[bpt/guile.git] / libguile / root.h

/* classes: h_files */

#ifndef ROOTH
#define ROOTH

/*	Copyright (C) 1996,1998 Free Software Foundation, Inc.
 * 
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2, or (at your option)
 * any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this software; see the file COPYING.  If not, write to
 * the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
 * Boston, MA 02111-1307 USA
 *
 * As a special exception, the Free Software Foundation gives permission
 * for additional uses of the text contained in its release of GUILE.
 *
 * The exception is that, if you link the GUILE library with other files
 * to produce an executable, this does not by itself cause the
 * resulting executable to be covered by the GNU General Public License.
 * Your use of that executable is in no way restricted on account of
 * linking the GUILE library code into it.
 *
 * This exception does not however invalidate any other reasons why
 * the executable file might be covered by the GNU General Public License.
 *
 * This exception applies only to the code released by the
 * Free Software Foundation under the name GUILE.  If you copy
 * code from other Free Software Foundation releases into a copy of
 * GUILE, as the General Public License permits, the exception does
 * not apply to the code that you add in this way.  To avoid misleading
 * anyone as to the status of such modified files, you must delete
 * this exception notice from them.
 *
 * If you write modifications of your own for GUILE, it is your choice
 * whether to permit this exception to apply to your modifications.
 * If you do not wish that, delete this exception notice.  */

/* Software engineering face-lift by Greg J. Badros, 11-Dec-1999,
   gjb@cs.washington.edu, http://www.cs.washington.edu/homes/gjb */
\f

\f

#include "libguile/__scm.h"
#include "libguile/debug.h"
#include "libguile/throw.h"

\f

#define scm_flo0 scm_sys_protects[0]
#define scm_listofnull scm_sys_protects[1]
#define scm_undefineds scm_sys_protects[2]
#define scm_nullvect scm_sys_protects[3]
#define scm_nullstr scm_sys_protects[4]
#define scm_symhash scm_sys_protects[5]
#define scm_weak_symhash scm_sys_protects[6]
#define scm_symhash_vars scm_sys_protects[7]
#define scm_keyword_obarray scm_sys_protects[8]
#define scm_type_obj_list scm_sys_protects[9]
#define scm_first_type scm_sys_protects[10]
#define scm_stand_in_procs scm_sys_protects[11]
#define scm_object_whash scm_sys_protects[12]
#define scm_permobjs scm_sys_protects[13]
#define scm_asyncs scm_sys_protects[14]
#define scm_protects scm_sys_protects[15]
#ifdef DEBUG_EXTENSIONS
#define scm_source_whash scm_sys_protects[16]
#define SCM_NUM_PROTECTS 17
#else
#define SCM_NUM_PROTECTS 16
#endif

extern SCM scm_sys_protects[];

\f

extern long scm_tc16_root;

#define SCM_ROOTP(obj) (SCM_NIMP(obj) && (scm_tc16_root == SCM_TYP16 (obj)))
#define SCM_ROOT_STATE(root) ((scm_root_state *) SCM_CELL_WORD_1 (root))

typedef struct scm_root_state
{
  SCM_STACKITEM * stack_base;
  jmp_buf save_regs_gc_mark;
  int errjmp_bad;

  SCM rootcont;
  SCM dynwinds;
  SCM continuation_stack;
  SCM continuation_stack_ptr;
#ifdef DEBUG_EXTENSIONS
  /* It is very inefficient to have this variable in the root state. */
  scm_debug_frame *last_debug_frame;
#endif

  SCM progargs;			/* vestigial */
  SCM exitval;			/* vestigial */

  SCM cur_inp;
  SCM cur_outp;
  SCM cur_errp;
  SCM def_inp;
  SCM def_outp;
  SCM def_errp;
  SCM cur_loadp;

  SCM fluids;

  SCM system_transformer;
  SCM top_level_lookup_closure_var;

  SCM handle;			/* The root object for this root state */
  SCM parent;			/* The parent root object */
} scm_root_state;

#define scm_stack_base			(scm_root->stack_base)
#define scm_save_regs_gc_mark		(scm_root->save_regs_gc_mark)
#define scm_errjmp_bad			(scm_root->errjmp_bad)

#define scm_rootcont			(scm_root->rootcont)
#define scm_dynwinds			(scm_root->dynwinds)
#define scm_continuation_stack		(scm_root->continuation_stack)
#define scm_continuation_stack_ptr	(scm_root->continuation_stack_ptr)
#define scm_progargs			(scm_root->progargs)
#ifdef USE_THREADS
#define scm_last_debug_frame		(scm_root->last_debug_frame)
#endif
#define scm_exitval 			(scm_root->exitval)
#define scm_cur_inp			(scm_root->cur_inp)
#define scm_cur_outp			(scm_root->cur_outp)
#define scm_cur_errp			(scm_root->cur_errp)
#define scm_def_inp			(scm_root->def_inp)
#define scm_def_outp			(scm_root->def_outp)
#define scm_def_errp			(scm_root->def_errp)
#define scm_cur_loadp			(scm_root->cur_loadp)
#define scm_top_level_lookup_closure_var \
                                       (scm_root->top_level_lookup_closure_var)
#define scm_system_transformer		(scm_root->system_transformer)
     
#ifdef USE_THREADS
#define scm_root ((scm_root_state *) SCM_THREAD_LOCAL_DATA)
#define scm_set_root(new_root) SCM_SET_THREAD_LOCAL_DATA (new_root)
#else /* USE_THREADS */
extern struct scm_root_state *scm_root;
#define scm_set_root(new_root) (scm_root = (new_root))
#endif /* USE_THREADS */

\f

extern SCM scm_make_root (SCM parent);
extern SCM scm_internal_cwdr (scm_catch_body_t body,
                              void *body_data,
                              scm_catch_handler_t handler,
                              void *handler_data,
                              SCM_STACKITEM *stack_start);
extern SCM scm_call_with_dynamic_root (SCM thunk, SCM handler);
extern SCM scm_dynamic_root (void);
extern SCM scm_apply_with_dynamic_root (SCM proc, SCM a1, SCM args, SCM handler);
extern SCM scm_call_catching_errors (SCM (*thunk)(), SCM (*err_filter)(), void * closure);
extern void scm_init_root (void);

#endif  /* ROOTH */

/*
  Local Variables:
  c-file-style: "gnu"
  End:
*/
Commit	Line	Data
0f2d19dd JB	1	/* classes: h_files */
	2
	3	#ifndef ROOTH
	4	#define ROOTH
	5
7dc6e754	6	/* Copyright (C) 1996,1998 Free Software Foundation, Inc.
0f2d19dd JB	7	*
	8	* This program is free software; you can redistribute it and/or modify
	9	* it under the terms of the GNU General Public License as published by
	10	* the Free Software Foundation; either version 2, or (at your option)
	11	* any later version.
	12	*
	13	* This program 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
	16	* GNU General Public License for more details.
	17	*
	18	* You should have received a copy of the GNU General Public License
	19	* along with this software; see the file COPYING. If not, write to
82892bed JB	20	* the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
82892bed JB	21	* Boston, MA 02111-1307 USA
0f2d19dd JB	22	*
	23	* As a special exception, the Free Software Foundation gives permission
	24	* for additional uses of the text contained in its release of GUILE.
	25	*
	26	* The exception is that, if you link the GUILE library with other files
	27	* to produce an executable, this does not by itself cause the
	28	* resulting executable to be covered by the GNU General Public License.
	29	* Your use of that executable is in no way restricted on account of
	30	* linking the GUILE library code into it.
	31	*
	32	* This exception does not however invalidate any other reasons why
	33	* the executable file might be covered by the GNU General Public License.
	34	*
	35	* This exception applies only to the code released by the
	36	* Free Software Foundation under the name GUILE. If you copy
	37	* code from other Free Software Foundation releases into a copy of
	38	* GUILE, as the General Public License permits, the exception does
	39	* not apply to the code that you add in this way. To avoid misleading
	40	* anyone as to the status of such modified files, you must delete
	41	* this exception notice from them.
	42	*
	43	* If you write modifications of your own for GUILE, it is your choice
	44	* whether to permit this exception to apply to your modifications.
82892bed	45	* If you do not wish that, delete this exception notice. */
d3a6bc94 GB	46
	47	/* Software engineering face-lift by Greg J. Badros, 11-Dec-1999,
	48	gjb@cs.washington.edu, http://www.cs.washington.edu/homes/gjb */
0f2d19dd JB	49	\f
	50
	51	\f
	52
b4309c3c	53	#include "libguile/__scm.h"
033c7f3d	54	#include "libguile/debug.h"
e71575d9	55	#include "libguile/throw.h"
0f2d19dd JB	56
	57	\f
	58
	59	#define scm_flo0 scm_sys_protects[0]
	60	#define scm_listofnull scm_sys_protects[1]
	61	#define scm_undefineds scm_sys_protects[2]
	62	#define scm_nullvect scm_sys_protects[3]
	63	#define scm_nullstr scm_sys_protects[4]
	64	#define scm_symhash scm_sys_protects[5]
	65	#define scm_weak_symhash scm_sys_protects[6]
	66	#define scm_symhash_vars scm_sys_protects[7]
0e76bf66	67	#define scm_keyword_obarray scm_sys_protects[8]
0f2d19dd JB	68	#define scm_type_obj_list scm_sys_protects[9]
	69	#define scm_first_type scm_sys_protects[10]
	70	#define scm_stand_in_procs scm_sys_protects[11]
	71	#define scm_object_whash scm_sys_protects[12]
	72	#define scm_permobjs scm_sys_protects[13]
	73	#define scm_asyncs scm_sys_protects[14]
ef290276	74	#define scm_protects scm_sys_protects[15]
615aec77	75	#ifdef DEBUG_EXTENSIONS
ef290276 JB	76	#define scm_source_whash scm_sys_protects[16]
ef290276 JB	77	#define SCM_NUM_PROTECTS 17
615aec77	78	#else
ef290276	79	#define SCM_NUM_PROTECTS 16
615aec77	80	#endif
0f2d19dd JB	81
	82	extern SCM scm_sys_protects[];
	83
	84	\f
	85
010afa35 MD	86	extern long scm_tc16_root;
010afa35 MD	87
d3a6bc94	88	#define SCM_ROOTP(obj) (SCM_NIMP(obj) && (scm_tc16_root == SCM_TYP16 (obj)))
54778cd3	89	#define SCM_ROOT_STATE(root) ((scm_root_state *) SCM_CELL_WORD_1 (root))
010afa35 MD	90
010afa35 MD	91	typedef struct scm_root_state
0f2d19dd JB	92	{
	93	SCM_STACKITEM * stack_base;
	94	jmp_buf save_regs_gc_mark;
	95	int errjmp_bad;
	96
	97	SCM rootcont;
	98	SCM dynwinds;
	99	SCM continuation_stack;
	100	SCM continuation_stack_ptr;
033c7f3d MD	101	#ifdef DEBUG_EXTENSIONS
	102	/* It is very inefficient to have this variable in the root state. */
	103	scm_debug_frame *last_debug_frame;
	104	#endif
7b4e5a7a	105
0f2d19dd JB	106	SCM progargs; /* vestigial */
	107	SCM exitval; /* vestigial */
	108
	109	SCM cur_inp;
	110	SCM cur_outp;
	111	SCM cur_errp;
	112	SCM def_inp;
	113	SCM def_outp;
	114	SCM def_errp;
903073d5	115	SCM cur_loadp;
0f2d19dd	116
7b4e5a7a MV	117	SCM fluids;
7b4e5a7a MV	118
0f2d19dd	119	SCM system_transformer;
dc19d1d2	120	SCM top_level_lookup_closure_var;
010afa35 MD	121
	122	SCM handle; /* The root object for this root state */
	123	SCM parent; /* The parent root object */
	124	} scm_root_state;
0f2d19dd JB	125
	126	#define scm_stack_base (scm_root->stack_base)
	127	#define scm_save_regs_gc_mark (scm_root->save_regs_gc_mark)
	128	#define scm_errjmp_bad (scm_root->errjmp_bad)
	129
	130	#define scm_rootcont (scm_root->rootcont)
	131	#define scm_dynwinds (scm_root->dynwinds)
	132	#define scm_continuation_stack (scm_root->continuation_stack)
	133	#define scm_continuation_stack_ptr (scm_root->continuation_stack_ptr)
	134	#define scm_progargs (scm_root->progargs)
033c7f3d MD	135	#ifdef USE_THREADS
	136	#define scm_last_debug_frame (scm_root->last_debug_frame)
	137	#endif
0f2d19dd JB	138	#define scm_exitval (scm_root->exitval)
	139	#define scm_cur_inp (scm_root->cur_inp)
	140	#define scm_cur_outp (scm_root->cur_outp)
	141	#define scm_cur_errp (scm_root->cur_errp)
	142	#define scm_def_inp (scm_root->def_inp)
	143	#define scm_def_outp (scm_root->def_outp)
	144	#define scm_def_errp (scm_root->def_errp)
903073d5	145	#define scm_cur_loadp (scm_root->cur_loadp)
dc19d1d2 JB	146	#define scm_top_level_lookup_closure_var \
dc19d1d2 JB	147	(scm_root->top_level_lookup_closure_var)
0f2d19dd	148	#define scm_system_transformer (scm_root->system_transformer)
5aab5d96	149
010afa35	150	#ifdef USE_THREADS
f15347a0 MD	151	#define scm_root ((scm_root_state *) SCM_THREAD_LOCAL_DATA)
f15347a0 MD	152	#define scm_set_root(new_root) SCM_SET_THREAD_LOCAL_DATA (new_root)
010afa35	153	#else /* USE_THREADS */
010afa35 MD	154	extern struct scm_root_state *scm_root;
010afa35 MD	155	#define scm_set_root(new_root) (scm_root = (new_root))
010afa35	156	#endif /* USE_THREADS */
0f2d19dd	157
010afa35	158	\f
0f2d19dd	159
7866a09b GB	160	extern SCM scm_make_root (SCM parent);
	161	extern SCM scm_internal_cwdr (scm_catch_body_t body,
	162	void *body_data,
	163	scm_catch_handler_t handler,
	164	void *handler_data,
	165	SCM_STACKITEM *stack_start);
	166	extern SCM scm_call_with_dynamic_root (SCM thunk, SCM handler);
	167	extern SCM scm_dynamic_root (void);
	168	extern SCM scm_apply_with_dynamic_root (SCM proc, SCM a1, SCM args, SCM handler);
	169	extern SCM scm_call_catching_errors (SCM (thunk)(), SCM (err_filter)(), void * closure);
	170	extern void scm_init_root (void);
0f2d19dd JB	171
0f2d19dd JB	172	#endif /* ROOTH */
89e00824 ML	173
	174	/*
	175	Local Variables:
	176	c-file-style: "gnu"
	177	End:
	178	*/