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/*=============================================================================
Boost.Wave: A Standard compliant C++ preprocessor library
http://www.boost.org/
Copyright (c) 2001-2012 Hartmut Kaiser. Distributed under the Boost
Software License, Version 1.0. (See accompanying file
LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
=============================================================================*/
#if !defined(STOP_WATCH_HPP_HK040911_INCLUDED)
#define STOP_WATCH_HPP_HK040911_INCLUDED
#include <boost/config.hpp>
#include <boost/timer.hpp>
///////////////////////////////////////////////////////////////////////////////
//
class stop_watch : public boost::timer {
typedef boost::timer base_t;
public:
stop_watch() : is_suspended_since(0), suspended_overall(0) {}
void suspend()
{
if (0 == is_suspended_since) {
// if not already suspended
is_suspended_since = this->base_t::elapsed();
}
}
void resume()
{
if (0 != is_suspended_since) {
// if really suspended
suspended_overall += this->base_t::elapsed() - is_suspended_since;
is_suspended_since = 0;
}
}
double elapsed() const
{
if (0 == is_suspended_since) {
// currently running
return this->base_t::elapsed() - suspended_overall;
}
// currently suspended
BOOST_ASSERT(is_suspended_since >= suspended_overall);
return is_suspended_since - suspended_overall;
}
std::string format_elapsed_time() const
{
double current = elapsed();
char time_buffer[sizeof("1234:56:78.90 abcd.")+1];
using namespace std;
if (current >= 3600) {
// show hours
sprintf (time_buffer, "%d:%02d:%02d.%03d hrs.",
(int)(current) / 3600, ((int)(current) % 3600) / 60,
((int)(current) % 3600) % 60,
(int)(current * 1000) % 1000);
}
else if (current >= 60) {
// show minutes
sprintf (time_buffer, "%d:%02d.%03d min.",
(int)(current) / 60, (int)(current) % 60,
(int)(current * 1000) % 1000);
}
else {
// show seconds
sprintf(time_buffer, "%d.%03d sec.", (int)current,
(int)(current * 1000) % 1000);
}
return time_buffer;
}
private:
double is_suspended_since;
double suspended_overall;
};
#endif // !defined(STOP_WATCH_HPP_HK040911_INCLUDED)
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