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 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 \f
  28
  29 typedef void (*scm_t_guard) (void *);
  30 typedef SCM (*scm_t_inner) (void *);
  31
  32 SCM_API SCM scm_dynamic_wind (SCM thunk1, SCM thunk2, SCM thunk3);
  33 SCM_API SCM scm_internal_dynamic_wind (scm_t_guard before,
  34                                        scm_t_inner inner,
  35                                        scm_t_guard after,
  36                                        void *inner_data,
  37                                        void *guard_data);
  38 SCM_API void scm_dowinds (SCM to, long delta);
  39 SCM_INTERNAL void scm_i_dowinds (SCM to, long delta,
  40                                  void (*turn_func) (void *), void *data);
  41 SCM_INTERNAL void scm_init_dynwind (void);
  42
  43 SCM_API void scm_swap_bindings (SCM vars, SCM vals);
  44
  45 typedef enum {
  46   SCM_F_DYNWIND_REWINDABLE = (1 << 0)
  47 } scm_t_dynwind_flags;
  48
  49 typedef enum {
  50   SCM_F_WIND_EXPLICITLY = (1 << 0)
  51 } scm_t_wind_flags;
  52
  53 SCM_API void scm_dynwind_begin (scm_t_dynwind_flags);
  54 SCM_API void scm_dynwind_end (void);
  55
  56 SCM_API void scm_dynwind_unwind_handler (void (*func) (void *), void *data,
  57                                          scm_t_wind_flags);
  58 SCM_API void scm_dynwind_rewind_handler (void (*func) (void *), void *data,
  59                                          scm_t_wind_flags);
  60
  61 SCM_API void scm_dynwind_unwind_handler_with_scm (void (*func) (SCM), SCM data,
  62                                                   scm_t_wind_flags);
  63 SCM_API void scm_dynwind_rewind_handler_with_scm (void (*func) (SCM), SCM data,
  64                                                   scm_t_wind_flags);
  65
  66 SCM_API void scm_dynwind_free (void *mem);
  67
  68 #ifdef GUILE_DEBUG
  69 SCM_API SCM scm_wind_chain (void);
  70 #endif /*GUILE_DEBUG*/
  71
  72 #endif  /* SCM_DYNWIND_H */
  73
  74 /*
  75   Local Variables:
  76   c-file-style: "gnu"
  77   End:
  78 */