1 /* 2 * 3 * Copyright 2015 gRPC authors. 4 * 5 * Licensed under the Apache License, Version 2.0 (the "License"); 6 * you may not use this file except in compliance with the License. 7 * You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 * 17 */ 18 19 #ifndef TEST_QPS_USAGE_TIMER_H 20 #define TEST_QPS_USAGE_TIMER_H 21 22 class UsageTimer { 23 public: 24 UsageTimer(); 25 26 struct Result { 27 double wall; 28 double user; 29 double system; 30 unsigned long long total_cpu_time; 31 unsigned long long idle_cpu_time; 32 }; 33 34 Result Mark() const; 35 36 static double Now(); 37 38 private: 39 static Result Sample(); 40 41 const Result start_; 42 }; 43 44 #endif // TEST_QPS_TIMER_H 45