| Publisher | Springer Science+Business Media | ||
|---|---|---|---|
| Format | 614.1KB PDF | Date added | 13 May 2006 |
| Topics | Programming Languages, Java | ||
| Downloads | 5 | ||
Concurrent data accesses in high-level languages like Java and C# are typically mediated using mutual-exclusion locks. Threads use locks to guard the operations performed while the lock is held, so that the lock's guarded operations can never be interleaved with operations of other threads that are guarded by the same lock. This way both atomicity and isolation properties of a thread's guarded operations are enforced. Recent proposals recognize that these properties can also be enforced by concurrency control protocols that avoid well-known problems associated with locking, by transplanting notions of transactions found in database systems to a programming language context. While higher-level than locks, software transactions incur significant implementation overhead. This overhead cannot be easily masked when there is little contention on the operations being guarded.
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