Commit | Line | Data |
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b9b9a028 | 1 | /* Copyright (C) 1995,1996,1997, 2000, 2001, 2006, 2008, 2010, 2011 Free Software Foundation, Inc. |
0f2d19dd | 2 | * |
73be1d9e | 3 | * This library is free software; you can redistribute it and/or |
53befeb7 NJ |
4 | * modify it under the terms of the GNU Lesser General Public License |
5 | * as published by the Free Software Foundation; either version 3 of | |
6 | * the License, or (at your option) any later version. | |
0f2d19dd | 7 | * |
53befeb7 NJ |
8 | * This library is distributed in the hope that it will be useful, but |
9 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
73be1d9e MV |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
11 | * Lesser General Public License for more details. | |
0f2d19dd | 12 | * |
73be1d9e MV |
13 | * You should have received a copy of the GNU Lesser General Public |
14 | * License along with this library; if not, write to the Free Software | |
53befeb7 NJ |
15 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
16 | * 02110-1301 USA | |
73be1d9e | 17 | */ |
6e8d25a6 | 18 | |
6e8d25a6 | 19 | |
0f2d19dd | 20 | \f |
dbb605f5 LC |
21 | #ifdef HAVE_CONFIG_H |
22 | # include <config.h> | |
23 | #endif | |
0f2d19dd | 24 | |
a0599745 MD |
25 | #include "libguile/_scm.h" |
26 | #include "libguile/ports.h" | |
27 | #include "libguile/root.h" | |
d8b6e191 | 28 | #include "libguile/threads.h" |
138bf22d | 29 | #include "libguile/dynwind.h" |
0f2d19dd | 30 | |
a0599745 | 31 | #include "libguile/stackchk.h" |
0f2d19dd JB |
32 | \f |
33 | ||
34 | /* {Stack Checking} | |
35 | */ | |
36 | ||
39f1ef51 | 37 | int scm_stack_checking_enabled_p; |
0f2d19dd | 38 | |
523f5266 GH |
39 | SCM_SYMBOL (scm_stack_overflow_key, "stack-overflow"); |
40 | ||
138bf22d AW |
41 | static void |
42 | reset_scm_stack_checking_enabled_p (void *arg) | |
43 | { | |
44 | scm_stack_checking_enabled_p = (int)(scm_t_bits)arg; | |
45 | } | |
46 | ||
0f2d19dd JB |
47 | void |
48 | scm_report_stack_overflow () | |
49 | { | |
138bf22d AW |
50 | scm_dynwind_begin (0); /* non-rewindable frame */ |
51 | scm_dynwind_unwind_handler (reset_scm_stack_checking_enabled_p, | |
52 | (void*)(scm_t_bits)scm_stack_checking_enabled_p, | |
53 | SCM_F_WIND_EXPLICITLY); | |
54 | ||
39f1ef51 | 55 | scm_stack_checking_enabled_p = 0; |
138bf22d | 56 | |
01f61221 | 57 | scm_error (scm_stack_overflow_key, |
f5bf2977 GH |
58 | NULL, |
59 | "Stack overflow", | |
60 | SCM_BOOL_F, | |
61 | SCM_BOOL_F); | |
138bf22d AW |
62 | |
63 | /* not reached */ | |
64 | scm_dynwind_end (); | |
0f2d19dd JB |
65 | } |
66 | ||
1be6b49c | 67 | long |
6e8d25a6 | 68 | scm_stack_size (SCM_STACKITEM *start) |
0f2d19dd JB |
69 | { |
70 | SCM_STACKITEM stack; | |
8dda3eea | 71 | #if SCM_STACK_GROWS_UP |
0f2d19dd JB |
72 | return &stack - start; |
73 | #else | |
74 | return start - &stack; | |
8dda3eea | 75 | #endif /* SCM_STACK_GROWS_UP */ |
0f2d19dd JB |
76 | } |
77 | ||
1cc91f1b | 78 | |
0f2d19dd JB |
79 | void |
80 | scm_stack_report () | |
0f2d19dd | 81 | { |
9de87eea | 82 | SCM port = scm_current_error_port (); |
0f2d19dd | 83 | SCM_STACKITEM stack; |
9de87eea MV |
84 | scm_i_thread *thread = SCM_I_CURRENT_THREAD; |
85 | ||
86 | scm_uintprint ((scm_stack_size (thread->continuation_base) | |
87 | * sizeof (SCM_STACKITEM)), | |
88 | 16, port); | |
89 | scm_puts (" of stack: 0x", port); | |
90 | scm_uintprint ((scm_t_bits) thread->continuation_base, 16, port); | |
91 | scm_puts (" - 0x", port); | |
92 | scm_uintprint ((scm_t_bits) &stack, 16, port); | |
93 | scm_puts ("\n", port); | |
0f2d19dd JB |
94 | } |
95 | ||
d8b6e191 NJ |
96 | |
97 | SCM_DEFINE (scm_sys_get_stack_size, "%get-stack-size", 0, 0, 0, | |
98 | (), | |
99 | "Return the current thread's C stack size (in Scheme objects).") | |
100 | #define FUNC_NAME s_scm_sys_get_stack_size | |
101 | { | |
102 | return scm_from_long (scm_stack_size (SCM_I_CURRENT_THREAD->base)); | |
103 | } | |
104 | #undef FUNC_NAME | |
105 | ||
106 | ||
0f2d19dd JB |
107 | void |
108 | scm_init_stackchk () | |
0f2d19dd | 109 | { |
a0599745 | 110 | #include "libguile/stackchk.x" |
0f2d19dd | 111 | } |
89e00824 ML |
112 | |
113 | /* | |
114 | Local Variables: | |
115 | c-file-style: "gnu" | |
116 | End: | |
117 | */ |