ROOT
6.14/05
Reference Guide
core
base
inc
TException.h
Go to the documentation of this file.
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// @(#)root/base:$Id$
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// Author: Fons Rademakers 21/09/95
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/*************************************************************************
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* Copyright (C) 1995-2000, Rene Brun and Fons Rademakers. *
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* All rights reserved. *
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* *
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* For the licensing terms see $ROOTSYS/LICENSE. *
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* For the list of contributors see $ROOTSYS/README/CREDITS. *
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*************************************************************************/
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#ifndef ROOT_TException
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#define ROOT_TException
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//////////////////////////////////////////////////////////////////////////
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// //
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// Exception Handling //
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// //
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// Provide some macro's to simulate the coming C++ try, catch and throw //
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// exception handling functionality. //
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// //
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//////////////////////////////////////////////////////////////////////////
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#ifndef __CINT__
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#include <setjmp.h>
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#else
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struct
sigjmp_buf;
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struct
jmp_buf;
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#endif
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#include <
ROOT/RConfig.h
>
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#include "
DllImport.h
"
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struct
ExceptionContext_t
{
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#ifdef NEED_SIGJMP
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sigjmp_buf
fBuf
;
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#else
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jmp_buf
fBuf
;
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#endif
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};
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#ifdef NEED_SIGJMP
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# define SETJMP(buf) sigsetjmp(buf,1)
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#else
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#define SETJMP(buf) setjmp(buf)
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#endif
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#define RETRY \
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{ \
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static ExceptionContext_t R__curr, *R__old = gException; \
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int R__code; \
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gException = &R__curr; \
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R__code = SETJMP(gException->fBuf); if (R__code) { }; {
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#define TRY \
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{ \
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static ExceptionContext_t R__curr, *R__old = gException; \
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int R__code; \
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gException = &R__curr; \
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if ((R__code = SETJMP(gException->fBuf)) == 0) {
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#define CATCH(n) \
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gException = R__old; \
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} else { \
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int n = R__code; \
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gException = R__old;
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#define ENDTRY \
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} \
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gException = R__old; \
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}
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R__EXTERN
ExceptionContext_t
*
gException
;
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extern
void
Throw
(
int
code);
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#endif
gException
R__EXTERN ExceptionContext_t * gException
Definition:
TException.h:74
ExceptionContext_t
Definition:
TException.h:35
RConfig.h
DllImport.h
Throw
void Throw(int code)
If an exception context has been set (using the TRY and RETRY macros) jump back to where it was set...
Definition:
TException.cxx:27
R__EXTERN
#define R__EXTERN
Definition:
DllImport.h:27
ExceptionContext_t::fBuf
jmp_buf fBuf
Definition:
TException.h:39