Package one.nio.os.perf

Class Perf

java.lang.Object

one.nio.os.perf.Perf

public class Perf
extends Object

Field Summary

Fields

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

Constructor Summary

Constructors

Constructor	Description
Perf()

Method Summary

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

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 Details

Perf

public Perf()

Method Details

open

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

Throws:

IOException

open

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

Throws:

IOException

openGlobal

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

Throws:

IOException

openFile

public static int openFile(String fileName)
                    throws IOException

Throws:

IOException

close

public static void close(int fd)