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154 lines
5 KiB
C
154 lines
5 KiB
C
/* classes: h_files */
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#ifndef SCM_ROOT_H
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#define SCM_ROOT_H
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/* Copyright (C) 1996,1998,2000,2001 Free Software Foundation, Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this software; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
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* Boston, MA 02111-1307 USA
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*
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* As a special exception, the Free Software Foundation gives permission
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* for additional uses of the text contained in its release of GUILE.
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*
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* The exception is that, if you link the GUILE library with other files
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* to produce an executable, this does not by itself cause the
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* resulting executable to be covered by the GNU General Public License.
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* Your use of that executable is in no way restricted on account of
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* linking the GUILE library code into it.
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*
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* This exception does not however invalidate any other reasons why
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* the executable file might be covered by the GNU General Public License.
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*
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* This exception applies only to the code released by the
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* Free Software Foundation under the name GUILE. If you copy
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* code from other Free Software Foundation releases into a copy of
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* GUILE, as the General Public License permits, the exception does
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* not apply to the code that you add in this way. To avoid misleading
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* anyone as to the status of such modified files, you must delete
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* this exception notice from them.
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*
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* If you write modifications of your own for GUILE, it is your choice
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* whether to permit this exception to apply to your modifications.
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* If you do not wish that, delete this exception notice. */
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#include "libguile/__scm.h"
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#include "libguile/debug.h"
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#include "libguile/throw.h"
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#define scm_flo0 scm_sys_protects[0]
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#define scm_listofnull scm_sys_protects[1]
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#define scm_undefineds scm_sys_protects[2]
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#define scm_nullvect scm_sys_protects[3]
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#define scm_nullstr scm_sys_protects[4]
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#define scm_keyword_obarray scm_sys_protects[5]
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#define scm_stand_in_procs scm_sys_protects[6]
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#define scm_object_whash scm_sys_protects[7]
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#define scm_permobjs scm_sys_protects[8]
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#define scm_asyncs scm_sys_protects[9]
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#define scm_protects scm_sys_protects[10]
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#define scm_properties_whash scm_sys_protects[11]
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#define scm_gc_registered_roots scm_sys_protects[12]
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#ifdef DEBUG_EXTENSIONS
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#define scm_source_whash scm_sys_protects[13]
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#define SCM_NUM_PROTECTS 14
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#else
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#define SCM_NUM_PROTECTS 13
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#endif
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SCM_API SCM scm_sys_protects[];
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SCM_API scm_t_bits scm_tc16_root;
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#define SCM_ROOTP(obj) SCM_TYP16_PREDICATE (scm_tc16_root, obj)
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#define SCM_ROOT_STATE(root) ((scm_root_state *) SCM_CELL_WORD_1 (root))
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typedef struct scm_root_state
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{
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SCM_STACKITEM * stack_base;
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jmp_buf save_regs_gc_mark;
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int errjmp_bad;
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SCM rootcont;
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SCM dynwinds;
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#ifdef DEBUG_EXTENSIONS
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/* It is very inefficient to have this variable in the root state. */
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scm_t_debug_frame *last_debug_frame;
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#endif
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SCM progargs; /* vestigial */
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SCM exitval; /* vestigial */
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SCM cur_inp;
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SCM cur_outp;
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SCM cur_errp;
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SCM cur_loadp;
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SCM fluids;
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SCM handle; /* The root object for this root state */
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SCM parent; /* The parent root object */
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} scm_root_state;
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#define scm_stack_base (scm_root->stack_base)
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#define scm_save_regs_gc_mark (scm_root->save_regs_gc_mark)
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#define scm_errjmp_bad (scm_root->errjmp_bad)
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#define scm_rootcont (scm_root->rootcont)
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#define scm_dynwinds (scm_root->dynwinds)
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#define scm_progargs (scm_root->progargs)
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#ifdef USE_THREADS
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#define scm_last_debug_frame (scm_root->last_debug_frame)
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#endif
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#define scm_exitval (scm_root->exitval)
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#define scm_cur_inp (scm_root->cur_inp)
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#define scm_cur_outp (scm_root->cur_outp)
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#define scm_cur_errp (scm_root->cur_errp)
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#define scm_cur_loadp (scm_root->cur_loadp)
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#ifdef USE_THREADS
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#define scm_root ((scm_root_state *) SCM_THREAD_LOCAL_DATA)
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#define scm_set_root(new_root) SCM_SET_THREAD_LOCAL_DATA (new_root)
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#else /* USE_THREADS */
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SCM_API struct scm_root_state *scm_root;
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#define scm_set_root(new_root) (scm_root = (new_root))
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#endif /* USE_THREADS */
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SCM_API SCM scm_make_root (SCM parent);
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SCM_API SCM scm_internal_cwdr (scm_t_catch_body body,
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void *body_data,
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scm_t_catch_handler handler,
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void *handler_data,
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SCM_STACKITEM *stack_start);
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SCM_API SCM scm_call_with_dynamic_root (SCM thunk, SCM handler);
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SCM_API SCM scm_dynamic_root (void);
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SCM_API SCM scm_apply_with_dynamic_root (SCM proc, SCM a1, SCM args, SCM handler);
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SCM_API void scm_init_root (void);
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#endif /* SCM_ROOT_H */
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/*
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Local Variables:
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c-file-style: "gnu"
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End:
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*/
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