1 files changed, 144 insertions, 0 deletions
diff --git a/src/vppinfra/test_fifo.c b/src/vppinfra/test_fifo.c
new file mode 100644
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+++ b/src/vppinfra/test_fifo.c
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+/*
+ * Copyright (c) 2015 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/*
+  Copyright (c) 2005 Eliot Dresselhaus
+
+  Permission is hereby granted, free of charge, to any person obtaining
+  a copy of this software and associated documentation files (the
+  "Software"), to deal in the Software without restriction, including
+  without limitation the rights to use, copy, modify, merge, publish,
+  distribute, sublicense, and/or sell copies of the Software, and to
+  permit persons to whom the Software is furnished to do so, subject to
+  the following conditions:
+
+  The above copyright notice and this permission notice shall be
+  included in all copies or substantial portions of the Software.
+
+  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+  LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+  OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+  WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+*/
+
+#include <vppinfra/fifo.h>
+#include <vppinfra/random.h>
+
+typedef struct
+{
+  int a, b, c;
+} A;
+
+always_inline void
+A_set (A * a, int k)
+{
+  a->a = 1 * k;
+  a->b = 2 * k;
+  a->c = 3 * k;
+}
+
+always_inline int
+A_is_valid (A * a, int k)
+{
+  return a->a == 1 * k && a->b == 2 * k && a->c == 3 * k;
+}
+
+int
+test_fifo_main (unformat_input_t * input)
+{
+  u32 n_added, n_removed, i, j, n_iter, seed, verbose;
+  A *as = 0, *a;
+
+  n_iter = 1000;
+  seed = random_default_seed ();
+  verbose = 0;
+
+  while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
+    {
+      if (unformat (input, "iter %d", &n_iter))
+	;
+      else if (unformat (input, "seed %d", &seed))
+	;
+      else if (unformat (input, "verbose %=", &verbose, 1))
+	;
+      else
+	{
+	  clib_warning ("unknown input `%U'\n", format_unformat_error, input);
+	  return 1;
+	}
+    }
+
+  if (verbose)
+    clib_warning ("iter %d seed %d\n", n_iter, seed);
+
+  n_added = n_removed = 0;
+  for (i = 0; i < n_iter; i++)
+    {
+      if (clib_fifo_elts (as) > 0 && (random_u32 (&seed) & 1))
+	{
+	  A tmp;
+	  clib_fifo_sub1 (as, tmp);
+	  ASSERT (A_is_valid (&tmp, n_removed));
+	  n_removed++;
+	}
+      else
+	{
+	  clib_fifo_add2 (as, a);
+	  A_set (a, n_added);
+	  n_added++;
+	}
+
+      ASSERT (clib_fifo_elts (as) == n_added - n_removed);
+
+      j = 0;
+      /* *INDENT-OFF* */
+      clib_fifo_foreach (a, as, {
+	ASSERT (A_is_valid (a, n_removed + j));
+	j++;
+      });
+      /* *INDENT-ON* */
+
+      ASSERT (j == clib_fifo_elts (as));
+    }
+
+  clib_fifo_free (as);
+
+  return 0;
+}
+
+#ifdef CLIB_UNIX
+int
+main (int argc, char *argv[])
+{
+  unformat_input_t i;
+  int r;
+
+  unformat_init_command_line (&i, argv);
+  r = test_fifo_main (&i);
+  unformat_free (&i);
+
+  return r;
+}
+#endif
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */