libguile/stime.h

   1 /* classes: h_files */
   2
   3 #ifndef SCM_STIME_H
   4 #define SCM_STIME_H
   5
   6 /* Copyright (C) 1995,1996,1997,1998,2000, 2003, 2006, 2008 Free Software Foundation, Inc.
   7  *
   8  * This library is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2.1 of the License, or (at your option) any later version.
  12  *
  13  * This library is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with this library; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  21  */
  22
  23 \f
  24
  25 #include "libguile/__scm.h"
  26
  27 #include <unistd.h>  /* for sysconf */
  28
  29 \f
  30
  31 /* This should be figured out by autoconf.
  32
  33    sysconf(_SC_CLK_TCK) is best, since it's the actual running kernel, not
  34    some compile-time CLK_TCK.  On glibc 2.3.2 CLK_TCK (when defined) is in
  35    fact sysconf(_SC_CLK_TCK) anyway.
  36
  37    CLK_TCK is obsolete in POSIX.  In glibc 2.3.2 it's defined by default,
  38    but if you define _GNU_SOURCE or _POSIX_C_SOURCE to get other features
  39    then it goes away.  */
  40
  41 #if ! defined(SCM_TIME_UNITS_PER_SECOND) && defined(_SC_CLK_TCK)
  42 #  define SCM_TIME_UNITS_PER_SECOND ((int) sysconf (_SC_CLK_TCK))
  43 #endif
  44 #if ! defined(SCM_TIME_UNITS_PER_SECOND) && defined(CLK_TCK)
  45 #  define SCM_TIME_UNITS_PER_SECOND ((int) CLK_TCK)
  46 #endif
  47 #if ! defined(SCM_TIME_UNITS_PER_SECOND) && defined(CLOCKS_PER_SEC)
  48 #  define SCM_TIME_UNITS_PER_SECOND ((int) CLOCKS_PER_SEC)
  49 #endif
  50 #if ! defined(SCM_TIME_UNITS_PER_SECOND)
  51 #  define SCM_TIME_UNITS_PER_SECOND 60
  52 #endif
  53
  54 \f
  55 SCM_API long scm_c_get_internal_run_time (void);
  56 SCM_API SCM scm_get_internal_real_time (void);
  57 SCM_API SCM scm_get_internal_run_time (void);
  58 SCM_API SCM scm_current_time (void);
  59 SCM_API SCM scm_gettimeofday (void);
  60 SCM_API SCM scm_localtime (SCM time, SCM zone);
  61 SCM_API SCM scm_gmtime (SCM time);
  62 SCM_API SCM scm_mktime (SCM sbd_time, SCM zone);
  63 SCM_API SCM scm_tzset (void);
  64 SCM_API SCM scm_times (void);
  65 SCM_API SCM scm_strftime (SCM format, SCM stime);
  66 SCM_API SCM scm_strptime (SCM format, SCM string);
  67 SCM_INTERNAL void scm_init_stime (void);
  68
  69 #endif  /* SCM_STIME_H */
  70
  71 /*
  72   Local Variables:
  73   c-file-style: "gnu"
  74   End:
  75 */