com.hazelcast.memory

Class FreeMemoryChecker

java.lang.Object

com.hazelcast.memory.FreeMemoryChecker

public final class FreeMemoryChecker
extends Object

Class which checks if there is enough free native memory for allocation. If disabled, acts as if the check for free memory succeeded.

Field Summary

Fields

Modifier and Type	Field and Description
static com.hazelcast.spi.properties.HazelcastProperty	FREE_MEMORY_CHECKER_ENABLED Hazelcast XML and system property for setting if free memory checking is enabled.
static String	HIDENSITY_CHECK_FREEMEMORY Name of the property for enabling or disabling the free memory checking.

Constructor Summary

Constructors

Constructor and Description
FreeMemoryChecker(com.hazelcast.spi.properties.HazelcastProperties properties)

Method Summary

Modifier and Type	Method and Description
void	checkFreeMemory(long size) If enabled and is able to fetch memory statistics via OperatingSystemMXBean, checks if there is enough free physical memory for the requested number of bytes.

Methods inherited from class java.lang.Object

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

Field Detail

HIDENSITY_CHECK_FREEMEMORY

public static final String HIDENSITY_CHECK_FREEMEMORY

Name of the property for enabling or disabling the free memory checking.

See Also:

Constant Field Values

FREE_MEMORY_CHECKER_ENABLED

public static final com.hazelcast.spi.properties.HazelcastProperty FREE_MEMORY_CHECKER_ENABLED

Hazelcast XML and system property for setting if free memory checking is enabled.

Constructor Detail

FreeMemoryChecker

public FreeMemoryChecker(com.hazelcast.spi.properties.HazelcastProperties properties)

Method Detail

checkFreeMemory

public void checkFreeMemory(long size)

If enabled and is able to fetch memory statistics via OperatingSystemMXBean, checks if there is enough free physical memory for the requested number of bytes. If the free memory checker is disabled, acts as if the check succeeded.

Parameters:

size - the number of bytes that need to be allocated