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cpuconf.cpp    64 lines (52 with data), 1.6 kB

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/* Copyright (C) 2013 J.F.Dockes
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the
* Free Software Foundation, Inc.,
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef TEST_CPUCONF
#include "autoconfig.h"
#include "cpuconf.h"
#include <thread>
// Go c++11 !
bool getCpuConf(CpuConf& cpus)
{
#if defined(_WIN32)
// On windows, indexing is actually twice slower with threads
// enabled + there is a bug and the process does not exit at the
// end of indexing. Until these are solved, pretend there is only
// 1 cpu
cpus.ncpus = 1;
#else
// c++11
cpus.ncpus = std::thread::hardware_concurrency();
#endif
return true;
}
#else // TEST_CPUCONF
#include <stdlib.h>
#include <iostream>
using namespace std;
#include "cpuconf.h"
// Test driver
int main(int argc, const char **argv)
{
CpuConf cpus;
if (!getCpuConf(cpus)) {
cerr << "getCpuConf failed" << endl;
exit(1);
}
cout << "Cpus: " << cpus.ncpus << endl;
exit(0);
}
#endif // TEST_CPUCONF