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// Compatibility symbols for previous versions, C++0x bits -*- C++ -*-
// Copyright (C) 2009-2017 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/>.
#include <bits/c++config.h>
#if defined(_GLIBCXX_SHARED)
#define _GLIBCXX_ASYNC_ABI_COMPAT
#endif
#include <future>
#include <mutex>
#include <functional>
#if __cplusplus < 201103L
# error "compatibility-thread-c++0x.cc must be compiled with -std=gnu++0x"
#endif
#define _GLIBCXX_ASM_SYMVER(cur, old, version) \
asm (".symver " #cur "," #old "@@@" #version);
// XXX GLIBCXX_ABI Deprecated
// gcc-4.6.0
// <future> export changes
#if defined(_GLIBCXX_SYMVER_GNU) && defined(_GLIBCXX_SHARED) \
&& defined(_GLIBCXX_HAVE_AS_SYMVER_DIRECTIVE) \
&& defined(_GLIBCXX_HAVE_SYMVER_SYMBOL_RENAMING_RUNTIME_SUPPORT)
namespace __gnu_cxx _GLIBCXX_VISIBILITY(default)
{
const std::error_category* future_category = &std::future_category();
}
_GLIBCXX_ASM_SYMVER(_ZN9__gnu_cxx15future_categoryE, _ZSt15future_category, GLIBCXX_3.4.14)
#endif
// XXX GLIBCXX_ABI Deprecated
// gcc-4.6.0
// <mutex> export changes
#if defined(_GLIBCXX_HAS_GTHREADS) && defined(_GLIBCXX_USE_C99_STDINT_TR1)
#if defined(_GLIBCXX_SYMVER_GNU) && defined(_GLIBCXX_SHARED) \
&& defined(_GLIBCXX_HAVE_AS_SYMVER_DIRECTIVE) \
&& defined(_GLIBCXX_HAVE_SYMVER_SYMBOL_RENAMING_RUNTIME_SUPPORT)
namespace __gnu_cxx _GLIBCXX_VISIBILITY(default)
{
std::defer_lock_t defer_lock;
std::try_to_lock_t try_to_lock;
std::adopt_lock_t adopt_lock;
}
_GLIBCXX_ASM_SYMVER(_ZN9__gnu_cxx10adopt_lockE, _ZSt10adopt_lock, GLIBCXX_3.4.11)
_GLIBCXX_ASM_SYMVER(_ZN9__gnu_cxx10defer_lockE, _ZSt10defer_lock, GLIBCXX_3.4.11)
_GLIBCXX_ASM_SYMVER(_ZN9__gnu_cxx11try_to_lockE, _ZSt11try_to_lock, GLIBCXX_3.4.11)
#endif
#endif // _GLIBCXX_HAS_GTHREADS && _GLIBCXX_USE_C99_STDINT_TR1
// XXX GLIBCXX_ABI Deprecated
// gcc-4.7.0, gcc-4.9.0
// <future> export changes
#if defined(_GLIBCXX_HAS_GTHREADS) && defined(_GLIBCXX_USE_C99_STDINT_TR1) \
&& (ATOMIC_INT_LOCK_FREE > 1)
#if defined(_GLIBCXX_SHARED)
namespace std _GLIBCXX_VISIBILITY(default)
{
_GLIBCXX_BEGIN_NAMESPACE_VERSION
// Replaced by _State_baseV2 in gcc-4.9.0
class __future_base::_State_base
{
typedef _Ptr<_Result_base> _Ptr_type;
_Ptr_type _M_result;
mutex _M_mutex;
condition_variable _M_cond;
atomic_flag _M_retrieved;
once_flag _M_once;
public:
virtual ~_State_base();
virtual void _M_run_deferred() { }
};
__future_base::_State_base::~_State_base() { }
// Replaced by _Async_state_commonV2 in gcc-4.9.0
class __future_base::_Async_state_common : public __future_base::_State_base
{
protected:
~_Async_state_common();
virtual void _M_run_deferred() { _M_join(); }
void _M_join() { std::call_once(_M_once, &thread::join, ref(_M_thread)); }
thread _M_thread;
once_flag _M_once;
};
#if defined(_GLIBCXX_HAVE_TLS)
// Replaced with inline definition in gcc-4.8.0
__future_base::_Async_state_common::~_Async_state_common() { _M_join(); }
template<typename _Tp>
struct _Maybe_wrap_member_pointer;
template<typename _Tp, typename _Class>
struct _Maybe_wrap_member_pointer<_Tp _Class::*>
{
typedef _Mem_fn<_Tp _Class::*> type;
static constexpr type
__do_wrap(_Tp _Class::* __pm)
{ return type(__pm); }
};
template<typename _Signature>
struct _Bind_simple;
template<typename _Callable, typename... _Args>
struct _Bind_simple<_Callable(_Args...)>
{
typedef typename result_of<_Callable(_Args...)>::type result_type;
template<typename _Tp, typename... _Up>
explicit
_Bind_simple(_Tp&& __f, _Up&&... __args)
: _M_bound(std::forward<_Tp>(__f), std::forward<_Up>(__args)...)
{ }
_Bind_simple(const _Bind_simple&) = default;
_Bind_simple(_Bind_simple&&) = default;
result_type
operator()()
{
typedef typename _Build_index_tuple<sizeof...(_Args)>::__type _Indices;
return _M_invoke(_Indices());
}
private:
template<std::size_t... _Indices>
typename result_of<_Callable(_Args...)>::type
_M_invoke(_Index_tuple<_Indices...>)
{
// std::bind always forwards bound arguments as lvalues,
// but this type can call functions which only accept rvalues.
return std::forward<_Callable>(std::get<0>(_M_bound))(
std::forward<_Args>(std::get<_Indices+1>(_M_bound))...);
}
std::tuple<_Callable, _Args...> _M_bound;
};
template<typename _Func, typename... _BoundArgs>
struct _Bind_simple_helper
{
typedef _Maybe_wrap_member_pointer<typename decay<_Func>::type>
__maybe_type;
typedef typename __maybe_type::type __func_type;
typedef _Bind_simple<__func_type(typename decay<_BoundArgs>::type...)>
__type;
};
// Simplified version of std::bind for internal use, without support for
// unbound arguments, placeholders or nested bind expressions.
template<typename _Callable, typename... _Args>
typename _Bind_simple_helper<_Callable, _Args...>::__type
__bind_simple(_Callable&& __callable, _Args&&... __args)
{
typedef _Bind_simple_helper<_Callable, _Args...> __helper_type;
typedef typename __helper_type::__maybe_type __maybe_type;
typedef typename __helper_type::__type __result_type;
return __result_type(
__maybe_type::__do_wrap( std::forward<_Callable>(__callable)),
std::forward<_Args>(__args)...);
}
// Explicit instantiation due to -fno-implicit-instantiation.
template void call_once(once_flag&, void (thread::*&&)(), reference_wrapper<thread>&&);
template _Bind_simple_helper<void (thread::*)(), reference_wrapper<thread>>::__type __bind_simple(void (thread::*&&)(), reference_wrapper<thread>&&);
#endif // _GLIBCXX_HAVE_TLS
_GLIBCXX_END_NAMESPACE_VERSION
} // namespace std
#endif // _GLIBCXX_SHARED
#endif // _GLIBCXX_HAS_GTHREADS && _GLIBCXX_USE_C99_STDINT_TR1
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