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/**
* @file
*
* @ingroup rtems_bsd_rtems
*
* @brief TODO.
*/
/*
* Copyright (c) 2009, 2010 embedded brains GmbH. All rights reserved.
*
* embedded brains GmbH
* Obere Lagerstr. 30
* 82178 Puchheim
* Germany
* <rtems@embedded-brains.de>
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.com/license/LICENSE.
*/
#include <freebsd/machine/rtems-bsd-config.h>
#include <freebsd/sys/param.h>
#include <freebsd/sys/types.h>
#include <freebsd/sys/systm.h>
#include <freebsd/sys/proc.h>
#include <freebsd/sys/kthread.h>
#include <freebsd/sys/malloc.h>
RTEMS_CHAIN_DEFINE_EMPTY(rtems_bsd_thread_chain);
/* FIXME: What to do with the credentials? */
static struct ucred FIXME_ucred;
static int
rtems_bsd_thread_start(struct thread **td_ptr, void (*func)(void *), void *arg, int flags, int pages, const char *fmt, va_list ap)
{
struct thread *td = malloc(sizeof(struct thread), M_TEMP, M_WAITOK | M_ZERO);
if (td != NULL) {
rtems_status_code sc = RTEMS_SUCCESSFUL;
rtems_id id = RTEMS_ID_NONE;
unsigned index = 0;
char name [5] = "_???";
BSD_ASSERT(pages >= 0);
sc = rtems_task_create(
rtems_build_name('_', 'T', 'S', 'K'),
BSD_TASK_PRIORITY_NORMAL,
BSD_MINIMUM_TASK_STACK_SIZE + (size_t) pages * PAGE_SIZE,
RTEMS_DEFAULT_ATTRIBUTES,
RTEMS_DEFAULT_ATTRIBUTES,
&id
);
if (sc != RTEMS_SUCCESSFUL) {
free(td, M_TEMP);
return ENOMEM;
}
sc = rtems_task_set_note( id, RTEMS_NOTEPAD_0, ( uint32_t )td );
if (sc != RTEMS_SUCCESSFUL) {
free(td, M_TEMP);
return ENOMEM;
}
index = rtems_object_id_get_index(id);
snprintf(name + 1, sizeof(name) - 1, "%03u", index);
sc = rtems_object_set_name(id, name);
if (sc != RTEMS_SUCCESSFUL) {
rtems_task_delete(id);
free(td, M_TEMP);
return ENOMEM;
}
sc = rtems_task_start(id, (rtems_task_entry) func, (rtems_task_argument) arg);
if (sc != RTEMS_SUCCESSFUL) {
rtems_task_delete(id);
free(td, M_TEMP);
return ENOMEM;
}
td->td_id = id;
vsnprintf(td->td_name, sizeof(td->td_name), fmt, ap);
td->td_ucred = &FIXME_ucred;
rtems_chain_append(&rtems_bsd_thread_chain, &td->td_node);
if (td_ptr != NULL) {
*td_ptr = td;
}
return 0;
}
return ENOMEM;
}
static void rtems_bsd_thread_delete(void) __dead2;
static void
rtems_bsd_thread_delete(void)
{
rtems_chain_control *chain = &rtems_bsd_thread_chain;
rtems_chain_node *node = rtems_chain_first(chain);
rtems_id id = rtems_task_self();
struct thread *td = NULL;
while (!rtems_chain_is_tail(chain, node)) {
struct thread *cur = (struct thread *) node;
if (cur->td_id == id) {
td = cur;
break;
}
node = rtems_chain_next(node);
}
if (td != NULL) {
rtems_chain_extract(&td->td_node);
free(td, M_TEMP);
} else {
BSD_PANIC("cannot find task entry");
}
rtems_task_delete(RTEMS_SELF);
while (true) {
/* Do nothing */
}
}
void
kproc_start(const void *udata)
{
const struct kproc_desc *pd = udata;
int eno = kproc_create((void (*)(void *))pd->func, NULL, pd->global_procpp, 0, 0, "%s", pd->arg0);
BSD_ASSERT(eno == 0);
}
int
kproc_create(void (*func)(void *), void *arg, struct proc **newpp, int flags, int pages, const char *fmt, ...)
{
int eno = 0;
va_list ap;
va_start(ap, fmt);
eno = rtems_bsd_thread_start(newpp, func, arg, flags, pages, fmt, ap);
va_end(ap);
return eno;
}
void
kproc_exit(int ecode)
{
rtems_bsd_thread_delete();
}
void
kthread_start(const void *udata)
{
const struct kthread_desc *td = udata;
int eno = kthread_add((void (*)(void *)) td->func, NULL, NULL, td->global_threadpp, 0, 0, "%s", td->arg0);
BSD_ASSERT(eno == 0);
}
int
kthread_add(void (*func)(void *), void *arg, struct proc *p, struct thread **newtdp, int flags, int pages, const char *fmt, ...)
{
int eno = 0;
va_list ap;
va_start(ap, fmt);
eno = rtems_bsd_thread_start(newtdp, func, arg, flags, pages, fmt, ap);
va_end(ap);
return eno;
}
void
kthread_exit(void)
{
rtems_bsd_thread_delete();
}
int
kproc_kthread_add(void (*func)(void *), void *arg, struct proc **procptr, struct thread **tdptr, int flags, int pages, const char * procname, const char *fmt, ...)
{
int eno = 0;
va_list ap;
va_start(ap, fmt);
eno = rtems_bsd_thread_start(tdptr, func, arg, flags, pages, fmt, ap);
va_end(ap);
return eno;
}
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