#include "kern_constants.h"
#include "os.h"
-static void set_interval(int timer_type)
+int set_interval(int is_virtual)
{
int usec = 1000000/hz();
+ int timer_type = is_virtual ? ITIMER_VIRTUAL : ITIMER_REAL;
struct itimerval interval = ((struct itimerval) { { 0, usec },
{ 0, usec } });
if(setitimer(timer_type, &interval, NULL) == -1)
- panic("setitimer failed - errno = %d\n", errno);
+ return -errno;
+
+ return 0;
}
+#ifdef CONFIG_MODE_TT
void enable_timer(void)
{
- set_interval(ITIMER_VIRTUAL);
+ set_interval(1);
}
+#endif
void disable_timer(void)
{
printk("disnable_timer - setitimer failed, errno = %d\n",
errno);
/* If there are signals already queued, after unblocking ignore them */
- set_handler(SIGALRM, SIG_IGN, 0, -1);
- set_handler(SIGVTALRM, SIG_IGN, 0, -1);
+ signal(SIGALRM, SIG_IGN);
+ signal(SIGVTALRM, SIG_IGN);
}
void switch_timers(int to_real)
set_handler(SIGALRM, (__sighandler_t) alarm_handler,
SA_RESTART, SIGUSR1, SIGIO, SIGWINCH, SIGVTALRM, -1);
- set_interval(ITIMER_REAL);
+ set_interval(0);
}
#endif
ts.tv_nsec = 0;
nanosleep(&ts, NULL);
}
-
-void user_time_init(void)
-{
- set_interval(ITIMER_VIRTUAL);
-}