Struct PollTable

pub struct PollTable(/* private fields */);

Wraps the kernel’s struct poll_table.

Invariants

This struct contains a valid struct poll_table.

For a struct poll_table to be valid, its _qproc function must follow the safety requirements of _qproc functions:

• The _qproc function is given permission to enqueue a waiter to the provided poll_table during the call. Once the waiter is removed and an rcu grace period has passed, it must no longer access the wait_queue_head.

Implementations

impl PollTable

pub unsafe fn from_ptr<'a>(ptr: *mut poll_table) -> &'a mut PollTable

Creates a reference to a PollTable from a valid pointer.

Safety

The caller must ensure that for the duration of ’a, the pointer will point at a valid poll table (as defined in the type invariants).

The caller must also ensure that the poll_table is only accessed via the returned reference for the duration of ’a.

pub fn register_wait(&mut self, file: &File, cv: &PollCondVar)

Register this PollTable with the provided PollCondVar, so that it can be notified using the condition variable.