564628014c
We create threads using std::thread in various places in the test suite. However, the usual std::thread constructor may not work on all platforms, e.g. on platforms where passing a stack size is required to create a thread. This commit introduces a simple indirection that makes it easier to tweak how threads are created inside the test suite on various platforms. Note that tests that are purposefully calling std::thread's constructor directly (e.g. because that is what they're testing) were not modified.
71 lines
1.6 KiB
C++
71 lines
1.6 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// UNSUPPORTED: libcpp-has-no-threads
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// UNSUPPORTED: c++03
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// <future>
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// class packaged_task<R(ArgTypes...)>
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// ~packaged_task();
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#include <future>
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#include <cassert>
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#include "make_test_thread.h"
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#include "test_macros.h"
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class A
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{
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long data_;
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public:
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explicit A(long i) : data_(i) {}
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long operator()(long i, long j) const {return data_ + i + j;}
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};
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void func(std::packaged_task<double(int, char)>)
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{
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}
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void func2(std::packaged_task<double(int, char)> p)
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{
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p(3, 'a');
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}
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int main(int, char**)
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{
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#ifndef TEST_HAS_NO_EXCEPTIONS
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{
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std::packaged_task<double(int, char)> p(A(5));
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std::future<double> f = p.get_future();
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support::make_test_thread(func, std::move(p)).detach();
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try
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{
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double i = f.get();
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((void)i); // Prevent unused warning
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assert(false);
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}
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catch (const std::future_error& e)
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{
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assert(e.code() == make_error_code(std::future_errc::broken_promise));
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}
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}
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#endif
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{
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std::packaged_task<double(int, char)> p(A(5));
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std::future<double> f = p.get_future();
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support::make_test_thread(func2, std::move(p)).detach();
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assert(f.get() == 105.0);
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}
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return 0;
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}
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