time_benchmark.cpp revision 7634db5a0657129225869c3650a992f9cbe82fe4
1/* 2 * Copyright (C) 2013 The Android Open Source Project 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 "benchmark.h" 18 19#include <time.h> 20 21#if defined(__BIONIC__) 22 23// Used by the horrible android.text.format.Time class, which is used by Calendar. http://b/8270865. 24extern "C" void localtime_tz(const time_t* const timep, struct tm* tmp, const char* tz); 25 26static void BM_time_localtime_tz(int iters) { 27 StartBenchmarkTiming(); 28 29 time_t now(time(NULL)); 30 tm broken_down_time; 31 for (int i = 0; i < iters; ++i) { 32 localtime_tz(&now, &broken_down_time, "Europe/Berlin"); 33 } 34 35 StopBenchmarkTiming(); 36} 37BENCHMARK(BM_time_localtime_tz); 38 39#endif 40 41static void BM_time_clock_gettime(int iters) { 42 StartBenchmarkTiming(); 43 44 struct timespec t; 45 for (int i = 0; i < iters; ++i) { 46 clock_gettime(CLOCK_MONOTONIC, &t); 47 } 48 49 StopBenchmarkTiming(); 50} 51BENCHMARK(BM_time_clock_gettime); 52