MemoryLock

Lock used to synchronize the execution of a process using shared memory.

Extends: Lock

Description

The MemoryLock class is used to synchronize the execution of a process using shared memory.

Important points

This implementation is not suitable for synchronization of distributed processes.

Configuration parameters

options:

retry_timeout: timeout in milliseconds to retry lock acquisition. (Default: 100)

Instance methods

releaseLock

Releases prevously acquired lock by its key.

public void releaseLock(IContext context, String key)

context: IContext - (optional) a context to trace execution through call chain.
key: String - a unique lock key to release.

tryAcquireLock

Makes a single attempt to acquire a lock by its key. It returns immediately a positive or negative result.

public boolean tryAcquireLock(IContext context, String key, int ttl)

context: IContext - (optional) a context to trace execution through call chain.
key: String - a unique lock key to acquire.
ttl: int - a lock timeout (time to live) in milliseconds.
returns: boolean - lock result

Examples

{@code
  MemoryLock lock = new MemoryLock();
  try {
   // Processing...
  }
  finally  {
  lock.releaseLock("123", "key1");
   // Continue...
  });
  }