Crate token_cell[−][src]
Expand description
This library provides an alternative to ghost-cell
which uses concrete types instead of lifetimes for branding.
This allows a more convenient usage, where cells and tokens can be constructed independently, with the same compile-time guarantees as ghost-cell
. The trade-off for this arguably more convenient usage and arguably easier to understand branding method is that tokens, while zero-sized if made correctly, must be guaranteed to be constructable only if no other instance exists.
To this end, this crate provides the [generate_token
] macro, which will create a ZST which can only be constructed using [TokenTrait::aquire
], which is generated to guarantee no other token exists before returning the token. This is done by checking a static AtomicBool
flag, which is the only runtime cost of these tokens.
Re-exports
pub use support::IdMismatch;
pub use support::RuntimeToken;
pub use support::TokenChecker;
pub use support::TokenTrait;
Modules
Macros
Generates any number of token types for use with token cells.
Structs
A cell which requires a token for interior read/write access.