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1 | // Compatibility symbols for previous versions, C++0x bits -*- C++ -*- |
2 | ||
818ab71a | 3 | // Copyright (C) 2009-2016 Free Software Foundation, Inc. |
0b284728 BK |
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 | ||
3dd808fe | 25 | #include <bits/c++config.h> |
f2f08be7 | 26 | #if defined(_GLIBCXX_SHARED) |
3dd808fe JW |
27 | #define _GLIBCXX_ASYNC_ABI_COMPAT |
28 | #endif | |
29 | ||
0b284728 BK |
30 | #include <future> |
31 | #include <mutex> | |
32 | ||
734f5023 | 33 | #if __cplusplus < 201103L |
3dd808fe | 34 | # error "compatibility-thread-c++0x.cc must be compiled with -std=gnu++0x" |
0b284728 BK |
35 | #endif |
36 | ||
37 | #define _GLIBCXX_ASM_SYMVER(cur, old, version) \ | |
38 | asm (".symver " #cur "," #old "@@@" #version); | |
39 | ||
40 | // XXX GLIBCXX_ABI Deprecated | |
41 | // gcc-4.6.0 | |
42 | // <future> export changes | |
ac6d1200 | 43 | #if defined(_GLIBCXX_SYMVER_GNU) && defined(_GLIBCXX_SHARED) \ |
0b284728 BK |
44 | && defined(_GLIBCXX_HAVE_AS_SYMVER_DIRECTIVE) \ |
45 | && defined(_GLIBCXX_HAVE_SYMVER_SYMBOL_RENAMING_RUNTIME_SUPPORT) | |
46 | ||
47 | namespace __gnu_cxx _GLIBCXX_VISIBILITY(default) | |
48 | { | |
49 | const std::error_category* future_category = &std::future_category(); | |
50 | } | |
51 | ||
52 | _GLIBCXX_ASM_SYMVER(_ZN9__gnu_cxx15future_categoryE, _ZSt15future_category, GLIBCXX_3.4.14) | |
53 | ||
54 | #endif | |
55 | ||
56 | // XXX GLIBCXX_ABI Deprecated | |
57 | // gcc-4.6.0 | |
58 | // <mutex> export changes | |
59 | #if defined(_GLIBCXX_HAS_GTHREADS) && defined(_GLIBCXX_USE_C99_STDINT_TR1) | |
ac6d1200 | 60 | #if defined(_GLIBCXX_SYMVER_GNU) && defined(_GLIBCXX_SHARED) \ |
0b284728 BK |
61 | && defined(_GLIBCXX_HAVE_AS_SYMVER_DIRECTIVE) \ |
62 | && defined(_GLIBCXX_HAVE_SYMVER_SYMBOL_RENAMING_RUNTIME_SUPPORT) | |
63 | ||
64 | namespace __gnu_cxx _GLIBCXX_VISIBILITY(default) | |
65 | { | |
66 | std::defer_lock_t defer_lock; | |
67 | std::try_to_lock_t try_to_lock; | |
68 | std::adopt_lock_t adopt_lock; | |
69 | } | |
70 | ||
71 | _GLIBCXX_ASM_SYMVER(_ZN9__gnu_cxx10adopt_lockE, _ZSt10adopt_lock, GLIBCXX_3.4.11) | |
72 | _GLIBCXX_ASM_SYMVER(_ZN9__gnu_cxx10defer_lockE, _ZSt10defer_lock, GLIBCXX_3.4.11) | |
73 | _GLIBCXX_ASM_SYMVER(_ZN9__gnu_cxx11try_to_lockE, _ZSt11try_to_lock, GLIBCXX_3.4.11) | |
74 | ||
75 | ||
76 | #endif | |
77 | #endif // _GLIBCXX_HAS_GTHREADS && _GLIBCXX_USE_C99_STDINT_TR1 | |
3dd808fe JW |
78 | |
79 | ||
80 | // XXX GLIBCXX_ABI Deprecated | |
f2f08be7 | 81 | // gcc-4.7.0, gcc-4.9.0 |
3dd808fe JW |
82 | // <future> export changes |
83 | #if defined(_GLIBCXX_HAS_GTHREADS) && defined(_GLIBCXX_USE_C99_STDINT_TR1) \ | |
84 | && (ATOMIC_INT_LOCK_FREE > 1) | |
f2f08be7 | 85 | #if defined(_GLIBCXX_SHARED) |
3dd808fe JW |
86 | namespace std _GLIBCXX_VISIBILITY(default) |
87 | { | |
88 | _GLIBCXX_BEGIN_NAMESPACE_VERSION | |
f2f08be7 JW |
89 | // Replaced by _State_baseV2 in gcc-4.9.0 |
90 | class __future_base::_State_base | |
91 | { | |
92 | typedef _Ptr<_Result_base> _Ptr_type; | |
93 | ||
94 | _Ptr_type _M_result; | |
95 | mutex _M_mutex; | |
96 | condition_variable _M_cond; | |
97 | atomic_flag _M_retrieved; | |
98 | once_flag _M_once; | |
99 | public: | |
100 | virtual ~_State_base(); | |
101 | virtual void _M_run_deferred() { } | |
102 | }; | |
103 | __future_base::_State_base::~_State_base() { } | |
104 | ||
105 | // Replaced by _Async_state_commonV2 in gcc-4.9.0 | |
106 | class __future_base::_Async_state_common : public __future_base::_State_base | |
107 | { | |
108 | protected: | |
109 | ~_Async_state_common(); | |
110 | virtual void _M_run_deferred() { _M_join(); } | |
111 | void _M_join() { std::call_once(_M_once, &thread::join, ref(_M_thread)); } | |
112 | thread _M_thread; | |
113 | once_flag _M_once; | |
114 | }; | |
115 | #if defined(_GLIBCXX_HAVE_TLS) | |
116 | // Replaced with inline definition in gcc-4.8.0 | |
3dd808fe JW |
117 | __future_base::_Async_state_common::~_Async_state_common() { _M_join(); } |
118 | ||
de1d0794 JW |
119 | template<typename _Tp> |
120 | struct _Maybe_wrap_member_pointer; | |
121 | ||
122 | template<typename _Tp, typename _Class> | |
123 | struct _Maybe_wrap_member_pointer<_Tp _Class::*> | |
124 | { | |
125 | typedef _Mem_fn<_Tp _Class::*> type; | |
126 | ||
127 | static constexpr type | |
128 | __do_wrap(_Tp _Class::* __pm) | |
129 | { return type(__pm); } | |
130 | }; | |
131 | ||
3396fcc0 JW |
132 | template<typename _Signature> |
133 | struct _Bind_simple; | |
134 | ||
135 | template<typename _Callable, typename... _Args> | |
136 | struct _Bind_simple<_Callable(_Args...)> | |
137 | { | |
138 | typedef typename result_of<_Callable(_Args...)>::type result_type; | |
139 | ||
140 | template<typename _Tp, typename... _Up> | |
141 | explicit | |
142 | _Bind_simple(_Tp&& __f, _Up&&... __args) | |
143 | : _M_bound(std::forward<_Tp>(__f), std::forward<_Up>(__args)...) | |
144 | { } | |
145 | ||
146 | _Bind_simple(const _Bind_simple&) = default; | |
147 | _Bind_simple(_Bind_simple&&) = default; | |
148 | ||
149 | result_type | |
150 | operator()() | |
151 | { | |
152 | typedef typename _Build_index_tuple<sizeof...(_Args)>::__type _Indices; | |
153 | return _M_invoke(_Indices()); | |
154 | } | |
155 | ||
156 | private: | |
157 | template<std::size_t... _Indices> | |
158 | typename result_of<_Callable(_Args...)>::type | |
159 | _M_invoke(_Index_tuple<_Indices...>) | |
160 | { | |
161 | // std::bind always forwards bound arguments as lvalues, | |
162 | // but this type can call functions which only accept rvalues. | |
163 | return std::forward<_Callable>(std::get<0>(_M_bound))( | |
164 | std::forward<_Args>(std::get<_Indices+1>(_M_bound))...); | |
165 | } | |
166 | ||
167 | std::tuple<_Callable, _Args...> _M_bound; | |
168 | }; | |
169 | ||
170 | template<typename _Func, typename... _BoundArgs> | |
171 | struct _Bind_simple_helper | |
172 | { | |
173 | typedef _Maybe_wrap_member_pointer<typename decay<_Func>::type> | |
174 | __maybe_type; | |
175 | typedef typename __maybe_type::type __func_type; | |
176 | typedef _Bind_simple<__func_type(typename decay<_BoundArgs>::type...)> | |
177 | __type; | |
178 | }; | |
179 | ||
180 | // Simplified version of std::bind for internal use, without support for | |
181 | // unbound arguments, placeholders or nested bind expressions. | |
182 | template<typename _Callable, typename... _Args> | |
183 | typename _Bind_simple_helper<_Callable, _Args...>::__type | |
184 | __bind_simple(_Callable&& __callable, _Args&&... __args) | |
185 | { | |
186 | typedef _Bind_simple_helper<_Callable, _Args...> __helper_type; | |
187 | typedef typename __helper_type::__maybe_type __maybe_type; | |
188 | typedef typename __helper_type::__type __result_type; | |
189 | return __result_type( | |
190 | __maybe_type::__do_wrap( std::forward<_Callable>(__callable)), | |
191 | std::forward<_Args>(__args)...); | |
192 | } | |
193 | ||
3dd808fe JW |
194 | // Explicit instantiation due to -fno-implicit-instantiation. |
195 | template void call_once(once_flag&, void (thread::*&&)(), reference_wrapper<thread>&&); | |
196 | template _Bind_simple_helper<void (thread::*)(), reference_wrapper<thread>>::__type __bind_simple(void (thread::*&&)(), reference_wrapper<thread>&&); | |
f2f08be7 | 197 | #endif // _GLIBCXX_HAVE_TLS |
3dd808fe JW |
198 | _GLIBCXX_END_NAMESPACE_VERSION |
199 | } // namespace std | |
f2f08be7 | 200 | #endif // _GLIBCXX_SHARED |
3dd808fe | 201 | #endif // _GLIBCXX_HAS_GTHREADS && _GLIBCXX_USE_C99_STDINT_TR1 |