libguile/dynwind.h

   1 /* classes: h_files */
   2
   3 #ifndef SCM_DYNWIND_H
   4 #define SCM_DYNWIND_H
   5
   6 /* Copyright (C) 1995,1996,1998,1999,2000,2003,2004, 2006, 2008, 2011 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 License
  10  * as published by the Free Software Foundation; either version 3 of
  11  * the License, or (at your option) any later version.
  12  *
  13  * This library is distributed in the hope that it will be useful, but
  14  * 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
  21  * 02110-1301 USA
  22  */
  23
  24 \f
  25
  26 #include "libguile/__scm.h"
  27
  28 \f
  29
  30 typedef void (*scm_t_guard) (void *);
  31
  32 SCM_API SCM scm_dynamic_wind (SCM thunk1, SCM thunk2, SCM thunk3);
  33 SCM_API void scm_dowinds (SCM to, long delta);
  34 SCM_INTERNAL void scm_i_dowinds (SCM to, long delta,
  35                                  void (*turn_func) (void *), void *data);
  36 SCM_INTERNAL void scm_init_dynwind (void);
  37
  38 SCM_API void scm_swap_bindings (SCM vars, SCM vals);
  39
  40 typedef enum {
  41   SCM_F_DYNWIND_REWINDABLE = (1 << 0)
  42 } scm_t_dynwind_flags;
  43
  44 typedef enum {
  45   SCM_F_WIND_EXPLICITLY = (1 << 0)
  46 } scm_t_wind_flags;
  47
  48 SCM_API void scm_dynwind_begin (scm_t_dynwind_flags);
  49 SCM_API void scm_dynwind_end (void);
  50
  51 SCM_API void scm_dynwind_unwind_handler (void (*func) (void *), void *data,
  52                                          scm_t_wind_flags);
  53 SCM_API void scm_dynwind_rewind_handler (void (*func) (void *), void *data,
  54                                          scm_t_wind_flags);
  55
  56 SCM_API void scm_dynwind_unwind_handler_with_scm (void (*func) (SCM), SCM data,
  57                                                   scm_t_wind_flags);
  58 SCM_API void scm_dynwind_rewind_handler_with_scm (void (*func) (SCM), SCM data,
  59                                                   scm_t_wind_flags);
  60
  61 SCM_API void scm_dynwind_free (void *mem);
  62
  63 #ifdef GUILE_DEBUG
  64 SCM_API SCM scm_wind_chain (void);
  65 #endif /*GUILE_DEBUG*/
  66
  67 #endif  /* SCM_DYNWIND_H */
  68
  69 /*
  70   Local Variables:
  71   c-file-style: "gnu"
  72   End:
  73 */