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0f2d19dd JB |
1 | /* classes: h_files */ |
2 | ||
3 | #ifndef STACKCHKH | |
4 | #define STACKCHKH | |
5 | /* Copyright (C) 1995,1996 Free Software Foundation, Inc. | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; either version 2, or (at your option) | |
10 | * any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this software; see the file COPYING. If not, write to | |
19 | * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. | |
20 | * | |
21 | * As a special exception, the Free Software Foundation gives permission | |
22 | * for additional uses of the text contained in its release of GUILE. | |
23 | * | |
24 | * The exception is that, if you link the GUILE library with other files | |
25 | * to produce an executable, this does not by itself cause the | |
26 | * resulting executable to be covered by the GNU General Public License. | |
27 | * Your use of that executable is in no way restricted on account of | |
28 | * linking the GUILE library code into it. | |
29 | * | |
30 | * This exception does not however invalidate any other reasons why | |
31 | * the executable file might be covered by the GNU General Public License. | |
32 | * | |
33 | * This exception applies only to the code released by the | |
34 | * Free Software Foundation under the name GUILE. If you copy | |
35 | * code from other Free Software Foundation releases into a copy of | |
36 | * GUILE, as the General Public License permits, the exception does | |
37 | * not apply to the code that you add in this way. To avoid misleading | |
38 | * anyone as to the status of such modified files, you must delete | |
39 | * this exception notice from them. | |
40 | * | |
41 | * If you write modifications of your own for GUILE, it is your choice | |
42 | * whether to permit this exception to apply to your modifications. | |
43 | * If you do not wish that, delete this exception notice. | |
44 | */ | |
45 | \f | |
b4309c3c | 46 | #include "libguile/__scm.h" |
0f2d19dd | 47 | |
dfc40e20 JB |
48 | #include "libguile/continuations.h" |
49 | #ifdef DEBUG_EXTENSIONS | |
50 | #include "libguile/debug.h" | |
51 | #endif | |
0f2d19dd JB |
52 | \f |
53 | ||
39f1ef51 MD |
54 | /* With debug extensions we have the possibility to use the debug options |
55 | * to disable stack checking. | |
56 | */ | |
57 | #ifdef DEBUG_EXTENSIONS | |
58 | #define SCM_STACK_CHECKING_P SCM_STACK_LIMIT | |
59 | #else | |
60 | /* *fixme* This option should be settable also without debug extensions. */ | |
61 | #define SCM_STACK_LIMIT 100000 | |
62 | #define SCM_STACK_CHECKING_P 1 | |
63 | #endif | |
64 | ||
65 | #ifdef STACK_CHECKING | |
0f2d19dd | 66 | # ifdef SCM_STACK_GROWS_UP |
39f1ef51 MD |
67 | # define SCM_STACK_OVERFLOW_P(s)\ |
68 | (s - SCM_BASE (scm_rootcont) > SCM_STACK_LIMIT * sizeof (SCM_STACKITEM)) | |
0f2d19dd | 69 | # else |
39f1ef51 MD |
70 | # define SCM_STACK_OVERFLOW_P(s)\ |
71 | (SCM_BASE (scm_rootcont) - s > SCM_STACK_LIMIT * sizeof (SCM_STACKITEM)) | |
0f2d19dd JB |
72 | # endif |
73 | # define SCM_CHECK_STACK\ | |
74 | {\ | |
75 | SCM_STACKITEM stack;\ | |
39f1ef51 | 76 | if (SCM_STACK_OVERFLOW_P (&stack) && scm_stack_checking_enabled_p)\ |
0f2d19dd JB |
77 | scm_report_stack_overflow ();\ |
78 | } | |
79 | #else | |
80 | # define SCM_CHECK_STACK /**/ | |
39f1ef51 | 81 | #endif /* STACK_CHECKING */ |
0f2d19dd | 82 | |
39f1ef51 | 83 | extern int scm_stack_checking_enabled_p; |
0f2d19dd JB |
84 | |
85 | \f | |
0f2d19dd | 86 | |
1cc91f1b JB |
87 | extern void scm_report_stack_overflow SCM_P ((void)); |
88 | extern long scm_stack_size SCM_P ((SCM_STACKITEM *start)); | |
89 | extern void scm_stack_report SCM_P ((void)); | |
90 | extern void scm_init_stackchk SCM_P ((void)); | |
0f2d19dd JB |
91 | |
92 | #endif /* STACKCHKH */ |