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/* SPDX-License-Identifier: copyleft-next-0.3.1 */
/* Copyright 2024, Kim Kuparinen < kimi.h.kuparinen@gmail.com > */
#include <kmi/assert.h>
#include <kmi/orphanage.h>
#include <arch/proc.h>
/**
* @file orphanage.c
*
* Stuff related to orphaned threads implementation.
*/
bool orphan(struct tcb *t)
{
return is_set(t->state, TCB_ORPHAN);
}
void orphanize(struct tcb *t)
{
set_bit(t->state, TCB_ORPHAN);
}
void unorphanize(struct tcb *t)
{
assert(!is_rpc(t));
/* attach to init process */
struct tcb *init = get_tcb(1);
reference_proc(init);
t->rid = 1;
t->pid = 1;
t->eid = 1;
free_stack(t);
reset_rpc_stack(t);
t->proc = init->proc;
use_vmem(t->proc.vmem);
alloc_stack(t);
clear_bits(t->state, TCB_ORPHAN);
assert(init->callback);
set_args3(t, 0, SYS_USER_ORPHANED, t->tid);
set_return(t, init->callback);
t->callback = init->callback;
/** @todo release irqs, here or later? */
ret_userspace_fast();
unreachable();
}
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