performance_counter_init.hpp

用STL的方式封装了WindowsAPI、COM调用、ACE、ATL、MFC、WTL等多种组件

/* /////////////////////////////////////////////////////////////////////////
 * File:        stlsoft/performance/performance_counter_init.hpp (formerly winstl_performance_counter_init.h)
 *
 * Purpose:     Performance counter initialising class.
 *
 * Created:     30th July 2002
 * Updated:     10th June 2006
 *
 * Home:        http://stlsoft.org/
 *
 * Copyright (c) 2002-2006, Matthew Wilson and Synesis Software
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * - Redistributions of source code must retain the above copyright notice, this
 *   list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright notice,
 *   this list of conditions and the following disclaimer in the documentation
 *   and/or other materials provided with the distribution.
 * - Neither the name(s) of Matthew Wilson and Synesis Software nor the names of
 *   any contributors may be used to endorse or promote products derived from
 *   this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 *
 * ////////////////////////////////////////////////////////////////////// */


/** \file stlsoft/performance/performance_counter_init.hpp
 *
 * \brief [C++ only] Definition of the stlsoft::performance_counter_initialiser
 *  class template.
 *  (\ref group__library__performance "Performance" Library.)
 */

#ifndef STLSOFT_INCL_STLSOFT_HPP_PERFORMANCE_COUNTER_INIT
#define STLSOFT_INCL_STLSOFT_HPP_PERFORMANCE_COUNTER_INIT

#ifndef STLSOFT_DOCUMENTATION_SKIP_SECTION
# define STLSOFT_VER_STLSOFT_HPP_PERFORMANCE_COUNTER_INIT_MAJOR     4
# define STLSOFT_VER_STLSOFT_HPP_PERFORMANCE_COUNTER_INIT_MINOR     0
# define STLSOFT_VER_STLSOFT_HPP_PERFORMANCE_COUNTER_INIT_REVISION  1
# define STLSOFT_VER_STLSOFT_HPP_PERFORMANCE_COUNTER_INIT_EDIT      29
#endif /* !STLSOFT_DOCUMENTATION_SKIP_SECTION */

/* /////////////////////////////////////////////////////////////////////////
 * Includes
 */

#ifndef STLSOFT_INCL_STLSOFT_H_STLSOFT
# include <stlsoft/stlsoft.h>
#endif /* !STLSOFT_INCL_STLSOFT_H_STLSOFT */

/* /////////////////////////////////////////////////////////////////////////
 * Namespace
 */

#ifndef _STLSOFT_NO_NAMESPACE
namespace stlsoft
{
#endif /* _STLSOFT_NO_NAMESPACE */

/* /////////////////////////////////////////////////////////////////////////
 * Classes
 */

// class performance_counter_initialiser
/** \brief A \ref group__pattern__class_adaptor "class adaptor" that
 *   initialises a performance counter.
 *
 * \ingroup group__library__performance
 *
 * \param C The performance counter type.
 */
template <ss_typename_param_k C>
class performance_counter_initialiser
    : public C
{
/// \name Member Types
/// @{
public:
    /// \brief The counter type
    typedef C                                   counter_type;
    /// \brief The class type
    typedef performance_counter_initialiser<C>  class_type;
/// @}

/// \name Construction
/// @{
public:
    /// \brief Initialises the counter by calling start() and stop() on it.
    performance_counter_initialiser()
    {
        counter_type::start();
        counter_type::stop();
    }
/// @}
};

/* ////////////////////////////////////////////////////////////////////// */

#ifndef _STLSOFT_NO_NAMESPACE
} // namespace stlsoft
#endif /* _STLSOFT_NO_NAMESPACE */

/* ////////////////////////////////////////////////////////////////////// */

#endif /* !STLSOFT_INCL_STLSOFT_HPP_PERFORMANCE_COUNTER_INIT */

/* ////////////////////////////////////////////////////////////////////// */