org.apache.shenyu.common.concurrent

Class MemoryLimiter

java.lang.Object

org.apache.shenyu.common.concurrent.MemoryLimiter

public class MemoryLimiter
extends java.lang.Object

memory limiter.

See Also:

MemoryLimitCalculator

Constructor Summary

Constructors

Constructor and Description
MemoryLimiter(java.lang.instrument.Instrumentation inst)
MemoryLimiter(long memoryLimit, java.lang.instrument.Instrumentation inst)

Method Summary

Modifier and Type	Method and Description
boolean	acquire(java.lang.Object o) acquire memory by Object.
boolean	acquire(java.lang.Object o, long timeout, java.util.concurrent.TimeUnit unit) acquire memory by Object.
void	acquireInterruptibly(java.lang.Object o) acquire memory by Object.
long	getCurrentMemory() get the current memory.
long	getCurrentRemainMemory() get the current remain memory.
long	getMemoryLimit() get the memory limit.
void	release(java.lang.Object o) release memory by Object.
void	releaseInterruptibly(java.lang.Object o) release memory by Object.
void	releaseInterruptibly(java.lang.Object o, long timeout, java.util.concurrent.TimeUnit unit) release memory by Object.
void	reset() reset this MemoryLimiter.
void	setMemoryLimit(long memoryLimit) set the memory limit.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

MemoryLimiter

public MemoryLimiter(java.lang.instrument.Instrumentation inst)

MemoryLimiter

public MemoryLimiter(long memoryLimit,
                     java.lang.instrument.Instrumentation inst)

Method Detail

setMemoryLimit

public void setMemoryLimit(long memoryLimit)

set the memory limit.

Parameters:

memoryLimit - the memory limit

getMemoryLimit

public long getMemoryLimit()

get the memory limit.

Returns:

the memory limit

getCurrentMemory

public long getCurrentMemory()

get the current memory.

Returns:

the current memory

getCurrentRemainMemory

public long getCurrentRemainMemory()

get the current remain memory.

Returns:

the current remain memory

acquire

public boolean acquire(java.lang.Object o)

acquire memory by Object. this method does not respond to interrupts.

Parameters:

o - memory size to be applied by calculating

Returns:

true if acquire success

acquire

public boolean acquire(java.lang.Object o,
                       long timeout,
                       java.util.concurrent.TimeUnit unit)
                throws java.lang.InterruptedException

acquire memory by Object. this method response to interrupts.

Parameters:

o - memory size to be applied by calculating

timeout - max time to wait

unit - time unit

Returns:

true if acquire success

Throws:

java.lang.InterruptedException - the InterruptedException

acquireInterruptibly

public void acquireInterruptibly(java.lang.Object o)
                          throws java.lang.InterruptedException

acquire memory by Object. this method response to interrupts.

Parameters:

o - memory size to be applied by calculating

Throws:

java.lang.InterruptedException - the InterruptedException

release

public void release(java.lang.Object o)

release memory by Object. this method does not respond to interrupts.

Parameters:

o - memory size to be applied by calculating

releaseInterruptibly

public void releaseInterruptibly(java.lang.Object o)
                          throws java.lang.InterruptedException

release memory by Object. this method response to interrupts.

Parameters:

o - memory size to be applied by calculating

Throws:

java.lang.InterruptedException - the InterruptedException

releaseInterruptibly

public void releaseInterruptibly(java.lang.Object o,
                                 long timeout,
                                 java.util.concurrent.TimeUnit unit)
                          throws java.lang.InterruptedException

release memory by Object. this method response to interrupts.

Parameters:

o - memory size to be applied by calculating

timeout - max time to wait

unit - time unit

Throws:

java.lang.InterruptedException - the InterruptedException

reset

public void reset()

reset this MemoryLimiter.