mirror of
https://gitlab.com/freepascal.org/fpc/source.git
synced 2025-04-06 00:47:52 +02:00
fd070544db
raising an exception inside a signal handler is inherently unsafe
and often causes actual crashes on darwin (mantis #9930).
- removed an unused global typed constant (in_const_evaluation)
- removed {$ifdef havelinuxrtl10} code
git-svn-id: trunk@12826 -
88 lines
2.0 KiB
ObjectPascal
88 lines
2.0 KiB
ObjectPascal
{
|
|
Copyright (c) 1998-2002 by Michael Van Canneyt
|
|
|
|
Unit to catch segmentation faults and Ctrl-C and exit gracefully
|
|
under linux and go32v2
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 2 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to the Free Software
|
|
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
|
|
*********************************************************************
|
|
}
|
|
Unit catch;
|
|
|
|
{$i fpcdefs.inc}
|
|
|
|
{$ifdef DEBUG}
|
|
{$define NOCATCH}
|
|
{$endif DEBUG}
|
|
|
|
interface
|
|
uses
|
|
{ you cannot safely raise an exception inside a signal handler on any OS,
|
|
and on darwin this even often crashes
|
|
}
|
|
{$if defined(unix) and not defined(darwin) }
|
|
{$ifndef darwin}
|
|
{$define has_signal}
|
|
BaseUnix,Unix,
|
|
{$endif}
|
|
{$endif}
|
|
{$ifdef go32v2}
|
|
{$define has_signal}
|
|
dpmiexcp,
|
|
{$endif}
|
|
{$ifdef watcom}
|
|
{$define has_signal}
|
|
dpmiexcp,
|
|
{$endif}
|
|
verbose;
|
|
|
|
{$ifdef has_signal}
|
|
Var
|
|
NewSignal,
|
|
OldSigInt : SignalHandler;
|
|
{$endif}
|
|
|
|
Implementation
|
|
|
|
uses
|
|
comphook;
|
|
|
|
{$ifdef has_signal}
|
|
{$ifdef unix}
|
|
Procedure CatchSignal(Sig : Longint);cdecl;
|
|
{$else}
|
|
Function CatchSignal(Sig : longint):longint; cdecl;
|
|
{$endif}
|
|
begin
|
|
case Sig of
|
|
SIGINT :
|
|
raise EControlCAbort.Create;
|
|
end;
|
|
{$ifndef unix}
|
|
CatchSignal:=0;
|
|
{$endif}
|
|
end;
|
|
{$endif def has_signal}
|
|
|
|
begin
|
|
{$ifndef nocatch}
|
|
{$ifdef has_signal}
|
|
NewSignal:=SignalHandler(@CatchSignal);
|
|
OldSigInt:={$ifdef Unix}fpSignal{$else}Signal{$endif}(SIGINT,NewSignal);
|
|
{$endif}
|
|
{$endif nocatch}
|
|
end.
|