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//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// UNSUPPORTED: libcpp-has-no-threads
// UNSUPPORTED: c++98, c++03
// <future>
// class packaged_task<R(ArgTypes...)>
// void operator()(ArgTypes... args);
#include <future>
#include <cassert>
#include "test_macros.h"
class A
{
long data_;
public:
explicit A(long i) : data_(i) {}
long operator()(long i, long j) const
{
if (j == 'z')
TEST_THROW(A(6));
return data_ + i + j;
}
};
void func0(std::packaged_task<double(int, char)> p)
{
std::this_thread::sleep_for(std::chrono::milliseconds(500));
p(3, 'a');
}
void func1(std::packaged_task<double(int, char)> p)
{
std::this_thread::sleep_for(std::chrono::milliseconds(500));
p(3, 'z');
}
void func2(std::packaged_task<double(int, char)> p)
{
#ifndef TEST_HAS_NO_EXCEPTIONS
p(3, 'a');
try
{
p(3, 'c');
}
catch (const std::future_error& e)
{
assert(e.code() == make_error_code(std::future_errc::promise_already_satisfied));
}
#endif
}
void func3(std::packaged_task<double(int, char)> p)
{
#ifndef TEST_HAS_NO_EXCEPTIONS
try
{
p(3, 'a');
}
catch (const std::future_error& e)
{
assert(e.code() == make_error_code(std::future_errc::no_state));
}
#endif
}
int main()
{
{
std::packaged_task<double(int, char)> p(A(5));
std::future<double> f = p.get_future();
std::thread(func0, std::move(p)).detach();
assert(f.get() == 105.0);
}
#ifndef TEST_HAS_NO_EXCEPTIONS
{
std::packaged_task<double(int, char)> p(A(5));
std::future<double> f = p.get_future();
std::thread(func1, std::move(p)).detach();
try
{
f.get();
assert(false);
}
catch (const A& e)
{
assert(e(3, 'a') == 106);
}
}
{
std::packaged_task<double(int, char)> p(A(5));
std::future<double> f = p.get_future();
std::thread t(func2, std::move(p));
assert(f.get() == 105.0);
t.join();
}
{
std::packaged_task<double(int, char)> p;
std::thread t(func3, std::move(p));
t.join();
}
#endif
}
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