one.nio.os.perf

Class Perf

java.lang.Object

one.nio.os.perf.Perf

public class Perf
extends java.lang.Object

Field Summary

Fields

Modifier and Type	Field and Description
static int	ANY_CPU
static int	ANY_PID
static int	CURRENT_PID
static boolean	IS_SUPPORTED

Constructor Summary

Constructors

Constructor and Description
Perf()

Method Summary

Modifier and Type	Method and Description
static void	close(int fd)
static PerfCounter	open(PerfEvent event, int pid, int cpu, PerfOption... options)
static PerfCounter	open(PerfEvent event, java.lang.String cgroup, int cpu, PerfOption... options)
static int	openFile(java.lang.String fileName)
static PerfCounterGlobal	openGlobal(PerfEvent event, int pid, PerfOption... options)

Methods inherited from class java.lang.Object

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

Field Detail

IS_SUPPORTED

public static final boolean IS_SUPPORTED

CURRENT_PID

public static final int CURRENT_PID

See Also:

Constant Field Values

ANY_PID

public static final int ANY_PID

See Also:

Constant Field Values

ANY_CPU

public static final int ANY_CPU

See Also:

Constant Field Values

Constructor Detail

Perf

public Perf()

Method Detail

open

public static PerfCounter open(PerfEvent event,
                               int pid,
                               int cpu,
                               PerfOption... options)
                        throws java.io.IOException

Throws:

java.io.IOException

open

public static PerfCounter open(PerfEvent event,
                               java.lang.String cgroup,
                               int cpu,
                               PerfOption... options)
                        throws java.io.IOException

Throws:

java.io.IOException

openGlobal

public static PerfCounterGlobal openGlobal(PerfEvent event,
                                           int pid,
                                           PerfOption... options)
                                    throws java.io.IOException

Throws:

java.io.IOException

openFile

public static int openFile(java.lang.String fileName)
                    throws java.io.IOException

Throws:

java.io.IOException

close

public static void close(int fd)