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0f2d19dd JB |
1 | /* classes: h_files */ |
2 | ||
3 | #ifndef ROOTH | |
4 | #define ROOTH | |
5 | ||
6 | /* Copyright (C) 1996 Free Software Foundation, Inc. | |
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 | |
20 | * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. | |
21 | * | |
22 | * As a special exception, the Free Software Foundation gives permission | |
23 | * for additional uses of the text contained in its release of GUILE. | |
24 | * | |
25 | * The exception is that, if you link the GUILE library with other files | |
26 | * to produce an executable, this does not by itself cause the | |
27 | * resulting executable to be covered by the GNU General Public License. | |
28 | * Your use of that executable is in no way restricted on account of | |
29 | * linking the GUILE library code into it. | |
30 | * | |
31 | * This exception does not however invalidate any other reasons why | |
32 | * the executable file might be covered by the GNU General Public License. | |
33 | * | |
34 | * This exception applies only to the code released by the | |
35 | * Free Software Foundation under the name GUILE. If you copy | |
36 | * code from other Free Software Foundation releases into a copy of | |
37 | * GUILE, as the General Public License permits, the exception does | |
38 | * not apply to the code that you add in this way. To avoid misleading | |
39 | * anyone as to the status of such modified files, you must delete | |
40 | * this exception notice from them. | |
41 | * | |
42 | * If you write modifications of your own for GUILE, it is your choice | |
43 | * whether to permit this exception to apply to your modifications. | |
44 | * If you do not wish that, delete this exception notice. | |
45 | */ | |
46 | \f | |
47 | ||
48 | \f | |
49 | ||
b4309c3c | 50 | #include "libguile/__scm.h" |
033c7f3d | 51 | #include "libguile/debug.h" |
0f2d19dd JB |
52 | |
53 | \f | |
54 | ||
55 | #define scm_flo0 scm_sys_protects[0] | |
56 | #define scm_listofnull scm_sys_protects[1] | |
57 | #define scm_undefineds scm_sys_protects[2] | |
58 | #define scm_nullvect scm_sys_protects[3] | |
59 | #define scm_nullstr scm_sys_protects[4] | |
60 | #define scm_symhash scm_sys_protects[5] | |
61 | #define scm_weak_symhash scm_sys_protects[6] | |
62 | #define scm_symhash_vars scm_sys_protects[7] | |
63 | #define scm_kw_obarray scm_sys_protects[8] | |
64 | #define scm_type_obj_list scm_sys_protects[9] | |
65 | #define scm_first_type scm_sys_protects[10] | |
66 | #define scm_stand_in_procs scm_sys_protects[11] | |
67 | #define scm_object_whash scm_sys_protects[12] | |
68 | #define scm_permobjs scm_sys_protects[13] | |
69 | #define scm_asyncs scm_sys_protects[14] | |
615aec77 MD |
70 | #ifdef DEBUG_EXTENSIONS |
71 | #define scm_source_whash scm_sys_protects[15] | |
72 | #define SCM_NUM_PROTECTS 16 | |
73 | #else | |
0f2d19dd | 74 | #define SCM_NUM_PROTECTS 15 |
615aec77 | 75 | #endif |
0f2d19dd JB |
76 | |
77 | extern SCM scm_sys_protects[]; | |
78 | ||
79 | \f | |
80 | ||
010afa35 MD |
81 | extern long scm_tc16_root; |
82 | ||
83 | #define SCM_ROOTP(obj) (scm_tc16_root == SCM_TYP16 (obj)) | |
84 | #define SCM_ROOT_STATE(root) ((scm_root_state *) SCM_CDR (root)) | |
85 | ||
86 | typedef struct scm_root_state | |
0f2d19dd JB |
87 | { |
88 | SCM_STACKITEM * stack_base; | |
89 | jmp_buf save_regs_gc_mark; | |
90 | int errjmp_bad; | |
91 | ||
92 | SCM rootcont; | |
93 | SCM dynwinds; | |
94 | SCM continuation_stack; | |
95 | SCM continuation_stack_ptr; | |
033c7f3d MD |
96 | #ifdef DEBUG_EXTENSIONS |
97 | /* It is very inefficient to have this variable in the root state. */ | |
98 | scm_debug_frame *last_debug_frame; | |
99 | #endif | |
100 | ||
0f2d19dd JB |
101 | SCM progargs; /* vestigial */ |
102 | SCM exitval; /* vestigial */ | |
103 | ||
104 | SCM cur_inp; | |
105 | SCM cur_outp; | |
106 | SCM cur_errp; | |
107 | SCM def_inp; | |
108 | SCM def_outp; | |
109 | SCM def_errp; | |
110 | ||
111 | SCM system_transformer; | |
dc19d1d2 | 112 | SCM top_level_lookup_closure_var; |
010afa35 MD |
113 | |
114 | SCM handle; /* The root object for this root state */ | |
115 | SCM parent; /* The parent root object */ | |
116 | } scm_root_state; | |
0f2d19dd JB |
117 | |
118 | #define scm_stack_base (scm_root->stack_base) | |
119 | #define scm_save_regs_gc_mark (scm_root->save_regs_gc_mark) | |
120 | #define scm_errjmp_bad (scm_root->errjmp_bad) | |
121 | ||
122 | #define scm_rootcont (scm_root->rootcont) | |
123 | #define scm_dynwinds (scm_root->dynwinds) | |
124 | #define scm_continuation_stack (scm_root->continuation_stack) | |
125 | #define scm_continuation_stack_ptr (scm_root->continuation_stack_ptr) | |
126 | #define scm_progargs (scm_root->progargs) | |
033c7f3d MD |
127 | #ifdef USE_THREADS |
128 | #define scm_last_debug_frame (scm_root->last_debug_frame) | |
129 | #endif | |
0f2d19dd JB |
130 | #define scm_exitval (scm_root->exitval) |
131 | #define scm_cur_inp (scm_root->cur_inp) | |
132 | #define scm_cur_outp (scm_root->cur_outp) | |
133 | #define scm_cur_errp (scm_root->cur_errp) | |
134 | #define scm_def_inp (scm_root->def_inp) | |
135 | #define scm_def_outp (scm_root->def_outp) | |
136 | #define scm_def_errp (scm_root->def_errp) | |
dc19d1d2 JB |
137 | #define scm_top_level_lookup_closure_var \ |
138 | (scm_root->top_level_lookup_closure_var) | |
0f2d19dd JB |
139 | #define scm_system_transformer (scm_root->system_transformer) |
140 | ||
010afa35 | 141 | #ifdef USE_THREADS |
f15347a0 MD |
142 | #define scm_root ((scm_root_state *) SCM_THREAD_LOCAL_DATA) |
143 | #define scm_set_root(new_root) SCM_SET_THREAD_LOCAL_DATA (new_root) | |
010afa35 | 144 | #else /* USE_THREADS */ |
010afa35 MD |
145 | extern struct scm_root_state *scm_root; |
146 | #define scm_set_root(new_root) (scm_root = (new_root)) | |
010afa35 | 147 | #endif /* USE_THREADS */ |
0f2d19dd | 148 | |
010afa35 | 149 | \f |
0f2d19dd | 150 | |
010afa35 | 151 | extern SCM scm_make_root SCM_P ((SCM parent)); |
033c7f3d MD |
152 | extern SCM scm_call_with_dynamic_root SCM_P ((SCM thunk, SCM handler)); |
153 | extern SCM scm_apply_with_dynamic_root SCM_P ((SCM proc, SCM a1, SCM args, SCM handler)); | |
010afa35 MD |
154 | extern SCM scm_call_catching_errors SCM_P ((SCM (*thunk)(), SCM (*err_filter)(), void * closure)); |
155 | extern void scm_init_root SCM_P ((void)); | |
0f2d19dd JB |
156 | |
157 | #endif /* ROOTH */ |