1 // -*- C++ -*- 2 // 3 // Copyright (C) 2009-2019 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 33 namespace __gnu_profile 34 { 35 enum __state_type { __ON, __OFF, __INVALID }; 36 37 _GLIBCXX_PROFILE_DEFINE_DATA(__state_type, __state, __INVALID); 38 39 inline bool __turn(__state_type __s)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 __turn_on()49 __turn_on() 50 { return __turn(__ON); } 51 52 inline bool __turn_off()53 __turn_off() 54 { return __turn(__OFF); } 55 56 inline bool __is_on()57 __is_on() 58 { return _GLIBCXX_PROFILE_DATA(__state) == __ON; } 59 60 inline bool __is_off()61 __is_off() 62 { return _GLIBCXX_PROFILE_DATA(__state) == __OFF; } 63 64 inline bool __is_invalid()65 __is_invalid() 66 { return _GLIBCXX_PROFILE_DATA(__state) == __INVALID; } 67 68 } // end namespace __gnu_profile 69 #endif /* _GLIBCXX_PROFILE_PROFILER_STATE_H */ 70