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Name	Size	Permission	Date
pb_ds	[ DIR ]	drwxr-xr-x	2025-08-15 18:07
algorithm	18.8 KB	-rw-r--r--	2025-02-12 13:06
aligned_buffer.h	3.88 KB	-rw-r--r--	2025-02-12 13:06
alloc_traits.h	6 KB	-rw-r--r--	2025-02-12 13:06
atomicity.h	3.7 KB	-rw-r--r--	2025-02-12 13:06
bitmap_allocator.h	31.45 KB	-rw-r--r--	2025-02-12 13:06
cast.h	4.34 KB	-rw-r--r--	2025-02-12 13:06
cmath	6.42 KB	-rw-r--r--	2025-02-12 13:06
codecvt_specializations.h	15.97 KB	-rw-r--r--	2025-02-12 13:06
concurrence.h	7.37 KB	-rw-r--r--	2025-02-12 13:06
debug_allocator.h	5.75 KB	-rw-r--r--	2025-02-12 13:06
enc_filebuf.h	2.19 KB	-rw-r--r--	2025-02-12 13:06
extptr_allocator.h	6.24 KB	-rw-r--r--	2025-02-12 13:06
functional	13.84 KB	-rw-r--r--	2025-02-12 13:06
hash_map	17.4 KB	-rw-r--r--	2025-02-12 13:06
hash_set	16.92 KB	-rw-r--r--	2025-02-12 13:06
iterator	3.94 KB	-rw-r--r--	2025-02-12 13:06
malloc_allocator.h	5.99 KB	-rw-r--r--	2025-02-12 13:06
memory	7 KB	-rw-r--r--	2025-02-12 13:06
mt_allocator.h	23.07 KB	-rw-r--r--	2025-02-12 13:06
new_allocator.h	5.91 KB	-rw-r--r--	2025-02-12 13:06
numeric	4.63 KB	-rw-r--r--	2025-02-12 13:06
numeric_traits.h	7.99 KB	-rw-r--r--	2025-02-12 13:06
pod_char_traits.h	5.43 KB	-rw-r--r--	2025-02-12 13:06
pointer.h	20 KB	-rw-r--r--	2025-02-12 13:06
pool_allocator.h	8.75 KB	-rw-r--r--	2025-02-12 13:06
random	110.53 KB	-rw-r--r--	2025-02-12 13:06
random.tcc	58.92 KB	-rw-r--r--	2025-02-12 13:06
rb_tree	3.2 KB	-rw-r--r--	2025-02-12 13:06
rc_string_base.h	23.24 KB	-rw-r--r--	2025-02-12 13:06
rope	86.79 KB	-rw-r--r--	2025-02-12 13:06
ropeimpl.h	47.76 KB	-rw-r--r--	2025-02-12 13:06
slist	29.2 KB	-rw-r--r--	2025-02-12 13:06
sso_string_base.h	16.01 KB	-rw-r--r--	2025-02-12 13:06
stdio_filebuf.h	5.55 KB	-rw-r--r--	2025-02-12 13:06
stdio_sync_filebuf.h	8.56 KB	-rw-r--r--	2025-02-12 13:06
string_conversions.h	3.51 KB	-rw-r--r--	2025-02-12 13:06
throw_allocator.h	25.26 KB	-rw-r--r--	2025-02-12 13:06
type_traits.h	5.94 KB	-rw-r--r--	2025-02-12 13:06
typelist.h	16.09 KB	-rw-r--r--	2025-02-12 13:06
vstring.h	108.03 KB	-rw-r--r--	2025-02-12 13:06
vstring.tcc	23.06 KB	-rw-r--r--	2025-02-12 13:06
vstring_fwd.h	3.1 KB	-rw-r--r--	2025-02-12 13:06
vstring_util.h	5.75 KB	-rw-r--r--	2025-02-12 13:06

Rename

// Support for atomic operations -*- C++ -*-

// Copyright (C) 2004-2021 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 and
// a copy of the GCC Runtime Library Exception along with this program;
// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
// <http://www.gnu.org/licenses/>.

/** @file ext/atomicity.h
 *  This file is a GNU extension to the Standard C++ Library.
 */

#ifndef _GLIBCXX_ATOMICITY_H
#define _GLIBCXX_ATOMICITY_H	1

#pragma GCC system_header

#include <bits/c++config.h>
#include <bits/gthr.h>
#include <bits/atomic_word.h>
#if __has_include(<sys/single_threaded.h>)
# include <sys/single_threaded.h>
#endif

namespace __gnu_cxx _GLIBCXX_VISIBILITY(default)
{
_GLIBCXX_BEGIN_NAMESPACE_VERSION

__attribute__((__always_inline__))
  inline bool
  __is_single_threaded() _GLIBCXX_NOTHROW
  {
#ifndef __GTHREADS
    return true;
#elif __has_include(<sys/single_threaded.h>)
    return ::__libc_single_threaded;
#else
    return !__gthread_active_p();
#endif
  }

// Functions for portable atomic access.
  // To abstract locking primitives across all thread policies, use:
  // __exchange_and_add_dispatch
  // __atomic_add_dispatch
#ifdef _GLIBCXX_ATOMIC_BUILTINS
  inline _Atomic_word
  __attribute__((__always_inline__))
  __exchange_and_add(volatile _Atomic_word* __mem, int __val)
  { return __atomic_fetch_add(__mem, __val, __ATOMIC_ACQ_REL); }

inline void
  __attribute__((__always_inline__))
  __atomic_add(volatile _Atomic_word* __mem, int __val)
  { __atomic_fetch_add(__mem, __val, __ATOMIC_ACQ_REL); }
#else
  _Atomic_word
  __exchange_and_add(volatile _Atomic_word*, int) _GLIBCXX_NOTHROW;

void
  __atomic_add(volatile _Atomic_word*, int) _GLIBCXX_NOTHROW;
#endif

inline _Atomic_word
  __attribute__((__always_inline__))
  __exchange_and_add_single(_Atomic_word* __mem, int __val)
  {
    _Atomic_word __result = *__mem;
    *__mem += __val;
    return __result;
  }

inline void
  __attribute__((__always_inline__))
  __atomic_add_single(_Atomic_word* __mem, int __val)
  { *__mem += __val; }

inline _Atomic_word
  __attribute__ ((__always_inline__))
  __exchange_and_add_dispatch(_Atomic_word* __mem, int __val)
  {
    if (__is_single_threaded())
      return __exchange_and_add_single(__mem, __val);
    else
      return __exchange_and_add(__mem, __val);
  }

inline void
  __attribute__ ((__always_inline__))
  __atomic_add_dispatch(_Atomic_word* __mem, int __val)
  {
    if (__is_single_threaded())
      __atomic_add_single(__mem, __val);
    else
      __atomic_add(__mem, __val);
  }

_GLIBCXX_END_NAMESPACE_VERSION
} // namespace

// Even if the CPU doesn't need a memory barrier, we need to ensure
// that the compiler doesn't reorder memory accesses across the
// barriers.
#ifndef _GLIBCXX_READ_MEM_BARRIER
#define _GLIBCXX_READ_MEM_BARRIER __atomic_thread_fence (__ATOMIC_ACQUIRE)
#endif
#ifndef _GLIBCXX_WRITE_MEM_BARRIER
#define _GLIBCXX_WRITE_MEM_BARRIER __atomic_thread_fence (__ATOMIC_RELEASE)
#endif

#endif