contrib/sendmail/include/sm/gen.h

   1 /*
   2  * Copyright (c) 2000-2002 Sendmail, Inc. and its suppliers.
   3  *      All rights reserved.
   4  *
   5  * By using this file, you agree to the terms and conditions set
   6  * forth in the LICENSE file which can be found at the top level of
   7  * the sendmail distribution.
   8  *
   9  *      $Id: gen.h,v 1.22 2002/04/03 00:40:42 ca Exp $
  10  */
  11
  12 /*
  13 **  libsm general definitions
  14 **  See libsm/gen.html for documentation.
  15 */
  16
  17 #ifndef SM_GEN_H
  18 # define SM_GEN_H
  19
  20 # include <sm/config.h>
  21 # include <sm/cdefs.h>
  22 # include <sm/types.h>
  23
  24 /*
  25 **  Define SM_RCSID and SM_IDSTR,
  26 **  macros used to embed RCS and SCCS identification strings in object files.
  27 */
  28
  29 # ifdef lint
  30 #  define SM_RCSID(str)
  31 #  define SM_IDSTR(id,str)
  32 # else /* lint */
  33 #  define SM_RCSID(str) SM_UNUSED(static const char RcsId[]) = str;
  34 #  define SM_IDSTR(id,str) SM_UNUSED(static const char id[]) = str;
  35 # endif /* lint */
  36
  37 /*
  38 **  Define NULL and offsetof (from the C89 standard)
  39 */
  40
  41 # if SM_CONF_STDDEF_H
  42 #  include <stddef.h>
  43 # else /* SM_CONF_STDDEF_H */
  44 #  ifndef NULL
  45 #   define NULL 0
  46 #  endif
  47 #  define offsetof(type, member)        ((size_t)(&((type *)0)->member))
  48 # endif /* SM_CONF_STDDEF_H */
  49
  50 /*
  51 **  Define bool, true, false (from the C99 standard)
  52 */
  53
  54 # if SM_CONF_STDBOOL_H
  55 #  include <stdbool.h>
  56 # else /* SM_CONF_STDBOOL_H */
  57 #  ifndef __cplusplus
  58     typedef int bool;
  59 #   define false        0
  60 #   define true         1
  61 #  endif
  62 # endif /* SM_CONF_STDBOOL_H */
  63
  64 /*
  65 **  Define SM_MAX and SM_MIN
  66 */
  67
  68 # define SM_MAX(a, b)   ((a) > (b) ? (a) : (b))
  69 # define SM_MIN(a, b)   ((a) < (b) ? (a) : (b))
  70
  71 /* Define SM_SUCCESS and SM_FAILURE */
  72 # define SM_SUCCESS     0
  73 # define SM_FAILURE     (-1)
  74
  75 /* XXX This needs to be fixed when we start to use threads: */
  76 typedef int SM_ATOMIC_INT_T;
  77 typedef unsigned int SM_ATOMIC_UINT_T;
  78
  79 #endif /* SM_GEN_H */