mirror of
https://github.com/moses-smt/mosesdecoder.git
synced 2024-09-11 19:27:11 +03:00
44 lines
874 B
C++
44 lines
874 B
C++
#include "util/random.hh"
|
|
|
|
#include <cstdlib>
|
|
|
|
#include <boost/thread/locks.hpp>
|
|
// #include <boost/thread/lock_guard.hpp>
|
|
#include <boost/thread/mutex.hpp>
|
|
|
|
namespace util
|
|
{
|
|
namespace
|
|
{
|
|
/** Lock to protect randomizer.
|
|
*
|
|
* This module is implemented in terms of rand()/srand() from <cstdlib>.
|
|
* These functions are standard C, but they're not thread-safe. Scalability
|
|
* is not worth much complexity here, so just slap a mutex around it.
|
|
*/
|
|
boost::mutex rand_lock;
|
|
} // namespace
|
|
|
|
void rand_init(unsigned int seed)
|
|
{
|
|
boost::lock_guard<boost::mutex> lock(rand_lock);
|
|
srand(seed);
|
|
}
|
|
|
|
|
|
void rand_init()
|
|
{
|
|
rand_init(time(NULL));
|
|
}
|
|
|
|
namespace internal
|
|
{
|
|
// This is the one call to the actual randomizer. All else is built on this.
|
|
int rand_int()
|
|
{
|
|
boost::lock_guard<boost::mutex> lock(rand_lock);
|
|
return std::rand();
|
|
}
|
|
} // namespace internal
|
|
} // namespace util
|