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//===----------------------------------------------------------------------===// 98d86b2e6867297fb2109824c67c50de67f3a31f2Jonathan Roelofs// 108d86b2e6867297fb2109824c67c50de67f3a31f2Jonathan Roelofs// UNSUPPORTED: libcpp-has-no-threads 11faa9a31aef72d2db5b858f3aa6e10b7ff80163c8Eric Fiselier// UNSUPPORTED: c++98, c++03 1254da338f59b56e267dd6d1c0981e3c607c94c2b7Howard Hinnant 1354da338f59b56e267dd6d1c0981e3c607c94c2b7Howard Hinnant// <future> 1454da338f59b56e267dd6d1c0981e3c607c94c2b7Howard Hinnant 1554da338f59b56e267dd6d1c0981e3c607c94c2b7Howard Hinnant// class packaged_task<R(ArgTypes...)> 1654da338f59b56e267dd6d1c0981e3c607c94c2b7Howard Hinnant 1754da338f59b56e267dd6d1c0981e3c607c94c2b7Howard Hinnant// void swap(packaged_task& other); 1854da338f59b56e267dd6d1c0981e3c607c94c2b7Howard Hinnant 1954da338f59b56e267dd6d1c0981e3c607c94c2b7Howard Hinnant#include <future> 2054da338f59b56e267dd6d1c0981e3c607c94c2b7Howard Hinnant#include <cassert> 2154da338f59b56e267dd6d1c0981e3c607c94c2b7Howard Hinnant 2254da338f59b56e267dd6d1c0981e3c607c94c2b7Howard Hinnantclass A 2354da338f59b56e267dd6d1c0981e3c607c94c2b7Howard Hinnant{ 2454da338f59b56e267dd6d1c0981e3c607c94c2b7Howard Hinnant long data_; 2554da338f59b56e267dd6d1c0981e3c607c94c2b7Howard Hinnant 2654da338f59b56e267dd6d1c0981e3c607c94c2b7Howard Hinnantpublic: 2754da338f59b56e267dd6d1c0981e3c607c94c2b7Howard Hinnant explicit A(long i) : data_(i) {} 2854da338f59b56e267dd6d1c0981e3c607c94c2b7Howard Hinnant 2954da338f59b56e267dd6d1c0981e3c607c94c2b7Howard Hinnant long operator()(long i, long j) const {return data_ + i + j;} 3054da338f59b56e267dd6d1c0981e3c607c94c2b7Howard Hinnant}; 3154da338f59b56e267dd6d1c0981e3c607c94c2b7Howard Hinnant 3254da338f59b56e267dd6d1c0981e3c607c94c2b7Howard Hinnantint main() 3354da338f59b56e267dd6d1c0981e3c607c94c2b7Howard Hinnant{ 3454da338f59b56e267dd6d1c0981e3c607c94c2b7Howard Hinnant { 3554da338f59b56e267dd6d1c0981e3c607c94c2b7Howard Hinnant std::packaged_task<double(int, char)> p0(A(5)); 3654da338f59b56e267dd6d1c0981e3c607c94c2b7Howard Hinnant std::packaged_task<double(int, char)> p; 3754da338f59b56e267dd6d1c0981e3c607c94c2b7Howard Hinnant p.swap(p0); 387de47902d08e6cd08977b573b134f21b5782fc4bHoward Hinnant assert(!p0.valid()); 397de47902d08e6cd08977b573b134f21b5782fc4bHoward Hinnant assert(p.valid()); 4054da338f59b56e267dd6d1c0981e3c607c94c2b7Howard Hinnant std::future<double> f = p.get_future(); 4154da338f59b56e267dd6d1c0981e3c607c94c2b7Howard Hinnant p(3, 'a'); 4254da338f59b56e267dd6d1c0981e3c607c94c2b7Howard Hinnant assert(f.get() == 105.0); 4354da338f59b56e267dd6d1c0981e3c607c94c2b7Howard Hinnant } 4454da338f59b56e267dd6d1c0981e3c607c94c2b7Howard Hinnant { 4554da338f59b56e267dd6d1c0981e3c607c94c2b7Howard Hinnant std::packaged_task<double(int, char)> p0; 4654da338f59b56e267dd6d1c0981e3c607c94c2b7Howard Hinnant std::packaged_task<double(int, char)> p; 4754da338f59b56e267dd6d1c0981e3c607c94c2b7Howard Hinnant p.swap(p0); 487de47902d08e6cd08977b573b134f21b5782fc4bHoward Hinnant assert(!p0.valid()); 497de47902d08e6cd08977b573b134f21b5782fc4bHoward Hinnant assert(!p.valid()); 5054da338f59b56e267dd6d1c0981e3c607c94c2b7Howard Hinnant } 5154da338f59b56e267dd6d1c0981e3c607c94c2b7Howard Hinnant} 52