New foreign object facility, to replace SMOBs

[bpt/guile.git] / test-suite / standalone / test-foreign-object-c.c

diff --git a/test-suite/standalone/test-foreign-object-c.c b/test-suite/standalone/test-foreign-object-c.c
new file mode 100644 (file)
index 0000000..9cd8d67
--- /dev/null
+++ b/test-suite/standalone/test-foreign-object-c.c
@@ -0,0 +1,116 @@
+/* test-foreign-object-c.c - exercise C foreign object interface */
+
+/* Copyright (C) 2014 Free Software Foundation, Inc.
+ *
+ * This library 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.
+ *
+ * This library 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 this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ */
+
+#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)
+{
+  scm_t_bits addr = scm_foreign_object_ref (obj, CSTR_SLOT_ADDR);
+  free ((void *) 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, (scm_t_bits) ours, strlen (ours));
+}
+
+static int
+cstr_equals_static_p (SCM cstr, const char *str)
+{
+  const char *addr;
+  size_t len;
+
+  addr = (const char *) scm_foreign_object_ref (cstr, CSTR_SLOT_ADDR);
+  len = scm_foreign_object_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;
+}