76 lines
2 KiB
C++
76 lines
2 KiB
C++
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//===----------------------------------------------------------------------===//
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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: no-threads
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// UNSUPPORTED: libcpp-has-no-experimental-stop_token
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// UNSUPPORTED: c++03, c++11, c++14, c++17
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// XFAIL: availability-synchronization_library-missing
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// void detach();
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#include <atomic>
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#include <cassert>
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#include <chrono>
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#include <concepts>
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#include <functional>
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#include <optional>
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#include <system_error>
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#include <thread>
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#include <type_traits>
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#include "make_test_thread.h"
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#include "test_macros.h"
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int main(int, char**) {
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// Effects: The thread represented by *this continues execution without the calling thread blocking.
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{
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std::atomic_bool start{false};
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std::atomic_bool done{false};
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std::optional<std::jthread> jt = support::make_test_jthread([&start, &done] {
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start.wait(false);
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done = true;
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});
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// If it blocks, it will deadlock here
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jt->detach();
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jt.reset();
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// The other thread continues execution
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start = true;
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start.notify_all();
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while (!done) {
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}
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}
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// Postconditions: get_id() == id().
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{
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std::jthread jt = support::make_test_jthread([] {});
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assert(jt.get_id() != std::jthread::id());
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jt.detach();
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assert(jt.get_id() == std::jthread::id());
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}
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#if !defined(TEST_HAS_NO_EXCEPTIONS)
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// Throws: system_error when an exception is required ([thread.req.exception]).
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// invalid_argument - if the thread is not joinable.
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{
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std::jthread jt;
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try {
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jt.detach();
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assert(false);
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} catch (const std::system_error& err) {
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assert(err.code() == std::errc::invalid_argument);
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}
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}
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#endif
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std::this_thread::sleep_for(std::chrono::milliseconds{2});
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return 0;
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}
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