| /* |
| * Copyright 2015 Google Inc. All rights reserved. |
| * |
| * 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 "utils.h" |
| |
| #include <cstdlib> |
| #include <iostream> |
| #include <stdexcept> |
| #include <string> |
| #include <sstream> |
| |
| namespace speedtest { |
| |
| long SystemTimeMicros() { |
| struct timespec ts; |
| if (clock_gettime(CLOCK_MONOTONIC, &ts)) { |
| std::cerr << "Error reading system time\n"; |
| std::exit(1); |
| } |
| return ts.tv_sec * 1000000 + ts.tv_nsec / 1000; |
| } |
| |
| std::string to_string(long n) |
| { |
| std::ostringstream s; |
| s << n; |
| return s.str(); |
| } |
| |
| int stoi(const std::string& str) |
| { |
| int rc; |
| std::istringstream n(str); |
| |
| if (!(n >> rc)) { |
| std::cerr << "Not a number: " << str; |
| std::exit(1); |
| } |
| |
| return rc; |
| } |
| |
| } // namespace speedtest |