{
    $Id$
    Copyright (c) 1997-98 by Michael Van Canneyt

    Unit to catch segmentation faults and Ctrl-C and exit gracefully
    under linux and go32v2

    See the file COPYING.FPC, included in this distribution,
    for details about the copyright.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

 **********************************************************************}
Unit fpcatch;
interface

{$ifdef linux}
{$define has_signal}
uses
  linux;
{$endif}
{$ifdef go32v2}
{$define has_signal}
uses
  dpmiexcp;
{$endif}

{$ifdef has_signal}
Var
  NewSignal,OldSigSegm,OldSigInt : SignalHandler;
{$endif}


Implementation

uses
  app,commands,msgbox,
  fpide,fpviews;


{$ifdef has_signal}
{$ifdef linux}
Procedure CatchSignal(Sig : Integer);cdecl;
{$else}
Function CatchSignal(Sig : longint):longint;
{$endif}
var CanQuit: boolean;
begin
  case Sig of
   SIGSEGV : begin
               if Assigned(Application) then MyApp.Done;
               Writeln('Internal Error caught');
               Halt;
             end;
    SIGINT : begin
               if Assigned(Application) then
                 CanQuit:=MessageBox(#3'Do You really want to quit?',nil,mferror+mfyesbutton+mfnobutton)=cmYes
               else
                 CanQuit:=true;
               if CanQuit then
                begin
                  if Assigned(Application) then MyApp.Done;
                  Halt;
                end;
             end;
  end;
{$ifndef linux}
  CatchSignal:=0;
{$endif}
end;
{$endif def has_signal}


begin
{$ifdef has_signal}
{$ifndef TP}
  NewSignal:=SignalHandler(@CatchSignal);
{$else TP}
  NewSignal:=SignalHandler(CatchSignal);
{$endif TP}
  OldSigSegm:=Signal (SIGSEGV,NewSignal);
  OldSigInt:=Signal (SIGINT,NewSignal);
{$endif}
end.

{
  $Log$
  Revision 1.2  1999-04-07 21:55:42  peter
    + object support for browser
    * html help fixes
    * more desktop saving things
    * NODEBUG directive to exclude debugger

  Revision 1.1  1999/02/20 15:18:28  peter
    + ctrl-c capture with confirm dialog
    + ascii table in the tools menu
    + heapviewer
    * empty file fixed
    * fixed callback routines in fpdebug to have far for tp7

}