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authorDave Barach <dave@barachs.net>2017-10-30 09:42:54 -0400
committerFlorin Coras <florin.coras@gmail.com>2017-10-30 19:03:52 +0000
commit310518e522aff7ab6f4c5799765d39ecf0c7fb4c (patch)
tree005c59a6dcabfb4b4569f916d1daf3bffde57176 /src/vppinfra/test_bihash_vec88.c
parentcaa176b5435130f03051700731d4bf7a605719f8 (diff)
Add the bihash_vec8_8 variant
This is an all-purpose octet-vector memory hash, intended as a thread-safe replacement for hash_create_mem / hash_create_string. All u8 * key vectors are memorized by the hash table. Change-Id: I22944daea8fda07dde8ba118a6529a6d382491f9 Signed-off-by: Dave Barach <dave@barachs.net>
Diffstat (limited to 'src/vppinfra/test_bihash_vec88.c')
-rw-r--r--src/vppinfra/test_bihash_vec88.c302
1 files changed, 302 insertions, 0 deletions
diff --git a/src/vppinfra/test_bihash_vec88.c b/src/vppinfra/test_bihash_vec88.c
new file mode 100644
index 00000000000..a57ceec301b
--- /dev/null
+++ b/src/vppinfra/test_bihash_vec88.c
@@ -0,0 +1,302 @@
+/*
+ * Copyright (c) 2017 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.
+ */
+#include <vppinfra/time.h>
+#include <vppinfra/cache.h>
+#include <vppinfra/error.h>
+
+#include <vppinfra/bihash_vec8_8.h>
+#include <vppinfra/bihash_template.h>
+
+#include <vppinfra/bihash_template.c>
+
+typedef struct
+{
+ u32 seed;
+ u32 nbuckets;
+ u32 nitems;
+ u32 search_iter;
+ int careful_delete_tests;
+ int verbose;
+ int non_random_keys;
+ uword *key_hash;
+ u8 **keys;
+ BVT (clib_bihash) hash;
+ clib_time_t clib_time;
+
+ unformat_input_t *input;
+
+} test_main_t;
+
+test_main_t test_main;
+
+uword
+vl (void *v)
+{
+ return vec_len (v);
+}
+
+static clib_error_t *
+test_bihash (test_main_t * tm)
+{
+ int i, j;
+ uword *p;
+ uword total_searches;
+ f64 before, delta;
+ BVT (clib_bihash) * h;
+ BVT (clib_bihash_kv) kv;
+
+ h = &tm->hash;
+
+ BV (clib_bihash_init) (h, "test", tm->nbuckets, 3ULL << 30);
+
+ fformat (stdout, "Pick %lld unique %s keys...\n",
+ tm->nitems, tm->non_random_keys ? "non-random" : "random");
+
+ for (i = 0; i < tm->nitems; i++)
+ {
+ u8 *random_vec8;
+
+ if (tm->non_random_keys == 0)
+ {
+ u32 len;
+
+ again:
+ do
+ {
+ len = random_u32 (&tm->seed);
+ len %= 64;
+ }
+ while (len == 0);
+
+ random_vec8 = random_string (&tm->seed, len);
+ vec_add1 (random_vec8, 0);
+
+ p = hash_get_mem (tm->key_hash, random_vec8);
+ if (p)
+ goto again;
+ }
+ else
+ {
+ random_vec8 = format (0, "String%d%c", i, 0);
+ }
+
+ hash_set_mem (tm->key_hash, random_vec8, i + 1);
+ vec_add1 (tm->keys, random_vec8);
+ }
+
+ fformat (stdout, "Add items...\n");
+ for (i = 0; i < tm->nitems; i++)
+ {
+ kv.key = (u64) tm->keys[i];
+ kv.value = i + 1;
+
+ BV (clib_bihash_add_del) (h, &kv, 1 /* is_add */ );
+
+ if (tm->verbose > 1)
+ {
+ fformat (stdout, "--------------------\n");
+ fformat (stdout, "After adding key %llu value %lld...\n",
+ tm->keys[i], (u64) (i + 1));
+ fformat (stdout, "%U", BV (format_bihash), h,
+ 2 /* very verbose */ );
+ }
+ }
+
+ fformat (stdout, "%U", BV (format_bihash), h, 0 /* very verbose */ );
+
+ fformat (stdout, "Search for items %d times...\n", tm->search_iter);
+
+ before = clib_time_now (&tm->clib_time);
+
+ for (j = 0; j < tm->search_iter; j++)
+ {
+ for (i = 0; i < tm->nitems; i++)
+ {
+ kv.key = (u64) tm->keys[i];
+ if (BV (clib_bihash_search) (h, &kv, &kv) < 0)
+ if (BV (clib_bihash_search) (h, &kv, &kv) < 0)
+ clib_warning ("[%d] search for key %lld failed unexpectedly\n",
+ i, tm->keys[i]);
+ if (kv.value != (u64) (i + 1))
+ clib_warning
+ ("[%d] search for key %lld returned %lld, not %lld\n", i,
+ tm->keys, kv.value, (u64) (i + 1));
+ }
+ }
+
+ delta = clib_time_now (&tm->clib_time) - before;
+ total_searches = (uword) tm->search_iter * (uword) tm->nitems;
+
+ if (delta > 0)
+ fformat (stdout, "%.f searches per second\n",
+ ((f64) total_searches) / delta);
+
+ fformat (stdout, "%lld searches in %.6f seconds\n", total_searches, delta);
+
+ fformat (stdout, "Standard E-hash search for items %d times...\n",
+ tm->search_iter);
+
+ before = clib_time_now (&tm->clib_time);
+
+ for (j = 0; j < tm->search_iter; j++)
+ {
+ for (i = 0; i < tm->nitems; i++)
+ {
+ p = hash_get_mem (tm->key_hash, tm->keys[i]);
+ if (p == 0 || p[0] != (uword) (i + 1))
+ clib_warning ("ugh, couldn't find %lld\n", tm->keys[i]);
+ }
+ }
+
+ delta = clib_time_now (&tm->clib_time) - before;
+ total_searches = (uword) tm->search_iter * (uword) tm->nitems;
+
+ fformat (stdout, "%lld searches in %.6f seconds\n", total_searches, delta);
+
+ if (delta > 0)
+ fformat (stdout, "%.f searches per second\n",
+ ((f64) total_searches) / delta);
+
+ fformat (stdout, "Delete items...\n");
+
+ for (i = 0; i < tm->nitems; i++)
+ {
+ int j;
+ int rv;
+
+ kv.key = (u64) tm->keys[i];
+ kv.value = (u64) (i + 1);
+ rv = BV (clib_bihash_add_del) (h, &kv, 0 /* is_add */ );
+
+ if (rv < 0)
+ clib_warning ("delete key %lld not ok but should be", tm->keys[i]);
+
+ if (tm->careful_delete_tests)
+ {
+ for (j = 0; j < tm->nitems; j++)
+ {
+ kv.key = (u64) tm->keys[j];
+ rv = BV (clib_bihash_search) (h, &kv, &kv);
+ if (j <= i && rv >= 0)
+ {
+ clib_warning
+ ("i %d j %d search ok but should not be, value %lld",
+ i, j, kv.value);
+ }
+ if (j > i && rv < 0)
+ {
+ clib_warning ("i %d j %d search not ok but should be",
+ i, j);
+ }
+ }
+ }
+ }
+
+ fformat (stdout, "After deletions, should be empty...\n");
+
+ fformat (stdout, "%U", BV (format_bihash), h, 0 /* very verbose */ );
+ return 0;
+}
+
+clib_error_t *
+test_bihash_main (test_main_t * tm)
+{
+ unformat_input_t *i = tm->input;
+ clib_error_t *error;
+ int which = 0;
+
+ while (unformat_check_input (i) != UNFORMAT_END_OF_INPUT)
+ {
+ if (unformat (i, "seed %u", &tm->seed))
+ ;
+
+ else if (unformat (i, "nbuckets %d", &tm->nbuckets))
+ ;
+ else if (unformat (i, "non-random-keys"))
+ tm->non_random_keys = 1;
+ else if (unformat (i, "nitems %d", &tm->nitems))
+ ;
+ else if (unformat (i, "careful %d", &tm->careful_delete_tests))
+ ;
+ else if (unformat (i, "verbose %d", &tm->verbose))
+ ;
+ else if (unformat (i, "search %d", &tm->search_iter))
+ ;
+ else if (unformat (i, "vec64"))
+ which = 1;
+ else if (unformat (i, "cache"))
+ which = 2;
+
+ else if (unformat (i, "verbose"))
+ tm->verbose = 1;
+ else
+ return clib_error_return (0, "unknown input '%U'",
+ format_unformat_error, i);
+ }
+
+ switch (which)
+ {
+ case 0:
+ error = test_bihash (tm);
+ break;
+
+ default:
+ return clib_error_return (0, "no such test?");
+ }
+
+ return error;
+}
+
+#ifdef CLIB_UNIX
+int
+main (int argc, char *argv[])
+{
+ unformat_input_t i;
+ clib_error_t *error;
+ test_main_t *tm = &test_main;
+
+ clib_mem_init (0, 3ULL << 30);
+
+ tm->input = &i;
+ tm->seed = 0xdeaddabe;
+
+ tm->nbuckets = 2;
+ tm->nitems = 5;
+ tm->verbose = 1;
+ tm->search_iter = 1;
+ tm->careful_delete_tests = 0;
+ tm->key_hash = hash_create_string (0, sizeof (uword));
+ clib_time_init (&tm->clib_time);
+
+ unformat_init_command_line (&i, argv);
+ error = test_bihash_main (tm);
+ unformat_free (&i);
+
+ if (error)
+ {
+ clib_error_report (error);
+ return 1;
+ }
+ return 0;
+}
+#endif /* CLIB_UNIX */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */