kotlin.concurrent.java.util.concurrent.locks.ReentrantReadWriteLock

read

fun <T> ReentrantReadWriteLock.read(action: () -> T): T

Executes the given action under the read lock of this lock.

write

fun <T> ReentrantReadWriteLock.write(action: () -> T): T

Executes the given action under the write lock of this lock. The method does upgrade from read to write lock if needed. If such write has been initiated by checking some condition, the condition must be rechecked inside the action to avoid possible races.