/*
 * Copyright (c) 2000-2002 Sendmail, Inc. and its suppliers.
 *	All rights reserved.
 *
 * By using this file, you agree to the terms and conditions set
 * forth in the LICENSE file which can be found at the top level of
 * the sendmail distribution.
 *
 *	$Id: setjmp.h,v 1.3 2005/06/16 00:04:20 ca Exp $
 */

#ifndef SM_SETJMP_H
#define SM_SETJMP_H 1

#include "sm/generic.h"
#include <setjmp.h>

/*
**  sm_setjmp_sig is a setjmp that saves the signal mask.
**  sm_setjmp_nosig is a setjmp that does *not* save the signal mask.
**  SM_JMPBUF_T is used with both of the above macros.
**
**  On most systems, these can be implemented using sigsetjmp.
**  Some old BSD systems do not have sigsetjmp, but they do have
**  setjmp and _setjmp, which are just as good.
*/

#if SM_CONF_SIGSETJMP

typedef sigjmp_buf SM_JMPBUF_T;
# define sm_setjmp_sig(buf)		sigsetjmp(buf, 1)
# define sm_setjmp_nosig(buf)		sigsetjmp(buf, 0)
# define sm_longjmp_sig(buf, val)	siglongjmp(buf, val)
# define sm_longjmp_nosig(buf, val)	siglongjmp(buf, val)

#else /* SM_CONF_SIGSETJMP */

typedef jmp_buf SM_JMPBUF_T;
# define sm_setjmp_sig(buf)		setjmp(buf)
# define sm_longjmp_sig(buf, val)	longjmp(buf, val)
# ifdef WIN32
#  define sm_setjmp_nosig(buf)		setjmp(buf)
#  define sm_longjmp_nosig(buf, val)	longjmp(buf, val)
# else /* WIN32 */
#  define sm_setjmp_nosig(buf)		_setjmp(buf)
#  define sm_longjmp_nosig(buf, val)	_longjmp(buf, val)
# endif /* WIN32 */

#endif /* SM_CONF_SIGSETJMP */

#endif /* ! SM_SETJMP_H */