/** Our implementation of Linux' kernel_thread() function. Setup a new
* thread running our __kthread_helper() function.
*/
int kernel_thread(int (*fn)(void *), void *arg, unsigned long flags)
{
ddekit_thread_t *t;
char name[20];
struct __kthread_data *kt = vmalloc(sizeof(struct __kthread_data));
ddekit_lock_t lock;
/* Initialize (and grab) handshake lock */
ddekit_lock_init(&lock);
ddekit_lock_lock(&lock);
int threadnum = atomic_inc_return(&kthread_count);
kt->fn = fn;
kt->arg = arg;
kt->lock = lock; // Copy lock ptr, note that kt is freed by the
// new thread, so we MUST NOT use kt->lock after
// this point!
snprintf(name, 20, ".kthread%x", threadnum);
t = ddekit_thread_create(__kthread_helper,
(void *)kt, name, 0);
Assert(t);
ddekit_lock_lock(&lock);
ddekit_lock_deinit(&lock);
return pid_nr(VPID_P(kt->kthread));
}
/*****************************************************************************
* ddekit_init_timers *
****************************************************************************/
void ddekit_init_timers(void)
{
static int first_time=0;
if (!first_time)
{
ddekit_lock_init(&lock);
jiffies = get_current_clock();
HZ = sys_hz();
pending_timer_ints = ddekit_sem_init(0);
th = ddekit_thread_create(ddekit_timer_thread, 0, "timer");
first_time=1;
DDEBUG_MSG_INFO("DDEkit timer subsustem initialized");
}
}
static void initlock(void *arg) {
ddekit_lock_init(&ann_buf_lock);
}
