javax.realtime
Class POSIXSignalHandler

java.lang.Object
  |
  +--javax.realtime.POSIXSignalHandler

public final class POSIXSignalHandler

extends java.lang.Object

Use instances of AsyncEvent to handle POSIX signals. Usage:

POSIXSignalHandler.addHandler(SIGINT, intHandler);

This class is required to be implemented only if the underlying system supports POSIX signals.

Field Summary

private static int	MAX_SIG
static int	SIGABRT Used by abort, replace SIBIOT in the future.
static int	SIGALRM Alarm clock.
static int	SIGBUS Bus error.
static int	SIGCANCEL Thread cancellation signal used by libthread.
static int	SIGCHLD Child status change alis (POSIX).
static int	SIGCLD Child status change.
static int	SIGCONT Stopped process has been continued.
static int	SIGEMT EMT instructions.
static int	SIGFPE Floaating point exception.
static int	SIGFREEZE Special signal used by CPR.
static int	SIGHUP Hangup.
static int	SIGILL Illegal instruction (not reset when caught).
static int	SIGINT Interrupt (rubout).
static int	SIGIO Socked I/O possible (SIGPOLL alias).
static int	SIGIOT IOT instruction.
static int	SIGKILL Kill (cannot be caught or ignored).
static int	SIGLOST Resource lost (e.g., record-lock lost).
static int	SIGLWP Special signal used by thread library.
private static javax.realtime.AsyncEvent[]	signalsHandlersList
static int	SIGPIPE Write on a pipe with no one to read it.
static int	SIGPOLL Pollable event occured.
static int	SIGPROF Profiling timer expired.
static int	SIGPWR Power-fail restart.
static int	SIGQUIT Quit (ASCII FS).
static int	SIGSEGV Segmentation violation.
static int	SIGSTOP Stop (cannot be caught or ignored).
static int	SIGSYS Bad argument to system call.
static int	SIGTERM Software termination signal from kill.
static int	SIGTHAW Special signal used by CPR.
static int	SIGTRAP Trace trap (not reset when caught).
static int	SIGTSTP User stop requested from tty.
static int	SIGTTIN Background tty read attempted.
static int	SIGTTOU Background tty write attempted.
static int	SIGURG Urgent socket condition.
static int	SIGUSR1 User defined signal = 1.
static int	SIGUSR2 User defined signal = 2.
static int	SIGVTALRM Virtual timer expired.
static int	SIGWAITING Process's lwps are blocked.
static int	SIGWINCH Window size change.
static int	SIGXCPU Exceeded cpu limit.
static int	SIGXFSZ Exceeded file size limit.

Constructor Summary

POSIXSignalHandler()

Method Summary

static void	addHandler(int signal, javax.realtime.AsyncEventHandler handler) Add the given AsyncEventHandler to the list of handlers of the AsyncEvent of the given signal.
static void	removeHandler(int signal, javax.realtime.AsyncEventHandler handler) Remove the given AsyncEventHandler to the list of handlers of the AsyncEvent of the given signal.
static void	setHandler(int signal, javax.realtime.AsyncEventHandler handler) Set the given AsyncEventHandler as the handler of the AsyncEvent of the given signal.
private void	setSignals() Assigns machine-dependent values to all SIGxxxx constants.

Methods inherited from class java.lang.Object

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

Field Detail

SIGABRT

public static int SIGABRT

Used by abort, replace SIBIOT in the future.

SIGALRM

public static int SIGALRM

Alarm clock.

SIGBUS

public static int SIGBUS

Bus error.

SIGCANCEL

public static int SIGCANCEL

Thread cancellation signal used by libthread.

SIGCHLD

public static int SIGCHLD

Child status change alis (POSIX).

SIGCLD

public static int SIGCLD

Child status change.

SIGCONT

public static int SIGCONT

Stopped process has been continued.

SIGEMT

public static int SIGEMT

EMT instructions.

SIGFPE

public static int SIGFPE

Floaating point exception.

SIGFREEZE

public static int SIGFREEZE

Special signal used by CPR.

SIGHUP

public static int SIGHUP

Hangup.

SIGILL

public static int SIGILL

Illegal instruction (not reset when caught).

SIGINT

public static int SIGINT

Interrupt (rubout).

SIGIO

public static int SIGIO

Socked I/O possible (SIGPOLL alias).

SIGIOT

public static int SIGIOT

IOT instruction.

SIGKILL

public static int SIGKILL

Kill (cannot be caught or ignored).

SIGLOST

public static int SIGLOST

Resource lost (e.g., record-lock lost).

SIGLWP

public static int SIGLWP

Special signal used by thread library.

SIGPIPE

public static int SIGPIPE

Write on a pipe with no one to read it.

SIGPOLL

public static int SIGPOLL

Pollable event occured.

SIGPROF

public static int SIGPROF

Profiling timer expired.

SIGPWR

public static int SIGPWR

Power-fail restart.

SIGQUIT

public static int SIGQUIT

Quit (ASCII FS).

SIGSEGV

public static int SIGSEGV

Segmentation violation.

SIGSTOP

public static int SIGSTOP

Stop (cannot be caught or ignored).

SIGSYS

public static int SIGSYS

Bad argument to system call.

SIGTERM

public static int SIGTERM

Software termination signal from kill.

SIGTHAW

public static int SIGTHAW

Special signal used by CPR.

SIGTRAP

public static int SIGTRAP

Trace trap (not reset when caught).

SIGTSTP

public static int SIGTSTP

User stop requested from tty.

SIGTTIN

public static int SIGTTIN

Background tty read attempted.

SIGTTOU

public static int SIGTTOU

Background tty write attempted.

SIGURG

public static int SIGURG

Urgent socket condition.

SIGUSR1

public static int SIGUSR1

User defined signal = 1.

SIGUSR2

public static int SIGUSR2

User defined signal = 2.

SIGVTALRM

public static int SIGVTALRM

Virtual timer expired.

SIGWAITING

public static int SIGWAITING

Process's lwps are blocked.

SIGWINCH

public static int SIGWINCH

Window size change.

SIGXCPU

public static int SIGXCPU

Exceeded cpu limit.

SIGXFSZ

public static int SIGXFSZ

Exceeded file size limit.

MAX_SIG

private static final int MAX_SIG

See Also:

Constant Field Values

signalsHandlersList

private static javax.realtime.AsyncEvent[] signalsHandlersList

Constructor Detail

POSIXSignalHandler

public POSIXSignalHandler()

Method Detail

addHandler

public static void addHandler(int signal,
                              javax.realtime.AsyncEventHandler handler)

Add the given AsyncEventHandler to the list of handlers of the AsyncEvent of the given signal.

Parameters:

signal - One of the POSIX signals from this (e.g., this.SIGLOST). If the value given to signal is not one of the POSIX signals then a java.lang.IllegalArgumentException will be thrown.

handler - An AsyncEventHandler which will be scheduled when the given signal occurs.

removeHandler

public static void removeHandler(int signal,
                                 javax.realtime.AsyncEventHandler handler)

Remove the given AsyncEventHandler to the list of handlers of the AsyncEvent of the given signal.

Parameters:

signal - One of the POSIX signals from this (e.g., this.SIGLOST). If the value given to signal is not one of the POSIX signals then a java.lang.IllegalArgumentException will be thrown.

handler - An AsyncEventHandler which will be scheduled when the given signal occurs.

setHandler

public static void setHandler(int signal,
                              javax.realtime.AsyncEventHandler handler)

Set the given AsyncEventHandler as the handler of the AsyncEvent of the given signal.

Parameters:

signal - One of the POSIX signals from this (e.g., this.SIGLOST). If the value given to signal is not one of the POSIX signals then a java.lang.IllegalArgumentException will be thrown.

handler - An AsyncEventHandler which will be scheduled when the given signal occurs. If handler is null then no handler will be associated with this (i.e., remove all handlers).

setSignals

private void setSignals()

Assigns machine-dependent values to all SIGxxxx constants.