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1 | /* classes: h_files */ |
2 | ||
0527e687 DH |
3 | #ifndef SCM_STACKCHK_H |
4 | #define SCM_STACKCHK_H | |
5 | ||
6 | /* Copyright (C) 1995,1996,1998,2000 Free Software Foundation, Inc. | |
7 | * | |
0f2d19dd JB |
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. | |
0527e687 | 12 | * |
0f2d19dd JB |
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. | |
0527e687 | 17 | * |
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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 | |
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20 | * the Free Software Foundation, Inc., 59 Temple Place, Suite 330, |
21 | * Boston, MA 02111-1307 USA | |
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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. */ |
0527e687 | 46 | |
0f2d19dd | 47 | \f |
0527e687 | 48 | |
b4309c3c | 49 | #include "libguile/__scm.h" |
0f2d19dd | 50 | |
dfc40e20 JB |
51 | #include "libguile/continuations.h" |
52 | #ifdef DEBUG_EXTENSIONS | |
53 | #include "libguile/debug.h" | |
54 | #endif | |
0f2d19dd JB |
55 | \f |
56 | ||
39f1ef51 MD |
57 | /* With debug extensions we have the possibility to use the debug options |
58 | * to disable stack checking. | |
59 | */ | |
60 | #ifdef DEBUG_EXTENSIONS | |
61 | #define SCM_STACK_CHECKING_P SCM_STACK_LIMIT | |
62 | #else | |
63 | /* *fixme* This option should be settable also without debug extensions. */ | |
64 | #define SCM_STACK_LIMIT 100000 | |
65 | #define SCM_STACK_CHECKING_P 1 | |
66 | #endif | |
67 | ||
68 | #ifdef STACK_CHECKING | |
0f2d19dd | 69 | # ifdef SCM_STACK_GROWS_UP |
39f1ef51 | 70 | # define SCM_STACK_OVERFLOW_P(s)\ |
574f95b6 | 71 | (s > ((SCM_STACKITEM *) SCM_BASE (scm_rootcont) + SCM_STACK_LIMIT)) |
0f2d19dd | 72 | # else |
39f1ef51 | 73 | # define SCM_STACK_OVERFLOW_P(s)\ |
574f95b6 | 74 | (s < ((SCM_STACKITEM *) SCM_BASE (scm_rootcont) - SCM_STACK_LIMIT)) |
0f2d19dd JB |
75 | # endif |
76 | # define SCM_CHECK_STACK\ | |
77 | {\ | |
78 | SCM_STACKITEM stack;\ | |
39f1ef51 | 79 | if (SCM_STACK_OVERFLOW_P (&stack) && scm_stack_checking_enabled_p)\ |
0f2d19dd JB |
80 | scm_report_stack_overflow ();\ |
81 | } | |
82 | #else | |
83 | # define SCM_CHECK_STACK /**/ | |
39f1ef51 | 84 | #endif /* STACK_CHECKING */ |
0f2d19dd | 85 | |
33b001fd | 86 | SCM_API int scm_stack_checking_enabled_p; |
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87 | |
88 | \f | |
0f2d19dd | 89 | |
33b001fd MV |
90 | SCM_API void scm_report_stack_overflow (void); |
91 | SCM_API long scm_stack_size (SCM_STACKITEM *start); | |
92 | SCM_API void scm_stack_report (void); | |
93 | SCM_API void scm_init_stackchk (void); | |
0f2d19dd | 94 | |
0527e687 | 95 | #endif /* SCM_STACKCHK_H */ |
89e00824 ML |
96 | |
97 | /* | |
98 | Local Variables: | |
99 | c-file-style: "gnu" | |
100 | End: | |
101 | */ |