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// SPDX-License-Identifier: GPL-2.0
// Copyright (C) 2025 Google LLC.
use kernel::{list::ListArc, prelude::*, seq_file::SeqFile, seq_print, sync::UniqueArc};
use crate::{node::Node, thread::Thread, BinderReturnWriter, DArc, DLArc, DTRWrap, DeliverToRead};
use core::mem::MaybeUninit;
pub(crate) struct CritIncrWrapper {
inner: UniqueArc<MaybeUninit<DTRWrap<NodeWrapper>>>,
}
impl CritIncrWrapper {
pub(crate) fn new() -> Result<Self> {
Ok(CritIncrWrapper {
inner: UniqueArc::new_uninit(GFP_KERNEL)?,
})
}
pub(super) fn init(self, node: DArc<Node>) -> DLArc<dyn DeliverToRead> {
match self.inner.pin_init_with(DTRWrap::new(NodeWrapper { node })) {
Ok(initialized) => ListArc::from(initialized) as _,
Err(err) => match err {},
}
}
}
struct NodeWrapper {
node: DArc<Node>,
}
kernel::list::impl_list_arc_safe! {
impl ListArcSafe<0> for NodeWrapper {
untracked;
}
}
impl DeliverToRead for NodeWrapper {
fn do_work(
self: DArc<Self>,
_thread: &Thread,
writer: &mut BinderReturnWriter<'_>,
) -> Result<bool> {
let node = &self.node;
let mut owner_inner = node.owner.inner.lock();
let inner = node.inner.access_mut(&mut owner_inner);
let ds = &mut inner.delivery_state;
assert!(ds.has_pushed_wrapper);
assert!(ds.has_strong_zero2one);
ds.has_pushed_wrapper = false;
ds.has_strong_zero2one = false;
node.do_work_locked(writer, owner_inner)
}
fn cancel(self: DArc<Self>) {}
fn should_sync_wakeup(&self) -> bool {
false
}
#[inline(never)]
fn debug_print(&self, m: &SeqFile, prefix: &str, _tprefix: &str) -> Result<()> {
seq_print!(
m,
"{}node work {}: u{:016x} c{:016x}\n",
prefix,
self.node.debug_id,
self.node.ptr,
self.node.cookie,
);
Ok(())
}
}
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