Crate txn_lock

Utilities to support transactional versioning.

General-purpose locks and usage examples are provided in the map, scalar, and set modules.

More complex transaction locks (e.g. for a relational database) can be constructed using the semaphore module.

Modules

• map
  A futures-aware read-write lock on a HashMap which supports transactional versioning.
• scalar
  A transactional lock on a scalar value.
• semaphore
  A futures-aware semaphore used to maintain the ACID compliance of a mutable data store.
• set
  A futures-aware read-write lock on a HashSet which supports transactional versioning.

Enums

• Error
  An error which may occur when attempting to acquire a transactional lock