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/* test-foreign-object-c.c - exercise C foreign object interface */
/* Copyright 2014,2018
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/>. */
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <libguile.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
enum
{
CSTR_SLOT_ADDR,
CSTR_SLOT_LEN,
CSTR_SLOT_COUNT
};
static void
finalizer (SCM obj)
{
free (scm_foreign_object_ref (obj, CSTR_SLOT_ADDR));
}
static SCM
make_cstr_from_static (SCM type, const char *str)
{
char *ours = strdup (str);
if (!ours)
abort ();
return scm_make_foreign_object_2 (type, ours, (void *) strlen (ours));
}
static int
cstr_equals_static_p (SCM cstr, const char *str)
{
const char *addr;
size_t len;
addr = scm_foreign_object_ref (cstr, CSTR_SLOT_ADDR);
len = scm_foreign_object_unsigned_ref (cstr, CSTR_SLOT_LEN);
if (strlen (str) != len)
return 0;
return strncmp (addr, str, len) == 0;
}
static void
test_scm_foreign_object (void)
{
SCM type_name, slot_names, type, cstr;
type_name = scm_from_utf8_symbol ("<cstr>");
slot_names = scm_list_2 (scm_from_utf8_symbol ("addr"),
scm_from_utf8_symbol ("len"));
type = scm_make_foreign_object_type (type_name, slot_names, finalizer);
cstr = make_cstr_from_static (type, "Hello, world!");
scm_assert_foreign_object_type (type, cstr);
if (!cstr_equals_static_p (cstr, "Hello, world!"))
{
fprintf (stderr, "fail: test-foreign-object 1\n");
exit (EXIT_FAILURE);
}
{
int i;
for (i = 0; i < 5000; i++)
cstr = make_cstr_from_static (type, "Hello, world!");
cstr = SCM_BOOL_F;
}
scm_gc ();
scm_gc ();
scm_gc ();
/* Allow time for the finalizer thread to run. */
scm_usleep (scm_from_uint (50 * 1000));
}
static void
tests (void *data, int argc, char **argv)
{
test_scm_foreign_object ();
}
int
main (int argc, char *argv[])
{
scm_boot_guile (argc, argv, tests, NULL);
return 0;
}
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