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Summary

public interface  SignalListener
{
          // Fields 10
     public static final int SIGFPE;
     public static final int SIGHUP;
     public static final int SIGILL;
     public static final int SIGINT;
     public static final int SIGKILL;
     public static final int SIGQUIT;
     public static final int SIGTERM;
     public static final int SIGTRAP;
     public static final int SIG_MAX;
     public static final int SIG_MIN;

          // Methods 2
     public abstract boolean isInterested(int);
     public abstract void signalReceived(int);
}

Copyright 1998 Kevin Hester, kevinh@geeksville.com Commerical use prohibited - non commercial distribution is OK. Contact the author for further information.

Cross Reference

Implemented By:

SignalTest

   public static final int SIGFPE

   public static final int SIGHUP

   public static final int SIGILL

   public static final int SIGINT

   public static final int SIGKILL

   public static final int SIGQUIT

   public static final int SIGTERM

   public static final int SIGTRAP

   public static final int SIG_MAX

   public static final int SIG_MIN

Signal Value Action Comment ------------------------------------------------------------------------ SIGHUP 1 A Hangup detected on controlling terminal or death of controlling process SIGINT 2 A Interrupt from keyboard SIGQUIT 3 A Quit from keyboard SIGILL 4 A Illegal Instruction SIGABRT 6 C Abort signal from abort(3) SIGFPE 8 C Floating point exception SIGKILL 9 AEF Kill signal SIGSEGV 11 C Invalid memory reference SIGPIPE 13 A Broken pipe: write to pipe with no readers SIGALRM 14 A Timer signal from alarm(1) SIGTERM 15 A Termination signal SIGUSR1 30,10,16 A User-defined signal 1 SIGUSR2 31,12,17 A User-defined signal 2 SIGCHLD 20,17,18 B Child stopped or terminated SIGCONT 19,18,25 Continue if stopped SIGSTOP 17,19,23 DEF Stop process SIGTSTP 18,20,24 D Stop typed at tty SIGTTIN 21,21,26 D tty input for background process SIGTTOU 22,22,27 D tty output for background process Next various other signals. Signal Value Action Comment --------------------------------------------------------------------- SIGTRAP 5 CG Trace/breakpoint trap SIGIOT 6 CG IOT trap. A synonym for SIGABRT SIGEMT 7,-,7 G SIGBUS 10,7,10 AG Bus error SIGSYS 12,-,12 G Bad argument to routine (SVID) SIGSTKFLT -,16,- AG Stack fault on coprocessor SIGURG 16,23,21 BG Urgent condition on socket (4.2 BSD) SIGIO 23,29,22 AG I/O now possible (4.2 BSD) SIGPOLL AG A synonym for SIGIO (System V) SIGCLD -,-,18 G A synonym for SIGCHLD SIGXCPU 24,24,30 AG CPU time limit exceeded (4.2 BSD) SIGXFSZ 25,25,31 AG File size limit exceeded (4.2 BSD) SIGVTALRM 26,26,28 AG Virtual alarm clock (4.2 BSD) SIGPROF 27,27,29 AG Profile alarm clock SIGPWR 29,30,19 AG Power failure (System V) SIGINFO 29,-,- G A synonym for SIGPWR SIGLOST -,-,- AG File lock lost SIGWINCH 28,28,20 BG Window resize signal (4.3 BSD, Sun) SIGUNUSED -,31,- AG Unused signal

Methods

· isInterested

Summary  |  Top

   public abstract boolean isInterested(int signalNum) 

Called to determine if this listener is interested in a particular signal number. Your handler will need to implement this method to tell JavaSignals what signals you want to be called for.

Parameter	Description
signalNum	a UNIX signal number - ie SIGKILL

   public abstract void signalReceived(int signalNum) 

Called when the signal is generated by the operating system.

Parameter	Description
signalNum	a UNIX signal number - ie SIGKILL

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