int __rtai_syscall_init(void)
{
__rtai_muxid = xnshadow_register_interface(&__props);
if (__rtai_muxid < 0)
return -ENOSYS;
xnpod_add_hook(XNHOOK_THREAD_DELETE, &__shadow_delete_hook);
return 0;
}
int __rtai_task_pkg_init(void)
{
xnpod_add_hook(XNHOOK_THREAD_DELETE, &__task_delete_hook);
return 0;
}
void psostask_init(u_long rrperiod)
{
initq(&psostaskq);
psos_time_slice = rrperiod;
xnpod_add_hook(XNHOOK_THREAD_DELETE, psostask_delete_hook);
}
int rt_task_init(RT_TASK *task,
void (*body) (int),
int cookie,
int stack_size,
int priority, int uses_fpu, void (*sigfn) (void))
{
union xnsched_policy_param param;
struct xnthread_start_attr sattr;
struct xnthread_init_attr iattr;
xnflags_t bflags = 0;
int ret;
spl_t s;
if (priority < XNSCHED_LOW_PRIO ||
priority > XNSCHED_HIGH_PRIO || task->magic == RTAI_TASK_MAGIC)
return -EINVAL;
priority = XNSCHED_HIGH_PRIO - priority + 1; /* Normalize. */
if (uses_fpu)
#ifdef CONFIG_XENO_HW_FPU
bflags |= XNFPU;
#else /* !CONFIG_XENO_HW_FPU */
return -EINVAL;
#endif /* CONFIG_XENO_HW_FPU */
iattr.tbase = rtai_tbase;
iattr.name = NULL;
iattr.flags = bflags;
iattr.ops = &__rtai_task_ops;
iattr.stacksize = stack_size;
param.rt.prio = priority;
if (xnpod_init_thread(&task->thread_base,
&iattr, &xnsched_class_rt, ¶m) != 0)
/* Assume this is the only possible failure. */
return -ENOMEM;
xnarch_cpus_clear(task->affinity);
inith(&task->link);
task->suspend_depth = 1;
task->cookie = cookie;
task->body = body;
task->sigfn = sigfn;
if (xnarch_cpus_empty(task->affinity))
task->affinity = XNPOD_ALL_CPUS;
xnlock_get_irqsave(&nklock, s);
sattr.mode = XNSUSP; /* Suspend on startup. */
sattr.imask = 0;
sattr.affinity = task->affinity;
sattr.entry = rt_task_trampoline;
sattr.cookie = task;
ret = xnpod_start_thread(&task->thread_base, &sattr);
if (ret)
goto unlock_and_exit;
task->magic = RTAI_TASK_MAGIC;
appendq(&__rtai_task_q, &task->link);
#ifdef CONFIG_XENO_FASTSYNCH
/* We need an anonymous registry entry to obtain a handle for fast
mutex locking. */
ret = xnthread_register(&task->thread_base, "");
if (ret) {
xnpod_abort_thread(&task->thread_base);
goto unlock_and_exit;
}
#endif /* CONFIG_XENO_FASTSYNCH */
/* Add a switch hook only if a signal function has been declared
at least once for some created task. */
if (sigfn != NULL && __rtai_task_sig++ == 0)
xnpod_add_hook(XNHOOK_THREAD_SWITCH, &__task_switch_hook);
unlock_and_exit:
xnlock_put_irqrestore(&nklock, s);
return ret ? -EINVAL : 0;
}
void wind_task_init(void)
{
initq(&wind_tasks_q);
xnpod_add_hook(XNHOOK_THREAD_DELETE, wind_task_delete_hook);
}