int task_create(task_t* tasks, size_t num_tasks)
{
size_t i;
if (num_tasks > OS_MAX_TASKS - 2)
return -EINVAL;
if (!valid_addr(tasks, sizeof(task_t) * num_tasks, USR_START_ADDR, USR_END_ADDR))
return -EFAULT;
task_t *(task_array[OS_MAX_TASKS]);
for (i = 0; i < num_tasks; i++)
{
task_array[i] = &(tasks[i]);
}
if (!assign_schedule(task_array, num_tasks))
{
return -ESCHED;
}
disable_interrupts();
tasks_created = 1;
allocate_tasks(task_array, num_tasks);
dispatch_nosave();
// This should never return
return -1;
}
int task_create(task_t* tasks, size_t num_tasks) {
// Sanity checks.
if (num_tasks > OS_AVAIL_TASKS) return -EINVAL;
/*
* Assign schedule via RMA scheduling.
*/
task_t* sorted_tasks[num_tasks];
size_t i;
// Prep
for (i = 0; i < num_tasks; i++) {
sorted_tasks[i] = tasks + i;
}
INT_ATOMIC_START;
// Perform UB test.
if (!assign_schedule(sorted_tasks, num_tasks)) return -EFAULT;
// Init TCBs
if (!allocate_tasks(sorted_tasks, num_tasks)) return -EFAULT;
// Start device interrupt timer.
reg_write(OSTMR_OSMR_ADDR(2),
reg_read(OSTMR_OSCR_ADDR) + get_ticks(DEV_INT_PERIOD));
// Start tasks
dispatch_nosave();
INT_ATOMIC_END;
return 0;
}
