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+// -*- C++ -*-
+//
+// Copyright (C) 2009-2014 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 3, 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.
+
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3. If not see
+// <http://www.gnu.org/licenses/>.
+
+/** @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)
+ {
+ __state_type inv(__INVALID);
+ return __atomic_compare_exchange_n(&_GLIBCXX_PROFILE_DATA(__state),
+ &inv, __s, false, __ATOMIC_ACQ_REL,
+ __ATOMIC_RELAXED);
+ }
+
+ 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 */