mirror of
https://gitlab.com/freepascal.org/fpc/source.git
synced 2025-11-04 14:59:37 +01:00
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 {$ifdef havelinuxrtl10} code
git-svn-id: trunk@12826 -
88 lines
2.0 KiB
ObjectPascal
88 lines
2.0 KiB
ObjectPascal
{
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Copyright (c) 1998-2002 by Michael Van Canneyt
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Unit to catch segmentation faults and Ctrl-C and exit gracefully
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under linux and go32v2
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*********************************************************************
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}
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Unit catch;
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{$i fpcdefs.inc}
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{$ifdef DEBUG}
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{$define NOCATCH}
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{$endif DEBUG}
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interface
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uses
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{ you cannot safely raise an exception inside a signal handler on any OS,
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and on darwin this even often crashes
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}
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{$if defined(unix) and not defined(darwin) }
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{$ifndef darwin}
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{$define has_signal}
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BaseUnix,Unix,
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{$endif}
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{$endif}
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{$ifdef go32v2}
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{$define has_signal}
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dpmiexcp,
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{$endif}
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{$ifdef watcom}
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{$define has_signal}
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dpmiexcp,
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{$endif}
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verbose;
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{$ifdef has_signal}
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Var
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NewSignal,
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OldSigInt : SignalHandler;
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{$endif}
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Implementation
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uses
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comphook;
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{$ifdef has_signal}
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{$ifdef unix}
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Procedure CatchSignal(Sig : Longint);cdecl;
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{$else}
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Function CatchSignal(Sig : longint):longint; cdecl;
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{$endif}
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begin
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case Sig of
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SIGINT :
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raise EControlCAbort.Create;
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end;
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{$ifndef unix}
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CatchSignal:=0;
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{$endif}
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end;
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{$endif def has_signal}
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begin
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{$ifndef nocatch}
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{$ifdef has_signal}
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NewSignal:=SignalHandler(@CatchSignal);
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OldSigInt:={$ifdef Unix}fpSignal{$else}Signal{$endif}(SIGINT,NewSignal);
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{$endif}
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{$endif nocatch}
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end.
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