6 /* Copyright (C) 1996 Free Software Foundation, Inc.
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)
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.
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.
22 * As a special exception, the Free Software Foundation gives permission
23 * for additional uses of the text contained in its release of GUILE.
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.
31 * This exception does not however invalidate any other reasons why
32 * the executable file might be covered by the GNU General Public License.
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.
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.
50 #include "libguile/__scm.h"
54 #define scm_flo0 scm_sys_protects[0]
55 #define scm_listofnull scm_sys_protects[1]
56 #define scm_undefineds scm_sys_protects[2]
57 #define scm_nullvect scm_sys_protects[3]
58 #define scm_nullstr scm_sys_protects[4]
59 #define scm_symhash scm_sys_protects[5]
60 #define scm_weak_symhash scm_sys_protects[6]
61 #define scm_symhash_vars scm_sys_protects[7]
62 #define scm_kw_obarray scm_sys_protects[8]
63 #define scm_type_obj_list scm_sys_protects[9]
64 #define scm_first_type scm_sys_protects[10]
65 #define scm_stand_in_procs scm_sys_protects[11]
66 #define scm_object_whash scm_sys_protects[12]
67 #define scm_permobjs scm_sys_protects[13]
68 #define scm_asyncs scm_sys_protects[14]
69 #ifdef DEBUG_EXTENSIONS
70 #define scm_source_whash scm_sys_protects[15]
71 #define SCM_NUM_PROTECTS 16
73 #define SCM_NUM_PROTECTS 15
76 extern SCM scm_sys_protects
[];
80 extern long scm_tc16_root
;
82 #define SCM_ROOTP(obj) (scm_tc16_root == SCM_TYP16 (obj))
83 #define SCM_ROOT_STATE(root) ((scm_root_state *) SCM_CDR (root))
85 typedef struct scm_root_state
87 SCM_STACKITEM
* stack_base
;
88 jmp_buf save_regs_gc_mark
;
93 SCM continuation_stack
;
94 SCM continuation_stack_ptr
;
96 SCM progargs
; /* vestigial */
97 SCM exitval
; /* vestigial */
106 SCM system_transformer
;
107 SCM top_level_lookup_thunk_var
;
109 SCM handle
; /* The root object for this root state */
110 SCM parent
; /* The parent root object */
113 #define scm_stack_base (scm_root->stack_base)
114 #define scm_save_regs_gc_mark (scm_root->save_regs_gc_mark)
115 #define scm_errjmp_bad (scm_root->errjmp_bad)
117 #define scm_rootcont (scm_root->rootcont)
118 #define scm_dynwinds (scm_root->dynwinds)
119 #define scm_continuation_stack (scm_root->continuation_stack)
120 #define scm_continuation_stack_ptr (scm_root->continuation_stack_ptr)
121 #define scm_progargs (scm_root->progargs)
122 #define scm_exitval (scm_root->exitval)
123 #define scm_cur_inp (scm_root->cur_inp)
124 #define scm_cur_outp (scm_root->cur_outp)
125 #define scm_cur_errp (scm_root->cur_errp)
126 #define scm_def_inp (scm_root->def_inp)
127 #define scm_def_outp (scm_root->def_outp)
128 #define scm_def_errp (scm_root->def_errp)
129 #define scm_top_level_lookup_thunk_var (scm_root->top_level_lookup_thunk_var)
130 #define scm_system_transformer (scm_root->system_transformer)
134 #ifdef USE_MIT_PTHREADS
135 #define scm_root ((scm_root_state *) pthread_self()->attr.arg_attr)
136 #define scm_set_root(new_root) (pthread_self()->attr.arg_attr = (new_root))
139 #ifdef USE_COOP_THREADS
140 #define scm_root ((scm_root_state *) coop_global_curr->data)
141 #define scm_set_root(new_root) (coop_global_curr->data = (new_root))
144 #ifdef USE_FSU_PTHREADS
145 #define scm_root ((scm_root_state *) pthread_self()->prots)
146 #define scm_set_root(new_root) (pthread_self()->prots = (new_root))
149 #else /* USE_THREADS */
151 extern struct scm_root_state
*scm_root
;
152 #define scm_set_root(new_root) (scm_root = (new_root))
154 #endif /* USE_THREADS */
158 extern SCM scm_make_root
SCM_P ((SCM parent
));
159 extern SCM scm_call_with_new_root
SCM_P ((SCM thunk
, SCM handler
));
160 extern SCM scm_call_catching_errors
SCM_P ((SCM (*thunk
)(), SCM (*err_filter
)(), void * closure
));
161 extern void scm_init_root
SCM_P ((void));