mode;
break;
case CLOCK_EVT_MODE_UNUSED:
case CLOCK_EVT_MODE_SHUTDOWN:
stoptimer();
break;
case CLOCK_EVT_MODE_RESUME:
restarttimer();
break;
}
spin_unlock_irqrestore(&evt_dev->lock,flags);
}
int
main(int argc, char *argv[])
{
char *home;
int err;
enum mode m;
pid_t timerpid;
struct stat st;
if (argc == 2)
switch (argv[1][0]) {
case 'p':
m = PAUSE;
break;
case 'r':
m = RESTART;
break;
case 's':
m = STOP;
break;
default:
usage(argv[0]);
break;
}
else if (argc == 1)
m = BEGIN;
else
usage(argv[0]);
//Check if we're starting the timer
//and the file exists.
err = access(PIDFILE, F_OK);
if (m != BEGIN && err != 0) {
printf("Timer is not running, please start it first.\n");
exit(1);
} else if (m == BEGIN && err == 0) {
printf("Timer is already running, please stop it first.\n");
exit(1);
}
//Create or read the file used to store the PID of the timer.
if (m != BEGIN)
pidfile = fopen(PIDFILE, "r+");
else if (m == BEGIN)
pidfile = fopen(PIDFILE, "w+");
if (pidfile == NULL && m != BEGIN) {
printf("Couldn't open %s for read it\n", PIDFILE);
exit(1);
} else if (pidfile == NULL && m == BEGIN) {
printf("Couldn't create %s.\n", PIDFILE);
exit(1);
}
if (m != BEGIN)
timerpid = (pid_t)getw(pidfile);
if ((home = getenv("HOME")) == NULL) {
printf("Error: No $HOME, you hobbo!.\n");
printf("Continuing anyways.\n");
} else
timerfilename = strncat(home, "/.timer", sizeof(timerfilename));
switch (m) {
case BEGIN:
begin();
break;
case PAUSE:
pausetimer(timerpid);
break;
case RESTART:
restarttimer(timerpid);
break;
case STOP:
stoptimer(timerpid);
break;
}
exit (0);
}
