ae0b7c0063
git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@1419985 13f79535-47bb-0310-9956-ffa450edef68
72 lines
1.9 KiB
C++
72 lines
1.9 KiB
C++
/*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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*/
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/* $Rev$ $Date$ */
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#ifndef tuscany_perf_hpp
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#define tuscany_perf_hpp
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/**
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* Functions to help measure performance.
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*/
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#include <sys/time.h>
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#include <time.h>
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#include "function.hpp"
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namespace tuscany
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{
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/**
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* Measure the time required to perform a function in msec.
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*/
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inline const double time(const blambda& f, const long warmup, const long count) {
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struct timeval start;
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struct timeval end;
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const lambda<const bool(const long)> tl = [f](const long count) -> const bool {
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for (long i = 0; i < count; i++)
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f();
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return true;
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};
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tl(warmup);
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gettimeofday(&start, NULL);
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tl(count);
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gettimeofday(&end, NULL);
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const long t = (end.tv_sec * 1000 + end.tv_usec / 1000) - (start.tv_sec * 1000 + start.tv_usec / 1000);
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return (double)t / (double)count;
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}
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inline const unsigned long timems() {
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struct timeval t;
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gettimeofday(&t, NULL);
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return (unsigned long)(t.tv_sec * 1000 + t.tv_usec / 1000);
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}
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inline const unsigned long timens() {
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struct timeval t;
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gettimeofday(&t, NULL);
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return (unsigned long)(t.tv_sec * 1000000000 + t.tv_usec * 1000);
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}
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}
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#endif /* tuscany_perf_hpp */
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