154da338f59b56e267dd6d1c0981e3c607c94c2b7Howard Hinnant//===----------------------------------------------------------------------===// 254da338f59b56e267dd6d1c0981e3c607c94c2b7Howard Hinnant// 354da338f59b56e267dd6d1c0981e3c607c94c2b7Howard Hinnant// The LLVM Compiler Infrastructure 454da338f59b56e267dd6d1c0981e3c607c94c2b7Howard Hinnant// 5b64f8b07c104c6cc986570ac8ee0ed16a9f23976Howard Hinnant// This file is dual licensed under the MIT and the University of Illinois Open 6b64f8b07c104c6cc986570ac8ee0ed16a9f23976Howard Hinnant// Source Licenses. See LICENSE.TXT for details. 754da338f59b56e267dd6d1c0981e3c607c94c2b7Howard Hinnant// 854da338f59b56e267dd6d1c0981e3c607c94c2b7Howard Hinnant//===----------------------------------------------------------------------===// 97112dae6acac544a0271a85d95342c583441e2d1Dan Albert// 107112dae6acac544a0271a85d95342c583441e2d1Dan Albert// UNSUPPORTED: libcpp-has-no-threads 1154da338f59b56e267dd6d1c0981e3c607c94c2b7Howard Hinnant 1254da338f59b56e267dd6d1c0981e3c607c94c2b7Howard Hinnant// <future> 1354da338f59b56e267dd6d1c0981e3c607c94c2b7Howard Hinnant 1454da338f59b56e267dd6d1c0981e3c607c94c2b7Howard Hinnant// class packaged_task<R(ArgTypes...)> 1554da338f59b56e267dd6d1c0981e3c607c94c2b7Howard Hinnant 1654da338f59b56e267dd6d1c0981e3c607c94c2b7Howard Hinnant// template <class R, class... ArgTypes> 1754da338f59b56e267dd6d1c0981e3c607c94c2b7Howard Hinnant// void 1854da338f59b56e267dd6d1c0981e3c607c94c2b7Howard Hinnant// swap(packaged_task<R(ArgTypes...)>& x, packaged_task<R(ArgTypes...)>& y); 1954da338f59b56e267dd6d1c0981e3c607c94c2b7Howard Hinnant 2054da338f59b56e267dd6d1c0981e3c607c94c2b7Howard Hinnant#include <future> 2154da338f59b56e267dd6d1c0981e3c607c94c2b7Howard Hinnant#include <cassert> 2254da338f59b56e267dd6d1c0981e3c607c94c2b7Howard Hinnant 2354da338f59b56e267dd6d1c0981e3c607c94c2b7Howard Hinnantclass A 2454da338f59b56e267dd6d1c0981e3c607c94c2b7Howard Hinnant{ 2554da338f59b56e267dd6d1c0981e3c607c94c2b7Howard Hinnant long data_; 2654da338f59b56e267dd6d1c0981e3c607c94c2b7Howard Hinnant 2754da338f59b56e267dd6d1c0981e3c607c94c2b7Howard Hinnantpublic: 2854da338f59b56e267dd6d1c0981e3c607c94c2b7Howard Hinnant explicit A(long i) : data_(i) {} 2954da338f59b56e267dd6d1c0981e3c607c94c2b7Howard Hinnant 3054da338f59b56e267dd6d1c0981e3c607c94c2b7Howard Hinnant long operator()(long i, long j) const {return data_ + i + j;} 3154da338f59b56e267dd6d1c0981e3c607c94c2b7Howard Hinnant}; 3254da338f59b56e267dd6d1c0981e3c607c94c2b7Howard Hinnant 3354da338f59b56e267dd6d1c0981e3c607c94c2b7Howard Hinnantint main() 3454da338f59b56e267dd6d1c0981e3c607c94c2b7Howard Hinnant{ 3554da338f59b56e267dd6d1c0981e3c607c94c2b7Howard Hinnant { 3654da338f59b56e267dd6d1c0981e3c607c94c2b7Howard Hinnant std::packaged_task<double(int, char)> p0(A(5)); 3754da338f59b56e267dd6d1c0981e3c607c94c2b7Howard Hinnant std::packaged_task<double(int, char)> p; 3854da338f59b56e267dd6d1c0981e3c607c94c2b7Howard Hinnant swap(p, p0); 397de47902d08e6cd08977b573b134f21b5782fc4bHoward Hinnant assert(!p0.valid()); 407de47902d08e6cd08977b573b134f21b5782fc4bHoward Hinnant assert(p.valid()); 4154da338f59b56e267dd6d1c0981e3c607c94c2b7Howard Hinnant std::future<double> f = p.get_future(); 4254da338f59b56e267dd6d1c0981e3c607c94c2b7Howard Hinnant p(3, 'a'); 4354da338f59b56e267dd6d1c0981e3c607c94c2b7Howard Hinnant assert(f.get() == 105.0); 4454da338f59b56e267dd6d1c0981e3c607c94c2b7Howard Hinnant } 4554da338f59b56e267dd6d1c0981e3c607c94c2b7Howard Hinnant { 4654da338f59b56e267dd6d1c0981e3c607c94c2b7Howard Hinnant std::packaged_task<double(int, char)> p0; 4754da338f59b56e267dd6d1c0981e3c607c94c2b7Howard Hinnant std::packaged_task<double(int, char)> p; 4854da338f59b56e267dd6d1c0981e3c607c94c2b7Howard Hinnant swap(p, p0); 497de47902d08e6cd08977b573b134f21b5782fc4bHoward Hinnant assert(!p0.valid()); 507de47902d08e6cd08977b573b134f21b5782fc4bHoward Hinnant assert(!p.valid()); 5154da338f59b56e267dd6d1c0981e3c607c94c2b7Howard Hinnant } 5254da338f59b56e267dd6d1c0981e3c607c94c2b7Howard Hinnant} 53