kopia lustrzana https://github.com/espressif/esp-idf
36 wiersze
1014 B
C++
36 wiersze
1014 B
C++
/*
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* SPDX-FileCopyrightText: 2022-2024 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Unlicense OR CC0-1.0
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*/
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#include <iostream>
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#include <future>
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#include <thread>
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#include "unity.h"
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#if __GTHREADS && __GTHREADS_CXX0X
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TEST_CASE("C++ future", "[std::future]")
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{
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// future from a packaged_task
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std::packaged_task<int()> task([] { return 7; }); // wrap the function
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std::future<int> f1 = task.get_future(); // get a future
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std::thread t(std::move(task)); // launch on a thread
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// future from an async()
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std::future<int> f2 = std::async(std::launch::async, [] { return 8; });
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// future from a promise
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std::promise<int> p;
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std::future<int> f3 = p.get_future();
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std::thread([&p] { p.set_value_at_thread_exit(9); }).detach();
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std::cout << "Waiting..." << std::flush;
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f1.wait();
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f2.wait();
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f3.wait();
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std::cout << "Done!\nResults are: "
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<< f1.get() << ' ' << f2.get() << ' ' << f3.get() << '\n';
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t.join();
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}
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#endif
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