PhantomPinned
Definition
// Copyright 2026 Google LLC
// SPDX-License-Identifier: Apache-2.0
pub struct PhantomPinned;
impl !Unpin for PhantomPinned {}Usage
// Copyright 2026 Google LLC
// SPDX-License-Identifier: Apache-2.0
pub struct DynamicBuffer {
data: Vec<u8>,
cursor: std::ptr::NonNull<u8>,
_pin: std::marker::PhantomPinned,
}
This slide should take about 5 minutes.
PhantomPinned is a marker type.
If a type contains a PhantomPinned, it will not implement Unpin by default.
This has the effect of enforcing pinning when DynamicBuffer is wrapped by
Pin.