boost/log/expressions/predicates/is_debugger_present.hpp

/*
 *          Copyright Andrey Semashev 2007 - 2015.
 * 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)
 */
/*!
 * \file   is_debugger_present.hpp
 * \author Andrey Semashev
 * \date   05.12.2012
 *
 * The header contains implementation of the \c is_debugger_present predicate in template expressions.
 */
#ifndef BOOST_LOG_EXPRESSIONS_PREDICATES_IS_DEBUGGER_PRESENT_HPP_INCLUDED_
#define BOOST_LOG_EXPRESSIONS_PREDICATES_IS_DEBUGGER_PRESENT_HPP_INCLUDED_
#include <boost/log/detail/config.hpp>
#ifdef BOOST_HAS_PRAGMA_ONCE
#pragma once
#endif
#if defined(BOOST_WINDOWS)
#include <boost/phoenix/core/terminal.hpp> // this is needed to be able to include this header alone, Boost.Phoenix blows up without it
#include <boost/phoenix/function/adapt_callable.hpp>
#include <boost/log/detail/header.hpp>
#if defined(BOOST_USE_WINDOWS_H)
#ifndef _WIN32_WINNT
#define _WIN32_WINNT 0x0500
#endif
#include <windows.h>
#else // defined(BOOST_USE_WINDOWS_H)
namespace boost {
BOOST_LOG_OPEN_NAMESPACE
namespace expressions {
namespace aux {
extern "C" {
__declspec(dllimport) int __stdcall IsDebuggerPresent();
} // extern "C"
} // namespace aux
} // namespace expressions
BOOST_LOG_CLOSE_NAMESPACE // namespace log
} // namespace boost
#endif // BOOST_USE_WINDOWS_H
namespace boost {
BOOST_LOG_OPEN_NAMESPACE
namespace expressions {
namespace aux {
struct is_debugger_present
{
    typedef bool result_type;
    result_type operator() () const
    {
        return IsDebuggerPresent() != 0;
    }
};
} // namespace aux
#ifndef BOOST_LOG_DOXYGEN_PASS
BOOST_PHOENIX_ADAPT_CALLABLE_NULLARY(is_debugger_present, aux::is_debugger_present)
#else
/*!
 * The function generates a filter that will check whether the logger is attached to the process
 */
unspecified is_debugger_present();
#endif
} // namespace expressions
BOOST_LOG_CLOSE_NAMESPACE // namespace log
} // namespace boost
#include <boost/log/detail/footer.hpp>
#endif // BOOST_WINDOWS
#endif // BOOST_LOG_EXPRESSIONS_PREDICATES_IS_DEBUGGER_PRESENT_HPP_INCLUDED_