diff options
Diffstat (limited to 'test/std/thread/futures/futures.unique_future/wait.pass.cpp')
-rw-r--r-- | test/std/thread/futures/futures.unique_future/wait.pass.cpp | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/test/std/thread/futures/futures.unique_future/wait.pass.cpp b/test/std/thread/futures/futures.unique_future/wait.pass.cpp new file mode 100644 index 000000000000..e10d37cf8064 --- /dev/null +++ b/test/std/thread/futures/futures.unique_future/wait.pass.cpp @@ -0,0 +1,88 @@ +//===----------------------------------------------------------------------===// +// +// 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 + +// <future> + +// class future<R> + +// void wait() const; + +#include <future> +#include <cassert> + +void func1(std::promise<int> p) +{ + std::this_thread::sleep_for(std::chrono::milliseconds(500)); + p.set_value(3); +} + +int j = 0; + +void func3(std::promise<int&> p) +{ + std::this_thread::sleep_for(std::chrono::milliseconds(500)); + j = 5; + p.set_value(j); +} + +void func5(std::promise<void> p) +{ + std::this_thread::sleep_for(std::chrono::milliseconds(500)); + p.set_value(); +} + +int main() +{ + typedef std::chrono::high_resolution_clock Clock; + typedef std::chrono::duration<double, std::milli> ms; + { + typedef int T; + std::promise<T> p; + std::future<T> f = p.get_future(); + std::thread(func1, std::move(p)).detach(); + assert(f.valid()); + f.wait(); + assert(f.valid()); + Clock::time_point t0 = Clock::now(); + f.wait(); + Clock::time_point t1 = Clock::now(); + assert(f.valid()); + assert(t1-t0 < ms(5)); + } + { + typedef int& T; + std::promise<T> p; + std::future<T> f = p.get_future(); + std::thread(func3, std::move(p)).detach(); + assert(f.valid()); + f.wait(); + assert(f.valid()); + Clock::time_point t0 = Clock::now(); + f.wait(); + Clock::time_point t1 = Clock::now(); + assert(f.valid()); + assert(t1-t0 < ms(5)); + } + { + typedef void T; + std::promise<T> p; + std::future<T> f = p.get_future(); + std::thread(func5, std::move(p)).detach(); + assert(f.valid()); + f.wait(); + assert(f.valid()); + Clock::time_point t0 = Clock::now(); + f.wait(); + Clock::time_point t1 = Clock::now(); + assert(f.valid()); + assert(t1-t0 < ms(5)); + } +} |