diff options
Diffstat (limited to 'test/std/thread/futures/futures.tas/futures.task.members/get_future.pass.cpp')
-rw-r--r-- | test/std/thread/futures/futures.tas/futures.task.members/get_future.pass.cpp | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/test/std/thread/futures/futures.tas/futures.task.members/get_future.pass.cpp b/test/std/thread/futures/futures.tas/futures.task.members/get_future.pass.cpp new file mode 100644 index 000000000000..13b5db110668 --- /dev/null +++ b/test/std/thread/futures/futures.tas/futures.task.members/get_future.pass.cpp @@ -0,0 +1,64 @@ +//===----------------------------------------------------------------------===// +// +// 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 packaged_task<R(ArgTypes...)> + +// future<R> get_future(); + +#include <future> +#include <cassert> + +class A +{ + long data_; + +public: + explicit A(long i) : data_(i) {} + + long operator()(long i, long j) const {return data_ + i + j;} +}; + +int main() +{ + { + std::packaged_task<double(int, char)> p(A(5)); + std::future<double> f = p.get_future(); + p(3, 'a'); + assert(f.get() == 105.0); + } + { + std::packaged_task<double(int, char)> p(A(5)); + std::future<double> f = p.get_future(); + try + { + f = p.get_future(); + assert(false); + } + catch (const std::future_error& e) + { + assert(e.code() == make_error_code(std::future_errc::future_already_retrieved)); + } + } + { + std::packaged_task<double(int, char)> p; + try + { + std::future<double> f = p.get_future(); + assert(false); + } + catch (const std::future_error& e) + { + assert(e.code() == make_error_code(std::future_errc::no_state)); + } + } +} |