pub type NotThreadSafe = PhantomData<*mut ()>;Expand description
Zero-sized type to mark types not Send.
Add this type as a field to your struct if your type should not be sent to a different task.
Since Send is an auto trait, adding a single field that is !Send will ensure that the
whole type is !Send.
If a type is !Send it is impossible to give control over an instance of the type to another
task. This is useful to include in types that store or reference task-local information. A file
descriptor is an example of such task-local information.
This type also makes the type !Sync, which prevents immutable access to the value from
several threads in parallel.
Aliased Typeยง
struct NotThreadSafe;