usr/src/cmd/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 1.23 2003/11/04 18:51:54 ca Exp $
  10  */
  11
  12 #pragma ident   "%Z%%M% %I%     %E% SMI"
  13
  14 /*
  15 **  libsm general definitions
  16 **  See libsm/gen.html for documentation.
  17 */
  18
  19 #ifndef SM_GEN_H
  20 # define SM_GEN_H
  21
  22 # include <sm/config.h>
  23 # include <sm/cdefs.h>
  24 # include <sm/types.h>
  25
  26 /*
  27 **  Define SM_RCSID and SM_IDSTR,
  28 **  macros used to embed RCS and SCCS identification strings in object files.
  29 */
  30
  31 # ifdef lint
  32 #  define SM_RCSID(str)
  33 #  define SM_IDSTR(id,str)
  34 # else /* lint */
  35 #  define SM_RCSID(str) SM_UNUSED(static const char RcsId[]) = str;
  36 #  define SM_IDSTR(id,str) SM_UNUSED(static const char id[]) = str;
  37 # endif /* lint */
  38
  39 /*
  40 **  Define NULL and offsetof (from the C89 standard)
  41 */
  42
  43 # if SM_CONF_STDDEF_H
  44 #  include <stddef.h>
  45 # else /* SM_CONF_STDDEF_H */
  46 #  ifndef NULL
  47 #   define NULL 0
  48 #  endif /* ! NULL */
  49 #  define offsetof(type, member)        ((size_t)(&((type *)0)->member))
  50 # endif /* SM_CONF_STDDEF_H */
  51
  52 /*
  53 **  Define bool, true, false (from the C99 standard)
  54 */
  55
  56 # if SM_CONF_STDBOOL_H
  57 #  include <stdbool.h>
  58 # else /* SM_CONF_STDBOOL_H */
  59 #  ifndef __cplusplus
  60     typedef int bool;
  61 #   define false        0
  62 #   define true         1
  63 #   define __bool_true_false_are_defined        1
  64 #  endif /* ! __cplusplus */
  65 # endif /* SM_CONF_STDBOOL_H */
  66
  67 /*
  68 **  Define SM_MAX and SM_MIN
  69 */
  70
  71 # define SM_MAX(a, b)   ((a) > (b) ? (a) : (b))
  72 # define SM_MIN(a, b)   ((a) < (b) ? (a) : (b))
  73
  74 /* Define SM_SUCCESS and SM_FAILURE */
  75 # define SM_SUCCESS     0
  76 # define SM_FAILURE     (-1)
  77
  78 /* XXX This needs to be fixed when we start to use threads: */
  79 typedef int SM_ATOMIC_INT_T;
  80 typedef unsigned int SM_ATOMIC_UINT_T;
  81
  82 #endif /* SM_GEN_H */