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// -*- C++ -*-

//

// Copyright (C) 2009 Free Software Foundation, Inc.

//

// This file is part of the GNU ISO C++ Library.  This library is free

// software; you can redistribute it and/or modify it under the terms

// of the GNU General Public License as published by the Free Software

// Foundation; either version 2, or (at your option) any later

// version.

// This library is distributed in the hope that it will be useful, but

// WITHOUT ANY WARRANTY; without even the implied warranty of

// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

// General Public License for more details.

// You should have received a copy of the GNU General Public License

// along with this library; see the file COPYING.  If not, write to

// the Free Software Foundation, 59 Temple Place - Suite 330, Boston,

// MA 02111-1307, USA.

// As a special exception, you may use this file as part of a free

// software library without restriction.  Specifically, if other files

// instantiate templates or use macros or inline functions from this

// file, or you compile this file and link it with other files to

// produce an executable, this file does not by itself cause the

// resulting executable to be covered by the GNU General Public

// License.  This exception does not however invalidate any other

// reasons why the executable file might be covered by the GNU General

// Public License.

/** @file profile/impl/profiler_state.h

 *  @brief Global profiler state.

 */

// Written by Lixia Liu and Silvius Rus.

#ifndef _GLIBCXX_PROFILE_PROFILER_STATE_H

#define _GLIBCXX_PROFILE_PROFILER_STATE_H 1

namespace __gnu_profile

{

enum __state_type { __ON, __OFF, __INVALID };

_GLIBCXX_PROFILE_DEFINE_DATA(__state_type, __state, __INVALID);

inline bool __turn(__state_type __s)

{

  return (_GLIBCXX_PROFILE_DATA(__state)

          == __sync_val_compare_and_swap(&_GLIBCXX_PROFILE_DATA(__state),

                                         __INVALID, __s));

}

inline bool __turn_on()

{ return __turn(__ON); }

inline bool __turn_off()

{ return __turn(__OFF); }

inline bool __is_on()

{ return _GLIBCXX_PROFILE_DATA(__state) == __ON; }

inline bool __is_off()

{ return _GLIBCXX_PROFILE_DATA(__state) == __OFF; }

inline bool __is_invalid()

{ return _GLIBCXX_PROFILE_DATA(__state) == __INVALID; }

} // end namespace __gnu_profile

#endif /* _GLIBCXX_PROFILE_PROFILER_STATE_H */