javax.realtime
Class POSIXSignalHandler

java.lang.Object
  javax.realtime.POSIXSignalHandler

public final class POSIXSignalHandler

extends Object

The class POSIXSignalHandler provides a way of handling POSIX signals by means of AsyncEventHandler.

Author:

Angelo Corsaro

Field Summary

protected boolean	enabled_
protected gnu.gcj.RawData	natHandler_
protected RealtimeThread	notificationThread
protected gnu.gcj.RawData	pipeID_
static int	SIGABRT
static int	SIGALRM
static int	SIGBUS
static int	SIGCHLD
static int	SIGCLD
static int	SIGCONT
static int	SIGFPE
static int	SIGHUP
static int	SIGILL
static int	SIGINT
static int	SIGIO
static int	SIGIOT
static int	SIGKILL
protected static int	SIGMAX
protected static int	SIGMIN
protected AsyncEvent[]	signalEvents
protected static int	SIGNUM
static int	SIGPIPE
static int	SIGPOLL
static int	SIGPROF
static int	SIGPWR
static int	SIGQUIT
static int	SIGSEGV
static int	SIGSTKFLT
static int	SIGSTOP
static int	SIGSYS
static int	SIGTERM
static int	SIGTRAP
static int	SIGTSTP
static int	SIGTTIN
static int	SIGTTOU
static int	SIGUNUSED
static int	SIGURG
static int	SIGUSR1
static int	SIGUSR2
static int	SIGVTALRM
static int	SIGWINCH
static int	SIGXCPU
static int	SIGXFSZ

Constructor Summary

POSIXSignalHandler()
Creates a new POSIXSignalHandler instance.

Method Summary

void	addHandler(int signum, AsyncEventHandler handler) Adds a handler for the given signal.
protected void	fini()
protected void	fireSignal(int signum)
protected void	init()
protected void	registerNativeHandler(int signum)
void	removeHandler(int signum, AsyncEventHandler handler) Removes the given handler for the given signal.
void	setHandler(int signum, AsyncEventHandler handler) Associate a new handler with the given POSIX signal, removing all existing handlers.
protected void	startDispatching()

Methods inherited from class java.lang.Object

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

Field Detail

SIGHUP

public static final int SIGHUP

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SIGINT

public static final int SIGINT

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SIGQUIT

public static final int SIGQUIT

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SIGILL

public static final int SIGILL

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SIGTRAP

public static final int SIGTRAP

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SIGABRT

public static final int SIGABRT

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SIGIOT

public static final int SIGIOT

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SIGBUS

public static final int SIGBUS

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SIGFPE

public static final int SIGFPE

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SIGKILL

public static final int SIGKILL

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SIGUSR1

public static final int SIGUSR1

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SIGSEGV

public static final int SIGSEGV

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SIGUSR2

public static final int SIGUSR2

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SIGPIPE

public static final int SIGPIPE

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SIGALRM

public static final int SIGALRM

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SIGTERM

public static final int SIGTERM

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SIGSTKFLT

public static final int SIGSTKFLT

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SIGCHLD

public static final int SIGCHLD

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SIGCLD

public static final int SIGCLD

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SIGCONT

public static final int SIGCONT

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SIGSTOP

public static final int SIGSTOP

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SIGTSTP

public static final int SIGTSTP

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SIGTTIN

public static final int SIGTTIN

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SIGTTOU

public static final int SIGTTOU

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SIGURG

public static final int SIGURG

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SIGXCPU

public static final int SIGXCPU

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SIGXFSZ

public static final int SIGXFSZ

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SIGVTALRM

public static final int SIGVTALRM

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SIGPROF

public static final int SIGPROF

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SIGWINCH

public static final int SIGWINCH

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SIGIO

public static final int SIGIO

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SIGPOLL

public static final int SIGPOLL

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SIGPWR

public static final int SIGPWR

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SIGSYS

public static final int SIGSYS

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SIGUNUSED

public static final int SIGUNUSED

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SIGNUM

protected static final int SIGNUM

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SIGMIN

protected static final int SIGMIN

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SIGMAX

protected static final int SIGMAX

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natHandler_

protected gnu.gcj.RawData natHandler_

pipeID_

protected gnu.gcj.RawData pipeID_

enabled_

protected boolean enabled_

signalEvents

protected AsyncEvent[] signalEvents

notificationThread

protected RealtimeThread notificationThread

Constructor Detail

POSIXSignalHandler

public POSIXSignalHandler()

Creates a new POSIXSignalHandler instance.

Method Detail

addHandler

public void addHandler(int signum,
                       AsyncEventHandler handler)

Adds a handler for the given signal.

Parameters:

signum - POSIX signal

handler - The handler that will handle the given signal.

removeHandler

public void removeHandler(int signum,
                          AsyncEventHandler handler)

Removes the given handler for the given signal.

Parameters:

signum - a POSIX signal number

handler - the handler to be removed

setHandler

public void setHandler(int signum,
                       AsyncEventHandler handler)

Associate a new handler with the given POSIX signal, removing all existing handlers. Since this affects the constraints expressed in the release parameters of the existing schedulable objects, this may change the feasibility of the current schedule.

Parameters:

signum - POSIX signal

handler - the new handler

fireSignal

protected final void fireSignal(int signum)

startDispatching

protected void startDispatching()

init

protected void init()

fini

protected void fini()

registerNativeHandler

protected void registerNativeHandler(int signum)