lean2/src/util/timeit.h

/*
Copyright (c) 2013 Microsoft Corporation. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.

Author: Leonardo de Moura
*/
#pragma once
#include <iostream>
#include <time.h>

namespace lean {
/**
   \brief Low tech timer for used for testing.
*/
class timeit {
    std::ostream & m_out;
    std::string    m_msg;
    clock_t        m_start;
public:
    timeit(std::ostream & out, char const * msg):m_out(out), m_msg(msg) {
        m_start = clock();
    }
    ~timeit() {
        clock_t end = clock();
        m_out << m_msg << " " << ((static_cast<double>(end) - static_cast<double>(m_start)) / CLOCKS_PER_SEC) << " secs\n";
    }
};
}