stm java_轻量级的运行时软件事务内存（STM）java

Quick Stem provides a simple, fast, and lightweight Software Transactional

Memory (STM) API for Java. Programmers can wrap a value in a Stem,

and then via access to the Stem's get and set methods, ensure that all

access to the value is transactional.

Transactions can be started, and only commited transactions values will be

visible to other transactions. Commit and rollback are constant time

operations.

Quick Stem provides all four ACID transaction isolation levels,

Read-Uncommited, Read-Commited, Repeatable-Read, and Serializable. The

last of which is provided via restartable transactions.

Quick Stem's values are completely non-locking and non-blocking. Concurrent

readers and writers never block.

Finally, Quick Stem provides a set of basic Java collections which are also

transactional. Individual transactions view both different contents and

structure of the collections based on transaction visibility.