com.facebook.presto.memory.context

Interface MemoryReservationHandler

public interface MemoryReservationHandler

Method Summary

Modifier and Type	Method and Description
com.google.common.util.concurrent.ListenableFuture<?>	reserveMemory(String allocationTag, long delta)
boolean	tryReserveMemory(String allocationTag, long delta) Try reserving the given number of bytes.

Method Detail

reserveMemory

com.google.common.util.concurrent.ListenableFuture<?> reserveMemory(String allocationTag,
                                                                    long delta)

Returns:

a future that signals the caller to block before reserving more memory.

tryReserveMemory

boolean tryReserveMemory(String allocationTag,
                         long delta)

Try reserving the given number of bytes.

Returns:

true if reservation is successful, false otherwise.