Initial commit

libs/utils/src/EntityManager.cpp

@@ -0,0 +1,59 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * 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 "EntityManagerImpl.h"
+
+namespace utils {
+
+EntityManager::EntityManager()
+        : mGens(new uint8_t[RAW_INDEX_COUNT]) {
+    // initialize all the generations to 0
+    std::fill_n(mGens, RAW_INDEX_COUNT, 0);
+}
+
+EntityManager::~EntityManager() {
+    delete [] mGens;
+}
+
+EntityManager& EntityManager::get() noexcept {
+    // note: we leak the EntityManager because it's more important that it survives everything else
+    // the leak is really not a problem because the process is terminating anyways.
+    static EntityManagerImpl* instance = new EntityManagerImpl;
+    return *instance;
+}
+
+void EntityManager::create(size_t n, Entity* entities) {
+    static_cast<EntityManagerImpl *>(this)->create(n, entities);
+}
+
+void EntityManager::destroy(size_t n, Entity* entities) noexcept {
+    static_cast<EntityManagerImpl *>(this)->destroy(n, entities);
+}
+
+
+void EntityManager::clear() noexcept {
+    static_cast<EntityManagerImpl *>(this)->clear();
+}
+
+void EntityManager::registerListener(EntityManager::Listener* l) noexcept {
+    static_cast<EntityManagerImpl *>(this)->registerListener(l);
+}
+
+void EntityManager::unregisterListener(EntityManager::Listener* l) noexcept {
+    static_cast<EntityManagerImpl *>(this)->unregisterListener(l);
+}
+
+} // namespace utils