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9ff36c24a0
This one is a bit twisted. Some platforms don't have support for exiting in a clean manner, so they don't provide std::exit(). As a result, defining `terminate_successful()` on those platforms won't work, and the PSTL tests that rely on `terminate_successful()` also won't work. However, we don't have a notion of "no clean termination" in libc++, so we can't properly guard this. Since embedded platforms that don't support clean termination usually also don't enable exceptions, we don't need to be able to run those `terminate_successful` PSTL tests, and guarding the definition of `terminate_successful` with TEST_HAS_NO_EXCEPTIONS works pretty well. This is kind of a hack for the lack of having a concept of "no clean termination" in the library and in the test suite. Differential Revision: https://reviews.llvm.org/D153302
66 lines
2.4 KiB
C++
66 lines
2.4 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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#ifndef TEST_SUPPORT_TEST_EXECUTION_POLICIES
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#define TEST_SUPPORT_TEST_EXECUTION_POLICIES
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#include <cstdlib>
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#include <exception>
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#include <execution>
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#include <type_traits>
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#include <utility>
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#include "test_macros.h"
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#define EXECUTION_POLICY_SFINAE_TEST(function) \
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template <class, class...> \
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struct sfinae_test_##function##_impl : std::true_type {}; \
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\
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template <class... Args> \
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struct sfinae_test_##function##_impl<std::void_t<decltype(std::function(std::declval<Args>()...))>, Args...> \
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: std::false_type {}; \
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\
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template <class... Args> \
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constexpr bool sfinae_test_##function = sfinae_test_##function##_impl<void, Args...>::value;
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template <class Functor>
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bool test_execution_policies(Functor func) {
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func(std::execution::seq);
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#if TEST_STD_VER >= 20
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func(std::execution::unseq);
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#endif
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func(std::execution::par);
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func(std::execution::par_unseq);
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return true;
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}
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template <template <class Iter> class TestClass>
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struct TestIteratorWithPolicies {
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template <class Iter>
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void operator()() {
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test_execution_policies(TestClass<Iter>{});
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}
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};
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struct Bool {
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bool b_;
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Bool() = default;
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Bool(bool b) : b_(b) {}
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operator bool&() {
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return b_;
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}
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};
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#ifndef TEST_HAS_NO_EXCEPTIONS
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[[noreturn]] inline void terminate_successful() { std::exit(0); }
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#endif
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#endif // TEST_SUPPORT_TEST_EXECUTION_POLICIES
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