1 /* 2 * Copyright (c) Facebook, Inc. and its affiliates. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #include <folly/test/SingletonTestStructs.h> 18 19 #include <atomic> 20 21 namespace { 22 // A simple class that tracks how often instances of the class and 23 // subclasses are created, and the ordering. Also tracks a global 24 // unique counter for each object. 25 std::atomic<size_t> global_counter(19770326); 26 } // namespace 27 creation_order()28std::vector<Watchdog*>& Watchdog::creation_order() { 29 static std::vector<Watchdog*> ret; 30 return ret; 31 } 32 Watchdog()33Watchdog::Watchdog() : serial_number(++global_counter) { 34 creation_order().push_back(this); 35 } 36