de.hybris.platform.util

Class ThreadUtilities

java.lang.Object

de.hybris.platform.util.ThreadUtilities

public final class ThreadUtilities
extends Object

utility methods for Thread handling

Method Summary

Modifier and Type	Method and Description
protected static Set	getAllThreads()
static int	getNumberOfAvailableCores()
static int	getNumberOfThreadsFromExpression(String expression, int defaultValue) Evaluates an expression and returns its value.
static int	getThreadCount() get the number of threads, not limited by thread group or activity
static Map	getThreadCountMap()
static String	printThreadDump()
static void	printThreadDump(PrintStream out)

Methods inherited from class java.lang.Object

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

Method Detail

getAllThreads

protected static Set getAllThreads()

getThreadCount

public static int getThreadCount()

get the number of threads, not limited by thread group or activity

getThreadCountMap

public static Map getThreadCountMap()

Returns:

a map containing thread class Class -> instance count Integer

printThreadDump

public static void printThreadDump(PrintStream out)

printThreadDump

public static String printThreadDump()

getNumberOfThreadsFromExpression

public static int getNumberOfThreadsFromExpression(String expression,
                                                   int defaultValue)

Evaluates an expression and returns its value. If expression can't be evaluated a given default value will be returned. In expression you can use #cores variable which holds number of cores. In case when expression evaluates to value lower than 1 value 1 will be returned.

Examples of valid expressions:

• 7
• #cores
• #cores * 2
• #cores - 1

Parameters:

expression - expression to evaluate

defaultValue - default value which must be greater than zero

Returns:

value of expression or default value

getNumberOfAvailableCores

public static int getNumberOfAvailableCores()