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/**
* \file main.cpp
* \brief Example program to show the use of the the claw::avl class.
*
* The program take avl values from a file and do some operations.
*
* \author Julien Jorge
*/
#include <claw/avl.hpp>
#include <algorithm>
#include <iostream>
#include <sstream>
#include <cmath>
#include <set>
#include <vector>
#include <sys/time.h>
/*----------------------------------------------------------------------------*/
template<typename SetType>
unsigned int time_insert( SetType& s, std::vector<int> data )
{
timeval beg, end;
const unsigned int n = data.size();
s.clear();
gettimeofday(&beg, NULL);
for (unsigned int i=0; i!=n; ++i)
s.insert(data[i]);
gettimeofday(&end, NULL);
SetType c(s);
return
( (end.tv_sec * 1000000 + end.tv_usec)
- (beg.tv_sec * 1000000 + beg.tv_usec) ) / 1000;
} // time_insert()
/*----------------------------------------------------------------------------*/
template<typename SetType>
unsigned int time_insert_it( SetType& s, std::vector<int> data )
{
timeval beg, end;
s.clear();
gettimeofday(&beg, NULL);
s.insert(data.begin(), data.end());
gettimeofday(&end, NULL);
return
( (end.tv_sec * 1000000 + end.tv_usec)
- (beg.tv_sec * 1000000 + beg.tv_usec) ) / 1000;
} // time_insert_it()
/*----------------------------------------------------------------------------*/
template<typename SetType>
unsigned int time_iterator( SetType& s )
{
timeval beg, end;
unsigned int v(0);
gettimeofday(&beg, NULL);
typename SetType::const_iterator it;
const typename SetType::const_iterator eit = s.end();
for (it=s.begin(); it!=eit; ++it )
v += *it;
gettimeofday(&end, NULL);
return
( (end.tv_sec * 1000000 + end.tv_usec)
- (beg.tv_sec * 1000000 + beg.tv_usec) ) / 1000;
} // time_iterator()
/*----------------------------------------------------------------------------*/
template<typename SetType>
unsigned int time_copy( SetType& s )
{
timeval beg, end;
SetType c;
gettimeofday(&beg, NULL);
c = s;
gettimeofday(&end, NULL);
return
( (end.tv_sec * 1000000 + end.tv_usec)
- (beg.tv_sec * 1000000 + beg.tv_usec) ) / 1000;
} // time_copy()
/*----------------------------------------------------------------------------*/
template<typename SetType>
unsigned int time_find( SetType& s, std::vector<int> data )
{
timeval beg, end;
unsigned int v(0);
const unsigned int n = data.size();
const typename SetType::const_iterator eit = s.end();
gettimeofday(&beg, NULL);
for (unsigned int i=0; i!=n; ++i)
if ( s.find(data[i]) != eit )
v += i;
else if ( s.find(i) != eit )
v += i;
gettimeofday(&end, NULL);
return
( (end.tv_sec * 1000000 + end.tv_usec)
- (beg.tv_sec * 1000000 + beg.tv_usec) ) / 1000;
} // time_find()
/*----------------------------------------------------------------------------*/
template<typename SetType>
unsigned int time_clear( SetType& s )
{
timeval beg, end;
gettimeofday(&beg, NULL);
s.clear();
gettimeofday(&end, NULL);
return
( (end.tv_sec * 1000000 + end.tv_usec)
- (beg.tv_sec * 1000000 + beg.tv_usec) ) / 1000;
} // time_clear()
/*----------------------------------------------------------------------------*/
void do_bench( const std::vector<int>& data )
{
std::set<int> s;
claw::avl<int> a;
std::cout << data.size() << '\t'
<< time_insert(a, data) << ' ' << time_insert(s, data) << '\t'
<< time_insert_it(a, data) << ' ' << time_insert_it(s, data) << '\t'
<< time_iterator(a) << ' ' << time_iterator(s) << '\t'
<< time_copy(a) << ' ' << time_copy(s) << '\t'
<< time_find(a, data) << ' ' << time_find(s, data) << '\t'
<< time_clear(a) << ' ' << time_clear(s) << std::endl;
} // do_bench()
/*----------------------------------------------------------------------------*/
void benchmark( std::vector<int>& data )
{
std::cout << "# milliseconds (avl, std::set)\n";
std::cout << "# n insert insert(it) iterator copy find clear\n";
do_bench(data);
std::cout << "# sorted inc\n";
std::sort( data.begin(), data.end() );
do_bench(data);
std::cout << "# sorted dec\n";
std::sort( data.begin(), data.end(), std::greater<int>() );
do_bench(data);
} // benchmark()
int main( int argc, char* argv[] )
{
srand(time(NULL));
if (argc != 2)
{
std::cout << argv[0] << " count" << std::endl;
return 1;
}
else
{
std::istringstream iss( argv[1] );
unsigned int n;
if ( !(iss >> n) )
{
std::cerr << "not a number " << argv[1] << std::endl;
return 1;
}
else
{
std::vector<int> data;
data.reserve(n);
for (unsigned int i=0; i!=n; ++i)
data.push_back( rand() );
benchmark(data);
}
}
return 0;
} // main()
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