1// -*- C++ -*- 2// 3// Copyright (C) 2009-2013 Free Software Foundation, Inc. 4// 5// This file is part of the GNU ISO C++ Library. This library is free 6// software; you can redistribute it and/or modify it under the 7// terms of the GNU General Public License as published by the 8// Free Software Foundation; either version 3, or (at your option) 9// any later version. 10// 11// This library is distributed in the hope that it will be useful, 12// but WITHOUT ANY WARRANTY; without even the implied warranty of 13// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14// GNU General Public License for more details. 15 16// Under Section 7 of GPL version 3, you are granted additional 17// permissions described in the GCC Runtime Library Exception, version 18// 3.1, as published by the Free Software Foundation. 19 20// You should have received a copy of the GNU General Public License along 21// with this library; see the file COPYING3. If not see 22// <http://www.gnu.org/licenses/>. 23 24/** @file profile/impl/profiler_state.h 25 * @brief Global profiler state. 26 */ 27 28// Written by Lixia Liu and Silvius Rus. 29 30#ifndef _GLIBCXX_PROFILE_PROFILER_STATE_H 31#define _GLIBCXX_PROFILE_PROFILER_STATE_H 1 32 33namespace __gnu_profile 34{ 35 enum __state_type { __ON, __OFF, __INVALID }; 36 37 _GLIBCXX_PROFILE_DEFINE_DATA(__state_type, __state, __INVALID); 38 39 inline bool 40 __turn(__state_type __s) 41 { 42 __state_type inv(__INVALID); 43 return __atomic_compare_exchange_n(&_GLIBCXX_PROFILE_DATA(__state), 44 &inv, __s, false, __ATOMIC_ACQ_REL, 45 __ATOMIC_RELAXED); 46 } 47 48 inline bool 49 __turn_on() 50 { return __turn(__ON); } 51 52 inline bool 53 __turn_off() 54 { return __turn(__OFF); } 55 56 inline bool 57 __is_on() 58 { return _GLIBCXX_PROFILE_DATA(__state) == __ON; } 59 60 inline bool 61 __is_off() 62 { return _GLIBCXX_PROFILE_DATA(__state) == __OFF; } 63 64 inline bool 65 __is_invalid() 66 { return _GLIBCXX_PROFILE_DATA(__state) == __INVALID; } 67 68} // end namespace __gnu_profile 69#endif /* _GLIBCXX_PROFILE_PROFILER_STATE_H */ 70