Struct reference_counted_singleton::RefCountedSingleton [−][src]
pub struct RefCountedSingleton<T>(_);
Expand description
A reference-counted singleton whose protected data can be recreated as needed.
The protected data is created when RefCountedSingleton::get_or_init
is called.
That functions returns an RCSRef
reference to the singleton.
RCSRef
instances can be cloned as needed.
The last RCSRef
reference drops the data.
Calling RefCountedSingleton::get_or_init
again recreates the data.
Implementations
Return a counted reference to the protected data if such data exists,
otherwise creates a new instance of the data by calling creator()
.
If the lock is poisoned, then this returns Err(None)
.
If creator()
returns an error err
, then this returns
Err(Some(err))
.