File size: 6,563 Bytes
3dcad1f |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 |
/* Copyright 2004-2005,2008-2010,2013,2018-2019
Free Software Foundation, Inc.
This file is part of Guile.
Guile is free software: you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published
by the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Guile is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
License for more details.
You should have received a copy of the GNU Lesser General Public
License along with Guile. If not, see
<https://www.gnu.org/licenses/>. */
#if HAVE_CONFIG_H
# include <config.h>
#endif
#include <alloca.h>
#include <libguile.h>
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <string.h>
void set_flag (void *data);
void func1 (void);
void func2 (void);
void func3 (void);
void func4 (void);
void check_flag1 (const char *msg, void (*func)(void), int val);
SCM check_flag1_body (void *data);
SCM return_tag (void *data, SCM tag, SCM args);
void check_cont (int rewindable);
SCM check_cont_body (void *data);
void close_port (SCM port);
void delete_file (void *data);
void check_ports (void);
void check_fluid (void);
int flag1, flag2, flag3;
void
set_flag (void *data)
{
int *f = (int *)data;
*f = 1;
}
/* FUNC1 should leave flag1 zero.
*/
void
func1 ()
{
scm_dynwind_begin (0);
flag1 = 0;
scm_dynwind_unwind_handler (set_flag, &flag1, 0);
scm_dynwind_end ();
}
/* FUNC2 should set flag1.
*/
void
func2 ()
{
scm_dynwind_begin (0);
flag1 = 0;
scm_dynwind_unwind_handler (set_flag, &flag1, SCM_F_WIND_EXPLICITLY);
scm_dynwind_end ();
}
/* FUNC3 should set flag1.
*/
void
func3 ()
{
scm_dynwind_begin (0);
flag1 = 0;
scm_dynwind_unwind_handler (set_flag, &flag1, 0);
scm_misc_error ("func3", "gratuitous error", SCM_EOL);
scm_dynwind_end ();
}
/* FUNC4 should set flag1.
*/
void
func4 ()
{
scm_dynwind_begin (0);
flag1 = 0;
scm_dynwind_unwind_handler (set_flag, &flag1, SCM_F_WIND_EXPLICITLY);
scm_misc_error ("func4", "gratuitous error", SCM_EOL);
scm_dynwind_end ();
}
SCM
check_flag1_body (void *data)
{
void (*f)(void) = (void (*)(void))data;
f ();
return SCM_UNSPECIFIED;
}
SCM
return_tag (void *data, SCM tag, SCM args)
{
return tag;
}
void
check_flag1 (const char *tag, void (*func)(void), int val)
{
scm_internal_catch (SCM_BOOL_T,
check_flag1_body, func,
return_tag, NULL);
if (flag1 != val)
{
printf ("%s failed\n", tag);
exit (EXIT_FAILURE);
}
}
SCM
check_cont_body (void *data)
{
scm_t_dynwind_flags flags = (data? SCM_F_DYNWIND_REWINDABLE : 0);
SCM val;
scm_dynwind_begin (flags);
val = scm_c_eval_string ("(call/cc (lambda (k) k))");
scm_dynwind_end ();
return val;
}
void
check_cont (int rewindable)
{
SCM res;
res = scm_internal_catch (SCM_BOOL_T,
check_cont_body, (void *)(long)rewindable,
return_tag, NULL);
/* RES is now either the created continuation, the value passed to
the continuation, or a catch-tag, such as 'misc-error.
*/
if (scm_is_true (scm_procedure_p (res)))
{
/* a continuation, invoke it */
scm_call_1 (res, SCM_BOOL_F);
}
else if (scm_is_false (res))
{
/* the result of invoking the continuation, dynwind must be
rewindable */
if (rewindable)
return;
printf ("continuation not blocked\n");
exit (EXIT_FAILURE);
}
else
{
/* the catch tag, dynwind must not have been rewindable. */
if (!rewindable)
return;
printf ("continuation didn't work\n");
exit (EXIT_FAILURE);
}
}
void
close_port (SCM port)
{
scm_close_port (port);
}
void
delete_file (void *data)
{
unlink ((char *)data);
}
void
check_ports ()
{
#define FILENAME_TEMPLATE "/check-ports.XXXXXX"
char *filename;
const char *tmpdir = getenv ("TMPDIR");
int fd;
#ifdef __MINGW32__
extern int mkstemp (char *);
/* On Windows neither $TMPDIR nor /tmp can be relied on. */
if (tmpdir == NULL)
tmpdir = getenv ("TEMP");
if (tmpdir == NULL)
tmpdir = getenv ("TMP");
if (tmpdir == NULL)
tmpdir = "/";
#else
if (tmpdir == NULL)
tmpdir = "/tmp";
#endif
filename = alloca (strlen (tmpdir) + sizeof (FILENAME_TEMPLATE) + 1);
strcpy (filename, tmpdir);
strcat (filename, FILENAME_TEMPLATE);
/* Sanity check: Make sure that `filename' is actually writeable.
We used to use mktemp(3), but that is now considered a security risk. */
fd = mkstemp (filename);
if (fd < 0)
exit (EXIT_FAILURE);
close (fd);
scm_dynwind_begin (0);
{
SCM port = scm_open_file (scm_from_locale_string (filename),
scm_from_locale_string ("w"));
scm_dynwind_unwind_handler_with_scm (close_port, port,
SCM_F_WIND_EXPLICITLY);
scm_dynwind_current_output_port (port);
scm_write (scm_version (), SCM_UNDEFINED);
}
scm_dynwind_end ();
scm_dynwind_begin (0);
{
SCM port = scm_open_file (scm_from_locale_string (filename),
scm_from_locale_string ("r"));
SCM res;
scm_dynwind_unwind_handler_with_scm (close_port, port,
SCM_F_WIND_EXPLICITLY);
scm_dynwind_unwind_handler (delete_file, filename, SCM_F_WIND_EXPLICITLY);
scm_dynwind_current_input_port (port);
res = scm_read (SCM_UNDEFINED);
if (scm_is_false (scm_equal_p (res, scm_version ())))
{
printf ("ports didn't work\n");
exit (EXIT_FAILURE);
}
}
scm_dynwind_end ();
#undef FILENAME_TEMPLATE
}
void
check_fluid ()
{
SCM f = scm_make_fluid ();
SCM x;
scm_fluid_set_x (f, scm_from_int (12));
scm_dynwind_begin (0);
scm_dynwind_fluid (f, scm_from_int (13));
x = scm_fluid_ref (f);
scm_dynwind_end ();
if (!scm_is_eq (x, scm_from_int (13)))
{
printf ("setting fluid didn't work\n");
exit (EXIT_FAILURE);
}
if (!scm_is_eq (scm_fluid_ref (f), scm_from_int (12)))
{
printf ("resetting fluid didn't work\n");
exit (EXIT_FAILURE);
}
}
static void
inner_main (void *data, int argc, char **argv)
{
check_flag1 ("func1", func1, 0);
check_flag1 ("func2", func2, 1);
check_flag1 ("func3", func3, 1);
check_flag1 ("func4", func4, 1);
check_cont (0);
check_cont (1);
check_ports ();
check_fluid ();
exit (EXIT_SUCCESS);
}
int
main (int argc, char **argv)
{
scm_boot_guile (argc, argv, inner_main, 0);
return 0;
}
|