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56 lines
1.8 KiB
C
56 lines
1.8 KiB
C
/* mischelp.h
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* Copyright (C) 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
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*
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* This file is part of GnuPG.
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*
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* GnuPG 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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*
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* GnuPG 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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*
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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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
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* USA.
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*/
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#ifndef LIBJNLIB_MISCHELP_H
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#define LIBJNLIB_MISCHHELP_H
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#define DIM(v) (sizeof(v)/sizeof((v)[0]))
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#define DIMof(type,member) DIM(((type *)0)->member)
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#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 5 )
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# define JNLIB_GCC_M_FUNCTION 1
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# define JNLIB_GCC_A_NR __attribute__ ((noreturn))
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# define JNLIB_GCC_A_PRINTF( f, a ) __attribute__ ((format (printf,f,a)))
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# define JNLIB_GCC_A_NR_PRINTF( f, a ) \
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__attribute__ ((noreturn, format (printf,f,a)))
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#else
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# define JNLIB_GCC_A_NR
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# define JNLIB_GCC_A_PRINTF( f, a )
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# define JNLIB_GCC_A_NR_PRINTF( f, a )
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#endif
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/* To avoid that a compiler optimizes certain memset calls away, these
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macros may be used instead. */
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#define wipememory2(_ptr,_set,_len) do { \
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volatile char *_vptr=(volatile char *)(_ptr); \
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size_t _vlen=(_len); \
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while(_vlen) { *_vptr=(_set); _vptr++; _vlen--; } \
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} while(0)
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#define wipememory(_ptr,_len) wipememory2(_ptr,0,_len)
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#endif /*LIBJNLIB_MISCHELP_H*/
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