1 files changed, 88 insertions, 0 deletions
diff --git a/hicn-light/src/hicn/core/content_store.c b/hicn-light/src/hicn/core/content_store.c
new file mode 100644
index 000000000..360e6d333
--- /dev/null
+++ b/hicn-light/src/hicn/core/content_store.c
@@ -0,0 +1,88 @@
+/*
+ * Copyright (c) 2021 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.
+ */
+
+/**
+ * \file content_store.c
+ * \brief Implementation of hICN content_store
+ */
+
+#include "content_store.h"
+#include "packet_cache.h"
+
+extern const cs_ops_t cs_lru;
+
+const cs_ops_t *const cs_vft[] = {
+    [CS_TYPE_LRU] = &cs_lru,
+};
+
+cs_t *_cs_create(cs_type_t type, size_t max_size) {
+  if (!CS_TYPE_VALID(type)) {
+    ERROR("[cs_create] Invalid content store type");
+    return NULL;
+  }
+
+  if (max_size == 0) max_size = DEFAULT_CS_SIZE;
+
+  cs_t *cs = malloc(sizeof(cs_t));
+  if (!cs) return NULL;
+
+  cs->type = type;
+  cs->num_entries = 0;
+  cs->max_size = max_size;
+  cs_vft[type]->initialize(cs);
+  cs->stats.lru = (cs_lru_stats_t){0};
+
+  return cs;
+}
+
+void cs_free(cs_t *cs) {
+  assert(cs);
+
+  cs_vft[cs->type]->finalize(cs);
+  free(cs);
+}
+
+void _cs_clear(cs_t **cs_ptr) {
+  cs_type_t cs_type = (*cs_ptr)->type;
+  size_t max_size = (*cs_ptr)->max_size;
+
+  // Free and recreate the CS
+  cs_free(*cs_ptr);
+  *cs_ptr = _cs_create(cs_type, max_size);
+}
+
+void cs_hit(cs_t *cs) {
+  cs->stats.lru.countHits++;
+  TRACE("ContentStore hit (hits %u, misses %u)", cs->stats.lru.countHits,
+        cs->stats.lru.countMisses);
+}
+
+void cs_miss(cs_t *cs) {
+  cs->stats.lru.countMisses++;
+  TRACE("ContentStore miss (hits %u, misses %u)", cs->stats.lru.countHits,
+        cs->stats.lru.countMisses);
+}
+
+void cs_log(cs_t *cs) {
+  DEBUG(
+      "Content store: size = %u, capacity = %u, hits = %u, misses = %u, adds = "
+      "%u, updates = %u, deletions = %u (with evictions = %u)",
+      cs->num_entries, cs->max_size, cs->stats.lru.countHits,
+      cs->stats.lru.countMisses, cs->stats.lru.countAdds,
+      cs->stats.lru.countUpdates, cs->stats.lru.countLruDeletions,
+      cs->stats.lru.countLruEvictions);
+}
+
+cs_lru_stats_t cs_get_lru_stats(cs_t *cs) { return cs->stats.lru; }