| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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. |
| */ |
| |
| /* $Rev$ $Date$ */ |
| |
| #ifndef tuscany_perf_hpp |
| #define tuscany_perf_hpp |
| |
| /** |
| * Functions to help measure performance. |
| */ |
| |
| #include <sys/time.h> |
| #include <time.h> |
| |
| #include "function.hpp" |
| |
| namespace tuscany |
| { |
| |
| /** |
| * Measure the time required to perform a function in msec. |
| */ |
| struct timeLambda { |
| const lambda<bool()> f; |
| timeLambda(const lambda<bool()>& f) : f(f) { |
| } |
| bool operator()(const long count) const { |
| if (count == 0) |
| return true; |
| f(); |
| (*this)(count - 1); |
| return true; |
| } |
| }; |
| |
| const double time(const lambda<bool()>& f, const long warmup, const long count) { |
| const lambda<bool(long)> tl = timeLambda(f); |
| struct timeval start; |
| struct timeval end; |
| |
| tl(warmup); |
| gettimeofday(&start, NULL); |
| tl(count); |
| gettimeofday(&end, NULL); |
| |
| const long t = (end.tv_sec * 1000 + end.tv_usec / 1000) - (start.tv_sec * 1000 + start.tv_usec / 1000); |
| return (double)t / (double)count; |
| } |
| |
| const unsigned long timems() { |
| struct timeval t; |
| gettimeofday(&t, NULL); |
| return (unsigned long)(t.tv_sec * 1000 + t.tv_usec / 1000); |
| } |
| |
| const unsigned long timens() { |
| struct timeval t; |
| gettimeofday(&t, NULL); |
| return (unsigned long)(t.tv_sec * 1000000000 + t.tv_usec * 1000); |
| } |
| |
| } |
| #endif /* tuscany_perf_hpp */ |