drivers/android/binder/node/wrapper.rs

Source file repositories/reference/linux-study-clean/drivers/android/binder/node/wrapper.rs

File Facts

System
Linux kernel
Corpus path
drivers/android/binder/node/wrapper.rs
Extension
.rs
Size
1998 bytes
Lines
79
Domain
Driver Families
Bucket
drivers/android
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

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(())
    }
}

Annotation

Implementation Notes