io.netty.channel

接口 SelectStrategy

public interface SelectStrategy

Select strategy interface. Provides the ability to control the behavior of the select loop. For example a blocking select operation can be delayed or skipped entirely if there are events to process immediately.

字段概要

字段

限定符和类型	字段和说明
static int	BUSY_WAIT Indicates the IO loop to poll for new events without blocking.
static int	CONTINUE Indicates the IO loop should be retried, no blocking select to follow directly.
static int	SELECT Indicates a blocking select should follow.

方法概要

限定符和类型	方法和说明
int	calculateStrategy(IntSupplier selectSupplier, boolean hasTasks) The SelectStrategy can be used to steer the outcome of a potential select call.

字段详细资料

SELECT

static final int SELECT

Indicates a blocking select should follow.

另请参阅:

常量字段值

CONTINUE

static final int CONTINUE

Indicates the IO loop should be retried, no blocking select to follow directly.

另请参阅:

常量字段值

BUSY_WAIT

static final int BUSY_WAIT

Indicates the IO loop to poll for new events without blocking.

另请参阅:

常量字段值

方法详细资料

calculateStrategy

int calculateStrategy(IntSupplier selectSupplier,
                      boolean hasTasks)
               throws java.lang.Exception

The SelectStrategy can be used to steer the outcome of a potential select call.

参数:

selectSupplier - The supplier with the result of a select result.

hasTasks - true if tasks are waiting to be processed.

返回:

SELECT if the next step should be blocking select CONTINUE if the next step should be to not select but rather jump back to the IO loop and try again. Any value >= 0 is treated as an indicator that work needs to be done.

抛出:

java.lang.Exception