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Name	Size	Permission	Date
backward	[ DIR ]	drwxr-xr-x	2026-02-03 15:08
bits	[ DIR ]	drwxr-xr-x	2026-02-03 15:08
debug	[ DIR ]	drwxr-xr-x	2026-02-03 15:08
decimal	[ DIR ]	drwxr-xr-x	2026-02-03 15:08
experimental	[ DIR ]	drwxr-xr-x	2026-02-03 15:08
ext	[ DIR ]	drwxr-xr-x	2026-02-03 15:08
parallel	[ DIR ]	drwxr-xr-x	2026-02-03 15:08
pstl	[ DIR ]	drwxr-xr-x	2026-02-03 15:08
tr1	[ DIR ]	drwxr-xr-x	2026-02-03 15:08
tr2	[ DIR ]	drwxr-xr-x	2026-02-03 15:08
x86_64-redhat-linux	[ DIR ]	drwxr-xr-x	2026-02-03 15:08
algorithm	3.31 KB	-rw-r--r--	2025-11-11 11:26
any	18.71 KB	-rw-r--r--	2025-11-11 11:26
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atomic	51.16 KB	-rw-r--r--	2025-11-11 11:26
barrier	7.87 KB	-rw-r--r--	2025-11-11 11:26
bit	14 KB	-rw-r--r--	2025-11-11 11:26
bitset	49.19 KB	-rw-r--r--	2025-11-11 11:26
cassert	1.61 KB	-rw-r--r--	2025-11-11 11:26
ccomplex	1.3 KB	-rw-r--r--	2025-11-11 11:26
cctype	2.34 KB	-rw-r--r--	2025-11-11 11:26
cerrno	1.73 KB	-rw-r--r--	2025-11-11 11:26
cfenv	2 KB	-rw-r--r--	2025-11-11 11:26
cfloat	1.84 KB	-rw-r--r--	2025-11-11 11:26
charconv	29.13 KB	-rw-r--r--	2025-11-11 11:26
chrono	94.45 KB	-rw-r--r--	2025-11-11 11:26
cinttypes	2.09 KB	-rw-r--r--	2025-11-11 11:26
ciso646	1.43 KB	-rw-r--r--	2025-11-11 11:26
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coroutine	9.39 KB	-rw-r--r--	2025-11-11 11:26
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cstdint	3.75 KB	-rw-r--r--	2025-11-11 11:26
cstdio	4.33 KB	-rw-r--r--	2025-11-11 11:26
cstdlib	6.66 KB	-rw-r--r--	2025-11-11 11:26
cstring	3.17 KB	-rw-r--r--	2025-11-11 11:26
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ctime	2.24 KB	-rw-r--r--	2025-11-11 11:26
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cwchar	6.39 KB	-rw-r--r--	2025-11-11 11:26
cwctype	2.73 KB	-rw-r--r--	2025-11-11 11:26
cxxabi.h	21.77 KB	-rw-r--r--	2025-11-11 11:26
deque	4.56 KB	-rw-r--r--	2025-11-11 11:26
exception	5.31 KB	-rw-r--r--	2025-11-11 11:26
execution	1.87 KB	-rw-r--r--	2025-11-11 11:26
expected	49.81 KB	-rw-r--r--	2025-11-11 11:26
fenv.h	1.96 KB	-rw-r--r--	2025-11-11 11:26
filesystem	1.72 KB	-rw-r--r--	2025-11-11 11:26
format	128.31 KB	-rw-r--r--	2025-11-11 11:26
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istream	35.52 KB	-rw-r--r--	2025-11-11 11:26
iterator	3.02 KB	-rw-r--r--	2025-11-11 11:26
latch	2.7 KB	-rw-r--r--	2025-11-11 11:26
limits	82.01 KB	-rw-r--r--	2025-11-11 11:26
list	3.86 KB	-rw-r--r--	2025-11-11 11:26
locale	1.5 KB	-rw-r--r--	2025-11-11 11:26
map	4.37 KB	-rw-r--r--	2025-11-11 11:26
math.h	4.47 KB	-rw-r--r--	2025-11-11 11:26
memory	5.26 KB	-rw-r--r--	2025-11-11 11:26
memory_resource	14.15 KB	-rw-r--r--	2025-11-11 11:26
mutex	26.99 KB	-rw-r--r--	2025-11-11 11:26
new	8.48 KB	-rw-r--r--	2025-11-11 11:26
numbers	6.91 KB	-rw-r--r--	2025-11-11 11:26
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optional	44.03 KB	-rw-r--r--	2025-11-11 11:26
ostream	30.45 KB	-rw-r--r--	2025-11-11 11:26
print	4.73 KB	-rw-r--r--	2025-11-11 11:26
queue	2.54 KB	-rw-r--r--	2025-11-11 11:26
random	1.63 KB	-rw-r--r--	2025-11-11 11:26
ranges	271.83 KB	-rw-r--r--	2025-11-11 11:26
ratio	22.26 KB	-rw-r--r--	2025-11-11 11:26
regex	3.16 KB	-rw-r--r--	2025-11-11 11:26
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semaphore	3.04 KB	-rw-r--r--	2025-11-11 11:26
set	4.16 KB	-rw-r--r--	2025-11-11 11:26
shared_mutex	24.6 KB	-rw-r--r--	2025-11-11 11:26
source_location	2.7 KB	-rw-r--r--	2025-11-11 11:26
span	14.12 KB	-rw-r--r--	2025-11-11 11:26
spanstream	12.2 KB	-rw-r--r--	2025-11-11 11:26
sstream	38.83 KB	-rw-r--r--	2025-11-11 11:26
stack	2.46 KB	-rw-r--r--	2025-11-11 11:26
stacktrace	21.82 KB	-rw-r--r--	2025-11-11 11:26
stdatomic.h	4.02 KB	-rw-r--r--	2025-11-11 11:26
stdexcept	9.65 KB	-rw-r--r--	2025-11-11 11:26
stdfloat	1.72 KB	-rw-r--r--	2025-11-11 11:26
stdlib.h	2.25 KB	-rw-r--r--	2025-11-11 11:26
stop_token	15.72 KB	-rw-r--r--	2025-11-11 11:26
streambuf	29.24 KB	-rw-r--r--	2025-11-11 11:26
string	4.23 KB	-rw-r--r--	2025-11-11 11:26
string_view	27.46 KB	-rw-r--r--	2025-11-11 11:26
syncstream	8.18 KB	-rw-r--r--	2025-11-11 11:26
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text_encoding	16.26 KB	-rw-r--r--	2025-11-11 11:26
tgmath.h	1.33 KB	-rw-r--r--	2025-11-11 11:26
thread	9.77 KB	-rw-r--r--	2025-11-11 11:26
tuple	99.67 KB	-rw-r--r--	2025-11-11 11:26
type_traits	118.15 KB	-rw-r--r--	2025-11-11 11:26
typeindex	3.43 KB	-rw-r--r--	2025-11-11 11:26
typeinfo	8.1 KB	-rw-r--r--	2025-11-11 11:26
unordered_map	3.69 KB	-rw-r--r--	2025-11-11 11:26
unordered_set	3.48 KB	-rw-r--r--	2025-11-11 11:26
utility	7.38 KB	-rw-r--r--	2025-11-11 11:26
valarray	40.2 KB	-rw-r--r--	2025-11-11 11:26
variant	64.81 KB	-rw-r--r--	2025-11-11 11:26
vector	4.98 KB	-rw-r--r--	2025-11-11 11:26
version	1.42 KB	-rw-r--r--	2025-11-11 11:26

Rename

// <coroutine> -*- C++ -*-

// Copyright (C) 2019-2024 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/coroutine
 *  This is a Standard C++ Library header.
 */

#ifndef _GLIBCXX_COROUTINE
#define _GLIBCXX_COROUTINE 1

#pragma GCC system_header

#define __glibcxx_want_coroutine
#include <bits/version.h>

#if !__cpp_impl_coroutine
# error "the <coroutine> header requires -fcoroutines"
#endif

#ifdef __cpp_lib_coroutine // C++ >= 14 && impl_coroutine

#include <type_traits>
#if __cplusplus > 201703L
# include <compare>
#endif

#if !defined __cpp_lib_three_way_comparison
# include <bits/stl_function.h> // for std::less
#endif

/**
 * @defgroup coroutines Coroutines
 *
 * Components for supporting coroutine implementations.
 *
 * @since C++20 (and since C++14 as a libstdc++ extension)
 */

namespace std _GLIBCXX_VISIBILITY (default)
{
_GLIBCXX_BEGIN_NAMESPACE_VERSION

inline namespace __n4861 {

// C++20 17.12.2 coroutine traits
  /// [coroutine.traits]
  /// [coroutine.traits.primary]
  /// If _Result::promise_type is valid and denotes a type then the traits
  /// have a single publicly accessible member, otherwise they are empty.
  template <typename _Result, typename... _ArgTypes>
    struct coroutine_traits;

template <typename _Result, typename = void>
   struct __coroutine_traits_impl {};

template <typename _Result>
#if __cpp_concepts
    requires requires { typename _Result::promise_type; }
    struct __coroutine_traits_impl<_Result, void>
#else
    struct __coroutine_traits_impl<_Result,
				   __void_t<typename _Result::promise_type>>
#endif
    {
      using promise_type = typename _Result::promise_type;
    };

template <typename _Result, typename... _ArgTypes>
    struct coroutine_traits : __coroutine_traits_impl<_Result> {};

// C++20 17.12.3 Class template coroutine_handle
  /// [coroutine.handle]
  template <typename _Promise = void>
    struct coroutine_handle;

template <> struct
    coroutine_handle<void>
    {
    public:
      // [coroutine.handle.con], construct/reset
      constexpr coroutine_handle() noexcept : _M_fr_ptr(nullptr) {}

constexpr coroutine_handle(std::nullptr_t __h) noexcept
	: _M_fr_ptr(__h)
      {}

coroutine_handle& operator=(std::nullptr_t) noexcept
      {
	_M_fr_ptr = nullptr;
	return *this;
      }

public:
      // [coroutine.handle.export.import], export/import
      constexpr void* address() const noexcept { return _M_fr_ptr; }

constexpr static coroutine_handle from_address(void* __a) noexcept
      {
	coroutine_handle __self;
	__self._M_fr_ptr = __a;
	return __self;
      }

public:
      // [coroutine.handle.observers], observers
      constexpr explicit operator bool() const noexcept
      {
	return bool(_M_fr_ptr);
      }

bool done() const noexcept { return __builtin_coro_done(_M_fr_ptr); }

// [coroutine.handle.resumption], resumption
      void operator()() const { resume(); }

void resume() const { __builtin_coro_resume(_M_fr_ptr); }

void destroy() const { __builtin_coro_destroy(_M_fr_ptr); }

protected:
      void* _M_fr_ptr;
  };

// [coroutine.handle.compare], comparison operators

constexpr bool
  operator==(coroutine_handle<> __a, coroutine_handle<> __b) noexcept
  {
    return __a.address() == __b.address();
  }

#ifdef __cpp_lib_three_way_comparison
  constexpr strong_ordering
  operator<=>(coroutine_handle<> __a, coroutine_handle<> __b) noexcept
  {
    return std::compare_three_way()(__a.address(), __b.address());
  }
#else
  // These are to enable operation with std=c++14,17.
  constexpr bool
  operator!=(coroutine_handle<> __a, coroutine_handle<> __b) noexcept
  {
    return !(__a == __b);
  }

constexpr bool
  operator<(coroutine_handle<> __a, coroutine_handle<> __b) noexcept
  {
    return less<void*>()(__a.address(), __b.address());
  }

constexpr bool
  operator>(coroutine_handle<> __a, coroutine_handle<> __b) noexcept
  {
    return __b < __a;
  }

constexpr bool
  operator<=(coroutine_handle<> __a, coroutine_handle<> __b) noexcept
  {
    return !(__a > __b);
  }

constexpr bool
  operator>=(coroutine_handle<> __a, coroutine_handle<> __b) noexcept
  {
    return !(__a < __b);
  }
#endif

template <typename _Promise>
    struct coroutine_handle
    {
      // [coroutine.handle.con], construct/reset

constexpr coroutine_handle() noexcept { }

constexpr coroutine_handle(nullptr_t) noexcept { }

static coroutine_handle
      from_promise(_Promise& __p)
      {
	coroutine_handle __self;
	__self._M_fr_ptr
	  = __builtin_coro_promise((char*) &__p, __alignof(_Promise), true);
	return __self;
      }

coroutine_handle& operator=(nullptr_t) noexcept
      {
	_M_fr_ptr = nullptr;
	return *this;
      }

// [coroutine.handle.export.import], export/import

constexpr void* address() const noexcept { return _M_fr_ptr; }

constexpr static coroutine_handle from_address(void* __a) noexcept
      {
	coroutine_handle __self;
	__self._M_fr_ptr = __a;
	return __self;
      }

// [coroutine.handle.conv], conversion
      constexpr operator coroutine_handle<>() const noexcept
      { return coroutine_handle<>::from_address(address()); }

// [coroutine.handle.observers], observers
      constexpr explicit operator bool() const noexcept
      {
	return bool(_M_fr_ptr);
      }

bool done() const noexcept { return __builtin_coro_done(_M_fr_ptr); }

// [coroutine.handle.resumption], resumption
      void operator()() const { resume(); }

void resume() const { __builtin_coro_resume(_M_fr_ptr); }

void destroy() const { __builtin_coro_destroy(_M_fr_ptr); }

// [coroutine.handle.promise], promise access
      _Promise& promise() const
      {
	void* __t
	  = __builtin_coro_promise (_M_fr_ptr, __alignof(_Promise), false);
	return *static_cast<_Promise*>(__t);
      }

private:
      void* _M_fr_ptr = nullptr;
    };

/// [coroutine.noop]
  struct noop_coroutine_promise
  {
  };

// 17.12.4.1 Class noop_coroutine_promise
  /// [coroutine.promise.noop]
  template <>
    struct coroutine_handle<noop_coroutine_promise>
    {
      // _GLIBCXX_RESOLVE_LIB_DEFECTS
      // 3460. Unimplementable noop_coroutine_handle guarantees
      // [coroutine.handle.noop.conv], conversion
      constexpr operator coroutine_handle<>() const noexcept
      { return coroutine_handle<>::from_address(address()); }

// [coroutine.handle.noop.observers], observers
      constexpr explicit operator bool() const noexcept { return true; }

constexpr bool done() const noexcept { return false; }

// [coroutine.handle.noop.resumption], resumption
      void operator()() const noexcept {}

void resume() const noexcept {}

void destroy() const noexcept {}

// [coroutine.handle.noop.promise], promise access
      noop_coroutine_promise& promise() const noexcept
      { return _S_fr.__p; }

// [coroutine.handle.noop.address], address
      constexpr void* address() const noexcept { return _M_fr_ptr; }

private:
      friend coroutine_handle noop_coroutine() noexcept;

struct __frame
      {
	static void __dummy_resume_destroy() { }

void (*__r)() = __dummy_resume_destroy;
	void (*__d)() = __dummy_resume_destroy;
	struct noop_coroutine_promise __p;
      };

static __frame _S_fr;

explicit coroutine_handle() noexcept = default;

void* _M_fr_ptr = &_S_fr;
    };

using noop_coroutine_handle = coroutine_handle<noop_coroutine_promise>;

inline noop_coroutine_handle::__frame
  noop_coroutine_handle::_S_fr{};

inline noop_coroutine_handle noop_coroutine() noexcept
  {
    return noop_coroutine_handle();
  }

// 17.12.5 Trivial awaitables
  /// [coroutine.trivial.awaitables]
  struct suspend_always
  {
    constexpr bool await_ready() const noexcept { return false; }

constexpr void await_suspend(coroutine_handle<>) const noexcept {}

constexpr void await_resume() const noexcept {}
  };

struct suspend_never
  {
    constexpr bool await_ready() const noexcept { return true; }

constexpr void await_suspend(coroutine_handle<>) const noexcept {}

constexpr void await_resume() const noexcept {}
  };

} // namespace __n4861

template<typename _Tp> struct hash;

template<typename _Promise>
    struct hash<coroutine_handle<_Promise>>
    {
      size_t
      operator()(const coroutine_handle<_Promise>& __h) const noexcept
      {
	return reinterpret_cast<size_t>(__h.address());
      }
    };

_GLIBCXX_END_NAMESPACE_VERSION
} // namespace std

#endif // __cpp_lib_coroutine

#endif // _GLIBCXX_COROUTINE