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62 lines
2.0 KiB
C
62 lines
2.0 KiB
C
/* mischelp.h - Miscellaneous helper macros and functions
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* Copyright (C) 1999, 2000, 2001, 2002, 2003,
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* 2006 Free Software Foundation, Inc.
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*
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* This file is part of JNLIB.
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*
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* JNLIB is free software; you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as
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* published by the Free Software Foundation; either version 2.1 of
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* the License, or (at your option) any later version.
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*
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* JNLIB is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, 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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#ifndef HAVE_TIMEGM
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#include <time.h>
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time_t timegm (struct tm *tm);
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#endif /*!HAVE_TIMEGM*/
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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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