int thread_run(void (*func)(void *), void *arg)
{
struct thread *current;
struct thread *t;
current = current_thread();
if (!thread_can_yield(current)) {
printk(BIOS_ERR,
"thread_run() called from non-yielding context!\n");
return -1;
}
t = get_free_thread();
if (t == NULL) {
printk(BIOS_ERR, "thread_run() No more threads!\n");
return -1;
}
prepare_thread(t, func, arg, call_wrapper_block_current, NULL);
schedule(t);
return 0;
}
int thread_run_until(void (*func)(void *), void *arg,
boot_state_t state, boot_state_sequence_t seq)
{
struct thread *current;
struct thread *t;
struct block_boot_state *bbs;
current = current_thread();
if (!thread_can_yield(current)) {
printk(BIOS_ERR,
"thread_run() called from non-yielding context!\n");
return -1;
}
t = get_free_thread();
if (t == NULL) {
printk(BIOS_ERR, "thread_run() No more threads!\n");
return -1;
}
bbs = thread_alloc_space(t, sizeof(*bbs));
bbs->state = state;
bbs->seq = seq;
prepare_thread(t, func, arg, call_wrapper_block_state, bbs);
schedule(t);
return 0;
}
static void idle_thread_init(void)
{
struct thread *t;
t = get_free_thread();
if (t == NULL)
die("No threads available for idle thread!\n");
/* Queue idle thread to run once all other threads have yielded. */
prepare_thread(t, idle_thread, NULL, call_wrapper, NULL);
push_runnable(t);
/* Mark the currently executing thread to cooperate. */
thread_cooperate();
}