Listing 1 Extract from winstl_tick_counter.h

/* /////////////////////////////////////////////////////////////
 * ...
 *
 * Extract from winstl_tick_counter.h
 *
 * Copyright (C) 2002, Synesis Software Pty Ltd.
 * (Licensed under the Synesis Software Standard Source License:
 *  http://www.synesis.com.au/licenses/ssssl.html)
 *
 * ...
 * ////////////////////////////////////////////////////////// */

// Operations
inline void tick_counter::start()
{
    m_start = ::GetTickCount();
}

inline void tick_counter::stop()
{
    m_end = ::GetTickCount();
}

// Attributes
inline tick_counter::interval_type tick_counter::get_period_count() const
{
    return static_cast<interval_type>(m_end - m_start);
}

inline tick_counter::interval_type tick_counter::get_seconds() const
{
    return get_period_count() / interval_type(1000);
}

inline tick_counter::interval_type tick_counter::get_milliseconds() const
{
    return get_period_count();
}

inline tick_counter::interval_type tick_counter::get_microseconds() const
{
    return get_period_count() * interval_type(1000);
}