//
// samskivert library - useful routines for java programs
// Copyright (C) 2001-2012 Michael Bayne, et al.
// http://github.com/samskivert/samskivert/blob/master/COPYING
package com.samskivert.util;
import sun.misc.Signal;
import sun.misc.SignalHandler;
/**
* A wrapper around Sun's internal signal handling bits that can be used to avoid a) an explicit
* dependency on Sun's internal stuff (assuming they deprecate that and replace it with something
* actually supported some day) and b) a slew of unsuppressable warnings every time you compile
* your project.
*/
public class SignalUtil
{
public static enum Number {
HUP(1), /* Hangup (POSIX). */
INT(2), /* Interrupt (ANSI). */
QUIT(3), /* Quit (POSIX). */
ILL(4), /* Illegal instruction (ANSI). */
TRAP(5), /* Trace trap (POSIX). */
ABRT(6), /* Abort (ANSI). */
IOT(6), /* IOT trap (4.2 BSD). */
BUS(7), /* BUS error (4.2 BSD). */
FPE(8), /* Floating-point exception (ANSI). */
KILL(9), /* Kill, unblockable (POSIX). */
USR1(10), /* User-defined signal 1 (POSIX). */
SEGV(11), /* Segmentation violation (ANSI). */
USR2(12), /* User-defined signal 2 (POSIX). */
PIPE(13), /* Broken pipe (POSIX). */
ALRM(14), /* Alarm clock (POSIX). */
TERM(15), /* Termination (ANSI). */
STKFLT(16), /* Stack fault. */
CHLD(17), /* Child status has changed (POSIX). */
CONT(18), /* Continue (POSIX). */
STOP(19), /* Stop, unblockable (POSIX). */
TSTP(20), /* Keyboard stop (POSIX). */
TTIN(21), /* Background read from tty (POSIX). */
TTOU(22), /* Background write to tty (POSIX). */
URG(23), /* Urgent condition on socket (4.2 BSD). */
XCPU(24), /* CPU limit exceeded (4.2 BSD). */
XFSZ(25), /* File size limit exceeded (4.2 BSD). */
VTALRM(26), /* Virtual alarm clock (4.2 BSD). */
PROF(27), /* Profiling alarm clock (4.2 BSD). */
WINCH(28), /* Window size change (4.3 BSD, Sun). */
IO(29), /* I/O now possible (4.2 BSD). */
POLL(29), /* Pollable event occurred (System V). */
PWR(30), /* Power failure restart (System V). */
SYS(31); /* Bad system call. */
public int signo () {
return _signo;
}
Number (int signo) {
_signo = signo;
}
protected int _signo;
}
public static interface Handler {
public void signalReceived (Number number);
}
public static final void register (final Number number, final Handler handler)
{
Signal.handle(new Signal(number.toString()), new SignalHandler() {
public void handle (Signal sig) {
handler.signalReceived(number);
}
});
}
}