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/* <!-- copyright */
/*
* aria2 - The high speed download utility
*
* Copyright (C) 2006 Tatsuhiro Tsujikawa
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* In addition, as a special exception, the copyright holders give
* permission to link the code of portions of this program with the
* OpenSSL library under certain conditions as described in each
* individual source file, and distribute linked combinations
* including the two.
* You must obey the GNU General Public License in all respects
* for all of the code used other than OpenSSL. If you modify
* file(s) with this exception, you may extend this exception to your
* version of the file(s), but you are not obligated to do so. If you
* do not wish to do so, delete this exception statement from your
* version. If you delete this exception statement from all source
* files in the program, then also delete it here.
*/
/* copyright --> */
#include "SimpleRandomizer.h"
#include "a2time.h"
#include <cstdlib>
#include <sys/types.h>
#include <unistd.h>
namespace aria2 {
SharedHandle<SimpleRandomizer> SimpleRandomizer::_randomizer;
SharedHandle<SimpleRandomizer> SimpleRandomizer::getInstance()
{
if(_randomizer.isNull()) {
_randomizer.reset(new SimpleRandomizer());
}
return _randomizer;
}
void SimpleRandomizer::init()
{
srand(time(0)^getpid());
}
SimpleRandomizer::SimpleRandomizer() {}
SimpleRandomizer::~SimpleRandomizer() {}
long int SimpleRandomizer::getRandomNumber()
{
return rand();
}
long int SimpleRandomizer::getMaxRandomNumber()
{
return RAND_MAX;
}
long int SimpleRandomizer::getRandomNumber(long int to)
{
return(int32_t)(((double)to)*getRandomNumber()/(getMaxRandomNumber()+1.0));
}
long int SimpleRandomizer::operator()(long int to)
{
return getRandomNumber(to);
}
} // namespace aria2
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