Gecko [ c.stage.kornherr.net ]

Name	Size	Permission	Date
backward	[ DIR ]	drwxr-xr-x	2026-04-26 19:49
bits	[ DIR ]	drwxr-xr-x	2026-04-26 19:49
debug	[ DIR ]	drwxr-xr-x	2026-04-26 19:49
decimal	[ DIR ]	drwxr-xr-x	2026-04-26 19:49
experimental	[ DIR ]	drwxr-xr-x	2026-04-26 19:49
ext	[ DIR ]	drwxr-xr-x	2026-04-26 19:49
parallel	[ DIR ]	drwxr-xr-x	2026-04-26 19:49
pstl	[ DIR ]	drwxr-xr-x	2026-04-26 19:49
tr1	[ DIR ]	drwxr-xr-x	2026-04-26 19:49
tr2	[ DIR ]	drwxr-xr-x	2026-04-26 19:49
algorithm	2.97 KB	-rw-r--r--	2025-12-18 20:59
any	18.38 KB	-rw-r--r--	2025-12-18 20:59
array	15.21 KB	-rw-r--r--	2025-12-18 20:59
atomic	50.36 KB	-rw-r--r--	2025-12-18 20:59
barrier	7.89 KB	-rw-r--r--	2025-12-18 20:59
bit	14.04 KB	-rw-r--r--	2025-12-18 20:59
bitset	49.14 KB	-rw-r--r--	2025-12-18 20:59
cassert	1.61 KB	-rw-r--r--	2025-12-18 20:59
ccomplex	1.3 KB	-rw-r--r--	2025-12-18 20:59
cctype	2.35 KB	-rw-r--r--	2025-12-18 20:59
cerrno	1.73 KB	-rw-r--r--	2025-12-18 20:59
cfenv	2 KB	-rw-r--r--	2025-12-18 20:59
cfloat	1.84 KB	-rw-r--r--	2025-12-18 20:59
charconv	29.52 KB	-rw-r--r--	2025-12-18 20:59
chrono	94.76 KB	-rw-r--r--	2025-12-18 20:59
cinttypes	2.11 KB	-rw-r--r--	2025-12-18 20:59
ciso646	1.43 KB	-rw-r--r--	2025-12-18 20:59
climits	1.87 KB	-rw-r--r--	2025-12-18 20:59
clocale	1.86 KB	-rw-r--r--	2025-12-18 20:59
cmath	91.77 KB	-rw-r--r--	2025-12-18 20:59
codecvt	5.15 KB	-rw-r--r--	2025-12-18 20:59
compare	36.91 KB	-rw-r--r--	2025-12-18 20:59
complex	74.66 KB	-rw-r--r--	2025-12-18 20:59
complex.h	1.56 KB	-rw-r--r--	2025-12-18 20:59
concepts	12.51 KB	-rw-r--r--	2025-12-18 20:59
condition_variable	12.59 KB	-rw-r--r--	2025-12-18 20:59
coroutine	9.44 KB	-rw-r--r--	2025-12-18 20:59
csetjmp	1.9 KB	-rw-r--r--	2025-12-18 20:59
csignal	1.81 KB	-rw-r--r--	2025-12-18 20:59
cstdalign	1.37 KB	-rw-r--r--	2025-12-18 20:59
cstdarg	1.82 KB	-rw-r--r--	2025-12-18 20:59
cstdbool	1.37 KB	-rw-r--r--	2025-12-18 20:59
cstddef	6.5 KB	-rw-r--r--	2025-12-18 20:59
cstdint	3.76 KB	-rw-r--r--	2025-12-18 20:59
cstdio	4.33 KB	-rw-r--r--	2025-12-18 20:59
cstdlib	6.38 KB	-rw-r--r--	2025-12-18 20:59
cstring	3.08 KB	-rw-r--r--	2025-12-18 20:59
ctgmath	1.33 KB	-rw-r--r--	2025-12-18 20:59
ctime	2.24 KB	-rw-r--r--	2025-12-18 20:59
cuchar	2.84 KB	-rw-r--r--	2025-12-18 20:59
cwchar	6.39 KB	-rw-r--r--	2025-12-18 20:59
cwctype	2.73 KB	-rw-r--r--	2025-12-18 20:59
cxxabi.h	21.76 KB	-rw-r--r--	2025-12-18 20:59
deque	4.39 KB	-rw-r--r--	2025-12-18 20:59
exception	5.28 KB	-rw-r--r--	2025-12-18 20:59
execution	1.83 KB	-rw-r--r--	2025-12-18 20:59
expected	49.72 KB	-rw-r--r--	2025-12-18 20:59
fenv.h	1.97 KB	-rw-r--r--	2025-12-18 20:59
filesystem	1.66 KB	-rw-r--r--	2025-12-18 20:59
format	113.64 KB	-rw-r--r--	2025-12-18 20:59
forward_list	2.65 KB	-rw-r--r--	2025-12-18 20:59
fstream	39.77 KB	-rw-r--r--	2025-12-18 20:59
functional	45.45 KB	-rw-r--r--	2025-12-18 20:59
future	51.89 KB	-rw-r--r--	2025-12-18 20:59
initializer_list	2.93 KB	-rw-r--r--	2025-12-18 20:59
iomanip	16.22 KB	-rw-r--r--	2025-12-18 20:59
ios	1.61 KB	-rw-r--r--	2025-12-18 20:59
iosfwd	8.21 KB	-rw-r--r--	2025-12-18 20:59
iostream	3 KB	-rw-r--r--	2025-12-18 20:59
istream	35.47 KB	-rw-r--r--	2025-12-18 20:59
iterator	2.76 KB	-rw-r--r--	2025-12-18 20:59
latch	2.72 KB	-rw-r--r--	2025-12-18 20:59
limits	76.4 KB	-rw-r--r--	2025-12-18 20:59
list	3.6 KB	-rw-r--r--	2025-12-18 20:59
locale	1.5 KB	-rw-r--r--	2025-12-18 20:59
map	4.05 KB	-rw-r--r--	2025-12-18 20:59
math.h	4.47 KB	-rw-r--r--	2025-12-18 20:59
memory	4.82 KB	-rw-r--r--	2025-12-18 20:59
memory_resource	14.14 KB	-rw-r--r--	2025-12-18 20:59
mutex	26.63 KB	-rw-r--r--	2025-12-18 20:59
new	8.45 KB	-rw-r--r--	2025-12-18 20:59
numbers	6.87 KB	-rw-r--r--	2025-12-18 20:59
numeric	25.38 KB	-rw-r--r--	2025-12-18 20:59
optional	44.1 KB	-rw-r--r--	2025-12-18 20:59
ostream	26.56 KB	-rw-r--r--	2025-12-18 20:59
queue	2.46 KB	-rw-r--r--	2025-12-18 20:59
random	1.71 KB	-rw-r--r--	2025-12-18 20:59
ranges	253.81 KB	-rw-r--r--	2025-12-18 20:59
ratio	20.97 KB	-rw-r--r--	2025-12-18 20:59
regex	3.08 KB	-rw-r--r--	2025-12-18 20:59
scoped_allocator	17.33 KB	-rw-r--r--	2025-12-18 20:59
semaphore	2.98 KB	-rw-r--r--	2025-12-18 20:59
set	3.91 KB	-rw-r--r--	2025-12-18 20:59
shared_mutex	24.52 KB	-rw-r--r--	2025-12-18 20:59
source_location	2.68 KB	-rw-r--r--	2025-12-18 20:59
span	13.82 KB	-rw-r--r--	2025-12-18 20:59
spanstream	12.17 KB	-rw-r--r--	2025-12-18 20:59
sstream	38.83 KB	-rw-r--r--	2025-12-18 20:59
stack	2.38 KB	-rw-r--r--	2025-12-18 20:59
stacktrace	21.37 KB	-rw-r--r--	2025-12-18 20:59
stdatomic.h	3.97 KB	-rw-r--r--	2025-12-18 20:59
stdexcept	9.65 KB	-rw-r--r--	2025-12-18 20:59
stdfloat	1.72 KB	-rw-r--r--	2025-12-18 20:59
stdlib.h	2.25 KB	-rw-r--r--	2025-12-18 20:59
stop_token	15.7 KB	-rw-r--r--	2025-12-18 20:59
streambuf	29.24 KB	-rw-r--r--	2025-12-18 20:59
string	3.87 KB	-rw-r--r--	2025-12-18 20:59
string_view	27.33 KB	-rw-r--r--	2025-12-18 20:59
syncstream	8.17 KB	-rw-r--r--	2025-12-18 20:59
system_error	17.96 KB	-rw-r--r--	2025-12-18 20:59
tgmath.h	1.33 KB	-rw-r--r--	2025-12-18 20:59
thread	7.33 KB	-rw-r--r--	2025-12-18 20:59
tuple	76.49 KB	-rw-r--r--	2025-12-18 20:59
type_traits	112.36 KB	-rw-r--r--	2025-12-18 20:59
typeindex	3.43 KB	-rw-r--r--	2025-12-18 20:59
typeinfo	8.11 KB	-rw-r--r--	2025-12-18 20:59
unordered_map	3.37 KB	-rw-r--r--	2025-12-18 20:59
unordered_set	3.23 KB	-rw-r--r--	2025-12-18 20:59
utility	6.98 KB	-rw-r--r--	2025-12-18 20:59
valarray	40.2 KB	-rw-r--r--	2025-12-18 20:59
variant	64.72 KB	-rw-r--r--	2025-12-18 20:59
vector	4.72 KB	-rw-r--r--	2025-12-18 20:59
version	12.32 KB	-rw-r--r--	2025-12-18 20:59

Rename

// <latch> -*- C++ -*-

// Copyright (C) 2020-2023 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 include/latch
 *  This is a Standard C++ Library header.
 */

#ifndef _GLIBCXX_LATCH
#define _GLIBCXX_LATCH 1

#pragma GCC system_header

#include <bits/requires_hosted.h> // concurrency

#if __cplusplus > 201703L

#include <bits/atomic_base.h>
#include <ext/numeric_traits.h>

#if __cpp_lib_atomic_wait
namespace std _GLIBCXX_VISIBILITY(default)
{
_GLIBCXX_BEGIN_NAMESPACE_VERSION

#define __cpp_lib_latch 201907L

class latch
  {
  public:
    static constexpr ptrdiff_t
    max() noexcept
    { return __gnu_cxx::__int_traits<__detail::__platform_wait_t>::__max; }

constexpr explicit latch(ptrdiff_t __expected) noexcept
      : _M_a(__expected) { }

~latch() = default;
    latch(const latch&) = delete;
    latch& operator=(const latch&) = delete;

_GLIBCXX_ALWAYS_INLINE void
    count_down(ptrdiff_t __update = 1)
    {
      auto const __old = __atomic_impl::fetch_sub(&_M_a,
				    __update, memory_order::release);
      if (__old == __update)
	__atomic_impl::notify_all(&_M_a);
    }

_GLIBCXX_ALWAYS_INLINE bool
    try_wait() const noexcept
    { return __atomic_impl::load(&_M_a, memory_order::acquire) == 0; }

_GLIBCXX_ALWAYS_INLINE void
    wait() const noexcept
    {
      auto const __pred = [this] { return this->try_wait(); };
      std::__atomic_wait_address(&_M_a, __pred);
    }

_GLIBCXX_ALWAYS_INLINE void
    arrive_and_wait(ptrdiff_t __update = 1) noexcept
    {
      count_down(__update);
      wait();
    }

private:
    alignas(__alignof__(__detail::__platform_wait_t)) __detail::__platform_wait_t _M_a;
  };
_GLIBCXX_END_NAMESPACE_VERSION
} // namespace
#endif // __cpp_lib_atomic_wait
#endif // __cplusplus > 201703L
#endif // _GLIBCXX_LATCH