gitbucket.core.util.LockUtil.scala Maven / Gradle / Ivy
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package gitbucket.core.util
import java.util.concurrent.ConcurrentHashMap
import java.util.concurrent.locks.{ReentrantLock, Lock}
object LockUtil {
/**
* lock objects
*/
private val locks = new ConcurrentHashMap[String, Lock]()
/**
* Returns the lock object for the specified repository.
*/
private def getLockObject(key: String): Lock = synchronized {
if (!locks.containsKey(key)) {
locks.put(key, new ReentrantLock())
}
locks.get(key)
}
/**
* Synchronizes a given function which modifies the working copy of the wiki repository.
*/
def lock[T](key: String)(f: => T): T = {
val lock = getLockObject(key)
try {
lock.lock()
f
} finally {
lock.unlock()
}
}
}