/* * 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/heap.h> #include <vppinfra/format.h> #include <vppinfra/pool.h> #include <vppinfra/error.h> #include <vppinfra/hash.h> #include <vppinfra/cache.h> #include <vppinfra/time.h> #include <vppinfra/cache.h> #include <vppinfra/error.h> #include <vppinfra/cuckoo_8_8.h> #include <vppinfra/cuckoo_template.h> #include <vppinfra/cuckoo_template.c> typedef struct { u64 seed; u32 nbuckets; u32 nitems; u32 search_iter; int careful_delete_tests; int verbose; int non_random_keys; uword *key_hash; u64 *keys; CVT (clib_cuckoo) 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); } void do_search (test_main_t * tm, CVT (clib_cuckoo) * h) { int i, j; CVT (clib_cuckoo_kv) kv; for (j = 0; j < tm->search_iter; j++) { for (i = 0; i < tm->nitems; i++) { kv.key = tm->keys[i]; if (CV (clib_cuckoo_search) (h, &kv, &kv) < 0) if (CV (clib_cuckoo_search) (h, &kv, &kv) < 0) clib_warning ("[%d] search for key %llu failed unexpectedly\n", i, tm->keys[i]); if (kv.value != (u64) (i + 1)) clib_warning ("[%d] search for key %llu returned %llu, not %llu\n", i, tm->keys[i], kv.value, (u64) (i + 1)); } } } static void cb (CVT (clib_cuckoo) * h, void *ctx) { fformat (stdout, "Garbage callback called..."); if (clib_cpu_time_now () % 3) { fformat (stdout, "collecting garbage...\n"); CV (clib_cuckoo_garbage_collect) (h); } else { fformat (stdout, "ignoring for now...\n"); } } static clib_error_t * test_cuckoo (test_main_t * tm) { int i; uword *p; uword total_searches; f64 before, delta; CVT (clib_cuckoo) * h; CVT (clib_cuckoo_kv) kv; h = &tm->hash; CV (clib_cuckoo_init) (h, "test", tm->nbuckets, cb, NULL); fformat (stdout, "Pick %lld unique %s keys...\n", tm->nitems, tm->non_random_keys ? "non-random" : "random"); for (i = 0; i < tm->nitems; i++) { u64 rndkey; if (tm->non_random_keys == 0) { again: rndkey = random_u64 (&tm->seed); p = hash_get (tm->key_hash, rndkey); if (p) goto again; } else rndkey = (u64) (i + 1) << 16; hash_set (tm->key_hash, rndkey, i + 1); vec_add1 (tm->keys, rndkey); } fformat (stdout, "Add items...\n"); for (i = 0; i < tm->nitems; i++) { kv.key = tm->keys[i]; kv.value = i + 1; CV (clib_cuckoo_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", CV (format_cuckoo), h, 2 /* very verbose */ ); } CVT (clib_cuckoo_kv) kv2; int rv = CV (clib_cuckoo_search) (h, &kv, &kv2); ASSERT (CLIB_CUCKOO_ERROR_SUCCESS == rv); } fformat (stdout, "%U", CV (format_cuckoo), h, 0 /* very verbose */ ); fformat (stdout, "Search for items %d times...\n", tm->search_iter); before = clib_time_now (&tm->clib_time); do_search (tm, h); 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); #if 0 int j; 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 (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); #endif fformat (stdout, "Delete items...\n"); for (i = 0; i < tm->nitems; i++) { int j; int rv; kv.key = tm->keys[i]; kv.value = (u64) (i + 1); rv = CV (clib_cuckoo_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 = tm->keys[j]; rv = CV (clib_cuckoo_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", CV (format_cuckoo), h, 0 /* very verbose */ ); return 0; } clib_error_t * test_cuckoo_main (test_main_t * tm) { unformat_input_t *i = tm->input; clib_error_t *error; 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, "verbose")) tm->verbose = 1; else return clib_error_return (0, "unknown input '%U'", format_unformat_error, i); } error = test_cuckoo (tm); 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 = 100000; tm->verbose = 1; tm->search_iter = 10000; tm->careful_delete_tests = 0; tm->key_hash = hash_create (0, sizeof (uword)); clib_time_init (&tm->clib_time); unformat_init_command_line (&i, argv); error = test_cuckoo_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: */