org.openjdk.jmh.util

Class Utils

java.lang.Object

org.openjdk.jmh.util.Utils

public class Utilsextends Object

Method Summary

Methods

Modifier and Type	Method and Description
static void	check(Class<?> klass, String... fieldNames)
static void	check(Class<?> klass, String fieldName)
static String[]	concat(String[] t1, String[] t2)
static int	figureOutHotCPUs() Warm up the CPU schedulers, bring all the CPUs online to get the reasonable estimate of the system capacity.
static String	getCurrentJvm()
static long	getOffset(Class<?> klass, String fieldName)
static long	getPid() Gets PID of the current JVM.
static Charset	guessConsoleEncoding()
static boolean	isWindows()
static String	join(Collection<String> src, String delim)
static String	join(String[] src, String delim)
static String	marshalIntArray(int[] arr)
static int	roundUp(int v, int quant)
static int	sum(int[] arr)
static String	throwableToString(Throwable t)
static Collection<String>	tryWith(String... cmd)
static int[]	unmarshalIntArray(String src)

Methods inherited from class java.lang.Object

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

Method Detail

concat

public static String[] concat(String[] t1,              String[] t2)

join

public static String join(Collection<String> src,          String delim)

join

public static String join(String[] src,          String delim)

sum

public static int sum(int[] arr)

roundUp

public static int roundUp(int v,          int quant)

throwableToString

public static String throwableToString(Throwable t)

unmarshalIntArray

public static int[] unmarshalIntArray(String src)

marshalIntArray

public static String marshalIntArray(int[] arr)

figureOutHotCPUs

public static int figureOutHotCPUs()

Warm up the CPU schedulers, bring all the CPUs online to get the reasonable estimate of the system capacity. Some systems, notably embedded Linuxes, power down the idle CPUs and so availableProcessors() may report lower CPU count than would be present after the load-up.

Returns:

max CPU count

guessConsoleEncoding

public static Charset guessConsoleEncoding()

check

public static void check(Class<?> klass,         String... fieldNames)

check

public static void check(Class<?> klass,         String fieldName)

getOffset

public static long getOffset(Class<?> klass,             String fieldName)

isWindows

public static boolean isWindows()

getCurrentJvm

public static String getCurrentJvm()

getPid

public static long getPid()

Gets PID of the current JVM.

Returns:

PID.

tryWith

public static Collection<String> tryWith(String... cmd)