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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, |
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] |
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; |
87 | ||
d3a6bc94 | 88 | #define SCM_ROOTP(obj) (SCM_NIMP(obj) && (scm_tc16_root == SCM_TYP16 (obj))) |
010afa35 MD |
89 | #define SCM_ROOT_STATE(root) ((scm_root_state *) SCM_CDR (root)) |
90 | ||
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 | |
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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; |
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 \ |
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) |
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; |
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 | |
172 | #endif /* ROOTH */ |