1  // -*- C++ -*- header.
       2  
       3  // Copyright (C) 2008-2023 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 and
      21  // a copy of the GCC Runtime Library Exception along with this program;
      22  // see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
      23  // <http://www.gnu.org/licenses/>.
      24  
      25  /** @file bits/atomic_lockfree_defines.h
      26   *  This is an internal header file, included by other library headers.
      27   *  Do not attempt to use it directly. @headername{atomic}
      28   */
      29  
      30  #ifndef _GLIBCXX_ATOMIC_LOCK_FREE_H
      31  #define _GLIBCXX_ATOMIC_LOCK_FREE_H 1
      32  
      33  #pragma GCC system_header
      34  
      35  /**
      36   * @addtogroup atomics
      37   * @{
      38   */
      39  
      40  /**
      41   * Lock-free property.
      42   *
      43   * 0 indicates that the types are never lock-free.
      44   * 1 indicates that the types are sometimes lock-free.
      45   * 2 indicates that the types are always lock-free.
      46   */
      47  
      48  #if __cplusplus >= 201103L
      49  #define ATOMIC_BOOL_LOCK_FREE		__GCC_ATOMIC_BOOL_LOCK_FREE
      50  #define ATOMIC_CHAR_LOCK_FREE		__GCC_ATOMIC_CHAR_LOCK_FREE
      51  #define ATOMIC_WCHAR_T_LOCK_FREE	__GCC_ATOMIC_WCHAR_T_LOCK_FREE
      52  #ifdef _GLIBCXX_USE_CHAR8_T
      53  #define ATOMIC_CHAR8_T_LOCK_FREE	__GCC_ATOMIC_CHAR8_T_LOCK_FREE
      54  #endif
      55  #define ATOMIC_CHAR16_T_LOCK_FREE	__GCC_ATOMIC_CHAR16_T_LOCK_FREE
      56  #define ATOMIC_CHAR32_T_LOCK_FREE	__GCC_ATOMIC_CHAR32_T_LOCK_FREE
      57  #define ATOMIC_SHORT_LOCK_FREE		__GCC_ATOMIC_SHORT_LOCK_FREE
      58  #define ATOMIC_INT_LOCK_FREE		__GCC_ATOMIC_INT_LOCK_FREE
      59  #define ATOMIC_LONG_LOCK_FREE		__GCC_ATOMIC_LONG_LOCK_FREE
      60  #define ATOMIC_LLONG_LOCK_FREE		__GCC_ATOMIC_LLONG_LOCK_FREE
      61  #define ATOMIC_POINTER_LOCK_FREE	__GCC_ATOMIC_POINTER_LOCK_FREE
      62  #endif
      63  
      64  /// @} group atomics
      65  
      66  #endif