1*38fd1498Szrj // future -*- C++ -*- 2*38fd1498Szrj 3*38fd1498Szrj // Copyright (C) 2009-2018 Free Software Foundation, Inc. 4*38fd1498Szrj // 5*38fd1498Szrj // This file is part of the GNU ISO C++ Library. This library is free 6*38fd1498Szrj // software; you can redistribute it and/or modify it under the 7*38fd1498Szrj // terms of the GNU General Public License as published by the 8*38fd1498Szrj // Free Software Foundation; either version 3, or (at your option) 9*38fd1498Szrj // any later version. 10*38fd1498Szrj 11*38fd1498Szrj // This library is distributed in the hope that it will be useful, 12*38fd1498Szrj // but WITHOUT ANY WARRANTY; without even the implied warranty of 13*38fd1498Szrj // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14*38fd1498Szrj // GNU General Public License for more details. 15*38fd1498Szrj 16*38fd1498Szrj // Under Section 7 of GPL version 3, you are granted additional 17*38fd1498Szrj // permissions described in the GCC Runtime Library Exception, version 18*38fd1498Szrj // 3.1, as published by the Free Software Foundation. 19*38fd1498Szrj 20*38fd1498Szrj // You should have received a copy of the GNU General Public License and 21*38fd1498Szrj // a copy of the GCC Runtime Library Exception along with this program; 22*38fd1498Szrj // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see 23*38fd1498Szrj // <http://www.gnu.org/licenses/>. 24*38fd1498Szrj 25*38fd1498Szrj #include <future> 26*38fd1498Szrj #include <bits/functexcept.h> 27*38fd1498Szrj 28*38fd1498Szrj namespace 29*38fd1498Szrj { 30*38fd1498Szrj struct future_error_category : public std::error_category 31*38fd1498Szrj { 32*38fd1498Szrj virtual const char* name__anon31d31be30111::future_error_category33*38fd1498Szrj name() const noexcept 34*38fd1498Szrj { return "future"; } 35*38fd1498Szrj 36*38fd1498Szrj _GLIBCXX_DEFAULT_ABI_TAG message__anon31d31be30111::future_error_category37*38fd1498Szrj virtual std::string message(int __ec) const 38*38fd1498Szrj { 39*38fd1498Szrj std::string __msg; 40*38fd1498Szrj switch (std::future_errc(__ec)) 41*38fd1498Szrj { 42*38fd1498Szrj case std::future_errc::broken_promise: 43*38fd1498Szrj __msg = "Broken promise"; 44*38fd1498Szrj break; 45*38fd1498Szrj case std::future_errc::future_already_retrieved: 46*38fd1498Szrj __msg = "Future already retrieved"; 47*38fd1498Szrj break; 48*38fd1498Szrj case std::future_errc::promise_already_satisfied: 49*38fd1498Szrj __msg = "Promise already satisfied"; 50*38fd1498Szrj break; 51*38fd1498Szrj case std::future_errc::no_state: 52*38fd1498Szrj __msg = "No associated state"; 53*38fd1498Szrj break; 54*38fd1498Szrj default: 55*38fd1498Szrj __msg = "Unknown error"; 56*38fd1498Szrj break; 57*38fd1498Szrj } 58*38fd1498Szrj return __msg; 59*38fd1498Szrj } 60*38fd1498Szrj }; 61*38fd1498Szrj 62*38fd1498Szrj const future_error_category& __future_category_instance()63*38fd1498Szrj __future_category_instance() noexcept 64*38fd1498Szrj { 65*38fd1498Szrj static const future_error_category __fec{}; 66*38fd1498Szrj return __fec; 67*38fd1498Szrj } 68*38fd1498Szrj } 69*38fd1498Szrj 70*38fd1498Szrj namespace std _GLIBCXX_VISIBILITY(default) 71*38fd1498Szrj { 72*38fd1498Szrj _GLIBCXX_BEGIN_NAMESPACE_VERSION 73*38fd1498Szrj 74*38fd1498Szrj void __throw_future_error(int __i)75*38fd1498Szrj __throw_future_error(int __i __attribute__((unused))) 76*38fd1498Szrj { _GLIBCXX_THROW_OR_ABORT(future_error(make_error_code(future_errc(__i)))); } 77*38fd1498Szrj future_category()78*38fd1498Szrj const error_category& future_category() noexcept 79*38fd1498Szrj { return __future_category_instance(); } 80*38fd1498Szrj ~future_error()81*38fd1498Szrj future_error::~future_error() noexcept { } 82*38fd1498Szrj 83*38fd1498Szrj const char* what() const84*38fd1498Szrj future_error::what() const noexcept { return logic_error::what(); } 85*38fd1498Szrj 86*38fd1498Szrj #if defined(_GLIBCXX_HAS_GTHREADS) && defined(_GLIBCXX_USE_C99_STDINT_TR1) 87*38fd1498Szrj __future_base::_Result_base::_Result_base() = default; 88*38fd1498Szrj 89*38fd1498Szrj __future_base::_Result_base::~_Result_base() = default; 90*38fd1498Szrj 91*38fd1498Szrj void _S_run(void * p)92*38fd1498Szrj __future_base::_State_baseV2::_Make_ready::_S_run(void* p) 93*38fd1498Szrj { 94*38fd1498Szrj unique_ptr<_Make_ready> mr{static_cast<_Make_ready*>(p)}; 95*38fd1498Szrj if (auto state = mr->_M_shared_state.lock()) 96*38fd1498Szrj { 97*38fd1498Szrj // Use release MO to synchronize with observers of the ready state. 98*38fd1498Szrj state->_M_status._M_store_notify_all(_Status::__ready, 99*38fd1498Szrj memory_order_release); 100*38fd1498Szrj } 101*38fd1498Szrj } 102*38fd1498Szrj 103*38fd1498Szrj // defined in src/c++11/condition_variable.cc 104*38fd1498Szrj extern void 105*38fd1498Szrj __at_thread_exit(__at_thread_exit_elt* elt); 106*38fd1498Szrj 107*38fd1498Szrj void _M_set()108*38fd1498Szrj __future_base::_State_baseV2::_Make_ready::_M_set() 109*38fd1498Szrj { 110*38fd1498Szrj _M_cb = &_Make_ready::_S_run; 111*38fd1498Szrj __at_thread_exit(this); 112*38fd1498Szrj } 113*38fd1498Szrj #endif 114*38fd1498Szrj 115*38fd1498Szrj _GLIBCXX_END_NAMESPACE_VERSION 116*38fd1498Szrj } // namespace std 117